Catalyst component for polymerization of olefins

Details Catalyst component for polymerization of olefins Catalyst component for polymerization of olefins

1986-06-11

1987-10-27

Garvin, Patrick P.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502118, 502123, 502124, 502125, 502126, 502127, 502134, 526125, C08F 464

Patent

active

047030267

ABSTRACT:
Disclosed is a catalyst component for polymerization of an olefin, which consists essentially of a contact reaction product of (A) a solid composition obtained by mixing and contacting a precipitating agent with a contact reaction product between a magnesium dihalide and a titanium tetraalkoxide and/or a polymer thereof, the addition of the precipitating agent being carried out with stirring at a stirring intensity lower than a level (2nf) two times the floatation limit stirring intensity (nf) of the reaction system, with (B) a liquid titanium compound and/or a halogen compound of silicon.
This catalyst component has a high activity and provides a polymer in which the particle size is relatively large and the particle size distribution is sharply controlled.

REFERENCES:
patent: 3135809 (1964-06-01), Bosmajian
patent: 3179604 (1965-04-01), Ingberman
patent: 3925338 (1975-12-01), Ort
patent: 4157435 (1979-06-01), Toyota et al.
patent: 4192774 (1980-03-01), Kortbeek et al.
patent: 4325837 (1982-04-01), Capshen et al.
patent: 4363746 (1982-12-01), Capshen
patent: 4588703 (1986-05-01), Cowan et al.

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