Novel Dinuclear Half-Titanocene-Producing Styrene/Ethylene Copolymers Containing Syndiotactic Styrene/Styrene Sequences

被引：9
作者：
Yoon, Seung Woong [1 ]
Kim, Youngjo [2 ]
Kim, Seong Kyun [1 ]
Kim, Sang Youl [1 ]
Do, Youngkyu [1 ]
Park, Sungjin [3 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Chem, Taejon 305701, South Korea
[2] Chungbuk Natl Univ, Dept Chem, Cheongju 361763, South Korea
[3] Inha Univ, Dept Chem, Inchon 402751, South Korea
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2011年 / 212卷 / 08期
基金：
新加坡国家研究基金会;
关键词：
copolymerization; ethylene; metallocene catalysts; styrene; titanium; SYNDIOSPECIFIC STYRENE POLYMERIZATION; ETHYLENE/STYRENE COPOLYMERIZATION; MOLECULAR-STRUCTURE; CRYSTAL-STRUCTURE; COMPLEXES; HYDROLYSIS; LACTIDE;
D O I：
10.1002/macp.201000655
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The synthesis and characterization of a novel titanium complex, {[C-5(CH3)(5)]ClTi}(2)O2C2(CH3)(4)(mu-O) (2), which has two titanium metal centers linked by heteroleptic bridges, oxo and pinacolato, is described. The compound shows good stability under air. The 2/modified methylalumoxane (MMAO) catalytic system produces ethylene/styrene interpolymers (ESIs) containing syndiotactic styrene/styrene sequences (syndiotactic polystyrene blocks) with a high styrene content. To the best of our knowledge, this is the first example of a group-4-based catalytic system producing an ESI with syndiotactic polystyrene blocks.
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收藏
页码：785 / 789
页数：5
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