公开(公告)号：US20080051538A1

公开(公告)日：2008-02-28

申请号：US11774255

申请日：2007-07-06

申请人： TIM COFFY ,  Steven Gray ,  David Knoeppel ,  Cyril Chevillard ,  David Rauscher ,  Carlos Corleto ,  Gerhard Guenther ,  Brian Cole ,  Stan Beisert ,  Vincent Barre ,  Ruby Curtis ,  Son Nguyen ,  Danielle Childress

发明人： TIM COFFY ,  Steven Gray ,  David Knoeppel ,  Cyril Chevillard ,  David Rauscher ,  Carlos Corleto ,  Gerhard Guenther ,  Brian Cole ,  Stan Beisert ,  Vincent Barre ,  Ruby Curtis ,  Son Nguyen ,  Danielle Childress

IPC分类号： C08F4/52

CPC分类号： C08F10/00 ,  B29C48/92 ,  B29C2948/922 ,  B29C2948/924 ,  B29C2948/92514 ,  B29C2948/92542 ,  B29C2948/92695 ,  B29C2948/92714 ,  B29C2948/92895 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F2400/02 ,  C08F4/6567 ,  C08F4/6557 ,  C08F2/001 ,  C08F2500/07 ,  C08F2500/05 ,  C08F2500/12 ,  C08F210/08

摘要： Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from 0.930 g/cc to 0.960 g/cc, and a molecular weight distribution of from 10 to 25, wherein an article formed therefrom has a PENT of at least 1500. Also disclosed is a method of preparing a tubular article including obtaining a bimodal polyethylene having a density of from 0.930 g/cc to 0.960 g/cc and a molecular weight distribution of from 10 to 25, and processing the polyethylene under conditions where a specific energy input (SEI) is less than 300 kW.h/ton, and wherein the article has a PENT of at least 1500. Further disclosed is a method for controlling the degradation of polyethylene including polymerizing ethylene monomer, recovering polyethylene, extruding the polyethylene, and controlling the degradation of polyethylene by measuring the SEI to the extruder and adjusting throughput and/or gear suction pressure keep SEI less than 300 kW.h/ton, and forming an article.

摘要翻译： 公开了一种双峰型齐格勒 - 纳塔催化聚乙烯，其密度为0.930g / cc至0.960g / cc，分子量分布为10至25，其中由其形成的制品具有至少1500的PENT。另外 公开了一种制备管状制品的方法，包括获得密度为0.930g / cc至0.960g / cc和分子量分布为10至25的双峰聚乙烯，并在特定能量输入条件下处理聚乙烯 （SEI）小于300kW.h / ton，并且其中该制品具有至少1500的PENT。还公开了一种控制聚乙烯降解的方法，包括聚合乙烯单体，回收聚乙烯，挤出聚乙烯和控制 通过测量SEI到挤出机并调节产量和/或齿轮吸入压力，聚乙烯的降解使SEI小于300kW.h / ton，形成物品。

公开(公告)号：US08110644B2

公开(公告)日：2012-02-07

申请号：US12777553

申请日：2010-05-11

申请人： Tim Coffy ,  Steven Gray ,  David Knoeppel ,  Cyril Chevillard ,  David Rauscher ,  Carlos Corleto ,  Gerhard Guenther ,  Brian Cole ,  Stan Biesert ,  Vincent Barre ,  Ruby Curtis ,  Son Nguyen ,  Danielle Childress

发明人： Tim Coffy ,  Steven Gray ,  David Knoeppel ,  Cyril Chevillard ,  David Rauscher ,  Carlos Corleto ,  Gerhard Guenther ,  Brian Cole ,  Stan Biesert ,  Vincent Barre ,  Ruby Curtis ,  Son Nguyen ,  Danielle Childress

IPC分类号： C08F110/02 ,  C08F4/42

CPC分类号： C08F10/00 ,  B29C47/92 ,  B29C2947/922 ,  B29C2947/924 ,  B29C2947/92514 ,  B29C2947/92542 ,  B29C2947/92695 ,  B29C2947/92714 ,  B29C2947/92895 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F2400/02 ,  C08F4/6567 ,  C08F4/6557 ,  C08F2/001 ,  C08F2500/07 ,  C08F2500/05 ,  C08F2500/12 ,  C08F210/08

摘要： Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from 0.930 g/cc to 0.960 g/cc, and a molecular weight distribution of from 10 to 25, wherein an article formed therefrom has a PENT of at least 1500. Also disclosed is a method of preparing a tubular article including obtaining a bimodal polyethylene having a density of from 0.930 g/cc to 0.960 g/cc and a molecular weight distribution of from 10 to 25, and processing the polyethylene under conditions where a specific energy input (SEI) is less than 300 kW·h/ton, and wherein the article has a PENT of at least 1500. Further disclosed is a method for controlling the degradation of polyethylene including polymerizing ethylene monomer, recovering polyethylene, extruding the polyethylene, and controlling the degradation of polyethylene by measuring the SEI to the extruder and adjusting throughput and/or gear suction pressure keep SEI less than 300 kW·h/ton, and forming an article.

摘要翻译： 公开了一种双峰型齐格勒 - 纳塔催化聚乙烯，其密度为0.930g / cc至0.960g / cc，分子量分布为10至25，其中由其形成的制品具有至少1500的PENT。另外 公开了一种制备管状制品的方法，包括获得密度为0.930g / cc至0.960g / cc和分子量分布为10至25的双峰聚乙烯，并在特定能量输入条件下处理聚乙烯 （SEI）小于300kW·h / ton，其中制品的PENT为至少1500.另外公开了一种控制聚乙烯降解的方法，包括聚合乙烯单体，回收聚乙烯，挤出聚乙烯，控制 通过测量SEI到挤出机并调整产量和/或齿轮吸入压力，聚乙烯的降解使SEI小于300kW·h / ton，形成物品。

公开(公告)号：US20100081767A1

公开(公告)日：2010-04-01

申请号：US12243315

申请日：2008-10-01

申请人： Michael McLeod ,  John Ashbaugh ,  Cyril Chevillard ,  Gerhard Guenthar ,  Ruby Curtis ,  Jay Nguyen ,  Juan Aguirre ,  Raleigh McBride ,  Ben Hicks

发明人： Michael McLeod ,  John Ashbaugh ,  Cyril Chevillard ,  Gerhard Guenthar ,  Ruby Curtis ,  Jay Nguyen ,  Juan Aguirre ,  Raleigh McBride ,  Ben Hicks

IPC分类号： C08F10/02 ,  C08L23/06

CPC分类号： C08K5/0083 ,  C08L23/0815 ,  C08L23/06

摘要： Polymer articles and processes of forming the same are described herein. The processes generally include providing an ethylene based polymer, blending the ethylene based polymer with a modifier to form modified polyethylene and forming the modified polyethylene into a polymer article, wherein the polymer article exhibits a haze that is at least about 10% less than a polymer article prepared with a similarly modified polyethylene.

摘要翻译： 本文描述了聚合物制品及其形成方法。 该方法通常包括提供基于乙烯的聚合物，将基于乙烯的聚合物与改性剂共混以形成改性的聚乙烯并将改性的聚乙烯形成聚合物制品，其中聚合物制品的雾度比聚合物低至少约10％ 用类似改性聚乙烯制备的制品。