Patent ID: 7375165

Claim:
A thermoplastic composition comprising: a thermoplastic polyamide or copolyamide matrix based on polyamides or copolyamides obtained by polycondensation of diacids and diamines; and at least one additive for modifying the interaction of the matrix with respect to at least one agent, this additive comprising at least one polymer that is hyperbranched, and functionalized with R 2 , via its end groups, R 2 being a substituted or unsubstituted hydrocarbon-based radical selected from the group consisting of a silicone radical, a linear or branched alkyl radical, an aromatic radical, an arylalkyl radical, an alkylaryl radical and a cycloaliphatic radical, the hydrocarbon-based radical optionally having one or more unsaturations or one or more hetero atoms, said matrix and the functionalized hyperbranched polymer additive being incompatible.