Olefin polymerization catalysts and methods

Details Olefin polymerization catalysts and methods Olefin polymerization catalysts and methods

1991-06-19

1992-02-25

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502113, 502104, 502110, 526125, C08F 444

Patent

active

050914901

ABSTRACT:
Silica supported high activity olefin polymerization catalysts, methods of producing the catalysts and methods of using the catalysts in the polymerization of olefins are provided. The methods of producing the catalysts each basically comprise contacting a particulate silica support impregnated with tungsten oxide with the soluble complex produced by heating a mixture of a metal dihalide with a transition metal compound to produce a solid, and then reacting the solid with an organoaluminum halide. The catalysts produced have improved productivities and are less soluble in polymerization media.

REFERENCES:
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patent: 4391736 (1983-07-01), Capshew
patent: 4394291 (1983-07-01), Hawley
patent: 4477588 (1984-10-01), Hawley
patent: 4565795 (1986-01-01), Short et al.
patent: 4618595 (1986-10-01), Dietz
patent: 5024982 (1991-06-01), Hawley et al.

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