POLYMERIZATION OF PROPYLENE USING SUPPORTED, CHIRAL, ANSA-METALLOCENE CATALYSTS - PRODUCTION OF POLYPROPYLENE WITH NARROW MOLECULAR-WEIGHT DISTRIBUTIONS

被引：192
作者：
COLLINS, S
KELLY, WM
HOLDEN, DA
机构：
[1] Department of Chemistry, University of Waterloo, Waterloo, Ontario
来源：
MACROMOLECULES | 1992年 / 25卷 / 06期
关键词：
D O I：
10.1021/ma00032a025
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 chiral ansa-metallocenes 1,2-ethylenebis(eta(5)-1-indenyl)- and 1,2-ethylenebis(eta(5)-1-tetrahydroindenyl)zirconium dichloride (1 and 2, respectively) can be supported on partially dehydroxylated SiO2 and Al2O3, and these supported systems can be used to polymerize propylene in the presence of methylaluminoxane. The most active supported systems were derived from partially dehydroxylated SiO2 or Al2O3 that had been pretreated with excess trimethylaluminum. The properties of the polypropylene produced are essentially indistinguishable from that produced under homogeneous conditions using these same catalysts.
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页码：1780 / 1785
页数：6
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