Catalytic component for polymerization of .alpha.-olefin and met

Details Catalytic component for polymerization of .alpha.-olefin and met Catalytic component for polymerization of .alpha.-olefin and met

1984-01-26

1985-06-25

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526144, 526151, 526907, 526351, C08F 444

Patent

active

045255580

ABSTRACT:
A Ziegler type supported catalytic component for polymerization of an .alpha.-olefin is prepared by allowing an organo-magnesium compound expressed by a generic formula of R'MgX' (wherein R' represents a hydrocarbon group having 1 to 20 carbon atoms and X' either a halogen atom chosen out of chlorine, bromine and iodine or a hydrocarbon group having 1 to 20 carbon atoms) to react with carbon tetrahalide in the presence of an electron donor compound to obtain a solid product through a solid-liquid separation process; by heat treating the separated solid product with a carbon halide; by treating the heat treated solid product with phenols at 90.degree. to 180.degree. C.; and by treating this phenol treated product further with a halogenated titanium compound. Homo- or co-polymerization of an .alpha.-olefin is carried out in the presence of a catalyst composition consisting of the above catalytic component and an organo-aluminum compound. With this catalytic component, stereospecific polymerization of an .alpha.-olefin can be stably carried out at high activity.

REFERENCES:
patent: 4416799 (1983-11-01), Takitani et al.
patent: 4426314 (1984-01-01), Miyazaki et al.
patent: 4442225 (1984-04-01), Takitani et al.
patent: 4450242 (1984-05-01), Mink

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