Binary metallocene supported catalyst for propylene polymerization

被引：19
|
作者：
Marques, MDV [1 ]
Pombo, CC [1 ]
Silva, RA [1 ]
Conte, A [1 ]
机构：
[1] Univ Fed Rio de Janeiro, Inst Macromol Prof Eloisa Mano, BR-21945970 Rio De Janeiro, Brazil
来源：
EUROPEAN POLYMER JOURNAL | 2003年 / 39卷 / 03期
关键词：
polypropylene; metallocene; supported catalyst;
D O I：
10.1016/S0014-3057(02)00269-0
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 binary silica supported catalyst system comprising the Cp2ZrCl2 and SiMe2(Ind)(2)ZrCl2 metallocene compounds was prepared with different immobilization methods and evaluated at different propylene polymerization conditions. The performance results of the homogeneous isolated catalysts and also the homogeneous catalyst mixture were also included for comparison. High activities were obtained with the supported systems and the molecular weight of the produced polypropylene was invariably higher than that obtained using the homogeneous precursor. (C) 2002 Elsevier Science Ltd. All rights reserved.
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页码：561 / 567
页数：7
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