Catalyst modifier and its use in the polymerization of olefin(s)
AssigneeUnivation Technologies, LLC
InventorsTimothy T. Wenzel, David James Schreck, Thomas H. Peterson
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Abstract
The present invention relates to the use of at least one solid compound that when used with a polymerization catalyst in a polymerization process results in a phase change of the solid compound to a liquid that renders the polymerization catalyst substantially or completely inactive.
Claims28
A catalyst composition comprising a supported polymerization catalyst and a solid compound, wherein the solid compound changes phase to a substantially liquid state at a temperature above an operating reaction temperature;
- and wherein the compound in the liquid state reduces the effectiveness of the polymerization catalyst to polymerize olefin(s).
A catalyst composition comprising a bulky ligand metallocene catalyst compound, an activator, a support, and a solid acid compound.
A method for preparing a catalyst composition comprising the steps of:
- a) combining a polymerization catalyst, an activator and a support;
- and
- b) adding a solid polar compound to a) wherein the solid polar compound is unreactive during the preparation.
Dependencies are inferred from the claim text.