Novel metallocene catalysts for syndiotactic polystyrene

A series of new half-metallocene complexes of titanium containing siloxy ligands and a new bimetallic titanocene complex (compound 1) with a crystallographically determined structure have been prepared. When activated with methylaluminoxane (MAO), they showed high activities toward polymerization of...

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Bibliographic Details
Published in:European polymer journal 2004-06, Vol.40 (6), p.1051-1056
Main Authors: Lyu, Yi-Yeol, Byun, Younghun, Yim, Jin-Heong, Chang, Seok, Lee, Sang-Yun, Pu, Lyong Sun, Lee, Ik-Mo
Format: Article
Language:English
Subjects:
Applied sciences
Bimetallic titanocene complexes
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymerization
Preparation, kinetics, thermodynamics, mechanism and catalysts
Siloxy groups
Syndiotactic polystyrene
Titanium metallocene complexes
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Summary:A series of new half-metallocene complexes of titanium containing siloxy ligands and a new bimetallic titanocene complex (compound 1) with a crystallographically determined structure have been prepared. When activated with methylaluminoxane (MAO), they showed high activities toward polymerization of styrene with high syndiotacticity. Origin of the high activity and syndiotacticity found in this work was investigated systematically by comparison with polymerization results using other known complexes.
ISSN:0014-3057
1873-1945
DOI:10.1016/j.eurpolymj.2003.12.012