Adjusting polymer characteristics through process control
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United States of America Patent
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Jan 29, 2008
Grant Date -
Jun 8, 2006
app pub date -
Jun 20, 2005
filing date -
Dec 7, 2004
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Abstract
Properties of a polymer produced in gas phase or slurry phase using a dual catalyst such as polydispersity and comonomer incorporation, may be controlled by controlling reaction parameters such as temperature, (co)monomer pressure, hydrogen partial pressure and the presence of non-polymerizable hydrocarbon. This provides an easy method to control the bimodality of a polymer as well as comonomer incorporation.
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