ETHYLENE-BRIDGED ANSA-ZIRCONOCENE DICHLORIDES FOR SYNDIOSPECIFIC PROPENE POLYMERIZATION

被引：15

作者：

RIEGER, B ^{[1
]}

REPO, T ^{[1
]}

JANY, G ^{[1
]}

机构：

[1] HELSINKI UNIV,DEPT CHEM,SF-00014 HELSINKI,FINLAND

来源：

POLYMER BULLETIN | 1995年 / 35卷 / 1-2期

关键词：

D O I：

10.1007/BF00312898

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Three ethylene-bridged unsymmetric zirconocene dichlorides bearing a cyclopentadienyl unit together with either a tetraphenylcyclopentadienyl- (8), a 7,9-diphenylcyclopent[a]acenaphtha-dienyl- (9) or a fluorenyl group (10) were used for propene polymerization after activation with methylalumoxane (MAO) at 30, 50, 70 and 80 degrees C. Whereas 8 is inactive at all, 9 produces atactic polypropene waxes with high activity. The polypropene products of 10 are syndiotactic with stereoregularities depending on the polymerization temperature as well as on monomer and on MAO concentration.

引用

页码：87 / 94

页数：8

共 13 条

[1] METALLOCENE POLYPROPYLENE STRUCTURAL RELATIONSHIPS - IMPLICATIONS ON POLYMERIZATION AND STEREOCHEMICAL CONTROL MECHANISMS [J].