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    • 4. 发明授权
    • Catalyst system for use in olefinic polymerization
    • 用于烯烃聚合的催化剂体系
    • US4861847A
    • 1989-08-29
    • US211459
    • 1988-06-24
    • Bingquan MaoAichun YangYing ZhengJuxiou YangZhulan Li
    • Bingquan MaoAichun YangYing ZhengJuxiou YangZhulan Li
    • C08F4/60C08F4/64C08F4/658C08F10/00
    • C08F10/00
    • A catalyst system for use in olefinic polymerization and copolymerization is comprised of components (A), (B) and (C). The catalyst component (A) consisting essentially of titanium, magnesium, halogen, polycarboxylic acid esters and organic phosphorus compounds is a solid product, being prepared by mixing titanium tetrahalide and auxiilary precipitant with a homogeneous solution of magnesium halide in a solvent system consisting essentially of an organic epoxy compound and an organic phosphorus compound to form a solid product which is then treated with a polycarboxylic acid ester and titanium tetrahalide. Component (B) is an organic aluminum compound, and component (C) is an organic silicon compound. The catalyst system has very high activity, and the resultant polymers have very high stereospecificity and good granular appearance.
    • 用于烯烃聚合和共聚的催化剂体系由组分(A),(B)和(C)组成。 基本上由钛,镁,卤素,多元羧酸酯和有机磷化合物组成的催化剂组分(A)是固体产物,其通过将四卤化钛和自缩速沉淀剂与卤化镁的均匀溶液在基本上由 有机环氧化合物和有机磷化合物形成固体产物,然后用多元羧酸酯和四卤化钛处理。 组分(B)是有机铝化合物,组分(C)是有机硅化合物。 该催化剂体系具有非常高的活性,所得聚合物具有非常高的立体定向性和良好的粒状外观。