Catalyst precursors for ethylene polymerization based on novel mono- and bi-nuclear pyridylimine-type palladium(II) complexes with long straight chain alkyl substituents at the imino nitrogen

被引：61

作者：

Chen, R ^{[1
]}

Mapolie, SF ^{[1
]}

机构：

[1] Univ Western Cape, Dept Chem, ZA-7535 Bellville, South Africa

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2003年 / 193卷 / 1-2期

基金：

新加坡国家研究基金会;

关键词：

palladium; pyridylimine; polyethylene; bi-nuclear catalysts; ethylene polymerization;

D O I：

10.1016/S1381-1169(02)00456-9

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：

The synthesis and characterization of novel mono- and bi-nuclear pyridylimine-type palladium(II) complexes with long chain alkyl groups attached to the imino nitrogen are described. These complexes were evaluated as catalyst precursors for ethylene polymerization under relatively mild reaction conditions. Unlike N-aryl substituted pyridylimine-type analogues, these complexes when activated with methylaluminoxane (MAO) were capable of producing highly linear polyethylene with high molecular weights, the values of which can be tuned from 6 x 105 to I X 106 by varying polymerization temperature and the ratio of Al to Pd. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：33 / 40

页数：8

共 16 条

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