THERMOPLASTIC ELASTOMER, USE THEREOF, AND PROCESS FOR PRODUCING THE SAME

摘要

A thermoplastic elastomer which is excellent in moisture permeability and especially in flexibility and high-temperature mechanical properties, in particular high-temperature yielding resistance. The thermoplastic elastomer contains a polyether ingredient (A) as a structural unit, wherein the polyether ingredient is constituted of a polyoxyalkylene (-CnH2nO-) having carbon/oxygen atomic ratio of from 2.0 to 2.5 and is contained in an amount of 50 to 95 wt.% based on the thermoplastic elastomer, and the elastomer has a glass transition temperature of -20 DEG C or lower. Especially preferably, the elastomer comprises the polyether ingredient (A) and a polyester ingredient (B) bonded thereto with a polyisocyanate ingredient (C).