Process for devolatilization of polymer of an aromatic alkylene
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United States of America Patent
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Jun 26, 2012
Grant Date -
May 27, 2010
app pub date -
Jun 3, 2008
filing date -
Jun 12, 2007
priority date (Note) -
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Abstract
Process for devolatilization of a polymer of an aromatic alkylene, such as styrene and, in particular, an improved process using water as a stripping agent (i) in which the total amount of water to be disposed of can be reduced, (ii) which allows at least a portion of the water to be recycled as stripping agent, reducing make-up requirements for the stripping agent, and (iii) which allows at least a portion of the aromatic alkylene monomer in the water to be recycled to the polymerization process (via the devolatilization steps) rather than being disposed.
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