RESIN COMPOSITION AND MOLDED ARTICLE

A resin composition enhanced in impact resistance and heat shock resistance is provided that includes at least one thermoplastic resin selected from the group consisting of polybutylene terephthalate resins, polystyrene resins, and polyphenylene sulfide resins. A shaped article obtained from the resin composition is also provided. The resin composition includes 100 parts by mass of a thermoplastic resin (A); and 1 to 100 parts by mass of a multibranched block copolymer or a hydrogenated product thereof (B) wherein the multibranched block copolymer contains a polymer block (b1) including aromatic vinyl compound-derived structural units, and a polymer block (b2) including conjugated diene compound-derived structural units, wherein the thermoplastic resin (A) includes at least one selected from the group consisting of polybutylene terephthalate resins (A-1), polystyrene resins (A-2), and polyphenylene sulfide resins (A-3); and the multibranched block copolymer or the hydrogenated product thereof (B) includes at least one selected from the group consisting of star block copolymers or hydrogenated products thereof (B-1) wherein the star block copolymers include 3 or more chains (bα) each containing a polymer block (b1) including aromatic vinyl compound-derived structural units, and a polymer block (b2) including conjugated diene compound-derived structural units, and one nucleus (bβ) derived from a coupling agent; and graft block copolymers or hydrogenated products thereof (B-2) wherein the graft block copolymers include a main chain (bγ) including conjugated diene compound-derived structural units, and a side chain (bδ) containing a polymer block (b1) including aromatic vinyl compound-derived structural units, and a polymer block (b2) including conjugated diene compound-derived structural units.