均相反应制备桐油酸工艺的研究  

Study on preparation technology of eleostearic acid by homogeneous reaction

作　　者：李妮[1] 杨晶[1] 麻文杰 周尽花[1] 孙汉洲[1] 

机构地区：[1]中南林业科技大学经济林培育与保护省部共建教育部重点实验室,湖南长沙410004

出　　处：《中南林业科技大学学报》2014年第4期114-117,共4页Journal of Central South University of Forestry & Technology

基　　金：国家科技部林业公益性行业科研专项:桐油和桐枯深加工关键技术研究与示范(项目编号:201304603);长沙科技局重点项目:油桐产业化升级关键技术研究与示范(项目编号:K1009015-11)

摘　　要：桐油酸是一种重要的桐油衍生物,主要用于涂料领域,提高涂膜的性能。研究了溶剂皂化酸化法制备桐油酸的工艺条件。适宜的工艺条件为:桐油在甲醇与水的混合溶剂中进行皂化反应,溶剂比V(甲醇)∶V(水)为2∶1,物料比n(桐油)∶n(KOH)为1∶3.5,在75℃下皂化反应1.5 h。桐油酸产品收率为98.2%,酸值为199.8 mg/g。Eleostearic acid is a kind of important derivative of Tung oil and is mainly used in coating fields 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 saponification 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.

关 键 词：桐油酸 桐油 均相反应 制备工艺 

分 类 号：S794.3[农业科学—林木遗传育种] TS221[农业科学—林学]