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.

引用

页码：29 / 33

页数：5

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