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题名: Isospecific polymerization of styrene with modified ziegler-type catalysts
作者: Sun, Q;  Fan, YH;  Liao, SJ;  Liu, J;  Wan, FD;  Xu, J
关键词: polymerization of styrene ;  supported titanium catalyst ;  stereospecificity
刊名: POLYMER
发表日期: 2001-04-01
卷: 42, 期:9, 页:4087-4090
收录类别: SCI
文章类型: Article
部门归属: 2009
项目归属: 204
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Polymer Science
研究领域[WOS]: Polymer Science
英文摘要: Effects of various kinds of additives as well as aging of the catalyst on the polymerization of styrene catalyzed by TiCl4/MgCl2-AlEt3 system have been studied. Experiments show that in toluene the isotacticity of polystyrene can be up to 83% for aged catalyst, whereas when the catalyst is not aged. non-stereospecific polymer is the main product. When PCl3 is used as an additive, the catalyst system gives high activity and isotacticity. The use of a mixture of AlEt3/H2O (1: 1 mole ratio) as a cocatalyst is also efficient. The catalyst [TiCl4-PCl3/MgCl2-AlEt3/H2O] displays high activity and product isotacticity (94%) with an average molecular weight up to 2 X 10(-6). When Co(acac)(3) is added to to [TiCl4/MgCl2-AlEt3] catalyst after it was aged, the isotacticity can be up to 97%. (C) 2001 Elsevier Science Ltd. All rights reserved.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000167050400017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/91953
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Liaoning Normal Univ, Dept Chem, Dalian 116029, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Organ Chem, Organomet Chem Lab, Shanghai 200032, Peoples R China

Recommended Citation:
Sun, Q,Fan, YH,Liao, SJ,et al. Isospecific polymerization of styrene with modified ziegler-type catalysts[J]. POLYMER,2001,42(9):4087-4090.
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