Study on chain end structures of polypropylenes prepared with different symmetrical metallocene catalysts

被引：25

作者：

Kawahara, N

Kojoh, S

Matsuo, S

Kaneko, H

Matsugi, T

Toda, Y

Mizuno, A

Kashiwa, N

机构：

[1] Mitsui Chem Inc, R&D Ctr, Sodegaura, Chiba 2990265, Japan

[2] Mitsui Chem Anal & Consulting Serv Inc, Anal Res Lab, Waki, Yamaguchi 7400061, Japan

来源：

POLYMER | 2004年 / 45卷 / 09期

关键词：

metallocene catalyst; polypropylene; analytical characterization;

D O I：

10.1016/j.polymer.2004.02.055

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Propylene homopolymerizations were conducted by using three kinds of metallocenes: Cp2ZrCl2, En(Ind)(2)ZrCl2 and iPr(Cp)(Flu)ZrCl2, all of which were activated with methylaluminoxane. Detailed NMR analyses of the chain ends in the resulting polymers were carried out to discuss the chain end structures of the polypropylenes and the mechanism of polymerization. The characteristic of each metallocene for the mechanism of polymerization was also described. (C) 2004 Elsevier Ltd. All rights reserved.

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收藏

页码：2883 / 2888

页数：6

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