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Novel metallocene catalysts for syndiotactic polystyrene |
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| Authors: | Yi-Yeol Lyu Jin-Heong Yim Sang-Yun Lee Ik-Mo Lee |
| Institution: | a Samsung Advanced Institute of Technology, San 14-1, Nongseo-ri, Kiheung-eup, Yongin-shi, Kyungki-do 449-712, South Korea b Department of Advanced Materials, Sung Kyun Kwan University, 300 Chunchun-dong, Jangan-gu, Suwon, Kyunggi-do 440-746, South Korea c Department of Chemistry, Inha University, 253 Yonghyun-dong, Nam-ku, Inchon 402-751, South Korea |
| Abstract: | 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. |
| Keywords: | Titanium metallocene complexes Siloxy groups Syndiotactic polystyrene Bimetallic titanocene complexes |
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