Patent ID: 8445107

Claim:
A process for production of multicomponent moldings comprising at least one metal layer and at least one polyester layer, which comprises producing a molding of which the at least one polyester layer is composed of a thermoplastic molding composition composed of A) from 10 to 99.99% by weight of at least one thermoplastic polyester, B) from 0.01 to 20% by weight of B1) at least one hyperbranched polycarbonate having an OH number of from 1 to 600 mg KOH/g of polycarbonate (DIN 53240, Part 2), having a glass transition temperature Tg from −80° C. to 140° C., a degree of branching from 10 to 99.9%, and both structural and molecular non-uniformity, or B2) at least one hyperbranched polyester of A x B y type, where x is at least 1.1 and y is at least 2.1, having a glass transition temperature from −50° C. to 140° C., a degree of branching from 10 to 99.9%, and both structural and molecular non-uniformity, or a mixture of these, and C) from 0 to 60% by weight of other additives, where the total of the percentages by weight of components A) to C) is 100%, and wherein the polyester layer exhibits improved adhesion to the at least one metal layer compared to a polyester layer which does not comprise component B) when measured according to DIN EN 60249.20.