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US4253984A Catalyst component for use in the polymerization of .alpha.-olefins and a method of using the same 失效
用于α-烯烃聚合的催化剂组分及其使用方法

Catalyst component for use in the polymerization of .alpha.-olefins and
a method of using the same
摘要:
A supported titanium catalyst component is produced by cogrinding in the presence of an ethylenically unsaturated hydrocarbon an organo aluminum catalyst component with a supported titanium (IV) halide on a magnesium halide until the intensity of the 14.8.degree. and 30.2.degree. x-ray diffraction peak of magnesium halide are reduced in intensity. The resulting supported titanium halide catalyst component, when employed with an organo aluminum catalyst component to form a catalyst system is highly useful for the stereoregular polymerization of .alpha.- olefins as well as the copolymerization of .alpha.-olefins.
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