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AssigneeExxonMobil Chemical Patents Inc.
InventorsRobert O. Hagerty, Chia S. Chee, Randall B. Laird, Michael A. Risch, Pradeep P. Shirodkar, Zerong Lin, Larry L. Iaccino
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This invention is directed to processes of making polymer in the presence of a hydrofluorocarbon or perfluorocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and to the recovery of the hydrofluorocarbon and other hydrocarbons such as hydrocarbons for reuse in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of ethylene based polymers using bulky ligand metallocene-type catalyst systems.
A process for producing polymer comprising polymerizing ethylene and optionally one or more comonomers at a temperature of from 30° C. to 200° C. in the presence of a bulky ligand metallocene-type catalyst system and a diluent to form a slurry of polymer solids, wherein the diluent comprises at least 5 volume percent of a fluorinated hydrocarbon based on the total volume of the diluent.
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Dependencies are inferred from the claim text.