Polymer composition comprising a mixture of thermoplastic elastomers.

Abstract

The invention relates to a polymer composition comprising a first thermoplastic elastomer and a second thermoplastic elastomer, which first thermoplastic is a thermoplastic elastomer with TPE11 blocks of formula ABA, in which A is a thermoplastic block comprising predominantly by mole α-methylstyrene units and B is a diene elastomer block comprising more than 95% by mass of the diene units relative to the mass of the diene elastomer block, or a thermoplastic elastomer with TPE12 blocks of formula A'-B'-A', in which A' is a thermoplastic block comprising predominantly by mole α-methylstyrene units and B' is a random copolymer elastomer block comprising diene units and vinylaromatic units, or a mixture of the two thermoplastic elastomers with TPE11 and TPE12 blocks, which second thermoplastic elastomer comprises at least one elastomer block polyether and at least one thermoplastic block, TP block,which TP block has a melting temperature, Tf, within a range from 130°C to 180°C. The invention also relates to a tire comprising such a composition in all or part of its tread.