2-Oxepanone, polymer with alpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl), 4,4-methylenebis(benzenamine), 1,1-methylenebis(4-isocyanatobenzene) and 1,1-methylenebis(4-isocyanatocyclohexane)
2-Oxepanone, polymer with alpha-hydro-omega-hydroxypoly(oxy-1,4-butanediyl), 4,4-methylenebis(benzenamine), 1,1-methylenebis(4-isocyanatobenzene) and 1,1-methylenebis(4-isocyanatocyclohexane)