JP6292778B2 - Aerosol hair cosmetic composition second agent - Google Patents

Description

  The invention which this application discloses relates to the 2nd agent of an aerosol type hair cosmetics composition. Specifically, the second agent used by filling a double-structured container housed in the same outer container with the first inner container filling the first agent and the second inner container filling the second agent, and The present invention also relates to an aerosol hair cosmetic composition comprising the second agent and an aerosol hair cosmetic product.

  The 1st agent containing an alkaline agent and the 2nd agent containing an oxidizing agent are mixed at the time of use. In a so-called aerosol hair cosmetic product utilizing a propellant, the first agent and the second agent of the aerosol hair cosmetic composition are separately filled in an aerosol container and discharged from the aerosol container during use.

  A propellant can be divided roughly into liquefied gas and compressed gas. When it is desired to discharge the filling material in the form of foam, usually a liquefied gas is used, and the aerosol container is filled with a mixture of the first agent or the second agent and the liquefied gas. In this case, since the first agent or the second agent and the liquefied gas are mixed, the container may have a single layer structure filled with the mixture.

  Further, a configuration in which the first agent, the second agent, and the propellant are filled in separate spaces is also possible. In this case, since the filling space for the propellant and the filling space for the first agent and the second agent are required, the container is a double structure container. In the dual structure container, the propellant provides a pressure for discharging the first agent and the second agent, and the inner container filled with the first agent and the second agent is elastically deformed by the pressure, and remains as an emulsion. The filling material can be discharged. Compressed gas and liquefied gas can be used as a propellant.

  The first agent contains an alkali agent, and the second agent contains an oxidizing agent. Therefore, the first agent and the second agent have different properties and need to be stored well until use. In aerosol-type hair cosmetic products, since the filling material is discharged from the aerosol container using the propellant, the amount and pressure of the propellant in the aerosol container are appropriately adjusted.

  The following Patent Document 1 discloses an aerosol container that can be used in a hair cosmetic composition. The following Patent Document 1 discloses a so-called “double can” type aerosol container (see Patent Document 1 FIGS. 1 to 3). One specific example of the aerosol container is that the first container 11 and the second container 13 are respectively filled with a propellant that is a compressed gas and the first agent or the second agent, and the first agent and the second agent are creamed. The liquid can be discharged as it is. As is apparent from the structure of the aerosol container, there may be a difference in the amount of propellant / the pressure in the container between the first container 11 and the second container 13. The amount of propellant / pressure in the container can be set freely in each container, so the first agent and the second agent have different viscosities / viscosity, or the second agent is generated from the oxidizing agent (particularly hydrogen peroxide) Easy to deal with oxygen.

  The following Patent Document 2 discloses an aerosol container that can be used in a hair cosmetic composition. Patent Document 2 FIGS. 3 to 6 disclose a double-structure aerosol container in which a first inner container filled with a first agent and a second inner container filled with a second agent are accommodated in the same outer container. To do.

  Patent Document 3 below FIG. 1 discloses a dual-structure aerosol container in which a first inner container filled with a first undiluted solution and a second inner container filled with a second undiluted solution are accommodated in the same outer container.

  Patent Document 4 listed below is suitable for mixing with the first agent, is not sticky when applied to hair, has excellent extensibility, is well-adapted to hair, has excellent decolorizing power, and has a uniform emulsified state during preparation. Disclosed is a second agent, said to be a viscosity.

JP 2002-240873 A JP 2001-122364 A JP 2012-229318 A JP 2007-217293 A

  Since the first inner container and the second inner container are in the same outer container, the first agent and the second agent are placed under the same pressure in the aerosol container disclosed in Patent Document 2 FIGS. . Therefore, the first agent and the second agent cannot be placed under different pressures as in the double can type aerosol container.

  However, the double-structured container in which the first inner container filled with the first agent and the second inner container filled with the second agent are in the same outer container has the merit that it can be produced at a low cost with a small number of components. is there. In addition, there is an advantage that the degree of freedom in designing the shape of the outer container is high.

  In the double can type aerosol container, two double structure containers are lined up to form a wide shape, and there is room for improvement from the viewpoint of ease of grasping the aerosol container. The double-structure container in which the first inner container and the second inner container are in the same outer container can be easily grasped with the outer container having a substantially cylindrical shape.

  In consideration of the above, the present inventor decided to adopt a double-structured container.

  Next, the aerosol-type hair cosmetic products that have been put on the market for the past are made of light-impermeable material such as aluminum, the remaining amount is not visible, and the remaining amount cannot be accurately determined. It was. In order to prevent a situation in which the hair cosmetic composition is insufficient during the treatment operation, some responded by arranging a plurality of identical products at hand.

  Therefore, when all or part of the outer container in the aerosol container is made light transmissive, the shape of the inner container filled with the first agent or the second agent can be visually confirmed. Moreover, when the said inner container itself is a light transmittance, the residual amount of a filler can be visually recognized. Therefore, when a light-transmitting material is used in the outer container and the inner container of the aerosol container, it is possible to solve the problem that the remaining amount of the aerosol-type hair cosmetic product that has been marketed conventionally cannot be visually recognized.

  However, while hydrogen peroxide, which is an oxidizing agent, is excellent in melanin decolorizing power in hair, there is room for improvement in storage stability. In particular, hydrogen peroxide becomes unstable under sunlight irradiation.

  When hydrogen peroxide is decomposed, not only the oxidizing power is reduced, but also there is a problem that the generated oxygen moves to the propellant filling space. In addition, if oxygen generated by the decomposition of hydrogen peroxide stays in the second inner container, oxygen is released under atmospheric pressure simultaneously with the second agent when the second agent is discharged from the dual structure container. In addition, there is a problem that the second agent is scattered.

  Patent Document 4 evaluates the uniformity of emulsification and the appropriateness of viscosity at the time of preparing the second agent. However, in the said patent document 4, storing the 2nd agent under sunlight irradiation is not examined at all.

  In the double structure container in which the first inner container and the second inner container are in the same outer container, the outer container and the second inner container include a light-transmitting material in the structure, and the second agent in the second inner container If the remaining amount is visible, it is assumed that the second agent is placed under sunlight irradiation, and it is important to improve the stability of hydrogen peroxide.

  One of the advantages of hair cosmetic products using aerosol containers is that they can be used in multiple batches. Hair cosmetics are often stored and distributed in unopened boxes (light-blocked) and stored and distributed, but once opened, the aerosol container must be stored in sunlight. There are also many.

  Therefore, the inventor of the present application has conducted intensive research to improve the stability of hydrogen peroxide in the second agent under sunlight irradiation. As a result, it was found that the stability of hydrogen peroxide can be improved by making the second agent into an emulsion and setting the average particle size to a certain value or more, and completed the invention disclosed in the present application.

  Therefore, the first inner container filled with the first agent and the second inner container filled with the second agent are filled in a double-structured container housed in the same outer container, and used by discharging. It is a problem to be solved to provide a second agent that is excellent in hydrogen peroxide stability. Moreover, it is set as the problem which should be solved to provide the aerosol type hair cosmetic composition which contains the said 2nd agent in a structure, and an aerosol type hair cosmetics article.

(First invention)
The first invention of the present application for solving the above-described problems is as follows.
A second agent of an aerosol hair cosmetic composition comprising a first agent containing an alkaline agent and a second agent which is an emulsion containing hydrogen peroxide,
In the second agent, the first inner container filled with the first agent and the second inner container filled with the second agent, which are provided independently, are housed in the same outer container, The space between each inner container becomes a propellant-filling space filled with a propellant, and the outer container and the second inner container include a light-transmitting material in the configuration, and the second content is formed from the outside of the outer container. The inside of the container is visible, and is used by filling a double-structured container equipped with a mechanism for simultaneously discharging the first agent and the second agent,
The average emulsified particle size is 1 μm or more,
Second agent.

(Second invention)
The second invention of the present application for solving the above-described problems is as follows.
It is the 2nd agent as described in 1st invention which contains 1 mass% or more of C12-C22 higher alcohol.

(Third invention)
The third invention of the present application for solving the above problem is
An aerosol hair cosmetic composition comprising a first agent containing an alkaline agent and a second agent according to the first or second invention.

(Fourth invention)
In order to solve the above problems, the fourth invention of the present application is:
The aerosol hair cosmetic composition according to the third invention;
The first inner container filled with the first agent and the second inner container filled with the second agent, which are provided independently, are housed in the same outer container, and the outer container and each inner container The space between them is a propellant-filled space filled with a propellant, and the outer container and the second inner container include a light-transmitting material, and the inner side of the second inner container is visually recognized from the outer side of the outer container. An aerosol-type hair cosmetic product comprising a double-structured container having a mechanism for simultaneously discharging the first agent and the second agent.

  The second agent disclosed in the present application is excellent in hydrogen peroxide stability even under sunlight irradiation. Therefore, the said 2nd agent is suitable for filling and using the double structure container which can visually recognize the residual amount. Moreover, the aerosol-type hair cosmetic composition and aerosol-type hair cosmetic product which contain the said 2nd agent in a structure can be obtained.

It is a front view of the aerosol container in which the 1st inner container and the 2nd inner container are in the same outer container.

The invention disclosed in the present application will be described below including the best mode.
The aerosol hair cosmetic composition disclosed in the present application includes a first agent containing an alkaline agent and a second agent which is an emulsion containing hydrogen peroxide.

[First agent]
The first agent contains an alkaline agent. Examples of the alkali agent include ammonia, alkanolamine (monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, etc.), organic amines (2-amino-2-methyl-1-propanol). 2-amino-2-methyl-1,3-propanediol, guanidine, etc.), basic amino acids (arginine, lysine, etc.) and their salts, inorganic alkalis (sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate) Etc.).

  The first agent may contain one or more alkali agents. The content of the alkaline agent is preferably set to an amount that makes the pH of the first agent in the range of 8-12.

  When the aerosol hair cosmetic composition is an oxidative hair dye composition, the first agent contains an oxidative dye.

  Oxidative dyes are compounds that can develop color by oxidative polymerization. Examples of oxidation dyes include dye intermediates, couplers, and melanin precursors. The first agent may contain one or more of oxidation dyes.

  More specifically, for example, as oxidative dyes, phenylenediamine and derivatives thereof, phenol derivatives, aminophenol and derivatives thereof, diphenylamine and derivatives thereof, pyridine derivatives, pyrimidine derivatives, pyrazole derivatives, pyrrolidine derivatives, toluene derivatives, indole derivatives, Examples include pyrrole derivatives and imidazole derivatives.

  More specifically, for example, as a dye intermediate, phenylenediamines (excluding metaphenylenediamine), aminophenols (however, metaaminophenol, 2,4-diaminophenol and paramethylaminophenol are included. Toluylenediamine (except for toluene-3,4-diamine and toluene-2,4-diamine), diphenylamines, diaminophenylamines, N-phenylphenylenediamines, diaminopyridines ( However, 2,6-diaminopyridine is excluded).

  As couplers, pyrogallol, resorcin, catechol, metaaminophenol, metaphenylenediamine, 2,4-diaminophenol, 1,2,4-benzenetriol, toluene-3,4-diamine, toluene-2,4-diamine, Hydroquinone, α-naphthol, 2,6-diaminopyridine, 1,5-dihydroxynaphthalene, 5-aminoorthocresol, paramethylaminophenol, 2,4-diaminophenoxyethanol, gallic acid, tannic acid, ethyl gallate, gallic acid Examples include methyl, propyl gallate, pentaploid, 5- (2-hydroxyethylamino) -2-methylphenol, and the like.

  The first agent may contain a direct dye. The first agent itself can be colored to facilitate discrimination from the second agent. Examples of the direct dye include acid dyes, basic dyes, natural dyes, nitro dyes, disperse dyes, and HC dyes.

  In addition to the components described above, the first agent may contain any optional component. Examples of the optional component include water such as purified water, distilled water, and ion-exchanged water, water-soluble polymers, solvents, hydrocarbons, waxes, higher fatty acids, esters, higher alcohols, silicones, nonionic surfactants, Anionic surfactants, cationic surfactants, amphoteric surfactants, thickeners, amino acids, sugars, antiseptic ingredients, chelating ingredients, pH adjusting ingredients, antioxidants such as anhydrous sodium sulfite, plant or herbal extracts Further, vitamins containing ascorbic acids, fragrances, ceramides, ultraviolet absorbers, antistatic agents, hair softeners, penetration enhancers and the like may be blended.

  It is preferable that a 1st agent is discharged from the double structure container mentioned later with an emulsion. Therefore, it is preferable that the 1st agent with the 1st inner container filled is an emulsion.

  Moreover, it is preferable that a 1st agent is a cream form and is discharged from the double structure container mentioned later. The viscosity of the creamy first agent may be 3000 to 40000 mPa · s. Viscosity was measured using a B-type viscometer at 25 ° C. for 1 minute, rotation speed: 12 rpm, No. 3 rotor (when the viscosity is 5000 mPa · s or less), No. 4 rotor (when the viscosity is 5000 mPa · s or more) Measure below. For the viscometer, for example, a VISCOMETER TV-10 viscometer may be used.

[Second agent]
The present application is a second agent of an aerosol hair cosmetic composition comprising a first agent containing an alkaline agent and a second agent which is an emulsion containing hydrogen peroxide,
In the second agent, the first inner container filled with the first agent and the second inner container filled with the second agent, which are provided independently, are housed in the same outer container, The space between each inner container becomes a propellant-filling space filled with a propellant, and the outer container and the second inner container include a light-transmitting material in the configuration, and the second content is formed from the outside of the outer container. The inside of the container is visible, and is used by filling a double-structured container equipped with a mechanism for simultaneously discharging the first agent and the second agent,
The average emulsified particle size is 1 μm or more,
A second agent is disclosed.

  The second agent contains an oxidizing agent. In the second agent disclosed in the present application, hydrogen peroxide is an essential component. The content of hydrogen peroxide in the second agent is preferably 0.1 to 15% by mass, preferably 1.0 to 9.0% by mass, more preferably 2.0 to 6.0% by mass.

  The pH of the second agent is preferably 2-6, more preferably 3-5.

  The second agent may contain one or more suitable oxidizing agents in addition to the hydrogen peroxide. For example, urea peroxide, melamine peroxide, sodium percarbonate, potassium percarbonate, sodium perborate, potassium perborate, sodium peroxide, potassium peroxide, magnesium peroxide, barium peroxide, calcium peroxide, peroxide Examples include strontium, a hydrogen peroxide adduct of sulfate, a hydrogen peroxide adduct of phosphate, and a hydrogen peroxide adduct of pyrophosphate.

  Since the second agent is an emulsion, it preferably contains a surfactant and an oil component.

  As the surfactant, an amphoteric surfactant such as a cationic surfactant, an anionic surfactant, a nonionic surfactant, or cocamidopropyl betaine can be used.

  Examples of the cationic surfactants include alkyltrimethylammonium salts such as stearyltrimethylammonium chloride and lauryltrimethylammonium chloride, alkenyltrimethylammonium salts, dialkyldimethylammonium salts, dialkenyldimethylammonium salts, alkyloylamidopropyldimethylamine, and alkylpiperids. There are nium salts and benzalkonium salts.

  Examples of the anionic surfactant include alkyl sulfates, polyoxyethylene (hereinafter also referred to as POE) sodium lauryl ether sulfate (sodium laureth sulfate), alkenyl sulfate, alkenyl ether sulfate, alkane sulfonic acid There are salts, olefin sulfonates, phosphate mono- or diester types, and the like.

  Examples of the nonionic surfactant include polyoxyalkylene alkyl ethers such as POE cetyl ether and POE behenyl ether, polyoxyalkylene fatty acid esters, alkyl polyglucosides, sugar esters, sugar amides, and alkyl polyglyceryl ethers.

  From the viewpoint of the temporal stability of the average emulsified particle size, the second agent preferably contains a nonionic surfactant.

  The second agent preferably contains a POE alkyl ether which is a nonionic surfactant. It is preferable that carbon number of the alkyl part which comprises the said POE alkyl ether is 12-22. Moreover, it is preferable that the alkyl part which comprises the said POE alkyl ether is linear.

  From the viewpoint of obtaining a good average emulsified particle size in the second agent, the second agent contains a cationic surfactant and an anionic surfactant, and the smaller content of both the surfactants is 0.00. It is preferable to set it as 01-0.5 mass%. More preferably, the surfactant having a low content is a cationic surfactant. It is considered that good hydrogen peroxide stability can be obtained while providing a difference in content between the cationic surfactant and the anionic surfactant and reducing the amount of the complex formed by the both surfactants.

  The content of the surfactant in the second agent is preferably 0.1 to 10.0% by mass, more preferably 0.3 to 7.0% by mass, and still more preferably 0.5 to 5.0% by mass. is there.

  The content of the nonionic surfactant in the second agent may be 0.3% by mass or more, may be 0.4-7% by mass, and may be 0.5-5% by mass.

  In the second agent, the content of the nonionic surfactant having an HLB value of 12 to 17 may be less than 1.5% by mass, or 1.3% by mass or less. The HLB value of the nonionic surfactant can be obtained from the Griffin equation.

  From the viewpoint of the stability of hydrogen peroxide under sunlight irradiation, the second agent preferably contains 1% by mass or more of a higher alcohol having 12 to 22 carbon atoms. The content of the higher alcohol having 12 to 22 carbon atoms in the second agent may be 1 to 10% by mass or 3 to 8% by mass. The higher alcohol is a monohydric alcohol.

  In the said patent document 4, storing the 2nd agent under sunlight irradiation is not considered at all. Therefore, Patent Document 4 does not disclose a technical finding that improves the stability of hydrogen peroxide under sunlight irradiation by focusing on a specific higher alcohol and specifying its content.

  Examples of the higher alcohol having 12 to 22 carbon atoms include linear or branched saturated or unsaturated aliphatic alcohols. Specific examples include lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), and cetostearyl. Alcohol, stearyl alcohol, aralkyl alcohol, behenyl alcohol, isostearyl alcohol, oleyl alcohol, 2-hexyldodecanol, 2-octyldodecanol, decyltetradecanol, linoleyl alcohol, linolenyl alcohol lanolin alcohol and the like can be mentioned. Of these, saturated higher alcohols, specifically, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, aralkyl alcohol, and behenyl alcohol are preferable.

  The second agent contains, as an oil component, hydrocarbons such as petrolatum, microcrystalline wax, liquid paraffin, fats and oils, waxes, higher fatty acids, cetyl octoate, stearyl stearate, and the like in addition to the above higher alcohols. You may do it.

  The upper limit of the content of the oil component in the second agent may be 10% by mass, and the content of the oil component excluding higher alcohols may be 5% by mass or less. The content of the oily component that is liquid at 25 ° C. excluding the higher alcohol in the second agent is preferably 5% by mass or less.

  In addition to the above-described components, the second agent may contain optional components as appropriate. Examples of the optional component include water such as purified water, distilled water, ion-exchanged water, water-soluble polymers, polyhydric alcohols, alkyl glyceryl ethers, solvents, thickeners, amino acids, silicones, saccharides, phenoxyethanol, and hydroxyethane. Hydrogen peroxide stabilizing components such as diphosphonic acid and hydroxyethane diphosphonic acid tetrasodium, chelating components, pH adjusting components, plant or herbal extracts, vitamins including ascorbic acids, fragrances and the like may be blended.

  The second agent has an average emulsified particle size of 1 μm or more. The average emulsified particle diameter is preferably 1 to 100 μm, more preferably 2 to 50 μm, and still more preferably 5 to 20 μm. When the average emulsified particle size of the second agent is less than 1 μm, the stability of hydrogen peroxide under sunlight irradiation becomes insufficient.

  In the present application, the average emulsified particle size is measured using a laser diffraction / scattering particle size distribution measuring device (trade name: Microtrack MT3000II, manufactured by Nikkiso Co., Ltd.), and the median diameter (d50 value) on a volume basis is measured. To do. An apparatus having the same quality as the laser diffraction / scattering particle size distribution measuring apparatus may be used.

  The second agent is preferably creamy. Moreover, it is preferable that a 2nd agent is a cream form and is discharged from the double structure container mentioned later. The viscosity of the creamy second agent may be set to 3000 to 40000 mPa · s from the viewpoint of making the mixing property with the first agent good, making the mixture easy to adjust to the hair, and suppressing the dripping of the mixture well. Furthermore, from the viewpoint of the stability of the emulsified particle diameter, the viscosity of the second agent is preferably 5000 to 35000 mPa · s, more preferably 7000 to 30000 mPa · s.

[Aerosol hair cosmetic composition]
The aerosol hair cosmetic composition disclosed in the present application includes the first agent and the second agent in its configuration. The aerosol hair cosmetic composition disclosed in the present application may be a two-component type or a multi-component type having three or more agents.

  The aerosol hair cosmetic composition may further contain an oxidation aid, a treatment agent, and the like.

  Examples of the aerosol hair cosmetic composition include an oxidative hair dye composition, a hair bleaching composition, and a hair decoloring composition. Preferably, it is used for the treatment of human hair.

  The aerosol hair cosmetic composition can be used by a conventional method. Usually, at the time of use, the first agent and the second agent are discharged from a double structure container to be described later, applied to the hair, and washed and used after the treatment. The timing of mixing the first agent and the second agent can be selected as appropriate, and may be mixed before application to the hair, or may be simultaneously applied and mixed with the hair using a comb, You may apply | coat to hair, after attaching a mixing apparatus to a double structure container and mixing.

  When the aerosol hair cosmetic composition contains an oxidation aid in its composition, the first to third agents are mixed during mixing. When the aerosol hair cosmetic composition includes a treatment agent, the first agent, the second agent and the treatment agent may be mixed at the time of mixing, or the treatment agent may be added after the hair dyeing / decoloring or decoloring treatment. It may be used for treatment treatment.

[Double structure container]
In the double structure container, the first inner container filled with the first agent and the second inner container filled with the second agent, which are provided independently, are housed in the same outer container, The space between each inner container becomes a propellant-filling space filled with a propellant, and the outer container and the second inner container include a light-transmitting material in the configuration, and the second content is formed from the outside of the outer container. The inside of the container can be visually recognized, and includes a mechanism for simultaneously discharging the first agent and the second agent.

  A specific example of the double structure container will be described with reference to FIG.

  The double-structured container 1 includes a first inner container 2 filled with a first agent and a second inner container 3 filled with a second agent, which are provided independently of each other in the same outer container 4 having a substantially cylindrical shape. Contained. A space between the outer container 4 and each of the inner containers 2 and 3 becomes a propellant filling space for filling the propellant.

  The double structure container includes a valve unit 5. The valve unit 5 includes a first communication path that is a passage for the first agent filled in the first inner container 2 and a second communication path that is a passage for the second agent filled in the second inner container 3. ing. In order to secure the communication paths, the first inner container 2 and the second inner container 3 may be provided with, for example, a rod-shaped joint material extending from the mouth portion of the inner container into the container.

  Moreover, the valve unit 5 is provided with the valve stem which can be moved up and down for opening and closing each communicating path about each communicating path.

  A discharger 6 is coupled to the valve unit 5, and each valve stem is opened when the discharger 6 is pushed down. In the discharger 6, a discharge path 7 is provided for discharging the first agent and the second agent that have passed through each valve stem. The discharge path 7 may be configured to discharge the first agent and the second agent separately, or may be configured so that the first agent and the second agent can associate in the discharger 6.

  Therefore, when the discharger 6 is pushed down, the first agent filled in the first inner container 2 and the second agent filled in the second inner container 3 are respectively connected to the communication path, the valve stem, and the discharge path 7. Are discharged at the same time. Normally, the valve stem in the valve unit 5 is biased upward, and when the push-down operation of the discharger is stopped, the valve stem closes and discharge stops.

  The inside of the outer container 4 is always pressurized by the propellant. When the discharger 6 is pushed down, the inner containers 2 and 3 filled with the first agent and the second agent are elastically deformed by pressure, and the filler can be discharged. Moreover, you may utilize the mixing apparatus prepared separately.

  Therefore, as the first inner container 2 and the second inner container 3, a conventionally known container (for example, a pouch or the like) can be used as appropriate.

  The outer container 4 of the double structure container is a pressure resistant container made of a light transmissive material such as PET, polyacrylate, nylon, or polypropylene. Therefore, the inside of the outer container 4 can be visually recognized. The outer container 4 may be colored while leaving a part where the second inner container 3 can be visually recognized, or may be provided with a packaging material so as to leave a part where the second inner container 3 can be seen.

  The second inner container 3 is provided together with the first inner container 2. The second inner container 3 may be formed by bonding together elastically deformable sheets (hereinafter also referred to as light transmissive sheets) made of a light transmissive material such as PET or PE. Also, the side facing the first inner container 2 is made of an elastically deformable sheet containing a light-impermeable material such as aluminum, and the opposite side facing the outer container 4 is made a light-transmitting sheet. In addition, the second inner container 3 may be configured. Moreover, you may color the specific part of a light transmissive sheet | seat, or may modify a specific part to light impermeability.

  When the first agent contains an oxidation dye, it is preferable to use a pouch containing a metal foil as the first inner container 2 from the viewpoint of storage stability of the oxidation dye. In this case, the first inner container 2 becomes light impermeable. Therefore, the remaining amount of the first agent in the first inner container 2 cannot be visually recognized.

  As described above, the double structure container 1 is configured so that the inside of the second inner container 3 can be visually recognized. Therefore, when using aerosol type hair cosmetic products divided into a plurality of times, the remaining amount of the second agent can be easily visually confirmed. Since the first agent and the second agent are placed under the same pressure, the remaining amount of the second agent also serves as a measure of the remaining amount of the first agent.

  Moreover, you may use the double structure container disclosed by the said patent document 2 FIGS. 3-6, and the said patent document 3 FIG. 1, referring the structure of the said double structure container.

[Propellant]
In the dual structure container, the propellant filling space is provided separately from the filling space for the first agent and the filling space for the second agent.

  As a propellant filling the propellant filling space, for example, liquefied gas or compressed gas can be used. From the viewpoint of safety, if the whole or a part of the outer container of the double structure container is made light transmissive, compressed gas is preferable as the propellant from the viewpoint that the propellant filling space can be visually recognized.

  Examples of the liquefied gas include LPG, DME, and isopentane. Examples of the compressed gas include nitrogen gas, carbon dioxide gas, and compressed air.

  In addition, when it is desired to discharge the filling from the double structure container in the form of foam, the inner container may be filled with liquefied gas. On the other hand, when discharging the filling in the form of cream, the inner container is not filled with liquefied gas, or the filling amount of the liquefied gas in the inner container is suppressed to an extremely small amount. When carbonates such as sodium carbonate and potassium carbonate are used as the alkaline agent and / or percarbonates such as sodium percarbonate and potassium percarbonate are used as the oxidizing agent, carbon dioxide is generated, and it is easy to form a foam after discharge. .

[Aerosol hair cosmetics]
The present application discloses an aerosol hair cosmetic product that includes the aerosol hair cosmetic composition and the double-structured container.

  The first agent and the second agent of the aerosol hair cosmetic composition are filled in a double structure container. When the aerosol hair cosmetic composition contains an optional composition (for example, the third drug) in addition to the first and second agents, the optional composition is usually accommodated in a container separate from the double structure container. Is done.

  The aerosol-type hair cosmetic product may include any other appropriate configuration. For example, brushes, combs, mixing cups, gloves, hair caps, and the like may be included in the configuration.

  Hereinafter, examples in the present application will be described. The technical scope of the invention disclosed in the present application is not limited to the following examples. In addition, the numerical value which shows content in a table | surface is a mass% unit.

  The 2nd agent of the aerosol type hair cosmetics composition which concerns on Examples 1-25 shown in following Table 1-Table 5, and Comparative Examples 1-5 was prepared. In addition, although each Example and Comparative Examples 2 and 5 could be prepared as emulsions, Comparative Examples 1, 3 and 4 could not be emulsified and became solubilized products (transparent).

(Measurement of average emulsified particle size)
After the preparation of the second agent according to each Example and Comparative Examples 2 and 5, the average emulsified particle size was measured according to the following “Particle Size Measuring Method”. The measurement results are shown in the “Emulsified particle diameter” column in the table.

  It should be noted that the second agent according to each embodiment is filled in a dual-structure aerosol container in which the second agent filling space and the propellant filling space are provided independently, and then discharged even if discharged. The second agent had an average emulsified particle size similar to that after the above preparation.

<Method for measuring particle size>
Measurement was performed using a laser diffraction / scattering particle size distribution measuring apparatus (trade name: Microtrac MT3000II, manufactured by Nikkiso Co., Ltd.). 10 ml of each second agent (sample) was diluted to 100 ml with water, stirred for 10 minutes at a rotation of 1000 rpm with a magnetic stirrer, injected into the apparatus, measured twice, and the average was determined. The measurement conditions were: measurement temperature: 25 ° C., measurement time: 30 seconds, particle refractive index: 1.81, particle shape: non-spherical, solvent: water, solvent refractive index: 1.33. The volume particle size distribution of the measurement sample was measured, and from the measurement results, the median diameter (d50 value) at which the cumulative volume from the small particle size side in the cumulative volume distribution was 50% was calculated as the average emulsified particle diameter of the particles.

[Stability test of hydrogen peroxide]
The mass of hydrogen peroxide in the second agent was quantified by a redox titration method.

After the preparation of the second agent according to each example and each comparative example, first, the first hydrogen peroxide amount was measured.
Next, the first agent is prepared according to a conventional method, and the first agent and the second agent according to each example and each comparative example are filled in the double structure container shown in FIG. 1 and compressed as a propellant. A product filled with nitrogen (internal pressure 0.5 MPa) was produced. The outer container and the second inner container are transparent and light transmissive.

Next, the irradiation process to the 2nd agent was performed on the following conditions using the artificial solar illumination lamp.
・ Lighting device: Artificial solar lighting SOLAX XC-500AF (made by Celic Corporation)
-Height to the object: irradiation from a height of 80 cm-Temperature: 25 ° C
・ Irradiation schedule: [6 hours irradiation + 24 hours off] x 7 times

  After the repeated irradiation treatment with the artificial solar lighting, a second measurement of the amount of hydrogen peroxide was performed.

Next, the residual rate of hydrogen peroxide was calculated by the following formula.
Calculation formula: hydrogen peroxide remaining rate (%) = [second hydrogen peroxide amount] / [first hydrogen peroxide amount] × 100

  "5" when the residual rate of hydrogen peroxide is 96% to 100%, "4" when it is 95% to less than 96%, "3" when it is 90% to less than 95%, 85% to 90% The test results are listed in the “hydrogen peroxide stability” column of the table, with “2” for less than “1” and “1” for less than 85%.

  In addition, even after the repeated irradiation treatment with the artificial solar illumination lamp, the second agent according to each example had an average emulsion particle size almost the same as that after the preparation.

[Table 1]

[Table 2]

[Table 3]

[Table 4]

[Table 5]

  From the results of the above tests, it was considered that there was a correlation between the average emulsified particle size and the stability of hydrogen peroxide. The second agent according to Comparative Examples 1, 3, and 4 was a solubilized product, and was evaluated as “1” for the stability of hydrogen peroxide, not an emulsion. In Comparative Examples 2 and 5, the average emulsified particle diameter was less than 1 μm, and the stability evaluation of hydrogen peroxide was insufficient.

  On the other hand, the second agent according to each Example had an average emulsified particle size of 1 μm or more, and the stability evaluation of hydrogen peroxide was good. In Examples 1 to 21 containing 1% by mass or more of a higher alcohol having 12 to 22 carbon atoms, the stability evaluation of hydrogen peroxide was further improved. The evaluation was particularly good when the average emulsified particle diameter was 5 to 20 μm.

  In each example, the content of the nonionic surfactant having an HLB value of 12 to 17 was 1% by mass or less, but the stability evaluation of hydrogen peroxide was good.

  Even if the 2nd agent which concerns on each Example was filled in the aerosol container of a double structure, or repeated irradiation treatment with an artificial sunlamp, the average emulsified particle diameter was maintained. Therefore, it was considered that the average emulsified particle diameter of the second agent was maintained while the second agent was filled in the double-structure container in which the remaining amount could be visually recognized.

  By this application, the 2nd agent excellent in the stability of hydrogen peroxide under sunlight irradiation is provided. That is, the 2nd agent suitable for filling to the double structure container which can visually recognize the residual amount is provided. In addition, an aerosol hair cosmetic composition and an aerosol hair cosmetic product comprising the second agent are provided.

Double structure container 1
First inner container 2
Second inner container 3
Outer container 4
Valve unit 5
Dispenser 6
Discharge path 7

Claims (3)

A second agent of an aerosol hair cosmetic composition comprising a first agent containing an alkaline agent and a second agent which is an emulsion containing hydrogen peroxide,
In the second agent, the first inner container filled with the first agent and the second inner container filled with the second agent, which are provided independently, are housed in the same outer container, The space between each inner container becomes a propellant-filling space filled with a propellant, and the outer container and the second inner container include a light-transmitting material in the configuration, and the second content is formed from the outside of the outer container. The inside of the container is visible, and is used by filling a double-structured container equipped with a mechanism for simultaneously discharging the first agent and the second agent,
A second agent having an average emulsified particle size of 2 to 18.2 μm. The second agent according to claim 1, wherein the average emulsified particle diameter is 3.3 to 18.2 μm. The 2nd agent of Claim 1 or Claim 2 which contains 1-5 mass% of C12-C22 higher alcohol.