THE ROLE OF NONCOORDINATING ANIONS IN HOMOGENEOUS OLEFIN POLYMERIZATION

被引:92
作者
SIEDLE, AR
LAMANNA, WM
NEWMARK, RA
STEVENS, J
RICHARDSON, DE
RYAN, M
机构
[1] THREE M CO,CTR COMPUTAT SCI,ST PAUL,MN 55144
[2] UNIV FLORIDA,DEPT CHEM,GAINESVILLE,FL 32611
来源
MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1993年 / 66卷
关键词
D O I
10.1002/masy.19930660119
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
We present an overview of homogeneous olefin polymerization catalysts in which chain initiation and propagation involves a metallocenium ion (e.g. CP2ZrMe+) that can be produced by equilibrium or irreversible CH3-transfer. The Kaminsky catalyst is an example of the former. Complexes of (C6F5)3B with water, alcohols, mercaptans, silanols and oximes are strong acids which can protonate dialkylmetallocenes to produce weakly-coordinated metallocenium salts that are hydrocarbon soluble and which produce high molecular weight poly-1-olefins. Polymer molecular weight is correlated with the steric and electronic effects of the ligands attached to the metal.
引用
收藏
页码:215 / 224
页数:10
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