New polymers by copolymerization of ethylene and norbornene with metallocene catalysts

被引：24
|
作者：
Kaminsky, W [1 ]
Tran, PD [1 ]
Werner, R [1 ]
机构：
[1] Univ Hamburg, Inst Tech & Makromol Chem, D-20146 Hamburg, Germany
来源：
MACROMOLECULAR SYMPOSIA | 2004年 / 213卷
关键词：
COC; ethene-norbornene copolymers; metallocene catalysts; olefin polymerization; pentalene-zirconocene complexes;
D O I：
10.1002/masy.200450911
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
To increase the thermal stability of metallocene-methylaluminoxane catalysts. pentalene bridged zirconocenes and a constrained geometry catalyst were used for the copolymerisation of ethene and norbomene. The constrained geometry catalyst is stable in solution up to 90 degreesC. Surprisingly the molecular weight of the copolymers increases with higher incorporation rates of norbomene. Glass transition temperatures of 120 degreesC are reached. The microstructure of the cyclic olefin copolymers material is more alternating.
引用
收藏
页码：101 / 108
页数：8
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