66072-16-0 95325-56-7 Isocyanic acid, polymethylenepolyphenylene ester, alpha-hydro-vpi-hydroxypoly(oxy-1,4-butanediyl) polymer Isocyanic acid, polymethylenepolyphenylene ester, polymer with alpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl)