The paper reports the results of studying the kinetics of DGEBA reactions with maleic anhydride catalyzed by N, N-dimethyl aniline (DMA). This stuffs are used as phot oelastic model materials. The origination of monoester was studied separately on a model reaction of maleic anhydride with isopropyl alcohol. The subsequent reaction of epox y groups with monoester was examined on a system of epoxy resin and isopropyl maleic monoester. The curing process depends significantly on the content of hydroxyl groups in the system., František Kolář and Jaroslava Svítilová., and Obsahuje bibliografické odkazy