Abstract: This invention relates to an injection molding composition having a melt viscosity lower than about 2000 poise at 1500/sec. shear rate at a temperature of about 275.degree. C., and an excellent stiffness of at least 200,000 psi, comprising:from about 10 to about 90% of a polyester comprising repeat units from terephthalic acid, ethylene glycol, and 1,4-cyclohexanedimethanol, andfrom about 10 to about 90% styrene copolymer comprising repeat units from about 5 to about 35 mole percent of methyl methacrylate.

Abstract: Disclosed is a polymer blend of a copolyesterether and an isotactic homopolymer of propylene, molded articles of which have improved impact strength.

Abstract: Disclosed is a polymer blend having improved low-temperature impact strength comprising a copolyester of terephthalic acid, ethylene glycol and 1,4-cyclohexanedimethanol, and a styrene-butadiene block copolymer.

Abstract: Disclosed is a polymer blend of a copolyesterether and a styrene-butadiene copolymer, molded articles of which have improved impact strength.

Abstract: A molding composition, comprising:(i) 99-50 weight percent of a polymer blend comprising,(a) 5-95 weight percent nylon 6; and(b) 95-5 weight percent of a polyester copolymer comprising terephthalic acid and glycol monomer units, said glycol comprising 1,4-cyclohexylene dimethanol, and C.sub.2-6 alkylene glycol monomer units; and(ii) 1-50 weight percent of a copolyesterpolyamide comprising C.sub.6-15 alkylene dicarboxylic acid, diamine and diol monomer units, wherein said diol is a C.sub.2-6 alkylene diol or cyclohexane dimethanol and said diamine is a C.sub.4-8 alkylene diamine or a C.sub.4-10 cyclic diamine.