US1972458A - Dry powdered soap composition - Google Patents

Description

Patented Sept. 4, 1934 UNITED STATES PATENT OFFICE 1,972,458 DRY POWDERED SOAP COMPOSITION Leonard R. Phillips, Samar-ville, Mass.

No Drawing. Application March Serial No. 600,362

3 Claims. (01. 87-5) This invention relates to a dry soap composition adapted, when it is mixed with and certain of the profitable shipping Hence the hand soap industry is a localized one.

It is' an object of the present invention to prodistances from its place of manufacture.

It is highly desirable that the soluble constitposition without the alkali would be but very slowly soluble in cold water. Hence a soap composition containing an alkali for rendering the composition readily soluble in cold water is a furuble in cold water than others, depending mainly upon the surface area of the particles. position also contains a suitable proportion of a finely divided inert material having abrasive properties such-as wood pulp fibres,-sawdust and Sawdust 8 ounces Soap 16 ounces Vegetable oil 1 ounce Caustic soda ounce Rosin ounce Coloring q. s.

This amount when introduced into three quarts of water is suflicient to make approximately a gallon of soap paste.

In the process of making the dry composition the sawdust is tumbled particles do not adhere together. The tumbling operation may take about eight minutes dependin' inexpensive paper In using the compositionit is intended that the tained. The composition can then be packaged or paste board cartons.

contents of a carton shall be placed in a can or other receptacle with a specified amount of cold water, three quarts of the amount above given, and stirred until the dispersion of the composition throughout the mass of water is obtained. The soap and soluble components of the composition dissolve rapidly in cold water and in about fifteen minutes, forming a jel or paste that is ready for use.

The alkali contributes mainly to the rapid dissolving of the soap in cold water. If the alkali were not used it would take severaldays for the soap to dissolve in cold water, without agitation, and when a jel ultimately formed it would be found that a large amount of the water has separated out of the jel.

While caustic soda is herein employed as the alkali, caustic potash or sodium carbonate can be employed. In general any alkali is satisfactory although the amount of alkali that is used will depend upon the characteristics of the alkali. More sodium carbonate will be required than caustic soda, for instance.

The vegetable oil and rosin is beneficial in several respects. Both more or less neutralize the caustic soda so that the action of the paste on the hands is not as harsh as it would be without these ingredients. The oil is rendered more miscible in the water by the alkali. The rosin is rendered more soluble by the alkali and any rosin that does not entirely dissolve in the paste is found to have a softening action upon paint and the like so that the cleaning action of the paste is enhanced. The manner in which the oil is applied to the sawdust prevents the sawdust from stratifying or collecting in one zone during the formation of the paste and maintains the sawdust dispersed uniformly throughout the water mixture at the time it begins to jel. Any vegetable oil appears to be satisfactory, but a mixture of equal parts of cotton seed and sassafras oil is preferred, the sassafras oil being desirable because of its odor.

Any coloring can be employed, the amount dematter can be eliminated if color desired- The coloring not wanted.

It the coloring matter is in liquid form it can be introduced at the time of mixing the soap powder and oiled abrasive; liquid is so small that it does not appreciably change the dryness of the mixture.

Instead of using a soap that contains but a pending upon the relatively small amount-of free alkali, a soap can large amount of alkali above described. 4

be used that contains a sufficient for the purpose I claim:

1. A soap composition in dry powder form adapted to form a homogeneous paste upon the addition of water, said composition containing a major proportion of powdered soap, sawdust in an amount sufficient to constitute an abrasive, sufficient vegetable oil to coat the sawdust particles to cause them to remain dispersed throughout the paste formed by the addition of water, an alkali such as caustic soda in an amount sufflcient to render the oil water-miscible, and a neutralizing medium such as powdered rosin in an amount suflicient to neutralize the excess dissolved alkali in the paste.

2. A soap composition in dry powder form adapted to form a homogeneous paste upon the addition of water, said composition containing about two parts of powdered soap, about one part of sawdust, a vegetable oil in an amount suflicient to coat the particles of sawdust to cause them to remain dispersed through the paste formed by the addition of water, an alkali such as caustic soda in an amount sufficient to render the oil watermiscible, and a neutralizing medium such as powdered rosin in an amount sufficient to neutralize the excess dissolved alkali in the paste.

3. A soap composition in dry powder form adapted to form a homogeneous paste upon the addition of water, said composition containing the following materials in about the proportions stated: powdered soap 16 ounces, sawdust 8 ounces, vegetable oil 1 ounce, alkali as caustic soda 7 ounce, and powdered rosin ounce.

LEONARD H. PHIILIPS.

and the amount of.