Polyarylene sulfide production method and polyarylene sulfide production apparatus
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United States of America Patent
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Mar 6, 2018
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Feb 2, 2017
app pub date -
Apr 21, 2015
filing date -
Apr 30, 2014
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Abstract
The present invention provides a production method and a production apparatus for a polyarylene sulfide (PAS), thus the formation of a floating polymer and the leakage of the floating polymer to the outside of the vessel in a washing step are prevented, to achieve steady production of the polymer with high quality, to improve the yield of the polymer and to reduce environmental load, wherein the floating polymer refers to a particles of the polymer which are floating on the surface of a washing solution, in the upper part of the inside of a washing vessel, as a result of the adhesion of a gas onto the surface of the particles of the polymer.
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