Study on Synthesis and Characterization of UV-cured Modified Epoxidized Soybean Oil Oligomers

In this paper,two kinds of basal resins,the modified epoxidized soybean oil oligomers,for UV-cured coatings and inks were studied.The epoxidized soybean oil(ESO) was modified by acrylic acid(AA) and maleic anhydride(MA).As a result,oil-soluble acrylated epoxidized soybean oil(AESO) and water-soluble maleinated acrylated epoxidized soybean oil(MAESO) were gained respectively.The resulting products were characterized by FTIR and 1H-NMR.With the addition of UV initiator,these two products could be cured in a short time under the UV light.The suitable conditions of the synthesis of these two oligomers have been discussed.For AESO,the best reaction conditions are ESO:AA=1.2:1(by mol.),the mount of the catalyst Ph3P is 1%,reaction temperature is 120℃;for MAESO the best reaction conditions are AESO:MA=4:1(by mol.),the mount of the catalyst tetrabutyl titanate is 1%,reaction temperature is 90℃.