Process for producing polyolefins
AssigneeEastman Chemical Company
InventorsRandal Ray Ford, Jeffrey James Vanderbilt, Roxanna Lea Whitfield, Glenn Edward Moore
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Abstract
A novel process for producing homopolymers and interpolymers of olefins which involves contacting an olefin and/or an olefin and at least one or more other olefin(s) under polymerization conditions with a metallocene catalyst and dinitrogen monoxide in amounts sufficient to reduce the electrostatic charge in the polymerization medium. Also provided is a process for reducing electrostatic charge in the production of polyolefins by introducing dinitrogen monoxide into the polymerization medium.
Claims30
A process for polymerizing an olefin and/or polymerization an olefin and at least one or more other olefin(s) comprising contacting, under polymerization conditions, the olefin and/or the olefin and at least one or more other olefin(s) with at least one metallocene catalyst comprising at least one transition metal component having at least one moiety selected from the group consisting of substituted or unsubstituted cyclopentadienyl, substituted or unsubstituted pentadienyl, substituted or unsubstituted pyrrole, substituted or unsubstituted phosphole, substituted or unsubstituted arsole, substituted or unsubstituted boratabenzene, and substituted or unsubstituted carborane, and at least one co-catalyst component, and dinitrogen monoxide, wherein the dinitrogen monoxide is present in an amount sufficient to reduce electrostatic charge in the polymerization medium to a level lower than would be obtained in the absence of dinitrogen monoxide.
A process for reducing electrostatic charge in a polymerization medium, the polymerization comprising an olefin optionally and at least one or more other olefin(s), at least one metallocene catalyst comprising at least one transition metal component having at least one moiety selected from the group consisting of substituted or unsubstituted cyclopentadienyl, substituted or unsubstituted pentadienyl, substituted or unsubstituted pyrrole, substituted or unsubstituted phosphole, substituted or unsubstituted arsole, substituted or unsubstituted boratabenzene, and substituted or unsubstituted carborane, and at least one co-catalyst component the process, comprising introducing into the polymerization medium dinitrogen monoxide in an amount sufficient to reduce electrostatic charge in the polymerization medium to a level lower than would be obtained in the absence of dinitrogen monoxide.
Dependencies are inferred from the claim text.