Production of granular poly(arylene sulfide) polymers...

Details Production of granular poly(arylene sulfide) polymers... Production of granular poly(arylene sulfide) polymers...

C - Chemistry, Metallurgy

08

G

C08G 75/14 (2006.01) C08G 75/02 (2006.01)

Patent

CA 2103628

ABSTRACT OF THE DISCLOSURE A method for removing oligomers and non-polymeric impurities from poly(arylene sulfide) polymers and producing the polymers in easily recoverable granular form is provided in which a poly(arylene sulfide) polymer associated with oligomers and non-polymeric impurities is contacted with a solvent, water, and optionally, a base, at a sufficient temperature to substantially dissolve the polymer, oligomers and impurities; then the solution is cooled to a temperature at which the poly(arylene sulfide) precipitates while oligomers and impurities remain in solution, then the precipitated polymer is separated from the solution containing the oligomers and impurities. A polymer product produced by this method is also disclosed.

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