Patent ID: 8129453

Claim:
A method for preparing a thermoplastic elastomer composition comprising a continuous phase composed of a modified polyamide resin (A) and a dispersed phase composed of a halogenated isoolefin/para-alkylstyrene copolymer rubber (B), which comprises melt-kneading 100 parts by weight of a polyamide resin (C) with not less than 0.05 part by weight and less than 3 parts by weight of a compound (D) capable of binding to a terminal amino group of the polyamide resin at a temperature of not lower than the melting point of the polyamide resin (C) to obtain a modified polyamide (A); and melt-kneading the modified polyamide (A) and a halogenated isoolefin/para-alkylstyrene copolymer rubber (B) wherein the compound (D) capable of binding to a terminal amino group of the polyamide resin is a monofunctional epoxy compound.