US1278518A - Sulfur soap. - Google Patents

Description

252 cowosmous,

TED stra'riis PATENT OFFICE.

TOMOICHIRO TANAKA, OF HONGO-KU, TOKYO, JAPAN.

SULFUR SOAP.

No Drawing.

a sm. ll' quantit'y o Vaseline, the whole be-- ing kneaded together aiid'ii ihde into a solid form. The object of the invention is to produae'a sulfur soap which does not emit the disagreeable smell of sulfureted hydrogen when using it, and which gives the same beneficial medicinal efl'ect as that derived from the use of bath water of a natural sulfur spring.

The undermentioned three kinds of materials are used in the preparation of the sulfur soap:

A. A neutral soda soap stock produced by the saponification of 3 parts of cocoanut oil and 7 parts of beef talloW, the soap stoc being cut into thmeets and dried.

B. A neutral soda resin soap prepared from the bst grade of resin is boiled into a concentrated solution, to which is added an equivalent quantity of refined flower of sulfur and well stirred together; the whole mixture is kept in a melted state at a temperature of above 120 centigrade for effecting the thorough mixture of the ingredient substances, and afterward cooled down to form a pasty mass.

C. A mixture produced by kneading together 10 parts of sodium perborate and 2 parts of Vaseline, which is melted by the aid of gentle heat just to the degree of melting the Vaseline and is sufiiciently kneaded together.

The required sulfur soap is then produced by compounding 10 narts of No. A. preparation with 2 parts of No. B and 1 part of No. C, to which is added an appropriate amount of perfume for scenting it, and pigments for coloring the soap. The compounding and kneading of the ingredients is done by a pair of rollers, and the soap made into a tablet by stamping on the containing mold, in the same manner as in the ordinary process of making soap.

When uslng the soap prepared 1n the Specification of Letters Patent. Patented Sept. 10, 1918.

Application filed April 16, 1918. Serial No. 228,825.

above way with warm water the sulfur contained in it in the minutest state of division intimately mixes with the lather produced by the soap and exerts an action like that possessed by sulfur in a colloidal state. This sulfur unites chemically with the caustic soda produced by the hydrolytic action of the water upon the fatty compounds of the soap, forming sulfid of sodium to some ex tent, and the whole gives the same beneficial medicinal effect to the users of the soap as that obtained from the use of water ofa natural sulfur spring.

A part of the sodium sulfid produced in the above way would react chemically with the organic acids and acid salts produced also by the decomposition of the-substance of the soap. Sulfureted hydrogen, which might possibly be produced under the above mentioned conditions, difiuses into the soap lather; perborate of sodium, originally protected from the action of water, by the enveloping action of the Vaseline contained in the soap gradually mingles with the water and produces peroxid of hydrogen. Furthermore this peroxid of hydrogen splits up, generating free oxygen. The oxygen in an active free state produced by subsequent decomposition, together with a sort of catalytic oxidizing action of the resin soap, changes the sulfureted hydrogen into free sulfur; in this way the evolution of the disagreeable odors produced from sulfureted hydrogen is entirely obviated.

The proportion above given of the various ingredient substances for producing the sulfur soap is one example of the process, and may be varied according to circumstances; also perborate of sodium in the above recipe may be replaced by other salt compounds which have the power of liberating active oxygen.

Claims:

1. A process of producing soap, which consists in mixing a soap stock with a soda resin and sulfur soap, and incorporating with the mixture Vaseline and a chemical which liberates oxygen when mixed with water.

2. A process of producing soap, which consists in mixing a soap stock with a soda resin soap and refined flowers of sulfur, and incorporating the mixture with sodium perborate and Vaseline.

3. A process of producing soap, which consists in mixing a neutral soap stock with arner;

r r l a neutral soda resin soap and refined flowers of sulfur, and incorporating the mixture with sodium perborate and Vaseline.

4. A process of producing soap, which consists in mixing a neutral soap stock with a neutral soda resin soap and refined flowers of sulfur, and incorporating the mixture with sodium perborate and Vaseline, all in the proportions specified.

5. A process of making soap, which consists in mixing a neutral soap stock containand incorporating the mixture with sodium 13 perborate and Vaseline.

In testimony whereof I have signed my name to this specification.

TOMOICHIRO TANAKA.

Copies of this patent may be obtained for live cents each, by addressing the Commissioner of Patents, Washington, D. O.