Patent ID: 8362146

Claim:
A thermoplastic molding composition, comprising A) from 10 to 98% by weight of at least one thermoplastic polyester, B) from 0.01 to 20% by weight of B1) at least one hyperbranched polycarbonate with an OH number of from 1 to 600 mg KOH/g of polycarbonate (to DIN 53240, Part 2), wherein B1) has a glass transition temperature Tg from −80° C. to 140° C. or B2) at least hyperbranched A x B y polyester, wherein B2) has a glass transition temperature Tg from −50° C. to 140° C. or a mixture of B1) and B2), wherein A x and B y are different monomers and indices x and y are the number of functional groups present in A and B, wherein x is at least 1.1 and y is at least 2.1, wherein B2) has an OH number of from 0 to 600 mg KOH/g, and a COOH number of from 0 to 600 Mg KOH/g, wherein a degree of branching of both B1) and B2) is from 10 to 99.9%, and wherein B1) and B2) have both structural and molecular non-uniformity; C) from 1 to 40% by weight of an impact-modifying polymer, D) from 0 to 60% by weight of other additives, where the total of the percentages by weight of components A) to D) is 100%.