公开(公告)号：WO2008008835A3

公开(公告)日：2008-05-02

申请号：PCT/US2007073258

申请日：2007-07-11

Applicant: FINA TECHNOLOGY ,  COFFY TIM ,  GRAY STEVE ,  KNOEPPEL DAVID ,  CHEVILLARD CYRIL ,  RAUSCHER DAVID ,  CORLETO CARLOS ,  GUENTHER GERHARD ,  COLE BRIAN B ,  BIESERT STAN ,  BARRE VINCENT ,  CURTIS RUBY L ,  NGUYEN SON ,  CHILDRESS DANIELLE

Inventor： COFFY TIM ,  GRAY STEVE ,  KNOEPPEL DAVID ,  CHEVILLARD CYRIL ,  RAUSCHER DAVID ,  CORLETO CARLOS ,  GUENTHER GERHARD ,  COLE BRIAN B ,  BIESERT STAN ,  BARRE VINCENT ,  CURTIS RUBY L ,  NGUYEN SON ,  CHILDRESS DANIELLE

IPC: C08F8/00

CPC classification number: 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

Abstract: Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from.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.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 300kW.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 300kW.h/ton, and forming an article.

Abstract translation: 公开了双峰型齐格勒 - 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。 还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，并且在特定的 能量输入（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，和 通过测量挤出机的SEI和调节产量和/或齿轮吸入压力来控制聚乙烯的降解，使SEI小于300kW.h / ton，形成物品。

公开(公告)号：WO2008008835A2

公开(公告)日：2008-01-17

申请号：PCT/US2007/073258

申请日：2007-07-11

Applicant: FINA TECHNOLOGY, INC. ,  COFFY, Tim ,  GRAY, Steve ,  KNOEPPEL, David ,  CHEVILLARD, Cyril ,  RAUSCHER, David ,  CORLETO, Carlos ,  GUENTHER, Gerhard ,  COLE, Brian, B. ,  BIESERT, Stan ,  BARRE, Vincent ,  CURTIS, Ruby, L. ,  NGUYEN, Son ,  CHILDRESS, Danielle

Inventor： COFFY, Tim ,  GRAY, Steve ,  KNOEPPEL, David ,  CHEVILLARD, Cyril ,  RAUSCHER, David ,  CORLETO, Carlos ,  GUENTHER, Gerhard ,  COLE, Brian, B. ,  BIESERT, Stan ,  BARRE, Vincent ,  CURTIS, Ruby, L. ,  NGUYEN, Son ,  CHILDRESS, Danielle

IPC: C08F4/52

CPC classification number: 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

Abstract: Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from.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.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 300kW.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 300kW.h/ton, and forming an article.

Abstract translation: 公开了一种双峰Ziegler-Natta催化聚乙烯，其密度为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。还公开了一种制备管状制品的方法，其包括获得密度为930g / cc至0.960g / cc且分子量分布为10至25的双峰聚乙烯，以及 在比能量输入（SEI）小于300kW.h /吨的条件下处理聚乙烯，并且其中制品具有至少1500的PENT。还公开了用于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，以及通过测量挤出机的SEI并调整生产量和/或齿轮吸入压力使SEI小于300kW.h /吨并形成制品来控制聚乙烯的降解。