A catalyst component supported on a metallic oxide, which has a high catalytic activity, leaves only a small quantity of catalyst residue in the polymer formed, is scarcely deteriorated even after being stored for a long period of time, and has a particle strength improved to withstand practical use, prepared by: bringing a metallic oxide into contact with a dihydrocarbylmagnesium; bringing the resultant product into contact with a compound of the general formula X¹nM(OR¹)m-n (wherein X¹ represents hydrogen, halogen or C₁ to C₂₀ hydrocarbyl, M represents boron, carbon, aluminum, silicon or phosphorus atom, R¹ represents C₁ to C₂₀ hydrocarbyl, m is the valence of M, and m > n ≧ 0) and a titanium alkoxide of the general formula Ti(OR²)₄ (wherein R² represents C₁ to C₁₂ hydrocarbyl) to form a solid material; bringing the solid material into contact with an olefin in the presence of an organoaluminum compound; and bringing the resultant product with a halogenated alcohol and then with both of an electron donating compound and a titanium compound.
一种以金属氧化物为载体的催化剂组分,它具有很高的催化活性,在形成的聚合物中只留下少量的催化剂残留物,即使存放很长时间也几乎不会变质,而且颗粒强度得到改善,能够经受实际使用,其制备方法如下将金属氧化物与二氢
羰基镁接触;使生成物与通式 X¹nM(OR¹)m-n 的化合物接触(其中 X¹ 代表氢、卤素或 C₁ 至 C₂₀ 碳氢基,M 代表
硼、碳、铝、
硅或
磷原子、R¹代表 C₁至 C₂₀烃基,m 为 M 的化合价,且 m > n ≧ 0)和通式为 Ti(OR²)₄的
氧化钛(其中 R² 代表 C₁至 C₁₂烃基)以形成固体材料;在
有机铝化合物存在的情况下,使固体材料与烯烃接触;并使生成物与卤代醇接触,然后与电子捐赠化合物和
钛化合物接触。