SEGMENTED THERMOPLASTIC COPOLYESTERS ENDOWED WITH ELASTOMERIC PROPERTIES

摘要

Segmented thermoplastic copolyesters endowed with elastomeric properties, containing from 25% to 80% by weight of short-chain polyester units derived from dicarboxylic acids and a diol, and from 20 to 75% by weight of long-chain polyester units derived from dicarboxylic acids and poly-(alkylene oxide)-glycols in which at least 10% by weight of the poly-(alkylene oxide)-glycol has a molecular weight lower than 300, and a C/O ratio comprised within the range of from 1.8 to 4.3.