Process for the preparation of polyolefins

Details Process for the preparation of polyolefins Process for the preparation of polyolefins

1993-07-20

1996-01-02

Achutamurthy, P.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By addition of entire unsaturated molecules, e.g.,...

585520, 585523, C07C 222

Patent

active

054810566

ABSTRACT:
This invention relates to a process for the polymerization of polyolefins, in which .alpha.-olefins are polymerized in the presence of a catalyst system composed of: the solid catalyst component (A) obtained by reacting a magnesium compound with oxygen-containing organic compounds of a transition metal, aluminum and silicon, followed by further reacting with a halogenated organoaluminum compound, and the catalyst component (B) comprising of organoaluminum compound and/or organoaluminoxane compound. The catalyst system of this invention provides polymers having an excellent particle form and the molecular weight distribution being easily controlled in a wide range, in high activity, and copolymers having a narrow composition distribution range.

REFERENCES:
patent: 3933934 (1976-01-01), Bailly et al.
patent: 4618596 (1986-10-01), Agapiou et al.
patent: 4711865 (1987-12-01), Speca
patent: 5034484 (1991-07-01), Demiddeleer et al.
patent: 5118769 (1992-06-01), Kondo et al.

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