| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the captioned problem in scale-up, providing a method of recovering efficiently cyclic PAS (Polyarylene Sulfide) of high purity even in a production facility for the cyclic PAS. <P>SOLUTION: The method of recovering an organic polar solvent (c) by solid-liquid separation, from the organic polar solvent (c) containing at least the cyclic polyarylene sulfide (a) and a linear polyarylene sulfide (b) is disclosed, wherein the solvent is transferred to a solid-liquid separator at a temperature range of a boiling point or less of the organic polar solvent (c) in the atmospheric pressure with a required stirring power applied to the mixture being 2.0 kWh/m<SP POS="POST">3</SP>or less. <P>COPYRIGHT: (C)2013,JPO&INPIT |
