Processes and apparatus for continuous solution polymerization
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jul 14, 2011
app pub date -
Dec 17, 2010
filing date -
Jan 14, 2010
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Abstract
The disclosure provides a plant for the continuous solution polymerization of a feed comprising one or more olefin monomers in a solvent, e.g., hydrocarbon solvent, in which the plant comprises means for separating solvent from the polymer including a flash tank and a vacuum devolatilizer. The plant also includes in a first aspect stabilizer addition means for adding a stabilizer to the concentrated polymer fines at a location downstream of the flash and upstream of the vacuum devolatilizer. In another aspect the plant comprises means to add a molten stabilizer to the polymer at a location downstream of the reactors.
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