High-molecular-weight atactic polypropylene from metallocene catalysts .1. Me(2)Si(9-flu)(2)ZrX(2) (X=Cl, Me)

被引：169

作者：

Resconi, L

Jones, RL

Rheingold, AL

Yap, GPA

机构：

[1] MONTELL POLYOLEFINS,CTR RES & DEV,ELKTON,MD 21921

[2] UNIV DELAWARE,DEPT CHEM,NEWARK,DE 19716

来源：

ORGANOMETALLICS | 1996年 / 15卷 / 03期

关键词：

D O I：

10.1021/om950197h

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis and characterization of the C-2v symmetric (dimethylsilanediylbis(9-fluorenyl))zirconium dichloride (I) and (dimethylsilanediylbis(9-fluorenyl))zirconium dimethyl (II) are reported. The crystal and molecular structure of II has been solved. The catalyst system I/MAO and II/MAO (MAO = methylalumoxane) produce high-molecular-weight atactic polypropylene at relatively high polymerization temperatures (<(M)over bar (w)> = (1-4) x 10(5) at 50 degrees C and Al/Zr = 1200) in good yields, providing a practical entry to this novel, elastomeric propylene homopolymer.

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页码：998 / 1005

页数：8

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