Effect of free trimethylaluminum content in methylaluminoxane on performances of bis(salicylaldiminate)nickel(II)-based catalysts for ethylene polymerization

被引：11

作者：

Carlini, C ^{[1
]}

De Luise, V ^{[1
]}

Fernandes, EG ^{[1
]}

Martinelli, M ^{[1
]}

Galletti, AMR ^{[1
]}

Sbrana, G ^{[1
]}

机构：

[1] Univ Pisa, Dipartimento Chim & Chim Ind, I-56126 Pisa, Italy

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2005年 / 26卷 / 10期

关键词：

bis[3,5-dinitro-N-(2,6-iisopropylphenyl) salicylaidiminate]nickel(II); 2,6-di-tert-butylphenol; methylaluminoxane; organometallic catalysts; polyethylene (PE); trimethylaluminum;

D O I：

10.1002/marc.200500005

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The performances of ethylene polymerization catalysts based on III and commercial methylaluminoxane were investigated by reducing the content of free trimethylaluminum in methylaluminoxane by its reaction with 2,6-di-tert-butylphenol. This allowed optimization of the formulation of the catalyst, affording a high-molecular-weight linear polyethylene (PE) with a productivity [(1900 kg of PE/(mol of Ni x h)], ten-fold higher than that previously achieved for the same system adopting commercial methylaluminoxane not pre-treated with the above phenol derivative.

引用

页码：808 / 812

页数：5

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