Catalyst for polymerization of olefins and process for polymerization of olefins using the same
申请人:TOHO TITANIUM CO., LTD.
公开号:EP0665243A2
公开(公告)日:1995-08-02
A catalyst for the polymerization of olefins comprising (A) a solid catalyst component essentially containing magnesium, titanium, an electron donor compound, and a halogen which is prepared by contacting a magnesium compound, a titanium halide compound, and an electron donor compound, (B) an organoaluminum compound, and (C) an organosilicon compound and a process for polymerizing an olefin using the same are disclosed, the organosilicon compound (C) being represented by formula (I):
wherein R1 and R2, which may be the same or different, each represents an alkyl group having from 1 to 3 carbon atoms; and the cyclohexyl group and the cyclopentyl group may be substituted. Using the catalyst, a polyolefin having high stereoregularity and broad molecular weight distribution can be obtained in high yield.
本发明公开了一种用于烯烃聚合的催化剂,该催化剂包括(A)基本上含有镁、钛、电子供体化合物和卤素的固体催化剂组分,该固体催化剂组分是通过镁化合物、卤化钛化合物和电子供体化合物接触制备的;(B)有机铝化合物;(C)有机硅化合物;以及使用该催化剂聚合烯烃的工艺,其中有机硅化合物(C)由式(I)表示:
其中 R1 和 R2 可以相同或不同,各自代表具有 1 至 3 个碳原子的烷基;环己基和环戊基可以被取代。使用该催化剂,可以高产率获得具有高立体规整度和宽分子量分布的聚烯烃。