摘要
以月桂酸为原料,经酰胺化、羧甲基化等合成了月桂酰胺醚羧酸盐(LAEC),考察了投料比、反应温度、反应时间等对羧甲基化反应的影响。最佳工艺条件为:n(月桂酸单乙醇酰胺):n(氯乙酸钠):n(NaOH)= 1.0:1.6:3.0,反应温度65℃,反应时间4 h,在此条件下,酰胺转化率达90%以上,产物的γcmc=2．529 mN/m,cmc=1．26 mmol/L,罗氏泡沫高度为183 mm,具有优良的表面活性。
Lauric amide ether carboxylate （LAEC） was synthesized by a series of reactions, such as amidation of lauric acid, carboxymethylation, etc. The influences of the ratios of the reactants, the amount of catalyst, the reaction temperature and the reaction time on the conversion in the carboxymethylation were investigated. The optimal conditions were： n（lauric acid monoethanol amide） ： n （sodium choloroacetic acid） ： n（sodium hydroxide） = 1.0： 1.6： 3.0, reaction temperature 65℃, reaction time 4.0 h. The conversion of lauric acid monoethanol amide was above 90%. The property＇s analysis indicated that the product had good surface activity in which γcmc = 2. 529 mN/m, cmc=1.263 mmol/L and the height of ross foam was 183 mm.
出处
《精细石油化工》
CAS
CSCD
北大核心
2006年第3期44-47,共4页
Speciality Petrochemicals
基金
河南省科技攻关项目(0224380080)
关键词
月桂酰胺醚羧酸盐
月桂酸单乙醇酰胺
氯乙酸钠
酰胺醚羧酸盐
羧酸盐
lauric amide ether carboxylate
lauric acid monoethanol amide
sodium choloroacetic acid
amid ether carboxylate
carboxylate
