SEGMENTED THERMOPLASTIC COPOLYESTERS

摘要

ABSTRACT OF THE DISCLOSUREThis invention relates to polyester polyether segmentedcopolymers wherein the polyether segment contains a certain a-mount of heterocyclic ring repeat units, for example, the hydan-toin ring. These polyester polyether segmented copolymers areuseful in the production of fibers, films or other extrusion mol-dings where elastomeric properties are desirable.