2-Oxepanone, polymer with 1,4-butanediol, 4,4-diisocyanato-3,3-dimethyl-1,1-biphenyl, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 2,2-(1,4-phenylenebis(oxy))bis(ethanol)
2-Oxepanone, polymer with 1,4-butanediol, 4,4-diisocyanato-3,3-dimethyl-1,1-biphenyl, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 2,2-(1,4-phenylenebis(oxy))bis(ethanol)