DE1100882B - Foot care products - Google Patents

Description

GERMAN

Due to the peculiarity of their clothing, the human feet are largely closed off from the entry of air, so that their skin because of the perspiration and the hindered free evaporation due to the exclusion of air practically located in a humid chamber. Due to the continuous action of skin bacteria Decomposed sweat easily forms skin macerations on normally healthy skin, which then occur can favor interdigital mycosis. The decomposition of foot sweat also causes this Creation of a particularly disgusting smell.

Attempts have been made to prevent excessive perspiration or breakdown of the To prevent sweat and thereby switch off the unpleasant smell of sweat. To prevent a * 5 excessive perspiration (hyperhydiosis) are skin-tanning agents that contain formaldehyde, Contain alum, hexamethylenetetramine or chromic acid compounds, astringent substances, such as aluminum salts, or also absorbent agents, such as powders containing fat and fatty substances, are known. Around Substances are used to prevent the sweat from decomposing and thereby preventing the unpleasant smell of sweat used, which act on the bacterial skin flora and a disinfecting and deodorising effect bring about, such as halogenated phenols, chlorinated salicylic anilides, etc., e.g. B. 2-Benzyl-4-chlorophenol or 2,2 '- dihydroxy - 3,5,6,3', 5 ', 6' - hexachlorodiphenylmethane.

The release of water or sweat by the skin has, among other things, temperature-regulating effects. A prevention the leakage of water through impermeable layers, e.g. B. of ointments with a high fat content gives up Heat build-up in the skin, which can lead to the disruption of normal perspiration.

The purpose of the invention is to create a new foot care product that is effective against the feet Exposure to sweat or sweat decomposition products protects and at the same time the unpleasant Eliminates odor.

It has been found that the sweat output varies depending on the amount used to make the foot care product Different substances with the same layer thickness. In particular, it has been found that a film-like spread consists of certain silicone oil preparations on the skin do not hinder the secretion of sweat, but that the Sweat comes out of the skin through the silicone oil film and the skin continues to "breathe".

The foot care product according to. Invention contains about 0.2 to 20 percent by weight, preferably about 0.5 to 5.0 percent by weight of liquid, alcohol-soluble Alkylarylpolysiloxanes, especially alkylphenylsiloxanes, low viscosity and a small amount of one of the Foot care products

Applicant:

P. Beiersdorf & Co. Aktiengesellschaft,
Hamburg 20, Unnastr. 48

Dipl.-Chem. Dr. Reinhold Juhrich, Hamburg aisles, has been named as the inventor

Anti-perspirant decomposition agent. Particularly suitable are polysiloxanes of the type specified with a viscosity of 10 to 30 cSt at 2O ⁰ C, in particular Methylphenylsüoxane or Äthylphenylsiloxane.

When using the foot care product according to the invention, the perspiration from the pores is through a thin film of the polysiloxanes does not hinder, and moreover it is achieved that the excreted Sweat cannot affect the main areas covered with the silicone film. Moisture can be released penetrate outwards, but not from the outside in. It is therefore according to when using the foot care product the invention eliminated the effect of the "humid chamber" on the feet.

At the same time destroys what is contained in the foot care product, which prevents the decomposition of sweat Agent made from antibacterial substances such as 2,2'-dihydroxy - 3,5,6,3 ', 5', 6 '- hexachlorodiphenylmethane, bis- (5-chloro-2-oxyphenyl) methane or tetramethylthiuram disulfide, which can break down sweat causing skin bacteria, so that the unpleasant odor caused by decomposition no longer occurs can. The odor-removing effect of the foot care product according to the invention is enhanced in that the silicone oils do not in any way promote the growth of fungi or bacteria.

The use of silicones in personal care products is known. Furthermore, the use of silicones is at the manufacture of cosmetic preparations, such as hair dyes, hair shine, skin protection creams, dental

109 528/655

Creams, mouthwashes, powders, sälven and lipstick bases, known. Due to the known use of silicones in the cosmetic field in general, however, it could not be foreseen that by the foot care product according to the invention, which has a comparatively low content of certain liquid, alcohol-soluble silicones, a special one Effect is achieved, which on the one hand ensures the "breathing activity" of the skin and on the other hand the harmful effects of sweat and its decomposition products on the skin of the feet.

The foot care product according to the invention can be lower in addition to the liquid, alcohol-soluble polysiloxanes Viscosity and the antibacterial substances in the predominant "proportion easily evaporable substances that do not Have an irritant effect on the skin of the feet, such as water, alcohol or the like. Contain. Substantial proportions of substances that have a greater covering effect, such as fats, mineral oils or fatty oils, are for the foot care product according to the invention is unsuitable because it reduces or eliminates the breathing effect will.

In the measurement of water vapor permeability thin film-like spreads on the living skin has been found that the covering effect of Vaseline about 58 ° / _0, and the amounts of wool fat alcohols about 40 ° / _0, while when using the provided at the foot care agents according to the invention, liquid, alcohol-soluble Polysiloxanes of low viscosity when using concentrations of 0.2 to 20 percent by weight the covering effect is practically equal to NuU.

The foot care product according to the invention can be produced in various forms, e.g. B. as a solution for spraying, as a cream or as a liquid emulsion.

In contrast to films made from fat-free preparations that do not contain silicone oils that are applied to the skin and in most cases there is sufficient elasticity and the necessary cohesion lacks, so that they tear easily, is in the foot care product according to the invention after application creates a cohesive, thin, almost monomolecular film on the skin surface, which in no way changes the skin's sensitivity to touch and against water, aqueous secretions, Soap, inorganic acids, salts, etc. is largely resistant. At the same time, due to the low Layer thickness of the silicone film obtained, particularly favorable conditions for "skin breathing", i. H. the Permeation of sweat or moisture to the outside created.

The invention is explained in more detail below with the aid of a few examples. ■ -

example 1

It became a solution for spraying from the following manufactured:

0.2 bis (5-chloro-2-oxyphenyl) methane -

0.2 2,2'-dihydroxy-3,5,6,3 ', 5', 6'-hexachlorodi-

phenyl methane

0.5 methylphenylpolysiloxane oil (25cSt / 20 ° C)
0.5 liquid fatty alcohols or oleyl oleate or

Isopropyl myristate
98.6 isopropanol or ethanol

100.0

IO excellent. Consumers who suffered from severe annoyance from the odor of sweat on their feet were relieved of it after just one application.

- - Example 2

A cream was made from the following:

2.0 fatty alcohol polyglycol ether
5.0 glycerol monostearate
10.0 ceryl alcohol

3.0 methylphenylpolysiloxane oil (30 cSt / 20 ° C)
1.0 isopropyl myristate or palmitate

2.5 fatty alcohol sulfate -

23.4 glycerin
53.0 water

0.1 tetramethylthiuram disulfide or bis (5-chloro-2-oxyphenyl) methane or
2,2'-dihydroxy-3,5,6,3 ', 5', 6'-hexachlorodiphenylmethane

100.0

The cream was in a thin film-like spread especially applied between the toes. The odor reducing effect was within perceive in the shortest possible time.

Example 3

A liquid emulsion was made from the following:

2.1 triethanolamine stearate

35

40

45 0.5 cetyl alcohol

1.0 glycerin

3.0 polyethylene glycol (molecular weight 4000

up to 6000)

0.2 methyl p-oxybenzoate
0.5 wool wax alcohols
2.0 propylene glycol monomyristate
2.0 isopropyl myristate or palmitate
3.0 methylphenylpolysiloxane oil (20 cSt / 20 ° C)
0.1 tetramethylthiuram disulfide or bis-

(5-chloro-2-oxyphenyl) methane or

2,2'-dihydroxy-3,5,6,3 ', 5' ₎ 6'-hexachlorodi-

phenylmethane

0.6 bentonite or magnesium aluminum silicate
85.0 water

100.0

The emulsion was applied to the whole foot with a gentle massage, especially again between the toes. Odor-reducing effects and elimination of skin macerations occurred within a very short time.

The by the "foot care products on the surface of the The film formed by the skin of the foot retains its effect over longer periods of time, so that it can be used once or twice causes odorless feet during the week, and also prevents skin damage restores the normal function of the skin of the feet. The fihn spread formed from the foot care product is surprisingly abrasion resistant.

65

Claims (2)

Claims: The solution was sprayed onto the feet in such a way that a wafer-thin coating resulted. The effect of Avar 1. foot care products, characterized in that it is about 0.2 to 20 percent by weight, preferably 5 6 about 0.5 to 5.0 percent by weight of liquid, alcohol-free publications: Kche alkylarylpolysiloxanes and one or more of French Patent No. 1,078,892; Substances that prevent the decomposition of sweat Keithler: »The Formulation of Cosmetics and Cos- contains. metic Specialties, 1956, pp. 460 to 462 '; 2. Foot care product according to claim 1, characterized in that there are 5 "Soaps, Oils, Fats, Waxes", 1956, No. 19, p. 543 indicates that it is a liquid, alcohol-soluble to 546; Methylphenylpolysiloxane with a viscosity of »Cosmetics-Perfume-Drugs-Rundschau für Industrie, Contains 10 to 30 cSt at 2O ⁰ C. Commerce and Industry ”, 1954, No. 5 and 6. © 109 528/655 2.61