| 摘要 |
PATENT 32322US A method of improving the processing properties such as melt stability of poly(arylene sulfide/sulfone) is provided. The polymer is heated with a polar organic solvent, water and optionally, an alkali metal or alkaline earth metal carboxylate, to a temperature and for a time to dissolve the polymer whereupon the resulting solution is quenched with additional polar organic solvent, water and an alkali metal or alkaline earth metal carboxylate if not present in the original solution to cause a phase separation. The resultant mixture is cooled, and particulate poly(arylene sulfide/sulfone) having improved processing properties is recovered.
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