A process for producing polypropylene, which comprises preliminarily polymerizing 3-methylbutene-1 in the presence of a catalyst system formed from
[A] a solid titanium catalyst component containing magnesium, titanium, halogen and polycarboxylic acid esters as essential components,
[B] an organoaluminum compound, and
[C] an organosilicon compound represented by the general formula RnSi(OR′)4-n wherein R and R′ represent a hydrocarbon group, and 0
一种生产聚丙烯的工艺,其中包括在以下物质组成的催化剂体系存在下初步聚合 3-甲基丁烯-1: 1.
[A] 一种固体钛催化剂组分,其基本成分包括镁、钛、卤素和聚羧酸酯、
[B] 一种有机铝化合物,以及
[C] 由通式 RnSi(OR′)4-n 表示的有机硅化合物,其中 R 和 R′代表烃基,0
Olefin polymerization catalyst, component thereof and process for polymerizing olefins with the catalyst, the film and injection-molded article from the obtained polyolefin
申请人:MITSUI PETROCHEMICAL INDUSTRIES, LTD.
公开号:EP0360497A2
公开(公告)日:1990-03-28
An olefin polymerization catalyst component subjected to successive preliminary polymerization treatment using each of a straight chain alpha-olefin having 2 to 5 carbon atoms and 3-methyl-1-butene; an olefin polymerization catalyst using the olefin polymerization catalyst component; a process for polymerizing olefin(s) which comprises polymerizing or copolymerizing olefin(s) in the presence of the olefin polymerization catalyst; and a film and an injection-molded article of polypropylene which is prepared by the process are also provided.
此外,还提供了一种烯烃聚合催化剂组分,使用具有 2 至 5 个碳原子的直链α-烯烃和 3-甲基-1-丁烯中的每一种进行连续的初步聚合处理;一种使用该烯烃聚合催化剂组分的烯烃聚合催化剂;一种聚合烯烃的工艺,该工艺包括在该烯烃聚合催化剂存在的情况下聚合或共聚烯烃;以及一种由该工艺制备的聚丙烯薄膜和注塑制品。
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