Recovering granular poly(arylene sulfide) particles from a...

Details Recovering granular poly(arylene sulfide) particles from a... Recovering granular poly(arylene sulfide) particles from a...

C - Chemistry, Metallurgy

08

G

402/344

C08G 75/16 (2006.01) C08G 75/02 (2006.01)

Patent

CA 1228448

Abstract of the Disclosure A method for recovering granular poly(arylene sulfide) from a polymerization reaction mixture at a temperature above that at whcih poly(arylene sulfide) is in molten phase comprising polar organic solvent and poly(arylene sulfide) in which, in the presence of a sufficient amount of separation agent tocause a phase separation of molten poly(arylene sulfide) and polar organic solvent, the temperature of the polymerization reaction mixture is reduced sufficiently to solidify the poly(arylene sulfide) to produce a slurry comprising particulate poly(arylene sulfide) in polar organic solvent. In a preferred embodiment a slurry comprising particulate poly(phenylene sulfide) in N-methyl-2-pyrrolidone is produced using water, and optionally an alkali metal carboxylate, as separation agent.

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