Molding compositions containing high-molecular weight linear polyester

A molding composition comprising

• A. 60-97% by weight, based on the weight of the total composition, of a poly(alkylene terephthalate) and
• B. 3-40% by weight, based on the weight of the total composition, of a polyether ester amide,
• the amount of component B being effective to increase the notch impact strength of the composition with respect to that of component A per se,
• component A being the condensation product of
• (1) 80-100 molar percent of terephthalic acid, and
• (2) 0-20 molar percent of another hydrocarbon aromatic-, cycloalkane- or alkane-dicarboxylic acid of 6-36 C atoms, with
• (3) 80-100 molar percent of a 1,n-alkanediol of 2-4C atoms, wherein n is an integer of 2 to 4, and
• (4) 0-20 molar percent of another alkane- or cycloalkane-diol of 3-12 C atoms,
• component B being the condensation product of
• (1) at least one polyamide-forming .omega.-aminoalkanecarboxylic acid or alkanelactam, each of 10-17 carbon atoms,
• (2) a poly(alkylene glycol) having a molecular weight of 400 to 6000,
• (3) at least one other alkane-, cycloalkane- or hydrocarbon aromatic-dicarboxylic acid of 4-11 carbon atoms,
• wherein the weight ratio of component B(1) to [B(2)+B(3)] is 20:80 to 98:2, and the hydroxy and carboxy groups in [B(2)+B(3)] are present in amounts of approximately equivalent to each other.