英文名称:Poly(oxy-1,4-butanediyl), alpha-hydro-omega-hydroxy-, polymer with 1,3-diisocyanato-2-methylbenzene, 2,4-diisocyanato-1-methylbenzene and alpha-hydro-omega-hydroxypoly(oxy(methyl-1,2-ethanediyl)); Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, polymer with 1,3-diisocyanato-2-methylbenzene, 2,4-diisocyanato-1-methylbenzene and α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)]