ansa-metallocene complexes of type (C13H8-SiR2-C9H6-nR′n)ZrCl2 (n = 0, 1, R = Me, Ph, alkenyl, R′ = alkyl, alkenyl):: self-immobilizing catalysts precursors for ethylene polymerization

被引：34

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 | 1998年 / 562卷 / 02期

关键词：

catalysis; zirconium; polymerization; metallocene complexes; self immobilization;

D O I：

10.1016/S0022-328X(98)00538-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Twenty-four (19 new) ansa-metallocene complexes of the type (C13H8-SiR2-C9H6-nRn')ZrCl2 (n = 0, 1; R = Me, Ph, alkenyl; R' = alkyl, alkenyl) have been synthezised, characterized and tested for catalytic ethylene polymerization after activation with methylaluminoxane (MAO). The substituents R in the bridge and the substituents R' in the 3-position of the indenylidene moiety have an influence on the activity of the catalysts and the molecular weights of the formed polymers. The omega-alkenyl substituents R and R' allow the copolymerization of the corresponding catalysts with the monomer upon activation to give heterogeneous catalysts by self-immobilization processes.

引用

页码：229 / 253

页数：25

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