Synthesis of UV curing epoxidized soybean oil acrylate
Based on the chemical activity of the epoxy ring in epoxidized soybean oil (ESO) , UV curable low viscosity epoxy acrylate was prepared at the presence of a composite additive system composed of a new catalyst and inhibitor. The influences of amount of catalyst and inhibitor in the composite additive system, the temperature and time of reaction on the synthetic reaction were discussed. The results showed that the optimum reaction conditions were as follows: reaction temperature 120 ℃, reaction time 5 h, triphenyl phosphine (1.2％) and 90SD (0. 15％ ) as the composite additive system. Under the optimum conditions, the obtained epoxy acrylate had ideal appearance and characteristics , and its UV - curing rate was fast, the cured film had better flexibility and adhesion force and its hardness rached 3 H.
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