51855-41-5 Benzene, 1,1'-methylenebis(4-isocyanato-, polymer with alpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl) Poly(oxy-1,4-butanediyl), alpha-hydro-omega-hydroxy-, polymer with 1,1'-methylenebis(isocyanatobenzene) Poly(oxytetramethylene) glycol, methylene diphenyl diisocyanate polymer Poly(oxytetramethylene)diol, methylenebis(phenylisocyanate) polymer