Patent ID: 6605586
Filing Date: 2003-08-12
Classification: C11D

Abstract:
A process for the production of soap from neutral fats by reaction of fats and/or oils with an alkaline hydroxide or mixture of alkaline hydroxides, in the absence of a vacuum concentration spraying step, which comprises the steps of:(a) preparing an aqueous solution of the alkaline hydroxide or the mixture of alkaline hydroxides having a quantity in moles equal to one of the fatty acids contained in the fat and/or oil and a quantity of water equal to the one required to obtain the required concentration of fatty acids in the final soap; (b) heating the thus obtained aqueous solution at a temperature exceeding 50Â° C. and to 150Â° C. to obtain a clear solution of the alkaline hydroxide; (c) heating the fat and/or oil at a temperature at least equal to one of the alkaline hydroxide aqueous solution; (d) mixing the hot and liquid fat and/or oil with the hot aqueous solution of the alkaline hydroxide in a pressure reaction; and (e) completing the reaction under pressure at a temperature exceeding 100Â° C.