Propylene polymerization with bis(phenoxy-imine) group-4 catalysts using iBu3Al/Ph3CB(C6F5)4 as a cocatalyst

被引：83

作者：

Saito, J

Onda, M

Matsui, S

Mitani, M

Furuyama, R

Tanaka, H

Fujita, T

机构：

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

[2] Mitsui Chem Anal & Consulting Serv Inc, Sodegaura, Chiba 2990265, Japan

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2002年 / 23卷 / 18期

关键词：

FI catalysts; isotactic; phenoxy-imine ligands; polyolefins; poly(propylene) (PP);

D O I：

10.1002/marc.200290005

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The catalytic behaviour of three bis(phenoxy) group-4 transition-metal complexes (M=Ti, Zr, Hf), with (Bu3AlCB)-Bu-i(C6F5)(4) cocatalyst systems towards propylene polymerization was investigated under atmospheric pressure at 25degreesC. The Ti complex produced ultrahigh-molecular-weightatactic poly(propylene), whereas Zr and Hf complexes formed high-molecular-weight isotactic poly(propylene)s via a site-control mechanism. The isotactic poly(propylene) obtained with the Hf complex displayed a high melting temperature of 123.8degreesC.

引用

页码：1118 / 1123

页数：6

共 65 条

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