Patent ID: 8362136

Claim:
A thermoplastic molding composition, comprising A) from 10 to 98.99% 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 (to DIN 53240, Part 2),and B1 ) has a glass transition temperature Tg of from −80°C. to 140°C. or B2) at least one hyperbranched A x B y polyester and B2) has a glass transition temperature T g of 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 60% by weight of at least one graft polymer, comprising, c 1 ) from 20 to 80% by weight of a graft base comprising an elastomeric polymer based on alkyl acrylates having from 1 to 8 Carbon atoms in the alkyl moiety and having a glass transition temperature below 10° C. c 2 ) from 20 to 80% by weight of a graft composed of c 21 ) from 60 to 95% by weight of styrene or of substituted styrenes of the general formula I where R is an alkyl radical having from 1 to 8 carbon atoms or a hydrogen atom, and R 1 is an alkyl radical having from 1 to 8 carbon atoms, and n is 1, 2, or 3, and c 22 ) from 5 to 40% by weight of at least one unsaturated nitrile, D) from 0 to 60% by weight of a copolymer comprising, d 1 ) from 60 to 95% by weight of styrene or of substituted styrenes of the general formula I, or a mixture of these, d 2 ) from 5 to 40% by weight of at least one unsaturated nitrile, E) from 0 to 60% by weight of other additives, where the total of the percentages by weight of components A) to E) is 100%.