Isotactic polymerization of propylene with zirconocene catalysts in the presence of a Lewis base

被引：3
|
作者：
Deng, H [1 ]
Soga, K [1 ]
机构：
[1] JAPAN ADV INST SCI & TECHNOL,SCH MAT SCI,TATSUNOKUCHI,ISHIKAWA 92312,JAPAN
来源：
POLYMER BULLETIN | 1996年 / 37卷 / 01期
关键词：
D O I：
10.1007/BF00313815
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Polymerization of propylene was carried out at 0 degrees C in the presence of methyl methacrylate(MMA) or ethyl benzoate(EB) using rac-Et(Ind)(2)ZrMe(2) or rac-Me(2)Si(Ind)(2)ZrMe(2)/Ph(3)CB(C6F5)(4) as catalyst, which resulted in highly isotactic poly(propylene) with [mmmm] > 98%, T-m = 160-161 degrees C and very few 1,3- or 2,1 regioirregular units. With the use of an achiral zirconocene Cp(2)ZrMe(2), a polymer with T-m = 139 degrees C was resulted as well. Base on these experimental fact that the zirconocene can form a C-1-symmetrical complex with a Lewis base.
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收藏
页码：29 / 33
页数：5
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