Mechanistic aspects of chain propagation and transfer for metallocene-catalyzed olefin polymerization

被引：0

作者：

Chirik, Paul J. ^{[1
]}

Bercaw, John E. ^{[1
]}

机构：

[1] Arnold Mabel Labs. Chem. Synthesis, California Institute of Technology, Pasadena, CA 91106, United States

来源：

American Chemical Society, Polymer Preprints, Division of Polymer Chemistry | 2000年 / 41卷 / 01期

关键词：

Chain propagation - Cyclopentadienyl - Metallocenes;

D O I：

暂无

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学科分类号：

摘要：

Olefin insertion into a transition metal-hydride bond and its microscopic reverse, β-hydrogen elimination from a metal alkyl constitutive key steps of chain growth and termination in olefin polymerization, is discussed. The relative rates of chain growth and termination determine the chain length of the resulting polymer and many important polyolefin properties. A program aimed at elucidating the relative rates of these fundamental processes is initiated. These investigations revealed that cyclopentadienyl substitution and the nature of the olefin (or alkyl) have a considerable effect on the rates of insertion and elimination.

引用

页码：393 / 394