Polymerization of ethylene by chromium acetylacetonate/methylaluminoxane catalyst system

被引：10

作者：

Coutinho, FMB

Iwamoto, RK

Costa, MAS

de Santa Maria, LC

机构：

[1] Univ Fed Rio de Janeiro, Inst Macromol Prof Eloisa Mano, BR-21945970 Rio De Janeiro, RJ, Brazil

[2] UERJ, Dept Proc Ind, BR-20559900 Rio De Janeiro, RJ, Brazil

[3] UERJ, Dept Quim Organ, Inst Quim, BR-20559900 Rio De Janeiro, RJ, Brazil

来源：

POLYMER BULLETIN | 1998年 / 40卷 / 06期

关键词：

D O I：

10.1007/s002890050310

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 present paper deals with polymerization of ethylene by chromium acetylacetonate Cr(acac)(3) - activated by alkylaluminium, e.g. Al(C2H5)(3) or Al(i-C5H9)(3), or methylaluminoxane (MAO). The influence of polymerization parameters on catalyst performance, such as Al/Cr mole ratio, temperature, aging time, type of cocatalyst, was investigated. High activities were obtained only when MAO was the cocatalyst. The polymers were characterized by size exclusion chromatography (SEC) and differential scanning calorimetry (DSC) analyses.

引用

页码：695 / 700

页数：6

共 7 条

[1] Effect of reaction parameters on the polymerization of methyl methacrylate with nickel acetylacetonate methylaluminoxane [J].