PROPYLENE POLYMERIZATIONS WITH METALLOCENE/TEAL/TRITYL TETRAKIS (PEUTAFLUOROPHENYL) ALUMINATE MIXTURES

被引：11

作者：

EWEN, JA

机构：

[1] Catalyst Research Corporation, Houston, Texas 77058

来源：

CATALYST DESIGN FOR TAILOR-MADE POLYOLEFINS | 1994年 / 89卷

关键词：

D O I：

10.1016/S0167-2991(08)63054-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Propylene polymerizations with dichlorometallocenes as pre-catalysts were investigated with trityl tetrakis (pentafluorophenyl) aluminate (Al-F20) as a synthetic reagent for the active zirconium monoalkyl cations. Triethylaluminium served as an alkylating agent for Zr and as a convenient water scavenger. Isospecific (Et[Ind]Zr-2(R)(+)) and syndiospecific (Me(2)C[CpFlu]Zr(R)+) cations paired with Al-F20 are significantly more stereospecific than the corresponding systems with boron and methylamluninoxane counter anions under certain polymerization conditions. The Al-F20 containing catalysts are less active than the B-F20 systems.

引用

页码：405 / 410

页数：6

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