| 摘要 |
Mixed nonionic/anionic surfactants which comprise polyhydroxy fatty acid amides and anionic surfactants of the alpha -sulfonated fatty acid esters, alkyl ethoxylated sulfate, alkyl ethoxylated carboxylate, alkyl sulfate or sulfated alkyl polyglycoside types are used in various cleaning functions. Thus, C10-C22 fatty acid N-alkyl glucamides are combined with such anionic surfactants, a soap and a source of calcium ions. The resulting mixtures exhibit exceptionally low interfacial tension, especially in the presence of calcium ions. Mixtures of such nonionic/anionic/soap/calcium systems surfactants with conventional ethoxylated alcohol surfactants provide excellent removal of cosmetic stains from fabrics. |
