Methods for Reducing Static Charge of a Catalyst and Methods for Using the Catalyst to Produce Polyolefins
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United States of America Patent
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Issued Date -
Jul 17, 2014
app pub date -
Mar 24, 2014
filing date -
Dec 7, 2009
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Abandoned
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Abstract
Catalysts and methods for making and using the same are provided. The method for fabricating a catalyst may includes contacting a supported catalyst with a monomer under conditions that reduce an overall charge of the catalyst to less than about 75% of an initial charge of the catalyst. A method for polymerization may include introducing a pre-polymerized catalyst and one or more olefins into a gas phase fluidized bed reactor, operating the reactor at conditions sufficient to produce a polyolefin, wherein the polymerization is carried out in the substantial absence of any continuity additives.
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