JP2544162B2 - Azole type cosmetics containing powder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides an aerosol-type cosmetic composition having excellent spreadability on skin, uniformity of stickiness, stability and safety, and unique organoleptic properties. It is something to do.

[Conventional technology and its problems]

Conventionally, aerosol type cosmetics containing powder have not been used much except for antiperspirants.

As a powder used for this antiperspirant, aluminum chlorohydrate having a good suspension and dispersibility is famous. However, there is a risk that this aluminum chlorohydrate will cause hydrolysis in a water system to generate hydrochloric acid and cause corrosion of the aerosol can.

For powders other than aluminum chlorohydrate, it is generally difficult to sufficiently suspend and disperse the powder, and the powder will settle, float or aggregate. Therefore, the injection hole, the nozzle, the valve, or the actuator is clogged, or uniform spraying is hindered. Such a tendency becomes more remarkable as the amount of powder increases.

Therefore, as a method of using a suspending agent in combination, Japanese Patent Publication No. 36-14
397, Japanese Patent Sho 40-28956, Japanese Patent Sho 42-14804, Japanese Patent Sho 41-409, Japanese Patent 59-217784, Japanese Sho 60-173078
However, all of these methods limit the types of suspending agents, and
It is hard to say that it has excellent stability and usability and has a satisfactory effect.

Further, as the powder component, particles having a particle size of 100 μm or less and 5 to 30 μm are used. For example, prednisolone and hydrocortisone and their derivatives, dexamethasone, tetrahydrozoline hydrochloride, fradiomycin sulfate, benzethonium chloride, aluminum powder, kaolin, talc, aluminum chlorohydroxide powder, titanium oxide, magnesium carbonate, magnesium silicate, fish scales. Foil, titanium mica, mica, starch, synthetic polymer substances (nylon, polyethylene, etc.), magnesium salts, calcium salts and aluminum salts of stearic acid, iron oxides (red iron oxide, etc.), bentonite, etc. Since it is used in the form of powder or flaky powder, it does not have a smooth, slippery feel, and the intended use feel cannot be obtained.

[Means for solving problems]

Therefore, in view of such a current situation, the present inventors have conducted intensive studies to overcome the above problems, and as a result, completed the present invention.

That is, the undiluted liquid component has an average particle size of 0.5 to 100 μ and a spherical powder having an apparent specific gravity of 0.7 to 1.4 in an amount of 0.5 to 50% by weight, and a hydrophilic nonionic surfactant of HLB8 or more 0.05 to 10% by weight, Further, it is composed of 3.0 to 70% by weight of other components, the stock solution is 3.6 to 96% by weight, and the propellant is 4.0 to 96.4% by weight.
It is an aerosol-type cosmetics characterized by comprising by weight.

 The present invention is described in detail below.

First, the spherical powder used in the present invention comprises a hydrophobic monomer such as vinyl acetate, methyl vinyl ether, acrylic acid, acrylic acid ester, methacrylic acid ester, styrene, α-methylstyrene, divinylbenzene, and ethylene glycol dimethacrylate. Homopolymers and / or copolymers, nylon, polyethylene,
Benzoguanamine and / or titanium oxides thereof,
Iron oxide coated, titanium oxide, hydroxyapatite, cellulose, mica, silica, calcium silicate, magnesium carbonate, silicone resin, starch (corn, rice), etc.
It is possible to use one kind or a mixture of two or more kinds.

The particle size of the spherical powder is preferably 0.5 to 100 µ, particularly preferably 1 to 50 µ. When it is 0.5 μm or less, the powder feels squeaky, the slipperiness becomes poor, and the whiteness appears, which is not preferable. On the other hand, when it is 100 μ or more, foreign body feeling, discomfort,
It is not preferable in terms of usability such as rough feeling.

Further, the apparent specific gravity is preferably 0.7 to 1.4, particularly preferably 0.8 to 1.2. If it is 0.7 or less, the powder is too light and the dispersibility and emulsifying property are poor, and if it is 1.4 or more, the sedimentation is rapid and caking occurs, and the redispersibility becomes poor. It is not preferable.

Next, as the HLB8 or more hydrophilic nonionic surfactant used in the present invention, those commonly used in the art can be used as they are. That is, in the ether type, polyoxyethylene alkyl and alkyl allyl ether, an ethylene oxide derivative of an alkylphenol formalin condensate,
Single chain length polyoxyethylene ether type, polyoxyethylene alkylthioether, etc. Ether ester type, polyoxyethylene propylene glycol monofatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glyceryl monofatty acid ester, polyoxyethylene Sorbitol fatty acid esters, polyoxyethylene derivatives of natural fats and oils and waxes such as castor oil and hydrogenated castor oil derivatives, and lanolin derivatives, etc. Sugar fatty acid ester, etc.
It is possible to use one kind or a mixture of two or more kinds.

The concentration of these activators to be used is preferably 0.05 to 10% by weight in the stock solution, and if the concentration is 0.05% or less, the dispersibility and foamability are poor, and the stability and feel cannot be exerted as a product. On the other hand, if it is 10% or more, it is not preferable in terms of safety.

Next, as other components used in the present invention, additives used in ordinary cosmetics, for example, oils and fats, waxes, antioxidants, fragrances, dyes, pigments, alcohols, polyhydric alcohols, antiseptic Agents, medicinal ingredients, ultraviolet absorbers, chelating agents, water, moisturizers, thickeners and the like.

Next, as the propellant used in the present invention, trichlorofluoromethane (hereinafter abbreviated as CFC 11), dichlorodifluoromethane (CFC 12), chlorofluoromethane (CFC 22), 1,2-dichloro-1, 1,2,2-Tetrafluoroethane (Freon 114), 1,1,2-Trichloro-1,2,2
-Trifluoroethane (Freon 113), 1-chloro-1,1
-Difluoroethane (CFC 142b), dimethyl ether (DME), liquefied petroleum gas (LPG) and the like, and these can be used alone or in combination of two or more.

<Example> Next, an example and a comparative example of the present invention will be described. In addition, in the examples, the blending amount is shown by weight.

Example 1. Body powder foam (formulation) (Manufacturing method) A is put into a melting pot, mixed and dissolved, and then B is added and mixed. After sufficiently stirring, the mixture is poured into an aerosol can and filled with mixed gas C to obtain a product.

Comparative Example 1. Body powder foam (a) (compound formulation) (Production method) The production method of Example 1 of the present invention is applied correspondingly to obtain a product.

Example 2. After shave lotion powder (formulation) (Manufacturing Method) A is put into a melting pot, mixed and dissolved, B is added and mixed and stirred, and then injected into an aerosol can, and after being mixed with a mixed gas C, sufficiently stirred and emulsified to obtain a product.

Example 3. UV protection cream (liquid) (formulation) (Production method) A is heated to 75 ° C and mixed.

B at 75 ° C. is added to this and homogenized with a homomixer. Cool with stirring, add C when it reaches 30 ℃,
It is injected into an aerosol can, filled with mixed gas D, and mixed to obtain a product.

〔The invention's effect〕

It will be described in detail that the product of the present invention is excellent in smoothness of spreading on skin, uniformity of sticking and stability.

(1) Sensory Evaluation <Experimental Method and Results> (Sample) Example 1 Body Powder Foam Comparative Example 1 Body Powder Foam (a) (Evaluation Method) 20 female specialized panels were requested to use the above samples and spread out. The smoothness, evenness of coating, and finish were evaluated on a scale of 10.

(result) As is clear from Table 1, the product of the present invention is superior in smoothness of spread, uniformity of sticking and finished condition as compared with the comparative control product.

(2) Evaluation of Stability <Experimental Method and Results> (Sample) Example 1 Body Powder Foam Comparative Example 1 Body Powder Foam (a) (Measuring Method) After filling each sample into a transparent aerosol bottle, shake tow. Disperse evenly and leave at 20 ° C. One day, one week,
The redispersibility of each of the 5 products left for 1 month and 3 months was measured by the number of shaking tows.

(result) As is clear from Table 2, the product of the present invention has good redispersibility, whereas the comparative product has a problem in terms of usability as a cosmetic product.

Claims (1)

(57) [Claims] 1. A spherical powder having an average particle size of 0.5 to 100 μ and an apparent specific gravity of 0.7 to 1.4 in an amount of 0.5 to 50% by weight, and a hydrophilic nonionic surfactant having an HLB of 8 or more in an amount of 0.05 to 10% by weight. %, And 3.0 to 70% by weight of other components, the stock solution of 3.6 to 96% by weight, and the propellant of 4.0 to 96.4% by weight.
Aerosol type cosmetics characterized by being composed by weight%.