Homopolymerizations and random copolymerizations of olefins with amino-substituted cyclopentadienylchromium complexes

被引：21

作者：

Ogata, K ^{[1
]}

Nakayama, Y ^{[1
]}

Yasuda, H ^{[1
]}

机构：

[1] Hiroshima Univ, Grad Sch Engn, Dept Appl Chem, Higashihiroshima 7398527, Japan

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2002年 / 40卷 / 16期

关键词：

organochromium complexes; polyethylene (PE); polyethylene-co-propylene); polyethylene-co-1-hexene); polypropylene-co-1-hexene); initiator; polyolefins; copolymerization;

D O I：

10.1002/pola.10365

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

1-(2 N,N-Dimethylaminoethyl)-2,3,4,5-tetramethylcyclopentadienyl-chromium dichloride (1), (2-N,N-dimethylaminoethyl)cyclopentadienylchromium dichloride (6), and (2-N,N-dimethylaminoethyl)indenylchromium dichloride (7) in the presence of modified methylaluminoxane exhibit high catalytic activities for the polymerization of ethylene with random copolymerizations of ethylene with propylene, ethylene with 1-hexene, and propylene with 1-hexene. These initiators conduct polymerizations to give high molecular weight polymers with low polydispersities. However, the stereo-regularities are very poor in these reactions. (C) 2002 Wiley Periodicals, Inc.

引用

页码：2759 / 2771

页数：13

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