Synonyms: Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane;Isophorane diisocyanate, polybutylene glycol polymer;Poly(oxytetramethylene) glycol, isophorone diisocyanate copolymer;Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, polymer with 5-isocyanato-1-(isocyanatomethyl) -1,3,3-trimethylcyclohexane;isophorone diisocyanate/ tetrahydrofuran copolymer