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    • 20. 发明授权
    • Process for producing polypropylene or propylene random copolymer
    • 生产聚丙烯或丙烯无规共聚物的方法
    • US06512061B1
    • 2003-01-28
    • US09889223
    • 2001-07-13
    • Masami KimuraTakanori NakashimaChikashi Okayama
    • Masami KimuraTakanori NakashimaChikashi Okayama
    • C08F442
    • C08F210/16C08F10/00C08F210/06Y10S526/901C08F4/6567C08F4/656C08F4/6492C08F4/6465C08F2500/12C08F210/08
    • The invention provides a process for producing polypropylene and/or random copolymers of propylene type using a stereoregular catalyst which comprises a titanium-containing solid catalyst component (A), an organoaluminum compound (B) and if required an organosilicon compound (C), wherein [I] before carrying out homopolymerization of propylene or random copolymerization of propylene with an &agr;-olefin other than propylene, the above component (A), an organoaluminum compound (B′) and if required an organosilicon compound (C′) are used, and a small amount of propylene or ethylene and/or an &agr;-olefin of 4-20 carbon atoms for pre-activation treatment is supplied to the above component (A), and [II] a catalyst which is prepared by adding an organosilicon compound (C″) to the pre-activated stereoregular catalyst in a molar ratio of 0.1-50 as Si/Ti, is used to produce polypropylene or propylene random copolymers.
    • 本发明提供一种使用立体规则催化剂制备丙烯类型和/或无规共聚物的方法,其包括含钛固体催化剂组分(A),有机铝化合物(B)和如果需要的有机硅化合物(C),其中 在进行丙烯均聚或丙烯与丙烯以外的α-烯烃的无规共聚合时,上述组分(A),有机铝化合物(B')和如果需要的话,使用有机硅化合物(C'), 并将少量的丙烯或乙烯和/或4-20个碳原子的α-烯烃用于预活化处理被提供给上述组分(A),和[II]通过将有机硅化合物 (C“)与预活化的立构规整催化剂的摩尔比为0.1-50作为Si / Ti,用于生产聚丙烯或丙烯无规共聚物。