Polymerization process
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United States of America Patent
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Apr 6, 2010
Grant Date -
Apr 3, 2008
app pub date -
Jun 20, 2005
filing date -
Jun 21, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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.
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