英文名称:1,3-Butanediol, polymer with 2,4-diisocyanato-1-methylbenzene and alpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl); 1,3-Butanediol, polymer with 2,4-diisocyanato-1-methylbenzene and .alpha.-hydro-.omega.-hydroxypoly(oxy-1,4-butanediyl); polymer with 2,4-diisocyanato-1-methylbenzene and alpha-hydro-3-butanediol; 1,3-Butanediol, polymer with 2,4-diisocyanato-1-methylben