| 摘要 |
<p>The object of the present invention is a process for preparing a tenside mixture according to which a mixture which contains an alkali metal salt of alkyl sulfonic acid, and optionally an alkali metal salt of ethoxylated alkyl sulfate is treated with an excess of concentrated sulfuric acid so that the temperature of the mixture does not exceed appr. 35 °C, the reaction mixture is let to separate into two layers, the layer containing organic acids is separated and neutralised with di- and/or triethanolamine in order to prepare the di- and/or triethanolamine salts of the said acids, and optionally water and convential additional agents and adjuvants are added. The starting mixture can, according to an advantageous embodiment, contain also other tensides and additional components.</p> |
