ИОННЫЕ СИЛИКОНОВЫЕ ГИДРОГЕЛИ С УЛУЧШЕННОЙ ГИДРОЛИТИЧЕСКОЙ СТАБИЛЬНОСТЬЮ

Изобретение относится к офтальмологическим устройствам на основе ионных силиконовых гидрогелей. Предложена контактная линза, образованная полимеризацией состава, содержащего по меньшей мере один силиконсодержащий компонент и по меньшей мере один ионный компонент, имеющий по меньшей мере одну группу карбоновой кислоты в концентрации до 9,3 ммоль/100 г, где указанные компоненты присутствуют в мольных концентрациях, обеспечивающих произведение устойчивости менее 0,0006, и ионный компонент присутствует в полимере в концентрации от 0,05 до 0,8 вес.%. Ионный компонент выбирается из группы, включающей акриловую, метакриловую, фумаровую, малеиновую, итаконовую, кротоновую, коричную и винилбензойную кислоты, моноэфиры фумаровой, малеиновой и итаконовой кислот и N-винилоксикарбонилаланина (N-винилоксикарбонил-β-аланина), а также их гомополимеры и сополимеры. Силиконсодержащий компонент выбирается из соединений формулы I, где b=2-20; по меньшей мере одна концевая группа Rпредставляет собой моновалентную ...

Комплексное соединение иона Co2+ и полиакриловой кислоты, обладающее гемостатическими, антимикробными и ранозаживляющими свойствами

Изобретение относится к фармацевтике и медицинской химии, в частности к комплексному соединению иона Со2+ и полиакриловой кислоты с молекулярной массой 9356, 46072, 99013 или 184631 Да. Предложенное комплексное соединение обладает высокой гемостатической, антимикробной и ранозаживляющей активностью при минимальной общей токсичности для позвоночных. 11 ил., 13 табл., 7 пр.

НИЗКОМОЛЕКУЛЯРНЫЕ СОПОЛИМЕРЫ МОНОЭТИЛЕННЕНАСЫЩЕННЫХ КАРБОНОВЫХ КИСЛОТ И ИХ ПРИМЕНЕНИЕ В КАЧЕСТВЕ ИНГИБИТОРОВ СОЛЕОТЛОЖЕНИЯ В ВОДООБОРОТНЫХ СИСТЕМАХ

Изобретение относится к способу получения водных растворов низкомолекулярных сополимеров моноэтиленненасыщенных карбоновых кислот с 3-4 атомами углерода и к их применению в качестве ингибиторов солеотложения в водооборотных системах и в теплоэнергетике. Способ получения полимерного ингибитора солеотложений осуществляют радикальной полимеризацией мономерных компонентов в смеси воды и органического растворителя. Проводят радикальную сополимеризацию акриловой, и/или метакриловой, и/или малеиновой, и/или фумаровой кислот, и/или аллилсульфокислоты, и/или их водорастворимые соли с концентрацией мономеров 10-30 мас.%, в качестве органического растворителя используют ацетонитрил, в качестве инициатора используют пероксосоединения в концентрации 0,1-1 мас.% без использования фосфор- и серосодержащих регуляторов молекулярной массы в режиме дозирования реагентов в реакционную массу, а после окончания полимеризации реакционную массу концентрируют путем упаривания органического растворителя. Технический ...

ПЛАСТИЗОЛИ НА ОСНОВЕ СОПОЛИМЕРА МЕТИЛМЕТКАРИЛАТА

... 1. Пластизоль на основе связующего, отличающийся тем, что ! a) связующее получают эмульсионной полимеризаций, ! b) более 50 мас.% мономеров, из которых состоит связующее, выбраны из группы, включающей акриловую кислоту, сложные эфиры акриловой кислоты, метакриловую кислоту и сложные эфиры метакриловой кислоты, и ! c) используемый для получения связующего эмульгатор содержит по меньшей мере одну сульфатную группу. ! 2. Пластизоль на основе связующего по п.1, отличающийся тем, что связующее состоит из первичных частиц, которые обладают структурой ядро/оболочка, причем ядро и оболочка отличаются составом мономеров. ! 3. Пластизоль на основе связующего по п.1, отличающийся тем, что связующее состоит из первичных частиц, которые обладают многослойной структурой, причем вокруг находящегося в центре частицы ядра концентрически расположены несколько оболочек, которые могут отличаться друг от друга составом мономеров. ! 4. Пластизоль на основе связующего по п.1, отличающийся тем, что связующее состоит ...

ИОННЫЕ СИЛИКОНОВЫЕ ГИДРОГЕЛИ С УЛУЧШЕННОЙ ГИДРОЛИТИЧЕСКОЙ СТАБИЛЬНОСТЬЮ

... 1. Полимер, образованный из реакционно-способных компонентов, в состав которых входит по меньшей мере один силиконсодержащий компонент, включающий по меньшей мере одну триметилсилоксильную силильную группу и по меньшей мере один ионный компонент, включающий по меньшей мере одну анионную группу, причем указанный силиконсодержащий компонент и указанный ионный компонент присутствуют в указанном полимере в мольных концентрациях, обеспечивающих произведение устойчивости менее приблизительно 0,002. ! 2. Полимер по п.1, в котором указанное произведение устойчивости составляет менее приблизительно 0,001. ! 3. Полимер по п.1, в котором указанное произведение устойчивости составляет менее приблизительно 0,0006. ! 4. Полимер по п.1, в котором указанный по меньшей мере один силиконсодержащий компонент выбирается из соединений формулы I: ! ! где b находится в диапазоне от 0 до 100, R1 представляет собой моновалентную группу, содержащую по меньшей мере один этиленненасыщенный фрагмент; каждая группа ...

Стабильные при хранении водные восковые дисперсии

Изобретение относится к водным восковым дисперсиям, которые могут быть использованы в качестве добавок к лакокрасочным материалам, покрытиям по дереву, покрытиям для металлических банок. Предложена водная восковая дисперсия, содержащая в мас.%: от 20 до 55 микронизированного воска синтетического или натурального происхождения со средним размером частиц от 1 до 100 мкм, причем в качестве воска натурального происхождения использован карнаубский воск, а в качестве воска синтетического происхождения использован немодифицированный полиэтиленовый воск или полиэтиленовый воск, модифицированный введением в его структуру полярных групп; от 1 до 10 диспергирующего агента на акриловой основе; от 1 до 10 эмульгатора, в качестве которого использованы неионогенные поверхностно-активные вещества; от 0,05 до 3 стабилизатора, выбранного из полисахаридов; от 0,1 до 0,8 силиконового пеногасителя; от 0,1 до 0,5 биоцида и вода - остальное до 100. Технический результат – получение стабильной при хранении водной ...

Verfahren zur Herstellung von Acryl- und Methacrylsaeure-polymerisaten und -mischpolymerisaten

SPRÜPOLYMERISATIONSVERFAHREN

Plastisole auf Basis eines Methylmethacrylat-Mischpolymerisats

Die Erfindung betrifft Plastisol-Systeme mit verbesserter Haftung und geringerer Wasseraufnahme.

Fiberglass nonwoven catalyst

Cure accelerators for anaerobic curable compositions

Improvements in methods of polymerising unsaturated organic compounds

Ethylenically unsaturated compounds are polymerized in the presence of an organic peroxide, a tertiary amine and a triester of phosphorous acid. The monomer may be an ester of acrylic or methacrylic acid. The triester may be tris-(b -chlorethyl) phosphite or tris-octyl phosphite. The tertiary amine may be dimethyl aniline or diethyl aniline. The peroxide may be benzoyl peroxide. The polymerizable composition may also contain finely divided polymer of the monomer to be polymerized, ultra-violet light absorbers, e.g. 2,4-dihydroxybenzophenone, and other co-catalysts and accelerators.

Water-swellable hybrid material with inorganic additives and process for its preparation

Water-swellable hybrid material with inorganic additives and process for its preparation

Water-swellable hybrid material with inorganic additives and process for its preparation

Water-swellable hybrid material with inorganic additives and process for its preparation

PROCEDURE FOR THE PRODUCTION WATER-SOLUBLE POLYELEKTROLYTEN

PROCEDURE FOR THE PRODUCTION OF SUPER+ABSORBING POLYMERS

USING SULFUR CONNECTIONS IN THE FORM OF TRANSFER MEANS FOR THE STEERED RADICAL POLYMERIZATION OF ACRYLIC ACID MANUFACTURE OF POLYMERS AND THEIR USE

SPRÜPOLYMERISATIONSVERFAHREN

ARRANGEMENT FOR THE TREATMENT OF AN POLYMERIZATION-ABLE MATERIAL

PROCEDURE FOR THE PRODUCTION OF WATER-ABSORBING RESIN AND USE OF IT

PROCEDURE FOR THE PRODUCTION OF MICRO GEL PARTICLES BY STEERED RADICALS POLYMERIZING IN AN AQUEOUS DISPERSION WITH NITROXIDSTEUERUNGSMITTELN

PHOTO-HARDENABLE ELASTOMER COMPOSITIONS

PROCEDURE FOR THE PRODUCTION OF POLYMERS OF THE ACRYLIC ACID OR METHACRYLSAEURE

COPOLYMERS, THEIR PRODUCTION AND USE AS NET AND DISPERSING AGENTS

POLYMERE ONE OF INSATIATED ACIDS.

PROCEDURE FOR THE PRODUCTION OF SMELL-POOR HYDRAULIC GEL OF FORMING POLYMERS

PROCEDURE FOR THE PRODUCTION OF POLYMERS BY A FREE RADICAL PROCEDURE, POLYMERIZATION AND CONDENSATIONSREAKTION AND APPARATUS FOR IT AS WELL AS MANUFACTURED PRODUCTS

PROCEDURE FOR THE PRODUCTION OF WATER-SOLUBLE POLYMERS

AMINE THIOLKETTENÜBERTRAGUNGSMITTEL

Primer, ink, and varnish compositions and associated printing apparatus

The invention describes new designs of commercial inkjet or flexographic web and sheet fed presses with pre-coating prior to printing which may upgrade the quality of the substrates and render them printable by all printing technologies including inkjet and digital. Also described are curable water-based coatings, inkjet and flexographic inks and overprint varnishes which may be radiation cured at high speed without the need for external applied heat to remove water. When used as coatings or primers, the compositions of the invention may create a surface on cellulosic substrates, polymeric films and some metal surfaces which are suitable for printing on by most printing methods including but not limited to inkjet, wet and dry toner systems, lithographic, gravure, flexographic and 4-D printing. The primer/coatings may also add up to 35% tensile strength to lightweight "thin" papers. The primer/coatings, inks and overprint varnishes can be cured by UV with or without the need for added commercial ...

Poly(acrylic acid) from bio-based acrylic acid and its derivatives

Bio-based glacial acrylic acid, produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof and having impurities of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof, is polymerized to poly(acrylic acid) or superabsorbent polymer using the same processes as petroleum-derived glacial acrylic acid.

PROCESS FOR PRODUCING POLYMER, COATING COMPOSITION AND COATED ARTICLE

METHOD FOR CONTROLLED FREE RADICAL POLYMERISATION OF ACRYLIC ACID AND SALTS THEREOF, RESULTING LOW-POLYDISPERSITY POLYMERS, AND THEIR USES

SWELLABLE POLYMER WITH ANIONIC SITES

The invention is directed to stable crosslinked water-soluble swellable polymers and methods for making same. More particularly, the invention relates to a composition comprising expandable polymeric particles having anionic sites and labile crosslinkers and stable crosslinkers, said particle mixed with a fluid and a cationic crosslinker that is capable of further crosslinking the particle on degradation of the labile crosslinker and exposure of the anionic sites so as to form a gel. A particularly important use is as an injection fluid in petroleum production, where the expandable polymeric particles are injected into target zone and when the heat and/or pH of the target zone cause degradation of the labile crosslinker and the particle expands, the cationic crosslinker crosslinks the polymer to form a gel, thus diverting water to lower permeability regions and improving oil recovery.

MANUFACTURE OF POLYMERS OF ACRYLIC ACID OR METHACRYLIC ACID

An improved process for the production of polymers of acrylic acid or methacrylic acid by polymerizing acrylic acid or methacrylic acid in isopropanol or in a water-isopro-panol mixture containing at least 40% by weight of isopropanol in the presence of polymerization initiators at a temperature of from 120 to 200.degree.C under pressure. The polymers obtained are used as dispersing agents for inorganic pigments.

PRODUCTION OF HYDROGELS

Process are provided herein for producing highly water-absor-bable and water-retainable hydrogels having a large particle diameter together with a sufficient gel strength. The process involves the use of a specific dispersing agent in the water-in-oil type inverse phase suspension polymerization in an organic solvent polymerization medium of an .alpha. , .beta. -unsaturated carboxylic acid and/or its alkali metal salt in the presence or absence of a cross-linking agent. The improvement involves using a carboxyl-containing polymer having an affinity to the organic solvent which is used as the dispersing agent. Due to the high waterabsorbability and water-retainability, along with the superior gel strength and the stable gel structure, the hydrogels provided herein enlarge the conventional range of usages. Thus, they may be used for various sanitary materials, for example, disposable diapers, tampons, sanitary cottons, bandages, napkin and other usages where they contact the human body, without ...

WASHING AND CLEANING MULTI-LAYER FILMS, METHOD FOR THE PRODUCTION AND USE THEREOF

The present invention relates to a washing and cleaning multi-layer film comprising at least one layer containing a polymer composition or consisting of a polymer composition, obtainable by radical polymerization of a monomer composition which contains at least one a,ß-ethylenically unsaturated carboxylic acid or a salt or an anhydride thereof, wherein the radical polymerization takes place in the presence of at least one polyether component. The invention further relates to a method for producing such a multi-layered film, to the use of such a multi-layered film and to a covering or coating for a washing or cleaning composition portion which comprises such a multi-layered film or consists thereof.

SYSTEMS AND PROCESSES FOR POLYACRYLIC ACID PRODUCTION

Disclosed are systems and methods for the production of polyacrylic acid and superabsorbent polymers from ethylene oxidation to form ethylene oxide. Reacting the ethylene oxide with carbon monoxide to form to beta propiolactone (BPL) or polypropiolactone (PPL), or a combination thereof. An outlet configured to provide a carbonylation stream comprising the BPL or PPL, or a combination thereof and using one or more reactors to convert BPL to acrylic acid or to convert at least some of the BPL to PPL, and then to convert PPL to acrylic acid. An outlet configured to provide a PPL stream to a second reactor tm to convert at least some of the PPL to AA or a third reactor to convert at least some of the PPL to AA. The outlet configured to provide an AA stream to a fourth reactor to convert the AA to polyacrylic acid.

A PROCESS FOR THE PRODUCTION OF METHACRYLIC ACID AND ITS DERIVATIVES AND POLYMERS PRODUCED THEREFROM

A process for the production of methacrylic acid is described. The process comprises the base catalysed decarboxylation of at least one or a mixture of dicarboxylic acids selected from itaconic, citraconic or mesaconic acid. The decarboxylation is carried out in the range greater than 240 and up to 275°C to provide high selectivity. The methacrylic acid product may be esterified to produce an ester. A method of preparing polymers or copolymers of methacrylic acid or methacrylic acid esters using the process is also described. Optionally, the process may be preceded with a decarboxylation and, if necessary, a dehydration step on a source of pre-acid such as citric acid or isocitric acid.

ACRYLIC ACID POLYMERIZATION

PROCESS FOR PRODUCING POLYACRYLIC ACIDS

The invention relates to a process for producing polyacrylic acids and copolymerizates of acrylic acid with up to 50 mol % of comonomers. These compounds have a molecular weight less than 100 000, measured at a pH of 8, and 10 to 60 mol % is neutralized with calcium hydroxide. The invention also relates to the use of these products as grinding and dispersing aids for calcium carbonate.

Verfahren zur Herstellung von körnigen, Polymethacrylsäure in wesentlichen Mengen enthaltenden, hochpolymeren Stoffen.

Verfahren zur Herstellung wasserlöslicher Polymerisate bzw. Mischpolymerisate

Procédé de polymérisation

Procédé de préparation de polymères réticulés

Verfahren zur Polymerisation olefinisch ungesättigter organischer Verbindungen

Procédé de préparation de polymères à groupements anhydride

Matériel pour la préparation d'un ciment chirurgical

VERFAHREN ZUR HERSTELLUNG PERLFOERMIGER POLYMERISATE DER ACRYLSAEURE UND DEREN VERWENDUNG.

THE PROCESS FOR PREPARATION OF AQUEOUS SOLUTIONS OF POLYACRYLIC ACIDS, COPOLYMERS OF THESE SUBSTANCES AND THEIR CORRESPONDING SALTS.

METHOD OF PRODUCING METHACRYLIC ACID AND ITS DERIVATIVES AND POLYMERS, OBTAINED FROM THEM

PRODUCTION OF MONOMER WITH EXCESS NEUTRALIZATION FOR PRODUCTION OF VODOABSORBIRUYuShchIKh POLYMER PARTICLES

METHOD OF PRODUCING METHACRYLIC ACID, ITS DERIVATIVES AND POLYMERS BASED ON METHACRYLIC ACID

POLYMERS, OBTAINED WITH THE APPLICATION OF CONNECTIONS OF SULFUR AS THE CHAIN-TRANSFER AGENTS FOR THE CONTROLLED POLYMERIZATION OF ACRYLIC ACID, I THEIR APPLICATION

PROCESS FOR PRODUCING HIGH-SWELLABILITY POLYMER COMPOSITES

ПОЛИМЕРЫ АКРИЛОВОЙ КИСЛОТЫ, ПОЛУЧАЕМЫЕ С ПРИМЕНЕНИЕМ СОЕДИНЕНИЙ СЕРЫ В КАЧЕСТВЕ АГЕНТОВ ПЕРЕДАЧИ ЦЕПИ, ИХ ПРИМЕНЕНИЕ И СОДЕРЖАЩИЕ ИХ ВОДНЫЕ СУСПЕНЗИИ, ВОДНЫЕ ДИСПЕРСИИ И СОСТАВЫ

Изобретение относится к полимерам, получаемым при использовании серосодержащих соединений в способе контролируемой радикальной полимеризации в воде акриловой кислоты и/или акриловой кислоты с водорастворимыми мономерами. Оно также относится к их применению в качестве диспергирующих средств или средств, способствующих измельчению и/или соизмельчению минеральных веществ в водных суспензиях, и в качестве диспергирующих средств, вводимых непосредственно в водные составы, содержащие минеральные вещества. Наконец, изобретение относится к составам минеральных веществ, получаемым этим способом.

Normal;heading 1;heading 2;heading 3;PROCESS FOR THE PRODUCTION OF METHACRYLIC ACID AND ITS DERIVATIVES AND POLYMERS PRODUCED THEREFROM

Ionic silicone hydrogels having improved hydrolytic stability

New polymers absorbents, manufactoring process and their application in particular to the articlesd' hygiene

Polymères absorbants, réticulés, hydrophobes, insolubles dans l'eau, sous forme de microperles, à base de silice et d'acide acrylique partiellement salifié par un métal alcalin caractérisés par le fait qu'ils peuvent être obtenus par un procédé de polymérisation en suspension eau dans huile dans lequel on introduit lentement, sous agitation, dans une phase huile parfaitement désoxygénée maintenue à l'ébullition et contenant un colloïde protecteur, une phase aqueuse obtenue extemporanément à partir d'une part, d'une solution aqueuse contenant un ou plusieurs amorceurs de polymérisations hydrosolubles, générateurs de radicaux libres, et d'autre part, une phase aqueuse contenant à une concentration de 50 +- 15 % en poids un mélange contenant pondéralement de 2 à 25 % de silice colloïdale et de 98 à 75 % d'acide acrylique dont 60 à 80 % sont salifiés par un métal alcalin, avec un rapport pondéral phase aqueuse sur phase huile compris entre 0,8 et 1,2, puis lorsque la réaction de polymérisation ...

PAPER COATING COMPOSITIONS

PROCESS FOR THE POLYMERIZATION OF THE (METH) ACRYLIC ACID SOLUTION, SOLUTIONS OF POLYMERS OBTAINED AND USES THEREOF.

RIDICALIZING PROCESS OF POLYMERIZATION CONTROLEE OF THE ACRYLIC ACID AND OF ITS SALTS, POLYMERS OF WEAK POLYDISPERSITY OBTAINED, AND THEIR APPLICATIONS

La présente invention concerne le secteur technique de la polymérisation de l'acide acrylique et de ses sels, plus particulièrement en solution, plus particulièrement par voie radicalaire contrôlée, l'utilisation des agents de transfert organo-soufrés correspondants, les polymères d'acide acrylique ainsi obtenus, présentant une très faible polydispersité PD (ou très faible Indice de polymolécularité IP, qui est un terme équivalent), et leurs applications dans l'industrie.

ACID BIO-ACRYLIQUE OF POLYMERIC RANK AND ITS MANUFACTORING PROCESS FROM GLYCEROL.

La présente invention concerne un acide « bio-acrylique » de grade polymère, ce grade étant défini par une teneur minimale en 14C et par les seuils limites en teneur des impuretés préjudiciables aux procédés de polymérisation, en particulier les aldéhydes totaux, la protoanémonine, l'anhydride maléique et les inhibiteurs de polymérisation non phénoliques. Un autre objet de l'invention est un procédé de fabrication de cet acide à partir de glycérol comme matière première. L'invention vise également l'utilisation de cet acide pour la fabrication de super absorbants ou pour la fabrication de polymères ou copolymères par polymérisation des dérivés dudit acide sous forme ester ou amide.

SUPER ABSORBENT POLYMER

고흡수성 수지의 제조 방법 및 이를 통해 제조된 고흡수성 수지

... 본 발명은 고흡수성 수지의 제조 방법에 관한 것으로, 본 발명에 따른 고흡수성 수지의 제조 방법은 3종의 중합 개시제를 사용함으로써 고흡수성 수지 내의 미반응 단량체의 함량을 낮출 수 있다는 특징이 있다.

POLYMERS PRODUCED BY USING SULPHUR COMPOUNDS IN THE FORM OF TRANSFER AGENTS FOR CONTROLLED RADICAL POLYMERISATION OF ACRYLIC ACID AND THE USE THEREOF

The invention relates to polymers produced by using sulphur compounds for a method for the controlled radical polymerisation of acrylic acid and/or acrylic acid with hydrosoluble monomers in water. Said invention also relates to the use of said polymers in the form of dispersing agents or grinding aid agents and/or aid agents for combined grinding of mineral materials in an aqueous suspension or in the form of dispersing agents directly incorporated into aqueous formulations containing mineral materials. The formulations of the thus obtained mineral materials are also disclosed. © KIPO & WIPO 2007 ...

흡수성수지 및 흡수성물품

... 흡수성능이 우수하고, 흡수체에 사용한 경우에 하중하에서의 흡수성능을 향상시킬 수 있는 흡수성수지 및 그 흡수성수지를 포함하는 흡수체를 이용한 흡수성물품을 제공한다. 본 발명에 따른 흡수성수지는, 수용성 에틸렌성 불포화 단량체를 내부 가교제의 존재하에서 중합시키고, 또한 후가교제로 후가교시킴으로써 얻어지는 흡수성수지로서, 4.14kPa 하중하에서의 생리 식염수 흡수능이 16mL/g 이상이고, 또한 당해 흡수성수지 전체의 비율에서 차지하는 150~850㎛ 입자의 질량 비율이 85질량% 이상이고, 더욱이 300~400㎛ 입자의 질량 비율이 20질량% 이상이며, 다음 식(I)로 표시되는 흡수용량 탄성지수가 68000 이상인 흡수성수지이다.

흡수성 수지 및 흡수성 물품

... 우수한 흡수성능을 가지는 동시에, 고온 고습하에 장기간 보관 전후에도 착색이 억제되는 흡수성 수지 및 그 흡수성 수지를 사용한 흡수성 물품을 제공한다. 본 발명에 따른 흡수성 수지는, 수용성 에틸렌성 불포화 단량체를 내부가교제의 존재하에서 중합시키고, 또한 후가교제로 후가교 함으로써 얻는 흡수성 수지로서, 이하의 성질을 만족하는 흡수성 수지이다. (A) 생리식염수 흡수능이 55g/g 이상, 4.14kPa 하중하에서의 생리식염수 흡수능이 15ml/g 이상, 또한 잔존 모노머 함량이 300ppm 이하, (B) 황색도가 5.0 이하, 또한, 70℃, 90% 상대습도의 환경하에서 10일간 방치한 후의 황색도의 변화율(ΔYI)이 10 이하 ...

uso de Ácidos poliacrÍlicos, e, suspensço aquosa finamente dividida de carbonato de cÁlcio.

Macrômero etilenicamente insaturado, estabilizador pré-formado, polióis de polímero, seus processos de preparação, e processos para preparação de poliuretano".

método para a produção contínua de polímeros aniônicos usando radicais

Resina absorvente de água adequada para absorção de lìquidos viscosos contendo polìmero, e núcleo absorvente e artigo absorvente usando a mesma

FRIABLE SHELL MICROCAPSULES, PROCESS FOR PREPARING THE SAME AND METHOD OF USE THEREOF

Photocuring/thermosetting ink jet composition and printed wiring board using same

A photocuring/thermosetting inkjet composition contains (A) a monomer having a (meth)acryloyl group and a thermosetting functional group in the molecule, (B) a photoreactive diluent other than the component (A) having a weight-average molecular weight of not more than 700, and c a photopolymerization initiator, and has a viscosity of not more than 150 mPa.s at 25 DEG C. A solder resist pattern is directly drawn on a printed wiring board by an inkjet printer using the above-mentioned composition, and the pattern is primarily cured by irradiation with an active energy beam and then further cured by heat.

POLY(ACRYLIC ACID) FROM BIO-BASED ACRYLIC ACID AND ITS DERIVATIVES

PRODUCTION METHOD AND METHOD FOR ENHANCING LIQUID PERMEABILITY OF WATER-ABSORBING RESIN

PRODUCTION METHOD AND METHOD FOR ENHANCING LIQUID PERMEABILITY OF WATER-ABSORBING RESIN5A method for the production of a water-absorbing resin is to be provided which permits enhancement and stabilization of property, for example, liquid permeability, of a water-absorbing resin by a simple and convenient method10 without requiring change of raw materials or expensive facility investment. The method comprises a polymerization step for polymerizing an aqueous solution of acrylic acid (or salt thereof) to obtain a hydrogel cross-linked polymer; a drying step for drying the hydrogel cross-linked polymer15 to obtain a water-absorbing resin powder; a classification step for classifying the water-absorbing resin powder; and a surface cross-linking step for surface cross-linking the water-absorbing resin powder before or after the classification step, wherein electricity is eliminated in20 the classification step.[No suitable figure] ...

CONTINUOUS ANIONIC POLYMERIZATION OF AT LEAST ONE (MET)ACRYLIC MONOMER FOR PREPARING POLYMERS WITH HIGH CONTENT OF SOLID MATTER

WATER-ABSORBING POLYMER STRUCTURE WITH IMPROVED COLOR STABILITY

The present invention relates to a method for the production of water-absorbing polymer structures, having the following method steps: I) provision of an aqueous monomer solution containing a polymerizable, monoethylenically unsaturated monomer (α1) having an acid group, or a salt of said monomer, optionally a monoethylenically unsaturated monomer (α2) which can polymerize with the monomer (α1), and optionally a cross linking agent (α3), ii) radical polymerization of the aqueous monomer solution, giving a polymer gel, iii) optionally pulverization of the polymer gel, iv) drying the optionally pulverized polymer gel, giving a water-absorbing polymer structure, v) optionally milling and sieving the water-absorbing polymer structure, and vi) surface cross linking of the optionally milled and sieved water-absorbing polymer structure, wherein a reducing agent containing a sulfonate, a salt of a sulfonate, or a mixture of a sulfonate and a salt of a sulfonate is added to I) the water-absorbing ...

METHOD FOR PRODUCING WATER ABSORBENT RESIN PARTICLES

Provided is a method for producing water absorbent resin particles comprising a polymerization step which includes mixing an oily liquid containing a hydrocarbon dispersion medium and a surfactant and an aqueous liquid containing an aqueous solvent and a water-soluble ethylenic unsaturated monomer, forming a suspension containing the oily liquid and the aqueous liquid dispersed in the oily liquid, and polymerizing the water-soluble ethylenic unsaturated monomer in the suspension. HLB of the surfactant is 6 or more, and the temperature of the suspension is maintained at 35°C or more from the start of mixing the oily liquid and aqueous liquid until the entire amount is mixed.

SYNTHESIS METHOD OF POLYCARBOXYLIC ACID WATER-REDUCING AGENT

A method for synthesizing concrete polycarboxylic acid water-reducing agent at room temperature under non-stirring situation is disclosed, which comprises dissolving reactive materials, initiator, chain transfer agent and promoter into a solvent, reacting on standing at 0-50° C.; then adding neutralizing agent at the end of reaction. The method makes use of oxidation-reduction system reacting at low temperature, and can adapt to a variety of reactive material monomers. It does not need to control feeding speed or provide extra heating, does not need to stir during the reaction, and remarkably simplifies operation steps in traditional process, which makes it possible to not only produce in large scale, but also produce in small scale in concrete construction site at any moment. 1. A producing method of polycarboxylic acid water-reducing agent characterized in that the method includes the following steps:step1, the chain transfer agent, accelerant and initiator and the monomers are dissolved in a solvent, wherein, the chain transfer agent and accelerant composes a redox system, then are kept standing for polymerizing at 0˜50° C. after uniform mixing;step2, neutralize by adding a neutralizer to ending the reaction.2. A method according characterized in that claim 1 , the feeding sequence is:the monomers with higher molecular weight are dissolved first, and then the monomers with lower weight, chain transfer agent and accelerant are added into the solvent, stirring to homogenization and then an initiator is added.3. A method according characterized in that claim 1 , the feeding sequence is: the monomers claim 1 , chain transfer agent and accelerant are added at the same time claim 1 , stirring and then the initiator is added.4. A method according characterized in that the weight ratio of the monomers claim 1 , initiator claim 1 , chain transfer agent and accelerant is 1:0.05˜5%: 0.01˜5%:0˜4%.5. A method according characterized in that the weight ratio of the monomers ...

Method for Producing Polymers

The invention relates to a method for producing polymers which contain (meth)acrylate salt units by radical polymerization of (meth)acrylate salt and optionally other monomers in an aqueous medium, using a supersaturated aqueous solution of (meth)acrylate salt. The highly concentrated reaction mixtures so obtained are characterized by a high solid content and increased space-time yield.

Process for the production of methacrylic acid and its derivatives and polymers produced therefrom

A process for the production of methacrylic acid is described. The process comprises the base catalysed decarboxylation of at least one or a mixture of dicarboxylic acids selected from itaconic, citraconic or mesaconic acid. The decarboxylation is carried out in the range greater than 240 and up to 275° C. to provide high selectivity. The methacrylic acid product may be esterified to produce an ester. A method of preparing polymers or copolymers of methacrylic acid or methacrylic acid esters using the process is also described. Optionally, the process may be preceded with a decarboxylation and, if necessary, a dehydration step on a source of pre-acid such as citric acid or isocitric acid.

Ionic hydrophilic high molecular weight redox polymers for use in enzymatic electrochemical-based sensors

Ionic hydrophilic high molecular weight redox polymers for use in enzymatic electrochemical-based sensors include a hydrophilic polymer (such as a hydrophilic polymer backbone) with ionic portions (e.g., cationic monomers incorporated in the hydrophilic polymer backbone) and a plurality of attached redox mediators. The redox mediators can be, for example, covalently attached to the hydrophilic polymer in a pendant manner. An exemplary cationic hydrophilic high molecular weight redox polymer is synthesized by co-polymerization of a hydrophilic acrylamide monomer, [2-(acryloyloxy)ethyl]trimethyl ammonium chloride and vinyl ferrocene.

Hardmask

Compositions containing certain organometallic oligomers suitable for use as spin-on, metal hardmasks are provided, where such compositions can be tailored to provide a metal oxide hardmask having a range of etch selectivity. Also provided are methods of depositing metal oxide hardmasks using the present compositions.

High solids preparation of crosslinked polymer particles

A process for preparing crosslinked polymer particles at high solids levels (i.e., >40 wt %). Also provided is a method for predicting whether a selection of reaction conditions for preparing crosslinked polymer particles will exhibit a potential for forming a gel and a method for predicting whether a selection of reaction conditions will or will not result in the formation of a gel.

Rate of absorbency of substrates containing in-situ polymerized monomers

An improvement in a process for producing an absorbent composite wherein a solution of acrylic or methacrylic acid salts are applied to a substrate and irradiated to form a water swellable polymer in-situ within such substrate. The component comprises saturating the irradiated substrate with an aqueous liquid and then drying to a moisture content of less than 20 percent by weight whereby the dried substrate exhibits rapid absorption properties.

Water-swellable hybrid material with inorganic additives and method of Producing same

The present invention relates to a water-swellable material comprising an inherently crosslinked polymer matrix and inorganic solid particles bound therein with a time-dependent swelling behavior that corresponds to a water uptake of at least 7.5 times the inherent weight of the hybrid material within one hour, as well as the applications thereof. The present invention further relates to a method for manufacture of such a water-swellable hybrid material.

Multi-functional (meth) acrylate compound, photocurable resin composition and article

A multi-functional (meth)acrylate compound containing at least three F atoms and at least three Si atoms per molecule is provided. A photocurable resin composition comprising the compound can endow support substrates with antifouling properties with respect to organic stains such as oil mist and fingerprints, without detracting from surface mar resistance.

Water-absorbent resin, hydropolymer, process for producing them, and uses of them

The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.

Method For Producing Super Absorbent Polymer And Super Absorbent Polymer

The present invention relates to a super absorbent polymer having more improved absorbency under pressure and liquid permeability, and a method for producing the same. The super absorbent polymer comprises a base polymer powder including a cross-linked polymer of a monomer containing a water-soluble ethylenically unsaturated compound or its salt; and a surface cross-linked layer that is formed on the base polymer powder and is further cross-linked from the cross-linked polymer, wherein a glass hollow particle having a micron-scale particle size is included on the surface cross-linked layer.

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.

Resin, resist composition and method for producing resist pattern

A resin having a structural unit derived from a compound represented by the following formula (I), wherein R1, A1 and ring X1 are as defined in the instant specification: ...

Water-absorbent resin, hydropolymer, process for producing them, and uses of them

The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.

Superabsorbent polymer composition and method for preparing the same

The present invention relates to superabsorbent polymer and a method for preparing the same. The present invention can provide a superabsorbent polymer in which a hydrophobic material having an HLB of 0-6, a hydrophilic polymer and a surface cross-linking agent are mixed into a base resin, thereby having improved rewetting characteristics and permeability through surface-modification of the base resin.

Water absorbent resin production method, water absorbent resin, and usage thereof

A method for producing a water absorbent resin by (i) polymerizing a monomer including an unsaturated monomer containing a carboxyl group, in the presence of an internal cross-linking agent (A) having two or more radical polymerizable unsaturated groups and in the presence of a non-polymeric internal cross-linking agent (B) having two or more functional groups each allowing formation of an ester bond or an amide bond by reacting with a carboxyl group, while crushing a cross-linked polymer hydrogel; and (ii) drying the cross-linked polymer hydrogel of step (i), wherein: an amount of the internal cross-linking agent (A) is 0.01 mol % or more and 0.2 mol % or less relative to an amount of the unsaturated monomer containing a carboxyl group, and a molar ratio (B)/(A) of the internal cross-linking agent (A) and the non-polymeric internal cross-linking agent (B) is 0.01 or more and 1.8 or less.

Resin, resist composition and method for producing resist pattern

A resin having a structural unit derived from a compound represented by the following formula (I), wherein R 1 , A 1 and ring X 1 are as defined in the instant specification:

Method for manufacturing carboxyl group-containing water-soluble polymer

In manufacturing of a carboxyl group-containing water-soluble polymer by a precipitation polymerization method, a method which can improve production efficiency with increasing practicality continuously adds a monomer solution wherein a monomer component containing an α,β-unsaturated carboxylic acid is dissolved in an inert solvent in a concentration of 20 to 50% by volume to an inert solvent charged in a reaction vessel. In this case, the amount of the inert solvent charged in the reaction vessel is set so that the concentration of the monomer component in the total amount summed up with the monomer solution is 10 to 24% by volume, and the time period until completion of continuous addition of the total amount of the monomer solution is set so that the conversion of the monomer component at the time of completion of addition of the total amount of the monomer solution is 60% or more. The monomer component may contain a polymerizable compound having two or more ethylenically unsaturated groups.

Polyacrylic acid (salt), polyacrylic acid (salt)-based water-absorbing resin, and process for producing same

A polyacrylic acid (salt), or a polyacrylic acid (salt)-based water-absorbing resin, contains a tracer for detecting various troubles in the water-absorbing resin during the period from the production of the water-absorbing resin to the use and discard thereof by a consumer. The polyacrylic acid (salt)-based water-absorbing resin has a stable carbon isotope ratio, as determined by accelerator mass spectrometry, of less than −20% and a radioactive carbon content of 1.0×10 −14 or mole. The polyacrylic acid (salt)-based water-absorbing resin has: a CRC of 10 [g/g] or mole; an AAP of 20 [g/g] or mole; an Ext of 35 wt. % or less; a content of residual monomers of 1,000 ppm or less; a PSD in which the proportion of particles having a particle diameter of 150 μm or larger but less than 850 μm is 90 wt. % or more; and an FSR of 0.15 [g/g/s] or more.

Aqueous poly(meth)acrylic acid-based polymer solution

An aqueous solution containing a poly(meth)acrylic acid-based polymer which shows excellent dispersibility for inorganic substances, satisfactory long-term dispersibility, and a favorable color is provided. The aqueous solution of the present invention is an aqueous solution comprising a poly(meth)acrylic acid-based polymer, the poly(meth)acrylic acid-based polymer including carboxyl groups, wherein in 100 mol % of the carboxyl groups, 30 to 85 mol % of the carboxyl groups are in an alkali metal salt form of the carboxyl groups, and 15 to 70 mol % of the carboxyl groups are in an acid form of the carboxyl groups, the poly(meth)acrylic acid-based polymer containing a phosphorus-containing group, the poly(meth)acrylic acid-based polymer having a weight average molecular weight of 2000 to 9000, the aqueous poly(meth)acrylic acid-based polymer solution having a concentration of inorganic anions, each including a sulfur or phosphorus atom, of 1000 to 10000 ppm relative to the aqueous poly(meth)acrylic acid-based polymer solution.

Method for producing a water-absorbent resin

A method for producing a water-absorbent resin comprising at least two stages of reversed-phase suspension polymerization, wherein the first stage of the at least two stages of reversed-phase suspension polymerization comprises the following steps of: (A) performing a primary dispersion by stirring to mix in the absence of surfactants an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a hydrophilic polymeric dispersion agent with a petroleum hydrocarbon dispersion medium in which a hydrophobic polymeric dispersion agent dissolves or disperses; (B) further performing a secondary dispersion by adding a surfactant to the resultant dispersion liquid; and (C) performing a polymerization by using a water-soluble radical polymerization initiator to obtain a water-absorbent resin as particles in a hydrous gel state which disperse in the petroleum hydrocarbon dispersion medium, and a water-absorbent resin obtained by the method.

Method for producing a water-absorbent resin

A method for producing a water-absorbent resin by performing a reversed-phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a petroleum hydrocarbon dispersion medium, comprising the following steps of: (A) performing a primary dispersion in the absence of surfactants by adding an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a hydrophilic polymeric dispersion agent to a petroleum hydrocarbon dispersion medium in which a hydrophobic polymeric dispersion agent was heat-dispersed or heat-dissolved, under stirring; (B) further performing a secondary dispersion by adding a surfactant to a dispersion liquid obtained after the primary dispersion; and (C) performing the reversed-phase suspension polymerization by using a radical polymerization initiator; and the water-absorbent resin obtained by the method.

Method for producing a water-absorbent resin

A method for producing a water-absorbent resin having a further reduced odor as compared with a water-absorbent resin obtained by a conventional method as well as a water-absorbent resin produced by the same method, by maintaining the addition rate V from the pouring nozzle for the aqueous solution of the water-soluble ethylenically unsaturated monomer in a polymerization reaction tank not more than 0.30 [min −1 ], in the first stage polymerization step which is within the step of the conventional method upon performing multi-stages such as two or more stages of reversed-phase suspension polymerizations in a method for producing a water-absorbent resin, and thereby by being able to reduce the amount of the petroleum hydrocarbon dispersion medium remaining in the above water-absorbent resin.

Structured Layers Composed of Crosslinked or Crosslinkable Metal-Organic Compounds, Shaped Bodies Containing Them as well as Processes for Producing Them

The invention relates to a process for producing a structured shaped body or a layer of this type from a precursor of a metal oxide or mixed oxide selected from among magnesium, strontium, barium, aluminum, gallium, indium, silicon, tin, lead and the transition metals.

PROCESS FOR PREPARING (METH)ACRYLIC ESTERS

The invention relates to a process for preparing (meth)acrylic esters by esterifying (meth)acrylic acid or transesterifying at least one (meth)acrylic ester with at least one compound comprising at least one OH group in the presence of a heterogeneous catalyst comprising at least one inorganic salt, wherein the esterification or transesterification is performed in the presence of 300 to 3000 ppm of water based on the total weight of the reaction mixture. 1. A process for preparing (meth)acrylic esters by esterifying (meth)acrylic acid or transesterifying at least one (meth)acrylic ester with at least one compound comprising at least one OH group in the presence of a heterogeneous catalyst comprising at least one inorganic salt , which comprises performing the esterification or transesterification in the presence of 300 to 3000 ppm of water based on the total weight of the reaction mixture.2. The process according to claim 1 , wherein the esterification or transesterification is performed in the presence of 400 to 2000 ppm of water based on the total weight of the reaction mixture.3. The process according to claim 1 , wherein the esterification or transesterification is performed in the presence of 500 to 1200 ppm of water based on the total weight of the reaction mixture.4. The process according to claim 1 , wherein the water comprises essentially HO.5. The process according to claim 1 , wherein the water claim 1 , in the case that a reaction mixture is made up in one process step claim 1 , is added completely or in portions in several process steps.6. The process according to claim 1 , wherein the water is supplied completely in one process step or in portions in several process steps when the reaction mixture is made up claim 1 , before or after addition of the heterogeneous catalyst.7. The process according to claim 1 , wherein the water is supplied completely in one process step before the addition of the heterogeneous catalyst claim 1 , preferably before the ...

Poly(Acrylic Acid) From Bio-Based Acrylic Acid And Its Derivatives

Bio-based glacial acrylic acid, produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof and having impurities of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof, is polymerized to poly(acrylic acid) or superabsorbent polymer using the same processes as petroleum-derived glacial acrylic acid. 1. A superabsorbent polymer composition produced from an acrylic composition , wherein said acrylic composition comprises an acrylic acid composition , wherein said acrylic acid composition consists of acrylic acid , acrylic acid derivatives , or mixtures thereof , wherein said acrylic acid composition comprises at least about 98 wt % acrylic acid , acrylic acid derivatives , or mixtures thereof , and wherein a portion of the remaining impurities in said acrylic acid composition is hydroxypropionic acid , hydroxypropionic acid derivatives , or mixtures thereof.2. The composition of claim 1 , wherein said hydroxypropionic acid claim 1 , hydroxypropionic acid derivatives claim 1 , or mixtures thereof is lactic acid claim 1 , lactic acid derivatives claim 1 , or mixtures thereof.3. The superabsorbent polymer composition of produced by the steps comprising: (i) said acrylic composition, and', '(ii) a solvent;', 'and wherein the pH of said pre-polymerization solution is less than about 6;, 'a. Preparing a pre-polymerization solution comprisingb. Combining an initiator with said pre-polymerization solution to produce a polymerization mixture;c. Polymerizing said polymerization mixture to produce a gel; andd. Drying said gel to produce the superabsorbent polymer composition.4. The composition of claim 3 , wherein the amount of said acrylic acid composition in said pre-polymerization solution is from about 5 wt % to about 95 wt %.5. The composition of claim 3 , wherein the amount of said initiator is from about 0.01% wt % to about 10 wt % claim 3 , based on the total amount of said acrylic acid composition in said pre- ...

PROCESS FOR THE PRODUCTION OF METHACRYLIC ACID AND ITS DERIVATIVES AND POLYMERS PRODUCED THEREFROM

A process for the production of methacrylic acid is described. The process comprises the base catalysed decarboxylation of at least one or a mixture of dicarboxylic acids selected from itaconic, citraconic or mesaconic acid. The decarboxylation is carried out in the range greater than 240 and up to 275° C. to provide high selectivity. The methacrylic acid product may be esterified to produce an ester. A method of preparing polymers or copolymers of methacrylic acid or methacrylic acid esters using the process is also described. Optionally, the process may be preceded with a decarboxylation and, if necessary, a dehydration step on a source of pre-acid such as citric acid or isocitric acid. 1. A process for the production of methacrylic acid by the base catalysed decarboxylation of at least one dicarboxylic acid selected from itaconic , citraconic or mesaconic acid or mixtures thereof , wherein the decarboxylation is carried out at greater than 240 and up to 275° C.2. A process according to claim 1 , wherein the decarboxylation is in the temperature range between 245 and up to 275° C.3. A process according to claim 1 , wherein the dicarboxylic acid reactants and preferably the base catalyst are in aqueous solution.4. A process according to claim 1 , wherein the decarboxylation reaction is carried out at suitable pressures in excess of atmospheric pressure.5. A process according to claim 1 , wherein the base catalyst comprises a metal oxide claim 1 , hydroxide claim 1 , carbonate claim 1 , acetate (ethanoate) claim 1 , alkoxide claim 1 , hydrogencarbonate or salt of a decomposable di- or tri-carboxylic acid claim 1 , or a quaternary ammonium compound of one of the above claim 1 , or one or more amines.6. A process according to claim 1 , wherein the base catalyst is selected from one or more of the following: LiOH claim 1 , NaOH claim 1 , KOH claim 1 , Mg(OH) claim 1 , Ca(OH) claim 1 , Ba(OH) claim 1 , CsOH claim 1 , Sr(OH) claim 1 , RbOH claim 1 , NHOH claim 1 , LiCO ...

METHOD FOR PRODUCING POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN POWDER

From a viewpoint of reduction in an out of spec product after surface crosslinking, particularly, when an alkylene carbonate compound is used as a surface crosslinking agent, influence by an air temperature is great, and it is necessary to reduce ethylene glycol which is produced as a byproduct, and there is provided a process for producing a polyacrylic acid (salt)-based water absorbent resin powder, comprising 138-. (canceled)39. A method for producing a polyacrylic acid (salt)-based water absorbent resin powder , comprisinga step of polymerizing an aqueous acrylic acid (salt)-based monomer solution,a step of drying the resulting polymer,an optional pulverization and•classification step, anda surface crosslinking step,wherein in the surface crosslinking step,(1) a surface crosslinking agent comprising an alkylene carbonate compound and a polyhydric alcohol compound is mixed into a water absorbent resin powder, the mixture is heat-reacted and, further, simultaneously with, or separately from the mixing, an ion reactive surface crosslinking agent is mixed, and/or(2) mixing treatment of mixing a surface crosslinking agent solution into a water absorbent resin powder containing at least one or more kinds of ion reactive surface crosslinking agents is performed two or more times.40. The method according to claim 39 , wherein an internal gas bubble ratio of a water absorbent resin powder before a surface crosslinking step is 0.5% or more.41. The method according to claim 39 , wherein an aqueous surface crosslinking agent solution comprising at least an alkylene carbonate compound claim 39 , a polyhydric alcohol compound and water is prepared by heating the alkylene carbonate compound or the polyhydric alcohol compound in advance and claim 39 , thereafter claim 39 , mixing the alkylene carbonate compound or the polyhydric alcohol compound with water claim 39 , and the aqueous surface crosslinking agent solution is mixed into the water absorbent resin powder.42. The ...

PROCESS FOR PRODUCING WATER-ABSORBING POLYMER PARTICLES

The invention relates to a process for producing water-absorbing polymer particles, comprising handling water-absorbing polymer particles in intermediate silos, storage silos and/or big bag filing stations that are connected with vent lines having a mitered joint. 1. A process for producing water-absorbing polymer particles , comprising polymerization of a monomer solution or suspension , comprisinga) at least one ethylenically unsaturated monomer which bears an acid group and may be at least partly neutralized,b) at least one crosslinker,c) at least one initiator,d) optionally one or more ethylenically unsaturated monomer copolymerizable with the monomer mentioned under a) ande) optionally one or more water-soluble polymer,drying, grinding, and classifying the resulting polymer gel, optionally thermally postcrosslinking, handling water-absorbing polymer particles in intermediate silos, storage silos, and/or big bag filing stations, wherein at least one vent line of at least one intermediate silo, storage silo, and/or big bag filing station has at least one bend for changing the direction of the vent line from upward to downward, the bend has a mitered joint and a slope upward and downward each of not less than 30° based on the horizontal.2. The process according to claim 1 , wherein the slope upward and downward of the bend is not less than 60° based on the horizontal.3. The process according to claim 1 , wherein the bend has a shape of a turned up V.4. The process according to claim 1 , wherein the vent line is thermally insulated.5. The process according to claim 1 , wherein the vent line is external heated.6. The process according to claim 1 , wherein the water-absorbing polymer particles in the intermediate silos claim 1 , storage silos claim 1 , and/or big bag filing stations are covered with dry air.7. The process according to claim 1 , wherein the proportion of acrylic acid in the total amount of ethylenically unsaturated monomer a) is at least 95 mol %.8. ...

Method for polymerisation of (meth)acrylic acid in solution, polymer solutions obtained and their uses

The present invention relates to a new solvent-free preparation method of a (meth)acrylic acid polymer in solution, where said polymer has a molecular weight less than 8,000 g/mol and a polydispersity IP index between 2 and 3 by radical polymerisation, the polymers obtained by this means, and their applications in industry.

WATER-ABSORBENT RESIN AND ABSORBENT ARTICLE

There is provided a water-absorbent resin that exhibits a high liquid-retention capacity under a load and a small amount of re-wet even when it is used in an absorbent material having a low proportion of hydrophilic fibers. 1. A water-absorbent resin comprising a polymer of a water-soluble ethylenically unsaturated monomer , wherein when a cross-sectional image of the water-absorbent resin is observed using X-ray computed tomography , the water-absorbent resin has a ratio of the area of cavity portions (cavity area ratio) in the cross-sectional image of 10% or less , as calculated according to Equation (I):{'br': None, 'i': B', 'A', 'B, 'cavity area ratio [%]={total cross-sectional area of cavity portions () in the water-absorbent resin/(total cross-sectional area of resin portions () in the water-absorbent resin+total cross-sectional area of cavity portions () in the water-absorbent resin))}×100\u2003\u2003(I).'}2. The water-absorbent resin according to claim 1 , wherein the water-absorbent resin has a physiological saline-retention ratio under a load of 73% or more.3. The water-absorbent resin according to claim 1 , wherein the water-absorbent resin has a substantially spherical shape or a shape in which particles having a substantially spherical shape are aggregated.4. The water-absorbent resin according to claim 1 , which is used in an absorbent material designed to have a ratio of hydrophilic fibers of 50% by mass or less in the absorbent material.5. The water-absorbent resin according to claim 2 , wherein the water-absorbent resin has a substantially spherical shape or a shape in which particles having a substantially spherical shape are aggregated.6. The water-absorbent resin according to claim 2 , which is used in an absorbent material designed to have a ratio of hydrophilic fibers of 50% by mass or less in the absorbent material.7. The water-absorbent resin according to claim 3 , which is used in an absorbent material designed to have a ratio of hydrophilic ...

COATING COMPOSITION AND COATING FILM PREPARAED THEREFROM

The present invention relates to a coating composition and a coating film prepared therefrom, and more particularly, to a coating composition for preparing a coating film exhibiting more improved mechanical and optical properties together with self-healing properties and impact resistance; and to a coating film prepared therefrom. 1. A coating composition including:a first binder containing a hydrogen bonding functional group capable of forming multiple hydrogen bonds and a curable functional group in one molecule, a heat-curable or photo-curable second binder, a polymerization initiator and an organic solvent.2. The coating composition according to claim 1 , wherein the hydrogen bonding functional group includes at least functional group selected from the group consisting of OH group claim 1 , —OR group claim 1 , —NHgroup claim 1 , —NHR group claim 1 , —NRgroup claim 1 , —COOH group claim 1 , —COOR group claim 1 , —CONHgroup claim 1 , —CONRgroup claim 1 , —NHOH group claim 1 , and —NROR group; or at least one bond selected from the group consisting of —NHCO— bond claim 1 , —NRCO— bond claim 1 , —O— bond claim 1 , —NH— bond claim 1 , —NR— bond claim 1 , —COO— bond claim 1 , —CONHCO— bond claim 1 , —CONRCO— bond claim 1 , —NH—NH— bond claim 1 , —NR—NH— bond claim 1 , and —NR—NR— bond.3. The coating composition according to claim 1 , wherein the first binder is contained in an amount of 1 to 50 parts by weight based on 100 parts by weight of the sum of the first and second binders.4. The coating composition according to claim 1 , wherein the curable functional group includes at least one photo-curable functional group selected from the group consisting of a (meth)acrylate group claim 1 , a (meth)acryloyl group claim 1 , and a vinyl group; or at least one heat-curable functional group selected from the group consisting of an isocyanate group claim 1 , a hydroxyl group claim 1 , an epoxy group claim 1 , an alkoxy group claim 1 , a thiol group claim 1 , a melamine group ...

WATER-ABSORBENT RESIN, AND SOIL

Provided is a water-absorbent resin that quickly absorbs water, even in sandbag in which a large amount of the water-absorbent resin has been used, that does not easily form unswollen lump, and that has a high gel swelling volume when water is used to swell the water-absorbent resin. This water-absorbent resin is configured from a polymer of water-soluble ethylenic unsaturated monomers. The physiological-saline absorption capacity of the water-absorbent resin is 40-60 g/g. When a cross-sectional image of the water-absorbent resin is observed by x-ray computed tomography, the fraction of the area of the cross-sectional image that is hollow portions (the hollow area ratio of the cross-sectional image), as calculated on the basis of formula (I), is no more than 10%. (I) Hollow area ratio [%]={total cross-sectional area (B) of hollow portions of the water-absorbent resin/(total cross-sectional area (A) of resin portions of the water-absorbent resin+total cross-sectional area (B) of hollow portions of the water-absorbent resin)}×100%. 1. A water-absorbent resin comprising a polymer of a water-soluble ethylenically unsaturated monomer , wherein:a physiological-saline absorption capacity is 40 to 60 g/g, and {'br': None, 'cavity area ratio [%]={total cross-sectional area (B) of cavity portions in the water-absorbent resin/(total cross-sectional area (A) of resin portions in the water-absorbent resin+total cross-sectional area (B) of cavity portions in the water-absorbent resin)}×100. \u2003\u2003(I)'}, 'when a cross-sectional image of the water-absorbent resin obtained by X-ray computed tomography is observed, a ratio (cavity area ratio) as calculated by Equation (I) of an area of cavity portions in the cross-sectional image is 10% or more2. The water-absorbent resin according to claim 1 , wherein the water-absorbent resin has a granular shape claim 1 , a substantially spherical shape claim 1 , or a shape in which particles having a substantially spherical shape are ...

Systems and processes for polyacrylic acid production

Disclosed are systems and methods for the production of polyacrylic acid and superabsorbent polymers from ethylene oxidation to form ethylene oxide. Reacting the ethylene oxide with carbon monoxide to form to beta propiolactone (BPL) or polypropiolactone (PPL), or a combination thereof. An outlet configured to provide a carbonylation stream comprising the BPL or PPL, or a combination thereof and using one or more reactors to convert BPL to acrylic acid or to convert at least some of the BPL to PPL, and then to convert PPL to acrylic acid. An outlet configured to provide a PPL stream to a second reactor tm to convert at least some of the PPL to AA or a third reactor to convert at least some of the PPL to AA. The outlet configured to provide an AA stream to a fourth reactor to convert the AA to polyacrylic acid.

SILICONE COMPOSITIONS CONTAINING ACRYLATE CURE ACCELERATOR

Compositions are disclosed which include between about 0.05 to about 5 or less wt. % of at least one acrylate monomer based on the total weight of the composition. The acrylate monomer reduces the peak cure temperature, thereby accelerating the rate of cure, without sacrificing completeness of the cure or the release performance of the cured product. The addition of the acrylate monomer also enables a reduction in the amount of costly platinum catalyst required to effectively cure a composition. In addition to the acrylate monomer, the compositions also include a silicone base polymer, a crosslinking agent, and platinum catalyst. The cured compositions exhibit properties useful for incorporation into release liners, adhesive articles, medical products and gaskets. 1. A composition comprising:a) a silicone base polymer; andb) a cure accelerator, the cure accelerator comprising an acrylate monomer present in an amount between about 0.05 to about 5 wt. % based on the total weight of the composition.2. The composition of claim 1 , wherein the silicone base polymer is a vinyl functional silicone base polymer.3. The composition of claim 1 , wherein the silicone base polymer is present from between about 50 wt. % to about 95 wt. % of the total weight of the composition.4. The composition of claim 1 , wherein the composition is uncured.5. The composition of claim 1 , further comprising an O-vinyl ether compound.6. The composition of claim 5 , wherein the O-vinyl ether compound is selected from the group consisting of 1 claim 5 ,4 cyclohexanedimethanol divinyl ether claim 5 , butanedioldivinylether claim 5 , and dodecylvinylether.7. The composition of claim 5 , wherein the O-vinyl ether compound is present from between about 0.01 wt. % to about 10 wt. % of the total weight of the composition.8. The composition of claim 1 , wherein the acrylate monomer is selected from the group consisting of a mono- claim 1 , di- claim 1 , tri- claim 1 , or multifunctional acrylate monomer.9 ...

Absorption body and absorptive article

An absorber 10 contains water-absorbent resin particles 10a and a fibrous substance, a medium particle diameter of the water-absorbent resin particles 10a is 250 to 600 μm, the water-absorbent resin particles 10a contain small-diameter particles having a particle diameter of 180 μm or less, and a falloff rate of a mixture of the small-diameter particles and the fibrous substance when the mixture is subjected to shaking treatment for 10 minutes is 20% by mass or less.

Water-absorbing resin, and absorbent article

Provided is a water-absorbing resin that exhibits excellent absorption performance and a high permeation rate with respect to liquids to be absorbed, and that effectively reduces liquid leakages, even in an absorbent body using a large amount of the water-absorbing resin. The water-absorbing resin is formed from a polymer of a water-soluble ethylenically unsaturated monomer, and when a cross-sectional image of the water-absorbing resin obtained by X-ray computer tomography is observed, the ratio (cavity area ratio) as calculated by formula (I) of the area of cavity portions in the cross-sectional image is 2-10%. The liquid flow rate index as calculated by formula (II) when a physiological saline liquid column flow rate test is performed on the water-absorbent resin having a particle diameter of 250 to 500 μm at 37° C. is 5-20. (I) Cavity area ratio [%]={total cross-sectional area (B) of cavity portions in the water-absorbing resin/(total cross-sectional area (A) of resin portions in the water-absorbing resin+total cross-sectional area (B) of cavity portions in the water-absorbing resin)×100} (II) Liquid flow rate index={liquid flow rate (CPR2) during 10 second period between 50 seconds and 60 seconds after initiation of liquid flow/liquid flow rate (CPR1) during 10 second period after initiation of liquid flow}×100

Poly(Acrylic Acid) From Bio-Based Acrylic Acid And Its Derivatives

Bio-based glacial acrylic acid, produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof and having impurities of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof, is polymerized to poly(acrylic acid) or superabsorbent polymer using the same processes as petroleum-derived glacial acrylic acid.

Super Absorbent Polymer and Preparation Method for the Same

The present invention relates to super absorbent polymer and a method for preparing the same. According to the super absorbent polymer and preparation method for the same of the present invention, super absorbent polymer having improved rewet property and vortex time can be provided. 1. A super absorbent polymer comprising:base resin particles in which acrylic acid-based monomers having acid groups, of which at least a part is neutralized, and an internal cross-linking agent are cross-linked in the form of a cross-linked polymer;a surface modification layer formed on a surface of the base resin particles, in which the cross-linked polymer is additionally cross-linked by an epoxy-based surface cross-linking agent; andan inorganic filler,wherein the internal cross-linking agent comprises a poly(meth)acrylate-based first internal cross-linking agent and a polyol polyglycidyl ether-based second internal cross-linking agent at a weight ratio of the first internal cross-linking agent to the second internal cross-linking agent of 1:40 to 1:1200, andthe surface modification layer includes a hydrophobic material having a melting temperature (Tm) of 40 to 80° C., and a water solubility at 25° C. of 70 mg/L or less.2. The super absorbent polymer according to claim 1 , wherein the first internal cross-linking agent includes one or more of trimethylolpropane tri(meth)acrylate claim 1 , ethyleneglycol di(meth)acrylate claim 1 , polyethyleneglycol di(meth)acrylate claim 1 , propyleneglycol di(meth)acrylate claim 1 , polypropyleneglycol di(meth)acrylate claim 1 , butanediol di(meth)acrylate claim 1 , diethyleneglycol di(meth)acrylate claim 1 , hexanediol di(meth)acrylate claim 1 , triethyleneglycol di(meth)acrylate claim 1 , tripropyleneglycol di(meth)acrylate claim 1 , tetraethyleneglycol di(meth)acrylate claim 1 , dipentaerythritol pentaacrylate claim 1 , glycerin tri(meth)acrylate claim 1 , or pentaerythritol tetraacrylate.3. The super absorbent polymer according to claim 1 , ...

POLYMERIZATION INHIBITOR AND RETARDER COMPOSITIONS WITH AMINE STABILIZER

Described are compositions and methods for inhibiting polymerization of a monomer (e.g., styrene) composition, which use an N—O polymerization inhibitor, a quinone methide polymerization retarder, and an amine stabilizer having a primary and/or secondary amine group. In a mixture, the amine-based stabilizer can prevent antagonistic effects and can provide greater antipolymerant activity. In turn, the mixture inhibits apparatus fouling and improves the purity of monomer streams. 1. A composition for inhibiting monomer polymerization comprising:an inhibitor compound that comprises an N-to-O bond;a retarder compound that is a quinone methide; anda stabilizer compound comprising a primary or secondary amine group.2. The composition of wherein the stabilizer is an alkylamine that comprises a linear claim 1 , branched claim 1 , heterocyclic claim 1 , or cyclic alkyl group.3. The composition of claim 1 , wherein the stabilizer compound has at least 4 carbons claim 1 , has a number of carbons in the range of 6-24 claim 1 , or has a number of carbons in the range of 8-24.4. The composition of wherein the stabilizer compound is of formula RNH claim 3 , wherein Ris a linear claim 3 , branched claim 3 , or cyclic alkyl group of 4-24 claim 3 , 6-24 claim 3 , or 8-24 carbons.5. The composition of wherein the stabilizer compound is selected from the group consisting of hexylamine claim 4 , heptylamine claim 4 , ethylhexylamine claim 4 , octylamine claim 4 , nonylamine claim 4 , decylamine claim 4 , undecylamine claim 4 , and dodecylamine.6. The composition of wherein the stabilizer compound is of formula RNHR claim 1 , wherein Rand Rare independently selected from linear claim 1 , branched claim 1 , or cyclic alkyl groups of 1-23 carbon atoms with the proviso that the total number of carbon atoms in Rand Ris in the range of 4-24 claim 1 , 6-24 claim 1 , or 8-24 carbons.7. The composition of wherein the stabilizer compound is a cyclic secondary amine claim 1 , a heterocyclic ...

Compositions comprising benefit agent containing delivery particle

Compositions that include benefit agent delivery particles, the particles having a core and a shell encapsulating the core, the shell including certain acrylate-based polymers. Processes for making and using such compositions.

WATER ABSORBENT SHEET, ELONGATED WATER ABSORBENT SHEET, AND ABSORBENT ARTICLE

The present invention provides a water-absorbing sheet suitable for a hygienic material such as a disposable diaper. The water-absorbing sheet in accordance with an aspect of the present invention includes: a first base material; a second base material; and a particulate water-absorbing agent sandwiched between the first base material and the second base material, at least one of the first base material and the second base material being a water-permeable base material, and at least part of the particulate water-absorbing agent satisfying the following physical properties (1), (2), and (3): 1. A water-absorbing sheet comprising:a first base material;a second base material; anda particulate water-absorbing agent sandwiched between the first base material and the second base material,at least one of said first base material and said second base material being a water-permeable base material, and (1) a centrifuge retention capacity (CRC) is 30 g/g to 50 g/g;', '(2) a mass average particle diameter (D50) is 200 μm to 600 μm; and', {'br': None, 'i': DRC', 'DRC', 'D, 'index=(49−5 min)/(50/1000)\u2003\u2003Formula (a).'}, '(3) a DRC index defined by the following Formula (a) is 43 or less], 'at least part of said particulate water-absorbing agent satisfying the following physical properties (1), (2), and (3)2. The water-absorbing sheet according to claim 1 , wherein:said particulate water-absorbing agent contains a first particulate water-absorbing agent and a second particulate water-absorbing agent, the first particulate water-absorbing agent being localized in the vicinity of the first base material and the second particulate water-absorbing agent being localized in the vicinity of the second base material; andsaid second particulate water-absorbing agent satisfies the conditions (1), (2), and (3) above.3. The water-absorbing sheet according to claim 2 , wherein:said first particulate water-absorbing agent satisfies the conditions (1) and (2) above; andsaid first ...

WATER-ABSORBING RESIN PARTICLES

Disclosed are water-absorbing resin particles having a repulsion rate represented by Formula (1) of 5% or more: 1. Water-absorbing resin particles having a repulsion rate of 5% or more represented by Formula (1):{'br': None, 'i': h', '−h', 'h, 'sub': 3', '2', '1, '()/×100 (%) \u2003\u2003(1)'}{'sup': '3', 'sub': 3', '2, 'wherein in Formula (1), when a cylinder with an inner diameter of 25.4 mm, which has a mesh-like bottom onto which 0.2 g of the water-absorbing resin particles are sprinkled, is placed in a container having ion exchange water in an amount of 30 times a mass of the water-absorbing resin particles such that the water-absorbing resin particles absorb the ion exchange water, hi represents a free swelling height (mm) of the water-absorbing resin particles after 1 minute from initiation of the water absorption, h2 represents a height (mm) of the water-absorbing resin particles after a load of 1.3×10Pa is applied to the water-absorbing resin particles for 1 minute after 1 minute from initiation of the water absorption, and hrepresents a height (mm) of the water-absorbing resin particles after 1 minute from release of the load applied when measuring h.'}2. The water-absorbing resin particles according to claim 1 , wherein an absorption rate of physiological saline by a vortex method is 10 seconds or less.3. The water-absorbing resin particles according to claim 1 , wherein a retention capacity of physiological saline is 15 to 39 g/g. The present invention relates to water-absorbing resin particles.An absorbent containing water-absorbing resin particles is used in sanitary goods such as paper diapers and sanitary napkins. A conventional absorbent is generally a mixture of water-absorbing resin particles and fibrous materials such as pulp. An elasticity or a flexibility of the conventional absorbent is highly dependent on the amount of pulp contained in the absorbent.[Patent Literature 1] JP 2017-1.79658 AIn recent years, the trend is toward thinner sanitary ...

PROCESS FOR PRODUCING WATER-ABSORBING RESIN PARTICLES

The present invention provides a method for producing water-absorbent resin particles that has a low stirring load, and can produce water-absorbent resin particles having a particle diameter within a specific range, with high productivity. The method for producing water-absorbent resin particles comprises adding an ethylenically unsaturated monomer all at once to a hydrocarbon dispersion medium mixed with a surfactant to perform reversed phase suspension polymerization, wherein the reversed phase suspension polymerization is performed in one step, or two or more steps, the surfactant is at least one selected from the group consisting of polyoxyethylene alkyl ether phosphates, alkali metal salts of polyoxyethylene alkyl ether phosphates, and alkaline earth metal salts of polyoxyethylene alkyl ether phosphates, and the surfactant has an HLB of 9 to 15. 1. A method for producing water-absorbent resin particles comprising:adding an ethylenically unsaturated monomer all at once to a hydrocarbon dispersion medium mixed with a surfactant to perform reversed phase suspension polymerization, whereinthe reversed phase suspension polymerization is performed in one step, or two or more steps,the surfactant is at least one selected from the group consisting of polyoxyethylene alkyl ether phosphates, alkali metal salts of polyoxyethylene alkyl ether phosphates, and alkaline earth metal salts of polyoxyethylene alkyl ether phosphates, andthe surfactant has an HLB of 9 to 15.2. The method for producing water-absorbent resin particles according to claim 1 , wherein the surfactant is a polyoxyethylene alkyl ether phosphate sodium salt.3. The method for producing water-absorbent resin particles according to claim 1 , wherein the surfactant is used in an amount of 0.1 to 3.0 parts by mass per 100 parts by mass of the ethylenically unsaturated monomer.4. The method for producing water-absorbent resin particles according to claim 1 , wherein the ethylenically unsaturated monomer is at ...

Water-absorbent resin particles

Disclosed are water-absorbent resin particles comprising a crosslinked polymer comprising a monomer unit derived from a water-soluble ethylenically unsaturated monomer, wherein an initial swelling force as measured according to a swelling force test conducted by a predetermined method is 8 N or more, and further, a ratio of the particles having a particle diameter of more than 250 μm and 850 μm or less is 70% by mass or more and a ratio of the particles having a particle diameter of 250 μm or less is 20% by mass or less, with respect to the total amount of the water-absorbent resin particles.

Composite Separator and Electrochemical Device Including the Same

Provided are a composite separator including a coating layer including inorganic particles and a binder formed on a porous substrate, which has improved coatability and improved thermal shrinkage, and a lithium secondary battery using the same. 1. A composite separator comprising:a porous substrate; anda coating layer comprising inorganic particles and a binder formed on one surface or both surfaces of the porous substrate,wherein the binder comprises a copolymer comprising: (a) a unit derived from (meth)acrylamide; (b) a unit derived from any one or more selected from (b-1) (meth)acrylic acid and (b-2) a (meth)acrylic acid salt; and (c) a unit derived from an addition-polymerizable monomer containing a sulfonate.3. The composite separator of claim 2 , wherein R claim 2 , R claim 2 , and Rare hydrogen claim 2 , and Ris methyl.4. The composite separator of claim 1 , wherein the copolymer further comprises a repeating unit derived from N-methylolacrylamide.5. The composite separator of claim 1 ,wherein the copolymer comprises: 49 to 98 mol % of (a), 1 to 50 mol % of (b-1)+(b-2), and 0.0001 to 1 mol % of (c), and(b-1):(b-2) is at a mole ratio of 0:100 to 10:90.6. The composite separator of claim 5 ,wherein the copolymer comprises (b-1) and (b-2) at a mole ratio of 1:99 to 2:98.7. The composite separator of claim 1 , wherein the binder further comprises a crosslinking agent.8. The composite separator of claim 7 , wherein the crosslinking agent is any one or a mixture of two or more selected from glycol-based compounds and polyol compounds.9. The composite separator of claim 1 , wherein the copolymer has a weight average molecular weight of 500 claim 1 ,000 to 2 claim 1 ,000 claim 1 ,000 g/mol.10. The composite separator of claim 1 , wherein a content ratio of the inorganic particles:the binder is 80:20 to 99.9:0.1 by weight.11. The composite separator of claim 1 , wherein the composite separator has a thermal shrinkage rate both in a machine direction (MD) and in a ...

POLYMERIC EMULSION CONTAINING AMPHOTERIC SURFACTANT AND ITS APPLICATION IN ARCHITECTURAL PRIMERS

A method for forming an acrylic emulsion includes a step of forming pre-emulsion by combining a monomer composition with an amphoteric surfactant in water and then polymerizing the pre-emulsion by combining the pre-emulsion with a radical initiator in a reactor to form a reaction mixture. The monomer composition includes one or more monomers selected from the group consisting of (meth)acrylic acid monomers and (meth)acrylic monomers, and combinations thereof. An acrylic emulsion formed by the method is also provided.

Stimuli-responsive interpolymer complex coated hollow silica vesicles

A porous hollow silica particle with an interpolymer complex immobilized thereon is provided. The interpolymer complex comprises a first polymer immobilized to a surface of the silica particle, and a second polymer complexed with the first polymer. Pharmaceutical compositions comprising the silica particle, and methods of forming the silica particle are also provided.

STABILIZED PEROVSKITE QUANTUM DOT MATERIAL

Described herein are materials comprising (1) a monomer or a polymer; (2) perovskite quantum dots interspersed in the monomer or the polymer, each of the perovskite quantum dots independently having the formula: 2. The material of claim 1 , wherein the material comprises the halide-based additive claim 1 , wherein the halide-based additive comprises a metal halide salt claim 1 , an organic halide salt claim 1 , or a combination thereof.38-. (canceled)9. The material of claim 2 , wherein the metal halide salt comprises MgBr claim 2 , CaBr claim 2 , AlBr claim 2 , ZnBr claim 2 , or a combination thereof.10. The material of claim 2 , wherein the metal halide salt comprises LiBr claim 2 , NaBr claim 2 , KBr claim 2 , RbBr claim 2 , CsBr claim 2 , or a combination thereof.1112-. (canceled)13. The material of claim 2 , wherein the organic halide salt comprises an ammonium salt claim 2 , a sulfonium salt claim 2 , a phosphonium salt claim 2 , or a combination thereof.14. (canceled)15. The material of claim 13 , wherein the ammonium salt comprises Tetraoctylammonium bromide claim 13 , Didodecyldimethylammonium bromide claim 13 , Tetrabutylammonium bromide claim 13 , Tetraoctylammonium bromide claim 13 , Hexadecyltrimethylammonium bromide claim 13 , Trimethyloctadecylammonium bromide claim 13 , Myristyltrimethylammonium bromide claim 13 , or a combination thereof claim 13 , and wherein the sulfonium salt comprises dimethyl(octyl)sulfonium bromide; (Ethoxycarbonylmethyl)dimethylsulfonium bromide; Sulfonium claim 13 , dimethyl(2-phenylethyl)- claim 13 , bromide; Benzyl(diethyl)sulfonium bromide; Sulfonium claim 13 , dimethyl[1-(4-methylphenyl)ethyl]- claim 13 , bromide; Sulfonium claim 13 , [1-(dimethylamino)-4-pentenylidene]-2-propenyl- claim 13 , bromide; Sulfonium claim 13 , [1-(dimethylamino)-3-methyl-4-pentenylidene]-2-propenyl- claim 13 , bromide; or a combination thereof.1618-. (canceled)19. The material of claim 13 , wherein:the phosphonium salt is a phosphonium ...

GEL INCLUDING CONDENSATION PRODUCT OF ORGANIC SILICON COMPOUND

The present invention provides a gel containing a crosslinked polymer having at least one selected from the group consisting of an acidic dissociative group, an acidic dissociative group in a salt form, and a derivative group of an acidic dissociative group, and a condensate of a compound represented by the following formula (I): Si{R—N(R)(R)}(OR)(OR)(R) (wherein each group is as defined in the DESCRIPTION). 1. A gel comprising a crosslinked polymer having at least one selected from the group consisting of an acidic dissociative group , an acidic dissociative group in a salt form , and a derivative group of an acidic dissociative group , and a condensate of a compound represented by the following formula (I):{'br': None, 'sup': 1', '2', '3', '4', '5', '6, 'Si{R—N(R)(R)}(OR)(OR)(R) \u2003\u2003(I)'} [{'sup': 1', '7', '7, 'sub': 2', '2', '2, 'Ris an alkylene group optionally having substituent(s), a cycloalkanediyl group optionally having substituent(s), an arenediyl group optionally having substituent(s), or a divalent group optionally having substituent(s) and being a combination of at least two selected from the group consisting of an alkylene group, a cycloalkanediyl group and an arenediyl group, and one or more —CH— excluding —CH— adjacent to Si and —CH— adjacent to N in said alkylene group and cycloalkanediyl group is/are optionally replaced by at least one selected from the group consisting of —O— and —NR— wherein Ris a hydrogen atom, an alkyl group optionally having substituent(s), a cycloalkyl group optionally having substituent(s), an aryl group optionally having substituent(s) or an aralkyl group optionally having substituent(s),'}, {'sup': 2', '3, 'Rand Rare each independently a hydrogen atom, an alkyl group optionally having substituent(s), a cycloalkyl group optionally having substituent(s), an aryl group optionally having substituent(s), or an aralkyl group optionally having substituent(s), or they are bonded to each other to form, together with the ...

PROGRAMMABLE MIP CATCH AND RELEASE TECHNOLOGY

Programmable molecular imprinted polymers (MIPs) that have modified binding site kinetics for target imprintable entities (TIEs) that operate to control the adsorption, binding, release and equilibrium distribution of related materials into and out of the MIPs, which are useful for the controlled adsorption, controlled release and control of concentrations of such materials in media including gases, liquids, fluids, biological systems, solutions and other environments. When a collective plurality of the MIPs with modified binding site kinetics are combined, the resulting MIP systems can be tailored to exhibit pseudo zero- and first-order kinetics, as well as higher kinetic profiles, and when further combined with time-delay functionality, can be tailored to exhibit delayed uptake and release, ramped uptake and release of materials, step functions, polynomial, geometric, exponential and other unique kinetic profiles of material exchange between the novel MIPs and a fluid media that are not readily achievable by other means. 1. A polymeric matrix comprising:{'sub': 'm', 'a plurality of binding sites within a molecularly imprinted polymer (MIP) that exhibit at least one average associative binding constant (k) with respect to a selected material (m);'}wherein the magnitude of said average associative binding constant is significantly different than that of the average equilibrium associative binding constant exhibited by said polymer matrix for a reference target imprinted entity (TIE) used as the template forming entity in the formation of said plurality of binding sites within said MIP; andwherein said plurality of binding sites operate to enable the controlled capture and the controlled release of said selected material, and combinations thereof, when in contact with a fluid media.2. The polymeric matrix of claim 1 , wherein said molecularly imprinted polymer is formed by means of polymerizing a plurality of monomers into a three dimensional matrix in the presence ...

Programmable mip catch and release technology

Programmable molecular imprinted polymers (MIPs) that have modified binding site kinetics for target imprintable entities (TIEs) that operate to control the adsorption, binding, release and equilibrium distribution of related materials into and out of the MIPs, which are useful for the controlled adsorption, controlled release and control of concentrations of such materials in media including gases, liquids, fluids, biological systems, solutions and other environments. When a collective plurality of the MIPs with modified binding site kinetics are combined, the resulting MIP systems can be tailored to exhibit pseudo zero- and first-order kinetics, as well as higher kinetic profiles, and when further combined with time-delay functionality, can be tailored to exhibit delayed uptake and release, ramped uptake and release of materials, step functions, polynomial, geometric, exponential and other unique kinetic profiles of material exchange between the novel MIPs and a fluid media that are not readily achievable by other means.

Photocurable Sealing Material

A photocurable sealing material comprising at least a polythiol compound as a first component, wherein, in the case where the photocurable sealing material is used to produce two sheets having a thickness of 1 mm, a width of 25 mm, and a length of 200 mm, the two sheets are photocured by irradiation with an ultraviolet ray, then the photocured sheets are laminated, and the laminate is subjected to a load of 10 kg for 10 seconds, an action of causing the lamination interface between the two sheets to disappear is exhibited, and the self-adhesion strength in a T-type peel test is 5 N/25 mm or more when the sheets are pulled at a peel speed of 300 mm/min. 16-. (canceled)7. A photocurable sealing material comprising at least a polythiol compound as a first component , whereinin the case where the photocurable sealing material is used to produce two sheets having a thickness of 1 mm, a width of 25 mm, and a length of 200 mm, the two sheets are photocured by irradiation with an ultraviolet ray, then the photocured sheets are laminated, and the laminate is subjected to a load of 10 kg for 10 seconds, an action of causing the lamination interface between the two sheets to disappear is exhibited, and the self-adhesion strength in a T-type peel test is 5 N/25 mm or more when the sheets are pulled at a peel speed of 300 mm/min.8. The photocurable sealing material according to claim 7 , wherein the self-adhesion strength is 1000 N/25 mm or less when the sheets are pulled at a peel speed of 300 mm/min.9. The photocurable sealing material according to claim 7 , wherein the sheets after the photocuring have a Shore 00 hardness of 5 to 100 under an environment of a temperature of 23° C. and a relative humidity of 50 to 60% RH.10. The photocurable sealing material according to claim 7 , whereinthe photocurable sealing material comprises, in addition to the first component, a second component and a third component and further comprises a fourth component and/or a fifth component,the ...

STIMULI RESPONSIVE MATERIALS, METHODS OF MAKING, AND METHODS OF USE THEREOF

A mechanochromic system comprising a first inorganic/polymer composite layer; and a first elastomer layer bonded to the composite layer to form a composite/elastomer assembly, methods of making, and methods of use thereof are provided. 1. A mechanochromic system , comprising:a first inorganic/polymer composite layer; anda first elastomer layer bonded to the composite layer to form a composite/elastomer assembly.2. The system of claim 1 , wherein the polymer comprises polyvinylalcohol claim 1 , polyvinyl butyral claim 1 , polycarbonate claim 1 , poly(methyl methacrylate) claim 1 , polyacrylates claim 1 , polystyrene sulfonate claim 1 , polyacrylic acid claim 1 , polyethylenimine claim 1 , any non-crosslinked polymer claim 1 , or a combination comprising at least one of the foregoing.3. The system of claim 1 , wherein the polymer is water soluble or organic soluble.4. The system of claim 1 , wherein the elastomer comprises polyurethane rubber claim 1 , polyacrylate rubber claim 1 , acrylic rubber claim 1 , natural rubber claim 1 , fluoroelastomer claim 1 , ethylene-propylene rubber (EPR) claim 1 , ethylene-butene rubber claim 1 , ethylene-propylene-diene monomer rubber (EPDM) claim 1 , epichlorohydrin rubber claim 1 , acrylate rubbers claim 1 , hydrogenated nitrile rubber (HNBR) claim 1 , silicone elastomers claim 1 , polyether block amides claim 1 , ethylene vinyl acetate claim 1 , styrene-butadiene-styrene (SBS) claim 1 , styrene-butadiene rubber (SBR) claim 1 , styrene-(ethylene-butene)-styrene (SEBS) claim 1 , acrylonitrile-butadiene-styrene (ABS) claim 1 , acrylonitrile-ethylene-propylene-diene-styrene (AES) claim 1 , styrene-isoprene-styrene (SIS) claim 1 , styrene-(ethylene-propylene)-styrene (SEPS) claim 1 , methyl methacrylate-butadiene-styrene (MBS) claim 1 , high rubber graft (HRG) claim 1 , polydimethylsiloxane (PDMS) claim 1 , or a combination comprising at least one of the foregoing.5. The system of claim 4 , wherein the fluoroelastomer comprises a ...

Physically crosslinkable (meth)acrylate copolymer composition

Described is a polymerizable polymer composition compri a) a copolymerizable macromer, b) a (meth)acrylate ester monomer; and c) a polyfunctional type I photoinitiator.

WATER-ABSORBING RESIN PARTICLES, WATER-ABSORBING ARTICLE, METHOD FOR PRODUCING WATER-ABSORBING RESIN PARTICLES, AND METHOD FOR INCREASING ABSORBED AMOUNT OF ABSORBER UNDER PRESSURE

Disclosed are water-absorbing resin particles in which an expansion retention rate calculated by the formula: expansion retention rate (%)=(V/V)×100 is 98% or more. Vis the volume of the swollen gel formed when 1.000±0.001 g of the water-absorbing resin particles absorb 20.0±0.1 g of pure water. Vis the volume of the swollen gel formed when 1.000±0.001 g of the water-absorbing resin particles absorb 20.0±0.1 g of physiological saline. 1. Water-absorbing resin particles ,{'sub': 1', '0, 'wherein an expansion retention rate calculated by the formula: expansion retention rate (%)=(V/V)×100, is 98% or more,'}{'sub': '0', 'Vis a volume of a swollen gel formed when 1.000±0.001 g of the water-absorbing resin particles absorb 20.0±0.1 g of pure water, and'}{'sub': '1', 'Vis a volume of a swollen gel formed when 1.000±0.001 g of the water-absorbing resin particles absorb 20.0±0.1 g of physiological saline.'}2. The water-absorbing resin particles according to claim 1 , wherein the expansion retention rate is 110% or less.3. The water-absorbing resin particles according to claim 1 , wherein Vis 20 to 25 mL.4. The water-absorbing resin particles according to claim 1 , wherein a value of non-pressurization DW after 10 minutes is 40 mL/g or more.5. An absorbent article comprising:a liquid impermeable sheet;an absorber; anda liquid permeable sheet,wherein the liquid impermeable sheet, the absorber, and the liquid permeable sheet are disposed in this order, and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the absorber comprises the water-absorbing resin particles according to .'}6. A method for producing water-absorbing resin particles claim 1 , the method comprising:{'sub': 1', '0, 'selecting water-absorbing resin particles in which an expansion retention rate calculated by the formula: expansion retention rate (%)=(V/V)×100 is 98% or more, wherein'}{'sub': '0', 'Vis a volume of a swollen gel formed when 1.000±0.001 g of the water-absorbing resin particles absorb 20.0±0.1 g ...

FRIABLE SHELL MICROCAPSULES, PROCESS FOR PREPARING THE SAME AND METHOD OF USE THEREOF

The present application describes a microcapsule comprising: (i) a lipophilic core material, and (ii) a microcapsule shell, wherein microcapsule shell formed from oil-in-water emulsion polymerisation of monomer mixture consisting essentially of: (a) greater than 70 to about 99% by weight of at least one polyfunctional ethylenically unsaturated monomer, (b) about 1 to about 30% by weight of at least one unsaturated carboxylic acid monomer or its ester, and (c) about 0 to about 30% by weight of at least one vinyl monomer. Also provides process for preparing the same and its method of use in various applications. 2. The microcapsule according to claim 1 , wherein said lipophilic core material is selected from the group consisting of fragrances claim 1 , UV absorbers claim 1 , emollient oils claim 1 , insecticides claim 1 , dyes claim 1 , detergents claim 1 , printing inks claim 1 , perfumes claim 1 , silicone conditioners claim 1 , hair treatment/shampoo materials claim 1 , biocides claim 1 , adhesives claim 1 , corrosion inhibitors claim 1 , anti-fouling agents claim 1 , flavors claim 1 , cosmetic & personal care actives claim 1 , oxidizing agents claim 1 , pharmaceutical agents claim 1 , agrochemicals/pesticides claim 1 , lipids/fats claim 1 , food additive claim 1 , liquid crystals claim 1 , coating materials claim 1 , catalysts claim 1 , preservatives and/or antimicrobial agents claim 1 , lipophilic scale inhibitors claim 1 , chemical reactants claim 1 , rustproofing agents claim 1 , recording materials claim 1 , magnetic substances claim 1 , and combinations thereof.3. The microcapsule according to claim 1 , wherein the polyfunctional ethylenically unsaturated monomer (a) is selected from the group consisting of ethylene glycol di(meth)acrylate claim 1 , di(ethylene glycol) di(meth)acrylate claim 1 , triethylene glycol di(meth)acrylate claim 1 , propylene glycol di(meth)acrylate claim 1 , 1 claim 1 ,4-butanediol di(meth)acrylate claim 1 , 1 claim 1 ,6-hexanediol ...

SYSTEMS AND PROCESSES FOR POLYACRYLIC ACID PRODUCTION

Disclosed are systems and methods for the production of polyacrylic acid and superabsorbent polymers from ethylene oxidation to form ethylene oxide. Reacting the ethylene oxide with carbon monoxide to form to beta propiolactone (BPL) or polypropiolactone (PPL), or a combination thereof. An outlet configured to provide a carbonylation stream comprising the BPL or PPL, or a combination thereof and using one or more reactors to convert BPL to acrylic acid or to convert at least some of the BPL to PPL, and then to convert PPL to acrylic acid. An outlet configured to provide a PPL stream to a second reactor tm to convert at least some of the PPL to AA or a third reactor to convert at least some of the PPL to AA. The outlet configured to provide an AA stream to a fourth reactor to convert the AA to polyacrylic acid. 1. A system for producing polyacrylic acid (PAA) from ethylene , comprising: an inlet configured to receive ethylene,', 'an oxidative reaction zone configured to convert at least some of the ethylene to ethylene oxide (EO), and', 'an outlet configured to provide an EO stream comprising the EO;, 'an oxidative reactor, comprising an inlet configured to receive EO from the EO stream of the oxidative reactor, and carbon monoxide (CO) from a CO source,', 'a central reaction zone configured to convert at least some of the EO to beta propiolactone (BPL) or polypropiolactone (PPL), or a combination thereof, and', 'an outlet configured to provide a carbonylation stream comprising the BPL, or a carbonylation stream comprising the PPL, or a combination thereof;, 'a central reactor, comprising [ an inlet configured to receive BPL from the carbonylation stream of the central reactor,', 'a first reaction zone configured to convert at least some of the BPL to acrylic acid (AA), and', 'an outlet configured to provide an AA stream comprising the AA,, '(i) a first reactor, comprising, an inlet configured to receive BPL from the carbonylation stream of the central reactor,', 'a ...

Polymeric microparticles as filtration and/or clarifying aids in phosphoric acid production

Processes for enhancing filtration rate and/or clarification of phosphoric acid produced by the wet process and containing suspended insoluble particulates by adding to one or more stage of the wet process phosphoric acid production stream an effective amount of a reagent including polymeric microparticles characterized as being anionic or amphoteric and having a weight average molecular weight of greater than 60 Million daltons are provided herein.

SILICON-CONTAINING UNDERLAYERS

Wet-strippable underlayer compositions comprising one or more silicon-containing polymers comprising a backbone comprising Si—O linkages, one or more organic blend polymers, and a cure catalyst are provided. These compositions are useful in the manufacture of various electronic devices. 1. A process comprising: (a) coating a substrate with a coating composition comprising one or more curable silicon-containing polymers comprising a backbone comprising Si—O linkages , and one or more organic blend polymers comprising as polymerized units one or more ethylenically unsaturated monomers having an acidic proton and having a pKa in water from −5 to 13 , and one or more organic solvents to form a curable silicon-containing polymer layer on the substrate; (b) curing the silicon-containing polymer layer to form a siloxane underlayer; (c) disposing a layer of a photoresist on the siloxane underlayer; (d) pattern-wise exposing the photoresist layer to form a latent image; (e) developing the latent image to form a patterned photoresist layer having a relief image therein; (f) transferring the relief image to the substrate; and (g) removing the siloxane underlayer by wet stripping.2. The process of wherein the organic blend polymer comprises as polymerized units two or more ethylenically unsaturated monomers.7. The process of wherein the lactone moiety of Ris a 5 to 7-membered ring or a substituted 5 to 7-membered ring.8. The process of wherein the coating composition further comprises one or more cure catalysts.11. The process of further comprising coating a layer of a high carbon-content organic coating on the substrate prior to step (a).12. The process of wherein the wet stripping step comprises contacting the siloxane underlayer with a mixture of sulfuric acid and hydrogen peroxide or a mixture of ammonia and hydrogen peroxide.13. A composition comprising: one or more curable silicon-containing polymers comprising a backbone comprising Si—O linkages; and one or more organic ...

POLYMER SOLUTION ELECTROLYTES

Liquid electrolyte compositions containing a lithium salt, one or more solvents having a boiling point of at least 200° C. and a solubilized polymer are disclosed. Coin cells and laminated foil pack cells containing such liquid electrolyte compositions are also disclosed. 1. A electrolyte composition containing a solubilized polymer comprising:a liquid solution resulting from the combination ofa lithium salt;a solvent or a mixture of solvents having a boiling point of at least 200° C.; anda polymer that is soluble in the electrolyte composition in an amount of from 2 to 25 weight percent based on the total weight of the electrolyte composition.2. The electrolyte composition of wherein the polymer is selected from the group consisting of: polyethylene oxide claim 1 , poly(ethylene-co-propylene oxide) claim 1 , poly (methyl methacrylate) claim 1 , poly(lithium acrylate) claim 1 , poly(butyl acrylate) claim 1 , poly(butyl methacrylate) claim 1 , methyl cellulose claim 1 , hydroxypropyl methyl cellulose claim 1 , cellulose acetate claim 1 , and mixtures thereof.3. The electrolyte composition of wherein the solvent or mixture of solvents having a boiling point of at least 200° C. is selected from the group consisting of propylene carbonate claim 1 , ethylene carbonate claim 1 , dimethoxyethane claim 1 , Gamma butyrolactone claim 1 , dimethylacetamide claim 1 , N-methylpyrrolidone claim 1 , tetraethylene glycol dimethyl ether and mixtures thereof.4. The electrolyte composition of wherein the lithium salt is selected from the group consisting of: lithium bis(trifluoromethylsulfonyl) imide (LiTFSI) claim 1 , lithium bis(fluorosulfonyl)imide (LiFSI)lithium bis(pentafluoroethylsulfonyl) imide (LiBETI) claim 1 , lithium tris(trifluorosulfonyl) methide claim 1 , lithium perchlorate (LiClO) claim 1 , lithium tetrafluoroborate (LiBF) claim 1 , lithium hexafluoroarsenate (LiAsF) claim 1 , lithium hexafluorophosphate (LiPF) claim 1 , Lithium bis(oxalatoborate) (LiBOB) claim 1 , ...

PHOTOCHROMIC COMPOSITION, PHOTOCHROMIC OPHTHALMIC LENS, AND METHOD FOR MAKING PHOTOCHROMIC OPHTHALMIC LENS

A photochromic composition for opthalmic lens which colors or darkens in certain light includes a photochromic material and a binding polymer. The photochromic material includes cyclodextrins and photochromic molecules entrapped in cavities of the cyclodextrins. A single photochromic ophthalmic lens with, as a property, successively darker concentric rings under the certain light and a method for manufacturing the lens are also provided. 1. A photochromic composition , comprising:a photochromic material, the photochromic material comprising cyclodextrins and photochromic molecules entrapped in cavities of the cyclodextrins; anda binding polymer.2. The photochromic composition of claim 1 , wherein the photochromic molecules is selected from a group consisting of spiropyrans claim 1 , spiroperimidines claim 1 , diarylethenes claim 1 , fulgides claim 1 , hexaarylbiimidazole claim 1 , azobenzenes claim 1 , benzopyrylospiran claim 1 , and any combination thereof.4. The photochromic composition of claim 1 , wherein the photochromic material has a mass percentage of about 25% to about 67% of a total mass of the photochromic composition.5. The photochromic composition of claim 1 , wherein the binding polymer comprises at least one hydrophilic monomer claim 1 , acrylic resin claim 1 , at least one initiator claim 1 , and at least one crosslinker; the hydrophilic monomer has a mass percentage of about 18% to about 35% of the total mass of the photochromic composition claim 1 , the acrylic resin has a mass percentage of about 25% to about 42% of the total mass of the photochromic composition claim 1 , the initiator has a mass percentage of about 0.5% to about 10% of the total mass of the photochromic composition claim 1 , and the crosslinker has a mass percentage of about 0.4% to about 16% of the total mass of the photochromic composition.6. A photochromic ophthalmic lens claim 1 , comprising:a base; anda photochromic layer, the photochromic layer is polymerized by at least ...

Method for producing polyacrylic acid (salt)-based water-absorbable resin

The present invention provides a method for producing, by adding an additive and/or gas bubbles to a monomer with high efficiency, a polyacrylic acid (salt)-based water-absorbing resin having high physical properties while high productivity is maintained. The step of preparing an aqueous monomer solution includes the steps of: preparing an aqueous solution; and adding a water-insoluble additive and/or gas bubbles. A retention time from when the water-insoluble additive and/or the gas bubbles is/are added to when polymerization starts is 1 second to 60 seconds.

Genetically Modified Organisms for Increased Microbial Production of 3-Hydroxypropionic Acid Involving an Oxaloacetate alpha-decarboxylase

Microorganism compositions are described that comprise combinations of genetic modifications that include a genetic modification to increase oxaloacetate alpha-decarboxylase enzymatic activity. By such genetic modification a 3-hydroxypropionic acid (“3-HP”) production pathway is provided or improved. In various embodiments, comprising other genetic modifications, including selected gene disruptions, 3-HP production is greater than in a control microorganism lacking such combinations of genetic modifications 143-. (canceled)44. A method for producing an acrylic acid-based consumer product comprising a) a heterologous nucleic acid sequence encoding an enzyme selected from the group consisting of: a native or mutated form of a mmsB protein, and a native or mutated form of a ydfG protein;', 'b) a genetic modification to decrease or eliminate an enzymatic activity selected from the group consisting of: lactate dehydrogenase, phosphate acetyltransferase, and pyruvate-formate lyase;', 'c) a heterologous nucleic acid sequence encoding an acetyl-CoA carboxylase; and', 'd) a heterologous nucleic acid sequence encoding a cyanase,, 'i) combining a carbon source and a microorganism to produce 3-hydroxypropionic acid, wherein said microorganism comprises'}ii) converting said 3-hydroxypropionic acid to acrylic acid; andiii) processing said acrylic acid into a consumer product.45. The method of claim 44 , wherein said carbon source has a ratio of carbon-14 to carbon-12 of about 1.0×10or greater.46. The method of claim 44 , wherein following (i) said method further comprises separating or purifying 3-hydroxypropionic acid from said cell culture by extraction of 3-hydroxypropionic acid from said culture in the presence of a tertiary amine.47. The method of claim 44 , wherein said 3-hydroxypropionic acid is produced at a higher level than in a non-genetically modified microorganism.48. The method of claim 44 , wherein said consumer product is selected from the group consisting of ...

MOLECULAR WEIGHT CONTROLLING AGENT FOR RADICAL POLYMERIZATION, METHOD FOR PRODUCING POLYMER USING SAME, AND POLYMER

The present invention's purpose is to provide: a molecular-weight controlling agent for radical polymerization which enables controlled radical polymerization of a water-soluble monomer in an aqueous medium; a method for producing a polymer of a water-soluble vinyl monomer using the same; and a water-soluble vinyl monomer polymer. The present invention provides a molecular-weight controlling agent for radical polymerization characterized in that the agent comprises, as its active ingredient, an iodine compound represented by formula (1) and in that the solubility of the active ingredient in water is 0.5 weight % or more at 20° C. 2. The molecular weight controlling agent for radical polymerization according to claim 1 , wherein two or more groups of R claim 1 , R claim 1 , R claim 1 , Rand X are bonded to each other and form a saturated or unsaturated claim 1 , 5- or 6-membered ring.3. The molecular weight controlling agent for radical polymerization according to claim 1 , wherein the active ingredient has a hydrophilic functional group.4. The molecular weight controlling agent for radical polymerization according to claim 3 , wherein the hydrophilic functional group is a carboxyl group claim 3 , a salt of a carboxyl group claim 3 , a hydroxyl group or an amide group.5. The molecular weight controlling agent for radical polymerization according to claim 1 , which is to be used for radical polymerization of a water-soluble vinyl monomer.6. The molecular weight controlling agent for radical polymerization according to claim 1 , wherein the solubility of the active ingredient in water is 1% by weight or more at 20° C.8. The method for producing a polymer according to claim 7 , wherein two or more groups of R claim 7 , R claim 7 , R claim 7 , Rand X are bonded to each other and form a saturated or unsaturated claim 7 , 5- or 6-membered ring.9. The method for producing a polymer according to claim 7 , wherein the active ingredient has a carboxyl group claim 7 , a salt of ...

METHOD FOR PRODUCING PARTICULATE WATER-ABSORBING AGENT THAT HAS POLYACRYLIC ACID (SALT)-BASED WATER-ABSORBING RESIN AS MAIN COMPONENT

Provided is a method for producing a particulate water absorbing agent, the method including the steps of: a polymerization step of polymerizing an acrylic acid (salt)-based aqueous monomer solution so as to obtain a crosslinked hydrogel polymer; a drying step of drying the crosslinked hydrogel polymer so as to obtain a dried polymer; a classification step of classifying a polymer subjected to classification so as to obtain a water-absorbing resin powder having a specific particle size; and a surface-crosslinking step of surface-crosslinking the water-absorbing resin powder that is not surface crosslinked, wherein the classification step is carried out at least either or both of before and/or after the surface-crosslinking step but after said drying step, and wherein a hole shape of a classification sieve used in the classification step is an irregular polygonal or non-circular. 1. A method for producing a particulate water absorbing agent containing a polyacrylic acid (salt)-based water-absorbing resin as a main component , the method comprising:a polymerization step of polymerizing an acrylic acid (salt)-based aqueous monomer solution so as to obtain a crosslinked hydrogel polymer;a drying step of drying said crosslinked hydrogel polymer so as to obtain a dried polymer;a classification step of classifying a polymer subjected to classification; anda surface-crosslinking step of surface-crosslinking an unsurface-crosslinked water-absorbing resin powder,wherein the classification step is carried out at least either or both of before and/or after the surface-crosslinking step but after said drying step, andwherein a hole shape of a classification sieve used in the classification step is irregular polygonal or non-circular.2. The method according to claim 1 , wherein the hole shape of the classification sieve is rectangular or oval.3. The method according to claim 1 , wherein the classification step is carried out after the surface-crosslinking step.4. The method ...

CONTINUOUS PROCESS FOR THE MANUFACTURE OF HIGHLY-BRANCHED POLYMERS

The present invention relates to a continuous process for the manufacture of highly-branched homo- or copolymers of C3-C8 ethylenically unsaturated mono- or dicarboxylic acid as well as the anhydrides and salts thereof (monomer A) by means of free-radical polymerization of monomer A and optionally water-soluble, monethylenically unsaturated comonomers (monomer B) in an aqueous medium in the presence of at least one water-soluble initiator, wherein the polymerization takes place in at least one tubular reactor segment. 1. A continuous process for the manufacture of homopolymers or copolymers by means of by free-radical polymerization of monomer A , C-Cmonoethylenically unsaturated mono- or dicarboxylic acid or of the anhydrides and salts thereof , and optionally , monomer B , water-soluble , ethylenically unsaturated monomers different from monomer A in an aqueous medium in the presence of at least one water-soluble initiator , the process comprises the following steps:i) optionally, continuously metering the solutions of the monomer A, and the optional monomer B, and a solution of the initiator into a mixing unit comprising at least one micro-mixer and mixing the reactants in the mixing unit,{'sup': 2', '3, 'ii) conducting continuous free-radical polymerization in at least one tubular reactor segment at a temperature of from 180° C. to 300° C., wherein the tubular reactor has a specific surface area larger than 50 m/m, and the entire reactor system contains at least one pressure regulating device.'}2. The continuous process according to claim 1 , wherein the polymerization is conducted in the absence of common chain transfer agents.318-. (canceled)19. The continuous process according to claim 1 , wherein the ratio of the length of at least one tubular reactor segment in the direction of the flow of the stream to the diameter is from 1000:1 to 10:1.20. The continuous process according to claim 1 , wherein the polymerisation is carried out at a temperature of 200° C. ...

DENTAL ADHESIVE COMPOSITION, PREPARATION AND USE THEREOF

The invention relates to a dental adhesive composition comprising ethylenically unsaturated component(s) with acidic moiety, ethylenically unsaturated component(s) without acidic moiety, water, sensitizing agent(s), reducing agent(s), a silane composition comprising (meth)acrylate functional silane(s) and amino functional silane(s). This composition is in particular useful for adhesively fixing dental restorations based on lithium disilicate and other glass ceramic materials to dental surfaces. 1. A dental adhesive composition comprising:ethylenically unsaturated component(s) with acidic moiety;ethylenically unsaturated component(s) without acidic moiety;water;sensitizing agent(s);reducing agent(s); and (meth)acrylate functional silane(s), and', 'amino functional silane(s),, 'a silane composition comprisingwherein the (meth)acrylate functional silane(s) is present in equal proportion or in excess with respect to weight over the amino functional silane(s).2. The dental adhesive composition of claim 1 , the (meth)acrylate functional silane being characterized by one or more of the following features: {'br': None, 'sub': m', 'n', '3-n, 'sup': 1', '2, 'A-B—Si(R)(OR)\u2003\u2003Formula, 'Molecular weight: 200 to 400 g/mol;'}wherein:A is a (meth)acrylate,{'sub': 1', '12', '6', '12, 'B is selected from (i) linear or branched Cto Calkyl, (ii) Cto Caryl, (iii) organic group having 2 to 20 carbon atoms, wherein the organic group comprises one or more ether, thioether, ester, thioester, thiocarbonyl, amide, urethane, carbonyl and sulfonyl linkages,'}{'sup': '1', 'sub': 1', '6', '6', '12, 'Ris a Cto Calkyl group, or an Cto Caryl group,'}{'sup': '2', 'sub': 1', '6, 'Ris a Cto Calkyl group,'}m=1, 2, 3, or 4, andn=0, 1, or 2.3. The dental adhesive composition of claim 1 , the amino functional silane being characterized by one or more of the following features: {'br': None, 'sup': 1', '2, 'sub': n', '3-n, 'A-B—Si(R)(OR)\u2003\u2003Formula, 'Molecular weight: 160 to 500 g/mol;'} ...

GAS BARRIER POLYMER AND GAS BARRIER LAMINATE USING SAME

A gas barrier polymer is formed by heat-curing a mixture including polycarboxylic acid and a polyamine compound, in which, in an infrared absorption spectrum, when a straight line connecting a measurement point at 1493 cmand a measurement point at 1780 cmis set as a baseline, an absorption intensity at 1660 cmis set as I(1660), and an absorption intensity at 1625 cmis set as I(1625), R represented by Equation (1) is greater than 1. 1. A gas barrier polymer formed by heat-curing a mixture including polycarboxylic acid and a polyamine compound ,{'sup': ['−1', '−1', '−1', '−1'], '#text': 'wherein, in an infrared absorption spectrum of the gas barrier polymer, when a straight line connecting a measurement point at 1493 cmand a measurement point at 1780 cmis set as a baseline, an absorption intensity at 1660 cmis set as I(1660), and an absorption intensity at 1625 cmis set as I(1625),'}{'claim-text': {'br': None, '#text': 'R=I(1660)/I(1625)−{−0.65×(total amine/COOH)+0.4225}\u2003\u2003(1)'}, '#text': 'R represented by Equation (1) is greater than 1,'}(in Equation (1), “total amine” is a total number of moles of primary, secondary, and tertiary amino groups included in the polyamine compound in the mixture, and “COOH” is the number of moles of —COOH groups included in the polycarboxylic acid in the mixture).2. The gas barrier polymer according to claim 1 ,wherein the polycarboxylic acid includes one or two or more polymers selected from the group consisting of polyacrylic acid, polymethacrylic acid, and a copolymer of acrylic acid and methacrylic acid.3. The gas barrier polymer according to or claim 1 ,wherein the polyamine compound includes a branched polyamine.4. The gas barrier polymer according to claim 1 ,wherein (total amine/COOH) in Equation (1) is equal to or more than 0.4 and equal to or less than 0.7.5. The gas barrier polymer according to claim 1 ,{'sub': '2', '#text': 'wherein (total of the number of moles of —NH groups and the number of moles of —NHgroups ...

Air void control composition for bulk monomer polymerization

The invention relates to the use of low levels of aliphatic short-chain saturated esters to control air void formation in any exothermic polymerization reaction in which the exotherm exceeds the boiling point of the monomer. One such polymerization is the bulk polymerization of one or more monomers having carboxylic acid ester monomers, at a level of at least 10% of total monomer. The aliphatic short-chain saturated esters are used in the polymerization mixture at levels of 0.5 to 10 weight percent, based on the carboxyl-containing monomer. The invention is especially useful in polymerization of methylmethacrylate polymers and copolymers, either neat, or as a polymer composite system.

ACTIVE ENERGY RAY CURABLE LIQUID, METHOD OF MANUFACTURING FABRICATION OBJECT, RESIN FABRICATION OBJECT, AND GEL FABRICATION OBJECT

An active energy ray curable liquid contains an unsaturated acid monomer and a metal salt. 1. An active energy ray curable liquid comprising:an unsaturated acid monomer; anda metal salt.2. The active energy ray curable liquid according to claim 1 , further comprising a polymerizable monomer.3. The active energy ray curable liquid according to claim 1 , further comprising a solvent.4. The active energy ray curable liquid according to claim 3 , wherein the solvent comprises at least one of water and an organic solvent.5. The active energy ray curable liquid according to claim 1 , further comprising an unsaturated acid metal salt monomer having an ion cross-linked structure formed by the unsaturated acid monomer and the metal salt.6. The active energy ray curable liquid according to claim 1 , wherein the unsaturated acid monomer comprises at least one of acrylic acid claim 1 , a derivative of acrylic acid claim 1 , methacrylic acid claim 1 , and a derivative of methacrylic acid.7. The active energy ray curable liquid according to claim 1 , wherein the metal salt comprises a multi-valent metal salt.8. The active energy ray curable liquid according to for fabricating a fabrication object.9. A method of manufacturing a fabrication object comprising:applying an active energy ray curable liquid comprising an unsaturated acid monomer and a metal salt to form a liquid film comprising the active energy ray curable liquid;curing the liquid film to form a layer;repeating the applying and the curing to laminate the layer to form the fabrication object.10. The method according to claim 9 , wherein the active energy ray curable liquid further comprises a polymerizable monomer.11. A method of manufacturing a fabrication object comprising:applying a first liquid comprising an unsaturated acid monomer and a second liquid comprising a metal salt and a solvent to a substrate to form a mixed gel film thereon;curing the mixed gel film to form a layer; andrepeating the applying and the ...

Noncovalent soft elastomer and method for manufacturing the same

A noncovalent soft elastomer includes a binary block copolymer composed of an A block and a B block and a solvent, wherein the B block has a noncovalent-bonding functional group, and the solvent is a nonvolatile liquid which has a property of dissolving the B block but not dissolving the A block and which forms a functional group capable of noncovalent-bonding of the B block.

Cosmetic

A cosmetic includes a component (a) and (b): wherein component (a) is a polyacrylic acid or a salt thereof or poly(2-acrylamido-2-methylpropanesulfonic acid) or a salt thereof that has a weight-average molecular weight of 500,000 to 8,000,000, is linear, and has a thread length of 10 mm or less at room temperature when formed into a 1% by mass solution, wherein the thread length is a distance determined by: bringing a round disk having a diameter of about 1 cm uniformly and lightly into contact with a surface of the solution; lowering a container that contains the solution at a velocity of 5 mm/sec, and measuring the distance that the container descended until a thread of the solution is cut, and component (b) is a crosslinked water-swellable polymer having a crosslinking density of 0.01 to 1% by mole, or a microgel obtained by pulverizing a gel consisting of a hydrophilic compound having gelating ability.

WATER-BASED COMPOSITIONS WITH LONG TERM GLOSS RETENTION

Water-based coating compositions or paint having improved gloss retention, including a latex or water-dispersible polymer, a UV-VIS absorber comprising a substituted benzophenone capable of being a free radical generator, a hindered amine light stabilizer, and optionally a low-VOC coalescent provided in a preferably desired amount. A composition comprising a blend a UV-VIS absorber comprising a substituted benzophenone capable of being a free radical generator, a hindered amine light stabilizer, and a low-VOC coalescent, providing a thermally-stable coalescent that can be used in a paint formulation for gloss retention. Gloss retention of paints containing the UV-VIS absorber and hindered amine light stabilizer being markedly improved over paints that do not have both components present. 15-. (canceled)6. A thermally-stable coalescent blend composition , comprising:one or more UV-VIS absorbers, wherein the one or more UV-VIS absorbers comprises a substituted benzophenone capable of being a free radical generator;one or more hindered amine light stabilizers; andone or more low-VOC coalescents;wherein the one or more UV-VIS absorbers and the one or more hindered amine light stabilizers comprise less than about 50 wt-% of the thermally-stable coalescent blend composition; andwherein the one or more UV-VIS absorbers and the one or more hindered amine light stabilizers are present in a weight ratio of about 1:9 to about 7:3 (UV-VIS absorbers:hindered amine light stabilizers).9. The thermally-stable coalescent blend composition of claim 6 , wherein the one or more UV-VIS absorbers comprises phenylbis(2 claim 6 ,4 claim 6 ,6-trimethylbenzoyl)phosphine oxide claim 6 , ethyl-2 claim 6 ,4 claim 6 ,6-trimethylbenzoylphenylphosphinate claim 6 , 2 claim 6 ,4 claim 6 ,6-trimethylbenzophenone claim 6 , 4-methylbenzophenone claim 6 , 4-phenylbenzophenone claim 6 , 2 claim 6 ,2-dimethoxy-1 claim 6 ,2-diphenylethanone claim 6 , 1-hydroxycyclohexyl phenyl ketone claim 6 , 2-hydroxy-2- ...

Preparation Method Of Porous Super Absorbent Polymer

The present disclosure relates to a preparation method of a porous super absorbent polymer including the steps of preparing a monomer neutralized solution by adding an internal cross-linking agent, an initiator, an inorganic filler, and a nonionic surfactant to a neutralized solution obtained by neutralizing at least 80 mol % of a water soluble ethylene-based unsaturated monomer containing acidic groups; high-shear mixing the monomer neutralized solution; preparing a hydrogel polymer from the high-shear mixed monomer neutralized solution by thermal polymerization or photopolymerization; and preparing a base resin powder by drying, pulverizing, and classifying the hydrogel polymer. 1. A preparation method of a porous super absorbent polymer , comprising the steps of:preparing a monomer neutralized solution by adding an internal cross-linking agent, an initiator, an inorganic filler, and a nonionic surfactant to a neutralized solution obtained by neutralizing at least 80 mol % of a water soluble ethylene-based unsaturated monomer containing acidic groups;high-shear mixing the monomer neutralized solution;preparing a hydrogel polymer from the high-shear mixed monomer neutralized solution by thermal polymerization or photopolymerization; andpreparing a base resin powder by drying, pulverizing, and classifying the hydrogel polymer.2. The preparation method of a porous super absorbent polymer of claim 1 ,wherein the nonionic surfactant is used in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the water soluble ethylene-based unsaturated monomer containing acidic groups.3. The preparation method of a porous super absorbent polymer of claim 1 ,wherein the nonionic surfactant comprises at least one selected from the group consisting of alkylene glycol, polyethylene glycol, poly(ethylene-propylene) glycol, polyvinyl alcohol, polyoxyethylene alkyl ether, sorbitan ester of fatty acid, fatty acid diethanolamine and alkyl monoglyceryl ether.4. The ...

Process for the production of methacrylic acid and its derivatives and polymers produced therefrom

A process for the production of methacrylic acid by the base catalysed decarboxylation of at least one dicarboxylic acid selected from itaconic, citraconic or mesaconic acid or mixtures thereof is described. The decarboxylation is carried out at a temperature in the range from 100 to 199° C. A method of preparing polymers or copolymers of methacrylic acid or methacrylic acid esters is also described.

Water absorbing resin particles and method for producing same, absorbent body, and absorbent article

Water-absorbent resin particles 10a having a gel surface elasticity measured by the following (1) to (5) is 0.35 to 2.00 N:(1) preparing a gel of the water-absorbent resin particles,(2) bringing a jig into contact with the gel,(3) performing an operation of pressing the jig into the gel and thereafter pulling the jig back to obtain a maximum value and a minimum value of loads applied to the jig during the operation,(4) repeating twice an operation of pressing the jig into the gel and thereafter pulling the jig back to obtain a maximum value and a minimum value of loads applied to the jig during each of operations, and(5) obtaining an average value of maximum values obtained in (3) and (4) and an average value of minimum values obtained in (3) and (4) to obtain a difference between these values as the gel surface elasticity.

PRIMER, INK, AND VARNISH COMPOSITIONS AND ASSOCIATED PRINTING APPARATUS

The invention describes new designs of commercial inkjet or flexographic web and sheet fed presses with pre-coating prior to printing which may upgrade the quality of the substrates and render them printable by all printing technologies including inkjet and digital. Also described are curable water-based coatings, inkjet and flexographic inks and overprint varnishes which may be radiation cured at high speed without the need for external applied heat to remove water. When used as coatings or primers, the compositions of the invention may create a surface on cellulosic substrates, polymeric films and some metal surfaces which are suitable for printing on by most printing methods including but not limited to inkjet, wet and dry toner systems, lithographic, gravure, flexographic and 4-D printing. The primer/coatings may also add up to 35% tensile strength to lightweight “thin” papers. The primer/coatings, inks and overprint varnishes can be cured by UV with or without the need for added commercial and/or conventional photoinitiators and the same formulations can be cured with electron beam using less than 35% of the energy required for conventional EB coatings and inks and without the need for a nitrogen environment thus allowing EB cure sheet fed printing. The primer/coatings of the invention may allow multi-colour printing on lightweight papers by conventional water-based inkjet inks that could previously not be printed with this method. Overprint varnishes of the invention can be applied successfully in-line on the printing press over wet inks before being EB or UV cured. 1. A curable composition comprising:a metal salt comprising an anionic form of an organic compound, said organic compound comprising at least one polymerisable unsaturated group and an acidic hydrogen; and water,wherein the composition has a water content of between about 10 and about 50 wt %.2. The curable composition according to claim 1 , wherein the metal salt comprises a metal selected from ...

Method for Preparation of Super Absorbent Polymer

According to the method for preparation of a super absorbent polymer according to of the present disclosure, fine particles present in the prepared super absorbent polymer are removed, thereby solving a dispersion problem of the fine particles and a problem of reduction in the physical properties of the super absorbent polymer. 1. A method for preparation of a super absorbent polymer , comprising:1) forming a hydrogel polymer containing a first cross-linked polymer by cross-linking polymerization of a water-soluble ethylene-based unsaturated monomer having at least partially neutralized acidic groups in the presence of an internal cross-linking agent;2) drying, pulverizing and classifying the hydrogel polymer to form a base resin powder; and3) cross-linking a surface by heat-treating the base resin powder in the presence of a surface cross-linking solution to form super absorbent polymer particles; and4) adding brine to the super absorbent polymer particles,wherein a conductivity of the brine is 15 to 55 mS/cm.2. The method for preparation of a super absorbent polymer of claim 1 , {'br': None, 'sub': 1', '1, 'R—COOM\u2003\u2003[Chemical Formula 1]'}, 'wherein the water-soluble ethylene-based unsaturated monomer is a compound represented by the following Chemical Formula 1,'}in Chemical Formula 1,{'sup': '1', 'Ris a C2 to C5 alkyl group having an unsaturated bond, and'}{'sup': '1', 'Mis a hydrogen atom, a monovalent or divalent metal, an ammonium group, or an organic amine salt.'}3. The method for preparation of a super absorbent polymer of claim 1 ,wherein the internal cross-linking agent comprises at least one of N,N′-methylenebisacrylamide, trimethylolpropane tri(meth)acrylate, ethylene glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, polypropylene glycol di(meth)acrylate, butanediol di(meth)acrylate, butylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, hexanediol di(meth)acrylate, triethylene ...

Method For Loading Loose Iron Ore Partially Treated By Means Of Superabsorbents

Process of loading the hold of a bulker in which the hold is loaded in succession with part of the ore treated with a superabsorbent polymer (SAP) and part of the ore not treated with a superabsorbent polymer (SAP). 1. A process of loading a hold of a bulker in which the hold is loaded in succession with part of ore treated with a superabsorbent polymer and part of ore not treated with any superabsorbent polymer.2. The process according to claim 1 , characterized in that the part of the ore treated with the superabsorbent polymer forms a lower layer spread out over an entire bottom of the hold and the untreated part of the ore forms an upper layer.3. The process according to characterized in that the ore is treated with variable concentrations of superabsorbent polymer.4. The process according to claim 1 , characterized in that a volume of ore treated with the superabsorbent polymer represents at the most 70% of a total volume of ore in the hold.5. The process according to characterized in that the superabsorbent polymer comprises reticulated copolymers based on acrylamide and acrylic acid claim 1 , partially or totally neutralized and also based on 2-acrylamido-2-methylpropane sulfonic acid partially or totally neutralized and/or monomers of a hydrophobic nature.6. The process according to characterized in that the superabsorbent polymer contains a population of particles having a size smaller than 1 mm and a population of particles with size included between 1 and 4 mm.7. The process according to characterized in that the quantity of superabsorbent polymer mixed into the ore is included between 0.05 and 1% by weight.8. The process according to characterized in that the ore is treated with a superabsorbent polymer and a linear hydrosoluble polymer based on acrylamide.9. The process according to characterized in that the linear hydrosoluble polymer has a molecular weight in excess of 10 million daltons.10. The process according to characterised in that the quantity ...

MONOMERS, POLYMERS AND METHODS OF MAKING THE SAME

The present disclosure relates to compositions that include at least one of 2. The composition of claim 1 , wherein each of R claim 1 , R claim 1 , R claim 1 , R claim 1 , R claim 1 , and Rcomprises at least one of a hydroxyl group claim 1 , an alkyl group claim 1 , an alkoxy group claim 1 , a carboxylic acid claim 1 , or an ether.9. The composition of claim 8 , further comprising a storage modulus between greater than about 100 GPa and less than about 1000 GPa.10. The composition of claim 8 , further comprising a loss modulus between greater than about 10 Pa and less than about 110 Pa.11. The composition of claim 8 , further comprising a glass transition temperature between greater than about 100° C. and less than about 130° C.12. The composition of claim 1 , wherein the composition is at least partially bioderived.17. The composition of claim 14 , wherein the composition is at least partially bioderived. This application claims the benefit of U.S. Provisional Patent Application No. 62/736,798 filed Sep. 26, 2018, the contents of which are incorporated herein by reference in their entirety.The United States Government has rights in this disclosure under Contract No. DE-AC36-08GO28308 between the United States Department of Energy and Alliance for Sustainable Energy, LLC, the Manager and Operator of the National Renewable Energy Laboratory.Acrylonitrile-butadiene-styrene, or ABS, is a thermoplastic polymer typically used in injection molding and extruding applications. Styrene and acrylonitrile can be polymerized in the presence of polybutadiene, to create lightweight materials having superior hardness, toughness and resistance properties. ABS is commonly used for ventilation pipes, automotive components, kitchen appliances, and even Lego bricks. One of the major drawbacks of this ubiquitous material is that it is made from petroleum-derived chemicals. Therefore, the development of monomers having properties similar to styrene, from lignocellulosic biomass, is of ...

SOLVENT COMPOSITION AND PRODUCTION METHOD THEREFOR

A solvent composition includes an organic solvent including one or more organic solvents (A) and one or more organic solvents (B), and one or more types of core-shell polymer particles each comprising a core layer and a shell layer. The organic sol vents (A) have a polar teen δp of a Hansen solubility parameter of less than 11 and a hydrogen bond term δh of less than 10, and the organic solvents (B) satisfy at least one of 11 or more of the polar term δp or 10 or more of the hydrogen bond term δh. A weight ratio of (A) to (B) ranges from 15:85 to 95:5. Based on a total weight of the solvent composition, a content of the core-shell polymer particles is 20 to 40% by weight and a water content is 1% by weight or less. 1. A solvent composition comprising:an organic solvent comprising one or more organic solvents (A) and one or more organic sol vents (B); andone or more types of core-shell polymer particles each comprising a core layer and a shell layer,wherein the one or more organic solvents (A) have a polar term δp of a Hansen solubility parameter of less than 11 and a hydrogen bond term δh of less than 10,wherein the one or more organic solvents (B) satisfy at least one of: 11 or more of the polar δp; or 10 or more of the hydrogen bond term δh,wherein a weight ratio of the one or more organic solvents (A) to the one or more organic solvents (B) ranges from 15:85 to 95:5, andwherein, based on a total weight of the solvent composition, a content of the core-shell polymer particles is 20 to 40% by weight and a water content is 1% by weight or less.2. The solvent composition according to claim 1 , whereinthe organic solvent (A) is one or more solvents selected from the group consisting of toluene, xylene, ethyl acetate, propylene glycol monomethyl ether acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone, andthe organic solvent (B) is one or more solvents selected from the group consisting of butanol, methyl cellosolve, butyl cellosolve, ...

POLYMERIZABLE POLYDIMETHYLSILOXANE-POLYOXYALKYLENE BLOCK COPOLYMERS

The invention provides a polymerizable polydimethylsiloxane-polyoxyalkylene block copolymer which comprises (1) a linear polymer chain comprising at least two polydimethylsiloxane segments, one hydrophilic polyoxyalkylene segment between each pair of polydimethylsiloxane segments, and one amide-rich linker between each pair of one polydimethylsiloxane segment and one hydrophilic polyoxyalkylene segment, and (2) two terminal (meth)acryloyl groups. The hydrophilized polydiorganosiloxane vinylic crosslinker has a weight average molecular weight of at least 3000 Daltons. The invention is also related to a silicone hydrogel contact lens produced from a polymerizable polydimethylsiloxane-polyoxyalkylene block copolymer of the invention. 2. The polymerizable polydimethylsiloxane-polyoxyalkylene block copolymer according to claim 1 , wherein p1 is zero.3. The polymerizable polydimethylsiloxane-polyoxyalkylene block copolymer according to claim 1 , wherein b1 is zero.4. The polymerizable polydimethylsiloxane-polyoxyalkylene block copolymer according to claim 1 , wherein p1 and b1 both are zero and e1 is an integer of from 10 to 100.6. The silicone hydrogel contact lens according to claim 5 , wherein the hydrophilic vinylic monomer is N-vinylpyrrolidone claim 5 , N claim 5 ,N-dimethyl (meth)acrylamide claim 5 , (meth)acrylamide claim 5 , hydroxylethyl (meth)acrylamide claim 5 , hydroxyethyl (meth)acrylate claim 5 , glycerol methacrylate (GMA) claim 5 , polyethylene glycol (meth)acrylate claim 5 , polyethylene glycol C-C-alkyl ether (meth)acrylate having a weight average molecular weight of up to 1500 claim 5 , N-vinyl formamide claim 5 , N-vinyl acetamide claim 5 , N-vinyl isopropylamide claim 5 , N-vinyl-N-methyl acetamide claim 5 , N-methyl-3-methylene-2-pyrrolidone claim 5 , 1-ethyl-3-methylene-2-pyrrolidone claim 5 , 1-methyl-5-methylene-2-pyrrolidone claim 5 , 1-ethyl-5-methylene-2-pyrrolidone claim 5 , 5-methyl-3-methylene-2-pyrrolidone claim 5 , 5-ethyl-3-methylene-2- ...

Manufacturing Method Of Super Absorbent Polymer And Super Absorbent Polymer

The present invention relates to a super absorbent polymer and a manufacturing method thereof. More particularly, the present invention relates to a manufacturing a fine powder reassembly in which excellent physical properties are maintained. 1. A super absorbent polymer in which a fine powder reassembly , which is obtained by mixing fine powder with sodium hydroxide and performing reassembly , is subjected to surface cross-linking , wherein the fine powder has a particle diameter of less than 150 μm in the super absorbent polymer obtained by polymerizing a water-soluble ethylenically unsaturated monomer in which an acidic group is included and at least one portion of the acidic group is neutralized ,wherein a centrifugal retention capacity (CRC) measured according to EDANA method WSP 241.3 is 33.0 to 39.0 g/g;a 0.7 psi absorption under pressure (AUP) measured according to EDANA method WSP 241.3 is 20.0 to 25.0 g/g; andan absorption speed by a vortex method is 100 seconds or less.2. The super absorbent polymer of claim 1 , wherein:the sodium hydroxide is mixed in a content of 0.1 to 20 parts by weight with respect to 100 parts by weight of the fine powder. This application is a divisional of U.S. application Ser. No. 15/765,092, filed on Mar. 30, 2018, which is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/KR2016/010375, filed on Sep. 13, 2016, which claims the benefit of Korean Patent Application No. 10-2016-0029840, filed in the Korean Intellectual Property Office on Mar. 11, 2016, and Korean Patent Application No. 10-2016-0101900, filed in the Korean Intellectual Property Office on Aug. 10, 2016, the entire contents of which are incorporated herein by reference.The present invention relates to a super absorbent polymer and a manufacturing method thereof. More particularly, the present invention relates to a super absorbent polymer capable of manufacturing a fine powder reassembly exhibiting excellent absorption characteristic ...

Super Absorbent Polymer And Method For Producing Same

The present invention relates to a super absorbent polymer exhibiting more improved absorption under pressure and liquid permeability, even while basically maintaining excellent centrifuge retention capacity and absorption rate, and a method for producing the same. The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the surface crosslinking agent includes at least two compounds having a solubility parameter value (σ) of 12.5 (cal/cm)or more, and wherein at least one of the surface crosslinking agents is an alkylene carbonate-based compound, and the remainder is selected from the group consisting of an alkylene carbonate-based compound and a polyhydric alcohol-based compound. 1. A super absorbent polymer comprising:a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; anda surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent,{'sup': 3', '1/2, 'wherein the surface crosslinking agent includes at least two compounds having a solubility parameter value (σ) of 12.5 (cal/cm)or more,'}wherein at least one of the surface crosslinking agents is an alkylene carbonate-based compound, and the remainder is selected from the group consisting of an alkylene carbonate-based compound and a polyhydric alcohol-based compound, and {'br': None, 'i': T', '−T, 'sub': S', '0, 'Permeability (sec)=\u2003\u2003[Equation 1]'}, 'wherein the permeability measured and calculated by the ...

PROCESS FOR THE PRODUCTION OF METHACRYLIC ACID AND ITS DERIVATIVES AND POLYMERS PRODUCED THEREFROM

A process for the production of methacrylic acid or esters thereof by the base catalysed decarboxylation of at least one dicarboxylic acid selected from itaconic, citraconic or mesaconic acid or mixtures thereof in an aqueous reaction medium is described. The decarboxylation is carried out at a temperature in the range from 200° C. and up to 239° C. The methacrylic acid is isolated from the aqueous reaction medium by a purification process which does not include introducing an organic solvent to the aqueous reaction medium for solvent extraction of the methacrylic acid into an organic phase. A method of preparing polymers or copolymers of methacrylic acid or methacrylic acid esters is also described. 1. A process for the production of methacrylic acid or esters thereof by the base catalysed decarboxylation of at least one dicarboxylic acid selected from itaconic , citraconic or mesaconic acid or mixtures thereof in an aqueous reaction medium , wherein the decarboxylation is carried out at a temperature in the range from 200° C. and up to 239° C. and wherein the methacrylic acid is isolated from the aqueous reaction medium by a purification process which does not include introducing an organic solvent to the said aqueous reaction medium for solvent extraction of the methacrylic acid into an organic phase.2. A method or process according to any claim 1 , wherein the dicarboxylic acid(s) reactant(s) or the source of pre-acids thereof are exposed to the reaction conditions for a time period of between about 75 seconds and 3000 seconds.3. A process for the production of methacrylic acid by the base catalysed decarboxylation of at least one dicarboxylic acid selected from itaconic claim 1 , citraconic or mesaconic acid or mixtures thereof claim 1 , wherein the decarboxylation is carried out in the temperature range between 200 and 239° C. and the dicarboxylic acid(s) reactant(s) are exposed to the reaction conditions for a time period of at least 80 seconds.4. A process ...

ACRYLIC ACID, AND METHODS OF PRODUCING THEREOF

Provided herein are methods of producing acrylic acid from beta-propiolactone. Such methods may involve the use of a heterogeneous catalyst, such as a zeolite. 1. A method of producing acrylic acid from beta-propiolactone , comprising:combining beta-propiolactone, a zeolite, and a polymerization inhibitor; andproducing acrylic acid from at least a portion of the beta-propiolactone.2. The method of claim 1 , the zeolite is an acidic zeolite.3. The method of claim 1 , wherein the zeolite is Zeolite Y or Zeolite ZSM-5 claim 1 , or a combination thereof.4. The method of claim 1 , wherein the polymerization inhibitor is phenothiazine.5. The method of claim 1 , wherein the beta-propiolactone is provided at a rate of less than 1.5 g/min.6. The method of claim 5 , wherein the beta-propiolactone is provided at a rate of between 0.75 g/min and 1.25 g/min.7. The method of claim 1 , wherein the acrylic acid produced is continuously isolated.8. The method of claim 1 , wherein the acrylic acid is produced at a yield of at least 50%.9. The method of claim 1 , wherein the acrylic acid is produced at a temperature of between 170° C. and 200° C.10. The method of claim 1 , wherein the beta-propiolactone claim 1 , the polymerization inhibitor claim 1 , and the zeolite are further combined with a solvent.11. The method of claim 10 , wherein the solvent comprises a polar aprotic solvent.12. The method of claim 10 , wherein the solvent comprises sulfolane.13. The method of claim 1 , wherein the acrylic acid produced has a purity of greater than 95%.14. The method of claim 1 , further comprising isolating acrylic acid.15. The method of claim 14 , wherein the acrylic acid is isolated by distillation.16. The method of claim 1 , wherein the beta-propiolactone is produced from ethylene oxide and carbon monoxide.17. A method of producing a superabsorbent polymer claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'polymerizing acrylic acid produced according to the method of ...

Super Absorbent Polymer And Method For Producing Same

The present invention relates to a super absorbent polymer exhibiting more improved absorption under pressure and liquid permeability, even while basically maintaining excellent centrifuge retention capacity and absorption rate, and a method for producing the same. The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the surface crosslinking agent includes at least two compounds having a solubility parameter value (σ) of 12.5 (cal/cm)or more, and wherein at least one of the surface crosslinking agents is an alkylene carbonate-based compound, and the remainder is selected from the group consisting of an alkylene carbonate-based compound and a polyhydric alcohol-based compound. 1. A method for producing a super absorbent polymer comprising the steps of:performing crosslinking polymerization of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups in the presence of an internal crosslinking agent to form a hydrogel polymer containing a first crosslinked polymer;drying, pulverizing and classifying the hydrogel polymer to form a base polymer power; andheat-treating and surface-crosslinking the base polymer powder in the presence of a surface crosslinking agent to form a super absorbent polymer particle,{'sup': 3', '1/2, 'wherein the surface crosslinking agent includes at least two compounds having a solubility parameter value (σ) of 12.5 (cal/cm)or more,'}wherein at least one of the surface crosslinking agents is an alkylene carbonate-based compound, and the remainder is selected from the group consisting of an alkylene carbonate-based compound and a polyhydric ...

Acrylic rubber, acrylic rubber composition, cross-linked acrylic rubber product, and seal member

An acrylic rubber contains (a) methyl methacrylate units, (b) ethyl acrylate units, (c) n-butyl acrylate units, (d) 2-methoxyethyl acrylate units, and (e) cross-linking site monomer units, in which the acrylic rubber contains 10 to 20% by weight of (a) the methyl methacrylate units, 15% by weight or less of (b) the ethyl acrylate units, 60 to 80% by weight of (c) the n-butyl acrylate units, 10 to 30% by weight of (d) the 2-methoxyethyl acrylate units, and 0.5 to 5% by weight of (e) the cross-linking site monomer units.

Porous Super Absorbent Polymer And Preparation Method Thereof

The present disclosure relates to a preparation method of a porous super absorbent polymer exhibiting excellent absorption performance and improved absorption rate due to a novel pore structure, and a porous super absorbent polymer prepared therefrom. The porous super absorbent polymer includes a base resin powder including a cross-linked polymer of a water soluble ethylene-based unsaturated monomer containing acidic groups which are at least partially neutralized, and an inorganic filler contained in the cross-linked structure of the cross-linked polymer, wherein the base resin powder includes a plurality of pores having a diameter of a sub-micron (sub-μm) scale in the cross-linked structure, and an interconnected pore structure in the form of an open channel in which 90% or more of the pores are connected to each other. 1. A preparation method of a porous super absorbent polymer , comprising the steps of:preparing a monomer composition comprising a water soluble ethylene-based unsaturated monomer containing acidic groups which are at least partially neutralized, an internal cross-linking agent, an initiator, an inorganic filler, and an anionic surfactant;stirring the monomer composition under a shear force at a rate of 3000 to 20,000 rpm to generate bubbles in the monomer composition;preparing a hydrogel polymer by cross-linking the monomer composition; andpreparing a base resin powder by drying, pulverizing, and classifying the hydrogel polymer,wherein the monomer has acidic groups which are at least 80 mol % neutralized, andthe anionic surfactant has 10 or more carbon atoms or HLB of 15 or more, and includes a compound in the form of a sulfate salt, a carboxylate salt or a phosphate salt.2. The preparation method of a porous super absorbent polymer of claim 1 ,wherein the anionic surfactant is used in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the monomer.3. The preparation method of a porous super absorbent polymer of claim 1 ,wherein ...

CROSSLINKING COMPOUND, METHOD FOR SYNTHESIZING SAME, LIQUID COMPOSITION COMPRISING SAID CROSSLINKING COMPOUND, PROCESS FOR POLYMERIZING SAME, AND MATERIAL OBTAINED AFTER POLYMERIZATION OF SAID COMPOSITION

The invention relates to a crosslinking compound of formula (I) 11. The crosslinking compound as claimed in claim 1 , wherein said crosslinking compound has a solubility of greater than 20 g/L in a solution of (meth)acrylic monomer (M1).12. The crosslinking compound as claimed in claim 1 , wherein the group L has a molar mass of at least 200 g/mol preferably of at least 500 g/mol.13. The crosslinking compound as claimed in claim 1 , wherein said crosslinking compound has a retro-Diels-Alder temperature of less than 150° C.15. The synthetic process as claimed in claim 14 , wherein said process further comprises a step of purifying the crosslinking compound.16. A liquid composition comprising:a. a (meth)acrylic polymer (P1),b. a (meth)acrylic monomer (M1) or a blend of (meth)acrylic monomers, and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'c. a crosslinking compound as claimed in .'}17. The liquid composition as claimed in claim 16 , further comprising at least one radical initiator.18. The liquid composition as claimed in claim 16 , wherein said liquid composition has a dynamic viscosity of between 10 MPa*s and 10 000 mPa*s at 25° C.19. The liquid composition as claimed in claim 16 , wherein the amount of crosslinking compound in the composition is less than 10 phr claim 16 , relative to the sum of the (meth)acrylic monomer (M1) and of the (meth)acrylic polymer (P1).20. The liquid composition as claimed in claim 16 , wherein the (meth)acrylic polymer (P1) comprises at least 70% by weight of methyl methacrylate (MMA).21. The liquid composition as claimed in claim 16 , wherein the amount of free conjugated diene/dienophile compounds claim 16 , capable of forming a Diels-Alder adduct claim 16 , is less than 5 phr claim 16 , relative to the sum of the (meth)acrylic monomer (M1) and of the (meth)acrylic polymer (P1).22. (canceled)23. (canceled)24. A manufacturing formulation comprising the liquid composition of wherein said formulation is selected from the group ...

Water-absorbent resin, soil water-retaining material, and agricultural/horticultural material

There is provided a water-absorbent resin that exhibits both high water absorbency and high water-discharge capacity. The water-absorbent resin of the present invention is a water-absorbent resin comprising a polymer of a water-soluble ethylenically unsaturated monomer, wherein when a cross-sectional image of the water-absorbent resin is observed using X-ray computed tomography, the water-absorbent resin has a ratio of the area of cavity portions (cavity area ratio) in the cross-sectional image of 5% or more, as calculated according to Equation (I): cavity area ratio [%]={total cross-sectional area of cavity portions ( B ) in the water-absorbent resin/(total cross-sectional area of resin portions ( A ) in the water-absorbent resin+total cross-sectional area of cavity portions ( B ) in the water-absorbent resin)}×100  (I).

ENERGY CURABLE INKJET INKS AND COATING COMPOSITIONS

The present invention is directed to energy curable inkjet inks or coating compositions, comprising Michael addition reaction products of primary and secondary alkanolamines with stoichiometric excesses of polyacrylates. Furthermore the inks and coating compositions contain less than 2.5% by weight phosphine oxide photoinitiators. The compositions are intended for the printing of food packaging, pharmaceutical packaging, cosmetics and personal care packaging, or other sensitive applications. 1. An energy curable inkjet ink or coating composition comprising:a) at least one aminoacrylate; andb) and at least one photoinitiator;wherein the total photoinitiator content is less than 12.0% by weight, and the total acyl phosphine oxide photoinitiator content is less than 4.0% by weight;wherein the ink or coating composition comprises less than 20% by weight of monofunctional monomer; and {'br': None, 'sup': '1', 'sub': n', '2n, 'HN(R)(CHOH)'}, 'wherein the aminoacrylate is prepared by the Michael addition reaction of a polyacrylate with an alkanolamine having the formula{'sup': '1', 'sub': m', '2m, 'wherein Ris H or (CHX);'}X is H or OH;m is 1 to 6, and n is 1 to 6.2. The ink or coating composition according to wherein the alkanolamine is selected from ethanolamine claim 1 , diethanolamine claim 1 , propanolamine and/or N-methylethanolamine.3. The ink or coating composition according to claim 1 , wherein the polyacrylate is selected from hexanediol diacrylate claim 1 , 3-methylpentanediol diacrylate claim 1 , dipropylene glycol diacrylate claim 1 , tripropyleneglycol diacrylate claim 1 , ethoxylated (3 moles) trimethylolpropane triacrylate claim 1 , propoxylated (3 moles) glyceryl triacrylate claim 1 , neopentyl glycol diacrylate claim 1 , decanediol diacrylate claim 1 , ethoxylated (2 moles) hexanediol diacrylate claim 1 , propoxylated (2 moles) neopentyl glycol diacrylate and/or propoxylated (3 moles) trimethylolpropane triacrylate.4. The ink or coating composition ...

Water-absorbing agent and method for producing same, and absorbent article produced using water-absorbing agent

Provided is a water-absorbing agent having an excellent ability to absorb and retain liquid and an excellent liquid suction power. The water-absorbing agent contains a polyacrylic acid (salt)-based water-absorbing resin as a main component and satisfies all of the following physical properties (a) to (e): (a) a weight average particle diameter (D50) is 300 μm or more and less than 400 μm; (b) a proportion of particles with a particle diameter of 600 μm or more and less than 850 μm is less than 10 weight %; (c) an average gap radius is 100 μm or more and less than 180 μm; (d) a CRC is 28 g/g or more and less than 34 g/g; and (e) an AAP is 24 g/g or more.

METHODS FOR SYNTHESIS OF END-FUNCTIONALIZED POLYOLEFINS

A strategy for the synthesis of semi-telechelic polyethylene through the palladium diimine-catalyzed chain transfer polymerization of ethylene using various silanes as chain transfer agents is reported. Polymer molecular weight and end-group chemical structure can be tuned by varying the chain transfer agent as well as its concentration. NMR spectroscopy confirms that the silicon of the chain transfer agent is incorporated into the polymer. The stability of the catalyst toward polar monomer enables the chain transfer polymerization of semi-telechelic poly(ethylene-methyl acrylate) copolymers. 1. A method for preparing an end-functionalized polyolefin by a chain transfer polymerization (CTP) comprising:{'sub': '3', 'combining a tertiary silane chain transfer agent (CTA) of formula HSiR, a late transition metal catalyst, and an olefin, to provide a reaction mixture;'}wherein each R of the CTA is independently an organic moiety, the late transition metal catalyst is substantially non-oxyphilic, the olefin comprises an optional functional group; and{'sub': '3', 'the rate of the CTP is regulated by the substituents on the CTA, the degree of polymerization (DP) is regulated by the concentration of the CTA in the reaction mixture, and the reaction mixture provides an end-functionalized polyolefin having an end group comprising a silane moiety of formula —SiR.'}2. The method of wherein the end functionalized polyolefin is a semitelechelic or a heterotelechelic polymer having a number average molar mass (M) and a dispersity (D stroke) that is modulated by the substituents on the CTA.3. The method of wherein each substituent R of the silane moiety at one end of the prepared semitelechelic or the heterotelechelic polymer is independently an alkyl claim 2 , branched alkyl claim 2 , unsaturated alkyl claim 2 , cycloalkyl claim 2 , alkoxy claim 2 , hydroxy claim 2 , aryl claim 2 , heteroaryl claim 2 , aryloxy claim 2 , heteroarlyoxy claim 2 , an oligomer claim 2 , or polymer ...

Method Of Preparing Superabsorbent Polymer

A superabsorbent polymer according to the present invention has excellent initial absorption properties, and thus it may be used in sanitary materials such as diapers, etc., thereby exhibiting excellent performances. 1. A method of preparing a superabsorbent polymer , the method comprising the following steps of:performing crosslinking polymerization of a water-soluble ethylene-based unsaturated monomer having acidic groups which are at least partially neutralized in the presence of an internal crosslinking agent and a surfactant to form a hydrogel polymer containing a first crosslinked polymer (Step 1);drying, pulverizing, and size-sorting the hydrogel polymer to form a base polymer powder (Step 2); andperforming surface-crosslinking of the base polymer powder by heat treatment in the presence of a surface crosslinking solution to form superabsorbent polymer particles (Step 3),wherein a maximum foaming point reaches within 100 seconds from a polymerization initiation point of the water-soluble ethylene-based unsaturated monomers in Step 1.2. The method of claim 1 , wherein Step 1 is performed additionally in the presence of a foaming agent.3. The method of claim 2 , wherein the foaming agent is one or more selected from the group consisting of sodium bicarbonate claim 2 , sodium carbonate claim 2 , potassium bicarbonate claim 2 , potassium carbonate claim 2 , calcium bicarbonate claim 2 , calcium carbonate claim 2 , magnesium bicarbonate claim 2 , magnesium carbonate claim 2 , 2 claim 2 ,2′-azobis(2-methylpropionamidine) dihydrochloride claim 2 , azodicarbonamide claim 2 , dinitroso pentamethylene tetramine claim 2 , p claim 2 ,p′-oxybisbenzenesulfonylhydrazide claim 2 , and p-toluenesulfonyl hydrazide.4. The method of claim 1 , wherein the surfactant is a compound represented by the following Chemical Formula 2 or sugar ester:{'br': None, 'sub': '3', 'R—SONa\u2003\u2003[Chemical Formula 2]'}in Chemical Formula 2,R is an alkyl group having 8 to 16 carbon atoms.5. ...

INK COMPOSITION FOR 3D PRINTING SUPPORTER AND 3D PRINTING PRODUCTION METHOD USING SAME

Disclosed is an ink composition for a 3D printing supporter and a 3D printing production method using the same, in which the ink composition is usable for an inkjet 3D printer, has excellent jetting properties and is easily dissolved in water after curing so that a supporter can be easily removed. The ink composition for a 3D printing supporter comprises: an amine-containing monomer, a curing agent, and a water-soluble polymer having an amine-containing polymer. 1. An ink composition for a 3D printing supporter comprising:an amine-containing monomer;a curing agent; anda water-soluble polymer containing an amine-containing polymer.2. The ink composition for a 3D printing supporter according to claim 1 , characterized in that the content of the amine-containing monomer is 10 to 99.9% by weight based on the total weight of the ink composition for a 3D printing supporter.3. The ink composition for a 3D printing supporter according to claim 1 , characterized in that the content of the curing agent is 0.01 to 20% by weight based on the total weight of the ink composition for a 3D printing supporter.4. The ink composition for a 3D printing supporter according to claim 1 , characterized in that the content of the water-soluble polymer is 0.01 to 30% by weight based on the total weight of the ink composition for a 3D printing supporter.5. The ink composition for a 3D printing supporter according to claim 1 , characterized in that the amine-containing monomer is a monomer having 1 to 30 carbon atoms and containing at least one amine group.6. The ink composition for a 3D printing supporter according to claim 1 , characterized in that the amine-containing monomer is selected from the group consisting of N claim 1 ,N-dimethylacrylamide claim 1 , diacetone acrylamide claim 1 , N-[3-(dimethylamino)propyl]methacrylamide claim 1 , N-methyl-N-vinylacetamide claim 1 , 2-(dimethylamino)ethylacrylate claim 1 , N-vinylpyrrolidone claim 1 , 4-acryloylmorpholine claim 1 , N- ...

ADHESIVE COMPOSITION AND HEAT-FUSIBLE MEMBER USING SAME

An adhesive composition having high room-temperature peel strength, high hot peel strength, and excellent adhesion, as well as excellent electrolyte resistance even when used for packaging materials for lithium ion batteries is provided, which contains an organic solvent, a polyolefin (A) that has an acidic group and/or an acid anhydride group and is soluble in the organic solvent, and an isocyanate compound, wherein the isocyanate compound comprises (B) a diisocyanate compound having a C4-7 hydrocarbon group and/or a derivative thereof, and (C) a diisocyanate compound having a C8-14 hydrocarbon group and/or a derivative thereof; and a heat-fusible member using the adhesive composition is also provided. 2. The adhesive composition according to claim 1 , wherein the diisocyanate compound having a hydrocarbon group with 4 to 7 carbon atoms is hexamethylene diisocyanate.3. The adhesive composition according to claim 1 , wherein the diisocyanate compound having a hydrocarbon group with 8 to 14 carbon atoms is a diisocyanate compound having at least one secondary isocyanate group.4. The adhesive composition according to claim 1 , herein the diisocyanate compound having a hydrocarbon group with 8 to 14 carbon atoms is isophorone diisocyanate.5. The adhesive composition according to claim 1 , wherein the derivative of the diisocyanate compound having a hydrocarbon group with 4 to 7 carbon atoms and/or the derivative of the diisocyanate compound having a hydrocarbon group with 8 to 14 carbon atoms comprise at least one bond selected from the group consisting of an isocyanurate bond claim 1 , a biuret bond claim 1 , a urethane bond and an allophanate bond.6. The adhesive composition according to claim 1 , wherein the component (A) is a polyolefin graft-modified with an acidic group-containing monomer and/or an acid anhydride group-containing monomer claim 1 , and an graft amount thereof is 0.10 to 30 wt %.7. The adhesive composition according to claim 1 , wherein the ...

Preparation of Phosphoric Acid

The invention relates to a method for the industrial preparation of phosphoric acid from an aqueous suspension comprising water and particles of at least one phosphate material dispersed in the presence of at least one additive of the anionic polymer type. Phosphoric acid is obtained by treating this suspension with at least one strong acid. The polymer is obtained by polymerization reaction of at least one acid selected from acrylic acid, methacrylic acid and salts thereof. 1. A method for preparing phosphoric acid comprising treating at a temperature ranging from 40 to 100° C. , by means of at least one strong acid , an aqueous suspension (A) comprising water and particles of at least one phosphate material whose size is between 10 and 400 μm , and dispersed in the presence of at least one anionic polymer with a molecular mass by weight (M) of between 1 ,000 and 90 ,000 g/mol and obtained by polymerization reaction of at least one acid chosen from acrylic acid , methacrylic acid and salts thereof.2. The preparation method as claimed in claim 1 , wherein the Brookfield viscosity of the aqueous suspension (A) claim 1 , measured 90 s after preparation of the suspension claim 1 , at 25° C. claim 1 , at 100 rpm and at a concentration of more than 45% by weight of phosphate material claim 1 , preferably more than 60% by weight of phosphate material claim 1 , is less than 1 500 mPa·s or less than 1 claim 1 ,200 mPa·s claim 1 , preferably less than 1 claim 1 ,000 mPa·s claim 1 , more preferentially less than 500 mPa·s or even less than 350 mPa·s or less than 200 mPa·s.3. The preparation method as claimed in claim 1 , wherein the strong acid used is selected from sulfuric acid claim 1 , nitric acid claim 1 , hydrochloric acid claim 1 , and a mixture of these acids.4. The preparation method as claimed in claim 1 , wherein the strong acid used is sulfuric acid.5. The preparation method as claimed in claim 1 , wherein the prepared phosphoric acid has a POtiter of more than 25 ...

PVDF BINDERS FOR GRAPHITE/SILICON ANODES

The present invention pertains to vinylidene fluoride copolymers comprising recurring units derived from hydrophilic (meth)acrylic monomers and from perhalogenated monomers and to their use as binders for silicon negative electrodes. 2. The composition (C) according to claim 1 , wherein the at least one hydrophilic (meth)acrylic monomers (MA) of formula (I) is selected from the group consisting of acrylic acid (AA) claim 1 , (meth)acrylic acid claim 1 , hydroxyethyl(meth)acrylate (HEA) claim 1 , 2-hydroxypropyl acrylate (HPA) claim 1 , hydroxyethylhexyl(meth)acrylate claim 1 , and mixtures thereof.3. The composition (C) according to claim 1 , wherein the perhalogenated monomer (FM) is selected from the group consisting of chlorotrifluoroethylene (CTFE) claim 1 , hexafluoropropylene (HFP) and tetrafluoroethylene (TFE).5. The composition (C) according to wherein polymer (F) has intrinsic viscosity claim 1 , measured in dimethylformamide at 25° C. claim 1 , lower than 0.70 l/g.6. The composition (C) according to claim 1 , wherein the at least one hydrophilic (meth)acrylic monomer (MA) is comprised in an amount of from 0.2 to 1.0 mole % with respect to the total moles of recurring units of polymer (F) claim 1 , and the at least one perhalogenated monomer (FM) is comprised in an amount of from 0.5 to 3.0% mole with respect to the total moles of recurring units of polymer (F).7. The composition (C) according to claim 1 , wherein the powdery electrode material comprising at least one silicon material comprises a carbon-based material and a silicon-based compound.8. The composition (C) according to wherein the carbon-based material is graphite and the silicon-based compound is selected from the group consisting of chlorosilane claim 7 , alkoxysilane claim 7 , aminosilane claim 7 , fluoroalkylsilane claim 7 , silicon claim 7 , silicon chloride claim 7 , silicon carbide and silicon oxide.9. The composition (C) according to wherein the at least one silicon material is ...

FIBERGLASS INSULATION PRODUCT

A fibrous insulation product comprising a plurality of randomly oriented glass fibers and a cross-linked formaldehyde-free binder composition at least partially coating the fibers is disclosed. The cross-linked formaldehyde-free binder composition is formed from an aqueous binder composition comprising 5.0% by weight to 37.0% by weight of at least one monomeric polyol having at least four hydroxyl groups and at least 50.0% by weight of a cross-linking agent comprising a polymeric polycarboxylic acid having at least two carboxylic acid groups, based on the total solids content of the aqueous binder composition. The glass fibers have an average fiber diameter in the range of 8 HT to 12 HT. The fibrous insulation product, after curing, has a density, when uncompressed, in the range of 0.30 pcf to 2.7 pcf. 1. A fibrous insulation product comprising:a plurality of randomly oriented glass fibers; and 5.0% by weight to 37.0% by weight of at least one monomeric polyol having at least four hydroxyl groups, based on the total solids content of the aqueous binder composition; and', 'at least 50.0% by weight of a cross-linking agent comprising a polymeric polycarboxylic acid having at least two carboxylic acid groups, based on the total solids content of the aqueous binder composition, wherein said binder composition has a ratio of molar equivalents of carboxylic acid groups to hydroxyl groups is between 0.60/1.0 and 1.0/0.6,, 'a cross-linked formaldehyde-free binder composition at least partially coating the fibers, wherein the cross-linked formaldehyde-free binder composition is formed from an aqueous binder composition comprisingwherein the quantity of cross-linked formaldehyde-free binder is in the range of 2% to 10% by weight of the fibrous insulation product;wherein the R-value of the fibrous insulation product is in the range of 10 to 54; andwherein the glass fibers have an average fiber diameter in the range of 8 HT to 12 HT;wherein the fibrous insulation product, after ...

Use of a gel-like polymer composition which can be obtained by polymerizing an acid group-containing monomer in the presence of a polyether compound in formulations for automatic dishwashing

The invention relates to the use of a gel-like polymer composition, which is produced by means of a radical polymerization of an [alpha],[beta]-ethylenically unsaturated acid in the presence of at least one polyether component, in formulations for automatic dishwashing (ADW).

POLYMERIZABLE COMPOSITION FOR OPTICAL ARTICLE AND OPTICAL ARTICLE

Provided is a polymerizable composition for an optical article including a photochromic compound, a component A: an acyclic methacrylate having a molecular weight of 500 or more, and a component B: a (meth)acrylate having a molecular weight of 400 or less and represented by Formula 1. In Formula 1, Rand Reach independently represent a hydrogen atom or a methyl group, m represents an integer of 1 or more. 2. The polymerizable composition according to claim 1 , further comprisinga component C: an acyclic tri- or higher-functional (meth)acrylate.3. The polymerizable composition according to claim 1 , further comprisinga component D: a polymerizable compound having a viscosity of 100 cP or less and selected from the group consisting of (meth)acrylates and vinyl ether.4. The polymerizable composition according to claim 1 ,wherein the composition contains 50.0 mass % or more of the component A based on a total amount of the polymerizable compounds contained in the composition.5. The polymerizable composition according to claim 1 ,wherein the composition contains 5.0 mass % or more and 30.0 mass % or less of the component B based on a total amount of the polymerizable compounds contained in the composition.6. An optical article claim 1 , comprising:a substrate; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a photochromic layer obtained by curing the polymerizable composition according to .'}7. The optical article according to claim 6 , which is a spectacle lens.8. The optical article according to claim 6 , which is a goggles lens.9. The optical article according to claim 6 , which is a visor of a sun visor.10. The optical article according to claim 6 , which is a shield member of a helmet.11. Eyeglasses including the spectacle lens according to . This application is a Continuation of PCT International Application No. PCT/JP2020/047318 filed on Dec. 18, 2020, which was published under PCT Article 21(2) in Japanese and claims priority under 35 U.S.C. § 119(a) to ...

Method for producing photocured three-dimensional stereoscopic shaped object

A process for producing a photocured three-dimensional stereoscopic shaped object includes ejecting and applying a droplet of a photocurable resin composition (A) having a viscosity of 20 mPa·s to 500 Pa·s at 23° C. using a non-contact dispenser, wherein the droplet has a volume of 1 nL or more.

SYNERGISTIC COMBINATION FOR INHIBITING POLYMERIZATION

A synergistic polymerization inhibitor composition, the composition having a copper salt, and a manganese salt; a copper salt or a manganese salt, and a cationic polymer; or a phenothiazine and a manganese salt. A method for inhibiting polymerization of unsaturated polymerizable monomers, the method providing adding a synergistic polymerization inhibitor composition to an methacrylic acid manufacturing system or component thereof, the composition having a copper salt, and a manganese salt; a copper salt or a manganese salt, and a cationic polymer; or a phenothiazine and a manganese salt. 17-. (canceled)8. The synergistic polymerization inhibitor composition , the composition comprising:a copper compound or a manganese compound; anda cationic polymer.9. The composition as recited in claim 8 , wherein the copper compound is a copper salt selected from the group consisting of copper (II) acetate claim 8 , copper (II) oxide claim 8 , copper (II) sulfate claim 8 , copper (II) chloride claim 8 , copper (II) dithiocarbamate claim 8 , copper (II) formate claim 8 , copper (II) propionate claim 8 , and copper (II) oleate.10. The composition as recited in claim 8 , wherein the manganese compound is a manganese salt selected from the group consisting of manganese (II) acetate claim 8 , manganese (II) oxide claim 8 , manganese (II) sulfate claim 8 , manganese (II) chloride claim 8 , manganese (II) dithiocarbamate claim 8 , manganese (II) acetylacetonate claim 8 , manganese (II) formate claim 8 , manganese (II) propionate claim 8 , manganese (II) oleate claim 8 , tricarbonyl(methylcyclopentadienyl)manganese claim 8 , cyclopentadienyl manganese tricarbonyl claim 8 , or combinations thereof.11. The composition as recited in claim 8 , wherein the cationic polymer has molecular weight greater than 500.12. The composition as recited in claim 8 , wherein the cationic polymer comprises a plurality of repeating units claim 8 , and wherein at least 20% of the repeating units are ...

Super Absorbent Polymer and Method for Preparing Same

The present disclosure relates to a super absorbent polymer having a high water content and a method for preparing the same. The super absorbent polymer according to the present disclosure has a relatively high water content compared to a conventional one but has no degradation in absorption-related physical properties, and thereby can be used in various fields. 1. A method for preparing a super absorbent polymer , comprising:A) performing crosslinking polymerization of a water-soluble ethylenically unsaturated monomer having an acidic group of which at least a part is neutralized, in the presence of a polymerization initiator and an internal crosslinking agent to form a hydrogel polymer;B) drying, pulverizing and size-sorting the hydrogel polymer to form a base polymer powder;C) surface-crosslinking the base polymer powder through heat treatment in the presence of a surface crosslinking agent to form super absorbent polymer particles; andD) performing wetting by exposing the super absorbent polymer particles under conditions of a relative humidity of 50 RH % or more and less than 80 RH % and a temperature of 40° C. or more and less than 80° C.2. The preparation method according to claim 1 , {'br': None, 'sub': '1', 'sup': '1', 'R-COOM\u2003\u2003[Chemical Formula 1]'}, 'wherein the ethylenically unsaturated monomer is a compound represented by the following Chemical Formula 1in the Chemical Formula 1,{'sub': '1', 'Ris an alkyl group having 2 to 5 carbon atoms containing an unsaturated bond, and'}{'sup': '1', 'Mis a hydrogen atom, a monovalent or divalent metal, an ammonium group or an organic amine salt.'}3. The preparation method according to claim 1 ,wherein the internal crosslinking agent includes one or more of N,N′-methylenebisacrylamide, trimethylolpropane tri(meth)acrylate, ethylene glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, polypropylene glycol di(meth)acrylate, butanediol di(meth)acrylate, diethylene ...

METHOD FOR PRODUCING ABSORBENT ARTICLES COMPRISING WATER-ABSORBING RESIN

Provided is a method for producing an absorbent article comprising a water-absorbing resin having an excellent initial water absorption speed under load even substantially without adding a liquid permeability enhancer. 1. A method for producing an absorbent article comprising a surface-crosslinked particulate poly(meth)acrylic acid (salt)-based water-absorbing resin , said method comprising the steps of:(i) preparing a (meth)acrylic acid (salt)-based aqueous monomer solution;(ii) polymerizing the (meth)acrylic acid (salt)-based aqueous monomer solution;(iii) carrying out gel-crushing of a crosslinked hydrogel polymer generated during or after the polymerization to obtain a particulate hydrogel;(iv) drying the particulate hydrogel to obtain a dried polymer;(v) pulverizing and/or classifying the dried polymer to obtain a particulate water-absorbing resin before surface-crosslinking;(vi) surface-crosslinking the particulate water-absorbing resin before surface-crosslinking; and(vii) incorporating the surface-crosslinked particulate water-absorbing resin in an absorbent article, whereinin the step (i) and/or the step (ii), water-soluble polyalkylene glycol having a weight average molecular weight of not more than about 2000 is added to the aqueous monomer solution so that a total amount of the water-soluble polyalkylene glycol added in the step (i) and/or the step (ii) is about 0.01 mass % to about 1 mass % relative to a total mass of a monomer included in the aqueous monomer solution,the crosslinked hydrogel polymer has a centrifuge retention capacity of not more than about 31 g/g and not less than about 20 g/g, andthe surface-crosslinked particulate poly(meth)acrylic acid (salt)-based water-absorbing resin obtained by said method satisfies (1) to (4) below:(1) a centrifuge retention capacity (CRC) of not less than about 20 g/g and not more than about 35 g/g;(2) an absorption against pressure (AAP), measured under a load of about 0.7 psi, of not less than about 25 g/g ...

Superabsorbent material absorbent capacity increase with use of multifunctional chemical agents

The present invention discloses a method for increasing absorbent capacity of a superabsorbent material (SAM) by treating the SAM with a selected multifunctional chemical agent (MCA) or a combination of a plurality of selected MCAs. The selected MCA(s) may interact with the polymer chain of the SAM through one or a plurality of mechanisms that enhance the absorbent capacity of the SAM. In various preferred embodiments, SAMs include polyelectrolytes that are made from polymerizing mixtures of acrylic acid monomer and acrylic acid sodium salt, and L-arginine or lysine is selected as the MCA.

LUBRICIOUS HYDROPHILIC COATINGS AND METHODS OF FORMING THE SAME

Self-crosslinking hydrophilic coatings. 1. A hydrophilically coated medical device , comprising:a medical device having a surface; anda hydrophilic coating disposed on the surface of the medical device, the hydrophilic coating comprising a hydrophilic polymer and metal crosslinker.2. The medical device of wherein the hydrophilic coating further comprises acetylacetone.3. The medical device of wherein the metal comprises one or more of titanium claim 1 , aluminum claim 1 , zinc claim 1 , and any other suitable metal.4. The medical device of wherein the hydrophilic polymer comprises polyvinylpyrrolidone.5. The medical device of wherein the hydrophilic polymer comprises polyethylene oxide.6. The medical device of wherein the hydrophilic polymer comprises a copolymer comprising polyvinylpyrrolidone or polyethylene oxide.7. The medical device of wherein the hydrophilic polymer comprises a copolymer comprising a carboxylic acid functional group.8. The medical device of wherein the carboxylic acid is acrylic acid or methacrylic acid.9. The medical device of wherein the hydrophilic polymer comprises a copolymer comprising a monomer having a functional hydroxyl group.10. The medical device of wherein the monomer comprises hydroxyethylacrylate and/or hydroxyethylmethacrylate.11. A hydrophilically coated medical device claim 9 , comprising:a medical device having a surface; anda hydrophilic coating disposed on the surface of the medical device, the hydrophilic coating comprising a hydrophilic polymer and by-products of a metal chelating crosslinker.12. The method of wherein the chelating crosslinker comprises a metal acetylacetonate crosslinker.13. The medical device of wherein the by-product of the metal chelating crosslinker comprises acetylacetonate.14. The medical device of wherein the by-product of the metal chelating crosslinker comprises a metal.15. The medical device of wherein the metal comprises one or more of titanium claim 14 , aluminum claim 14 , zinc claim 14 , ...

CLASSIFICATION PROCESS FOR SUPERABSORBENT POLYMER PARTICLES

The invention relates to a classification process for superabsorbent polymer particles, comprising classifying the water-absorbent polymer particles in a screen machine under reduced pressure wherein the pressure above the uppermost sieve is from 0 to 4.0 mbar per sieve higher than below the undermost sieve. 1. A classification process for superabsorbent polymer particles , wherein the water-absorbent polymer particles are classified by using a screen machine under reduced pressure and a pressure above an uppermost sieve is from 0 to 4.0 mbar per sieve higher than the pressure below the undermost sieve.2. The process according to claim 1 , wherein the pressure above the uppermost sieve is from 0.25 to 2.5 mbar per sieve higher than the pressure below the undermost sieve.3. The process according to claim 1 , wherein the above the uppermost sieve is at least 2 mbar below ambient pressure.4. The process according to claim 1 , wherein a product fraction is removed by of at least two screens of different mesh sizes.5. The process according to claim 1 , wherein an oversize is removed by means of at least two screens of different mesh sizes.6. The process according to claims 1 , wherein the superabsorbent polymer particles claims 1 , during the classification claims 1 , have a temperature of from 40 to 120° C.7. The process according to claim 1 , wherein the superabsorbent polymer particles are flowed over by a gas stream during the classification.8. The process according to claim 7 , wherein the water content of the gas stream is less than 5 g/kg.9. The process according to claim 7 , wherein the gas stream has a temperature of at least 40° C.10. The process according to claim 7 , wherein the gas stream is air.11. The process according to claim 1 , wherein screen machine is partly or wholly thermally insulated.12. The process according to claim 1 , wherein a proportion of acrylic acid in the total amount of ethylenically unsaturated monomer in the superabsorbent polymer ...

SYSTEM AND METHOD FOR THE PRODUCTION OF A BIOLOGICAL MESH

The present disclosure provides a system and method for generating a biological mesh. In one embodiment, the biological mesh comprises one or more heat shock protein domains, where the one or more heat shock protein domains comprise at least a portion of a C-terminus of a Hsp48 protein. The biological mesh further comprises a polymeric material having a negative charge, the polymeric material comprising polyphosphate having a number of monomer units [PO], wherein n is greater than 100. 1. A biological mesh , the biological mesh comprising:{'i': 'Dictyostelium discoideum', 'one or more heat shock protein domains, wherein the one or more heat shock protein domains comprise at least a portion of a C-terminus of a Hsp48 protein; and'}{'sub': 3', 'n, 'sup': '−', 'a polymeric material having a negative charge, the polymeric material comprising polyphosphate having a number of monomer units [PO], wherein n is greater than 100.'}2. The biological mesh of claim 1 , wherein the polymeric material polyphosphate having a number of monomer units [PO] claim 1 , wherein n ranges from 200-2000.3. The biological mesh of claim 1 , wherein the heat shock protein domain further comprises an alpha-crystalline domain and an intrinsically disordered region.4Dictyostelium discoideum. The biological mesh of claim 1 , wherein the heat shock protein comprises a Hsp48 protein.5Dictyostelium discoideum. The biological mesh of claim 1 , wherein the C-terminus domain comprises residues 138-416 of the Hsp48 protein.6. The biological mesh of claim 1 , wherein the biological mesh further comprises a therapeutic substance.7. The biological mesh of claim 1 , wherein the therapeutic substance is coupled to the one or more heat shock protein domains.8. The biological mesh of claim 1 , wherein the therapeutic substance is coupled to the polymeric material.9. The biological mesh of claim 1 , wherein the therapeutic substance is entrained within the biological mesh.10. The biological mesh of claim 6 , ...

Polyacrylic acid (salt), polyacrylic acid (salt)-based water-absorbing resin, and process for producing same

Disclosed are a polyacrylate (salt) and a polyacrylate (salt) water-absorbent resin containing a tracer which can be verified back to the manufacturing process of the water-absorbent resin when dealing with various problems with the water-absorbent resin which can occur from the manufacturing process of the water-resistant resin, during the use thereof by a consumer, up until the disposal thereof. The disclosed polyacrylate (salt) and the polyacrylate (salt) water-absorbent resin have a carbon stable isotope ratio (δ 13 C) of at least −20‰ when measured by accelerator mass spectrometry.

Method for producing semiconducting single-walled carbon nanotube dispersion

A method for producing a semiconducting SWCNT dispersion of the present invention comprises: a step A of preparing a to-be-separated SWCNT dispersion that includes a SWCNT mixture, an aqueous medium, and a polymer including a structural unit A derived from a monomer represented by Formula (1), and a step B of centrifuging the to-be-separated SWCNT dispersion and subsequently collecting a supernatant including the semiconducting SWCNT from the centrifuged to-be-separated SWCNT dispersion. The weight-average molecular weight of the polymer is 1,000 or more and 100,000 or less.