JPH047389A - Aerosol composition - Google Patents

Abstract

PURPOSE:To make it possible to get rid of liq. sagging on the skin and greasiness and to obtain a clean feeling when used by compounding specified powder and surface active agent in an aerosol compsn. CONSTITUTION:A compsn. for an aerosol consisting of a water-contg. base liquid for the aerosol and an aerosol propellant which exhibits and adhesive characteristic in an ice-bound shape or a fallen-snow shape on a coating face when this compsn. is ejected and wherein one or more powders selected from the group consisting of starch, hydrophilic anhydrous silicate and crystalline cellulose and a surface active agent are compounded. As the surface active agent, no limitation exists and any surface active agent that can make a uniform emulsified state or dispersed state when the water-contg. base liquid and the propellant are shaked and mixed can be used. It is preferable that 0.1-30 pts.wt. above described powder and 0.1-5 pts.wt. surface active agent are compounded with 100 pts.wt. water-contg. base liquid.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an aerosol composition, and more specifically, it has a physical astringent effect that lowers skin temperature due to the heat of vaporization of a propellant, and does not cause liquid blurring. The present invention relates to an aerosol composition that has a firm feeling when used.

[Conventional technology]

Conventionally, methods for tightening swollen skin and giving a refreshing feeling include applying lotions containing astringents such as zinc rosephenol sulfonate, aluminum chloride, and citric acid, and applying water when the propellant vaporizes. Aerosol products that use heat of vaporization to cool the scalp and stimulate it (Japanese Patent Laid-Open No. 61
There is a method using the method (see Japanese Patent No. 68406).

[Problem to be solved by the invention]

However, when using a conventional lotion containing an astringent, it not only does not have a sufficient tightening effect on exfoliated skin, but also has problems such as dripping during use. Furthermore, when using an aerosol product, although the effect of tightening the swollen skin is satisfactory to a certain extent, there is still the problem that the liquid bleeds because it contains a large amount of low-boiling point solvent. In order to solve these problems, an aerosol composition has been developed that adheres to the skin in the form of ice or snow during application and can prevent liquid blurring. However, it has been desired to further improve such aerosol compositions in terms of non-sticky and light feel during use.

[Means for Solving the Problems] Under these circumstances, the inventors of the present invention have conducted intensive research and have found that the present invention consists of a water-containing stock solution and a propellant, and has the property of adhering to the skin in the form of ice or snow when sprayed. When an aerosol composition containing a specific powder and a surfactant is used, it tightens the flaky skin, does not cause dripping on the skin during use, and has a light, non-sticky feel. The present invention was completed by discovering that a comfortable feeling in use can be obtained.

That is, according to the present invention, in an aerosol composition consisting of a water-containing stock solution for aerosol and an aerosol propellant, when the composition is sprayed, no ice-like or snow-like (hereinafter referred to as such a state) is formed on the coated surface. An aerosol that has the property of adhering to a sherbet (referred to as a sherbet state) and is characterized by containing one or more powders selected from the group consisting of starch, hydrophilic silicic anhydride, and crystalline cellulose, and a surfactant. A composition for use is provided.

For example, the powder used in the present invention has a particle size of 150
Examples include starch with a particle diameter of less than μ, hydrophilic silicic anhydride, and crystalline cellulose, and these can be used alone or in combination of two or more types.

The particle size of the powder is generally set at 1 in order to obtain a uniform sherbet that does not feel rough when used and has a light texture.
It is preferably 50μ or less, particularly 100μ or less.

If necessary, in addition to these powders, powders such as talc and nylon powder may be used in combination.

The blending ratio of the water-containing stock solution and the powder is such that when the water-containing stock solution and the propellant are mixed by shaking during use, the powder has an auxiliary surfactant ability to maintain a uniform emulsion or dispersion state. In addition, in order to prevent the powder from remaining white on the skin when it dries during use, 0.1 to 50 parts of powder, especially 0.1 to 50 parts of powder per 100 parts of water-containing stock solution (parts by weight, the same shall apply hereinafter).
．． 1 to 30 parts is preferred.

In the present invention, among the specific powders (starch, hydrophilic silicic anhydride, or crystalline cellulose), if starch, which is hardly soluble in the aerosol composition, is blended, it will absorb dirt such as excess lipids and sweat on the skin, and It gives a light feeling to the skin and is particularly preferred.

In the water-containing stock solution used in the present invention, components used in aerosol compositions such as cosmetics can be appropriately selected and blended with the water-containing stock solution. In order to obtain a good sherbet state, it is preferable to contain water in an amount of 50% by weight or more. Additionally, alcohol may be added to provide a refreshing feeling and to dissolve water-insoluble components. The amount of alcohol blended is preferably 201% by weight or less in the water-containing stock solution.Furthermore, in order to obtain a uniform emulsion or dispersion state when the water-containing stock solution and propellant are mixed by shaking during use, surface active Mix the agent. In order to provide a uniform emulsified state or dispersion state and not feel sticky during use, the blending ratio of the water-containing stock solution and the surfactant is 100% of the water-containing stock solution.
0.01 to 10 parts of surfactant, especially 0.1 to 10 parts per part of surfactant.
5 parts is preferred.

Examples of the surfactant used in the present invention include polyoxyethylene polyoxypropylene alkyl ether,
Examples include polyoxyethylene alkyl phenyl ether, polyoxyethylene castor oil derivatives, and these may be used alone or in combination of two or more. The surfactant is not limited to these as long as it is capable of creating a uniform emulsion or dispersion state when the water-containing stock solution and the propellant are mixed by shaking.

The propellants used in the present invention include those with a boiling point of 5°C or less, such as liquefied petroleum gas (hereinafter referred to as LPG) whose main components are propane, isobutane and/or n-butane, and dimethyl ether (hereinafter referred to as DME). , Freon, etc., and these may be used alone or in combination of two or more. Examples of preferred propellants include DM
E20-55% baking soda and 25°C (7) pressure 3.0k
g/cJ or less (7) It is a mixed propellant with 80 to 45% by weight of LPG.

In the present invention, in order to obtain a good sherbet state and to obtain a uniform emulsion or dispersion state during shaking, the blending ratio of the water-containing stock solution and the propellant is 10:
It is preferable that the weight ratio is 90 to 30 near 0.

In addition to the above-mentioned essential ingredients, the aerosol composition of the present invention contains substances commonly used in aerosol compositions, and humectants such as glycerin, polyethylene glycol, propylene glycol, dipropylene glycol, and 1,3-butylene glycol. Hydrolic alcohols, pyrrolidone carboxylates, lactates, various amino acids, etc.; Softeners such as ester oil, higher alcohols; Keratin softeners such as potassium hydroxide, potassium carbonate; Cationic astringents such as paraphenolsulfone Metal salts such as zinc acid, zinc sulfate, zinc chloride, aluminum sulfate, and aluminum hydrochloride; organic acids such as tannic acid, citric acid, and lactic acid as anionic astringents; and lower alcohols, fragrances, preservatives, and antioxidants. , dyes, pigments, fungicides,
Ultraviolet absorbers, beauty ingredients, etc. may be added within the range that does not impede the effects of the present invention.

By emulsifying or dispersing part or all of the above-mentioned mixed propellant in a stock solution, it is possible to produce a composition that can be applied in a sherbet state without causing liquid dripping on the application surface when sprayed. . The sherbet state referred to herein means, for example, when the aerosol composition of the present invention is sprayed onto the palm of the hand, the appearance is that water is about to turn into ice on the applied surface, or snow is on the palm of the hand. It refers to a state in which one feels a local cold sensation, similar to when water, ice, snow, or a mixture of these at O'C level is placed on the palm of the hand.

The action of the propellant will be specifically explained below.

A case will be described in which the aerosol composition of the present invention is prepared based on isobutane having a boiling point of -11.7°C. When a composition is prepared by emulsifying isobutane into a water-containing stock solution of an aerosol composition using a surfactant and is injected from an injection device, the water-containing stock solution can form an appropriately cooled sherbet-like coating surface. can. In this case, the ratio of water-containing stock solution to isobutane is 10:90-20:
It is about 80% by weight. The proportion of water-containing stock solution is 10% by weight
If it is lower, it becomes difficult to emulsify and disperse isobutane. If the water-containing stock solution is higher than 20% by weight, the latent heat of vaporization of isobutane may not be able to completely freeze the water-containing stock solution.

Therefore, if you want to increase the amount of water-containing stock solution, you can replace some of the isobutane with propane (boiling point -4
2.1°C), DME (boiling point -24.9°C), etc., it is possible to freeze the water-containing stock solution on the coating surface. However, if a large amount of propane, which has a large latent heat of vaporization, is used as a propellant with a small amount of water-containing stock solution, the propane evaporates quickly and the composition freezes as soon as it leaves the button nozzle of the injection device, which can cause button clogging. This can lead to supercooling conditions.

On the other hand, if part of itbutan is replaced with DME, D
Since ME has a lower boiling point and a higher latent heat of vaporization than isobutane, it is considered thermodynamically easier to freeze.

However, in the case of DME, it has high solubility in the water-containing stock solution, which slows down the rate of vaporization and gas release, and because DME remains in the water-containing stock solution, the composition may freeze immediately after leaving the button nozzle of the injection device. However, the contents may turn into a succulent form of ice after adhering to the coated surface. By combining propellants with different properties (boiling point, latent heat of vaporization) in this way, it is possible to create a fresh sherbet state that gives a strong cooling sensation from a relatively cold sherbet state.

Specific examples of suitable propellant combinations are shown below.

Taking advantage of the property that DME dissolves in water,
An example is a combination with LPG where the pressure of C is 3.0 kg/cij or less. Among the above LPGs, normal butane is particularly suitable. When DME is used in a mixed gas of DME and n-butane in a range of 20 to 55% by weight,
A suitable sherbet state is formed on the coated surface. Since normal butane has a relatively high boiling point of -0.5° C., gas separation is slow, and combined with the water-soluble nature of DME, it gives a strong cooling sensation and also takes a considerable amount of time. When DME is less than 20% by weight, it is difficult to obtain the above-mentioned characteristics due to DME dissolving in the water-containing stock solution, and LP
There is no major difference from preparing a composition using G alone, and 551i
If the amount exceeds %, when the composition is sprayed from a button nozzle for dissolving the water-containing stock solution, it becomes a fine mist, making it difficult to form a sherbet state on the adhering surface. D
When using a mixed propellant of ME and n-butane, the ratio of the water-containing stock solution to the propellant is 10:90 as described above.
A weight ratio of ~30:70 is preferred. When the water-containing stock solution is less than 10% by weight, it becomes difficult to emulsify and disperse the mixed propellant. If the water-containing stock solution is higher than 30% by weight, the latent heat of vaporization of the mixed propellant may not be able to completely freeze the water-containing stock solution.

〔Example〕

EXAMPLES The present invention will be explained in more detail with reference to Examples below.

Examples 1 to 3 Aerosol compositions having the formulations shown in Table 1 were manufactured by the method described below, and the resulting aerosol products were evaluated by an expert panel for their residual appearance on the skin (whiteness), lightness, and sherbet quality. It was evaluated by 30 people and the gelation ability of the contents was also examined.

Manufacturing method: Mix components (1), (3) and (4) uniformly to make mixture A.
), components (2), (5), (6) to 0ω, and the above mixture A are placed in an aerosol can to prepare an aerosol stock solution, and an injector is attached using a conventional method, and component OD is added to produce an aerosol product. shall be.

Judgment: Average score: 2.5 or more, 2.0 or more, less than 2.5, 1.5 or more, less than 2.0, less than 1.5 Evaluation criteria: Residue (whiteness) Light sherbet state Gelability Example 4 Prescription : (1) Calamine 3: Fair, good, neutral, fair, bad, 0, 1 (g) (2) Kaolin 0.1 (3)
Glycerin 0.6 (4) Camphor 0.1 (5) Flavoring
0.1 (6) Ethyl alcohol 1.7 (7) Polyoxyethylene (60E, 0.) 0.5 Hydrogenated castor oil (8) Purified water 11.3 (9)
Corn starch 0.5ST-C (8
00) Propellant (DME/isobutane, 30/70gtx) 85 Production method: Mix component (6) with components (1) or 5) and (7) uniformly and place in an aerosol can. , further add components (8) and (9) and mix uniformly to prepare an aerosol stock solution, attach an injection device using a conventional method, and add component 00.
is added to make an aerosol product.

The aerosol product of the present invention obtained as described above forms a good sherbet on the skin, does not cause liquid blurring, and has an astringent effect and a light feel when used.

Example 5 Prescription: (1) Menthol 0.01 (g
) (2) Sorbit 0.4 (3
) Zinc paraphenolsulfonate 0.02 (4) Lactic acid 0.04 (5) Fragrance 0.03 (6) Ethyl alcohol 2.0 (7) Polyoxyethylene (20B, 0.) 0.2 Polyoxypropylene ( 8P, 0.) Cetyl ether (8) Purified water 16.85 (9
) Hydrophilic silicic anhydride (KrJ Dig200) 0.4
500) Propellant (DME/Normal Butane = 501
50wtχ) 80 manufacturing method: Add ingredients (1) to (5) and (7) to ingredient (6), mix uniformly, put into an aerosol can, and then add ingredient (8).
) and (9) are added and mixed uniformly to prepare an aerosol stock solution.A spray device is attached using a conventional method, and component 0ω is added to prepare an aerosol product.

The aerosol product of the present invention obtained as described above is
It formed a good sherbet on the skin, did not cause liquid bleed, and had an astringent and light texture.

〔Effect of the invention〕

When the aerosol composition of the present invention is sprayed onto the skin, it can be deposited in a sherbet state (like ice or snow), so it continues to provide a cooling sensation to specific areas for a long time without causing dripping. be able to. Therefore, it is possible to exert a physical astringent effect such as a reduction in skin temperature due to the heat of evaporation of the liquefied gas. In addition, it is possible to give the coated surface a frost-like or snowfield-like shape and color, and it also produces unique visual effects, such as cosmetic or playful effects. Furthermore, by using the specific powder according to the present invention, the aerosol composition of the present invention has an improved lightness compared to conventional compositions.

Claims (1)

[Claims] 1. An aerosol composition consisting of a water-containing stock solution for aerosol and an aerosol propellant, which has the property of adhering in the form of ice or snow on the applied surface when the composition is sprayed;
An aerosol composition comprising one or more powders selected from the group consisting of starch, hydrophilic silicic anhydride, and crystalline cellulose, and a surfactant.