Abstract: Three kinds of polyols were synthesized from hydrogenated terpinene-maleic ester type epoxy resin(HTME)and secondary amines(diethanolamine(DEA), N-methylethanolamine(MEA) and diethylamine(DeA)). They can be used in place of the commonly used polyols to prepare two-component polyurethanes.When reacted at 60-70℃ for about 2 h, products of good quality can be obtained by using ethanol as solvent in an amount about 40% by weight based on the weight of reactants. Among the polyols synthesized under the optimum conditions, HTME-D-EA polyol has the largest hydroxyl value of(300±20)mg/g, HTME-MEA polyol has a value of(260±20)mg/g, and HTME-D-eA polyol has the smallest hydroxyl value of(200±10)mg/g. Because of the low chemical activity of DeA reacting with oxirane ring of HTME, the residual epoxy value of HTME-D-eA polyol is comparatively large, in contrast with those of other two polyols. The chemical structures of the polyols from HTME were characterized by chemical and FT-IR spectrometric methods.

Key words: hydrogenated terpinene-maleic ester type epoxy resin, polyol, synthesis, characterization