JP2003201217A - Aerosol composition for hair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aerosol composition which is used for hair, can simply and quickly prevent that the scalp is looked through the hair, retains the effect for a long period, and does not give a foreign touch to the hair. <P>SOLUTION: This aerosol composition for the hair, comprising a liquidized gas and an aqueous undiluted solution containing a resin and a pigment, is characterized in that the thickness of the layer of an adhering product adhered to the hair is ≥10 μm, when the hair is sprayed with the aerosol composition and then dried. The adhering product layer gives thickened hairs, a high close hair concentration, and a good voluminousness to the hair. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an aerosol composition for hair. More specifically, the present invention relates to an aerosol composition for hair, which is capable of forming an adherent layer having a specific thickness or more when discharged onto the hair and drying the hair, thereby increasing the dense density of the hair.

[0002]

2. Description of the Related Art People who are concerned about having little hair
Hair growth agents are often used in the expectation of hair growth effect and hair loss prevention effect by a simple method. Since the hair restorer contains a blood circulation promoter, hair matrix stimulant, nutritional component, etc., the above effect may be obtained, but not all people have the above effect, and the effect is also It takes a long time to confirm.

On the other hand, there are wigs and hair transplants as a method for surely increasing the amount of hair, or a method for concealing the fact that the amount of hair is scarce. However, the cost is higher than that of a hair restorer, and many people also have resistance.

Further, as an intermediate method between the hair-growth agent and the wig, there is also a method in which short fibers are sprinkled on the hair or scalp and the short fibers are fixed with a spray containing a resin. With this method, it is possible to prevent the scalp from showing through easily and in a short time. However, the short fibers attached to the scalp tend to run off when the scalp sweats, and even if the short fibers are attached to the hair, when the resin peels off, the short fibers also peel off at the same time, so the effect does not last long. In addition, since the hair quality is different between the hair and the short fibers, there may be a feeling of strangeness.

[0005]

DISCLOSURE OF THE INVENTION The present invention can prevent the scalp from seeing through easily and in a short time, and the effect is long-lasting and does not give a feeling of strangeness to the hair quality. It relates to an aerosol composition.

[0006]

[Means for solving the problems] As a result of various studies,
It has been found that the above-mentioned problems can be solved by discharging an aerosol composition containing a resin and a pigment onto the hair and setting the thickness of the deposit layer when the hair is dried to a specific thickness or more.

That is, the present invention is an aerosol composition for hair, which comprises an aqueous stock solution containing a resin and a pigment and a liquefied gas, and the aerosol composition is discharged onto the hair and adhered to the hair when dried. The thickness of the deposited layer is 10 μm
The present invention relates to the aerosol composition for hair.

In the above aerosol composition for hair, the resin is preferably contained in the aqueous stock solution in an amount of 10 to 30% by weight.

In the hair aerosol composition, the degree of neutralization of the resin is preferably 15 to 110%.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The hair aerosol composition of the present invention comprises an aqueous stock solution containing a resin and a pigment and a liquefied gas, and the aerosol composition is discharged onto the hair and dried on the hair. It is characterized in that the thickness of the adhered substance layer is 10 μm or more.

The adhering substance layer adhered to the hair is an adhering substance layer obtained by adhering the aerosol composition to the hair and drying the components contained in the aerosol composition on the hair. And a pigment. Each of the hairs becomes thick due to the deposit layer, so that the dense density of the hairs becomes high and the hairs have a volume feeling.

The deposit layer is uniform over the entire hair and
It may be applied with a uniform thickness, but in order to give it a more voluminous feel, the applied material layer is applied locally,
Furthermore, it is preferable that the deposit layer is deposited so as to have a predetermined thickness.

The thickness of the deposit layer is preferably 10 μm or more, more preferably 15 μm or more. When the thickness of the adhered substance layer is less than 10 μm, each hair does not become thick enough, so that the density change of the hair is small and it is difficult to obtain the effect of making the hair look like a volume. The upper limit of the thickness of the deposit layer is not particularly limited, but the thickness of the deposit layer is 100 μm or less, and further 80
It is preferably μm or less. When it exceeds 100 μm, the hairs are stuck to each other in multiple layers, and the hairstyle tends to be unnatural. In the present invention, since the thickness of the original hair is changed by attaching the resin and the pigment to the hair, the change in the hair quality is less than that in the conventional method of attaching the short fibers.

The thickness (t (μm)) of the deposit layer is
The formula (1) is used from the difference between the diameter (D (μm)) of the hair with the adhered substance and the diameter (d (μm)) of the untreated hair after treating the hair with the aerosol composition of the present invention. Calculated.

[0015]

[Equation 1]

The resin contained in the aqueous undiluted solution of the aerosol composition of the present invention adheres to the hair itself, and also has the pigment contained in the aqueous undiluted solution adhered to the hair to have a specific thickness. It is a component for forming a kimono layer and making each hair look thicker.

Examples of the resin include crotonic acid-
Vinyl acetate-vinyl neodecanoate copolymer, polyurethane, dialkylaminoethyl (meth) acrylate-
(Meth) acrylic acid alkyl ester copolymer, acrylic acid octylamide-acrylic acid hydroxypropyl-
Butylaminoethyl methacrylate copolymer, vinylpyrrolidone-vinyl acetate copolymer, hydroxyethyl acrylate-butyl acrylate-methoxyethyl acrylate copolymer, alkanolamine acrylate, vinylpyrrolidone-N, N-dimethylaminoethyl Examples thereof include methacrylic acid copolymer sulfate, hydroxyethyl cellulose-dimethyldiallylammonium chloride, alkyl acrylate copolymer emulsion, alkyl acrylate-styrene copolymer emulsion and the like. Among them, crotonic acid-vinyl acetate-vinyl neodecanoate copolymer, polyurethane, and alkyl acrylate copolymer emulsion are preferably used because they are flexible and have excellent adhesion to hair.

The above resin is preferably added in an aqueous stock solution in an amount of 10 to 30% by weight, more preferably 12 to 25% by weight based on the solid content. If the amount of the resin compounded is less than 10% by weight, the thickness of the adhered substance layer on the hair becomes thin, and the hair tends to be unable to look thick enough. On the other hand, when it exceeds 30% by weight, it is difficult to exist in a stable state in the aqueous undiluted solution or the aerosol composition, and it tends to precipitate with time or become clogged with an aerosol valve or the like. In addition, the viscosity of the aqueous undiluted solution or the aerosol composition tends to be too high, making it difficult to handle.

It is preferable to use a water-soluble resin that has been neutralized with an alkaline agent at the time of preparing an aqueous stock solution or in advance.

Examples of the alkaline agent include aminomethyl propanol, aminomethyl propanediol,
Examples thereof include aminoethylpropanediol, monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine and potassium hydroxide.

When the resin is neutralized with the alkaline agent, the degree of neutralization is preferably 15 to 110%. Furthermore, 20-
It is preferably 105%. When the degree of neutralization is lower than 15%, the solubility of the resin in water becomes low, so that the resin becomes unstable in the aqueous undiluted solution and the aerosol composition, and tends to precipitate over time. While 110
If it exceeds%, the solubility of the resin in water becomes too large, and the resin does not precipitate until the water dries, which makes it easier to adhere evenly on the hair, making it difficult to form an adherent layer of a specified thickness. Become. In addition, the adherent layer tends to run off due to moisture or sweat, and the pH of the aqueous stock solution tends to be alkaline, which tends to cause irritation to the scalp and corrosiveness to the metal container filled with the aerosol composition. .

The degree of neutralization is calculated using equation (2).

[0023]

[Equation 2]

A large amount of the above-mentioned resin is mixed in a solid content of 10 to 30% by weight, the neutralization degree of the resin is set to a specific range of 15 to 110%, and the time for which the resin is deposited is adjusted to shorten the time. The resin easily precipitates, for example, when the aerosol composition is applied to the hair, or when the aerosol composition is spread and spread using a handbrush, a brush, etc., the resin precipitates. It is possible to form a deposit layer having a specific thickness or more by depositing unevenly on the substrate.

The pigment is used together with the above resin to form a thick deposit layer on the hair, and to make the deposit layer the same color as the hair so that the deposit layer is inconspicuous on the hair. Here, if the adhering substance layer is not conspicuous, the color of the adhering substance layer is not particularly limited to the same color as the hair.

Examples of the pigments include carbon black, calamine, gunjou, yellow iron oxide, black iron oxide,
Chromium oxide, chromium hydroxide, zinc oxide, magnesium oxide, titanium oxide, calcium carbonate, titanium mica, bentonite, kaolin, talc, silicic acid anhydride, magnesium silicate, aluminum silicate, mica, resole rubin BCA (red No. 202), Rake Red C (Red 203
No.), Rake Red CBA (Red No. 204), Resole Red (No. Red 205), Resole Red CA (No. 2 Red)
06), Resole Red BA (Red 207), Resole Red SR (Red 208), Brilliant Lake Red (R 219), Deep Maroon (Red 2)
No. 20), Toluidine Red (Red No. 221), Permanent Red (Red No. 228), Permanent Orange (Daidai No. 201), Bengin Orange G (Daidai No. 204), Bengin Jello G (Yellow 205).
No.), Brilliant Fast Scarlet (Red 404)
No.), Permanent Red F5R (Red No. 405), Hansa Orange (Daidairo No. 401), Hansa Yellow (Yellow No. 401), Phthalocyanine Blue (Blue 404).
No.) and the like, which are appropriately selected depending on the color of the hair.

The pigment is preferably added in an aqueous stock solution in an amount of 0.5 to 20% by weight, more preferably 1 to 15% by weight. When the amount of the pigment is less than 0.5% by weight, the deposit layer tends to be white and the finish tends to be poor. Further, the deposit layer is unlikely to be thick, and it is difficult to obtain the effect of increasing the dense concentration of hair. On the other hand, if it exceeds 20% by weight, the aerosol valve or the injection member tends to be clogged.

The aqueous undiluted solution used in the aerosol composition of the present invention contains the resin and the pigment, and water is used as a solvent for dissolving or dispersing the resin and the pigment. The water is not particularly limited, but examples thereof include purified water, ion-exchanged water, and physiological saline.

The water is blended with a resin, a pigment, a lower alcohol described later, a surfactant, an active ingredient, a dye and other ingredients, and the total amount of the aqueous stock solution is 100% by weight.
And the amount.

Further, in the above-mentioned solvent, in order to adjust the volatilization rate of the solvent, to adjust the time for the resin to be deposited (to form a deposit layer), and to increase the solubility of the resin,
Lower alcohols can be added.

Examples of the lower alcohol include
2 carbon atoms such as ethanol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol
~ 5 alcohols are included.

The blending amount of the lower alcohol is preferably 3 to 50% by weight, more preferably 5 to 40% by weight in the aqueous stock solution. When the amount of lower alcohol is less than 3% by weight,
It is difficult to obtain the volatilization effect due to the addition of the lower alcohol, and it tends to be impossible to improve the feeling of use, for example, the time for forming the deposit layer becomes long. On the other hand, 50
If the content exceeds 10% by weight, the effect of degreasing the scalp and hair is strong, and it tends to damage the scalp and hair. In addition, since the solvent volatilization rate becomes too fast, the adhered substance layer is likely to agglomerate on the hair. Especially when ejected in mist form, the resin may be deposited before it adheres to the hair, and it tends to cause problems such as scattering without adhering to the hair, and easy peeling even if adhered to the hair. .

Further, in addition to the resin, pigment, water and lower alcohol, a surfactant, an active ingredient, a dye and other ingredients may be added to the aqueous stock solution.

The above-mentioned surfactants are used for the purpose of foaming agents, emulsifiers, greasing agents, dispersants, etc., and are nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants. Agents, polymer surfactants, silicone surfactants and the like can be used.

Examples of the nonionic surfactant include sorbitan fatty acid ester, glycerin fatty acid ester, decaglycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, and polyoxyethylene. Glycerin fatty acid ester,
Polyethylene glycol fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene castor oil-hardened castor oil derivative, polyoxyethylene lanolin-
Lanolin alcohol-beeswax derivative, polyoxyethylene alkylamine-fatty acid amide and the like can be mentioned.

Examples of the anionic surfactant include saponified fatty acid, alkyl sulfate, polyoxyethylene alkyl ether sulfate, alkyl phosphate,
Examples thereof include polyoxyethylene alkyl ether phosphate, fatty acid soap, and α-olefin sulfonate.

Examples of the cationic surfactant include alkylammonium salt, alkylbenzylammonium salt and the like.

Examples of the amphoteric surfactant include betaine acetate and lecithin.

Examples of the polymeric surfactants include polyalkylvinylpyridinium, alkylphenol polymer derivatives, styrene-maleic acid polymer derivatives, and copolymers of alkylvinyl ether and maleic acid.

As the silicone-based surfactant, polyoxyethylene-methylpolysiloxane copolymer, polyoxypropylene-methylpolysiloxane copolymer,
Examples thereof include poly (oxyethylene-oxypropylene) -methyl polysiloxane copolymer.

The surfactant is 0.1 to 1 in the aqueous stock solution.
5% by weight, more preferably 0.5 to 10% by weight is preferably blended. When the content of the surfactant is less than 0.1% by weight, the effect of adding the surfactant is difficult to obtain, and particularly when discharged in the form of foam, excellent foamability and stable foam are obtained. It gets harder. On the other hand, when it exceeds 15% by weight, the feeling of use tends to be poor such as stickiness and irritation to the skin.

The above-mentioned active ingredient is appropriately selected according to the desired effect and purpose, and is a moisturizer, ultraviolet absorber, amino acid, vitamins, hormones, blood circulation promoter, hair matrix stimulant, keratolytic agent. , Anti-seborrheic agents, anti-inflammatory analgesics, percutaneous absorption enhancers, various extracts, bactericidal / preservatives, deodorant / deodorants, and various fragrances.

Examples of the moisturizer include polyethylene glycol, propylene glycol, glycerin,
Examples thereof include 1,3-butylene glycol, diglycerin, collagen, xylitol, sorbitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, casein, lecithin and urea.

Examples of the ultraviolet absorber include para-aminobenzoic acid, para-aminobenzoic acid monoglycerin ester, methyl anthranilate, octyl salicylate, phenyl salicylate, isopropyl paramethoxycinnamate, octyl paramethoxycinnamate, and 2,4. -Dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone and the like can be mentioned.

Examples of the amino acid include glycine, alanine, leucine, isoleucine, serine, tryptophan, cystine, cysteine, methionine, aspartic acid, glutamic acid, arginine, histidine,
Examples include lysine and hydroxylysine.

Examples of the vitamins include vitamin A oil, retinol, retinol palmitate, inosit, pyridoxine chloride, benzyl nicotinate, nicotinamide, dl-α-tocopherol nicotinate,
Examples thereof include magnesium ascorbyl phosphate, vitamin D2 (ergocasiferol), dl-α-tocopherol, dl-α-tocopherol acetate, pantothenic acid and biotin.

Examples of the hormones include elastradiol, ethinylestradiol and the like.

Examples of the blood circulation promoter include carpronium chloride, tocopherol, tocopherol acetate, capsicum tincture, canthari tincture, cembly extract, garlic extract, benzyl nicotinate and the like.

Examples of the hair matrix stimulating agent include, for example,
Examples include vitamin A, vitamin B, vitamin C, biotin, calcium pantothenate, and pantothenyl alcohol.

Examples of the keratolytic agent include salicylic acid and resorcin.

Examples of the antiseborrheic agent include pyridoxine, lecithin, diethylstilbestrol, sulfur, and thioxolone.

Examples of the anti-inflammatory and analgesic agents include azulene, allantoin, dipotassium glycyrrhetinate, diphenhydramine hydrochloride, hydrocortisone acetate and prednisone.

Examples of the percutaneous absorption enhancer include:
Examples thereof include d-limonene, 1-menthol and α-bisabolol.

Examples of the antioxidant include ascorbic acid, α-tocopherol, dibutylhydroxytoluene, butylhydroxyanisole and the like.

Examples of the various extracts include, for example, Dokudami extract, Oataku extract, licorice extract, peony extract, loofah extract, Quina extract, Clara extract, Primrose extract, rose extract, lemon extract, aloe extract, ginger root extract, eucalyptus extract, Sage extract, tea extract, seaweed extract, placenta extract,
Examples include silk extract.

Examples of the bactericidal / preservative include paraoxybenzoic acid ester, sodium benzoate, potassium sorbate, phenoxyethanol, benzalkonium chloride, chlorhexidine chloride, photosensitizer, hexachlorophene, parachlorometacresol and the like. .

Examples of the deodorant / deodorant include lauryl methacrylate, geranyl chlorate, acetophenone myristate, benzyl acetate, benzyl propionate, methyl benzoate, and methyl phenylacetate.

The amount of the active ingredient blended varies depending on the desired effect, but is preferably 0.01 to 20% by weight, more preferably 0.05 to 15% by weight in the aqueous stock solution. If the content of the active ingredient is less than 0.01% by weight, it is difficult to obtain the effect of the active ingredient. On the other hand, if it exceeds 20% by weight, some active ingredients may adversely affect hair or scalp. is there.

The above-mentioned dye is used for dyeing hair and making the color of the adhered layer and hair more uniform, and examples thereof include acid dyes, basic dyes, oil-soluble dyes and oil-based dyes.

Examples of the acid dyes include amaranth (red No. 2), erythrosine (red No. 3), new coccin (red No. 102), phloxine B (red 104).
No.), Rose Bengal (Red No. 105), Acid Red (Red No. 106), Tartrazine (Yellow No. 4), Sunset Yellow (Yellow No. 5), Fast Green (Green 3).
No.), Brilliant Blue FCF (Blue No. 1), Indigo Carmine (Blue No. 2) Resor Rubin B (Red 201)
No.), Fast Acid Magenta (Red 227), Eosin YS (Red 230), Phloxine BK (Red 2)
31), Rose Bencal K (red 232), Orange II (daidai 205), erythrosin yellow NA (daily 207), uranine (yellow 202), quinoline yellow WS (yellow 203), alizanin. Cyanine green F (green 201), pyranine conc (green 2)
04), Light Green SF Yellow (Green No. 205), Patent Blue NA (Blue No. 202), Patent Blue (Blue No. 203), Alphazurin FG (Blue 205).
No.), Resorcin Brown (Brown No. 201), Violamine R (Red No. 401), Ponceau 3R (Red No. 502)
No.), Ponceau (Red No. 503), Ponceau SX (Red No. 504), Fast Red S (Red No. 506), Orange I (Daidai No. 402), Paula Yellow 5G (Yellow No. 402), Naphthol Yellow S (Yellow 403). issue),
Methanil Yellow (Yellow No. 406), Fast Light Yellow 3G (Yellow No. 407), Naphthol Green B (Green No. 401), Guinea Green B (Green No. 402), Alizrole Purple (Purple No. 401), Naphthol Blue Black (Black 401) No.) etc.

Examples of the basic dye include rhodamine B (red No. 213) and rhodamine B acetate (red No. 214). Examples of the oil-soluble dyes include rhodamine B acetate (red 21
5), tetrachlorotetrabromofluorescein (red 218), sudan III (red 225), jodhfluorescein (daidai 206), fluorescein (yellow 201), quinoline yellow SS (yellow 204)
No.), Kinizarin Green SS (Green No. 202), Alizurin Purple SS (Purple No. 201), Medicinal Scarlet (Red No. 501), Oil Red XO (Red No. 505).
No.), Orange SS (daidai color 403), Yellow A
B (yellow 404), yellow OB (yellow 405), and Stan blue B (blue 403).

Examples of the oily dye include tetrabromofluorescein (red No. 223), dibromofluorescein (daidai No. 201) and the like.

The dye is preferably added in an amount of 0.1 to 15% by weight, more preferably 0.5 to 10% by weight in the aqueous stock solution. When the content of the dye is less than 0.1% by weight,
The dyeing effect tends to be inadequate, and if the color of the deposit layer and the color of the hair before treatment are large, there is a difference between the color of the deposit layer and the hair before treatment, causing a feeling of strangeness. . On the other hand, 1
If it exceeds 5% by weight, it becomes difficult to mix it with the aqueous stock solution.

Examples of the other components include polyhydric alcohols, higher alcohols, oil components, plasticizers, polymer compounds,
Examples include pH adjusters.

The polyhydric alcohol is used as a solvent, a solubilizer, a moisturizer, a warming agent, and the like. For example, ethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin, xylitol, Examples thereof include sorbitol, diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene glycol, diglycerin and polyethylene glycol.

The higher alcohol is used as a hair styling aid, a hair styling agent or a foam styling agent for adjusting foaming property, foam quality, foam specific gravity and the like. For example, lauryl alcohol, cetyl alcohol, stearyl alcohol, myristyl alcohol, oleyl. Alcohol, lanolin alcohol,
Examples include hexyldecanol and isostearyl alcohol.

The oil component is used as a solvent for the oil-soluble component, and is used for the purpose of improving the feeling of use, such as adjusting the properties such as the flexibility of the deposit layer. Examples of the oil component include silicones such as methylpolysiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and methylphenylpolysiloxane; isopropyl myristate, cetyl octanoate, Octyldodecyl myristate, isopropyl palmitate, hexyl laurate, butyl stearate, cetyl lactate, oleyl oleate, ethyl acetate, diethyl phthalate, diethoxyethyl phthalate, diethoxyethyl succinate, diisostearyl malate, etc. Ester oils; hydrocarbons such as pentane, hexane, squalane, squalene, liquid paraffin, isoparaffin, kerosene; lauric acid, myristic acid, palmitic acid, steer Phosphate, higher fatty acids such as oleic acid; beeswax, wax, such as lanolin; avocado oil, turtle oil, corn oil, mink oil, olive oil, rapeseed oil, sesame oil, castor oil, linseed oil, jojoba oil, germ oil,
Examples include fats and oils such as palm oil and palm oil.

The plasticizer is used for the purpose of adjusting properties such as hardness and flexibility of the deposit layer. Examples of the plasticizer include citric acid esters such as acetyltrimethyl citrate and acetyltributyl citrate; diethyl phthalate, dibutyl phthalate, dioctyl phthalate,
Phthalates such as diamyl phthalate and diethylhexyl phthalate; phosphoric esters such as tributyl phosphate and tricresyl phosphate; isobutyric acid / sucrose acetate,
Examples thereof include adipic acid esters such as methylphthalylmethylglycolate, ethylphthalylethylglycolate, diethyl adipate, and dibutyl adipate.

The above-mentioned polymer compound adjusts the viscosity of the aqueous undiluted solution, and when it is ejected in the form of gel or mist, the ejected particles are enlarged to improve the adhesiveness of the aqueous undiluted solution, and foam. When it is discharged in the form of a bubble, it is used for the purpose of increasing the liquid film strength of the foam and improving the stability of the foam.
Examples of the polymer compound include agar, casein, dextrin, gelatin, pectin, starch, sodium alginate, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, nitrocellulose, crystalline cellulose, modified potato starch, polyvinyl alcohol, polyvinyl methyl. Examples thereof include ether, polyvinylpyrrolidone, carboxyvinyl polymer, sodium polyacrylate and the like.

The pH adjusting agent is used in consideration of irritation to the scalp, in order to stabilize the aqueous stock solution and the aerosol composition, or to reduce the corrosion of the aerosol container filled with the aerosol composition. Used. Examples of the pH adjuster include citric acid, lactic acid, malic acid, succinic acid, adipic acid, tartaric acid, glycolic acid,
Examples thereof include phthalic acid, malonic acid, ascorbic acid, organic acids such as acetic acid, sodium dihydrogen phosphate, potassium carbonate, sodium hydrogen carbonate and the like.

The aqueous stock solution used in the aerosol composition of the present invention is previously neutralized with an alkaline agent to the aqueous stock solution to which the lower alcohol, the surfactant, the active ingredient, the dye, and other components are optionally added. It is produced by a method of blending a resin or a method of blending each component and then neutralizing the resin in an aqueous stock solution.

20 ° C. of the aqueous stock solution thus obtained
PH at 6.5-8.0, and even 6.7-7.8.
Is preferred. If the pH of the aqueous stock solution is lower than 6.5, the resin tends to precipitate in the aqueous stock solution or the aerosol composition, while if the pH exceeds 8.0, irritation to the skin and corrosiveness to the container occur. Tends to be stronger.

The aerosol composition of the present invention can be obtained by filling the above-mentioned aqueous stock solution and the liquefied gas in an aerosol container and mixing them. Alternatively, the aqueous stock solution and the liquefied gas may be mixed in advance to produce an aerosol composition, which may then be filled in an aerosol container.

The liquefied gas is prepared by foaming an aqueous stock solution with mist,
The liquefied gas is a component to be discharged in the form of gel and the like, and examples of the liquefied gas include butane, propane, liquefied petroleum gas which is a mixture thereof, dimethyl ether, and a mixture thereof. The liquefied gas may be mixed and used with a liquid hydrocarbon such as pentane or hexane.

The mixing ratio (weight ratio) of the aqueous stock solution and the liquefied gas is as follows: aqueous stock solution / liquefied gas = 99.5 / 0.5 to 50
/ 50, and more preferably 99/1 to 60/40. If the mixing ratio of the aqueous undiluted solution is larger than 99.5% by weight, it is difficult to obtain the effect of mixing the liquefied gas.
If it is less than 0% by weight, the aqueous stock solution and the liquefied gas are likely to be separated, and it tends to be difficult to discharge a uniform composition.

The aerosol composition of the present invention may be discharged in the form of foam, mist (spray), gel, or mist, followed by foaming on the adhering surface, or gel and then foaming. After that, foam gel and the like can be mentioned. Of these ejection forms, foams, spray foams, and post-foaming gels that foam on the hair are easy to spread on the hair, and the deposit layer is non-uniform and tends to adhere thickly. preferable.

An aerosol product can be obtained by filling an aerosol container with the aqueous stock solution and the liquefied gas and then attaching a discharge member. The aerosol container comprises a container body having pressure resistance and an aerosol valve. As the container body, a metal container such as aluminum or tin plate, a resin such as polyethylene terephthalate, or a glass container such as pressure resistant glass can be used. Furthermore, a double container having a shrinkable inner bag or a movable piston inside the container can be used. In this case, the inner bag for filling the aerosol composition is contracted, or the pressure agent for moving the piston is used. Is preferably filled. As the pressurizing agent, it is preferable to use nitrogen, carbon dioxide gas, or compressed gas such as compressed air. Further, the aerosol valve is a valve that is attached to the container body to make the aerosol container airtight and discharge the aerosol composition by a discharging operation.

When the aerosol composition thus obtained is applied to the hair, it forms an adhering substance layer having a specific thickness or more on the surface of the hair, and each hair becomes thick. as a result,
It is possible to easily and surely increase the dense density of hair, and to show a lot of hair.

[0079]

The present invention will be described in detail below based on examples, but the present invention is not limited to these.

Examples 1-3 and Comparative Examples 1-2 Preparation of Aqueous Stock Solution <Stock solution composition of Example 1> (wt%) Polyurethane (* 1) 65.0 Mica Black 5.0 95% Ethanol 15.0 Poly Oxyethylene (20) Cetyl ether (* 2) 1.0 Polyoxyethylene-methylpolysiloxane copolymer (* 3) 1.0 Decamethylcyclopentasiloxane (* 4) 5.0 Perfume 0.3 Crosslinked methyl Polysiloxane-polyoxyethylene alkyl (C12-14) ether (12.EO) -phenoxyethanol-carboxyvinyl polymer-sodium hydroxide purified water mixture (* 5) 3.0 methyl paraoxybenzoate (* 12) 0. 1 Citric acid 0.09 Purified water 4.51 Total 100.0

The degree of neutralization of polyurethane is 100%.

<Stock solution composition of Example 2> (wt%) Crotonic acid-vinyl acetate-vinyl neodecanoate copolymer (* 6) 15.0 Mica black 5.0 95% ethanol 20.0 Aminomethyl propanol 0. 6 Polyoxyethylene (20) Polyoxypropylene (8) Cetyl ether (* 7) 1.5 Octamethyltetrasiloxane (* 8) 5.0 Perfume 0.2 Modified potato starch (* 9) 3.0 Paraoxybenzoic acid Methyl (* 12) 0.1 Purified water 49.6 Total 100.0

The degree of neutralization of the crotonic acid-vinyl acetate-vinyl neodecanoate copolymer is 38.7%.

<Stock Solution Composition of Example 3> (wt%) Crotonic Acid-Vinyl Acetate-Vinyl Neodecanoate Copolymer (* 6) 15.0 Mica Black 3.0 Mica Brown 3.0 95% Ethanol 20.0 Triethanolamine 0.6 Polyoxyethylene (20) Cetyl ether (* 2) 1.0 Polyoxyethylene-methylpolysiloxane copolymer (* 3) 1.0 Octamethylcyclotetrasiloxane (* 8) 5.0 Fragrance 0.2 Methyl paraoxybenzoate (* 12) 0.1 Purified water 51.1 Total 100.0

The degree of neutralization of the crotonic acid-vinyl acetate-vinyl neodecanoate copolymer is 23.1%.

<Stock Solution Composition of Comparative Example 1-Conventional Styling Foam: Super Hard Type> (% by Weight) Octylamide Acrylate-Hydroxypropyl Acrylate-Butylaminoethyl Methacrylate Copolymer (* 10) 5.0 95 % Ethanol 20.0 Aminomethyl propanol 0.89 Polyoxyethylene (20) cetyl ether 1.0 Polyoxyethylene-methylpolysiloxane copolymer 1.0 Decamethylcyclopentanesiloxane 3.0 Perfume 0.3 Crosslinking methyl Polysiloxane-polyoxyethylene alkyl (C12-14) ether (12.EO) -phenoxyethanol-carboxyvinyl polymer-sodium hydroxide purified water mixture 1.0 methyl paraoxybenzoate 0.1 purified water 67.71 total 100 .0

The degree of neutralization of the octyl amide acrylate-hydroxypropyl acrylate-butylaminoethyl methacrylate copolymer is 100%.

<Stock Solution Composition of Comparative Example 2> (wt%) Polyurethane (* 1) 65.0 95% Ethanol 15.0 Polyoxyethylene (20) Cetyl ether (* 2) 1.0 Polyoxyethylene-methyl poly Siloxane copolymer (* 3) 1.0 Decamethylcyclopentasiloxane (* 4) 5.0 Perfume 0.3 Crosslinking methyl polysiloxane-polyoxyethylene alkyl (C12-14) ether (12.EO) -Phenoxyethanol / carboxyvinyl polymer-Sodium hydroxide purified water mixture (* 5) 3.0 Methyl paraoxybenzoate (* 12) 0.1 Citric acid 0.09 Purified water 9.51 Total 100.0

The degree of neutralization of polyurethane is 100%.

Preparation of Aerosol Composition The above-mentioned aqueous stock solution and liquefied petroleum gas were filled in an aerosol container (pressure resistant glass container: full volume 100 ml) with the following aerosol composition to prepare an aerosol composition.

<Aerosol composition> (wt%) Undiluted solution 90.0 LPG (* 11) 10.0 Total 100.0 * 1: Rubyset P. U. R (trade name), BASF polymer solid content 30% by weight, ethanol 10% by weight, purified water 60% by weight 100% neutralization with aminomethyl propanol (AMP) * 2: BC20TX (trade name), Nikko Chemicals (stock) )
* 3: SH3771M (trade name), Toray Dow Corning Silicone Co., Ltd. * 4: DC345 (trade name), Toray Dow Corning Silicone Co., Ltd. * 5: BY29-119 (trade name), Toray Dow Corning Silicone Manufactured by * 6: RESIN 28-2930 (trade name), Japan NS
C Co., Ltd. * 7: PBC44 (trade name), Nikko Chemicals Co., Ltd. * 8: SH-244 (trade name), Toray Dow Corning Silicone Co., Ltd. * 9: Dry Flow PC (trade name), Japan NSC Co., Ltd.
Product * 10: Amphomer 28-4910 (trade name),
Manufactured by Japan NSC Co., Ltd. * 11: LPG 0.34 MPa (20 ° C) * 12: Plating M (trade name), manufactured by Ueno Pharmaceutical Co., Ltd.

Test / Evaluation The following tests were carried out on the obtained aerosol composition. The evaluation results of each test are shown in Table 1.

(1) Measurement of thickness of adhering material layer The obtained aerosol composition was used for a hair bundle (hair diameter 80 to 10).
(0 μm, length 10 cm) and then naturally dry it, then take out 10 hair bundles and take a photomicrograph one by one to measure the thickness of the hair where the adherent layer adheres. Was measured. It should be noted that the same measurement was performed before the aerosol composition was discharged, and the thickness (average value) of the deposit layer was calculated from the formula (1).

(2) Adherence state of the adhered matter layer The appearance of the adhered matter layer adhering to the hair when photographed with the micrograph was evaluated.

Evaluation criteria ◯: The deposit layer is unevenly attached to the hair. X: The deposit layer is uniformly attached to the hair.

(3) Change in Hair Concentration Twenty panelists were asked to eject the aerosol composition onto the hair, and it was evaluated by appearance whether or not the hair concentration was changed.

Evaluation Criteria ◯: 16 or more people evaluated that their hair looked dark. Δ: 10 to 15 people evaluated that the hair looks dark. X: 9 or less evaluated as having dark hair.

(4) Change in hair quality 20 panelists were asked to eject the aerosol composition onto their hair, and it was evaluated whether or not the hair quality had changed in appearance.

Evaluation Criteria O: 16 or more people evaluated that the hair quality did not change (no discomfort). Δ: 10 to 15 people evaluated that the hair quality did not change (no discomfort). X: 9 or less evaluated as having no change in hair quality (no discomfort).

[0100]

[Table 1]

[0101]

When the aerosol composition of the present invention is applied to hair, it forms an adhering substance layer having a specific thickness or more on the surface of the hair, and each hair becomes thick. As a result, it is possible to easily and surely increase the dense density of the hair, and it is possible to make more hair appear. Moreover, the effect can be maintained for a long time, and the hair does not feel uncomfortable.

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Claims (3)

[Claims] 1. An aerosol composition for a hair, which comprises an aqueous stock solution containing a resin and a pigment and a liquefied gas, and the deposit adhered to the hair when the aerosol composition is discharged onto the hair and dried. An aerosol composition for hair, which has a layer thickness of 10 μm or more. 2. The hair aerosol composition according to claim 1, which contains 10 to 30% by weight of the resin in the aqueous stock solution. 3. The hair aerosol composition according to claim 1, wherein the degree of neutralization of the resin is 15 to 110%.