Patent ID: 8921513

Claim:
A method for decreasing the halogen content of a polyarylene sulfide comprising: washing a polyarylene sulfide composition comprising (a) a polyarylene sulfide comprising aryl halide endgroups and (b) one or more additives with a disulfide solution to form a disulfide washed polyarylene sulfide composition comprising a disulfide washed polyarylene sulfide and the one or more additives, the one or more additives comprising a fibrous filler, the disulfide solution including a disulfide compound and an organic solvent, the washing being carried out at a temperature that is less than 280° C. and at atmospheric pressure, the organic solvent being an organic solvent that will not decompose the polyarylene sulfide; wherein the halogen content of the disulfide washed polyarylene sulfide is less than 50% of the halogen content of the polyarylene sulfide comprising aryl halide endgroups, and wherein the disulfide washed polyarylene sulfide has a halogen content of less than 1000 parts per million.