A series of multifunctional cycloaliphatic glycidyl ester and ether epoxy resins were synthesized by reaction of condensed rosin acid-formaldehyde resins with epichlorohydrin. The chemical structure of the produced resins was determined by IR and 1 H-NMR analysis. The molecular weight of the produced resins was determined by gel permeation chromatography (GPC). A series of poly-(amide-imide) hardeners were prepared from condensation of Diels-Alder adducts of rosin acidmaleic anhydride and acrylic acid with triethylene tetramine and pentaethylene hexamine. These amines were also condensed with Diels-Alder adducts of rosin ketones. The curing exotherms of the produced epoxy resins with poly(amide-imide) hardeners were investigated. The data of mechanical properties, solvent and chemical resistance indicate the superior adhesion of the cured epoxy resins. TechniquesSynthesis of the Diels-Alder adduct of DAK Synthesis of maleodiabietyl ketone (MA/DAK). A 250 ml flask equipped with stirrer, thermometer, condenser and N 2 inlet was charged with (138 g, 0.25 mol) DAK and (50 g, 0.5 mol) MA. The reaction was carried out during 8 hr at different reaction temperatures. The reaction mixture was heated under N 2 at 403 K for 1 hr, at 418 K for 2 hr, at 433 K for 3 hr and at 453 K for 2 hr. The reaction mixture was cooled and dissolved in diethyl ether. The unreacted MA was removed by

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