英文名称:Poly(oxy-1,4-butanediyl), alpha-hydro-omega-hydroxy-, polymer with 1,3-diisocyanato-2-methylbenzene and 2,4-diisocyanato-1-methylbenzene; Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 1,3-diisocyanato-2-methylbenzene and 2,4-diisocyanato-1-methylbenzene yanato-2-methylbenzene and 2,4-diisocyanato-1-methylbenzene; Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, poly