Phillips Petroleum Company

Dale E Pierce

Oscar D Nowlin

Max P McDaniel

M Bruce Welch

Shirley J Martin

Kiplin D Cowan

Elizabeth M Stacy

Jerry L Vaughan

A process for polymerizing olefins wherin a suitable amount of a fumed refractory oxide is used to improve the flow of particulate catalyst as a slurry of that catalyst is charged to the polymerization zone.

Olefin polymerization

An olefin polymerization catalyst prepared by reacting a metal dihalide and a transition metal, then reacting that component with a precipitating agent, and then reacting the resulting solid with an activating component, wherein multiple activation steps are used so that it is possible to obtain a given level of activity with less activating component.

Polyolefin polymerization process and catalyst

An olefin polymerization catalyst prepared by reacting an admixture of anhydrous magnesium dihalide and hydrous magnesium dihalide with reactants including benzoic acid ester, an alkoxytitanium compound, an organoaluminum halide, and a titanium halide.

Process for the preparation of an olefin polymerization catalyst

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Bartlesville, OK, United States of America

Dale E Pierce