| 摘要 |
This invention relates to a process for preparing sulfonated lubricating agents for leather and tanned furs consisting of the steps of: (a) chlorinating natural or synthetic higher fatty acids or esters of higher fatty acids having chain lengths of from 8 to 24 carbon atoms containing olefinically unsaturated fractions, up to saturation of the double bonds; (b) sulfochlorinating the chlorinated product from step (a) with chlorine and SO2 at a temperature of from about 20 DEG to 90 DEG C., optionally under UV-radiation, for a time sufficient to obtain a compound having a chlorine content of from about 5 to 30 percent by weight and a content of SO2Cl groups of from about 1 to 20 percent by weight, the ratio of chlorine atoms to SO2Cl groups being from about 0.7:1 to 70:1; and (c) saponifying the product from step (b) to form a water-emulsifiable alkali metal, ammonium, or lower alkyl-ammonium salt of the product of step (b). |
