N. Li
2014
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Journal
Journal of Central South University of Forestry & Technology
Abstract
Eleostearic acid is a kind of important derivative of Tung oil and is mainly used in coating fi elds to improve the performance of coating films. The preparation conditions of eleostearic acid by solvent-saponification and acidification were investigated. The experimental results show that the optimum preparation conditions for eleostearic acid were as follows. The saponifi cation of Tung oil took place in mixed solvent with V(methanol) ︰ V(water) is 2 ︰ 1, molar ratio n(Tung oil) ∶ n(KOH) is 1 ∶ 3.5, 75 ℃ for 1.5 hours. Eleostearic acid's yield would reach 98.2 % with acid value 199.8 mg KOH/g under the optimum conditions.