| 摘要 |
D 8663 - 16 Process for the preparation of alkali metal salts of ether-carboxylic acids A process for the preparation of alkali metal salts of ether-carboxylic acids by oxidation of etheralcohols in an aqueous phase with oxygen or gases containing oxygen at elevated temperatures in the presence of alkali metal hydroxides and noble metal catalysts, in which an aqueous solution, containing an alkali metal hydroxide solution, of the ether-alcohols is brought into contact in a thin layer on a solid carrier or in the form of fine particles with oxygen or the gases containing oxygen as a continuous phase, the concentration of the ether-alcohols in the aqueous phase being in the range from 0.1 to 15% by weight, based on the total weight of the aqueous phase, enables aqueous solutions of the alkali metal salts of the ether-carboxylic acids in high concentrations to be prepared. |
