СПОСОБ ПОЛУЧЕНИЯ ИЗДЕЛИЯ ИЗ ТЕРМОПЛАСТА И ИЗДЕЛИЕ, ПОЛУЧЕННОЕ УКАЗАННЫМ СПОСОБОМ

Изобретение относится к способу получения однослойного или двухслойного изделия из термопласта, изделию из термопласта, полученному указанным способом и применению его в качестве внутренней отделки электрических бытовых приборов, в частности в качестве внутренней двери для холодильников или внутренней ячейки холодильника. Изделие из термопласта получают экструзией/вспениванием пластмассы, каландрированием экструдированного листа и горячим формованием для получения требуемой формы. Способ получения отличается применением в качестве вспенивающего агента смеси лимонной кислоты и полиэтилена. Полученное изделие демонстрирует уменьшение плотности не более чем на 30 масс.%, предпочтительно не более чем на 20 масс.% по сравнению с изделием, полученным из того же материала, не являющегося вспененным. Уменьшение плотности предпочтительно составляет от 14 масс.% до 18 масс.%, чтобы обеспечить таким образом такие же механические характеристики, как и у изделия из того же полимерного материала, но ...

ТЕРМОПЛАСТИЧНЫЕ ПОЛИМЕРЫ

Изобретение относится к композиции для получения вспененного термопластичного полимера и способу получению композиции и получению вспененного термопластичного полимера, которые могут быть применены, для получения электроизолирующих и термоизоляционных изделий, например кабельной изоляции, витых изделий, труб. Композиция включает смесь оксалатного соединения и термопластичного полимера, выбранного из полимеров, имеющих температуру обработки расплава не менее 250°С, т.е. из фторполимеров, полиамидов, полиамидоимидов, простых полиэфиримидов, поликетонов, полифениленсульфидов, производных полисульфонов, полибезимидазолов, полиимидов, полиэтилентерефталата, полибутилентерефталата, полициклогександиметилтерефталатов, синдиотактического полистирола, поликарбоната. Оксалатное соединение представляет собой компонент, содержащий переходный металл, например оксалат марганца. Термопластичные полимеры подвергают вспениванию с использованием твердой композиции путем нагревания композиции до температуры ...

ТЕРМОРЕАКТИВНЫЕ СЛОЖНОПОЛИЭФИРНЫЕ ПЕНОМАТЕРИАЛЫ И СПОСОБ ИЗГОТОВЛЕНИЯ

Изобретение относится к способу изготовления термореактивного сложнополиэфирного пеноматериала. Способ включает следующие последовательные стадии, в которых: (а) формируют расширяемую и термореактивную композицию, содержащую полиольный компонент, включающий по меньшей мере одно соединение, выбранное из глицерина, диглицерина и олигомеров глицерина, поликислотный компонент, включающий по меньшей мере 50% по весу лимонной кислоты, поверхностно-активное вещество, выбранное из алкилполигликозидов и смесей анионного поверхностно-активного вещества и катионного поверхностно-активного вещества, и катализатор эстерификации, (b) вводят расширяемую и термореактивную композицию в форму, или наносят расширяемую композицию на подложку,(с) нагревают расширяемую и термореактивную композицию при температуре, равной по меньшей мере 175°С, чтобы провести реакцию полиольного компонента с поликислотным компонентом и образовать блок термореактивного сложнополиэфирного пеноматериала. При этом полиольный компонент ...

Соединение с органической аминовой солью, имеющее анион в качестве донора CO, и его использование в качестве вспенивающего агента

Изобретение относится к вспенивающему агенту, содержащему соединение соли органического амина формулы (I) или смесь соединений солей органического амина формулы (I). Формула (I): A[B](I), где A- анион - источник CO, имеющий -n валентность, где n=1, 2 или 3, Bпредставляет собой или содержит ион аммония с валентностью +1 и/или один или более катионов органического амина (B), в котором каждый катион (B) имеет группу -NRRH и/или группу -NRH- в количестве m, где m=1-5, 00 мас.% до 40 мас.%. Также предложены способы ...

ТЕРМОПЛАСТИЧНЫЕ ПОЛИМЕРЫ

СПОСОБ ПОЛУЧЕНИЯ ИЗДЕЛИЯ ИЗ ПЕНОПОЛИУРЕТАНА

Thermoplastics polymers

Composition for forming polyurethane foam having flame retardancy and yellowing resistance

THERMOPLASTIC FOAM AND MANUFACTURING PROCESS FOR IT MEANS CARBON DIOXIDE

Controlling bubble formation in silicone foam filler of breast implants

A method for manufacturing a breast implant includes producing an elastic filler material including foam, by applying a source of gas bubbles to a silicone monomer to create a mixture. The mixture is inserted into a sealed chamber. After inserting the mixture, a pressure inside the sealed chamber is set to a first pressure, and a temperature of the mixture inside the sealed chamber is set to a first temperature. Then, following a preset time duration, the pressure is lowered to a second pressure that is lower than the first pressure, and after a given time, the temperature is lowered to a second temperature that is lower than the first temperature. A flexible shell, configured for implantation within a breast of a human subject, is filled with the elastic filler material.

Method for producing polyurethane hard foams and polyisocyanurate hard foams

The invention relates to a method for producing polyurethane hard foams or polyisocyanurate hard foams by reacting at least one polyisocyanate A), polyether ester polyols B) based on aromatic dicarboxylic acids obtainable by esterification of b1) 10 to 70 mol% of a dicarboxylic acid composition containing b11) 50 to 100 mol%, in relation to the dicarboxylic acid composition, of one or a more aromatic dicarboxylic acids or derivatives thereof, b12) 0 to 50 mol%, in relation to the dicarboxylic acid composition b1), of one or a more aliphatic dicarboxylic acids or derivatives thereof, b2) 2 to 30 mol% of one or more fatty acids and/or fatty acid derivatives, b3) 10 to 70 mol% of one or more aliphatic or cycloaliphatic diols having 2 to 18 C atoms or alkoxylates of the same, b4) 2 to 50 mol% of a polyether polyol having a functionality greater than or equal to 2, produced by alkoxylation of a polyol having a functionality greater than 2, where necessary further polyester polyols C), which ...

Cured unsaturated polyester-polyurethane hybrid highly filled resin foams

Chemical foaming of PVC with surface-reacted calcium carbonate (MCC) and/or hydromagnesite

The present invention relates to a PVC resin composition for preparing foamed polymer products, to a foamed polymer product prepared from the composition, to a method for preparing a foamed polymer product, to an article comprising the foamed polymer product as well as to the use of a surface-reacted calcium carbonate, hydromagnesite and mixtures thereof for reducing the density of the obtained foamed PVC product.

TWO-PART PHOSPHATE ESTER ELASTOMERIC EPOXY COMPOSITION AND METHOD OF USE THEREOF

The present teachings provide for a two-part system and a method of using the two-part system, the two-part system comprising: a first component including one or more epoxy resins; a second component including one or more phosphate esters; and wherein, upon mixing the first component and second component a cured elastomeric composition is formed in a temperature of about 0 °C to about 50 °C.

ORGANIC AMINE SALT COMPOUNDS HAVING CO2-DONATING ANIONS AND THEIR USE AS FOAMING AGENT

An organic amine salt compound having the general formula (I): An-[Bm+]p. In the formula, An- is anions having -n valence serving as CO2 donors, wherein n = 1, 2, or 3; Bm+ is or contains: ammonium ions and/or organic amine B cations; m = 1-10; formula (AA); An- is selected from one or more of the following anions: (a) carbamate; (b) carbonate; (c) formate; (d) bicarbonate; (e) organic monocarbonate; (f) organic polycarbamate; formula (g) or formula (J); or (h) organic polycarbonate; the compound of general formula (I) has at least one hydroxyalkyl linked to N atoms, i.e. has alcohol amine residue. Same can serve as a polyurethane foaming agent, a polystyrene foaming agent, or a polyvinyl chloride foaming agent.

COMPOSITIONS, ADDITIVES, AND COMPOUNDS FOR MELT PROCESSABLE, FOAMABLE, AND CELLULAR FLUOROPOLYMERS

... ²² The disclosure provides a composition or set of compositions and method ²for producing cellular, foamed, or blown fluoropolymers such as ²perfluoropolymers and other ²thermoplastics to create a lower cost communications cable, conductor ²separator, conductor ²support-separator, jacketing, tape, wire insulation and in some cases a ²conduit tube as ²individual components or combined configurations that exhibit improved ²electrical, ²flammability and optical properties. Specifically, the foamable or blown ²perfluoropolymer ²cellular insulation composition comprises; talc and the selected ²fluoropolymers such as ²perfluoropolymers. Compounded pellets including inorganic and organic fillers ²resulting in ²products in cellular or foamable form with and without solid skin surfaces has ²also been ²realized by providing melt combinations within the pellets primarily ²comprising talc and a ²perfluoropolymer, and additives as needed to provide desired property ²differentiation.² ...

GLASS-FIBER-REINFORCED SPACER FOR INSULATING GLAZING UNIT

The present invention relates to a spacer for an insulating glazing unit, at least comprising a polymeric main body, at least comprising two parallel side walls that are connected to one another by an inner wall and an outer wall, wherein the side walls, the inner wall, and the outer wall surround a hollow chamber, wherein the main body - has a glass fiber content of 0 wt.-% to 40 wt.-%, and - has, due to hollow spaces, a weight reduction of 10 wt.-% to 20 wt.-%.

A method for producing a foamed granules and its use.

Die Erfindung betrifft ein Verfahren, bei dem eine Polyesterschmelze enthaltend einen oder mehrere Polyester hergestellt wird, die Polyesterschmelze durch ein Treibmittel geschäumt wird und aus der geschäumten Polyesterschmelze ein geschäumtes Granulat hergestellt wird. Die intrinsische Viskosität (IV) der Polyesterschmelze wird dabei durch das Treibmittel um mindestens 0.05 dl/g, gemessen nach ASTM D4603, reduziert und die IV des geschäumten Granulats wird danach mittels einer Festphasenpolykondensation (SSP) erhöht.

CABLE, CONTAINING FOAMED LAYER, POLYMER INCLUDING POLYOLEFIN AND FOAMING AGENT

CABLE COMPRISING A FOAMED LAYER COMPRISING A POLYOLEFIN POLYMER AND A BLOWING AGENT

Modified silicone resin foamed body

Alkali metal bicarbonate particles with increased dissolution time

Preparation method of elastomer material for plastic runway

Foam warm mix asphalt capable of improving water stability of mixture and preparation method of foam warm mix asphalt

E - 1,1,1, 4, 4, 4 - hexafluoro -2 - butene azeotropic and azeotrope composition

PNEUMATIC VEHICLE OF WHICH THE TREAD COMPRISES A RUBBER COMPOSITION THERMALLY EXPANDABLE

SELF-FOAMING ACIDIC COMPOSITION AND PROCESS FOR THE PREPARATION THEREOF

HEAT EXPANDABLE RUBBER COMPOSITION AND TIRE WITH COMPONENT THEREOF

Composition de caoutchouc thermo-expansible, utilisable notamment en bande de roulement de pneumatique, comportant au moins : - un élastomère diénique ; - une charge renforçante ; - entre 2 et 25 pce d'un agent d'expansion ; - entre 2 et 25 pce d'un acide carboxylique dont la température de fusion est comprise entre 60°C et 220°C ; - un système de réticulation à base de soufre et de 5 à 15 pce d'un accélérateur de vulcanisation ; - le ratio pondéral (acide carboxylique / accélérateur) étant inférieur à 2,0. Procédé d'obtention d'une telle composition et pneumatique la comportant. Cette composition permet de réduire le bruit de roulage des pneumatiques sans pénaliser leur résistance au roulement.

POLYMER BLEND FOR THERMOPLASTIC CELLULAR MATERIALS, CAPABLE OF IMPROVING MECHANICAL PROPERTIES

PURPOSE: A polymer blend for thermoplastic cellular materials is provided to show better mechanical properties than cellular materials made of pure homopolymer or copolymer and to ensure heat resistance and high rigidity. CONSTITUTION: A polymer blend for thermoplastic cellular materials represents a lower density foaming material. The lower density foaming material has an extrusion sheet or a board shape. The density of the lower density foaming material is 200 kg/m^3 or less. The thermal conductivity of the lower density foaming material is 0.028~0.038 W/m.K. The lower density foaming material is made of PET/PC mixture. The PET/PC mixture contains 80-98wt% of high density PET and PC. The content of PC is 2-20wt%, more preferably, 2-5wt%. The average molecular weight of PC is 4000g/mole or greater. The lower density foaming material shows resistance against high temperature and rigid and flexible properties. The lower density foaming material contains a physical foaming agent. © KIPO 2009 ...

발포 보조재 및 발포 성형 방법

... [과제] 조핵제나 분산제 등의 기능을 충분히 발휘시켜 기포의 소경화나 이물질의 혼입 방지 등을 실현하고, 고품질인 발포 성형품을 제조할 수 있는 발포 보조재 및 발포 성형 방법을 제공한다. [해결 수단] 원료 수지 펠렛과 함께 혼련되어 발포 성형에 제공되는 발포 보조재이다. 발포 보조재는 희석 수지에 무기 입자, 화학 발포제 및 분산제가 첨가된 펠렛이다. 추가로, 희석 수지에 산화 방지제가 첨가되어 있어도 된다. 발포 성형 방법에 있어서는 원료 수지에 대해 무기 입자, 화학 발포제 및 분산제, 추가로 산화 방지제를 미리 혼합한 상태에서 동시에 첨가한다.

우레아 유도체를 포함하는 열 팽창성 조성물

... 본 발명은 하나 이상의 퍼옥사이드성 가교 중합체, 하나 이상의 퍼옥사이드 및 하나 이상의 흡열성 화학 발포제 (상기 발포제는 하나 이상의 고형의, 임의로 관능화되는, 폴리카르복실산 또는 이의 염, 및 본원에서 정의하는 바와 같은 하나 이상의 화학식 (I) 에 따른 우레아 유도체를 포함함) 를 함유하는 열 팽창성 조성물, 상기 조성물을 함유하는 성형체, 및 이 유형의 성형체를 사용하여 구성 요소에서의 공극을 밀봉 및 충전시키는 방법, 구성 요소, 특히 중공 구성 요소를 보강 또는 강화시키는 방법 및 가동성 구성 요소를 결합시키는 방법에 관한 것이다.

Expansion system for flexible insulation foams

A flexible material for thermal and acoustical insulation comprising an expanded polymer (blend) based on at least one elastomer, wherein expansion is achieved by decomposition of a mixture of at least two chemical blowing agents, comprising the exothermic chemical blowing agent 4,4′-Oxybis(benzenesulfonyl hydrazide) (OBSH) and at least one endothermic blowing agent.

POLYMER COMPOSITION BASED ON THERMOPLASTIC COPOLYESTER ELASTOMER, MANUFACTURED ARTICLE MADE WITH SUCH POLYMER COMPOSITION AND PRODUCTION PROCESS OF SUCH POLYMER COMPOSITION

The invention relates to a polymer composition based on thermoplastic copolyester elastomer comprising: —from 90% to 70% by weight of the thermoplastic copolyester elastomer containing ester and ether bonds; —from 5% to 25% by weight of one or more saturated esters with a molecular weight between about 200 and 1,000, and preferably between 300 and 380; —from 2 to 10% by weight of expanding additives. This invention also covers a manufactured article obtained by injection moulding a predefined amount of the polymer composition according to this invention, as well as a production process of such polymer composition. 1. Polymer composition based on thermoplastic copolyester elastomer comprising:from 90% to 70% by weight of the thermoplastic copolyester elastomer containing ester and ether bonds;from 5% to 25% by weight of one or more saturated esters with a molecular weight between about 200 and 1,000, and preferably between 300 and 380;from 2 to 10% by weight of expanding additives.2. Polymer composition according to claim 1 , wherein said one or more saturated esters are present in the composition from 5% to 20% by weight.4. Polymer composition according to claim 3 , wherein said alternating-structure thermoplastic copolyester elastomer is obtained by:esterification/transesterification of one or more dicarboxylic acids, of one or more esters of dicarboxylic acids and/or of one or more dimer or trimer carboxylic acids with diols and with diol polyglycols, the esters of dicarboxylic acids and the dimer or trimer carboxylic acids having a molecular weight greater than 300 and the corresponding carboxylic acid having a molecular weight less than 300; andsubsequent polycondensation of the products of esterification/transesterification.5. Polymer composition according to claim 4 , wherein the long-chain ester units are the reaction products of the esterification/transesterification of one or more diol polyglycols selected from the group consisting of: polytetramethylene ...

Methods of processing latex, methods of making carpet, and carpets

Methods are provided for processing a latex stream that include adding an isocyanate to a foam head that converts the latex stream to a foamed latex stream. A curing agent also may be added to the foam head. Also provided are methods of making a carpet that include disposing a foamed latex stream that includes an isocyanate onto a carpet fabric, or a support material to form a carpet backing. Carpets made by the methods herein also are provided.

Novel Blowing Agents and Process

The present invention is directed to the formulation and preparation of blowing agent powders and pelletized blowing agent concentrates that release water during the decomposition of the blowing agent components. The water released becomes chemically bonded to a dessicate such as calcium oxide (CaO). By chemically bonding the water generated by the decomposition of the blowing agent components, i.e., the sodium bicarbonate and benzenethiol sulphonic acid derivatives (OBSH), the foamed plastic develops a dramatically reduced cell size and hence smaller cell formation with improved surface quality. The dessicant materials are blended directly with the blowing agent components at levels that allow complete reaction with the water that is generated during the decomposition of the blowing agent components. 1. A process for producing a substantially anhydrous blowing agent powder comprising the steps of treating a blowing agent selected from the group comprising p ,p′-oxybis(benzenesulfonyl hydrazide) , sodium bicarbonate , azodicarbonamide and mixtures thereof with at least one dessicant selected from the group consisting of alkali carbonates and organic acid anhydrides under conditions substantially free of a solvent to provide a substantially anhydrous blowing agent powder.2. The process of wherein said alkali carbonate is selected from the group consisting of calcium oxide (CaO) claim 1 , magnesium oxide (MgO) claim 1 , aluminum oxide (AlO) claim 1 , and mixtures thereof.3. The process of wherein said organic acid anhydride is selected from the group consisting of acetic anhydride claim 2 , maleic anhydride claim 2 , formic anhydride and mixtures thereof.4. The process of wherein the blowing agent compound and powder is mixed at a temperature sufficient to result in the decomposition of the blowing agent thereby releasing water there from.5. The process of wherein said dessicant is added in an amount sufficient to react with all of the water that is produced from the ...

Method for Preparing Super Absorbent Polymer

The method for preparing a super absorbent polymer according to the present disclosure reduces the generating amount of a fine powder while realizing the same particle size distribution in the process of pulverizing the dried polymer, thereby reducing the load of the fine powder reassembly, drying, pulverizing and classifying steps.

ТЕРМОПЛАСТИЧНЫЕ ПОЛИМЕРЫ

Изобретение относится к композициям, предназначенным для применения при получении вспененного термопластичного полимера (фторполимеры, полиамды, полиамидоимиды, полибензимидазолы, полиимиды, полибутилентерефталаты и др), к способу получения композиции и способу получения вспененного термопластичного полимера. Композиция включает термопластичный полимер, который имеет температуру обработки в расплаве по меньшей мере 250°С, и оксалатное соединение, которое выбрано из оксалата цинка и оксалата циркония. Указанное оксалатное соединение включает 1% масс. или менее воды. Композиция находится в форме гранул. Вспененный термопластичный полимер, например фторполимер, получают нагреванием смеси, включающей оксалатное соединение и указанный полимер, до температуры, превышающей 300°. Композицию, предназначенную для получения вспененного полимера, получают из смеси оксалатного соединения и термопластичного полимера, которую обрабатывают в устройстве для обработки в расплаве. Изобретение обеспечивает ...

ЗВУКОДЕМПФИРУЮЩАЯ КОМПОЗИЦИЯ

РЕЗИНОВАЯ СМЕСЬ, ВУЛКАНИЗИРОВАННАЯ РЕЗИНА И ШИНА, ИЗГОТОВЛЕННАЯ С ИХ ИСПОЛЬЗОВАНИЕМ

... 1. Резиновая смесь, включающая каучуковый компонент; и волокно, выполненное из гидрофильной смолы, в которой волокно сформировано слоем покрытия на его поверхности, слой покрытия выполнен из смолы, имеющей сродство к каучуковому компоненту.2. Резиновая смесь, включающая каучуковый компонент; и гидрофильную смолу, в которой резиновая смесь включает комплекс, комплекс сформированный нанесением покрытия, по меньшей мере, на часть гидрофильной смолы, смолы, имеющей сродство к каучуковому компоненту, так что в комплексе формируется полость.3. Резиновая смесь по п.2, дополнительно включающая пенообразователь, в которойрезиновая смесь, включающая пенообразователь вспенивается перемешиванием и вулканизацией, исмола, имеющая сродство к каучуковому компоненту является смолой с низкой температурой плавления, температурой плавления ниже, чем максимальная температура вулканизации.4. Резиновая смесь по п.2, в которой по всей окружности гидрофильная смола покрыта смолой, имеющей сродство к каучуковому ...

ЖИДКИЙ МОДИФИКАТОР В КАЧЕСТВЕ СИСТЕМЫ-НОСИТЕЛЯ ДЛЯ CFA ВО ВСПЕНЕННЫХ ПОЛИСТИРОЛАХ

КОМПОЗИЦИЯ ДЛЯ ПОЛУЧЕНИЯ АМОРФНОГО ПОЛИМЕРНОГО ПЕНОМАТЕРИАЛА С ИСПОЛЬЗОВАНИЕМ БЕНЗИЛИДЕНСОРБИТОВОГО ЗАРОДЫШЕОБРАЗОВАТЕЛЯ

Zusammensetzung für einen porösen Kunststoff für Ansauggehäuse

Offenbart ist eine Harzzusammensetzung für einen porösen Kunststoff, die ein Polypropylen-basiertes Harz, ein Polyamid-basiertes Harz oder eine Harzlegierung, die durch Legieren der beiden Harze miteinander mit einem Kompatibilisierungsmittel hergestellt wurde, umfasst, mit einem anorganischen Füllmaterial oder kurzen Glasfasern verstärkt ist und ferner ein poröses anorganisches Füllmaterial und eine spezielles anorganisches schwaches Treibmittel umfasst. Wenn die offenbarte Harzzusammensetzung für einen porösen Kunststoff zur Herstellung eines Ansauggehäuseteils verwendet wird, reduziert sie das Gewicht und die Kosten eines Ansauggehäuseteils für Fahrzeuge.

Foamed plastic packaging film produced by adding a blowing agent to a plastic and foaming the film with the blowing agent

Foamed plastic packaging film with a thickness of up to 300 mu m, produced by adding a blowing agent to a plastic and foaming the film with the blowing agent during or after production of the film, is new.

PROCEDURE FOR THE PRODUCTION INTERLACED PVC OF A FOAM MATERIAL BODY

PROCEDURE FOR THE PRODUCTION OF EXPAND-CASH STYRENE POLYMERS

OPEN-POROUSLY TRAINING IMPLANTIERBARE PROSTHESIS WITH STRUCTURED SURFACE AND PROCEDURE FOR YOUR PRODUCTION

Formation of strong superporous hydrogels

CHEMICAL FOAMING OF PVC WITH SURFACE-REACTED CALCIUM CARBONATE (MCC) AND/OR HYDROMAGNESITE

The present invention relates to a PVC resin composition for preparing foamed polymer products, to a foamed polymer product prepared from the composition, to a method for preparing a foamed polymer product, to an article comprising the foamed polymer product as well as to the use of a surface-reacted calcium carbonate, hydromagnesite and mixtures thereof for reducing the density of the obtained foamed PVC product.

THERMALLY EXPANDABLE COMPOSITIONS

The present application relates to a thermally expandable composition, which contains at least one peroxide cross-linking polymer, which does not contain glycidyl methacrylate as a polymerized monomer, contains at least one polymer which is polymerized with glycidyl methacrylate as a monomer to a portion of 2 to 20 wt.% relative to the respective polymer, contains at least one peroxide and at least one endothermic chemical blowing agent, moulded bodies containing said composition, and a method for sealing and filling cavities in components in order to reinforce or stiffen components, in particular, hollow components, and for the bonding of movable components using such a moulded body.

METHOD FOR PRODUCING POLYURETHANE FOAM

This method for producing a polyurethane foam comprises mixing and reacting polyurethane foam starting materials including a polyol, an isocyanate, a foaming agent, and a catalyst, wherein the polyurethane foam starting materials further include sodium bicarbonate and an organic solid acid such as citric acid or malic acid.

FOAMABLE COMPOSITIONS AND METHODS FOR FABRICATING FOAMED ARTICLES

In one aspect, a foamable composition is disclosed, which comprises a base polymer, talc and a citrate compound blended with the base polymer. In some embodiments, the concentration of the talc in the composition is in a range of about 0.05% to about 25% by weight, e.g., in a range of about 2% to about 20%, or in a range of about 3% to about 15%, or in a range of about 5% to about 10%. Further, the concentration of the citrate compound in the composition can be, for example, in a range of about 0.05% to about 3% by weight, or in a range of about 0.02% to about 0.9% by weight, or in a range of about 0.03% to about 0.8% by weight, or in a range of about 0.04% to about 0.7% by weight, or in a range of about 0.05% to about 0.6% by weight.

FOAMABLE, INSULATING-LAYER-FORMING MULTI-COMPONENT COMPOSITION AND USE OF THE SAME

Disclosed is a foamable multicomponent composition which forms an insulation layer, said composition comprising: at least one alkoxysilane-functional polymer having along the polymer chain alkoxy-functional silane terminal and/or side groups of general formula (I) -Si(R1)m(OR2)3-m (I), in which R1 represents a linear or branched C1-C16 alkyl group, R2 represents a linear or branched C1-C6 alkyl group and m represents a whole number between 0 and 2; at least one fire retardant additive which forms an insulation layer; a blowing agent mixture; and comprising a cross-linking agent. Also disclosed is the use of said composition as an in-situ foam or for producing moulded bodies.

POLYOLEFIN-BASED COMPOSITION FOR A LID AND METHODS OF MAKING AND USING

Aspects of the present disclosure relate to a polyolefin composition and processes suitable for use in forming a lid for a hot food or beverage container that has a stiffness comparable to a similar lid made using high impact polystyrene and a density less than water at 23 °C.

ORGANIC AMINE SALT COMPOUNDS HAVING CO2-DONATING ANIONS AND THEIR USE AS FOAMING AGENT

An organic amine salt compound having the general formula (I): An-[Bm+]p. In the formula, An- is anions having -n valence serving as CO2 donors, wherein n = 1, 2, or 3; Bm+ is or contains: ammonium ions, hydrazine ions and/or organic amine B cations; m = 1-10; 0 Подробнее

BIODEGRADABLE FOAMS WITH IMPROVED DIMENSIONAL STABILITY

The invention provides a blowing agent composition and method of making the same comprising mixing carbon dioxide and a co-blowing agent or a blowing agent selected from the group consisting of hydrofluorocarbons, hydrochlorofluorocarbons, hydrofluoroethers, hydrofluoroolefins, hydrochlorofluoroolefins, hydrobromofluoroolefins, hydrofluoroketones, hydrochloroolefins, fluoroiodocarbons, alkyl esters, water, and mixtures thereof. Also provided is a method of making a low density foam using the blowing agent composition, and a biodegradable or biorenewable foam formed from a foamable biodegradable or biorenewable resin composition and the blowing agent composition.

SUSTAINABLE RESIDENTIAL SHEET

Described herein are surface coverings comprising a support layer; and a vinyl base layer formed from a fluid matrix comprising a virgin vinyl chloride resin, a recycled vinyl chloride resin, a plasticizer; and a blowing agent. Also described are methods of making and using same.

CURED UNSATURATED POLYESTER-POLYURETHANE HYBRID HIGHLY FILLED RESIN FOAMS

The present invention is directed to a rigid, lightweight filled resin foam having voids dispersed in a continuous phase which is formed from a polyester hybrid resin having reinforcing particles dispersed therein. The hybrid resin forms a complex cross-linked network (20) which may interact with other polymer networks in the continuous phase either by cross-linking or by forming an interpenetrating polymer network. The present invention is also directed to a process for preparing the above rigid, lightweight resin foam, and to a composition for use in this process. The foam of the present invention is useful in building materials and the like requiring high tensile and compressive strength and corrosion and thermal resistance.

METHOD OF PRODUCING HARD POLYURETHANE FOAMS

PRODUCTION OF VODOABSORBIRUYuShchIKh POLYMER PARTICLES WITH APPLICATION OF CARBONATE FOAMING AND BAND DRYING

Composite notebook computer D shell and preparation method thereof

Modified nano-cellulose reinforced polypropylene micro-foaming composite material and preparation method thereof

Elastic wear-resistant composite plastic material

Polyethylene wood-plastic micro-foaming compound material and preparation method thereof

Full-biodegradable foamed seedling tray applicable to mechanical transplanting and preparation method thereof

Foaming material for mobile phone

Method for preparing low-density pre-gelatinized starch

TIRE HAVING A TREAD HAS TREAD PATTERN ELEMENTS WITH RIGID SIDE WALLS HAVING A HEAT EXPANDABLE RUBBER-STATE GREEN, OR FOAM RUBBER-STATE FIRED.

Espuma termoplástica e processo para a produção da mesma usando dióxido de carbono

Laminated foamed sheet and molded article thereof

Polyol component and use thereof for the production of rigid polyurethane foams

A polyol component P) contains at least three different polyether polyols A) to C), and at least one polyether ester polyol D). A process for producing rigid polyurethane foams using the polyol component P) and the rigid polyurethane foams produced therefrom can be utilized.

Preparation Method for Super Absorbent Polymer

The present disclosure relates to a preparation method for a super absorbent polymer capable of minimizing bubble loss during foam polymerization by a radical polymerization method. According to the preparation method of the present disclosure, a super absorbent polymer having a high surface area can be manufactured by forming many small and uniform pores. Since it exhibits an excellent absorption rate, it can be used in various products requiring high absorption properties.

PROCESS FOR PREPARING EXPANDABLE STYRENE POLYMERS

FOAMABLE COMPOSITION AND ARTICLE

ПОЛИМЕРНЫЕ ЛИСТЫ, СПОСОБЫ ИХ ПОЛУЧЕНИЯ И ИСПОЛЬЗОВАНИЯ И ИЗДЕЛИЯ, СОДЕРЖАЩИЕ ПОЛИМЕРНЫЕ ЛИСТЫ

Изобретение относится к полимерным листам, содержащим вспененный внутренний слой или вспененный защитный слой(слои). Полимерный лист содержит вспененный слой, содержащий полимерный материал, причем полимерный материал характеризуется Tg большей или равной 100°С, и при этом вспененный слой представляет собой вспененный слой с ячейками закрытого типа, который вспенивают химическим вспенивающим средством, содержащим по меньшей мере одно из цитрата мононатрия, лимонной кислоты, 5-фенил-3,6-дигидро-2Н-1,3,4-оксадиазин-2-она, 5-фенил-1Н-тетразола и комбинаций, содержащих по меньшей одно из вышеуказанного; причем лист характеризуется уменьшением веса на 10-60% по сравнению с монолитным листом такой же геометрии и размера, полученным из такого же полимерного материала; и причем лист толщиной 1,0 мм удовлетворяет по меньшей мере одному из следующих требований к выделению тепла: 1) характеризуется общей скоростью выделения тепла за две минуты меньшей или равной 65 киловатт-минутам на квадратный метр ...

СПОСОБ ПОЛУЧЕНИЯ ИЗДЕЛИЯ ИЗ ПЕНОПОЛИУРЕТАНА

Изобретение относится к способу получения изделия из пенополиуретана. Способ включает стадию получения смоляной композиции по истечении двух месяцев или более после получения рециркулированной композиции и предоставление смоляной композиции в сосуде, включающем рециркулированную смоляную композицию с образованием смеси смоляных композиций. Смоляная композиция включает полиольный компонент, включающий один или более простых полиэфирполиолов сахарозы/глицерина, аминный катализатор, порообразующий компонент. Порообразующий компонент включает гидрофторолефин и муравьиную кислоту. Также способ включает стадии объединения смоляной композиции, рециркулированной смоляной композиции и изоцианатного компонента с образованием реакционной смеси и выгрузки реакционной смеси с образованием изделия из пенополиуретана. Рециркулированная смоляная композиция присутствует в смеси смоляных композиций в количестве от 0,1 до 10 мас.% в пересчете на общую массу смеси смоляных композиций. Смесь смоляных композиций ...

ИЗГОТОВЛЕНИЕ ПАНЕЛЕЙ ИЗ ПОЛИИЗОЦИАНУРАТА ПЕНОМАТЕРИАЛА

Настоящее изобретение относится к способу изготовления полиизоциануратного пеноматериала, а также к способу изготовления слоистых панелей типа «сэндвич». Способ получения полиизоциануратного пеноматериала включает инжектирование в закрытую полость формы реакционной смеси и отверждение указанной смеси с образованием полиизоциануратного пеноматериала. Указанная полость формы находится под абсолютным давлением от 300 до 950 мбар. Указанная реакционная смесь включает органический полиизоцианат (а), полиольную смесь (b), катализатор тримеризации (с), по меньшей мере одно огнестойкое вещество (d), необязательно вспомогательные вещества (е) и порообразователь (f). Изоцианатный индекс данной реакционной смеси составляет более 250. Полиольная смесь (b) включает ароматический сложный полиэфирполиола, в количестве по меньшей мере 35 мас.%, и полиол на основе новолака. Сочетание определенного пенообразующего состава на основе полиизоцианурата и пониженного давления в полости формы обеспечивает изготовление ...

АРМИРОВАННАЯ СТЕКЛОВОЛОКНАМИ ДИСТАНЦИОННАЯ РАМКА ДЛЯ СТЕКЛОПАКЕТА

Verfahren zur Herstellung einer geschäumten Kunststoffplatte und nach dem Verfahren herstellbare Kunststoffplatte

Zur Herstellung einer geschäumten Kunststoffplatte aus PVC oder aus Elends aus PVC mit PVC-C, PVC mit styrolhaltigen Copolymeren oder PVC mit Polyacrylaten, wobei der PVC-Anteil mindestens 10% beträgt und die Kunststoffplatte eine geschlossenzellige Struktur und eine Dichte < 70% der Dichte der ungeschäumten Formmasse aufweist, wird der Formmasse wenigstens ein chemisches Treibmittel und wenigstens ein physikalisches Treibmittel sowie Kalziumkarbonat mit einer spezifischen Oberfläche von 36 m2/cm3 zugesetzt.

Thermoplastic Polymers

PROCEDURE FOR THE PRODUCTION OF POLYISOCYANURAT EXPANDED POLYSTYRENE

Formation of strong superporous hydrogels

NON-CROSSLINKED COPOLYMER FOAM WITH POLYAMIDE BLOCKS AND POLYETHER BLOCKS

La présente invention concerne une composition de mousse de copolymère à blocs non réticulé, caractérisée en ce qu'elle se présente sous la forme d'une matrice polymère contenant des cellules fermées enfermant du gaz, ladite matrice comportant : - de 90 à 99,9% en poids dudit copolymère à blocs, et - de 0,01% à 10% en poids de carbonate de métal, sur le poids total de la composition de mousse. La présente invention concerne également une composition moussable et un procédé pour fabriquer ladite mousse, ainsi que l'utilisation de la mousse dans les semelles de chaussures de sport, les ballons ou balles, les gants, les équipements de protection individuels, les semelles pour rails, les pièces automobiles, les pièces de construction et les pièces d'équipement électrique et électronique, l'équipement audio, l'isolation acoustique et/ou thermique, les pièces visant à amortir des vibrations.

COMPOSITION FOR PREPARING AN AMORPHOUS POLYMERIC FOAM USING A BENZYLIDENE SORBITOL NUCLEATING AGENT

The present invention relates to composition for the preparation of a polymeric foam with improved thermal properties, to a polymeric foam obtainable therefrom, and to a method for preparing such a polymeric foam each for them comprising (i) an at least essentially amorphous polymer resin and (ii) a nucleating agent. The at least essentially amorphous polymer resin is preferably polystyrene. The nucleating agent is preferably selected from the group consisting of 1,3:2,4-bis-(benzylidene)-sorbitol derivates and mixtures thereof, and is preferably 1,3:2,4-bis-O-(4-methylbenzylidene)-D-sorbitol, 1,3:2,4-bis-(3,4-Dimethylbenzylidene)-sorbitol and 1,3:2,4-bis-(4-propylbenzylidene)-propyl sorbitol.

PRODUCING RIGID POLYURETHANE FOAMS AND RIGID POLYISOCYANURATE FOAMS

The invention relates to a method for producing polyurethane hard foams or polyisocyanurate hard foams by reacting at least one polyisocyanate A), polyether ester polyols B) based on aromatic dicarboxylic acids obtainable by esterification of b1) 10 to 70 mol% of a dicarboxylic acid composition containing b11) 50 to 100 mol%, in relation to the dicarboxylic acid composition, of one or a more aromatic dicarboxylic acids or derivatives thereof, b12) 0 to 50 mol%, in relation to the dicarboxylic acid composition b1), of one or a more aliphatic dicarboxylic acids or derivatives thereof, b2) 2 to 30 mol% of one or more fatty acids and/or fatty acid derivatives, b3) 10 to 70 mol% of one or more aliphatic or cycloaliphatic diols having 2 to 18 C atoms or alkoxylates of the same, b4) 2 to 50 mol% of a polyether polyol having a functionality greater than or equal to 2, produced by alkoxylation of a polyol having a functionality greater than 2, where necessary further polyester polyols C), which ...

Polyvinyl chloride wood-plastic flame retardance composite plate and preparation method

Polyethylene resin foam particles having antistatic performance, and polyethylene resin in-mold foam-molded article and method for manufacturing same

Foaming composition and foam thereof

AZEOTROPIC AND AZEOTROPE-LIKE COMPOSITIONS OF E-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE

TIRE FOR VEHICLE WHOSE TREAD COMPRISES A COMPOSITION OF RUBBER THERMO-EXPANSIBLE

HEAT EXPANDABLE RUBBER COMPOSITION FOR A TIRE

Composition de caoutchouc thermo-expansible à l'état non vulcanisé, expansée à l'état vulcanisé, et pneumatique pour véhicule comportant une telle composition de caoutchouc ; à l'état non vulcanisé, ladite composition comporte 50 à 100 pce d'un copolymère à base de styrène et de butadiène, optionnellement 0 à 50 pce d'un autre élastomère diénique tel qu'un polybutadiène ou du caoutchouc naturel, plus de 50 pce d'une charge renforçante telle que silice et/ou noir de carbone, entre 5 et 25 pce de microparticules d'un (hydrogéno)carbonate de sodium ou potassium, ayant une taille médiane en poids comprise entre 1 et 50 µm, entre 2 et 15 pce d'un acide carboxylique dont la température de fusion est comprise entre 60°C et 220°C tel que par exemple l'acide citrique, la teneur totale en (hydrogéno)carbonate et acide carboxylique étant supérieure à 10 pce. L'utilisation combinée des deux derniers composés, aux taux élevés préconisés, permet de réduire notablement les bruits émis par le pneumatique ...

VEHICLE TIRE HAVING A TREAD COMPRISING A RUBBER COMPOSITION THERMALLY EXPANSIBLE

Bandage pour véhicule, notamment bandage hiver, dont la bande de roulement comporte une composition de caoutchouc thermo-expansible à l'état non vulcanisé, expansée à l'état vulcanisé ; ladite composition, à l'état non vulcanisé, comporte au moins un élastomère diénique tel que du caoutchouc naturel et/ou un polybutadiène, plus de 50 pce d'une charge renforçante telle que de la silice ou du noir de carbone, entre 2 et 60 pce de microparticules hydrosolubles telles que des microparticules de sulfate de magnésium ou de potassium, entre 2 et 25 pce d'un agent d'expansion tel qu'un (hydrogéno)carbonate de sodium ou potassium, et entre 2 et 25 pce d'un composé thermofusible dont la température de fusion est comprise entre 60°C et 220°C, tel que par exemple l'acide citrique. L'utilisation combinée de ces différents composés, aux taux préconisés, permet l'obtention d'une très bonne adhérence à la fois sur glace sèche et sur glace fondante.

소리 감쇠 조성물

... 자동차 용도에서, 특히 편상 운모 충전된 역청에 기초한, 차량의 3D 형태화된 금속 본체 패널로부터 나오는 청각 진동을 감쇠시키기 위해서, 베이크온 자유층 클래딩으로서 사용하기 위한 소리 감쇠 재료 조성물.

이소시아네이트/실록산 폴리에테르 조성물

... 본 발명은 우레탄 결합을 통해 유기 라디칼에, 바람직하게는 1개 이상의 이소시아네이트 기 및/또는 폴리우레탄 결합을 갖는 유기 라디칼에 결합되는 적어도 하나의 폴리에테르 라디칼을 갖는 화학식 I의 실록산, 및 2개 이상의 이소시아네이트 기를 갖는 화합물 1종 이상을 포함하는 조성물로서, 규소를 함유하지 않는 폴리올, 또는 그와 이소시아네이트의 반응 생성물을 포함하지 않는 것을 특징으로 하는 조성물; 폴리우레탄 및 폴리우레탄 발포체를 제조하기 위한 조성물의 용도; 및 그에 따라 제조된 폴리우레탄 및 폴리우레탄 발포체; 및 그의 용도에 관한 것이다.

Composition for Porous Plastics for Intake Housings

composition and method for producing refrigeration

COMPOSICION EN BASE A TANINOS VEGETALES, LIBRE DE FORMALDEHIDO Y DE SOLVENTES ORGANICOS DE BAJO PUNTO DE EBULLICION, PARA LA PRODUCCION DE UN MATERIAL EXPANDIDO, Y METODO RELACIONADO

Una composición para la fabricación de un material expandido comprende taninos flavonoides, principalmente del tipo prorobineditina y profisetinidina, en una cantidad ponderal comprendida entre el 40% y el 50% de la composición, alcohol furfurílico en una cantidad superior al 15% en peso de la composición y un catalizador ácido. La composición contiene una cantidad de agua de más del 15% en peso de la composición e incluye una substancia apta para desarrollar un gas con funciones de agente de expansión, por ejemplo un isocianato en una cantidad de no más del 10% en peso de la composición preferentemente de menos del 1% en peso, estando la composición totalmente libre de formaldehido y de solventes orgánicos de bajo punto de ebullición.

Laser-induced plastic foaming

A matrix material composed of polymer, preferably of thermoplastic polymer, or coating material. The matrix material includes 0.01 to 50% by weight of an additive for foaming of the matrix material which can be triggered by irradiation with laser light or IR light. The additive includes at least the following constituents: a) at least one absorber material which, embedded or dissolved in the matrix material, absorbs laser light or IR light and brings about local heating in the matrix material at the site of irradiation with laser light or IR light, and b) at least one blowing agent which, when heated due to the irradiation with laser light or IR light to temperatures above 50° C., forms a gas which foams the matrix material by decomposition, chemical conversion or reaction.

Compositions for compounding, extrusion and melt processing of foamable and cellular fluoropolymers

The present invention relates generally to the use of talc as a chemical foaming agent in perfluoropolymers to form foamable and foamed compositions. For example, in one aspect, a foamable composition is disclosed, which comprises (i) one or more base perfluoropolymers comprising at least 50 percent by weight of the composition, and (ii) talc blended with the one or more base perfluoropolymers, where the talc comprises 3 percent to about 15 percent by weight of the composition. Each of the perfluoropolymers is selected from the group consisting of tetrafluoroethylene/perfluoromethylvinyl ether copolymer (MFA), hexafluoropropylene/tetrafluoroethylene copolymer (FEP) and perfluoroalkoxy (PFA) and any blend thereof, where hydrogen-containing fluoropolymers are absent from the composition. The one or more base perfluoropolymers are melt-processable at one or more elevated processing temperatures of at least about 600° F. at which the talc functions as a chemical foaming agent for extrusion or mold processing of the composition into a foamed article having uniform cell structures.

Composition for porous plastics for intake housings

Disclosed is a porous plastic resin composition including a polypropylene-based resin, a polyamide-based resin, or an alloy resin made by alloying the two resins to each other with a compatibilizer, reinforced with an inorganic filler or a short glass fiber, and further including a porous inorganic filler and a special inorganic low blowing agent. When the disclosed porous plastic resin composition is used to make an intake housing part, it reduces the weight and cost of an automobile intake housing part.

Composition For Preparing A Polymeric Foam

The present invention relates to composition for the preparation of a polymeric foam with improved thermal properties, to a polymeric foam obtainable therefrom, and to a method for preparing such a polymeric foam each for them comprising (i) an at least essentially amorphous polymer resin and (ii) a nucleating agent. The at least essentially amorphous polymer resin is preferably polystyrene. The nucleating agent is preferably selected from the group consisting of 1,3:2,4-bis-(benzylidene)-sorbitol derivates and mixtures thereof, and is preferably 1,3:2,4-bis-O-(4-methylbenzylidene)-D-sorbitol, 1,3:2,4-bis-(3,4-Dimethylbenzylidene)-sorbitol and 1,3:2,4-bis-(4-propylbenzylidene)-propyl sorbitol. 112.-. (canceled)15. (canceled) The present invention relates to compositions for the preparation of a polymeric foam with improved thermal properties, and to a foamed polymeric article obtainable therefrom, and to a method for preparing such a polymeric foam or article.In response to environmental concerns, there has been an evolution from using hydrochlorofluorocarbon (HCFC) foam blowing agents to using carbon dioxide and/or hydrocarbons and alcohols. Unfortunately, as a result of this change, the thermal conductivity of foam materials has increased due to the higher conductivity of these new blowing agents. This results in insulation foams that no longer fulfill the required product specifications unless additional steps are taken to increase the thermal resistance of these insulation foams.It is known that an infrared attenuation agent (IAA) can be used to improve an insulation foam. An effective infrared attenuation agent favors increased reflection and absorption and decreased transmission of heat radiation as much as possible. Traditionally, inorganic materials have been used as IAA to reduce the portion of heat radiation. This includes, for example, graphite, aluminum, stainless steel, cobalt, nickel, carbon black, and titanium dioxide. As an example for several ...

THERMALLY EXPANDABLE COMPOSITIONS

The present application relates to a thermally expandable composition containing an endothermic chemical blowing agent, to shaped bodies containing said composition and to a method for sealing and filling cavities in components, for strengthening or reinforcing components, in particular hollow components, and for bonding movable components using shaped bodies of this type. 1. A thermally expandable composition containing at least one endothermic chemical blowing agent , at least one reactive binder and at least one of a curing agent and an accelerator.2. The thermally expandable composition according to claim 1 , wherein the at least one endothermic chemical blowing agent is selected from bicarbonates claim 1 , solid polycarboxylic acids claim 1 , solid polycarboxylic acid salts and mixtures thereof; and the at least one reactive binder is selected from the group consisting of epoxies claim 1 , rubbers claim 1 , peroxide-crosslinkable polymers and combinations thereof.3. The thermally expandable composition according to claim 2 , wherein the endothermic chemical blowing agent contains a bicarbonate of formula XHCO claim 2 , wherein X is a cation.4. The thermally expandable composition according to claim 3 , wherein X is selected from Na claim 3 , K claim 3 , NH claim 3 , ½ Zn claim 3 , ½ Mg claim 3 , ½ Ca and mixtures thereof.5. The thermally expandable composition according to claim 2 , wherein the endothermic chemical blowing agent contains a mixture of 2 or more bicarbonates.6. The thermally expandable composition according to claim 2 , wherein the solid polycarboxylic acids are selected from organic di- claim 2 , tri- claim 2 , tetra- acids and combinations thereof.7. The thermally expandable composition according to claim 2 , wherein the solid polycarboxylic acids comprise hydroxyl-functionalized and/or unsaturated di- claim 2 , tri- claim 2 , tetra- or polycarboxylic acids.8. The thermally expandable composition according to claim 2 , wherein the endothermic ...

RHEOLOGY MODIFICATION BY POROUS GEL PARTICLES

Modification of the rheology of a liquid medium, aqueous or nonaqueous, with polymers in the form of specific particles obtained by grinding (micronizing) a porous macrogel, itself prepared by a process comprising a radical polymerization step which comprises reacting in the presence of pore formers monomers containing monomers bearing at least two ethylenic unsaturations, typically in combination with monomers bearing a single ethylenic unsaturation; a polymerization initiator; and optionally a polymerization control agent. These polymer particles keep other particles in suspension within the liquid medium, and also the stabilized suspensions are obtained. 1. A method comprising adding crosslinked polymer particles (p) to a liquid medium , the crosslinked polymer particles (p) obtained by grinding a macrogel prepared by a process comprising a radical polymerization step (E) which comprises reacting , within a reaction medium M comprising pore formers: at least one radical polymerization initiator;', 'optionally at least one radical polymerization control agent, 'ethylenically unsaturated monomers, containing monomers m1 bearing at least two ethylenic unsaturations;'}to modify the rheology of said liquid medium.2. The method as claimed in claim 1 , wherein the monomers employed in step (E) comprise not only monomers m1 but also monomers m2 bearing a single ethylenic unsaturation claim 1 , preferably with a mass ratio m1/m2 of between 0.01 and 30.3. The method as claimed in claim 1 , wherein the liquid medium is an aqueous liquid medium.4. The method as claimed in claim 1 , wherein particles are kept in suspension within the liquid medium.5. The method as claimed in claim 1 , wherein the pore formers employed in step (E) are gas bubbles.6. The method as claimed in claim 1 , wherein step (E) first comprises a step (E1) in which only a part of the ethylenically unsaturated monomers are polymerized in the absence of pore formers claim 1 , then a step (E2) in which the ...

FOAMS AND METHOD OF FORMING FOAMS OF IONOMERS OF COPOLYMERS OF VINYLIDENE AROMATIC MONOMER AND UNSATURATED COMPOUNDS WITH ACID GROUPS

A foaming composition useful to make an extruded foam is comprised of comprising a plurality of chains of a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids, the copolymer having about 0.01 to about 15.0 percent by weight of the one or more unsaturated acids wherein the acid groups are pendant from the copolymer a metal salt, metal oxide or combination thereof, the metal having a valence of at least 2; and one or more blowing agents. The foaming composition may be made into a foam by heating the foaming composition to a temperature sufficient to melt and ionically crosslink said copolymer which is then extruded through a die forming a foam. The foam is comprised of an ionically crosslinked aforementioned copolymer, wherein the copolymer is crosslinked through ionic bonds between the unsaturated acids and the metal of the metal salt or metal oxide. 1. A foaming composition comprising:(a) a plurality of chains of a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids, the copolymer having about 0.01 to about 15.0 percent by weight of the one or more unsaturated acids wherein the acid groups are pendant from the copolymer;(b) a metal salt, metal oxide or combination thereof, the metal having a valence of at least 2; and,(c) one or more blowing agents.2. The foaming composition of wherein the foaming composition is an admixture of each of (a) claim 1 , (b) and (c).3. The foaming composition of claim 1 , wherein the foaming composition are separate parts that are brought into contact when forming a foam.4. The foaming composition according to claim 1 , wherein the metal is one or more of transition metals claim 1 , post transition metals claim 1 , metalloids or an alkaline earth metals.5. The foaming composition according to claim 1 , wherein the metal is one or more of zinc claim 1 , zirconium claim 1 , aluminum claim 1 , magnesium and calcium.6. The foaming composition according to claim 1 , ...

ORGANIC AMINE SALT COMPOUNDS HAVING CO2-DONATING ANIONS AND THEIR USE AS FOAMING AGENT

An organic amine salt compounds of general formula A[B](I) is disclosed, wherein A is a CO-donating anion with a valence of −n, wherein n=1, 2 or 3; each B comprises: ammonium ion, hydrazinium ion and/or organic amine B cation; wherein 49. The foaming agent according to claim 48 , wherein (1a) H[OCH(R)CH(R)]— is H(OCHCH)— claim 48 , H(OCHCH(CH))— claim 48 , H(OCH(CH)CH)— claim 48 , H(OCHCH(CH))— claim 48 , H(OCH(CH)CH)— claim 48 , H(OCHCH(CHCl))— claim 48 , H(OCH(CHCl)CH)— or H(OCHCH(CBr))—.50. The foaming agent according to claim 48 , wherein: the water content in the foaming agent is from >0 wt % to 40 wt %; and/orthe pH of the foaming agent is 7.5-10.51. The foaming agent according to claim 50 , wherein: the water content in the foaming agent is 5-35 wt %; and/orthe pH of the foaming agent is 7.8-9.5.52. The foaming agent according to claim 51 , wherein: the water content in the foaming agent is 10-30 wt %; and/orthe pH of the foaming agent is 8-9.5.53. The foaming agent according to claim 52 , wherein: the water content in the foaming agent is 15-25 wt %.54. The foaming agent according to claim 48 , wherein: the total content of the compounds of the general formula (I) and water in the foaming agent is 70-100 wt % claim 48 , based on the total weight of the foaming agent.55. The foaming agent according to claim 54 , wherein: the total content of the compounds of the general formula (I) and water in the foaming agent is 80-99.999% claim 54 , based on the total weight of the foaming agent.56. The foaming agent according to claim 55 , wherein: the total content of the compounds of the general formula (I) and water in the foaming agent is 85-99.0% claim 55 , based on the total weight of the foaming agent.58. The foaming agent according to claim 57 , wherein the organic amine compound (B) is an organic amine compound having N—R group(s) claim 57 , and the organic amine compound (B) having N—R group(s) is formed by substitution on ammonia or on at least one N atom of ...

PROCESSING AIDS FOR USE IN MANUFACTURE EXTRUDED POLYSTYRENE FOAMS USING LOW GLOBAL WARMING POTENTIAL BLOWING AGENTS

A foamable polymeric mixture is provided that includes a polymer composition and at least one blowing agent. The blowing agent may comprise any blowing agents known not to deplete the ozone or increase the prevalence of global warming, such as CO, HFO, HFC and mixtures thereof. The foamable polymeric mixture may further includes at least one processing aid comprising an organic phase changing material. The inventive foamable mixture is capable of processing at a pressure range of 800 to 1200 psi (5.5 to 8.3 MPa). 1. A foamed insulation product comprising: polystyrene;', 'a blowing agent composition comprising carbon dioxide and at least one of hydrofluoroolefins and hydrofluorocarbons, and', 'from 0.05 to 3 wt. % of an organic phase changing material, based upon the weight of the polymeric foam composition, wherein the organic phase changing material has a transition temperature from liquid to solid at a temperature from −5 to 60° C.;, 'a polymeric foam composition comprisingwherein the foamed insulation product has an insulation R-value per inch of between 4 and 7.2. The foamed insulation product of claim 1 , wherein the organic phase changing material comprises at least one of a fatty acid ester and a wax.3. The foamed insulation product of claim 2 , wherein the organic phase changing material comprises a synthetic beeswax.4. The foamed insulation product of claim 1 , wherein the organic phase changing material is microencapsulated.5. The foamed insulation product of claim 4 , wherein the organic phase changing material is microencapsulated by a polymer material comprising one or more of melamine formaldehyde claim 4 , urea formaldehyde claim 4 , and acrylate copolymer resins.6. The foamed insulation product of claim 1 , further comprising at least one infrared attenuating agent.7. The foamed insulation product of claim 1 , wherein the foamed insulation product is monomodal.8. The foamed insulation product of claim 1 , wherein the foamed insulation product has a ...

NON-ISOCYANATE POLYURETHANE PRODUCTS AND METHODS OF MAKING THE SAME

The present disclosure relates to a method for making a non-isocyanate polyurethane (NIPU) foam, where the method includes decomposing a blowing agent having at least one of an amine carbamate salt and/or an amine bicarbonate salt to form a diamine and COin the presence of a molecule comprising a plurality of cyclic carbonate functional groups and reacting the diamine with at least a portion of the cyclic carbonate functional groups to form the NIPU foam. In some embodiments of the present disclosure, the reacting and the decomposing may occur at substantially the same rate. 1. A method for making a non-isocyanate polyurethane (NIPU) foam , the method comprising:{'sub': '2', 'decomposing a blowing agent comprising at least one of an amine carbamate salt or an amine bicarbonate salt to form a diamine and COin the presence of a molecule comprising a plurality of cyclic carbonate functional groups; and'}reacting the diamine with at least a portion of the cyclic carbonate functional groups to form the NIPU foam.2. The method of claim 1 , wherein the reacting and the decomposing occur at substantially the same rate.3. The method of claim 1 , wherein the molecule is derived from a biomass.4. The method of claim 4 , wherein the molecule is derived from at least one of a soybean oil claim 4 , a linseed oil claim 4 , or an algae oil.5. The method of wherein the molecule is produced by carbonating an unsaturated lipid or oil.6. The method of claim 1 , wherein the NIPU foam has a density between about 0.01 g/cmand about 0.80 g/cm.7. The method of claim 1 , wherein the decomposing is accomplished by heating.8. The method of claim 1 , wherein the heating is performed by at least one of conductive heating claim 1 , radiative heating claim 1 , or radio frequency heating.9. The method of claim 7 , wherein the heating results in a temperature between about 50° C. and about 200° C.10. The method of claim 1 , wherein the diamine comprises between 1 and 10 carbon atoms.11. The method ...

MICRO, SUB-MICRON, AND/OR NANO-CELLULAR FOAMS BASED ON SILOXANE CONTAINING (CO)POLYMERS AND BLENDS

This disclosure describes micro-, sub-micron, and nano-cellular polymer foams formed from siloxane containing (co)polymers and blends, and systems and methods of formation thereof. The micro, sub-micron, and nano-cellular polymer foam has a density of less than or equal to 300 kg/m. 1. A polymer foam comprising:a siloxane based copolymer,{'sup': '3', 'wherein the polymer foam has a density of less than or equal to 300 kg/mas measured according to ASTM D1622,'}{'b': '100', 'wherein the polymer foam has an average cell size of less than 4 microns, and wherein the average cell size is calculated based on cryo-fracturing the polymer foam to generate a cross-section of the polymer foam which is analyzed by an electron microscope to determine an average of a maximum transverse dimension and a minimum transverse dimension for randomly or pseudo-randomly selected cells.'}2. The polymer foam of claim 1 , wherein the polymer foam comprises a bead foam claim 1 , wherein the average cell size is 10 nm to 3.9 microns claim 1 , wherein the polymer foam has a relative density of between 0.15 and 0.3 claim 1 , and wherein the relative density is based on a density of the polymer foam divided by a density of polymer material of the polymer foam claim 1 , the polymer material including the siloxane based copolymer.3. The polymer foam of claim 1 , wherein the polymer foam comprises a nano-cellular polymer foam and has a cell density of greater than or equal to 10E15 cells per cubic centimeter and the average cell size is 10 nm to 500 nm claim 1 , and wherein the cell density is based on image analysis of at least a portion of the cross-section of the polymer foam.4. The polymer foam of claim 1 , wherein the polymer foam comprises a sub-micron cellular polymer foam and has a cell density between 10E12 and 10E15 cells per cubic centimeter and the average cell size is 0.5 microns to 1 micron claim 1 , and wherein the cell density is based on image analysis of at least a portion of the ...

Method for producing sheet

Provided is a method for producing a foamable sheet with a convenient process. The method for producing a sheet includes the steps of: molding a resin composition including a thermoplastic resin and inorganic substance particles in a ratio of 80:20 to 20:80 and further including a foaming agent into a sheet-like product and stretching the sheet after being molded. The foaming agent preferably includes a polyethylene resin as a carrier resin and a hydrogencarbonate as an active component that acts as a thermally decomposable foaming agent serving as a foam nucleating agent.

Soft actuator and methods of fabrication

Soft actuators are fabricated from materials that enable the actuators to be constructed with an open-celled architecture such as an interconnected network of pore elements. The movement of a soft actuator is controlled by manipulating the open-celled architecture, for example inflating/deflating select portions of the open-celled architecture using a substance such as compressed fluid.

Injection-molded foam of resin composition with satisfactory surface property and capable of weight reduction and rib design

A foam injection molded article includes a resin composition, wherein the resin composition includes: (A) a polycarbonate resin, (B) a thermoplastic polyester resin, (C) a polyester-polyether copolymer, and (D) a foaming agent. The article has an arithmetic average roughness (Ra) that is greater than 0.1 μm and less than 9 μm, a maximum height (Ry) that is greater than 1 μm and less than 90 μm; and a 10-point average roughness (Rz) that is greater than 1 μm and less than 70 μm.

FOAMABLE MASTERBATCH AND POLYOLEFIN RESIN COMPOSITION WITH EXCELLENT EXPANDABILITY AND DIRECT METALLIZING PROPERTY

The present disclosure provides a masterbatch prepared by melting and extruding a mixture including a polyolefin resin, wherein the mixture includes 10 to 89% by weight of a polyolefin resin, 5 to 30% by weight of a chemical blowing agent, 5 to 30% by weight of thermally expandable microcapsule, and 1 to 30% by weight of an inorganic filler. In addition, the present disclosure provides a polyolefin resin composition with excellent expandability and direct metallizing property, which includes the foamable masterbatch. A molded article obtained by foam injection molding of the polyolefin resin composition according to one form of the present disclosure can be useful in satisfying uniform distribution and mechanical properties of foamed cells so that the molded article can be widely applied to parts for automobile interior/exterior materials, and also improving fuel efficiency of automobiles by achieving lightweight parts. 1. A foamable masterbatch prepared by melting and extruding a mixture comprising a polyolefin resin ,wherein the mixture comprises:(A) 10 to 89% by weight of a polyolefin resin;(B) 5 to 30% by weight of a chemical blowing agent;(C) 5 to 30% by weight of thermally expandable microcapsule; and(D) 1 to 30% by weight of an inorganic filler.2. The foamable masterbatch of claim 1 , wherein the polyolefin resin (A) comprises at least one selected from the group consisting of a random copolymer formed by polymerization of a comonomer selected from the group consisting of homo-polypropylene (Homo-PP) claim 1 , propylene claim 1 , ethylene claim 1 , butylene claim 1 , and octene claim 1 , a block copolymer formed by blending an ethylene-propylene rubber with polypropylene claim 1 , and a copolymer of polyethylene claim 1 , ethylene vinyl acetate claim 1 , and α-olefin.3. The foamable masterbatch of claim 1 , wherein the chemical blowing agent (B) comprises at least one selected from the group consisting of azodicarbon amide claim 1 , p claim 1 ,p′-oxybis( ...

Esterified acids for use in polymeric materials

The present teachings contemplate a method that includes a step of providing a first amount of esterified reaction product of an acid and an epoxy-based material. The esterified reaction product may be further reacted an epoxy resin to form a polymeric epoxy. The resulting material may have a generally linear backbone, foaming and curing capability and flame retardant properties,

Polypropylene resin composition and expanded molding

A polypropylene-based resin composition is provided that can provide a foam molding that exhibits an excellent closed cell characteristic and excellent extrusion characteristics, that is light weight and has a rigid feel, and that has an excellent recyclability. This polypropylene-based resin composition contains 100 weight % or is less than 100 weight % but at least 70 weight % of component (A) below and contains 0 weight % or is greater than 0 weight % but not more than 30 weight % of component (B) below, component (A): a propylene-based resin composition that comprises at least the following two components: a propylene-α-olefin copolymer (A1) satisfying conditions (A-1) to (A-3) and a propylene homopolymer (A2), (A1) and (A2) being obtained by polymerization by a multistage polymerization method, and this propylene-based resin composition having a content of (A1) of 1 to 20 weight % and a content of (A2) of 99 to 80 weight %, having a melt flow rate in the range from 5 to 20 g/10 minutes and exhibiting strain hardening in a measurement of extensional viscosity at a temperature of 180° C. and a strain rate of 10 s −1 , (A-1) an α-olefin content of 15 to 85 weight %, (A-2) an intrinsic viscosity q of 5 to 20 dL/g, (A-3) a Mw/Mn of 5 to 15; component (B): a propylene-based resin composition comprising at least the following two components: a propylene homopolymer or a propylene-α-olefin copolymer having a content of non-propylene α-olefin of less than 1 weight % (B1), which has an MFR of 10 to 1000 g/10 minutes, and a propylene-α-olefin copolymer (B2) that has a weight-average molecular weight of 500,000 to 10,000,000 and a content of non-propylene α-olefin of 1 to 15 weight %, (B1) and (B2) being obtained by polymerization by a multistage polymerization method, and this propylene-based resin composition having a content of (B1) of 50 to 90 weight % and a content of (B2) of 50 to 10 weight %, and satisfying prescribed conditions (B-1) to (B-3).

Method for manufacturing foam-molded article, and foam-molded article

A foam-molded article has high weldability to a polypropylene-based resin molded article, a high expansion ratio, and a predetermined level of impact resistance despite using inexpensive polyethylene-based resin. The foam-molded article includes a foamed and molded base material resin in which a first polyethylene-based resin, a second polyethylene-based resin, and a polypropylene-based resin are mixed. The first polyethylene-based resin has a long-chain branched structure and a density of 0.920 g/cm 3 or more. The second polyethylene-based resin is manufactured by a low pressure slurry method, and has a long-chain branched structure and a density of 0.920 g/cm 3 or less. The second polyethylene-based resin has a melt tensile force of 70 mN or more at 160° C. The polypropylene-based resin has a compounding ratio of 20% or more by weight of the base material resin.

THERMOPLASTIC POLYMERS

Thermoplastic polymers, for example fluoropolymers, are foamed by use of a solid formulation comprising thermoplastic polymer and manganese oxalate. 114-. (canceled)15. A method of preparing a foamed thermoplastic polymer which comprises subjecting a mixture comprising an oxalate compound and a thermoplastic polymer to a temperature of greater than 300° C.16. (canceled)17. A method according to claim 15 , wherein said thermoplastic polymer to be foamed is a high performance thermoplastic polymer which:(i) has a melting point of at least 250° C.; and/or(ii) has a continuous use temperature of at least 160° C.; and/or(iii) has a melt flow rate (MFR at 372° C./5.0 kg) assessed using IS012086 in the range 1.2 to 36 g/10 min; and/or(iv) has a tensile strength, measured in accordance with ASTM D638, of at least 1500 psi; and/or(v) has a flexural modulus, in accordance with ASTM D790 at +23° C., of at least 70,000 psi; and/or(vi) has a tensile modulus, in accordance with ASTM D638, of at least 30,000.18. A method according to claim 15 , wherein said thermoplastic polymer to be foamed is selected from fluoropolymers claim 15 , high-performance polyamides (HPPAs) claim 15 , liquid crystal polymers claim 15 , polyamideimides (PAIs) claim 15 , polybenzimidazoles (PBIs) claim 15 , polybutylene terephthalates (PBTs) claim 15 , polyetherimides (PHs) claim 15 , polyimides (Pis) claim 15 , polyketones (PAEKs) claim 15 , polyphenylene sulfides (PPS) claim 15 , polysulfone derivatives claim 15 , polycyclohexane dimethyl-terephthalates (PCTs) claim 15 , syndiotactic polystyrene claim 15 , PET and polycarbonate.19. A method according to claim 15 , wherein said thermoplastic polymer to be foamed is a fluoropolymer.20. A method according to claim 15 , wherein said thermoplastic polymer to be foamed is FEP.21. A method according to claim 15 , wherein the ratio of the total weight of thermoplastic polymers divided by the total weight of oxalate compounds in said mixture is less than 1000 ...

MANUFACTURING PROCESS AND COMPOSITION FOR FOAMED PVC-P ROCK SHIELDS

A plasticized PVC formulation for foam extrusion including polyvinyl chloride, at least one plasticizer, at least one nucleating agent and a chemical blowing agent, wherein the plasticized PVC formulation is a dry blend containing 0.5 to 5% by weight of one or more nucleating agents and 0.1 to 3% by weight of the chemical blowing agent, wherein the blowing agent is sodium bicarbonate and the nucleating agent is talcum, and a foam extrusion method using said formulation. The extruded plasticized PVC foam is particularly suitable for rock shield pads used for pipeline protection. The foams are lightweight and require less consumption of materials with comparable properties to corresponding solid articles. 1. A non-woven mat that is suitable for use as a rockshield pad to protect a pipeline , the nonwoven mat being formed from a plurality of foamed PVC strands that are fused together , wherein each of the plurality of strands consists of a plasticized PVC formulation.2. The non-woven mat according to claim 1 , wherein the mat exhibits improved rock drop impact properties as compared to a like nonwoven mat formed from a plurality of unfoamed PVC strands.3. The non-woven mat according to claim 1 , wherein the non-woven mat exhibits no holidays at 4 inch rocks when tested according to ASTM G13-89 as modified to accommodate the rockshield pad.4. A method of protecting a pipeline claim 1 , comprising arranging the non-woven mat according to on the pipeline so that the pipeline is protected from rock impacts.5. The non-woven mat according to claim 1 , wherein the plasticized PVC formulation comprises from 30 to 60 percent by weight of PVC and from 20 to 40 percent by weight of plasticizer.6. The non-woven mat according to claim 1 , wherein the plasticized PVC formulation comprises from 40 to 51 percent by weight of PVC and from 26 to 31 percent by weight of plasticizer.7. A non-woven mat comprising a plurality of foamed PVC strands that are fused together claim 1 , wherein ...

FOAMED POLYURETHANE POLYMERS FOR THE REGENERATION OF CONNECTIVE TISSUE

The present invention relates to a method of synthesis and the use of foamed, cross-linked polyurethane polymers, as a three-dimensional support called a “scaffold” for cell cultures in vitro and for in vivo implantation for the regeneration of connective tissues such as adipose tissue, osteochondral tissue and bone tissue. In particular, the invention relates to a method of preparing polymers or foamed polyurethane co polymers, having improved , which involves the use of two types of catalyst, one for the cross-linking reaction and one for the foaming reaction and the use of at least one polar aprotic high-boiling solvent. Said method comprises the following steps in sequence: a) providing a solution of a polyol or a mixture of polyols in a solvent or mixture of solvents; b) heating the solution in step a) to a temperature higher than the softening temperature of the polymer precursors; c) optionally adding an organic or inorganic filler material; d) adding to the mixture in step c) an aliphatic poly-isocyanate or a mixture of poly-aliphatic isocyanates; e) adding to the mixture in step (d)) a porogenic additive; f) adding to the mixture in step e) simultaneously a cross-linking catalyst of polyols with poly-isocyanates and a foaming catalyst to form a foamed polyurethane polymer or co-polymer; g) isolating the foamed polyurethane polymer or co-polymer produced in step f). 1hydrophilia. A method for the preparation of polymer or co-polymer polyurethane foams with improved , which involves the use of a catalyst for the cross-linking reaction and a catalyst for the foaming reaction , comprising the following steps in sequence:a) providing a solution of a polyol or a mixture of polyols in a solvent or mixture of solvents, in which the solvent is a high-boiling solvent having a boiling point of at least 15° C. higher than the softening temperature of the polyols used;b) heating the solution in step a) to a temperature higher than the softening temperature of said ...

LIQUID MODIFIER AS CARRIER SYSTEM FOR CFAS IN FOAMED POLYSTYRENES

The invention relates to a liquid formulation for foaming a thermoplastic polystyrene, said formulation comprising 1. A liquid formulation for foaming a thermoplastic polystyrene , said formulation comprisinga) 25-90 wt. % of a liquid carrier; andb) at least one endothermic chemical blowing agent selected from the group consisting of tricarboxylic acids, salts of tricarboxylic acids and esters of tricarboxylic acids.2. The formulation as claimed in claim 1 , wherein the formulation is a dispersion and wherein the endothermic chemical blowing agent is dispersed in the liquid carrier.3. The formulation as claimed in claim 1 , wherein the chemical blowing agent is selected from the group consisting of succinic acid claim 1 , succinic acid salts claim 1 , succinic acid esters claim 1 , adipic acid claim 1 , adipic acid salts claim 1 , adipic acid esters claim 1 , phthalic acid claim 1 , phthalic acid salts claim 1 , phthalic acid esters claim 1 , citric acid claim 1 , citric acid salts and citric acid esters.4. The formulation as claimed in claim 1 , wherein the chemical blowing agent is selected from the group consisting of citric acid claim 1 , citric acid salts and citric acid esters.5. The formulation as claimed in claim 1 , wherein the liquid carrier comprises an aqueous medium claim 1 , an organic solvent-based medium claim 1 , an oil-based medium or a combination thereof.6. The formulation as claimed in claim 1 , wherein the liquid carrier comprises a vegetable oil claim 1 , a mineral oil claim 1 , an acetylated monoglyceride claim 1 , a sorbitan oleate claim 1 , an ethoxylated sorbitan oleate or a mixture thereof.7. The formulation as claimed in claim 1 , further comprising customary additives selected from the group consisting of colorants claim 1 , stabilizers claim 1 , antioxidants claim 1 , antibacterial agents claim 1 , neutralizers claim 1 , antistatic agents claim 1 , antiblocking agents claim 1 , optical brighteners claim 1 , heavy metal inactivation ...

SUPER ABSORBENT RESIN

The present invention relates to a super absorbent resin, and the super absorbent resin can exhibit a fast absorption rate and high gel strength even in a partially swollen state through the size optimization of partially swollen gel particles. Therefore, the use of the super absorbent resin can effectively prevent a rewetting phenomenon. 1. A superabsorbent polymer having an average particle size of 300 μm to 600 μm , wherein a gel , which is obtained by swelling 1 g of the superabsorbent polymer in 20 g of 0.9% by weight of a sodium chloride aqueous solution for 10 minutes , has an average particle size of 600 μm to 1000 μm.2. The superabsorbent polymer of claim 1 , wherein a particle having a particle size of 300 μm to 600 μm is 45% by weight to 85% by weight.3. The superabsorbent polymer of claim 1 , wherein a particle having a particle size of more than 0 μm and 300 μm or less is 15% by weight to 25% by weight.4. The superabsorbent polymer of claim 1 , wherein a fraction of a gel having a particle size of more than 0 μm and 600 μm or less is 5% by weight to 30% by weight.5. The superabsorbent polymer of claim 1 , wherein centrifuge retention capacity in a physiological saline solution is 28 g/g to 35 g/g claim 1 , absorbency under load of 0.9 psi in the physiological saline solution is 14 g/g to 22 g/g claim 1 , free swell gel bed permeability in the physiological saline solution is 40 darcy to 100 darcy claim 1 , and a vortex time is 20 seconds to 60 seconds.6. A preparation method comprising the steps of: performing crosslinking polymerization of a monomer mixture in the presence of an internal crosslinking agent to form a water-containing gel polymer claim 1 , the monomer mixture including water-soluble ethylene-based unsaturated monomers having acidic groups which are at least partially neutralized claim 1 , a foaming agent claim 1 , a foam promoter claim 1 , and a surfactant; drying claim 1 , pulverizing claim 1 , and size-sorting the water-containing gel ...

COMPOSITIONS AND METHODS FOR USE IN THE PREPARATION OF HYDROPHOBIC SURFACES

Polymer films having a surface with increased hydrophobicity or enhanced hydrophobicity or improved hydrophobicity or super-hydrophobicity; composite structures such as multilayer polymer sheets comprising the polymer films; methods and systems of making such polymer films; polymer blends from which to make such polymer films; masterbatches or masterbatch compositions useful for making such polymer blends; as well as methods and systems for making such polymer blends and such masterbatches or masterbatch compositions. 2. The masterbatch composition of claim 1 ,wherein the masterbatch is in the form of a plurality of particles suitable for feeding to an extruder.3. The masterbatch composition of claim 1 ,where said polyolefin component makes up between 15% and 86% weight percent of the masterbatch composition.4. The masterbatch composition of claim 1 ,wherein said fluoropolymer component makes up between 10% and 15% weight percent of the masterbatch composition.5. The masterbatch composition of claim 1 ,wherein said blowing agent component makes up between 4% and 70% weight percent of the masterbatch composition.6. The masterbatch composition of claim 1 ,wherein said foamable polyolefin component, said fluoropolymer component, and said blowing agent component together comprise not less than 90% by weight of the masterbatch composition.7. The masterbatch composition of claim 1 ,wherein said polyolefin component is at least 90% by weight of a foamable polyolefin selected from the group consisting of: polyethylene (PE), polypropylene (PP), and a combination thereof.8. The masterbatch composition of claim 1 ,wherein at least one fluoropolymer making up said fluoropolymer component is selected from the group consisting of: a fluoro homopolymer, a fluoro copolymer, a fluoro-elastomer, an acrylic-modified fluoropolymer, and a combination of two or more of said materials.9. The masterbatch composition of claim 8 ,wherein said fluoropolymer component is at least 50% by weight ...

Method for producing polyethylene-based resin extruded foam sheet, polyethylene-based resin extruded foam sheet, and plate interleaf sheet using the same for glass sheets

Provided is a method for producing a polyethylene-based resin extruded foam sheet by extruding and foaming a foamable molten resin composition formed by kneading a mixture containing a low-density polyethylene, a physical blowing agent, and an antistatic agent, wherein the foam sheet has a thickness in a range of from 0.05 to 0.5 mm, and the antistatic agent is a polymeric antistatic agent having a melting point whose different from the melting point of the low-density polyethylene is in a range of from −10 to +10° C., and having a melt flow rate of 10 g/10 min or more. This method enables a novel polyethylene-based resin extruded foam sheet to be obtained that is of high quality such that formation of a small hole or a through-hole has been reduced or eliminated, and has both excellent strength and a shock-absorbing property despite a very small thickness even in medium- or long-term continuous production, and besides, exhibits a sufficient antistatic property, thus suitable as a glass plate interleaf sheet.

Compositions Comprising Propylene-Based Elastomers, Foamed Layers Made Therefrom, and Methods of Making The Same

The present disclosure relates to compositions comprising a propylene-based elastomer, a branched polymer, and a blowing agent. The present disclosure also relates to foamed layers and articles made from such layers. 1. A composition comprising:{'sub': 4', '20, 'a propylene-based elastomer comprising propylene and from 3 wt % to 35 wt % by weight ethylene and/or Cto Calpha-olefin derived units based upon the weight of the propylene-based elastomer, the elastomer having a heat of fusion, as determined by DSC, of less than or equal to 75 J/g, and a melting point, as determined by DSC, of less than or equal to 110° C.;'}a branched polymer having a branching index of less than 0.95; anda blowing agent.2. The composition of claim 1 , wherein the propylene-based elastomer comprises from 5 wt % to 25 wt % ethylene-derived units based upon weight of the propylene-based elastomer.3. The composition of claim 1 , wherein the propylene-based elastomer has a melt flow rate claim 1 , as determined by ASTM D1238 at 2.16 kg claim 1 , 230° C. claim 1 , of from 0.2 g/10 min to 50 g/10 min.4. The composition of claim 1 , wherein the propylene-based elastomer has a density of from 0.855 g/cmto 0.900 g/cm.5. The composition of claim 1 , wherein the propylene-based elastomer has a melt strength of less than 5 cN.6. The composition of claim 1 , wherein the propylene-based elastomer is present in an amount of from 30 wt % to 99.5 wt % based upon the weight of the composition.7. The composition of claim 1 , wherein the branched polymer is an ethylene polymer.8. The composition of claim 7 , wherein the ethylene polymer is at least one of polyethylene claim 7 , ethylene vinyl acetate claim 7 , and ethyl methyl acrylate.9. The composition of claim 1 , wherein the branched polymer has a melt index as determined by ASTM 1238 (190° C. claim 1 , 2.16 kg) claim 1 , of from 0.2 g/10 min to 20 g/10 min.10. The composition of claim 1 , wherein the branched polymer has a branching index (g′) of less ...

Three-dimensional printing with pore-promoting agents

The present disclosure describes multi-fluid kits for three-dimensional printing, materials kits for three-dimensional printing, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a pore-promoting agent. The fusing agent can include water and a radiation absorber. The radiation absorber can absorb radiation energy and convert the radiation energy to heat. The pore-promoting agent can include water and a water-soluble pore-promoting compound. The pore-promoting compound can chemically react at an elevated temperature to generate a gas.

Super Absorbent Polymer And Method For Producing Same

A super absorbent polymer according to the present invention has an excellent discoloration resistance property even under high temperature/high humidity conditions, while maintaining excellent absorption performance, and is preferably used for hygienic materials such as diapers, and thus can exhibit excellent performance. 1. A super absorbent polymer comprising:a base polymer powder comprising a first cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; anda surface cross-linked layer formed on the base polymer powder and comprising a second cross-linked polymer in which the first cross-linked polymer is further cross-linked via a surface crosslinking agent,wherein the super absorbent polymer has:a 15-min gel-AUL at 0.3 psi of 13 g/g or more,an absorbency under load (AUL) of 18 g/g or more,a gel bed permeability (GBP) of 30 darcy or more, anda vortex time of 45 seconds or less as measured according to the measurement method of Vortex.2. The super absorbent polymer of claim 1 , wherein the super absorbent polymer has a 15-min gel-AUL at 0.6 psi of 12 g/g or more.3. The super absorbent polymer of claim 1 , wherein the super absorbent polymer has a centrifuge retention capacity (CRC) of 29 g/g or more.4. The super absorbent polymer of claim 1 , wherein the super absorbent polymer has an average particle diameter of 300 μm to 600 μm.5. The super absorbent polymer of claim 1 , wherein in the super absorbent polymer claim 1 , a super absorbent polymer having a particle diameter of 300 μm to 600 μm is contained in an amount of 45 to 85% by weight.6. A method for producing a super absorbent polymer claim 1 , comprising the steps of:crosslinking a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups in the presence of an internal crosslinking agent, a foaming agent and a surfactant to form a hydrogel polymer containing a first crosslinked polymer;coarsely ...

FOAMABLE POLYOLEFIN COMPOSITION PROVIDING INCREASED FLEXIBILITY

The invention relates to a foamable polymer composition comprising a polyolefin polymer which polyolefin polymer does not bear silane moieties and comprises 20 to 99.99 wt. % linear low density polyethylene, and a blowing agent in an amount of 0.01 to 3 wt. % based on the total foamable polymer composition, wherein the blowing agent consists of citric acid and/or derivatives of citric acid or mixtures thereof. Further the invention relates to a foamable polymer composition comprising a polyolefin polymer, and a blowing agent in an amount of 0.01 to 3 wt. % based on the total foamable polymer composition, wherein the blowing agent consists of expandable polymeric microspheres, and the composition does not comprise fluororesin. Further the invention relates to a foamed polymer composition obtained by foaming this foamable polymer composition. Further the invention relates to the use of the foamable composition or the foamed polymer composition for a layer of a cable and a cable comprising at least one layer which comprises the

Foamable High Density Polyethylene Compositions and Articles Made Therefrom

The present invention relates to modified high density polyethylene, foamable compositions and foam or foamed articles made therefrom. The invention also relates to processes to make the same. 1. A process to produce a polyethylene foam or foamed article comprising:{'sup': '3', 'a) providing a starting high density polyethylene having a density of at least 0.930 g/cmas determined by ASTM D 792;'}{'sup': '3', 'sub': 2', '21', '21', '2, 'b) treating the starting high density polyethylene with oxygen or peroxide to produce a modified high density polyethylene having one or more of i) a density of at least 0.930 g/cm, as determined by ASTM D 792, ii) a melt index I(190° C./2.16 kg) within a range of from 0.50 g/10 min to 4.0 g/10 min, as determined by ASTM 1238, iii) a melt index I(190° C./21.6 kg) within a range of from 50 g/10 min to 400 g/10 min, as determined by ASTM 1238, and iv) a melt flow ratio I/Iwithin a range of from 40 to 100, as determined by ASTM 1238;'}c) admixing the modified high density polyethylene with a foaming agent to produce a foamable composition; andd) foaming the foamable composition to form a polyethylene foam or foamed article, where the polyethylene foam or foamed article has a density reduction of at least 70% from the density of the modified high density polyethylene.2. The process of claim 1 , wherein the polyethylene foam or foamed article has a foam density within a range of from 0.10 g/cmto 0.50 g/cm.3. The process of or claim 1 , wherein the polyethylene foam or foamed article has a closed cell structure.4. The process of any one of - claim 1 , wherein the peroxide has a half-life temperature of greater than 130° C. claim 1 , measured at 0.1 hours.5. The process of any one of - claim 1 , wherein the peroxide comprises dicumyl peroxide claim 1 , 2 claim 1 ,5-dimethyl-2 claim 1 ,5-di-(cert-butyl peroxy) claim 1 , tert-butyl cumyl peroxide claim 1 , di-tert-butyl peroxide claim 1 , or cumene hydroperoxide.6. The process of any one of - ...

POLYOL PREMIXES, THERMALLY INSULATING RIGID POLYURETHANE FOAMS AND METHODS FOR THEIR PRODUCTION

Polyol premixes and thermally insulating rigid polyurethane foams, such as those that can be used as a thermal insulation medium in the construction of refrigerated storage devices, are disclosed. A polymer polyol having a OH number of greater than 260 mg KOH/g is utilized. The resulting polyurethane foams can exhibit improved thermal insulation properties without sacrificing other important physical and processing properties. 1. A polyol premix comprising:(a) a polyol composition comprising a polymer polyol having an OH number of greater than 260 mg KOH/g;(b) a catalyst;(c) a physical blowing agent composition comprising at least 50% by weight, based on the total weight of the physical blowing agent composition, of a hydrocarbon; and(d) a carbon dioxide generating chemical blowing agent.2. The polyol premix of claim 1 , wherein the polymer polyol comprises polymer particles comprising a reaction product of a reaction mixture comprising:(i) a base polyol;(ii) an ethylenically unsaturated compound,optionally(iii) a preformed stabilizer, and(iv) a free radical initiator.3. The polyol premix of claim 2 , wherein the base polyol comprising a polyether polyol having a functionality of 2 to 6 and an OH number of at least 300 mg KOH/g.4. The polyol premix of claim 2 , wherein the content of ethylene oxide units in the base polyol claim 2 , based on the total weight of the base polyol claim 2 , is no more than 20% by weight.5. The polyol premix of claim 2 , wherein the ethylenically unsaturated compound comprises styrene and acrylonitrile at a weight ratio of styrene to acrylonitrile (S:AN) of 80:20 to 20:80.6. The polyol premix of claim 1 , wherein the polymer polyol has an OH number of at least 280 mg KOH/g.7. The polyol premix of claim 1 , wherein the polymer polyol is present in an amount of at least 30% by weight claim 1 , based on the total weight of the polyol composition.8. The polyol premix of claim 1 , wherein the polyol composition comprises an aromatic amine- ...

POLYOL PREMIXES, POLYURETHANE FOAM-FORMING COMPOSITIONS AND CLOSED-CELLED RIGID POLYURETHANE FOAMS FORMED THEREFROM

Polyol premixes are described that are suitable for use in the preparation of polyurethane foam-forming reaction mixtures. These foam-forming reaction mixtures can produce closed-celled polyurethane foams exhibit a low level of water absorption. Also described are various uses of such reaction mixtures, including injecting the reaction mixture beneath at least a portion of an earth-supported structure and allowing the polyurethane foam-forming reaction mixture to react and form a closed-celled, rigid polyurethane foam beneath the earth-supported structure. 1. A polyol premix comprising:(a) a polyol;(b) a carbon dioxide generating chemical blowing agent;(c) an ester that does not contain Zerewitinoff-active hydrogen atoms;(d) a catalyst; and(e) a polydimethylsiloxane-polyalkyleneoxide copolymer having a weight average molecular weight of no more than 5000 gram/mole and a silicon content of at least 12% by weight, based on the total weight of the polydimethylsiloxane-polyalkyleneoxide copolymer.2. The polyol premix of claim 1 , wherein the polyol premix comprises an aliphatic amine-initiated polyether polyol having an OH number of at least 400 mg KOH/g and up to 800 mg KOH/g claim 1 , and a functionality of 3.5 to 4.5.3. The polyol premix of claim 2 , wherein the aliphatic amine-initiated polyether polyol is present in an amount of 20 to 70% by weight claim 2 , based on the total weight of polyols in the polyol premix.4. The polyol premix of claim 2 , wherein the polyol premix comprises an alkanolamine-initiated polyether polyol having an OH number of 500 to 900 mg KOH/g and a functionality of 2.5 to 3.5.5. The polyol premix of claim 4 , wherein the aliphatic amine-initiated polyether polyol and the alkanolamine-initiated polyether polyol are present in a relative ratio claim 4 , by weight claim 4 , of 1:5 to 5:1.6. The polyol premix of claim 4 , wherein the polyol premix comprises a saccharide-initiated polyether polyol having an OH number of 200 to 600 mg KOH/g and ...

POLYOLEFIN-BASED COMPOSITION FOR A LID AND METHODS OF MAKING AND USING

Aspects of the present disclosure relate to a polyolefin composition and processes suitable for use in forming a lid for a hot food or beverage container that has a stiffness comparable to a similar lid made using high impact polystyrene and a density less than water at 23° C. 1. A lid for a food or beverage container made from a sheet comprising at least one polyolefin with at least one filler , and having a plurality of expanded cells providing the lid with a density of less than 1 g/cmat 23° C.2. The lid of wherein the at least one polyolefin is selected from the group consisting of polypropylene homopolymers claim 1 , polypropylene impact copolymers claim 1 , ethylene-propylene copolymers claim 1 , high density polyethylene claim 1 , and combinations thereof.3. The lid of wherein the polyolefin comprises a polypropylene having one of:a flexural modulus of at least about 290,000 psi;a heat deflection temperature of at least 95° C.; ora combination of a flexural modulus of at least about 290,000 psi and a heat deflection temperature of at least 95° C.4. The lid of wherein the at least one filler is selected from talc claim 1 , calcium carbonate claim 1 , mica claim 1 , wollastonite claim 1 , wood fiber claim 1 , paper powder claim 1 , cellulose fiber claim 1 , or combinations thereof.5. The lid of wherein a total amount of the at least one filler is about 12 wt. % or greater.6. The lid of wherein a stiffness of the lid is comparable to a similar lid made from unexpanded high impact polystyrene claim 1 , and wherein stiffness is based on a weight required to induce a 0.25 inch deflection of the lid when the lid is placed on a cup holding liquid at 200° F.7. The lid of wherein the plurality of expanded cells have an average cell diameter in the range of about 0.01 to 0.15 mm.8. The lid of comprising at least one of:{'sup': '3', 'a density in the range of about 0.900 to 0.999 g/cm;'}a density that allows the lid to float in water;a shrinkage rate of about 1.3 to 1.5% ...

Thermoplastic polymers

Thermoplastic polymers, for example fluoropolymers, are foamed by use of a solid formulation comprising thermoplastic polymer and an oxalate compound which includes a moiety selected from potassium, calcium, titanium, iron, cobalt, nickel, copper, zinc, zirconium and barium.

PRODUCTION OF POLYISOCYANURATE FOAM PANELS

The present invention discloses the production of panels by a discontinuous process. The panels are produced by injecting a polyisocyanurate foam forming composition into the mold cavity at reduced pressure. The combination of certain polyisocyanurate foam forming formulation and the reduced pressure in the mold cavity allows production of and resulting sandwich panels in a discontinuous process where the produced panels are characterized by improved fire resistance. 2. A method of making a sandwich panel having two exterior shells and an intermediate polyisocyanurate (PIR) structural foam core claim 1 , comprising undertaking the method of claim 1 , wherein said closed mold cavity is defined by the two exterior shells and an annular frame.3. A method according to claim 1 , wherein the aromatic polyester polyol is at least 50 weight percent of the total amount of polyol.4. A method according to claim 1 , wherein the reaction mixture has an isocyanate index of greater than 350.5. A method according to claim 1 , wherein the mold cavity absolute pressure is from 800 to 950 mbar.6. A method according to claim 1 , wherein the blowing agent component comprises a physical and chemical blowing agent.7. A method according to claim 6 , wherein the chemical blowing agent is water claim 6 , formic acid or a combination thereof.8. The method according to claim 6 , wherein the physical blowing agent is pentane.9. A method according to claim 1 , wherein the foam has an applied density of 30 to 75 kg/m.10. A method according to claim 1 , wherein the reaction mixture additionally comprises a silicone surfactant.11. A method according to claim 1 , wherein the flame retardant is a halogen free flame retardant. Polyisocyanurate foams are in general prepared by reacting a stoichiometric excess of polyisocyanate with a polyol or polyol mixture in the presence of a catalyst, a blowing agent, and generally other optional additives such as surfactants and the like. Polyisocyanurate foams ...

FOAMABLE, MULTICOMPONENT COMPOSITION WHICH FORMS AN INSULATION LAYER AND USE OF SAID COMPOSITION

A foamable, insulating-layer-forming multi-component composition has at least one alkyoxysilane-functional polymer, at least one insulating-layer-forming fire-protection additive, a blowing-agent mixture, and a cross-linking agent. The at least one alkoxysilane-functional polymer contains, as terminal groups and/or as side groups along the polymer chain, alkoxy-functional silane groups of a formula —Si(R)(OR). In this formula, Rstands for a linear or branched C-Calkyl moiety, Rfor a linear or branched C-alkyl moiety and m for an integer from 0 to 2. The composition can be a foam-in-place foam or can be used for the manufacture of molded blocks. 1. A foamable , insulating-layer-forming multi-component composition , comprising at least one alkoxysilane-functional polymer , at least one insulating-layer-forming fire-protection additive , a blowing-agent mixture and a cross-linking agent , {'br': None, 'sup': 1', '2, 'sub': m', '3-m, '—Si(R)(OR)\u2003\u2003(I),'}, 'wherein the at least one alkoxysilane-functional polymer comprises, as a terminal group and/or as a side group along a chain of the polymer, an alkoxy-functional silane group of the general formula (I)'}{'sup': 1', '2, 'sub': 1', '16', '1', '6, 'wherein Ris a linear or branched C-Calkyl moiety, Ris a linear or branched C-Calkyl moiety and m is an integer from 0 to 2,'}wherein individual ingredients of the blowing-agent mixture are separated from one another to inhibit reaction prior to mixing, and the cross-linking agent is separated from the alkoxysilane-functional polymer to inhibit reaction prior to mixing.2. The composition according to claim 1 , wherein the blowing-agent mixture comprises compounds that are capable of reacting with one another claim 1 , if mixed claim 1 , to form carbon dioxide (CO) claim 1 , hydrogen (H) or oxygen (O).3. The composition according to claim 2 , wherein the blowing-agent mixture comprises an acid and a compound that is reactive with the acid to form carbon dioxide.4. The ...

FORMAMIDE-FREE FOAM AND METHOD FOR PREPARING THE SAME

A formamide-free foam prepared by using sodium bicarbonate as a foaming agent and electron-beam irradiation for crosslinking is revealed. After copolymer and sodium bicarbonate being mixed evenly, the mixture is heated and compounded to form an intermediate. Then the intermediate is pressed and injected to form a sheet. Next the intermediate is irradiated by an electron-beam to form crosslinks therein. At last the intermediate is heated and foamed to get a formamide-free foam. Compared with foam produced by using azodicarbonamide as the foaming agent available now, formamide-free foam not only causes no harm to human health but also gives no negative effect to the environment during recycling. Thus the formamide-free foam is really environmentally friendly. 1. A method for preparing a formamide-free foam comprising the steps of:compounding ethylene vinyl alkanoate copolymer with a weight percent of 50%-95% and a foaming agent with a weight percent of 5%-50% to get an intermediate; wherein the foaming agent is sodium bicarbonate;pressing and injecting the intermediate;irradiating the intermediate by an electron beam to carry out crosslinking of the intermediate; andheating and foaming the intermediate to get the formamide-free foam.2. The method as claimed in claim 1 , wherein the formamide-free foam further includes a polyolefin copolymer;wherein a weight percent of a mixture of the ethylene vinyl alkanoate copolymer and the sodium bicarbonate is ranging from 40% to 60% while a weight percent of the polyolefin copolymer is ranging from 40% to 60%.3. The method as claimed in claim 1 , wherein the ethylene vinyl alkanoate copolymer is ethylene vinyl acetate (EVA) copolymer.4. The method as claimed in claim 2 , wherein the polyolefin copolymer includes polyethylene (PE) copolymer and polypropylene (PP) copolymer.5. The method as claimed in claim 1 , wherein compounding temperature is ranging from 80° C. to 130° C. in the step of compounding.6. The method as claimed in ...

COMPOSITIONS FOR COMPOUNDING, EXTRUSION AND MELT PROCESSING OF FOAMABLE AND CELLULAR FLUOROPOLYMERS

The present invention relates generally to the use of talc as a chemical foaming agent in perfluoropolymers to form foamable and foamed compositions. For example, in one aspect, a foamable composition is disclosed, which comprises (i) one or more base perfluoropolymers comprising at least 50 percent by weight of the composition, and (ii) talc blended with the one or more base perfluoropolymers, where the talc comprises 3 percent to about 15 percent by weight of the composition. Each of the perfluoropolymers is selected from the group consisting of tetrafluoroethylene/perfluoromethylvinyl ether copolymer (MFA), hexafluoropropylene/tetrafluoroethylene copolymer (FEP) and perfluoroalkoxy (PFA) and any blend thereof, where hydrogen-containing fluoropolymers are absent from the composition. The one or more base perfluoropolymers are melt-processable at one or more elevated processing temperatures of at least about 600° F. at which the talc functions as a chemical foaming agent for extrusion or mold processing of the composition into a foamed article having uniform cell structures. 120-. (canceled)21. A method for manufacturing a foamed article comprising:heating a composition comprising a melt-processable perfluoropolymer and talc to a processing temperature of at least 600° F. at which said talc functions as a chemical foaming agent, thereby causing the foaming of said composition at a foaming rate in a range from 20% to 50% so as to form a foamed article;wherein said melt-processable perfluoroploymer is selected from the group consisting of tetrafluoroethylene/perfluoromethylvinyl ether copolymer (MFA), hexafluoropropylene/tetrafluoroethylene copolymer (FEP), perfluoroalkoxy (PFA) and any blend thereof, andwherein said talc is the only foaming agent in said composition and wherein said foaming is achieved without gas injection.22. The method of claim 21 , wherein said processing temperature is in a range of about 600° F. to about 660° F.23. The method of claim 21 , ...

Preparation method and application of reactive polyurethane flame retardant

The polyurethane flame retardant is prepared by compounding poly(diphosphophosphazene) (PDPP) and derivatives thereof, poly(diphosphate phosphazene) (MPDPP) (where M=Mg 2+ , Ca 2+ , transition metal ions, rare earth ions and the like) and poly(diphosphonic phosphazene). Since a phosphate group in the PDPP and an unreacted phosphate group in the MPDPP in the compound and an unreacted hydroxyl in the phosphate group may react with isocyanate, the flame retardant is a reactive flame retardant. Due to the reaction between the flame retardant and the isocyanate, the flame retardant is uniformly distributed in polyurethane and has a better flame-retardant effect. The flame retardant contains multiple flame-retardant components, namely polyphosphazene group, phosphate ester and phosphate salt. Due to the synergistic effect, the flame retardant has good flame-retardant properties, and can be used for various polyurethane materials.

BEAD FOAM, RESIN COMPOSITE PROVIDED WITH SAME, AND METHOD FOR PRODUCING BEAD FOAM

A bead expanded article has a plurality of expanded particles, in which the bead expanded article has a property that a value obtained by dividing a 10% compression stress (MPa) of the bead expanded article by a density (g/cm) is 9.0 (MPa·cm/g) or more. 1. A bead expanded article comprising a plurality of expanded particles , wherein said bead expanded article has a property that a value obtained by dividing a 10% compression stress (MPa) of said bead expanded article by a density (g/cm) is 9.0 (MPa·cm/g) or more.2. The bead expanded article according to claim 1 , wherein said bead expanded article has a property that an average air permeability resistance measured from a piece cut from said bead expanded article is 30 s or more.3. The bead expanded article according to claim 1 , wherein said bead expanded article is used in formation of a resin composite containing the bead expanded article as a core material and a fiber-reinforced resin layer covering said core material.4. The bead expanded article according to claim 1 , wherein said bead expanded article contains a thermoplastic resin composition containing a polycarbonate-based resin as a main component.5. The bead expanded article according to claim 1 , wherein said bead expanded article has a fusion rate of 50% or more and/or an open cell rate of 20% or less.6. A resin composite comprising a bead expanded article as a core material and a fiber-reinforced resin layer covering said core material claim 1 , wherein said core material is the bead expanded article according to .8. The method for producing a bead expanded article according to claim 7 , wherein said thermoplastic resin composition contains a polycarbonate-based resin as a main component. The present invention relates to a bead expanded article, a resin composite comprising the same, and a method for producing a bead expanded article. More particularly, the present invention relates to a bead expanded article that can provide a resin composite ...

Vehicle tyre, the tread of which comprises a heat-expandable rubber composition

A vehicle tyre includes a tread formed of a rubber composition that is heat-expandable when unvulcanized, and expanded when vulcanized. When unvulcanized, the composition includes from 50 to 100 phr of a copolymer based on styrene and butadiene; optionally from 0 to 50 phr of another diene elastomer, such as a polybutadiene or a natural rubber; more than 50 phr of a reinforcing filler, such as silica and/or carbon black; between 5 and 25 phr of a sodium- or potassium-including carbonate or hydrogencarbonate; and between 2 and 15 phr of a carboxylic acid having a melting point between 60° C. and 220° C., such as citric acid. A total content of the carboxylic acid and the carbonate or the hydrogencarbonate is greater than 10 phr. Presence of the carboxylic acid and the carbonate or the hydrogencarbonate makes it possible to significantly reduce noise emitted by the tyre during running.

CORE MATERIAL FOR FIBER REINFORCED COMPOSITE AND FIBER REINFORCED COMPOSITE HAVING THE SAME

To provide a core material for a fiber reinforced composite having an excellent workability upon being composited with a fiber reinforcing material. A core material for a fiber reinforced composite of the present disclosure comprises a molded product of expanded beads containing a thermoplastic resin, and having a heat shrinkage onset temperature of 80° C. or higher, a linear expansion coefficient of 10×10mm/mm·° C. or less, and a ratio of change in dimensions with heating at 130° C. of −4.0% to 0%. 1. A core material for a fiber reinforced composite comprising:{'sup': '−5', 'a molded product of expanded beads containing a thermoplastic resin, and having a heat shrinkage onset temperature of 80° C. or higher, a linear expansion coefficient of 10×10mm/mm·° C. or less, and a ratio of change in dimensions with heating at 130° C. of −4.0% to 0%.'}2. The core material for a fiber reinforced composite of claim 1 , wherein the thermoplastic resin has a ratio (G′2/G′1) of a storage modulus (G′1) at (Tp−30)° C. and a storage modulus (G′2) at 150° C. is 0.25 to 0.95 claim 1 , where Tp is a temperature where a loss tangent tan δ reaches a maximum value between 70° C. and 200° C.3. The core material for a fiber reinforced composite of claim 1 , wherein a concentration of an aliphatic hydrocarbon gas in the molded product of expanded beads is 500 ppm by volume or less.4. The core material for a fiber reinforced composite of claim 1 , wherein the thermoplastic resin contains 30% by mass to 75% by mass of a polyphenylene ether resin.5. The core material for a fiber reinforced composite of claim 1 , wherein a content of a flame retardant in the thermoplastic resin is 3% by mass or less relative to 100% by mass of the thermoplastic resin.6. A fiber reinforced composite comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the core material for a fiber reinforced composite of ; and'}a skin material comprising fibers and a resin, the skin material being disposed on at least a ...

Process for producing a rigid polyurethane-isocyanurate foam

The invention provides a process for producing rigid polyurethane-polyisocyanurate foams using polyols having a high proportion of secondary hydroxyl end groups. The invention further relates to the rigid polyurethane-polyisocyanurate foams thus obtainable and to the use thereof in the production of composite elements from rigid polyurethane-polyisocyanurate foams and suitable outer layers. The invention further provides the composite elements thus obtainable.

Method for chemical foaming in the presence of reinforcing fillers

The present invention relates to a method for preparing a foamed item, including the following steps: a) heating a composition including, or consisting of, at least one polyamide PA, at least one compound U including at least one urethane function, particularly a polyurethane PU, at least one reinforcing filler, the content of which is no lower than 10 wt % of the total weight of the composition, and temperature T such that: the compound U directly or indirectly generates CO 2 , the polyamide is melted, and in particular, such that the composition is injectable; b) injecting or extruding said composition, the injection particularly being injection molding; and c) recovering the foamed item and an expandable granule including, or consisting of, at least one polyamide, at least one compound U, particularly a polyurethane PU, and at least one reinforcing filler, the content of reinforcing filler being no lower than 10 wt % of the total weight of the composition. The invention also relates to the use of such a composition of such a granule, or a foam or foamed item.

COMPOSITION THAT IS SELF-FOAMING IN AN ACID MEDIUM, AND METHOD FOR PREPARING SAME

A composition that is self-foaming in an acid medium, and includes: at least one hydrophilic polymer, at least one compound capable of crosslinking the hydrophilic polymer by forming ionic bonds, at least one foaming agent, and at least one foam stabilizer agent; and to the use thereof as a drug, particularly for preventing and/or treating obesity. 116-. (canceled)17. A composition comprising:at least one hydrophilic polymer selected from polysaccharides, polysaccharide derivatives and mixtures thereof,at least one compound capable of crosslinking the hydrophilic polymer by forming ionic bonds, selected from the group consisting in the salts of divalent cations, the salts of trivalent cations and mixtures thereof,at least one foaming agent selected from salts capable of decomposing into gas and into monovalent cations, andat least one foam stabilizer.18. The composition as claimed in claim 17 , wherein the hydrophilic polymer is selected from the alginates.19. The composition as claimed in claim 17 , wherein the content by weight of hydrophilic polymer is from 10% to 99.5% claim 17 , the contents being expressed in weight of dry matter.20. The composition as claimed in claim 17 , wherein the compound capable of crosslinking the hydrophilic polymer by forming ionic bonds comprises at least one metal salt.21. The composition as claimed in claim 17 , wherein the compound capable of crosslinking the hydrophilic polymer by forming ionic bonds is selected from salts of divalent cations.22. The composition as claimed in claim 21 , wherein the compound capable of crosslinking the hydrophilic polymer by forming ionic bonds is chosen from the group consisting of calcium carbonate CaCO claim 21 , manganese carbonate MnCO claim 21 , silver carbonate AgCO claim 21 , iron carbonate FeCO claim 21 , copper carbonate CuCO claim 21 , magnesium carbonate MgCO claim 21 , hydroxyapatite Ca(PO)OHand mixtures thereof.23. The composition as claimed in claim 22 , wherein the compound ...

FUNCTIONALIZED PARTICULATE BICARBONATE AS BLOWING AGENT, FOAMABLE POLYMER COMPOSITION CONTAINING IT, AND ITS USE IN MANUFACTURING A THERMOPLASTIC FOAMED POLYMER

A chemical blowing agent for foaming a thermoplastic polymer, for example PVC plastisol or a polymer resin in an extrusion process, said chemical blowing agent comprising a functionalized particulate bicarbonate containing at least one additive, preferably excluding an exothermic blowing agent. The additive may be selected from the group consisting of rosin acids, any derivative thereof, and salts thereof; or any combinations thereof, such as comprising abietic acid, dihydroabietic acid, neoabietic acid, a rosin acid ester, or mixtures thereof. The particulate bicarbonate may be preferably functionalized by spray-coating, extrusion or co-grinding with at least one additive. The functionalized particulate bicarbonate may comprise 50 wt % to less than 100 wt % of the bicarbonate component, and 0.02-50 wt % of the additive. The functionalized particulate bicarbonate may further comprise 0.1-5 wt % silica. A foamable polymer composition comprising such chemical blowing agent. A process for manufacturing a foamed polymer, such as foamed PVC, comprising shaping and heating the foamable polymer composition, and a foamed polymer obtained by such process. 1. A chemical blowing agent for foaming a thermoplastic polymer precursor ,said chemical blowing agent comprising a functionalized particulate bicarbonate,wherein said functionalized particulate bicarbonate contains at least one additive, andwherein said additive in the functionalized particulate bicarbonate comprises rosin acid, any derivative thereof, any salt thereof, or any combinations thereof.2. The chemical blowing agent according to claim 1 , wherein the blowing agent does not contain any further blowing agent which is an exothermic blowing agent claim 1 , or wherein the chemical blowing agent does not contain a compound which liberates nitrogen gas during heating claim 1 , or wherein the chemical blowing agent does not contain a compound which liberates ammonia gas during heating.3. The chemical blowing agent ...

FUNCTIONALIZED PARTICULATE BICARBONATE AS BLOWING AGENT, FOAMABLE POLYMER COMPOSITION CONTAINING IT, AND ITS USE IN MANUFACTURING A THERMOPLASTIC FOAMED POLYMER

A chemical blowing agent for foaming a thermoplastic polymer, for example PVC plastisol or a polymer resin in an extrusion process, said chemical blowing agent comprising a functionalized particulate bicarbonate containing at least one polyoxyalkylene additive, preferably excluding an exothermic blowing agent. The polyoxyalkylene additive may be selected from the group consisting of polyoxyalkylenes, any derivative thereof, salts thereof, and any combinations thereof. The particulate bicarbonate may be preferably functionalized by spray-coating, extrusion or co-grinding with at least one polyoxyalkylene additive. The functionalized particulate bicarbonate may comprise 50 wt % to less than 100 wt % of the bicarbonate component, and 0.02-50 wt % of the additive. The functionalized particulate bicarbonate may further comprise 0.1-5 wt % silica. A foamable polymer composition comprising such chemical blowing agent. A process for manufacturing a foamed polymer, such as foamed PVC, comprising shaping and heating the foamable polymer composition, and a foamed polymer obtained by such process. 1. A chemical blowing agent for foaming a thermoplastic polymer precursor ,said chemical blowing agent comprising a functionalized particulate bicarbonate,wherein said functionalized particulate bicarbonate contains at least one functionalization additive, andwherein said functionalization additive in the functionalized particulate bicarbonate comprises a polyoxyalkylene additive selected from the group consisting of polyoxyalkylenes, any derivatives thereof, salts thereof, and any combination of two or more thereof.2. The chemical blowing agent according to claim 1 , wherein the blowing agent does not contain any further blowing agent which is an exothermic blowing agent claim 1 , or wherein the chemical blowing agent does not contain a compound which liberates nitrogen gas during heating claim 1 , or wherein the chemical blowing agent does not contain a compound which liberates ...

SUPERABSORBENT POLYMER HAVING HIGH ABSORPTION RATE UNDER LOAD AND PREPARATION METHOD THEREOF

Provided are a superabsorbent polymer and a preparation method thereof. In the superabsorbent polymer according to the present invention, a low-temperature foaming agent are used together with a high-temperature foaming agent to control the size and distribution of internal pores of the superabsorbent polymer, thereby increasing absorption rate under load without reduction in gel strength. 1. A method of preparing a superabsorbent polymer comprising:1) polymerizing or crosslinking a monomer composition comprising acrylic acid-based monomers having acidic groups which are at least partially neutralized, in the presence of a polymerization initiator, a first crosslinking agent, a low-temperature foaming agent, and a high-temperature foaming agent at 25 to 100° C. to form a water-containing gel polymer,2) coarsely pulverizing the water-containing gel polymer,3) drying the coarsely pulverized water-containing gel polymer at 150° C. to 250° C.,4) pulverizing the dried polymer, and5) surface-modifying the pulverized polymer by a second crosslinking agent.2. The method of claim 1 , wherein a weight ratio of the low-temperature foaming agent and the high-temperature foaming agent is 50:1 to 2:1.3. The method of claim 1 , wherein the low-temperature foaming agent is sodium bicarbonate claim 1 , sodium carbonate claim 1 , potassium bicarbonate claim 1 , potassium carbonate claim 1 , calcium bicarbonate claim 1 , calcium carbonate claim 1 , magnesium bicarbonate claim 1 , or magnesium carbonate.41. The method of claim 1 , wherein the polymerization and crosslinking of step are performed at a temperature of 30° C. to 90° C.5. The method of claim 1 , wherein the high-temperature foaming agent is azodicarbonamide (ADCA) claim 1 , dinitroso pentamethylene tetramine (DPT) claim 1 , p claim 1 ,p′-oxybisbenzenesulfonylhydrazide (OBSH) claim 1 , p-toluenesulfonyl hydrazide (TSH) claim 1 , or sugar ester.6. The method of claim 5 , wherein the sugar ester is sucrose stearate claim 5 , ...

SHAPED PARTS MADE OF REINFORCED POLYURETHANE UREA ELASTOMERS AND USE THEREOF

The invention relates to foamed shaped parts provided with reinforcing materials and made from polyurethane urea elastomers, and to the use thereof. 15.-. (canceled)7. The molding as claimed in claim 6 , wherein the average fibers lengths of the carbon fibers (C) are from 90 to 200 μm.8. The molding as claimed in claim 6 , wherein the density of the molding is from 0.7 to 1.1 g/cm.9. The molding as claimed in claim 6 , wherein the flexural modulus of elasticity of the molding longitudinally with respect to the fiber direction is at least 600 MPa.10. An article comprising the moldings as claimed in claim 6 , wherein the article is an external bodywork part claim 6 , a bodywork element claim 6 , a flexible automobile bumper claim 6 , a wheel surround claim 6 , a doors claim 6 , a tailgate claim 6 , a front apron claim 6 , or a rear apron. The invention relates to foamed moldings made of polyurethane urea elastomers and provided with reinforcing materials, and to the use of said moldings.The production of polyurethane (PUR) urea elastomers via reaction of NCO semiprepolymers with mixtures of aromatic diamines and relatively high-molecular-weight compounds containing hydroxy or amino groups is known, and is described by way of example in EP-B 225 640. In order to achieve certain mechanical properties in the moldings produced from these materials it is necessary to add reinforcing materials to the reaction components, particular results here being improvement of the thermomechanical properties and a considerable increase in flexural modulus of elasticity. The use of these reinforcing materials markedly increases the viscosity of at least one reaction component (generally the polyol component), and this often leads to mixing problems and thus to processing problems which ultimately affect the component.It is desirable to find reinforced polyurethane urea elastomers which, during the production of sheet-like moldings, for example wheel surrounds, doors, or tailgates of ...

Method for producing a rigid polyurethane foam

The present invention relates to a process for the production of a rigid polyurethane foam or rigid polyisocyanurate foam, comprising the reaction of at least one polyisocyanate and of a polyol composition (PZ), where the polyol composition (PZ) comprises at least one compound having at least two hydrogen atoms reactive toward isocyanate groups and at least one compound (I) selected from the group consisting of dicarboxylic diesters of dicarboxylic acids having from 2 to 18 C atoms and tricarboxylic triesters of tricarboxylic acids having from 3 to 18 C atoms, where at least one blowing agent is used during the reaction. The present invention further relates to rigid polyurethane foams or rigid polyisocyanurate foams obtainable or obtained by such a process, and also to a polyol composition (PZ) at least comprising one compound having at least two hydrogen atoms reactive toward isocyanate groups and at least one compound (I) selected from the group consisting of dicarboxylic diesters of dicarboxylic acids having from 2 to 18 C atoms and tricarboxylic triesters of tricarboxylic acids having from 3 to 18 C atoms. The present invention also relates to the use of such a polyol composition (PZ) for the production of rigid polyurethane foams or rigid polyisocyanurate foams, and also to the use of a rigid polyurethane foam or rigid polyisocyanurate foam of the invention as, or for the production of, insulation materials, preferably insulation sheets, sandwich elements, hot-water tanks, boilers, coolers, insulation foams, refrigerators or freezers.

Methods of Processing Latex, Methods of Making Carpet, and Carpets

Methods are provided for processing a latex stream that include adding an isocyanate to a foam head that converts the latex stream to a foamed latex stream. A curing agent also may be added to the foam head. Also provided are methods of making a carpet that include disposing a foamed latex stream that includes an isocyanate onto a carpet fabric, or a support material to form a carpet backing. Carpets made by the methods herein also are provided. 1. A method of processing a latex stream , the method comprising:forwarding the latex stream to a reservoir of a foam head;disposing an isocyanate into the reservoir of the foam head to form a foamed latex stream comprising the isocyanate; andforwarding the foamed latex stream comprising the isocyanate from the reservoir of the foam head to a coating line.2. The method of claim 1 , further comprising disposing a curing agent into the reservoir of the foam head.3. The method of claim 2 , wherein the curing agent comprises ammonium acetate.4. The method of claim 2 , wherein the reservoir of the foam head comprises an inlet for the forwarding of the latex stream to the reservoir claim 2 , an inlet for disposing the isocyanate into the reservoir claim 2 , an inlet for disposing the curing agent into the reservoir claim 2 , and the inlet for disposing the curing agent into the reservoir is located at a position that is closer to the inlet for the forwarding of the latex stream to the reservoir than the inlet for disposing the isocyanate into the reservoir.5. The method of claim 1 , wherein the latex stream comprises particles of at least one type of latex solid and water.6. The method of claim 5 , wherein the particles of at least one type of latex solid comprise a natural rubber claim 5 , a carboxylated styrene butadiene copolymer claim 5 , or a combination thereof.7. The method of claim 5 , wherein the concentration of water in the latex stream is about 25 to about 33% claim 5 , by weight.8. The method of claim 5 , wherein the ...

Process for Producing Foam Beads Using a Modified Ethylene-Based Polymer

The present disclosure provides a process. The process includes (i) forming a composition containing a peroxide-modified ethylene-based polymer selected from the group consisting of a peroxide-modified ethylene/a-olefin multi-block copolymer, a peroxide-modified low density polyethylene, and combinations thereof; (ii) contacting the composition with a blowing agent to form a foam composition; and (iii) forming foam beads comprising the foam composition. The present disclosure also provides a foam bead produced by said process. 1. A process comprising:(i) forming a composition comprising a peroxide-modified ethylene-based polymer selected from the group consisting of a peroxide-modified ethylene/α-olefin multi-block copolymer, a peroxide-modified low density polyethylene, and combinations thereof;(ii) contacting the composition with a blowing agent to form a foam composition; and(iii) forming foam beads comprising the foam composition.2. The process of comprising contacting the composition with the blowing agent at a temperature of from 100° C. to 130° C.3. The process of wherein the blowing agent is a physical blowing agent.4. The process of comprising forming the composition solely from the peroxide-modified ethylene/α-olefin multi-block copolymer.5. The process of wherein the forming step comprises:melt blending the peroxide-modified ethylene/α-olefin multi-block copolymer with an ethylene/α-olefin multi-block copolymer.6. The process of wherein the forming step comprises:melt blending the peroxide-modified low density polyethylene withan ethylene/α-olefin multi-block copolymer.7. The process of wherein the composition has a melt strength from 9 cN to 30 cN.8. The process of wherein the foam beads have a foam density of less than 0.300 g/cc.9. A foam bead produced by the process of claim 1 , wherein the composition has (a) a melt strength from 9 cN to 30 cN and (b) a gel content of 0%; andthe foam bead has a foam density of less than 0.300 g/cc.10. A foam bead ...

EXPANDED BEADS, MOLDED FOAM, FIBER-REINFORCED COMPOSITE, AND AUTOMOTIVE COMPONENT

Expanded particles including a base resin including a copolymer of an aromatic vinyl compound, a (meth)acrylic acid ester, and an unsaturated dicarboxylic acid, in which the expanded particles have an average cell diameter of 5 to 50 μm and a standard deviation of the average cell diameter of less than 0.8. 1. Expanded particles comprising a base resin including a copolymer of an aromatic vinyl compound , a (meth)acrylic acid ester , and an unsaturated dicarboxylic acid , wherein said expanded particles have an average cell diameter of 5 to 50 μm and a standard deviation of the average cell diameter of less than 0.8.2. The expanded particles according to claim 1 , wherein said aromatic vinyl compound is selected from a styrene-based monomer claim 1 , said (meth)acrylic acid ester is selected from a (meth)acrylic acid alkyl ester (a carbon number of an alkyl group is 1 to 5) claim 1 , and said unsaturated dicarboxylic acid is selected from an aliphatic unsaturated dicarboxylic acid having 2 to 6 carbon atoms claim 1 , and when a total of units derived from three of said aromatic vinyl compound claim 1 , said (meth)acrylic acid ester claim 1 , and said unsaturated dicarboxylic acid is 100 parts by weight claim 1 , said copolymer comprises 30 to 80 parts by weight of the unit derived from said aromatic vinyl compound claim 1 , 8 to 35 parts by weight of the unit derived from said (meth)acrylic acid ester claim 1 , and 10 to 50 parts by weight of the unit derived from said unsaturated dicarboxylic acid.3. The expanded particles according to claim 1 , wherein said aromatic vinyl compound is selected from styrene claim 1 , α-methylstyrene claim 1 , vinyltoluene claim 1 , ethylstyrene claim 1 , i-propylstyrene claim 1 , t-butylstyrene claim 1 , dimethylstyrene claim 1 , bromostyrene claim 1 , chlorostyrene claim 1 , divinylbenzene claim 1 , trivinylbenzene claim 1 , divinyltoluene claim 1 , divinylxylene claim 1 , bis(vinylphenyl)methane claim 1 , bis(vinylphenyl)ethane ...

FOAMED POLYPROPYLENE COMPOSITION

The present invention is directed to a polypropylene composition (C) a melt flow rate MFR(230° C.) determined according to ISO 1133 in the range of 15 to 40 g/ 10 min, the use of said polypropylene composition (C) for the production of a foamed article and a foamed article comprising said polypropylene composition (C). 115-. (canceled)16. A polypropylene composition (C) having a melt flow rate MFR(230° C.) determined according to ISO 1133 in the range of 15 to 40 g/10 min , comprising{'sub': '2', 'claim-text': i) a first matrix being a first propylene polymer (M1) and', 'ii) a first elastomeric propylene copolymer (E1) dispersed in said first matrix,, 'a) a first heterophasic propylene copolymer (HECO1) having a melt flow rate MFR(230° C.) determined according to ISO 1133 in the range of 50 to 200 g/10 min, said first heterophasic propylene copolymer comprising'}{'sub': '2', 'claim-text': iii) a second matrix, which is a second propylene polymer (M2) and', 'iv) a second elastomeric propylene copolymer (E2) dispersed in said second matrix,, 'b) a second heterophasic propylene copolymer (HECO2) having a melt flow rate MFR(230° C.) determined according to ISO 1133 in the range of 3 to <50 g/10 min, said second heterophasic propylene copolymer comprising'}{'sub': '2', 'c) a high density polyethylene (HDPE) having a melt flow rate MFR(190° C.) determined according to ISO 1133 in the range of 2 to 15 g/10 min,'}{'sub': 4', '8', '2, 'd) a plastomer (PL), which is a copolymer of ethylene and a Cto Cα-olefin and having a melt flow rate MFR(190° C.) determined according to ISO 1133 in the range of 10 to 70 g/10 min,'}e) an inorganic filler (F),f) a foaming agent (FA) comprising citric acid in combination with a bicarbonate, andg) optionally, a nucleating agent.17. The polypropylene composition (C) according to claim 16 , wherein the composition comprisesa) 35.0 to 55.0 wt.-% of the first heterophasic propylene copolymer (HECO1),b) ≥20.0 wt.-% of the second heterophasic ...

BIODEGRADABLE FOAMS

A composite material includes a polymer matrix with a polymer having D-glucosamine monomer units and 50% or fewer N-acetyl-D-glucosamine monomer units. A salt can be disposed in the polymer matrix. A dispersed phase is disposed in the polymer matrix with the salt, and the dispersed phase and the polymer matrix form a porous composite foam. The porous composite foam includes, by weight, 0.5-3 times the dispersed phase to the polymer matrix, and the porous composite foam has a density of less than 1 g/cm. 1. An composite material , comprising:a polymer matrix including chitosan; and{'sup': '3', 'a dispersed phase disposed in the polymer matrix, wherein the dispersed phase, and the polymer matrix form a porous composite foam, wherein the porous composite foam includes, by weight, 0.5-2.5 times the dispersed phase to the polymer matrix, and wherein the porous composite foam has a density of less than 1 g/cm.'}2. The composite material of claim 1 , further comprising a coating disposed on the exterior of the porous composite foam claim 1 , wherein the coating is substantially non-porous and includes chitosan.3. The composite material of claim 2 , wherein the coating encapsulates the porous composite foam to prevent water ingression into the porous composite foam claim 2 , and wherein the polymer matrix includes 90% or more chitosan.4. The composite material of claim 1 , wherein loads imparted on the porous composite foam are transferred claim 1 , at least in part claim 1 , from the polymer matrix to the dispersed phase.5. The composite material of claim 1 , further comprising a plasticizer disposed in the polymer matrix to impart a flexible character to the porous composite foam.6. The composite material of claim 5 , wherein the plasticizer includes a polyol.7. The composite material of claim 1 , wherein the composite foam includes at least one of a sodium or calcium salt.8. The composite material of claim 1 , wherein the dispersed phase includes at least one of chitin ...

Ethylene-propylene-diene rubber foamed material and sealing material

An ethylene-propylene-diene rubber foamed material is obtained by foaming a rubber composition containing an ethylene-propylene-diene rubber and a thermoplastic resin having a melting point of 60 to 140° C. The thermoplastic resin content with respect to 100 parts by mass of the ethylene-propylene-diene rubber is 5 to 50 parts by mass and the ethylene-propylene-diene rubber includes an ethylene-propylene-diene rubber having a diene amount of 4.0 mass % or more.

THERMALLY EXPANDABLE COMPOSITIONS

The present invention relates to a thermally expandable composition comprising at least one peroxidically crosslinking polymer which does not contain glycidyl (meth) acrylate as a monomer in copolymerized form; at least one polymer, which is polymerized with glycidyl (meth) acrylate as a monomer present in a proportion of from 2 to 20% by weight, based on the respective polymer; at least one peroxide; and at least one endothermic chemical propellant, moldings containing this composition, and a method for sealing and filling cavities in components, for reinforcing or stiffening components, in particular hollow components, and for bonding movable components using such molded bodies. 1. A thermally expandable composition , containinga) at least one peroxidically crosslinking polymer that does not contain glycidyl (meth)acrylate as a monomer in copolymerized form,b) at least one polymer that contains glycidyl (meth)acrylate as a monomer in copolymerized form in a proportion from 2 to 20 wt % with respect to the respective polymer,c) at least one peroxide, andd) at least one endothermic chemical propellant.2. The thermally expandable composition as set forth in claim 1 , wherein the at least one peroxidically crosslinking polymer a) is selected from among ethylene vinyl acetate copolymers claim 1 , functionalized ethylene vinyl acetate copolymers claim 1 , functionalized ethylene butyl acrylate copolymers claim 1 , ethylene propylene diene copolymers claim 1 , styrene butadiene block copolymers claim 1 , styrene isoprene block copolymers claim 1 , ethylene methyl acrylate copolymers claim 1 , ethylene ethyl acrylate copolymers claim 1 , ethylene butyl acrylate copolymers claim 1 , ethylene (meth)acrylic acid copolymers and mixtures thereof.3. The thermally expandable composition as set forth in claim 2 , wherein the at least one peroxidically crosslinking polymer a) is selected from among ethylene vinyl acetate copolymers and functionalized ethylene vinyl acetate ...

THERMALLY EXPANDABLE COMPOSITIONS COMPRISING POLYSACCHARIDE

The present application relates to a thermally expandable composition containing at least one peroxide cross-linking polymer, at least one peroxide, at least one polysaccharide and at least one endothermic, chemical blowing agent; as well as to shaped bodies containing said composition and to a method for sealing and filling voids in components, for strengthening or reinforcing components, in particular hollow components, and for bonding mobile components using shaped bodies of this type. 1. A thermally expandable composition comprising:a. at least one peroxidically crosslinked polymer;b. at least one peroxide;c. at least one polysaccharide; andd. at least one endothermic chemical blowing agent.2. The thermally expandable composition according to claim 1 , wherein the at least one peroxidically crosslinkable polymer a) is selected from styrene-butadiene block copolymers claim 1 , styrene-isoprene block copolymers claim 1 , ethylene-vinyl acetate copolymers claim 1 , functionalized ethylene-vinyl acetate copolymers claim 1 , functionalized ethylene-butyl acrylate copolymers claim 1 , ethylene-propylene-diene copolymers claim 1 , ethylene-methyl acrylate copolymers claim 1 , ethylene-ethyl acrylate copolymers claim 1 , ethylene-butyl acrylate copolymers claim 1 , ethylene-(meth)acrylic acid copolymers claim 1 , ethylene-2-ethylhexyl acrylate copolymers claim 1 , ethylene-acryl ester copolymers and polyolefins.3. The thermally expandable composition according to claim 2 , wherein the at least one peroxidically crosslinked polymer a) is a copolymer selected from ethylene-vinyl acetate copolymers and functionalized ethylene-vinyl acetate copolymers.4. The thermally expandable composition according to claim 1 , wherein the at least one polysaccharide is a starch and/or a cellulose.5. The thermally expandable composition according to claim 4 , wherein the at least one polysaccharide is a starch.6. The thermally expandable composition according to claim 5 , wherein the ...

THERMALLY EXPANDABLE COMPOSITIONS COMPRISING UREA DERIVATIVES

The present application relates to a thermally expandable composition containing at least one peroxide cross-linking polymer, at least one peroxide and at least one endothermic, chemical blowing agent, the blowing agent comprising at least one solid, optionally functionalized, polycarboxylic acid or the salt thereof and at least one urea derivative according to the formula (I) as defined herein; as well as shaped bodies containing the composition and to a method for sealing and filling voids in components, for strengthening or reinforcing components, in particular hollow components, and for bonding mobile components using shaped bodies of this type. 1. A thermally expandable composition , comprising:a) at least one peroxidically cross-linking polymer;b) at least one peroxide; and {'br': None, 'sub': 1', '2', '3, 'R—NH—C(═X)—NRR\u2003\u2003(I)'}, 'c) at least one endothermic chemical blowing agent comprising at least one carboxylic acid or salt thereof, and at least one urea derivative of formula (I)'}wherein X denotes O or S; and{'sub': 1', '2', '3', '4', '4, 'R, Rand Rindependently denote H, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl or —C(O)—R, where Rdenotes H or substituted or unsubstituted alkyl.'}2. The thermally expandable composition according to claim 1 , wherein the at least one peroxidically cross-linking polymer a) is selected from styrene-butadiene block copolymers claim 1 , styrene-isoprene block copolymers claim 1 , ethylene-vinyl acetate copolymers claim 1 , functionalized ethylene-vinyl acetate copolymers claim 1 , functionalized ethylene-butyl acrylate copolymers claim 1 , ethylene-propylene-diene copolymers claim 1 , ethylene-methyl acrylate copolymers claim 1 , ethylene-ethyl acrylate copolymers claim 1 , ethylene-butyl acrylate copolymers claim 1 , ethylene-(meth)acrylic acid copolymers claim 1 , ethylene-2-ethylhexyl acrylate copolymers ...

PROCESS FOR PREPARING BIOCOMPATIBLE AND BIODEGRADABLE POROUS THREE-DIMENSIONAL POLYMER MATRICES AND USES THEREOF

The present invention relates to a process for preparing a biocompatible and biodegradable, porous three-dimensional polymer matrix, to the porous polymer matrix obtained by means of such a process, and also to the uses thereof, in particular as a support and for cell culture or in regenerative medicine, and in particular for cell therapy, in particular cardiac cell therapy. 1. Process for preparing a biocompatible and biodegradable polymer matrix comprising a network of open and interconnected pores , said process comprising at least the following steps:1) preparing an aqueous solution comprising at least one biocompatible anionic polysaccharide and at least one biocompatible cationic polymer,2) mechanically stirring said solution obtained above in the preceding step, in the presence of a foaming agent or of a pressurized gas, so as to form a foam,3) freezing the foam obtained above in the preceding step, so as to obtain a frozen foam,4) gelling the frozen foam obtained above in the preceding step, by adding, to said foam, at least one gelling agent in solution in a solvent, so as to obtain a gelled foam,5) dehydrating the gelled foam obtained above in the preceding step, so as to obtain a dehydrated gelled foam, then{'sub': '2', '6) drying the dehydrated gelled foam obtained above in the preceding step, by treatment with supercritical CO, so as to obtain said polymer matrix.'}2. Process according to claim 1 , wherein the biocompatible anionic polysaccharide(s) have an average molecular weight (MwA) of greater than or equal to 75 000 Daltons.3. Process according to claim 1 , wherein the biocompatible anionic polysaccharide(s) are chosen from alginates and modified alginates.4. Process according to claim 1 , wherein the amount of anionic polysaccharides present in the aqueous solution of step 1) ranges from 0.5% to 8% by weight relative to the total weight of said aqueous solution.5. Process according to claim 1 , wherein the biocompatible cationic polymer(s) have ...

Heat expandable foam

A composition for an expandable sealant including at least one polymeric material selected from the group consisting of low density polyethylenes (LDPE), linear low density polyethylenes (LLPDE), ethylene vinyl acetate (EVA), ethylene methacrylate (EMA), and ethylene-butyl acrylate (EnBA); and a chemical blowing agent, wherein the composition is substantially free of a cross-linking agent.

MODIFIED SILICONE RESIN FOAMED BODY

An object of the present invention is to provide a modified silicone resin foam that can be foamed without generating hydrogen as a by-product, while maintaining excellent texture and flexibility. The present invention provides a modified silicone resin foam obtained by curing a foamable liquid resin composition, the foamable liquid resin composition containing 100 parts by weight of a base resin, 0.1 to 5 parts by weight of a silanol condensation catalyst, and 2 to 40 parts by weight of a chemical foaming agent, the base resin including a polymer having in its molecular chain at least one silyl group that contains a hydrolyzable group bonded to a silicon atom and can be crosslinked by forming a siloxane bond, the polymer having a backbone composed of oxyalkylene units, the foam having an ASKER FP hardness of 60 or less in a 25° C. atmosphere. 1. A modified silicone resin foam , obtained by curing a foamable liquid resin composition , the foamable liquid resin composition comprising:100 parts by weight of a base resin;0.1 to 5 parts by weight of a silanol condensation catalyst; and2 to 40 parts by weight of a chemical foaming agent,the base resin comprising a polymer having in its molecular chain at least one silyl group that contains a hydrolyzable group bonded to a silicon atom and can be crosslinked by forming a siloxane bond, the polymer having a backbone composed of oxyalkylene units,the foam having an ASKER FP hardness of 60 or less in a 25° C. atmosphere.2. The modified silicone resin foam according to claim 1 ,wherein the backbone of the polymer is composed of oxypropylene repeating units.3. The modified silicone resin foam according to claim 1 ,wherein the polymer has a number average molecular weight of at least 3000 but not more than 100000.4. The modified silicone resin foam according to claim 1 ,wherein the silanol condensation catalyst is an acidic organophosphate.5. The modified silicone resin foam according to claim 1 ,{'sub': m', '2m+1', 'n', '3-n, ...

FOAMED THERMOPLASTIC MATERIAL, METHOD FOR THE MANUFACTURE THEREOF, ARTICLES PREPARED THEREFROM, AND ARTICLE-FORMING METHOD

A foamed thermoplastic material includes a thermoplastic material exhibiting, in its unfoamed state, a particular flammability index, flame growth rate, and specific extinction area. The foamed thermoplastic material further includes a plurality of cells having a number average mean diameter of 5 to 150 micrometers present in an amount effective to provide the foamed thermoplastic material with a density that is 10 to 90 percent of the density of the unfoamed thermoplastic material. The foamed thermoplastic material exhibits a desirable tensile elongation and dielectric constant. A process for forming the foamed thermoplastic material, articles including the foamed thermoplastic material, and an article-forming process are also described. 1. A foamed thermoplastic material comprising: [ a flammability index of 0.1 to 15, determined according to ASTM D7309 Method A at a heating rate of 1° C. per second under nitrogen from 25 to 750° C.;', {'sup': '2', 'a flame growth rate of 0.1 to 1.5 kW/ms, determined according to ASTM E1354 or ISO 5660 using an applied heat flux of 35 kilowatt per square meter;'}, 'a specific extinction area of 300 to 1200 square meters per kilogram, determined according to ASTM E1354 or ISO 5660 using an applied heat flux of 35 kilowatt per square meter;', 'a tensile elongation of greater than 100%, measured according to UL 1581 at a temperature of 23° C., using a coated wire test sample; and', 'a dielectric constant of 2 to 4, determined according to ASTM D150-11 at 1 MHz; and, 'in its unfoamed state,'}, a tensile elongation of 100 to 500%, measured according to UL 1581 at a temperature of 23° C., using a coated wire test sample; and', 'a dielectric constant of 1.4 to 4, determined according to ASTM D150-11 at 1 MHz; and, 'in its foamed state,'}], 'a thermoplastic material exhibiting,'}a plurality of cells having a number average mean diameter of 5 to 150 micrometers;wherein the cells are present in an amount effective to provide the foamed ...

FUNCTIONALIZED PARTICULATE BICARBONATE AS BLOWING AGENT, FOAMABLE POLYMER COMPOSITON CONTAINING IT, AND ITS USE IN MANUFACTURING A THERMOPLASTIC FOAMED POLYMER

A chemical blowing agent for foaming a thermoplastic polymer, for example PVC plastisol or a polymer resin in an extrusion process, comprising a functionalized particulate bicarbonate containing at least one additive, preferably excluding an exothermic blowing agent. The additive may be selected from the group consisting of polymers; inorganic salts; oils; fats; resin acids, any derivative thereof, and salts thereof; amino acids; fatty acids; carboxylic or polycarboxylic acids, soaps; waxes; derivatives thereof; salts thereof; or any combinations thereof. The particulate bicarbonate may be functionalized by spray-drying, coating, extrusion or co-grinding with at least one additive. The functionalized particulate bicarbonate may comprise 50 wt % to less than 100 wt % of the bicarbonate component, and 0.02-50 wt % of the additive. A foamable polymer composition comprising such chemical blowing agent. A process for manufacturing a foamed polymer, such as foamed PVC, comprising shaping and heating the foamable polymer composition, and a foamed polymer obtained by such process. 1. A chemical blowing agent for foaming a thermoplastic polymer precursor ,said chemical blowing agent comprising a functionalized particulate bicarbonate,wherein said functionalized particulate bicarbonate contains at least one additive, andwherein said additive in the functionalized particulate bicarbonate is at least one following compound:one or more polymers;one or more amino acids, any derivative thereof, and salts thereof;one or more inorganic salts;one or more oils;one or more fats;one or more resin acids, any derivative thereof, and salts thereof;one or more fatty acids, any derivative thereof, and salts thereof;a carboxylic or polycarboxylic acid, derivative thereof (such as esters), or salts thereof;one or more soaps;one or more waxes; orany combinations thereof.2. The chemical blowing agent according to claim 1 , wherein the blowing agent does not contain any further blowing agent ...

RESIN COMPOSITION FOR FOAM, FOAM, AND PRODUCTION METHOD OF FOAM

Provided is a resin composition for a foam that may include a base resin having a reactive silicon group (A), a chemical foaming agent (B), and a silanol condensation catalyst (D), wherein the chemical foaming agent (B) comprises a dicarbonate diester (B-1). Further provided is a method for producing a foam, that may include: a mixing step of mixing a liquid, which may include a base resin having a reactive silicon group (A) and a dicarbonate diester (B-1), with a silanol condensation catalyst (D) to obtain a mixed liquid, wherein in the mixed liquid, a rate of foaming effected by decomposition of the dicarbonate diester (B-1), and a rate of a curing reaction of the mixed liquid effected by a reaction between the reactive silicon groups may each be adjusted, such that a foam having an expansion ratio of 2-fold or more and 60-fold or less is obtained. 1. A resin composition for a foam comprising:a base resin having a reactive silicon group (A),a chemical foaming agent (B), anda silanol condensation catalyst (D),wherein the chemical foaming agent (B) comprises a dicarbonate diester (B-1).2. The resin composition for a foam according to claim 1 , wherein the base resin (A) comprises an acrylic resin claim 1 , a polyoxyalkylene-based polymer claim 1 , or an acrylic resin and a polyoxyalkylene-based polymer.4. The resin composition for a foam according to claim 1 , wherein the silanol condensation catalyst (D) is a neutral or weakly acidic catalyst.5. The resin composition for a foam according to claim 4 , wherein the silanol condensation catalyst (D) comprises a tin-containing catalyst.7. The resin composition for a foam according to claim 1 , wherein a content of the dicarbonate diester (B-1) is 1 part by weight or more and 50 parts by weight or less with respect to 100 parts by weight of the base resin (A).8. A foam formed by expanding and curing the resin composition for a foam according to .9. A method for producing a foam claim 1 , comprising:mixing a liquid, which ...

Additive compositions for low loss wire and cable dielectric and products obtained thereby

There are disclosed additive compositions for polymer base materials, which additive compositions are comprised of blowing agent (direct gas or chemical blowing agent), thermoplastic polymer carrier for the chemical blowing agent and filler, wherein the thermoplastic polymer carrier has a melting point below the decomposition temperature of the chemical blowing agent. The additive compositions improve the dielectric properties of a foamed material and find particular application as additives for coverings for metallic or non-metallic conductive wire or cable composites. The chemical blowing agent for the additive can be selected from those based on hydrazine, hydrazide, or azodicarbonamide, or those based on combinations of sodium citrate/citric acid and sodium bicarbonate. The filler for the additive can be selected from calcium carbonate, zeolites, clay and other known fillers. The polymer base material for the additive can be, e.g., polyethylene, polypropylene, polybutylene, poly (p-phenylene oxide), polystyrene and combinations thereof.

Composition based on vegetable tannins, free from formaldehyde and low-boiling organic solvents, for manufacturing a foam material, and process thereof

A composition for manufacturing a foam material includes flavonoid tannins, mainly of the prorobineditinidin and/or profisetinidin type, according to an amount generally in the range between 40% and 50% by weight of the composition, furfuryl alcohol according to an amount greater than 15% by weight of the composition, and an acid catalyst. The composition contains an amount of water not greater than 15% by weight of the composition, and includes a substance adapted to release a gas having the function of a foaming agent, such as an isocyanate, according to an amount not greater than 10% by weight of the STD SF composition, preferably less than 1% by weight, the composition being totally free from formaldehyde and of low-boiling organic solvents.

Foamable polyamide composition and foam obtained therefrom

Provided is a foamable polyamide composition comprising a) at least one polyamide comprising at least one carboxylic group; b) at least one thermoplastic rubber; and c) at least one compound having at least one isocyanate group; and optionally d) at least one filler and e) at least one additive. 1. A composition comprising:a) 21.0 to 99.6 wt % of at least one polyamide comprising at least one carboxylic group;b) 0.3 to 9.0 wt % of at least one thermoplastic rubber;c) 0.1 to 3.0 wt % of at least one compound having at least one isocyanate group;d) 0 to 65.0 wt % of at least one filler; ande) 0 to 2.0 wt % of at least one additive;wherein the sum of wt % of the components a) to e) is 100 wt %.2. The composition according to claim 1 , wherein the at least one polyamide is selected from the group consisting of polyamide 6 claim 1 , polyamide 6 claim 1 ,6 claim 1 , and mixtures and co-polyam ides thereof.3. The composition according to claim 1 , wherein the at least one thermoplastic rubber comprises styrenic thermoplastic elastomer claim 1 , preferably selected from the group consisting of styrene-ethylene/butylene-styrene claim 1 , styrene-ethylene/propylene-styrene (SEPS) claim 1 , styrene-ethylene/ethylene/propylene-styrene (SEEPS) claim 1 , and any a combinations thereof.4. The composition according to claim 1 , wherein the at least one thermoplastic rubber comprises ethylene propylene diene rubber claim 1 , ethylene propylene rubber claim 1 , or any a combinations thereof.5. The composition according to claim 1 , wherein the at least one compound having at least one isocyanate group comprises an oligomeric polyisocyanate.6. The composition according to claim 5 , wherein the oligomeric polyisocyanate is a diisocyanate or a triisocyanate.7. The composition according to claim 6 , wherein the polyisocyanate is hexamethylene diisocyanate trimer or isophorone diisocyanate trimer.8. The composition according to claim 1 , wherein the at least one filler is selected from ...

BLOWING AGENT

The present invention relates to a new composition comprising 4,4′-oxybis(benzenesulfonylhydrazide) (OBSH) and sodium hydrogen carbonate (SBC), a process for the manufacturing thereof, and its use as blowing agent for the manufacturing of expanded thermoplastic materials and rubber compounds. 1. A composition comprising:a) 5 to 50% by weight or 4,4′-oxybis(benzenesulfonylhydrazide); andb) 95 to 50% by weight of sodium hydrogen carbonate,whereby the sum of components a) and b) adds up to 100%.2. The composition according to claim 1 , comprising:a) 10 to 40% by weight of 4,4′-oxybis(benzenesulfonylhydrazide); andb) 90 to 60% by weight of sodium hydrogen carbonate,whereby the sum of components a) and b) adds up to 100%.3. The composition according to claim 1 , wherein:the 4,4′-oxybis(benzenesulfonylhydrazide) comprises 4,4′-oxybis(benzenesulfonylhydrazide) particles with a mean particle size D50 of 1 to 15 micron, preferred 4 to 13 micron, very preferred 6 to 10 micron; andthe sodium hydrogen carbonate comprises sodium hydrogen carbonate particles with a mean particle size D50 of 1 to 15 micron, preferred 2 to 10 micron, very preferred 3 to 6 micron.4. The composition according to claim 1 , wherein:the 4,4′-oxybis(benzenesulfonylhydrazide) comprises 4,4′-oxybis(benzenesulfonylhydrazide) particles having a mean particle size D50 of 1 to 15 micron, preferred 4 to 13 micron, very preferred 6 to 10 micron, and a particle size distribution D10 of 0.1 to 3 micron, preferred 0.5 to 2 micron and very preferred 1 to 1.5 micron, and a D90 of 3 to 40 micron, preferred 5 to 30 micron and very preferred 15 to 25 micron, andthe sodium hydrogen carbonate comprises sodium hydrogen carbonate particles with a mean particle size D50 of 1 to 15 micron, preferred 2 to 10 micron, very preferred 3 to 6 micron, and a particle size distribution D10 of 0.1 to 3 micron, preferred 0.5 to 2 micron, and very preferred 0.7 to 1.2 micron, and a D90 of 3 to 40 micron, preferred 5 to 30 micron and very ...

PVC COMPOSITE MATERIAL, FOAM BOARD, PRODUCTION METHOD AND APPARATUS THEREOF, AND FLOORING

The present invention provides a polyvinyl chloride polymer (PVC) composite material including 40-60 parts by weight of PVC, 40-60 parts by weight of light calcium carbonate, 0.8-1.2 parts by weight of composite foaming agent including an inorganic foaming agent and an organic foaming agent, 3-5 parts by weight of foam regulator, 2-4 parts by weight of toughener, 0.8-1.2 parts by weight of lubricant, and 1.5-2.5 parts by weight of stabilizer. The ratio of the inorganic foaming agent to the organic foaming agent by weight in the composite foaming agent is 1/2-1. Meanwhile, the present invention provides a foam board made of the PVC composite material, an associated production method, an apparatus, and flooring. The resulting PVC products have a high-strength structure and a good foaming property, thus having a satisfied mute effect. 1. A polyvinyl chloride polymer composite material , comprising:40-60 parts by weight of polyvinyl chloride polymer;40-60 parts by weight of calcium carbonate;0.8-1.2 parts by weight of composite foaming agent comprising an inorganic foaming agent and an organic foaming agent;3-5 parts by weight of foam regulator;2-4 parts by weight of toughener;0.8-1.2 parts by weight of lubricant; and1.5-2.5 parts by weight of stabilizer,wherein the ratio of the inorganic foaming agent to the organic foaming agent by weight in the composite foaming agent is 1/2-1.2. The polyvinyl chloride polymer composite material according to claim 1 , wherein the polyvinyl chloride polymer composite material comprises:45-55 parts by weight of polyvinyl chloride polymer;45-55 parts by weight of light calcium carbonate;0.9-1.1 parts by weight of composite foaming agent;3.5-4.5 parts by weight of foam regulator;2.5-3.5 parts by weight of toughener;0.9-1.1 parts by weight of lubricant; and1.8-2.2 parts by weight of stabilizer.3. The polyvinyl chloride polymer composite material according to claim 1 , wherein the PVC composite material comprises:50-60 parts by weight of ...

COMPOSITION FOR SPONGE RUBBER, SPONGE RUBBER MOLDED PRODUCT, AND METHOD FOR PRODUCING THE SAME

The present invention provides a composition for sponge rubber including 2 to 6 parts by mass of polyethylene, 0.5 to 12 parts by mass of baking soda as a foaming agent, and a sulfur vulcanizing agent with respect to 100 parts by mass of an ethylene-αolefin-nonconjugated diene copolymer. 1. A composition for sponge rubber comprising 2 to 6 parts by mass of polyethylene , 0.5 to 12 parts by mass of baking soda as a foaming agent , and a sulfur vulcanizing agent with respect to 100 parts by mass of an ethylene-αolefin-nonconjugated diene copolymer.2. The composition for sponge rubber according to claim 1 , wherein the polyethylene is high-pressure low-density polyethylene claim 1 , linear low-density polyethylene claim 1 , or a mixture thereof.3. The composition for sponge rubber according to claim 1 , further comprising 12 parts by mass or more of a process oil as a plasticizer with respect to 100 parts by mass of the ethylene-αolefin-nonconjugated diene copolymer.4. A sponge rubber molded product that is produced by foam molding from the composition for sponge rubber as claimed in .5. The sponge rubber molded product according to claim 4 , wherein the sponge rubber molded product is a sealing part or an end-connection part of a weather strip.6. The sponge rubber molded product according to claim 5 , wherein the sealing part or the end-connection part include an insert made of resin or an insert made of metal.7. A method for producing a sponge rubber molded product claim 1 , the method comprising foam molding the composition for sponge rubber as claimed in in a mold at a temperature of 190° C. to 220° C. The present invention relates to a composition for sponge rubber and a sponge rubber molded product.Sponge rubber is widely used for, for example, sealing parts and end-connection parts of weather strips attached on automobile bodies, sealing materials on house door opening and closing parts, and universal buffer materials. As a rubber polymer of the sponge rubber, ...

METHOD FOR PREPARING SUPERABSORBENT POLYMER

The preparation method of superabsorbent polymer according to the present invention can increase suction power without degradation of other properties of superabsorbent polymer, and thus, the prepared superabsorbent polymer may be usefully used as material of hygienic goods such as a diaper. 1. A method for preparing superabsorbent polymer comprising the steps of1) polymerizing and cross-linking a monomer composition comprising a water-soluble ethylene-based unsaturated monomer, a polymerization initiator, a first cross-linking agent and a blowing agent to form a hydrous gel phase polymer,2) drying the hydrous gel phase polymer,3) grinding the dried polymer, and4) carrying out a surface cross-linking reaction by reacting the ground polymer at 180 to 250° C. for 50 minutes or more in the presence of a second cross-linking agent.2. The method for preparing superabsorbent polymer according to claim 1 , wherein the water-soluble ethylene-based unsaturated monomer is a compound represented by the following Chemical Formula 1 claim 1 ,{'br': None, 'sub': '1', 'sup': '1', 'R—COOM\u2003\u2003[Chemical Formula 1]'}in the Chemical Formula 1,{'sub': 1', '2-5, 'Ris a Calkyl group comprising an unsaturated bond,'}{'sup': '1', 'Mis a hydrogen atom, a monovalent or divalent metal, an ammonium group, or an organic amine salt.'}3. The method for preparing superabsorbent polymer according to claim 1 , wherein the first cross-linking agent is one or more selected from the group consisting of N claim 1 ,N′-methylenebisacrylamide claim 1 , trimethylolpropane tri(meth)acrylate claim 1 , ethyleneglycol di(meth)acrylate claim 1 , polyethyleneglycol (meth)acrylate claim 1 , propyleneglycol di(meth)acrylate claim 1 , polypropyleneglycol (meth)acrylate claim 1 , butanediol di(meth)acrylate claim 1 , butyleneglycol di(meth)acrylate claim 1 , diethyleneglycol di(meth)acrylate claim 1 , hexanediol di(meth)acrylate claim 1 , triethyleneglycol hexanediol di(meth)acrylate claim 1 , ...

Skin-Foam-Substrate Structure Via Induction Heating

A method of forming a skin-foam-substrate type structure particular suitable as an automobile trim component. The method comprises supplying a polymer resin containing a chemical foaming agent and including metal particles capable of inductive heating, that is positioned between a polymeric skin and substrate, followed by inductive heating to cause foaming of the polymeric resin. The foamed polymer resin adheres to the skin and substrate.

MANUFACTURING PROCESS AND COMPOSITION FOR FOAMED PVC-P ROCK SHIELDS

A plasticized PVC formulation for foam extrusion including polyvinyl chloride, at least one plasticizer, at least one nucleating agent and a chemical blowing agent, wherein the plasticized PVC formulation is a dry blend containing 0.5 to 5% by weight of one or more nucleating agents and 0.1 to 3% by weight of the chemical blowing agent, wherein the blowing agent is sodium bicarbonate and the nucleating agent is talcum, and a foam extrusion method using said formulation. The extruded plasticized PVC foam is particularly suitable for rock shield pads used for pipeline protection. The foams are lightweight and require less consumption of materials with comparable properties to corresponding solid articles. 1. A non-woven mat consisting of a plurality of foamed PVC strands that are extruded from a melted plasticized PVC formulation and then fused together , each of the plurality of strands consisting of the plasticized PVC formulation.2. The non-woven mat according to claim 1 , wherein the plasticized PVC formulation comprises from 20 to 70 weight percent PVC.3. The non-woven mat according to claim 1 , wherein the plasticized PVC formulation comprises from 30 to 60 weight percent PVC.4. The non-woven mat according to claim 1 , wherein the plasticized PVC formulation comprises from 40 to 51 weight percent PVC.5. The non-woven mat according to claim 2 , wherein the plasticized PVC formulation further comprises from 15 to 45 percent by weight of plasticizer.6. The non-woven mat according to claim 2 , wherein the plasticized PVC formulation further comprises from 20 to 40 percent by weight of plasticizer.7. The non-woven mat according to claim 2 , wherein the plasticized PVC formulation further comprises from 26 to 31 percent by weight of plasticizer.8. The non-woven mat according to claim 5 , wherein the plasticized PVC formulation further comprises a blowing agent.9. The non-woven mat according to claim 8 , wherein the plasticized PVC formulation further comprises a ...

PROCESSING AIDS FOR USE IN MANUFACTURE EXTRUDED POLYSTYRENE FOAMS USING LOW GLOBAL WARMING POTENTIAL BLOWING AGENTS

A foamable polymeric mixture is provided that includes a polymer composition and at least one blowing agent. The blowing agent may comprise any blowing agents known not to deplete the ozone or increase the prevalence of global warming, such as CO, HFO, HFC and mixtures thereof. The foamable polymeric mixture may further includes at least one processing aid comprising an organic phase changing material. The inventive foamable mixture is capable of processing at a pressure range of 800 to 1200 psi (5.5 to 8.3 MPa). 1. A foamed insulation product comprising: polystyrene;', 'a blowing agent composition, and', 'from 0.05 to 3 wt. % of an organic phase changing material comprising synthetic beeswax;, 'a polymeric foam composition comprisingwherein the foamed insulation product has an insulation R-value per inch of between 4 and 7.2. The foamed insulation product of claim 1 , wherein the blowing agent composition comprises one or more of carbon dioxide claim 1 , hydrofluoroolefins claim 1 , and hydrofluorocarbons.3. The foamed insulation product of claim 2 , wherein the blowing agent composition comprises hydrofluoroolefins and hydrofluorocarbons.4. The foamed insulation product of claim 1 , wherein the organic phase changing material is micro encapsulated.5. The foamed insulation product of claim 4 , wherein the organic phase changing material is microencapsulated by a polymer material comprising one or more of melamine formaldehyde claim 4 , urea formaldehyde claim 4 , and acrylate copolymer resins.6. The foamed insulation product of claim 1 , further comprising at least one infrared attenuating agent.7. The foamed insulation product of claim 1 , wherein the foamed insulation product is monomodal.8. The foamed insulation product of claim 1 , wherein the foamed insulation product has a density of from 1 to 5 lbs/ft.9. The foamed insulation product of claim 1 , wherein the foamed insulation product has a compressive strength between 6 and 80 psi.10. The foamed insulation ...

Formulation of polymeric mixtures for the production of cross-linked expanded PVC foams and process for producing said foams

A formulation of polymeric mixtures for the production of cross-linked expanded PVC foams, of the type comprising PVC, isocyanates, anhydrides and one or more nucleating agents, wherein the nucleating agents are composed of nucleating materials having a porosity of 1-100 nm, preferably 2-50 nm. With respect to known formulations for the production of cross-linked PVC foams, a formulation according to the invention offers the advantage of obtaining the desired degrees of stabilization, nucleation and expansion, even without the use of diazocompounds. 1. A formulation of polymeric mixtures for production of cross-linked expanded PVC foams , comprising:PVC, isocyanates, anhydrides and one or more nucleating agents,wherein said anhydrides are liquid at room temperature;wherein said nucleating agents consist of porous nucleating materials; andwherein diazocompounds are absent.2. The formulation according to claim 1 , wherein a porosity of said one or more nucleating agents is 1-100 nm.3. The formulation according to claim 2 , wherein said one or more nucleating agents comprise a nucleating agent consisting of a porous zeolite claim 2 , composed of aluminosilicates having a formulation:{'br': None, 'i': x', 'y', '.z, 'sub': 2', '2', '3, 'MO.SiOAlO'}wherein:×=0-0.5;y=0-0.5;z=0.5-1; and{'sub': '4', 'M=Na, K, Ca, NH, Fe.'}4. The formulation according to claim 2 , wherein said one or more nucleating agents comprise a nucleating agent consisting of porous sodium bicarbonate.5. The formulation according to claim 4 , wherein said porous sodium bicarbonate is present in a polymeric mixture in quantities lower than 3% by weight.7. The formulation according to claim 1 , wherein the formulation comprises:PVC 30-60%,Isocyanate 20-60%, andLiquid anhydrides 3-40%,in presence ofZeolites less than 3%, andSodium bicarbonate less than 3%.8. A cross-linked expanded PVC foam obtained with a formulation according to claim 1 , wherein said foam has closed cells with a diameter smaller than or ...

Thermosetting epoxy resin compositions useful as structural reinforcement or structural foam

Thermosetting epoxy resin compositions on the one hand at room temperature in the incompletely cured state exhibit extremely slight alteration in shape and on the other hand develop a high surface tack, and, moreover, in the fully cured state are of high impact strength and at the same time exhibits high adhesion, particularly to metallic substrates. These compositions are ideally suited to the production of self-adhesive reinforcing elements.

New approach to heat expandable materials

A thermally expandable composition, including at least one epoxy-functional polymer, at least one thermoplastic polymer, at least one chemical blowing agent, and at least one activator, wherein the epoxy-functional polymer is present in the composition before expansion with an amount of between 30 and 75 wt.-%, based on the total composition, and the epoxy-functional polymer includes at least 300 mmol epoxy groups per kg polymer, and wherein the chemical blowing agent is able to form at least one reaction product with at least two amino groups upon thermal decomposition, and the chemical blowing agent is in the composition before expansion with an amount of between 5 and 30 wt.-%, based on the total composition.

POROUS RESIN MOLDED BODY AND MOLDING SET FOR FORMING POROUS RESIN MOLDED BODY

A porous resin molded body contains cellulose acylate (A), wherein the porous resin molded body has a porosity of about 2% or more and about 30% or less. 1. A porous resin molded body comprising:cellulose acylate (A),wherein the porous resin molded body has a porosity of about 2% or more and about 30% or less.2. The porous resin molded body according to claim 1 , wherein a pore-size distribution curve has one maximum peak claim 1 , and the one maximum peak has an apex in a range of about 10 nm or more and about 3000 nm or less in pore size.3. The porous resin molded body according to claim 1 , further comprising:a polyester resin (B); andan ester compound (C) having a molecular weight of about 250 or more and about 2000 or less.4. The porous resin molded body according to claim 3 , further comprising at least one polymer (D) selected from core-shell structure polymers having a core layer and a shell layer formed on a surface of the core layer and containing a polymer of an alkyl (meth)acrylate claim 3 , and olefin polymers including about 60 mass % or more of a structural unit derived from α-olefin.5. The porous resin molded body according to claim 3 , further comprising a poly(meth)acrylate compound (E) including about 50 mass % or more of a structural unit derived from an alkyl (meth)acrylate.6. The porous resin molded body according to claim 3 , wherein the cellulose acylate (A) is at least one selected from cellulose acetate propionate (CAP) and cellulose acetate butyrate (CAB).7. The porous resin molded body according to claim 3 , wherein the polyester resin (B) is a polyhydroxyalkanoate.8. The porous resin molded body according to claim 7 , wherein the polyester resin (B) is polylactic acid.9. The porous resin molded body according to claim 3 , wherein the ester compound (C) is a fatty acid ester compound.10. The porous resin molded body according to claim 9 , wherein the ester compound (C) is an adipic acid ester-containing compound.11. The porous resin ...

Thermal expansion compound for handle molding, preparation method and application technology thereof

The disclosure discloses a thermal expansion compound for handles, a preparation method, and applications thereof. The thermal expansion compound for handles is prepared by 20-80 wt of thermosetting resin, 5-50 wt of foaming agent, 5-50 wt of stuffing, and 0-60 wt of diluent. The thermal expansion compound for handles applies to the preparation of various sports instruments such as tennis rackets, badminton rackets, squash rackets, PK rackets, beach rackets, flexible rackets, ball bats and clubs. Handles prepared from the thermal expansion compound have an elegant appearance and a good hand feel, avoid secondary expansion during 100-160° C. post-heating treatment, and have a hardness of SHORE D 60-95.

Expansion system for flexible insulation foams

A flexible material for thermal and acoustical insulation comprising an expanded polymer (blend) based on at least one elastomer, wherein expansion is achieved by decomposition of a mixture of at least two chemical blowing agents, comprising the exothermic chemical blowing agent 4,4′-Oxybis(benzenesulfonyl hydrazide) (OBSH) and at least one endothermic blowing agent. 1. A polymeric mixture , comprising:a. ≤40.0 wt %, preferably ≤33.3 wt %, but ≥10.0 wt %, preferably ≥12.5 wt % of at least one elastomer or thermoplastic/elastomer-blend, of which at least 25 wt % are at least one sulphur and/or metal oxide crosslinkable polymer andb. 5 to 40 wt %, preferably 10 to 30 wt % of a blowing agent mixture comprising itself 70 to 95 wt % of 4,4′-Oxybis(benzenesulfonyl hydrazide) and 5 to 30 wt % of at least one endothermic blowing agent, wherein the 4,4′-Oxybis(benzenesulfonyl hydrazide) and the at least one endothermic blowing agent sum up to 100%.2. The polymeric mixture according to claim 1 , wherein the elastomer or thermoplastic/elastomer-blend comprises at least 80 phr of acrylonitrile butadiene rubber and/or polychloroprene and/or ethylene propylene diene rubber and/or butyl rubber claim 1 , including chlorinated and brominated butyl rubber and/or butadiene rubber and/or styrene butydiene rubber and/or polyvinyl chloride claim 1 , including its co- and terpolymers and/or polyethylene claim 1 , including its co- and terpolymers and/or chlorinated polyethylene.3. The polymeric mixture according to claim 1 , wherein the endothermic blowing agent of the blowing agent mixture is a carbonate or hydrogen carbonate claim 1 , preferably sodium bicarbonate.4. The polymeric mixture according to claim 1 , wherein both the 4 claim 1 ,4′-Oxybis(benzenesulfonyl hydrazide) and the at least one endothermic blowing agent have a median particle size of 1 to 20 μm claim 1 , preferably from 1 to 12 μm claim 1 , especially preferred from 2 to 8 μm according to ISO 13320:2009.5. The ...

LIQUID RESIN COMPOSITION

A liquid resin composition may include a base resin (A) in an amount of 100 parts by weight, a chemical foaming agent (B) in an amount of 2 parts by weight or more and 100 parts by weight or less, and water (C) in an amount of 1 part by weight or more and 30 parts by weight or less. The base resin may be a polymer that includes a hydrolyzable group bonded to a silicon atom, at least one reactive silicon group that is capable of being crosslinked by forming a siloxane bond, and a main chain that is constituted by an oxyalkylene-based monomer unit. The chemical foaming agent (B) may include a bicarbonate (B-1) and an acidic compound (B-2) having an acid dissociation constant pKa of 3.0 or less. 1. A liquid resin composition , comprising:a base resin (A) in an amount of 100 parts by weight;a chemical foaming agent (B) in an amount of 2 parts by weight or more and 100 parts by weight or less; andwater (C) in an amount of 1 part by weight or more and 30 parts by weight or less, a hydrolyzable group bonded to a silicon atom;', 'at least one reactive silicon group that is capable of being crosslinked by forming a siloxane bond; and', 'a main chain that is constituted by an oxyalkylene-based monomer unit, and, 'wherein the base resin (A) is a polymer havingwherein the chemical foaming agent (B) comprises a bicarbonate (B-1) and an acidic compound (B-2) having an acid dissociation constant pKa of 3.0 or less.2. The composition according to claim 1 , wherein the liquid resin composition is a multi-liquid type composition that comprises two or more different liquids.3. The composition according to claim 2 , wherein the liquid resin composition is composed of two different liquids claim 2 ,wherein the two liquids are liquid A, which includes the base resin (A) and the bicarbonate (B-1), and liquid B, which includes the acidic compound (B-2) and the water (C).4. The composition according to claim 1 , wherein the acidic compound (B-2) is an organic acid.5. The composition ...

PRODUCTION OF POLYISOCYANURATE FOAM PANELS

The present invention discloses the production of panels by a discontinuous process. The panels are produced by injecting a polyisocyanurate foam forming composition into the mold cavity at reduced pressure. The combination of certain polyisocyanurate foam forming formulation and the reduced pressure in the mold cavity allows production of and resulting sandwich panels in a discontinuous process where the produced panels are characterized by improved fire resistance. 2. A method of making a sandwich panel having two exterior shells and an intermediate polyisocyanurate (PIR) structural foam core claim 1 , comprising undertaking the method of claim 1 , wherein said closed mold cavity is defined by the two exterior shells and an annular frame.3. A method according to claim 1 , wherein the aromatic polyester polyol is at least 50 weight percent of the total amount of polyol.4. A method according to claim 1 , wherein the reaction mixture has an isocyanate index of greater than 350.5. A method according to claim 1 , wherein the mold cavity absolute pressure is from 800 to 950 mbar.6. A method according to claim 1 , wherein the blowing agent component comprises a physical and chemical blowing agent.7. A method according to claim 6 , wherein the chemical blowing agent is water claim 6 , formic acid or a combination thereof.8. The method according to claim 6 , wherein the physical blowing agent is pentane.9. A method according to claim 1 , wherein the foam has an applied density of 30 to 75 kg/m.10. A method according to claim 1 , wherein the reaction mixture additionally comprises a silicone surfactant.11. A method according to claim 1 , wherein the flame retardant is a halogen free flame retardant.12. (canceled) Polyisocyanurate foams are in general prepared by reacting a stoichiometric excess of polyisocyanate with a polyol or polyol mixture in the presence of a catalyst, a blowing agent, and generally other optional additives such as surfactants and the like. ...

A compounded polyethylene composition, process for its manufacturing and articles comprising it

The present invention relates to a compounded polyethylene composition having a density of 930 to 965 kg/mand comprising at least 0.01 percent by weight (wt-%) of sodium bicarbonate after compounding of the compounded polyethylene composition, wherein the ratio between sodium bicarbonate, in the polyethylene composition, before and after compounding is X, wherein X≤X Подробнее

Hot melt applicable structural adhesives

The invention relates to a structural adhesive formulation, which is heat activatable at a heat activation temperature; meltable without heat activation at an application temperature above its melting point and below the heat activation temperature; and solid at ambient temperature; wherein upon heat activation the structural adhesive formulation is capable of expansion with a volumetric expansion of up to about 250 vol.-%; wherein the heat activatable structural adhesive formulation comprises (a) an epoxy resin component; (b) an adhesion promoter component; (c) a cross-linking component; (d) a blowing component; (e) optionally, an impact modifier component; (f) optionally, a thixotropic filler component; and (g) optionally, a non-thixotropic filler component. The structural adhesive formulation is particularly useful for application by means of a hot melt applicator, preferably a hand held hot melt gun.

Organic Amine Salt Foamer

Disclosed is an organic amine salt foaming agent, that is, a composite polyurethane foaming agent, comprising: 1) hexafluorobutene; and 2) an alkanolamine salt mixture (MAA), the alkanolamine salt mixture (MAA) contains an organic amine salt compound having the following general formula (I): A[B](I); wherein A is one or two or three selected from the following anions: (b) carbonate: CO; (c) formate: HCOO; (d) bicarbonate: HO—COO. A polyurethane foaming method using carbon dioxide and an organic amine in combination is also disclosed, in which carbon dioxide is added to a polyurethane composition for foaming. A method for preparing an alkanolamine carbonate salt with low water content from ammonium carbonate and an epoxide is additionally disclosed, in which a liquid alkanolamine salt mixture is used as a dispersion medium or as a solvent for reaction raw material.

POLYOLEFIN RESIN FOAM PARTICLES, AND POLYOLEFIN RESIN IN-MOLD EXPANSION MOLDED ARTICLE

Polyolefin resin foam particles prepared by foaming polyolefin resin particles include a polyolefin resin composition including two or more inorganic antiblocking agents in a total amount of 0.03 parts by weight or more and 2 parts by weight or less relative to 100 parts by weight of a polyolefin resin. The polyolefin resin foam particles have an average cell diameter of 100 μm or more and 400 μm or less. 1. Polyolefin resin foam particles prepared by foaming polyolefin resin particles comprising:a polyolefin resin composition comprising two or more inorganic antiblocking agents in a total amount of 0.03 parts by weight or more and 2 parts by weight or less relative to 100 parts by weight of a polyolefin resin,wherein the polyolefin resin foam particles have an average cell diameter of 100 μm or more and 400 μm or less.2. The polyolefin resin foam particles according to claim 1 , wherein the two or more inorganic antiblocking agents are selected from the group consisting of silica claim 1 , silicate salts claim 1 , and alumina.3. The polyolefin resin foam particles according to claim 1 , wherein the two or more inorganic antiblocking agents are two inorganic antiblocking agents claim 1 , and are mixed at a weight ratio of 1:10 to 10:1.4. The polyolefin resin foam particles according to claim 1 , wherein the two or more inorganic antiblocking agents are silica and talc.5. The polyolefin resin foam particles according to claim 1 , wherein the polyolefin resin is a polypropylene resin.6. The polyolefin resin foam particles according to claim 5 , wherein a polyethylene resin having a melting point of 105° C. or more and 140° C. or less is used in combination in an amount of 0.1 parts by weight or more and 15 parts by weight or less relative to 100 parts by weight of the polypropylene resin.7. The polyolefin resin foam particles according to claim 6 , wherein the polyethylene resin is a high-density polyethylene.8. The polyolefin resin foam particles according to claim 5 ...

POLYPROPYLENE-BASED FOAMED MOLDED BODY AND MANUFACTURING METHOD OF POLYPROPYLENE-BASED FOAMED MOLDED BODY

In a polypropylene-based foamed molded body of the present invention, a density which is measured on the basis of ISO1183 is greater than or equal to 0.15 g/cmand less than or equal to 0.54 g/cm, thermal resistance (R) at 30° C. in a thickness direction which is measured on the basis of ASTM E1530 is greater than or equal to 0.020 m·K/W and less than or equal to 0.125 m·K/W, thermal capacity per unit area (Q) at 30° C. is greater than or equal to 1.0 kJ/m·K and less than or equal to 2.5 kJ/m·K, and Expression 1 described below is satisfied. 1. A polypropylene-based foamed molded body ,{'sup': 3', '3, 'wherein a density which is measured on the basis of ISO1183 is greater than or equal to 0.15 g/cmand less than or equal to 0.54 g/cm,'}{'sup': 2', '2, 'thermal resistance (R) at 30° C. in a thickness direction which is measured on the basis of ASTM E1530 is greater than or equal to 0.020 m·K/W and less than or equal to 0.125 m·K/W,'}{'sup': 2', '2, 'thermal capacity per unit area (Q) at 30° C. is greater than or equal to 1.0 kJ/m·K and less than or equal to 2.5 kJ/m·K, and'} {'br': None, 'i': Q>', 'R, 'sup': '1/2', '1/(4×)\u2003\u2003(Expression 1)'}, 'Expression 1 described below is satisfied.'}2. The polypropylene-based foamed molded body according to claim 1 ,{'sub': '0', 'claim-text': {'br': None, 'i': t', 'W', 'D', '×S, 'sub': 0', '0, '(mm)=10×/()\u2003\u2003(Expression 2)'}, 'wherein a substantial thickness (t) of the polypropylene-based foamed molded body which is defined by Expression 2 described below is greater than or equal to 0.7 mm and less than 1.5 mm,'}{'sub': '0', 'sup': 3', '2, 'in Expression 2, W indicates a mass (g) of a plate-like foamless test piece which is defoamed and is obtained by defoaming a square plate-like test piece cut out from the polypropylene-based foamed molded body at 200° C. under reduced pressure, and then, by performing a pressurized slow cooling treatment, Dindicates a density (g/cm) of the obtained foamless test piece, and S ...

MODIFIED SILICONE RESIN FOAM

A modified silicone resin foam is obtained by curing a foamable liquid resin composition including: 100 parts by weight of a base material resin (A) composed of 65 to 95 parts by weight of a polymer (a) and 5 to 35 parts by weight of a reactive plasticizer (b); 0.1 to 5 parts by weight of a silanol condensation catalyst (B); and 2 to 40 parts by weight of a chemical foaming agent (C). The polymer (a) contains 1.0 to 2.0 reactive silicon groups in a molecular chain and has a main chain comprising oxyalkylene-based units. The reactive plasticizer (b) is a polymer containing 1.0 or fewer reactive silicon groups at one terminal end of a molecular chain and has a main chain comprising oxyalkylene-based units. A percent elongation of the foam is 300 to 1000% in a 25° C. atmosphere. 1. A modified silicone resin foam , obtained by curing a foamable liquid resin composition comprising:100 parts by weight of a base material resin (A) composed of 65 to 95 parts by weight of a polymer (a) and 5 to 35 parts by weight of a reactive plasticizer (b);0.1 to 5 parts by weight of a silanol condensation catalyst (B); and2 to 40 parts by weight of a chemical foaming agent (C),wherein the polymer (a) contains 1.0 to 2.0 reactive silicon groups in a molecular chain and has a main chain comprising oxyalkylene-based units,wherein the reactive plasticizer (b) is a polymer containing 1.0 or fewer reactive silicon groups at one terminal end of a molecular chain and has a main chain comprising oxyalkylene-based units, andwherein a percent elongation of the foam is 300 to 1000% in a 25° C. atmosphere.2. The modified silicone resin foam according to claim 1 , wherein the polymer (a) has a number average molecular weight of 3000 to 100000.3. The modified silicone resin foam according to claim 1 , wherein the reactive plasticizer (b) is a polymer having a number average molecular weight of 2000 to 20000.4. The modified silicone resin foam according to claim 1 , wherein the silanol condensation ...

THERMOPLASTIC POLYMERS FOAMED WITH A SEMICARBAZIDE

A method of preparing a foamed thermoplastic polymer comprises contacting a chemical blowing agent (A) which is a semi-carbazide with a thermoplastic polymer or a precursor of a thermoplastic polymer. Blowing agent (A) is preferably p-toluenesulfonyl semi-carbazide and said polymer is preferably PVC. Formulations, including liquid formulations which include the blowing agent (A) and other ingredients, are also described. 1. A method of preparing a foamed thermoplastic polymer , the method comprising contacting a chemical blowing agent (A) which is a semi-carbazide with a thermoplastic polymer or a precursor of a thermoplastic polymer.2. (canceled)3. (canceled)5. (canceled)6. A method according to claim 1 , wherein said blowing agent (A) is p-toluenesulfonyl semi-carbazide.7. A method according to claim 4 , wherein the method comprises contacting the chemical blowing agent (A) with said thermoplastic polymer during melt processing of the polymer and a liquid formulation comprising chemical blowing agent (A) is introduced directly into an extruder claim 4 , wherein said liquid formulation is comprised of 20 to 30 wt % carrier claim 4 , 8 to 25 wt % toluenesulfonyl semi-carbazide and 25 to 65 wt % bicarbonate claim 4 , and wherein said thermoplastic polymer is melt-processed at a temperature of at least 170° C. and at a temperature not exceeding 250° C.8. A method according to claim 7 , wherein said thermoplastic polymer comprises PVC.9. A method according to claim 8 , wherein a stabiliser formulation is included with said thermoplastic polymer which comprises PVC for stabilising the PVC against degradation; wherein claim 8 , said stabiliser formulation comprises a barium or calcium compound in combination with a zinc compound.10. (canceled)11. (canceled)12. A method according to claim 4 , wherein at least 0.05 parts by weight (pbw) of said chemical blowing agent (A) is contacted with 100 pbw of said thermoplastic polymer in the method and less than 0.4 pbw of said ...

Bio-based eva compositions and articles and methods thereof

A copolymer may include ethylene and vinyl acetate, in which the ethylene is at least partially obtained from a renewable source of carbon. Embodiments may also be directed to curable polymer compositions, expandable polymer compositions, articles, cured articles, and expanded articles formed from or including such copolymers of ethylene and vinyl acetate, in which the ethylene is at least partially obtained from a renewable source of carbon. A process for producing an ethylene vinyl acetate copolymer may include

Process for Producing a Foam Film Laminate and Use Thereof

The invention relates to a process for producing a foam film laminate having at least one compact outer layer and at least one layer composed of extruded foamed polymer bound to the outer layer, wherein the production of the layer of foamed polymer is effected in such a way that a polymer material is admixed with a chemical blowing agent which is solid at room temperature and, during or after the extrusion, is heated up to or above the activation temperature of the blowing agent, in order to obtain the layer of foamed polymer, wherein the processes is characterized in that the polymer material contains 5% to 60% by weight of at least one HMS polyolefin having a in accordance with ISO 20965 (as at 15 Feb. 2005, measurement apparatus type A) of 10to 10Pa s measured at 190° C. within a range of Hencky strain rate of 0.01 sto 1 sat a Hencky strain of 3.0. The invention further relates to a polymer composition for the foam layer for performance of the process and to a multilayer polymer film produced by the process and to the use thereof. 117-. (canceled)18. A process for producing a foam film laminate comprising at least one compact covering layer and at least one layer of extruded foamed plastic joined to the covering layer , wherein the production of the layer of foamed plastic is effected in a manner where a plastics material is admixed with a chemical blowing agent which is solid at room temperature and during or after extrusion is heated to or above an activation temperature of the chemical blowing agent to obtain the layer of foamed plastic; and ,wherein the plastics material contains 5 wt % to 60 wt % of at least one HMS polyolefin having a stretching viscosity according to ISO 20965 (as at Feb. 15, 2005, type A measuring apparatus) of 104 to 107 Pa-s measured at 190° C. in a Hencky strain rate range of 0.01 s-1 to 1 s-1 at a Hencky strain of 3.0.19. The process as claimed in claim 18 , wherein the plastics material contains 10 wt % to 55 wt % of the at least one ...

Foamable, insulating-layer-forming multi-component composition having improved storage stability and use of the same

A foamable, insulating-layer-forming multi-component composition contains alkoxysilane-functional polymer, insulating-layer-forming fire-protection additive, blowing-agent mixture, cross-linking agent, and a flame-protection agent that is miscible in water or another compound that is miscible in water. The individual ingredients of the blowing-agent mixture are separated from one another to ensure inhibition of reaction prior to use of the composition, and the cross-linking agent is separated from the alkoxysilane-functional polymer to ensure inhibition of reaction prior to use of the composition. The foamable, insulating-layer-forming multi-component composition can be used as a foam-in-place foam or for production of molded blocks.

Preparation Method For Super Absorbent Polymer Sheet

A method of preparing a superabsorbent polymer sheet by polymerization of monomers in the presence of an encapsulated foaming agent and an inorganic foaming agent is provided. According to the method of preparing the superabsorbent polymer sheet of the present invention, a porous and flexible superabsorbent polymer sheet having an excellent initial absorption rate may be prepared.

CHEMICAL BLOWING AGENT AND THERMALLY EXPANDABLE THERMOPLASTIC COMPOSITION

A chemical blowing agent is described that includes at least one tertiary alkyl carbamate. The chemical blowing agent can be activated thermally and is suitable for foaming thermoplastic materials and can, for example, be incorporated into thermally expandable baffle and/or reinforcement elements, which can be used in automotive manufacturing and building insulation. 2. The blowing agent according to claim 1 , wherein said index n equals 2 and said radical A represents a linear or branched divalent hydrocarbon radical having 2 to 10 carbon atoms and which optionally contains one or more heteroatoms claim 1 , in particular in the form of ether oxygen.3. The blowing agent according to claim 1 , wherein said carbamate CA has a molecular weight of between 131 g/mol and 750 g/mol claim 1 , preferably between 131 g/mol and 500 g/mol claim 1 , more preferably between 131 g/mol and 450 g/mol.4. The blowing agent according to claim 1 , wherein at least 50% of said carbamate CA decomposes under gas release at a temperature of between 170° C. and 230° C. within 10 min.5. The blowing agent according to claim 1 , wherein said radicals R claim 1 , R claim 1 , and Rrepresent methyl groups.6. A method of manufacturing a carbamate CA suitable to be used in the chemical blowing agent according to claim 5 , comprising the reaction of a mono- or polyamine according to formula (II) with n equivalents di-tert-butyl dicarbonate claim 5 ,{'br': None, 'sup': '4', 'sub': 'n', 'Al\ue8a0NHR]\u2003\u2003(II).'}7. A method of manufacturing a carbamate CA suitable to be used in a chemical blowing agent according to claim 1 , comprising the reaction of a mono- or polyisocyanate according to formula (III) with n equivalents of a tertiary alcohol HO—C(R)(R)(R) claim 1 ,{'br': None, 'sub': 'n', 'Al\ue8a0NCO]\u2003\u2003(III)'}{'sup': 1', '2', '3, 'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein radicals A, R, R, and Rand index n have the same meaning as described in .'}8. A thermally ...

FOAMING ASSISTANT MATERIAL AND FOAM-MOLDING METHOD

A foaming assistant material and a foam-molding method, which can achieve the functions of a nucleating agent, a dispersant, and the like sufficiently so that the cells can have smaller diameter, the mixing of foreign substances is prevented, and so on, and can produce the high-quality foam-molded article, are provided. The foaming assistant material is kneaded together with a raw material pellet and the mixture is subjected to the foam molding. The foaming assistant material is a pellet obtained by adding inorganic particles, a chemical foaming agent, and a dispersant to a dilution resin. An antioxidant may be added further to the dilution resin. In the foam-molding method, inorganic particles, a chemical foaming agent, a dispersant, and an antioxidant are added to a raw material resin at the same time in a state that the inorganic particles, the chemical foaming agent, the dispersant, and the antioxidant are mixed in advance. 1. A foaming assistant material kneaded together with a raw material resin pellet and subjected to foam molding , wherein inorganic particles , a chemical foaming agent , and a dispersant are added to a dilution resin.2. The foaming assistant material according to claim 1 , wherein an antioxidant is further added to the dilution resin.3. The foaming assistant material according to claim 2 , wherein a phenolic antioxidant and a phosphorus antioxidant are added as the antioxidant.4. The foaming assistant material according to claim 3 , wherein the phenolic antioxidant is contained by 1.25 to 3.75 mass % claim 3 , the phosphorus antioxidant is contained by 3.00 to 15.00 mass % claim 3 , the inorganic particles are contained by 5.00 to 10.00 mass % claim 3 , the chemical foaming agent is contained by 2.80 to 11.20 mass % claim 3 , an assistant chemical foaming agent is contained by 2.20 to 8.80 mass % claim 3 , the dispersant is contained by 5.00 to 20.00 mass % claim 3 , and the dilution resin is contained by 31.25 to 80.75 mass %.5. The foaming ...

SUPERABSORBENT POLYMER HAVING HIGH ABSORPTION RATE UNDER LOAD AND PREPARATION METHOD THEREOF

Provided are a superabsorbent polymer and a preparation method thereof. In the superabsorbent polymer according to the present invention, a low-temperature foaming agent are used together with a high-temperature foaming agent to control the size and distribution of internal pores of the superabsorbent polymer, thereby increasing absorption rate under load without reduction in gel strength. 1. A superabsorbent polymer comprising a crosslinked polymer resulting from polymerization and internal crosslinking of a monomer composition comprising acrylic acid-based monomers having acidic groups which are at least partially neutralized , and a surface crosslinking layer formed on the surface of the crosslinked polymer ,wherein the superabsorbent polymer has centrifuge retention capacity (CRC) as 29.5 g/g or more, absorbency under load (AUL) as 18 g/g or more, gel bed permeability (GBP) as 60 Darcy or more, and 5-min gel-AUL as 18.0 g/g or more.2. The superabsorbent polymer of claim 1 , wherein a ratio (A:B) of a total pore area ratio (A) of pores having a diameter of 5 μm to 100 μm and a total pore area ratio (B) of pores having a diameter of 100 μm to 400 μm in the superabsorbent polymer is 3:7 to 9:1.3. The superabsorbent polymer of claim 1 , wherein a ratio (A:B) of a total pore area ratio (A) of pores having a diameter of 5 μm to 100 μm and a total pore area ratio (B) of pores having a diameter of 100 μm to 400 μm in the superabsorbent polymer is 4:6 to 8:2.4. The superabsorbent polymer of claim 1 , further comprising a low-temperature foaming agent and a high-temperature foaming agent which are dispersed in the crosslinked polymer.5. The superabsorbent polymer of claim 4 , wherein the low-temperature foaming agent is sodium bicarbonate claim 4 , sodium carbonate claim 4 , potassium bicarbonate claim 4 , potassium carbonate claim 4 , calcium bicarbonate claim 4 , calcium carbonate claim 4 , magnesium bicarbonate claim 4 , or magnesium carbonate.6. The superabsorbent ...

ALKALI METAL BICARBONATE PARTICLES WITH INCREASED DISSOLUTION TIME

Powder compositions comprising alkali metal bicarbonate particles and an additive. A process for preparing alkali metal bicarbonate particles by spray-drying of an aqueous solution or suspension comprising 1-10% by weight of alkali metal bicarbonate and a resin acid or a fatty acid as additive. A process for preparing alkali metal bicarbonate particles by co-grinding the alkali metal bicarbonate in the presence of a resin acid as additive. A process for preparing alkali metal bicarbonate particles by fluidized bed coating of the alkali metal bicarbonate in the presence of a resin acid, fatty acid or a wax as additive. 1. A process for preparing alkali metal bicarbonate particles comprising:spray-drying of an aqueous solution or suspension comprising 1 to 10% by weight of an alkali metal bicarbonate and 1 to 10000 ppm of a resin acid or a fatty acid, or salts thereof; orco-grinding of an alkali metal bicarbonate in the presence of 0.1 to 20 parts by weight of a resin acid or salt thereof, per 100 parts by weight of the substance undergoing milling; orfluidized bed coating wherein an alkali metal bicarbonate is coated in the presence of 0.1 to 20 parts by weight of a resin acid a resin acid or a fatty acid, or salts thereof, or a wax, per 100 parts by weight of the alkali metal bicarbonate to be coated.2. The process for preparing alkali metal bicarbonate particles according to claim 1 , comprising co-grinding of the alkali metal bicarbonate in the presence of 0.1 to 20 claim 1 , by weight of a resin acid or salt thereof claim 1 , per 100 parts by weight of the substance undergoing milling.3. The process for preparing alkali metal bicarbonates according to claim 1 , comprising fluidized bed coating wherein the alkali metal bicarbonate is coated in the presence of 0.1 to 20 by weight of a resin acid a resin acid or a fatty acid claim 1 , or salts thereof claim 1 , or a wax claim 1 , per 100 parts by weight of the alkali metal bicarbonate to be coated.5. The process for ...