公开(公告)号：WO2012027173A1

公开(公告)日：2012-03-01

申请号：PCT/US2011/048128

申请日：2011-08-17

Applicant: MAVRIDIS, Harilaos ,  BERAN, Debra L. ,  GOLDEN, Jeffrey R. ,  PATER, Joachim T., M. ,  MORINI, Giampiero ,  EQUISTAR CHEMICALS, LP

Inventor： MAVRIDIS, Harilaos ,  BERAN, Debra L. ,  GOLDEN, Jeffrey R. ,  PATER, Joachim T., M. ,  MORINI, Giampiero

IPC: C08F210/16 ,  C08F4/649 ,  C08F4/654 ,  C08J5/18

CPC classification number: C08F210/16 ,  C08J5/18 ,  C08J2323/06 ,  C08F210/08 ,  C08F2500/12 ,  C08F2500/26 ,  C08F210/14 ,  C08F4/6494 ,  C08F4/6543 ,  C08F4/651

Abstract: Disclosed is a method for making LLDPE grades having different xylene solubles or hexane extractables with the same Ziegler-Natta catalyst by varying the amount of alkylaluminum used for polymerization. The method comprises copolymerizing ethylene with a C?3-10#191 a-olefin in the presence of a Ziefler-Natta catalyst, an alkylaluminum, and an electron donor; determining the dependency of the xylene solubles or hexane extractables on the alkylaluminum/electron donor ratio; and adjusting the alkylaluminum/electron donor ratio to achieve a desired xylene solubles or hexane extractables.

Abstract translation: 公开了通过改变用于聚合的烷基铝的量，通过相同的齐格勒 - 纳塔催化剂制备具有不同的二甲苯可溶物或己烷可萃取物的LLDPE级别的方法。 该方法包括在Ziefler-Natta催化剂，烷基铝和电子给体存在下使乙烯与C 3 3-10＃191α-烯烃共聚合; 确定二甲苯可溶物或己烷可萃取物对烷基铝/电子给体比的依赖性; 并调节烷基铝/电子给体比以获得所需的二甲苯可溶物或己烷可萃取物。

公开(公告)号：WO2012027171A1

公开(公告)日：2012-03-01

申请号：PCT/US2011/048116

申请日：2011-08-17

Applicant: MAVRIDIS, Harilaos ,  BERAN, Debra L. ,  GOLDEN, Jeffrey R. ,  PATER, Joachim T. ,  MORINI, Giampiero ,  EQUISTAR CHEMICALS, LP

Inventor： MAVRIDIS, Harilaos ,  BERAN, Debra L. ,  GOLDEN, Jeffrey R. ,  PATER, Joachim T. ,  MORINI, Giampiero

IPC: C08F210/16 ,  C08F4/651 ,  C08F4/654

CPC classification number: C08F210/16 ,  C08F210/08 ,  C08F2500/12 ,  C08F2500/26 ,  C08F4/651 ,  C08F4/6543 ,  C08F4/6545

Abstract: Disclosed is a process for making a linear low density polyethylene (LLDPE) having low gels. The process comprises copolymerizing ethylene with one or more C 3-10 α-olefins to produce an LLDPE resin which has a gel defect area less than 25 ppm. The copolymerization is performed in the presence of a Ziegler-Nattta catalyst which comprises an MgCI 2 support, a Ti(IV) complex, and a cyclic ether as an internal electron donor. The Ziegler-Natta catalyst has a Mg/Ti molar ration greater than or equal to 7.

Abstract translation: 公开了一种制备具有低凝胶的线性低密度聚乙烯（LLDPE）的方法。 该方法包括使乙烯与一种或多种C 3-10α-烯烃共聚以制备凝胶缺陷面积小于25ppm的LLDPE树脂。 共聚反应在包含MgCl 2载体，Ti（IV）络合物和环醚作为内电子给体的齐格勒 - 纳塔催化剂存在下进行。 齐格勒 - 纳塔催化剂具有大于或等于7的Mg / Ti摩尔比。