Olefin polymerization catalyst components and polymerization pro

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

1982-02-04

1983-12-06

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526125, 526351, 526906, C08F 402, C08F 1000

Patent

active

044195010

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: 4069169 (1978-01-01), Toyoda et al.
patent: 4246136 (1981-01-01), Ueno et al.
patent: 4321345 (1982-03-01), Sato et al.

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