ВСПЕНЕННЫЕ ПРОКЛАДКИ, ПОЛУЧАЕМЫЕ ИЗ ГОМОГЕННЫХ ОЛЕФИНОВЫХ ПОЛИМЕРОВ

Изобретение относится к вспененным прокладкам и способу их формования. Вспененная прокладка содержит, по меньшей мере, один гомогенно разветвленный полимер этилена и, по меньшей мере, один газообразующий агент. Полимер имеет плотность от 0,85 до 0,93 г/см3, молекулярно-массовое распределение Мw/Mn от 1,5 до 2,5 и индекс распределения короткоцепочечных разветвлений - больший, чем 50%. Полученные прокладки являются особенно пригодными для использования при герметизации контейнеров с пищевыми продуктами и жидкостями и не привносят вкуса и/или запаха в упакованный продукт, что является особенно полезным в применениях для упаковки пищевых продуктов. 2 с. и 10 з.п. ф-лы, 3 табл.

ЭЛЕКТРОИЗОЛЯЦИОННАЯ ПОЛИМЕРНАЯ КОМПОЗИЦИЯ И ЭЛЕКТРИЧЕСКИЙ ПРОВОД ИЛИ КАБЕЛЬ С ПОКРЫТИЕМ ИЗ ТАКОЙ КОМПОЗИЦИИ

Описываются электроизоляционная полимерная композиция, превосходная по электрическим эксплуатационным свойствам и технологичности, и электрический провод или кабель с покрытием из такой композиции. Электроизоляционная полимерная композиция содержит от 60 до 90 мас.% сополимера (А) этилена и α-олефина, полученного сополимеризацией с помощью одноцентрового катализатора, и от 40 до 10 мас.% иной полиолефиновой смолы (В), чем сополимер (А), и содержит полиолефин, содержащий привитые к нему заместители, имеющие дипольный момент 4 Д или выше. В одном из вариантов выполнения изобретения в качестве полупроводящего слоя использована полупроводящая композиция. В частном случае сополимер этилена и α-олефина получен сополимеризацией с помощью катализатора Циглера-Натти. Техническим результатом является улучшение технологичности. 4 н. и 4 з.п. ф-лы, 2 табл.

ФОРМУЕМАЯ КОМПОЗИЦИЯ, СОДЕРЖАЩАЯ ПОЛИЭТИЛЕН, ДЛЯ ИЗГОТОВЛЕНИЯ ПЛЕНОК И СПОСОБ ПОЛУЧЕНИЯ ФОРМУЕМОЙ КОМПОЗИЦИИ В ПРИСУТСТВИИ СМЕШАННОГО КАТАЛИЗАТОРА

Изобретение относится к формуемой композиции на основе полиэтилена, предназначенной для получения пленок. Композиция содержит полиэтилен и традиционные добавки, имеет плотность в интервале 0,915-0,955 г/см3, индекс расплава MI в интервале от более 0 до 3,5 г/10 мин, отношение степени текучести расплава HLMI/MI в интервале 5-50 и полидисперсность Mw/Mn в интервале 5-20. При этом z-средней молекулярной массы Mz формуемой композиции менее 1 миллион г/моль. Формуемую композицию получают в одном реакторе в присутствии смешанного катализатора, содержащего предварительно полимеризованное соединение хрома и металлоцен. Пленки, содержащие формуемые композиции по настоящему изобретению, обладают очень хорошими механическими свойствами, высоким сопротивлением удару и большой прочностью на разрыв в сочетании с очень хорошими оптическими свойствами, в частности прозрачностью и глянцем. Они пригодны, в частности, для изготовления упаковки, например, в качестве термосвариваемых пленок как в мешках для ...

КОНСТРУКЦИЯ, СОДЕРЖАЩАЯ СВЯЗЫВАЮЩИЙ СЛОЙ

Изобретение относится к слоеной структуре, подходящей для использования в пневматической шине в качестве внутреннего слоя. Способ изготовления слоистой структуры включает следующие стадии: (A) формирование клейкой связывающей композиции, содержащей смесь: (1) 100 мас.%, в расчете на общую массу эластомера в клейкой связывающей композиции, по меньшей мере одного галоидированного, содержащего изобутилен эластомера; (2) от приблизительно 20 до приблизительно 50 мас.%, в расчете на общую массу клейкой связывающей композиции, по меньшей мере одного наполнителя; (3)от приблизительно 0 до приблизительно 30 мас.%, в расчете на общую массу клейкой связывающей композиции, по меньшей мере одного технологического масла; (4) от приблизительно 1 до приблизительно 20 частей на сотню (phr) по меньшей мере одного агента, придающего клейкость; и (5) от приблизительно 0,1 до приблизительно 15 частей на сотню частей каучука (phr) вулканизующей системы для упомянутых эластомеров; (B) формирование композиции ...

ПОЛИПРОПИЛЕН ДЛЯ ПЕНОПЛАСТА И ПЕНОПОЛИПРОПИЛЕНА

Изобретение относится к полипропиленовой композиции для пенопласта, способу получения полипропиленовой композиции и пенопласта и к вспененным изделиям, полученным из полипропиленовой композиции. Композиция содержит полипропиленовый базовый полимер в количестве не менее 96 масс.% от общей массы полипропиленовой композиции и содержание веществ, нерастворимых в горячем ксилоле, в количестве от 0.10 до 0.30 масс.% от общей массы полипропиленовой композиции. При этом композиция имеет показатель текучести расплава, (ПТР) составляющий по меньшей мере от 1,0 до 5,0 г/10 мин, прочность расплава F30 - не менее 30 сН, определенную в испытании Rheotens при 200°C, и растяжимость расплава v30 - менее 200 м/с, определенную в испытании Rheotens при 200°C. Способ получения композиции включает получение промежуточного полипропилена, имеющего ПТРв количестве от 0,5 до 2,5 г/10 мин, в присутствии асимметрического катализатора. После чего промежуточный полипропилен смешивают с пероксидом и по меньшей мере с ...

ЭЛАСТИЧНАЯ ПЛЕНКА, СОДЕРЖАЩАЯ ВОЗОБНОВЛЯЕМЫЙ ПОЛИМЕР КРАХМАЛА

Изобретение относится к пленке, которую применяют в составе разнообразных одноразовых изделий, например подгузников, гигиенических салфеток, одежды для взрослых, страдающих недержанием, перевязочного материала и т.д. Эластичная пленка, включающая термопластическую композицию, где термопластическая композиция включает по меньшей мере один полимер крахмала, составляющий от приблизительно 1 мас.% до приблизительно 30 мас.% от содержания полимеров в пленке, по меньшей мере один эластомерный полимер, составляющий от приблизительно 30 мас.% до приблизительно 95 мас.% от содержания полимеров в пленке и по меньшей мере один пластификатор, составляющий от приблизительно 0,1 мас.% до приблизительно 30 мас.% от массы пленки, причем массовое отношение количества эластомерных полимеров к количеству полимеров крахмала в пленке составляет от приблизительно 1 до приблизительно 10 и удлинение эластичной пленки как в машинном направлении, так и в поперечном направлении составляет приблизительно 250 % или ...

ЭЛАСТОМЕРНЫЕ СМЕСИ НА ИЗОБУТИЛЕНОВОЙ ОСНОВЕ, ОБЛАДАЮЩИЕ ПОВЫШЕННОЙ ПРОЧНОСТЬЮ И ЭЛАСТИЧНОСТЬЮ И ПОНИЖЕННОЙ ПРОНИЦАЕМОСТЬЮ

Изобретение относится к полимерам на изобутиленовой основе, в частности к галоидированным полимерам, обладающим повышенной прочностью до обработки и повышенной непроницаемостью, а также к способу их получения. Барьерный тонкий слой для резиновых изделий включает полимер на изобутиленовой основе и 3-95 мас.% полукристаллического полимера, обладающего температурой плавления от примерно 25 до примерно 105°С и теплотой плавления от примерно 9 до примерно 50 Дж/г, как это определяют дифференциально сканирующей калориметрией, причем этот тонкий слой невулканизован. Барьерный тонкий слой используют для внутренней оболочки шины и автомобильной камеры. В смеси для резиновых изделий содержится полукристаллический пропиленовый полимер с содержанием примерно 75 мас.% пропиленовых звеньев. Приготавливают смесь на обычном оборудовании резинового производства. Технический результат состоит в улучшении прочности до обработки, относительного удлинения до обработки и релаксационных свойств до обработки при ...

БИМОДАЛЬНЫЙ ПОЛИЭТИЛЕН ВЫСОКОЙ ПЛОТНОСТИ С УЛУЧШЕННОЙ СТОЙКОСТЬЮ К РАСТРЕСКИВАНИЮ ПОД ВОЗДЕЙСТВИЕМ ОКРУЖАЮЩЕЙ СРЕДЫ ДЛЯ ФОРМОВАНИЯ РАЗДУВОМ

Изобретение относится к бимодальной полиэтиленовой композиции и формованной раздувом бутыли, выполненной из нее. Композиция включает по меньшей мере один высокомолекулярный полиэтиленовый и по меньшей мере один низкомолекулярный полиэтиленовый компонент. Высокомолекулярный полиэтиленовый компонент композиции имеет молекулярно-массовое распределение примерно от 6 до 9, содержание короткоцепочечного разветвления менее примерно 2 разветвлений на 1000 углеродных атомов главной цепи и Mz примерно 1100000 или более. При этом отношение средневесовой молекулярной массы высокомолекулярного полиэтиленового компонента к средневесовой молекулярной массе низкомолекулярного полиэтиленового компонента составляет менее 20. Композиция по изобретению имеет плотность более 0,94 г/см3, стойкость к растрескиванию под воздействием окружающей среды более 600 ч и процент разбухания экструдата более 70%, а также хорошие характеристики механической прочности, подходящие для формования раздувом, включая бутыли. 3 ...

ПОЛИЭТИЛЕНОВЫЕ КОМПОЗИЦИИ, СПОСОБ ИХ ПОЛУЧЕНИЯ, ИЗГОТОВЛЕННЫЕ ИЗ НИХ ИЗДЕЛИЯ И СПОСОБ ИЗГОТОВЛЕНИЯ УКАЗАННЫХ ИЗДЕЛИЙ

В группе изобретений раскрыта полиэтиленовая композиция, способ ее получения, изготовленные из нее изделия и способ изготовления указанных изделий. Полиэтиленовая композиция включает (1) меньше или равно 100% масс. блоков, полученных из этилена; и (2) меньше чем 15% масс. блоков, полученных из одного или нескольких α-олефиновых сомономеров. Полиэтиленовая композиция имеет плотность в диапазоне от 0,907 до 0,975 г/см, молекулярно-массовое распределение (M/M) в диапазоне от 1,70 до 3,62, индекс расплава (I) в диапазоне от 2 до 1000 г/10 минут, молекулярно-массовое распределение (M/M) в диапазоне меньше чем 2,5 и винильную ненасыщенность меньше чем 0,06 винилов на одну тысячу атомов углерода, присутствующих в скелете указанной композиции. Способ получения полиэтиленовой композиции включает следующие стадии: (1) (со)полимеризация этилена и, по меньшей мере, одного или нескольких α-олефиновых сомономеров в присутствии металлоценового катализатора на основе гафния посредством процесса газофазной ...

СПОСОБ ПОЛУЧЕНИЯ КОМПОЗИЦИИ СОПОЛИМЕРОВ ЭТИЛЕНА И АЛЬФА-ОЛЕФИНОВ, КОМПОЗИЦИЯ СОПОЛИМЕРОВ ЭТИЛЕНА И АЛЬФА-ОЛЕФИНОВ

Раскрывается способ полимеризации с получением этилен/α-олефиновых сополимерных композиций. Композиции сополимеров обладают контролируемым составом и контролируемым молекулярно-массовым распределением. Способ основан на использовании высокоэффективной композиции гомогенного катализатора в, по меньшей мере, одном реакторе для получения первого сополимера, обладающего узким распределением по составу и узким молекулярно-массовым распределением, и высокоэффективного гетерогенного катализатора Циглера в, по меньшей мере, одном другом реакторе. В зависимости от желаемого конечного продукта реактора могут работать последовательно или параллельно. Новые композиции обладают хорошими оптическими свойствами (прозрачностью и мутностью) и хорошими физическими свойствами (например, модулем, пределом текучести, ударной вязкостью и прочностью на раздир). Из таких композиций могут быть получены пленки, формованные изделия и волокна. 2 с. и 10 з.п., 15 табл.

КОМПОЗИЦИЯ НЕУПОРЯДОЧЕННОГО CCСОПОЛИМЕРА С УЛУЧШЕННЫМ БАЛАНСОМ МЕЖДУ ТЕМПЕРАТУРОЙ НАЧАЛА СВАРИВАНИЯ И ТЕМПЕРАТУРОЙ ПЛАВЛЕНИЯ

Изобретение относится к композиции C-Cнеупорядоченного сополимера. Композиция C-Cнеупорядоченного сополимера содержит 3 полимерные фракции (А), (В) и (С) с различным содержанием сомономеров. Фракция (А) включает 30-65 масс.% C-Cнеупорядоченного сополимера с содержанием этилена (СА) 0,4-1,5 масс. % от общей массы сополимера (А), как измерено при использовании инфракрасной спектроскопии Фурье с преобразованием (FTIR). Фракция (В) включает 25-50 масс.% C-Cнеупорядоченного сополимера с содержанием этилена (СВ) 3,0-10,0 масс.% от общей массы сополимера (В). Фракция (С) включает 5-35 масс.% C-Cнеупорядоченного сополимера с содержанием этилена (СС) 7,0-15,0 масс.% от общей массы сополимера (С). Сумма 3 полимерных фракций (А), (В) и (С) составляет 100%, и при этом содержание сомономера в полимерных фракциях увеличивается от фракции (А) к фракции (С) согласно (СА)<(СВ)<(СС). Технический результат - улучшенный баланс между температурой начала сваривания (SIT) и температурой плавления (Тm), хорошие ...

ПОЛИПРОПИЛЕНОВАЯ СМЕСЬ ДЛЯ ТРУБ

Изобретение относится к β-нуклеированным полипропиленовым смесям. Описана полипропиленовая смесь для получения труб. Смесь включает компонент (А), представляющий собой гомо- или сополимер пропилена, полученный с применением системы катализатора с единым центром полимеризации, и имеющий скорость течения расплава СТР(230°C) не более чем 0,9 г/10 мин, и компонент (Б), представляющий собой второй гомо- или сополимер пропилена, полученный с применением катализатора Циглера-Натта, и имеющий СТР(230°C) от 0,03 до 20 г/10 мин, который расширяет молекулярно-массовое распределение с точки зрения индекса полидисперсности (ИП) всей композиции. Компонент (А), и/или компонент (Б), и/или композиция полипропиленовой смеси являются β-нуклеированными. Смесь имеет индекс уменьшения вязкости SHI (0/50), измеренный в соответствии с ISO 6271-10, от 10 до 85. Также описано применение полипропиленовой смеси для получения однослойных труб или одного из слоев многослойных труб. Технический результат - получение ...

ТРУБА ИЗ МУЛЬТИМОДАЛЬНОГО ПОЛИЭТИЛЕНА

Изобретение относится к композиции мультимодального полиэтилена. Композиция мультимодального полиэтилена содержит (А) 51-58 мас.ч. низкомолекулярного полиэтилена или среднемолекулярного полиэтилена, полученного путем полимеризации в первом реакторе, (В) 12-21 мас.ч. первого высокомолекулярного полиэтилена или первого сверхвысокомолекулярного полиэтилена, полученного путем полимеризации во втором реакторе, и (С) 27-33 мас.ч. второго высокомолекулярного полиэтилена или второго сверхвысокомолекулярного полиэтиленового сополимера, полученного путем полимеризации в третьем реакторе. Полиэтилен, полученный в каждом реакторе, обладает отличающейся молекулярной массой. Соотношение Mw/Mn между среднемассовой молекулярной массой Mw композиции мультимодального полиэтилена и среднечисленной молекулярной массой Mn композиции мультимодального полиэтилена находится в диапазоне 10-23. Композиция мультимодального полиэтилена характеризуется высокой стойкостью к ударным нагрузкам по Шарпи, улучшенным балансом ...

КОНТЕЙНЕР ИЗ МУЛЬТИМОДАЛЬНОГО ПОЛИЭТИЛЕНА

ТЕРМОПЛАВКИЙ КЛЕЙ

... 1. Термоплавкий клей, содержащий ! (А) некристаллический поли-альфа-олефин, ! (В) кристаллический поли-альфа-олефин, полученный полимеризацией альфа-олефина в присутствии металлоценового катализатора, и ! (С) гидрированный термопластичный блоксополимер, который представляет собой сополимер винилсодержащего ароматического углеводорода и сопряженного диенового соединения. ! 2. Термоплавкий клей по п.1, где (С) гидрированный термопластичный блоксополимер представляет собой гидрированный блоксополимер стирол-изопрен-стирол. ! 3. Термоплавкий клей по п.1, где (В) кристаллический поли-альфа-олефин присутствует в соотношении 10-40 мас. ч. на 100 мас. ч. объединенных компонентов (А), (В) и (С). ! 4. Изделие, содержащее термоплавкий клей по п.2. ! 5. Изделие по п.4, которое представляет собой ламинированное изделие. ! 6. Изделие по п.5, включающее нетканый лист, соединенный с пленкой из пластика. ! 7. Изделие по п.5, которое представляет собой паропроницаемый ламинированный материал. ! 8. Изделие ...

СОСТАВ ПОЛИЭТИЛЕНА ДЛЯ ЛИТЬЯ ПОД ДАВЛЕНИЕМ

КОМПОЗИЦИЯ ПОЛИЭТИЛЕНОВОЙ СМЕСИ, ПРИ ИСПОЛЬЗОВАНИИ КОТОРОЙ СНИЖАЕТСЯ НАРАСТАНИЕ ПЛЕНКИ НА ОХЛАЖДАЮЩИХ ВАЛКАХ ВО ВРЕМЯ ПРОЦЕССА ЭКСТРУЗИИ

... 1. Композиция полиэтиленовых смесей, при использовании которой снижается нарастание пленки на охлаждающих валках во время процесса экструзии, содержащая:(а) от 60 до 95 процентов по массе композиции линейных полиэтиленов, включающей:менее или равное 100 процентам по массе звеньев, полученных от этилена;менее 15 процентов по массе звеньев, полученных от одного или нескольких α-олефиновых сомономеров; где упомянутая композиция линейных полиэтиленов имеет плотность в диапазоне от 0,917 до 0,975 г/см, молекулярно-массовое распределение (M/M) в диапазоне от 1,70 до 3,62, индекс расплава (I) в диапазоне от 2 до 50 г/10 минут, и винильную ненасыщенность в диапазоне от менее 0,06 винилов на одну тысячу атомов углерода, присутствующих в композиции линейных полиэтиленов;(b) от 5 до 40 процентов по массе композиции полиэтиленов низкой плотности (LDPE), имеющей плотность в диапазоне от 0,915 до 0,930 г/см, индекс расплава (I) в диапазоне от 0,4 до 10 г/10 минут;где композиция полиэтиленовых смесей ...

Folien Hergestellt aus Propylen, Hochalpha-Olefinpolymere

Vernetzte Schaumstrukturen von hauptsächlich linearen Polyolefinen und Verfahren zur Herstellung

ZUSAMMENSETZUNGEN VON POLYPROPYLEN UND ELASTISCHEN COPOLYMERE VON ALPHA-OLEFINEN UND CYCLISCHEN COMONOMEREN

CHEMISCH VERÄNDERTE OLEFINZUSAMMENSETZUNGEN

Expandierte Teilchen aus Polypropylenharz

THERMOFORMBARER VERPACKUNGSFILM

Ethylencopolymerzusammensetzung

POLYMERZUSAMMENSETZUNG MIT VERBESSERTER TEMPERATURBESTÄNDIGKEIT

LINEARE ETHYLEN-COPOLYMERMISCHUNGEN VON COPOLYMEREN MIT ENGEN MOLEKULARGEWICHTS- UND KOMPOSITIONSVERTEILUNGEN

OLEFINPOLYMERISATE MIT VERBESSERTER VERARBEITUNG

Verwendung von Polyolefinwachsen in Heissschmelzmassen

Heißschmelzmassen enthaltend ein oder mehrere Polyolefinwachse, die mit Hilfe von Metallocenkatalysatoren hergestellt wurden, einen Tropf- oder Erweichungspunkt Ring/Kugel zwischen 80 und 165°C, eine Schmelzviskosität, gemessen bei einer Temperatur von 170°C, zwischen 20 und 40000 mPa·s und eine Glasübergangstemperatur von maximal –10°C aufweisen, dadurch gekennzeichnet, dass die Polyolefinwachse mit einem Gewichtsanteil von größer oder gleich 50 Gew.-% in den Heißschmelzmassen enthalten sind, wobei in den Heißschmelzmassen das eine oder die mehreren Polyolefinwachse Copolymerwachse sind aus Propylen und Ethylen, und der Gehalt an Struktureinheiten hervorgegangen aus Propylen in den Copolymerwachsen von 70 bis 99,9 Gew.-% beträgt.

Hochgeladene Antikondensationsmasterbatche durch den Einsatz von Metallocen-Wachsen

Wirkstoffmittelzusammensetzung, enthaltend hohen Anteil flüssiger oder leicht fließender Antikondensationsmittel und ein oder mehrere Polyolefinwachse, wobei der mengenmäßig größere Anteil ein Metallocenwachs darstellt und wobei die weiteren Wachse polare oder unpolare Nicht-Metallocen-Polyolefinwachse sind. Alle Polyolefinwachse machen zusammen mindestens 10 Gew.-% der Rezeptur aus und schmelzen zwischen 80 und 170°C. Die erfindungsgemäße Wirkstoffmittelzusammensetzung ist staubreduziert und wird für die Masterbatchproduktion verwendet.

COEXTRUDIERTE GESTRECKTE FILME

HERSTELLUNG VON VINYL ENTHALTENDEN POLYMEREN

Laminat und dessen Verwendung insbesondere als medizinisches Trägermaterial

Laminat bestehend aus zumindest einer Schicht aus einem elastischen Polymerfilm und einer zweiten Schicht aus einem elastischen textilen Flächengebilde, wobei das fertige Laminat mikro- und/oder makrogeprägt ist, dadurch gekennzeichnet, dass der Polymerfilm auf der Oberfläche eine Mikroprägung aufweist und die erste und zweite Schicht vollflächig verbunden sind, wobei Fasern des textilen Flächengebildes aus elastischem Polymermaterial bestehen und vom Polymerfilm umschlossen werden.

AUTOKLAVIERBARE, NICHT KLEBENDE, HEISSIEGELBARE POLYMERMISCHUNGEN ZUR HERSTELLUNG VON FOLIEN AUS EINER ODER MEHREREN SCHICHTEN

1-BUTEN-PROPYLEN-COPOLYMER-ZUSAMMENSETZUNGEN

Elastische, im wesentlichen lineare Olefinpolymere

OFFENZELLIGE GESCHÄUMTE GEGENSTÄNDE ENTHALTEND MIT SILAN GEPFROPFTE POLYOLEFINHARZE

Novel polymer compositions

Patchy bag comprising homogeneous ethylene/alpha-olefin copolymer

Patch bag comprising homogeneous ethylene/alpha-olefin copolymer

A patch bag has a heat-shrinkable patch 24 adhered to a heat-shrinkable bag 22, the patch comprising a heat-shrinkable monolayer patch film of from about 2 to 8 mils thickness which comprises homogeneous ethylene/alpha-olefin copolymer in an amount of from about 5 to 100% (preferably 15 to 85%) by weight. The patch film has a total free shrink at 85 degrees C of from about 10 to 100%. The homogeneous ethylene/alpha-olefin copolymer may be linear or long chain branched and may be blended with heterogeneous ethylene/alpha-olefin copolymer.

Patch bag comprising homogeneous ethylene/alpha-olefin copolymer

Patch bag comprising homogeneous ethylene/alpha-olefin copolymer

Sound-deadening composites of metallocene copolymers for use in vehicle applications

Method of improving scuff and cut resistance of ionomer covered game ball

THERMOPLASTIC ELASTOMERS

PHYSICAL POLYETHYLENE MIXTURES

FIBERS FROM ISO-TACTICAL PROPYLENE COPOLYMER, THEIR PRODUCTION AND USE

METALLOCENKATALYSATOREN MANUFACTURED POLYETHYLENE MUCH LOW DENSITY

POLYETHYLENE AND PROCEDURE FOR ITS PRODUCTION

THERMALDUCTILE PACKING FILM

PACKING LAMINATE, PROCEDURE FOR ITS PRODUCTION AND FROM THE PACKING LAMINATE OF MANUFACTURE PACKING CONTAINERS

ELASTOMERS COMPOSITION ON BASIS OF PROPYLENE

METALLOCENE CATALYZED CONTAINING FOILS

INTERLACED POLYETHYLENE WITH OUTSTANDING INHIBITION OF SCHWEISSAUSTRITTSUND DAMMING CHARACTERISTICS

COLORED PIPES TO THE TRANSPORT OF DESINFEKTIONSMITTELHALTIGEM WATER

HETEROGENEOUS ONE POLYMERBLENDS AND FORMKÍRPER FROM IT

ADHESIVE COMPOSITION ON POLYPROPYLENE BASIS

ETHYL COPOLYMERS AND OF IT MAKING OF FILMS

ELASTOMERS COMPOSITIONS

PROCEDURES FOR THE PRODUCTION OF SYNTHETIC FILAMENTS FROM ONE PLASTIC-DAZZLE

MULTIMODALE POLYETHYLENE COPOLYMER RESIN COMPOSITION, MANUFACTURING PROCESS FOR IT AND THIS COMPREHENSIVE POLYMER PRODUCT

HIGHLY FLEXIBLE POLYOLEFIN FOAM MATERIAL CONTAINING CHLORINATED POLYETHYLENE

PIPES TO THE TRANSPORT OF CHLORIC WATER

PIPES TO THE TRANSPORT OF CHLORDIOXIDHALTIGEM WATER

PROCEDURE FOR THE PRODUCTION OF AMORPHOUS ALPHAOLEFINPOLYMEREN, THESE CONTAINING COMPOSITIONS AND PROCEDURES FOR THE PRODUCTION OF VERB-MOVED LIGANDS

COMPOSITIONS FROM ETHYLEN/ALPHA OLEFINMULTIBLOCK MORE INTERPOLYMER FOR FLEXIBLE FOILS AND LAMINATES

MOLDING MATERIALS FOR EXTRUDING WITH HIGH PASSAGE AND SUBSTANTIAL OF REDUCED CONSTRICTION

HIGH-SPEED EXTRUDING PROCEDURE

DURCHLÖCHERUNGSSICHERE KUNSTSTOFFOLIEN, MISCHUNGEN UND VERFAHREN

POLYMERE ONE OF THE PROPENS

PROCEDURE FOR THE PRODUCTION OF POLYMER MIXTURES WITH SPREADING A MOLECULAR WEIGHT DISTRIBUTION IN ONLY ONE REACTOR

CHANGE OF RHEOLOGY IN POLYETHYLENE OF LOW DENSITY

POLYMER COMPOSITION WITH IMPROVED TEMPERATURE STABILITY

YIELD COMPOSITIONS ON BASIS OF PROPYLENE POLYMERS

PROCEDURE FOR THE PRODUCTION OF WASHCASH, DRYING AND FLEXIBLE ARTICLES

INTERLACED COMPOSITIONS FROM SILANE MODIFIED POLYOLEFINS AND POLYPROPYLENE

POLYOLEFINS AND YOUR USE

FILLED POLYMER COMPOSITIONS

HEISSIEGELFÄHIGE FILMS

PROCEDURE FOR THE PRODUCTION OF AN ETHYL COPOLYMER AND A OLEFINPOLYMERS AND CATALYST FOR OLFINPOLYMERISATION

BIAXIAL ORIENTED POLYPROPYLENE FOIL WITH INCREASED DIMENSIONAL STABILITY

INTERLACED FOAM-CASH COMPOSITIONS FROM SILANE GRAFTING MAIN LINEAR POLYOLEFINS, IN MIXTURE WITH POLYPROPYLENE

PRODUCTION OF MULTIMODALEM POLYETHYLENE

MULTIMODAL POLYETHYLENE MATERIAL

MIDDLE DENSITY POLYETHYLENE COMPOSITIONS FOR FOILS

HETEROPHASI PROPYLENE POLYMER

IN LIQUID FORM ADDING MULTIPLE CATALYSTS

POLYOLEFIN FOIL WITH LARGE OXYGEN PERMEABILITY

PROCEDURE FOR THE PRODUCTION OF BIMODALEN POLYOLEFINS WITH METALLOCENKATALYSATOREN IN TWO REACTION ZONES

ETHYL KOPOLYMER MIXTURES WITH CLOSE MOLECULAR WEIGHT DISTRIBUTION AND OPTIMIZED COMPOSITION, PROCEDURES FOR YOUR PRODUCTION AND YOUR USE

POYOLEFINSCHAUMFOLIEN AND POLYOLEFIN COATINGS OF SUBSTRATES

THERMOPLASTIC ELASTOMERS

PHYSICAL POLYETHYLENE MIXTURES

THERMOPLASTIC ELASTOMERS

THERMOPLASTIC ELASTOMERS

Polyethylene composition suitable for the preparation of films and process for preparing the same

A polyethylene composition, in particular suitable for the preparation of films, and a process for preparing the same are described. The polyethylene composition of the invention comprises from 50 to 89% by weight of a first polyethylene component comprising at least one multimodal polyethylene including a plurality of ethylene polymer fractions having distinct molecular weights and comonomer contents, at least one of said plurality of ethylene polymer fractions being prepared by the use of a single site catalyst, and from 50 to 11% by weight of a second polyethylene component comprising a low or medium density polyethylene.

Rotational molded articles, and method of making the same

The instant invention provides rotational molded articles, and method of making the same. The rotational molded articles according to the present invention comprise a polyethylene composition comprising: (a) at least 85 percent by weight of the units derived from ethylene; and (b) less than 15 percent by weight of units derived from one or more α-olefin comonomers; wherein the polyethylene composition has a density in the range of 0.930 to 0.945 g/cm3, a molecular weight distribution (M w /M n ) in the range of 1.70 to 3.50, a melt index (I 2 ) in the range of 0.5 to 20 g/10 minutes, a molecular weight distribution (M z /M w ) in the range of less than 2.5, vinyl unsaturation of less than 0.06 vinyls per one thousand carbon atoms present in the backbone of the polyethylene composition.

Polymer Compositions for Rotational Molding Applications

A polymer having a density of from about 0.94 g/cm 3 to about 0.96 g/cm 3 and a primary structure parameter 2 (PSP2 value) of greater than about 8.5, wherein an article formed from the polymer has an environmental stress crack resistance of equal to or greater than about 1000 hours when measured in accordance with ASTM D 1693 condition A. A polymer having at least one lower molecular weight component and at least one higher molecular weight component and having a PSP2 value of equal to or greater than about 8.5, wherein an article formed from the polymer has an environmental stress crack resistance of greater than about 1000 hours when measured in accordance with ASTM D 1693 condition A.

Heterophasic Polypropylene Resin with Long Chain Branching

Heterophasic polypropylene resin having a MFR (2.16 kg, 230° C.) of at least 1.0 g/1 Omin, determined according to ISO 1133, comprising a propylene random copolymer matrix phase (A), and an ethylene-propylene copolymer rubber phase (B) dispersed within the matrix phase, wherein the heterophasic polypropylene resin has a fraction soluble in p-xylene at 25° C. (XCS fraction) being present in the resin in an amount of 15 to 45 wt % whereby the XCS fraction has an ethylene content of 25 wt % or lower, and a fraction insoluble in p-xylene at 25 0C (XCU fraction), said heterophasic polypropylene resin being characterised by a strain hardening factor (SHF) of 1.7 to 4.0 when measured at a strain rate of 3.0 s −1 and a Hencky strain of 3.0.

Ethylene-based polymer compositions for use as a blend component in shrinkage film applications

An ethylene-based polymer composition has been discovered and is characterized by a Comonomer Distribution Constant greater than about 45. The new ethylene-based polymer compositions and blends thereof with one or more polymers, such as LDPE, are useful for making many articles, especially including films.

Polymers, Polymer Blends, and Articles Made Therefrom

Polymer compositions including an ethylene-based polymer having a melt index of from about 0.1 g/10 min to about 5.0 g/10 min; a melt index ratio of from about 15 to about 30; a weight average molecular weight (Mw) of from about 20,000 to about 200,000; a molecular weight distribution (Mw/Mn) of from about 2.0 to about 4.5; and a density of from 0.900 to 0.920 g/cm 3 . Films having a thickness of 1 mil show a difference between the maximum seal strength and the minimum seal strength over the ranges of temperatures between 95.0° C. and 140.0° C. of ≦1.00×10 2 grams/cm.

Process for preparing polyethylene blend comprising metallocene produced resins and ziegler-natta produced resins

A process for preparing a homogeneous polyethylene product can include producing a first polyethylene resin in the presence of a metallocene catalyst in a reactor. The first polyethylene resin can have a density of from 0.940 to 0.970 g/cm 3 . The first polyethylene resin can have a Low Molecular Weight (LMW) with an MI 2 of between 2 and 250 g/10 min. The process can include separately producing a second polyethylene resin in the presence of a Ziegler-Natta catalyst in a reactor. The second polyethylene resin can have a High Molecular Weight (HMW) with an MI 2 of between 0.01 and 15 g/10 min. The process can include physically blending together the first polyethylene resin and the second polyethylene resin to produce the homogeneous polyethylene product.

Polypropylene-based resin composition and automobile parts using the same

The present invention provides a polypropylene-based resin composition, which comprises of a) a polypropylene; b) an ethylene 1-octene copolymer in which r 1 r 2 <1 (herein, r 1 =k 11 /k 12 , r 2 =k 22 /k 21 , k 11 is a growth reaction rate constant when ethylene is added to a growth chain in which an end active site is ethylene, k 12 is a growth reaction rate constant when octene is added to a growth chain in which an end active site is ethylene, k 22 is a growth reaction rate constant when octene is added to a growth chain in which an end active site is octene, and k 21 is a growth reaction rate constant when ethylene is added to a growth chain in which an end active site is octene); and c) an inorganic filling agent, and a part for vehicles manufactured by using the same.

Polymer Compositions and Processes for Their Production

Provided herein are polymerization processes and polymer compositions including reactor blends formed by such polymerization processes. The polymerization processes include copolymerization using two metallocene catalyst systems: the first catalyst system capable of producing polymers having 60% or more vinyl terminations, the second catalyst system capable of producing high molecular weight polymers, preferably incorporating at least some of the polymers produced by the first catalyst system into the high molecular weight polymers. The reactor blends formed thereby therefore include first and second copolymer components, which may differ in monomer content and weight-average molecular weight (Mw). Furthermore, the reactor blends may exhibit advantageous rheological properties, at least some of which are consistent with long-chain branching. Preferred reactor blends comprise ethylene-propylene-diene (EPDM) terpolymers. 2. The polymer composition of claim 1 , wherein the one or more C-Cα-olefin monomers are one or both of propylene and butene claim 1 , and further wherein the optional polyenes are selected from the group consisting of 5-ethylidene-2-norbornene (ENB) claim 1 , 5-vinyl-2-norbornene (VNB) claim 1 , 1 claim 1 ,4 claim 1 ,-hexadiene claim 1 , dicyclopentadiene claim 1 , and any combination thereof claim 1 , such that each of the first and second copolymer components each independently comprise content derived from (i) ethylene; (ii) propylene and/or butene claim 1 , and claim 1 , optionally; and (iii) one or more of ENB claim 1 , VNB claim 1 , 1 claim 1 ,4-hexadiene claim 1 , and dicyclopentadiene.3. The polymer composition of claim 2 , wherein each of the first and second copolymer components is an EPDM terpolymer.4. The polymer composition of claim 1 , wherein the copolymerizing takes place in a plurality of polymerization zones comprising at least a first polymerization zone and a second polymerization zone.5. The polymer composition of claim 4 , ...

Polymer Compositions with Improved Rheological Properties

Provided herein are metallocene-catalyzed polymer compositions that exhibit advantageous rheological properties, at least some of which are consistent with long-chain branching, as well as polymerization processes suitable for forming such polymer compositions. The polymer compositions may have both LCB index measured at 125° C. of less than 5; and phase angle δ at complex shear modulus G*=100,000 Pa of less than about 54.5°, as determined at 125° C. The polymer compositions of particular embodiments are reactor blends, preferably of ethylene copolymers (e.g., ethylene-propylene (EP) copolymers and/or ethylene-propylene-diene (EPDM) terpolymers). The reactor blend may include first and second copolymer components, which may differ in monomer content and weight-average molecular weight (Mw). 1. An olefinic polymer composition having both of the following properties:LCB index measured at 125° C. of less than 5; and(ii) phase angle δ at complex shear modulus G*=100,000 Pa of less than about 54.5°, as determined at 125° C.2. The olefinic polymer composition of claim 1 , further having one or both of the following properties:(iii) corrected Mooney Large Relaxation Area (cMLRA) at Mooney Large Viscosity (ML)=80 Mooney Units (mu), such that cMLRA is from about 240 to about 2000 mu*sec, where ML is determined at (1+4@125° C.); and(iv) MLRA/ML ratio greater than R, where R is given as R=9.57(ML)−40.83, where ML is the Mooney Large Viscosity of the polymer composition determined at (1+4@125° C.).3. The olefinic polymer composition of claim 1 , further having one or more of the following properties:(v) shear thinning index (STI) measured at 125° C. greater than 0.950;(vi) relaxation time T (determined at 125° C. using the Cross equation) of greater than 1.4 sec; and(vii) MWD greater than 4.4. The olefinic polymer composition of claim 1 , wherein the olefinic polymer composition comprises units derived from ethylene claim 1 , units derived from a C-Cα-olefin claim 1 , and units ...

Vulcanized Polymer Blends

A heterogeneous vulcanized polymer blend comprising a continuous phase comprising a thermoplastic polypropylene having a crystallinity of at least 30% and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron. The elastomeric copolymer has a crystallinity of less than 20% and is at least partially cross-linked such that no more than about 80 wt % of the elastomeric copolymer is extractable in cyclohexane at 23° C.

Polypropylene-based Resin Composition

The present invention relates to a polypropylene-based resin composition which exhibits mechanical properties such as excellent strength and more improved impact strength, and a molded article comprising the same. The polypropylene-based resin composition comprises: a polypropylene-based resin; and an olefin-based copolymer, and shows two or more elution temperatures at a predetermined temperature range when analyzing the olefin-based copolymer by temperature rising elution fractionation (TREF). 1. A polypropylene-based resin composition comprising: a polypropylene-based resin; and an olefin-based copolymer containing an ethylene repeating unit , and an alpha-olefin-based repeating unit having 4 or more carbon atoms ,wherein the olefin-based copolymer shows a single peak when analyzed by gel permeation chromatography, and shows three elution temperatures, Te1, Te2 and Te3, in a temperature range of −20° C. to 120° C. when analyzed by temperature rising elution fractionation (TREF).2. The polypropylene-based resin composition according to claim 1 , wherein the olefin-based copolymer further satisfies the following requirements (1) to (3):(1) Density measured according to ASTM D-792: 0.850 to 0.910 g/cc,(2) Melt index measured at 190° C. under a load of 2.16 kg: 0.1 to 100 g/10 min, and(3) Molecular weight distribution: 1.5 to 4.0.3. The polypropylene-based resin composition according to claim 1 , wherein when the olefin copolymer is analyzed by TREF claim 1 , Te1 is present at a lower temperature than Te2 and Te2 is present at a lower temperature than Te3 claim 1 , andthe Te1 is −20° C. to 100° C., the Te2 is 0° C. to 120° C., and the Te3 is 20° C. to 120° C.4. The polypropylene-based resin composition according to claim 1 , wherein the olefin-based copolymer has a density measured according to ASTM D-792 of 0.86 to 0.88 g/cc claim 1 , the Te1 is −20° C. to 30° C. claim 1 , the Te2 is 10° C. to 80° C. claim 1 , and the Te3 is 40° C. to 120° C.5. The polypropylene- ...

Hot-melt Adhesives Processable with High Speed Processes

A new hot-melt adhesive formulations having improved processability and that are easily processable even with processes at high speed and in particular with Spraying or Fiberization processes. Said hot-melt adhesive formulations comprise, as their main polymer component, at least one isotactic metallocene butene-1 polymer composition, that has a low viscosity, and that has a substantially bimodal composition, directly obtained during polymerization, in two consecutive and separate reaction steps, where the first polymer (polymer A) of said compositionally bimodal polymer composition is an isotactic butene-1 homopolymer or an isotactic butene-1 copolymer with another olefin, while the second polymer (polymer B) is an isotactic copolymer of butene-1, with another olefin, with a chemical composition obviously different from A, qualitatively and/or quantitatively; said hot-melts further comprising a viscosity modifier that is not solid at room temperature.

Hot-melt adhesive composition

The present invention provides a hot melt adhesive composition comprising (A) an ethylene copolymer obtained by copolymerizing ethylene and α-olefin using a single-site catalyst and (B) a rosin ester, in a hydrolyzate of which a dehydroabietic acid content is 30 wt % or less and an abietic acid content is 10 wt % or less, and in a methylated product of the hydrolyzate of which a content of components having a molecular weight of 320 is equal to or greater than 10 wt % of a total amount of components having a molecular weight of 314 to 320.

Polypropylene composition with improved sealing and thermal properties

The present invention relates to a polypropylene composition comprising comonomer units derived from ethylene in an amount of from 0.5 wt % to 25 wt %, and from at least one C 5-12 alpha-olefin in an amount of from 1.0 mol % to 3.0 mol %, wherein the polypropylene composition has an amount of xylene solubles XS of at least 20 wt %, and the xylene solubles have an amount of ethylene-derived comonomer units of from 4 wt % to 50 wt %.

POLYETHYLENE COMPOSITION AND FILM HAVING RETAINED DART IMPACT

A polyethylene composition comprises a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution M/Mof <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of less than 75,000 and a molecular weight distribution M/Mof <2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 100,000 to 300,000 and a molecular weight distribution M/Mof >2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition has a soluble fraction in a CEF analysis of at least 15 weight percent. Film made from the polyethylene composition may have a machine direction 1% secant modulus of ≥200 MPa (at a film thickness of about 1 mil) and an oxygen transmission rate (OTR) of ≥700 cmper 100 inch(at a film thickness of about 1 mil). Film made from the polyethylene composition retains much of its dart impact performance on downgauging from a thickness of 1 mil to a thickness of 0.75 mil. 1. A polyethylene composition comprising:{'sub': W', 'w', 'n, 'from 15 to 75 wt % of a first polyethylene which is an ethylene copolymer, the first polyethylene having a weight average molecular weight Mof from 70,000 to 250,000, a molecular weight distribution M/Mof <2.3 and from 5 to 100 short chain branches per thousand carbon atoms;'}{'sub': W', 'w', 'n, 'from 5 to 80 wt % of a second polyethylene which is an ethylene copolymer or an ethylene homopolymer, the second polyethylene having a weight average molecular weight Mof less than 75,000, a molecular weight distribution M/Mof <2.3 and from 0 to 20 short chain branches per thousand carbon atoms; and'}{'sub': W', 'w', 'n, 'from 5 to 60 wt % of a third polyethylene which is an ethylene copolymer or an ethylene homopolymer, the third polyethylene having a ...

Polyethylene composition and film

In some embodiments disclosed herein are polyethylene composition including a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of less than 75,000 and a molecular weight distribution Mw/Mn of <2.3, a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of less than 75,000 and a molecular weight distribution Mw/Mn of <2.3, and a fourth polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 100,000 to 250,000 and a molecular weight distribution Mw/Mn of >2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition may have a soluble fraction in a CEF analysis of at least 7.5 weight percent. Film made from the polyethylene composition may have a machine direction 1% secant modulus of ≥200 MPa (at a film thickness of about 1 mil) and an oxygen transmission rate (OTR) of ≥550 cm3 per 100 inch2 (at a film thickness of about 1 mil). Film made from the polyethylene composition retains much of its dart impact performance on downgauging from a thickness of 1 mil to a thickness of 0.75 mil.

Polyethylene composition and film having high stiffness, outstanding sealability and high permeability

A polyethylene composition includes a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 15,000 to 100,000, a molecular weight distribution Mw/Mn of >2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of >2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition has a soluble fraction in a CEF analysis of at least 10 weight percent. Film made from the polyethylene composition may have a machine direction 1% secant modulus of ≥200 MPa (at a film thickness of about 1 mil), a seal initiation temperature (SIT) of ≤90° C. (at a film thickness of about 2 mil), an area of hot tack window (AHTW) of ≥160 Newtons·C° (at a film thickness of about 2 mil) and an oxygen transmission rate (OTR) of ≥600 cm3 per 100 inch2 (at a film thickness of about 1 mil).

Bimodal polypropylene random copolymer

The application provides a bimodal polypropylene random copolymer with good response to nucleating agents, increased crystallization temperature, good mechanical and optical properties, as well as low amounts of extractables and good processability in the sense of high Melt Flow Rate. The present invention further relates to articles made thereof, and the use of the bimodal polypropylene random copolymer for specific applications. It also relates to a process for the preparation of said bimodal polypropylene random copolymer.

Adhesive Compositions and Use Thereof

The invention provides hot melt adhesive with wide service temperature ranges, methods of using the adhesive to bond substrates together, to close/seal cases and cartons and the like, and to articles of manufacture comprising the adhesive. The hot melt adhesive comprises a metallocene catalyzed polyethylene copolymer, less than 10 wt % of a functionalized metallocene catalyzed polyethylene copolymer, greater than 22 wt % of a wax, a tackifier and optionally, additives. 1{'b': '9', '(1) applying the adhesive compositions of claim onto at least a portion of a first substrate at a temperature of 325-400° F.;'}(2) applying a second substrate onto the adhesive composition; and(3) cooling the adhesive compositionthereby forming a bonded article.. A method of forming an article comprising the steps of The present invention relates to hot melt adhesives with wide service temperature ranges, making these adhesives particularly well suited for case and carton sealing applications that are exposed to extreme temperatures.Hot melt adhesives are applied to a substrate while in a molten state and cooled to harden the adhesive layer. The use of hot melt adhesives is widely used in packaging industry to seal containers, e.g. cardboard cases, trays and cartons. Many types of packaging applications require the use of an adhesive that is both heat resistant and cold tolerant. However, conventional hot melt adhesives exhibit strong bond strength at either the high or the low end temperatures, but not both. Polypropylene based systems have been utilized to improve heat resistance, but polypropylenes provide inadequate cold resistance because they become brittle at around 0° C. During transportation and storage, and depending on the season and location, the sealed containers are exposed to temperatures of from about −20° F. to about 140° F. Hence, there is a need for versatile hot melt adhesives with both good heat and cold resistances. The current invention addresses this need.The ...

MASTERBATCH COMPOSITION

A masterbatch composition made from or containing: 1. A masterbatch composition comprising:a propylene homopolymer or copolymer as component (1) containing 0 to 3 wt % of ethylene or one or more C4-C10-α-olefin-derived units; anda propylene-ethylene copolymer as component (2) comprising 25 to 35 wt % of ethylene-derived units,wherein the ratio of component (1) to component (2) is 65 to 85 parts by weight : 15 to 35 parts by weight; andwherein the masterbatch composition has:1) a melt flow rate (230° C., load: 21.18 N) of 5 to 30 g/10 minutes;{'sup': 4', '4, '2) xylene insolubles with an Mw of 10×10to 30×10and an Mw/Mn of 6 to 20 as measured by GPC; and'}3) xylene solubles with an intrinsic viscosity of 5.5 to 9.0 dl/g.2. The masterbatch composition according to claim 1 , wherein the melt flow rate is 5 to 15 g/10 minutes.3. The masterbatch composition according to claim 1 , wherein the xylene insolubles have an Mw/Mn of 7 to 20.4. The masterbatch composition according to comprising 67 to 75 wt % of component (1) and 25 to 33 wt % of component (2).5. The masterbatch composition according to claim 1 , wherein the content of the ethylene-derived units in the propylene-ethylene copolymer as component (2) is 27 to 33 wt %.6. The masterbatch composition according to claim 1 , wherein the xylene solubles have an intrinsic viscosity of 6.0 to 8.0 dl/g.7. The masterbatch composition according to obtained by polymerizing propylene and ethylene using a catalyst comprising:(A) a solid catalyst containing magnesium, titanium, halogen, and an electron donor compound selected from succinate-based compounds;(B) an organoaluminum compound; and(C) an external electron donor compound.8. A polypropylene resin composition obtained by mixing the masterbatch composition according to with a block polypropylene different from the masterbatch composition claim 1 , wherein the block polypropylene containing 5 wt % or more of ethylene.9. An injection-molded article obtained by injection- ...

Ethylene/Alpha-Olefin Copolymer and Method for Preparing the Same

The present invention provides an ethylene/alpha-olefin copolymer having narrow molecular weight distribution together with a low density and an ultra low molecular weight, minimized number of unsaturated functional groups, and particularly a small amount of vinylidene among the unsaturated functional groups to show excellent physical properties, and a method for preparing the same. 2. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the density is 0.85 to 0.89 g/cc claim 1 , measured according to ASTM D-792.3. The ethylene/alpha-olefin copolymer according to claim 1 , wherein a weight average molecular weight is 17 claim 1 ,000 to 40 claim 1 ,000 g/mol.4. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the viscosity is 8 claim 1 ,500 to 35 claim 1 ,000 cP claim 1 , when measured at a temperature of 180° C.5. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the Rvalue according to Mathematical Equation 1 is 0.3 or less.6. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the alpha-olefin comprises one or more selected from the group consisting of propylene claim 1 , 1-butene claim 1 , 1-pentene claim 1 , 4-methyl-1-pentene claim 1 , 1-hexene claim 1 , 1-heptene claim 1 , 1-octene claim 1 , 1-decene claim 1 , 1-undecene claim 1 , 1-dodecene claim 1 , 1-tetradecene claim 1 , 1-hexadecene claim 1 , and 1-eicocene.7. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the alpha-olefin is one or more selected from the group consisting of 1-buene claim 1 , 1-hexene and 1-octene.8. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the alpha-olefin is comprised in an amount of from greater than 0 and 99 mol % or less claim 1 , with respect to a total weight of the copolymer.9. The ethylene/alpha-olefin copolymer according to claim 1 , further satisfying the following conditions v) to vi):v) a number average molecular weight (Mn): 9,000 to 25,000, andvi) Melt index (MI) at ...

Novel bimodal resins having good film processability

A bimodal polyethylene copolymer comprising a lower molecular weight (LMW) component and a higher molecular weight (HMW) component, the copolymer having a z-average molecular weight (M Z ) of from about 1,000 kg/mol to about 2,500 kg/mol, a weight fraction of the LMW component (LMW fr.) of from about 0.60 to 0.85, a ratio of a weight average molecular weight (M W ) of the HMW component (HMW M W ) to a M W of the LMW component (LMW M W ) of from about 14 to about 25, a zero shear viscosity (η 0 ) of from about 5×10 5 Pa-s to about 1×10 7 Pa-s and a HMW M W of from about 800 kg/mol to about 1,500 kg/mol.

ETHYLENE-BASED POLYMER, POLYETHYLENE-BASED RESIN COMPOSITION AND USE THEREOF, CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, OLEFIN POLYMERIZATION CATALYST CONTAINING THE COMPONENT, AND METHOD FOR PRODUCING ETHYLENE-BASED POLYMER BY USING THE CATALYST

An object of the present invention is to provide a polyethylene-based resin composition excellent in the moldability and at the same time, excellent in the balance between impact strength and stiffness as well as in the transparency, and a molded product and a film, which are obtained by the molding of the polyethylene-based resin composition. The polyethylene-based resin composition of the present invention comprises from 41 to 99 wt % of (A) an ethylene-based polymer satisfying specific conditions and from 1 to 59 wt % of (B) an ethylene-based polymer satisfying specific conditions, wherein MFR of the composition as a whole is from 0.05 to 50 g/10 min and the density is from 0.910 to 0.960 g/cm. 114-: (canceled)16. The ethylene-based polymerization catalyst component of claim 15 , comprising at least one catalyst component selected from the group consisting of catalyst component (A-i′) and catalyst component (A-i″).17. The ethylene-based polymerization catalyst component of claim 15 , comprising catalyst component (A-i′).18. The ethylene-based polymerization catalyst component of claim 17 , comprising a metallocene compound represented by formula (1b) and a metallocene compound represented by formula (2b′).19. The ethylene-based polymerization catalyst component of claim 17 , comprising a metallocene compound represented by formula (1b) and a metallocene compound represented by formula (7b).20. The ethylene-based polymerization catalyst component of claim 15 , comprising catalyst component (A-i″).21. A production method of an ethylene-based polymer claim 15 , comprising polymerizing ethylene and claim 15 , optionally claim 15 , one or more α-olefins claim 15 , in the presence of the ethylene-based polymerization catalyst component of .22. An ethylene-based polymer produced by the production method of .25. The ethylene-based polymer polymerization catalyst component of claim 20 , comprising a metallocene compound represented by formula (4b) and a metallocene ...

CAPS AND CLOSURES

This disclosure relates to caps and closures manufactured from an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Y) greater than 0; total catalytic metal≧3.0 ppm; ≧0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (X) greater than 0. The ethylene interpolymer products have a melt index from about 0.4 to about 20 dg/minute, a density from about 0.948 to about 0.968 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 54% to about 98%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation. 1108-. (canceled)109. A cap or a closure comprising at least one layer comprising an ethylene interpolymer product comprising:(I) a first ethylene interpolymer;(II) a second ethylene interpolymer, and;(III) optionally a third ethylene interpolymer; {'br': None, 'sup': 'A', 'sub': a', 'b', 'n, '(L)M(Pl)(Q)'}, 'wherein said first ethylene interpolymer is produced using a single site catalyst formulation comprising a component (i) defined by the formula'}{'sup': 'A', 'wherein Lis selected from the group consisting of unsubstituted cyclopentadienyl, substituted cyclopentadienyl, unsubstituted indenyl, substituted indenyl, unsubstituted fluorenyl and substituted fluorenyl;'}M is a metal selected from the group consisting of titanium, hafnium and zirconium;Pl is a phosphinimine ligand;{'sub': 1-10', '1-10', '5-10', '1-18', '1-8', '6-10', '1-8', '1-8, 'Q is independently selected from the group consisting of a hydrogen atom, a halogen atom, a Chydrocarbyl radical, a Calkoxy radical and a Caryl oxide radical; wherein each of said hydrocarbyl, alkoxy, and aryl oxide radicals may be unsubstituted or further ...

HDPE ARTICLES

This disclosure relates to manufactured articles containing ethylene interpolymers. Specifically, films, containers and lids comprising at least one layer of an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Y) greater than 0; total catalytic metal ≧3.0 ppm; ≧0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (X) greater than 0. The ethylene interpolymer products have a melt index from about 0.4 to about 100 dg/minute, a density from about 0.950 to about 0.970 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 55% to about 97%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation. 1111-. (canceled)112. A manufactured article comprising at least one layer comprising an ethylene interpolymer product comprising:(I) a first ethylene interpolymer;(II) a second ethylene interpolymer, and;(III) optionally a third ethylene interpolymer; {'br': None, 'sup': 'A', 'sub': a', 'b', 'n, '(L)M(Pl)(Q)'}, 'wherein said first ethylene interpolymer is produced using a single site catalyst formulation comprising a component (i) defined by the formula'}wherein LA is selected from the group consisting of unsubstituted cyclopentadienyl, substituted cyclopentadienyl, unsubstituted indenyl, substituted indenyl, unsubstituted fluorenyl and substituted fluorenyl;M is a metal selected from the group consisting of titanium, hafnium and zirconium;Pl is a phosphinimine ligand;{'sub': 1-10', '1-10', '5-10', '1-18', '1-8', '6-10', '1-8', '1-8, 'Q is independently selected from the group consisting of a hydrogen atom, a halogen atom, a Chydrocarbyl radical, a Calkoxy radical and a Caryl oxide radical; wherein each ...

HETEROPHASIC POLYPROPYLENE COMPOSITION

The invention relates to a new soft heterophasic propylene copolymer with increased melting temperature, improved stiffness and optical properties, as well as the process by which the heterophasic propylene copolymer is produced. Further the present invention is directed to articles made of the inventive heterophasic propylene copolymer, particularly to blow moulded, extrusion blow moulded or injection moulded articles and their use in e.g. medical, pharmaceutical or alimentary applications. 1. A heterophasic polypropylene composition comprising:a. a crystalline matrix being a multimodal propylene random copolymer of ethylene and/or C4-C12 alpha-olefin(s) as further comonomers andb. an amorphous propylene-ethylene elastomer optionally comprising of C4-C12 alpha-olefin(s) as further comonomers dispersed in said crystalline matrix (a), i. a xylene cold solubles (XCS) fraction according to ISO 1652 in the range of 5.0 to 16.5 wt. %,', 'ii. an comonomer content of the XCS fraction (Co(XCS)) in the range of 8.0 to 16.5 wt. %,', {'br': None, 'i': 'Co', '0.80≤XCS/(XCS)≤1.20,'}, 'iii. and optionally fulfilling the inequation'}], 'wherein the heterophasic polypropylene composition is characterised by'}wherein XCS denominates the xylene cold solubles fraction according to ISO 1652 in [wt. %] and Co(XCS) is the comonomer content of said XCS fraction in [wt. %].2. The heterophasic polypropylene composition according to comprising:a. 80.0-90.0 wt. % of a crystalline matrix being a multimodal propylene random copolymer of ethylene and/or C4-C12 alpha-olefin(s) as further comonomers andb. 10.0-20.0 wt. % of an amorphous propylene-ethylene elastomer optionally comprising of C4-C12 alpha-olefin(s) as further comonomers dispersed in said crystalline matrix (a).3. The heterophasic propylene composition according to claim 2 , wherein the multimodal propylene random copolymer of ethylene and or alpha-olefins (a) comprises:a1) 30.0-50.0 wt. %, based on the total weight of the ...

POLYPROPYLENE IMPACT COPOLYMERS WITH REDUCED EMISSION OF VOLATILES

The invention provides polypropylene impact copolymer compositions with reduced emissions of volatiles for the automotive industry, particularly for interior applications in the automotive industry. 1. A polypropylene impact copolymer composition (PIC) with reduced emission of volatiles , comprising:i) a Ziegler-Natta-prepared heterophasic polypropylene copolymer (HeCoPP) having an ethylene-propylene rubber content of between 15% and 40%, in an amount of from 40% to 70%;ii) a metallocene-prepared polypropylene homopolymer (m-PPH), in an amount of from about 30% to 59%; andii) a chain length modifier (CLM) in an amount of from 0.01 to 1%;said three components being mixed in molten state, resulting in visbreaking said HeCoPP and m-PPH, wherein said emission of volatiles is at most 200 ppm when measured as VOC content according to VDA278 standard.2. (canceled)3. The PIC of claim 1 , consisting of a polymer component comprising 40-70% HeCoPP claim 1 , 30-59% of m-PPH claim 1 , up to 1% of CLM claim 1 , and additives.4. The PIC of claim 1 , wherein said CLM comprises at least one peroxide.5. The PIC of claim 1 , wherein said CLM comprises at least one nitroxide.6. The PIC of claim 3 , wherein said additives are selected from fillers claim 3 , elastomers claim 3 , antioxidants claim 3 , UV stabilizers claim 3 , metal deactivators claim 3 , colorants claim 3 , nucleating agents claim 3 , antistatic and mold release agents claim 3 , and additional chain length modifiers.7. The PIC of claim 1 , exhibiting FOG content according to VDA278 standard of at most 500 ppm.8. The PIC of claim 1 , exhibiting MFR greater than 40 dg/min.9. A process for manufacturing a polypropylene impact copolymer composition (PIC) with reduced emission of volatiles claim 1 , comprising steps of:i) providing a Ziegler-Natta-prepared heterophasic polypropylene copolymer (HeCoPP) having an ethylene-propylene rubber content of between 15% and 40%;ii) providing a metallocene-prepared polypropylene ...

Propylene-alpha Olefin Copolymers and Methods for Making the Same

Provided is a composition having 60 wt % to 95 wt % of a first propylene alpha-olefin copolymer component having a reactivity ratio product of less than 0.75 and a weight average molecular weight of greater than about 450,000 g/mol; and 5 wt % to 40 wt % of a second propylene alpha-olefin copolymer component having a reactivity ratio of greater than 1.5 and a weight average molecular weight of less than about 215,000 g/mol.

Metallocene-Catalyzed Polyethylene

A metallocene-catalyzed polyethylene resin having a multimodal molecular weight and composition distribution, comprising from 45% by weight to 75% by weight of a low density fraction, said fraction having a density below or equal to 918 g/cm 3 as measured following the method of standard test ISO 1183 at a temperature of 23° C., wherein the density of the polyethylene resin is from 0.920 to 0.945 g/cm 3 , wherein the M w /M n of the polyethylene is of from 2.8 to 6, wherein the melt index MI2 of the polyethylene resin of from 0.1 to 5 g/10 min measured following the method of standard test ISO 1133 Condition D at a temperature of 190° C. and under a load of 2.16 kg; and wherein the composition distribution breadth index (CDBI) of the polyethylene resin is below 70%, as analyzed by quench TREF (temperature rising elution fractionation) analysis.

CURABLE COMPOSITIONS COMPRISING UNSATURATED POLYOLEFINS

Disclosed relates to unsaturated polyolefins and processes for preparing the same. Disclosed further relates to curable formulations comprising the unsaturated polyolefins that show improved crosslinking. 1. A curable composition for an encapsulant film , the curable composition comprising (A) a polyolefin component comprising an unsaturated polyolefin of the formula ALand (B) a curing component comprising a cross-linking agent , a coagent , and a silane coupling agent , wherein:{'sup': '1', '#text': 'Lis a polyolefin;'}{'sup': ['1', '1', '1', '1', '1', '1', '1', '1', '1'], 'sub': ['2', '2', '2', '2'], '#text': 'Ais selected from the group consisting of a vinyl group, a vinylidene group of the formula CH═C(Y)—, a vinylene group of the formula YCH═CH—, a mixture of a vinyl group and a vinylene group of the formula YCH═CH—, a mixture of a vinyl group and a vinylidene group of the formula CH═C(Y)—, a mixture of a vinylidene group of the formula CH═C(Y)— and a vinylene group of the formula YCH═CH—, and a mixture of a vinyl group, a vinylidene group of the formula CH═C(Y)—, and a vinylene group of the formula YCH═CH—; and'}{'sup': '1', 'sub': ['1', '30'], '#text': 'Yat each occurrence independently is a Cto Chydrocarbyl group.'}2. A curable composition for an encapsulant film , the curable composition comprising (A) a polyolefin component comprising a telechelic polyolefin of the formula ALLAand (B) a curing component comprising a cross-linking agent , a coagent , and a silane coupling agent , wherein:{'sup': '1', '#text': 'Lis a polyolefin;'}{'sup': ['1', '1', '1', '1', '1', '1', '1', '1', '1'], 'sub': ['2', '2', '2', '2'], '#text': 'Ais selected from the group consisting of a vinyl group, a vinylidene group of the formula CH═C(Y)—, a vinylene group of the formula YCH═CH—, a mixture of a vinyl group and a vinylene group of the formula YCH═CH—, a mixture of a vinyl group and a vinylidene group of the formula CH═C(Y)—, a mixture of a vinylidene group of the formula CH═C(Y ...

Method For Preparing Polyolefin Using Supported Hybrid Metallocene Catalyst

The present disclosure relates to a method for preparing a polyolefin using a supported hybrid metallocene catalyst. According to the present disclosure, a polyolefin having a narrow molecular weight distribution can be prepared very effectively by introducing a cocatalyst in an optimum conent in the presence of a supported hybrid metallocene catalyst containing two or more metallocene compounds having a specific chemical structure. The polyolefin prepared according to the present disclosure exhibits excellent uniformity in chlorine distribution in polyolefin during chlorination, thereby significantly improving elongation of the chlorinated polyolefin, compatibility with PVC and impact reinforcing performance. Thus, it exhibits excellent chemical resistance, weather resistance, flame retardancy, processability and impact strength reinforcing effect, and can be suitably applied as an impact reinforcing agent for PVC pipes and window profiles.

Multimodal polyethylene pipe

The present invention relates to a reactor system for a multimodal polyethylene polymerization process, comprising; (a) first reactor; (b) a hydrogen removal unit arranged between the first reactor and a second reactor comprising at least one vessel connected with a depressurization equipment, preferably selected, from vacuum pump, compressor, blower, ejector or a combination thereof, the depressurization equipment allowing to adjust an operating pressure to a pressure in a range of 100-200 kPa (abs); (c) the second reactor; and (d) a third reactor and use thereof as a pipe.

Means For Increasing the Molecular Weight and Decreasing the Density of Ethylene Interpolymers Employing Mixed Homogeneous Catalyst Formulations

A continuous solution polymerization process is disclosed wherein at least two homogeneous catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a second homogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to the third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to the third homogeneous catalyst formulation. 135-. (canceled)37. The process according to further comprising:a) adding a catalyst deactivator A to the second exit stream, downstream of the second reactor, forming a deactivated solution A; or adding a catalyst deactivator B to the third exit stream, downstream of the third reactor, forming a deactivated solution B;b) phase separating deactivated solution A or deactivated solution B to recover the ethylene interpolymer product.38. The process according to claim 37 , further comprising:c) adding a passivator to deactivated solution A or deactivated solution B forming a passivated solution, with the proviso that step c) omitted if the heterogeneous catalyst formulation is not added to the third reactor, andd) phase separating said-deactivated solution A or deactivated solution B, or the passivated solution, to recover the ethylene interpolymer product.40. The process according to claim 39 , having the following molar ratios in the first reactor:{'sup': 'A', 'component Bto ...

Methods for Making Polyolefin Polymer Compositions

A method for increasing the melt strength of a polyolefin polymer composition is provided. The method includes mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b) or from at least one olefin polymerization catalyst (c), and obtaining the polyolefin polymer composition. 1. A method for increasing the melt strength of a polyolefin polymer composition , the method comprising:mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b), andobtaining the polyolefin polymer composition.2. The method of claim 1 , wherein the polyolefin polymer composition has a melt strength 10% or greater than the melt strength of the first polyolefin composition or the second polyolefin composition.3. The method of claim 1 , wherein the polyolefin polymer composition has a melt strength 20% or greater than the melt strength of the first polyolefin composition or the second polyolefin composition.4. (canceled)5. The method of claim 1 , wherein the polyolefin polymer composition has a melt strength of 10 cN or greater.6. The method of claim 1 , wherein the polyolefin polymer composition has a melt strength of 11 cN or greater.7. (canceled)8. The method of claim 1 , wherein the at least one olefin polymerization catalyst (a) comprises a metallocene catalyst.10. The method of claim 8 , wherein the metallocene catalyst comprises bis(cyclopentadienyl)zirconium dichloride claim 8 , bis(n-butylcyclopentadienyl)zirconium dichloride claim 8 , bis(n-butylcyclopentadienyl)zirconium dimethyl claim 8 , bis(pentamethylcyclopentadienyl)zirconium dichloride claim 8 , bis(pentamethylcyclopentadienyl)zirconium dimethyl ...

MULTI-LAYERED FILMS ORIENTED IN THE MACHINE DIRECTION AND ARTICLES COMPRISING THE SAME

The present invention provides uniaxially oriented films and packages formed from such films. In one aspect, a uniaxially oriented film comprises (a) a first layer comprising (i) a first composition comprising an ethylene-based polymer prepared in the presence of a single-site catalyst, wherein the first composition has a density of 0.935 g/cmto 0.965 g/cm, a melt index (I) of 0.5 to 6 g/10 minutes, and a MWD of 6.0 or less, and (ii) a Ziegler-Natta catalyzed ultra low density polyethylene having a density of 0.880 g/cmto 0.912 g/cm, a melt index (I) of 0.5 to 6 g/10 minutes, and a MWD of 6.0 or less, (b) a second layer comprising at least one polyolefin, and (c) at least one inner layer between the first layer and the second layer comprising a high density polyethylene. The film is oriented in the machine direction at a draw ratio of between 4:1 and 10:1, and can exhibit a machine direction 2% secant modulus of 85,000 psi or more when measured as per ASTM D882. 2. The uniaxially oriented film of claim 1 , wherein each C layer comprises 100% by weight of the Ziegler-Natta catalyzed ultra low density polyethylene.3. The uniaxially oriented film of claim 1 , wherein the ultra low density polyethylene in the first layer has a peak melting point of 100° C. or more and a VICAT softening point of 100° C. or less.4. A food package comprising the uniaxially oriented film of . The present invention relates to uniaxially oriented, multi-layered films and in particular, to multi-layered films oriented in the machine direction. Such films can be particularly useful in articles such as flexible packaging.Polyethylene films are widely used in flexible packaging, such as heavy duty shipping sacks, stand-up pouches, detergent pouches, sachets, etc. Depending on the application, a variety of properties may be needed in terms of integrity and/or attractiveness. Such properties can include: (1) excellent optical properties, such as high gloss, high clarity and low haze; (2) sufficient ...

HETEROPHASIC PROPYLENE COPOLYMER WITH HIGH MELTING POINT

Heterophasic propylene copolymer for retortability, said copolymer has a comonomer content in the range of 1.5 to 14.0 mol-%; a melting temperature in the range of 140 to 15° C. and a xylene cold soluble (XCS) fraction in the range of 10.0 to below 30.0 wt.-%. 2. Heterophasic propylene copolymer (RAHECO) comprising:(i) a matrix (M) being a propylene copolymer (R-PP); and(ii) an elastomeric propylene copolymer (EC) dispersed in said matrix (M),said heterophasic propylene copolymer (RAHECO) has(a) a comonomer content in the range of 1.5 to 14.0 mol %;(b) a melting temperature determined by differential scanning calorimetry (DSC) in the range of 140 to 155° C.;(c) a xylene cold soluble (XCS) fraction determined according to ISO 16152 (25° C.) in the range of 10.0 to equal or below 30.0 wt. %,wherein said propylene copolymer (R-PP) comprises a first polypropylene fraction (PP1) and a second propylene copolymer fraction (R-PP2), the comonomer content in the first polypropylene fraction (PP1) is at most 2.5 mol. %.3. Heterophasic propylene copolymer (RAHECO) according to claim 2 , wherein:(a) the comonomer content [in mol %] in the propylene copolymer (R-PP) is higher than in the first polypropylene fraction (PP1); and/or(b) the weight ratio between the first polypropylene fraction (PP1) and the second propylene copolymer fraction (R-PP2) [(PP1)/(R-PP2)] is in the range of 10:90 to 60:40.4. Heterophasic propylene copolymer (RAHECO) according to claim 2 , wherein:(a) the comonomer content between a first polypropylene fraction (PP1) and the propylene copolymer (R-PP) differ by at least 1.5 mol %; and/or(b) the comonomer content between the first polypropylene fraction (PP1) and the second propylene copolymer fraction (R-PP2) differ by at least 3.0 mol %.5. Heterophasic propylene copolymer (RAHECO) according to claim 2 , wherein:(a) the first polypropylene fraction (PP1) is a propylene homopolymer; and/or(b) the second propylene copolymer fraction (R-PP2) has a comonomer ...

RUBBER COMPOSITION FOR FUEL-CELL COOLING HOSE AND FUEL-CELL COOLING HOSE USING SAME

A rubber composition for a fuel-cell cooling hose may include: a base resin including an ethylene-propylene-diene monomer (EPDM); a reinforcing agent; an activating agent; a plasticizer; and a crosslinking agent. 1. A rubber composition for a fuel-cell cooling hose , the rubber composition comprising:40 to 62 wt % of a base resin comprising an ethylene-propylene-diene monomer (EPDM);30 to 52 wt % of a reinforcing agent;2 to 4 wt % of an activating agent;2 to 3 wt % of a plasticizer; and1 to 2 wt % of a crosslinking agent.2. The rubber composition of claim 1 , wherein the base resin comprises at least one material selected from a group consisting of a metallocene-based EPDM claim 1 , a Ziegler-Matta-based EPDM claim 1 , and combinations thereof.3. The rubber composition of claim 2 , wherein the base resin comprises: the metallocene-based EPDM claim 2 , orthe metallocene-based EPDM and the Ziegler-Matta-based EPDM at a weight ratio of 1:0.3-2.5.4. The rubber composition of claim 1 , wherein the reinforcing agent comprises at least one material selected from a group consisting of carbon black claim 1 , silica claim 1 , calcium carbonate claim 1 , and combinations thereof.5. The rubber composition of claim 4 , wherein the carbon black has a dibutylphthalate (DBP) oil absorption rate of 40 to 150 ml/100 g and an iodine adsorption number I2 of 10 to 50 mg/g.6. The rubber composition of claim 1 , wherein the activating agent comprises:0.5 to 1 wt % of zinc oxide (ZnO);0.5 to 1 wt % of a thermoplastic olefin (TPO); and1 to 2 wt % of steric acid.7. The rubber composition of claim 6 , wherein a weight ratio of the zinc oxide (ZnO) to the thermoplastic olefin (TPO) is 1:1-2.8. The rubber composition of claim 6 , wherein the thermoplastic olefin (TPO) has a specific gravity of 0.85 to 0.9 g/cmand a melt index (MI) of 0.3 to 0.7 g/10 min (190° C./2.16 kg).9. The rubber composition of claim 1 , wherein the plasticizer comprises at least one substance selected from a group ...

Bimodal polyethylene

Provided are various bimodal polyethylene, including but not limited to a bimodal polyethylene for a pipe having a density of from 0.9340 to 0.9470 gram/cubic centimeters (g/ccm), a melt index (12) of from 0.1 to 0.7 gram/10 minute, a melt flow ratio (121/12) of from 20 to 90. The bimodal polyethylene includes a high molecular weight polyethylene component and a low molecular weight polyethylene component which are a reaction product of a polymerization process performed in a single reactor and that employs a bimodal polymerization catalyst system. The bimodal polymerization catalyst system includes a bimodal catalyst system of bis(2-pentamethylphenylamido)ethyl)amine Zirconium dibenzyl and either (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloride or (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dimethyl in a 3.0:1 molar ratio; and a trim catalyst of (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloridedimethyl in heptane added to adjust melt flow ratio of the bimodal polyethylene.

SEMICONDUCTIVE POLYETHYLENE COMPOSITION

The invention relates semiconductive polyethylene composition, for use in power cables, with improved smoothness compared to other available semiconductive polymer compositions. This invention relates to a cable with a layer comprising the semiconductive polyethylene composition. 1. A semiconductive polyethylene composition for a cable comprising:{'sup': '3', 'a. a very low density polyolefin, having a density of less than or equal to 910 kg/m,'}b. an amount of at least 20 wt % of carbon black,wherein a gel count in the polyolefin, as defined in “Test methods”, for gels above 1000 μm is below 100 gels/kg.2. The semiconductive polyethylene composition according to comprising the very low density polyolefin wherein the gel count in the polyolefin claim 1 , as defined in “Test methods” claim 1 , for gels above 600 μm is below 500 gels/kg.3. The semiconductive polyethylene composition according to comprising the very low density polyolefin wherein the gel count in the polyolefin claim 1 , as defined in “Test methods” claim 1 , for gels above 300 μm is below 2000 gels/kg.4. The semiconductive polyethylene composition according to claim 1 , wherein the very low density polyolefin has a MFR(190° C. and 2.16 kg) in the range of 5 to 25 g/10 min.5. The semiconductive polyethylene composition according to claim 1 , wherein the very low density polyolefin comprise at least two fractions.7. The semiconductive polyethylene composition according to claim 1 , wherein the semiconductive polyethylene composition comprises an ethylene polar copolymer.8. The semiconductive polyethylene composition according to claim 7 , wherein the ratio of the MFR(190° C. and 2.16 kg) of the very low density polyolefin and the ethylene polar copolymer is from 0.5 to 4.9. The semiconductive polyethylene composition according to claim 7 , wherein the MFR(190° C. and 2.16 kg) of the very low density polyolefin and the ethylene polar copolymer differ less than 15 g/10 min.10. The semiconductive ...

Polypropylene-based Resin Composition

The present invention relates to a polypropylene-based resin composition which exhibits mechanical properties such as excellent strength, etc. and has an improved impact strength, and to a molded article including the same. The olefin-based copolymer includes: a polypropylene-based resin; and an olefin-based copolymer, wherein the olefin-based copolymer includes polymeric fractions defined by three different peaks at a given temperature when analyzed by cross-fractionation chromatography (CFC). 1. A polypropylene-based resin composition comprising: a polypropylene-based resin; and an olefin-based copolymer containing an ethylene repeating unit and an alpha-olefin-based repeating unit ,wherein when the olefin-based copolymer is analyzed by cross-fractionation chromatography (CFC), it includesa first fraction defined as a first peak appearing at a first elution temperature (Te1) of −20° C. to 50° C.,a second fraction defined as a second peak appearing at a second elution temperature (Te2) of 50° C. to 85° C., anda third fraction defined as a third peak appearing at a third elution temperature (Te3) of 85° C. to 130° C.,and wherein the fraction ratio of the second fraction defined by the integral area of the second peak is 7 to 25%.2. The polypropylene-based resin composition according to claim 1 , wherein the central peak temperature of the second peak of the olefin-based copolymer is 50° C. to 85° C.3. The polypropylene-based resin composition according to claim 1 , wherein the central peak temperature of the first peak of the olefin-based copolymer is −15° C. to 15° C. claim 1 , and the fraction ratio of the first fraction defined by the integral area of the first peak is 50 to 75%.4. The polypropylene-based resin composition according to claim 1 , wherein the central peak temperature of the third peak of the olefin-based copolymer is 85° C. to 100° C. claim 1 , and the fraction ratio of the third fraction defined by the integral area of the third peak is 5 to 25%.5 ...

Polyethylene Having High Pressure Resistance and Crosslinked Polyethylene Pipe Comprising the Same

The present disclosure relates to a polyethylene having high pressure resistance and a crosslinked polyethylene pipe including the same. The polyethylene according to the present disclosure has high melt index and density and exhibits a sufficient degree of crosslinking, thereby exhibiting excellent strength and pressure resistance characteristics.

POLYETHYLENE COMPOSITION

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same. 16.-. (canceled)7. A method of making a bimodal linear low density polyethylene composition , the method comprising contacting ethylene (monomer) and at least one (C-C)alpha-olefin (comonomer) with a mixture of a bimodal catalyst system and a trim solution in the presence of molecular hydrogen gas (H) and an inert condensing agent (ICA) in one , two or more polymerization reactors under (co)polymerizing conditions , thereby making the bimodal linear low density polyethylene composition; wherein prior to being mixed together the trim solution consists essentially of a (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium complex and an inert liquid solvent and the bimodal catalyst system consists essentially of an activator species , a non-metallocene ligand-Group 4 metal complex and a metallocene ligand-Group 4 metal complex , all disposed on a solid support; and wherein the (co)polymerizing conditions comprise a reaction temperature from 80 degrees (°) to 110° Celsius (C.); a molar ratio of the molecular hydrogen gas to the ethylene (H2/C2 molar ratio) from 0.001 to 0.050; and a molar ratio of the comonomer to the ethylene (Comonomer/C2 molar ratio) from 0.005 to 0.10.8. The method of further described by any one of limitations (i) to (vi): (i) wherein the bimodal catalyst system consists essentially of a bis(2-pentamethylphenylamido)ethyl)amine zirconium complex and (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium complex claim 7 , in a molar ratio thereof from 1.0:1.0 to 5.0:1.0 claim 7 , respectively claim 7 , and a methylaluminoxane species claim 7 , all disposed by spray-drying onto the solid support; (ii) wherein the bimodal catalyst system further consists essentially of mineral oil and the solid support is a hydrophobic fumed silica; (iii) wherein the mixture is a suspension of the bimodal catalyst ...

Propylene resin composition, shaped article and propylene polymer

A propylene resin composition includes a propylene polymer (A) satisfying requirements (1) to (3) below: (1) having a number average molecular weight (Mn) measured by gel permeation chromatography (GPC) of 5000 to 22000; (2) having a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) measured by gel permeation chromatography (GPC) being 1.2 to 3.5; and (3) having a proportion of a component eluted at a temperature of not more than −20° C. in temperature rising elution fractionation (TREF) being not more than 3.5 mass %.

C2C3 Random Copolymer

New CCrandom copolymers, which combine low sealing initiation temperature (SIT), high hot-tack, low C6-solubles, good optical properties and an improved stiffness/impact balance, which are particularly suited for preparing blown films. The present invention is furthermore related to the manufacture of said copolymers and to their use, as well as to the blown films comprising such CCrandom copolymers. 1. A CCrandom copolymer (A) consisting of (i) an ethylene content in the range of from 2.0 to less than 5.5 wt % and', {'sub': '2', '(ii) a melt flow rate MFR(230° C./2.16 kg) measured according to ISO 1133 in the range of from 0.5 to 5.0 g/10 min and'}], '50.0 to 85.0 wt % of polymer fraction (A-1) having'} (i) an ethylene content in the range of from 5.5 to 10.0 wt % and', {'sub': '2', '(ii) a melt flow rate MFR(230° C./2.16 kg) measured according to ISO 1133 in the range of from 0.1 to 3.0 g/10 min,'}], '15.0 to 50.0 wt % of polymer fraction (A-2) having'}{'sub': 2', '2, 'wherein the melt flow rate MFR(230° C./2.16 kg) of polymer fraction (A-2) is lower than the MFR(230° C./2.16 kg) of polymer fraction (A-1), and'}{'sub': 2', '3, 'wherein the CCrandom copolymer has'}(a) a total ethylene content in the range of from 3.0 to 7.5 wt %;(b) a melt flow rate MFR2 (230° C./2.16 kg) measured according to ISO 1133 in the range of from 0.5 to 5.0 g/10 min and(c) a melting temperature Tm as determined by DSC according to ISO 11357 of from 110° C. to 135° C.2. The CCrandom copolymer according to claim 1 , wherein the CCrandom copolymer (A) has an amount of hexane solubles (C6 solubles claim 1 , FDA) measured on a 100 μm thick blown film according to FDA 177.1520 in the range of from 0.1 to 2.0 wt %.3. The CCrandom copolymer composition according to claim 1 , wherein the CCrandom copolymer (A) is obtained in the presence of a metallocene catalyst.5. The process according to claim 4 , wherein as cocatalyst (ii) a cocatalyst system comprising a boron containing cocatalyst and an ...

Polyethylene blend compositions and film

A polymer blend comprising first and second polyethylene copolymers is presented which has good processability, and which when made into film shows good toughness-stiffness balance, reasonable MD tear, as well as good optical properties.

BLENDS OF LINEAR LOW DENSITY POLYETHYLENES

A polyethylene blend comprising a uniform dispersion of constituents (A) and (B): (A) a Ziegler-Natta catalyst-made linear low density polyethylene and (B) a metallocene catalyst-made linear low density polyethylene, a composition comprising the polyethylene blend and at least one additive, methods of making and using same, and manufactured articles and films comprising or made from same. 1. A polyethylene blend comprising a uniform dispersion of constituents (A) and (B): (A) a Ziegler-Natta catalyst-made linear low density polyethylene (ZN-LLDPE) and (B) a metallocene catalyst-made linear low density polyethylene (MCN-LLDPE); wherein the (A) ZN-LLDPE is from 11 to 79 weight percent (wt %) of the total weight of (A) and (B) and the (B) MCN-LLDPE is from 89 to 21 wt % of the total weight of (A) and (B); wherein by itself (A) is independently characterized by properties (i) to (iii): (i) a melt index (“I” , 190° C. , 2.16 kg) of 0.5 to 2.5 gram per 10 minutes (g/10 min.) measured according to ASTM D1238-04; (ii) a density from 0.905 to 0.930 gram per cubic centimeter (g/cm) , measured according to ASTM D792-13; and (iii) no detectable amount of long chain branching per 1 ,000 carbon atoms (“LCB Index”) , measured according to LCB Test Method; and wherein by itself (B) is independently characterized by properties (i) to (iii): (i) a melt index (“I” , 190° C. , 2.16 kg) of 0.5 to 2.5 g/10 min. measured according to ASTM D1238-04; (ii) a density from 0.905 to 0.930 g/cm , measured according to ASTM D792-13; and (iii) no detectable amount of long chain branching per 1 ,000 carbon atoms (“LCB Index”) , measured according to LCB Test Method; and with the proviso that the density of constituent (B) is within ±0.003 g/cmof the density of constituent (A); wherein the (A) ZN-LLDPE is made by copolymerizing ethylene and 1-butene in the presence of the Ziegler-Natta catalyst and the (B) MCN-LLDPE is made by copolymerizing ethylene and 1-butene in the presence of the metallocene ...

METHODS AND SYSTEMS FOR OLEFIN POLYMERIZATION

Methods and systems for olefin polymerization are provided. The method for olefin polymerization can include flowing a catalyst through an injection nozzle and into a fluidized bed disposed within a reactor. The method can also include flowing a feed comprising one or more monomers, one or more inert fluids, or a combination thereof through the injection nozzle and into the fluidized bed. The feed can be at a temperature greater than ambient temperature. The method can also include contacting one or more olefins with the catalyst within the fluidized bed at conditions sufficient to produce a polyolefin. 1. A method for controlling polymer morphology in olefin polymerization , comprising:flowing a catalyst through a first concentric flow path of an injection nozzle having two or more concentric flow paths and into a fluidized bed disposed within a reactor;flowing a feed comprising one or more monomers, one or more inert fluids, or a combination thereof through a second concentric flow path of the injection nozzle and into the fluidized bed, i) the temperature of the second concentric flow path or', 'ii) the flow rate of the feed through the second concentric flow path; and, 'controlling one or more ofcontacting one or more olefins with the catalyst within the fluidized bed at conditions sufficient to produce a polyolefin.2. The method of claim 1 , wherein the feed is at a temperature of about −35° C. to about 110° C.3. The method of claim 1 , wherein the feed is at a temperature of about 70° C. to about 100° C.4. The method of claim 1 , wherein the feed is at a temperature of about 93° C. to about 110° C.5. The method of claim 1 , wherein the feed is at a temperature within about 140° C. of the temperature of the fluidized bed.6. The method of claim 1 , wherein flowing the feed through the second concentric flow path and into the fluidized bed increases an amount of fines within the fluidized bed by at least 5 wt. % as compared to flowing the feed through the second ...

POLYMER COMPOSITION FOR ADHESIVE APPLICATION

The present invention relates to an ethylene polymer composition for use in adhesive applications, to an article comprising the ethylene polymer composition and to a process for producing said article. 1. An ethylene polymer composition for adhesive applications which comprises a polymer blend of (a1) a copolymer of ethylene with silane group(s) containing comonomer; or', {'sub': 1', '6', '1', '6', '1', '6, '(a2) a copolymer of ethylene with one or more polar comonomer(s) selected from (C-C)-alkyl acrylate or (C-C)-alkyl (C-C)-alkylacrylate comonomer(s), which copolymer (a2) bears silane group(s) containing units and which copolymer (a2) is different from the copolymer (a1); and'}], '(a) a copolymer of ethylene which is selected from'}(b) an ethylene polymer which is different from copolymer (a1) and copolymer (a2);and which polymer composition further comprises(c) additive(s); andone or more, or all, of the components (d) to (g), in any combination:(d) a tackifying resin;(e) a plasticizer;(f) a further component(s) other than components (d), (e) and (g); and/or(g) a crosslinking agent;wherein the components (d) to (g) are different from the components (a) to (c).2. The polymer composition according to which comprises a polymer blend of (a1) a copolymer of ethylene with silane group(s) containing comonomer; or', {'sub': 1', '6', '1', '6', '1', '6, '(a2) a copolymer of ethylene with one or more polar comonomer(s) selected from (C-C)-alkyl acrylate or (C-C)-alkyl (C-C)-alkylacrylate comonomer(s), which copolymer (a2) bears silane group(s) containing units and which copolymer (a2) is different from the copolymer (a1); and'}], '(a) a copolymer of ethylene which is selected from'}(b) an ethylene polymer which is different from copolymer (a1) and copolymer (a2);and which polymer composition further comprises(c) additive(s); andone or more, or all, of the components (d) to (g), in any combination:(d) a tackifying resin;(e) a plasticizer;(f) a further component(s) other ...

Dilution index

This disclosure relates to ethylene interpolymer compositions. Specifically, ethylene interpolymer products having: a Dilution Index (Y d ) greater than 0; total catalytic metal≧3.0 ppm; ≧0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (X d ) greater than 0. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.869 to about 0.975 g/cm 3 , a polydispersity (M w /M n ) from about 2 to about 25 and a CDBI 50 from about 20% to about 97%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation.

SOLUTION POLYMERIZATION PROCESS

This disclosure relates to a continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst formulation are injected into a first reactor forming a first ethylene interpolymer. Process solvent, ethylene, optional comonomers, optional hydrogen and a heterogeneous catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in an optional third reactor, wherein an optional heterogeneous catalyst formulation may be employed. In a solution phase, the first, second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is passivated and following a phase separation process an ethylene interpolymer product is recovered. 1. A continuous solution polymerization process comprising:i) injecting ethylene, a process solvent, a single site catalyst formulation, optionally one or more α-olefins and optionally hydrogen into a first reactor to produce a first exit stream containing a first ethylene interpolymer in said process solvent;ii) passing said first exit stream into a second reactor and injecting into said second reactor, ethylene, said process solvent, a first heterogeneous catalyst formulation, optionally one or more α-olefins and optionally hydrogen to produce a second exit stream containing a second ethylene interpolymer and said first ethylene interpolymer in said process solvent;iii) passing said second exit stream into a third reactor and optionally injecting into said third reactor, ethylene, process solvent, one or more α-olefins, hydrogen and a second heterogeneous catalyst formulation to produce a third exit stream containing an optional third ethylene interpolymer, said second ethylene interpolymer and said first ethylene interpolymer in ...

HDPE ARTICLES

This disclosure relates to manufactured articles containing ethylene interpolymers. Specifically, films, containers and lids comprising at least one layer of an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Y) greater than 0; total catalytic metal ≧3.0 ppm; ≧0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (X) greater than 0. The ethylene interpolymer products have a melt index from about 0.4 to about 100 dg/minute, a density from about 0.950 to about 0.970 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 55% to about 97%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation. 2. The manufactured article of claim 1 , further characterized as having ≧0.03 terminal vinyl unsaturations per 100 carbon atoms.3. The manufactured article of claim 1 , further characterized as having ≧3 parts per million (ppm) of a total catalytic metal.4. The manufactured article of claim 1 , further characterized as having a Dimensionless Modulus claim 1 , X claim 1 , greater than 0.5. The manufactured article of claim 1 , further characterized as having ≧0.03 terminal vinyl unsaturations per 100 carbons and ≧3 parts per million (ppm) of total catalytic metal.6. The manufactured article of claim 1 , further characterized as having ≧3 parts per million (ppm) of total catalytic metal and a Dimensionless Modulus claim 1 , X claim 1 , greater than 0.7. The manufactured article of claim 1 , further characterized as having ≧0.03 terminal vinyl unsaturations per 100 carbons and a Dimensionless Modulus claim 1 , X claim 1 , greater than 0.8. The manufactured article of claim 1 , further characterized as ...

Resin fuel tube

A resin fuel tube is provided, which includes at least one resin layer, wherein the resin layer is made of a resin composition comprising: (A) a polypropylene prepared through polymerization with the use of a metallocene catalyst; and (B) a polypropylene material having a melting point of 137° C. to 160° C., the resin composition having a mixing weight ratio of the components (A) and (B) satisfying (A)/(B)=95/5 to 50/50, wherein the resin layer has a structure such that a soft structural portion (Y) of the component (A) intrudes into a space between crystalline structural portions (X) of the component (B). Therefore, the resin fuel tube is light-weight, excellent in impact resistance and heat resistance, free from fuel leakage, and usable in an atmosphere at 130° C. or higher, for example, in an automotive engine room or the like.

OLEFIN POLYMERIZATION METHOD AND SYSTEM

The present application relates to an olefin polymerization method and system in the field of olefin polymerization. The method combines a supported double catalyst with a series process, introduces a liquid material obtained after heat exchange and gas-liquid separation of a circulation gas flow into a separate first reactor to get into contact with the supported double catalyst for polymerization reaction, and then introduces the reaction material and the first polyolefin generated by reaction into a second reactor to continue polymerization reaction, thereby enabling particles to circulate between first reactor and second reactor, improving mixing effect of two polyolefins with obvious differences in properties, avoiding the occurrence of phase separation, and facilitating the production of polyolefins with excellent performance. At the same time, ethylene gas is introduced into first reactor to further reduce the hydrogen/ethylene ratio, increase the molecular weight of polyethylene and improve the product performance. 1. An olefin polymerization method , comprising the following steps:{'b': '1', 'S, compressing and condensing circulation gas flow comprising an olefin and a condensing agent exported from an outlet of a second reactor to obtain a gas-liquid mixture; carrying out gas-liquid separation of the gas-liquid mixture to obtain a gas material and a liquid material, wherein the liquid material comprises a first liquid material and a second liquid material having the same or different compositions;'}{'b': '2', 'S, conveying the gas material and the first liquid material back to the second reactor for circulation, introducing the second liquid material into a first reactor, simultaneously conveying ethylene and a catalyst into the first reactor, and polymerizing the olefin in contact with the catalyst in the first reactor to form a mixture comprising a first polyolefin;'}{'b': '3', 'S, leading out the mixture comprising the first polyolefin from the first ...

Foamed Polyethylene Compositions

A foamable or foamed article comprising a diene terpolymer, the diene terpolymer comprising (or consisting essentially of) from 0.01 wt % to 10.0 wt % diene derived units, and 1.0 wt % to 20 wt % of C 4 to C 10 α-olefin derived units based on the weight of the diene terpolymer, wherein the diene terpolymer: a) has a g′ vis of less than 0.90; b) has an Mw within a range of from 100,000 g/mol to 500,000 g/mol; c) has an Mw/Mn within the range of from 3.5 to 12.0; and d) an Mz/Mn of greater than 7.0. Inventive articles comprise a blend of a relatively high density linear polyethylene and the diene terpolymer.

Polymerization Process

A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including a majority of 2,2-dimethylpropane under polymerizable conditions to produce a polyolefin polymer is provided. 1. A polymerization process , the process comprising contacting one or more monomers , at least one catalyst system , and a condensing agent comprising a majority of 2 ,2-dimethylpropane under polymerizable conditions to produce a polyolefin polymer; wherein the production rate of the polyolefin polymer is at least 20% greater than the same process polymerizing with another C-Ccondensing agent.2. A polymerization process , the process comprising contacting one or more monomers , at least one catalyst system , and a condensing agent comprising a mixture of 2 ,2-dimethylpropane and at least another C-Ccondensing agent under polymerizable conditions to produce a polyolefin polymer.3. The process of claim 2 , wherein the production rate of the polyolefin polymer is at least 20% greater than the same process polymerizing substantially free of 2 claim 2 ,2-dimethylpropane.4. The process of claim 1 , wherein the production rate of the polyolefin polymer is at least 25% greater than the same process polymerizing with another C-Ccondensing agent.5. The process of claim 1 , wherein the production rate of the polyolefin polymer is at least 30% greater than the same process polymerizing with another C-Ccondensing agent.6. The process of claim 1 , wherein the C-Ccondensing agent comprises n-butane claim 1 , isobutane claim 1 , n-pentane claim 1 , isopentane claim 1 , n-hexane claim 1 , isohexane claim 1 , n-heptane claim 1 , n-octane claim 1 , or mixtures thereof.7. The process of any one of claim 1 , wherein the C-Ccondensing agent is isopentane.8. The process of claim 1 , wherein the ratio of the 2 claim 1 ,2-dimethylpropane to the C-Ccondensing agent is greater than or equal to 50:50.9. The process of claim 1 , wherein the ratio of the 2 claim 1 ,2- ...

Bimodal PE Resins with Improved Melt Strength

A method comprising introducing a polymerization feed comprising an α-olefin, a diluent, and a diene to a polymerization system, under polymerization conditions, whereby a polymer product is produced, wherein the diene is present at a level in the range of from about 1 ppm to about 1000 ppm based on the diluent.

STABILIZATION OF HOT MELT ADHESIVES

The present invention pertains to a stabilized hot melt adhesive containing a) one or more hot melt adhesive materials and b) a stabilizer composition. The one or more hot melt adhesive materials a) include a polyolefin, a styrene-isoprene-styrene block co-polymer, a styrene-butadiene-styrene block co-polymer, a polyacrylate, an acryl-copolymer, an ethylene vinyl acetate, a polyamide, a polyester, a polyurethane, a polyimide, a silane terminated polyolefin, a silane terminated poly-ether, and a silane terminated polyurethane. The stabilizer composition includes a component (B), which is a polymeric sterically hindered amine, and a component (C), which is a specific sterically hindered phenol. 23-. (canceled)4: The stabilized hot melt adhesive according to claim 1 , wherein the stabilizer composition consists of components (B) and (C).5: The stabilized hot melt adhesive according to claim 1 , wherein a weight ratio between components (B) and (C) is between 1:5 and 5:1.69-. (canceled)14: The stabilized hot melt adhesive according to claim 1 , wherein the stabilizer composition further comprises:one or more additives selected from the group consisting of a phosphite, a thioether, a secondary arylamine, a hydroxyl-amine based stabilizer, a UV-absorber, and an inorganic stabilizer.17: The stabilized hot melt adhesive according to claim 16 , wherein the stabilizer composition consists of components (B) and (C).18: The stabilized hot melt adhesive according to claim 16 , wherein a weight ratio between components (B) and (C) is between 1:5 and 5:1.23: The stabilized hot melt adhesive according to claim 16 , wherein the stabilizer composition further comprises:one or more additives selected from the group consisting of a phosphite, a thioether, a secondary arylamine, a hydroxyl-amine based stabilizer, a UV-absorber, and an inorganic stabilizer.25: The stabilized hot melt adhesive according to claim 1 , wherein the hot melt adhesive comprises a polyolefin claim 1 , and ...

Olefin Polymer And Method For Preparing Same

In the present invention, there is provided an olefin polymer which has excellent processability and dimensional stability and thus is useful for hollow molding of pipes or the like. 1. An olefin polymer having a 2L Bloma swell value of 1.2 to 2.2 which is determined according to the following Equation 1:{'br': None, 'i': c', 'M', 'c', 'c, 'sub': 'z+1', '2L Bloma swell=(Capillary swell)×1+()×2+3\u2003\u2003[Equation 1]'}{'sup': '7', 'in the above equation 1, c1=1.27, c2=2.40E, and c3=−0.940, and'}{'sub': 'z+1', 'the Capillary swell is a value of the olefin polymer measured using a capillary rheometer at a temperature of 210° C. and a shear rate of 700/s, and Mis a Z-average molecular weight of the olefin polymer measured using a gel permeation chromatography (GPC) at a temperature of 160° C. with respect to the olefin polymer to be measured.'}2. The olefin polymer of claim 1 , wherein the Z-average molecular weight (Mz+1) is 300 claim 1 ,000 g/mol to 6 claim 1 ,000 claim 1 ,000 g/mol.3. The olefin polymer of claim 1 , wherein the capillary swell is 1.3 to 2.2.4. The olefin polymer of claim 1 , wherein it has a density of 0.930 g/cmto 0.960 g/cmmeasured according to ASTM D1505.5. The olefin polymer of claim 1 , wherein it has a melt index of 0.01 g/10 min to 2 g/10 min which is measured at a temperature of 190° C. under a load of 2.16 kg according to standard ASTM D1238.6. The olefin polymer of claim 1 , wherein it has a polydispersity index (PDI) of 2.5 to 30.7. The olefin polymer of claim 1 , which is a copolymer of ethylene and alpha olefin.8. The olefin polymer of claim 1 , which is a copolymer of ethylene; and 1-octene claim 1 , 1-hexene or 1-butene.10. The method for preparing an olefin polymer of claim 9 , wherein the second metallocene compound and third metallocene compound are each independently in an amount of 50 to 200 parts by weight based on 100 parts by weight of the first metallocene compound.11. The method for preparing an olefin polymer of claim 9 , ...

HOT MELT ADHESIVE

Disclosed is a hot melt adhesive comprising: (A) a metallocene based propylene homopolymer, (B) a metallocene based ethylene/α-olefin copolymer, (C) a tackifier resin, and (D) a plasticizer, wherein the plasticizer (D) comprises (D1) an oil and (D2) at least one polymer selected from polybutene, polybutadiene, polyisobutylene, and polyisoprene. This hot melt adhesive has an initial adhesive strength enough to enable a pressure sensitive adhesion body to stick easily on a member, thus making it possible to firmly hold the pressure sensitive adhesion body on the member. The hot melt adhesive is also excellent in releasability, thus causing no adhesive residue on the member when the pressure sensitive adhesion body is peeled from the member. 1: A hot melt adhesive comprising: (A) a metallocene based propylene homopolymer , (B) a metallocene based ethylene/α-olefin copolymer , (C) a tackifier resin , and (D) a plasticizer , whereinthe plasticizer (D) comprises (D1) an oil and (D2) at least one polymer selected from polybutene, polybutadiene, polyisobutylene, and polyisoprene.2: The hot melt adhesive according to claim 1 , wherein the oil (D1) comprises a naphthene oil.3: The hot melt adhesive according to claim 1 , wherein the polymer (D2) comprises polybutene.4: The hot melt adhesive according to claim 1 , which comprises the polymer (D2) in an amount of 5 to 90 parts by weight based on 100 parts by weight of the total weight of the oil (D1) and the polymer (D2).5: The hot melt adhesive according to claim 1 , wherein the metallocene based propylene homopolymer (A) has a melting point of 100° C. or lower. The present invention relates to a hot melt adhesive, and more particularly to a hot melt adhesive which is useful as a pressure sensitive adhesive.As used herein, the “pressure sensitive” is a specific concept of “adhesive”, and the “adhesive” comprises both “pressure sensitive adhesive” and “non-pressure sensitive adhesive”.A hot melt adhesive can be used without a ...

MULTI-LAYERED FILMS ORIENTED IN THE MACHINE DIRECTION AND ARTICLES COMPRISING THE SAME

The present invention provides uniaxially oriented films and packages formed from such films. In one aspect, a uniaxially oriented film comprises (a) a first layer comprising (i) a first composition comprising an ethylene-based polymer prepared in the presence of a single-site catalyst, wherein the first composition has a density of 0.935 g/cm3 to 0.965 g/cm3, a melt index (I2) of 0.5 to 6 g/10 minutes, and a MWD of 6.0 or less, and (ii) a Ziegler-Natta catalyzed ultra low density polyethylene having a density N of 0.880 g/cm3 to 0.912 g/cm3, a melt index (I2) of 0.5 to 6 g/10 minutes, and a MWD of 6.0 or less, (b) a second layer comprising at least one polyolefin, and (c) at least one inner layer between the first layer and the second layer comprising a high density polyethylene. The film is oriented in the machine direction at a draw ratio of between 4:1 and 10:1, and can exhibit a machine direction 2% secant modulus of 85,000 psi or more when measured as per ASTM D882. 3. The uniaxially oriented film of claim 2 , wherein the at least one inner layer further comprises a linear low density polyethylene having a density of 0.912 g/cmto 0.935 g/cmand a melt index (I) of 0.5 to 6.0 g/10 minutes.4. The uniaxially oriented film of claim 2 , wherein the at least one inner layer comprises 100% by weight of the Ziegler-Natta catalyzed ultra low density polyethylene.5. The uniaxially oriented film of claim 2 , wherein the at least one inner layer further comprises a second composition comprising an ethylene-based polymer prepared in the presence of a single-site catalyst claim 2 , wherein the second composition has a density of 0.935 g/cmto 0.965 g/cmand a melt index (I) of 0.5 to 6 g/10 minutes.6. The uniaxially oriented film of claim 1 , wherein the first composition and/or the second composition further comprises an ethylene-based polymer prepared in the presence of a Ziegler-Natta catalyst.7. The uniaxially oriented film of claim 1 , wherein the at least one polyolefin ...

Glue Compositions and Methods

Glue compositions and methods for their manufacture are provided. A glue composition contains a metallocene-catalyzed polyolefin wax present in an amount of at least 25 percent, by weight, and a tackifier present in an amount of at least 20 percent, by weight. The glue composition is solid at room temperature and is configured to provide an adhesive layer onto a substrate upon abrasion thereagainst.

Reverse Staged Impact Copolymers

This invention relates to processes to prepare impact copolymers having an ethylene content of greater than 20 wt % using a process where ethylene polymer is made in the first stage and propylene polymer is made in the second stage.

Catalyst System Containing High Surface Area Supports and Sequential Polymerization to Produce Heterophasic Polymers

This invention relates to propylene polymers having multimodal molecular weight distribution and propylene polymerization processes using single site catalyst systems with supports having multimodal particle size distribution comprising one mode peaked at particle size of 3-70 μm, and another mode peaked at particle size of 70-200 μm, the support also having an average particle size of more than 30 μm up to 200 μm and a specific surface area of 400-800 m/g. 1. A catalyst system for making polyolefinic copolymers , comprising:(a) a single site catalyst precursor compound;(b) an activator; and(c) a support having:A) an average particle size of more than 30 μm up to 200 μm; and{'sup': '2', 'B) a specific surface area of 400 to 800 m/g; and'} D) 10 to 90 wt % of support particles having a particle size of 3 to 70 μm and 90 to 10 wt % of support particles having a particle size of greater than 70 to 200 μm, based upon the weight of the support; and/or', 'E) a multimodal particle size distribution comprising a first peak or inflection point having a peak particle size of 3 to 70 μm and a second peak or inflection point having a peak particle size of greater than 70 to 200 μm., 'C) an average pore diameter of 60 to 200 Angstrom; and'}2. The catalyst system of wherein the support has a multimodal particle size distribution comprising a first peak or inflection point having a peak particle size of 40 to 70 μm and a second peak or inflection point having a peak particle size of greater than 70 to 150 μm and the difference between the two peak sizes is at least 10 μm.3. The catalyst system of claim 1 , wherein the support has (1) 10 to 90 wt % of particles having a size of from 20-70 μm claim 1 , and (2) 90 to 10 wt % of particles having a size of greater than 70 to 150 μm.4. The catalyst system of claim 1 , wherein the support has a bimodal particle size distribution.5. The catalyst system of claim 1 , wherein the support has an average particle size of 40 to 150 μm claim 1 , ...

Heterophasic propylene copolymer with low extractables

Heterophasic propylene copolymer comprising a propylene —C 4 to C 12 α-olefin copolymer as a matrix in which an ethylene-propylene rubber is dispersed, said heterophasic propylene copolymer has good mechanical properties and low extractables.

Ethylene-Based Copolymer and Propylene-Alpha-Olefin-Diene Compositions for Use in Layered Articles

An elastomeric composition suitable for use in belts like transmission belts may comprise: from 5 to 100 phr of a propylene-α-olefin-diene (PEDM) terpolymer comprising 80 wt % to 97.5 wt % propylene, 2.5 wt % to 20 wt % a-olefin, and 0.5 wt % to 10 wt % diene, said wt % based on the weight of the PEDM terpolymer, and wherein the PEDM terpolymer has (a) Mooney viscosity (ML(1+4)) of 1 MU to 60 MU, (b) melt flow rate of 0.5 g/min to 100 g/min, and (c) a weight average molecular weight to n-average molecular weight (Mw/Mn) ratio of 1.5 to 3.0; and from 60 to 95 phr of an ethylene-based copolymer comprising 0 wt % to 95 wt % ethylene, 0 wt % to 10 wt % of one or more dienes, and 5 wt % to 60 wt % C3 to C12 α-olefin, said wt % based on the total weight of the ethylene-based copolymer.

Blends of linear low density polyethylenes

A polyethylene blend comprising a uniform dispersion of constituents (A) and (B): (A) a Ziegler-Natta catalyst-made linear low density polyethylene and (B) a metallocene catalyst-made linear low density polyethylene, a composition comprising the polyethylene blend and at least one additive, methods of making and using same, and manufactured articles and films comprising or made from same.

Methods of Making Polymer Compositions with Enhanced Elasticity by Employing VTP and HMP Catalyst Systems in Parallel Processes

Provided herein are methods of making blended polymer compositions having enhanced elasticity. The present methods comprise the steps of producing a first polymer composition using a VTP catalyst system, producing a second polymer composition using a HMP catalyst system and combining the first polymer composition and the second polymer composition to make the blended polymer composition. The present methods include blending/combining the polymer compositions produced by different catalyst systems. One such catalyst system includes (i) a vinyl-terminated polymer (VTP) catalyst system comprising a VTP catalyst compound (referred to herein also as a “VTP catalyst”) and one or more activators. Another catalyst system includes a high molecular-weight polymer (HMP) catalyst system comprising a HMP catalyst compound (referred to herein also as a “HMP catalyst”) and one or more activators. The activators of these different catalyst systems can be the same or different in whole or in part. 2. The method of claim 1 , wherein the VTP composition is a copolymer of (a) ethylene; (b) one or more alpha-olefins or cyclic olefins; and (c) diene.3. The method of claim 2 , wherein the diene is 5-ethylidene-2-norbornene.4. The method of claim 2 , wherein the one or more alpha-olefins or cyclic olefins is selected from propylene claim 2 , 1-butene claim 2 , 1-hexene claim 2 , 1-octene claim 2 , or combinations thereof.5. The method of claim 4 , wherein the one or more alpha-olefins or cyclic olefins is propylene.6. The method of claim 1 , wherein the total ethylene content of the VTP composition is about 20-100 wt % claim 1 , the total alpha-olefin or cyclic olefin content of the VTP composition is about 20-80 wt % claim 1 , and the total diene content of the VTP composition is about less than or equal to about 20 wt % claim 1 , based on the VTP composition.7. The method of claim 1 , wherein the VTP composition is a copolymer of (ethylene)x(propylene)y(diene)z where x=20-80 wt % claim 1 ...

PROCESS FOR THE OBTAINMENT OF A POLYOLEFIN COMPOSITION

A two steps polymerization process for obtaining a polyolefin composition comprising: 4. The polymerization process according to wherein the catalyst system is supported on an inert carrier.5. The polymerization process according to wherein the molar ratio between the metallocene compound of formula (I) and the iron complex of formula (II) (M/Fe ratio) ranges from 3:1 to 50:1.6. The polymerization process according to wherein the polyolefin composition comprises:a) from 30 wt % to 50 wt % of a propylene homopolymer;b) from 40 wt % to 65 wt % of a copolymer of ethylene and propylene, wherein the ethylene derived units content ranges from 20 wt % to 65 wt %;c) from 3 wt % to 7 wt % of polyethylene homopolymer;the sum a)+b)+c) being 100.7. (canceled)8. A polyolefin blend comprising the polyolefin composition of .9. Extruded articles comprising the polyolefin composition of .10. Films claim 6 , pipe claim 6 , fibers claim 6 , sheets claim 6 , profiles comprising the polyolefin composition of .11. Molded articles comprising the polyolefin composition of .12. Thermoformed articles comprising the polyolefin composition of .13. Automotive parts comprising the polyolefin composition of .14. Bumpers comprising the polyolefin composition of . The present invention relates to a polymerization process for the obtainment of a polyolefin based composition comprising an heterophasic propylene based polymer and polyethylene.Polyolefin compositions comprising an heterophasic propylene polymer and polyethylene are well known in the art. For example WO 2006/067023 relates to a polypropylene composition comprising (per cent by weight):WO 2006/125720 relates to a propylene polymer composition comprising (per cent by weight):These composition are obtained by using Ziegler Natta catalyst with a three steps process, one for each component of the composition.Even metallocene based catalyst systems have been used for the obtainment of such three components compositions, for example in EP 646 ...

Polyethylene Fabric, and Backing and Artificial Turf Made Therefrom

The present invention relates to a fabric, such as a backing suitable for tufted carpets or artificial turf, comprising slit films, tapes or monofilaments, said slit film, tape or monofilament comprising at least 70% by weight of a metallocene-catalyzed polyethylene composition based on the total weight of the slit film, tape or monofilament. The metallocene-catalyzed polyethylene composition comprised in the slit film, tape or monofilament is a metallocene-catalyzed polyethylene composition comprises: 116.-. (canceled)18. The fabric according to claim 17 , wherein said slit films claim 17 , tapes or monofilaments have a titer of at least 100 dTex to at most 1500 dTex.19. The fabric according to claim 17 , wherein said fabric is a woven fabric.20. The fabric according to claim 17 , wherein said metallocene-catalyzed polyethylene composition has a density of at least 0.910 g/cm3 to at most 0.945 g/cm3 claim 17 , as measured according to ISO 1183-2:2004 at a temperature of 23° C.21. The fabric according to claim 17 , wherein said metallocene-catalyzed polyethylene composition has a melt index MI2 of at least 0.2 g/10 min to at most 2.5 g/10 min claim 17 , as measured according to ISO 1133:2011 Procedure B at a temperature of 190° C. and a load of 2.16 kg.22. The fabric according to claim 17 , wherein said metallocene-catalyzed polyethylene composition has a molecular weight distribution Mw/Mn of at least 2.8 to at most 6.0 claim 17 , as measured using gel permeation chromatography claim 17 , with Mw being the weight-average molecular weight and Mn being the number-average molecular weight.23. The fabric according to claim 17 , wherein said metallocene-catalyzed polyethylene composition has a multimodal molecular weight distribution claim 17 , wherein said metallocene-catalyzed polyethylene composition has a bimodal molecular weight distribution.24. The fabric according to claim 17 , wherein said metallocene-catalyzed polyethylene A has a melt index MI2 of at least 0. ...

POLYMER BLEND, METHOD FOR MAKING THE SAME AND ROOFING MEMBRANE CONTAINING THE SAME

A polymer blend comprising 10 to 90 parts by weight of a propylene-based polymer component having a weight average molecular weight of at least 200 kg·mol; and 20 to 80 parts by weight of a propylene-based elastomer component comprising structural units derived from propylene and at least one of ethylene and C4-C12 alpha-olefins having a weight average molecular weight in the range from 5 to 50 kg·mol, method for making a membrane comprising the same and roofing membrane comprising the same. The polymer blend is particularly suitable for making roofing membrane due to advantageous elastic modulus in broad temperature ranges. 1. A polymer blend comprising:{'sup': '−1', '40 to 65 parts by weight of a propylene-based polymer component having a weight average molecular weight of at least 200 kg·mol, having at least 95 wt % propylene-derived units, and a melting temperature of at least 120° C.; and'}{'sup': '−1', '35 to 60 parts by weight of a propylene-based elastomer component comprising structural units derived from propylene and ethylene, having an ethylene content in a range from 8 to 16 wt %, based on the total weight of the propylene-based elastomer component, and having a weight average molecular weight in the range from 5 to 50 kg·mol.'}2. (canceled)3. The polymer blend of claim 1 , wherein the propylene-based elastomer component consists of structural units derived from propylene and structural units derived from ethylene.4. The polymer blend of claim 1 , wherein the propylene-based polymer has a melting temperature of at least 130° C.5. The polymer blend of claim 1 , comprising 45 to 55 parts by weight of the propylene-based polymer component; and 45 to 55 parts by weight of the propylene-based elastomer component.6. The polymer blend of claim 1 , wherein the propylene-based elastomer component has a weight average molecular weight in the range from 6 to 20 kg·mol.7. The polymer blend of claim 1 , wherein the propylene-based polymer component has a weight ...

HETEROPHASIC POLYPROPYLENE COMPOSITION

A heterophasic polypropylene composition comprises a matrix based on a propylene-random copolymer and a linear low density polyethylene dispersed in the matrix. The heterophasic polypropylene composition has both improved impact strength and reduced amount of fraction soluble in cold xylene (XCS), while maintaining optical properties. Further, the heterophasic polypropylene composition has an optimised ratio of impact strength to the amount of fraction soluble in cold xylene (XCS).p. 1. A heterophasic polypropylene composition (PP-C) comprising65.0-95.0 wt.-% of a propylene random copolymer having a comonomer content of 2.0-5.0 wt.-% and{'sup': '3', '5.0-35.0 wt.-% of a linear low density polyethylene (LLDPE) having a density in the range of 905-923 kg/m, when measured according to ISO1183,'}wherein the heterophasic polypropylene composition is characterised by having at least one first melting peak in the range of 110-125° C. and said first melting peak having a melt enthalpy of 30-100 J/g when determined according to ISO11357.2. The heterophasic polypropylene composition (PP-C) according to claim 1 , comprising 70.0-92.0 wt.-% of the propylene random copolymer and 8.0-30.0 wt.-% of the linear low density polyethylene (LLDPE).3. The heterophasic polypropylene composition (PP-C) according to claim 1 , wherein the heterophasic polypropylene composition (PP-C) has at least a first and a second melting peak.4. The heterophasic polypropylene composition (PP-C) according to claim 1 , wherein the linear low density polyethylene (LLDPE) has a density of 910 to 921 kg/mand/or an MFR(190/2) of 0.1-30 g/10 min when measured according to ISO1133.5. The heterophasic polypropylene composition (PP-C) according to claim 1 , wherein the linear low density polyethylene (LLDPE) is a terpolymer of ethylene and two different comonomers selected from alpha olefins having from 4 to 10 carbon atoms.6. The heterophasic polypropylene composition (PP-C) according to claim 1 , wherein the ...

POLYMER COMPOSITION COMPRISING LINEAR LOW-DENSITY POLYETHYLENE

The present invention relates to a polymer composition comprising a linear low-density polyethylene produced in the presence of a single-site catalyst system and 0.01-2.00% by weight of a nucleating agent, the linear low-density polyethylene having a density as determined according to ISO 1183-1 (2012), method A of >900 kg/mand ≤940 kg/m, wherein films produced using the polymer composition have a total defected area of ≤50 ppm of surface, the total defected area being the fraction of surface area of the film accounted for by gels having an equivalent diameter of >50 μm. Such polymer compositions are suitable for the production of films having a low oxygen transmission rate and a low water vapour transmission rate. 1. Polymer composition comprising ≥0.01% and ≤2.00% by weight of nucleating agent compared to the total weight of the polymer composition and a linear low-density polyethylene produced in the presence of a single-site catalyst system , the linear low-density polyethylene having a density as determined according to ISO 1183-1 (2012) , method A of ≥900 kg/mand ≤940 kg/mwherein films produced using the polymer composition have a total defected area of ≤50 ppm of surface,{'sup': '2', 'the total defected area being the fraction of surface area of the film accounted for by gels having an equivalent diameter of >50 μm as determined with a FSA-100 film surface analyser on a film sample with a total surface size of ≥1.0 m.'}2. Polymer composition according to wherein the total defected area is determined at a film having a surface area of ≥5.0 m.3. Polymer composition according to claim 1 , wherein the polymer composition comprises a nucleating agent.5. Polymer composition according to wherein the nucleating agent is 1 claim 3 ,2-cyclohexane dicarboxylic acid calcium salt.6. Polymer composition according to claim 1 , wherein the single-site catalyst system comprises a metallocene single-site catalyst component.7. Polymer composition according to claim 1 , wherein ...

Polymer Compositions and Processes for Their Production

Provided herein are polymerization processes and polymer compositions including reactor blends formed by such polymerization processes. The polymerization processes include copolymerization using two metallocene catalyst systems: the first catalyst system capable of producing polymers having 60% or more vinyl terminations, the second catalyst system capable of producing high molecular weight polymers, preferably incorporating at least some of the polymers produced by the first catalyst system into the high molecular weight polymers. The reactor blends formed thereby therefore include first and second copolymer components, which may differ in monomer content and weight-average molecular weight (Mw). Furthermore, the reactor blends may exhibit advantageous rheological properties, at least some of which are consistent with long-chain branching. Preferred reactor blends comprise ethylene-propylene-diene (EPDM) terpolymers. 115.-. (canceled)16. A polymer composition comprising a reactor blend of:(a) a first EPDM copolymer having ethylene-derived content in a range of 20 to 80 wt %, diene-derived content in a range of 0.3 to 15 wt %, Mw of 5,000 to 80,000 g/mol, and at least 60% vinyl terminations relative to the total number of end-group unsaturations in the first EPDM copolymer; and 'wherein the reactor blend has both (i) a phase angle δ at complex shear modulus G*=100,000 Pa of less than 54.5° and (ii) LCB index measured at 125° C. of less than 5.', '(b) a second EPDM copolymer having at least 5 wt % less ethylene content than the first EPDM copolymer, diene-derived content in a range of 0.3 to 15 wt %, and Mw at least 1.5 times greater than the Mw of the first EPDM copolymer;'}18. The polymer composition of claim 16 , wherein the HMP catalyst compound is selected from mono-cyclopentadienyl amido group 4 transition metal complexes; mono-Cp amido variants; bridged fluorenyl-cyclopentadienyl group 4 transition metal complexes; Cp-fluorenyl variants; biphenyl phenol (BPP) ...

BUTENE-1 POLYMER COMPOSITION HAVING HIGH MELT FLOW RATE

A butene-1 polymer composition having a MFR value of from 100 to 300 g/10 min., measured according to ISO 1133 at 190° C. with a load of 2.16 kg, made from or containing: 1. A butene-1 polymer composition having a MFR value of from 100 to 300 g/10 min. measured according to ISO 1133 at 190° C. with a load of 2.16 kg , and comprising:{'sub': 'A', 'A) a butene-1 homopolymer or a copolymer of butene-1 with one or more comonomers selected from the group consisting of ethylene and higher alpha-olefins, having a copolymerized comonomer content (C) of up to 5% by mole and'}{'sub': 'B', 'B) a copolymer of butene-1 with one or more comonomers selected from the group consisting of ethylene and higher alpha-olefins, having a copolymerized comonomer content (C) of from 6% to 20% by mole;'}wherein the composition having a total copolymerized comonomer content from 4% to 15% by mole referred to the sum of A) and B), and a content of fraction soluble in xylene at 0° C. of 75% by weight or less determined on the total weight of A) and B).2. The butene-1 polymer composition of claim 1 , wherein from 30% to 70% by weight of A) and from 30% to 70% by weight of B) claim 1 , referred to the total weight of A) and B).3. The butene-1 polymer composition of claim 1 , having DH TmII values of from 4 to 15 J/g claim 1 , measured with a scanning speed corresponding to 10° C./min.4. The butene-1 polymer composition of claim 1 , having a Mw/Mn value claim 1 , where Mw is the weight average molar mass and Mn is the number average molar mass claim 1 , both measured by GPC claim 1 , equal to or lower than 3.5.5. The butene-1 polymer composition of claim 1 , having a Mz value claim 1 , measured by GPC claim 1 , of 90 claim 1 ,000 g/mol or higher.6. The butene-1 polymer composition of claim 1 , having a Mw value equal to or greater than 50 claim 1 ,000 g/mol.7. A process for preparing the butene-1 polymer composition of claim 1 , comprising;at least two sequential stages, carried out in two or more ...

C2C3 Random Copolymer Composition

New C2C3 random copolymer composition, which shows improved sealing behaviour due to low sealing initiation temperature (SIT) and high hot tack force. In addition, the inventive composition shows an excellent sterilization behaviour, i.e. retention of low haze level after sterilization. The present invention is furthermore related to the manufacture of said copolymer composition and to its use. 1. A CCrandom copolymer composition comprising{'sub': 2', '3, 'claim-text': (a) an ethylene content in the range of from 2.0 to 4.8 wt %;', {'sub': '2', '(b) a melt flow rate MFR(230° C./2.16 kg) measured according to ISO 1133 in the range of from 4.0 to 12.0 g/10 min;'}, '(c) a melting temperature Tm as determined by DSC according to ISO 11357 of from 120 to 135° C.; and', '(d) a xylene cold soluble (XCS) fraction below 10.0 wt %;, '(A) 70.0 to 99.9 wt % of a CCrandom copolymer having'}{'sup': '3', 'sub': '2', '(B) 0.0 to 30.0 wt % of an ethylene-α-olefin plastomer having a density in the range of from 860 to 900 kg/mand an MFR(190° C./2.16 kg) measured according to ISO 1133 in the range of 0.5 to 50.0 g/10 min, and'}(C) one or more additives in a total amount of from 0.1 up to 5.0 wt %, based on the composition, selected from the group comprising slip agents, anti-block agents, UV stabilizers, antistatic agents, alpha-nucleating agents and antioxidants.2. The CCrandom copolymer composition according to claim 1 , wherein the CCrandom copolymer (A) comprises (i) an ethylene content in the range of from 1.5 to 3.5 wt %, and', {'sub': '2', '(ii) a melt flow rate MFR(230° C./2.16 kg) measured according to ISO 1133 in the range of 4.0 to 12.0 g/10 min and'}], '30.0 to 70.0 wt % of polymer fraction (A-1) having'} (i) an ethylene content in the range of from 3.6 to 6.0 wt % and', {'sub': '2', '(ii) a melt flow rate MFR(230° C./2.16 kg) measured according to ISO 1133 in the range of from 4.0 to 12.0 g/10 min.'}], '70.0 to 30.0 wt % of polymer fraction (A-2) having'}3. The CCrandom ...

Ethylene interpolymers having improved color

This disclosure relates to a continuous solution polymerization process where ethylene interpolymer products having an improved color index; for example, products having higher whiteness (Whiteness Index (WI)) and lower yellowness (Yellowness Index (YI)). Product color was improved by adjusting selected solution polymerization reaction conditions. The disclosed ethylene interpolymer products have improved color relative to comparative polyethylene compositions.

REACTOR FOR A METALLOCENE CATALYST-BASED SOLUTION POLYMERIZATION PROCESS FOR PREPARING POLYOLEFIN POLYMERS

Disclosed is a reactor for solution polymerization process using a metallocene catalyst for preparing polyolefin. The reactor includes: a reaction vessel for mixing a hydrocarbon-based solvent and an olefin monomer to produce polyolefin; a feed inlet installed at a lower portion of the reaction vessel to feed a feed including an unreacted monomer, a solvent, and a catalyst into the reaction vessel; a guide pipe having a cylinder shape being open at respective ends, installed along a central axis of the reaction vessel, and dividing an internal space of the reaction vessel into an up-flow region where a reaction mixture flows upward and a down-flow region where the reaction mixture flows downward; a swirling flow-inducing blade attached to the exterior surface of the guide pipe, causing the reaction mixture in the reaction vessel to rise along the exterior surface of the guide pipe while forming a swirling flow. 1. A reactor for a solution polymerization process using a metallocene catalyst for preparing polyolefin polymers , the reactor comprising:a reaction vessel configured to mix a hydrocarbon-based solvent and an olefin monomer, thereby preparing polyolefin polymers;a feed inlet installed at a lower portion of the reaction vessel and feeding a feed including an unreacted monomer, a solvent, and a catalyst into the reaction vessel;a guide pipe having a cylinder shape being open at respective ends, installed in the reaction vessel along a central axis of the reaction vessel, and dividing an internal space of the reaction vessel into an up-flow region where a reaction mixture flows upward and a down-flow region where the reaction mixture flows downward;a swirling flow-inducing blade having a helical screw blade shape and attached to an exterior surface of the glide pipe, the swirling flow-inducing blade causing the reaction mixture in the reaction vessel to rise along the exterior surface of the guide pipe while forming a swirling flow, then to enter into the guide ...

Polyolefin Compositions Comprising Nanoparticles

The present invention relates to a polyolefin composition comprising: 115.-. (canceled)16. A polyolefin composition comprising:a) at least one polyolefin having a multimodal molecular weight distribution and prepared in the presence of at least one metallocene catalyst; andb) at least 0.5% by weight of silica nanoparticles based on the total weight of the polyolefin composition.17. The polyolefin composition according to claim 16 , wherein the polyolefin composition comprises at most 10.0% by weight of silica nanoparticles.18. The polyolefin composition according to claim 16 , wherein the polyolefin composition comprises at least 90% by weight of the polyolefin claim 16 , based on the total weight of the polyolefin composition.19. The polyolefin composition according to claim 16 , wherein the polyolefin is polyethylene.20. The polyolefin composition according to claim 16 , wherein the polyolefin has M/Mratio of at least 4.5.21. The polyolefin composition according to claim 16 , wherein the polyolefin has a High Load Melt Index at most 30 g/10 min claim 16 , as measured following the procedure of ISO 1133 condition G using a temperature of 190° C. and a load of 21.6 kg.22. The polyolefin composition according to claim 16 , wherein the polyolefin has a High Load Melt Index at least 1.0 g/10 min claim 16 , as measured following the procedure of ISO 1133 condition G using a temperature of 190° C. and a load of 21.6 kg.23. The polyolefin composition according to claim 16 , wherein the polyolefin has a long chain branching index gthat is at most 0.90.24. The polyolefin composition according to claim 16 , wherein the polyolefin has a weight average molecular weight Mof at least 80 kDa.25. The polyolefin composition according to claim 16 , wherein the polyolefin composition has an M/Mratio of at least 8.0.26. The polyolefin composition according to claim 16 , wherein the multimodal molecular weight distribution of the polyolefin is a bimodal molecular weight distribution.27 ...

Polyolefin Compositions

The present invention relates to a polyolefin composition comprising:a) at least one first polyolefin having a multimodal molecular weight distribution and prepared in the presence of at least one metallocene catalyst; andb) at least one second polyolefin having a Mw/Mn of at least 10.0 and a long chain branching index grheo of at least 0.85, wherein said second polyolefin is present in an amount of at least 1.0% by weight based on the total weight of the polyolefin composition; wherein the second polyolefin has a High Load Melt Index of at least 0.60 times the High Load Melt Index HLMI of the first polyolefin and of at most 1.40 times the High Load Melt Index HLMI of the first polyolefin, as measured following the procedure of ISO 1133 condition G using a temperature of 190° C. and a load of 21.6 kg. The present invention also relates to processes for preparing said composition, and articles made therefrom.

Ethylene/Alpha-Olefin Copolymer and Method for Preparing the Same

The present invention provides an ethylene/alpha-olefin copolymer satisfying the following conditions (a) to (d): 3. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the Rvalue is 0.19 to 0.46.4. The ethylene/alpha-olefin copolymer according to claim 2 , wherein the Rvalue is 0.02 to 0.10.6. The ethylene/alpha-olefin copolymer according to claim 5 , wherein the Rvalue is 0.12 to 0.30.7. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the density is 0.855 to 0.90 g/cc.8. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the melt index (190° C. claim 1 , 2.16 kg load conditions) is 1.5 to 37 dg/min.9. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the number of vinyl functional groups per 1000 carbon atoms claim 1 , measured by nuclear magnetic spectroscopy analysis is 0.01 to 0.3; and{'sub': 10', '2.16, 'a MI/MIvalue, which is a melt index (190° C., 10 kg load conditions) value with respect to the melt index (190° C., 2.16 kg load conditions), is 8.5 or less.'}10. The ethylene/alpha-olefin copolymer according to claim 1 , which has a weight average molecular weight (Mw) of 40 claim 1 ,000 to 150 claim 1 ,000 g/mol.11. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the molecular weight distribution is 1.5 to 2.2.12. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the alpha-olefin comprises one or more selected from the group consisting of propylene claim 1 , 1-butene claim 1 , 1-pentene claim 1 , 4-methyl-1-pentene claim 1 , 1-hexene claim 1 , 1-heptene claim 1 , 1-octene claim 1 , 1-decene claim 1 , 1-undecene claim 1 , 1-dodecene claim 1 , 1-tetradecene claim 1 , 1-hexadecene claim 1 , and 1-eicocene.13. The ethylene/alpha-olefin copolymer according to claim 1 , wherein the alpha/olefin is comprised in an amount of greater than 0 to 99 mol % or less based on a total weight of the copolymer.15. The method for preparing the ethylene/alpha-olefin copolymer ...

Caps or Closures Made From a Resin Composition Comprising Polyethylene

The present invention relates to caps or closures made from a resin composition comprising 115.-. (canceled)16. A cap or closure made from a resin composition comprising:{'sup': '3', 'at least one polyethylene having a density of at least 0.940 g/cmwhen measured following the ISO 1183-2 method at 23° C.;'}at least 400 ppm based on the total weight of the resin composition of erucamide; andat least 700 ppm based on the total weight of the resin composition of at least one ultraviolet absorber selected from the hydroxyphenylbenzotriazole class.17. The cap or closure according to claim 16 , wherein the resin composition further comprises behenamide.18. The cap or closure according to claim 16 , wherein the ultraviolet absorber comprises 2-(3-t-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotriazole claim 16 , 2-(2-hydroxy-5-methylphenyl)benzotriazole claim 16 , 2-(3′ claim 16 ,5′-di-t-butyl-2′-hydroxyphenyl)benzotriazole claim 16 , 2-(5′-t-butyl-2′-hydroxyphenyl)benzotriazole claim 16 , 2-(2′-hydroxy-5′-t-octylphenyl)benzotriazole claim 16 , 2-(3′-s-butyl-2′-hydroxy-5′-t-butylphenyl)benzotriazole claim 16 , 2-(2′-hydroxy-4′-octyl oxyphenyl)benzotriazole claim 16 , 2-(3′ claim 16 ,5′-di-t-amyl-2′-hydroxyphenyl)benzotriazole claim 16 , 2-[2′-hydroxy-3′ claim 16 ,5′-bis(α claim 16 ,α-dimethylbenzyl)phenyl]-2H-benzotriazole claim 16 , 2-[(3′-t-butyl-2′-hydroxyphenyl)-5′-(2-octyloxycarbonylethyl)phenyl]-5-chlorobenzotriazole claim 16 , 2-[3′-t-butyl-5′-[2-(2-ethyl hexyl oxy)carbonylethyl]-2′-hydroxyphenyl]-5-chlorobenzotriazole claim 16 , 2-[3′-t-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl]-5-chlorobenzotriazole claim 16 , 2-[3′-t-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl]benzotriazole claim 16 , 2-[3′-t-butyl-2′-hydroxy-5-(2-octyloxycarbonylethyl)phenyl]benzotriazole claim 16 , 2-[3′-t-butyl-2′-hydroxy-5′-[2-(2-ethylhexyloxy)carbonylethyl]phenyl]benzotriazole claim 16 , 2-[2-hydroxy-3-(3 claim 16 ,4 claim 16 ,5 claim 16 ,6-tetrahydrophthalimidemethyl)-5- ...

HETEROPHASIC POLYPROPYLENE WITH PROPYLENE HEXENE RANDOM COPOLYMER AS MATRIX

The present invention is directed to a heterophasic polypropylene composition with improved sterilization resistance and optical properties for blow molding applications, in particular for use in the blow-fill-seal process for preparing bottles. The present invention is further directed to a process for producing such a polypropylene composition using a single-site catalyst and to a container produced from such a polypropylene composition by blow molding, like a bottle, in particular a blow-fill-seal bottle, with improved haze before and after sterilization. The polypropylene composition comprises a blend of a propylene copolymer comprising 2.5 to 12.0 wt % of 1-hexene as a comonomer, and having a melt flow rate MFRof 0.5 to 20.0 g/10 min, and an ethylene homo- or copolymer having a melt flow rate MFRof 0.05 to 30.0 g/10 min and a density of 850 to 940 kg/m, wherein the xylene cold solubles (XCS) content of the polypropylene composition is from 5.0 to 30.0 wt %. 1. A polypropylene composition comprising a blend of:{'sub': '2', '(a) a propylene copolymer comprising 2.5 to 12.0 wt %, based on the weight of the propylene copolymer, of 1-hexene as a comonomer, and having a melt flow rate MFRof 0.5 to 20.0 g/10 min, and'}{'sub': '2', 'sup': '3', '(b) an ethylene homo- or copolymer having a melt flow rate MFRof 0.05 to 30.0 g/10 min and a density of 850 to 940 kg/m,'}wherein the xylene cold solubles (XCS) content of the polypropylene composition is from 5.0 to 30.0 wt %.2. The polypropylene composition according to claim 1 , wherein the blend comprises 70.0 to 95.0 wt % claim 1 , based on the weight of the blend claim 1 , of the propylene copolymer (a) claim 1 , and 5.0 to 30.0 wt % claim 1 , based on the weight of the blend claim 1 , of the ethylene homo- or copolymer (b).3. The polypropylene composition according to claim 1 , wherein the melting temperature Tof the polypropylene composition is higher than 120° C.4. The polypropylene composition according to claim 1 , ...

Caps and closures

This disclosure relates to caps and closures manufactured from an ethylene interpolymer product, or a blend containing an ethylene interpolymer product.

CONTAINER CARRIER

A flexible carrier for carrying a plurality of containers, such as soft drink and other beverage containers, is formed from a polymer composition which provides the carrier with improved recovery, tensile strength and tear resistance. The polymer composition includes about 40-60% by weight of a low density ethylene polymer having a density of about 0.910-0.950 grams/cm3 and about 40-60% by weight of a post-consumer recycled product blend of low density polyethylene polymer and linear low density polyethylene polymer. 1. A flexible carrier for carrying a plurality of containers , comprising a flexible sheet and a plurality of primary apertures formed in the sheet for receiving portions of the containers , the flexible sheet comprising a polymer composition which includes:about 30-80% by weight of a low density polyethylene polymer including about 80 to 100% by weight ethylene, the low density polyethylene polymer having a density of about 0.910-0.950 grams/cm3 and prepared using a high pressure polymerization process; andabout 20-70% by weight of a post-consumer recycled product blend of low density polyethylene polymer and linear low density polyethylene polymer.2. The flexible carrier of claim 1 , wherein the branched low density polyethylene polymer comprises a polyethylene homopolymer.3. The flexible carrier of claim 1 , wherein the branched low density polyethylene polymer comprises ethylene and another alpha-olefin comonomer.4. The flexible carrier of further comprising an additive that results in photodegradability.5. The flexible carrier of claim 1 , comprising not less than two and not more than fifteen of the primary apertures.6. The flexible carrier of claim 1 , wherein the branched low density polyethylene polymer has a density of about 0.920-0.935 grams/cm3.7. The flexible carrier of claim 1 , further comprising about 1-10% by weight of a single-site catalyzed ethylene-alpha olefin copolymer plastomer having a density of about 0.850-0.905 grams/cm3.8. ...

Production of Heterophasic Polymers in Gas or Slurry Phase

Methods for the production of heterophasic polymers in gas and slurry phase polymerization processes, and polymer compositions made therefrom, are disclosed herein.

ETHYLENE INTERPOLYMER PRODUCTS AND FILMS

This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δ, greater than or equal to 0.01, satisfying 0.01×(Z−50)≤Δ≤0.01×(Z−60)inequality wherein Z is a normalized molecular weight defined by

Reactive polyolefin hot-melt adhesive having low viscosity and use thereof for textile laminations

The invention relates to hot-melt adhesive compositions having at least one thermoplastic poly-a-olefin that is solid at 25° C. and that contains silane groups, at least one soft resin having a melting point or softening point between −10 and 40° C., and at least one silane that is liquid at 25° C. The hot-melt adhesive compositions are characterized by an improved open time and reduced viscosity compared to the prior art that cannot be achieved by means of other low-molecular-weight components that are normally added to reduce the viscosity, because the components escape from the adhesive formulation over time. The hot-melt adhesives according to the invention are suitable in particular as laminating adhesives and have a desirable low viscosity during the application, while good cross-linking density can be achieved by the addition of silane that is liquid at room temperature. Despite the extended open time, the hot-melt adhesive compositions quickly build up an extremely high early strength and lead to a heat-stable adhesive bond.

ETHYLENE-BASED POLYMER, POLYETHYLENE-BASED RESIN COMPOSITION AND USE THEREOF, CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, OLEFIN POLYMERIZATION CATALYST CONTAINING THE COMPONENT, AND METHOD FOR PRODUCING ETHYLENE-BASED POLYMER BY USING THE CATALYST

An object of the present invention is to provide a polyethylene-based resin composition excellent in the moldability and at the same time, excellent in the balance between impact strength and stiffness as well as in the transparency, and a molded product and a film, which are obtained by the molding of the polyethylene-based resin composition. The polyethylene-based resin composition of the present invention comprises from 41 to 99 wt % of (A) an ethylene-based polymer satisfying specific conditions and from 1 to 59 wt % of (B) an ethylene-based polymer satisfying specific conditions, wherein MFR of the composition as a whole is from 0.05 to 50 g/10 min and the density is from 0.910 to 0.960 g/cm. 119-. (canceled)21. The olefin polymerization catalyst component of claim 20 , comprising at least one catalyst component selected from the group consisting of catalyst component (A-i′) and catalyst component (A-i″).22. The olefin polymerization catalyst component of claim 20 , comprising catalyst component (A-i′).23. The olefin polymerization catalyst component of claim 22 , comprising a metallocene compound represented by formula (1b) and a metallocene compound represented by formula (2b′).24. The olefin polymerization catalyst component of claim 22 , comprising a metallocene compound represented by formula (1b) and a metallocene compound represented by formula (7b).25. The olefin polymerization catalyst component of claim 20 , comprising catalyst component (A-i″).26. The olefin polymerization catalyst component of claim 20 , comprising catalyst component (A-iii).27. A production method of an ethylene-based polymer claim 20 , comprising polymerizing ethylene and claim 20 , optionally claim 20 , one or more α-olefins claim 20 , in the presence of the olefin polymerization catalyst component of .28. An ethylene-based polymer produced by the production method of . This application is a Divisional application of U.S. Ser. No. 15/041,044, filed Feb. 11, 2016, now allowed; ...

Polyolefin Blends Comprising Single-Site Catalyst Produced Syndiotactic Polypropylene and Polyethylene, Process and Articles Made From These Blends

The invention relates to blends of at least one single-site catalyst polyethylene and at least one single-site catalyst syndiotactic polypropylene with a specific syndiotactic polypropylene content φin weight percent relative to the total weight of both the polyethylene and the syndiotactic polypropylene contained in the blend corresponding to: 115.-. (canceled)17. The blend according to claim 16 , wherein a is:at most 1.30, and/orat least 0.50.18. The blend according to claim 16 , wherein the content of syndiotactic polypropylene is at most 55 wt % claim 16 , relative to the total weight of both the polyethylene and the syndiotactic polypropylene contained in the blend.19. The blend according to claim 16 , wherein the content of the syndiotactic polypropylene is at least 25 wt % claim 16 , relative to the total weight of both polyethylene and syndiotactic polypropylene contained in the blend.20. The blend according to claim 16 , wherein both the polyethylene and the syndiotactic polypropylene have a molecular weight distribution Mw/Mn of at most 5 and/or of at least 2.1.21. The blend according to claim 16 , wherein the polyethylene has a MI2 of at least 1.5 g/10 min as measured according to ISO 1133 at 190° C. under a load of 2.16 kg.22. The blend according to claim 16 , wherein at least one single-site catalyst catalyzed polyethylene is a metallocene polyethylene and/or at least one single-site catalyst catalyzed syndiotactic polypropylene is a metallocene syndiotactic polypropylene.23. The blend according to claim 16 , wherein the blend further comprises from 0.1 wt % to 50 wt % of a filler claim 16 , and the filler comprises one or more reinforcement material selected from glass fibers and carbon nanotubes.24. The blend according to claim 16 , wherein the syndiotactic polypropylene and the polyethylene are in co-continuous phases.26. The blend according to characterized in that the at least one single-site catalyst catalyzed syndiotactic polypropylene in the ...

LAMINATES MADE USING HOT MELT ADHESIVES BASED ON A BLEND OF PROPYLENE POLYMERS MADE USING SINGLE-SITE CATALYSTS

A laminate comprises a primary substrate and a secondary substrate mated with the primary substrate through contact with a hot melt adhesive. The hot melt adhesive comprises a polymer blend based on a low molecular weight semicrystalline propylene based polymer and a high molecular weight essentially amorphous propylene based polymer, both of which are prepared by using single-site catalysts. The composition further contains a compatible tackifier, a plasticizer, an antioxidant, and optionally a wax, a filler, a colorant, a UV absorber, another polymer, or combinations thereof. Particularly preferred applications include nonwoven disposable diaper and feminine sanitary napkin construction, diaper and adult incontinent brief elastic attachment, diaper and napkin core stabilization, diaper backsheet lamination, industrial filter material conversion, and surgical gown and surgical drape assemblies. 1. A laminate comprising a primary substrate and a secondary substrate mated with the primary substrate through contact with a hot melt adhesive , wherein the hot melt adhesive comprises:(a) a polymer blend containing at least one semicrystalline LMW SSC-PP polymer and at least one essentially amorphous HMW SSC-PP copolymer; both of which are either homopolypropylene or copolymers of propylene with an α-olefin comonomer prepared by using SSC catalysts; the weight ratio of the LMW SSC-PP polymer to the HMW SSC-PP polymer in the blends ranges from 9:1 to 1:9 and the total amount of the polymer blend in the composition of the present invention is from about 20% to about 80% by weight; the LMW SSC-PP having a weight average molecular weight from about 10,000 g/mole to about 100,000 g/mole, a crystallinity of about 18% to about 50%, and a Brookfield viscosity at 190° C. ranging from about 800 mPa·s to about 100,000 mPa·s; and the HMW SSC-PP polymer a weight average molecular weight greater than 100,000 g/mole, and a crystallinity of about 0% to about 18%, wherein the molecular ...

Polyethylene Compositions and Films Prepared Therefrom

A polyethylene composition comprising from about 0.5 to about 20 wt % of alpha-olefin derived units other than ethylene-derived units, with the balance including ethylene-derived units, total internal unsaturations (Vy1+Vy2+T1) of from about 0.10 to about 0.40 per 1000 carbon atoms, an MI of from about 0.1 to about 6 g/10 min, an HLMI of from about 5.0 to about 40 g/10 min, a density of from about 0.890 to about 0.940 g/ml, a Tw-Twvalue of from about −25 to about −20° C., an Mw/Mwvalue of from about 1.2 to about 2.0, an Mw/Mn of from about 4.5 to about 12, an Mz/Mw of from about 2.0 to about 3.0, an Mz/Mn of from about 7.0 to about 20, and a g′greater than 0.90. 1. A polyethylene composition comprising:from about 80 wt % to about 99.5 wt % ethylene-derived units; andfrom about 0.5 to about 20 wt % of alpha-olefin derived units other than ethylene-derived units;{'sub': 1', '2', '1', '2', '(vis), 'wherein the composition has total internal unsaturations (Vy1+Vy2+T1) of from about 0.10 to about 0.40 per 1000 carbon atoms, an MI of from about 0.1 to about 6 g/10 min, an HLMI of from about 5.0 to about 40 g/10 min, a density of from about 0.890 to about 0.940 g/ml, a Tw-Twvalue of from about −25 to about −20° C., an Mw/Mwvalue of from about 1.2 to about 2.0, an Mw/Mn of from about 4.5 to about 12, an Mz/Mw of from about 2.0 to about 3.0, an Mz/Mn of from about 7.0 to about 20, and a g′greater than 0.90.'}2. The polyethylene composition of claim 1 , where said polyethylene composition has a density of from about 0.912 to about 0.917 g/ml.3. The polyethylene composition of claim 1 , wherein the polyethylene composition has an MIR of from about 20 to about 40 and an HLMI of from about 7.0 to about 35.4. The polyethylene composition of claim 1 , wherein the polyethylene composition has a Tw-Twvalue of from about −24 to about −20.5° C. claim 1 , an Mw/Mwvalue of from about 1.35 to about 1.85 claim 1 , an Mw/Mn of from about 4.7 to about 12 claim 1 , an Mz/Mw of from about 2.2 ...

BLENDS OF LINEAR LOW DENSITY POLYETHYLENES

A polyethylene blend comprising a uniform dispersion of constituents (A) and (B): (A) a Ziegler-Natta catalyst-made linear low density polyethylene and (B) a metallocene catalyst-made linear low density polyethylene, a composition comprising the polyethylene blend and at least one additive, methods of making and using same, and manufactured articles and films comprising or made from same. 1. A polyethylene blend comprising a uniform dispersion of constituents (A) and (B): (A) a Ziegler-Natta catalyst-made linear low density polyethylene (ZN-LLDPE) and (B) a metallocene catalyst-made linear low density polyethylene (MCN-LLDPE); wherein the (A) ZN-LLDPE is from 15 to 75 weight percent (wt %) of the total weight of (A) and (B) and the (B) MCN-LLDPE is from 85 to 25 wt % of the total weight of (A) and (B); wherein by itself (A) is independently characterized by properties (i) to (iii): (i) a melt index (“I” , 190° C. , 2.16 kg) of 0.5 to 2.5 gram per 10 minutes (g/10 min.) measured according to ASTM D1238-04; (ii) a density from 0.905 to 0.930 gram per cubic centimeter (g/cm) , measured according to ASTM D792-13; and (iii) ηdetectable amount of long chain branching per 1 ,000 carbon atoms (“LCB Index”) , measured according to LCB Test Method; and wherein by itself (B) is independently characterized by properties (i) to (iii): (i) a melt index (“I” , 190° C. , 2.16 kg) of 0.5 to 2.5 g/10 min. measured according to ASTM D1238-04; (ii) a density from 0.905 to 0.930 g/cm , measured according to ASTM D792-13; and (iii) ηdetectable amount of long chain branching per 1 ,000 carbon atoms (“LCB Index”) , measured according to LCB Test Method; and with the proviso that the density of constituent (B) is within ±0.003 g/cmof the density of constituent (A); wherein the (A) ZN-LLDPE is made by copolymerizing ethylene and 1-butene in the presence of the Ziegler-Natta catalyst and the (B) MCN-LLDPE is made by copolymerizing ethylene and 1-butene in the presence of the metallocene ...

POLYOLEFIN MASTERBATCH BASED ON GRAFTED POLYPROPYLENE AND METALLOCENE CATALYZED POLYPROPYLENE

The present disclosure provides masterbatch compositions comprising a polypropylene grafted with a grafting monomer selected from maleic anhydride, acrylic acid or other acid or anhydride functional groups that could be grafted to a polypropylene backbone and a metallocene catalyzed polypropylene base resin. Additionally, the present disclosure provides a polymer composition which includes from 0.1 to 10.0 wt. % of the masterbatch composition, and from 50 to 90% of a third polypropylene, and from 5 to 45% of a filler. 1. A polymer composition comprising: (i) from 1 to 99 wt. %, based on the total weight of the masterbatch composition, of a first polypropylene composition, wherein the first polypropylene composition comprises a polypropylene grafted with a monomer containing acid or anhydride functional groups, and', '(ii) from 1 to 99 wt. %, based on the total weight of the masterbatch composition, of a second polypropylene obtained by using a metallocene catalyst,, '(A) from 0.1 to 10.0 wt. %, based on the total weight of the polymer composition, of a masterbatch composition comprising(B) from 50 to 90 wt %, based on the total weight of the polymer composition, of a third polypropylene, and(C) from 5 to 45 wt %, based on the total weight of the polymer composition, of a filler.2. The polymer composition of wherein the acid or anhydride functional group is maleic anhydride.3. The polymer composition of wherein the maleic anhydride is present in 0.5 to 5 wt. % claim 2 , based on the total weight of the grafted polypropylene.4. The polymer composition of wherein the filler is short glass fibers claim 1 , talc claim 1 , mica claim 1 , nanoclays claim 1 , fire retardants claim 1 , and foaming agents claim 1 , or mixtures thereof.5. The polymer composition of wherein the first polypropylene is an impact modified heterophasic polypropylene copolymer.6. The polymer composition of wherein the second polypropylene is a homopolymer.7. The polymer composition of wherein the ...

THERMOPLASTIC MOLDING COMPOUNDS

The invention relates to thermoplastic molding compounds having melt viscosities of less than 30,000 mPas for use as a hot-melt adhesive, comprising the components A and B, wherein component A comprises one or more C/Ccopolymers each produced with metallocene catalysts and each having a melt viscosity at 170° C. of less than 20,000 mPas, measured according to DIN 53019, and a molecular weight Mof 1000 g/mol to 50,000 g/mol, and component B comprises one or more C/Ccopolymers each produced with metallocene catalysts and each having a melt flow index MI of 1 to 100 g/min, measured at 190° C./2.16 kg, according to ASTM D 1238, and a molecular weight Mof 50,000 g/mol to 300,000 g/mol. Said thermoplastic molding compounds, because of the viscosity and mechanical properties thereof, are suitable for fiber mesh applications. 1. A thermoplastic molding material comprising the components A and B , wherein the thermoplastic molding material has a melt viscosity at 170° C. of less than 30 000 mPas , wherein{'sub': 3', '2', 'W, 'the component A comprises one or more C/C-copolymers each of which have been produced with metallocene catalysts and have a melt viscosity at 170° C. of less than 20 000 mPas measured according to DIN 53019 and a molecular weight Mof 1000 g/mol to 50 000 g/mol, and'}{'sub': 2', '3', 'W, 'the component B comprises one or more C/C-copolymers each of which have been produced with metallocene catalysts and have a melt index MI of 1 to 100 g/min measured at 190° C./2.16 kg according to ASTM D 1238 and a molecular weight Mof 50 000 g/mol to 300 000 g/mol.'}2. The thermoplastic molding material as claimed in claim 1 , wherein the thermoplastic molding material has a melt viscosity at 170° C. of 100 to 25 000 mPas claim 1 , preferably 500 to 20 000 mPas claim 1 , particularly preferably 1000 to 15 000 mPas claim 1 , measured according to DIN 53019.3. The thermoplastic molding material as claimed in claim 1 , wherein the thermoplastic molding material has a ...

HOT MELT ADHESIVE WITH FUNCTIONALIZED METALLOCENE CATALYZED POLYOLEFINS

A hot melt adhesive composition containing a functionalized polymer, namely, a metallocene catalyzed polyolefin elastomer grafted with maleic anhydride, together with a non-functionalized secondary polymer, namely, a metallocene catalyzed random or block polyolefin elastomer having a melt index equal to or greater than 15, a first tackifying resin having a softening point of at least 95° C., and a wax. The composition may optionally include an aromatic reinforcing resin having a softening point equal to or higher than 115° C., and a plasticizer. These hot melts provide superior hot tack, excellent adhesion, flexibility, and heat resistance above 150° F. in applications such as rigid packaging, hot fill packaging, and bottle labeling. 1. A hot melt adhesive composition , comprising:about 5% to about 50% by weight of a functionalized polymer comprising a metallocene catalyzed random polyolefin elastomer grafted with maleic anhydride;about 5% to about 70% by weight of a non-functionalized polymer comprising a metallocene catalyzed random or block polyolefin elastomer as a secondary polymer with melt index equal or greater than 15 MI;a solid or liquid plasticizer in an amount up about 30%;about 5% to about 30% by weight of a wax;about 20% to about 70% by weight of a first tackifying resin having a softening point of at least about 95° C.;about 0% to about 20% by weight of an aromatic reinforcing resin having a softening point equal to or higher than 115° C.;about 0.1% to about 5% by weight of a stabilizer; andabout 0% to about 3% by weight of auxiliary additives;wherein the viscosity of the composition is equal to or less than about 20,000 centipoise at 163° C. and the composition has an initial average peel force equal to or greater than 200 grams at room temperature using hard to bond clear label films selected from the group consisting of clear polypropylene, polyethylene, polypropylene/polyethylene, and metalized oriented polypropylene label films.2. The composition ...

Polypropylene composition with improved additive retention

A polypropylene composition characterized by improved additive retention can include at least 70 wt. % of a component (A) that is a random copolymer of propylene and ethylene produced with a metallocene-based polymerization catalyst. The component (A) can have a molecular weight distribution of at most 4.0. The polypropylene composition can include from 0.001 to 2.0 wt. % of a component (B) that is an additive that migrates to a surface of the polypropylene composition. The polypropylene composition can include a component (C) that is a thermoplastic polymer different from component (A), and is not a metallocene polypropylene homopolymer. The polypropylene composition can have a gloss at 20° of at least 75. Articles can be produced from the polypropylene composition, including articles that require specific surface properties over an extended period of time.

High melt strength polypropylene and process of preparation thereof

A high melt strength resin composition includes at least a) non-functionalized polypropylene, b) at least one acrylate such as zinc diacrylate, calcium diacrylate or aluminum triacrylate in a total amount of from 0.1 to 5% by weight based on the weight of non-functionalized polypropylene, and c) at least one acid neutralizer in a total amount of from 0.005 to 5% by weight based on the total weight of the at least one acrylate. The resin composition is compounded at a processing temperature between 185° C. and 260° C. to obtain the high melt strength polypropylene.

HOT MELT ADHESIVE

The present invention provides a hot melt adhesive for high-speed coating and spiral coating at low temperature. The hot melt adhesive has excellent adhesion to polyethylene and nonwoven fabric, and is suitable for disposable products. The hot melt adhesive comprises: (A) a propylene homopolymer having a melting point of 100° C. or lower which is obtainable by polymerizing propylene using a metallocene catalyst; and (B) an ethylene-based copolymer. 1. A hot melt adhesive , comprising:(A) a propylene homopolymer which has a melting point not higher than 100° C. and is obtainable by polymerizing propylene with a metallocene catalyst;(B) an ethylene-based copolymer;(C) a tackifier resin; and(D) an oil,wherein (A) the propylene homopolymer comprises both (A1) a propylene homopolymer having weight average molecular weight not more than 60,000 and (A2) a propylene homopolymer having weight average molecular weight more than 60,000,wherein (B) the ethylene-based copolymer comprises an ethylene/α-olefin copolymer, and the ethylene/α-olefin copolymer comprises an ethylene/propylene copolymer, andwherein (A) the propylene homopolymer is 60 to 95 parts by weight per 100 parts by weight of the total weight of (A) the propylene homopolymer and (B) the ethylene-based copolymer.2. The hot melt adhesive according to claim 1 , wherein (B) the ethylene-based copolymer comprises an ethylene/α-olefin copolymer which is obtainable by polymerization with a metallocene catalyst claim 1 , and wherein the ethylene/α-olefin copolymer comprises an ethylene/propylene copolymer.3. The hot melt adhesive according to claim 1 , wherein the adhesive has a melt viscosity at 150° C. of 7 claim 1 ,000 mPa·s or less.4. The hot melt adhesive according to claim 1 , wherein the adhesive further comprises (E) a wax claim 1 , and (E) the wax comprises a wax modified with a carboxylic acid and/or carboxyl anhydride.5. A disposable product comprising the hot melt adhesive of . The present invention relates to ...

Production of Heterophasic Polymers in Gas or Slurry Phase

Methods for the production of heterophasic polymers in gas and slurry phase polymerization processes, and polymer compositions made therefrom, are disclosed herein. 1. A method for making a heterophasic polymer , the method comprising:{'sup': 2', '2, 'a. contacting a single-site catalyst precursor, an activator, and a support to produce a catalyst system, wherein the support comprises silica and is characterized by an average surface area of from 400 m/g to 800 m/g;'}b. contacting a monomer and optionally a comonomer in at least one gas or slurry phase reactor with the catalyst system under polymerization conditions comprising a first molar ratio of monomer to comonomer of from 90:10 to 100:0, to produce a porous matrix phase comprising a random statistical distribution of comonomer units;c. adjusting, in the presence of the matrix phase, the polymerization conditions to a second molar ratio of monomer to comonomer of from 90:10 to 10:90 to produce a fill phase at least partially filling pores in the matrix phase; andd. recovering a reactor effluent comprising a granular heterophasic polymer.2. The method of claim 1 , wherein the catalyst system comprises a support having:an average pore diameter of from 60 to 200 Angstrom;at least 20% of the incremental pore volume comprised of pores having a pore diameter larger than 100 Angstrom; andan activator comprising aluminoxane, wherein the aluminoxane loading is at least 7 mmol Al/g silica.3. The method of claim 1 , wherein the contacting in b) and the adjusting in c) occur in a single reactor.4. The method of claim 3 , wherein the single reactor is a gas phase fluidized bed reactor or a single tank autoclave reactor or a loop reactor operating in slurry phase.5. The method of claim 1 , wherein the contacting in b) occurs in at least one first reactor and the adjusting in c) occurs in at least one second reactor.6. The method of claim 1 , wherein the contacting in b) occurs in at least one single tank autoclave reactor or ...