聚乙二醇型双联表面活性剂的合成工艺研究

以硬脂酸和聚乙二醇为原料,经酯化后生成聚乙二醇双酯。再经磺化剂氯磺酸的磺化作用下得α-磺基硬脂酸聚乙二醇双酯,加NaOH中和后成盐,形成α-磺基硬脂酸聚乙二醇双酯钠盐。实验结果表明,在催化剂用量为2.0%(基于反应体系的质量分数),酸醇的量比为2.5∶1.0,反应时间为4小时,反应温度140~150℃时,聚乙二醇双酯收率达83%。磺化剂氯磺酸与双酯的量比为2.4∶1.0,反应时间为1小时,反应温度为60~70℃,α-磺基硬脂酸聚乙二醇双酯收率为96%。α-磺基硬脂酸聚乙二醇双酯钠盐的总收率为79.7%。

Study on the synthesis of polyethylene glycol type double surface active agent

Become assembling two esters of glycol with the stearin is the raw material with assembling glycol through esterifies young man. Under the again dose sulphonate effect of chlorine sulfonic acid through the sulphonate α-sulphur base stearin assembles two esters of glycol , adding the back one-tenth salt of neutralization of NaOH＇s , formationα-sulphur base stearin assembles two ester sodium salt experiment object lists of glycol the Ming Dynasty , and at the catalyzer consuption serving as 2.0%（ baseding on react the quality fraction of system ） , sour mellow wine is measured the reaction time than serve as 2.5 ﹕s 1.0, serve as 4 hours , and assembles that two ester rates receiving of glycol reach 83%during 140-150℃s＆#39; reaction temperature. Serving as in the capacity of sulphonate agent chlorine sulfonic acid and two esters reaction time 1 hour , the reaction temperature is 60-70℃s than serve as 2.4﹕s 1.0, , andα-sulphur base stearin assembles that two ester rates receiving of glycol are 96%. The rate receiving always thatα-sulphur base stearin assembles two ester sodium salt of glycol is 79.7%.