68867-77-6 Hexandioic acid, 1,2-ethanediol, methylenebis(4-cyclohexyl isocyanate), phthalic anhydride, 1,6-hexanediol, 1,3-propanediamine polymer Hexanedioic acid, polymer with 1,2-ethanediol, 1,6-hexanediol, 1,3-isobenzofurandione, 1,1'-methylenebis(4-isocyanatocyclohexane) and 1,3-propanediamine