A process for the production of basic magnesium sulphonates and the products obtained by this process.

摘要

A process for the production of basic magnesium sulphonates comprising carbonating a mixture containing: (a) an oil soluble sulphonate or sulphonic acid (b) a stoicheiometric excess of a magnesium compound above that required to react with (a) (c) a hydrocarbon solvent (d) a C1 to C5 alcohol and/or C3 to C6 ketone (e) water and (f) a reaction promoter wherein carbonation is effected between 50 DEG C and the reflux temperature of the mixture and is continued until from 80% to 120% of the stoicheiometric amount of carbon dioxide required to react with the excess magnesium compound has been passed through the reaction mixture and for sufficient time to ensure that from 70% to 90% of the carbon dioxide theoretically required to convert the excess of the magnesium compound to magnesium carbonate has been absorbed by the reaction mixture.