abstract |
57 Novel thermoplastic polyester compositions having improved impact behavior are produced. These compositions consist essentially of a blend of polybutylene terephthalate, having an intrinsic viscosity between about 0.4 and about 1.0 deciliters per gram as determined in orthochlorophenol at 25° C, with above 20% and up to 30% of a butadiene-based multiphase composite polymer. |