| 摘要 |
Free primary OH groups of the partial esters are sulphated using SO2. As solvent, at least one compound is employed which has a boiling point of 40 to 200 DEG C at a pressure of 98 kPa, is liquid under the reaction conditions chosen and, apart from at least one trivalent N atom which is exclusively connected to C atoms, only contains C, H and, if appropriate, ether oxygen atoms. The sulphated partial esters and their alkali metal or alkaline earth metal salts are obtained with good colour and in good yield, and without the formation of relatively large amounts of salts which pollute the waste water. They can be used, for example, for detergent raw materials, synthetic soaps and flotation aids. |
