THERMOPLASTIC RESIN COMPOSITION

PURPOSE:To obtain the title composition excellent in chemical resistance, mechanical strength, and heat resistance by using a specified polyphenylene ether resin, ethylene/alpha-olefin cooligomer, and block copolymer elastomer as constituents. CONSTITUTION:The title composition consists of a polyphenylene ether resin having structural units of formula I (wherein R1 is 1-3C alkyl; R2 and R3 are each If or R1) in its principal chain or its mixture with PS resin, an ethylene/alpha- olefin coolygomer having structural units of formula II (wherein x is 1 to 30; Y is 1 to 10; p is 3 to 60; n is 1 to 14) and a number-average molecular weight of 500 to 5000, and a hydrogenated A-B-A block copolymer elastomer (wherein A is a polymer block of a vinyl aromatic hydrocarbon; B is a polymer block of a conjugated diene hydrocarbon) (e.g. Kraton G1650, a product of Shell Chemical).