Method for the treatment of a catalytic component on a porous me

Details Method for the treatment of a catalytic component on a porous me Method for the treatment of a catalytic component on a porous me

1989-10-30

1992-05-12

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...

502113, 502115, 502116, 526125, C08F 4654

Patent

active

051127857

ABSTRACT:
The method of forming a catalytic component for use in the polymerization of ethylene or a copolymer of ethylene and a C.sub.3 to C.sub.12 alpha olefin in a gas-phase comprising impregnating a porous metal oxide support with at least one titanium compound, magnesium compound, and chlorine compound, and prepolymerizing ethylene or a copolymer of ethylene and a C.sub.3 to C.sub.12 alpha olefin, a least partially in suspension, in the presence of said porous metal oxide support and at least one alkylaluminum compound until a degree of prepolymerization is reached which is suitable for the subsequent gas-phase of fluidized bed polymerization, and the method of polymerizing olefins utilizing the catalysts formed by the prepolymerization.

REFERENCES:
patent: 4287328 (1981-09-01), Kikuta et al.
patent: 4508844 (1985-04-01), Agapiou
patent: 4558023 (1985-12-01), Brun et al.
patent: 4579836 (1986-04-01), Arzoumanidis et al.
patent: 4603184 (1986-07-01), Sato et al.
patent: 4640907 (1987-02-01), Best
patent: 4652540 (1987-03-01), Takahashi et al.

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