Synthesis and Application of N-Methyl-N-Ethy-N,N-Bis(2-Stearoyloxy)Ethyl Bromide

The N-methyl-N-ethy-N,N-bis(2-stearoyloxy)ethyl bromide was successfully synthesized by a novel route,which could be described as quaternization first,and then sterification.The effects of material molar ratio,reaction temperature and reaction time on the intermediate product N-methyl-N-ethyl-N,N-bis(2-hydroxyethyl) ammonium bromide were examined.The final product N-methyl-N-ethy-N,N-bis(2-stearoyloxy)ethyl bromide was successfully synthesized with high yield(The active substance content of product was more than 98%) by reacting with stearyl chloride.The structure of the quaternary products was characterized using IR,MS and 1H NMR.The study on softening showed that the performance of prepared esterqueats is better than that of the D1821 former is as better as the latter.