Process for the direct production of soap having the desired concentration of fatty acid from neutral fats
AssigneeMeccaniche Moderne S.r.l. Chemical Plants Division
InventorCarlo Pisoni
Life of this patent
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Abstract
A process for the direct production of soap having the desired concentration of fatty acid from neutral fats by reacting, at a temperature higher than 100° C. and under pressure, an aqueous solution of an alkaline hydroxide or mixture of alkaline hydroxides having a quantity in moles equal to that of the fatty acids contained in the fat and/or oil and a quantity of water equal to that required to obtain the desired concentration of fatty acids in the final soap and heated at a temperature sufficient to obtain a clear solution, with the fat and/or oil previously heated at a temperature at least equal to that of the aqueous solution of the alkaline hydroxide.
Claims9
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 50° C. and to 150° 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 100° C.
Dependencies are inferred from the claim text.