Catalyst system for use in olefinic polymerization

Details Catalyst system for use in olefinic polymerization Catalyst system for use in olefinic polymerization

1988-06-24

1989-08-29

Garvin, Patrick P.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526128, 526139, 526351, 526352, C08F 464

Patent

active

048618470

ABSTRACT:
A catalyst system for use in olefinic polymerization and copolymerization is comprised of components (A), (B) and (C). The catalyst component (A) consisting essentially of titanium, magnesium, halogen, polycarboxylic acid esters and organic phosphorus compounds is a solid product, being prepared by mixing titanium tetrahalide and auxiilary precipitant with a homogeneous solution of magnesium halide in a solvent system consisting essentially of an organic epoxy compound and an organic phosphorus compound to form a solid product which is then treated with a polycarboxylic acid ester and titanium tetrahalide. Component (B) is an organic aluminum compound, and component (C) is an organic silicon compound. The catalyst system has very high activity, and the resultant polymers have very high stereospecificity and good granular appearance.

REFERENCES:
Derwent Abstracts, Week 8402, A17, p. 14 (1984).
European Search Report.

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