Univation Technologies, LLC

Douglas H Jackson

Timothy R Lynn

Bruce Jon Savatsky

Daniel Paul Zilker, Jr

Mark Bradley Davis

John Henry Oskam

Mark Williams Blood

Daniel P Zilker

A method of performing a polymerization reaction in a gas phase polymerization reactor to produce a bimodal polymer while controlling activity of a bimodal polymerization catalyst composition in the reactor by controlling concentration of at least one induced condensing agent ('ICA') in the reactor is provided. In some embodiments, the ICA is isopentane (or another hydrocarbon compound) and the bimodal catalyst composition includes a Group 15 and metal containing catalyst compound (or other HMW catalyst for catalyzing polymerization of a high molecular weight fraction of the product), and a metallocene catalyst compound (or other LMW catalyst for catalyzing polymerization of a low molecular weight fraction of the product).

Method for controlling bimodal catalyst activity during polymerization

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Flatwoods, KY, United States of America

Douglas H Jackson