| 摘要 |
<p>The invention provides a method for the preparation ofα-sulfo fatty acid alkylester alkanolamine salt comprising: sulfonating a fatty acid alkyl ester to obtain a sulfonated product, reacting an alcohol and a hydrogen peroxide with the sulfonated product to obtain a reactive product, adding an aqueous alkanolamine solution to the resultant reactive product to obtain a neutralized product having a pH of 2 to 6.5; condensing the neutralized product to obtain an aqueous paste containingα-sulfo fatty acid alkylester alkanolamine salt. According to the present invention, color deterioration can be inhibited at the time of condensation during preparation of alkanolamine salt ofα-sulfo fatty acid alkylester.</p> |
