Highly trans-1,4-specific polymerization of 1,3-butadiene catalyzed by [2,6-bis{(4S)(-)-isopropyl-2-oxazolin-2-yl} pyridine]chromium complex activated with modified methylaluminoxane

被引：20
作者：
Nakayama, Yuushou [1 ]
Sogo, Kenji [1 ]
Cai, Zhengguo [1 ]
Yasuda, Hajime [1 ]
Shiono, Takeshi [1 ]
机构：
[1] Hiroshima Univ, Dept Appl Chem, Grad Sch Engn, Higashihiroshima 7398527, Japan
来源：
POLYMER INTERNATIONAL | 2011年 / 60卷 / 04期
关键词：
bis(pyrazolyl) pyridine; chromium; trans-1,4-poly(1,3-butadiene); polymerization; ETHYLENE POLYMERIZATION; CHROMIUM CATALYSTS; CHROMOCENE CATALYSTS; RHODIUM SALTS; BUTADIENE; BEHAVIOR; LIGANDS; COPOLYMERIZATION; POLYBUTADIENE; ALUMINIUM;
D O I：
10.1002/pi.3008
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Chromium complexes with N,N,N-tridentate ligands, LCrCl(3) (L = 2,6-bis{(4S)-(-)-isopropyl-2-oxazolin-2-yl} pyridine (1), 2,2': 6',2 ''-terpyridine (2), and 4,4',4 ''-tri-tert-butyl-2,2' : 6',2 '' -terpyridine (3)), were prepared. The structures of 1 and 2 were determined by X-ray crystallography. Upon activation with modified methylaluminoxane (MMAO), 1 catalyzed the polymerization of 1,3-butadiene, while 2 and 3 was inactive. The obtained poly(1,3-butadiene) obtained with 1-MMAO was found to have completely trans-1,4 structure. The 1-MMAO system also showed catalytic activity for the polymerization of isoprene to give polyisoprene with trans-1,4 (68%) and cis-1,4 (32%) structure. (C) 2011 Society of Chemical Industry
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页码：692 / 697
页数：6
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