2-Oxepanone, hexanedioic acid, 1,4-butanediol, 2,2'-oxybisethanol, 1,1'-methylenebis(4-isocyanatobenzene) polymer 41366-44-3 Hexanedioic acid, polymer with 1,4-butanediol, 1,1'-methylenebis(4-isocyanatobenzene), 2-oxepanone and 2,2'-oxybis(ethanol)