68441-16-7 70750-09-3 Hydroxypolybutadiene, alpha-hydro-omega-hydroxy poly(oxy(methyl-1,2-ethanediyl)), polymethylenepolyphenylene isocyanate polymer Isocyanic acid, polymethylenepolyphenylene ester, polymers with hydroxy-terminated polybutadiene and polypropylene glycol Polyhydroxypolybutadiene, polymer with alpha-hydro-omega-hydroxypoly(oxy(methyl-1,2-ethanediyl)) and polymethylenepolyphenyleneisocyanate