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    • 10. 发明授权
    • Process for preparation of olefin polymers
    • 制备烯烃聚合物的方法
    • US5137995A
    • 1992-08-11
    • US711706
    • 1991-06-07
    • Masuzo YokoyamaKouichi KatouToshihiko Sugano
    • Masuzo YokoyamaKouichi KatouToshihiko Sugano
    • C08F4/64C08F4/00C08F4/60C08F4/658C08F10/00
    • C08F10/00
    • A process for the preparation of olefin polymers, which comprises polymerizing an olefin in the presence of a catalyst which comprises: (A) a solid catalyst component obtained by contacting a magnesium dihalide such as MgCl.sub.2 with a titanium tetra-alkoxide such as Ti(O-nBu).sub.4 and then with a polymeric silicon compound having a structure represented by the formula ##STR1## wherein R stands for a hydrocarbon residue such as CH.sub.3, and contacting the obtained solid component with a halogen compound of silicon such as SiCl.sub.4 or with a halogen compound of silicon such as SiCl.sub.4 and a halogen compound of titanium such as TiCl.sub.4, (B) an organoaluminum compound such as Al(Et).sub.3 ; and (C) an organic silicon compound having an Si--O--C linkage such as PhSi(OEt).sub.3. According to this process, a polymer having a high stereoregularity, a narrow particle size distribution and a high bulk density can be obtained in a high yield with a high efficiency.
    • 一种制备烯烃聚合物的方法,其包括在催化剂存在下使烯烃聚合,所述催化剂包括:(A)通过使二氯化镁如MgCl 2与四烷氧基钛如Ti(O)接触而获得的固体催化剂组分 -nBu)4,然后与具有由式“IMAGE”表示的结构的聚合物硅化合物反应,其中R代表烃残基例如CH 3,并使得到的固体组分与硅的卤素化合物如SiCl 4或与 诸如SiCl 4的硅卤素化合物和钛的卤素化合物如TiCl 4,(B)有机铝化合物如Al(Et)3; 和(C)具有Si-O-C键的有机硅化合物如PhSi(OEt)3。 根据该方法,可以高效率地获得具有高立构规整性,窄粒度分布和高堆积密度的聚合物。