(2-十八酰氧基-3-氯丙基)十二烷基二甲基氯化铵的合成及性能  

SYNTHESIS AND PROPERTIES OF(2-OCTADECYL ACYLOXY-3-METHYL CHLORINE)DODECYL DIMETHYL AMMONIUM CHLORIDE

作　　者：胡应燕[1] 郭睿[1] 彭莉[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《精细石油化工》2009年第4期22-25,共4页Speciality Petrochemicals

基　　金：陕西省科技厅工业攻关计划项目(2007K07-08)

摘　　要：实验以十二烷基二甲基叔胺和环氧氯丙烷为原料,在酸性条件下合成中间体(2-羟基-3-氯丙基)十二烷基二甲基氯化铵,再与硬脂酰氯反应,生成(2-十八酰氧基-3-氯丙基)十二烷基二甲基氯化铵(HYFA)硬脂酸酯季铵盐阳离子表面活性剂。在反应温度40℃,反应时间3 h的条件下,中间体的产率为80.21%;反应温度65℃,反应时间7 h,产物的产率为83.57%,krafft点<0℃。通过红外光谱与元素分析确证了产物结构。采用表面张力法和电导法测定了产物的临界胶束浓度cmc分别为8.91×10^(-4)mol/L和8.74×10^(-4)mol/L。（2-Octadecyl acyloxy-3-methyl chlorine） dodecyl dimethyl ammonium chloride（HYFA） was synthesized with stearyl chloride and the intermediate prepared with dodecyl amine and epoxy chloro- propane in acidic conditions. At 40℃ and reaction time 3 h, the yield of the intermediate was 80. 21%. At 65℃ and reaction time 7 h, the yield of HYFA was 83.57% with Krafft point〈0 ℃. The chemical structure of the product was identified by IR spectrum and elemental analysis. The critical micelle concentration of HYFA solution was measured with methods of surface tension and conductivity measurements. They were 8.91× 10^-4 mol/L and 8. 74× 10^-4 mol/L, respectively. The results showed that HYFA exhibited higher surface activity.

关 键 词：季铵盐 阳离子表面活性剂 合成 十二烷基二甲基叔胺 环氧氯丙烷 

分 类 号：TQ423.121[化学工程]