High cis-1,4 polyisoprene or cis-1,4/3,4 binary polyisoprene synthesized using 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides

doi:10.1002/pi.4490

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	High cis-1,4 polyisoprene or cis-1,4/3,4 binary polyisoprene synthesized using 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides
	He, Aihua 1; Wang, Geng 1; Zhao, Weizhen 2,3; Jiang, Xiubo 1; Yao, Wei 1; Sun, Wen-Hua2,3
刊名	POLYMER INTERNATIONAL
	2013-12-01
卷号	62 期号:12 页码:1758-1766
关键词	Cobalt Pre-catalyst Late Transition Metal Complexes Cis-1 Cis-1 4 Polyisoprenes 4/3 4 Binary Polyisoprenes
ISSN号	0959-8103
DOI	10.1002/pi.4490
英文摘要	Polyisoprene (PI) with a high content of cis-1,4 (up to 95%) or cis-1,4/3,4 binary structures was synthesized using a cobalt system in toluene. The cobalt system, which exhibited high activities (up to 3.50x10(6) g PI(mol Co)(-1)h(-1)), contained a series of 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides activated with ethylaluminium sesquichloride. The nature of the ligands and the reaction conditions significantly affected both the catalytic performance of the cobalt complexes as well as the structures of the resultant PI. The stereospecific polymerization of isoprene could be tuned via changing either the co-catalyst or solvent: for example, increased content of 3,4 PI (up to 36.6%) was achievable in heptane in the presence of diethylaluminium chloride. Sequence distribution analysis by C-13 NMR spectroscopy indicated that most 3,4 units occurred randomly in the PI chains. (c) 2013 Society of Chemical Industry
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000326959500012
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/54619]
专题	中国科学院化学研究所
通讯作者	He, Aihua
作者单位	1.Qingdao Univ Sci & Technol, Sch Polymer Sci & Engn, Key Lab Rubber Plast, Minist Educ,Shandong Prov Key Lab Rubber Plast, Qingdao 266042, Peoples R China 2.Chinese Acad Sci, Key Lab Engn Plast, Inst Chem, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	He, Aihua,Wang, Geng,Zhao, Weizhen,et al. High cis-1,4 polyisoprene or cis-1,4/3,4 binary polyisoprene synthesized using 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides[J]. POLYMER INTERNATIONAL,2013,62(12):1758-1766.
APA	He, Aihua,Wang, Geng,Zhao, Weizhen,Jiang, Xiubo,Yao, Wei,&Sun, Wen-Hua.(2013).High cis-1,4 polyisoprene or cis-1,4/3,4 binary polyisoprene synthesized using 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides.POLYMER INTERNATIONAL,62(12),1758-1766.
MLA	He, Aihua,et al."High cis-1,4 polyisoprene or cis-1,4/3,4 binary polyisoprene synthesized using 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides".POLYMER INTERNATIONAL 62.12(2013):1758-1766.