Patent ID: 7173090

Claim:
A polyphenylene sulfide resin composition, comprising: (a) a polyphenylene sulfide resin having an amount of oligomers extractable with methylene chloride of 0.7% by weight or less and an amount of an â€”SX group of 20 Î¼mol/g or more wherein S is a sulfur atom, and X is an alkali metal or a hydrogen atom; (b) an amorphous thermoplastic resin having a glass transition temperature (Tg) of 120Â° C. or higher; and (c) a copolymer at least comprising an unsaturated monomer having an epoxy group and/or an oxazolyl group and styrene as monomer components, the percentage of said styrene monomer in total monomers being more than 50% by weight, and the percentage of said unsaturated monomer in total monomers being from 0.3 to 20% by weight, wherein the amount of component (a) is from 1 to 99 parts by weight; the amount of component (b) is from 99 to 1 part by weight wherein the sum of component (a) and component (b) totals 100 parts by weight; and the amount of component (c) is from 1 to 20 parts by weight relative to 100 parts by weight of the sum of component (a) and component (b), and wherein the amount of oligomers extractable with methylene chloride is measured by adding 5 g of the polyphenylene sulfide to 80 ml of methylene chloride and being subjected to a Soxhlet extraction for 6 hours.