JP2001031540A - Shaving foam composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a shaving foam composition which can form good stable foam, can give good slippage to razors, does not leave a tingling pain to the surface of the skin after shaving, and further can give a refreshing touch to the skin after shaving. SOLUTION: This shaving foam composition comprises an undiluted solution comprising a soap component and a powdery component, and a propellant. The powdery component comprises at least one of the powder of an inorganic compound and the powder of an organic compound, and has an average particle diameter of 0.5 to 50 μm. The undiluted solution and the propellant are contained in amounts of 80 to 99 wt.% and 20 to 1 wt.%, respectively. The content of the powder is preferably 0.5 to 5.0 wt.% based on the total amount of the composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a shaving foam composition, and more particularly, to a shaving foam composition used for shaving with a so-called safety razor.

[0002]

2. Description of the Related Art For example, when shaving with a safety razor, a shaving foam or the like containing a soap component is usually applied to the skin surface. The basic benefits expected of this shaving foam are to improve the razor's slipperiness, to swell and soften the whiskers, and to make the skin surface after shaving smooth and moist. . Each of the above-mentioned effects has been enhanced by including various additives such as a lubricant and a humectant as components of the composition of the shaving foam.

[0003] However, the above additives affect the properties of the foam formed by the soap component. According to the shaving foam of which type is inappropriate and the content thereof is inappropriate, the foam to be formed cannot be used. It becomes unstable and defoams in a short time, and as a result, a good state of razor sliding on the skin surface is not maintained for a long time,
A slight irritating feeling (irritating feeling) may be left on the skin surface after shaving, for example, due to a small wound on the skin hair details caused by a razor. Furthermore, since the additive is added, an unpleasant feeling of residual remains at the place where the shaving foam is applied, so that when the shaving foam is washed off after shaving, a refreshing after-feel is obtained on the skin surface. Can not.

[0004] On the other hand, a pre-shave agent for electric razors is also known, which is used when shaving with an electric razor, and is used as a shaving foam for shaving with a so-called safety razor. It does not have the basic utility described above.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to form a good and stable foam and prevent razors from slipping. An object of the present invention is to provide a shaving foam composition which does not leave a burning sensation on the skin surface after shaving and which can provide a refreshing feeling after use after shaving.

[0006]

The shaving foam composition of the present invention comprises a stock solution containing a soap component and a powder, and a propellant, wherein the powder comprises an inorganic powder comprising an inorganic compound and an organic powder. At least one of organic powders comprising a compound having an average particle size of 0.5 to 5
0 μm.

[0007] The shaving foam composition of the present invention comprises:
The content ratio of the stock solution is 80 to 99% by weight and the content ratio of the propellant is 1 to 20% by weight, and the content ratio of the powder is 0.5 to 5.0% by weight based on the whole composition. Features.

In the shaving foam composition of the present invention, the inorganic powder is talc, kaolin, titanium oxide,
At least one powder selected from the group consisting of aluminum oxide, calcium carbonate, calcium phosphate and calcium silicate; and the organic powder is at least one powder selected from the group consisting of polyamide, polyethylene, polypropylene, polyurethane and polystyrene. It is preferably a powder.

Further, in the shaving foam composition of the present invention, the soap component is preferably composed of a higher fatty acid and an alkali agent, and the neutralization ratio of the higher fatty acid is preferably 30 to 80%.

[0010]

According to the shaving foam composition of the present invention, the powder having a specific average particle size is contained in the stock solution together with the stock solution containing the soap component and the propellant, so that the action of the soap component is sufficient. And a good and stable foam is formed. Then, the foam improves the wettability of the skin surface, thereby improving the slidability of the razor on the skin surface.Also, since the whisker is swollen and becomes a soft state, the razor is applied to the skin hair details. Small scratches are sufficiently prevented. Furthermore, by the action of the above-mentioned powder, the skin surface and the beard can be obtained in a moist state suitable for shaving without adding a wetting agent or the like, so that an unpleasant feeling of residual does not occur. Further, when the content ratio of the powder is in the specific range, the dispersion state of the powder in the composition becomes stable, and the valve or the like of the pressure-resistant container does not become clogged.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. The shaving foam composition of the present invention comprises a stock solution containing a soap component and a powder having a specific particle size range, and a propellant, and is filled in a pressure-resistant container having a spray valve to form an aerosol product. It is said.

The undiluted solution contains water, a soap component and a powder as essential components, and other auxiliary components can be added. The content ratio of this stock solution is usually 80 to 99% by weight based on the whole composition. <Water> It is generally preferable to use purified water or ion-exchanged water as the water forming the stock solution. The water content is from 30 to 94% by weight, especially 75% by weight of the total composition.
Preferably it is ~ 85% by weight. If the ratio is out of this range, it is not preferable because the foaming property of the discharged material is reduced.

<Soap Component> Although the soap component is not particularly limited, it is preferable that the soap component is constituted by blending both a higher fatty acid and an alkali agent. In addition, by the presence of a specific amount of higher fatty acids in the free state in the shaving foam composition, the viscosity in the composition is adjusted, and the miscibility with the propellant is increased, so that The state of foam formation is good. The neutralization rate of this higher fatty acid is 30-80%, especially 40
Preferably, it is 、 60%, in which case a good and stable foam is formed.

Specific examples of the higher fatty acid include stearic acid, lauric acid, coconut oil fatty acid, and oleic acid, and these can be used alone or in combination of two or more. The content of the higher fatty acid is preferably 2 to 15% by weight based on the whole composition.

As the alkaline agent, potassium hydroxide, sodium hydroxide and the like can be used, but a compound having an amino group is preferably used. Specific examples thereof include triethanolamine, aminomethylpropanol, diisopropanol and the like. Examples include amine, diethanolamine, and triisopropanolamine. These can be used alone or in combination of two or more, and triethanolamine is particularly preferable.
According to the soap component generated when an alkali agent comprising a compound having such an amino group is used, a fine-grained and stable foam state foam is formed as compared with the case where another alkali agent is used. In addition, there is an advantage that there is little irritation to the skin. The content ratio of the alkali agent is preferably 0.5 to 10% by weight based on the whole composition.

<Powder> A powder is a solid fine powder that is practically insoluble in a stock solution and has an average particle diameter in the range described below, as long as it is an inorganic powder composed of an inorganic compound and an organic powder composed of an organic compound. Any of powder,
Further, a mixed powder of an inorganic powder and an organic powder may be used.

Examples of the inorganic powder include powders such as talc, kaolin, titanium oxide, aluminum oxide, calcium carbonate, calcium phosphate and calcium silicate.
Examples of the organic powder include powders of polyamide, polyethylene, polypropylene, polyurethane, polystyrene and the like, and it is particularly preferable to use nylon powder which is a powder of polyamide. Each of these inorganic powders and organic powders can be used alone or in combination of two or more.

The inorganic powder and the organic powder preferably have a spherical particle shape and a number average particle size of 0.1.
It is necessary to be 5 to 50 μm, preferably 1 to
10 μm. When a powder having an average particle size that is too small is used, the lubricating property of the foam to be formed is reduced, and the sliding property of the razor on the skin surface is reduced. On the other hand, when a powder having an excessively large average particle size is used, spreadability and lubricity of the foam to be formed are reduced, and the skin surface to which the foam is applied becomes rough.

The content ratio of the powder is 0.5 to 5.0% by weight, preferably 1.0 to 3.0% by weight based on the whole composition.
0% by weight. When the content ratio of the powder is too small, the degree of the above effect is small, and the object of the present invention may not be sufficiently achieved. On the other hand, when the content ratio of the powder is excessive, clogging is likely to occur in the nozzle of the pressure-resistant container and the like, and the dispersion state of the powder in the composition becomes unstable, making it difficult to obtain a sufficient dispersion state during use. It may be.

The shaving foam composition of the present invention can contain various additives as required. Specific examples include a pH adjuster, a lubricant, a plasticizer, a colorant, a fragrance, and others.

In the shaving foam composition of the present invention, as the propellant, a known propellant having such an effect can be used as long as it is harmless to the human body. Liquefied petroleum gas, dimethyl ether, compressed gas, etc. can be used, and a plurality of them can be used in combination. The content ratio of this propellant is usually 1 to 20% by weight based on the whole composition.

The shaving foam composition as described above is filled into a pressure-resistant container to form an aerosol product.

[0023]

Hereinafter, embodiments of the present invention will be described.
The present invention is not limited by these. <Examples 1 to 10 and Comparative Examples 1 to 3> An aerosol product was prepared by mixing each component and powder as a stock solution according to the formulation shown in Table 1, and filling the mixture together with a propellant in a pressure-resistant container. . Further, Examples 1 to 9 and Comparative Example 1
The neutralization rate of higher fatty acids in the soap components of ~ 3 is 40 ~
It is 60%, and the neutralization rate of higher fatty acids in Example 10 is 20% or less. Comparative Example 1 is an example where the average particle size of the powder constituting the powder is too small, and Comparative Example 2 is an example where the average particle size of the powder is too large. Comparative Example 3 is an example where no powder is contained.

With respect to each of the compositions of Examples 1 to 10 and Comparative Examples 1 to 3, when the razor was shaved with a safety razor using the compositions,
In addition, a test was conducted in which ten panelists judged whether there was a burning sensation after shaving and a refreshing feeling after shaving. The number of people who judged that the razor slipped well,
Table 1 shows the evaluation results of the number of persons who determined that the burning sensation did not remain and the number of persons who determined that a refreshing feeling after use was obtained.

[0025]

[Table 1]

From the results in Table 1, it can be seen that the aerosol products of Examples 1 to 7 form foams that are sufficiently foamed and maintain a good foam state, and that the razors are slippery.
No irritating feeling remains after shaving, and a refreshing after-use feeling is obtained after shaving. In addition, during the period of use, no clogging occurred in the nozzle of the pressure-resistant container and the like. In the aerosol product of Example 8,
Since the content ratio of the powder is 0.1% by weight, the razor slides more easily than in the above-described example. In the aerosol product of Example 9, the content ratio of the powder is 10% by weight. Therefore, the nozzle of the pressure-resistant container is easily clogged. In the aerosol product of Example 10, since the neutralization ratio of the higher fatty acid was 20% or less, the discharged product was not in a good foam state. On the other hand, in the aerosol product of Comparative Example 1, the razor did not slide smoothly because the average particle size of the powder was too small, and did not provide a refreshing feeling after use after shaving. In the aerosol product of Comparative Example 2, the razor did not slide smoothly because the average particle diameter of the powder was too large, and did not provide a refreshing after-use feeling after shaving. Since it was not contained, the razor slipped poorly, leaving a tingling sensation after shaving, and a comfortable after-use feeling after shaving was not obtained.

[0027]

According to the shaving foam composition of the present invention, together with a stock solution containing a soap component and a propellant,
Since the stock solution contains a powder having a specific average particle size, the foam is sufficiently foamed by the action of the soap component, and a good and stable foam is formed. The foam improves the wettability of the skin surface, thereby improving the shave of the razor on the skin surface.Also, since the whisker is swollen to a soft state, the razor is small in the skin hair details. Scratching is well prevented, so that no irritations remain on the skin surface after shaving. Furthermore, by the action and effect of the above-mentioned powder, the skin surface and the beard can be obtained in a moist state suitable for shaving without adding a wetting agent or the like, so that an unpleasant feeling of residual does not occur, and therefore, after shaving, An invigorating feeling after use can be obtained. Further, particularly when the content ratio of the powder is in the specific range, the dispersion state of the powder in the composition becomes stable, and the valve of the pressure vessel does not clog.

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Claims (5)

[Claims] 1. An undiluted solution containing a soap component and a powder, and a propellant, wherein the powder comprises at least one of an inorganic powder made of an inorganic compound and an organic powder made of an organic compound, A shaving foam composition having a particle size of 0.5 to 50 μm. 2. The content ratio of the stock solution is 80 to 99% by weight and the content ratio of the propellant is 1 to 20% by weight, and the content ratio of the powder is 0.5 to 5.0 with respect to the whole composition.
The shaving foam composition according to claim 1, wherein the composition is in a weight%. 3. The method according to claim 1, wherein the inorganic powder is at least one powder selected from the group consisting of talc, kaolin, titanium oxide, aluminum oxide, calcium carbonate, calcium phosphate and calcium silicate. Item 3. A shaving foam composition according to Item 2. 4. The shaving according to claim 1, wherein the organic powder is at least one powder selected from the group consisting of polyamide, polyethylene, polypropylene, polyurethane and polystyrene. Foam composition. 5. The shaving according to claim 1, wherein the soap component comprises a higher fatty acid and an alkali agent, and the higher fatty acid has a neutralization ratio of 30 to 80%. Foam composition.