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Syndiotactic polymerization of styrene catalyzed by alkenyl‐substituted cyclopentadienyltitanium trichlorides
Author(s) -
Qian Xianmiao,
Huang Jiling,
Qian Yanlong,
Wang Chen
Publication year - 2003
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.439
Subject(s) - chemistry , methylaluminoxane , styrene , catalysis , substituent , polymerization , tacticity , medicinal chemistry , polymer chemistry , hydride , metallocene , copolymer , organic chemistry , hydrogen , polymer
CH 2 CHCH 2 CpTiCl 3 (1), CH 2 CHCH 2 CH 2 CpTiCl 3 (2) and CH 3 CH 2 CH 3 CpTiCl 3 (3) have been synthesized and characterized. The influence of the alkenyl substituent groups on the catalyst activities in the syndiotactic polymerization of styrene was investigated. The catalyst activities decreased in the order CH 2 CHCH 2 CH 2 CpTiCl 3 > CH 3 CH 2 CH 2 CH 2 CpTiCl 3 > CH 3 CH 2 CH 2 CpTiCl 3 > CH 2 CHCH 2 CpTiCl 3 (CpC 5 H 4 ). By using complex 1, the dependence of the activity on the concentration of methylaluminoxane, triisobutylaluminum and diisobutylaluminum hydride was investigated. Copyright © 2003 John Wiley & Sons, Ltd.