Olefin polymerization catalyst component, process for production

Details Olefin polymerization catalyst component, process for production Olefin polymerization catalyst component, process for production

1989-09-13

1991-02-05

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...

502108, 502120, 502125, 502127, 526125, C08F 4656

Patent

active

049904779

ABSTRACT:
A catalyst component (X") obtained by treating an olefin polymerization catalyst (X) formed from (A) a solid titanium catalyst component comprising magnesium, titanium, halogen and an electron donor as essential ingredients, (B) an organoaluminum compound catalyst component, and as required, (C) an electron donor with an alpha-olefin by preliminarily polymerizing the alpha-olefin in an amount of 0.1 to 500 g per gram of the solid titanium catalyst component (A) in the presence of said catalyst (X), and contacting the treated catalyst (X') with at least 0.1 mole, per gram-atom of titaninum in the treated catalyst (X"), of oxygen. A process for producing the olefin polymerization catalyst component. A catalyst (Y) for olefin polymerization formed from [I] the above catalyst component (X"), [II] an organoaluminum compound catalyst component and as required [III] an electron donor. Also provided is a process for polymerizing olefins in the presence of the olefin polymerization catalyst (Y).

REFERENCES:
patent: 4295991 (1981-10-01), Wristers
patent: 4780443 (1988-10-01), Matsuura et al.
patent: 4871705 (1989-10-01), Hoel

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