Olefin polymerization
AssigneePhillips Petroleum Company
InventorsElizabeth M. Stacy, M. Bruce Welch, Shirley J. Martin, Max P. McDaniel, Dale E. Pierce
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Abstract
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.
Claims22
A process for polymerizing olefins comprising charging a liquid slurry of particulate olefin polymerization catalyst through a restrictive opening into a polymerization zone wherein said catalyst is contacted with at least one olefin under suitable polymerization conditions, wherein said slurry of olefin polymerization catalyst has been prepared by combining the particulate olefin polymerization catalyst and a refractory oxide powder in a suitable liquid, said refractory oxide powder being selected from fumed silica, fumed titanium dioxide, and fumed alumina and being added to the slurry in an amount sufficient to improve the flow of said catalyst through the restrictive opening.
Dependencies are inferred from the claim text.