Patent ID: 8501845

Claim:
A thermoplastic molding composition, comprising A) from 10 to 98.9% by weight of at least one thermoplastic polyester; B) from 0.01 to 20% by weight of B1) at least one hyperbranched polycarbonate, wherein B1) has a glass transition temperature of from −80° C. to 140° C.; or B2) at least hyperbranched polyester of A x B y type, wherein x is at least 1.1 and y is at least 2.1 and wherein B2) has a glass transition temperature of from −50° C. to 140° C.; or B3) mixtures of B1) and B2); 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 0.1 to 10% by weight of C1) at least one epoxidized naturally occurring oil; C2) at least one epoxidized naturally occurring fatty acid ester; or C3) mixtures of C1) and C2); and D) from 0 to 60% by weight of other additives; wherein the total of the percentages by weight of components A), B), C), and D) is equal to 100%.