1,4-Butanediol, polymer with hexanedioic acid, 1,6-hexanediol, and 1,1'-methylenebis(4-isocyanatocyclohexane) 68527-40-2 Hexanedioic acid, polymer with 1,4-butanediol, 1,6-hexanediol and 1,1'-methylenebis(4-isocyanatocyclohexane)