POLY(ARYLENE SULFIDE) AND METHOD OF MAKING, AND ARTICLE OF MANUFACTURE INCLUDING, THE SAME

摘要

3266OCA An improved composite includes an improved polymer, specifically an improved poly(phenylene sulfide). The improved polymer is produced by an improved method including a polymerization phase, a recovery phase, a washing phase, and an optional air-curing phase. In the polymerization phase a low temperature cycle and a high temperature cycle are used. In a preferred recovery phase, solidified polymer is quenched with N-methyl-2-pyrrolidone. In the washing phase, the recovered solidified polymer is washed with a hot acidic solution and then hot water. In a preferred embodiment, the method produces substantially linear poly(phenylene sulfide) having a melt flow within the range of about 50 to about 200 grams per 10 minutes and an ash content of not greater than about 0.1 weight percent and a melt crystallization temperature of not less than about 347.degree.F (175.degree.C).