Poly(arylene sulfide/sulfone) processing properties...

Details Poly(arylene sulfide/sulfone) processing properties... Poly(arylene sulfide/sulfone) processing properties...

C - Chemistry, Metallurgy

08

G

C08G 75/20 (2006.01) C08G 75/00 (2006.01)

Patent

CA 2043664

PATENT 32322US Abstract of the Disclosure 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 resul- tant mixture is cooled, and particulate poly(arylene sulfide/sulfone) having improved processing properties is recovered.

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