2-Butene-1,4-diol, 2,3-dibromo-, polymer with 2,4-diisocyanato-1-methylbenzene and alpha-hydro-omega-hydroxypoly(oxy(methyl-1,2-ethanediyl)) 99728-51-5 Polypropyleneoxydiol, dibromobutenediol, toluene diisocyanate polymer