СПОСОБ ПОЛУЧЕНИЯ ПОРОШКООБРАЗНОЙ ВОДОПОГЛОЩАЮЩЕЙ СМОЛЫ

Изобретение относится к способу получения порошкообразной водопоглощающей смолы, применяемой в поглощающих или гигиенических изделиях. На первой стадии способа проводят радикальную полимеризацию основного мономерного компонента, содержащего акриловую кислоту и/или ее соль, другого мономера в количестве от 0 до 30 мол.%, внутреннего сшивающего агента в количестве от 0,001 до 2 мол.% в присутствии инициатора в количестве от 0,001 до 2 мол.%. На второй стадии полученный гидрогелевый полимер сушат и измельчают с получением порошка водопоглощающей смолы, имеющего степень нейтрализации от 50 до 90 мол.%, средневзвешенный диаметр частиц от 300 до 600 мкм и частицы диаметром менее 150 мкм в количестве от 0 до 10 мас.%. На третьей стадии к порошку водопоглощающей смолы, имеющему температуру от 40 до 80°С, добавляют сшивающий агент, обрабатывающий поверхность, который включает агент сшивания поверхности, воду, гидрофильный органический растворитель в количестве от 0 до 10 мас.%. На четвертой стадии ...

ВОДОПОГЛОЩАЮЩИЙ АГЕНТ В ВИДЕ ЧАСТИЦ НЕПРАВИЛЬНОЙ ФОРМЫ ПОСЛЕ ИЗМЕЛЬЧЕНИЯ

Изобретение относится к получению водопоглощающего агента в виде частиц для поглощающего субстрата тонкого типа. Водопоглощающий агент в виде частиц неправильной формы после измельчения включает поверхностно-сшитую водопоглощающую смолу, полученную путем полимеризации с образованием поперечных связей ненасыщенного мономера, содержащего акриловую кислоту и/или ее соль. Агент содержит агломерированные частицы и обладает способностью удержания жидкости после центробежной обработки (CRC) в физиологическом солевом растворе, составляющей не менее 32 г/г. Его среднемассовый размер частиц (D50) находится в диапазоне от 200 до 400 мкм. Частицы диаметром менее 600 мкм и не менее 150 мкм составляют от 95 до 100 мас.%. При использовании данного водопоглощающего агента в виде частиц можно получить такие поглощающие изделия, которые имеют мало неровных поверхностей после поглощения воды и обладают превосходными свойствами проникновения жидкости. 3 н. и 19 з.п. ф-лы, 1 ил., 9 табл.

ГИДРОФИЛЬНЫЕ ГЕЛИ ИЗ ФОТОИНИЦИАТОРОВ НА ОСНОВЕ ПОЛИАЛКИЛОВЫХ ЭФИРОВ

Изобретение касается способа получения катетера, включающего гидрофильный гель. Способ включает этапы объединения полимерного фотоинициатора общей формулы R(A)-(R(A)-O)-(R(A)-O)-R(A)с одним или несколькими гелеобразующими полимерами и/или гелеобразующими мономерами с образованием матричной композиции. При этом Rпредставляет собой -CHCH-, у которого один или несколько атомов Н могут быть заменены на А, Rпредставляет собой -СНСН-, у которого один или несколько атомов Н могут быть заменены на А, Rпредставляет собой ОН, Rпредставляет собой Н, каждый из о и р является действительным числом от 0 до 5000, при условии, что о+р>0 и о имеет значение не меньше 1, а m=1 и n=0, каждый из r и s является 0. A, А, Аи Аявляются бензофеноновыми фотоинициаторными фрагментами, присоединеными к R, R, Rи Rсоответственно через спейсерную группу, выбранную из простой алкиленэфирной группы. Затем матричную композицию отверждают УФ-излучением, воздействуют средой, вызывающей разбухание и вводят в катетер. Технический ...

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 ...

ВОДОРАСТВОРИМАЯ ПЛЕНКА ИЗ ПОЛИВИНИЛСПИРТОВОЙ СМЕСИ, РОДСТВЕННЫЕ СПОСОБЫ И РОДСТВЕННЫЕ ИЗДЕЛИЯ

Изобретение относится к водорастворимым пленкам, которые могут быть использованы для приведения в контакт с жидкостями, твердыми веществами или их комбинациями и к изделиям, содержащим данную пленку. Пленка содержит: смесь поливинилспиртовой (PVOH) смолы, которая включает первый сополимер PVOH, содержащий первое анионное мономерное звено, при этом первый сополимер PVOH имеет первый коэффициент включения (a) первого анионного мономерного звена; и второй сополимер PVOH, содержащий второе анионное мономерное звено. Причем второй сополимер PVOH имеет второй коэффициент включения (a) второго анионного мономерного звена, при этом разность a- aсоставляет от 0,5 до 10 мол.% и первое анионное мономерное звено и второе анионное мономерное звено являются одинаковыми или различными. Технический результат заключается в получении водорастворимой пленки с улучшенной растворимостью в воде, а также улучшенными свойствами прочности на растяжение и/или модуля при растяжении. 4 н. и 40 з.п. ф-лы, 3 ил., 17 ...

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 ...

ПОРОШКООБРАЗНЫЕ СШИТЫЕ ПОЛИМЕРЫ, АБСОРБИРУЮЩИЕ ПОД НАГРУЗКОЙ ВОДНЫЕ ЖИДКОСТИ, А ТАКЖЕ КРОВЬ, СПОСОБ ПОЛУЧЕНИЯ ТАКИХ ПОЛИМЕРОВ И ТЕКСТИЛЬНЫЕ КОНСТРУКЦИИ ДЛЯ ГИГИЕНЫ ТЕЛА

Порошкообразный сшитый абсорбирующий водные жидкости, а также кровь полимер(суперабсорбер), образованный из: а) 55,0-99,9 мас.% полимеризованных ненасыщенных способных к полимеризации, содержащих кислотные группы мономеров, которые по меньшей мере на 25 мол.% нейтрализованы; б) 0-40 мас.% полимеризованных ненасыщенных способных к сополимеризации с а) мономеров; в) 0,1-5,0 мас.% агента сшивки; г) 0-30 мас.% водорастворимого полимера, причем массовые количества а)-г) рассчитаны на безводный полимер, характеризуется тем, что 100 частей вышеописанного полимера, взятого в виде частиц, смешивают с водным раствором самое большее на 10 частей по меньшей мере 10%-ной фосфорной кислоты и а) 0,05-0,3 частей соединения, которое может реагировать по меньшей мере с двумя карбоксильными группами и не содержит никакой образующей щелочную соль группы в молекуле; и/или б) 0,05-1 части соединения, которое может реагировать по меньшей мере с двумя карбоксильными группами и содержит одну образующую щелочную ...

СПОСОБ ПОЛУЧЕНИЯ ПОЛИМЕРА С ФУНКЦИОНАЛЬНЫМИ ГРУППАМИ, СПОСОБНЫМИ СШИВАТЬ УКАЗАННЫЙ ПОЛИМЕР

Использование: синтез полимера для ускорения флокуляции, загущения дисперсий суспендированных твердых веществ. Сущность изобретения: смешивание водного раствора, по крайней мере, одного мономера, способного образовать водорастворимый полимер, по крайней мере, одного химического реагента, содержащего функциональные группы, маслянного раствора, с получением обратной эмульсии или микроэмульсии. Последующая обработка полученной эмульсии в условиях полимеризации мономеров и взаимодействие с химическим реагентом, содержащим функциональную группу, с получнием эмульсии водорастворимого полимера, содержащего функциональные группы, имеющего мицеллы диаметром . 6 з. п. ф-лы, 3 табл.

РАСТВОРИМЫЕ В ВОДЕ ПОРОШКООБРАЗНЫЕ ПОЛИМЕРЫ, ОБЛАДАЮЩИЕ УЛУЧШЕННОЙ ДИСПЕРГИРУЕМОСТЬЮ

... 1. Сухая порошкообразная композиция, содержащая растворимые в воде порошкообразные полимеры и компонент, где компонент выбран из группы, состоящей из поли(метилвинилового эфира-альт-малеиновой кислоты), сополимера поли(метилвинилового эфира-альт-сложного эфира малеиновой кислоты), поли(метилвинилового эфира-альт-малеинового ангидрида), сополимера поли(метилвинилового эфира-альт-сложного эфира малеинового ангидрида), поли(стирола-со-малеиновой кислоты), сополимера поли(стирола-со-сложного эфира малеиновой кислоты), поли(стирола-со-малеинового ангидрида), сополимера поли(стирола-со-сложного эфира малеинового ангидрида) и их комбинации.2. Сухая порошкообразная композиция по п. 1, где компонент смешивают с растворимыми в воде порошкообразными полимерами.3. Сухая порошкообразная композиция по п. 1, где компонент наносят на растворимые в воде порошкообразные полимеры.4. Сухая порошкообразная композиция по п. 1, в которой растворимыми в воде порошкообразными полимерами являются полиакриламиды, ...

ВОДОПОГЛОЩАЮЩИЙ АГЕНТ В ВИДЕ ЧАСТИЦ НЕПРАВИЛЬНОЙ ФОРМЫ ПОСЛЕ ИЗМЕЛЬЧЕНИЯ

... 1. Водопоглощающий агент в виде частиц неправильной формы после измельчения, причем этот водопоглощающий агент в виде частиц включает поверхностно-сшитую водопоглощающую смолу, полученную путем полимеризации с образованием поперечных связей ненасыщенного мономера, содержащего кислотную группу и/или ее соли, причем указанный водопоглощающий агент удовлетворяет следующим требованиям (i)-(iii): (i) способность удержания жидкости после центробежной обработки (CRC) водопоглощающего агента в физиологическом солевом растворе составляет не менее 32 г/г; (ii) среднемассовый размер частиц (D50) водопоглощающего агента находится в диапазоне от 200 до 400 мкм; (iii) частицы водопоглощающего агента, имеющие диаметр менее 600 мкм и не менее 150 мкм, составляют от 95 до 100 мас.%. 2. Водопоглощающий агент в виде частиц неправильной формы после измельчения по п.1, где содержание воды в водопоглощающем агенте в виде частиц составляет от 1 до 10 мас.%. 3. Водопоглощающий агент в виде частиц неправильной ...

ВОДОРАСТВОРИМАЯ ПЛЕНКА ИЗ ПОЛИВИНИЛОВОГО СПИРТА СО СМЕСЬЮ ПЛАСТИФИКАТОРОВ, РОДСТВЕННЫЕ СПОСОБЫ И РОДСТВЕННЫЕ ИЗДЕЛИЯ

ГИДРОФИЛЬНЫЕ ГЕЛИ, ПОЛУЧЕННЫЕ ИЗ ПРИВИТЫХ ФОТОИНИЦИАТОРОВ

... 1. Способ получения гидрофильного геля, где указанный способ включает этапы:a. обеспечения матричной композиции, включающей полимерный фотоинициатор общей формулы I:Полимер-[CR-CHR-спейсер(PI)](I),где m представляет собой целое число от 1 до 5000;n представляет собой действительное число больше 0 и меньше 5; иPI представляет собой фотоинициаторный фрагмент;и где каждая группа R представляет собой заместитель, независимо выбранный из водорода, C1-C25 линейного алкила, C3-C25 разветвленного алкила, C3-C25 циклоалкила, арила, гетероарила, -OH, -CN, галогенов, аминов (например, -NR'R'', где R' и R'' представляют собой алкильные группы, преимущественно C1-C25 алкильные группы) и амидов (например, -CONR'R'' или R'CONR''-, где R' и R'' представляют собой алкильные группы, преимущественно C1-C25 алкильные группы),b. отверждения матричной композиции, полученной на этапе a., путем воздействия на нее УФ-излучением,c. воздействия на матричную композицию средой, вызывающей разбухание, таким образом ...

СПОСОБ ПОЛУЧЕНИЯ НИЗКОВЯЗКОЙ ВОДНОЙ ДИСПЕРСИИ НА ОСНОВЕ ВОДОРАСТВОРИМОГО ПОЛИМЕРА

Объектом изобретения является способ получения низковязкой полимерной дисперсии на основе водорастворимого полимера путем полимеризации по меньшей мере одного водорастворимого мономера и по меньшей мере одного гидрофобного мономера в присутствии по меньшей мере одного полимерного диспергатора и последующей обработки получаемой полимерной дисперсии, при этом обработку получаемой водной дисперсии осуществляют путем удаления воды с последующим смешиванием получаемой концентрированной дисперсии с водной дисперсией по меньшей мере одного полимерного диспергатора.

ВОДОДИСПЕРГИРУЕМАЯ ПОРОШКООБРАЗНАЯ ПОЛИМЕРНАЯ КОМПОЗИЦИЯ, СПОСОБ УЛУЧШЕНИЯ ВОДОДИСПЕРГИРУЕМОСТИ ПОЛИМЕРОВ, СПОСОБ ДИСПЕРГИРОВАНИЯ ПОЛИМЕРА

Изобретение включает в себя вододиспергируемую порошкообразную полимерную композицию, содержащую водорастворимый порошкообразный полимер, который контактирует с тонкоизмельченным порошкообразным диспергатором, содержащим по крайней мере одну нерастворимую или недостаточно растворимую жирную кислоту или ее соль, так что частицы водорастворимого порошкообразного полимера диспергируются на указанном тонкоизмельченном порошкообразном диспергаторе, способ получения указанной водорастворимой порошкообразной полимерной композиции и ее применение в загущающихся водных жидкостях.

VERFAHREN ZUR HERSTELLUNG VON TEILCHEN AUS EINEM HARZ MIT EINEM HOHEN WASSERABSORPTIONSVERMOEGEN

VERNETZTE HYDROGELE UND VERFAHREN ZU DEREN HERSTELLUNG

Verfahren zur Agglomerierung wasserquellbarer Polymere durch Sintergranulation.

WAESSRIGE POLYMERDISPERSIONEN.

Verfahren zur Herstellung absorbierender Polymere

Verfahren zur Herstellung absorbierender Polymere

PULVERFÖRMIGE, VERNETZTE, WÄSSRIGE FLÜSSIGKEITEN SOWIE BLUT ABSORBIERENDE POLYMERE, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG ALS ABSORPTIONSMITTEL IN HYGIENEARTIKELN

POLYMERZUSAMMENSETZUNGEN.

VERFAHREN ZUR KOERNUNG EINES WASSER ABSORBIERENDEN HARZES.

Flüssige Polymer/Fettsäure-Suspension.

SPRÜHGETROCKNETE POLYMERAGGLOMERATE UND DEREN ANWENDUNGSVERFAHREN

VERKLEBUNGSGEGENSTAND MIT VERBESSERTER REVERSIBILITÄT

VERFAHREN ZUR NACHVERNETZUNG VON HYDROGELEN MIT BICYCLISCHEN AMIDACETALEN

Verfahren zur Herstellung von Wasser oder wässrige Flüssigkeiten absorbierende Polymeren in Form von aggregierten Partikeln

Verfahren und Vorrichtung zur Plasmabehandlung von Werkstücken

Das Verfahren und die Vorrichtung dienen zur Plasmabehandlung von Werkstücken. Das Werkstück wird in eine zumindest teilweise evakuierbare Kammer einer Behandlungsstation eingesetzt und zur Unterstützung einer Handhabung der Werkstücke wird mindestens ein Teil der Behandlungsstation relativ zu einem weiteren Teil bewegt. Die Bewegung wird derart durchgeführt, daß eine hülsenförmige Kammerwandung relativ zu einem Kammerboden sowie relativ zu einem Kammerdeckel positioniert wird.

Ion-trigger polymer coatings on water-sensitive polymer films

The present invention provides a composition comprising an ion-trigger polymer coating joined to a water-sensitive substrate. When the composition is employed as a diaper outercover or a pantiliner baffle, for example, the ion-trigger coating is oriented toward the body and is exposed to bodily fluids. The coating inhibits the transport of the fluids to the inner, body-side water-sensitive substrate, maintaining the structural integrity of the composition. When the entire article is disposed of in a large volume of water, such as in the hydraulic flow of a toilet, both the water-sensitive substrate layer and the ion-trigger polymer coating layer mechanically weaken and break apart into small pieces.

Flushable release liners and methods of making the same

Flushable release liners and methods of making the same

The present invention is directed to a flushable water-sensitive film, which maintains its integrity and strength when in use, but disperses when placed in contact with water, such as in a conventional sink or toilet. Moreover, the present invention is directed to a flushable release liner, which performs like conventional release papers, but adds the convenience of disposal by flushing in a sink or toilet. The present invention is also directed to products, which contain a flushable water-sensitive film or release liner.

Non-aqueous slurris of water soluble polymers

Mixtures of cationic polymers as flocculants

A polymer blend comprises a mixture of [i] a water soluble cationic structured [eg cross-linked] first polymer having a MW of at least 1 x 106 and [ii] a water soluble cationic second polymer having a MW of at least 1 x 106, the second polymer being linear or having a lower degree of structure than the first polymer, the blend having a sedimentation value of <10% when measured in 0.001 M NaCI and a sedimentation value of 10% or more when measured in 1 M NaCI. The blend is used for flocculation of waste activated sludge when the polymers can be added together or sequentially to the sludge, whereafter it is dewatered. The blend is preferably in the form of a water-in-oil emulsion. which can be prepared by mixing separate water-in-oil emulsions of the two polymers. Preferred polymers are for example acrylamide/quaternised dimethyl aminoethyl acrylate copolymers. The structured nature of the first polymer may be introduced by including for example N,N'-methylenebisacrylamide ...

PROCESS FOR PREPARING PARTICLES OF HIGH WATER-ABSORBENT RESIN

Process for producing highly water absorptive polymer

A highly water absorbent polymer having high resistance to salt solution is prepared by crosslinking a hyrophilic polymer or copolymer having carboxyl and/or carboxylate groups and water content of 10 to 40 wt. % with a crosslinking agent having at least two functional groups capable of reaction with said carboxyl and carboxylate group. An improved hydrophilic polymer is produced by polymerizing a monomer with a persulfate and a hydroperoxide as combined initiators. Another improved hydrophilic polymer is prepared by polymerizing a monomer with a persulfate and adding a hydroperoxide to the resulting polymer.

The preparation of super absorbent polymers

THICKENING NON AQUEOUS LIQUIDS

Thermoplastic injection molded and flushable material

A water-dispersible injection-moldable composition includes partially-hydrolyzed polyvinyl alcohol (PVOH), polyethylene glycol (PEG), plasticizer, and a hydrophobic polymeric component, wherein the composition has a melt flow index of 5-180. The hydrophobic polymeric component can be a colorant within an ethylene matrix or polyethylene. The composition is flushable according to Guidance Document for Assessing the Flushability of Nonwoven Consumer Products (INDA and EDANA, 2006); Test FG 522.2 Tier 2 - Slosh Box Disintegration Test. The PVOH has a hydrolysis of 87% to 89%.

Flocculant compositions containing silicon-containing polymers

Flocculant compositions containing silicon-containing polymers

Water-in-oil emulsion spray drying process

Spray-drying oil recovery process

Spray-dried polymer compositions and methods

DEVICE FOR CVD COATINGS

FOAM MATERIALS FROM WATER-ABSORBING BASIC POLYMERS, PROCEDURES FOR YOUR PRODUCTION AND YOUR USE

PROCEDURE FOR NACHVERNETZUNG OF HYDRAULIC GELS WITH BICYCLI AMIDS ACETAL

ABSORBENT ARTICLE WITH A COATED MATERIAL SOURCECASH IN WATER

PROCEDURE FOR THE CLEANING AND DRYING PROCESS OF POLYMER HYDRAULIC GELS

PROCEDURE FOR THE DECREASE OF THE REMAINDER MONOMER CONTENT AND IMPROVEMENT OF THE WET-STRENGTH OF ARTICLES FROM WATER-ABSORBING SCHAUMFÖRMIGEN INTERLACED POLYMERS AND USE OF IT

AQUEOUS DISPERSION, MANUFACTURING PROCESS FOR IT AND USE OF IT

WATER-CONTAINING PROPELLANT PREPARATION, PROCEDURE FOR THEIR PRODUCTION AND COSMETIC PREPARATION THIS CONTAINING

PROCEDURE FOR THE PRODUCTION OF A WATER-SOURCECASH MATERIAL WITH COATED WATER-SOURCECASH POLYMERS

FROM CLAY/TONE AND SUPER+ABSORBING POLYMERS EXISTING GRAINS.

EMULSIFIED FUNKTIONALISIERTE POLYMERS

SUPER+ABSORBENT POLYMERS AND PROCEDURES FOR YOUR PRODUCTION

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

PROCEDURE FOR THE PRODUCTION OF STABLE, LAGERFAHIGER, NICHTWASSERIGER POLYMER DISPERSIONS

POWDERED LIQUIDS AS WELL AS BLOOD ABSORBING POLYMERS, PROCEDURES FOR YOUR PRODUCTION, AQUEOUS UNDER LOAD, AND YOUR USE IN TEXTILEN CONSTRUCTIONS FOR THE BODY HYGIENE

OIL RE-REFINING PROCEDURE FROM A SPRAY DRYING PROCEDURE

CARRIER WITH HIGH-ABSORBING MATERIAL, PROCEDURE FOR ITS PRODUCTION AND ITS USE

PULVEROUS, INTERLACED ONES, AQUEOUS LIQUIDS AS WELL AS BLOOD ABSORBING POLYMERS

COMPOSITION ON THE BASIS OF MICRO-CRYSTALLINE CELLULOSE FOR THE PRODUCTION OF SPHERICAL PARTICLES

PROCEDURE FOR THE PRODUCTION OF WATER OR AQUEOUS LIQUIDS ABSORBING POLYMERS IN THE FORM OF AGREED PARTICLES

Spray drift reduction

Spray drift reductants for agrochemical formulations for use in spray drift reduction in agrochemical formulations which contain actives and/or micronutrients. The reductants are selected from alkoxylated polyol or polyamine which is optionally acyl terminated, and the formulation may optionally comprise non-ionic alkoxylate. There is also provided a method of making the formulation, and the use of the formulation in reducing spray drift on application of the agrochemical formulation to vegetation.

INTIMATE WATER SOLUBLE OR WATER SWELLABLE BLEND OF MICROBIAL POLLYSACCHARIDE AND SYNTHETIC POLYMER

ADDITIVE FOR WATER FOR FIRE FIGHTING

ABSORBENT POLYMERS AND THEIR PRODUCTION

An absorbent member comprising a water absorbing agent

METHODS FOR THE FORMATION OF HYDROGELS USING THIOSULFONATE COMPOSITIONS AND USES THEREOF

TREATMENT OF ABSORBENT SANITARY PAPER PRODUCTS

POLYMERIC COMPOSITIONS AND THEIR PRODUCTION AND USES

Overcoated water-soluble films

A multilayer film comprising: (a) a layer of a first polymer comprising polymerized units of vinyl alcohol; and (b) a layer of a second polymer selected from the group consisting of maleic anhydride-isobutylene copolymers, neutralized maleic anhydride-isobutylene copolymers, chemically modified maleic anhydride-isobutylene copolymers, ethylene -acrylic acid copolymer, neutralized ethylene -acrylic acid copolymer, polyvinylpyrrolidone, poly (vinyl methyl ether), cellulose, methyl cellulose, hydroxyethyl cellulose, poly(methyl)acrylic acid, poly(ethylene glycol), polyacrylamine, poly(2-hydroxyethyl acrylate), and mixtures thereof.

A hydrogel composition and methods of making it

Low protein percentage gelling compositions

Described herein are low protein concentration gelling compositions comprising keratin proteins WO 2013/025941 PCT/US2012/051215 4I x 0) U0 m4 Will, 4' bCC ...

Water-in-oil emulsion spray drying process

Incorporation of adsorbents during extraction and/or hydration of hydrogel materials

STABILITY OF WATER-IN-OIL EMULSIONS UTILIZING MINOR AMOUNTS OF OIL-SOLUBLE POLYMERS AND METHOD

HYDROGEL-FORMING POLYMER MIXTURE

The invention relates to a hydrogel-forming polymer mixture containing a) a hydrogel-forming polymer I with acid rests and b) a hydrogel-forming polymer II with amino and/or imino rests. The ratio of acid rests to the sum of amino/imino rests is between 1: 9 and 9: 1. The invention also relates to the use of said mixture in absorbent hygiene articles.

PULVERULENT, CROSS-LINKED POLYMERS, CAPABLE OF ABSORBING AQUEOUS LIQUIDS AND BLOOD

The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomers carrying acid groups, and have improved properties, in particular in respect of cheir capacity for transportation of liquids in the swollen state, and which have been after-crosslinked on their surface at temperatures of >150.degree.C with a combination of polyol as after-crosslinking compound and a cation in the form of an aqueous solution.

MACROMONOMER MIXTURE, TERMINAL-REACTIVE POLYMER MIXTURE, INTERMEDIATE FOR MACROMONOMER AND SILICONE HYDROGEL

To obtain a hydrophilic macromonomer mixture which is a highly polymerized hydrophilic macromonomer, has few components not bonded to the polymer chain after polymerization, and is less likely to leaching. Provided is a macromonomer mixture containing macromonomer A being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a polymerization initiator at an end thereof; and macromonomer B being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a chain transfer agent at an end thereof.

STABLE WATER-IN-OIL EMULSIONS

This invention relates to a stable water-in-oil emulsion which contains a water soluble vinyl addition of polymers or copolymers. One or more water soluble water-in-oil emulsifying agents containing a surfactant and system which comprises a mixture of one or more hydrophillic surfactants.

STABLE SUSPENSIONS OF HYDROSOLUBLE POLYMERS, AND THEIR PREPARATION

L'invention concerne une suspension stable de polymère hydrosoluble en milieu substantiellement hydrocarboné comprenant au moins un milieu hydrocarboné liquide aliphatique ou aromatique non-solvant du polymère hydrosoluble, au moins un agent épaississant (b) choisi parmi les sels alcalins des acides gras supérieurs, en une proportion de 0,1 à 5 parties en poids pour 100 parties en poids dudit milieu hydrocarboné liquide, des particules solides de polymère hydrosoluble (a) en une proportion de 40 à 150 parties en poids pour 100 parties en poids dudit milieu hydrocarboné liquide et caractérisée en ce qu'elle comprend en outre au moins un constituant choisi parmi l'eau, en une proportion de 0,1 à 10 parties en poids pour 100 parties en poids dudit polymère hydrosoluble et les monoalcools aliphatiques de 1 à 4 atomes de carbone et les diols aliphatiques de 2 à 6 atomes de carbone, ces derniers en une proportion de 0,1 à 50 parties en poids pour 100 parties en poids dudit polymère hydrosoluble ...

STABLE CONCENTRATED AND HYDROUS POLYMER DISPERSIONS

Polymeric Compositions A polymer of an ethylenically unsaturated monomer containing a pendant hydrophobic group and, optionally, other monomers such as (meth) acrylic acid, ethyl acrylate or acrylamide is provided as a stable, substantially anhydrous dispersion containing at least 40% by weight of the polymer in a continuous phase of a non-aqueous liquid. The polymer in the dispersion generally includes acid groups and is neutralised, preferably with ammonia or a volatile amine. The dispersion can be made by reverse phase polymerisation of an aqueous blend of monomers, followed by dehydration, or by making the polymer from a water insoluble blend of monomers by oil in water emulsion polymerisation, dispersing the resultant oil in water emulsion into the non-aqueous liquid, and then dehydrating. The monomer including the hydrophobic group is preferably an allyl ether.

COMPOSITE MIXTURES FOR IMPROVING GEL STRENGTH OF WATER ABSORBENT GELS

This invention is directed to a method for increasing the gel strength of a water-absorbent composition comprising a water-absorbent amount of a crosslinked water-swellable hydrophilic polymer and an inorganic powder in an amount sufficient to increase the gel strength of the water-absorbent composition. The method is characterized by physically blending the inorganic polymer with the polymer after the polymer has been polymerized and crosslinked. The compositions produced by the method of this invention can be incorporated into applications useful in removing water from numerous systems.

PARTICULATE, FREE-FLOWING, INSOLUBLE SWELLABLE POLYMERS AND PROCESS FOR PREPARATION

NON-AQUEOUS DISPERSIONS OF WATER-SOLUBLE POLYMERS AND AQUEOUS SOLUTIONS THEREFROM

Stable non-aqueous dispersion of water-soluble polymers of extremely high molecular weight coupled with relatively low viscosity and rapid dilutability with water to form a polymer solution are obtained by polymerization of at least one water-soluble .alpha.,.beta.-monoolefinically unsaturated monomer such as acrylamide and dimethyl aminoethyl methacrylate in water-in-oil emulsion with the aid of at least one photoinitiator and UV-light, and azeotropical distillation from water, before or after the addition of a water-soluble wetting agent, to a residual water content of less than 5% by weight, based on polymer. The dispersions are eminently suitable for the preparation of aqueous solution, as retention agents for fillers and water-removal accelerators in the production of paper.

SOLVENT WELDING PROCESS

The present invention relates to a solvent-welding process for water-soluble films, characterised in that the solvent has a viscosity of from 1.5 to 15,000 mPa.s.

SUPERABSORBENTS, PREPARATION THEREOF AND USE THEREOF

This invention relates to a superabsorber made from polycarboxy polysaccharides which are cross-linked at the surface thereof, exhibiting excellent stable absorption properties to counter ageing, even when under pressure, which is highly resistant to abrasion and biodegradable. The invention also relates to the use thereof to absorb water and aqueous or serum fluids, such as blood. The invention further relates to a method for production which is not affected by the varying quality of raw materials and which allows for a uniform product quality.

ABSORBANT STRUCTURES COMPRISING COATED WATER-SWELLABLE MATERIAL

This invention relates to an absorbent structure that comprises water- swellable material, which comprises water-swellable polymers that are coated with a coating agent said coating agent comprising a phase-separating elastomeric material, which allows swelling of the water-swellable polymers, without breakage of the coating.

WATER SOLUBLE FILM FOR THERMOFORMING DEEP-DRAWN PROFILES AND THERMOFORMED ARTICLES COMPRISING SAME

The disclosure provides a water soluble film suitable for thermoforming deep-drawn profiles, the film including a mixture of a water soluble polyvinyl alcohol (PVOH) resin and a plasticizer, and the film being characterized by a storage modulus at 90°C less than 1.5 x 108. The disclosure further provides a thermoformed article comprising the water soluble film according to the disclosure.

ABSORBING STRUCTURE HAVING IMPROVED BLOCKING PROPERTIES

The invention relates to a process for the production of an absorbing polymer structure (Pa) comprising the following steps: - increasing the absorption under load at a load of 0.3 or 0.9 psi (AUL) compared to an untreated absorbing polymer structure (Pu) by a first treatment of an outer region of the untreated absorbing polymer structure (Pu), a treated absorbing polymer structure (Pb) being obtained, - reducing the AUL compared to the treated polymer structure (Pb) by a second treatment of an outer region of the treated absorbing polymer structure (Pb), an absorbing polymer structure that can be obtained by this process, a polymer structure, a composite, a process for the production of a composite, a composite that can be obtained by this process, foams, moulded articles, fibres, sheets, films, cables, sealing materials, liquid-absorbing hygiene articles, carriers for plant growth- regulating and fungal growth-regulating agents, packaging materials and soil additives or building materials ...

AN ABSORBENT MEMBER COMPRISING A MODIFIED WATER ABSORBENT RESIN

This invention is to provide an absorbent member and a method for making such an absorbent member. The absorbent member comprises modified water absorbent having good production efficiency, good absorbency against pressure, good absorption speed, gel strength, good liquid permeability, and the like. The modified water absorbent resin is made by a method, which comprises (i) a mixing step comprising mixing a water absorbent resin, water, and a water-soluble radical polymerization initiator without addition of an ethylenically unsaturated monomer, to obtain a water absorbent resin composition, and (ii) an irradiating step comprising irradiating said water absorbent resin composition obtained in the mixing step with active energy rays, wherein the surface water content of said water absorbent resin in said water absorbent resin composition at least at any point of time in the irradiating step (ii) is controlled to a level of not lower than 3.0% by weight based on 100% by weight of the water ...

ADDITIVE MIXING METHOD REDUCING TO A MINIMUM ADDITIVE SEGREGATION AND MIGRATION

L'invention concerne un procédé d'enrobage de particules d'un polymère superabsorbant par un additif anti-microbien. Le procédé selon l'invention comprend les étapes suivantes : (a) mélangeage et malaxage du polymère superabsorbant et de l'additif anti-microbien de façon à former une composition contenant 90 à 99,99% en poids de polymère et 0,01 à 10% en poids d'additif anti-microbien; et (b) étuvage de la composition obtenue à l'étape (a) à une température comprise entre la température de fusion de l'additif et 200.degree.C, jusqu'à la fusion totale de l'additif. Ce procédé permet de minimiser la ségrégation de l'additif et sa migration.

BIOACTIVE AGENTS INCLUDED IN FUNCTIONALIZED STARCH HAVING A SINGLE HELIX V-STRUCTURE

The present document describes a powder composition comprising a functionalized starch having a single helix V-structure and having a degree of substitution of at least 0.25, and a bioactive agent, forming an inclusion complex with said functionalized starch, where the bioactive agent is within the helix V-structure of the functionalized starch having a single helix V-structure. Also described are the functionalized starch having a single helix V-structure and having a degree of substitution of at least 0.25, methods of making the same and methods of using the same to manufacture the powder composition.

ENCAPSULATED CLEANING COMPOSITION

An encapsulated cleaning composition includes a core cleaning composition and a water-soluble film disposed about the core cleaning composition. The core cleaning composition itself includes an ionic liquid, water present in an amount of from 10 to 50 parts by weight per 100 parts by weight of the core cleaning composition, and at least one of a chelant, an enzyme, and a surfactant. The water-soluble film has a disintegration time of less than 90 seconds as determined at 40°C using distilled water according to MSTM 205, when disposed about the core cleaning composition. The water-soluble film also remains stable for 6 months at 25°C, when disposed about the core cleaning composition.

AGGREGATES OF WATER-SWELLABLE POLYMERS AND A METHOD FOR PRODUCING THEM, AGGREGATES HAVING INCREASED HYDRATION RATE OVER UNASSOCIATED WATER-SWELLABLE POLYMERS

Clusters of water-swellable polymer fines, having high rates of absorbency without gel-blocking are prepared by suspending water-swellable polymer particles in an inert hydrophobic liquid, such as hydrocarbon, and slowly adding to the particles an aqueous solution, which can be water or an aqueous solution or mixture of water-soluble monomer and silica or a similar compound to silica. 36,761-F ...

AGGLOMERATED POLYMER PARTICLES PRODUCED FROM FINELY DIVIDED WATER-SOLUBLE OR WATER-SWELLABLE POLYMERISATES

... 2085481 9213912 PCTABS00014 Described are agglomerated polymer particles produced from finely divided water-soluble or water-swellable polymerisates and a method of producing such particles by the removal of water from azeotropic water-in-oil emulsions of water-soluble or water-swellable polymerisates in the presence of 1-40 % by wt., relative to the polymers, of poly(alkylene glycol) compounds (a) obtained by the addition reaction of C2-C4 alkylene oxides with alcohols, phenols, amines or carboxylic acids and (b) containing at least two alkylene oxide units in the polymer structure. The agglomerated polymer particles thus produced are subsequently isolated. The water-soluble agglomerated polymer particles may be used as flocculation, retention and water-removal agents, while the water-swellable polymer powder may be used as a thickening agent for aqueous systems, in particular for textile-printing pastes.

HYDROGEL COMPOSITION AND METHODS OF MAKING IT

The invention provides a translucent, water-insoluble hydrogel composition and methods of making it. The hydrogel composition comprises a polyvinyl alcohol polymer and a complexing agent which are physically crosslinked to form a semi-crystalline polyvinyl alcohol-complexing agent polymer complex. This is achieved by: (i) combining a polyvinyl alcohol polymer with a suitable aprotic solvent; (ii) Adding a complexing agent to (i) to form a water soluble complex with the polyvinyl alcohol polymer; and (iii) Allowing the polyvinyl alcohol polymer and the complexing agent to form a water-insoluble, semi-crystalline structure. The formation of the semi-crystalline structure is assisted by freezing the polyvinyl alcohol/complexing agent/polar aprotic solvent mixture.

Water-Absorbent Surface-Modified-Clay Linked Polymers

An aqueous acidic polymerization liquid comprising polymerisable monomers or oligomers with carboxylate and/or carboxylic acid moiety or moieties, and basal surface modified clay that is homogenously dispersable in said liquid is provided, and also methods for making such liquids, and also surface-modified-clay linked water-absorbing polymers made with said liquids and methods, and disposable absorbent articles comprising such surface-modified-clay linked water-absorbing polycarboxylate/polycarboxylic acid polymers.

Particulate water absorbent and process for production thereof

A particulate water absorbing agent of the present invention is a water absorbing agent containing a water absorbing resin as a main component, the particulate water absorbing agent containing a polyvalent metal cation and satisfying: (1) the polyvalent metal cation is contained in an amount between 0.001 wt % and 5 wt % relative to the amount of the water absorbing agent; (2) an absorbency without pressure (CRC) is not less than 28 (g/g) and an absorbency against pressure (AAP 4.83 kPa) is not less than 10 (g/g); (3) the absorbency against pressure and the absorbency without pressure satisfy 77≦AAP (4.83 kPa)+1.8×CRC≦100; and (4) a moisture content of the water absorbing agent is between 5 wt % and 20 wt %. This provides a water absorbing agent which has blocking resistance after moisture absorption, is excellent in stability to shock and suppresses Re-Wet when used in a diaper.

Method for re-wetting surface post-cross-linked, water-absorbent polymer particles

A process for producing water-absorbing polymer particles, wherein surface postcrosslinked water-absorbing polymer particles are remoisturized and classified, and wherein the time between remoisturization and classification is at least 15 minutes.

Drying method for granular water-containing gel-like cross-linked polymer

The present invention is to provide a drying method by which both cost reduction and superior physical properties can be attained in a step which comprises subjecting a water-containing gel-like crosslinked polymer obtained by polymerizing an aqueous monomer solution to fine granulation during or after the polymerization, and drying the resultant particulate water-containing gel-like crosslinked polymer with a through-circulation band dryer. The method has a feature in that the drying conditions over a period from a time of introducing the particulate water-containing gel-like crosslinked polymer into a drying zone of the through-circulation band dryer to a time of reaching a solid content concentration thereof to 80% by weight, satisfy that (1) a difference of temperature between a temperature of hot air blown to a particulate hydrogel layer and a temperature measured after the hot air passes through the particulate hydrogel layer is 20 to 70° C.

Method for the Continuous Production of Water Absorbent Polymer Particles

A process for continuously preparing water-absorbing polymer beads, comprising the drying of a polymer gel on a forced-air belt dryer, the water content of the polymer gel being used to control the forced-air belt dryer during or after the drying.

Composite particulate build materials

The present disclosure is drawn to a composite particulate build material, including 92 wt % to 99.5 wt % polymeric particles having an average size from 10 μm to 150 μm and an average aspect ratio of less than 2:1. The composite particulate build material further includes from 0.5 wt % to 8 wt % reinforcing particles having an average size of 0.1 μm to 20 μm and an average aspect ratio of 3:1 to 100:1 applied to a surface of the polymeric particles.

Responsive hydrogel for the detection of biomolecules

The present invention relates to a responsive hydrogel which is chemically crosslinked, has a porous photonic crystal structure and contains biomolecule-specific detection groups.

SUPER ABSORBENT POLYMER AND METHOD FOR PREPARING THE SAME

The present invention relates to a super absorbent polymer and a method for preparing the same. The present invention has features that it is possible to prepare a super absorbent resin that can have an improved centrifuge retention capacity (CRC) and a high absorbency under load (AUL) by controlling the shape and size of the chopper die holes during coarse pulverization of a hydrous gel phase polymer. 1. A super absorbent polymer comprising a crosslinked polymer , the crosslinked polymer being obtained by surface-crosslinking a base polymer prepared by polymerizing a water-soluble ethylene-based unsaturated monomer including an acidic group in which at least a part of the acidic group is neutralized , wherein the super absorbent polymer hasa centrifuge retention capacity (CRC) of more than 20 g/g,an absorbency under 0.9 psi load (AUL) of more than 18 g/g, and {'br': None, 'ARUL=0.3AUL(5 min)/0.3AUL(60 min)\u2003\u2003[Equation 1]'}, 'ARUL shown in the following Equation 1 of 60% to 85%in Equation 1, {'br': None, 'i': Wb', 'Wa, '0.3AUL(g/g)=[(g)−(g)]/weight(g) of the absorbent polymer\u2003\u2003[Equation 2]'}, '0.3AUL (5 min) and 0.3AUL (60 min) are the values of absorbency under load (AUL) at 5 minutes and 60 minutes shown in the following Equation 2, respectively,'}in Equation 2,Wa(g) is the sum of the weight of the absorbent polymer and the weight of the device capable of providing a load for the absorbent polymer, andWb(g) is the sum of the weight of the absorbent polymer in which moisture is absorbed after supplying water for the absorbent polymer under a load (0.3 psi) for 5 minutes or 60 minutes, and the weight of the device capable of providing a load for the absorbent polymer.2. The super absorbent polymer according to wherein {'br': None, 'sub': '1', 'sup': '1', 'R-COOM\u2003\u2003[Chemical Formula 1]'}, 'the water-soluble ethylene-based unsaturated monomer is a compound represented by the following Chemical Formula 1in Chemical Formula 1,{'sub': 1', '1', ...

Super Absorbent Polymer And Method For Producing Same

A super absorbent polymer according to the present invention has excellent dryness while maintaining excellent absorption performance, and thus is preferably used for hygienic materials such as diapers, and can exhibit excellent performance.

RESIN COMPOSITE AND METHOD FOR PRODUCING RESIN COMPOSITE

It is an object of the present invention to provide a resin composite that is excellent in water resistance and is capable of exerting sufficient strength even under wet conditions. The present invention relates to a resin composite comprising a resin, fibers having an ionic functional group, and a polyvalent ion. The fibers having an ionic functional group are preferably cellulose fibers having a fiber width of 1000 nm or less. 1. A resin composite comprising a resin , fibers having an ionic functional group , and a polyvalent ion.2. The resin composite according to claim 1 , wherein the fibers are cellulose fibers having a fiber width of 1000 nm or less.3. The resin composite according to claim 1 , wherein the ionic functional group is an anionic functional group.4. The resin composite according to claim 1 , wherein the ionic functional group is a phosphoric acid group.5. The resin composite according to claim 1 , wherein the polyvalent ion is a metal ion.6. The resin composite according to claim 1 , wherein the resin is a hydrophilic resin.7. The resin composite according to claim 1 , wherein when the mass of the resin composite immersed in ion-exchanged water for 24 hours is defined as E and the mass of the resin composite left to stand for 24 hours under conditions of 23° C. and a relative humidity of 50% is defined as F claim 1 , the water absorption rate represented by (E−F)/F×100 is 500% or less.8. The resin composite according to claim 1 , wherein when the area of the resin composite immersed in ion-exchanged water for 24 hours is defined as G and the area of the resin composite left to stand for 24 hours under conditions of 23° C. and a relative humidity of 50% is defined as H claim 1 , the rate of expansion and contraction represented by G/H×100 is 130% or less.9. The resin composite according to claim 1 , wherein the resin composite is a sheet.10. The resin composite according to claim 1 , wherein in the case of measuring the concentrations of the fibers ...

Super Absorbent Polymer and Method for Producing Same

The present invention relates to an olefin polymer and a method for producing the same. The super absorbent polymer can exhibit excellent absorbent properties even in a swollen state and thus exhibit excellent anti-rewetting effects. Accordingly, when the super absorbent polymer is used, it is possible to provide a sanitary material such as a diaper or a sanitary napkin which can give a smooth touch feeling even after the body fluid is discharged.

Water-Soluble Film Sealing Solutions, Related Methods, and Related Articles

Disclosed herein are sealing solutions for sealing water-soluble films, in particular aqueous mixtures including one or more polymeric solvents such as polyols. Aqueous sealing solutions including a relatively dilute solvent for one or more polymeric components of the water-soluble film (e.g., water-soluble polymeric components thereof, such as polyvinyl alcohol (PVOH)) can exhibit one or more benefits, including a reduction in dissolution of the film by the sealing solution and an increase in seal strength. Also disclosed are sealed articles formed with the sealing solutions, for example water-soluble packets containing various liquid or solid compositions.

IMPROVED WATER SOLUBLE PACKAGING

This invention relates to improved water soluble, polyvinyl alcohol based film packaging. More particularly, this invention relates to the use of polyvinyl alcohol based films having a defined crystalline structure, in antimicrobial packaging applications. 1) A water soluble , polyvinyl alcohol based film packaging comprising:i. a sealed, water soluble polyvinyl alcohol based film;wherein water soluble polyvinyl alcohol based film is sealed around a predetermined amount of antimicrobial; andii. three separate crystallinity index values of greater than 5, greater than 9 and greater than 0.75, respectively.2) The water soluble claim 1 , polyvinyl alcohol based film packaging of comprising an antimicrobial that is 2 claim 1 ,2-dibromo-3-nitrilopropionamide.3) The use of the water soluble claim 1 , polyvinyl alcohol based film packaging of in cooling water systems claim 1 , hydrotesting waters claim 1 , waters associated with the production or recycling of energy related hydrocarbons claim 1 , reverse osmosis membranes claim 1 , metalworking solutions claim 1 , pulp and paper applications claim 1 , and mineral slurries in addition to equipment and plant cleaning claim 1 , paint and colorant manufacture claim 1 , and raw material clean up applications.4) The use of the water soluble claim 2 , polyvinyl alcohol based film packaging of in cooling water systems claim 2 , hydrotesting waters claim 2 , waters associated with the production or recycling of energy related hydrocarbons claim 2 , reverse osmosis membranes claim 2 , metalworking solutions claim 2 , pulp and paper applications claim 2 , and mineral slurries in addition to equipment and plant cleaning claim 2 , paint and colorant manufacture claim 2 , and raw material clean up applications.5) A water soluble claim 1 , polyvinyl alcohol based film packaging product comprising multiple packages wherein at least 60% of the packages comprise the packaging of . This invention relates to improved water soluble, polyvinyl ...

DEVICE AND METHOD FOR THE CONTINUOUS HIGH-PRESSURE TREATMENT OF BULK MATERIAL AND USE THEREOF

An apparatus and method for high pressure treatment of bulk material by extraction and/or impregnation may involve high pressure treating bulk material in a high pressure treatment volume of a pressure vessel apparatus at a high pressure level, especially high pressure in the range from 40 to 1000 bar. The method comprises at least the three following step sequences that are each controllable individually: pressurization, high pressure treatment, and depressurization. The high pressure treatment is performed in a continuous manner in the high pressure treatment volume. The high pressure treatment volume or the entire pressure vessel apparatus is in a fixed arrangement during the high pressure treatment. The continuity of the high pressure treatment is ensured solely by means of the high pressure treatment volume. This especially enables engineering optimization of high pressure treatment processes, for example extraction. 116-. (canceled)17. A method for high pressure treatment of bulk material by extraction , wherein the bulk material is disposed in a high pressure treatment volume , which has cavities , of a pressure vessel apparatus and is treated at a high pressure level in a range from 40 to 1000 bar , wherein the method comprises:pressurizing the high pressure treatment volume;high pressure treating the bulk material in a continuous manner in the high pressure treatment volume, with continuity of the high pressure treating being ensured solely by way of the high pressure treatment volume, wherein the high pressure treatment volume or the pressure vessel apparatus is in a fixed arrangement during the high pressure treating, wherein the high pressure treating comprises continuously displacing the bulk material by translation of a translational actuator within the high pressure treatment volume; anddepressurizing the high pressure treatment volume.18. The method of wherein the translational actuator is a piston inserted into an end face of the high pressure ...

Sustainable hybrid organic aerogels and methods and uses thereof

Highly porous, lightweight, and sustainable hybrid organic aerogels with ultra-low densities and excellent material properties and methods for preparing them are provided, including, e.g., PVA/CNF/GONS, RF/CNF/GONS, and PVA/CNF/MWCNT. The aerogels are modified to have a super-hydrophobic surface, thus leading to an extremely low swelling ratio and rate of moisture absorption.

SEALING COMPOSITIONS FOR WATER SOLUBLE FILMS AND METHODS OF USING

A sealing composition for use in unit dose packages is provided, including: 70 to 98 wt % water; 1 to 30 wt % of a hydrogen bonding component; and 1 to 30 wt % of a complex forming component. 1. A sealing composition for use in unit dose packages , comprising:70 to 98 wt % water;1 to 30 wt % of a hydrogen bonding component; and1 to 30 wt % of a complex forming component.2. A method of forming a unit dose package , comprising: '19 to 85 wt % of a partially hydrolyzed polyvinyl acetate;', 'providing a free standing film, comprising{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'providing a sealing composition according to ;'}applying the sealing composition to a first surface of the free standing film;contacting a second surface of the free standing film with the sealing composition applied on the first surface to form a seal between the first surface and the second surface.3. The method of claim 2 , wherein the free standing film provided further comprises:5 to 70 wt % of a poly(ethylene oxide);1 to 35 wt % of a polyalkylene glycol;0.5 to 25 wt % of a plasticizer;0 to 10 wt % of a poly(isobutylene-co-maleic anhydride) copolymer, wherein the poly(isobutylene-co-maleic anhydride) copolymer is at least partially neutralized; and0 to 10 wt % of an optional additive.4. The method of claim 3 , wherein the free standing film provided includes1 to 7.5 wt % of the poly(isobutylene-co-maleic anhydride) copolymer.5. The method of claim 4 , wherein the free standing film provided further comprises:0.01 to 1.8 wt % of a polyvinyl pyrrolidone;wherein the weight ratio of the partially hydrolyzed polyvinyl acetate to the polyvinyl pyrrolidone is >10:1.6. The method of claim 5 , wherein the free standing film provided includes at least one optional additive selected from the group consisting of a nano clay claim 5 , a defoamer claim 5 , a crosslinking agent and mixtures thereof.7. The method of claim 6 , wherein the free standing film provided contains:0.05 to 0.2 wt % of the ...

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

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

CRITICAL POINT DRYING OF HYDROGELS IN ANALYTE SENSORS

A hydrogel is dried by a critical point drying technique. The hydrogel may include indicator molecules embedded therein and may be part of a hydrogel-based device, such as, for example, an analyte sensor. 1. A method of preparing a hydrogel for a hydrogel-based device , the method comprising drying the hydrogel by a critical point drying technique.2. The method of claim 1 , wherein the hydrogel-based device comprises a sensor configured for sensing the presence of an analyte in contact with the sensor and including an indicator comprising the hydrogel and configured to emit a detectable signal or a change in a detectable signal indicating the presence of the analyte.3. The method of claim 1 , wherein the critical point drying technique comprises:{'sub': '2', 'replacing water within the hydrogel with an intermediate fluid that is miscible with water and CO;'}{'sub': '2', 'replacing the intermediate fluid within the hydrogel with CO;'}{'sub': '2', 'manipulating temperature and pressure to achieve super critical CO; and'}{'sub': '2', 'removing the supercritical COfrom the hydrogel.'}4. The method of claim 3 , wherein the temperature for achieving super critical COis about 30-35° C. and the pressure for achieving supercritical COis about 1000-1200 psi.5. The method of claim 1 , further comprising storing the hydrogel-based device at room temperature after the critical point drying step.6. The method of claim 1 , further comprising implanting the hydrogel-based device into a patient after the critical point drying step without pre-hydrating the hydrogel-based device prior to implanting.7. A hydrogel dried by a critical point drying technique.8. The hydrogel of claim 7 , wherein the critical point drying technique maintains the physical properties of the hydrogel.9. The hydrogel of claim 7 , wherein the critical point drying technique extends the shelf life of the hydrogel.10. The hydrogel of claim 7 , wherein the critical point drying technique does not change the ...

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 ...

Method for making photochromic contact lenses

Described herein is a method for producing photochromic contact lenses, in particular, photochromic silicone hydrogel contact lenses. The method comprises a step of cast molding of a lens-forming composition including an iniferter to form an unprocessed contact lens having iniferter moieties covalently incorporated into its polymer matrix and a step of iniferter-induced graft-polymerization of a photochromic vinylic monomer to the polymer matrix only in its central region which is circular and concentric with the central axis of the unprocessed contact lens. The obtained photochromic contact lens has a central pupillary region that only can undergo a reversible color change upon exposure to UV/HEVL-radiation.

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 ...

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 articles (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 become a water-soluble vinyl monomer (al) upon hydrolysis and from a crosslinking agent (b), to surface treatment by a specific method using a C4 or lower polyhydric alcohol (c), a polyvalent metal salt (d), and a polyglycidyl compound (e); and the aqueous-liquid absorbing resin articles (P). 1. A process for producing aqueous-liquid absorbing resin articles (P) comprising surface-treating resin particles (B) containing a crosslinked polymer (A) having , as essential constituent units , a water-soluble vinyl monomer (a1) and/or a vinyl monomer (a2) to be converted into the water-soluble vinyl monomer (a1) by hydrolysis and a crosslinking agent (b) by any one of the following methods [I] to [III] using a polyhydric alcohol having up to 4 carbon atoms (c) , a polyvalent metal salt (d) , and a polyglycidyl compound (e): 'a method including surface-treating resin particles (B) using a mixed liquid (W1) containing a polyhydric alcohol having up to 4 carbon atoms (c), a polyvalent metal salt (d), a polyglycidyl compound (e), and water;', 'Method [I] a method including surface-treating resin particles (B) using a mixed liquid (W2) containing a polyhydric alcohol having up to 4 carbon atoms (c), a polyglycidyl compound (e), and water and containing no polyvalent metal salt (d) and a mixed liquid (W3) containing a polyhydric alcohol up to 4 carbon atoms (c), a polyvalent metal salt (d), ...

Preparation Method of Super Absorbent Polymer

The present disclosure relates to a preparation method of a super absorbent polymer containing a novel cross-linking agent compound. The preparation method of a super absorbent polymer of the present disclosure can provide a super absorbent polymer exhibiting excellent absorption properties and an excellent deodorizing effect by including a cross-linking agent with a novel structure. Therefore, according to the present disclosure, since a separate additive for a deodorizing property is not required, processability and economic efficiency of the manufacturing process can be improved. 2. The preparation method of a super absorbent polymer of claim 1 ,{'sub': 1', '2, 'wherein Rand Rof Chemical Formula 1 are hydrogen.'}3. The preparation method of a super absorbent polymer of claim 1 ,{'sub': 3', '4, 'wherein Rand Rof Chemical Formula 1 are each independently a C1 to C5 alkyl.'}4. The preparation method of a super absorbent polymer of claim 1 ,{'sub': '5', 'wherein Rof Chemical Formula 1 is a linear or branched C1 to C10 alkylene substituted with a C1 to C10 alkenyl, or a linear or branched C2 to C10 alkenylene.'}6. The preparation method of a super absorbent polymer of claim 1 ,wherein the compound represented by the following Chemical Formula 1 is contained in an amount of 1 to 100 wt % based on a total weight of the internal cross-linking agent.7. The preparation method of a super absorbent polymer of claim 1 ,wherein the internal cross-linking agent is contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the acrylic acid-based monomer.8. The preparation method of a super absorbent polymer of claim 1 ,wherein the drying of the hydrogel polymer is carried out at a temperature of 150 to 200° C.9. The preparation method of a super absorbent polymer of claim 1 ,wherein the drying of the hydrogel polymer is carried out for 10 to 100 minutes.10. The preparation method of a super absorbent polymer of claim 1 ,wherein the base resin has a ...

LIGHT-ASSISTED PHOTOCATALYST REGENERATION AND OXYGEN-RESILIENT RADICAL POLYMERIZATION

A photocatalyst can be regenerated with increasing efficiency, turnover number and turnover frequency in the presence of air by irradiating the photocatalyst with a first range of wavelengths of light that excite the photocatalyst to an intermediate and irradiating the intermediate with a second range of wavelengths of light that turns the intermediate to the photocatalyst. 1. A method of regenerating a photocatalyst comprising:irradiating the photocatalyst with a first range of wavelengths of light that excite the photocatalyst to one or more intermediates; andirradiating the one or more intermediates with a second range of wavelengths of light that turns the intermediate to the photocatalyst.2. The method of claim 1 , wherein the one or more intermediates turns to the photocatalyst in the presence of oxygen.3. The method of claim 1 , wherein the photocatalyst is in a medium.4. The method of claim 3 , wherein the medium is aqueous.5. The method of claim 3 , wherein the medium is non-aqueous.6. The method of claim 1 , wherein the photocatalyst is Eosin Y.7. The method of claim 6 , wherein the first range of wavelengths of light is from 430 nm to 560 nm.8. The method of claim 6 , wherein the first range of wavelengths of light is from 516 nm to 525 nm.9. The method of claim 6 , wherein the second range of wavelengths of light is from 350 nm to 420 nm.10. The method of claim 6 , wherein the second range of wavelengths of light is from 405 nm to 408 nm.11. The method of claim 1 , wherein a concentration of the photocatalyst in the medium is 0.1-40 μM.12. The method of claim 1 , wherein an intensity of the first range of wavelengths of light is 0.75-35 mW/cm.13. The method of claim 1 , wherein the photocatalyst polymerizes hydrogel.14. A method of diagnosing a disease comprising:preparing a solution including a monomer and a photocatalyst in a medium;adding a body fluid to the solution;irradiating the solution with a first range of wavelengths of light that excite the ...

EXTREMELY COMPLIANT YET TOUGH HYDROGEL SYSTEMS AS ULTRASOUND TRANSMISSION AGENTS

A method for making a tough and compliant hydrogel. A precursor hydrogel is made of a first polymer selected to maintain high elasticity and a second polymer selected to dissipate mechanical energy. The precursor hydrogel is stretched to a multiple of its original length to form a pre-stretched hydrogel. The pre-stretched hydrogel is allowed to relax and is soaked in a biocompatible solvent to reach equilibrium swelling of the pre-stretched hydrogel whereby shear modulus of the hydrogel is reduced. 1. An ultrasound transmission agent comprising:a tough and compliant hydrogel comprising a long chain polymer network and a sacrificial chain polymer network,wherein the hydrogel is provided with a low shear modulus and a high fracture toughness,and wherein the hydrogel is conformable to various shapes.2. The ultrasound transmission agent of claim 1 , wherein the hydrogel has a shear modulus below 10 kPa.3. The ultrasound transmission agent of claim 1 , wherein the hydrogel has a shear modulus of about 5 kPa or less.4. The ultrasound transmission agent of claim 1 , wherein the hydrogel has a shear modulus of about 1 kPa or less.5. The ultrasound transmission agent of claim 1 , wherein the long chain network is selected from the group consisting of polyacrylamide claim 1 , polyethylene glycol claim 1 , poly (vinyl alcohol) claim 1 , poly (N-isopropyl acrylamide) claim 1 , and poly (2-hydroxyethyl methacrylate).6. The ultrasound transmission agent of claim 1 , wherein the sacrificial chain network is selected from the group consisting of alginate claim 1 , hyaluronic acid claim 1 , collagen claim 1 , agarose claim 1 , gelatin claim 1 , fibrin and chitosan.7. The ultrasound transmission agent of claim 1 , wherein the volume concentration of the long chain network in the hydrogel ranges from 5% to 40% claim 1 , and the volume concentration of the sacrificial chain network ranges from 0.15% to 10%.8. The ultrasound transmission agent of claim 1 , wherein the volume ...

Disposable diaper recycling and applications thereof

One embodiment provides a modular green roof tray, house plant growth media and horticulture growth media, and a tree protection mat for weed and moisture control made from recycled disposable diapers. The growth medium and tree protection mat contain superabsorbent materials from diaper that can absorb waters and greatly reduce irrigation so to provide a drought resistant feature. One embodiment also provides a manufacturing process to perform 100% recycling of disposed diapers.

Gas barrier film and packaging material

A gas barrier film comprises a first base material film made of a plastic material and a coating layer formed on one of surfaces of the first base material film, the coating layer contains a water-soluble polymer and a water-swelling mica, the solid content ratios of the water-swelling mica in a total solid content of the coating layer are within approximate ranges indicated from 20 mass % to 50 mass %, the mean area diameter of the water-swelling mica is within approximate ranges indicated from 0.5 μm to 5 μm, and the thickness of the coating layer is within approximate ranges indicated from 0.1 μm to 1 μm.

Water soluble instruments and containers

One embodiment provides a disposable tool. The disposable tool may include an exterior layer disposed over one or more dissolvable layers forming a shape of the disposable tool. The exterior layer is coated with an impermeable coating. The disposable tool includes one or more segments that are not coated with the impermeable coating. The disposable tool may be utilized for consumption of food or liquids or as an applicator, such as a tampon applicator.

SUPER ABSORBENT POLYMER AND METHOD FOR PRODUCING SAME

The present invention relates to a super absorbent polymer and a method for producing same. The super absorbent polymer can achieve a high deodorizing function while exhibiting excellent absorption properties. As such, by using the super absorbent polymer, adult diapers having a thin thickness and high deodorizing function can be provided. 1. A super absorbent polymer comprising: a base resin powder including a cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; a surface cross-linked layer that is further cross-linked from the cross-linked polymer and is formed on the base resin powder; and an inorganic material , wherein the super absorbent polymer has an ammonia removal efficiency of 60% or more , a centrifuge retention capacity (CRC) for a physiological saline solution of 26 to 40 g/g , and an absorbency under load (AUL) under 0.9 psi for a physiological saline solution of 17 to 25 g/g.2. The super absorbent polymer of claim 1 , wherein it has a pH of 5.3 to 6.0.3. The super absorbent polymer of claim 1 , wherein the cross-linked polymer is a cross-linked polymer of water-soluble ethylenically unsaturated monomer having an acidic group that is neutralized to 55 to 65 mol % with respect to the total monomer.4. The super absorbent polymer of 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 claim 1 , vermiculite claim 1 , volkonskoite claim 1 , magadite claim 1 , medmontite claim 1 , kenyaite claim 1 , kaolin mineral claim 1 , serpentine mineral claim 1 , mica mineral claim 1 , chlorite mineral claim 1 , sepolite claim 1 , palygorskite claim 1 , bauxite or a mixture thereof.5. The super absorbent polymer of claim 1 , wherein it has a centrifuge retention capacity (CRC) for a physiological saline solution of 30 to 40 g/g.6. The super absorbent ...

Superabsorbent Polymer and Preparation Method Thereof

Provided are a superabsorbent polymer and a preparation method thereof. According to the present invention, a superabsorbent polymer having high centrifuge retention capacity and absorption rate may be prepared by using a specific foam stabilizer. 1. A superabsorbent polymer comprising a base polymer resulting from polymerization and internal crosslinking of a monomer composition including acrylic acid-based monomers having acidic groups which are at least partially neutralized; and a surface crosslinking layer formed on the surface of the base polymer , wherein the base polymer has centrifuge retention capacity (CRC) of 35 g/g or more as measured in accordance with EDANA WSP 241.3 , absorption rate of 40 seconds or less as measured by a vortex method , and bulk density of 0.51 g/mL to 0.70 g/mL.2. The superabsorbent polymer of claim 1 , wherein the acrylic acid-based monomer is represented by the following Formula 1:{'br': None, 'sup': 1', '1, 'R—COOM\u2003\u2003[Formula 1]'}{'sup': '1', 'wherein Ris an alkyl group containing an unsaturated bond and having 2 to 5 carbon atoms, and'}{'sup': '1', 'Mis a hydrogen atom, a monovalent or divalent metal, an ammonium group, or an organic amine salt.'}3. The superabsorbent polymer of claim 1 , wherein the acrylic acid-based monomer includes one or more selected from the group consisting of acrylic acid claim 1 , methacrylic acid claim 1 , and monovalent metal salts claim 1 , divalent metal salts claim 1 , ammonium salts claim 1 , and organic amine salts thereof.4. The superabsorbent polymer of claim 1 , wherein the base polymer is internally crosslinked by one or more internal crosslinking agents selected from the group consisting of N claim 1 ,N′-methylenebisacrylamide claim 1 , trimethylolpropane tri(meth)acrylate claim 1 , ethylene glycol di(meth)acrylate claim 1 , polyethylene glycol (meth)acrylate claim 1 , polyethylene glycol di(meth)acrylate claim 1 , propylene glycol di(meth)acrylate claim 1 , polypropylene glycol ( ...

FLEXIBLE, POROUS, DISSOLVABLE SOLID SHEET ARTICLES HAVING LARGE PORES AND METHOD OF MAKING SAME

This provides a flexible, porous, dissolvable solid sheet article having large pores on its top surface as well as a method of making the same. 1. A process for making a sheet article , comprising the steps of:{'sup': '1', 'a) preparing a wet pre-mixture comprising a water-soluble polymer and a surfactant and having a viscosity of from 1,000 cps to 25,000 cps measured at 40° C. and 1 s;'}b) aerating said wet pre-mixture to form an aerated wet pre-mixture having a density of from 0.05 to 0.5 g/ml;c) aging said aerated wet pre-mixture for at least 5 min;d) forming said aged aerated wet pre-mixture into a sheet having opposing first and second sides; ande) drying said formed sheet for a drying time of from 1 minute to 60 minutes to make the sheet article.2. The process according to claim 1 , wherein the step c) is conducted for a duration from 5 min to 300 min claim 1 , preferably from 5 min to 200 min claim 1 , more preferably from 10 min to 150 min.3. The process according to claim 1 , wherein said sheet of aged aerated wet pre-mixture is dried on a heated surface that has a controlled surface temperature of from 70° C. to 170° C. claim 1 , preferably from 75° C. to 150° C. claim 1 , more preferably from 80° C. to 140° C.; and wherein preferably said heated surface is a primary heat source for said sheet during drying; and wherein more preferably said heated surface is the only heat source for said sheet during drying.4. The process according to claim 3 , wherein said heated surface is the outer surface of a rotary drum dryer that preferably has an outer diameter ranging from 0.5 meters to 10 meters claim 3 , preferably from 1 meter to 5 meters claim 3 , more preferably from 1.5 meters to 2 meters and is rotated at a speed of from 0.005 rpm to 0.25 rpm claim 3 , preferably from 0.05 rpm to 0.2 rpm claim 3 , more preferably from 0.1 rpm to 0.18 rpm claim 3 , during the drying step.5. The process according to claim 4 , wherein said heated surface is the outer surface ...

PRODUCTION METHOD FOR PRODUCING WATER-ABSORBING POLYMER PARTICLES AND BELT DRYER

A production process for production of water-absorbing polymer particles including drying an aqueous polymer gel in a belt drier with a conveyor belt. The belt drier is formed with a drier setup substantially comprising the conveyor belt and an air recycling conduit downstream of the drier setup for air recycling, where recycled air is withdrawn from the drier setup and fed back to the drier setup via the air recycling conduit. 122.-. (canceled)23. A production process for production of water-absorbing polymer particles , where the production process has the following steps:polymerizing an aqueous monomer solution or suspension for production of an aqueous polymer gel,drying the aqueous polymer gel in a belt drier with a conveyor belt, by accommodating the aqueous polymer gel on the conveyor belt and conveying the polymer gel on the conveyor belt in a conveying direction (C),crushing and/or grinding the dried polymer gel to give water-absorbing polymer particles, wherefor drying:{'b': 101', '350', '101', '101', '101', '350, 'the belt drier is formed with a drier setup () substantially comprising the conveyor belt and an air recycling conduit () downstream of the drier setup () for air recycling, where recycled air (RL) is withdrawn from the drier setup () and fed back to the drier setup () via the air recycling conduit (), and'}{'b': 350', '340', '101', '350, 'the air recycling conduit () has an air withdrawal conduit () formed between an upstream intake section (EA) relative to air flow direction in the drier setup () and a downstream outlet section (AA) relative to air flow direction in the air recycling conduit (), characterised in that'}{'b': 340', '341', '354', '353', '352', '351, 'the air withdrawal conduit () has an air withdrawal line () and air recycling line () with internals, like at least one filter (), heat exchanger () and/or ventilator (),'}{'b': 1', '2', '3', '4', '340', '1', '2', '3', '4', '1', '2', '3', '4, 'a flow cross section in at least one air ...

Method For Producing Super Absorbent Polymer And Super Absorbent Polymer

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

Method For Producing Super Absorbent Polymer

A super absorbent polymer produced by the preparation method of the super absorbent polymer according to the present invention has excellent dryness while maintaining excellent absorption performance, and thus is preferably used for hygienic materials such as diapers and can exhibit excellent performance.

Superabsorbent material absorbent capacity increase with use of multifunctional chemical agents

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

Water-Soluble Encapsulated Acidifying Agent

The present invention is directed to materials and method of encapsulating chemical agents. In particular, the present invention is directed to compositions and methods of encapsulating an acidifying agent in a water soluble polymer encapsulant. 1. A composition , comprising:a water-soluble polymeric encapsulant; andan acidifying agent encapsulated in the water soluble polymer encapsulant.2. The composition of claim 1 , the acidifying agent comprising an alkali metal or ammonium salt of bisulfate or bisulfite claim 1 , or an ammonium halide.3. The composition of claim 1 , the acidifying agent comprising sodium bisulfate.4. The composition of claim 1 , formulated in a unit or pod dosage form.5. The composition of claim 1 , the water-soluble polymeric encapsulant being a water-soluble film.6. The composition of claim 1 , the water-soluble polymeric encapsulant being a flexible water-soluble film.7. The composition of claim 1 , the water-soluble polymeric encapsulant being a self-supporting water-soluble film.8. The composition of claim 1 , the acidifying agent being stable or inert with respect to the water-soluble polymeric encapsulant.9. The composition of claim 1 , the water-soluble polymeric encapsulant rendering the encapsulated acidifying agent stable or inert.10. The composition of claim 1 , further comprising one or more of: an active compound claim 1 , a disinfectant claim 1 , an antimicrobial claim 1 , a sporocide claim 1 , a stabilizing agent claim 1 , and a colorant.11. The composition of claim 1 , the water-soluble polymeric encapsulant being configured to provide timed release of the encapsulated acidifying agent over a period of about 1 minute to about 4 weeks.12. The composition of claim 1 , the water-soluble polymeric encapsulant being configured to provide time-delayed release of the encapsulated acidifying agent with a release time beginning from about 1 minute to about 4 weeks.13. The composition of claim 1 , the water-soluble polymeric encapsulant ...

Novel Synthetic Polymers and Crosslinked Hydrogel Systems

A novel synthetic functionalized backbone polymer is provided which is a polyanionic side-chain functionalized back-bone polymer comprising a hydrophilic backbone polymer functionalized with an activated alkene or epoxy group. The functionalized backbone polymer may be combined with a free or protected thiol-containing compound to form a crosslinked hydrogel having bio-medical application, and may additionally be combined with a hydrogel matrix to yield a hydrogel system useful for in vivo delivery of cells and other therapeutic agents. 1. A first side-chain functionalized polyanionic backbone polymer comprising a hydrophilic backbone polymer functionalized with an activated alkene or epoxy group.2. The side-chain functionalized polymer of claim 1 , wherein the backbone polymer is selected from homopolymers of polyacrylic acid or polymethacrylic acid;copolymers of acrylic acid or methacrylic acid with anionic, uncharged or cationic monomer;, copolymers of an alkyl vinyl ether with an acid anhydride monomer;copolymers of vinyl ethers of ethylene oxide oligomers with an acid anhydride monomer, polyanhydride and carboxylic acid anhydride polymers; copolymers of aromatic monomers with an acid anhydride monomer; polymers containing epoxy groups, and optionally including neutral or anionic monomers.3. The side-chain functionalized polymer of claim 1 , wherein the backbone polymer is a copolymer of an alkyl vinyl ether with an acid anhydride monomer.4. The side-chain functionalized polymer of claim 3 , wherein the acid anhydride is maleic claim 3 , itaconic or citraconic anhydride.5. The side-chain functionalized polymer of claim 1 , wherein the activated alkene or epoxy group is a vinylsulfone claim 1 , acrylate claim 1 , methacrylate claim 1 , maleimide or alkynyl group.6. The side-chain functionalized polymer of claim 1 , which is cysteamine vinyl sulfone-functionalized poly(methyl vinyl ether-alt-maleic acid).7. A method of making a polyanionic side-chain ...

Super-absorbent polymer and method for preparing same

The present invention relates to a super-absorbent polymer having excellent properties, both centrifugal retention capacity (CRC) and absorption under pressure (AUP) having been improved by introducing a surface crosslinked layer crosslinked by surface-modified inorganic particles, and to a method for preparing the same. The super-absorbent polymer comprises: a base resin powder containing a crosslinked polymer of water-soluble ethylene-based unsaturated monomers having an at least partially neutralized acidic group; and a surface crosslinked layer formed on the base resin powder, wherein inorganic particles may be chemically bound to the crosslinked polymer contained in the surface crosslinked layer, via an oxygen-containing bond or a nitrogen-containing bond.

Super Absorbent Polymer And Method For Producing Same

A super absorbent polymer according to the present invention has excellent dryness while maintaining excellent absorption performance, and thus is preferably used for hygienic materials such as diapers, and 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 an extractable content measured according to EDANA method No. WSP 270.2 is 13% by weight or less,wherein an absorption rate (vortex) measured according to the measurement method of Vortex is 50 seconds or less, andwherein a 6-hour dryness is 1.5 g or less.2. The super absorbent polymer of claim 1 , whereinthe super absorbent polymer has a centrifuge retention capacity (CRC) of 28 g/g or more.3. The super absorbent polymer of claim 1 , whereinthe super absorbent polymer has an absorbency under pressure (0.3 AUP) at 0.3 psi for a physiological saline solution (0.9 wt % sodium chloride aqueous solution) for 1 hour of 25 g/g or more.4. The super absorbent polymer of claim 1 , whereinthe super absorbent polymer has a liquid permeability of 10 seconds to 150 seconds.59-. (canceled)10. The super absorbent polymer of claim 1 , whereinthe surface crosslinking layer is formed by surface crosslinking by heat-treating the base resin powder in the presence of a surface crosslinking liquid,the surface crosslinking liquid comprises 3.5 parts by weight or less of water, 0.15 parts by weight or less of a surface crosslinking agent, and 0.01 to 0.5 parts by weight of an inorganic filler based on 100 parts by weight of the base resin powder.11. The super absorbent polymer of claim 10 , whereinthe surface crosslinking agent is ...

HYDROPHILIC GELS DERIVED FROM GRAFTED PHOTOINITIATORS

The invention provides a method for the manufacture of a gel, said method comprising the steps of: providing a matrix composition comprising a polymeric photoinitiator of the general formula (I): Polymer-[CR—CHR-Spacer(PI)](I) curing the matrix composition by exposing it to UV radiation and exposing the matrix composition to a swelling medium. The invention also relates to gels obtainable via the above method. The invention provides a hydrophilic gel precursor manufactured from the polymeric photoinitiator of Formula (I). Medical devices comprising the gels and hydrophilic gel precursors of the invention are provided. The invention also provides the use of a polymeric photoinitiator in the manufacture of a gel. 1. A method for the manufacture of a hydrophilic gel , said method comprising the steps of: {'br': None, 'sub': 2', 'n', 'm, 'Polymer-[CR—CHR-PH-X-(PI)]\u2003\u2003(I)'}, 'a) providing a matrix composition comprising a polymeric photoinitiator of the general formula Iwherein m is an integer from 1-5000;Ph is an optionally substituted phenyl group;n is a real number above 0 and below 5; andPI is a photoinitiator moiety;{'b': '1', 'X is selected from the group consisting of a single bond, a C1-C25 linear alkylene, a C3-C25 branched alkylene, a C3-C25 cycloalkylene, an arylene, a heteroarylene, an amine, an amide, an alcohol, an ether, an ester, a thioether, a sulfone and derivatives thereof, a sulfonic ester and derivatives thereof, a sulfoxide and derivatives thereof, a carbonate, a ketone and a polymeric moiety,'}and wherein each R group is a substituent independently selected from hydrogen, C1-C25 linear alkyl, C3-C25 branched alkyl, C3-C25 cycloalkyl, aryl, heteroaryl, —OH, —CN, halogens, NR′R″, where R′ and R″ are alkyl groups, CON R′R″, and R′CONR″—, where R′ and R″ are alkyl groups,b) curing the matrix composition obtained in step a) by exposing it to UV radiation,c) exposing the matrix composition to a swelling medium, thus providing a hydrophilic gel, ...

PURIFICATION SYSTEMS AND METHODS

A method of preparing hydrogel particles includes applying a solution including a plurality of hydrogel particles to a stir cell. A retentate side of a filter defines a lower surface of the stir cell. The filter has the retentate side and a permeate side. The method further includes, while stirring the solution within the stir cell, dispensing a buffer solution at a first flow rate to the stir cell and drawing a permeate from the permeate side of the filter using a pump at a second flow rate, the permeate including a subset of the plurality of hydrogel particles. 1. A method of preparing hydrogel particles , the method comprising:applying a solution including a plurality of hydrogel particles to a stir cell, a retentate side of a filter defining a lower surface of the stir cell, the filter having the retentate side and a permeate side; andwhile stirring the solution within the stir cell, drawing a permeate from the permeate side of the filter using a pump at a first flow rate, the permeate including a subset of the plurality of hydrogel particles.2. The method of claim 1 , wherein the pump is a syringe pump.3. The method of claim 1 , dispensing a buffer solution at a second flow rate to the stir cell.4. The method of claim 3 , wherein the first and second flow rate are approximately equal.5. The method of claim 1 , wherein the velocity of the permeate across the filter is in a range of 0.01 cm/min to 0.17 cm/min claim 1 , a range of 0.02 cm/min to 0.17 cm/min claim 1 , a range of 0.05 cm/min to 0.16 cm/min claim 1 , a range of 0.07 to 0.15 cm/min claim 1 , or a range of 0.08 cm/min to 0.15 cm/min.6. The method of claim 1 , further comprising:applying the permeate to a second stir cell, a retentate side of a second filter defining a lower surface of the second stir cell, the second filter having the retentate side and a permeate side; andwhile stirring within the second stir cell, drawing from the permeate side of the second filter using a second pump at a third flow ...

SPRAY DRIFT REDUCTION

Spray drift reductants for agrochemical formulations for use in spray drift reduction in agrochemical formulations which contain actives and/or micronutrients. The reductants are selected from alkoxylated polyol or polyamine which is optionally acyl terminated, and the formulation may optionally comprise non-ionic alkoxylate. There is also provided a method of making the formulation, and the use of the formulation in reducing spray drift on application of the agrochemical formulation to vegetation. 3. The formulation according to claim 2 , wherein Ris the residue of claim 2 , or a residue derived from a monosaccharide claim 2 , a disaccharide or a higher oligosaccharide.4. The formulation according to claim 2 , wherein Ris the residue of a monosaccharide selected from glucose claim 2 , fructose or sorbitol.5. The formulation according to claim 2 , wherein the oxyalkylene group AO is selected from oxyethylene claim 2 , oxypropylene claim 2 , oxybutylene claim 2 , or oxytetramethylene.6. The formulation according to claim 2 , wherein the value of the each parameter n is in the range from 2 to 50.7. The formulation according to claim 2 , wherein total number of alkylene oxide residues in general structure (I) (i.e. n×m) is in the range from 10 to 300.8. The formulation according to claim 2 , wherein where each Rindependently represents a residue of hydroxylalkyl and hydroxyalkenyl carboxylic acids of formula HO—X—COOH where X is a divalent saturated or unsaturated aliphatic radical containing at least 8 carbon atoms and no more than 20 carbon atoms claim 2 , and in which there are at least 4 carbon atoms directly between the hydroxyl and carboxylic acid groups.9. The formulation according to claim 8 , wherein the hydroxyalkyl carboxylic acid is 12-hydroxystearic acid.10. The formulation according to claim 1 , wherein the spray drift reductant is a liquid with a molecular weight ranging from 3 claim 1 ,000 to 8 claim 1 ,000.11. The formulation according to claim 1 , ...

Powdered Pouch And Method Of Making Same

Disclosed herein are water-soluble films and resulting packets including a water-soluble film coated by a powder, wherein the powder includes a mixture of a powdered lubricant and an active agent. Optionally, the active agent may be encapsulated, e.g. microencapsulated, for release of the active agent through mechanisms including, but not limited to, mechanical rupture, melt, ablation, dissolution, diffusion, biodegradation, or pH-controlled release. Active ingredients described include enzymes, oils, flavors, colorants, odor absorbers, fragrances, pesticides, fertilizers, activators, acid catalysts, metal catalysts, ion scavengers, bleaches, bleach components, fabric softeners and combinations thereof. Examples of packet fills include laundry detergents, bleach and laundry additives, fabric care, dishwashing, hard surface cleaning, beauty care, skin care, other personal care, and foodstuffs. 1. A water-soluble packet , comprising:a water-soluble film in the form of a packet; and a powdered lubricant and', 'an active agent, provided that when the active agent is a fragrance the fragrance is microencapsulated, wherein the powdered lubricant is not the same as the microcapsule., 'a powder coating on the film in the form of a packet, the powder coating comprising a mixture of'}2. The water-soluble packet of claim 1 , wherein the active agent is microencapsulated.3. The water-soluble packet according to claim 1 , wherein the powdered lubricant is selected from the group consisting of starches claim 1 , modified starches claim 1 , silicas claim 1 , siloxanes claim 1 , calcium carbonate claim 1 , magnesium carbonate claim 1 , clay claim 1 , talc claim 1 , silicic acid claim 1 , gypsum claim 1 , zeolites claim 1 , cylclodextrins claim 1 , calcium stearate claim 1 , zinc stearate claim 1 , alumina claim 1 , magnesium stearate claim 1 , alumina claim 1 , zinc oxide and combinations thereof.4. The water-soluble packet according to claim 3 , wherein the powdered lubricant is ...

WATER-SOLUBLE FILMS

Water-soluble films made from copolymers of butene-diol and vinyl alcohol, wherein the films have improved barrier properties (such as low transmission rates for oxygen and water vapor) as well as good solubility. The water-soluble films may form at least a portion of a water-soluble unit dose article, a flexible package, and/or a personal care product or products. 1. A water soluble unit dose article comprising:a compartment; anda film comprising one or more extruded layers comprising a polymeric material comprising a copolymer of vinyl alcohol and butene-diol;wherein the film has a crystallite size of about 10 Angstroms to about 35 Angstroms, when measured according to the Crystallite Size Test Method;wherein the copolymer has a degree of hydrolysis of about 85% to about 100%, when measured according to the Hydrolysis Test Method;wherein the film comprises about 8% to about 30%, by weight of the film, of a plasticizer;wherein the film forms at least a portion of the compartment; andwherein the compartment surrounds and encloses a composition.2. The article of claim 1 , wherein the film has a crystallite size of about 15 Angstroms to about 25 Angstroms claim 1 , when measured according to the Crystallite Size Test Method.3. The article of claim 1 , wherein the copolymer has a degree of hydrolysis of about 90% to about 100% claim 1 , when measured according to the Hydrolysis Test Method.4. The article of claim 1 , wherein the copolymer has a degree of hydrolysis of about 95% to about 100% claim 1 , when measured according to the Hydrolysis Test Method.5. The article of claim 1 , wherein the copolymer has a degree of hydrolysis of about 98% to about 100% claim 1 , when measured according to the Hydrolysis Test Method.6. The of claim 1 , wherein the copolymer is a terpolymer comprising:vinyl alcohol monomer units;vinyl acetate monomer units; andbutene diol monomer units.7. The article of claim 1 , wherein the film comprises about 8% to about 25% claim 1 , by weight of ...

Visible light-curable water-soluble chitosan derivative, chitosan hydrogel, and preparation method therefor

The present invention relates to a visible light-curable chitosan derivative, a hydrogel, and a preparation method therefor and, more specifically, to a visible light-curable glycol chitosan derivative which is cured by light in the visible light range and has wound healing ability, a hydrogel, and a preparation method therefor. A hydrogel obtained by cross-linkage of the visible light-curable glycol chitosan derivative according to the present invention using visible light has a wound healing effect per se, and further, a hydrogel obtained by cross-linkage in a combination of one or more growth factors has an excellent wound healing effect. In addition, a glycol chitosan hydrogel that can prevent the denaturation of contained drugs and growth factors due to the cross-linkage by visible light and is optimized for application to a wet dressing dosage form can be prepared.

Absorbent polymer and method of preparing the same

An absorbent polymer has an absorbency under pressure (AUL) ranging from 20 to 45 g/g; a phase angle (67 ) of swollen gel ranging from 3 to 30 degrees; and a decrease in phase angle ranging from 3 to 35%. Thereby, the absorbent polymer may have favorable gel elasticity under pressure after swelling, so as to reduce adhesion between swollen particles. Accordingly, even after absorbing the liquid to swell the absorbent polymer, the polymer may maintain excellent flow conductivity, thereby reducing a decrease in absorption ability of the absorbent polymer.

Coated polymer particles comprising a water-swellable polymer core and a sol-gel coating

The present invention relates to coated polymer particles comprising a water-swellable polymer core and an essentially continuous coating encapsulating the core. The coating comprises an oxide, hydroxide or oxide hydrate of silicon, aluminum, zirconium, tin or titanium. The polymer particles do not show instantaneous swelling, when contacted with water or a water-containing liquid, but show delayed water absorption after an appropriate period of time. The coated polymer particles may be used in oil fields, in mining, for construction chemical compositions or as carrier for active substances. The coated polymer particles are prepared by a suspension coating process or a fluidized bed coating process.

Process for producing superabsorbent polymer particles

The invention relates to a process for producing superabsorbent polymer particles, comprising surface postcrosslinking, classifying the surface postcrosslinked superabsorbent polymer particles, deagglomerating the separated oversize fraction using a roll crusher and recycling the disintegrated oversize fraction before or into the classification of the surface postcrosslinked superabsorbent polymer particles.

A Method for Preparing Superabsorbent Polymer

The present invention relates to a method for preparing a superabsorbent polymer having excellent absorption performance, and more specifically, to a method for preparing a superabsorbent polymer that can effectively inhibit the initiation of a polymerization reaction in a pipe, before being introduced into a polymerization reactor, thus preventing process trouble.

Water-absorbing polymer structure having improved permeability and absorption under pressure

The present invention relates to a process for the preparation of water-absorbing polymer structures, comprising the following process steps: i) providing an untreated, water-absorbing polymer structure; and ii) bringing the untreated, water-absorbing polymer structure into contact with a salt comprising a divalent or higher-valent cation of a metal and at least one organic base as anion. The invention relates also to the water-absorbing polymer structures obtainable by that process, to water-absorbing polymer structures, to a composite comprising a water-absorbing polymer structure and a substrate, to a process for the preparation of a composite, to the composite obtainable by that process, to chemical products, such as foams, molded articles and fibers comprising water-absorbing polymer structures or a composite, to the use of water-absorbing polymer structures or of a composite in chemical products and to the use of a salt in the treatment of the surface of water-absorbing polymer structures.

DEGRADABLE MATERIALS AND PACKAGING MADE FROM SAME

A water-soluble film, comprising a first water-soluble film, wherein the first water soluble film disintegrates in water within less than about 24 hours and dissolves in water within less than about 48 hours as measured by the MSTM-205 at 20° C. The disclosure provides a water-soluble film comprising a first water-soluble film that disintegrates in water within less than 24 hours and dissolves in water within less than 48 hours as measured by MSTM-205 at 20° C. The first water-soluble film optionally may be further characterized in that it does not disintegrate in water for at least about 1 hour and does not dissolve in water for at least about 1 hour as measured by MSTM-205 at 20° C. The disclosure further provides a water-soluble film comprising a first water-soluble film characterized in that the degradation and/or dissolution of the first water-soluble film is adapted to be activated by consumer handling. 1. A water-soluble film , comprising a first water-soluble film , wherein the first water soluble film disintegrates in water within less than about 24 hours and dissolves in water within less than about 48 hours as measured by the MSTM-205 at 20° C.2. The water-soluble film of claim 1 , wherein the first water soluble film does not disintegrate in water for at least about 1 hour and does not dissolve in water for at least about 1 hour as measured by the MSTM-205 at 20° C.3. A water-soluble film claim 1 , comprising a first water-soluble film claim 1 , wherein the first water soluble film is characterized in that the degradation or dissolution of the film is adapted to be activated by consumer handling.4. The water-soluble film of any one of the preceding claims claim 1 , wherein the first water-soluble film comprises a water soluble film-forming resin selected from the group consisting of polyvinyl alcohol claim 1 , modified polyvinyl alcohols claim 1 , polyacrylates claim 1 , water-soluble acrylate copolymers claim 1 , polyaminopropyl sulfonic acid and salts ...

GAS BARRIER FILM AND PACKAGING MATERIAL

A gas barrier film includes a first base material film made of a plastic material and a coating layer formed on one of surfaces of the first base material film, the coating layer contains a watersoluble polymer and a water-swelling mica, the solid content ratios of the water-swelling mica in 5 a total solid content of the coating layer are within approximate ranges indicated from 20 mass % to 50 mass %, the mean area diameter of the water-swelling mica is within approximate ranges indicated from 0.5 μm to 5 μm, and the thickness of the coating layer is within approximate ranges indicated from 0.1 μm to 1 μm. 1. A gas barrier film comprising:a first base material film made of a plastic material; anda coating layer formed on one of surfaces of the first base material film,wherein the coating layer contains a water-soluble polymer and a water-swelling mica,wherein the solid content ratios of the water-swelling mica in a total solid content of the coating layer are within approximate ranges indicated from 20 mass % to 50 mass %,wherein the mean area diameter of the water-swelling mica is within approximate ranges indicated from 0.5 μm to 5 μm, andwherein the thickness of the coating layer is within approximate ranges indicated from 0.1 μm to 1 μm.2. The gas barrier film of claim 1 ,wherein the water-soluble polymer is polyvinyl alcohol resin andwherein the degree of polymerization of the polyvinyl alcohol resin is within approximate ranges indicated from 1,100 to 2,300.3. The gas barrier film of claim 1 ,wherein the aspect ratio of the water-swelling mica is within approximate ranges indicated from 10 to 200.4. The gas barrier film of claim 1 ,wherein the mean area diameter of the water-swelling mica is within approximate ranges indicated from 1.5 μm to 2.5 μm andwherein the thickness of the coating layer is within approximate ranges indicated from 0.15 μm to 0.7 μm.5. The gas barrier film of claim 1 , further comprising an ink layer on a surface of the coating layer.6. ...

HYDROGEL POLYMERS

Hydrogel polymers for use, for example, in contact lenses, drug delivery systems and/or stimulating devices. In some embodiments, the hydrogel formulations comprise diluent(s) to improve the dehydration characteristics and mechanical properties of a hydrogel polymer formulation compared to those without diluent(s). The diluent(s) include, for example, water and hydrophilic diluent(s) such as humectants.

Modified polyvinyl alcohol and water-soluble film

The present invention provides: a water-soluble film that is superior in cold water solubility and in practical properties such as strength and stiffness and that can resist deterioration in various properties such as chemical resistance over time; and a modified polyvinyl alcohol used for the water-soluble film. The present invention relates to a modified polyvinyl alcohol containing 0.05 to 10 mol % of a monomer unit having two carboxyl groups. In 1 H-NMR spectroscopy of the modified polyvinyl alcohol, an integral (X) from 6.8 to 7.2 ppm and an integral (Y) from 5.3 to 5.5 ppm satisfy the following expression: 0.60≦ X /( X+Y )<1.0.

Composite material for absorbent article, and method for manufacturing said material

A composite material for an absorbent article and a method for manufacturing said composite material, said composite material being obtained by causing an absorbent material to adhere by electrostatic interaction to a substrate material, the surface of the absorbent material being positively or negatively charged in a prescribed solvent selected from among a nonpolar organic solvent, a polar organic solvent, and a water/polar organic solvent mixture; and the surface of the composite material being charged to an electrical charge opposite to that of the surface of the substrate material, in the prescribed solvent. The substrate material has a fiber substrate or a plastic substrate, and a polyelectrolyte layer provided on the surface layer; and/or the absorbent material has an absorbent-particle substrate or an absorbent fiber substrate, and a polyelectrolyte layer provided on the surface layer.

LOW PROTEIN PERCENTAGE GELLING COMPOSITIONS

Described herein are low protein concentration gelling compositions comprising keratin proteins. 1. A composition comprising keratose , kerateine or a combination thereof , wherein said composition forms a hydrogel at a protein concentration of less than 20%.2. The composition of claim 1 , wherein said composition is substantially free of gamma-keratose or gamma-kerateine.3. The composition of claim 1 , wherein said composition is substantially free of biomaterial adjuncts or crosslinking agents.4. The composition of claim 1 , wherein said protein concentration is 15% or less.5. The composition of claim 1 , wherein said protein concentration is 10% or less.6. The composition of claim 1 , wherein said hydrogel is formed between about 25° C. and about 37° C.7. The composition of claim 1 , wherein said hydrogel is stable at about 25° C. to about 37° C.8. The composition of claim 1 , wherein said hydrogel comprises at least 90% or more keratose.9. The composition of claim 8 , wherein said hydrogel is substantially free of kerateine.10. The composition of claim 8 , wherein said hydrogel is substantially free of disulfide bonds.11. The composition of claim 1 , wherein said hydrogel comprises at least 90% or more kerateine.12. The composition of claim 10 , wherein said hydrogel is substantially free of keratose.13. The composition of any of - claim 10 , wherein said keratose claim 10 , kerateine or combination thereof is derived from a human keratin source.14. The composition of claim 13 , wherein said human keratin source is hair.15. A method of forming a hydrogel comprising:a. Providing keratose, kerateine, or a combination thereof, at a concentration of less than 20% weight to volume in an aqueous medium;b. Mixing said keratose, kerateine, or a combination thereof in said aqueous medium; andc. Allowing the hydrogel to form.16. The method of claim 15 , wherein said keratose claim 15 , kerateine claim 15 , or a combination thereof have previously been lyophilized.17. The ...

RECYCLED FIBER AND RECYCLED FIBER MOLDING

The present invention aims to provide recycled fibers having a low dirt content and excellent appearance and strength properties derived from sanitary products. Recycled fibers having a superabsorbent polymer (SAP) content of less than 10% obtained by subjecting a sanitary product containing a cellulose pulp to a recycling process per se have good appearance, and moldings prepared by using the recycled fibers also have excellent appearance and strength properties. Further, the recycled fibers preferably have a dirt area fraction of 50,000 mm/mor less when determined by a staining assay using cobalt (II) chloride hexahydrate, and a Canadian standard freeness of 600 ml or more. 1. A recycled fiber obtained by subjecting a sanitary product containing a cellulose pulp to a recycling process , which has a superabsorbent polymer (SAP) content of less than 5%.2. The recycled fiber of claim 1 , which has a dirt area fraction of 50 claim 1 ,000 mm/mor less when determined by a staining assay using cobalt (II) chloride hexahydrate on a handsheet having a basis weight of 60 g/mprepared according to JIS P 8209.3. The recycled fiber of claim 1 , which has a dirt area fraction of 200 mm/mor less when determined by a dirt assay on a handsheet having a basis weight of 60 g/mprepared according to JIS P 8209.4. The recycled fiber of claim 1 , which has a Canadian standard freeness of 600 ml or more when determined according to JIS P 8121:1995.5. The recycled fiber of claim 1 , which has a length weighted average fiber length of 0.7 mm or more.6. The recycled fiber of claim 1 , which has a superabsorbent polymer content of 1% or less.7. The recycled fiber of claim 1 , which has a dirt area fraction of 1 claim 1 ,000 mm/mor less when determined by a staining assay using cobalt (II) chloride hexahydrate on a handsheet having a basis weight of 60 g/mprepared according to JIS P 8209.8. The recycled fiber of for use in construction materials claim 1 , paperboards claim 1 , cushioning ...

Encapsulated cleaning composition

An encapsulated cleaning composition includes a core cleaning composition and a water-soluble film disposed about the core cleaning composition. The core cleaning composition itself includes an ionic liquid, water present in an amount of from 10 to 50 parts by weight per 100 parts by weight of the core cleaning composition, and at least one of a chelant, an enzyme, and a surfactant. The water-soluble film has a disintegration time of less than 90 seconds as determined at 40° C. using distilled water according to MSTM 205, when disposed about the core cleaning composition. The water-soluble film also remains stable for 6 months at 25° C., when disposed about the core cleaning composition.

Water-absorbent resin particles and method for producing same

Provided is a method for producing water-absorbent resin particles, which is capable of improving the gel strength for the purpose of achieving a good balance between the absorption under load and the rate of liquid permeation through gel. The present invention is a method for producing water-absorbent resin particles, which is characterized by comprising a step wherein a monomer composition containing a water-soluble vinyl monomer (a1) and/or a vinyl monomer (a2) that turns into a water-soluble vinyl monomer (a1) by means of hydrolysis and a crosslinking agent (b) is polymerized in the presence of at least one organic main group element compound selected from the group consisting of organic iodine compounds, organic tellurium compounds, organic antimony compounds, and organic bismuth compounds.

HYDROPHILIC GELS FROM POLYALKYLETHER-BASED PHOTOINITIATORS

The invention provides a method for the manufacture of a catheter comprising a hydrophilic gel. The method comprising the steps of combining a polymeric photoinitiator of the general formula (I): 2. The method according to claim 1 , wherein R=—CHCH— claim 1 , in which one or more H atoms may be replaced by A.3. The method according to claim 1 , wherein R=—CHCH— claim 1 , in which one or more H atoms may be replaced by A.4. The method according to claim 1 , wherein Rand R=—CHCH— claim 1 , in which one or more H atoms may be replaced by Aor A claim 1 , respectively.5. The method according to claim 1 , wherein R=OH.6. The method according to claim 1 , wherein R=H.7. The method according to claim 1 , wherein A claim 1 , A claim 1 , Aand Aare identical or different photoinitiator moieties selected from the group consisting of benzoin ethers claim 1 , phenyl hydroxyalkyl ketones claim 1 , phenyl aminoalkyl ketones claim 1 , benzophenones claim 1 , thioxanthones claim 1 , xanthones claim 1 , acridones claim 1 , anthraquinones claim 1 , fluorenones claim 1 , dibenzosuberones claim 1 , benzils claim 1 , benzil ketals claim 1 , α-dialkoxy-acetophenones claim 1 , α-hydroxy-alkyl-phenones claim 1 , α-amino-alkyl-phenones claim 1 , acyl-phosphine oxides claim 1 , phenyl ketocoumarins claim 1 , silane claim 1 , maleimides claim 1 , and derivatives thereof.8. The method according to claim 1 , wherein A claim 1 , A claim 1 , Aand Aare identical or different photoinitiator moieties selected from the group consisting of 2-hydroxy-2-methyl-propiophenone claim 1 , benzophenone claim 1 , thioxanthone claim 1 , benzil claim 1 , anthraquionone claim 1 , camphorquinone claim 1 , benzoin ether claim 1 , acylphosphine oxide claim 1 , silane claim 1 , and derivatives thereof.9. The method according to claim 1 , wherein A claim 1 , A claim 1 , Aand Aare identical photoinitiator moieties.10. The method according to claim 1 , wherein A claim 1 , A claim 1 , Aand Aare at least two different ...

Articles Comprising Water-Soluble Polyvinyl Alcohol Film with Plasticizer Blend and Related Methods

Disclosed herein are articles that include water-soluble films, where the water-soluble films include a polyvinyl alcohol (PVOH) polymer and a combination of at least three plasticizers. The combination of plasticizers includes dipropylene glycol as a first plasticizer, a sugar alcohol such as sorbitol as a second plasticizer, and a polyol such as glycerin as a third plasticizer. When the PVOH polymer and plasticizers are blended in particular proportions and/or selected with regard to various criteria related to physical and chemical film properties, the resulting water-soluble film formed from the PVOH resin blend exhibits beneficial combinations of aged tensile strength, aged melting transition delta elevation, aged adhesion value, and/or resistance to seal peeling, which provide strong film seals that retain their water-solubility characteristics. 1. An article comprising: a polyvinyl alcohol (PVOH) polymer, the PVOH polymer comprising a PVOH homopolymer that includes vinyl alcohol monomer units and optionally vinyl acetate monomer units;', 'dipropylene glycol as a first plasticizer;', 'a sugar alcohol as a second plasticizer, wherein the sugar alcohol is selected from the group consisting of isomalt, maltitol, sorbitol, xylitol, erythritol, adonitol, dulcitol, pentaerythritol, and mannitol; and', 'a polyol as a third plasticizer, the third plasticizer being selected from the group consisting of glycerin, diglycerin, ethylene glycol, diethylene glycol, triethyleneglycol, tetraethylene glycol, polyethylene glycols up to 400 MW, neopentyl glycol, propylene glycol, 2-methyl-1,3-propanediol, trimethylolpropane, and polyether polyols; and, 'a. a water-soluble film, wherein the water-soluble film comprisesb. a household care composition.2. (canceled)3. The article of claim 1 , wherein the sugar alcohol is sorbitol.4. (canceled)5. The article of claim 1 , wherein the polyol is glycerin.6. The article of claim 1 , wherein the water-soluble film comprises:the polyvinyl ...

Water-soluble film and chemical agent package

A water-soluble film that shows a small change between a film hardness at the time of its normal state and a film hardness at high temperature at the time of its forming or immediately after the forming, that has satisfactory formability, and that is excellent in pinhole resistance and bag breakage resistance includes: a polyvinyl alcohol resin (A) ; and a plasticizer (B), wherein the plasticizer (B) contains a polyhydric alcohol (b1) having a melting point of 80° C. or more, a polyhydric alcohol (b2) having a melting point of 50° C. or less, and a polyhydric alcohol (b3) having a melting point of more than 50° C. and less than 80° C., and wherein a content ratio (X) of the polyhydric alcohol (b3) with respect to a total amount of the polyhydric alcohols (b1), (b2), and (b3) is 15 wt. % or less.

METHOD FOR BELCHING WATER FROM SWOLLEN SUPERABSORBENT POLYMERS AND METHOD FOR RECYCLING SANITARY ABSORBENT ARTICLES USING THE SAME

The present invention relates to a method for removing water from swollen superabsorbent polymers in a gel state, and a method for recycling sanitary absorbent articles using the same. According to the method of the present invention, water is removed from swollen superabsorbent polymers by immersing swollen superabsorbent polymers in a gel state into a composition wherein sea water that is readily available and calcium chloride that is readily available at low cost are mixed for a specified period of time. The method makes it possible to easily and economically remove water from swollen SAPs in a gel state. Thus, the method provides an economical and environmentally-friendly means for recycling sanitary absorbent articles comprising an absorbent that consists of SAP and cellulose pulp, after being used for absorbing human waste. 1. A method for belching water from swollen superabsorbent polymers (SAPs) comprising:immersing swollen SAP in a gel state into a composition for removing moisture, wherein sea water and 0.5 to 3% by weight of calcium chloride based on the weight of sea water are mixed for 10 minutes to 4 hours.2. The method according claim 1 , wherein the swollen SAP in a gel state absorbs 40 to 1 claim 1 ,000 g of moisture per 1 g of SAP.3. The method according to claim 1 , wherein the sea water is natural sea water that does not undergo further processing or purification claim 1 , or artificial sea water.4. The method according to claim 1 , wherein the sea water comprises 2.0 to 4.0% by weight of salts based on the total weight of sea water.5. The method according to claim 4 , wherein the sea water comprises 1.5 to 3.1% by weight of sodium chloride and 0.4 to 0.8% by weight of alkaline earth ion claim 4 , based on the total weight of sea water.6. The method according to claim 1 , wherein the composition for removing moisture has a pH ranging from 7.0 to 8.0.7. A method for recycling sanitary absorbent articles wherein moisture comprising human waste is ...

POWDERED POUCH AND METHOD OF MAKING SAME

Disclosed herein are water-soluble films and resulting packets including a water-soluble film coated by a powder, wherein the powder includes a mixture of a powdered lubricant and an active agent. Optionally, the active agent may be encapsulated, e.g. microencapsulated, for release of the active agent through mechanisms including, but not limited to, mechanical rupture, melt, ablation, dissolution, diffusion, biodegradation, or pH-controlled release. Active ingredients described include enzymes, oils, flavors, colorants, odor absorbers, fragrances, pesticides, fertilizers, activators, acid catalysts, metal catalysts, ion scavengers, bleaches, bleach components, fabric softeners and combinations thereof. Examples of packet fills include laundry detergents, bleach and laundry additives, fabric care, dishwashing, hard surface cleaning, beauty care, skin care, other personal care, and foodstuffs. 1. A water-soluble packet , comprising: a powdered lubricant and', 'an active agent, provided that when the active agent is a fragrance the fragrance is microencapsulated., 'a water-soluble film in the form of a packet and coated by a powder, the powder comprising a mixture of'}2. The water-soluble packet of claim 1 , wherein the active agent is microencapsulated.3. The water-soluble packet according to claim 1 , wherein the powdered lubricant is selected from the group consisting of starches claim 1 , modified starches claim 1 , silicas claim 1 , siloxanes claim 1 , calcium carbonate claim 1 , magnesium carbonate claim 1 , clay claim 1 , talc claim 1 , silicic acid claim 1 , gypsum claim 1 , zeolites claim 1 , cylclodextrins claim 1 , calcium stearate claim 1 , zinc stearate claim 1 , alumina claim 1 , magnesium stearate claim 1 , alumina claim 1 , zinc oxide and combinations thereof.4. The water-soluble packet according to claim 3 , wherein the powdered lubricant is kaolin.5. The water-soluble packet according to claim 1 , wherein the active agent is selected from the group ...

Super absorbent polymer and method for preparing same

The present invention relates to a super absorbent polymer exhibiting more improved liquid permeability while maintaining excellent absorption performance, and a method for producing the same. The super absorbent polymer comprises: a base polymer powder comprising a first cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second cross-linked polymer in which the first crosslinked polymer is further cross-linked through an alkylene carbonate having two to five carbon atoms. The super absorbent polymer satisfies predetermined physical properties.

ARTICLES COMPRISING MULTICOMPONENT FIBERS

An article is provided comprising a multicomponent fiber having a shaped cross section, wherein the multicomponent fiber comprises: 1. An article comprising a multicomponent fiber having a shaped cross section , said multicomponent fiber comprising:(A) at least one water dispersible polymer; and(B) a plurality of domains comprising one or more water nondispersible polymers, wherein said domains are substantially isolated from each other by said water dispersible polymer intervening between said domains; andwherein said water dispersible polymer is present at the perimeter of the outside cross-section of said multicomponent fiber in a proportion of not greater than 55% water dispersible polymer.2. The article of wherein said article is a yarn claim 1 , woven fabric claim 1 , knitted fabric claim 1 , braided fabric claim 1 , synthetic fabric claim 1 , nonwoven fabric claim 1 , or combination thereof.3. The article according to wherein said yarn is a spun yarn or filament yarn.4. The article according to wherein said yarn is selected from the group consisting of a plied yarn claim 2 , a covered yarn claim 2 , and twisted yarn.5. The article according to wherein said yarn further comprises at least one other fiber.6. The article according to wherein said other fiber is selected from the group consisting of cotton claim 4 , linen claim 4 , silk claim 4 , sisal/grass claim 4 , leather claim 4 , acetate claim 4 , acrylic claim 4 , modacrylic claim 4 , polylactide claim 4 , saran claim 4 , cellulosic fiber pulp claim 4 , inorganic fibers claim 4 , polyester fibers claim 4 , nylon fibers claim 4 , polyolefin fibers claim 4 , rayon fibers claim 4 , lyocell fibers claim 4 , cellulose ester fibers claim 4 , post consumer recycled fibers claim 4 , elastomeric fibers claim 4 , and combinations thereof.7. The article according to wherein said other fiber is another multicomponent fiber.8. The article of wherein said woven fabric claim 2 , knitted fabric claim 2 , braided fabric ...

Multicomponent fibers

A multicomponent fiber having a shaped cross section is provided in this invention. The multicomponent fiber comprises: (A) at least one water dispersible polymer; and (B) a plurality of domains comprising one or more water non-dispersible polymers, wherein said domains are substantially isolated from each other by said water dispersible polymer intervening between said domains; and wherein said water dispersible polymer is present at the perimeter of the outside cross-section of said multicomponent fiber in a proportion of not greater than 55% water dispersible polymer. Articles produced from the multicomponent fiber are also provided.

Process of making multicomponent fibers

A process for making a multicomponent fiber is disclosed. The process comprises extruding at least one water dispersible polymer to create a first polymer flow, extruding at least one water non-dispersible synthetic polymer to create a second polymer flow path, directing the resulting multiple polymer flows into a spinneret having a shaped cross section with a plurality of distribution flow paths, and combining the flow paths together to form a multicomponent fiber having a shaped cross section, wherein the multicomponent fiber comprises: (A) at least one water dispersible polymer; and (B) a plurality of domains comprising one or more water non-dispersible polymers, wherein the domains are substantially isolated from each other by the water dispersible polymer intervening between the domains; and wherein the water dispersible polymer is present at the perimeter of the outside cross-section of the multicomponent fiber in a proportion of no greater than 55% water dispersible polymer.

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 super absorbent polymer, and super absorbent polymer

The present invention relates to a method for preparing a super absorbent polymer exhibiting improved liquid permeability, gel strength, absorption rate and the like while maintaining excellent absorption performance. The method for preparing the super absorbent polymer comprises the steps of: carrying out a crosslinking polymerization of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups in the presence of an internal crosslinking agent to form a hydrogel polymer including a cross-linked polymer; drying, pulverizing, and classifying the hydrogel polymer to form a base polymer powder; and surface-crosslinking the base polymer powder by using a surface crosslinking liquid containing a surface crosslinking agent of an alkylene carbonate having 2 to 5 carbon atoms, in the presence of hydrophobic silica particles having a water-contact angle of more than 10° and 150° or less and hydrophilic silica particles having a water-contact angle of 10° or less.

POLYMER GEL AND PREPARATION METHOD THEREFOR

When a polymer gel has excellent mechanical strength and an ability to maintain surface wetness for a longer time, the polymer gel may be very widely applied to a variety of fields. The present disclosure provides example embodiments of a polymer gel having excellent mechanical strength and an ability to maintain surface wetness for a longer time. Further, the present disclosure provides example embodiments of a method of preparing the polymer gel. 1. A polymer gel comprising a polymeric three-dimensional network structure , wherein the polymeric three-dimensional network structure comprises a solvent holding pore and a solvent exuding pore ,the solvent exuding pore has a larger size than the solvent holding pore, andthe solvent exuding pore exudes a solvent comprised in the solvent exuding pore to at least one surface of the polymer gel when mechanical energy is applied to the polymer gel.2. The polymer gel of claim 1 , wherein the solvent exuding pore has a pore size of 3 mm or less.3. The polymer gel of claim 1 , wherein the solvent exuding pore has a pore size of 0.5 mm or less.4. The polymer gel of claim 1 , wherein the solvent exuding pore has a pore size of 0.5 μm or more.5. The polymer gel of claim 1 , wherein the solvent exuding pore has a pore size of 2 μm or more.6. The polymer gel of claim 1 , wherein work required for elongation of the polymer gel is 3 claim 1 ,000 J/m3 or more claim 1 , as measured in a swelling state attained by swelling the polymer gel in a solvent until equilibrium.7. The polymer gel of claim 1 , wherein the polymer gel is a hydrogel comprising water as a solvent.8. The polymer gel of claim 1 , wherein the mechanical energy is at least one of a compressive force and ultrasonic waves.9. The polymer gel of claim 1 , wherein the polymeric three-dimensional network structure has an interpenetrating network structure of a plurality of polymeric three-dimensional network structures which are entangled with each other.10. The polymer gel ...

Powdered Pouch And Method Of Making Same

Disclosed herein are water-soluble films and resulting packets including a water-soluble film coated by a powder, wherein the powder includes a mixture of a powdered lubricant and an active agent. Optionally, the active agent may be encapsulated, e.g. microencapsulated, for release of the active agent through mechanisms including, but not limited to, mechanical rupture, melt, ablation, dissolution, diffusion, biodegradation, or pH-controlled release. Active ingredients described include enzymes, oils, flavors, colorants, odor absorbers, fragrances, pesticides, fertilizers, activators, acid catalysts, metal catalysts, ion scavengers, bleaches, bleach components, fabric softeners and combinations thereof. Examples of packet fills include laundry detergents, bleach and laundry additives, fabric care, dishwashing, hard surface cleaning, beauty care, skin care, other personal care, and foodstuffs. 1. A water-soluble packet , comprising:a water-soluble film in the form of a packet; and a powdered lubricant and', 'an active agent, provided that when the active agent is a fragrance the fragrance is microencapsulated in a wax, stearic acid, stearyl alcohol, glyceryl stearates, or polymeric microcapsule,', 'wherein the powdered lubricant is not the same as the microcapsule and the active agent is selected from the group consisting of enzymes, oils, flavors, colorants, pesticides, fertilizers, activators, acid catalysts, metal catalysts, ion scavengers, bleaches, bleach components, fabric softeners or combinations thereof., 'a powder coating on the film in the form of a packet, the coating consisting of a powder comprising'}2. The water-soluble packet of claim 1 , wherein the active agent is microencapsulated in a wax claim 1 , stearic acid claim 1 , stearyl alcohol claim 1 , glyceryl stearates claim 1 , or polymeric microcapsule.3. The water-soluble packet according to claim 1 , wherein the powdered lubricant is selected from the group consisting of starches claim 1 , ...

POLYMER FILMS AND DETERGENT PACKETS CONTAINING THEM

Provided is a water dispersible polymer film that is useful as an encasing material for detergent packets. The water dispersible polymer film comprises: a polyvinyl alcohol substrate; and a barrier layer coated on at least one surface of the substrate, each barrier layer independently comprising (a) a first copolymer that is an at least partially neutralized maleic anhydride-C2-C8 olefin copolymer or its maleic acid counterpart; or (b) a second copolymer that is an at least partially neutralized ethylene (meth)acrylic acid copolymer, or (c) a mixture of the first copolymer and the second copolymer. 1. A water dispersible polymer film comprising:a polyvinyl alcohol substrate; and{'sub': 2', '8, 'a barrier layer coated on at least one surface of the substrate, each barrier layer independently comprising (a) a first copolymer that is an at least partially neutralized maleic anhydride-C-Colefin copolymer or its maleic acid counterpart; or (b) a second copolymer that is an at least partially neutralized ethylene (meth)acrylic acid copolymer, or (c) a mixture of the first copolymer and the second copolymer;'}wherein the first copolymer is an at least partially neutralized maleic acid-isobutylene copolymer.2. (canceled)3. The polymer film of claim 1 , wherein the second copolymer is an at least partially neutralized ethylene acrylic acid copolymer.4. The polymer film of claim 1 , wherein the weight ratio of the first copolymer to the second copolymer is from 10:1 to 1:4.5. The polymer film of claim 1 , wherein the substrate has a thickness ranging from 25 to 500 microns claim 1 , and each barrier layer independently has a thickness ranging from 0.5 to 25 microns.6. A detergent packet comprising a detergent formulation encased in the water dispersible polymer film of .7. The detergent packet of wherein the detergent formulation contains at least 20 weight percent of water claim 6 , based on the total weight of the detergent formulation. This invention relates generally to ...

LOW PROTEIN PERCENTAGE GELLING COMPOSITIONS

Described herein are low protein concentration gelling compositions comprising keratin proteins. 1. A composition comprising keratose , kerateine or a combination thereof , wherein said composition forms a hydrogel at a protein concentration of less than 20%.2. The composition of claim 1 , wherein said composition is substantially free of gamma-keratose or gamma-kerateine.3. The composition of claim 1 , wherein said composition is substantially free of biomaterial adjuncts or crosslinking agents.4. The composition of claim 1 , wherein said protein concentration is 15% or less.5. The composition of claim 1 , wherein said protein concentration is 10% or less.6. The composition of claim 1 , wherein said hydrogel is formed between about 25° C. and about 37° C.7. The composition of claim 1 , wherein said hydrogel is stable at about 25° C. to about 37° C.8. The composition of claim 1 , wherein said hydrogel comprises at least 90% or more keratose.9. The composition of claim 8 , wherein said hydrogel is substantially free of kerateine.10. The composition of claim 8 , wherein said hydrogel is substantially free of disulfide bonds.11. The composition of claim 1 , wherein said hydrogel comprises at least 90% or more kerateine.12. The composition of claim 10 , wherein said hydrogel is substantially free of keratose.13. The composition of any of claim 1 , wherein said keratose claim 1 , kerateine or combination thereof is derived from a human keratin source.14. The composition of claim 13 , wherein said human keratin source is hair.15. A method of forming a hydrogel comprising:a. providing keratose, kerateine, or a combination thereof, at a concentration of less than 20% weight to volume in an aqueous medium;b. mixing said keratose, kerateine, or a combination thereof in said aqueous medium; andc. allowing the hydrogel to form.16. The method of claim 15 , wherein said keratose claim 15 , kerateine claim 15 , or a combination thereof have previously been lyophilized.17. The ...

Geopolymeric foam comprising triple-layered structure for protecting a substrate

A structure for protecting a substrate. The structure comprises an inner tie coat layer which can bond to the substrate, a geopolymer foam layer, and an outer protective layer. The geopolymer foam layer is the reaction product of a mixture comprising an aluminosilicate source, an alkali activator, reinforcing fibres, and a plurality of microparticles.

Method for producing super absorber particles

A process for producing superabsorbent particles, comprising drying of a polymer gel, removal of incompletely dried polymer particles, comminution of the polymer particles removed, recycling of the comminuted polymer particles and storage of the recycled polymer particles.

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 resin particles for water-stopping tape, and water-stopping tape containing same

An object of the present invention is to provide absorbent resin particles for a water-stopping tape which are superior in absorption rate even when their average particle size is smaller or when their particle size distribution is wider. The present invention relates to absorbent resin particles for a water-stopping tape comprising a crosslinked polymer (A1) comprising a water-soluble vinyl monomer (a1) and/or a hydrolyzable vinyl monomer (a2) and a crosslinking agent (b) as essential constitutional units, wherein a hydrophobic substance (C) is present inside the absorbent resin particles in an amount of from 0.01 to 10.0% by weight relative to the weight of (A1) and (C) is present on the surface of the absorbent resin particles in an amount of from 0.001 to 1.0% by weight relative to the weight of (A1).

Aqueous dispersion, its production method, and its use

Aqueous dispersions including at least one thermoplastic resin; at least one dispersing agent; and water; wherein the dispersion has a pH of less than 12 are disclosed along with dispersions including at least one thermoplastic resin; at least one dispersing agent; and water wherein the dispersion has a volume average particle size of less than about 5 μm. Some dispersions include less than about 4 percent by weight of the dispersing agent based on the weight of the thermoplastic resin. Other dispersions include at least one propylene-rich alpha-olefin interpolymer; at least one dispersing agent; and water. Methods of making such dispersions are also described.

Aqueous dispersion

An aqueous dispersion comprising (A) at least one thermoplastic resin; (B) at least one dispersing agent; (C) water; and optionally (D) a neutralizing agent; wherein the dispersion has a pH of less than 12, and wherein the thermoplastic resin is selected from homopolymers and copolymers of ethylene, thermoplastic polyesters and combinations of two or more thereof.

Method for producing an aqueous dispersion

A method for producing an aqueous dispersion, comprising melt kneading at least one thermoplastic resin and at least one dispersing agent, to produce a melt-kneaded product, adding a basic substance to said melt-kneaded product, and further melt kneading and diluting the resulting mixture to form the aqueous dispersion, wherein the dispersion has an average particle size of less than about 5µm.

Actinically-crosslinkable siloxane-containing copolymers

The invention provide a class of actinically-crosslinkable silicone-containing prepolymers obtained by functionalizing an intermediary copolymer to have two or more thiol or ethylenically-unsaturated groups covalently attached thereto, wherein the intermediary copolymer is an atom-transfer radical polymerization (ATRP) product of a reactive mixture comprising a polysiloxane ATRP macroinitiator and at least one hydrophilic vinylic monomer. The present invention is also related to silicone hydrogel contact lenses made from a prepolymer of the invention and methods for making the contact lenses in a cost-effective way and with high consistency and high fidelity to the original lens design.

Water-absorbing, cross-linked polymerizates in the form of a foam, a method for the production thereof, and their use

The invention relates to water-absorbing, cross-linked polymerizates which are in the form of a foam and which can be obtained by (I) foaming a polymerizable aqueous mixture which contains: (a) acid groups containing monoethylenically unsaturated monomers which are optionally neutralized; (b) optional other monoethylenically unsaturated monomers; (c) cross-linking agents; (d) initiators; (e) 0.1 to 20 wt. % of at least one surface active agent; (f) optionally at least one dissolving mediator; and (g) optional thickeners, foam stabilizers, polymerization chain transfer agents, fillers and/or cell nucleating agents. Fine bubbles of a gas which is inert against radicals causes foaming by dispersion in the polymerizable aqueous mixture. The inventive polymerizates can also be obtained by (II) polymerizing the foamed mixture by forming a hydrogel which is in the form of a foam, whereby at least 20 mol % of the monomers (a) containing acid groups are neutralized with tertiary alkanolamines and/or the free acid groups of the hydrogel in the form of a foam are neutralized with at least one alkanolamine to at least 20 mol % after the polymerization, and the water content of the polymerizate which is in the form of a foam is set at 1 to 60 wt. %. The invention additionally relates to a method for producing the inventive polymerizates and to the utilization thereof in sanitary articles which are used for absorbing body fluids and in bandaging material used for covering wounds.

WATER ABSORBING AGENT

Method for production of fluid stable aggregate

A method for the production of a fluid stable aggregate, which comprises mixing (A) 100 parts by weight of an absorbent resin powder possessing a carboxyl group, (B) 0.01 to 30 parts by weight of a cross-linking agent, and (C) 0 to 50 parts by weight of water, and (D) 0 to 60 parts by weight of a hydrophilic organic solvent in a high-speed stirring type mixer which is provided with an inner surface formed substantially of a substrate (I) possessing a contact angle of not less than about 60° with respect to water and a heat distortion point of not lower than about 70°C under the stirring condition of not less than 600 m/min of a peripheral speed of a leading-end of a stirring blade and thereafter completing reaction of said absorbent resin powder (A) with said cross-linking agent (B) under the condition that total kinetic energy F added to a mixture during the reaction is satisfied by the following equation: 0 ≦ F ≦ 36,000 joule/kg wherein the kinetic energy Fa per minute added during the reaction is not more than 600 joule/kg.

Process for post-crosslinking of a water absorbing polymer surface with a cyclic urea useful in foams, fibers, films, cables, especially sealing materials, liquid absorbing hygiene articles, packaging materials, and soil additives

A process for post-crosslinking of part of a surface of a water absorbing polymer in which the polymer is brought into contact with a post-crosslinker solution at a temperature of 50-300[deg]C, where the post-crosslinker is a dialkanolamide of a polycarboxylic acid. An independent claim is included for a post-crosslinked water absorbing polymer obtained as above and below.

Patent DE4020780C1

A powdery, water-insoluble, reticulated resin that absorbs aqueous or serous liquids, as well as blood, is composed of (a) 55-99.9 % by weight of polymerized, insaturated, polymerizable, acid-group containing monomers, of which at least 25 mol. % are neutralized; (b) 0-40 % by weight of polymerized insaturated monomers that can be copolymerized with (a); (c) 0.1-5.0 % by weight of a cross-linking agent and (d) 0-30 % by weight of a water-soluble polymer, the weight percentages of (a) to (d) refering to the water-free polymer. This polymer is characterized by the fact that the resin powder is coated with 0.1 to 5 % by weight of an alkylene carbonate, referring to the resin powder, and is heated up to a temperature between 150 and 300 DEG C. A process for producing this polymer is also disclosed, as well as its use in sanitary articles such as diapers and the like and in absorbent structures composed of hydrophilic fibres and an absorbent resin.

Water absorbent polymers, surface crosslinked using bis-2-oxazolidinone and/or poly-2-oxazolidinones

Water absorbent polymers are surface crosslinked using bis-2-oxazolidinone and/or poly-2-oxazolidinones. A process for the surface post cross-linking of water absorbent polymers is claimed by treatment of the polymer with a surface post cross-linking solution and during or after the treatment, post cross-linking at increased temperature followed by drying. The cross-linking agent is a bis-2-oxazolidinone and/or a poly-2-oxazolidinone containing structural units of formula (1) dissolved in an inert solvent. R<1> = 1-18C alkylene, alkenylene, 5-8C cycloalkylene phenylene, naphthylene, anthracenylene, optionally substituted with a hydrocarbon or a 6-18C arylene; R<2> = 1-18C alkylene; n = 1-50 An Independent claim is included for the resulting treated polymer.

Process for post-crosslinking hydrogels with 2-oxo-tetrahydro-1,3-oxazines

The invention relates to a method for the secondary cross-linking of gels or surfaces of water-absorbing polymers by treating the polymer with a surface secondary cross-linking agent and subsequently subjecting it to a secondary cross-linking reaction during or after the treatment by raising the temperature and drying the polymer. According to the invention, the cross-linking agent is a compound of formula (I), wherein R<1> is hydrogen, C1-C4 alkyl, C1-C4 hydroxyalkyl, trialkylsilyl or acetyl and R<2>, R<2'>, R<3>, R<3'>, R<4>, R<4'> independently is hydrogen, C1-C12 alkyl, C2-C12 alkenyl or C6-C12 aryl, dissolved in an inert solvent. The invention also relates to the liquid-absorbing polymers obtained by said method, to their use in hygiene items, packaging material and nonwovens.

Process for post-crosslinking hydrogels with N-acyl-2-oxazolidinones

The invention relates to a method for the secondary gel and/or surface cross-linking of water-absorbent polymers, according to which the polymers are treated with a surface cross-linking solution and during or after this treatment subjected to secondary cross-linking and drying by temperature elevation. The method is characterized in that as cross-linking agent the solution for secondary surface cross-linking contains, dissolved in an inert solvent, a compound of formula (I) in which R<1>, R<2>, R<3>, R<4> independently of each other are hydrogen, C1-C12-alkyl, C1-C12-alkenyl, C6-C12-aryl or C1-C12-alkoxy; R<5> is C1-C16-alkyl, C1-C4-hydroxyalkyl, C6-C12-aryl, C1-C16-alkenyl or a group of the formula -(CH2)n-COOH or -(CH2)n-SO3H in the acid form or in the form of their metal salts, ammonium salts or triethanol ammonium salts or -(CH2-CH2-O-)m-R<6>; R<6> is hydrogen or C1-C16-alkyl; n is a number between 1 and 10; and m is a number between 1 and 20. The invention also relates to the liquid-absorbent polymers obtained in this manner and to their use in hygiene articles, packaging materials and nonwovens.

Process for post-crosslinking of a water absorbing polymer surface with a cyclic urea useful in foams, fibers, films, cables, especially sealing materials and liquid absorbing hygiene articles

A process for post-crosslinking of part of a surface of a water absorbing polymer in which the polymer is brought into contact with a post-crosslinker solution at a temperature of 50-300 degrees C, where the post-crosslinker is a cyclic urea is new. A process for post-crosslinking of part of a surface of a water absorbing polymer in which the polymer is brought into contact with a post-crosslinker solution at a temperature of 50-300 degrees C, where the post-crosslinker is a cyclic urea of formula (I); x = 2 or 3; and R1 and R2 = H or 1-4C alkyl.

Post crosslinking of water absorbing polymers, useful for hygiene articles and packaging, comprises treatment with a bicyclic amideacetal crosslinking agent with simultaneous or subsequent heating

A process for the post crosslinking of water absorbing polymers comprises treatment with a bicyclic amideacetal crosslinking agent with simultaneous or subsequent heating. A process for the post crosslinking of water absorbing polymers comprises treatment with a bicyclic amideacetal crosslinking agent (I) of formula (I) with simultaneous or subsequent heating. [Image] R 1>-R 9>H, 1-12 C alkyl, 2-12 C alkenyl or 6-12 C aryl, all optionally halogenated An independent claim is included for the resulting water absorbing polymer.

Water-absorbing agent and process for producing the same

The present invention provides: a process for producing a water-absorbing agent at low temperature in a short time, wherein the water-absorbing agent has excellent balance between the absorption capacity without load and the absorption capacity under a load, high fluidity under a hygroscopic atmosphere, and excellent safety; and a novel water-absorbing agent and a novel crosslinking agent particularly suitable for crosslinking water-absorbent resins. The water-absorbing agent, having excellent balance between the absorption capacity without load and the absorption capacity under a load, high fluidity under a hygroscopic atmosphere, and excellent safety, can be obtained by using an oxetane compound and/or an imidazolidinone compound for a water-absorbent resin.

Superabsorbent polymers having improved processability

A composition comprising aqueous fluid absorbent polymer particles which have been heat-treated at temperatures greater than 170 °C for more than 10 minutes, wherein the composition has been remoisturized, after the heat-treatment, with an aqueous additive solution, in the absence of an organic solvent or water-insoluble, non-swellable powder, and comprises 1 to 10 percent by weight, based on the total weight of the composition, water and wherein the composition is characterized by the ability to absorb at least 20 grams of a 0.9 weight percent aqueous saline solution under a pressure of 0.3 psi (21,000 dynes/cm2), that is, a 60 minute 0.3 psi (21,000 dynes/cm2) AUL greater than 20 grams/gram. A process for preparing such a composition.

Water absorbent powder and process for the production thereof

A manufacturing method of water-absorbent agent powders of the present invention is a method of reducing an amount of a residue of an epoxy crosslinking agent remaining therein by adding a nucleophilic reagent in a form of powder to surface region crosslinked water-absorbent resin powders having a carboxyl group under an applied heat in which the residue of the crosslinking agent remains. Since the method permits an amount of the residue of the crosslinking agent to be reduced by adding a nucleophilic reagent to the heated water-absorbent resin powders, the water-absorbent agent powders exhibiting well-balanced properties which are mutually negatively correlated from one another, i.e., high absorbency under pressure, a reduced amount of a residue of the epoxy crosslinking agent and a high absorbing rate compared with the conventional surface region crosslinked water-absorbent resin powders can be achieved. Such water-absorbent agent powders are suitably used in sanitary materials such as disposable diaper, sanitary napkin, etc.

Water-absorbing product, e.g. useful for making hygiene articles, comprises water-absorbing polymer particles and a nitrogen-containing polymer

Water-absorbing product comprises water-absorbing polymer particles and a nitrogen-containing polymer containing 5-17 mole/kg of protonatable nitrogen atoms. An Independent claim is also included for production of the water-absorbing product by applying the nitrogen-containing polymer or a solution thereof onto the water-absorbing polymer particles and optionally drying the product.

Method for secondary crosslinking of water-absorbent polymers

The invention relates to a method for the production of water-absorbent polymers. According to the invention, a base polymer (A) which is produced on the basis of a monomer including up to at least 50 % neutralised acid groups is mixed with a first aqueous solution (B) containing at least one surface secondary crosslinker and with a second aqueous solution (C) containing at least one polyvalent cation, and is thermally treated. The solutions B and C are at least partially dosed in a simultaneous manner by means of separated jets. A water-absorbent polymer having high fluid transmissibility is obtained.

A process for the reduction of the residual monomer content of water-absorbent foam

A process for the reduction of the residual monomer content and enhancement of the wet strength of articles formed from water absorbent crosslinked polymer foams containing units derived from monoethylenically unsaturated acids, which comprises treating the formed articles with at least 0.5% by weight of a polymer containing primary and/or secondary amino groups and having a molar mass of at least 300, the formed foam articles thus obtainable and use of the wet strength enhanced formed foam articles in hygiene articles.

Superabsorbing foam, method for the production thereof, and use thereof

Disclosed are superabsorbing foams containing superabsorbing fibers and/or fruit fibers and a method for producing superabsorbing foams having improved wet fastness. According to said method, a cross-linkable aqueous mixture comprising at least 50 mol percent of neutralized, monoethylenically unsaturated monomers containing acid groups or at least one basic polymer, cross-linking agents, superabsorbing fibers, and/or fruit fibers, and at least one surfactant is foamed, whereupon the monomers contained in the foamed mixture are polymerized or the basic polymers are crosslinked, resulting in a foam-type hydrogel being formed. Also disclosed is the use of the foams obtained by means of said method in hygiene products used for absorbing body liquids, bandaging material used for covering wounds, as a sealant, packaging material, soil conditioner, soil substitute, for dewatering mud, thickening aqueous lacquers when disposing of leftover lacquer quantities, dewatering water-containing oils or hydrocarbons, or as a material for filters in ventilation systems.

Superabsorbing foam, method for the production and use thereof

The invention relates to superabsorbing foam which contains 0.01 wt. % - 10 wt. % of fibres which are made of wood pulp or waste paper, in relation to the dry weight of the foam.