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

摘要

The present invention presents a thermoplastic elastomer that exhibits superior moisture permeability, excellent flexibility and mechanical properties at a high temperature, particularly settling resistance at a high temperature, and excellent moisture permeability. The thermoplastic elastomer contains a polyether component (A) as a constituting unit, wherein the carbon/oxygen atomic ratio for the poly-oxyalkylene group (-CnH2nO-) that constitutes the above polyether component is in the range from 2.0 to 2.5, the content of the polyether component in the thermoplastic elastomer is in the range from 50 to 95 weight%, and the glass transition temperature of the thermoplastic elastomer is not more than -20 DEG C. Particularly preferable is a thermoplastic elastomer in which the polyether component is bonded with the polyester component (B) via the poly-isocyanate component (C).