低含盐量月桂酰胺丙基甜菜碱的合成及性能研究  

Synthesis and properties of lauroylamidopropyl betaine with low salt content

作　　者：鞠洪斌[1] 耿涛[1] 姜亚洁[1] 王亚魁[1] 

机构地区：[1]中国日用化学工业研究院,山西太原030001

出　　处：《印染助剂》2017年第4期12-15,共4页Textile Auxiliaries

基　　金："十二五"国家科技支撑计划项目(2014BAE03B00);山西省科技攻关项目(20130321019-02);山西省专利转化与推广项目(20051009)

摘　　要：以月桂酸、N,N-二甲基-1,3丙二胺、氯乙酸钠为起始原料,通过两步反应——酰化反应和季铵化反应,合成了低含盐量的月桂酰胺丙基甜菜碱,并通过FTIR、~1HNMR等对其结构和主要性能进行了测定。试验结果表明,产品活性物质量分数达到82.00%,NaCl质量分数明显降低,配制成30%的活性物溶液后,NaCl质量分数仅为1.79%,未反应胺质量分数为0.30%,水溶液的最低表面张力为26.76 mN/m,cmc为3.65 mmol/L,30%水溶液的粘度为88.81 mPa·s。Lauroylamidopropyt betaine with low salt content was synthesized from lauric acid, N,N-di- methyl-1,3-diaminopropane and sodium chloroacetate by two-steps, amidazation and quaternization. The structure and main properties of products were determined by FTIR and ^1HNMR. The results showed that the contents of active substance reached 82.00% and NaCI mass fraction decreased significantly. When the active substance solution was 30%, the mass fraction of NaCl was only about 1.79%, and the mass fraction of unre- acted amine was 0.30%. At the same time, the lowest surface tension of solutions was 26.76 mN/m, cmc was 3.65 mmol/L and viscosity was 88.81 mPa.s.

关 键 词：月桂酰胺丙基甜菜碱 两步反应 低盐质量分数 表面张力 

分 类 号：TQ423[化学工程]