THERMOPLASTIC POLYBUTYLENE TEREPHTHALATE COMPOSITIONS FOR WIRE COATING APPLICATIONS

摘要

Thermoplastic compositions based on polybutylene terephthalate are provided which are useful in high temperature resistant wire coating applications. These compositions generally are four-component alloys containing a) 40-65 % by weight of poly (1,4-butylene terephthalate); b) 1-30 % by weight of a polymeric grafting agent which is an ethylene copolymer carrying reactive groups; c) 0-20 % by weight of an ethylene copolymer ionomer; d) at least one component selected from the group of a copolyester urethane, a copolyether ester, a hydrogenated styrene/diene block copolymer optionally grafted with maleic anhydride, an adduct of maleic anhydride and a copolymer of ethylene or an acrylic-modified elastomer-based polymer.