Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1989-11-09
1991-05-07
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...
502133, 526124, C08F 4656
Patent
active
050137026
ABSTRACT:
A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprises the product formed by (A) forming a solution of a magnesium-containing species from a magnesium carbonate or a magnesium carboxylate; (B) precipitating solid particles from such magnesium-containing solution by treatment with a transition metal halide and an organosilane; (C) reprecipitating such solid particles from a mixture containing a cyclic ether; and (D) treating the reprecipitated particles with a transition metal compound and an electron donor.
REFERENCES:
patent: 4866022 (1989-09-01), Arzoumanidis et al.
Arzoumanidis Gregory G.
Johnson Bryce V.
Karayannis Nicholas M.
Khelghatian Habet M.
Lee Sam S.
Amoco Corporation
Garvin Patrick P.
Magidson William H.
Medhurst Ralph C.
Oliver Wallace L.
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