НЕСЫПУЧИЕ ФОРМОВАННЫЕ ПОРОШКИ ИЗ МОДИФИЦИРОВАННЫХ ПОЛИТЕТРАФТОРЭТИЛЕНОВ И СПОСОБ ИХ ПОЛУЧЕНИЯ

Изобретение относится к получению порошков из модифицированного политетрафторэтилена, которые используются для дальнейшей экструзии с получением футеровки, труб, шлангов и полос. Несыпучие, не выделяющие пыли формованные порошки с насыпным весом по меньшей мере 450 г/л получают из суспензионного полимеризата с мономерными звеньями тетрафторэтилена и 0,01-1 вес.% мономерных звеньев по меньшей мере перфторалкилвинилового эфира с С1-С4 алкильной группой измельчением полимерных частиц до среднего размера d50 = 10-50 мкм и агломерированием в воде до среднего размера частиц агломерата d50 = 30-100 мкм. Изобретение позволяет получить несыпучий формованный порошок, обладающий преимуществами при его обработке, высоким насыпным весом и отсутствием пыли при изготовлении заготовки. 2 с. и 6 з.п. ф-лы, 6 табл.

СПОСОБ ПОЛУЧЕНИЯ СФЕРИЧЕСКИХ ЧАСТИЦ НА ОСНОВЕ ПОЛИАМИДА

Изобретение относится к способу получения сферических частиц на основе полиамида со средним диаметром ниже 1000 мкм. Способ заключается в том, что вначале получают дисперсию первой жидкости, содержащей мономеры полиамида, во второй жидкости, являющейся инертной. Далее проводят полимеризацию мономеров путем поликонденсации и/или полиприсоединения путем нагревания реакционной среды и продолжают нагревание при температуре ниже температуры плавления полиамида с желаемой степенью полимеризации. Затем частицы выделяют. При необходимости перед выделением частиц давление в реакционной среде снижают до атмосферного и/или постепенно охлаждают реакционную среду. Изобретение позволяет использовать умеренные температуры, позволяющие избежать возможных разрушений полиамида и получить сферические частицы, имеющие удовлетворительное распределение по размеру. 17 з.п. ф-лы.

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.

ПОЛИМЕРНАЯ КОМПОЗИЦИЯ ДЛЯ ОСОБО СЛОЖНЫХ УСЛОВИЙ ЭКСПЛУАТАЦИИ, УПЛОТНИТЕЛЬНОЕ УСТРОЙСТВО ПОДВИЖНЫХ И НЕПОДВИЖНЫХ СОЕДИНЕНИЙ, ДИАФРАГМА И СПОСОБ ИЗГОТОВЛЕНИЯ ПОЛИМЕРНЫХ ИЗДЕЛИЙ ДЛЯ ПНЕВМАТИЧЕСКИХ ТОРМОЗНЫХ СИСТЕМ ЖЕЛЕЗНОДОРОЖНОГО ПОДВИЖНОГО СОСТАВА

Изобретения относятся к области производства резиновых технических изделий, которые эксплуатируются в условиях больших механических нагрузок, трения, агрессивных средах и сложных климатических условиях и могут быть использованы для изготовления уплотнительных устройств подвижных и неподвижных соединений типа колец, манжет, прокладок, а также для изготовления исполнительных устройств мембранных преобразователей изменений давления в линейные перемещения и изделий для систем торможения железнодорожного подвижного состава. Полимерная композиция включает компоненты, мас.ч.: каучук бутадиен-нитрильный парафинатный - 90-100, бутадиен-метилстирольный каучук 0-10, серу техническую - 0,5-1,5, тетраметилтиурамдисульфид - 1-2, N,N'-дитиодиморфолин - 1,5-2,5, N-циклогексил-2-бензтиазолилсульфенамид - 1,0-2,5; оксид цинка - 4-8, фенил-β-нафтиламин - 0,5-2,5, углерод технический - 100-150, дибутилфталат - 20-40, дибутилсебацинат - 20-40 и кислоту стеариновую - 0,5-2,5. Изобретения позволяют получить изделия ...

ЗАЩИТНЫЕ ПЛЕНКИ И КЛЕЙ, СКЛЕИВАЮЩИЙ ПРИ НАДАВЛИВАНИИ

Изобретение относится к защитной пленке в форме ленты или листа для изделий, имеющих форму. Защитная пленка включает слой субстрата и клеевую композицию, склеивающую при надавливании. Слой субстрата предпочтительно является экструдируемым слоем субстрата. Клеевая композиция включает блоксополимер, смолу, повышающую клейкость и, необязательно, полиолефин, пластификатор и антиоксидант. Блоксополимер содержит по меньшей мере два поли- или моно-винилароматических углеводородных блока и по меньшей мере один гидрированный блок поли- или сопряженного диена. Клеевую композицию получают сухим смешением компонентов. Сухую смесь экструдируют, гранулируют в подводном грануляторе с получением влажных гранул. Влажные гранулы сушат. Возможна обработка влажных или сухих гранул опудривающим средством. Клеевая композиция сочетает в себе высокую адгезию при отслаивании и скорость течения расплава от 5 до 20 г/10 мин. 5 н. и 8 з.п. ф-лы, 3 табл.

СПОСОБ ПОЛУЧЕНИЯ ПОРОШКООБРАЗНЫХ МАТЕРИАЛОВ ИЗ ФТОРСОДЕРЖАЩИХ ПОЛИМЕРОВ

Изобретение относится к способу получения порошкообразных материалов из фторсодержащих полимеров. Суспензию твердых частиц фторсодержащего полимера в жидком носителе, предпочтительно воде, замораживают, а затем замороженный носитель удаляют сублимацией при субатмосферном давлении для получения сухого порошка частиц фторсодержащего полимера. Способ позволяет получать порошкообразные материалы из жидкой суспензии твердых частиц фторсодержащего полимера, который при нормальных условиях не поддается перекачке насосом из-за способности к фибриллированию. 12 з.п. ф-лы.

СОДЕРЖАЩИЙ НАПОЛНИТЕЛЬ ГРАНУЛИРОВАННЫЙ ПОРОШОК ПОЛИТЕТРАФТОРЭТИЛЕНА И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Описывается способ получения содержащего носитель гранулированного порошка политетрафторэтилена путем грануляции смеси порошка политетрафторэтилена, которые получают суспензионной полимеризацией, и наполнителя в воде с перемешиванием. Способ отличается тем, что порошок политетрафторэтилена и наполнитель отдельно насыпают в воду без предварительного смешивания, смешивают путем перемешивания в присутствии поверхностно-активного вещества для получения суспензии и затем гранулируют с помощью перемешивания в присутствии органической жидкости, которая образует поверхность раздела жидкость-жидкость с водой, и тем, что гранулированный порошок имеет средний размер частиц не более чем 500 мкм и объемную плотность не менее чем 600 кг/м3. Описывается также способ его получения. Технический результат - получение содержащего наполнитель гранулированного порошка политетрафторэтилена, который обладает большой объемной плотностью, малый средним размером частиц, узким распределением размера частиц и превосходной ...

СПОСОБ ВВЕДЕНИЯ ДОБАВОК В ПОЛИМЕРЫ ВИНИЛИДЕНХЛОРИДА БЕЗ ПРИМЕНЕНИЯ СМЕСИТЕЛЯ

Изобретение относится к полимерам винилиденхлорида (ВДХ). Способ смешивания частиц твердой добавки с твердыми частицами полимера ВДХ, при этом способ включает следующие стадии: A) полимеризация мономера ВДХ, необязательно с одним или более моноэтиленненасыщенными сомономерами в зоне полимеризации в условиях полимеризации с образованием твердых частиц полимера ВДХ; B) остановка полимеризации мономеров ВДХ после образования твердых частиц полимера ВДХ; и C) приведение в контакт твердых частиц полимера ВДХ с твердыми частицами добавки (I) до того, как твердые частицы полимера ВДХ обезвожены, (II) во время и/или после удаления остаточного мономера из твердых частиц полимера ВДХ и (III) при температуре, достаточной для плавления или размягчения частиц твердой добавки, но недостаточной, чтобы расплавить или размягчить твердые частицы полимера ВДХ таким образом, чтобы расплавленные или размягченные частицы твердой добавки прилипали к твердым частицам полимера ВДХ при контакте. 9 з.п. ф-лы, 3 табл ...

НЕПРЕРЫВНЫЙ СПОСОБ И УСТРОЙСТВО ДЛЯ СУШКИ ГЕЛЕОБРАЗНЫХ ПОЛИМЕРОВ, СОДЕРЖАЩИХ РАСТВОРИТЕЛЬ

Изобретение относится к непрерывному способу сушки простых эфиров целлюлозы, а также устройству для сушки этих эфиров. Непрерывный способ сушки горячей водной суспензии простых эфиров целлюлозы осуществляется путем охлаждения суспензии и сушки. Исходную суспензию с содержанием твердых веществ от 1 до 65% масс. подают при давлении от давления окружающей среды до 6000 гПа, при температуре суспензии от 20 до 100°С в зону выпаривания, давление в которой составляет от 0,1 до 800 гПа, с охлаждением суспензии до температуры менее 93°C, удалением на 2-5% масс. воды, с механическим перемешиванием, смешиванием смеси и ее подачей в нижнюю часть зоны выпаривания при образовании плотного гелеобразного слоя продукта, с последующим отводом его при помощи механического разгрузочного устройства и сушкой в сушильном устройстве до содержания воды максимум 5% масс. Охлаждение осуществляют с помощью мгновенного охлаждения. Устройство для проведения способа содержит, по крайней мере, один выпарной аппарат, имеющий ...

ПОЛУЧЕНИЕ ПОЛИЛАКТИДНО-ПОЛИГЛИКОЛИДНЫХ МИКРОЧАСТИЦ, ХАРАКТЕРИЗУЮЩИХСЯ СИГМОИДАЛЬНЫМ ПРОФИЛЕМ ВЫСВОБОЖДЕНИЯ

Изобретение относится к получению биоразлагаемых микрочастиц, образованных из полилактидно-полигликолидных сополимеров (PLGA), и к обеспечению сигмоидального высвобождения рисперидона из этих микрочастиц. Описаны варианты способа получения биоразлагаемых микрочастиц из сополимера D,L-лактида и гликолида (PLGA), характеризующихся сигмоидальным профилем высвобождения рисперидона, который содержится в микрочастицах, включающий следующие стадии: a) получение внутренней масляной фазы путем растворения полимера PLGA и рисперидона в органическом растворителе, при этом концентрация полимера во внутренней масляной фазе находится в диапазоне 5-8% по весу; b) получение внешней водной фазы, состоящей из воды, поливинилового спирта (PVA), необязательно водного буферного раствора для доведения рН до значения, при котором рисперидон характеризуется более низкой растворимостью, и такого же органического растворителя, что и используемый в масляной фазе, при этом количество органического растворителя, добавленного ...

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 ...

ПЫЛЕВИДНАЯ КОМПОЗИЦИЯ, ПРИГОДНАЯ ДЛЯ ПОВТОРНОГО ДИСПЕРГИРОВАНИЯ В ВОДЕ, СПОСОБ ЕЕ ПОЛУЧЕНИЯ И ЛАТЕКС, ПОЛУЧЕННЫЙ ПОВТОРНЫМ ДИСПЕРГИРОВАНИЕМ В ВОДЕ ПЫЛЕВИДНОЙ КОМПОЗИЦИИ

Изобретение относится к пригодной для повторного диспергирования в воде пылевидной композиции, содержащей по меньшей мере один нафталинсульфонат общей формулы I, в которой Х и Х' обозначают ОН или NH2, Y обозначает SO3-М+, где М - щелочной металл; х=0,1; х'=0,1 и х+х'=1; у=0,1; у'=0,1 и у+у'=1, и по меньшей мере один этиленненасыщенный мономер, оба вышеуказанных мономера образуют по меньшей мере один не растворимый в воде пленкообразующий полимер. Изобретение включает способ получения композиции и латекс. 3 с. и 15 з.п. ф-лы, 6 табл.

СПОСОБ ПОЛУЧЕНИЯ ГРАНУЛ СЛОЖНОГО ПОЛИЭФИРА С НИЗКОЙ СТЕПЕНЬЮ ГИДРОЛИЗА ИЗ ВЫСОКОВЯЗКИХ РАСПЛАВОВ СЛОЖНОГО ПОЛИЭФИРА И УСТРОЙСТВО ДЛЯ ПОЛУЧЕНИЯ ГРАНУЛ СЛОЖНОГО ПОЛИЭФИРА

Изобретение относится к способу прямого получения гранулята полиэтилентерефталата с низкой степенью гидролиза из высоковязкого расплава полиэтилентерефталата и устройство для прямого получения гранулята полиэтилентерефталата с низкой степенью гидролиза. Способ прямого получения гранулята полиэтилентерефталата со степенью полимеризации СП от 132 до 165, при котором расплав после осуществления способа разрезания в горячем состоянии подвергают предварительной сушке и сушке/дегазации. Стадию разрезания в способе разрезания в горячем состоянии осуществляют при температурах воды от 70 до 95°С и при поддержании соотношения жидкости к твердому веществу - соотношения воды к гранулам/грануляту от 8:1 до 12:1, причем жидкость полностью удерживают до поступления в предварительную сушилку, а циркулирующую воду в предварительной сушилке отделяют в течение менее 10 с. Кроме того, изобретение относится к грануляту полиэтилентерефталата, полученному указанным способом, который имеет степень поликонденсации ...

СПОСОБ ПОЛУЧЕНИЯ ВОДОРАСТВОРИМЫХ (СО)ПОЛИМЕРОВ АКРИЛОВОГО РЯДА

Изобретение относится к получению водорастворимых полимеров акрилового ряда, которые могут применяться в ряде отраслей техники и технологии, а именно в качестве шлихты при отделке текстиля, в угольной, горнорудной промышленности, и в процессах очистки и осветления питьевой, промышленной и сточных вод в качестве флокулянта, в буровой технике в качестве защитного средства, в химической промышленности как сгущающее средство. Описывается способ получения водорастворимых (со)полимеров акрилового ряда, включающий (со)полимеризацию исходных мономеров акрилового ряда в присутствии радикальных инициаторов при температуре, равной или близкой к температуре распада взятого инициатора, до появления гель-эффекта, сушку форполимера и грануляцию, причем форполимер со степенью конверсии 30-85% непосредственно после появления гель-эффекта экструдируют, продукт экструзии сушат при температуре 60 - 135oС, а гранулированию подвергают полностью (со)полимеризованный и высушенный целевой продукт. Изобретение позволяет ...

СПОСОБ ПОЛУЧЕНИЯ МЕЛКИХ ЧАСТИЦ ПОЛИАМИДА И МЕЛКИЕ ЧАСТИЦЫ ПОЛИАМИДА

Настоящее изобретение относится к мелким частицам полиамида и к способу их получения. Мелкие частицы полиамида получают в результате полимеризации мономера полиамида (А) в присутствии полимера (В) при температуре равной или большей, чем температура кристаллизации получаемого полиамида, где мономер полиамида (А) и полимер (В) гомогенно растворяются в начале полимеризации, а мелкие частицы полиамида осаждаются после полимеризации. Полимер (В) представляет собой по меньшей мере один полимер, выбранный из полиэтиленгликоля, полипропиленгликоля, политетраметиленгликоля, сополимера полиэтиленгликоль-полипропиленгликоля и их алкилового простого эфира. Квадрат разницы параметров растворимости между мономером (А) и полимером (В) находится в диапазоне от 0,1 до 25. Квадрат разницы параметров растворимости между полиамидом и полимером (В) находится в диапазоне от 0,1 до 16. Полученные мелкие частицы полиамида характеризуются среднечисленным размером частиц в диапазоне от 0,1 до 100 мкм, сферичностью ...

СПОСОБ ПОЛУЧЕНИЯ ФТОРПОЛИМЕРНЫХ ПОРОШКОВЫХ МАТЕРИАЛОВ

Изобретение относится к получению фторполимерных порошковых материалов. Получают модифицированный фторполимерный порошковый материал. Получают суспензию твердых частиц фторполимера из группы, включающей полимер фторэтиленпропилена и полимер перфоралкокси-соединений совместно с частицами ПТФЭ в водном жидком носителе. Замораживают водную суспензию. Замороженный носитель удаляют посредством сублимации при давлении ниже атмосферного с получением сухих частиц фторполимера, модифицированного наличием модификатора ПТФЭ в виде порошка. 13 з.п. ф-лы, 3 ил., 1 пр.

ВОДОРАСТВОРИМЫЕ, СПОСОБНЫЕ К ОБРАЗОВАНИЮ СЕТЧАТЫХ СТРУКТУР СОПОЛИМЕРЫ

Описываются водорастворимые, способные к образованию сетчатых структур сополимеры со средней молекулярной массой меньшей или равной 500000, содержащие а) 20 - 95 мас.% мономерных звеньев, полученных из водорастворимых радикально полимеризуемых этиленненасыщенных соединений, содержащих сульфонокислотные или сульфонатные группы; б) 4 - 80 мас.% мономерных звеньев, полученных из водорастворимых, радикально полимеризуемых, этиленненасыщенных соединений, содержащих N-метилольные или N-алкоксиметильные группы; в) 0,1 - 20 мас. % гидрофобных мономерных звеньев, полученных из группы водонерастворимых, этиленненасыщенных соединений и гидрофобных концевых групп, остатков инициатора или молекул и регулятора, причем содержание в мас.% указано в пересчете на общую массу сополимера, причем доля мономерных звеньев, содержащих сульфонокислотные или сульфонатные группы, может быть замещена при необходимости до 50 мас.% в пересчете на массовую долю мономерных звеньев а) мономерными звеньями г),полученными ...

ПРИГОДНЫЕ ДЛЯ ПОВТОРНОГО ДИСПЕРГИРОВАНИЯ В ВОДЕ ГРАНУЛЫ, СОДЕРЖАЩИЕ АКТИВНОЕ ВЕЩЕСТВО В ЖИДКОМ ВИДЕ

Описаны гранулы, способные повторно диспергироваться в воде, отличающиеся тем, что они могут быть получены путем проведения следующих стадий: приготовление водной эмульсии по меньшей мере одного активного вещества по меньшей мере одного неионогенного ПАВ и по меньшей мере одного водорастворимого или способного диспергироваться в воде соединения; высушивание полученной таким образом эмульсии, а активное вещество находится в виде гидрофобной жидкости, неионогенное ПАВ выбирают из полиоксиалкиленированных производных, водорастворимое или способное диспергироваться в воде соединение представляет собой (i) по меньшей мере один полимер, получаемый полимеризацией по меньшей мере одного мономера I и по меньшей мере одного мономера II', где обозначенные выше мономеры являются следующими: (I) - алифатическая, циклическая или ароматическая, линейная или разветвленная, этиленовоненасыщенная монокарбоновая или поликарбоновая кислота или ангидрид, (II') - соединение формулы (R2) (R2) - C = CH2, в которой ...

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 ...

СОСТАВ ДЛЯ ПОКРЫТИЯ ЧАСТИЦ КАУЧУКА, СПОСОБ ИЗГОТОВЛЕНИЯ КРОШАЩИХСЯ КИП ИЗ КАУЧУКА

Использование: переработка полимеров, в составах для покрытия частиц каучука и способах изготовления крошащихся кип из каучука. Техническая сущность: приготавливают состав для покрытия частиц каучука. Состав содержит минеральное обволакивающее вещество, целлюлозное связующее-загуститель, воду и водорастворимый анионный диспергатор. Смешивают 0,1 - 0,5 мас.ч. загустителя, 0,25 - 0,5 мас. ч. диспергатора на 100 мас. ч. обволакивающего вещества. Обрабатывают частицы каучука составом в количестве 0,2 - 0,5 мас. ч. на 100 мас. ч. каучука. Используют влажный каучук. Удаляют влагу из каучука пропусканием его через обезвоживающей экструдер до получения экструдата каучука с влажностью 3 - 7 %. Разрезают на гранулы, наносят покрытие на гранулы на выходе из экструдера. Высушивают с помощью воздуха в сушилке. Прессуют до получения кип каучука. Характеристика крошащихся кип из каучука с покрытием частиц: сохраняют способность крошиться в течение более 6 месяцев их хранения. 2 с. и 13 з.п., 4 ил., 7 ...

ПОЛИМЕРНАЯ КОМПОЗИЦИЯ С ЭЛЕКТРОПРОВОДНЫМИ СВОЙСТВАМИ, СПОСОБ ЕЕ ПОЛУЧЕНИЯ И ПРИМЕНЕНИЯ

Изобретение относится к производству полимерных изделий с электропроводными свойствами для хранения и транспортировки легковоспламеняющихся жидкостей. Предложены полимерная композиция для производства ёмкости с электропроводными свойствами, содержащая, масс.%: 99,9-99,99 термопластичного полимера линейного типа и 0,01-0,1 концентрата одностенных углеродных нанотрубок, способ получения предложенной полимерной композиции, который заключается в введении в систему термопластичного полимера линейного типа с последующим нагревом до температуры плавления, затем в расплав вводят концентрат углеродных нанотрубок с последующим смешением компонентов, после чего происходит формирование и охлаждение нитей из полученной смеси компонентов с последующим формированием цилиндрических гранул, и способ применения предложенной полимерной композиции для производства ёмкости с электропроводными свойствами путём измельчения в порошок полученных цилиндрических гранул и последующим формированием из порошка полимерной ...

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.

СПОСОБ ГРАНУЛИРОВАНИЯ БЛОКИРОВАННОГО ε -КАПРОЛАКТАМОМ ТОЛУИЛЕНДИИЗОЦИАНАТА

Изобретение относится к технологии получения гранулированного блокированного e -капролактамом толуилендиизоцианата для использования в производстве шин, резино-технических изделий и других материалов. Способ гранулирования блокированного e -капролактамом толуилендиизоцианата /смесь изомеров 2, 4- и 2,6-толуилендиизоцианатов в соотношении 80:20 или 65:35/ осуществляют разбрызгиванием расплава продукта с температурой 140-150oC и содержанием 1-2 мас. % свободного e -капролактама, в воду с температурой не выше 30oC с последующей фильтрацией и сушкой гранул воздухом с температурой 30-35oC.

СПОСОБ ПОЛУЧЕНИЯ НЕЙТРОНОЗАЩИТНОГО МАТЕРИАЛА НА ПОЛИМЕРНОЙ ОСНОВЕ

Изобретение относится к способам изготовления боросодержащего нейтронозащитного композиционного порошкового материала на полимерной основе в виде частиц сферической формы, предназначенного для защиты от нейтронного излучения, который может быть использован для равномерного заполнения полых объемов произвольной геометрии, в том числе путем пневмотранспортирования по каналам с малыми поперечными сечениями. Настоящее изобретение относится к способу получения нейтронозащитного материала на полимерной основе. Данный способ заключается в смешивании исходных компонентов - порошкообразных полиэтилена высокого давления линейной структуры и наполнителя - нитрида бора. Пластификации смеси в экструдере при температуре, превышающей температуру плавления полимера. Гранулировании полученного пластификата. Измельчении гранул с последующей обработкой полученного порошка для придания частицам сферической формы. В качестве наполнителя используют нитрид бора природного изотопного состава. Соотношение исходных ...

СПОСОБ ГРАНУЛИРОВАНИЯ ПОЛИОЛЕФИНОВ

Использование: в производстве гранулированных полимеров. Сущность: способ включает стадии суспендирования порошка полиолефина в воду, добавляя в качестве гидрофобной органической жидкости 3 - 60% раствора концентрата высокомолекулярных соединений нефти в алифатических углеводородах при массовом соотношении компонентов, мас.%: вода - гидрофобная органическая жидкость - полиолефин (10 - 200) : (0,4 - 3,6) - (0,1 - 1,0) соответственно. 1 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 ...

СПОСОБ РАСПЫЛИТЕЛЬНОЙ СУШКИ ЭМУЛЬСИИ ТИПА "ВОДА В МАСЛЕ"

... 1. Способ получения по существу сухих водорастворимых или водонабухающих, содержащих винильно-аддитивный полимер частиц, включающий в себя (а) распылительную сушку содержащей винильно-аддитивный полимер эмульсии типа "вода в масле" или микроэмульсии типа "вода в масле" в потоке газа, со временем пребывания от, приблизительно, 8 до приблизительно, 120 секунд, и с температурой на выходе от, приблизительно, 70°С до менее 100°С, и (б) сбор получающихся таким образом частиц полимера. 2. Способ по п. 1, в котором указанные содержащие винильно-аддитивный полимер эмульсии типа "вода в масле" или микроэмульсии типа "вода в масле" состоят из летучего масла. 3. Способ по п. 1, в котором указанные содержащие винильно-аддитивный полимер эмульсии типа "вода в масле" или микроэмульсии типа "вода в масле" включают полимер, имеющий боковые группы, выбираемые из группы, состоящей из амида, третичного аминометила, четвертичного основания третичного аминометила, гидроксила, глиоксаля, сульфоната, соли сульфоната ...

Влаговпитывающая полимерная композиция

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НАНОКОМПОЗИТ НА ОСНОВЕ ПОЛИМЕРА И ГЛИНЫ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

... 1. Способ получения нанокомпозита полимера и глины, включающий следующие стадии: (а) контактирование (I) раствора полимера в органическом растворителе, (II) водной суспензии глины, (III) модификатора и (IV) кислоты Бренстеда с образованием эмульсии; (б) перемешивание эмульсии с получением нанокомпозита; (в) выделение нанокомпозита из эмульсии.2. Способ по п.1, в котором модификатор протонируют in situ кислотой Бренстеда.3. Способ по п.1, в котором на стадии (а) обеспечиваются первая смесь, включающая раствор полимера и кислоту Бренстеда, и вторая смесь, включающая водную суспензию глины и модификатор, и первую и вторую смеси соединяют с образованием эмульсии.4. Способ по п.3, в котором первая смесь представляет собой выходящий поток реактора галогенирования полимера.5. Способ по п.1, в котором на стадии (а) раствор полимера и суспензию глины сначала соединяют с получением эмульсии, затем к указанной эмульсии отдельно или совместно добавляют модификатор и кислоту Бренстеда.6. Способ по п ...

ИЗДЕЛИЯ ИЗ ПОЛИИЗОПРЕНА, КАТАЛИЗИРУЕМОГО ПО ЦИГЛЕРУ-НАТТА

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... 1. Способ формования листов из политетрафторэтилена, включающий распределение слоем и раскатывание порошка политетрафторэтилена, маслянистость которого обеспечивают с помощью смазочного материала, в зазоре между по крайней мере одной парой лентоподобных ремней, при движении которых их поверхности сохраняют расположение напротив друг друга, причем зазор между ремнями на их выходной стороне уже, чем на входной стороне. 2. Способ формования листов из политетрафторэтилена по п. 1, в котором порошок политетрафторэтилена сжимают, чтобы он стал листом, прежде, чем раскатывают между противоположными поверхностями ремней. 3. Способ формования листов из политетрафторэтилена по п. 1, в котором лист далее раскатывают между по крайней мере одной парой обжимных валков после того, как его распределяют слоем и раскатывают между ремнями. 4. Способ формования листов из политетрафторэтилена по п. 1, в котором порошок политетрафторэтилена или лист политетрафторэтилена, маслянистость которого обеспечивают с ...

СПОСОБ ТЕРМИЧЕСКОЙ ОБРАБОТКИ ПОЛИЭФИРНЫХ ГРАНУЛ ДЛЯ ПОЛУЧЕНИЯ ЧАСТИЧНОЙ КРИСТАЛЛИЗАЦИИ

... 1. Способ термической обработки полиэфирных гранул, чтобы достичь частичной кристаллизации, причем расплав полиэфира подают в систему подводной грануляции и гранулируют, полученный гранулят на небольшом расстоянии от системы подводной грануляции загружают в устройство разделения вода/твердая фаза, затем высушенный гранулят без подвода внешней энергии или тепла подают на установку обработки при температуре гранулята выше 100°C и осуществляют проводимую для частичной кристаллизации термическую обработку за счет имеющегося в грануляте собственного тепла, отличающийся тем, что гранулят подают в реактор кристаллизации, ориентированный по меньшей мере слегка наклонно, при температуре выше 100°C, проводят через него от места загрузки до места выгрузки и выводят из этой области кристаллизации при температуре выше 130°C без подвода энергии. ! 2. Способ по п.1, отличающийся тем, что гранулят от выгружающего конца реактора кристаллизации подают в бункер, реактор твердофазной поликонденсации или другую ...

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... 1. Способ получения гранулята из многофункциональных карбоновых кислот и спиртов, в особенности ПЭТФ-гранулята, согласно которому терефталевую кислоту и этиленгликоль, после их введения в реакцию этерификации и предварительной поликонденсации, в виде низковязкого предконденсата отфильтровывают, гранулируют и вводят в стадию твердофазной поликонденсации, а также затем получают в виде частично кристаллического гранулята с высокой вязкостью, отличающийся тем, что предконденсат для гранулирования вводят в капельную колонну с расположенной в головной части капельной колонны и нагреваемой распределительной капельницей, предконденсат выходит из распределительной капельницы с образованием каплеобразных гранул и гранулы на всем протяжении установленной высоты свободного падения обдуваются идущим противотоком горячим потоком азота при снижении скорости падения и ускорении кристаллизации с возрастающей степенью кристаллизации, и выходящие из основания капельной колонны гранулы в виде высушенных и ...

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УСТАНОВКА ДЛЯ ПОЛУЧЕНИЯ ГРАНУЛИРОВАННОГО ТЕРМОПЛАСТИЧНОГО ПОЛИУРЕТАНА И СПОСОБ ПОЛУЧЕНИЯ ГРАНУЛИРОВАННОГО ТЕРМОПЛАСТИЧНОГО ПОЛИУРЕТАНА

... 1. Установка для получения гранулированного термопластичного полиуретана, включающая реактор, снабженный смесительным устройством, устройство для термопластикации и гранулятор, отличающаяся тем, что смесительное устройство представляет собой двухроторное смесительное устройство и дополнительно содержит соединенный с реактором шестеренчатый насос и статический смеситель, при этом соотношение диаметра ротора двухроторного смесительного устройства к длине его ротора составляет 1:1,5-2,5.2. Установка для получения гранулированного термопластичного полиуретана по п. 1, отличающаяся тем, что включает дополнительный параллельно расположенный реактор, снабженный двухроторным смесительным устройством, соединенный с шестеренчатым насосом.3. Способ получения гранулированного термопластичного полиуретана в установке по п. 1, включающий получение предполимера реакцией олигоэфира с расчетным количеством МДИ путем смешения в реакторе, снабженным двухроторным смесительным устройством, введение при постоянном ...

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Dust-free, dispersible compacted or briquetted carbon@ black for colouring building or organic materials - made using processing aid by compacting, pulverising and separating into fractions

Production of compacted or briquetted carbon black pigment granulate comprises: (a) mixing the pigment with one or more processing aids; (b) compacting or briquetting the mixture; (c) pulverising the product; (d) separating into two or more fractions; and (e) removing as final product the fraction with at least 85% of particles above 80 (especially above 100) mu m or with size 80-2,000 (especially 100-1,000) mu m and optionally rounding it, and discarding or recycling the other fraction(s).

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ABSORBIERENDES PRODUKT

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Die vorliegende Erfindung betrifft ein mehrstufiges Verfahren zum Herstellen eines oder mehrerer Formkörper, wobei das Verfahren die Schritte umfasst: a. schichtweisen Aufbau eines oder mehrerer Formkörper mittels wiederholtem Aufbringen von Partikelmaterial im 3D Druckverfahren, b. einen Vorverfestigungsschritt zum Erzielen einer Vorverfestigung des Formkörpers, c. einen Entpackschritt, wobei das nicht verfestigte Partikelmaterial von dem vorverfestigten Formkörper getrennt wird, d. einen Endverfestigungsschritt, bei dem der Formkörper seine Endfestigkeit erhält, durch Einwirkung von Wärmeenergie, sowie eine für dieses Verfahren verwendbare Vorrichtung.

Verfahren zur Herstellung von flüssigen Suspensionen aus Polysaccharidmischungen

MODIFIZIERTES FEINPULVERIGES POLYTETRAFLUORAETHYLEN UND VERFAHREN ZU SEINER HERSTELLUNG.

HARZ FUER PULVERSINTERVERFAHREN.

Herstellungsverfahren mikroskopisch feiner, gefärbter Teilchen und elektrophotographische Toner die die Teilchen umfassen

Verfahren zur Herstellung von pulverförmigen wasserlöslichen Cellulosederivaten

VERFAHREN ZUR HERSTELLUNG VON MIKROSPHÄRISCHEN KRISTALLITEN AUS LINEAREN POLYSACCHARIDEN, ENTSPRECHENDE MIKROSPHÄRISCHE KRISTALLITE UND DEREN VERWENDUNG

VERWENDUNG VON WASSERLÖSLICHEN POLYMEREN ALS TROCKNUNGSHILFMITTEL FÜR DIE HERSTELLUNG POLYMERER DISPERGIERMITTEL

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

REDISPERGIERBARE POLYMERISATPULVER

HERSTELLUNG EINES GEGEN KALTES FLIESSEN BESTAENDIGEN POLYMERPULVERS.

PARTIKEL FÜR ARZNEISTOFFABGABE

Poröse Polymerperlen und Verfahren.

VERFAHREN ZUR KOERNUNG EINES WASSER ABSORBIERENDEN HARZES.

KÜNSTLICHE AGGREGATE AUS POLYETHYLENTEREPHTHALAT ZUR HERSTELLUNG VON LEICHTBETON

Verfahren zum Herstellen eines frei fliessenden Siliconharzpulvers

Verfahren zum Herstellen eines frei fließenden Siliconharzpulvers mit einer primären Teilchengröße im Bereich von 0,1 bis 200 nm und einer Aggregatgröße im Bereich von 10 nm bis 200 µm, das mit einer Siliconflüssigkeit zur Herstellung einer im wesentlichen stabilen Dispersion vermischt werden kann, umfassend: (1) Bilden eines Organosiloxan-Hydrolysats, umfassend Triorganosiloxy-Einheiten und Tetrasiloxy-Einheiten, mit einem Verhältnis von Organogruppen zu Si von 0,5 bis 1,5, durch Reaktion eines Siliciumdioxid-Hydrosols mit einem Hexaorganodisiloxan und/oder einem hydrolysierbaren Triorganosilan, wobei mindestens 90% der Organoreste Methylgruppen sind, in einem wässerig-organischen Lösungsmittelmedium, unter Bedingungen der Grenzflächenreaktion, (2) Gewinnen des Organosiloxan-Hydrolysats in Form einer Dispersion in organischem Lösungsmittel durch Trennung der Mischung nach (1) in organische und wässrige Phase und Entfernen der wässrigen Schicht und (3) Zerstäubungstrocknen der Dispersion ...

SPRÜHGETROCKNETE POLYMERAGGLOMERATE UND DEREN ANWENDUNGSVERFAHREN

Verfahren zur Herstellung feinstkoerniger Polyvinylchloridpulver

Verfahren zur Verdichtung von Polyolefinen

Verfahren für die Herstellung von Granulen, die auf expandierbaren thermoplastischen Polymeren basieren

Verfahren zur kontinuierlichen Herstellung von expandierbaren Granulen, basierend auf thermoplastischen Polymeren, durch eine Granulierungsdüse, das die nachstehenden Schritte einschließt:i) Bringen eines ersten Stroms von geschmolzenem Vinyl- aromatischem Polymer auf eine Bezugstemperatur, wobei die Bezugstemperatur im Bereich der kritischen Temperatur des expandierenden Systems minus 25°C liegt und der kritischen Temperatur des expandierenden Systems plus 25°C liegt;(ii) Bringen von mindestens einem zweiten Strom von geschmolzenem Vinyl-aromatischem Polymer auf eine Bezugstemperatur, wobei die Bezugstemperatur im Bereich von der kritischen Temperatur des expandierenden Systems minus 25°C zu der kritischen Temperatur des expandierenden Systems plus 25°C liegt;iii) Einarbeiten eines expandierenden Systems in den sich ergebenden polymeren Strom in dem geschmolzenen Zustand aus Schritt (i) oder (ii) bei einem Bezugsdruck, wobei der Bezugsdruck höher als der kritische Druck des expandierenden ...

VERFAHREN ZUM BESCHICHTEN VON FORMTEILEN

Verfahren zur Herstellung von feinzerteilten Polyvinylharzen

VERFAHREN ZUR VERGRÖSSERUNG DER OBERFLÄCHE VON PARTIKELN

Verfahren zur Herstellung von Brikettier- und Pressgranulaten

PERLPOLYMERISAT UND DESSEN VERWENDUNG ZUR IMMOBILISIERUNG VON ENZYMEN

"PULVERFOERMIGE POLYMERKOMPOSITION, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG"

Verfahren zur schonenden Herstellung von hochfeinen Mikropartikeln und Nanopartikeln

The invention concerns ultrafine microparticles and nanoparticles, and a method for controlled production thereof in the absence of or with minimum water, in the absence of plasticizers or under reduced temperature constraint. The method is characterised in that it consists in subjecting a matrix material to a high pressure homogenising process in an anhydrous or dry or low temperature medium, preferably at room temperature (20 DEG C) and in particular below the freezing point of water. Said process brings about controlled fine grinding and reduces to a minimum the damaging influence of the chemical stability of the homogenised material.

VERFAHREN ZUR HERSTELLUNG VON AGGLOMERATTEILCHEN

Kautschukpulver, die hohe Mengen an Füllstoffen enthalten, Verfahren zu ihrer Herstellung und ihre Verwendung

Die Erfindung betrifft Kautschukpulver mit einem hohen Füllgrad, die man durch Ausfällen aus wasserhaltigen Suspensionen, die Füllstoffe und Kautschukemulsionen oder -lösungen enthalten, gewinnt und ihre Verwendung zur Herstellung von vulkanisierbaren Kautschukmischungen.

Verfahren zur Herstellung von PA-6 Granulat und dessen Verwendung

Plasticised polyvinyl alcohol granulate - made from particles of uniform size by mixing with plasticiser and water

Plasticised polyvinyl alcohol (PVA) suitable for thermoplastic processing contains >=70wt.% particles of 0.8-4 mm dia. in which the plasticiser is homogeneously dispersed. It is made by mixing 100 pts. dry PVA granulate with 5-50 parts plasticiser in presence of insufficient water to completely dissolve the PVA, the heating and subsequent cooling to swell and temporarily agglomerate the particles. A free-flowing non-tacky granulate is obtd. from dry polymer with improved mechanical properties in the product due to homogeneous dispersion of the plasticiser. Removal of the water is unnecessary.

Pelletzusammensetzung

Verfahren zur Herstellung von Ethylen-Vinylalkohol-Copolymerharz, Verfahren zur Herstellung von Pellets und Harzpellets

FARBIGE ZUSAMMENSETZUNG ENTHALTEND EIN BITUMINÖSES BINDEMITTEL UND DESSEN ANWENDUNGEN

Verfahren zur Gewinnung fein verteilter alpha-Olefinpolymerer

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

VERFAHREN ZUR GRANULATHERSTELLUNG AUS AMORPHEN POLYESTERN

VERFAHREN ZUR HERSTELLUNG VON GEPULVERTEM SILICONKAUTSCHUK

Polyamide microparticles, manufacturing method therefor, optical film using said polyamide microparticles, and liquid crystal display device

Disclosed are polyamide microparticles, a manufacturing method therefor, an optical film, and a liquid crystal display device using the polyamide microparticles, whereby polarized light can be efficiently converted to non-polarized light that is close to natural light, without accompanying a change in color, and light from a light source can be evenly diffused. The disclosed polyamide microparticles are characterized by including a spherocrystal structure and exhibiting a crystallite size of at least 12 nm, as measured by wide-angle X ray diffraction, and a crystallinity of at least 50%, as measured by DSC. The disclosed optical film is characterized by having a resin layer that contains the aforementioned polyamide microparticles. The disclosed liquid crystal display device is provided with a light-source device, a rear polarizer, liquid crystal cells, and a front polarizer, and is characterized by having the aforementioned optical film between the light-source device and either the front surface of the front polarizer or the rear surface of the rear polarizer.

Supercritical Fluid Treatment of High Molecular Weight Biopolymers

Micro- and nano-sized particles, agglomerates and fibers are generated from high molecular weight water-soluble biopolymers applying supercritical fluid technology. A method of producing micro- or nanoparticles from an aqueous solution of a high molecular weight biopolymer includes the step of spraying the aqueous solution together with a mixture of a compressible gas and a water-soluble co-solvent/antisolvent into a pressurized chamber. The method may be adapted to impregnate the micro- or nanoparticles with a bioactive material. A method for microencapsulating a bioactive material with a biopolymer is also provided. 1. A method of producing micro- or nanoparticles from an aqueous solution of a high molecular weight biopolymer , comprising the step of a) spraying the aqueous solution together with a mixture of a compressible gas and a water-soluble cosolvent/antisolvent into a pressurized chamber.2. The method of further comprising the step of flushing the chamber after finishing the precipitation of particles with sufficient amounts of a compressible gas to remove any residual cosolvent/antisolvent.3. The method of wherein the compressible gas comprises carbon dioxide claim 1 , carbon dioxide and ethanol claim 1 , nitrogen claim 1 , or mixtures thereof.4. The method of wherein the water-soluble cosolvent/antisolvent comprises ethanol claim 3 , acetone or isopropanol claim 3 , or mixtures thereof.5. The method of wherein the aqueous solution and the compressible gas/cosolvent/antisolvent are sprayed into the pressurized chamber through a coaxial nozzle.6. The method of wherein the high molecular weight biopolymer comprises a polysaccharide.7. The method of wherein the polysaccharide has a molecular weight of 70 kDa or more.8. The method of wherein the polysaccharide comprises gum arabic or β-glucan.9. The method of wherein a water-soluble organic solvent is mixed with the aqueous solution prior to step (a).10. The method of comprising the further step of flushing ...

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

A water absorbent resin having less fine powder or powdery dust and a controlled particle size is provided, and the water absorption rate of the water absorbent resin is increased by a simple method at low cost, while maintaining or improving other physical properties such as liquid permeability. Disclosed is a method for producing a polyacrylic acid (salt)-type water absorbent resin powder, which includes, in sequence, a step of polymerizing an aqueous solution of acrylic acid (salt)-type monomer; a step of gel-crushing a gel of a water-containing gel-like crosslinked polymer during polymerization or after polymerization; a step of drying the water-containing gel-like crosslinked polymer; and a step of pulverizing and classifying the dried polymer, wherein water absorbent resin fine particles having a particle size of less than 150 μm or a hydrated-particles thereof is added to a step prior to the drying step, and in the drying step, hot air drying is carried out with a hot air having an average flow velocity of 1.0 to 3.0 [m/s], a dew point of 30° C. to 100° C., and a hot air temperature of 140° C. to 235° C. 1. A method for producing a polyacrylic acid (salt)-type water absorbent resin powder , comprising in sequence;a polymerization step of an aqueous solution of acrylic acid (salt)-type monomer;a gel-crushing step of a water-containing gel-like crosslinked polymer during or after polymerization;a drying step of the water-containing gel-like crosslinked polymer; anda pulverization and a classification step of the dried polymer,wherein,water absorbent resin fine particles having a particle size of less than 150 μm or hydrated-particles thereof are added to a step prior to the drying step, anda hot air drying is carried out in the drying step with a hot air having an average flow velocity of 1.0 to 3.0 [m/s], a dew point of 30 to 100° C., and a hot air temperature of 140 to 235° C.2. The method for producing according to claim 1 , wherein in the drying step claim ...

Resin particles and process for producing same, antiglare film, light-diffusing resin composition, and external preparation

A process for producing resin particles includes a step in which a polymerizable mixture including a polymerizable monomer including at least one of a styrene-based monomer and a (meth)acrylic-based monomer, and a polymerization initiator is absorbed into seed particles in an aqueous medium, without using a dispersant, in the presence of an anionic surfactant not having a polyoxyethylene chain but having an alkyl group; and a step in which the polymerizable monomer is polymerized in an aqueous medium, without using a dispersant, in the presence of an anionic surfactant having a polyoxyethylene chain to thereby obtain resin particles. The resin particles include a resin derived from a polymerizable monomer including at least one of a styrene-based monomer and a (meth)acrylic-based monomer. The proportion by number of particles having a particle diameter in the range of from 80 to 120% of the volume-average particle diameter is 85% or more.

Fine powder of biosourced aliphatic polyester and production method thereof

The invention relates to a method for the production of biosourced aliphatic polyester powder having a volume median diameter of less than 30 μm, comprising: a step consisting in supplying an aliphatic polyester having an inherent viscosity of less than 0.5 dl/g; and a step consisting in grinding the polyester, so as to obtain a polyester powder having a volume median diameter of less than 30 μm. The invention also relates to a powder in which the particles have a volume median diameter of less than 30 μm and are impregnated with a compound selected from among polyols and/or carboxylic acids. The invention further relates to the use of the powder for the production of cosmetic, pharmaceutical and perfume products.

RECYCLING CARBON FIBERS FROM EPOXY USING SOLVENT CRACKING

Methods of extracting recycling carbon fibers are provided. Method of extracting and recycling carbon fibers with furan-2-carbaldehyde are provided and systems for performing the same are also provided. Compositions comprising resin composites, carbon fibers, and/or furan-2-carbaldehyde are also provided. 1. A method of extracting carbon fibers from a resin composite , the method comprising:contacting a resin composite comprising carbon fibers with an extraction solvent to release the carbon fibers from the resin composite, wherein the extraction solvent comprises a cracking agent which is furan-2-carbaldehyde.2. The method of wherein the extraction solvent further comprises one or more swelling agents.3. The method of wherein the swelling agent is dimethylformamide claim 1 , dimethylsulphoxide claim 1 , or propylene carbonate claim 1 , or any combination thereof.4. The method of claim 1 , wherein contacting comprises immersing the resin in the extraction solvent or exposing the resin to vapors of the extraction solvent.5. (canceled)6. The method of claim 1 , further comprising purifying the released carbon fibers to provide purified carbon fibers.7. The method of claim 1 , wherein the extraction solvent further comprises at least one additional cracking agent in addition to furan-2-carbaldehdye.8. The method of claim 1 , wherein the resin composite is an epoxy composite claim 1 , polyester composite claim 1 , polyamide composite claim 1 , or a polyimide composite.9. The method of claim 8 , wherein the epoxy composite is bisphenol-A epoxy claim 8 , Bisphenol-F epoxy claim 8 , or Novolac epoxy.10. (canceled)11. The method of claim 1 , wherein contacting step is performed at a temperature of about 50 degrees centigrade to about 90 degrees centigrade.12. The method of claim 1 , wherein the method is performed under anhydrous conditions or at a neutral pH.13. (canceled)14. The method of claim 2 , wherein the purifying step comprises filtering the released carbon fibers ...

Enhancing the Physical Properties of Semi-Crystalline Polymers via Solid-State Shear Pulverization

Solid-state shear pulverization of semi-crystalline polymers and copolymers thereof and related methods for enhanced crystallization kinetics and physical/mechanical properties. 1. (canceled)2. A method of affecting crystallization kinetics of a semi-crystalline homopolymer , said method comprising:providing a solid semi-crystalline homopolymer component, said homopolymer a single homopolymer comprising less than about 50% crystallinity; andapplying a mechanical energy to said single homopolymer through solid-state shear pulverization in the presence of cooling at least partially sufficient to maintain said homopolymer in a solid state during said pulverization, said pulverization at least partially sufficient to induce at least one of polymer scission and indigenous nucleation sites within said homopolymer.3. The method of wherein said crystallization kinetic effect is selected from at least one of increased onset crystallization temperature and reduced isothermal crystallization half-time.4. The method of wherein said single homopolymer is selected from polyesters and polyolefins.5. The method of wherein said single homopolymer is a polyester and said pulverization increases polymer scission.6. The method of wherein said single homopolymer is a polyester claim 4 , and said pulverization increases said nucleation sites.7. The method of wherein said single homopolymer is a polyolefin claim 4 , and said pulverization increases said nucleation sites.8. The method of wherein polymer scission is at least partially sufficient to affect one of increased polymer branching and decreased polymer molecular weight claim 2 , said single homopolymer not a polyolefin.9. The method of wherein said pulverized homopolymer is incorporated into an article of manufacture.10. A method of affecting crystallization kinetics of a semi-crystalline homopolymer claim 2 , said method comprising:providing a solid semi-crystalline homopolymer component, said homopolymer a single homopolymer ...

Production method of polycarbonate, and polycarbonate pellet

The present invention relates to a method for producing a polycarbonate having excellent characteristics such as hue and mechanical properties with a stable quality and a high yield by solving a plurality of problems as those described above in producing a polycarbonate by using a specific dihydroxy compound exhibiting low thermal stability as compared with bisphenols and having a —CH 2 —O— structure. The polycarbonate obtained by polycondensation in the present invention is a polycarbonate having an appropriate viscosity despite decrease in the reaction temperature, providing for a color tone less susceptible to yellowing, and exhibiting excellent mechanical properties.

HALOGENATED POLYMER COMPOSITE COMPOSITION, ITS MANUFACTURING PROCESS AND ITS USE

The present invention relates to a halogenated polymer composite composition that encapsulates a mineral filler. In particular the present invention relates to a polymer composite composition comprising at least one halogen containing polymer and at least one mineral filler, characterized that the halogen containing polymer and the mineral filler are both in form of a dispersion in aqueous phase during the mixing of the halogen containing polymer and the mineral filler. More particularly the present invention relates to a manufacturing method for a polymer composite composition comprising the steps of mixing of at least one halogen containing polymer with at least one mineral filler and drying the mixture of previous step wherein the halogen containing polymer and the mineral filler in step are in form of a dispersion in aqueous phase. 1. A polymer composite composition comprising:a) at least one halogen containing polymer,b) at least one mineral filler,wherein the halogen containing polymer and the mineral filler are both in form of a dispersion in aqueous phase during the mixing of the halogen containing polymer and the mineral filler.2. The polymer composite composition according to wherein the composition is a dry powder comprising less than 3 wt % humidity.3. The polymer composite composition according to wherein the halogen containing polymer is a thermoplastic polymer having a glass transition temperature as measured by differential scanning calorimetry of at least 40° C.4. The polymer composite composition according to wherein the halogen containing polymer was synthesized by suspension polymerization claim 1 , micro-suspension polymerization or emulsion polymerization in aqueous phase.5. The polymer composite composition according to wherein the halogen is chlorine or fluorine.6. The polymer composite composition according to wherein the halogen is chlorine.7. The polymer composite composition according to wherein the halogen containing polymer is a homo- ...

Gelatin particles, method for producing gelatin particles, gelatin particle-containing cell, and method for producing gelatin particle-containing cell

Disclosed herein are gelatin particles including gelatin, wherein when a major-axis length of dried gelatin particles is defined as a and a major-axis length of gelatin particles after swelling treatment obtained by immersing the dried gelatin particles in water at 40° C. under an atmospheric pressure for 60 minutes is defined as b, swelling degree represented by b/a is 1.0 or more but 10.0 or less, and wherein the gelatin particles after swelling treatment have a particle diameter of 1.0 nm or more but 5.0 μm or less. The gelatin particles are easily taken up by cells themselves.

PROCESS FOR PREPARING POLYALKENAMERS FOR PACKAGING APPLICATIONS

The present invention relates to a process for producing cycloalkenamer-containing compositions, comprising the steps of: 1. A process for producing a polyalkenamer-containing composition , comprising the steps of:a) converting at least one cycloalkene by ring-opening metathetic polymerization to obtain a polyalkenamer-containing product mixture, and{'sub': '2', 'b) working up the product mixture to remove monomers and oligomers of the cycloalkenes to obtain the polyalkenamer-containing composition by extraction with CO,'}wherein the polyalkenamers are polymers of cycloalkenes which comprise at least five cycloalkane monomer units,wherein the extraction comprises at least the consecutive stages:{'sub': '2', 'b0) an extraction with liquid CO,'}{'sub': '2', 'b1) an extraction with supercritical CO,'}{'sub': '2', 'b2) an extraction with gaseous CO,'}{'sub': '2', 'b0) an extraction with liquid CO, and'}{'sub': '2', 'b3) an extraction with supercritical CO.'}2. The process according to claim 1 , wherein extraction in stage b2 is conducted at a temperature in the range from 0° C. to 99° C. and a pressure in the range from 0 bar to 73 bar claim 1 , with adjustment of pressure and temperature with respect to one another such that the COremains in gaseous form.3. The process according to claim 2 , wherein the pressure is below and the temperature is above the critical value for CO.4. The process according to claim 1 , wherein the extraction in stages b1 and b3 is conducted at a temperature in the range from 31° C. to 99° C. and a pressure in the range from 74 bar to 1000 bar.5. The process according to claim 1 , wherein the relative mass throughput is between 10 kg and 500 kg of COper polyalkenamer-containing product mixture.6. The process according to claim 1 , wherein a separation of the COextractant from monomers and oligomers is effected after step b3.7. The process according to claim 6 , wherein the COfor separation is gaseous.8. The process according to claim 6 , ...

RESIN POWDER, SEALING MATERIAL, ELECTRONIC COMPONENT, AND RESIN POWDER MANUFACTURING METHOD

Resin powder includes aggregates of spherical particles of a resin composition. The resin composition contains: a resin component including a thermosetting resin; and a non-resin component including at least one electrically insulative inorganic particle and/or at least one magnetic particle. 1. Resin powder comprising aggregates of spherical particles of a resin composition ,the resin composition containing: 'a non-resin component including at least one electrically insulative inorganic particle and/or at least one magnetic particle.', 'a resin component including a thermosetting resin; and'}2. The resin powder of claim 1 , wherein 'a core including the at least one electrically insulative inorganic particle and the resin component covering the core.', 'each of the spherical particles includes'}3. The resin powder of claim 1 , wherein 'a core including the at least one magnetic particle and the resin component covering the core.', 'each of the spherical particles includes'}4. The resin powder of claim 1 , whereinin volume particle size distribution, a mean particle size of the resin powder is larger than or equal to 10 μm and smaller than or equal to 200 μm.5. The resin powder of claim 1 , whereinin the volume particle size distribution, a ratio of the spherical particles whose particle size is larger than or equal to 50 μm and smaller than or equal to 100 μm to the resin powder is greater than or equal to 70 wt. %.6. The resin powder of claim 1 , whereinthe volume particle size distribution has one frequency peak.7. The resin powder of claim 1 , whereinan average circularity of the aggregates is greater than or equal to 0.90 and less than or equal to 1.00.8. The resin powder of claim 1 , whereinthe resin component is in an uncured state.9. The resin powder of claim 1 , whereinthe resin powder further contains nanofiller.10. The resin powder of claim 9 , whereina content of the nanofiller is greater than or equal to 0.1 wt. % and less than or equal to 2 wt. % with ...

RHEOLOGY MODIFICATION BY POROUS GEL PARTICLES

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

Remediation Of Agglomerated Flow Improvers

The present embodiment can teach a method of feeding to a materials processor a mixture containing an agglomerated drag reducer. The mixture is then homogenized to produce a remediated drag reducer. The maximum particle size diameter of the agglomerated drag reducing polymer is at least 5% larger than the maximum particle diameter of the remediated drag reducer. 1. A method comprising:feeding to a materials processor an agglomerated drag reducer; andhomogenizing the mixture to produce a remediated drag;wherein the maximum particle size diameter of the agglomerated drag reducing polymer is at least 5% larger than the maximum particle size diameter of the produced remediated drag reducer; and wherein the tip speed of the materials processor is from about 30 ft/sec to 60 ft/sec.2. The method of claim 1 , wherein the agglomerated drag reducing polymer is incapable of flowing through a 10 mm pore filter without leaving any substantial solids residue.3. The method of claim 1 , wherein the agglomerated drag reducing polymer is incapable of flowing through a 3 mm pore filter without leaving any solids residue.4. The method of claim 1 , wherein the agglomerated drag reducing polymer is incapable of being injected through an injection pump using ¼ to 1 inch diameter check valves without clogging the injection pump.5. The method of claim 1 , wherein the agglomerated drag reducing polymer has been stored at a temperature above 90° F. for a certain period of time.6. The method of claim 1 , wherein the minimum shear rate of the materials processor is 2 claim 1 ,000 sec.8. The method of claim 7 , wherein the agglomerated drag reducing polymer is incapable of flowing through a 10 mm pore filter without leaving any substantial solids residue.9. The method of claim 7 , wherein the agglomerated drag reducing polymer is incapable of flowing through a 3 mm pore filter without leaving any substantial solids residue.10. The method of claim 7 , wherein the agglomerated drag reducing ...

COMPOSITIONS INCORPORATING DIELECTRIC ADDITIVES FOR PARTICLE FORMATION, AND METHODS OF PARTICLE FORMATION USING SAME

A method of forming particles that includes performing a strong force attenuation of a mixture to form pre-particles. The mixture including a base compound and a dielectric additive having an elevated dielectric constant dispersed therein. The pre-particles are then dielectrically spun in an electrostatic field to further attenuate the pre-particles and form the particles. 19.-. (canceled)10. A composition for particle formation , comprising:a base compound; anda dielectric additive selected to encourage dielectrophoretic attenuation of the base compound during dielectric spinning.11. The composition of claim 10 , wherein the dielectric additive includes a mild dielectric additive having a dielectric constant above 5.12. The composition of claim 10 , wherein the dielectric additive includes a moderate dielectric additive having a dielectric constant above 1013. The composition of claim 10 , wherein the dielectric additive includes a strong dielectric additive having a dielectric constant above 100.14. The composition of claim 10 , wherein the dielectric additive includes polyglycerol-3.15. The composition of claim 10 , wherein the dielectric additive includes titanium dioxide (TiO).16. The composition of claim 10 , wherein the dielectric additive includes barium titanate.17. The composition of claim 10 , wherein the dielectric additive includes a ceramic dielectric.18. The composition of claim 10 , wherein the dielectric additive includes high-relative permittivity nanoparticles dispersed within the base compound.19. The composition of claim 10 , further comprising a dispersant selected to aid in dispersing the dielectric additive within the base compound.20. The composition of claim 19 , wherein the dispersant includes sodium stearate.21. The composition of claim 19 , wherein the dispersant includes sodium oleate.22. The composition of claim 19 , wherein the dispersant includes stearic acid.23. The composition of claim 10 , further comprising a viscosity-reduction ...

Super Absorbent Polymer and Preparation Method for the Same

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

ETHYLENE-VINYL ALCOHOL COPOLYMER COMPOSITION PELLET AND PROCESS FOR PRODUCING SAID ETHYLENE-VINYL ALCOHOL COPOLYMER COMPOSITION PELLET

The present invention provides ethylene-vinyl alcohol copolymer composition pellet reduced in coloration. The ethylene-vinyl alcohol copolymer composition pellet of the invention include an ethylene-vinyl alcohol copolymer (A), a polyamide resin (B), and an alkaline earth metal salt (C) and have a yellowness index (YI) value of 10 or less when examined with a spectral color-difference meter by a transmission method. 1. An ethylene-vinyl alcohol copolymer composition pellet comprising:an ethylene-vinyl alcohol copolymer (A),a polyamide resin (B), andan alkaline earth metal salt (C),wherein a yellowness index (YI) value obtained by measuring the pellet with a spectral color-difference meter by a transmission method is 10 or less.2. The ethylene-ethylene-vinyl alcohol copolymer composition pellet according to claim 1 ,wherein a mass ratio ((A)/(B)) of the ethylene-vinyl alcohol copolymer (A) and the polyamide resin (B) is from 60/40 to 98/2.3. The ethylene-vinyl alcohol copolymer composition pellet according to claim 1 ,wherein a content of the alkaline earth metal salt (C), in terms of metal amount, is 10-200 ppm based on a sum of the ethylene-vinyl alcohol copolymer (A) and the polyamide resin (B).4. The ethylene-vinyl alcohol copolymer composition pellet according to claim 1 , which further contain an antioxidant.5. An ethylene-vinyl alcohol copolymer composition molding claim 1 , which is obtained by melt-molding the ethylene-vinyl alcohol copolymer composition pellet according to .6. A process for producing ethylene-vinyl alcohol copolymer composition pellet having a yellowness index (YI) value claim 1 , as measured with a spectral color-difference meter by a transmission method claim 1 , of 10 or less claim 1 , comprising:melt-kneading a resin composition comprising an ethylene-vinyl alcohol copolymer (A), a polyamide resin (B), and an alkaline earth metal salt (C) using a melt-kneading device,wherein a temperature of an ethylene-vinyl alcohol copolymer ...

Ultrahigh-Molecular-Weight Polyethylene Powder

The ultrahigh-molecular-weight polyethylene powder of the present invention is an ultrahigh-molecular-weight polyethylene powder having a viscosity-average molecular weight Mv of 10×10or higher and 1000×10or lower, wherein viscosity-average molecular weight Mv(A) of a kneaded product obtained by kneading under specific kneading conditions, and the Mv satisfy the following relationship: “{Mv−Mv(A)}/Mv is 0.20 or less”, and the ultrahigh-molecular-weight polyethylene powder contains an ultrahigh-molecular-weight polyethylene powder having a particle size of 212 μm or larger, wherein the powder having a particle size of 212 μm or larger has an average pore volume of 0.6 ml/g or larger and an average pore size of 0.3 μm or larger. 2. The ultrahigh-molecular-weight polyethylene powder according to claim 1 , wherein a proportion of an ultrahigh-molecular-weight polyethylene powder having a particle size of 53 μm or smaller is less than 40% by mass per 100% by mass of the ultrahigh-molecular-weight polyethylene powder.3. The ultrahigh-molecular-weight polyethylene powder according to claim 1 , wherein the bulk density of the powder having a particle size of 212 μm or larger is 0.20 g/cmor higher and 0.60 g/cmor lower.4. The ultrahigh-molecular-weight polyethylene powder according to claim 1 , wherein the ultrahigh-molecular-weight polyethylene powder has a magnesium content of 0.1 ppm or higher and 20 ppm or lower.5. The ultrahigh-molecular-weight polyethylene powder according to claim 1 , wherein the ultrahigh-molecular-weight polyethylene powder has a titanium content of 0.1 ppm or higher and 5 ppm or lower.6. The ultrahigh-molecular-weight polyethylene powder according to claim 1 , wherein the ultrahigh-molecular-weight polyethylene powder has an aluminum content of 0.5 ppm or higher and 10 ppm or lower.7. The ultrahigh-molecular-weight polyethylene powder according to claim 1 , wherein the ultrahigh-molecular-weight polyethylene powder has a silicon content of 0.1 ppm ...

Method for producing molecular assemblies, and device for producing molecular assemblies

The present invention relates to a method and an apparatus both for producing molecular assemblies of an amphiphilic block polymer. The method of the present invention includes: applying a polymer solution ( 45 ) containing an amphiphilic block polymer and a solvent in a layered shape on a planar base member ( 11 ) in a film forming part ( 40 ); forming a polymer film on the base member ( 13 ) by removing the solvent from the coated layer of the solution in a drying part ( 30 ); and producing molecular assemblies by bringing the polymer film into contact with a water-based liquid ( 55 ) in a molecular assembly forming part ( 50 ). The amphiphilic block polymer has a hydrophilic block chain and a hydrophobic block chain. The hydrophilic block chain preferably has 20 or more sarcosine units, and the hydrophobic block chain preferably has 10 or more lactic acid units.

COMPOSITE MATERIAL AND METHOD FOR PRODUCING SAME

A composite material in which a graphene-like carbon material has excellent adhesion to a substrate composed of resin, and a method for producing the same are provided. The composite material comprises a substrate composed of resin and a graphene-like carbon material layer provided so as to cover at least part of the surface of the substrate, wherein graphene-like carbon is closely attached to the surface of the substrate. The method for producing a composite material comprises bringing a graphene-like carbon material into contact with at least part of the surface of a substrate composed of resin and heating under the action of a supercritical or subcritical fluid. 1. A composite material comprising a substrate composed of resin and a graphene-like carbon material layer provided so as to cover at least part of the surface of the substrate , wherein graphene-like carbon is closely attached to the surface of the substrate.2. The composite material according to claim 1 , wherein some of the graphene-like carbon penetrates the substrate from the surface of the substrate toward the inner part.3. The composite material according to claim 1 , wherein the substrate composed of resin is fine resin particles and the graphene-like carbon material layer is formed so as to cover the outer surface of the fine resin particles.4. The composite material according to claim 1 , wherein the substrate composed of resin is a sheet substrate and the graphene-like carbon material layer is provided on at least one side of the sheet substrate.5. The composite material according to claim 1 , wherein the graphene-like carbon material is composed of graphene or lamina graphite.6. (canceled)7. (canceled) This application is a Continuation application of patent application Ser. No. 13/885,283, filed on May 14, 2013 which is a 371 application of Application No. PCT/JP2012/063619, filed on May 28, 2012 which is based on Japanese Patent Application No. 2011-125471 filed on Jun. 3, 2011, the entire ...

PREPARATION METHOD OF CITRIC ACID MODIFIED STARCH WITH DIGESTION-RESISTANT PROPERTY

The method employs citric acid as the modifier, combines the citric acid with starch, achieves the good modification effect of starch at high temperature, and improves the digestion-resistant property of starch. Citric acid itself is nontoxic, the process conditions are mild and the treatment methods are relatively safe, which shows very high practical values. In the method, starch and citric acid are cross-linked by using the infrared treatment technology, and the dry heating treatment is used to promote the modifier citric acid into starch, thereby achieving significant and stable modification effects, and high modification efficiency. 1. A method for preparing modified starch with a high degree of substitution , comprising the following steps:(1) preparing a citric acid aqueous solution;(2) adding starch into the citric acid aqueous solution for a reaction for a period of time to get a mixture of the citric acid and the starch;(3) placing the mixture of the citric acid and the starch obtained from step (2) under a condition of infrared radiation for a reaction for a period of time to get modified starch with a high degree of substitution;wherein an intensity of the infrared radiation in step (3) is 250° C.;a reaction time of the infrared radiation is 5 min to 7 min;the infrared radiation is mid-infrared radiation, with a wavelength ranging from 3.2 μm to 7.6 μm.2. (canceled)3. (canceled)4. The method according to claim 1 , wherein in step (1) claim 1 , a mass concentration of citric acid in the citric acid aqueous solution is 20% to 70%.5. The method according to claim 1 , wherein in step (2) claim 1 , a mass ratio of starch dry matter to the citric acid is 1:5 to 5:1.5. The method according to claim 1 , wherein after step (2) of obtaining the mixture of the citric acid and the starch claim 1 , the method further comprises the steps of drying the mixture of citric acid and starch claim 1 , then crushing and sieving claim 1 , and collecting sieved powder.7. The ...

ANTI-ULTRAVIOLET FLAKY CELLULOSE MATERIAL, PREPARATION METHOD AND USE THEREOF

The present invention discloses an anti-ultraviolet flaky cellulose material which is characterized in that the cellulose material has a flaky morphology, a particle width of 5-200 μm and a thickness of 0.01-10 μm, and the flaky cellulose material can block transmission of ultraviolet ray within the range of UVA (320-400 nm) and UVB (280-320 nm). Meanwhile, the present invention also provides a preparation method of the flaky cellulose material and a use thereof. 1. An anti-ultraviolet flaky cellulose material , wherein the cellulose material has a flaky morphology , a particle width of 5-200 μm and a thickness of 0.01-10 μm , and the cellulose material can block transmission of ultraviolet ray within a range of UVA (320-400 nm) and UVB (280-320 nm).2. The anti-ultraviolet flaky cellulose material according to claim 1 , wherein the particle width of the cellulose material is 30-50 μm.3. The anti-ultraviolet flaky cellulose material according to claim 1 , wherein the cellulose is selected from natural cellulose or regenerated cellulose.4. The anti-ultraviolet flaky cellulose material according to claim 3 , wherein the natural cellulose is selected from natural herbaceous plants or natural woody plants claim 3 , and the regenerated cellulose is selected from one or more of viscose fiber claim 3 , copper ammonia fiber claim 3 , Tencel and alkali urea solution fiber.5. A preparation method of the anti-ultraviolet flaky cellulose material according to claim 1 , comprising the following steps:1) mixing the cellulose material and the solid polymer abrasive material, wherein, after milled, the morphology of the cellulose becomes flaky, thereby obtaining the flaky cellulose material; and2) separating the flaky cellulose material obtained in step 1) from the solid polymer abrasive material to obtain the anti-ultraviolet flaky cellulose material.6. The method according to claim 5 , wherein the mixing in step 1) is to mix the solid polymer abrasive material and the cellulose ...

COMPOSITE PARTICLES, COATING POWDER, COATING FILM, LAMINATE, AND METHOD FOR PRODUCING COMPOSITE PARTICLES

An object of the present invention is to provide a particulate composite which is free from fluorosurfactants having a high environmental impact, and can form a coating film that has excellent adhesion to a substrate and is uniformly adhered to the substrate even if containing a small amount of an adhesive component. The particulate composite of the present invention contains: a fluoropolymer; an adhesive polymer; and less than 0.1 ppm of a fluorosurfactant. 1. A particulate composite comprising:a fluoropolymer;an adhesive polymer; andless than 0.1 ppm of a fluorosurfactant.2. The particulate composite according to claim 1 ,which is obtainable by bonding particles of the fluoropolymer and particles of the adhesive polymer.3. The particulate composite according to claim 1 ,which is obtainable by bonding particles of the fluoropolymer and particles of the adhesive polymer with a device configured to cause centrifugal diffusion and a vortex.4. The particulate composite according to claim 1 ,wherein the particles are floating in the water without making the water cloudy after the particles are dispersed in water and the resulting dispersion is left to stand for a sufficient amount of time.5. The particulate composite according towhich has an average particle size of 1 to 1000 μm.6. The particulate composite according to claim 1 ,which comprises the fluoropolymer and the adhesive polymer in a mass ratio of 50/50 to 99/1.7. The particulate composite according to claim 1 ,wherein the adhesive polymer is at least one compound selected from the group consisting of polyimide, polyamide-imide, polyamide, polyamic acid, epoxy resin, polysulfide, polyarylene sulfide, and polyether sulfone.8. The particulate composite according to claim 1 ,wherein the fluoropolymer is at least one fluororesin selected from the group consisting of a tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer, a tetrafluoroethylene-hexafluoropropylene copolymer, and a tetrafluoroethylene-ethylene ...

Method and apparatus for producing polyacrylic acid (salt)-based water absorbent resin

The purpose of the present invention is to provide a method for producing a water absorbent resin in which a water absorbent resin having excellent properties can be obtained effectively. The present invention relates to a method for producing a polyacrylic acid (salt)-based water absorbent resin, which includes a polymerization step of polymerizing an aqueous monomer solution containing a polymerization inhibitor, acrylic acid (salt) and an internal cross-linking agent to produce a water-containing gel-like cross-linked polymer, a gel-crushing step of performing the gel-crushing of the water-containing gel-like cross-linked polymer simultaneously with or subsequent to the polymerization to produce a particulate water-containing gel-like cross-linked polymer, and a drying step of supplying the particulate water-containing gel-like cross-linked polymer to a continuous through-flow belt-type dryer by a traverse conveyor to dry the particulate water-containing gel-like cross-linked polymer, in which the belt temperature of the traverse conveyor is 40 to 120° C. and/or the water soluble component in the particulate water-containing gel-like cross-linked polymer on the traverse conveyor is 10% by weight or less and the water soluble component is increased after the drying step.

METHOD AND APPARATUS FOR FILM TREATMENT

A coated polymeric film is comminuted, and is advanced between successive processing stations in a coating removal system in a stream of conveyance fluid driven through a conduit reaching between the successive processing stations. 1. A method comprising:forming comminuted material by comminuting a coated polymeric film; andadvancing the comminuted material between successive processing stations in a coating removal system by conveying the comminuted material in a stream of conveyance fluid driven through a conduit reaching between the successive processing stations.2. A method as defined in wherein the stream of conveyance fluid comprises a stream of air.3. A method as defined in wherein the stream of conveyance fluid comprises an aqueous solution for removing coating material from the comminuted material.4. A method as defined in claim 1 , wherein the comminuting comprises shredding.5. A method as defined in claim 1 , wherein the comminuting comprises granulating.6. A method comprising:forming comminuted material by comminuting a coated polymeric film;blowing the comminuted material through a conduit;discharging the comminuted material from the conduit into a milling device containing an aqueous solution for removing coating material from the comminuted material; andmixing the comminuted material with the aqueous solution in the milling device.7. A method as defined in claim 6 , further comprising pumping a mixture of the comminuted material and the aqueous solution through a conduit from the milling device to a straining device claim 6 , and straining the mixture in the straining device.8. A method as defined in claim 7 , wherein the mixture is moved through the straining device by an auger.9. A method as defined in claim 7 , further comprising pumping the mixture through a conduit from the straining device to a washing device claim 7 , and rinsing the aqueous solution from the mixture with water in the washing device.10. A method as defined in claim 9 , further ...

ANTIBACTERIAL RESIN AND MANUFACTURING METHOD THEREFOR

A method for manufacturing an antibacterial resin according to the present invention includes the following steps. The method includes: a preparation step of preparing synthetic resin powder and an antibacterial additive; a dispersion step of introducing into a mixer the synthetic resin powder together with iron balls having a pointed protrusion formed on an outer surface thereof and dispersing particles; a dispersion and mixing step of introducing the antibacterial additive into the mixer containing the synthetic resin powder, followed by dispersion and mixing; a pellet forming step of separating the iron balls and forming the mixture of the synthetic resin powder and the antibacterial additive into pellets by melting, extrusion and cutting; and a product producing step of introducing the pellets into an injection molding machine to produce an antibacterial resin product; wherein white charcoal powder is included in the antibacterial additive in the mixing step. 1a preparation step of preparing synthetic resin powder and an antibacterial additive;a dispersion step of, after the preparation step, introducing into a mixer the synthetic resin powder together with iron balls having a pointed protrusion formed on an outer surface thereof and dispersing particles of the powder;a dispersion and mixing step of after the dispersion step, introducing the antibacterial additive into the mixer containing the synthetic resin powder, followed by dispersion and mixing;a pellet forming step of, after the dispersion and mixing step, separating the iron balls and forming the mixture of the synthetic resin powder and the antibacterial additive into pellets by melting, extrusion and cutting; anda product producing step of, after the pellet forming step, introducing the pellets into an injection molding machine to produce an antibacterial resin product;wherein white charcoal powder is included in the antibacterial additive in the mixing step;{'b': 110', '120', '110', '130', '120', '110 ...

Spray drying process for low aspect ratio particles comprising poly[(methyl methacrylate)-co-(methacrylic acid)]

Embodiments of a spray-drying process for producing low aspect ratio particles of poly[(methyl methacrylate)-co-(methacrylic acid)] (PMMAMA) are disclosed. In some examples, at least 95% of PMMAMA-containing particles made by the process have an aspect ratio <10. The particles may further include an active ingredient and/or an excipient.

Polyethylene Powder, Formed Product and Microporous Membrane

A polyethylene powder having an average particle size of 70 μm or more and less than 150 μm, wherein a compressive strength at a time of 10% displacement of particles having a particle size of 60 μm is 1.2 times or more and less than 2.5 times based on a compressive strength at a time of 10% displacement of particles having a particle size of 100 μm. 1. A polyethylene powder having an average particle size of 70 μm or more and less than 150 μm , whereina compressive strength at a time of 10% displacement of particles having a particle size of 60 μm is 1.2 times or more and less than 2.5 times based on a compressive strength at a time of 10% displacement of particles having a particle size of 100 μm.2. The polyethylene powder according to claim 1 , having a viscosity average molecular weight (Mv) of 100 claim 1 ,000 or more and 4 claim 1 ,000 claim 1 ,000 or less.3. The polyethylene powder according to claim 1 , wherein the compressive strength at the time of 10% displacement of particles having a particle size of 60 μm is 5.0 MPa or more and less than 15.0 MPa.4. The polyethylene powder according to claim 1 , whereina content of particles having a particle size of more than 300 μm is less than 3.0% by mass, anda content of particles having a particle size of less than 75 μm is 0.1% by mass or more and less than 10.0% by mass.5. The polyethylene powder according to claim 1 , having a tap density of 0.50 g/cmor more and 0.65 g/cmor less.6. (canceled)7. The polyethylene powder according to claim 1 ,having a melting heat amount ΔH1 of 210 (J/g) or more and less than 240 (J/g) measured by a differential scanning calorimeter (DSC) andhaving a half value width of a melting peak Tm1 on a melting curve of 2.0° C. or more and less than 6.0° C.8. The polyethylene powder according to claim 1 , having a total content of Ti and Al of 1 ppm or more and 10 ppm or less.9. A formed product of the polyethylene powder according to .10. The formed product according to claim 9 , being a ...

Method and Apparatus for Surface Chemical Functionalization of Powders and Nanoparticles

A method and apparatus is provided for the modification of the surface chemistry of solid nano- and micro-particles in order to tailor the properties and functions of these particles. The method generally involves the generation of an atmospheric plasma glow discharge and energetic species that undergo chemical reaction with the surface of the primary particles. The process includes the generation of energetic species to initiate reaction, optional delivery of a precursor fluid, optional delivery of chemical species for grafting, and delivery of separated and de-agglomerated particles into the plasma discharge exiting the plasma generation chamber.

PROTEIN SUSTAINED-RELEASE INJECTABLE FORMULATION

The present invention provides sustained-release pharmaceutical formulations for administering proteins to the eye. In particular, the invention provides formulations comprising single chain antibodies and hydrophobic polyester hexylsubstituted poly(lactic acid) (hexPLA). The invention further provides processes for the production of sustained-release pharmaceutical formulations and medical uses thereof. 1. A sustained-release pharmaceutical formulation for ocular administration to a subject , comprising a single chain antibody (scFv) and hexylsubstituted poly(lactic acid) (hexPLA).2. The formulation of claim 1 , wherein the scFv is present in a final concentration of at least about 1.25% (w/w).3. The formulation of claim 1 , wherein the scFv is present in a final concentration of at least about 2.5% (w/w).4. The formulation of claim 1 , wherein the scFv is present in a final concentration of at least about 5.0% (w/w).5. The formulation of claim 1 , wherein the hexPLA is present at a molecular weight of at least about 1500 g/mol.6. The formulation of claim 1 , wherein the hexPLA is present at a molecular weight of at least about 2500 g/mol.7. The formulation of claim 1 , wherein the hexPLA is present at a molecular weight of at least about 3500 g/mol.8. An intravitreal sustained-release depot comprising the formulation of .9. A delivery system comprising the sustained-release pharmaceutical formulation of and a syringe.10. A method of treating an ocular disorder in a patient claim 1 , comprising administering to the patient an effective amount of the sustained-release pharmaceutical formulation of .11. The method of claim 10 , wherein the ocular disorder is a retinal disorder.12. A process for the preparation of a sustained-release pharmaceutical formulation claim 10 , the process comprising cryo-milling a single chain antibody and hexylsubstituted poly(lactic acid) (hexPLA).13. A stable single chain antibody formulation claim 10 , comprising a single chain antibody ...

METHOD FOR GRANULATING PARTICLE-CONTAINING MATERIAL OBTAINED FROM INDUSTRIAL PROCESSES, THE GRANULATE THUS PRODUCED, AND USE THEREOF

A method for granulating a particle-containing material from an industrial process includes mixing the particle-containing material in the presence of water with a material that consists of or comprises a water-absorbing and swellable organic polymer compound which is insoluble in water so as to obtain granulates. 146-. (canceled)47. A method for granulating a particle-containing material from an industrial process , the method comprising:mixing the particle-containing material in the presence of water with a material that consists of or comprises a water-absorbing and swellable organic polymer compound which is insoluble in water so as to obtain granulates.48. The method as recited in claim 47 , whereinthe water is humidity adhering to the particle-containing material; and/orthe water is added to the particle-containing material or to a blend of the particle-containing material and the material that consists of or comprises a water-absorbing and swellable organic polymer compound which is insoluble in water.49. The method as recited in claim 47 , wherein the particle-containing material has a humidity of 20 to 85 wt.-% claim 47 , based on a weight of the particle-containing material.50. The method as recited in claim 47 , wherein the particle-containing material is provided as a slurry claim 47 , a sludge claim 47 , a paste claim 47 , a filter cake claim 47 , or as a salt comprising crystal water claim 47 , or the particle-containing material comprises at least one of the slurry claim 47 , the sludge claim 47 , the paste claim 47 , the filter cake claim 47 , and the salt comprising crystal water.51. The method as recited in claim 47 , wherein the particle-containing material is provided as a dry powder claim 47 , a dust claim 47 , or as a mixture of the dry powder and the dust.52. The method as recited in claim 51 , wherein the method further comprises:blending the dry powder, the dust, or the mixture of the dry powder and the dust with the material that consists ...

METHOD FOR PRODUCING POROUS GEL-CONTAINING LIQUID, POROUS GEL-CONTAINING LIQUID, METHOD FOR PRODUCING HIGH-VOID LAYER, METHOD FOR PRODUCING HIGH-VOID POROUS BODY, AND METHOD FOR PRODUCING LAMINATED FILM ROLL

The present invention aims to provide a method for producing a porous gel-containing liquid that is inexpensive and excellent in homogeneity. The porous gel-containing liquid production method according to the present invention is a method including: a pulverization step of pulverizing a gel of a porous body, wherein the pulverization step is carried out as multi-stage pulverization including a plurality of pulverization stages. 1. A method for producing a porous gel-containing liquid , the method comprising:a pulverization step of pulverizing a gel of a porous body,wherein the pulverization step is carried out as multi-stage pulverization comprising a plurality of pulverization stages, andat least one of the plurality of pulverization stages is performed by high pressure media-less pulverization.2. The method according to claim 1 , whereina pulverization process used in at least one of the plurality of pulverization stages is different from a pulverization process used in at least one other pulverization stage.3. The method according to claim 1 , whereinthe porous gel-containing liquid is a sol solution containing particles obtained by pulverizing the gel of the porous body.4. The method according to claim 1 , whereinthe plurality of pulverization stages are each performed in a liquid.5. The method according to claim 1 , whereinthe plurality of pulverization stages comprise first and second pulverization stages for pulverizing the gel of the porous body,the first pulverization stage is a pulverization stage in which the gel of the porous body is pulverized into sol particles having a volume average particle size from 1 to 100 μm, andthe second pulverization stage is a pulverization stage in which, after the first pulverization stage, the sol particles of the porous body are further pulverized into particles having a volume average particle size from 10 to 1000 nm.6. The method according to claim 5 , wherein.the first pulverization stage and the second pulverization ...

COMPOSITE POWDER IN WHICH POROUS POLYMER IS IMPREGNATED WITH SCORIA POWDER PARTICLES, COSMETIC COMPOSITION CONTAINING SAME, AND PROCESS FOR PRODUCING SAME

The present invention relates to a composite powder of scoria powder and a porous polymer. More particularly, the present invention relates to a composite powder (scoria sphere) in which the surface and the inside of a porous polymer are uniformly impregnated with scoria powder particles prepared by spraying in one-step a dispersion in which scoria powder is dispersed in a solution in which a polymer is dissolved; a cosmetic composition containing the same; and a process for producing the same. When the scoria impregnated powder, of the present invention, in which the porous polymer is uniformly impregnated with the scoria powder particles, is formulated as a cosmetic composition, the porous polymer supplements the sebum absorption performance of the scoria miniaturized in a micro size, and thus the sebum absorption power is greatly improved. 1. A composite powder in which a porous polymer is impregnated with scoria powder particles.2. The composite powder according to claim 1 , wherein the average particle diameter of the scoria powder is 0.1 to 2 μm.3. The composite powder according to claim 1 , wherein the scoria powder is impregnated in an amount of 50 to 90% by weight based on the total weight of the composite powder.4. The composite powder according to claim 1 , wherein the porous polymer comprises at least one selected from the group consisting of poly-(methyl methacrylate) claim 1 , poly-(vinyl pyrrolidone) claim 1 , poly-(caprolactone) claim 1 , poly-(L-lactic acid) claim 1 , poly-(ethylene oxide) claim 1 , poly-(propylene oxide) claim 1 , poly-(dimethyl siloxane) claim 1 , poly-(lactic-co-glycolic acid) claim 1 , polystyrene and a copolymer thereof.5. The composite powder according to claim 1 , wherein the composite powder has the average particle diameter of 5 to 20 μm and is a sphere.6. The composite powder according to claim 1 , wherein the porosity of the composite powder is 40 to 85%.7. The composite powder according to claim 1 , wherein the average ...

Highly Crosslinked Polymer Particulate

Highly crosslinked polymer particulate. The highly crosslinked polymer particulate includes a plurality of crosslinked polymer granules. The crosslinked polymer granules include a highly crosslinked polymeric material. A characteristic dimension of each crosslinked polymer granule of the plurality of crosslinked polymer granules is at least 10 micrometers and at most 5 millimeters. 1. A highly crosslinked polymer particulate , comprising:a plurality of crosslinked polymer granules, each containing a highly crosslinked polymeric material that includes:(i) a plurality of polyethylene polymer chains; and(ii) a plurality of chemical crosslinks, wherein the plurality of chemical crosslinks includes chemical crosslinks that covalently bond a given polyethylene polymer chain of the plurality of polyethylene polymer chains to another polyethylene polymer chain of the plurality of polyethylene polymer chains; andwherein a characteristic dimension of each crosslinked polymer granule of the plurality of crosslinked polymer granules is at least 10 micrometers and at most 5 millimeters.2. The highly crosslinked polymer particulate of claim 1 , wherein the plurality of polyethylene polymer chains includes a plurality of linear polyethylene polymer chains.3. The highly crosslinked polymer particulate of claim 1 , wherein at least a subset of the plurality of polyethylene polymer chains further includes a branched polymer chain claim 1 , wherein the branched polymer chain includes at least one branch group that extends from a polymer backbone of the branched polymer chain.4. The highly crosslinked polymer particulate of claim 3 , wherein a given chemical crosslink of the plurality of chemical crosslinks extends from the at least one branch group.5. The highly crosslinked polymer particulate of claim 1 , wherein at least a subset of the plurality of polyethylene polymer chains includes a pendant group that extends from a polymer backbone of the subset of the plurality of ...

METHOD FOR PRODUCING AQUEOUS-LIQUID ABSORBENT RESIN PARTICLES, ABSORBENT BODY, AND ABSORBENT ARTICLE

Provided are aqueous-liquid absorbent resin particles in which the aqueous-liquid absorbent resin is not blocked regardless of working environment or weather condition, and that have excellent powder feedability and absorption performance under a load. The present invention pertains to aqueous-liquid absorbent resin articles (P) obtained by a production method comprising at least two steps of surface crosslinking step for crosslinking, by using a surface crosslinking agent (c), the surfaces of resin particles (B) containing a crosslinked polymer (A) of which the essential constitutional unit is formed of a water-soluble vinyl monomer (a), and/or a vinyl monomer (a) that becomes a water-soluble vinyl monomer (a) through hydrolysis, and a crosslinking agent (b). The surface crosslinking agent (c) used is different between the first surface crosslinking step and the second crosslinking step. 1121. A method for producing aqueous-liquid absorbent resin articles (P) comprising at least two surface crosslinking steps of crosslinking with a surface crosslinking agent (c) the surfaces of resin particles (B) containing a crosslinked polymer (A) having , as essential constitutional units , a water-soluble vinyl monomer (a) and/or a vinyl monomer (a) to be converted into the water-soluble vinyl monomer (a) by hydrolysis and a crosslinking agent (b) , wherein different surface crosslinking agents (c) are used in a first surface crosslinking step and a second crosslinking step.2. The production method according to claim 1 , wherein the surface crosslinking agent (c) used in the first surface crosslinking step comprises a polyglycidyl compound and/or a polyvalent metal salt.3. The production method according to claim 1 , wherein the surface crosslinking agent (c) used in the second surface crosslinking step comprises at least one surface crosslinking agent selected from the group consisting of a polyhydric alcohol claim 1 , an alkylene carbonate claim 1 , a polyoxazoline compound ...

RESIN PELLET AND METHOD FOR PRODUCING THE SAME

A resin pellet of the present invention includes a resin base material and a plurality of microparticles embedded in the resin base material. The resin pellet is covered with the plurality of microparticles on the surface of the resin base material. According to the present invention, it is possible to prevent detachment of the microparticles to be applied on the resin base material and to effectively suppress blocking of resin pellets. 114-. (canceled)15. A method for producing a resin pellet comprising:preparing a resin base material; andembedding a plurality of microparticles in said resin base material by dispersing said microparticles and said resin base material in a softened state in a liquid,wherein, in embedding said plurality of microparticles in said resin base material, the surface of said resin base material is covered with said plurality of microparticles.16. (canceled)17. The method for producing a resin pellet according to claim 15 ,wherein, in embedding said plurality of microparticles in said resin base material, said resin base material is come into contact with said microparticles at a temperature of equal to or more than 35 degrees centigrade and equal to or less than 80 degrees centigrade.18. The method for producing a resin pellet according to claim 15 , wherein said microparticles contain a resin component.19. The method for producing a resin pellet according to claim 15 , wherein said resin base material and said microparticles contain the same resin component.20. The method for producing a resin pellet according to claim 15 , wherein said resin base material contains an ethylene-vinyl acetate copolymer.21. The method for producing a resin pellet according to claim 20 , wherein the content of vinyl acetate in said ethylene-vinyl acetate copolymer contained in said resin base material is 25 to 50 mass %.22. The method for producing a resin pellet according to claim 15 , wherein said microparticles contain an ethylene-vinyl acetate copolymer. ...

Super Absorbent Resin Having Improved Solidification Resistance, And Method For Preparing Same

Disclosed are a superabsorbent polymer having improved anti-caking properties and a method of preparing the same, and the superabsorbent polymer having improved anti-caking properties includes a superabsorbent polymer, microparticles, and water, and to improve anti-caking properties of the superabsorbent polymer, the temperature of the superabsorbent polymer or water upon addition of water or the aging time upon stirring is adjusted, thereby preventing caking of the particles. 1. A method of preparing a superabsorbent polymer having improved anti-caking properties , comprising:performing heating treatment on at least one of a superabsorbent polymer, particles, or water to form heated components, wherein the superabsorbent polymer, the particles, and the water are components; andmixing the heated components together, or mixing the heated components with the remaining unheated components, to prepare a superabsorbent polymer having improved anti-caking properties,{'sup': '2', 'wherein the particles are present in an amount of 0.0001 15.0 parts by weight, based on 100 parts by weight of the superabsorbent polymer, and wherein the particles have a BET specific surface area of 300 1500 m/g and a porosity of 50% or more, and'}wherein the water is present in an amount of 0.1 20.0 parts by weight based on 100 parts by weight of the superabsorbent polymer and the particles.2. The method of claim 1 , wherein the heating treatment is performed by heating claim 1 , to a temperature ranging from 26° C. 95° C.3. (canceled)4. The method of claim 1 , further comprising:adding the particles to the superabsorbent polymer to form a composition;performing the heating treatment on at least one of the composition or the water to a temperature ranging from 26° C. 95° C.; andthen mixing the water with the composition to form the superabsorbent polymer having anti-caking properties.5. The method of claim 1 , wherein the particles are present in an amount of 0.001 20 parts by weight based on ...

LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE AND SOLID PREPARATION

Provided is low-substituted hydroxypropyl cellulose from which a granulation product having an adequate particle size can be obtained in a wet granulation method and a tablet having excellent compactibility and disintegrability can be obtained. More specifically, provided is low-substituted hydroxypropyl cellulose having a hydroxypropoxyl content of from 5 to 16% by weight and a water-soluble content of less than 2% by weight, wherein a weight ratio of water to the low-substituted hydroxypropyl cellulose giving a maximum torque is from 3 to 5 as determined while adding one part by weight of water per minute to one part by weight of the low-substituted hydroxypropyl cellulose under mixing with biaxial mixing blades. Also provided are a solid preparation comprising the low substituted hydroxypropyl cellulose, and the like. 1. Low-substituted hydroxypropyl cellulose having a hydroxypropoxyl content of from 5 to 16% by weight and a water-soluble content of less than 2% by weight , wherein a weight ratio of water to the low-substituted hydroxypropyl cellulose giving a maximum torque is from 3 to 5 as determined while adding one part by weight of water per minute to one part by weight of the low-substituted hydroxypropyl cellulose under mixing with biaxial mixing blades.2. The low-substituted hydroxypropyl cellulose according to claim 1 , having an alkali viscosity at 20° C. of from 20 to 120 mPa·s claim 1 , wherein the alkali viscosity means a viscosity of a 2% by weight solution of the low-substituted hydroxypropyl cellulose in a 10% by weight aqueous sodium hydroxide solution.3. The low-substituted hydroxypropyl cellulose according to claim 1 , having a volume-average particle size of from 30 to 100 μm as measured by a dry laser diffraction method.4. The low-substituted hydroxypropyl cellulose according to claim 1 , wherein a mixing blade on one axis of the biaxial mixing blades is rotated at 60 rpm with a peripheral velocity of 0.72 m/minute and a mixing blade on the ...

Advanced Processing of Absorbable Poly(p-dioxanone) Containing High Level of p-Dioxanone Monomer

The present invention is directed methods of making absorbable poly(p-dioxanone) pellets by melt polymerization of p-dioxanone conducted in a single reactor with a temperature regulator by charging a melt reactor with a mixture of p-dioxanone (PDO) monomer, initiator, catalyst, and optionally a dye; melt polymerizing the mixture in the melt reactor with sufficient agitation of the mixture to allow complete mixing of the monomer and for sufficient time to form a PDO polymer product having an unreacted PDO monomer content of at least 65 mole percent; placing the PDO polymer product under a vacuum to remove at least portion of unreacted PDO; discharging the PDO polymer product from the melt reactor directly into an in-line, underwater pelletizer to produce undried PDO pellets, collecting the undried PDO pellets, and storing the collected PDO pellets in the freezer or a vacuum chamber prior to drying. 1. A polymeric filament extruded from a PDO pellet made in accordance with the method of making absorbable poly(p-dioxanone) pellets by melt polymerization of p-dioxanone conducted in a single reactor with a temperature regulator , and comprising the steps of:i. charging a melt reactor with a mixture of p-dioxanone (PDO) monomer, initiator, catalyst, and optionally a dye;ii. melt polymerizing the mixture at a reaction temperature of between 95° C. and 145° C. in the melt reactor with sufficient agitation of the mixture to allow complete mixing of the monomer and for sufficient time to form a PDO polymer product of at least 65 mole percent having an unreacted PDO monomer content;iii. placing the PDO polymer product under a vacuum for about 60 to 180 minutes to remove at least portion of unreacted PDO, as measured by monomer content;iv. discharging the PDO polymer product from the melt reactor directly into an in-line, underwater pelletizer to produce undried PDO pellets,v. collecting the undried PDO pellets, andvi. storing the collected PDO pellets in the freezer or a ...

PRODUCTION METHOD OF POLYARYLENE SULFIDE, CYCLIC POLYARYLENE SULFIDE PELLET AND PRODUCTION METHOD THEREOF

A production method includes a process (I) of heating a cyclic polyarylene sulfide composition under reduced pressure and a process (II) of heating and polymerizing a cyclic polyarylene sulfide composition. This simple method allows for production of a polyarylene sulfide of the higher molecular weight and can produce a polyarylene sulfide having a narrow molecular weight distribution, low gas generation and high industrial usability. Additionally, pelletization after the process (I) can produce a cyclic polyarylene sulfide pellet having ease of conveyance, excellent molding processability, less gas generation amount and high industrial usability. 2. The method according to claim 1 , wherein the weight reduction ratio ΔWr(b) of the cyclic polyarylene sulfide composition (b) obtained in the process (I) is less than 0.5%.3. The method according to claim 1 , wherein the process (I) and the process (II) perform heating in a non-oxidizing atmosphere.4. The method according to claim 1 , wherein a heating temperature in the process (I) is not lower than a melting temperature of the cyclic polyarylene sulfide composition (a) and not higher than 300° C.5. The method according to claim 1 , wherein a heating temperature in the process (II) is not lower than a melting temperature of the cyclic polyarylene sulfide composition (b).6. The method according to claim 1 , wherein the process (II) heats the cyclic polyarylene sulfide composition (b) under a solvent-free condition.7. The method according to claim 1 , further comprising pelletizing the cyclic polyarylene sulfide composition (b) obtained in the process (I) before performing the process (II).9. The cyclic polyarylene sulfide pellet according to claim 8 , wherein when the cyclic polyarylene sulfide pellet is vibrated on a 20-mesh sieve (aperture of 0.833 mm) for 2 minutes or longer using a vibrating sieve claim 8 , a residue on the sieve is not less than 95% by weight.10. The cyclic polyarylene sulfide pellet according to ...

MASTERBATCH COMPRISING COLORANT PARTICLES AND A POLYOL POLY(HYDROXY FATTY ACID) ESTER AS DISPERSING AGENT

The present invention relates to a masterbatch comprising colorant particles, a polyol poly(hydroxy fatty acid) ester dispersing agent and a carrier resin. The masterbatch is used for coloring thermoplastic polymer compositions. The present invention also relates to a method for producing said masterbatch, a colored thermoplastic polymer composition comprising said masterbatch and colored thermoplastic products formed of said colored thermoplastic composition. 1. A masterbatch for coloring of thermoplastic polymer compositions , said masterbatch comprising a colorant in a total amount of 10-50% (w/w) relative to the total weight of the masterbatch , a dispersing agent in a total amount of 0.5-20% (w/w) relative to the total weight of the masterbatch and a carrier resin in a total amount of 30-80% (w/w) relative to the total weight of the masterbatch , wherein the dispersing agent is a polyol poly(hydroxy fatty acid) ester (pphe dispersing agent) wherein the pphe dispersing agent is poly(glycerol) poly(ricinoleate) ester (PGPR) in which the esterified poly(ricinoleate) has an average degree of polymerization of at least 5 and in which the esterified polyglycerol of the PGPR has an average degree of polymerization of 2-5.2. (canceled)3. (canceled)4. The masterbatch according to claim 1 , wherein the total amount of pphe dispersing agent in the masterbatch is 3-10% (w/w) relative to the total weight of the masterbatch.5. (canceled)6. The masterbatch according to claim 1 , wherein the colorant is a pigment composition comprising organic claim 1 , metalorganic and/or inorganic particles claim 1 , where said particles are insoluble in polymers.7. (canceled)8. The masterbatch according to claim 1 , wherein the total amount of colorant in the masterbatch is 20-50% (w/w) relative to the total weight of the masterbatch.9. The masterbatch according to claim 1 , wherein the carrier resin is selected from the group consisting of polyolefins claim 1 , acrylic resins claim 1 , ...

Superabsorbent Polymer And Preparation Method For The Same

A method of preparing a superabsorbent polymer includes preparing a base resin in which an acrylic acid-based monomer having acidic groups which are at least partially neutralized and an internal crosslinking agent are crosslinked; and heating the base resin in the presence of a surface crosslinking agent to carry out surface modification of the base resin, wherein the internal crosslinking agent includes a first epoxy crosslinking agent having an epoxy equivalent weight of 100 g/eq or more to less than 130 g/eq, and a second epoxy crosslinking agent having an epoxy equivalent weight of 130 g/eq or more. A superabsorbent polymer having improved rewetting property liquid permeability is also provided. 1. A method of preparing a superabsorbent polymer comprising:preparing a base resin in which an acrylic acid-based monomer having acidic groups which are at least partially neutralized and an internal crosslinking agent are crosslinked; andheating the base resin in the presence of a surface crosslinking agent to carry out surface modification of the base resin,wherein the internal crosslinking agent includes a first epoxy crosslinking agent having an epoxy equivalent weight of 100 g/eq or more to less than 130 g/eq, and a second epoxy crosslinking agent having an epoxy equivalent weight of 130 g/eq or more.2. The method of claim 1 , wherein the second epoxy crosslinking agent has an epoxy equivalent weight of 150 g/eq to 400 g/eq.3. The method of claim 1 , wherein the first epoxy crosslinking agent and the second epoxy crosslinking agent are included in an amount of 0.01 part by weight to 0.5 parts by weight claim 1 , respectively claim 1 , with respect to 100 parts by weight of the acrylic acid-based monomer.4. The method of claim 1 , wherein a weight ratio of first epoxy crosslinking agent:second epoxy crosslinking agent is 1:1 to 30:1.5. The method of claim 1 , wherein the first epoxy crosslinking agent is ethylene glycol diglycidyl ether claim 1 , diethylene glycol ...

CELLULOSE-ALUMINUM-DISPERSING POLYETHYLENE RESIN COMPOSITE MATERIAL, PELLET AND FORMED BODY USING SAME, AND PRODUCTION METHOD THEREFOR

A cellulose-aluminum-dispersing polyethylene resin composite material, in which a cellulose fiber and aluminum are dispersed into a polyethylene resin, wherein a proportion of the cellulose fiber is 1 part by mass or more and 70 parts by mass or less in a total content of 100 parts by mass of the polyethylene resin, and the cellulose fiber, and 1. A cellulose-aluminum-dispersing polyethylene resin composite material , in which a cellulose fiber and aluminum are dispersed into a polyethylene resin ,wherein a proportion of the cellulose fiber is 1 part by mass or more and 70 parts by mass or less in a total content of 100 parts by mass of the polyethylene resin and the cellulose fiber, and a content of the aluminum is 1 part by mass or more and 40 parts by mass or less based on the total content of 100 parts by mass of the polyethylene resin and the cellulose fiber, {'br': None, 'sup': '2', '(water absorption ratio [%])<(cellulose effective mass ratio [%])×0.01and, \u2003\u2003[Formula C], 'wherein the relationship of the water absorption ratio [%] of the composite material obtained by [Formula A] with the cellulose effective mass ratio obtained by [Formula B] satisfies the following formula [Formula] {'br': None, '(Water absorption ratio [%])=(mass after immersion [g]−mass before immersion [g])×100/(mass before immersion [g]), and \u2003\u2003[Formula A], 'under the condition that the composite material which is dried and is shaped into a sheet form specimen, is immersed into water at 23° C. for 20 days, and water absorption ratio is determined by the measured values before and after the immersion according to the following [Formula A];'} {'br': None, '(Cellulose effective mass ratio [%])=(mass loss [mg] from 270° C. to 390° C.)×100/(mass [mg] of a resin composite material sample [mg]). \u2003\u2003[Formula B], 'the cellulose effective mass ratio of the composite material obtained by the thermogravimetric analysis (TGA) using mass loss from 270° C. to 390° C. and the ...

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

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

LOW GLOSS POLYMER ADDITIVES WITH REDUCED INCIDENCE OF DISCOLORATION

Disclosed are methods for producing a low gloss polymer additive with a reduced incidence of darkening discoloration, low gloss polymer additives produce according to such methods, thermoplastic compositions comprising the inventive low gloss polymer additives, and articles that include such thermoplastic compositions. The low gloss polymer additives with reduced darkening discoloration impart a high quality, low gloss finish on end products, including natural color products. 1. A method for producing a low gloss polymer additive with a reduced incidence of darkening discoloration comprising:forming a mixture of a reactive polymer and a carrier polymer that is substantially immiscible with the reactive polymer;reactively extruding the mixture in the presence of a crosslinking agent and an acid catalyst, thereby crosslinking the mixture; and,cutting the crosslinked mixture using a cutting implement under conditions that reduce the temperature at the interface between the implement and the mixture, that reduce the exposure of the implement to oxygen, or both, thereby producing the low gloss polymer additive.2. The method according to claim 1 , wherein the reactive polymer is present in an amount from 30 wt % to 80 wt % and wherein the carrier polymer is present in an amount from 20 wt % to 55 wt %.3. The method according to claim 1 , further comprising reducing accumulations of the crosslinked mixture on the cutting implement.4. The method according to claim 1 , comprising using an underwater cutting implement.5. The method according to claim 1 , comprising reducing the exposure of the implement to oxygen by cutting the crosslinked mixture using the implement in the presence of an inert gas.6. The method according to claim 1 , wherein the acid catalyst is an organic acid claim 1 , a mineral acid claim 1 , a Lewis acid claim 1 , or a mixture thereof.7. The method according to claim 1 , wherein the reactive polymer contains a nitrile group.8. The method according to ...

Fine and Uniform Methyl Vinyl Ether-Maleic Acid Inorganic Salt Copolymers and Their Use in Oral Care and Pharmaceutical Applications

The invention relates to fine and uniform copolymer powders of partial mixed metal salts of lower alkyl vinyl ether-maleic acid copolymers having a defined particle size distribution. In particular; it relates to powders that are suitably used in the areas of oral care and pharmaceuticals and to methods for preparing the powders. Provided is a composition of powders of partial mixed metal salts of lower alkyl vinyl ether-maleic acid copolymers having: (i) a Dv50 of less than or equal to 25 microns; a Dv90 of less than or equal to 50 microns; and (ii) a particle uniformity reflected by a Dv90/Dv10 ratio of less than or equal to 10. 1. A composition of powders of partial mixed metal salts of lower alkyl vinyl ether-maleic acid copolymers having:(i) a median particle size by volume (Dv50) of less than or equal to 25 microns; a maximum particle diameter below which 90% of the sample volume exists (Dv90) of less than or equal to 50 microns; and(ii) a particle uniformity reflected by a ratio between the maximum particle diameter below which 90% of the sample volume exists and the maximum particle diameter below which 10% of the sample volume exists (Dv90/Dv10 ratio) of less than or equal to 10, preferably wherein the Dv90/Dv10 ratio is less than or equal to 6.2. The composition of claim 1 , having a Dv50 of less than 15 microns claim 1 , a Dv90 of less than 25 microns and a Dv90/Dv10 ratio of less than 6.3. The composition of claim 1 , in which the oversize fraction equal to or less than 1% by volume is not greater than 75 microns.4. The composition of claim 1 , wherein from about 10 to about 90 mole % of the carboxylic units in the polymer are converted to a mixture of metal salts.5. The composition of wherein the metal salt is selected from the group consisting of sodium claim 4 , calcium claim 4 , strontium claim 4 , zinc claim 4 , magnesium claim 4 , iron and potassium.6. The composition of claim 5 , wherein the partial mixed metal salts are sodium and calcium salts.7 ...

Thermoplastic Polymer Particles

Provided are thermoplastic polymer particles having an aspect ratio of 1.00 or more and less than 1.05, and a roundness of 0.95 to 1.00. The thermoplastic polymer particles are formed from a thermoplastic polymer resin in a continuous matrix phase. The thermoplastic polymer particles show a peak cold crystallization temperature (T) at a temperature between a glass transition temperature (T) and the melting point (T) in a differential scanning calorimetry (DSC) curve which is derived from temperature rise analysis at 10° C./min by differential scanning calorimetry. 1. Thermoplastic polymer particles having an aspect ratio of 1.00 or more and less than 1.05 calculated by Formula 1 below and a roundness of 0.95 to 1.00 calculated by Formula 2 below:{'br': None, 'Aspect ratio=major axis/minor axis, \u2003\u2003[Formula 1]'}{'br': None, 'Roundness=4×area/(π×major axis{circumflex over (\u2003)}2). \u2003\u2003[Formula 2]'}2. The thermoplastic polymer particles according to claim 1 , wherein the thermoplastic polymer particles are formed as a continuous matrix phase from the thermoplastic polymer resin.3. The thermoplastic polymer particles according to claim 2 , wherein the impurity content of the thermoplastic polymer particles is 50 ppm or less.4. The thermoplastic polymer particles according to claim 1 , wherein the thermoplastic polymer particles have a peak of cold crystallization temperature (T) at a temperature between the glass transition temperature (T) and the melting point (T) in the differential scanning calorimetry (DSC) curve derived from temperature rise analysis of 10° C./min by the DSC.5. The thermoplastic polymer particles according to claim 1 , wherein the thermoplastic polymer may be at least one polymer selected from the group consisting of polylactic acid (PLA) 1 , thermoplastic polyurethane (TPU) 1 , polyethylene (PE) 1 , polypropylene (PP) 1 , polyether sulfone (PES) 1 , poly(methyl methacrylate) (PMMA) and ethylene vinyl-alcohol copolymer (EVOH).6 ...

PARTICULATE POLYVINYL ALCOHOL COMPOSITIONS HAVING REDUCED DUST CONTENT

Provided are low dust-content particulate polyvinyl alcohol-based compositions suitable for a variety of end uses including for use in subterranean treatments and for manufacturing chemical materials, which are prepared by compacting a specified polyvinyl alcohol polymer resins, optionally with specified additives and/or other polyvinyl alcohols. 1. A particulate polyvinyl alcohol composition comprising compacted particles of a polyvinyl alcohol composition comprising a polyvinyl alcohol polymer , wherein (i) the polyvinyl alcohol polymer has a viscosity in the range of from about 10 to about 125 mPa·s , (ii) the particulate composition has a bulk density in the range of from about 0.30 to about 0.80 g/cm3 , and (iii) more than about 99 wt % of the particles have a particle size of 325 mesh or larger.2. The composition of claim 1 , which has a content of free dust fines of polyvinyl alcohol polymer in an amount of less than about 3%.3. The composition of claim 1 , wherein the polyvinyl alcohol polymer comprises a polyvinyl alcohol homopolymer.4. The composition of claim 1 , wherein the polyvinyl alcohol polymer comprises a copolymer prepared from a vinyl ester monomer and a monomer selected from the group consisting of an unsaturated acid or a derivative thereof claim 1 , an olefinic monomer claim 1 , and mixtures thereof.5. The composition of claim 1 , further comprising a second polyvinyl alcohol polymer selected from the group consisting of a (a) polyvinyl alcohol homopolymer claim 1 , and (b) a copolymer prepared from a vinyl ester monomer and a monomer selected from the group consisting of an unsaturated acid or a derivative thereof claim 1 , an olefinic monomer claim 1 , and mixtures thereof.6. The composition of claim 1 , wherein the polyvinyl alcohol polymer is a transition product.7. The composition of claim 1 , further comprising a plasticizer selected from the group consisting of water claim 1 , glycerol claim 1 , polyglycerol claim 1 , ethylene glycol ...

PROCESS FOR PRODUCING URETHANE RESIN PARTICLES FOR SLUSH MOLDING

The present invention is urethane resin particles (C) for slush mold which contain a urethane resin (D) and an additive (N), wherein the particles have a shape factor SF1 of 101 to 200, a shape factor SF2 of 120 to 240, and a central particle diameter of 20 to 500 μm. It is preferred that the urethane resin (D) has a concentration of urea groups of 0.5 to 10% by weight, a total of the concentration of urethane groups and that of the urea groups of 4 to 20% by weight, a melting point of 160 to 260° C. and a glass transition temperature of −65 to 0° C. 1. A process for producing urethane resin particles (C) for slush molding comprising a urethane resin (D) and an additive (N) , the urethane resin particles having a shape factor SF1 of 101 to 200 , a shape factor SF2 of 120 to 240 , and a central particle diameter of 20 to 500 μm ,wherein the process comprises the following step 1 and step 2-1 or 2-2 for yielding urethane resin particles (P) having particle surfaces having irregularities, in any step for yielding the urethane resin particles (P), or after the particles (P) are yielded, an additive (N) is incorporated into the (P), thereby yielding the urethane resin particles (C):Step 1:a step of producing urethane resin fine particles (G) containing a urethane resin (D), and having a central particle diameter of 1 to 100 μm, andStep 2-1:a step of heating the urethane resin fine particles (G) to a temperature of [the thermally softening temperature of the (D)−10] to [the thermally softening temperature of the (D)+10]° C. while the particles are stirred at a peripheral speed of 0.5 to 50 m/s, whereby the particles are granulated; and then cooling the particles after it is verified that the central particle diameter of the resultant particles reaches a predetermined particle diameter, whereby the resultant particles are granulated into the urethane resin particles (P), orStep 2-2:a step of heating the (G) to a temperature of 70 to [the thermally softening temperature of ...

Process for Producing Dispersible Powders

A process for producing dispersible powders by spray-drying aqueous polymer dispersions and adding antiblocking agent, wherein antiblocking agents present in agglomerated form and having a particle size from 10 μm to 250 μm, or having a particle size from 5 mm to 5 cm in the case of agglomerates in the form of extrudates, are fed in whole or in part by a transport gas into the spray-drying device and are comminuted to a particle size from 0.01 μm to 5 μm, or, in the case of extrudates, to a particle size from 2 μm to 60 μm. 1. A process for producing a dispersion powder by means of spray-drying of aqueous polymer dispersions and addition of antiblocking agent , wherein antiblocking agents present in agglomerated form and having a particle size of 10 μm to 250 μm , or having a particle size of 5 mm to 5 cm in the case of agglomerates in the form of extrudates , are supplied to the spray-drying wholly or partly by means of a conveying gas and are comminuted to a particle size of 0.01 μm to 5 μm or , in the case of extrudates , to a particle size of 2 μm to 60 μm.2. The process as claimed in claim 1 , wherein the comminution of the antiblocking agent is effected by means of an impact mill installed in the conveying line.3. The process as claimed in claim 1 , wherein the comminution of the antiblocking agent is effected by directing the conveying gas laden with antiblocking agent onto one or more impact plates.4. The process as claimed in claim 3 , wherein the impact plate(s) is/are mounted in the antiblocking agent conveying line claim 3 , in the hot air channel and/or in the drying tower.5. The process as claimed in claim 1 , wherein the comminution of the antiblocking agent is effected in a Venturi nozzle.6. The process as claimed in claim 1 , wherein the comminution methods specified in to are performed in any combination.7. The process as claimed in claim 1 , wherein all or some of the antiblocking agent is conveyed into the dryer tower in a conveying line.8. The ...

Powders From Wax-Based Colloidal Dispersions And Their Process Of Making

This invention relates to colloidally-protected, wax-based microstructures and dispersions thereof. More specifically, this invention relates to powders prepared from colloidally-protected, wax-based microstructure dispersions and process of making such powders. This invention also relates to a various end-use compositions comprising such powders from wax-based colloidal dispersions. 1. A process for preparing a powder from a wax-based colloidal dispersion comprising CPWB microstructres , comprising:(A) providing at least one wax-based colloidal dispersion;(B) subjecting said wax-based colloidal dispersion to at least one powder-making process; and(C) optionally subjecting the resulting powder from step (B) to a size reduction process;wherein said wax-based colloidal dispersion emulsion is optionally subjected to additional drying before, during, or after said at least one powder-making process.2. The process as recited in claim 1 , wherein said at least powder-making process is selected from the group consisting of freeze drying; lyophilization claim 1 , vacuum drying; air drying; spray drying; atomization; evaporation; tray drying; flash drying; drum drying; fluid-bed drying; oven drying; belt drying; microwave drying; solar drying; linear combinations thereof; and parallel combinations thereof.3. The process as recited in claim 1 , wherein said wax-based colloidal dispersion is a wax-based emulsion.4. The process as recited in claim 3 , wherein said wax-based emulsion comprises at least one wax selected from the group consisting of animal-based wax claim 3 , plant-based wax claim 3 , mineral wax claim 3 , synthetic wax claim 3 , or a wax containing organic acids and/or esters claim 3 , anhydrides claim 3 , or a emulsifier containing a mixture of organic acids and/or esters claim 3 , or combinations thereof.5. The process as recited in claim 3 , wherein:said animal-based wax is selected from the group consisting of beeswax, insect wax, spermaceti wax, lanolin, ...

Preparation Method Of Super Absorbent Polymer

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

PLGA MICROPARTICLES, A SUSTAINED RELEASE FORMULATION THEREOF AND A PRODUCTION METHOD THEREOF

The present application provides approximately spherical lactic acid-glycolic acid copolymer (PLGA) microparticles comprising a biologically active substance, wherein an average volume-based particle diameter of the PLGA microparticles is 1 μm or more and 150 μm or less, and a Reactive Span Factor (R.S.F.) of the PLGA microparticles is satisfied with formula (1): 0.1<(R.S.F.)≤1.7 formula (1), wherein an R.S.F. means (D90−D10)/D50; D90 is a particle diameter (μm) corresponding to the cumulative 90% by volume of the cumulative particle diameter distribution from the small particle side; D50 is a particle diameter (μm) corresponding to the cumulative 50% by volume of the cumulative particle diameter distribution from the small particle side; and D10 is a particle diameter (μm) corresponding to the cumulative 10% by volume of the cumulative particle diameter distribution from the small particle side; and an efficient production method thereof. The present invention provides the approximately spherical PLGA microparticles having an average volume-based particle diameter of 1 μm or more and 150 μm or less wherein there are few coarse particles or ultrafine particles without a classification step, and the particle diameter distribution is sharp around the target particle diameter.

SHAPE MEMORY POLYMER BASED ON POLY(HYDROXYALKANOATES)

Shape memory polymers and copolymers are based on poly(hydroxyalkanoates) (PHA) and have improved elastomeric properties. The shape memory polymers and copolymers may be used as protective, reinforcement, cladding or embellishment material having mechanical properties enabling substitution to materials based on technical polymers such as plasticized PVC and polyolefins.

PREPARATION METHOD FOR POLYSILOXANE POWDER FILLER, POLYSILOXANE POWDER FILLER OBTAINED THEREBY AND APPLICATION THEREOF

Disclosed is a preparation method for a polysiloxane powder filler. The method comprises: providing polysiloxane which contains at least 60 wt % of T unit, wherein T unit is equal to RSiO, Ris a hydrogen atom or an independently selected organic group comprising 1-18 carbon atoms; and performing heat treatment on the polysiloxane under inert gas atmosphere or vacuum conditions, wherein the heat treatment temperature is 250 to 750 degrees, such that silicon hydroxyl groups in the polysiloxane are condensed to obtain a polysiloxane powder filler having a true density greater than or equal to 1.33 g/cmand more preferably greater than or equal to 1.34 g/cm. The polysiloxane powder filler obtained by the described preparation method has low inductivity, low inductivity loss and low radioactivity; and can be used for semiconductor packaging materials, circuit boards and intermediate semi-finished products thereof, and semi-cured sheets or copper clad laminates of high-frequency high-speed circuit boards.

Process to Make High Density Ethylene-Based Polymer Compositions with High Melt Strength

A process for producing a composition comprising A) an ethylene-based polymer that has a density greater than, or equal to, 0.940 g/cc, and B) an ethylene homopolymer formed by polymerizing a reaction mixture comprising ethylene, using a free-radical, high pressure polymerization process includes adding component (A) to a molten stream of component (B) after component (B) exits the separator and before component (B) is solidified in the pelletizer. A polymerization configuration for producing the composition includes at least one reactor, at least one separator, at least one pelletizer, and a device used to feed component (A), in the molten state, to a molten stream of component (B) before the pelletizer. The composition has a ratio of the melt strength of the composition to the melt strength of component (B) is greater than or equal to 1.04 and a density of greater than 0.920 g/cc. 1. A process for producing a composition comprising the following:A) an ethylene-based polymer that has a density greater than, or equal to, 0.940 g/cc, andB) an ethylene homopolymer, formed by polymerizing a reaction mixture comprising ethylene, using a free-radical, high pressure polymerization process; andwherein component (B) is polymerized in a polymerization configuration comprising at least one reactor, at least one separator, and at least one pelletizer, andwherein component (A) is added to a molten stream of component (B), after component (B) exits the separator and before component (B) is solidified in the pelletizer.2. The process of claim 1 , wherein the at least one reactor is a tubular reactor.3. The process of claim 1 , wherein the ethylene-based polymer of component (A) is added to the molten stream of component (B) using a side-arm extruder.4. The process of claim 1 , wherein component (A) and component (B) are mixed in at least one static mixer before the pelletizer.5. A polymerization configuration for producing a composition comprising the following:A) an ethylene- ...

Method for Preparation of Super Absorbent Polymer

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

POLY (AMINO ACID) RHEOLOGY MODIFIER COMPOSITIONS AND METHODS OF USE

Rheology modifiers comprising cross-linked poly(amino acid) and methods of their use in aqueous compositions. The modifiers comprise cross-linked poly(amino acid) microparticles having a mean equivalent diameter when fully swollen in deionized water of up to 1000 μm, as measured by laser diffraction. In particular, the poly(amino acid) is D-, L- or D,L-Y-poly(glutamic acid). A method of preparing the modifier comprises cross-linking a poly(amino acid), drying the cross-linked poly(amino acid) and grinding the cross-linked poly(amino acid) to have the required diameter. 120-. (canceled)21. A method of preparing a rheology modifier comprising:cross-linking a poly(amino acid) with a cross-linker to produce a cross-linked poly(amino acid) and simultaneously drying the cross-linked poly(amino acid) by heating a solution of the poly(amino acid) and a cross-linker in water at a temperature at which the water evaporates and the cross-linker crosslinks the poly(amino acid); andgrinding the cross-linked poly(amino acid) to have a mean equivalent diameter when fully swollen in deionized water of up to about 1000 μm, as measured by laser diffraction.22. The method of claim 21 , wherein the cross-linked poly(amino acid) is dispersed in water before the grinding step.23. The method of claim 21 , wherein the poly(amino acid) comprises a member selected from the group consisting of amino acid homopolymers and copolymers.24. The method of claim 21 , wherein the poly(amino acid) comprises a member selected from the group consisting of D-γ-poly(glutamic acid) claim 21 , L-γ-poly(glutamic acid) claim 21 , D claim 21 ,L-γ-poly(glutamic acid) claim 21 , and combinations thereof.25. The method of claim 21 , wherein the cross-linked poly(amino acid) has a cross-link density of from one cross-link bond per ten monomer units up to one cross-link bond per about 100 claim 21 ,000 monomer units.26. The method of claim 21 , wherein the cross-linker comprises a plurality of reactive functional ...

Composite containing poly(glycerol sebacate) filler

A filler material of a thermoset resin of a diacid/polyol, such as PGS is provided. The filler useful in forming composites, such as those in which the filler and a resin matrix are of the same material to provide a homogenous polymeric composition. Composites in which at least one of the matrix, the filler or both are PGS are also provided. Methods of forming such filler materials and composites are also disclosed. The composites allow extrusion process to form articles from materials that would not otherwise be capable of being extruded.

CELLULOSE NANOCRYSTAL POLYMER COMPOSITE

A reinforced polymer composite includes a polymer matrix and a strengthening agent. The strengthening agent includes highly crystalline cellulose nanocrystals (CNC) and a stabilizing agent. The crystalline cellulose nanocrystals (CNC) have dimensions of about 3 to 5 nm in width and about 100 to 300 nm in length and a density of about 1.6 g/cmand the stabilizing agent may be one of Boehmite nanoclay (Boe) and Cetyltrimethylammonium Bromide (CTAB) or a combination of both. 1. A reinforced polymer composite , the reinforced polymer composite comprising:a polymer matrix, anda strengthening agent, the strengthening agent including cellulose nanocrystals (CNC) and a stabilizing agent; andwherein the strengthening agent is homogenously dispersed in the polymer matrix.2. The reinforced polymer composite of claim 1 , wherein the cellulose nanocrystals (CNC) have dimensions of about 3 to 5 nm in width and about 100 to 300 nm in length.3. The reinforced polymer composite of claim 1 , wherein the cellulose nanocrystals (CNC) are highly crystalline.4. The reinforced polymer composite of claim 1 , wherein the cellulose nanocrystals (CNC) have a density of about 1.6 g/cm5. The reinforced polymer composite of claim 1 , wherein the stabilizing agent is Boehmite nanoclay (Boe).6. The reinforced polymer composite of wherein the ratio of cellulose nanocrystals (CNC) to Boehmite nanoclay (Boe) is about 1 to 4.7. The reinforced polymer composite of wherein the stabilizing agent is Cetyltrimethylammonium Bromide (CTAB).8. The reinforced polymer composite of wherein the ratio of cellulose nanocrystals (CNC) to Cetyltrimethylammonium Bromide (CTAB) is about 8 to 1.9. The reinforced polymer composite of wherein the stabilizing agent is a combination of Boehmite nanoclay (Boe) and Cetyltrimethylammonium Bromide (CTAB).10. The reinforced polymer composite of wherein the ratio of cellulose nanocrystals (CNC) to Cetyltrimethylammonium Bromide (CTAB) to Boehmite nanoclay (Boe) is about 8 to 1 to ...

METHOD FOR MANUFACTURING FINE POLYARYLENE SULFIDE POWDER, AND FINE POLYARYLENE SULFIDE POWDER

Provided is a method for manufacturing fine polyarylene sulfide (PAS) powder, in which impurities such as alkali metal salts and/or PAS oligomers are reduced while the wettability of the fine PAS powder in a fine PAS powder-containing solid is retained after solid-liquid separation of a separation liquid obtained by subjecting a dispersion liquid containing granular PAS to separation into granular PAS and a separation liquid; and a fine PAS powder. 1. A method for manufacturing a fine polyarylene sulfide powder , the method comprising:(a) separating granular polyarylene sulfide and a separation liquid from a dispersion liquid containing granular polyarylene sulfide by solid-liquid separation using at least one screen having an opening diameter in a range of from 75 to 180 μm;(b) performing solid-liquid separation of the separation liquid, to obtain a fine polyarylene sulfide powder-containing solid;(c) heating the fine polyarylene sulfide powder-containing solid to reduce an amount of an organic solvent and to obtain a wet cake; and(d) washing the wet cake using an aqueous solvent;wherein a water content of the wet cake after heating is 30 wt. % or greater.2. A method for manufacturing a fine polyarylene sulfide powder , the method comprising:(a) separating granular polyarylene sulfide and a separation liquid from a dispersion liquid containing granular polyarylene sulfide, by solid-liquid separation using at least one screen having an opening diameter in a range of from 75 to 180 μm;(b) performing solid-liquid separation of the separation liquid to obtain a fine polyarylene sulfide powder-containing solid;(c) heating the fine polyarylene sulfide powder-containing solid to reduce an amount of an organic solvent and to obtain a wet cake; and(d) washing the wet cake using an aqueous solvent;the method further comprising adding water to the separation liquid, in which water is added to the separation liquid, after separating but before heating.3. The manufacturing ...

CELLULOSIC MICROSHEETS

In one aspect, methods of producing cellulosic microsheets are described herein. In some embodiments, a method of producing cellulosic microsheets comprises milling or attritioning cellulose micro-fibrils for a time period sufficient to form the cellulosic microsheets. Additionally, in some cases, the cellulose micro-fibrils are derived from soy hulls. In another aspect, compositions comprising cellulosic microsheets are described herein. 1. A composition comprising cellulosic microsheets.2. The composition of claim 1 , wherein the cellulosic microsheets have a thickness of less than about 1.5 μm claim 1 , a width of between about 25 μm and about 40 μm claim 1 , and a length of between about 50 μm and about 70 μm.3. The composition of claim 1 , wherein the composition comprises at least about 80 weight percent cellulosic microsheets claim 1 , based on the total weight of the composition.4. A method of making cellulosic microsheets comprising:milling or attritioning cellulose micro-fibrils for a time period sufficient to form the cellulosic microsheets.5. The method of claim 4 , wherein the cellulose micro-fibrils are isolated from soybean hulls.6. The method of further comprising modifying a surface of the cellulosic microsheets.7. The method of claim 6 , wherein the surface of the cellulosic microsheets is modified to be hydrophobic. This application claims priority pursuant to 35 U.S.C. §119(e) to U.S. Provisional Patent Application Ser. No. 62/246,824, filed on Oct. 27, 2015, which is hereby incorporated by reference in its entirety.The present invention relates to cellulose material or cellulosic material and to methods and/or processes for the purification and generation of cellulosic material.Cellulose is the largest annually renewable natural material by volume, as it occurs in a wide variety of forms and can be isolated or extracted from a wide array of sources, including agricultural by-product materials. Additionally, cellulose fibers have been used for ...

NOVEL METHINE DYES

The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability. 2. The dye of claim 1 , wherein in formula (I){'sup': 1', '10, 'Ris hydrogen, halogen, COOH or COOR,'}{'sup': '2', 'sub': 1', '4', '1', '4, 'Ris hydrogen, halogen, C-C-alkyl which is optionally mono- to trisubstituted, identically or differently, by halogen, or is C-C-alkoxy,'}{'sup': 3', '11, 'Ris hydrogen, halogen, COORor CN,'}{'sup': '4', 'sub': 1', '4, 'Ris C-C-alkyl or phenyl'}{'sup': 5', '6, 'sub': 1', '4, 'Rand Rare each independently C-C-alkyl,'}{'sup': '7', 'sub': 1', '4', '1', '4, 'Ris hydrogen, halogen, straight-chain or branched C-C-alkyl which is optionally mono- to trisubstituted, identically or differently, by halogen, or is C-C-alkoxy,'}{'sup': '8', 'sub': 1', '4', '1', '4, 'Ris hydrogen, halogen, C-C-alkyl which is optionally mono- to trisubstituted, identically or differently, by halogen, or is C-C-alkoxy,'}{'sup': '9', 'sub': 1', '4', '1', '4, 'Ris hydrogen, halogen, C-C-alkyl which is optionally mono- to trisubstituted, identically or differently, by halogen, or is C-C-alkoxy, and'}{'sup': 10', '11, 'sub': 1', '4, 'Rand Rare each independently C-C-alkyl.'}3. The dye of claim 1 , wherein in formula (I){'sup': 1', '10, 'Ris hydrogen, fluorine, chlorine, COOH or COOR,'}{'sup': '2', 'Ris hydrogen, fluorine, chlorine, methyl, ethyl, trifluoromethyl, methoxy or ethoxy,'}{'sup': 3', '11, 'Ris hydrogen, fluorine, chlorine, COOH, COORor CN,'}{'sup': '4', 'Ris methyl, ethyl or phenyl,'}{'sup': 5', '6, 'Rand Rare each independently methyl or ethyl,'}{'sup': '7', 'Ris hydrogen, fluorine, chlorine, methyl, ethyl, trifluoromethyl, methoxy or ethoxy,'}{'sup': '8', 'Ris hydrogen, fluorine, chlorine, methyl, ethyl, trifluoromethyl, methoxy or ethoxy,'}{'sup': '9', 'Ris hydrogen, fluorine, chlorine, methyl, ethyl, ...

NOVEL METHINE DYES

The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability. 2. The dye of claim 1 , wherein in formula (I){'sup': 1', '8, 'Ris hydrogen, fluorine, chlorine, COOH or COOR,'}{'sup': '2', 'sub': 1', '4', '3, 'Ris hydrogen, fluorine, chlorine, C-C-alkyl or CF,'}{'sup': 3', '9, 'Ris hydrogen, fluorine, chlorine, COORor CN,'}{'sup': '4', 'sub': 1', '4, 'Ris C-C-alkyl or phenyl'}{'sup': 5', '6, 'sub': 1', '4, 'Rand Rare each independently C-C-alkyl,'}{'sup': '7', 'sub': 1', '4', '3, 'Ris hydrogen, fluorine, chlorine, C-C-alkyl or CF,'}{'sup': '8', 'sub': 1', '4, 'Ris C-C-alkyl, and'}{'sup': '9', 'sub': 1', '4, 'Ris C-C-alkyl.'}3. The dye of claim 1 , wherein in formula (I){'sup': '1', 'sub': '3', 'Ris hydrogen, chlorine, COOH or COOCH,'}{'sup': '2', 'sub': '3', 'Ris hydrogen, chlorine, methyl, ethyl, n-propyl, isopropyl or CF,'}{'sup': '3', 'sub': '3', 'Ris hydrogen, fluorine, chlorine, COOCHor CN,'}{'sup': '4', 'Ris methyl or phenyl,'}{'sup': 5', '6, 'Rand Rare methyl, and'}{'sup': '7', 'sub': '3', 'Ris hydrogen, chlorine, methyl, ethyl, n-propyl, isopropyl or CF,'}4. The dye of claim 1 , wherein in formula (I){'sup': '1', 'sub': '3', 'Ris hydrogen, chlorine or COOCH,'}{'sup': '2', 'Ris hydrogen or methyl,'}{'sup': '3', 'Ris hydrogen, fluorine or chlorine,'}{'sup': '4', 'Ris methyl,'}{'sup': 5', '6, 'Rand Rare methyl and'}{'sup': '7', 'Ris hydrogen, chlorine or methyl.'}5. A method for the bulk colouration of plastic claim 1 , the method comprising adding one or more dyes of into plastic as colorants for the plastic.6. The method of claim 5 , wherein the plastic is one or more plastics selected from the group consisting of vinyl polymers claim 5 , polyesters claim 5 , polyolefins claim 5 , polycarbonates claim 5 , and polyamides.7. The method of claim 5 , wherein the plastics are ...

NOVEL METHINE DYES

The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability. 2. The dye of claim 1 , wherein in formula (I){'sup': 1', '9, 'sub': 1', '4, 'Ris hydrogen, halogen, C-C-alkyl, which is optionally mono- to trisubstituted, identically or differently, by halogen, COOH or COOR,'}{'sup': '2', 'Ris oxygen or sulfur,'}{'sup': 3', '10, 'Ris hydrogen, halogen, COORor CN,'}{'sup': '4', 'sub': 1', '4, 'Ris C-C-alkyl or phenyl,'}{'sup': 5', '6, 'sub': 1', '4, 'Rand Rare each independently C-C-alkyl,'}{'sup': 7', '8', '11, 'sub': 1', '4, 'Rand Rare each independently hydrogen, halogen, C-C-alkyl, which is optionally mono- to trisubstituted, identically or differently, by methoxy or ethoxy, or COOR, and'}{'sup': 9', '10', '11, 'sub': 1', '4, 'R, Rand Rare each independently C-C-alkyl.'}3. The dye of claim 1 , wherein in formula (I){'sup': 1', '9, 'sub': '3', 'Ris hydrogen, fluorine, chlorine, CFor COOR,'}{'sup': '2', 'Ris oxygen or sulfur,'}{'sup': '3', 'Ris hydrogen, fluorine, chlorine or CN,'}{'sup': 4', '5', '6, 'R, Rand Rare each independently methyl or ethyl,'}{'sup': 7', '8, 'Rand Rare each independently hydrogen, each independently unsubstituted methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl or tert-butyl; or methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl or tert-butyl in each case mono- or disubstituted, identically or differently, by methoxy or ethoxy, and'}{'sup': '9', 'Ris methyl or ethyl.'}4. The dye of claim 1 , wherein in formula (I){'sup': 1', '9, 'sub': '3', 'Ris fluorine, chlorine, CFor COOR,'}{'sup': '2', 'Ris oxygen or sulfur,'}{'sup': '3', 'Ris hydrogen,'}{'sup': 4', '5', '6, 'R, Rand Rare each methyl,'}{'sup': 7', '8, 'Rand Rare each independently hydrogen, each independently unsubstituted methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl or tert-butyl or ...

AROMATIC POLYESTER PARTICLES AND METHOD FOR PRODUCING AROMATIC POLYESTER PARTICLES

Aromatic polyester particles which are formed from an aromatic polyester having a flow starting temperature of 400° C. or higher and have a circularity of a projected image of 0.80 or more and 1.00 or less. 1. Aromatic polyester particles which are formed from an aromatic polyester having a flow starting temperature of 400° C. or higher and have a circularity of a projected image of 0.80 or more and 1.00 or less.2. The aromatic polyester particles according to claim 1 , {'br': None, 'sup': '1', '—O—Ar—CO—\u2003\u2003(1)'}, 'wherein said aromatic polyester is substantially composed of a repeating unit represented by the following formula (1){'sup': '1', '(Arrepresents a 1,4-phenylene group, a 2,6-naphthylene group, or a 4,4′-biphenylene group.)'}3. The aromatic polyester particles according to claim 1 , wherein a volume average particle diameter is 30 μm or more and 100 μm or less.4. A method for producing aromatic polyester particles claim 1 ,the method comprising:producing a lumpy material of an aromatic polyester;pulverizing said lumpy material;spheroidizing amorphous particles obtained by pulverizing said lumpy material by a mechanical treatment; andsubjecting said spheroidized particles to solid phase polymerization.5. The method for producing aromatic polyester particles according to claim 4 , wherein said mechanical treatment is a compression shear treatment using a dry attrition mill.6. The method for producing aromatic polyester particles according to claim 4 , wherein in pulverization of said lumpy material claim 4 , said lumpy material is pulverized so that a volume average particle diameter of said amorphous particles is 30 μm or more and 100 μm or less. The present invention relates to aromatic polyester particles and a method for producing aromatic polyester particles.Priority is claimed on Japanese Patent Application No. 2017-116066, filed Jun. 13, 2017, the content of which is incorporated herein by reference.Aromatic polyesters composed from raw ...

Method for the thermal treatment of poly-arylene ether ketone ketone powders suitable for laser sintering

The invention relates to a process for the heat treatment of poly(arylene ether ketone ketone) powder suitable for laser sintering, and also to the powders resulting from this process.

Liquid Titanium-Based Catalyst And Method For Preparing Polyester Polymer Thereof

A liquid titanium-based catalyst and method for preparing polyester polymer thereof are disclosed herein. The catalyst is made by tetrabutyl titanate, 1-4 butanediol, phosphate ester, hydroxycarboxylic acid, TEOS, acetates of metal element through heating reactions in an appropriate amount of solvent. While the catalyst maintains a high activity, the synthetic slices have good hue, with high molecular weight, stable property, resistance to hydrolysis, moreover, the catalyst is a stable multicomponent liquid catalyst based on titanium, silicon. It can be directly added or diluted to add to the raw material ester or oligoester to be poly-condensed used for synthesis of polyesters which can be used in the production of fibers, engineering plastics, films, PET bottles, sheets and profiles, etc. 1: A liquid titanium-based catalyst comprising the following compositions (in mass ratio):1,4 butanediol 450-900 portionsTEOS and/or n-methyl silicate and/or n-propyl silicate 10.4-41.6 portionsAcetates or aluminum nitrate 10.7-42.8 portionsTetrabutyl titanate and/or tetraethyl titanate and/or tetraisopropyl titanate 228-340 portionsSolvent 92-2700 portionsHydroxycarboxylic acid 15-150 portionsPhosphate ester 273-546 portions2: The liquid titanium-based catalyst according to claim 1 , wherein the solvents are one or more of anhydrous ethanol claim 1 , cyclohexane claim 1 , toluene claim 1 , mixed xylene.3: The liquid titanium-based catalyst according to claim 1 , wherein the acetates are selected from one or more of acetates of IA claim 1 , IIA claim 1 , IIIA claim 1 , IIB claim 1 , IIIB claim 1 , VIIB claim 1 , VIIIB metal elements.4: The liquid titanium-based catalyst according to claim 1 , wherein the hydroxycarboxylic acids are one or more of citric acid claim 1 , L-lactic acid claim 1 , tartaric acid claim 1 , salicylic acid.5: The method liquid titanium-based catalyst according to claim 1 , wherein the phosphate esters are one or more of trimethyl phosphate claim 1 , ...

Method for producing composition for melt processing

A method for producing a poly(3-hydroxybutyrate) resin-containing composition for melt processing includes: heating a material containing a poly(3-hydroxybutyrate) resin to a temperature equal to or higher than a melting point peak temperature in differential scanning calorimetry analysis of the poly(3-hydroxybutyrate) resin and equal to or lower than a melting point peak end temperature in the differential scanning calorimetry analysis of the poly(3-hydroxybutyrate) resin, wherein the difference between the melting point peak temperature and the melting point peak end temperature of the poly(3-hydroxybutyrate) resin is 10° C. or more; and extruding the heated material to obtain a composition for melt processing that has a new crystallization peak at a temperature higher than the melting point peak temperature.

BIOPOLYMER AND METHOD OF PREPARING THE SAME

The present invention relates to a method of making biopolymer including but not limited to bio plastic from animal by-products, more specifically from poultry feathers wherein the method of making a biopolymer comprises the steps: i) i) pre-treatment of native feathers; ii) extraction of keratin protein from pre-treated feathers in the presence of reducing agent; iii) polymerization by blending keratin protein with one or more plasticizer, one or more additive and one or more cross-linking agent, optionally in presence of at least one alkali hydroxide to obtain a polymer compound using one or more thermal processing techniques at a temperature in the range of 60° C. to 150° C.; and iv) applying pressure and subjecting the polymer compound to thermal processing at a temperature in the range of 100° C. to 220° C. in presence of at least one or more excipients. 1. A method of making biopolymer from feathers comprising the stepsi) pre-treatment of native feathers;ii) extraction of keratin protein from pre-treated feathers in the presence of reducing agent;iii) polymerization by blending keratin protein with one or more plasticizer, one or more additive and one or more cross-linking agent, optionally in presence of at least one alkali hydroxide, to obtain a polymer compound using one or more thermal processing techniques at a temperature in the range of 60° C. to 150° C.; andiv) applying pressure and subjecting the polymer compound to thermal processing at a temperature in the range of 100° C. to 220° C. in presence of at least one or more excipients.2. The method as claimed in claim 1 , wherein the pre-treatment step comprises washing with water followed by exposure to various chemicals agents selected from a group comprising SDS claim 1 , CTAB claim 1 , Detergent claim 1 , petroleum ether claim 1 , acetone claim 1 , and mixtures thereof.3. The method as claimed in claim 1 , wherein the keratin is obtained from a group comprising feather fiber keratin claim 1 , feather ...

POWDER CONTAINING CARBOXYMETHYLATED CELLULOSE NANOFIBERS

A powder that contains carboxymethylated cellulose nanofibers, said carboxymethylated cellulose nanofibers having a degree of carboxymethyl substitution of 0.50 or less and a cellulose type I crystallinity of 60% or more, and has a median diameter of 10.0 μm to 150.0 μm. This powder is suitable usable as an additive. 1. A powder comprising carboxymethylated cellulose nanofibers and having a median diameter of from 10.0 μm to 150.0 μm , wherein the carboxymethylated cellulose nanofibers have a degree of carboxymethyl substitution of 0.50 or less and a degree of crystallization of cellulose I type of 60% or more.2. The powder according to claim 1 , wherein the carboxymethylated cellulose nanofibers exhibit a transmittance to light at a wavelength of 660 nm of 70% or more when the carboxymethylated cellulose nanofibers are dispersed in water to form a water dispersion having a solid content of 1% (w/v).3. The powder according to claim 1 , wherein the powder has an angle of repose in the range from 30.0° to 60.0°.4. The powder according to claim 1 , comprising the carboxymethylated cellulose and 5% by mass to 300% by mass of a water-soluble polymer based on an absolute dry mass of the carboxymethylated cellulose nanofibers.5. The powder according to claim 1 , wherein the carboxymethylated cellulose nanofibers are produced by mercerizing a cellulose in a solvent containing mainly water to produce a mercerized cellulose claim 1 , then carboxymethylating the mercerized cellulose in a mixed solvent of water and an organic solvent to produce a carboxymethylated cellulose claim 1 , and then defibrating the carboxymethylated cellulose to provide the carboxymethylated cellulose nanofibers.6. The powder according to claim 5 , wherein the solvent containing mainly water is a solvent containing more than 50% by mass of water.7. The powder according to claim 1 , wherein the carboxymethylated cellulose nanofibers have an average fiber diameter of from 3 nm to 500 nm.8. The powder ...

Powders From Wax-Based Colloidal Dispersions and Their Process of Making

This invention relates to colloidally-protected, wax-based microstructures and dispersions thereof. More specifically, this invention relates to powders prepared from colloidally-protected, wax-based microstructure dispersions and process of making such powders. This invention also relates to a various end-use compositions comprising such powders from wax-based colloidal dispersions. 1(A) providing at least one wax-based colloidal dispersion;(B) subjecting said wax-based colloidal dispersion to at least one powder-making process; and(C) optionally subjecting the resulting powder from step (B) to a size reduction process;wherein said wax-based colloidal dispersion emulsion is optionally subjected to additional drying before, during, or after said at least one powder-making process.. A process for preparing a powder from a wax-based colloidal dispersion comprising CPWB microstructres, comprising: The present application is a continuation of U.S. application Ser. No. 14/863,648, filed Sep. 24, 2015, which claims benefit of U.S. Provisional Patent Application No. 62/056,087, filed Sep. 26, 2014, which is hereby incorporated by reference in its entirety.This invention relates to wax-based colloidal dispersions. More specifically, this invention relates to powders prepared from wax based colloidal dispersion and process of making such powders. This invention also relates to various end-use compositions comprising such powders from wax-based colloidal dispersions.Natural and synthetic waxes are used in many industries. Generally, waxes are organic compounds that characteristically consist of long alkyl chains. Natural waxes generally include plant-based, animal-based, or fossil-based waxes. Plant waxes include mixtures of unesterified hydrocarbons, mixtures of substituted long-chain aliphatic hydrocarbons, containing alkanes, alkyl esters, fatty acids, primary and secondary alcohols, diols, ketones, aldehydes. Generally, animal based waxes are derived from a variety of ...

RESIN POWDER AND METHOD FOR PRODUCING SAME

A resin powder may be superior in passability through pipes and silos, and a method may produce such a resin powder. The resin powder contains a vinyl alcohol polymer, an average particle diameter thereof is 100 to 2,000 μm, and an average value PA of a roundness P by formula (1), of 50 particles arbitrarily extracted from the particles of the resin powder having a particle diameter of 100 to 1,000 μm, is 0.1 to 0.8. 1. A resin powder , consisting of particles ,wherein the resin powder comprises a vinyl alcohol polymer,wherein an average particle diameter of the particles is in a range of from 100 to 2,000 μm, and {'br': None, 'i': P', 'r', 'NR, 'sub': i=1', 'i, 'sup': 'N', '=(Σ)/\u2003\u2003(1),'}, 'wherein an average value PA of a roundness P, by formula (1), of 50 particles arbitrarily extracted from the particles of the resin powder having a particle diameter in a range of from 100 to 1,000 μm, is in a range of from 0.1 to 0.8wherein, in the formula (1),{'sub': 'i', 'ris a curvature radius of each corner of a particle of the 50 particles arbitrarily extracted,'}R is a maximum inscribed circle radius of the particle, andN is a number of corners of the particle,wherein, when a number of corners of the particle is 9 or more, radii of curvature of eight corners, in increasing order from a smallest radius of curvature, are adopted, and N is set to 8.2. The powder of claim 1 , wherein the vinyl alcohol polymer has a viscosity-average degree of polymerization in a range of from 200 to 5 claim 1 ,000 claim 1 , andwherein the vinyl alcohol polymer a degree of saponification in a range of from 35 to 99.99 mol %.3. The powder of claim 1 , wherein the average particle diameter is in a range of from 100 to 1 claim 1 ,000 μm claim 1 , and satisfying inequality (2):{'br': None, 'i': 'PA×S≥', '18\u2003\u2003(2),'}wherein, in the inequality (2), S is a degree of saponification (mol %) of the vinyl alcohol polymer.4. The powder of claim 1 , wherein a percentage content of ...

Melt Processable Thermoplastic Polyurethane-Urea Elastomers

The present invention relates to a melt processable thermoplastic polyurethane-urea composition formed by a continuous bulk process without the presence of solvent using a polyol component, an isocyanate component, and chain extender component comprising a hindered aromatic diamine. 2. (canceled)3. The thermoplastic polyurethane-urea elastomer of claim 1 , wherein the thermoplastic polyurethane-urea elastomer is melt processable.4. The thermoplastic polyurethane-urea elastomer of claim 1 , wherein the chain extender comprises diethyltoluenediamine.5. The thermoplastic polyurethane-urea elastomer of wherein the polyol component comprises a polycaprolactone polyol.6. The thermoplastic polyurethane-urea elastomer of wherein the chain extender component further comprises 1 claim 1 ,4-butanediol.7. The thermoplastic polyurethane-urea elastomer of wherein the composition has a Shore A Hardness of about 60 A to about 95 A.8. (canceled)9. A process for making a melt-processable thermoplastic polyurethane-urea elastomer composition comprising:(1) adding a reaction mixture to a heated extruder, said reaction mixture comprising (a) a polyol component, (b) an isocyanate component; and (c) a chain extender component, said chain extender component comprising a hindered aromatic diamine;(2) reacting said polyol component, said isocyanate component, and said chain extender component in a one-shot polymerization process in said heated extruder to form a thermoplastic polyurethane-urea elastomer composition, wherein the composition comprises less than 20 mol % urea;(3) cooling said polyurethane-urea elastomer composition; and(4) processing said polyurethane-urea elastomer composition.10. The process of claim 9 , wherein said processing step includes forming pellets of polyurethane-urea elastomer composition.11. (canceled)12. The process of wherein the reaction mixture is substantially free of solvent.13. The process of wherein the chain extender component comprises ...

PROCESS FOR PREPARING POLYALKENAMERS FOR PACKAGING APPLICATIONS

The present invention relates to a process for producing cycloalkenamer-containing compositions and to such cycloalkenamer-containing compositions. The invention further relates to the use of these cycloalkenamer-containing compositions in the field of packaging materials, especially for food and drink. 1: A process for producing a polyalkenamer-containing composition , comprising the steps of:a) converting at least one cycloalkene by ring-opening metathetic polymerization to obtain a polyalkenamer-containing product-mixture,b) converting the product-mixture into solid form,c) granulating or pulverizing the product-mixture in solid form to particles prior to step d), andd) working up the product-mixture to remove the at least one cycloalkene monomer and/or an oligomer of the at least one cycloalkene to obtain the polyalkenamer-containing composition, wherein{'sup': 1/2', '1/2, 'step d) is effected by extraction in a solvent mixture comprising at least one solvent 1 and at least one solvent 2, where the solubility parameter δ of the solvents 1 is not more than 20.07 MPaand the solubility parameter δ of the solvents 2 is at least 20.27 MPa.'}2: The process according to claim 1 , whereinthe at least one solvent 1 is present in relation to the at least one solvent 2 in a mass ratio of 95:5 to 5:95.3: The process according to claim 1 , whereinthe at least one cycloalkene is at least one member selected from the group consisting of cyclobutene, cyclopentene, cycloheptene, cyclooctene, cyclononene, cyclodecene, cyclododecene, cycloocta-1,5-diene, 1,5-dimethylcycloocta-1,5-diene, cyclodecadiene, norbomadiene, cyclododeca-1,5,9-triene, trimethylcyclododeca-1,5,9-triene, norbomene (bicyclo[2.2.1]hept-2-ene), 5-(3′-cyclohexenyl)-2-norbomene, 5-ethyl-2-norbomene, 5-vinyl-2-norbomene, 5-ethylidene-2-norbomene, dicyclopentadiene, and a mixture thereof.4: The process according to claim 1 , whereinthe at least one solvent 1 is at least one member selected from the group consisting ...

PROCESS FOR PRODUCING COALESCED RUBBER MICROPARTICLES AND THEIR BLENDS WITH EPOXY RESINS

Coalesced rubber particles having an average particle size of 5-50 microns are produced by: 1. A process for producing coalesced rubber particles having an average particle size in the range of 5 microns up to and including 50 microns , comprising the steps of:(1) adding simultaneously to a latex of pre-crosslinked rubber particles a solvent and an electrolyte solution to form swollen rubber aggregation particles, wherein the latex is characterized by a solid content, the solvent has a lower boiling point than water and has a capacity of swelling the rubber particles to the extent of at least 10% by weight based on the solid content of the latex, and the electrolyte is a solution of at least one metal salt;(2) removing the solvent under atmospheric pressure or a low vacuum of less than −250 mm Hg and at a temperature greater than 80° C. to coalesce the rubber particles into coalesced rubber particles having an average particle size in the range of 5 microns up to and including 50 microns;(3) removing impurities by filtering the coalesced rubber particles and washing with methanol; and(4) filtering the washed coalesced rubber particles to remove the methanol and obtain coalesced rubber particles having an average particle size in the range of 5 microns up to and including 50 microns.2. A process according to claim 1 , wherein the pre-crosslinked rubber particles are selected from the group consisting of pre-crosslinked particles of acrylonitrile-butadiene copolymer (NBR) claim 1 , styrene-butadiene copolymer (SBR) claim 1 , acrylate copolymer (ACM) wherein the acrylate is at least one acrylate selected from the group consisting of butyl acrylate claim 1 , methyl acrylate claim 1 , ethyl acrylate claim 1 , 2-ethylhexyl acrylate claim 1 , and other acrylates claim 1 , hydrogenated acrylonitrile-butadiene copolymer (HNBR) claim 1 , butadiene homopolymer claim 1 , and isoprene homopolymer or copolymer.3. A process according to claim 1 , wherein the solvent is at least ...

CELLULOSE ETHER POWDERS

Provided is a composition in powder form comprising methylcellulose, 1. A composition in powder form comprising methylcellulose ,wherein said composition has a powder x-ray diffraction spectrum at source x-ray wavelength of 1.789 Å showing a peak at a 2θ value between 14.5 and 16.5 degrees having intensity level Ipeak and a trough at a 2θ value between 16.51 and 20 degrees having intensity level Itrough, {'br': None, 'i': P', 'I', 'I', 'I, 'Index=(peak−trough)/trough'}, 'wherein a peak index PIndex is defined as'}and wherein said PIndex is 0.01 or greater.2. The composition of wherein said PIndex is 0.1 or greater.3. The composition of wherein said PIndex is 0.3 or greater. Methylcellulose-type ethers are useful for a wide variety of purposes. Methylcellulose-type ethers are normally manufactured in the form of powders, and for most purposes, it is desirable to dissolve the powder in water. However, many methylcellulose-type ethers have powder dissolution temperature of 25° C. or below. To dissolve such methylcellulose-type ethers in water requires cooling equipment, which adds complexity and expense to the process of using the methylcellulose-type ether. It is desired to find a method to raise the powder dissolution temperature of such a methylcellulose-type ether and to find methylcellulose-type ether powders that are made by such a method.WO 2008/050209 describes a method of making hydroxypropyl methyl cellulose hard capsules. The method described by WO 2008/050209 involves dispersing HPMC in water at temperature preferably above 60° C.; cooling the dispersion below room temperature to achieve solubilization of the HPMC; then using the resulting aqueous composition in a dip coating process to produce capsules. It is desired to find a method of producing methylcellulose-type ethers in a powder form that has powder dissolution temperature that is higher than previously known powders of methylcellulose-type ethers of the same chemical composition.The following is a ...

LIGNIN PELLETS AND PROCESS FOR PRODUCING SAME

Lignin pellets comprising fused lignin are described herein. The lignin pellets may further comprise a processing aid, and/or a surfactant, and/or a chemical modifying agent, and/or a compatibilizer and/or a thermoplastic polymer. An extrusion process for producing the lignin pellets and their use in the manufacture of lignin thermoplastic blend products, polyols, polyphenols, polyaromatics and polyurethanes is also disclosed herein. The extruded lignin pellet may be dry-blended with additional thermoplastic and/or additive and then directly processed using processes such as injection molding, compression molding, extrusion, extrusion coating, blowing, thermoforming, stamping, foaming, fiber drawing, calendering or rolling. 1. A lignin pellet comprising a fused lignin.2. The lignin pellet of claim 1 , wherein the pellet comprises a moisture content of less than about 5%.3. The lignin pellet of or claim 1 , wherein the lignin pellet comprises a moisture content of less than about 2%.4. The lignin pellet of any one of to claim 1 , further comprising an additive.5. The lignin pellet of claim 4 , wherein the additive is at least one of a processing aid claim 4 , a surfactant claim 4 , a chemical modifying agent claim 4 , a compatibilizer or a thermoplastic polymer.6. The lignin pellet of claim 5 , wherein the additive is a thermoplastic polymer.7. The lignin pellet of claim 5 , wherein the additive is a processing aid.8. The lignin pellet of claim 5 , wherein the additive is a processing aid and a compatibilizer.9. The lignin pellet of claim 5 , wherein the additive is a processing aid claim 5 , a compatibilizer and a thermoplastic polymer.10. The lignin pellet of any one of to claim 5 , wherein the pellet is an extruded lignin pellet.11. The lignin pellet of any one of to claim 5 , wherein the pellet is a non-porous pellet.12. The lignin pellet of any one of to claim 5 , wherein the pellet is a porous pellet.13. The lignin pellet of any one of to claim 5 , wherein the ...

DISPERSING POLYMERS WITH IMPROVED THERMAL STABILITY

The invention relates mainly to a polymer comprising a hydrocarbon-based main chain bearing carboxylic groups and polyalkoxylated chains and up to 4% by weight of anti-oxidant groups, relative to the weight of the final polymer, grafted to the main chain. It also relates to a method for preparing such a polymer and to an admixture which is of use as a plasticizer of suspensions of mineral particles comprising same. Finally, it is related to the use of such a polymer for fluidifying suspensions of mineral particles and reducing the water demand of hydraulic compositions. 1. A polymer comprising a main hydrocarbon chain bearing carboxylic groups and polyalkoxylated chains , comprising 0.01 to 4% by weight , based on the weight of the final polymer , of antioxidant groups grafted to the main chain.2. The polymer according to claim 1 , comprising between 0.1 and 4% by weight of antioxidant groups claim 1 , based on the weight of the polymer.3. The polymer according to claim 1 , wherein the antioxidant groups comprise an aromatic amine.5. The polymer according to claim 1 , wherein the antioxidant group is grafted to the main chain via a carboxylic group claim 1 , by means of an amide or ester bond.6. The polymer according to claim 1 , wherein the polymer has a weight average molar mass of between 1 claim 1 ,000 and 1 claim 1 ,000 claim 1 ,000 (Mw).7. The polymer according to claim 1 , as a powder.8. A method for preparing a polymer according to claim 1 , comprising the step of:(i) esterifying a polycarboxylic compound with an alkoxy polyalkoxyglycol in the presence of an antioxidant compound, which may react under conditions of the reaction with a reactive function born by the polycarboxylic compound in order to form a covalent bond between the polycarboxylic compound and the antioxidant compound.9. The method according to claim 8 , wherein the step (i) is carried out in two distinct steps:(a) the reaction mixture is first brought to a temperature comprised between 50 ...

UTILIZATION OF GASSES FOR POLYMERIC MATERIALS FRAGMENTATION AND ACTIVATION AND RELATED DEVICE

The present invention relates generally to utilising gasses for fragmenting polymeric materials and simultaneously modifying the surface area molecular structure of the said polymeric materials. More particularly, the present invention relates to a method and associated device for the processing of already preliminarily deformed polymeric materials, preferably without metal reinforcing elements, by utilising aggressive gasses to both modify the polymeric materials surface area into an activated state and also simultaneously fragment the fed preliminarily deformed polymeric materials into a powder-like form with a relatively increased surface area. 2. A method according to claim 1 , wherein the aggressive gasses are fed with or without a catalyst for the gas-solid reactions.3. A method according to claim 1 , wherein feeding aggressive gasses includes controlling the volume of aggressive gas in the reaction chamber by respective application of a partial or full vacuum or admission of air.4. A method according to claim 1 , wherein the simultaneous polymeric material fragmentation and activation occurs at standard atmospheric pressure and room temperature of 20 degrees Celsius.5. A method according to claim 1 , wherein the ozone gas component utilization is a maximum of 4 grams of ozone per 1 kilogram of said preliminarily deformed polymeric material by weight.6. A method according to claim 1 , wherein the ozone gas component flow rate is a minimal of 1 liter per minute of ozone for every 10 liters of vessel volume.7. A method according to claim 1 , wherein the size of the preliminarily deformed polymeric materials being placed into the vessel are of size 5 millimeters or smaller.8. A method according to claim 1 , wherein the preliminarily deformed polymeric materials do not contain metal reinforcing elements.9. A method according to claim 1 , wherein the preliminarily deformed polymeric materials are processed in separate batches according to the hardness of the said ...

POLYMER DISPERSIONS

A polymer dispersion is produced by polymerization of at least two different ethylenically unsaturated monomers in at least first and second stages. The polymer produced in the first stage comprises 25 to 60% by weight of the total monomer composition and has a uniform glass transition temperature from −30° C. to 0° C. The polymer produced in the second stage comprises 40 to 75% by weight of the total monomer composition and has a variable monomer composition such that the second stage polymer has a non-uniform glass transition temperature which varies between a first value from −30° to +10° C. and second value of at least +70° C. Any polymer produced in further polymerization stages comprises no more than 10% by weight of the total monomer composition and the glass transition temperature of the hypothetical uniform copolymer produced by the total monomer composition is in the range from 0° C. to 25° C. 1. A polymer dispersion produced by polymerization of at least two different ethylenically unsaturated monomers in at least two stages wherein:the polymer produced in a first stage comprises 25 to 60% by weight of the total monomer composition and has a uniform glass transition temperature from −30° C. to 0° C.;the polymer produced in a second stage comprises 40 to 75% by weight of the total monomer composition and has a variable monomer composition such that the second stage polymer has a non-uniform glass transition temperature which varies between a first value from −30° to +10° C. and second value of at least +70° C.;any polymer produced in further polymerization stages comprises no more than 10% by weight of the total monomer composition; andthe glass transition temperature of the hypothetical uniform copolymer produced by the total monomer composition is in the range from 0° C. to 25° C.2. A polymer dispersion according to with a minimum film forming temperature (MFFT) of equal or less than 5° C.3. A polymer dispersion according to claim 1 , wherein each of the ...

PROCESS FOR MIXING OLEFIN POLYMER WITH REACTANTS

The present invention is directed to a process for producing a modified olefin polymer having increased melt strength in an extruder. The process comprising the steps of: (A) contacting a stream comprising particles of an olefin polymer with a vapour stream of a functionally unsaturated compound in vapour phase thereby producing a first mixed stream; (B) passing the first mixed stream to an extruder; (C) melting the polymer particles of the first mixed stream in the extruder; (D) introducing a stream of a free radical generator either into the first mixed stream or into the extruder; and (E) extruding the first mixed stream and the free radical generator at a temperature which is greater than the decomposition temperature of the free radical generator and the melting temperature of the olefin polymer but less than the decomposition temperature of the olefin polymer thereby producing the modified olefin polymer in the extruder. 1: A process for producing a modified olefin polymer , said process comprising the steps of: (A) contacting a stream comprising a functionally unsaturated compound and stream comprising a free radical generator thus producing a mixed fluid stream; (B) introducing a stream comprising particles of an olefin polymer into an extruder; (C) introducing the mixed fluid stream into the extruder; (D) melting the stream comprising particles of the olefin polymer in the extruder to produce a melt stream; and (E) extruding the melt stream at a temperature which is greater than the decomposition temperature of the free radical generator and the melting temperature of the olefin polymer but less than the decomposition temperature of the olefin polymer , thereby producing the modified olefin polymer.2: The process according to claim 1 , comprising conducting the step (A) in a gas-liquid or liquid-liquid absorber.3: The process according to claim 1 , wherein the mixed fluid stream is passed through a static mixer.4: The process according to claim 1 , wherein ...

FOAMABLE RESIN COMPOSITION FOR FOAM SHEET, FOAM SHEET, PROCESS FOR PREPARING PARTICULATE POLYLACTIC ACID AND PROCESS FOR PREPARING FOAM SHEET

Disclosed herein is a foamable resin composition for a foam sheet including polylactic acid resin particles, each of the particles having a particle size of about 1 μm to about 100 μm. A process for preparing a particulate polylactic acid resin includes: introducing a polylactic acid resin and then forming a molten polylactic acid spray solution; and injecting the molten polylactic acid spray solution by a melt spray method and simultaneously cooling the molten polylactic acid spray solution to obtain a particulate polylactic acid. In addition, disclosed herein is a process for preparing a foam sheet using the foamable resin composition for a foam sheet including a polylactic acid resin. 1. A process for preparing a particulate polylactic acid resin comprising:introducing a polylactic acid resin and then forming a molten polylactic acid spray solution; andspraying the molten polylactic acid spray solution by a melt spray method and simultaneously cooling the molten polylactic acid spray solution to obtain a particulate polylactic acid.2. The process according to claim 1 , wherein the polylactic acid resin is introduced into an extruder claim 1 , and then transferred to an spray nozzle and heated in the spray nozzle to form the molten polylactic acid spray solution.3. The process according to claim 2 , wherein the polylactic acid resin in the form of pellet or powder is introduced into the extruder.4. The process according to claim 3 , wherein the molten polylactic acid spray solution is introduced into the spray nozzle together with an air and then discharged.5. The process according to claim 4 , wherein a temperature of the air that is injected into the spray nozzle is of 300° C. to 500° C. claim 4 , a pressure of the air that is injected into the spray nozzle is of 100 psi to 1 claim 4 ,000 psi claim 4 , and an injection speed of the air that is injected into the spray nozzle is of 10 m/s to 50 m/s.6. The process according to claim 2 , wherein a temperature of the ...

AGGLOMERATED PARTICULATE LIGNOSULFONATE

An agglomerated particulate lignosulfonate material may be made by introducing or forming lignosulfonate microparticles in a fluidized bed agglomerator, and introducing sufficient heated gas and lignosulfonate liquid in the agglomerator to convert the microparticles to lignosulfonate granules of enlarged size. The granules may have an average size of at least 0.1 mm, and may be used to make a dry-blended cement additive or oil well cement that may be dustless, easily poured and stored, and rapidly dissolved in water. 1. A method for making a particulate material , which method comprises:a) introducing or forming microparticles comprising lignosulfonate in a fluidized bed agglomerator;b) introducing heated gas and a liquid comprising lignosulfonate in the agglomerator; andc) enlarging the microparticles to form lignosulfonate granules having higher density or slower moisture absorption than spray-dried powder made using the same liquid comprising lignosulfonate.2. A method according to comprising introducing the liquid comprising lignosulfonate by spraying it onto the fluidized bed.3. A method according to wherein the heated gas is air at about 170 to about 250° C.4. A method according to wherein the bed has a bed temperature of about 60 to about 80° C.5. A method according to comprising enlarging the microparticles to form lignosulfonate granules having an average size of about 0.1 to about 10 mm.6. A method according to comprising enlarging the microparticles to form lignosulfonate granules having an average size of about 0.1 to about 2 mm.7. A method according to comprising forming lignosulfonate granules having an uncompressed bulk density of about 550 to about 800 kg/m.825-. (canceled)26. A method according to comprising enlarging the microparticles to form lignosulfonate granules having an average size of about 0.1 to about 1 mm.27. A method according to wherein the lignosulfonate granules contain less than 5 wt. % particles having a size less than 0.1 mm.28. A ...

COMPOSITION FOR PREPARING POLYETHERIMIDE/POLYESTER BLEND CHIP AND METHOD FOR PREPARING THE SAME

A composition for preparing a polyetherimide/polyester blend chip includes a polyetherimide powder and a polyester powder, in which the polyetherimide powder has an amount greater than 70 wt % and less than or equal to 90 wt % based on a total weight of the polyetherimide powder and the polyester powder, and the polyester powder has an amount greater than or equal to 10 wt % and less than 30 wt % based on the total weight of the polyetherimide powder and the polyester powder. The polyetherimide/polyester blend chip made of the composition is amorphous. 1. A composition for preparing a polyetherimide/polyester blend chip , comprising:a polyetherimide powder; anda polyester powder, wherein the polyetherimide powder has an amount greater than 70 wt % and less than or equal to 90 wt % based on a total weight of the polyetherimide powder and the polyester powder, and the polyester powder has an amount greater than or equal to 10 wt % and less than 30 wt % based on the total weight of the polyetherimide powder and the polyester powder,wherein the polyetherimide/polyester blend chip made of the composition is amorphous.2. The composition for preparing the polyetherimide/polyester blend chip of claim 1 , wherein the polyetherimide powder has a diameter in a range of 10 μm to 600 μm claim 1 , and the polyester powder has a diameter in a range of 10 μm to 600 μm.3. The composition for preparing the polyetherimide/polyester blend chip of claim 1 , wherein the polyester powder has a limiting viscosity in a range of 0.85 dl/g to 1.10 dl/g.4. The composition for preparing the polyetherimide/polyester blend chip of claim 1 , further comprising:an additive, having an amount in a range of 0.01 wt % to 1.00 wt % based on the total weight of the polyetherimide powder and the polyester powder, and the additive being a polyalcohol, a polyolefin, a phenol-containing compound or a combination thereof.5. The composition for preparing the polyetherimide/polyester blend chip of claim 4 , ...

ACRYLIC POLYMER, PLASTISOL, AND TEXTILE INK

There are provided an acrylic polymer and plastisol using which a textile ink having excellent washing resistance and crocking resistance can be produced and a textile ink having excellent washing resistance and crocking resistance. The acrylic polymer of the present invention is an acrylic polymer comprising an acetone-soluble portion (A) and an acetone-insoluble portion (B), and the content of the acetone-insoluble portion (B) in the acrylic polymer is 5 mass % to 29 mass %, and the content of methyl methacrylate units in the acetone-soluble portion (A) is 60 mass % to 85 mass %. 1. An acrylic polymer comprising an acetone-soluble portion (A) and an acetone-insoluble portion (B) ,wherein the content of the acetone-insoluble portion (B) in the acrylic polymer is 5 mass % to 29 mass %, andwherein the content of methyl methacrylate units in the acetone-soluble portion (A) is 60 mass % to 85 mass %.2. The acrylic polymer according to claim 1 ,wherein the content of alkyl (meth)acrylate units having an alkyl group having 2 to 8 carbon atoms in the acetone-insoluble portion (B) is 15 mass % to 90 mass %.3. The acrylic polymer according to claim 1 , including dimethacrylate units having an alkyl group having 6 or less carbon atoms.4. The acrylic polymer according to claim 1 ,wherein the acrylic polymer is acrylic polymer fine particles, and the volume average particle size of the acrylic polymer fine particles is 300 nm or more.5. A plastisol comprising the acrylic polymer according to and a plasticizer.6. A textile ink comprising the plastisol according to . The present invention relates to an acrylic polymer, a plastisol, and a textile ink. This application is a continuation application of International Application No. PCT/JP2018/020728, filed on May 30, 2018, which claims the benefit of priority of the prior Japanese Patent Application No. 2017-144572, filed Jul. 26, 2017, the content of which is incorporated herein by reference.In the related art, textile inks have ...

Process for Producing Dispersion Powders

A process for producing dispersion powders by means of spray drying of aqueous polymer dispersions and addition of antiblocking agents in a rotary atomization dryer, wherein the antiblocking agent is conveyed by means of delivery air, wholly or partly, into an annular gap which is formed by a moulding arranged concentrically around the housing of the rotary atomizer, and which ends at a distance above the upper edge of the atomizer plate of the rotary atomizer.

PROCESS AND APPARATUS FOR DIRECT CRYSTALLIZATION OF POLYCONDESATES

A process for continuous production of partly crystalline polycondensate pellet material which comprises the step of crystallizing the pellet material in a second treatment space () under fixed bed conditions by supply of energy from the exterior by means of a process gas, wherein the process gas has a temperature (T), which is higher than the sum of the pellet temperature (T) and the temperature increase (T) which occurs due to heat of crystallization released hi the second treatment space (), i.e., (T>(T+T)). The pellets at the exit from the second treatment space () have an average temperature (T), which is 10 to 90° C. higher than the sum of the temperature of the pellets (T) and the temperature increase (T) which occurs due to heat of crystallization released in the second treatment space (a), i.e., (T+T+90° C.)≥T≥(T+T+10°). 115-. (canceled)16. A process for continuous production of partly crystalline polycondensate pellet material , comprising the steps of:a) forming a melt of a polycondensate into pellets by adding a liquid cooling medium, and cooling to an average pellet temperature within the range of temperature of crystallization of the polycondensate, wherein cooling takes place before or during or after forming to pellets;{'sub': 'GR', 'b) separating the liquid cooling medium from the pellets in a first treatment space, wherein the pellets after exit from the first treatment space exhibit a pellet temperature (T),'}{'sub': Gas', 'GR', 'KR', 'Gas', 'GR', 'KR', 'PH', 'GR', 'KR', 'GR', 'KR', 'PH', 'GR', 'KR, 'c) crystallizing the pellets in a second treatment space, wherein in the second treatment space fixed bed conditions exist and the pellets are heated in the second treatment space by supply of energy from the exterior by a process gas, wherein the process gas has a gas temperature (T), which is higher than a sum of a pellet temperature (T) and a temperature increase (T) which occurs due to heat of crystallization released in the second treatment space ...

PRODUCTION METHOD FOR POLY(VINYL ALCOHOL)

Disclosed is a production method for a poly(vinyl alcohol) having a degree of saponification of 97.0 mol % or more, comprising: a pulverization step of pulverizing a first poly(vinyl alcohol) having a particulate form to obtain a second poly(vinyl alcohol) having an adjusted particle size, and a heating step of heating the second poly(vinyl alcohol). 1. A production method for a poly(vinyl alcohol) having a degree of saponification of 97.0 mol % or more , the method comprising:a pulverization step of pulverizing a first poly(vinyl alcohol) having a particulate form to obtain a second poly(vinyl alcohol) having an adjusted particle size; anda heating step of heating the second poly(vinyl alcohol).2. The production method according to claim 1 , wherein claim 1 , in the heating step claim 1 , the second poly(vinyl alcohol) is heated after at least one of an alcohol and water is adhered to a surface of the second poly(vinyl alcohol).3. The production method according to claim 1 , wherein claim 1 , in the heating step claim 1 , the second poly(vinyl alcohol) is heated after an alcohol and water are adhered to a surface of the second poly(vinyl alcohol).4. The production method according to claim 1 , wherein claim 1 , in the pulverization step claim 1 , the first poly(vinyl alcohol) is pulverized such that a proportion of a poly(vinyl alcohol) having a particle diameter of 53 μm or less in the second poly(vinyl alcohol) is 50 mass % or less claim 1 , and that a proportion of a poly(vinyl alcohol) having a particle diameter of 180 μm or more in the second poly(vinyl alcohol) is 5 mass % or less.5. The production method according to claim 1 , wherein the poly(vinyl alcohol) having a degree of saponification of 97.0 mol % or more has a solubility in cold water of 10.0% or less and a degree of swelling of 5.0 or less.6. The production method according to claim 1 , wherein the poly(vinyl alcohol) having a degree of saponification of 97.0 mol % or more is used as a binder for ...

CLEAR BINDER THAT IS SOLID WHEN COLD

A clear binder, in divided form, that is solid when cold, and to the different ways in which it is formed. Also, the method for transporting and/or storing and/or handling the binder, as well as to the uses of the binder for road and/or industrial applications. 115-. (canceled)16. A clear binder that is solid under cold conditions and in divided form , comprising at least one clear binder base and at least one chemical additive chosen from an organic compound , a paraffin , a polyphosphoric acid , and mixtures thereof.17. The clear binder as claimed in claim 16 , comprising from 0.1% to 5% by weight claim 16 , of said chemical additive relative to the total weight of said clear binder base.18. The clear binder as claimed in claim 17 , comprising from 0.5% to 4% by weight of said chemical additive relative to the total weight of said clear binder base.19. The clear binder as claimed in claim 18 , comprising from 0.5% to 2.8% by weight of said chemical additive relative to the total weight of said clear binder base.20. The clear binder as claimed in claim 19 , comprising from 0.5% to 2.5% by weight of said chemical additive relative to the total weight of said clear binder base.21. The clear binder as claimed in claim 16 , wherein the chemical additive is an organic compound which has a weight-average molar mass of less than or equal to 2000 gmol.22. The clear binder as claimed in claim 16 , comprising at least:(i) one plasticizer,(ii) one structuring agent, and(iii) one copolymer,(iv) one chemical additive chosen from an organic compound, a paraffin, a polyphosphoric acid and mixtures thereof.23. The clear binder as claimed in claim 16 , in the form of blocks or pellets.24. A kit comprising at least:{'claim-ref': {'@idref': 'CLM-00016', 'claim 16'}, 'one clear binder that is solid under cold conditions and in divided form as claimed in ,'}one capsule comprising a compound chosen from at least one copolymer based on conjugated diene units and aromatic monovinyl ...

ADDITIVE COMPOSITION AND METHODS FOR USING THE SAME

An additive composition comprises a plurality of granules. The granules comprise a polymer additive selected from the group consisting of clarifying agents, nucleating agents, and mixtures thereof. About 75 wt. % or more of the granules present in the additive composition have a particle size of about 0.5 mm to about 2.8 mm, and the granules have a particle hardness of less than 50 cN. A method for producing a polymer composition utilizes the above-described additive composition. 1. An additive composition comprising a plurality of granules , the granules comprising a polymer additive selected from the group consisting of clarifying agents , nucleating agents , and mixtures thereof , wherein about 75 wt. % or more of the granules present in the additive composition have a particle size of about 0.5 mm to about 2.8 mm , and wherein the granules have a particle hardness of less than 50 cN.3. The additive composition of claim 2 , wherein R claim 2 , R claim 2 , R claim 2 , R claim 2 , R claim 2 , R claim 2 , and Rare each hydrogen; Ris —CHOHCHOH; and R claim 2 , R claim 2 , R claim 2 , and Rare selected from the group consisting of alkyl groups.4. The additive composition of claim 3 , wherein R claim 3 , R claim 3 , R claim 3 , and Rare methyl groups.5. The additive composition of claim 2 , wherein Ris selected from the group consisting of alkyl groups and alkenyl groups; R claim 2 , R claim 2 , R claim 2 , R claim 2 , R claim 2 , R claim 2 , R claim 2 , and Rare each hydrogen; Ris —CHOHCHOH; and Rand Rare selected from the group consisting of alkyl groups and alkoxy groups.6. The additive composition of claim 5 , wherein R claim 5 , Rand Rare n-propyl groups.7. The additive composition of claim 1 , wherein the polymer additive is about 50 wt. % or more of the total weight of the additive composition.8. The additive composition of claim 7 , wherein the polymer additive is about 75 wt. % or more of the total weight of the additive composition.9. The additive composition ...

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 ...

METHOD FOR PRODUCING MOLECULAR ASSEMBLIES, AND DEVICE FOR PRODUCING MOLECULAR ASSEMBLIES

A method for producing molecular assemblies of an amphiphilic block polymer includes applying a polymer solution in a layered shape on a planar base member, the polymer solution including an amphiphilic block polymer and a solvent, the amphiphilic block polymer having a hydrophilic block chain including 20 or more sarcosine units and a hydrophobic block chain including 10 or more lactic acid units, forming a polymer film on the planar base member by removing the solvent from a coated layer of the polymer solution, and obtaining molecular assemblies by bringing the polymer film into contact with a water-based liquid. The planar base member is a flexible long film. 1. A method for producing molecular assemblies of an amphiphilic block polymer , comprising:applying a polymer solution in a layered shape on a planar base member, the polymer solution comprising an amphiphilic block polymer and a solvent, the amphiphilic block polymer having a hydrophilic block chain including 20 or more sarcosine units and a hydrophobic block chain including 10 or more lactic acid units;forming a polymer film on the planar base member by removing the solvent from a coated layer of the polymer solution; andobtaining molecular assemblies by bringing the polymer film into contact with a water-based liquid,wherein the planar base member is a flexible long film.2. The method according to claim 1 , wherein when the polymer solution is applied in the layered shape claim 1 , the planar base member has a planar shape or a coating surface of the planar base member has a convex curved surface shape.3. The method according to claim 1 , wherein when the polymer solution is applied in the layered shape claim 1 , the planar base member is in a warmed state.4. The method according to claim 1 , wherein the polymer solution further includes a hydrophobic polymer.5. The method according to claim 4 , wherein the hydrophobic polymer is a polymer to which at least one of a signal agent claim 4 , a ligand and a ...

Polyethylene Composition

A polyethylene composition containing: 1. A polyethylene composition comprising:the following features (A) and (B):(A) a cumulative percentage elution from 50° C. to 98° C. is 50% by mass or more and less than 80% by mass in an elution temperature-cumulative eluate volume curve obtained by measuring eluate volumes every 1° C. by temperature rising elution fractionation (TREF) of cross-fractionation chromatography (CFC); and{'sub': 'w', '(B) the polyethylene composition comprises at least one eluted component having a weight-average molecular weight (M) of 200,000 or more at a temperature of 85° C. or more and less than 105° C. among eluted components recovered every 1° C. by temperature rising elution fractionation (TREF) of cross-fractionation chromatography (CFC).'}2. The polyethylene composition according to claim 1 , whereinan on-sieve component is absent when the polyethylene composition is sifted using a sieve having an aperture size of 300 μm according to JIS Z 8815.3. The polyethylene composition according to claim 1 , whereina chlorine content is 50 ppm by mass or less.4. The polyethylene composition according to claim 1 , whereina content of an additive aimed at imparting fluidity is 5000 ppm by mass or less.5. The polyethylene composition according to claim 1 , whereina cumulative percentage elution from 50° C. to 94° C. is less than 40% by mass in the elution temperature-cumulative eluate volume curve obtained by measuring eluate volumes every 1° C. by temperature rising elution fractionation (TREF) of cross-fractionation chromatography (CFC).6. The polyethylene composition according to claim 1 , whereinthe cumulative percentage elution from 50° C. to 94° C. is 10% by mass or more in the elution temperature-cumulative eluate volume curve obtained by measuring eluate volumes every 1° C. by temperature rising elution fractionation (TREF) of cross-fractionation chromatography (CFC).7. The polyethylene composition according to claim 1 , whereinthe ...

Advanced Processing of Absorbable Poly(p-dioxanone) Containing High Level of p-Dioxanone Monomer

The present invention is directed methods of making absorbable poly(p-dioxanone) pellets by melt polymerization of p-dioxanone conducted in a single reactor with a temperature regulator by charging a melt reactor with a mixture of p-dioxanone (PDO) monomer, initiator, catalyst, and optionally a dye; melt polymerizing the mixture in the melt reactor with sufficient agitation of the mixture to allow complete mixing of the monomer and for sufficient time to form a PDO polymer product having an unreacted PDO monomer content of at least 65 mole percent; placing the PDO polymer product under a vacuum to remove at least portion of unreacted PDO; discharging the PDO polymer product from the melt reactor directly into an in-line, underwater pelletizer to produce undried PDO pellets, collecting the undried PDO pellets, and storing the collected PDO pellets in the freezer or a vacuum chamber prior to drying. 1. A method of making absorbable poly(p-dioxanone) pellets by melt polymerization of p-dioxanone conducted in a single reactor with a temperature regulator , and comprising the steps of:i. charging a melt reactor with a mixture of p-dioxanone (PDO) monomer, initiator, catalyst, and optionally a dye;ii. melt polymerizing the mixture at a reaction temperature of between 95° C. and 145° C. in the melt reactor with sufficient agitation of the mixture to allow complete mixing of the monomer and for sufficient time to form a PDO polymer product having an unreacted PDO monomer content of at least 65 mole percent;iii. placing the PDO polymer product under a vacuum for about 60 to 180 minutes to remove at least portion of unreacted PDO, as measured by monomer content;iv. discharging the PDO polymer product from the melt reactor directly into an in-line, underwater pelletizer to produce undried PDO pellets,v. collecting the undried PDO pellets, andvi. storing the collected PDO pellets in the freezer or a vacuum chamber prior to drying.2. A method of claim 1 , wherein the melt ...

MOLECULAR MODIFICATION OF POLYETHYLENE RESIN

The invention is related to a process for producing modified polyethylene having decreased melt flow rate (5 kg, 190° C.) (MFR). In particular, the present invention is directed to a process in a controlled manner for producing modified polyethylene recyclates having low MFR and low gel content directly by reactive extrusion processing. 1. A process for obtaining a controlled reduction of the melt flow rate (5 kg , 190° C.) (MFR) of a polyethylene by modifying the polyethylene , the polyethylene having a starting melt flow rate (5 kg , 190° C.) (MFR) and a melting temperature , the process comprising the steps of:{'sub': '0', '(a) determining the starting melt flow rate (5 kg, 190° C.) (MFR) of the polyethylene,'}(b) feeding the polyethylene into an extrusion device,(c) feeding a peroxide into the extrusion device, wherein the peroxide is provided in an amount of X ppm over the weight of the polyethylene, wherein the amount of peroxide X is in a range of 300 ppm to 4000 ppm,(d) mixing the polyethylene with the peroxide in the extrusion device at a temperature above the melting point of the polyethylene to form a mixture that is substantially homogeneous,{'sub': 'f', '(e) extruding the mixture obtained from step (d) to provide a modified polyethylene having a final melt flow rate (5 kg, 190° C.) (MFR),'}{'sub': 'f', '(f) determining the final melt flow rate (5 kg, 190° C.) (MFR) of the modified polyethylene obtained from step (e),'}{'sub': f', '0, 'claim-text': {'br': None, 'sub': 'f', 'i': '×e', 'sup': '−μX', 'MFR=MFR0\u2003\u2003(I)'}, 'characterized in that the final melt flow rate (5 kg, 190° C.) (MFR) of the modified polyethylene fulfills an exponential decay defined by equation (I) with respect to the starting melt flow rate (5 kg, 190° C.) (MFR) and the concentration (X) of the peroxide based on the amount of polyethylene,'}wherein μ is an exponential decay constant and is from 0.0005 to 0.005.2. The process according to claim 1 , characterized in that the ...

STRAIN GAUGE POLYMER COMPRISING PHOTOCHROMIC COLORANT

A composite manufacture includes an extrudable thermoplastic matrix and a photochromic colorant, the photochromic colorant conferring to the composite a reversible strain-induced color change property. Methods include adding photochromic colorant to an extrudable thermoplastic polymer matrix to form a mixture, heating the mixture to form a composite, the photochromic colorant conferring to the composite a reversible strain-induced color change property. The composite manufactures can be used in cable coatings permitting visual detection of mechanical stresses in a wire based on the reversible strain-induced color change property. 1. A composite manufacture comprising:an extrudable thermoplastic matrix; and 'wherein the photochromic colorant confers to the composite a reversible strain-induced color change property.', 'a photochromic colorant;'}2. The composite manufacture of claim 1 , wherein the extrudable thermoplastic matrix is acrylonitrile-butadiene-styrene.3. The composite manufacture of claim 1 , wherein the photochromic colorant color change is also reversible with respect to light-induced color change.5. The composite manufacture of claim 1 , wherein the photochromic colorant is present in an amount in a range from about 0.1 percent by weight of the composite to about 5.0 percent by weight of the composite.6. The composite manufacture of claim 1 , wherein reversible strain-induced color change property is reversible by applying heat to the composite.7. The composite manufacture of formed into a filament claim 1 , film or coating.8. The composite manufacture of claim 1 , wherein the composite has an elastic modulus in a range from about 0.01 Gigapascal to about 4.0 Gigapascal.9. The composite manufacture of claim 1 , wherein the composite has a flexural modulus in the range of 2 GPa to about 0.1 GPa.10. A method comprising:adding photochromic colorant to an extrudible thermoplastic polymer matrix to form a mixture; 'wherein the photochromic colorant confers ...

CROSSLINKED POLYVINYLPYRROLIDONE COMPOSITIONS

Low-dusting, granular compositions are provided that comprise at least 15% by weight crosslinked polyvinylpyrrolidone. 113-. (canceled)14. A method for the preparation of beverages comprising contacting said beverages with a granular composition comprising at least about 15% (w/w) crosslinked polyvinylpyrrolidone (PVPP) and wherein particles 100 μm and smaller make up 10% (w/w) or less of said composition.15. The method of wherein said preparation involves the removal of polyphenol claim 14 , protein claim 14 , or both polyphenol and protein.16. The method of wherein said beverage is an alcoholic beverage or a non-alcoholic beverage.17. The method of wherein said alcoholic beverage comprises: beer or wine.18. The method of wherein said non-alcoholic beverage comprises: fruit juice claim 16 , tea claim 16 , or blends thereof.19. (canceled)20. A method for producing low-dusting PVPP compositions claim 16 , said method comprising: (A0 compacting feedstock having at least 15% (w/w) crosslinked polyvinylpyrrolidone claim 16 , and (B) breaking said feedstock into granules claim 16 , grains claim 16 , or particles. This application claims priority to provisional patent application No. 61/119,463, which was flied on Dec. 3, 2008.The invention relates to low-dusting, crosslinked polyvinylpyrrolidone compositions, methods to produce them, and their uses, especially in beverage treatment.Crosslinked polyvinylpyrrolidone (PVPP), known by the generic chemical name crospovidone in pharma applications, is a water-insoluble, water-swellable, hydrophilic polymer that finds application in multiple industries. It is used in the beverage industries as a drink clarifier and stabilizer, where it binds polyphenols that may lead to astringent flavors anchor hazing (clouding). The complexations through hydrogen bonding and/or dipolar interactions also enable PVPP to serve as a dye scavenger for printing and laundry applications. Finally, due to its compressibility and swelling capacity, ...

POLYVINYL ALCOHOL POWDER AND METHOD FOR PRODUCING SAME

The present invention is characterized by being a polyvinyl alcohol powder having an average particle diameter of 100 to 2000 μm as measured by optical microscopic observation at a humidity of 65% RH and a temperature of 25° C., having a bulk specific gravity (g/ml) of a portion ranging from 500 to 1000 μm in particle diameter of more than 0.60 and less than 0.80, and having a content of the portion ranging from 500 to 1000 μm in particle diameter of 35 to 70% by mass. Accordingly, a polyvinyl alcohol powder is provided, that is good in anti-scattering property, superior in solubility in preparing an aqueous solution from the powder, and capable of reducing transport costs due to its large specific gravity. 1. A polyvinyl alcohol powder having an average particle diameter of 100 to 2000 μm as measured by optical microscopic observation at a humidity of 65% RH and a temperature of 25° C. , having a bulk specific gravity (g/ml) of a portion ranging from 500 to 1000 μm in particle diameter of more than 0.60 and less than 0.80 , and having a content of the portion ranging from 500 to 1000 μm in particle diameter of 35 to 70% by mass.2. The polyvinyl alcohol powder according to claim 1 , having a viscosity-average degree of polymerization of 200 to 5000 and a degree of saponification of 50 to 99.99 mol %.3. A method for producing a polyvinyl alcohol powder claim 1 , comprising:an introduction step of introducing a saponification catalyst into a central portion of a flow path in which a saponification raw solution comprising a polyvinyl ester and an organic solvent flows, and{'sup': '−1', 'a mixing step of mixing the saponification raw solution with the introduced saponification catalyst using a static mixer at a shear rate of 5 to 90 s.'} The present invention relates to a polyvinyl alcohol powder having a specific average particle diameter and a specific bulk specific gravity, and a method for producing the polyvinyl alcohol powder.Polyvinyl alcohol is a synthetic resin ...

POLYPROPYLENE COMPOSITION

The invention relates to a process to produce irradiated polypropylene granulate wherein granulate comprising 1. a propylene polymer and 2. a vitamin E comprising stabilizer package is irradiated by electron beam radiation. 1. A process to produce irradiated polypropylene granulate characterised in that granulate comprising:1. propylene polymer, and2. vitamin E comprising stabilizer package,is irradiated by electron beam irradiation.2. The process according to claim 1 , wherein the irradiated polypropylene granulate has{'sup': '−1', 'a strain hardening coefficient as determined via extensional viscosity measurement at a temperature of 170° C. at a strain elongation rate of 1.0 smeasured at 2.75 s of ≥8.0;'}a zero shear viscosity as determined using DMS with fit according to the Cross-model of ≥7000 Pa·s; and{'sub': '0.01', 'degree of shear thinning defined as the ratio of complex viscosity η* at a frequency of 10 rad/s:complex viscosity at a frequency of 0.01 rad/s (η) of ≤0.15, wherein the complex viscosity is determined via DMS'}wherein for determining the DMS spectrum, an ARES G2 rheometer was used at 200° C. measuring at frequencies of 0.01 rad/s to 100 rad/s, at a linear viscoelastic strain of 5%, using plates of 0.5 mm thickness produced according to ISO 1872-2 (2007).3. The process according to claim 1 , wherein the amount of vitamin E in the composition of polypropylene and Vitamin E is lower than 0.5 wt % relative to the amount of polypropylene.4. The process according to claim 1 , wherein Vitamin E is α-tocopherol.5. The process according to claim 1 , wherein the dose applied in electron beam irradiation ranges between 10 and 200 KGy.6. A foamed object obtained with irradiated polypropylene granulate obtained with the process according to .7. The process according to claim 2 , wherein the amount of vitamin E in the composition of polypropylene and Vitamin E is lower than 0.5 wt % relative to the amount of polypropylene claim 2 , and wherein Vitamin E is α- ...