Study on the Performance of Sodium Methyl Cocoyl Taurate and Its Application in the Shampoo

The effects of pH and water hardness on the foaming properties of sodium methyl cocoyl taurate and its performance in combination with zwitterionic surfactants were investigated.The irritation of sodium methyl cocoyl taurate and its application in a shampoo formula were also studied.According to the result of experiment,sodium methyl cocoyl taurate had a wide pH stability range and good resistance to hard water,and it showed good synergistic thickening effect with betaine surfactants,especially when mixed with acyl hydroxysulfo betaine;The skin cholesterol dissolution test and red blood cell hemolysis test showed that its irritation was very low.Sodium methyl cocoyl taurate was applied to the transparent shampoo formula,and the sulfate-free transparent shampoo thus prepared had good stability and low eye irritation.It was both mild and non-irritating to skin.

结晶型氨基酸洁面膏的制备及性能研究

以椰油酰甘氨酸钾为主要表面活性剂制备了一款结晶型氨基酸洁面膏。在固定主氨基酸表面活性剂含量的情况下,讨论了甘油含量、酸化程度、乳化剂以及盐的添加量对氨基酸洁面膏稳定性的影响,以及辅助氨基酸表面活性剂椰油酰甲基牛磺酸牛磺酸钠在配方中的应用和性能研究,并对最终配方进行消费者评价。结果表明,该氨基酸洁面膏性能稳定,泡沫丰富、温和,肤感清爽,工艺简单,能够满足生产以及应用要求。

椰油酰基甲基牛磺酸钠的合成与性能

以椰子油酸和N-甲基牛磺酸钠为原料,经酰氯化和Schotten-Baumann缩合反应合成了椰油酰基甲基牛磺酸钠。考察了缩合工艺中反应温度、反应时间、投料比、催化剂种类和溶剂用量等对反应的影响,得到了最佳缩合反应工艺。性能分析表明,该产品具有较低的表面张力和临界胶束浓度,发泡性能优于相同进口产品,抗硬水性能良好。

甲基椰油酰基牛磺酸钠的性能研究及在洗发水中的应用

探究了pH、水硬度对甲基椰油酰基牛磺酸钠的泡沫性能的影响及与两性表面活性剂复配性能,同时考察了甲基椰油酰基牛磺酸钠的刺激性及在洗发水配方中的应用。结果表明,甲基椰油酰基牛磺酸钠的pH稳定性范围宽、耐硬水性能好,与甜菜碱类两性表面活性剂有较好的协同增稠作用,特别是与酰基羟磺基甜菜碱的复配增稠效果更佳;皮肤胆甾醇溶解实验和红细胞溶血实验表明其刺激性很低;将甲基椰油酰基牛磺酸钠应用到透明洗发水配方中,制得的无硫酸盐透明洗发水稳定性好,眼刺激性低。

椰油酰基N-甲基牛磺酸钠半连续缩合制备工艺研究

采用N-甲基牛磺酸钠与椰油酰氯通过半连续缩合工艺合成了椰油酰基N-甲基牛磺酸钠,考察了反应温度、N-甲基牛磺酸钠与酰氯和液碱摩尔比、N-甲基牛磺酸钠添加量、酰氯滴加速度对酰氯转化率影响,得到了较优工艺参数。结果表明,采用半连续缩合制备工艺,酰氯选择性在97.5%以上,N-甲基牛磺酸钠转化率在93.0%以上,游离酸在1.0%以内,产品纯度显著高于间歇式缩合工艺,可以提高生产效率75%以上。