Patent ID: 8168580
Filing Date: 2012-05-01
Classification: C07C,C11D

Abstract:
1. A method for producing an aqueous α-sulfo fatty acid ester salt solution in which a solid component (a) in the form of an α-sulfo fatty acid alkyl ester salt and a component (b) in the form of an inorganic sodium salt and/or inorganic potassium salt are dissolved in a solvent in the form of water; wherein, the solid component (a) is dissolved in the solvent in the form of water under temperature conditions of 50° C. or higher while maintaining the following condition (i) or (ii): (i): the concentration of the component (a) is 35% by weight or less in the case where the total concentration of sodium ions and potassium ions derived from the component (b) is less than 0.55 mol/kg, or (ii) the concentration of the component (a) is 55% by weight or less in the case where the total concentration of sodium ions and potassium ions derived from the component (b) is 0.55 mol/kg to less than 1.8 mol/kg.