ПОСТОЯННО СМАЧИВАЕМЫЕ СВЕРХПОГЛОЩАЮЩИЕ МАТЕРИАЛЫ

Разработаны способы получения постоянно смачиваемого сверхпоглощающего материала. Постоянно смачиваемые сверхпоглощающие материалы, полученные этими способами, имеют время пребывания на плаву, составляющее менее 30 секунд, и вызывают уменьшение поверхностного натяжения солевого раствора менее чем приблизительно на 30%. Эти способы предусматривают обработку сверхпоглощающего материала раствором поверхностно-активного вещества. Используют поверхностно-активное вещество, которое имеет, по меньшей мере, одну функциональную группу, которая способна вступать в химическую реакцию со сверхпоглощающим материалом, и, по меньшей мере, одну нереакционноспособную и гидрофильную функциональную группу. Поверхностно-активное вещество наносят на сверхпоглощающий материал, когда функциональные группы на поверхности сверхпоглощающего материала активированы. Также представлены постоянно смачиваемые сверхпоглощающие материалы, такие как волокна, полученные этим способом, а также одноразовые поглощающие изделия ...

ВОДОПОГЛОЩАЮЩИЙ МАТЕРИАЛ, ВОДОПОГЛОЩАЮЩЕЕ ИЗДЕЛИЕ И СПОСОБ ПОЛУЧЕНИЯ ВОДОПОГЛОЩАЮЩЕГО МАТЕРИАЛА

Изобретение относится к водопоглощающим материалам и изделиям из них. Техническая задача - разработка водопоглощающего материала, имеющего незначительное количество остаточного мономера, незначительное изменение количества остаточного мономера в диапазоне распределения частиц по размерам и подходящие абсорбционные свойства, пригодного для производства санитарно-гигиенического материала; и способа его получения. Предложены варианты водопоглощающего материала в виде частиц, включающего в качестве главного компонента водопоглощающий полимер, имеющий сетчатую структуру из звеньев, полученных из ненасыщенной карбоновой кислоты и/или ее соли, который получают поверхностной сшивающей обработкой. Водопоглощающий материал настоящего изобретения содержит остаточный мономер в количестве не выше чем 500 ч/млн и индекс остаточного мономера имеет значение не больше чем 0,30. Предложенный способ получения водопоглощающего материала включает получение гидрогельного полимера с помощью полимеризации водного ...

КОМПОЗИЦИЯ, СОДЕРЖАЩАЯ СВЕРХВПИТЫВАЮЩИЙ ПОЛИМЕР

Группа изобретений относится к строительству. Технический результат - снижение или исключение захвата воздуха композицией покрытия, снижение или исключение использования целлюлозных загустителей. Текстурная композиция для текстурирования подложки содержит несхватывающийся минерал; сверхвпитывающий полимер, который может поглощать по меньшей мере примерно в 50 раз больше собственной массы и имеет размер частиц примерно 250 микрон или менее; воду, при этом указанная текстурная композиция по существу не содержит вяжущего материала схватывающегося типа, причем композиция затвердевает при высушивании, и при этом указанная текстурная композиция имеет вязкость примерно от 150 примерно до 800 единиц Брабендера. 3 н. и 16 з.п. ф-лы, 6 табл., 2 пр.

ГРАНУЛИРОВАННЫЙ ВОДОПОГЛОЩАЮЩИЙ АГЕНТ НА ОСНОВЕ ВОДОПОГЛОЩАЮЩЕЙ СМОЛЫ, СПОСОБ ПОЛУЧЕНИЯ АГЕНТА И ПОГЛОЩАЮЩЕЕ ИЗДЕЛИЕ

... 1. Гранулированный водопоглощающий агент, содержащий частицы водопоглощающей смолы в качестве основного компонента, который получают полимеризацией ненасыщенного мономера, содержащего кислотную группу и/или ее соль, причем этот агент представляет собой частицы, по меньшей мере, почти сферической формы, агрегаты частиц и агрегаты, полученные из частиц почти сферической формы, и водопоглощающий агент имеет следующие характеристики: (a) удерживаемая емкость при центрифугировании (CRC) в физиологическом растворе составляет не меньше 32 г/г; (b) среднемассовый размер частиц (D50) составляет не менее 200 мкм и не больше 400 мкм; (c) доля частиц, имеющих диаметр меньше чем 150 мкм, составляет не менее 0 мас.% и не более 5 мас.%; и (d) содержание летучих органических соединений при измерении концентрации в атмосфере с помощью трубки газового детектора, составляет не менее 0 ч./млн и не более 100 ч./млн. 2. Гранулированный водопоглощающий агент, содержащий частицы водопоглощающеи смолы в качестве ...

SAUGFÄHIGER WEGWERFARTIKEL

ULTRADÜNNE MATERIALIEN AUS FASER UND SUPERABSORBER

Vorrichtung zum Entwässern von vorzugsweise Hydraulikflüssigkeit

Eine Reihe von Flüssigkeiten darf für eine ordnungsgemäße Nutzbarkeit kein Wasser enthalten. Es besteht die Aufgabe, diese Flüssigkeiten zu entwässern. Dies erfolgt erfindungsgemäß dadurch, dass entwässertes Zeolith in die Flüssigkeit eingebracht wird. Dieses bindet das Wasser.

ADSORBENS UND DESSEN VERWENDUNG IN WÄRMESPEICHERN UND WÄRMEPUMPEN BZW. KÄLTEMASCHINEN

Verfahren zur Herstellung wasserabsorbierender Polymerpartikel

Verfahren zur Herstellung wasserabsorbierender Polymerpartikel, umfassend die Schritte DOLLAR A i) Trocknung eines Hydrogels, DOLLAR A ii) Abtrennung unvollständig getrockneter Polymerpartikel aus dem getrockneten Hydrogel und DOLLAR A iii) Trocknung der abgetrennten unvollständig getrockneten Polymerpartikel, DOLLAR A wobei die abgetrennten unvollständig getrockneten Polymerpartikel vor der Trocknung iii) zerkleinert werden.

Filtereinrichtung zur Aufnahme von Partikeln und Wasser

Filtereinrichtung zur Aufnahme von Partikeln und Wasser mit einem mehrlagigen Aufbau zur Filterung der Partikel und einer quellfähigen Substanz zur Aufnahme des Wassers, wobei die quellfähige Substanz in Quellräume eingebracht ist, die zwischen mindestens zwei Lagen des mehrlagigen Aufbaus vorgesehen sind, dadurch gekennzeichnet, dass ein, aus einem mehrlagigen Aufbau bestehender Außenfilter (2) einen zylinderförmigen Hohlraum (10) umschließt, in den ein weiterer mehrlagiger Aufbau eines Innenfilters eingesetzt ist, wobei der Innen- und/oder der Außenfilter die quellfähige Substanz (9) zwischen mindestens zwei Lagen des jeweiligen mehrlagigen Aufbaus enthält.

Absorbent product

An absorbent string (1) is comprised of a plurality of absorbent products (2). Each product has a tubular envelope which is generally flat in use and contains absorbent material (4). The latter will normally have super absorber in its composition. In use, the string (1) is placed by the side of an appliance such a freezer (5), whereby moisture from the appliance on the floor (51) can pass through the envelope and be absorbed by the absorbent material (4). Each product (2) has opposite ends (61, 62) that are complementarily shaped and are abutting with ends of adjacent products to form the absorbent string (1). The products (2) have an elongate chevron shape. The head end (61) of each chevron product is trapezoidal, with outer, converging side edges (611) and a leading, central edge (612). The opposite, tail end (62) of the chevron product has two outer jaws either side of a mouth (620), within which the head end (61) can fit, the mouth having outer side edges (621) diverging from a central ...

The preparation of super absorbent polymers

Superabsorbent composition

USE OF STRONGLY ABSORBING POLYMERS FOR THE TREATMENT OF RAW SKINS, COMPOSITIONS AND EQUIVALENT PROCEDURE AND TREATED SKINS IN SUCH A WAY

ADSORBENT AND ITS USE IN HEAT ACCUMULATORS AND HEAT PUMPS AND/OR REFRIDGERATORS

Absorbent articles comprising absorbent materials exhibiting deswell/reswell

The present invention relates to absorbent articles that include absorbent compositions which exhibit swelling, deswelling, and reswelling behavior. More specifically, absorbent compositions of this invention swell and absorb fluids after exposure to aqueous fluids, deswell and release fluids from the swollen absorbent compositions, and can also reswell and absorb fluids. The swelling-deswelling-reswelling behavior allows enhanced liquid distribution in absorbent composites and absorbent articles.

Particulate water absorbing agent and method for production thereof, and water absorbing article

Water-absorbent treatment material and production method for same

... [Problem] To provide a water-absorbent treatment material and a production method for same, whereby production at low cost is possible, with no decline in quality. [Solution] This water-absorbent treatment material (1) contains as a material paper powder obtained by separating gypsum from plasterboard. The proportion by weight of gypsum adhering to the paper powder, to the paper powder, is 5% or less.

POLYSACCHARIDE-INORGANIC COMPOSITE PARTICLES AS PERFORMANCE ADDITIVES FOR SUPERABSORBENT POLYMERS

The present invention relates to discrete particulate composite additives for superabsorbent polymers and includes a method of making same. The discrete particulate composite additives generally comprise a polysaccharide and an inert inorganic component. Advantageously, these discrete particulate composite additives functionally improve superabsorbent performance. They are suitable for a number of applications, including the use and manufacture of hygiene products.

ADSORBENT POLYMERIC STRUCTURES FOR SEPARATING POLAR LIQUIDS FROM NON-POLAR HYDROCARBONS

Adsorbent polymeric structures are described. These adsorbent polymeric structures are capable of separating non-polar hydrocarbons, such as crude oil or diesel fuel, from polar liquids, such as water. The adsorbent polymeric structures may include acid grafted graphene and at least one styrene. A method of preparing an adsorbent polymeric structure according may include mixing graphene and at least one acid catalyst in a polar liquid in the presence of at least one alcohol to form an acid grafted graphene via an esterification reaction; and the acid grafted graphene and at least one styrene monomer are introduced to water in the presence of an initiator to form the adsorbent polymeric structure according to any of the previously-described embodiments via an emulsion polymerization reaction. Moreover, the adsorbent polymeric structures may be incorporated into methods of fluidly separating at least one non-polar hydrocarbon from a polar liquid.

PROCESS FOR PRODUCING WATER-ABSORBING POLYMER HAVING CONTROLLED MOISTURE CONTENT

A water-absorbing polymer having a desirably controlled moisture content with a reduced variability from lot to lot and suitable for a shaped article having good characteristics is obtained by bringing a finely divided particle of water-absorbing polymer into contact with a stream of air having a moisture content of 2-20 g/m3 so that the moisture content in the polymer particle is increased by 300 ppm by weight or more to a moisture content of 300-50,000 ppm by weight. This moisture content-controlling treatment is carried out using a closed vessel wherein the air is fed, or using a pneumatic transportation apparatus wherein the air is fed, and the transportation and moisture content-control of polymer particle are conducted simultaneously.

Use of a foam or fibrous material permeated by a superabsorbent polymer, for retaining water, preferably rainwater, on roofs including flat roof, pitched roof or barrel roof of buildings and/or as a root substrate for cultivating plants

Use of a foam or fibrous material permeated by a superabsorbent polymer, for retaining water, preferably rainwater, on the roofs of buildings and/or as a root substrate for cultivating plants, is claimed. Independent claims are included for: (1) an open-pore filler containing polymer foam, comprising the superabsorbent polymer in a granular form and/or powder form, and at least one filler, where the superabsorbent polymer releases the adsorbed water; (2) preparing the open-pore filler containing polymer foam, comprising mixing the superabsorbent polymer and optionally further fillers and additives with the polyol to form a polyol component, which is then continuously mixed with a curing component to perform further reaction; (3) a roof structure, comprising a layer of foam or fibrous material, preferably a foam material as a retention layer to retain rain water on the roof and/or as a root of a substrate for a green roof; (4) a planting mat, preferably turf grasses or ground cover mat, ...

With a superabsorbent on building roofs through which passes water-retaining and/or polymer foam material as root substrate.

Die vorliegende Erfindung betrifft die Verwendung einer Körperlichkeit aus einem mit einem Superabsorber (SAP) durchsetzten Polymerschaum (6) zum Zurückhalten von Regenwasser auf Gebäudedächern und/oder als Wurzelsubstrat zum Kultivieren von Pflanzen. Durch die Verwendung solcher von einem Superabsorber (SAP) durchsetzten Polymerschäume als Retentionskörper für Regenwasser wird es möglich, sowohl flache als auch geneigte Gebäudedächer mit grosser Wasserspeicherkapazität und gleichzeitig grosser thermischer Trägheit zur Verfügung zu stellen, welche zudem, falls gewünscht, ohne Verwendung von Erde bepflanzt werden können. Auch wird es durch die Verwendung solcher von einem Superabsorber durchsetzten Polymerschäume als Wurzelsubstrat generell möglich, Pflanzen auf einfache Weise ohne Erde zu kultivieren, und zwar nicht nur auf horizontalen Flächen, sondern auch auf schrägen oder gar vertikalen Flächen.

MUCH STADIINOE GRINDING PRODUCTION OF VODOABSORBIRUYuShchIKh POLYMER PARTICLES

Method for the agglomeration of fine superabsorber particles

고흡수성 수지

... 본 발명은 보수능, 가압 흡수능, 통액성 및 겔 강도가 최적화되어, 전체적으로 균형 있고 보다 우수한 물성을 나타내는 고흡수성 수지에 관한 것이다. 이러한 고흡수성 수지는 적어도 일부가 중화된 산성기를 갖는 수용성 에틸렌계 불포화 단량체를 중합시킨 분말 형태의 베이스 수지를 표면 가교시킨 가교 중합체를 포함하는 고흡수성 수지로서, 원심분리 보수능(CRC), 가압 흡수능(AUP), 겔 강도(G') 및 생리 식염수 흐름 유도성(SFC) 등이 소정의 관계식을 충족할 수 있다.

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.

SUPER ABSORBENT POLYMER AND PREPARATION METHOD THEREOF

Water-absorbing polymer structure with improved absorption properties

ABSORBENT ARTICLES COMPRISING ABSORBENT MATERIALS EXHIBITING DESWELL/RESWELL

The present invention relates to absorbent articles that include absorbent compositions which exhibit swelling, deswelling, and reswelling behavior. More specifically, absorbent compositions of this invention swell and absorb fluids after exposure to aqueous fluids, deswell and release fluids from the swollen absorbent compositions, and can also reswell and absorb fluids. The swelling-deswelling-reswelling behavior allows enhanced liquid distribution in absorbent composites and absorbent articles.

FERTILISER COMPOSITION

This invention relates to a storage stable fertiliser composition in the form of pellets or granules comprising an organic fertiliser in admixture with a water absorbent polymer. This invention also relates to a process for producing a storage stable fertiliser composition, the process comprising: i) mixing an organic fertiliser and a water absorbent polymer to form a mixture; ii) pelletising or granulating the mixture; and iii) drying the pellets or granules for a time and under conditions sufficient to form a storage stable fertiliser composition.

METHOD FOR MANUFACTURING A WATER-ABSORBING RESIN

The disclosed continuous manufacturing method for a water-absorbing resin includes a plurality of connected continuous steps. Said method includes: a polymerization step in which an unsaturated monomer in an aqueous solution is polymerized; a drying step in which a water-containing cross-linked granular polymer gel, obtained in a microgranulation step during or after polymerization, is dried; a post-drying pulverization step; a post-drying sorting step; and a surface-treatment step, after the sorting step, in which a water-absorbing resin powder is subjected to a surface treatment. Said method is characterized in that, with some of the above steps kept running, the other steps are halted, and subsequently all steps are restarted.

METHOD FOR IMPROVING ABSORBING POLYMER GELATION IN AN ACID AND DIRTY ENVIRONMENTS OF URINE OR OF ORGANIC LIQUIDS

The invention relates to a method for gelling saturated high-acid liquids into salt (sodium chloride) by a method improving superabsorbent powder (SAP) polymers. The inventive method consists of a low percentage, 0.025 % to 15 %, of sodium carbonate Na 2CO3 (1) for buffering a low pH; quantitatively depending on the acidity of the liquid to be gelled; of a sodium or potassium polyacrylate SAP polymer (2), or the like; of a powder of finely granulated pumice stone (3) containing 75 % of silica (Si02) in the form of a natural ionizer exchanging ions with the SAP powder and substantially improving the gelling rate.

DEHUMIDIFYING ELEMENT AND MANUFACTURING METHOD FOR THE SAME

A dehumidifying element is disclosed includes a super absorbing polymer (SAP), and hygroscopic salt, thereby maintaining hygroscopic characteristics regardless of aging and high humidity absorbing rate and needing a small amount of energy for regeneration.

Method of Preparing Superabsorbent Polymer

Provided is a method of preparing a superabsorbent polymer. More specifically, provided is a method of preparing a superabsorbent polymer capable of exhibiting improved initial absorbency and a rapid absorption rate by polymerizing monomers having acidic groups, of which part is neutralized with a basic material including potassium hydroxide, in the presence of an encapsulated foaming agent. 1. A method of preparing a superabsorbent polymer , comprising:preparing a monomer composition by mixing water-soluble ethylenically unsaturated monomers including (meth)acrylic acid with a basic material including potassium hydroxide, an encapsulated foaming agent, an internal crosslinking agent, and a polymerization initiator, wherein at least part of the acidic groups of the water-soluble ethylenically unsaturated monomers is neutralized with the basic material including potassium hydroxide;forming a water-containing gel polymer by performing thermal polymerization or photo-polymerization of the monomer composition;forming a base polymer in the form of powder by drying and pulverizing the water-containing gel polymer; andforming a surface-crosslinked layer by additionally crosslinking a surface of the base polymer in the presence of a surface crosslinking agent,wherein the encapsulated foaming agent has a structure including a core which contains a hydrocarbon and a shell which surrounds the core and is formed using a thermoplastic resin, and has a mean diameter of 5 μm to 30 μm before expansion and a maximum expansion ratio of 5 times to 15 times in air.2. The method of preparing a superabsorbent polymer of claim 1 ,wherein the basic material includes 50 mol % to 100 mol % of potassium hydroxide and 0 mol % to 50 mol % of sodium hydroxide.3. The method of preparing a superabsorbent polymer of claim 1 ,wherein the basic material is used in an amount of 0.5 mole to 0.9 mole with respect to 1 mole of the water-soluble ethylenically unsaturated monomer.4. The method of preparing ...

SUPER ABSORBER

In an improved superabsorbent complexed with aluminum ions, the aluminum ions are applied in the form of an aqueous solution comprising aluminum ions, which has the feature that it comprises aluminum ions in a proportion within the range of 0.5%-15% by weight (converted if appropriate to Al), based on the total mass of the solution, and further comprises anions of lactic acid (lactate ions) and phosphoric acid (phosphate ions), where the molar proportion of the lactate ions is within the range of 0.01-2.99 times the molar amount of Al and the molar proportion of the phosphate ions is within the range of 0.01-2.99 times the molar amount of Al. 1. A superabsorbent complexed with aluminum ions , where the aluminum ions are applied in the form of an aqueous solution comprising aluminum ions in a proportion within a range of 0.5%-15% by weight (converted to Al) , based on a total mass of the solution , and further comprises anions of lactic acid (lactate ions) and phosphoric acid (phosphate ions) , where a molar proportion of the lactate ions is within the range of 0.01-2.99 times a molar amount of Al and a molar proportion of the phosphate ions is within the range of 0.01-2.99 times the molar amount of Al.2. The superabsorbent according to claim 1 , wherein the aluminum ions are applied in the form of an aqueous solution further comprising an anion of at least one third acid claim 1 , where the third acid is selected from the group consisting of amino acids claim 1 , carboxylic acids claim 1 , citric acid claim 1 , tartaric acid claim 1 , malic acid claim 1 , oxalic acid claim 1 , glycolic acid claim 1 , succinic acid claim 1 , gluconic acid claim 1 , glycine claim 1 , acetic acid claim 1 , sulfuric acid claim 1 , and combinations thereof.3. The superabsorbent according to claim 1 , wherein the aluminum ions are applied in the form of an aqueous solution further comprising an addition of at least one further cation claim 1 , where the cation is selected from the group ...

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. 1. A method for preparing a super absorbent polymer comprising: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 an internal crosslinking agent and a polymerization initiator to form a hydrogel polymer containing a first crosslinked polymer;drying the hydrogel polymer to form a dried polymer;pulverizing the dried polymer to prepare pulverized particles so that particles having a diameter of 710 μm or more are present in an amount of equal to or higher than 70.0 wt % based on a total weight of the pulverized particles; andsubjecting the pulverized particles to secondary pulverization,wherein during the secondary pulverization, a reference diameter is determined from a diameter range of 600 μm or more and 850 μm or less, and only particles having a diameter equal to or greater than the reference diameter among the pulverized particles are subjected to the secondary pulverization.2. The preparation method of claim 1 , wherein the crosslinking polymerization is performed in the presence of a foaming agent.3. The preparation method of claim 1 , wherein during the pulverizing of the dried polymer claim 1 , particles having a diameter of 710 μm or more are pulverized so as to be present in an amount of 75.0 wt % or more based on the total weight of the pulverized particles.4. The preparation method of claim 1 , wherein during the pulverizing of the dried polymer claim 1 , particles having a diameter of less than 180 μm are pulverized so as to be present in an amount of 8.0 wt % or less based on the total weight of the ...

Oil Absorbing Material and Processes of Recycling Absorbent Articles to Produce the Same

An oil absorbing material is generally provided. The oil absorbing material can includes sorbent particles having an average aspect ratio of about 5 to about 500 and a mean average particle diameter of about 10 m to about 1 millimeter. The oil absorbing material comprises polypropylene, polyethylene, inorganic filler particles, and absorbent core material. In one embodiment, the sorbent particles can have an average specific surface area of about 0.25 to about 5.0 m2/g and can have a bulk density that is about 0.01 g/cm3 to about 0.8 g/cm3. Processes of making the oil absorbing material are also provided via a solid-state shear pulverization recycling process transforming absorbent article waste into the oil absorbing material. The process can include pulverizing the absorbent article waste to form sorbent particles while cooling the absorbent article waste in an amount sufficient to maintain the absorbent article waste in a solid state.

DEWATERING PROMOTER AND METHOD FOR PRODUCTION THEREOF

A dewatering promoter which comprises a mixture of (A) a fine wood flour activated by a mechanochemical treatment and (B) a highly active cellulose fiber or a product formed by a grinding treatment of the mixture; and a method for producing the dewatering promoter which comprises adding the highly active cellulose fiber to the wood flour, in a ratio of more than 10% relative to the total mass of the wood flour and the highly active cellulose fiber, and subjecting the resultant mixture to a grinding treatment for at least 30 minutes. The above dewatering promoter can be produced at a low cost, and allows the reduction of the cost required for waste water treatments such as the disposal of a great amount of sludge.

Polysaccharide aspartate

METHOD FOR PRODUCING WATER ABSORBENT AGENT

МЕТАЛЛ ПЛАТИНОВОЙ ГРУППЫ И НЕБЛАГОРОДНЫЙ МЕТАЛЛ НА МОЛЕКУЛЯРНОМ СИТЕ ДЛЯ СИСТЕМ С ВПЛОТНУЮ СОЕДИНЕННЫМИ ПАССТИВНЫМ АДСОРБЕРОМ NOх, КАТАЛИЗАТОРОМ ПРЕДОТВРАЩЕНИЯ ПРОСКОКА АММИАКА И КАТАЛИЗАТОРОМ СЕЛЕКТИВНОГО КАТАЛИТИЧЕСКОГО ВОССТАНОВЛЕНИЯ

Изобретение относится к химической промышленности и охране окружающей среды. Каталитическое изделие содержит подложку, имеющую входной и выходной концы, первую и вторую зоны. Первая зона содержит пассивный адсорбер NOx (PNA), в котором металл платиновой группы и неблагородный металл расположены на молекулярном сите, и катализатор предотвращения проскока аммиака (ASC), состоящий из катализатора окисления, в котором металл платиновой группы расположен на носителе, и первый катализатор селективного каталитического восстановления (SCR), при массовом отношении первого катализатора SCR к металлу платиновой группы на носителе от 10:1 до 50:1. Смесь катализатора окисления и первого катализатора SCR расположена в нижнем слое, а в верхнем слое расположен второй катализатор SCR. Вторая зона содержит катализатор, выбранный из дизельного катализатора окисления (DOC) и дизельного экзотермического катализатора (DEC). Первая зона расположена выше по потоку перед второй зоной. Носитель содержит кремнийсодержащий ...

СШИТЫЕ ГЛИНИСТЫЕ ПОЛИМЕРНЫЕ ГЕЛИ В НОВЫХ ФИЗИЧЕСКИХ ФОРМАХ, СПОСОБЫ ИХ ФОРМИРОВАНИЯ И ВАРИАНТЫ ПРИМЕНЕНИЯ

Изобретение касается суперабсорбентных материалов. Материал выполнен в виде волокна, пленки или вспененного материала. Материал содержит пластификатор и заряженный сшитый глинистый гель (А), причем указанный заряженный сшитый глинистый гель (А) включает глинистые наночастицы (С), которые сшиты заряженным полимером - полиакрилатом или полиакрилсульфонатом. В заявленном материале любая конкретная глинистая наночастица связана по меньшей мере с одной другой глинистой наночастицей указанным заряженным полимером. Представлены способы получения предложенного материала в виде волокон, пленки и вспененного материала. Изобретение обеспечивает получение сшитых глинистых гелей, включающих заряженные полимеры. 8 н. и 13 з.п. ф-лы, 6 ил., 3 табл.

ПОГЛОТИТЕЛЬ И ВПИТЫВАЮЩЕЕ ИЗДЕЛИЕ

Этот поглотитель (1) содержит впитывающий лист (2), который содержит слой подложки (20) и слой поглотителя (21), который содержит поглощающие полимеры (P1), зафиксированный на одной из поверхностей слоя подложки (20); и слой переплетенных волокон (3). Поглощающие полимеры (P1) слоя поглотителя (21) находятся рядом со слоем переплетенных волокон (3). Поглощающие полимеры (P1) слоя (21) поглотителя предпочтительно фиксируются на одной из поверхностей слоя подложки (20) с помощью термоплавкого адгезива. Поглотитель (1), имеющий такую конфигурацию, тонкий и имеет превосходные характеристики впитывания и стабильности формы. 2 н. и 17 з.п. ф-лы, 4 ил.

АБСОРБЦИОННЫЙ КОМПОЗИЦИОННЫЙ МАТЕРИАЛ И СОДЕРЖАЩЕЕ ЕГО АБСОРБИРУЮЩЕЕ ИЗДЕЛИЕ, А ТАКЖЕ СПОСОБЫ, СИСТЕМЫ И УСТАНОВКА ДЛЯ ИЗГОТОВЛЕНИЯ АБСОРБЦИОННОГО КОМПОЗИЦИОННОГО МАТЕРИАЛА И/ИЛИ АБСОРБИРУЮЩЕГО ИЗДЕЛИЯ

ПЕЛЛЕТЫ И БРИКЕТЫ ИЗ СПРЕССОВАННОЙ БИОМАССЫ

... 1. Спрессованная основа, содержащая:первые частицы, содержащие материал биомассы, и вторые частицы, содержащие другой материал, где спрессованная основа, содержащая первые частицы и вторые частицы, является устойчивой к фрагментации.2. Спрессованная основа по п.1, где спрессованная основа является горючей.3. Спрессованная основа по п.2, где вторые частицы являются негорючими.4. Спрессованная основа по п.1, дополнительно содержащая третьи частицы композиции, отличные от таковых первых частиц и вторых частиц.5. Спрессованная основа по п.1, где спрессованная основа имеет общее содержание влаги приблизительно 9% по весу или менее.6. Спрессованная основа по п.2, где спрессованная основа имеет плотность энергии, по меньшей мере, приблизительно 7000 BTU на фунт при сгорании.7. Спрессованная основа по п.2, где спрессованную основу составляют для получения золы на уровне приблизительно 4% или менее во время сгорания.8. Спрессованная основа по п.1, где вторые частицы содержат биомассу.9. Спрессованная ...

ДИСПЕРСНЫЙ ВОДОПОГЛОТИТЕЛЬ, СОДЕРЖАЩИЙ В КАЧЕСТВЕ ОСНОВНОГО КОМПОНЕНТА ВОДОПОГЛОЩАЮЩУЮ СМОЛУ

... 1. Дисперсный водопоглотитель, содержащий водопоглощающую смолу, включающую полимер, полученный путем полимеризации ненасыщенного мономера и имеющий сшитую структуру, причем водопоглощающая смола представляет собой дисперсную водопоглощающую смолу, которая имеет на поверхности сшитую структуру, дисперсный водопоглотитель содержит, в расчете на дисперсный водопоглотитель, не менее 90 мас.ч, диаметр которых составляет не менее 106 и менее 850 мкм, и дисперсная водопоглощающая смола дополнительно содержит не менее 0,001 и менее 10 мас.%, в расчете на водопоглощающую смолу, соли органической кислоты и многовалентного металла, молекула которой содержит не менее семи углеродных атомов. 2. Дисперсный водопоглотитель, содержащий водопоглощающую смолу, включающую полимер, полученный путем полимеризации ненасыщенного мономера и имеющий сшитую структуру, причем водопоглощающая смола представляет собой дисперсную водопоглощающую смолу, которая имеет на поверхности сшитую структуру, дисперсная водопоглощающая ...

Controllable several storage cell system for e.g. material delivery, comprises a polymer storage cell, which has a hydrogel structure, a cell carrier, and a media

A controllable several storage cell system, comprises a polymer storage cell, which has a hydrogel structure, cell carrier, and a media, where conditions of cells are controlled by heat resistor/light/radiation effect. A controllable several storage cell system, comprises a polymer storage cell, which has a hydrogel structure, cell carrier, and a media, where conditions of cells are controlled by heat resistor/light/radiation effect. The carrier is provided with thermal resistances for heat uncoupling the storage cells, where the thermal resistances are material dilutions, materials/material combinations with a high thermal resistance, louvers or cavities. The controlling factor is organic solvents, biologically pharmaceutical materials, enzymes, proteins, antibody, antigens or genes. The hydrogel structure has cells or large porous molecules.

Rotating porous disk reactors their contraction and use

Absorber and absorbent article

WATER-ABSORBING ARTICLE

POWDERED, INTERLACED ONES, AQUEOUS LIQUIDS AS WELL AS BLOOD ABSORBING POLYMERS, PROCEDURES FOR YOUR PRODUCTION AND YOUR USE

PROCEDURE FOR THE AGGLOMERATION OF SUPERCABSORBER FINE PARTICLES

PROCESS FOR THE REDUCTION OF THE CONTENT OF WATER-SOLUBLE OF SALTS IN AQUEOUS VINYLAMINPOLYMERLÖSUNGEN

ABSORBENT THROW-AWAY ARTICLE

MONOLITHIC POLYMER COMPOSITION WITH ACTIVATING MATERIAL

SUPER+ABSORBENT POLYMERS AND PROCEDURES FOR YOUR PRODUCTION

Waste solution solidifying agent, process for preparing the same and use of the same

Pellets and briquettes from compacted biomass

Certain disclosed pellets, briquettes, and other compacted products contain multiple components and have a composition tailored to meet specific requirements for a given application. Frequently, at least one of the components is a biomass component. The compacted biomass products can be used in various applications including power generation, animal bedding, and waste absorbent. One particular embodiment involves using compacted body or mass as a fuel supplement or fuel replacement for coal or other fossil fuel(s) in co-firing power plants. Other specific applications include bedding for various animals including fowl, horses, and rabbits. Another application comprises pelletized absorbents such as cat litter for absorbing liquid and/or solid waste products.

Absorbent articles comprising absorbent materials exhibiting deswell/reswell

Claylinked polymer gels in new physical forms, methods for their formation and uses thereof

Absorbent material, and system and method of making same

A fiber-SAP particle includes a superabsorbent core particle (SAP core particle) and a plurality of fibers attached to the SAP core particle and extending therefrom. The fiber-SAP particles may be formed in a fluidized bed chamber using a spray drying process. The fiber-SAP particles may be incorporated into absorbent cores and articles, such as in disposable diapers.

POWDERY, CROSSLINKED ABSORBENT POLYMERS, METHOD FOR THE PRODUCTION THEREOF, AND THEIR USE

The invention relates to crosslinked polymerizates which are capable of absorbing, which are based on partially neu-tralized, monoethylenically unsaturated monomers that carry acidic groups, which exhibit improved properties, in par-ticular, with regard to their ability to transport liquids when in a swollen state, and which are subsequently cross-linked on the surface thereof at temperatures .gtoreq.150.degree.C with a combination consisting of polyol used as a subsequent crosslinker compound and of a cation provided in the form of an aqueous solution.

A DISPOSABLE ABSORPTIVE ARTICLE

The present invention concerns a disposable article for absorbing a liquid, wherein the article has a substantially non-liquid permeable layer forming an outer packaging surface of the article, and an absorptive material, wherein the outer packaging surface surrounds at least one side of the absorptive material, and wherein said outer packaging surface further includes an opening, through which liquid can pass into the absorptive material. The invention also relates to a method of producing an article and the use of said article in for example the plumbing business, as a drip absorbent, as a residual liquid absorbent, and as a condensate absorbent.

ALL-CELLULOSE SUPER ABSORBENT HYDROGELS AND METHOD OF PRODUCING SAME

The present disclosure generally relates to a scalable, green process for producing non-toxic, all- cellulose super absorbent hydrogels that form instantly after cross-linking. A super absorbent hydrogel can be produced by physical mixing of water-soluble carboxyalkyl polysaccharides such carboxymethyl cellulose and negatively-charged cellulose nanocrystals resulting in instantaneous gelation. Cellulose nanocrystals act as effective cross-linkers when physically mixed with carboxymethyl cellulose in an aqueous medium. The resulting hydrogel possesses excellent absorption properties, and has applications in a wide range of products from hygiene products to medical and industrial super absorbent products.

WATER-ABSORBING MATERIAL AND USES THEREOF

A chromogenic absorbent material for detecting a detectable substance in a water-containing medium, such as animal urine, is provided. The detectable substance may be indicative of a disease or condition, and the water-containing medium may be an excretion, blood, plasma, an aqueous solution or a solid impregnated with an aqueous solution. The chromogenic absorbent material may include a trigger agent, a chromogenic indicator convertible into a chromogenically active substance in the presence of the trigger agent and the detectable substance, and an absorptive material which is porous, for absorbing the water-containing medium. The absorptive material may include a water-absorbing polysaccharide providing absorptive properties to the chromogenic absorbent material. The trigger agent, the chromogenic indicator and the detectable substance are preferably unreactive to the absorptive material.

ABSORBENT LIQUID CONTROL STRIP

The present invention relates to absorbent liquid control strips of indeterminate length for comprising a sleeve of non-woven polypropylene or polyethylene or the like with a substrate in one or more layers within the sleeve. The substrate is impregnated or otherwise seeded with a super absorbent polymer such as sodium polyacrylate. The sleeve and substrate are perforated at periodic lengths to permit selection of a strip of the desired length with the substrate treated to de-activate the super absorbent polymer in areas adjacent the perforations. Liquid control strips can be used to contain spills prior to cleaning, minimize damage from leaks or control floor stripping chemical solution. Suitable for a wide range of cleaning applications including: refrigerator leaks, floor stripping, kitchen, restroom, window, swimming pool, hospital room and many more applications.

COMPOSITION COMPRISING SUPERABSORBENT POLYMER

Particulate water-absorbing agent and method for producing the same

PROCESS IMPROVING AND ALLOWING GELATION OF THE POLYMERS ABSORBENTS, IN VERY ACID ENVIRONMENTS AND SATURATE WITH SALT (SODIUM CHLORIDE)

PROCESS IMPROVING AND ALLOWING GELATION OF THE POLYMERS ABSORBENTS, IN VERY ACID ENVIRONMENTS AND SATURATE WITH SALT (SODIUM CHLORIDE)

Procédé permettant la gélification des liquides très acides et saturés en sel (chlorure de sodium) par un procédé améliorant les S.A.P polymers absorbants, Le procédé est composé : - D'un faible pourcentage de carbonate de sodium Na2CO3 (1) de 0.025% à 15%, permettant de tamponner le PH bas ; quantitativement suivant l'acidité du liquides à gélifier. - D'un « S.A.P. »; type "polyacrylate de sodium ou de potassium" (2) ou autres - D'une poudre "fine de granulats de pierre ponce"(3) constituée de 75% de "Silice " SiO2" ; ionisant naturel permettant l'échange ionique avec la poudre S.A.P, améliorant très fortement l'effet et la vitesse de gélification ...

POWDERY, CROSS-LINKED POLYMERS WHICH ABSORB AQUEOUS LIQUIDS AND BLOOD, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE

개선된 안정성을 갖는 미립자형 초흡수성 중합체 조성물

... 본 발명은 미립자형 초흡수성 중합체의 표면에 도포된 중화된 알루미늄 염 용액을 포함하는 중합체를 포함하는 미립자형 초흡수성 중합체 조성물에 관한 것으로; 여기서, 상기 중화된 알루미늄 염의 수용액은 약 5.5 내지 약 8의 pH 값을 갖고, 상기 미립자형 초흡수성 중합체 조성물은 300 내지 400㎛의 평균 입자 크기 분포, 약 20×10-8㎠ 내지 약 200×10-8㎠의 본래의 자유 팽윤 겔 층 투과도(FSGBP)를 갖고; 상기 미립자형 초흡수성 중합체 조성물이 가공 시험된 후에, 상기 미립자형 초흡수성 중합체 조성물은 약 0.60 내지 약 0.99의 투과도 안정성 지수, 및 표준 씨브 분류법에 의해 명시된 바와 같이 600㎛보다 큰 입자 직경을 갖는 입자들을 상기 미립자형 초흡수성 중합체 조성물의 약 15중량% 미만의 양으로 갖는다.

수성 중합체 겔을 건조시키고, 건조 중합체 겔을 분쇄하여 건조 중합체 입자를 제공하기 위한 벨트 건조기 배치 및 수성 중합체 겔을 건조시키고, 건조 중합체 겔을 분쇄하여 건조 중합체 입자를 제공하기 위한 방법

... 하기를 갖는, 수성 중합체 겔을 건조시키고, 건조 중합체 겔을 분쇄하여 건조 중합체 입자를 제공하기 위한 벨트 건조기 배치: - 수성 중합체 겔을 건조시키기 위한 건조기 셋업, - 건조 중합체 겔을 분쇄하여 건조 중합체 입자를 제공하기 위한, 건조기 셋업의 생성물 흐름 방향의 다운스트림에의 분쇄 배치. 본 발명에 있어서, 적어도 하나의 제 1 분쇄기 및 제 2 분쇄기를 갖고, 각각이 기능성 도구를 갖는 회전성 샤프트를 갖고, 제 2 분쇄기가 생성물 흐름 방향에서 제 1 분쇄기의 다운스트림에 배치되는 분쇄 배치가 고안된다.

Water absorbent and producing method of same

METHOD FOR COATING WATER-ABSORBING POLYMER PARTICLES

The invention relates to a method for producing water-absorbing polymer particles, wherein in a mixer water-absorbing polymer particles are coated with a particulate solid matter, the particulate solid matter is dispersed by means of a gas flow, and the supply of the dispersed particulate solid matter ends in the mixer beneath the product bed surface.

IONIC POLYMERS, METHOD OF MANUFACTURE, AND USES THEREOF

An ionic polymer of formula (VI) wherein each b=0 or 1; X is hydrogen, 1/z of a metal ion of charge z, a protonated nitrogen base, or a tetrasubstituted organic ammonium compound; the molar ratio of q:r:s:t=(100-0.1):(0-99.9):(0-50):(0-30); R1, R2 and R3 are hydrogen or C1-4 alkyl; R4, R5, R6 and R7 are hydrogen, C1-4 alkyl or F, wherein F is a functional group that imparts a property to polymer VI, at least one and no more than two of R4, R5, R6 and R7 are F and F is the same or different; G is a single bond or a C1-30 hydrocarbyl group; and for each instance of t when t is not zero, c=0-5 and d=0-5, provided that c+d=1-5, and wherein q, r and s as present in c are independent of any other value of q, r and s.

SUPER ABSORBENT POLYMER AND METHOD FOR MANUFACTURING SAME

The present invention relates to a super absorbent polymer and to a method for manufacturing same. More particularly, a super absorbent polymer and a method for manufacturing same are provided, wherein the super absorbent polymer uses a surface treating solution that includes water and diol or a glycol-based surface cross-linking agent during the surface treatment of the super absorbent polymer, satisfies all the combined physical properties required of a super absorbent polymer, and is especially effective in both initial absorbency and absorbing rate when pressed.

Water absorbing agent and method for producing the same

The present invention provides (i) a water absorbing agent which is excellent in a water absorbing physical properties, in particular water absorbing speed and has a great bulk specific gravity and (ii) a method for producing the water absorbing agent. The method for producing the water absorbing agent includes a surfactant adding step of adding a surfactant whose HLB is 10 or less. The surfactant adding step is the step of adding a dispersion liquid, which contains the surfactant equivalent to 30 parts by weight to 150 parts by weight, relative to 1000000 parts by weight of a water absorbent resin solid content, and the surfactant adding step is carried out after a drying step. Further, in a case where a water-soluble polyvalent metal salt adding step is carried out after the drying step, the surfactant adding step is carried out after the water-soluble polyvalent metal salt adding step.

High water-absorbent resin having crush resistance and method for manufacturing same

Disclosed are a surface-modified superabsorbent polymer and a method of preparing the same, wherein a superabsorbent polymer is surface-modified with the addition of a water-soluble salt having a multivalent cation and superhydrophobic microparticles, thereby improving attrition resistance, permeability and absorption speed without significantly deteriorating the other properties thereof.

Method of preparing a super absorbent polymer and a super absorbent polymer prepared therefrom

A method of preparing a super absorbent polymer (SAP) includes the steps of preparing a first hydrogel polymer by carrying out a thermal polymerization or photo polymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; preparing a second hydrogel polymer by carrying out a thermal polymerization or photo polymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; drying and milling the first hydrogel polymer and distributing the first hydrogel polymer into a fine powder having a particle diameter below 150 m and a base resin having a particle diameter of 150 m to 850 m; fabricating a reassembled body of the fine powder by mixing the fine powder and the second hydrogel polymer; and mixing the reassembled body of the fine powder with the first hydrogel polymer, and drying and milling the same.

Recycling of superabsorbent polymer via UV irradiation in flow system

Poly(acrylic acid)-based superabsorbent polymer (SAP) in a feed stream is converted with UV irradiation into poly(acrylic acid) (PAA) in a flow system. The UV total energy used to convert SAP into PAA is less than about 50 MJ/kg SAP.

Water-absorbing polymer having a high absorption rate

A process for producing a water-absorbing polymer composition, comprising the process steps of (i) mixing (α1) 0.1 to 99.999% by weight of ethylenically unsaturated monomers containing acid groups or salts thereof (α2) 0 to 70% by weight of polymerized, ethylenically unsaturated monomers copolymerizable with (α1), (α3) 0.001 to 10% by weight of one or more crosslinkers, (α4) 0 to 30% by weight of water-soluble polymers, and (α5) 0 to 20% by weight of one or more assistants, where the sum of their weights (α1) to (α5) is 100% by weight, (ii) free-radical polymerization with crosslinking to form a water-insoluble aqueous untreated hydrogel polymer, and surface postcrosslinking the ground hydrogel polymer wherein blowing agents having a particle size of 100 μm to 900 μm are added to the aqueous monomer solution prior to the addition of the initiator and the start of the free-radical polymerization.

Super Absorbent Polymer and Method for Preparing Same

The present disclosure relates to: a super absorbent polymer having a rapid absorption rate and maintaining elasticity even in a condition of being pressed multiple times, thereby having excellent dryness characteristic; and a preparation method therefor. The super absorbent polymer of the present disclosure exhibits excellent performance for use in hygiene materials such as diapers.

SUPERABSORBENT POLYMER AND PREPARATION METHOD THEREOF

Provided are a superabsorbent polymer and a preparation method thereof. The superabsorbent polymer according to the present invention has excellent gel bed permeability (GBP) and suction power, thereby being usefully applied to hygiene products such as diapers.

Method for preparing super absorbent polymer and super absorbent polymer prepared thereby

The present invention relates to a method for preparing super absorbent polymer, and the method for preparing super absorbent polymer according to the present invention may reduce the content of non-reacted monomers in the super absorbent polymer, by using three kinds of polymerization initiators.

PROCESS FOR PRODUCTION OF WATER-ABSORBING RESIN

... [Problems] To provide a process for preparing a water-absorbent resin which can be suitably used in a hygienic material, the water-absorbent resin having a large amount of water-retention, a large amount of water absorption under pressure, a high water absorption rate, and a small amount of water-soluble substance. [Solving Means] A process for preparing a water-absorbent resin comprising carrying out a reversed phase suspension polymerization in multi-steps of two or more steps when the water-absorbent resin is prepared by subjecting a water-soluble ethylenically unsaturated monomer to the reversed phase suspension polymerization, said process for preparing a water-absorbent resin being characterized by adding an aminocarboxylic acid compound to at least one step in the second and subsequent steps, to carry out the polymerization reaction.

METHOD FOR THE CONCENTRATION AND PURIFICATION OF BIOLOGICAL COMPOUNDS

HYDROABSORBENT PRODUCT

PROCESS FOR PREPARING WATER-ABSORBING POLYMER PARTICLES

ПОРОШКООБРАЗНЫЕ СШИТЫЕ АБСОРБИРУЮЩИЕ ВОДНЫЕ ЖИДКОСТИ, А ТАКЖЕ КРОВЬ, ПОЛИМЕРЫ, СПОСОБ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ

FIELD: chemistry of polymers, medicine. SUBSTANCE: invention relates to powder-like, surface-cross-linked polymerizates absorbing water or serosity fluids and blood and can be used as absorbents in sanitary and hygiene objects. Polymerizate is synthesized from: a) 55-99.9 wt.-% of polymerized ethylene-unsaturated monomers comprising acid groups neutralized at least by 25 mole%; b) 0-40 wt.-% of polymerized ethylene-unsaturated monomers co-polymerizable with monomers a); c) 0.1-5.0 wt.-% of one or some polymerized cross-linking agents; d) 0-30 wt.-% of water-soluble polymer wherein mass amounts of components a)-d) are 100 wt.-% in sum. A cover is applied on indicated polymerizate using e) 0.01-5 wt.-% (as measured for polymerizate) of at least one polyol as a surface cross-linking agent as a surface cross-linking agent as an aqueous solution, and f) 0.001-1.0 wt.-% (as measured for polymerizate) cation, and for cross-linking it is heated to temperature in the range from 150 o C to 300 o C. Method for preparing involves formation of mixture from above indicated components a)-d) wherein mixture is subjected for radical polymerization. If necessary, the mixture is ground and dried to form powder, powder is sieved and prepared powder is treated with above indicated components e) and f). Aqueous solutions of above indicated components e) and f) added in common or separately are stirred intensively with polymeric powder followed by heating to 150-300 o C and thermal cross-linking of this polymeric powder. Invention provides preparing superabsorbing polymers with high capacity under applied pressure, high retaining ability and good permeability. Method allows eliminating the necessary using large amounts of solvents and do not use toxicologically harmful substances. EFFECT: improved preparing method, valuable properties of polymers. 19 cl, 6 tbl, 16 ex ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) (13) 2 243 975 C2 C 08 F 8/00, A 61 L 15/00 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ...

ПОСТОЯННО СМАЧИВАЕМЫЕ СВЕРХПОГЛОЩАЮЩИЕ МАТЕРИАЛЫ

... 1. Способ получения постоянно смачиваемого сверхпоглощающего материала, предусматривающий обработку сверхпоглощающего материала раствором поверхностно-активного вещества, в котором поверхностно-активное вещество имеет, по меньшей мере, первую функциональную группу, способную вступать в химическую реакцию с другой функциональной группой сверхпоглощающего материала, и, по меньшей мере, одну нереакционноспособную и гидрофильную функциональную группу, и в котором поверхностно-активное вещество наносят на сверхпоглощающий материал, когда другие функциональные группы на поверхности сверхпоглощающего материала активированы. 2. Способ по п.1, в котором раствор поверхностно-активного вещества содержит растворитель, который является растворителем для поверхностно-активного вещества, но не является растворителем для сверхпоглощающего материала, и в котором раствор поверхностно-активного вещества содержит некоторое количество воды, достаточное для сольватирования поверхности сверхпоглощающего материала ...

ВПИТЫВАЮЩИЕ ИЗДЕЛИЯ, СОДЕРЖАЩИЕ ВПИТЫВАЮЩИЕ МАТЕРИАЛЫ, ПРОЯВЛЯЮЩИЕ СВОЙСТВА ОТБУХАНИЯ/ВТОРИЧНОГО НАБУХАНИЯ

... 1. Впитывающий композит, содержащий: ! впитывающую композицию; ! где впитывающая композиция содержит САП (суперабсорбирующий полимер), агент, инициирующий отбухание, (TAD) и агент, инициирующий повторное набухание, (TAR); !где САП, TAD и TAR все выбраны из групп химикатов, объединенных на основе растворимости или степени нейтрализации; и ! где впитывающий композит имеет верхнюю сторону и противоположную нижнюю сторону. ! 2. Впитывающий композит по п.1, где САП, TAD и TAR, по существу, равномерно распределены внутри композита. !3. Впитывающий композит по п.1, также содержащий целевую зону и область периметра; где целевая зона содержит САП, TAD и TAR; и где область периметра содержит, по существу, только САП. ! 4. Впитывающий композит по п.1, где TAD содержит первый растворимый в воде твердый химикат, где TAD имеет профиль высвобождения для высвобождения растворимого в воде твердого химиката, где профиль высвобождения выбран из сингулярного профиля высвобождения или сигмоидального профиля ...

Verbesserung des Wärmeübergangs und der Wärmekapazität von Wärmespeichern

Die vorliegende Erfindung betrifft die Verwendung superabsorbierender Materialien zur Erhöhung der Wärmekapazität bzw. zur Verbesserung des Wärmeübergangs in Wärmespeichern. Die vorliegende Erfindung betrifft ferner einen Wärmespeicher, umfassend mindestens ein superabsorbierendes Material, insbesondere Erdwärmespeicher.

Method and apparatus for processing flowable material and polyhipe polymers

Removal of aqueous impurities from siloxane based polymers

Powdery, cross-linked polymers which absorb aqueous liquids and blood, method for the production thereof and their use

Powdery, cross-linked polymers which absorb aqueous liquids and blood, method for the production thereof and their use

AN ABSORBENT COMPOSITE, AN ABSORBENT ARTICLE EMPLOYING THE SAME, AND METHODS, SYSTEMS, AND APPARATUS FOR MAKING THE ABSORBENT COMPOSITE AND/OR ARTICLE

Abstract An absorbent core composite for incorporation into a disposable absorbent article, the absorbent core composite comprising: a first material layer; a second material layer at least partially secured to the first material layer to define at least one pocket therebetween, the pocket having a fixed initial volume; and an aggregate of absorbent particles disposed in the pocket, wherein the absorbent particles are characterized by a dry volume associated with a dry state and a swell volume associated with a liquid saturation state, and wherein, the aggregate is characterized by a collective dry volume and a collective swell volume, wherein said pocket has an initial configuration that defines said fixed initial volume and retains said aggregate; and means for altering said initial pocket configuration during use to accommodate the collective swell volume of said aggregate. WO 2015/002934 PCT/US2014/045027 'fl2 Af1 ll S - 1/16 ...

POWDERY, CROSS-LINKED POLYMERS WHICH ABSORB AQUEOUS LIQUIDS AND BLOOD, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE

The invention relates to cross-linked polymerizates which are capable of absorbing, which are based on partially neutralized, monoethylenically unsaturated monomers that carry acidic groups, which exhibit improved properties, in particular, with regard to their ability to transport liquids when in a swollen state, and which are subsequently cross-linked on the surface thereof at temperatures >= 150 ~C with a combination consisting of polyol used as a subsequent cross-linker compound and of a cation provided in the form of an aqueous solution.

Method and system for surface modification of superadsorbent material for improved environmental and urban air sampling applications

A method for providing superadsorption of polar organic compounds using a material system comprising the steps of enhancing adsorption by means of using high surface area and mass transfer rates and decreased reactivity at surface sites attractive to the polar compounds and employing consequence management by maintaining a high rate of adsorptivity combined with high fidelity and accuracy of the material system.

Superabsorbent Comprising Pyrogenic Aluminum Oxide

Superabsorbents comprising pyrogenic aluminum oxide exhibit a low caking tendency coupled with good absorption properties and rapid water absorption.

Process for Producing Water-Absorbing Polymer Particles in a Polymerization Reactor with At Least Two Axially Parallel Rotating Shafts

A process for producing water-absorbing polymer particles by polymerizing an aqueous monomer solution in a polymerization reactor with at least two axially parallel rotating shafts, wherein the polymerization is performed in the presence of an inert gas and under positive pressure.

Preparation method of superabsorbent polymer

The present invention relates to a method of preparing a superabsorbent polymer, including the steps of: preparing a hydrous gel phase polymer by thermal polymerizing or photo-polymerizing a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; drying the hydrous gel phase polymer; milling the dried polymer; adding a surface cross-linking agent to the milled polymer; and elevating the temperature of the polymer including the surface cross-linking agent at a speed of 3° C./min to 15° C./min, and carrying out a surface cross-linking reaction at 100° C. to 250° C.

Process for producing water-absorbing polymer particles

The invention relates to a process for producing water-absorbing polymer particles, comprising polymerization, drying the resulting polymer gel on a through circulation belt dryer, crushing the dried polymer gel, pre-grinding, separating of incompletely dried particles with a perforated plate, grinding and classifying the resulting polymer particles.

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.

METHOD OF ABSORBING PRECIPITATION

A method of absorbing falling precipitation to prevent the falling precipitation from reaching an area for an activity includes spreading a sufficient amount of a water absorbent including superabsorbent granules over the area prior to or during the falling precipitation so that the superabsorbent granules can absorb the water before the falling precipitation can reach the area wherein the activity can immediately occur after the falling precipitation stops and the water absorbent is removed. Another method of absorbing falling precipitation to prevent the falling precipitation from reaching an area for an activity includes placing an application bag over the area prior to or during the falling precipitation, wherein the application bag includes a sufficient amount of superabsorbent granules inside a casing, wherein the superabsorbent granules can absorb the falling precipitation before the falling precipitation can reach the area, and wherein the activity can immediately occur after the falling precipitation stops and the application bag is removed. 1. A method of absorbing falling precipitation to prevent the falling precipitation from reaching an area for an activity , comprising:spreading a water absorbent comprising superabsorbent granules, which can absorb at least 200 times its weight in water, over the area prior to or during the falling precipitation so that the superabsorbent granules can absorb the falling precipitation before the falling precipitation can reach the area,wherein the activity can immediately occur after the falling precipitation stops and the water absorbent is removed.2. The method of claim 1 , wherein the water absorbent is spread over the area in an amount to create a layer of water absorbent of about 3-5 mm.3. The method of claim 1 , wherein the falling precipitation is at least one of rain claim 1 , snow claim 1 , sleet claim 1 , or hail.4. The method of claim 1 , wherein the activity is a construction claim 1 , landscaping claim 1 , ...

SUPERABSORBENT POLYMER AND METHOD FOR PRODUCING THE SAME

The present invention relates to a superabsorbent polymer and a method for producing the same. The superabsorbent polymer includes a core layer polymerized with monomers having carboxylic group, a first shell layer formed from a surface crosslinking agent, and a second shell layer formed from zingiberaceae extracts. By a surface modification on the first shell layer performed from a specific amount of the zingiberaceae extracts, the superabsorbent polymer produced according to the method for producing the same has a good antimicrobial property and deodorizing effects, and retains an original absorbent property. 1. A superabsorbent polymer , comprising:a core layer, polymerized with monomers having carboxylic group;a first shell layer, encapsulating an outer surface of the core layer, wherein the first shell layer is formed from a surface crosslinking agent; anda second shell layer, encapsulating an outer surface of the first shell layer, wherein the second shell layer is formed from zingiberaceae extracts;wherein based on a total weight of the core layer and the first shell layer as 100 weight parts, an amount of the zingiberaceae extracts is 0.005 weight parts to 0.2 weight parts.2. The superabsorbent polymer of claim 1 , wherein the zingiberaceae extracts comprise underground rhizome extracts claim 1 , stem extracts claim 1 , flower extracts and/or leaf extracts of zingiberaceae plants.3. The superabsorbent polymer of claim 1 , wherein the zingiberaceae extracts are made by an extraction method claim 1 , wherein the extraction method comprises:performing a pulverizing treatment to zingiberaceae plants for obtaining pulverized material of the zingiberaceae plants;performing an extraction treatment with hot water to the pulverized material of zingiberaceae plants for obtaining crude extracts; andperforming a vacuum distillation treatment to the crude extracts for obtaining the zingiberaceae extracts.4. The superabsorbent polymer of claim 2 , wherein the ...

Process for making a super absorbent composition

A method for making a super absorbent composition where feedstock is broken into clumps, the clumps are transported to a compression section, where the clumps are heated using compression and friction. Next, the compressed clumps are cooled and then broken into a super absorbent material.

Super Absorbent Polymer And Preparation Method Thereof

The present invention relates to a super absorbent polymer and a preparation method thereof, the super absorbent polymer including: surface cross-linked polymer particles prepared by surface cross-linking particles of a base resin, the base resin polymerized from a monomer composition including water-soluble ethylene-based unsaturated monomers having at least partially neutralized acidic groups; and a water-soluble component, wherein the water-soluble component has a weight average molecular weight of 150,000 to 300,000 g/mol. The super absorbent polymer may have high centrifuge retention capacity and excellent permeability at the same time, while having low content of the water-soluble component. 15-. (canceled)6. A preparation method of a super absorbent polymer , comprising:preparing a monomer composition including a water-soluble ethylene-based unsaturated monomers have un-neutralized acidic groups, and a polymerization initiator, wherein the polymerization initiator has a content of 40 to 300 ppm based on the amount of water-soluble ethylene-based unsaturated monomers;adding a neutralizing agent to the monomer composition to neutralize at least some of the un-neutralized acidic groups of the water-soluble ethylene-based unsaturated monomers;preparing a hydrogel polymer by polymerizing the monomer composition, wherein a polymerization temperature ranges from 20 to 45° C.;drying the hydrogel polymer;pulverizing the dried polymer to form particles; andsurface cross-linking the particles in the presence of a surface cross-linking agent to form surface cross-linked polymer particles of the super absorbent polymer, wherein the surface cross-linking agent is present in an amount ranging from 0.15 to 0.7 wt % based on an amount of the particles.7. The preparation method of claim 6 , wherein the super absorbent polymer includes a water-soluble component included in the super absorbent polymer has a weight average molecular weight of 150 claim 6 ,000 to 300 claim 6 ,000. ...

Method for reclaiming used superabsorbent polymer

A method enabling a used superabsorbent polymer recovered from used absorbent, etc., to be readily and inexpensively recovered without using acids or alkalies. The used superabsorbent polymer is treated with an aqueous solution of a multivalent metal salt such as calcium chloride, etc., the superabsorbent polymer treated with the aqueous solution of a multivalent metal salt is treated with an aqueous solution of an alkaline metal salt such as sodium chloride, etc., the superabsorbent polymer treated with the aqueous solution of an alkaline metal salt is washed with water, and the superabsorbent polymer washed with water is then dried.

Method For Preparing Natural Organic Macromolecular Water Treatment Agent

Method for preparing a natural organic macromolecular water treatment agent including: dissolving amylose corn starch in an alkali solution, stirring for 30 min, to obtain a suspension, freezing the suspension to fully frozen state, melting and dialyzing, to obtain a corn starch dispersion; mixing a modified flax fiber, the dispersion, nano-hybrid silica and distilled water, performing 800 W ultrasonication for 10 min, to obtain a treated suspension; taking an amount of a superabsorbent macromolecular resin with a certain shape, making it absorb water and swell into a solid hydrogel with the certain shape; mixing the solid hydrogel and the treated suspension, static defoaming, loading into a mold and solidifying, drying until the solid hydrogel is completely dehydrated, to obtain a hollow agent; spraying a catalytic degrading agent/toxin degrading agent on the surface of the hollow agent and/or the inner wall of holes thereof, to obtain the target agent.

Recycling of Superabsorbent Polymer Via UV Irradiation In Flow System

Poly(acrylic acid)-based superabsorbent polymer (SAP) in a feed stream is converted with UV irradiation into poly(acrylic acid) (PAA) in a flow system. The UV total energy used to convert SAP into PAA is less than about 50 MJ/kg SAP. 1. A method for degrading a superabsorbent polymer (SAP) to poly(acrylic acid) (PAA) comprising flowing a feed stream comprising said SAP into a UV irradiation zone , irradiating said feed stream with UV , and producing a product stream comprising said PAA at the end of said irradiation zone; wherein said feed stream comprises said SAP at a concentration greater than about 1 wt %; wherein said feed stream has a residence time in said UV irradiation zone of less than about 120 s; and wherein said UV used to convert SAP to PAA requires a UV total energy of less than about 50 MJ/kg SAP.2. The method of claim 1 , wherein said residence time is less than about 60 s.3. The method of claim 1 , wherein said UV total energy is less than about 16 MJ/kg SAP.4. The method of claim 1 , wherein said feed stream comprises SAP and water.5. The method of claim 1 , wherein said feed stream comprises SAP and hydrogen peroxide.6. The method of claim 1 , wherein said SAP has degree of neutralization (DN) greater than about 50%.7. The method of claim 1 , wherein said SAP has DN between about 65% and about 75%.8. The method of claim 1 , wherein said feed stream has a viscosity; wherein said product stream has a viscosity; wherein the ratio of the viscosity of the product stream to the viscosity of the feed stream is the viscosity ratio; and wherein the negative logarithm of said viscosity ratio is less than about 6.9. The method of claim 1 , wherein said feed stream has a viscosity; wherein said product stream has a viscosity; wherein the ratio of the viscosity of the product stream to the viscosity of the feed stream is the viscosity ratio; and wherein the negative logarithm of said viscosity ratio is less than about 4.10. The method of claim 1 , wherein ...

METHOD FOR RECYCLING SUPERABSORBENT POLYMER DERIVED FROM USED ABSORBENT ARTICLE AND RECYCLED SUPERABSORBENT POLYMER DERIVED FROM USED ABSORBENT ARTICLE

A method of recycling superabsorbent polymers derived from a used absorbent article, the method including: treating the superabsorbent polymers with ozone water after inactivation; reactivating, with an alkaline aqueous solution, the superabsorbent polymers treated with the ozone water; and adding hydrophilic fine particles to the superabsorbent polymers reactivated with the alkaline aqueous solution and then drying the superabsorbent polymers. 1. A method of recycling superabsorbent polymers derived from a used absorbent article , the method comprising:treating the superabsorbent polymers with ozone water after inactivation;reactivating, with an alkaline aqueous solution, the superabsorbent polymers treated with the ozone water; andadding hydrophilic fine particles to the superabsorbent polymers reactivated with the alkaline aqueous solution and then drying the superabsorbent polymers.2. The method according to claim 1 , further comprising:after the reactivating of the superabsorbent polymers and before the adding of the hydrophilic fine particles, dehydrating and washing the superabsorbent polymers with an organic solvent.3. The method according to claim 1 , whereinthe reactivating of the superabsorbent polymers includes:dehydrating and washing the superabsorbent polymers while reactivating the superabsorbent polymers with an aqueous solution containing an organic solvent and an alkali metal ion supply source supplying an alkali metal ion.4. The method according to claim 1 , further comprising:inactivating the superabsorbent polymers with an inactivating agent, whereinin the treating of the superabsorbent polymers, the superabsorbent polymers inactivated with the inactivating agent are treated with the ozone water.5. The method according to claim 4 , whereinthe inactivating agent contains an acidic aqueous solution.6. The method according to claim 1 , whereinthe hydrophilic fine particles include silica fine particles.7. The method according to claim 1 , ...

Superabsorbent Polymer Capsules and Bio-Mineralization Process for the Mitigation of Corrosion Under Insulation as smart packaging materials

A composite insulating material is provided. In one or more configurations the composite insulating material includes one or more active or responsive elements that mitigate corrosion under insulation (CUI). In a further aspect of the present invention, one or more active components of a composite insulation material are provided that dynamically generate an insoluble barrier within an insulating material through a bio-mineralization process.

METHOD FOR PREPARING SUPER ABSORBENT RESIN

The present invention discloses a method for preparing a super absorbent resin including the following steps: 1) adding an inner-crosslinking agent, an active promoter, and an initiator to a solution of an unsaturated monomer in water, deoxygenating by bubbling nitrogen therethrough, and then undergoing free radical polymerization to obtain a gel; 2) reacting the gel with a neutralizing agent, extruding, and granulating to obtain a product; 3) drying, pulverizing, sieving, and fixing the particle size combination of the product to obtain powdered raw particles; 4) adding a surface crosslinking agent to the powdered raw particles and performing surface crosslinking by heating to obtained crosslinked particles; and 5) subjecting the crosslinked particles to anti-caking treatment to obtain a super absorbent resin. 1. A method for preparing a super absorbent resin , comprising:step 1) adding an inner-crosslinking agent, an active promoter, and an initiator to a solution of an unsaturated monomer in water to obtain a mixture solution, deoxygenating the mixture solution by bubbling nitrogen therethrough, and then the mixture solution undergoing a free radical polymerization to obtain a gel, wherein the unsaturated monomer is an acrylic acid monomer and/or a water-soluble monomer with an unsaturated double bond having an acidic group;step 2) reacting the gel with a neutralizing agent to obtain an intermediate product; extruding and granulating the intermediate product to obtain a product;step 3) drying, pulverizing, sieving, and fixing a particle size combination of the product to obtain a plurality of powdered raw particles;step 4) adding a surface crosslinking agent to the plurality of powdered raw particles and performing surface crosslinking by heating to obtained a plurality of crosslinked particles; andstep 5) subjecting the plurality of crosslinked particles to an anti-caking treatment to obtain a super absorbent resin.2. The method for preparing a super absorbent ...

Super Absorbent Polymer

The present invention relates to a superabsorbent polymer having excellent short time free absorbency. The superabsorbent polymer may exhibit excellent centrifuge retention capacity and absorbency under load, as well as excellent short time free absorbency. Thus, it can fundamentally solve the problems of the existing superabsorbent polymer and technical requirement of the art, and can provide various hygienic goods exhibiting more excellent properties. 2. The superabsorbent polymer according to claim 1 , wherein centrifuge retention capacity (CRC) to a saline solution is 30 to 50 g/g claim 1 , and absorbency under load (AUL) of 0.7 psi to a saline solution is 15 to 30 g/g.3. The superabsorbent polymer according to claim 1 , wherein centrifuge retention capacity (CRC) to a saline solution is 38 to 50 g/g claim 1 , and absorbency under load (AUL) of 0.7 psi to a saline solution is 24 to 30 g/g.4. The superabsorbent polymer according to claim 1 , wherein Rin the Chemical Formula 1 claim 1 , is methane-1 claim 1 ,1-diyl claim 1 , propane-1 claim 1 ,3-diyl claim 1 , propane-1 claim 1 ,2-diyl claim 1 , propane-1 claim 1 ,1-diyl claim 1 , n-butane-1 claim 1 ,4-diyl claim 1 , n-butane-1 claim 1 ,3-diyl claim 1 , n-butane-1 claim 1 ,2-diyl claim 1 , n-butane-1 claim 1 ,1-diyl claim 1 , 2-methylpropane-1 claim 1 ,3-diyl claim 1 , 2-methylpropane-1 claim 1 ,2-diyl claim 1 , 2-methylpropane-1 claim 1 ,1-diyl claim 1 , 2-methylbutane-1 claim 1 ,4-diyl claim 1 , 2-methylbutane-2 claim 1 ,4-diyl claim 1 , 2-methylbutane-3 claim 1 ,4-diyl claim 1 , 2-metylbutane-4 claim 1 ,4-diyl claim 1 , 2-methylbutane-1 claim 1 ,3-diyl claim 1 , 2-methylbutane-1 claim 1 ,2-diyl claim 1 , 2-methylbutane-1 claim 1 ,1-diyl or 2-methylbutane-2 claim 1 ,3-diyl.5. The superabsorbent polymer according to claim 1 , wherein the inorganic material is montmorillonite claim 1 , saponite claim 1 , nontronite claim 1 , laponite claim 1 , beidelite claim 1 , hectorite claim 1 , sauconite claim 1 , stevensite ...

METHOD FOR PRODUCING SUPERABSORBENT PARTICLES

A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising drying of the resultant aqueous polymer gel in an air circulation belt dryer, grinding, classifying, and optionally thermal surface postcrosslinking, wherein the aqueous polymer gel is introduced into the air circulation belt dryer by means of an oscillating conveyor belt and that guide devices are located at the edges of the conveyor belt. 1. A process for producing superabsorbent particles by polymerizing a monomer solution or suspension comprisinga) at least one ethylenically unsaturated monomer which bears an acid group and is at least partly neutralized,b) at least one crosslinker andc) at least one initiator,{'b': ['1', '2'], '#text': 'comprising drying a resultant aqueous polymer gel in an air circulation belt dryer, grinding, classifying, and optionally thermal surface postcrosslinking, wherein the aqueous polymer gel is introduced into the air circulation belt dryer by an oscillating conveyor belt, and wherein guide devices () are located at edges of the conveyor belt ().'}2111. The process according to claim 1 , wherein the guide devices () are located at a discharge end of the conveyor belt and a length of the guide devices () is from 15% to 30% of the length of a conveyor belt claim 1 , the length of the conveyor belt being a distance of a pivot axis from the discharge end claim 1 , and/or wherein a height of the guide devices () is from 10 to 20 cm.31. The process according to claim 1 , wherein the guide devices () are rotated about an angle α at right angles to a running direction of the conveyor belt to the middle of the conveyor belt in running direction.41. The process according to claim 3 , wherein the guide devices () are rotated by 8° to 10°.51. The process according to claim 1 , wherein a part of the guide devices () that is in contact with the conveyor belt is made of silicone rubber.61. The process according to any of claim 1 , wherein ...

Super Absorbent Polymer And Method For Producing Same

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

A Method For Preparing Superabsorbent Polymer, And Superabsorbent Polymer

The present invention relates to a method for preparing superabsorbent polymer that introduces a plate type and rod-shaped clay additive in the superabsorbent polymer, and thus exhibits basic properties of a superabsorbent polymer equivalent to or much better than the existing superabsorbent polymer through multi-crosslinking, and particularly, can improve absorbency under pressure (AUP), and a superabsorbent polymer obtained thereby. 1. A method for preparing a superabsorbent polymer comprising the steps of:mixing water-soluble ethylenically unsaturated monomers having acid groups of which at least a part are neutralized, an internal crosslinking agent, a polymerization initiator, and additives to prepare a monomer composition;polymerizing the monomer composition to form a hydrogel polymer comprising a multi-crosslinked polymer; anddrying, grinding, and sieving the hydrogel polymer to form a base polymer powder,wherein the additives comprise a plate type and rod-shaped clay that is modified by an amine-based organic compound and has an amine group introduced on the surface thereof.2. The method for preparing a superabsorbent polymer according to claim 1 , wherein the content of the amine-based organic compound is 5 to 50 parts by weight claim 1 , based on 100 parts by weight of the clay before being modified.4. The method for preparing a superabsorbent polymer according to claim 1 , wherein the plate type and rod-shaped clay includes one or more nanoparticles selected from the group consisting of montmorillonite claim 1 , saponite claim 1 , nontronite claim 1 , laponite claim 1 , beidelite claim 1 , hectorite claim 1 , vermiculite claim 1 , magadiite claim 1 , kaolin claim 1 , serpentine claim 1 , and mica.5. The method for preparing superabsorbent polymer according to claim 1 , wherein the plate type and rod-shaped clay include plate type and rod-shaped clay having an average size of 0.025 to 10 p.m.6. The method for preparing a superabsorbent polymer according to ...

A PROCESS FOR PREPARATION OF SUPERABSORBENT POLYMER

The present invention relates to a process for preparation of superabsorbent polymer with high fluid absorptivity. The present invention also relates to a composition comprising said superabsorbent polymer particles and their use for absorbing aqueous fluids, for example in the agricultural industry. 1. A process for preparing a superabsorbent polymer comprising saponifying a polymer in presence of water immiscible solvent to provide the superabsorbent polymer.2. The process as claimed in claim 1 , wherein said solvent is selected from chlorinated hydrocarbons claim 1 , aliphatic hydrocarbons claim 1 , aromatic hydrocarbons claim 1 , and mixtures thereof.3. The process as claimed in claim 1 , wherein said chlorinated hydrocarbons are selected from carbon tetrachloride claim 1 , chloroform claim 1 , 1 claim 1 ,2-dichloroethane claim 1 , dichloromethane claim 1 , mono chlorobenzene or dichlorobenzene; said aliphatic hydrocarbon is selected from pentane claim 1 , hexane claim 1 , heptane claim 1 , octane claim 1 , nonane claim 1 , decane claim 1 , dodecane claim 1 , cyclohexane or cyclopentane; said aromatic hydrocarbon is selected from toluene claim 1 , xylene claim 1 , trimethyl benzene claim 1 , 1-methyl-4-propan-2-ylbenzene; ethers selected from diethyl ether claim 1 , di isopropyl ether claim 1 , diphenyl ether and tert butyl methyl ether and mixtures thereof.4. The process as claimed in claim 1 , wherein said polymer is formed by graft polymerizing at least one monomer capable of forming a superabsorbent polymer and a polysaccharide in the presence of an initiator.5. The process as claimed in claim 1 , wherein saponifying carried out at temperature in the range of 25° C. to 100° C.6. The process as claimed in claim 1 , wherein said wherein said superabsorbent polymer is in granular form.7. The process as claimed in claim 1 , wherein saponifying is performed wth a non-ionic or ionic surfactant.8. The process as claimed in claim 7 , wherein said non-ionic ...

Superabsorbent Polymer And Preparation Method For The Same

A method of preparing a superabsorbent polymer includes preparing a base resin in which an acrylic acid-based monomer having acidic groups which are at least partially neutralized and an internal crosslinking agent are crosslinked in the presence of a sodium polycarboxylate surfactant; and heating the base resin in the presence of a surface crosslinking agent to carry out surface modification of the base resin, wherein the internal crosslinking agent includes a first epoxy crosslinking agent having an epoxy equivalent weight of 100 g/eq or more to less than 130 g/eq, and a second epoxy crosslinking agent having an epoxy equivalent weight of 130 g/eq or more. The superabsorbent polymer provides improved rewetting property and liquid permeability. 1. A method of preparing a superabsorbent polymer , comprising:preparing a base resin in which an acrylic acid-based monomer having acidic groups which are at least partially neutralized and an internal crosslinking agent are crosslinked in the presence of a sodium polycarboxylate surfactant; andheating the base resin in the presence of a surface crosslinking agent to carry out surface modification of the base resin,wherein the internal crosslinking agent includes a first epoxy crosslinking agent having an epoxy equivalent weight of 100 g/eq or more to less than 130 g/eq, and a second epoxy crosslinking agent having an epoxy equivalent weight of 130 g/eq or more.2. The method of claim 1 , wherein the sodium polycarboxylate surfactant is included in an amount of 0.01 part by weight to 1 part by weight with respect to 100 parts by weight of the acrylic acid-based monomer.3. The method of claim 1 , wherein the sodium polycarboxylate surfactant has a density of 1.07 g/ml to 1.13 g/ml claim 1 , and a weight average molecular weight of 500 g/mol to 1 claim 1 ,000 claim 1 ,000 g/mol.4. The method of claim 1 , wherein the second epoxy crosslinking agent has an epoxy equivalent weight of 150 g/eq to 400 g/eq.5. The method of claim 1 ...

Preparation Method Of Super Absorbent Polymer

The present invention relates to a method for superabsorbent polymer that has a crosslinking density gradient increasing from the inside toward the outside, and thus, exhibits excellent properties with simultaneously improved centrifuge retention capacity and absorbency under load. 2. The method for preparing superabsorbent polymer according to claim 1 , wherein the internal crosslinking agent comprises a compound of the Chemical Formula 1 wherein Ris methane-1 claim 1 ,1-diyl claim 1 , propane-1 claim 1 ,3-diyl claim 1 , propane-1 claim 1 ,2-diyl claim 1 , propane-1 claim 1 ,1-diyl claim 1 , n-butane-1 claim 1 ,4-diyl claim 1 , n-butane-1 claim 1 ,3-diyl claim 1 , n-butane-1 claim 1 ,2-diyl claim 1 , n-butane-1 claim 1 ,1-diyl claim 1 , 2-methylpropane-1 claim 1 ,3-diyl claim 1 , 2-methylpropane-1 claim 1 ,2-diyl claim 1 , 2-methylpropane-1 claim 1 ,1-diyl claim 1 , 2-methylbutane-1 claim 1 ,4-diyl claim 1 , 2-methylbutane-2 claim 1 ,4-diyl claim 1 , 2-methylbutane-3 claim 1 ,4-diyl claim 1 , 2-metylbutane-4 claim 1 ,4-diyl claim 1 , 2-methylbutane-1 claim 1 ,3-diyl claim 1 , 2-methylbutane-1 claim 1 ,2-diyl claim 1 , 2-methylbutane-1 claim 1 ,1-diyl or 2-methylbutane-2 claim 1 ,3-diyl.3. The method for preparing superabsorbent polymer according to claim 1 , wherein the internal crosslinking agent comprises a compound of the Chemical Formula 1 claim 1 , in the content of 1 to 100 wt % claim 1 , based on the total weight of the internal crosslinking agent.4. The method for preparing superabsorbent polymer according to claim 1 , wherein the internal crosslinking agent is used in the content of 0.01 to 5 parts by weight claim 1 , based on 100 parts by weight of the water soluble ethylenically unsaturated monomers.5. The method for preparing superabsorbent polymer according to claim 1 , wherein the inorganic material includes montmorillonite claim 1 , saponite claim 1 , nontronite claim 1 , laponite claim 1 , beidelite claim 1 , hectorite claim 1 , sauconite claim 1 , ...

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 ...

SUPERABSORBENT POLYMER WITH CROSSLINKER

The present invention further relates to a particulate superabsorbent polymer composition comprising a crosslinker composition that is the reaction product selected from (i) saturated amines and/or saturated polyamines with ethylenically unsaturated glycidyl compounds and/or ethylenically unsaturated polyglycidyl compounds, (ii) ethylenically unsaturated amines and/or ethylenically unsaturated polyamines with saturated glycidyl compounds and/or saturated polyglycidyl compounds, or (iii) ethylenically unsaturated amines and/or ethylenically unsaturated polyamines with ethylenically unsaturated glycidyl compounds and/or ethylenically unsaturated polyglycidyl compounds; and a surface crosslinking agent applied to the particle surface. The present invention further relates to an absorbent article that includes such particulate superabsorbent polymer compositions. 1. A particulate superabsorbent polymer composition having increased permeability wherein the particulate superabsorbent polymer comprisesa) a polymerizable monomer wherein the monomer is selected from unsaturated acid groups-containing monomers, ethylenically unsaturated carboxylic acid anhydride, salts, or derivatives thereof;b) an internal crosslinker composition that is the reaction product selected from(i) saturated amines and/or saturated polyamines with ethylenically unsaturated glycidyl compounds and/or ethylenically unsaturated polyglycidyl compounds, or(ii) ethylenically unsaturated amines and/or ethylenically unsaturated polyamines with saturated glycidyl compounds and/or saturated polyglycidyl compounds, or(iii) ethylenically unsaturated amines and/or ethylenically unsaturated polyamines with ethylenically unsaturated glycidyl compounds and/or ethylenically unsaturated polyglycidyl compounds;wherein components a) and b) are polymerized and granulated to form particulate superabsorbent polymer which has a particle surface, wherein at least 40 wt % of the particulate superabsorbent polymer has a ...

Method of Preparing Superabsorbent Polymer

Provided is a method of preparing a superabsorbent polymer. More particularly, provided is a method of preparing a superabsorbent polymer having a rapid absorption rate and an improved water retention capacity by additional heat treatment while using a thermally degradable internal crosslinking agent and an encapsulated foaming agent at the same time during polymerization. 2. The method of preparing a superabsorbent polymer of claim 1 ,{'sup': '1', 'sub': -diyl,', '-diyl., 'wherein the internal crosslinking agent includes the compound of Chemical Formula 1, in which Ris methane-1,1-diyl, propane-1,3-diyl, propane-1,2-diyl, propane-1,1-diyl, n-butane-1,4-diyl, n-butane-1,3-diyl, n-butane-1,2-diyl, n-butane-1,1-diyl, 2-methylpropane-1,3-diyl, 2-methylpropane-1,2-diyl, 2-methylpropane-1,12-methylbutane-1,4-diyl, 2-methylbutane-2,4-diyl, 2-methylbutane-3,4-diyl, 2-methylbutane-4,4-diyl, 2-methylbutane-1,3-diyl, 2-methylbutane-1,2-diyl, 2-methylbutane-1,1-diyl, 2-methylbutane-2,3-diyl, 3-methylbutane-1,2-diyl, or 3-methylbutane-1,3'}3. The method of preparing a superabsorbent polymer of claim 1 ,wherein the internal crosslinking agent includes the compound represented by Chemical Formula 1 in an amount of 1% by weight to 100% by weight with respect to the a total weight of the internal crosslinking agent.4. The method of preparing a superabsorbent polymer of claim 1 ,wherein the internal crosslinking agent is used in an amount of 0.1 part by weight to 0.6 parts by weight with respect to 100 parts by weight of the water-soluble ethylenically unsaturated monomer.5. The method of preparing a superabsorbent polymer of claim 1 ,wherein the encapsulated foaming agent has a mean diameter of 5 μm to 50 μm before expansion.6. The method of preparing a superabsorbent polymer of claim 1 ,wherein the encapsulated foaming agent has a core-shell structure, in which a core contains a hydrocarbon and a shell composed of a thermoplastic resin is formed on the core.7. The method of ...

Super absorbent polymer

The present invention relates to a super absorbent polymer. According to the present invention, provided is a super absorbent polymer which includes (meth)acrylated polyalkylene glycol on an internally crosslinked polymer inside a surface modified layer, thereby exhibiting more improved absorbency and retention capacity.

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.

SUPERABSORBENT POLYMER MATERIAL COMPRISING NON-CROSSLINKED POLYACRYLIC ACID POLYMER

Superabsorbent polymer material comprising cross-linked polyacrylic acid and salts thereof. The superabsorbent polymer material further comprising at least 3.0 weight-%, based on the total weight of the superabsorbent polymer material, of soluble polyacrylic acid polymers. A method for making such superabsorbent polymer materials is also disclosed. 1. A superabsorbent polymer material comprising cross-linked polyacrylic acid and salts thereof , the superabsorbent polymer material further comprising at least 3.0 weight-% , based on the total weight of the superabsorbent polymer material , of soluble polyacrylic acid polymers , wherein the cross-linked polyacrylic acid and salts thereof have an average distance Rbetween neighboring crosslinks , as calculated for the superabsorbent polymer material loaded with 20 g of saline with 0.9% w NaCl per gram of dry superabsorbent polymer material , and wherein the at least 3 about weight-% of soluble polyacrylic acid polymers have an average diameter of gyration 2*R , and{'sub': g', 'xl, 'wherein the ratio of 2*Rto Ris at least 1.1.'}2. The superabsorbent polymer material of claim 1 , wherein the soluble polyacrylic acid polymers have a weight average molecular weight Mof from about 250 kDa to about 3 MDa.3. The superabsorbent polymer material of claim 1 , wherein the average distance between neighboring cross-links in the polymer network Ris at least about 15 nm claim 1 , and not more than about 50 nm claim 1 , preferably not more than about 40 nm.4. The superabsorbent polymer material of claim 1 , wherein the diameter of gyration 2*Rof the soluble polyacrylic polymers is at least about 20 nm claim 1 , and not more than about 100 nm claim 1 , preferably not more than about 80 nm.5. The superabsorbent polymer material of claim 1 , wherein the soluble polyacrylic acid polymers are comprised by the superabsorbent polymer material in an amount up to about 50.0 weight-% claim 1 , preferably up to about 30.0 weight-% claim 1 , more ...

Super Absorbent Polymer Composition

The present disclosure relates to a super absorbent polymer composition. More specifically, the present disclosure relates to a super absorbent polymer composition prepared such that agglomeration between polymer particles is suppressed by including an additive having a specific structure, and thus an additional pulverizing process is not required after drying. 2. The super absorbent polymer composition of claim 1 ,wherein at least some of the carboxylic acid-based additive is present on a surface of the super absorbent polymer particles.3. The super absorbent polymer composition of claim 1 ,wherein in Chemical Formula 1,{'sub': 6', '13', '10', '21', '11', '23', '12', '25', '13', '27', '14', '29', '15', '31, 'A is —CH, —CH, —CH, —CH, —CH, —CH, or —CH.'}5. The super absorbent polymer composition of claim 1 ,wherein in Chemical Formula 1,{'sub': '2', 'Bis propylene, butylene, or pentylene.'}6. The super absorbent polymer composition of claim 1 ,wherein the carboxylic acid-based additive is at least one selected from the group consisting of a carboxylic acid represented by the Chemical Formula 1, an alkali metal salt thereof, and an alkaline earth metal salt thereof.8. The super absorbent polymer composition of claim 1 ,wherein the carboxylic acid-based additive is included in an amount of 0.01 to 10 wt % based on a total weight of the super absorbent polymer composition.9. The super absorbent polymer composition of claim 1 ,further comprising a surface cross-linked layer formed by further cross-linking the cross-linked polymer using a surface cross-linking agent on at least a part of a surface of the super absorbent polymer particles. This application is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/KR2020/015697, filed on Nov. 10, 2020, which claims priority from Korean Patent Application No. 10-2019-0172495, filed on Dec. 20, 2019, and Korean Patent Application No. 10-2020-0148078, filed on Nov. 6, 2020, the disclosures of which ...

PARTICULATE WATER ABSORBING AGENT AND WATER ABSORBENT ARTICLE

A water absorbent resin (water absorbing agent) and method for producing it are provided which improve, in a water absorbent article (in particular, a diaper) including a water absorbent resin as a water absorbing agent, the absolute absorption amount (g), liquid absorbing times (in particular, liquid absorbing times at the second instance and later), re-wet (g), and diffusion distance (%) of the water absorbent article. 1. A particulate water absorbing agent , comprising:a polyacrylic acid (salt)-based water absorbent resin as a main component,the polyacrylic acid (salt)-based water absorbent resin being a surface-crosslinked water absorbent resin containing an internal crosslinking agent in an amount of 0.04 mol % or more to 0.07 mol % or less relative to a monomer,the particulate water absorbing agent having a swelling rate (CRC) of 32 g/g to 50 g/g relative to 0.9-mass % saline,the particulate water absorbing agent including, at a proportion of 80 mass % or more, a particle having a size of 600 μm to 150 μm as defined through a standard-sieve classification,the particulate water absorbing agent having a second-instance pure-water 50-fold swelling time (SST (in seconds)) of 70 seconds or less,a difference (DST=SST−FST) between a first-instance pure-water 50-fold swelling time (FST (in seconds)) and the second-instance pure-water 50-fold swelling time (SST (in seconds)) being+10 seconds or less,the particulate water absorbing agent including, at 3 mass % or less, a particle that passes through a 150 μm mesh as defined through a standard-sieve classification.2. The particulate water absorbing agent according to claim 1 , further comprising:a water-insoluble inorganic fine particle as a liquid permeability improving agent.3. The particulate water absorbing agent according to claim 2 ,wherein:the water-insoluble inorganic fine particle is contained in an amount of 0.05 part by mass to 5.0 parts by mass relative to 100 parts by mass of the particulate water absorbing ...

PARTICULATE WATER-ABSORBING AGENT

The present invention provides a particulate water-absorbing agent which has an excellent fluid retention capacity under pressure and an excellent liquid permeability. Each of the following values of the particulate water-absorbing agent of the present invention falls within a certain range: a ratio represented by “centrifuge retention capacity/Ln (water-soluble component amount)”; a molecular weight distribution of the water-soluble component; a weight average molecular weight after a hydrolysis treatment; and a branching density after the hydrolysis treatment. 1. A particulate water-absorbing agent comprising a polyacrylic acid (salt)-based water-absorbing resin as a main component , said particulate water-absorbing agent satisfying (a) through (d) below: {'br': None, 'EXI=centrifuge retention capacity/Ln(water-soluble component amount)\u2003\u2003(1),'}, '(a) EXI represented by the following Formula (1) is not less than 11.5 {'br': None, 'Molecular weight distribution=weight average molecular weight/number average molecular weight\u2003\u2003(2),'}, '(b) a molecular weight distribution, represented by the following Formula (2), of a water-soluble component is 1.0 to 4.8(c) a weight average molecular weight after a hydrolysis treatment is 450,000 Da to 1,800,000 Da, and(d) a branching density after the hydrolysis treatment is not more than 0.100,said hydrolysis treatment being a treatment carried out by allowing said particulate water-absorbing agent to swell in a 0.9 weight % aqueous sodium chloride solution, removing the water-soluble component so as to obtain a gel, and allowing 600 mg of the gel to stand still in 10 mL of a 0.1 N aqueous sodium hydroxide solution at 80° C. for 3 weeks.2. The particulate water-absorbing agent according to claim 1 , whereinsaid weight average molecular weight of the water-soluble component is 200,000 Da to 1,000,000 Da.3. The particulate water-absorbing agent according to claim 1 , whereina fluid retention capacity under ...

Chromogenic Absorbent Material for Animal Litter

A chromogenic absorbent material for an animal litter includes an oxidizing agent responsive to peroxidatic/pseudoperoxidatic activity in an animal excretion or a first catalytic compound generating the oxidizing agent in situ. The material also includes a chromogenic indicator being chromogenically responsive to the oxidizing activity of the oxidizing agent, and an absorptive material which is porous, for absorbing the animal excretion. The absorptive material includes a water-absorbing polysaccharide providing absorptive properties to the chromogenic absorbent material; and may also include a second polysaccharide and a superabsorbent polymer. The material may be obtained in the form of particles having a low density and a high porosity, and is usable in conjunction with an animal litter for detecting various diseases in animals. 2. The chromogenic absorbent material of claim 1 , wherein the first catalytic compound comprises glucose oxidase (GOx).3. The chromogenic absorbent material of claim 1 , wherein the oxidizing agent generated in situ is hydrogen peroxide.4. The chromogenic absorbent material of claim 1 , wherein the second catalytic compound comprises horseradish peroxidase (HRP).5. The chromogenic absorbent material of claim 1 , wherein the first catalytic compound claim 1 , the second catalytic compound and the chromogenic indicator are distributed within the absorptive material.6. The chromogenic absorbent material of claim 1 , wherein the chromogenic indicator comprises a benzidine-type compound.7. The chromogenic absorbent material of claim 6 , wherein the benzidine-type compound comprises 3 claim 6 ,3′ claim 6 ,5 claim 6 ,5′-tetramethylbenzidine.8. The chromogenic absorbent material of claim 1 , wherein the water-absorbing polysaccharide comprises a cellulose derivative claim 1 , a gelling polysaccharide claim 1 , or a mixture thereof.9. The chromogenic absorbent material of claim 8 , wherein the cellulose derivative is a cellulose ester or a ...

Super Absorbent Polymer And Method For Producing Same

A super absorbent polymer according to the present invention has an excellent discoloration resistance characteristic even under high temperature/high humidity conditions, while maintaining excellent absorption performance, and is preferably used for hygienic materials such as diapers, and thus can exhibit excellent performance. 1. A super absorbent polymer comprising:a base polymer powder comprising a first cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; anda surface cross-linked layer formed on the base polymer powder and comprising a second cross-linked polymer in which the first cross-linked polymer is further cross-linked via a surface crosslinking agent, a sulfonate derivative and a sulfinate derivative,wherein a vortex time measured according to the measurement method of Vortex is 25 to 50 seconds,wherein an extractable content measured according to EDANA method No. WSP 270.2 is 15% by weight or less,wherein in a CIE 1976 colorimetric system, an L value is 90 or more and a b value is 8 or less, andwherein in a CIE 1976 colorimetric system measured after the super absorbent polymer is left under a condition of a temperature of 90° C. and a relative humidity of 90% for 48 hours, an L value is 80 or more and a b value is 9 or less.2. A super absorbent polymer comprising:a base polymer powder comprising a first cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; anda surface cross-linked layer formed on the base polymer powder and including a second cross-linked polymer in which the first cross-linked polymer is further cross-linked via a surface crosslinking agent,wherein a vortex time measured according to the measurement method of Vortex is 25 to 50 seconds,wherein an extractable content measured according to EDANA method No. WSP 270.2 is 15% by weight or less,wherein in a CIE 1976 colorimetric system, an L ...

CHROMOGENIC ABSORBENT MATERIAL FOR ANIMAL LITTER

A chromogenic absorbent material for an animal litter includes an oxidizing agent responsive to peroxidatic/pseudoperoxidatic activity in an animal excretion or a first catalytic compound generating the oxidizing agent in situ. The material also includes a chromogenic indicator being chromogenically responsive to the oxidizing activity of the oxidizing agent, and an absorptive material which is porous, for absorbing the animal excretion. The absorptive material includes a water-absorbing polysaccharide providing absorptive properties to the chromogenic absorbent material; and may also include a second polysaccharide and a superabsorbent polymer. The material may be obtained in the form of particles having a low density and a high porosity, and is usable in conjunction with an animal litter for detecting various diseases in animals. 1. A chromogenic absorbent material for detecting a detectable substance in an animal excretion , the chromogenic absorbent material comprising:a trigger agent;a chromogenic indicator oxidizable into a colored and/or fluorescent substance in the presence of the trigger agent and the detectable substance; andan absorptive material which is porous, for absorbing the animal excretion, the absorptive material comprising a water-absorbing polysaccharide.2. The chromogenic absorbent material of claim 1 , wherein:the detectable substance is a peroxidase or a pseudoperoxidase; andthe trigger agent is an oxidizing agent responsive to peroxidatic/peroxidatic activity in the animal excretion.3. The chromogenic absorbent material of claim 2 , wherein the pseudoperoxidase is haemoglobin.4. The chromogenic absorbent material of claim 2 , wherein the trigger agent is a hydroperoxide or a hydroperoxide precursor.5. The chromogenic absorbent material of claim 1 , wherein:the detectable substance is glucose; andthe trigger agent is a catalytic system comprising a first enzyme which is an oxido-reductase and a second enzyme which is a peroxidase or a ...

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 ...

SUPER ABSORBING RESIN COMPOSITE WITH BASE MATERIAL FOR IMPROVING SOIL WATER RETENTION

A method is described for improving water retention in soil, which involves mixing a super absorbing resin (SAR) composite with the soil. The SAR composite comprises a natural pozzolan and at least one polymer or copolymer. The SAR composite may be in the form of granules having an average longest dimension of 0.2-10 mm, though the SAR composite may be pelletized or formed in other sizes. The SAR composite may release water at a faster rate in a soil when exposed to drought conditions. 1. A method of improving water retention in a soil , the method comprising:mixing a super absorbing resin (SAR) composite with the soil, a fibrous base material,', 'a natural pozzolan, and', 'at least one polymer or copolymer selected from the group consisting of chitosan-alginic acid, chitosan, poly 2-acrylamido-2-methylpropane-sulfonic acid (polyAMPS), polyacrylamide, polyacrylic acid, and sodium alginate,, 'wherein the SAR composite compriseswherein a mixture of the natural pozzolan and the at least one polymer is present on the fibrous base material.2. (canceled)3. The method of claim 1 , wherein the SAR composite is present at a weight percentage of 0.1-5.0 wt % relative to a weight of the soil.4. (canceled)5. The method of claim 1 , wherein the SAR composite comprises:30-40 wt % polyacrylic acid;10-25 wt % polyacrylamide; and40-50 wt % natural pozzolan, each relative to a total weight of the polyacrylic acid, polyacrylamide, and natural pozzolan.6. (canceled)7. The method of claim 1 , wherein the natural pozzolan is at least one selected from the group consisting of metakaolin claim 1 , calcined shale claim 1 , calcined clay claim 1 , volcanic glass claim 1 , zeolitic trass claim 1 , zeolitic tuff claim 1 , tuffs claim 1 , rice husk ash claim 1 , diatomaceous earth claim 1 , and calcined shale.8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. The method of claim 1 , wherein the SAR composite further comprises water at a weight percentage of 20-80 wt % relative to a total ...

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.

Super Absorbent Polymer Composition and Preparation Method for the Same

This invention relates to a superabsorbent polymer composition and a method for preparing the superabsorbent polymer composition. According to the present disclosure, there are provided a superabsorbent polymer composition that can exhibit a rapid absorption time without using a blowing agent, and a method for preparing the superabsorbent polymer composition. 1. A superabsorbent polymer composition comprising:a superabsorbent polymer comprising a base resin comprising crosslinked polymer of acrylic acid based monomers having acid groups of which at least a part are neutralized, and an internal crosslinking agent; and a surface crosslink layer formed on the surface of the base resin, in which the crosslinked polymer is additionally crosslinked by a surface crosslinking agent; andremaining surface crosslinking agent that does not form the surface crosslink layer,wherein the remaining surface crosslinking agent that does not form the surface crosslink layer comprises a carbonate based compound and a diol based compound, a content of the carbonate based compound is 100 ppm or more based on a total weight of the superabsorbent polymer composition, and the content of the diol based compound is 1,000 ppm or more based on the total weight of the superabsorbent polymer composition, andthe superabsorbent polymer composition fulfills the following 1) to 3):1. Vortex time according to a vortex method is 65 seconds or less;2. Extractable contents after swelling for 16 hours, measured according to EDANA method WSP 270.3, is 15wt % or less, based on the total weight of the superabsorbent polymer composition; and{'sup': '3', '3. Bulk density is 0.67 g/cmor more.'}2. The superabsorbent polymer composition according to claim 1 , wherein the surface crosslinking agent comprises one or more carbonate based compounds and one or more diol based compounds.3. The superabsorbent polymer composition according to claim 1 , wherein the carbonate based compound is selected from the group ...

SUPERABSORBENT POLYMER COMPOSITION

A superabsorbent polymer composition includes superabsorbent polymer particles, a chelating agent and a mixture of an organic acid and a silicate-based salt. The superabsorbent polymer particles include crosslinked polymer of water-soluble ethylenically unsaturated monomers including acid groups, of which at least a part are neutralized, and the chelating agent includes EDTA or an alkali metal salt thereof, exhibiting improved antimicrobial and deodorizing properties without deterioration of the superabsorbent polymer properties such as centrifugal retention capacity. 1. A superabsorbent polymer composition comprisingsuperabsorbent polymer particles comprising a crosslinked polymer of water-soluble ethylenically unsaturated monomers including acid groups, of which at least a part are neutralized;a chelating agent including EDTA or an alkali metal salt thereof; anda mixture of an organic acid and a silicate-based salt.2. The superabsorbent polymer composition according to claim 1 , wherein the chelating agent comprises a sodium salt of EDTA(EDTA-2Na) claim 1 , ethylene diamine tetraacetic acid claim 1 , cyclohexane diamine tetraacetic acid claim 1 , diethylene triamine pentaacetic acid claim 1 , ethyleneglycol-bis-(aminoethylether)-N claim 1 ,N claim 1 ,N′-triacetic acid claim 1 , N-(2-hydroxyethyl)-ethylenediamine-N claim 1 ,N claim 1 ,N′-triacetic acid claim 1 , or triethylene tetraamine hexaacetic acid.3. The superabsorbent polymer composition according to claim 1 , wherein the chelating agent is included in a content of 0.1 to 5 parts by weight based on 100 parts by weight of the superabsorbent polymer particles.4. The superabsorbent polymer composition according to claim 1 , wherein the organic acid comprises citric acid claim 1 , fumaric acid claim 1 , maleic acid or lactic acid.5. The superabsorbent polymer composition according to claim 1 , wherein the silicate-based salt includes a salt in which a silicate anion claim 1 , and a cation of alkali metal or ...

Superabsorbent-Based Suspension Suitable For Hydrostimulatory Coating Of Seeds And A Method Of Coating Seeds With The Suspension

A superabsorbent-based suspension for hydrostimulatory coating of seeds comprises a superabsorbent in the form of a copolymer of acrylate and acrylamide in the range of 25 to 40 wt. % of the suspension, adhesives dispersed or dissolved in a solution of water and ethanol and/or of water and isopropanol, wherein the dispersion or solution of the adhesives comprising water in the range of 0.1 to 8 wt. % of the suspension, ethanol and/or isopropanol in the range of 40 to 70 wt. % of the suspension and adhesives in the range 1-10 wt. % of the suspension, further lubricant additives suitable for improving flow properties of seeds in the range of 0.1 to 15 wt. % of the suspension, and an antistatic additive suitable for eliminating electric charge in the range 0.1-5 wt. % of the suspension. A method of coating a seed with this suspension. 1. A superabsorbent-based suspension suitable for hydrostimulatory coating of seeds , comprising a superabsorbent , adhesives dispersed or dissolved in a solution of water and ethanol and/or of water and isopropanol , lubricant additives suitable for improving flow properties of seeds , and an antistatic additive suitable for eliminating electric charge , wherein the superabsorbent in the form of a copolymer of acrylate and acrylamide in the range of 25 to 40 wt. % of the suspension , the dispersion or solution of the adhesives comprising water in the range of 0.1 to 8 wt. % of the suspension , ethanol and/or isopropanol in the range of 40 to 70 wt. % of the suspension and adhesives in the range of 1 to 10 wt. % of the suspension , further the lubricant additives in the range of 0.1 to 15 wt. % of the suspension and the antistatic additive in the range of 0.1 to 5 wt. % of the suspension.2. The suspension according to claim 1 , wherein the superabsorbent is a copolymer of potassium acrylate and acrylamide.3. The suspension according to claim 1 , wherein the adhesive is polyvinyl acetate claim 1 , hydroxymethyl cellulose claim 1 , ...

Super Absorbent Polymer And Method For Preparing Same

The present invention relates to a super absorbent polymer and a method for preparing the same. According to the super absorbent polymer and the method for preparing a super absorbent polymer of the present invention, a laponite is contained in a colloidal solution state during polymerization of the monomer composition, and thus achieves an appropriate crosslinking density, thereby contributing to improvement of various physical properties such as a gel strength and a centrifuge retention capacity of the super absorbent polymer. 1. A method for preparing a super absorbent polymer comprising:preparing a monomer composition containing a water soluble ethylenically unsaturated monomer, an internal crosslinking agent, and a polymerization initiator;mixing the monomer composition with a laponite colloidal solution containing 0.02 to 0.09 part by weight of a positively charged laponite based on 100 parts by weight of the monomer composition to form a mixture of the monomer composition and the lapnotie colloidal solution; andthermally polymerizing or photo-polymerizing the mixture of the monomer composition and the laponite colloidal solution to form a crosslinked polymer.2. The method for preparing a super absorbent polymer according to claim 1 , wherein the laponite colloidal solution includes laponite in the concentration of 0.5% to 10% by weight.3. The method for preparing a super absorbent polymer according to claim 1 , wherein the laponite colloidal solution has a viscosity of 1.2 to 10 cps at 25° C.4. The method for preparing a super absorbent polymer according to claim 1 , wherein a charge amount of the laponite is 1 to 10 mmol/100 g.5. The method for preparing a super absorbent polymer according to claim 1 , wherein the positively charged laponite includes at least one of Laponite XLG claim 1 , Laponite RD claim 1 , Laponite EP claim 1 , Laponite XL21 claim 1 ,or Laponite D.6. The method for preparing a super absorbent polymer according to claim 1 , wherein the ...

Organics recovery from the aqueous phase of biomass catalytic pyrolysis

Disclosed is a process for recovering a water-soluble complex mixture of organic compounds from an aqueous stream through extraction and/or through contact of the aqueous stream with a sorbent or sorbents selected from the group consisting of polymeric microreticular sorbent resins, zeolite-based adsorbents, clay-based adsorbents, activated carbon-based sorbents, and mixtures thereof; and including methods to recover the removed organic compounds.

Super Absorbent Polymer And Its Preparation Method

The present disclosure relates to a super absorbent polymer exhibiting improved rewetting property and excellent absorption property, and a preparation method of the same. This preparation method of a super absorbent polymer includes the steps of: preparing a base resin in which an acrylic acid-based monomer having at least partially neutralized acidic groups and an internal cross-linking agent are cross-linked and polymerized; and heating the base resin in the presence of a surface cross-linking agent to carry out surface modification, wherein the internal cross-linking agent includes a poly(meth)acrylate of polyols-based first internal cross-linking agent and a polyglycidyl ether of polyols-based second internal cross-linking agent in a specific weight ratio. 1. A preparation method of a super absorbent polymer , comprising:preparing a base resin in which an acrylic acid-based monomer having at least partially neutralized acidic groups and an internal cross-linking agent are cross-linked and polymerized; andheating the base resin in the presence of a surface cross-linking agent and a polyvalent metal salt to carry out surface modification,wherein the internal cross-linking agent comprises a poly(meth)acrylate of polyols-based first internal cross-linking agent and a polyglycidyl ether of polyols-based second internal cross-linking agent in a weight ratio of 1:20 to 1:300.2. The preparation method of claim 1 ,wherein the first internal cross-linking agent comprises at least one selected from the group consisting of 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 glycol di(meth)acrylate, tripropylene glycol di(meth)acrylate, tetraethylene glycol di(meth)acrylate, dipentaerythritol pentaacrylate, ...

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 ...

Absorbent composite, an absorbent article employing the same, and methods, systems, and apparatus for making the absorbent composite and/or article

An absorbent core composite is disclosed for incorporation into a disposable absorbent article. The composite includes a first material layer and a second material layer (preferably nonwoven) partially secured to the first material layer to define at least one pocket therebetween. Preferably, multiple pockets are defined, except in the case of where a generally uniform layer or bed of absorbent is preferred or better suited for the application. The pocket is said have a fixed initial volume. Further, an aggregate of absorbent particles is provided in the pocket(s) to occupy a portion of the fixed initial volume. The absorbent particles are preferably SAP particles and is characterized by a dry volume associated with a dry state and a swell volume associated with a liquid saturation state. In respect to or for the pocket, the aggregate is characterized by a collective dry volume and a collective swell volume, wherein the pocket has an initial configuration that retains the aggregate therein.

Super Absorbent Polymer

The present invention relates to a super absorbent polymer which exhibits totally well-balanced and excellent physical properties through the optimization of a centrifuge retention capacity, an absorbency under pressure, a liquid permeability and a gel strength. Such a super absorbent polymer is a super absorbent polymer comprising a cross-linked polymer in which a base polymer in the form of a powder obtained by polymerizing water-soluble ethylene-based unsaturated monomers having an acidic group in which at least a part thereof is neutralized is subjected to a surface crosslinking, and a centrifuge retention capacity (CRC), an absorbency under pressure (AUP), a liquid permeability (physiological saline solution flow conductivity; SFC), a horizontal gel strength (G′) or the like can satisfy a predetermined relationship of formula. 3. The method according to claim 1 , wherein one or more internal crosslinking agents are selected from the group consisting of bis(meth)acrylamide having 8 to 12 carbon atoms claim 1 , poly(meth)acrylate of polyol having 2 to 10 carbon atoms and poly(meth)allyl ether of polyol having 2 to 10 carbon atoms.4. The method according to claim 1 , wherein the super absorbent polymer has a particle size of 150 to 850 μm. This application is a divisional of U.S. application Ser. No. 15/315,111 filed on Nov. 30, 2016, which is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/KR2015/005957 filed Jun. 12, 2015, which claims the benefit of Korean Patent Application Nos. 10-2014-0071547 filed on Jun. 12, 2014, 10-2014-0177736 filed on Dec. 10, 2014, and 10-2015-0082881 filed on Jun. 11, 2015, the disclosures of which are incorporated herein by reference in their entirety.The present invention relates to a super absorbent polymer which exhibits totally well-balanced and excellent physical properties through the optimization of a centrifuge retention capacity, an absorbency under pressure, a liquid permeability and a gel ...

ADSORBENT POLYMERIC STRUCTURES FOR SEPARATING POLAR LIQUIDS FROM NON-POLAR HYDROCARBONS

Adsorbent polymeric structures are described. These adsorbent polymeric structures are capable of separating non-polar hydrocarbons, such as crude oil or diesel fuel, from polar liquids, such as water. The adsorbent polymeric structures may include acid grafted graphene and at least one styrene. A method of preparing an adsorbent polymeric structure may include mixing graphene and at least one acid catalyst in a polar liquid in the presence of at least one alcohol to form an acid grafted graphene via an esterification reaction; and the acid grafted graphene and at least one styrene monomer are introduced to water in the presence of an initiator to form the adsorbent polymeric structure according to any of the previously-described embodiments via an emulsion polymerization reaction. Moreover, the adsorbent polymeric structures may be incorporated into methods of fluidly separating at least one non-polar hydrocarbon from a polar liquid. 2. The adsorbent polymeric structure of claim 1 , in which the aliphatic moiety Rhas 9 carbons.3. The adsorbent polymeric structure of claim 1 , in which n is an integer with a value of 5.4. The adsorbent polymeric structure of claim 1 , in which Xis a graphene-containing moiety having from 25 carbons to 75 carbons.5. The adsorbent polymeric structure of claim 1 , in which the adsorbent polymeric structure according to formula (I) has a BET surface area of at least 250 m/g.8. The method of claim 7 , in which the initiator comprises ammonium persulfate claim 7 , sodium persulfate claim 7 , potassium persulfate claim 7 , or combinations thereof.9. The method of claim 7 , in which the at least one alcohol comprises a straight chain primary alcohol having the formula CHO and x is an integer ranging from 1 to 12.10. The method of claim 7 , in which the at least one alcohol comprises ethanol.11. The method of claim 7 , in which a buffer comprising at least one ion salt is added during the emulsion polymerization reaction.12. The method of ...

SUPER ABSORBENT POLYMER

The present invention relates to a super absorbent polymer which exhibits totally well-balanced and excellent physical properties through the optimization of a centrifuge retention capacity, an absorbency under pressure, a liquid permeability and a gel strength. Such a super absorbent polymer is a super absorbent polymer comprising a cross-linked polymer in which a base polymer in the form of a powder obtained by polymerizing water-soluble ethylene-based unsaturated monomers having an acidic group in which at least a part thereof is neutralized is subjected to a surface crosslinking, and a centrifuge retention capacity (CRC), an absorbency under pressure (AUP), a liquid permeability (physiological saline solution flow conductivity; SFC), a horizontal gel strength (G′) or the like can satisfy a predetermined relationship of formula. 3. The super absorbent polymer according to wherein the super absorbent polymer has CRC of 25 to 35 g/g.4. The super absorbent polymer according to wherein the super absorbent polymer has AUP of 21 to 30 g/g.5. The super absorbent polymer according to wherein the super absorbent polymer has a horizontal gel strength G′ of 6 claim 1 ,000 to 12 claim 1 ,000 Pa.6. The super absorbent polymer according to wherein the super absorbent polymer has SFC of 40 to 85 (·10cm·s/g)).7. The super absorbent polymer according to wherein the horizontal gel strength G′ of the super absorbent resin is measured by a method comprising the steps of:absorbing a physiological saline solution to the super absorbent polymer to swell the super absorbent polymer;positioning the swelled super absorbent polymer between plates of a rheometer having a predetermined interval to pressurize the two plate surfaces;confirming a shear strain in the linear viscoelastic regime section where storage modulus and loss modulus are steady, while increasing the shear strain using the rheometer under vibration; andmeasuring the storage modulus and the loss modulus of the swelled super ...

METHOD FOR PREPARING SUPER ABSORBENT POLYMER AND SUPER ABSORBENT POLYMER PREPARED THEREBY

The present invention relates to a method for preparing super absorbent polymer, and the method for preparing super absorbent polymer according to the present invention may reduce the content of non-reacted monomers in the super absorbent polymer, by using three kinds of polymerization initiators. 1. A method for preparing super absorbent polymer comprising the steps of:1) polymerizing a monomer composition comprising a water soluble ethylene-based unsaturated monomer, a photopolymerization initiator, a first thermal polymerization initiator with a decomposition temperature of 40 to 120° C., and a second thermal polymerization initiator with a decomposition temperature of 120 to 250° C. to prepare a hydrous gel phase polymer,2) drying the hydrous gel phase polymer, and3) milling the dried polymer.2. The method for preparing super absorbent polymer according to claim 1 , wherein the water soluble ethylene-based unsaturated monomer is a compound represented by the following Chemical Formula 1:{'br': None, 'sub': '1', 'sup': '1', 'R—COOM\u2003\u2003[Chemical Formula 1]'}wherein,{'sup': '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 method for preparing super absorbent polymer according to claim 1 , wherein the water soluble ethylene-based unsaturated monomer includes one or more selected from the group consisting of anionic monomers such as acrylic acid claim 1 , methacrylic acid claim 1 , maleic anhydride claim 1 , fumaric acid claim 1 , crotonic acid claim 1 , itaconic acid claim 1 , 2-acryloylethane sulfonic acid claim 1 , 2-methacryloylethane sulfonic acid claim 1 , 2-(metha)acryloylpropane sulfonic acid claim 1 , or 2-(meth)acrylamide-2-methyl propane sulfonic acid claim 1 , or salts thereof; non-ionic hydrophilic monomers such as (meth)acrylamide claim 1 , N-substituted (meth)acrylate claim 1 , 2- ...

Super Absorbent Polymer and Method for Preparing Same

The present invention relates to a super absorbent polymer. The super absorbent polymer contains polymer particles formed of large pores in a certain amount or more, and thus can exhibit large surface area and excellent initial absorption capacity. Therefore, when the super absorbent polymer is used, it can provide a sanitary material such as a diaper or a sanitary napkin which can quickly absorb body fluids and impart a dry and soft touch feeling. 1. A super absorbent polymer comprising:a base polymer powder including a cross-linked polymer obtained by 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 an encapsulated foaming agent; anda surface cross-linked layer that is further cross-linked from the cross-linked polymer and is formed on the base polymer powder,{'sub': 1', '0', '1', '0, 'wherein a ratio (M/M*100) of a super absorbent polymer particle (M) having three or more pores with a diameter of 20 to 200 μm on the surface to a super absorbent polymer particle (M) having a particle diameter of 300 to 425 μm, is 10% or more, and'}wherein a distilled water absorption capacity is at least 150 g/g.2. The super absorbent polymer according to claim 1 , wherein the super absorbent polymer has a centrifuge retention capacity (CRC) for a physiological saline solution of 30 to 45 g/g.3. The super absorbent polymer according to claim 1 , wherein the ratio (M/M*100) of the super absorbent polymer particle (M) having three or more pores with a diameter of 20 to 200 μm on the surface to the super absorbent polymer particle (M) having a particle diameter of 300 to 425 μm claim 1 , is 20 to 70% claim 1 , andwherein the distilled water absorption capacity is 150 to 500 g/g.4. The super absorbent polymer according to claim 1 , wherein the encapsulated foaming agent has a structure including a core containing hydrocarbon and a shell surrounding the core and formed of a ...

Process and Apparatus for Manufacturing Water-Absorbing Material and Use in Cat Litter

A process for manufacturing particles of water-absorbing material is provided. The process includes providing a powder bed composed of an absorptive powder comprising a water-absorbing polysaccharide onto a surface; releasing an aqueous solution from a solution dispenser so as to contact the powder bed, thereby forming a solution-impregnated humid material; letting the solution-impregnated humid material agglomerate in substantially shear-less conditions to form an agglomerated humid material, the solution-impregnated humid material being supported by the surface; and drying the agglomerated humid material, thereby forming the particles. 196.-. (canceled)97. A process for manufacturing a chromogenic absorbent material for detecting for detecting glucose in an animal excretion , the process comprising:providing an absorptive powder comprising a water-absorbing polysaccharide onto a surface, thereby obtaining a powder bed; an oxido-reductase;', 'a peroxidase or pseudoperoxidase; and', 'a chromogenic indicator oxidizable into a colored and/or fluorescent substance in the presence of the oxido-reductase, the peroxidase or pseudoperoxidase and glucose;, 'releasing a chromogenic solution from a solution dispenser so as to contact the powder bed, thereby forming a solution-impregnated humid material, the chromogenic solution comprisingmaintaining the solution-impregnated humid material supported by the surface and in substantially shear-less conditions until the solution-impregnated humid material agglomerates to produce an agglomerated humid material; and{'sup': 3', '3, 'drying the agglomerated humid material, thereby forming the chromogenic absorbent material, the chromogenic absorbent material having a density of about 0.20 g/cmto about 0.39 g/cm,'}wherein the absorptive powder is unreactive to the oxido-reductase.98. The process of claim 97 , wherein the surface is a substantially planar surface.99. The process of claim 97 , further comprising displacing the solution- ...

Super Absorbent Polymer And Method For Preparing Same

The present invention relates to a super absorbent polymer and a method for preparing the same. According to the method for preparing a super absorbent polymer of the present invention, the super absorbent polymer +having improved absorption capacity and permeability can be prepared. 1. A method for preparing a super absorbent polymer comprising:thermally polymerizing or photo-polymerizing a monomer composition including an acrylic acid-based monomer having an acidic group, of which at least a part is neutralized, and a polymerization initiator to form a hydrogel polymer;drying the hydrogel polymer;pulverizing the dried polymer;mixing the pulverized polymer with a surface crosslinking agent and an aliphatic alcohol of C6 or greater to form a mixture;heating the mixture to carry out a surface modification.2. The method for preparing a super absorbent polymer according to claim 1 , wherein the aliphatic alcohol of C6 or greater includes primary claim 1 , secondary or tertiary alcohols of C6 to C20.3. The method for preparing a super absorbent polymer according to claim 2 , wherein the aliphatic alcohol of C6 or greater includes one or more selected from the group consisting of stearyl alcohol claim 2 , lauryl alcohol claim 2 , and cetyl alcohol.4. The method for preparing a super absorbent polymer according to claim 1 , wherein the aliphatic alcohol of C6 or greater is mixed in an amount of 0.001 to 2 parts by weight based on 100 parts by weight of the pulverized polymer.5. The method for preparing a super absorbent polymer according to claim 1 , wherein the aliphatic alcohol of C6 or greater is added separately before adding the surface crosslinking agent to the pulverized polymer claim 1 , or is added together with the surface crosslinking agent.6. The method for preparing a super absorbent polymer according to claim 1 , wherein the surface modification is carried out by heating the mixture of the polymer claim 1 , the surface crosslinking agent and the aliphatic ...

Preparation Method of Super Absorbent Polymer

The present disclosure relates to a preparation method of a super absorbent polymer capable of preparing a super absorbent polymer exhibiting an improved absorption rate while reducing an amount of a blowing agent used. The preparation method of a super absorbent polymer includes: preparing a monomer mixture including a water-soluble ethylene-based unsaturated monomer having at least partially neutralized acidic groups and an internal cross-linking agent; adjusting a dynamic pressure applied to the monomer mixture being transferred to 140 Pa or more by controlling a transfer rate while transferring the monomer mixture to a polymerization reactor; cross-linking and polymerizing the monomer mixture transferred to the polymerization reactor to form a hydrogel polymer; drying, pulverizing and classifying the hydrogel polymer to form a base resin powder; and further cross-linking a surface of the base resin powder in the presence of a surface cross-linking agent to form a surface cross-linked layer. 1. A preparation method of a super absorbent polymer , comprising:preparing a monomer mixture comprising a water-soluble ethylene-based unsaturated monomer having at least partially neutralized acidic groups and an internal cross-linking agent;transferring the monomer mixture to a polymerization reactor;during the transferring the monomer mixture to the polymerization reactor, adjusting a dynamic pressure applied to the monomer mixture being transferred calculated by the following Equation 1 to 140 Pa or more by controlling a transfer rate;cross-linking and polymerizing the monomer mixture transferred to the polymerization reactor to form a hydrogel polymer;drying, pulverizing and classifying the hydrogel polymer to form a base resin powder; and {'br': None, 'i': '*p*V', 'sup': '2', 'Dynamic pressure=1/2\u2003\u2003[Equation 1]'}, 'further cross-linking a surface of the base resin powder in the presence of a surface cross-linking agent to form a surface cross-linked layer{' ...

DISPERSIONS OF SUPERABSORBENT POLYMERS, PROCESSING THEREOF AND ARTICLES FORMED FROM THE DISPERSIONS

Dispersions of superabsorbent polymers are described comprising blends of polyols and super absorbent polymer. Products comprising deposits formed from such dispersions are also described. Suitable polyols can include, for example, polyethylene glycol. The dispersions can be flowed onto an absorbent sheet to form a deposit (sheeted SAP), which in some embodiments can be along a fraction of the sheet surface. Generally, the deposits are dried through a wicking process in which the polyol is wicked away from the superabsorbent polymer. The sheeted SAP can be incorporated into a final product with the deposit secured within the product. The dispersion allows for selective placement of superabsorbent polymer onto an absorbent sheet and/or in a final product. Embodiments based on coated yarns and the like are also presented. 1. A blend comprising: superabsorbent polymer (SAP) and at least about 15 weight percent polyol that is liquid at or above 65° C. , wherein the SAP is dispersed in a matrix of the polyol and wherein the blend comprises at least about 85 weight percent of SAP and polyethylene glycol (PEG) combined.2. The blend of wherein the polyol is a liquid at room temperature and wherein the blend is a room temperature flowable composition.3. The blend of wherein the blend is a solid at room temperature and has a melting point of no more than about 65° C.4. The blend of wherein the SAP comprises salts of polyacrylic acid and wherein the polyol is polyethylene glycol.5. The blend of comprising from about 5 weight percent SAP to about 85 weight percent SAP.6. The blend of where in the polyethylene glycol has an average molecular weight of no more than about 800 g/mol.7. The blend of comprising at least about 45 weight percent polyether polyol and superabsorbent polymers with prior to dispersion an average particle size from about 10 microns to about 250 microns and an absorption of at least about 8 weight percent of aqueous (0.9 weight % sodium chloride) solution.8. ...

Method For Preparing Superabsorbent Polymer And Superabsorbent Polymer Prepared Thereby

The present invention relates to a method for preparing superabsorbent polymer that has not only excellent permeability and absorption speed, but also minimized absorbency under pressure decrease rate, and superabsorbent polymer prepared thereby. 1. A method for preparing superabsorbent polymer comprising the steps of:(a) conducting crosslinking polymerization of a monomer mixture comprising a water soluble ethylenically unsaturated monomer having an acid group of which at least a part is neutralized, in the presence of an internal crosslinking agent, to form a hydrogel polymer;(b) drying, grinding and sieving the hydrogel polymer to form a base resin powder;(c) mixing the base resin powder with a surface crosslinking solution comprising a first inorganic material and a surface crosslinking agent to form a surface crosslinked layer; and(d) adding a second inorganic material to the base resin powder on which the surface crosslinked layer is formed,{'sup': 2', '2, 'wherein the second inorganic material comprises alumina having a BET specific surface area of 50 m/g to 200 m/g.'}2. The method for preparing the superabsorbent polymer according to claim 1 , wherein the first inorganic material included in the surface crosslinked layer contacts the surface of the base resin powder.3. The method for preparing the superabsorbent polymer according to claim 1 , wherein a content of the second inorganic material is 1 part by weight to 2000 parts by weight claim 1 , based on 100 parts by weight of the first inorganic material.4. The method for preparing the superabsorbent polymer according to claim 1 , wherein in the (c) step of forming a surface crosslinked layer claim 1 , a content of the first inorganic material is 0.001 parts by weight to 1 part by weight claim 1 , based on 100 parts by weight of the base resin powder.5. The method for preparing the superabsorbent polymer according to claim 1 , wherein in the (d) step of adding the second inorganic material claim 1 , a ...

SUPERABSORBENT MATERIALS AND METHODS OF MAKING THE SAME

Provided are superabsorbent materials composed of one or more water-soluble polysaccharides, such as gelling polysaccharides and gelling-compatible polysaccharides, and one or more insoluble fibers. The disclosed superabsorbent materials have a porous network structure and highly stable gelling properties as well as high absorption ratio and volume expansion capacity upon hydration or rehydration. Also provided are methods for preparing such superabsorbent materials and uses thereof. 1. A material comprising one or more water-soluble polysaccharides and one or more insoluble fibers , wherein the ratio by weight between the total amount of the water-soluble polysaccharides and the total amount of the insoluble fibers is between about 1:1 and about 30:1;wherein the water-soluble polysaccharides comprise (i) one or more gelling polysaccharides, (ii) one or more gelling-compatible polysaccharides, or (iii) both one or more gelling polysaccharides and one or more gelling-compatible polysaccharides;wherein the one or more water-soluble polysaccharides and the one or more insoluble fibers form a superabsorbent material having a porous network structure without chemical cross-linking;wherein the superabsorbent material has a volume expansion ratio of at least 10 times or up to 150 times in less than 2 hours; and{'sup': 2', '2, 'wherein when the superabsorbent material is hydrated, the porous network structure comprises a plurality of pores with a two-dimensional pore density in a range of 1 per 100 micrometers squared (μm) to 500 per 100 micrometers squared (μm) and the pores have an average diameter size in the range of 1 micrometer (μm) to 30 micrometers (μm).'}2psyllium. The material of claim 1 , wherein the one or more gelling polysaccharides are selected from the group consisting of agar claim 1 , carrageenan claim 1 , konjac gum claim 1 , husk claim 1 , alginate claim 1 , pectin claim 1 , gellan claim 1 , chitosan claim 1 , and curdlan.3. The material of claim 1 , ...

Biobased Super-Absorbing Polymers

The present invention is in the field of extraction a product for liquid absorption comprising a low-density biopolymer, such as obtainable from a granular sludge, in particular alginate or bacterial alginate, wherein the biobased polymer acts as a super-absorbing material, and a method of obtaining said product. 123-. (canceled)24. A product for liquid absorption comprising:a super-absorbing material of biobased polymer, wherein the biobased polymer is produced by a microorganism selected from bacteria, algae and fungi, comprising 20-99.8 wt. % low density polymer material, with a density <0.5 gr/cm3,wherein the super-absorbing biobased polymer material is a non-woven material, and/or wherein the super-absorbing biobased polymer material comprises fibres, and/or wherein the super-absorbing biobased polymer material comprises a powder with particle sizes >0.1 mm,0-80 wt. % fillers,0-10 wt. % cross-linking agent,0-30 wt. % water-soluble polymer,0-2 wt. % buffer,0-2 wt. % additive,0-5 wt. % lipids, andthe remainder being water, wherein all percentages are relative to a total weight of the super-absorbing material.25. The product according to claim 24 , wherein the product is selected from a diaper claim 24 , an incontinence product claim 24 , concrete claim 24 , a personal hygiene product claim 24 , a soil-improver claim 24 , a water retainer claim 24 , a wound dressing claim 24 , a liquid absorbent claim 24 , a thermal insulator claim 24 , a thermal clothing layer claim 24 , a thermal insulating panel claim 24 , a protective sheet or laminate claim 24 , a filter claim 24 , and an absorbent pan component.26. The product according to claim 24 , wherein the biobased polymer is produced by a microorganism claim 24 , selected from the order Pseudomonadaceae claim 24 , the order Planctomycetales claim 24 , and algae claim 24 , and the biobased polymer is alginate.27. The product according to claim 24 , wherein the super-absorbing biobased polymer is immobilized in the ...

Process and Apparatus for Manufacturing Water-Absorbing Material and Use in Cat Litter

A process for manufacturing particles of water-absorbing material is provided. The process includes providing a powder bed composed of an absorptive powder comprising a water-absorbing polysaccharide onto a surface; releasing an aqueous solution from a solution dispenser so as to contact the powder bed, 5 thereby forming a solution-impregnated humid material; letting the solution-impregnated humid material agglomerate in substantially shear-less conditions to form an agglomerated humid material, the solution-impregnated humid material being supported by the surface; and drying the agglomerated humid material, thereby forming the particles.

Belt dryer arrangement for drying an aqueous polymer gel and for comminuting the dried polymer gel to form dried polymer particles, and method for drying an aqueous polymer gel and for comminuting the dried polymer gel to form dried polymer particles

A belt drier arrangement for drying an aqueous polymer gel and for comminuting the dried polymer gel to give dried polymer particles, having: a belt drier having a drier setup and a conveyor belt for receiving and for drying the aqueous polymer gel to give a dry cake or fragments on a receiving surface of the conveyor belt, and a comminution arrangement, disposed downstream of the drier setup in product flow direction, for comminution of the dried polymer gel of the dry cake or fragments to give dried comminuted polymer particles. The comminution arrangement has a comminutor in the form of a milling drum which is disposed with an upper working line of a working edge of the milling drum at the level of or above a receiving surface of a conveyor belt, for mill processing of the dry cake or of the fragments, where the milling drum is designed to eject comminuted dried polymer particles of the dry cake or of the fragments in the downward direction.

METHOD FOR PREPARING SUPER ABSORBENT POLYMER

The present invention relates to a method for a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention makes it possible to provide a super absorbent polymer in which characteristics such as a centrifuge retention capacity and an absorption rate are improved in a balanced manner. 1. A method for preparing a super absorbent polymer , the method comprising the steps of:forming a first hydrogel polymer containing a crosslinked polymer of acrylic acid or its salt, and having a first centrifuge retention capacity (CRC; g/g) for a physiological saline solution measured in accordance with EDANA recommended test method No. WSP 241.2 and a first absorption rate (sec) measured according to the vortex test carried out under conditions of stirring 50 ml of 0.9 wt % NaCl solution at a rate of 600 rpm;forming a second hydrogel polymer containing a crosslinked polymer of acrylic acid or its salt, and having a second centrifuge retention capacity (CRC; g/g) in which a difference between the first centrifuge retention capacity and the second centrifuge retention capacity is −2 g/g to 2 g/g, and a second absorption rate (sec) in which a difference between the first absorption rate and the second absorption rate is 5 sec or more.forming a mixture of the first hydrogel polymer and the second hydrogel polymer;drying the polymer mixture;pulverizing the dried polymer mixture; andsurface-crosslinking the pulverized polymer mixture.2. The method for preparing a super absorbent polymer super absorbent polymer of claim 1 , whereinthe step of forming the first hydrogel polymer includes the steps of: polymerizing a monomer aqueous solution containing acrylic acid or its salt in the presence of an internal crosslinking agent to form a first crosslinked polymer; and coarsely pulverizing the first crosslinked polymer; andthe step of forming the second hydrogel polymer includes the steps of: polymerizing a monomer aqueous solution containing ...

Method for Preparing Super Absorbent Polymer

The present disclosure relates to a method for preparing a super absorbent polymer that can appropriately control the water content of the super absorbent polymer by hydration or the like to suppress crushing or the like during transfer, and also can suppress deterioration of physical properties, such as production of giant particles and nonuniformity of water content during hydration step.

Water absorbing agent and method for producing the same

The present invention provides (i) a water absorbing agent which is excellent in a water absorbing physical properties, in particular water absorbing speed and has a great bulk specific gravity and (ii) a method for producing the water absorbing agent. The method for producing the water absorbing agent includes a surfactant adding step of adding a surfactant whose HLB is 10 or less. The surfactant adding step is the step of adding a dispersion liquid, which contains the surfactant equivalent to 30 parts by weight to 150 parts by weight, relative to 1000000 parts by weight of a water absorbent resin solid content, and the surfactant adding step is carried out after a drying step. Further, in a case where a water-soluble polyvalent metal salt adding step is carried out after the drying step, the surfactant adding step is carried out after the water-soluble polyvalent metal salt adding step.

METHOD FOR DISCHARGING SUPERABSORBENT PARTICLES FROM A SILO AND FILLING THEM INTO BULK CONTAINERS

Filling process for superabsorbent polymer particles The invention relates to a filling process for superabsorbent polymer particles, comprising discharging the superabsorbent polymer particles out of a silo into bulk container for shipping, wherein the filling level of the silo during filling of the bulk container is never less than 20%, in order to avoid particle segregation. 1. A filling process for superabsorbent polymer particles , wherein the superabsorbent polymer particles are discharged out of a silo into n bulk containers , n is an integer , the sum of the filled volumes of the n bulk container corresponds to more than 80% of the effective volume of the silo and the filling level of the silo during filling of the n bulk containers is not less than 20%.2. The process according to claim 1 , wherein the sum of filled volumes of the n bulk containers corresponds to more than 85% of the effective volume of the silo and the filling level of the silo during filling of the n bulk container is not less than 30%.3. The process according to claim 1 , wherein the sum of filled volumes of the n bulk containers corresponds to more than 90% of the effective volume of the silo and the filling level of the silo during filling of the n bulk container is not less than 40%.4. The process according to claim 1 , wherein the sum of filled volumes of the n bulk containers corresponds to more than 95% of the effective volume of the silo and the filling level of the silo during filling of the n bulk containers is not less than 50%.5. The process according to claim 1 , wherein the cone angle of the silo is smaller than 30° from the vertical.6. The process according to claim 1 , wherein the effective volume of the silo is at least 100 m.7. The process according to claim 1 , wherein the effective volume of the silo is at least 300 m.8. The process according to claim 1 , wherein the effective volume of the silo is at least 500 m.9. The process according to claim 1 , wherein the silo is ...

PREPARATION METHOD OF SUPERABSORBENT POLYMER AND SUPERABSORBENT POLYMER PREPARED THEREBY

Provided are a preparation method of a superabsorbent polymer, and a superabsorbent polymer prepared thereby. The preparation method of the superabsorbent polymer according to the present disclosure enables preparation of the superabsorbent polymer which is excellent in absorption properties such as centrifuge retention capacity and absorbency under pressure, and also has improved permeability. In addition, the preparation method exhibits excellent operability during the preparation (in particular, surface crosslinking of the polymer) and excellent productivity due to low production of coarse particles and fine particles. 2. The superabsorbent polymer of claim 1 , wherein the superabsorbent polymer has liquid permeability (SFC) of 10×10cm*s/g to 150×10cm*s/g claim 1 , centrifuge retention capacity (CRC) of 20 g/g to 40 g/g claim 1 , absorbency under pressure (AUP) of 15 g/g to 30 g/g claim 1 , and permeability dependent absorption under pressure (PDAUP) of 10 g/g to 25 g/g.3. The superabsorbent polymer of claim 1 , wherein the polycarboxylic acid-based copolymer is present on an amount of 0.001 to 5% by weight claim 1 , based on 100 parts by weight of the pulverized polymer.4. The superabsorbent polymer of claim 1 , wherein the polycarboxylic acid-based copolymer has a weight average molecular weight of 500 to 1 claim 1 ,000 claim 1 ,000 g/mol.5. The superabsorbent polymer of claim 1 , wherein the polycarboxylic acid-based copolymer is a random copolymer derived from methoxy polyethylene glycol monomethacrylate and (meth)acrylic acid. This application is a divisional of U.S. application Ser. No. 15/124,156, filed Sep. 7, 2016 which is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/KR2015/005956, filed Jun. 12, 2015, which claims priority from Korean Patent Application No. 10-2014-0072343, filed Jun. 13, 2014. The disclosures of which are incorporated herein by reference.The present disclosure relates to a preparation method of a ...

SUPERABSORBER MIXTURES

Superabsorbent mixtures M comprising at least 70% by weight of superabsorbent A having a liquid absorption of 20 g/g (T20) of less than 300 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 400 s, and at least 5% by weight of superabsorbent B having a centrifuge retention capacity (CRC) of at least 30 g/g. 1. A superabsorbent mixture M comprising at least 70% by weight of superabsorbent A having a liquid absorption of 20 g/g (T20) of less than 300 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 400 s , and at least 5% by weight of superabsorbent B having a centrifuge retention capacity (CRC) of at least 30 g/g.2. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A has a liquid absorption of 20 g/g (T20) of less than 240 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 350 s.3. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A has a liquid absorption of 20 g/g (T20) of less than 180 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 250 s.4. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A has a liquid absorption of 20 g/g (T20) of less than 120 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 200 s.5. The superabsorbent mixture M according to claim 1 , wherein superabsorbent B has a centrifuge retention capacity (CRC) of at least 35 g/g.6. The superabsorbent mixture M according to claim 1 , wherein superabsorbent B has a centrifuge retention capacity (CRC) of at least 40 g/g.7. The superabsorbent mixture M according to claim 1 , wherein superabsorbent B has a centrifuge retention capacity (CRC) of at least 45 g/g.8. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A has ...

Superabsorbent Polymer Composition

A superabsorbent polymer composition exhibiting very improved antimicrobial and deodorizing properties while maintaining basic absorption performance, and can significantly reduce the generation of dust during the application for a process, and thus fulfills both stability and processability and can be usefully applied for hygienic goods such as a diaper and the like. The superabsorbent polymer composition includes: a) superabsorbent polymer particles including a crosslinked polymer of water-soluble ethylenically unsaturated monomers including acid groups, of which at least a part are neutralized, and b) an antimicrobial agent having a controlled particle size, containing a chelating agent including EDTA or an alkali metal salt thereof; a mixture of an organic acid and a silicate-based salt; and an agent for controlling a particle size. 1. A superabsorbent polymer composition comprising:superabsorbent polymer particles comprising a crosslinked polymer of water-soluble ethylenically unsaturated monomers including acid groups, wherein at least a part of the acid groups are neutralized; andan antimicrobial agent having a controlled particle size,wherein the antimicrobial agent includes a chelating agent including EDTA or an alkali metal salt thereof, a mixture of an organic acid and a silicate-based salt, and an agent for controlling a particle size.2. The superabsorbent polymer composition according to claim 1 , wherein the antimicrobial agent for controlling a particle size is included in a content of 0.1 to 5 parts by weight claim 1 , based on 100 parts by weight of a sum of the chelating agent claim 1 , and the mixture of the organic acid and the silicate-based salt.3. The superabsorbent polymer composition according to claim 1 , wherein the antimicrobial agent for controlling a particle size is one or more selected from the group consisting of mineral oil claim 1 , natural oil claim 1 , baby oil claim 1 , corn oil claim 1 , olive oil claim 1 , and silicone oil.4. ...

DESICCANT AND DEODORIZING DEVICE

A system and device for drying and deodorizing coolers includes a core layer including a desiccant and a deodorizer encased within a liquid resistant vapor barrier material. The device also includes a first super absorbent layer including a super absorbent polymer encased within a liquid permeable fabric. 1. A device for drying and deodorizing coolers , comprising:a desiccant and deodorizing member including a desiccant and a deodorizer encased within a liquid resistant, vapor permeable barrier material; anda first liquid absorbent member including a super absorbent polymer encased within a liquid permeable fabric.2. The device according to claim 1 , wherein the device is in the form of a pouch.3. The device according to claim 1 , wherein the desiccant and deodorizing member is a core layer claim 1 , and the first liquid absorbent member is a first super absorbent layer adjacent the core layer.4. The device according to claim 1 , wherein the desiccant is silica desiccant.5. The device according to claim 1 , wherein the deodorizer is sodium bicarbonate.6. The device according to claim 1 , wherein the liquid resistant claim 1 , vapor permeable barrier material is a spun bound microporous fabric.7. The device according to claim 1 , wherein the super absorbent polymer is sodium polyacrylate.8. The device according to claim 1 , wherein the liquid permeable fabric is a polyester or polyethylene nonwoven liquid permeable fabric.9. The device according to claim 1 , further including a cooler into which the pouch is placed.10. The device according to claim 1 , further including a second liquid absorbent member including a super absorbent polymer encased within a liquid permeable fabric claim 1 , the first liquid absorbent member being positioned along a top first surface of the desiccant and deodorizing member and the second liquid absorbent member being positioned along a bottom second surface of the desiccant and deodorizing member.11. The pouch according to claim 10 , ...

METHOD FOR THE PRODUCTION OF SUPERABSORBERS

A process for producing superabsorbents, comprising polymerization, drying, crushing, pneumatic conveying, comminuting and classifying, wherein the gas temperature at the end of the pneumatic conveying is from 50 to 95° C. 1. A process for producing superabsorbents by polymerizing a monomer solution or suspension comprisinga) an ethylenically unsaturated monomer which bears an acid group and is at least partly neutralized,b) at least one crosslinker,c) at least one initiator,d) optionally an ethylenically unsaturated monomer copolymerizable with the monomer mentioned under a), ande) optionally one or more water-soluble polymer,comprisingi) polymerizing the monomer solution or suspension,ii) optionally comminuting the polymer gel obtained in step i),iii) drying the polymer gel obtained in step i) or step ii) in an air circulation belt drier with multiple heating zones and at least one cooling zone,iv) crushing the dried polymer gel obtained in step iii),v) optionally coarsely comminuting the polymer particles obtained in step iv),vi) pneumatically conveying the polymer particles obtained in step iv) or step v),vii) optionally removing incompletely dried polymer particles from the polymer particles obtained in step vi), and further processing the remaining dried polymer particles in step viii), step ix), or step x),viii) optionally classifying the polymer particles obtained in step vi) or step vii), and sending the coarse fraction to step ix) or step x),ix) optionally intermediately storing the polymer particles obtained in step vi), step vii), or step viii),x) comminuting the polymer particles obtained in step vi), step vii), step viii), or step ix),xi) optionally pneumatically conveying the polymer particles obtained in step x),xii) classifying the polymer particles obtained in step x) or step xi), andxiii) optionally surface postcrosslinking the classified polymer particles obtained in step viii) and/or step xii),wherein the gas temperature at the end of the ...

Absorbent resin composition and method for producing same

Provided is an absorbent resin composition which has both improved absorbency under load and improved liquid permeability between swollen gels, which is free from blocking or discoloration during storage, and which does not generate any odors. The present invention is an absorbent resin composition containing: a crosslinked polymer (A) including, as an essential structural units, a crosslinking agent (b) and a water-soluble vinyl monomer (a1) and/or a vinyl monomer (a2) which produces the water-soluble vinyl monomer (a1) through hydrolysis; and a cationic organic polymer (c) having a number average molecular weight of 1,000,000 or higher, or a cationic organic polymer (B) that has a cationic group and that is obtained through polymerization of a monomer composition including, as essential components, a cationic monomer having an amino group (am) and/or a cationic monomer having a salt of an amino group (am).

Method for Preparing Superabsorbent Polymer and Superabsorbent Polymer Prepared Thereby

The present invention relates to a method for preparing a superabsorbent polymer that progresses dry mixing of fine powders and a specific powder type of polymer binder when reassembling fine powders generated during the preparation process of a superabsorbent polymer, and thus obviates the necessity for a moisture drying process after reassembling fine powders, thereby reducing thermal losses, improving productivity, and obtaining a superabsorbent polymer having excellent basic absorption properties, and a superabsorbent polymer prepared by the method. 1. A method for preparing a superabsorbent polymer , comprising:conducting crosslinking polymerization of water soluble ethylenically unsaturated monomers having acid groups of which at least a part are neutralized, in the presence of an internal crosslinking agent, to form a hydrogel polymer comprising a first crosslinked polymer;gel grinding the hydrogel polymer to form a gel ground hydrogel polymer;drying the gel ground hydrogel polymer, and grinding and sieving the dried hydrogel polymer to form base polymer powders; andheat treating the base polymer powders to progress surface crosslinking, in the presence of a surface crosslinking agent,wherein the method further comprises:recovering fine powders, after sieving the dried hydrogel polymer;reassembling the fine powders in the presence of a powder type of polymer binder to provide reassembled fine powders; andmixing the reassembled fine powders with the hydrogel polymer before drying.2. The method for preparing a superabsorbent polymer according to claim 1 , wherein as the powder type of polymer binder comprises polyethylene oxide powders having a weight average molecular weight of 100 claim 1 ,000 to 600 claim 1 ,000 g/mol.3. The method for preparing a superabsorbent polymer according to claim 1 , wherein the fine powders have an average particle diameter less than 150 JIM and wherein providing the reassembled fine powders comprises dry mixing the fine powders ...

APPARATUS FOR PRODUCING WATER-ABSORBING RESIN PARTICLES

An apparatus for producing water-absorbing resin particles for which surface cross-linking treatment is conducted, the surface cross-linking treatment being conducted by spraying a surface cross-linking agent to a water-absorbing resin particle precursor and heating the agent and the precursor, the apparatus includes a treatment container in which the surface cross-linking treatment is conducted, a stirring device including a stirring member disposed in the treatment container, a heating device that heats an inside of the treatment container; and a spray nozzle disposed in the treatment container, the spray nozzle spraying into the treatment container the surface cross-linking agent supplied from a surface cross-linking agent supply source in an exterior of the treatment container through a supply pipe. In a flow path in the spray nozzle spanning from an entrance of the spray nozzle to a spray exit, a point whose opening cross-section is smallest in a flow path through which a fluid passes is the spray exit. A product with further stable physical properties can thereby be acquired. 1. A method for producing water-absorbing resin particles , the method comprising a surface cross-linking treatment being conducted by spraying a surface cross-linking agent to a water-absorbing resin particle precursor and heating the agent and the precursor , the water-absorbing resin particle precursor including unreacted monomers , whereinthe surface cross-linking treatment is conducted by an apparatus for producing water-absorbing resin particles, andthe apparatus includes:a treatment container in which the surface cross-linking treatment is conducted;a stirring device including a stirring member disposed in the treatment container;a heating device that heats an inside of the treatment container;a decompressing device that reduces a pressure in the treatment container; anda spray nozzle disposed in the treatment container, the spray nozzle spraying into the treatment container the ...

SUPER ABSORBENT POLYMER AND A PREPARATION METHOD THEREOF

The present invention relates to a super absorbent polymer (SAP) and a preparation method thereof. More specifically, the present invention provides a SAP satisfying the overall properties required to a SAP and especially the superior initial absorbency and absorbing rate under load at the same time, and a preparation method thereof, by treating the surface of the SAP with a surface treatment solution including water and a diol-based or glycol-based surface crosslinking agent. 1. A super absorbent polymer (SAP) , comprisinga base polymer powder comprising a crosslinked polymer of at least partially neutralized water-soluble ethylenic unsaturated monomer of acrylic acid; anda surface crosslinking layer formed on the base polymer powder,{'sub': 2', '8, 'wherein the surface crosslinking layer is obtained by crosslinking the surface of the base polymer powder with a C-Cdiol-based or glycol-based compound,'}wherein the SAP has the SPAN value of 1.2 or less, represented by the following Mathematical Formula 1,satisfies the absorbing rate under load (ARUL) represented by the following Mathematical Formula 2, and {'br': None, 'i': D', 'D', 'D, 'SPAN=[(90%)−(10%)]/(50%)≦1.2'}, 'wherein the base polymer powder comprises the powder having the diameter of 300 to 600 μm in an amount of 60 to 80 weight %, the powder having the diameter of 600 to 850 μm in an amount of 10 to 20 weight %, and the powder having the diameter of 150 to 300 μm in an amount of 10 to 20 weight %in Mathematical Formula 1,D(90%) is the diameter of the particle when the accumulated weight from the smallest particle becomes 90%, when the SAP particles are arranged in order of particle diameter measured according to EDANA method WSP 220.2,D(10%) is the diameter of the particle when the accumulated weight from the smallest particle becomes 10%, when the SAP particles are arranged in order of particle diameter measured according to EDANA method WSP 220.2, and {'br': None, '1.0>ARUL=AUP (10 min)/AUP(60 min)>0.70 ...

METHOD FOR FILLING PARTICULATE WATER ABSORBING AGENT AND METHOD FOR SAMPLING FILLED PARTICULATE WATER ABSORBING AGENT

An object of the invention is to provide a technique in which a decrease in physical properties is suppressed or consumer complaints are diminished. 2. The filling method according to claim 1 , wherein the acceleration is 10 G or less.3. The filling method according to claim 1 , wherein the vibrating step is carried out when W1/W2=10% by weight to 100% by weight where a ratio of a rilling amount W1 of the particulate water absorbing agent to a final filling amount W2 of the particulate water absorbing agent is expressed as W1/W2.4. The filling method according to claim 1 , wherein a vibration frequency at no load of the vibrating body is from 10 Hz to 90 Hz.5. The filling method according to claim 1 , wherein a relative humidity in a space portion within 30 cm from a particulate water absorbing agent surface is from 30% RH to 65% RH.6. The billing method according to claim 1 , wherein the pallet is a replaceable plate-like body having a mass of from 5 kg to 50 kg per 1 t of the particulate water absorbing agent.7. The filling method according to claim 1 , wherein the W2 is 20000 kg or less in Equation 1-1 above.8. The filling method according to claim 1 , wherein a temperature of the particulate water absorbing agent in the vibrating step is from 30° C. to 70° C.9. The filling method according to claim 1 , wherein the particulate water absorbing agent is constituted by containing a water absorbent resin claim 1 , the water absorbent resin having an irregular crushed shape.10. The filling method according to claim 1 , wherein a bulk specific gravity of the particulate water absorbing agent is from 0.50 (g/ml) to 0.70 (g/ml).11. The filling method according to claim 1 , wherein the particulate water absorbing agent is obtained by a production method including a step of belt polymerization.12. The filling method according to claim 1 , wherein a vibrational direction is adjusted by disposing a plurality of unbalanced mass-type vibration generators used for generation of ...

Novel Crosslinking Agent Compound and Superabsorbent Polymer Prepared by Using the Same

Provided are a novel crosslinking agent compound, and a superabsorbent polymer prepared by using the same. More particularly, provided are a crosslinking agent compound having a novel structure, which exhibits excellent crosslinking property and thermal degradability, and a superabsorbent polymer prepared by using the same.

Method for Production of Natural Super-Absorbent Materials

The present disclosure relates to a superabsorbent polymer gel derived from renewable and biodegradable materials such as carboxyalkyl cellulose (CAC). The CAC had a degree of substitution (DS) of 0.5 Подробнее

Method of Preparing Superabsorbent Polymer and Superabsorbent Polymer

Provided are a superabsorbent polymer and a preparation method thereof. More particularly, provided are a superabsorbent polymer including a fine powder reassembly, wherein the superabsorbent polymer exhibits excellent absorption performances and absorption rate, and does not cause deterioration of physical properties such as water retention capacity (CRC) or absorbency under pressure (AUP), and a preparation method thereof.

Absorbent article comprising a synthetic polymer derived from a renewable resource and methods of producing said article

An element of an absorbent article is provided. The element has a bio-based content of at least about 50% based on the total weight of the element, and comprises a synthetic polymer derived from a renewable resource via a first intermediate compound selected from the group consisting of crotonic acid, propiolactone, ethylene oxide, i-propanol, butanol, butyric acid, propionic acid, 2-acetoxypropanoic acid, methyl 2-acetoxypropanoate, methyl lactate, ethyl lactate, polyhydroxybutyrate, and a polyhydroxyalkanoate comprising 3-hydroxypropionate monomers. An absorbent article comprising the element and a method of making an element for an absorbent article also are provided.

LIME-BASED SORBENT FOR USE IN A FLUE GAS TREATMENT INSTALLATION AND PROCESS OF MANUFACTURING SAID LIME-BASED SORBENT

Lime-based sorbent suitable for use in a flue gas treatment process comprising at least 70 wt. % of Ca(OH)and at least 0.2 wt. % to at most 10 wt. % of a first additive selected among the group of hydrogels of natural or synthetic origin, in particular superabsorbent polymers (SAPs) or in the group of cellulose ethers or a combination thereof, premix for use in a manufacturing process of said sorbent, process for manufacturing the sorbent and use of said sorbent in a flue gas treatment process 1. Lime-based sorbent suitable for use in a flue gas treatment process comprising:{'sub': '2', 'at least 70 wt. % of Ca(OH)with respect to the total weight of said lime-based sorbent under a dry form after drying until constant weight at 150° C., and;'}at least 0.2 wt. % to at most 10 wt. % with respect to the total weight of said lime-based sorbent under a dry form after drying until constant weight at 150° C., of a first additive selected from the group consisting of hydrogels forming materials of natural or synthetic origin, namely, superabsorbent polymers (SAPS) or in the group of cellulose ethers or a combination thereof.2. Lime-based sorbent according to claim 1 , wherein the said first additive is selected from the group consisting of:the group of hydrogels forming materials of synthetic origin including polyacrylates, polyacrylic acids, crosslinked polyacrylates and polyacrylic acids, or crosslinked acrylamide and acrylate copolymers, namely those partially neutralized with sodium and/or potassium, or the group of hydrogels forming materials of natural origin including guar gum, alginates, dextran or xanthane gum or a combination thereof and/or;the group of cellulose ethers, including hydroxyalkyl or carboxyalkyl cellulose ethers, namely carboxymethyl cellulose or hydroxyethyl methyl cellulose (HEMC).3. Lime-based sorbent according to claim 1 , wherein the said superabsorbent polymer is selected from the group consisting of crosslinked polymers of acrylic or ...

Particulate water absorbent and method for producing same

Disclosed is a particulate water absorbent for an absorbent material, which is mainly composed of a polyacrylic acid (salt) water absorbent resin and exhibits excellent water absorption performance, while having excellent performance of preventing coloring over time. The particulate water absorbent has no odor and is suitable for practical use. Also disclosed is a method for producing a particulate water absorbent mainly composed of a polyacrylic acid (salt) water absorbent resin, which comprises: a step of polymerizing an aqueous monomer solution that is mainly composed of an acrylic acid (salt) that contains 10-200 ppm of a methoxyphenol; a step of drying a hydrated gel-like crosslinked polymer that is obtained by the polymerization; and a surface crosslinking step. The method for producing a particulate water absorbent is characterized by comprising a step of adding a chelating agent and an inorganic reducing agent and by satisfying the following condition (a) and/or (b). (a) The method comprises a step of adding water-insoluble inorganic fine particles. (b) In the drying step and the surface crosslinking step, the moisture content of the polymer is controlled to 3-15% by weight.

Method for the concentration and purification of biological compounds

The invention concerns materials and methods used for the concentration, desalination, purification or stabilization of biological compounds, in particular biological macromolecules and supramolecular structures, by means of superabsorbent polymers or superabsorptive composite materials.

Process for preparing superabsorbent-containing composites

Superabsorbent-containing composites prepared in a fluidized bed coating apparatus according to the process of the present invention contain at least one particle of a superabsorbent material covered with at least a first layer of at least one particle of at least one coating material. The superabsorbent-containing composites prepared in a fluidized bed coating apparatus according to the process of the present invention are particularly suitable for use in sanitary napkins, diapers and other disposable absorbent articles that handle complex fluids.

Absorbent cores comprising a superabsorbent polymer immobilizing material

Described herein is an absorbent article having an absorbent core. The absorbent core includes a superabsorbent polymer material and a superabsorbent polymer immobilizing material. The superabsorbent polymer immobilizing material includes from about 20% to about 70% of a first polymer and from about 30% to about 80% of a second polymer. The superabsorbent polymer immobilizing material has a Shear Viscosity at 10 (1/s) at 230 °C of from about 300 mPa·s to about 10,000 mPa·s.

SUPER SEAMABLE POLYMERS AND METHOD FOR THEIR PRODUCTION

Process for producing particulate water-absorbing resin

Particulate superabsorbent polymer composition having improved stability

The present invention relates to a particulate superabsorbent polymer composition comprising a polymer comprising a neutralized aluminum salt solution applied to the surface of a particulate superabsorbent polymer; wherein an aqueous solution of the neutralized aluminum salt has a pH value from about 5.5 to about 8 and the particulate superabsorbent polymer composition has a mean particle size distribution of from 300 to 400 μm, an original Free Swell Gel Bed Permeability (FSGBP) of about 20×10 −8 cm 2 to about 200×10 −8 cm 2 ; and subsequent to subjecting the particulate superabsorbent polymer composition to the Processing Test, the particulate superabsorbent polymer composition has a permeability stability index of from about 0.60 to about 0.99 and having particles having a particle diameter of larger than 600 μm in an amount of less than about 15 wt % of the particulate superabsorbent polymer composition and as specified by standard sieve classification.

Particulate superabsorbent polymer composition having improved stability

The present invention relates to a particulate superabsorbent polymer composition having improved stability comprising a polymer comprising from about 0.01 wt % to about 5 wt % of a neutralized aluminum salt solution applied to the surface of a particulate superabsorbent polymer; wherein an aqueous solution of the neutralized aluminum salt has a pH value from about 5.5 to about 8 and the particulate superabsorbent polymer composition has an original Free Swell Gel Bed Permeability (FSGBP) of about 20×10 −8 cm 2 to about 200×10 −8 cm 2 and a compressibility of from about 1.30 mm 2 /N to about 4 mm 2 /N prior to subjecting the particulate superabsorbent polymer composition to a Processing Test; and subsequent to subjecting the particulate superabsorbent polymer composition to the Processing Test, the particulate superabsorbent polymer composition has a permeability stability index of from about 0.60 to about 0.99.

Process for producing aqueous-liquid-absorbing resin particles, aqueous-liquid-absorbing resin particles, absorbent, and absorbent article

Provided is a process for producing aqueous-liquid-absorbing resin particles which, even after transportation or a diaper production step, are capable of combining the property of enabling liquid passing through interstices among the swollen gel particles with absorption performance under load. The present invention is: a process for producing aqueous-liquid-absorbing resin particles (P), characterized by subjecting resin particles (B) that comprise a crosslinked polymer (A) comprising essential constituent units derived from a water-soluble vinyl monomer (a1) and/or a vinyl monomer (a2) which becomes a water-soluble vinyl monomer (a1) upon hydrolysis and from a crosslinking agent (b), to a surface treatment by a specific method using a C 4 or lower polyhydric alcohol (c), a polyvalent-metal salt (d), and a polyvalent glycidyl compound (e); and the aqueous-liquid-absorbing resin particles (P).

Absorbent resin composition and method for producing same

Provided is an absorbent resin composition which has both improved absorbency under load and improved liquid permeability between swollen gels, which is free from blocking or discoloration during storage, and which does not generate any odors. The present invention is an absorbent resin composition containing: a crosslinked polymer (A) including, as an essential structural unit, a crosslinking agent (b) and a water-soluble vinyl monomer (a1) and/or a vinyl monomer (a2) which produces the water-soluble vinyl monomer (a1) through hydrolysis; and a cationic organic polymer (c) having a number average molecular weight of 1,000,000 or higher; or a cationic organic polymer (B) that has a cationic group and that is obtained through polymerization of a monomer composition including, as essential components, a cationic monomer having an amino group (am) and/or a cationic monomer having a salt of the amino group (am).

制备超吸收剂的方法

一种通过使单体溶液或悬浮液聚合来制备超吸收剂颗粒的方法，所述方法包含：将所得的水性聚合物凝胶在循环空气带式干燥机中干燥，研磨、分级以及任选地进行热表面后交联，其中水性聚合物凝胶通过振荡式输送带被引入循环空气带式干燥机中，通过至少一个脱除装置将附着的聚合物凝胶从回转的输送带的底面上清除，并且向回转的输送带的底面上喷洒水。

고흡수성 수지의 제조 방법

본 발명에 따른 고흡수성 수지는, 초기 흡수 특성이 우수하여, 기저귀 등 위생재에 사용되어 우수한 성능을 발현할 수 있다.

Claylinked polymer gels in new physical forms, methods for their formation and uses thereof

본 발명은 가소제와 하전된 클레이결합된 겔(A)을 포함하며, 상기 하전된 클레이결합된 겔(A)은 하전된 폴리머(A')에 의해 가교결합되어, 어떤 특정한 클레이 나노입자가 상기 하전된 폴리머(A')에 의해 적어도 하나의 다른 클레이 나노입자에 결합되어 있도록 한 클레이 나노입자(C)를 포함하는 섬유, 필름 또는 발포체를 제공한다. 섬유, 필름 및 발포제의 제조방법 또한 제공된다. The present invention comprises a gel (A) with a charged clay bonded with a plasticizer, wherein the charged clay-bonded gel (A) is crosslinked by a charged polymer (A '), Film or foam comprising the clay nanoparticles (C) so as to be bound to at least one other clay nanoparticle by the polymer (A '). Methods of making fibers, films, and blowing agents are also provided.

具有改进稳定性的颗粒超吸收聚合物组合物

本发明涉及颗粒超吸收聚合物组合物，其包含含有施涂于颗粒超吸收聚合物表面上的中和铝盐溶液的聚合物；其中中和铝盐的水溶液具有约5.5至约8的pH值，且颗粒超吸收聚合物组合物具有300‑400μm的平均粒度分布，约20×10 ‑8 cm 2 至约200×10 ‑8 cm 2 的初始自由溶胀凝胶床渗透率；并且在使颗粒超吸收聚合物组合物经受加工试验以后，颗粒超吸收聚合物组合物具有约0.60至约0.99的渗透稳定性指数且具有颗粒超吸收聚合物组合物的小于约15重量％的量且如通过标准筛分级指定的粒径大于600μm的颗粒。

Method for manufacturing high absorber

Super absorbent polymer

The present invention relates to a super absorbent polymer comprising: base resin powder comprising a first cross-linking polymer of a water-soluble ethylene unsaturated monomer having an acid group of which at least part is neutralized; and a surface cross-linking layer formed on the base resin powder and comprising a second cross-linking polymer in which the first cross-linking polymer is additionally cross-linked through a surface cross-linking agent. The super absorbent resin has excellent absorption scale factors, absorption speed and flowage and has excellent various psychical properties required for the super absorbent resin, thereby being used for hygienic materials such as diaper or the like, specially a ultra-thin hygienic material.

수성 액체 및 혈액을 흡수하는 분말형 가교 중합체,이것의 제조 방법 및 용도

본 발명은 흡수할 수 있고, 산성 기를 소지한 부분 중화된 모노에틸렌계 불포화 단량체를 주성분으로 한 가교 중합체에 관한 것으로서, 이 중합체는 특히 팽윤 상태에서 액체를 운반하는 능력에 대한 특성이 개선되었으며, 수성 용액 형태로 제공되는, 추후의 가교제 화합물로서 사용되는 폴리올과 양이온으로 이루어진 조합물로 ≥150℃ 온도로 그 표면에서 가교된다.