C2-bridged metallocene dichloride complexes of the types (C13H8-CH2CHR-C9H6-nR′n)ZrCl2 and (C13H8-CH2CHR-C13H8)MCl2 (n = 0, 1; R = H, alkenyl; R′ = alkenyl, benzyl; M = Zr, Hf) as self-immobilizing catalyst precursors for ethylene polymerization

被引：43

作者：

Alt, HG ^{[1
]}

Jung, M ^{[1
]}

机构：

[1] Univ Bayreuth, Anorgan Chem Lab, D-95440 Bayreuth, Germany

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1999年 / 580卷 / 01期

关键词：

catalysis; polymerization; zirconium; metallocene complexes;

D O I：

10.1016/S0022-328X(98)00736-0

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A total of 15 C-2-bridged fluorenylidene indenylidene and bis(fluorenylidene) metal dichloride complexes (metal = Zr, Hf) and the corresponding ligand precursors have been prepared and characterized. omega-Alkenyl substituents with various chain lengths in the C-2-bridge or in position 3 of the indenylidene moiety have an impact on the polymerization activity of the catalysts and the molecular weights of the produced polyethylenes. These omega-alkenyl substituents cause 'self-immobilization' due to their incorporation into the backbone of a growing polymer chain providing heterogeneous catalyst systems. (C) 1999 Published by Elsevier Science S.A. All rights reserved.

引用

页码：1 / 16

页数：16

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