US2167180A - Brushless shaving cream - Google Patents

Description

Patented July 25, 1939 UNETED STATEfi raiser arr-ice BRUSmlESS snnvmc.

Wolf Kritchevsky, Chicago, 1111., assignor to Kit Products Corporation-Chicago, HlL, a corporation of Delaware No Drawing. Application September 26, 1936,

Serial No. 102,700 a v 15 Claims. I (oi. 167 85) My invention relates in general to shaving cream. It relates more in particular to the so- I eral a two-fold object. They soften the hair as,

well as the skin on the face by emulsifying the natural oil present on the skin, and they also lubricate the skin so that the razor will pass over the same easily.

Ordinary shaving soaps are made empirically without any thought of these two functions, but it will be obvious that they must to some extent perform boh functions in order to be usable. Those skilled in the art have found that the use of ordinary soaps is not satisfactory and accordingly attempts have been made in the past to produce a shaving cream which would perform both functions required in a more satisfactory manner. These creams are made usually from free fatty acid, usually stearic acid, and suficient scan to emulsify the stearic acid in water. Some spermaceti wax or paraifin or other waxes or similar compounds have also been used to make the cream non-vanishing. A mixture of types of substances described emulsified with a relatively large amount of water (sometimes with some glycerin added) is well known. When spread on the face, they leave a substantial deposit of the emulsified stearic acid and waxes which act as a lubricant to prevent the razor from pulling crl scratching.

In most of these preparations, a thorough washing of the face is first necessary to remove the natural oils. Otherwise the cream of itself would not soften the beard. As a general rule, these creams are fairly efiicient but they are still subject, to considerable improvement to remedy their outstanding defects. One diinculty is that in order to function satisfactorily as a lubricant they must have a relatively large amount of fats or waxes inrelation to the soap present and this causes them to be too greasy, making it hard to remove them from the face and from the razor. When the amount of Wax in proportion to the soap present isdecreased so that they can readily gresses.

l1 have found a class of chemical substances,- 15

such as halogen groups andalkyl groups with one or more carbon'atoms but there must be at least nuclearhydrocarbons of the aromatic or hydrotained particularly good results if the polynuclear factorily when the water employed on the face is cold.

The principal object of my invention is the provision of an improved shaving cream.

Another object is. the provision of a shaving 5 cream which obviates all of the difficulties hereinabove set out. v

Another object is the provision of a shaving cream which will softenthe beard even though the beard has been washed only slightly or not at all before the application of the cream.

Other objects and features of the invention will A be apparent as the detailed description prowhich, as far as I how, has never been employed in brushless' shaving creams heretofore, to be highly efficacious in brushless shaving creams, the major ingredients of which are fatty acid such as stearic acid and water and the entire product ,20 emulsified completely. The emulsion-product so produced has very excellent properties in softening the beard to a much greater extent thanthe conventional brushless shaving creams heretofore employed. It. has a great advantage in being readily washed from the razor, while the remain-'- der left on the face after shaving is as readily removed from the face by washing. The-product also can be made of such consistency that, while it may be freely washed from the razor, it. will not possess the undesirableproperty of falling from. the razor during shaving. The class of compounds which I have found useful for improving brushless shaving creams are the aromatic sulphonic acids or the sulphonic acid. salts wherein the sulphonic radical is attached directly to the aromatic nucleus. The aromatic nucleus may also contain other groups one sulphonic radical attachedv to the aromatic. nucleus. More particularly, the compounds are sulphonated derivatives of benzene, toluol, polyaromatic series in which theremay, if desired, be one or more aliphatic,aromatic-aliphatic, or hydro-aromatic radicals attached to thearomatic derivatives contain alkyl, aralkyl or hydro-aromatic radicals containing three carbon atoms and upwards." I i I Among the compounds of this class which are e fective for my purposes are benzene sulphonic 55 acid, sodium salt, toluene sulphonic acid, sodium salt, iso-propyl naphthalene sulphonic acid and its salts such as the sodium salt, alpha-naphthalene sodium sulphonate, beta-naphthalene sodium sulphonate, butyl naphthalene sulphonic acid and its salts, anthraquinone sulphonates, benzyl naphthalene sulphonic, acid and its salts, sodium salt of tetra-hydro-naphthalene sulphonate, and

sodium salt of naphthionic acid. Still other satisfactory compounds may be illustrated by the following structural formulae:

"'SOgNl I cnon-cn0n HO CHOH V I cnon-onon SOaNa W CHf-CH -CHaOH we OaNa As described above, the sulphonic acid deriva-- tives may also contain other substituents and these may be such groups as-hydroxyl groups,

amino groups, nitro groups. and halogen groups,

and the side chain may'also be attached to such substitutents as, for example, in the case of the following compound:

NIH-43 K.

' I Us OaNa It will be understood that the sulphonic acid derivatives may be employed in,the form of their free acids or their salts, particularly the alkali metal salts such as sodium and potassium.

The creams consist for the most part of a fatty body like stearic acid or any other-normally solid fatty acid like palmitic acid, or similar normally solid higher organic acids, with or without a solid fat like hydrogenated fats, lard, vegetable fat, mineral fat or paraffin or any other fat or wax such as carnauba, synthetic waxes and the like. The quantity of the fatty body may range from 5 to 30%, depending upon the hardness of the particular vehicle. A certain proportion of soap may be used, ranging from 2 to 10%, or may be omitted. Caustic alkali, such as caustic potash,

may be employed, in which case it reacts with the fatty acid or the like to form a'soap. Theiquantity of the aromatic sulphonic acid compound as defined, may range from about 0.1% to 5%. Perfumes and antisept}c agents may be used in a small percentage as required. The water content preferably ranges between 50 and The resulting product is a cream of whatever consistency may be desired; a cream which is stable,

which, when put on the face, spreads until a very thin layer is obtained, which readily softens the beard, and which washes ofl very easily with water by dissolving or dispersing in the water solution; a cream which will not thin out on the face and fall 01! the razor during shaving.

For the better understanding of those skilled in the. art, I give hereinbelow some representative examples of brushless shaving creams made in accordance with the present invention:

(1) Stearic acid-.. Glycerin 5 Soap y 13 Caustic potashn 13 Phenol v g 0.6 Water. I 364 Sodium salt of tetralin 3 Parts (2) Stearic acid 100 Glycerin 5 Soap 13 Caustic potash; 13 Phenol 0.6 Water 362 Sodium silicate 5 Alpha-naphthalene sodium sulphonate 5 Parts (3) Stearic' acid -1 65' Coconut oil fatty acids 15 Petrolatum 15 Paraflln 10 Iso-propyl naphthalene sodium sulphonate 5 Water 327.5 Wilkinite 20 10% caustic soda 32.5

In compounding the ingredients, the water is heated and the soap, if used, and the caustic potash or caustic soda are dissolved therein. Then the stearic acid is melted and run into the water in a thin stream while agitating the water, and agitation is continued after all of the stearic acid has been run in until a heavy emulsion has been formed. The aromatic sulphonic derivative is then added as a result of which the whole composition thins out until at the temperature at which the addition is made (60 degrees C. to 65 degrees C.) it may, in some cases, be almost as thin as water. The emulsion is then allowed to cool, continuing to stir it while cooling if necessary, until it reaches a temperature -of about 40 degrees C. The perfume and antiseptic are then added. The cream is then completed and while still at approximately 40 degrees C. is placed in containers such as collapsible tubes or jars. Upon standing for a time, the emulsion again thickens to form a fine, homogeneous, easily spreadable cream.

It will be appreciated that the examples set forth above are to be construed in an illustrative manner and not by way of limitation. Formulae of varying composition may be employed together with my improving agents, as will be readily understood by those skilled in the art. The invention is, therefore, not to be limited except as defined in the appended claims.

What I claim as new and desire to protect by Letters Patent of the United States is:

1. A brushless shaving cream comprising a plastic emulsion of oleaginous and aqueous materials and containing a minor proportion of an aromatic sulphonate.

constituting at least 50% of the weight of the 2. A brushless shaving cream comprising a plastic emulsion of oleaginous and aqueous materials and containing a minor proportion of a sulphonate of an aromatic polynuclear hydrocarbon.

3. A brushless shaving cream comprising a plastic emulsion of oleaginous and aqueous materials and containing a minor proportion of a sulphonate of an alkylated or aralkylated polynuclear hydrocarbon.

4. A brushless shaving creamcomprising a plastic emulsion of oleaginous and aqueous. materials and containing a minor proportion of an alkylated or aralkylated derivative of a naphthalene sulphonate.

5. A brushless shaving cream comprising a plastic emulsion of oleaginous and aqueous materials and containing a minor proportion of a salt of iso-propyl naphthalene sulphonic acid.

6. A brushless shaving cream comprising a plastic emulsion of oleaginous and aqueous materials and containing a minor proportion of a sulphonic acid salt of a substituted polynuclear aromatic hydrocarbon.

7. The product of claim 1 wherein the oleaginous material constitutes, at least in part, a normally solid higher fatty acid.

8. A brushless shaving cream comprising a plastic emulsion of oleaginous and aqueous materials and containing a minor proportion of an aromatic sulphonate, the oleaginous material comprising, at least in part, a normally solid higher fatty acid, and the aqueous materials constituting at least 50% of the weight of the entire cream.

9. A brushless shaving cream comprising a plastic emulsion of oleaginous and aqueous materials and containing a minor proportion of a sulphonate of an aromatic polynuclear hydrocarbon, the oleaginous material comprising, at least in part, a normally solid higher fatty acid, and the aqueous materials constituting at least 50% of the weight of the entire cream.

10. A brushless shaving cream comprising a plastic emulsion of oleaginous and aqueous materials and containing a. minor proportion of a sulphonate of an alkylated or aralkylated polyaromatic sulphonate, the oleaginous material comprising, at least in part, a normally solid higher fatty acid, and the aqueous materials entire cream.

11. The product of claim 1 wherein the ingredients are present in substantially the following proportions;

I Per cent oleaginous material 5 to 30 Aqueous material 50 to 80 Sulphonate to 5 12. The product of claim 2 wherein the oleaginous material constitutes, at least in part, stearic acid, and wherein the ingredients are present in substantially the following proportions:

Per cent oleaginous material 5 to 30 Aqueous material 50 to 80 Sulphonate /2 to 5 v Per cent oleaginous material 5 to 30 Aqueous material 50 to 80 Sulphonate to 5' 14. The product of claim 3 including a soap, and wherein the oleaginous material constitutes. at least in part, stearic acid, and wherein the ingredients are present in substantially the following proportions:

Per cent oleaginous material 5 to 30 Aqueous material 50 to 80 Sulphonate V to 5 Soap 2 to 10 15. The product of claim 5 wherein the oleaginous material constitutes, at least in part, a normally solid higher fatty acid, and wherein the ingredients are present in substantially the following proportions:

Per cent Oleaginous material 5 to 30 Aqueous material 50 to 80 Salt of iso-propyl nahthalene sulphonic acid chemical compound to 5