METHOD FOR PRODUCING POLYARYLENE SULFIDE, DEHYDRATION METHOD, AND DEVICE FOR PRODUCING POLYARYLENE SULFIDE
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United States of America
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Issued Date -
Jun 30, 2022
app pub date -
Mar 19, 2020
filing date -
Mar 19, 2020
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Abstract
A method of producing a PAS according to an embodiment of the present invention includes: a polymerizing step; a water removal step; a hydrogen sulfide recovering step in which hydrogen sulfide contained in a gas component produced in the water removal step is absorbed and recovered by an aqueous solution of an alkali metal hydroxide; and a condensation step in which the gas component produced in the water removal step is condensed. The hydrogen sulfide recovering step is performed before the condensation step.
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