Alpha-olefins are polymerized employing a catalyst which forms on mixing a catalyst component A formed by milling together a magnesium halide or manganous halide with selected catalyst adjuvants followed by treatment of the resulting milled product with a halogenated tetravalent titanium compound and combining the product thus formed with a cocatalyst component B comprising at least one of an organoaluminum compound and an organoaluminum monohalide with or without an aromatic ester as a part of the cocatalyst system.
α-烯烃采用一种催化剂进行聚合,这种催化剂是通过将卤化
镁或卤化
锰与选定的催化剂辅助剂混合研磨形成催化剂组分 A,然后用卤代四价
钛化合物对研磨产物进行处理,并将由此形成的产物与由
有机铝化合物和
有机铝单卤化物中的至少一种组成的助催化剂组分 B 相结合而形成的,助催化剂体系中可以有芳香族酯,也可以没有芳香族酯。