Polymerization process
AssigneesE. I. Du Pont de Nemours and Company, Basell Technology Company BV
InventorsSamuel David Arthur, Mark F. Teasley, Dewey Lynn Kerbow, Ofelia Fusco, Tiziano Dall' Occo, Giampiero Morini
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Abstract
Processes for the polymerization of olefins in which late transition metal complexes, such as nickel, iron, cobalt and palladium complexes, are used as a polymerization catalyst have improved polymer productivity when oxidizing agents are present during at least a portion of the polymerization. The polymers produced are useful as elastomers, for packaging films, and molding resins.
Claims33
A process for the polymerization of an olefin, comprising the step of contacting, under polymerization conditions, said olefin with an olefin coordination polymerization catalyst comprising a complex of a Group 8 to Group 10 metal, wherein an oxidizing agent is present during at least a portion of said contacting.
An improved process for the polymerization of an olefin in which said olefin is contacted, under polymerization conditions, with an olefin coordination polymerization catalyst comprising a complex of a Group 8 through a Group 10 metal, wherein the improvement comprises contacting said polymerization catalyst and olefin in the presence of an oxidizing agent.
A process for improving the productivity of an olefin coordination polymerization catalyst comprising a complex of a Group 8 to Group 10 metal, in a process for producing a polyolefin by contacting an olefin with said polymerization catalyst under conditions to polymerize said olefin, said process comprising the step of contacting said olefin and said polymerization catalyst in the presence of an oxidizing agent.
Dependencies are inferred from the claim text.