Olefin polymerization catalyst components and polymerization pro

Details Olefin polymerization catalyst components and polymerization pro Olefin polymerization catalyst components and polymerization pro

1980-11-18

1982-08-10

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

526125, 526122, C08F 464

Patent

active

043437214

ABSTRACT:
A process for the preparation of an olefin polymerization catalyst component which comprises contacting a solid composition obtained by combining a magnesium halide, an electron donor and a tetravalent titanium compound, this composition being substantially free from aluminum compounds, with a liquid medium comprising a halide of B, Al, Ga, In, Tl, Sn or Sb, these elements being present in their highest valency state or a halide of tetravalent Te, and removing from the catalyst component substantially all metal halide originating from the liquid medium as by washing the catalyst component with a hydrocarbon or halohydrocarbon liquid.

REFERENCES:
patent: 3784481 (1974-01-01), Lassau et al.
patent: 4071672 (1978-01-01), Kashiwa
patent: 4146502 (1979-03-01), Yokoyama et al.
patent: 4151111 (1979-04-01), Yokoyama et al.
patent: 4237254 (1980-12-01), Kitagawa et al.
patent: 4242229 (1980-12-01), Fujii et al.
Chem. Abstracts, 89, No. 20, Nov. 1978, p. 18, Abstract 164,194e.

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