Dry olefin polymerization catalyst

Details Dry olefin polymerization catalyst Dry olefin polymerization catalyst

1990-07-23

1992-01-14

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, 502121, 502122, 502123, 502124, 502125, 502127, 502133, 502107, 502120, 526124, C08F 4654

Patent

active

050810901

ABSTRACT:
A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprising the product formed by A) forming a solution of a magnesium-containing species from a magnesium alkyl (or hydrocarbyl) carbonate or a magnesium carboxylate; B) precipitating solid particles from such solution by treatment with a transition metal halide; C) reprecipitating such solid particles from a mixture containing a cyclic ether; D) treating the reprecipitated particles with a transition metal compound and an electron donor; and E) drying the resulting solid particles such that the residual volatile hydrocarbon content is between 0.1 and 0.9 weight percent.

REFERENCES:
patent: 4540679 (1985-09-01), Arzoumanidis et al.
patent: 4612299 (1986-09-01), Arzoumanidis et al.
patent: 4866022 (1989-09-01), Arzoumanidis et al.
patent: 4946816 (1990-08-01), Cohen et al.
patent: 4988656 (1991-01-01), Arzoumanidis et al.
patent: 5013702 (1991-05-01), Arzoumanidis et al.

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