JP6652868B2 - Aerosol hair dye kit - Google Patents

Description

  The present invention relates to an aerosol-type hair dye kit.

  An oxidative hair dye comprising a first agent composition containing an alkali agent and an oxidation dye and a second agent composition containing an oxidizer is in the form of foam, cream, gel, paste, etc. Once discharged onto a tray and mixed using a spatula or a brush, it is applied to the hair using a hand or an applicator. In such a two-part type oxidative hair dye, it is important to ensure the mixing property between the first part composition and the second part composition and the operability during treatment. For this reason, in the design of the oxidative hair dye, an improvement in mixability and operability and a reduction in pungent odor have been achieved by techniques such as appropriate viscosity adjustment of the composition (for example, see Patent Document 1).

  As means for improving the mixing property and operability of the first agent composition and the second agent composition by an applicator used for the treatment, a brush stand on which the brush teeth are erected, a first aerosol container is used. Various brushes have been developed which allow the mixture to be applied to the hair while mixing the two agents while combing the hair with the agent composition and the second agent composition being discharged and placed (for example, See Patent Document 2).

JP 2004-189638 A JP 2005-97310 A

  The first and second aerosol hair dye compositions have relatively low viscosities so that they can be discharged from the aerosol container, but have viscosities that do not drip on the brush stand. At the same time, a brush for applying the hair dye composition to hair is required to have a structure capable of preventing dripping of the brush. However, with the configuration described in Patent Document 2, it is difficult to transfer the first and second hair dyes on the brush stand to the head hair, and it is difficult to apply the first and second hair dyes to the root of gray hair as intended. Problem had arisen.

  In addition, aerosol products have a problem that the amount of content discharged from the aerosol container per hour gradually decreases regardless of whether the product is used continuously or intermittently. In order to achieve this, studies have been made on the structure of the container itself and the orifice portion to be discharged, and on the adjustment of the viscosity of the contents, but no sufficient study has been made for hair dyeing applications.

  Further, when an aerosol container for discharging the first agent composition and an aerosol container for discharging the second agent composition are connected to use a container that simultaneously discharges by the same operation, the degree of decrease in the amount of each aerosol is reduced. Because it is unique to the container, even if it is discharged at a predetermined volume ratio when used for the first time after manufacture, if the volume is reduced to approximately half or less by continuing to discharge or repeating use, the discharge volume ratio will increase significantly In some cases, making it difficult to place an appropriate amount on the brush, and sometimes leading to a decrease in hair dyeability.

  The present invention can discharge the first agent composition and the second agent composition from the aerosol container at a predetermined ratio, and place it on a brush for easy mixing while aiming at a worrisome base of gray hair. The present invention relates to an aerosol hair dye kit comprising a two-part aerosol-type hair dye composition and a brush for a hair treatment agent contained in an aerosol container and capable of applying a hair dye in a manner as described above.

  The present inventors are concerned about a hair dye composition by combining a first composition and a second composition for aerosol hair dyeing of a specific composition with a brush for a hair treatment agent having a specific structure. While applying the mixture to the root gray hair properly and pressing the mixture in, the hair can be easily spread from the root toward the hair tip and over a wide range of the root, and as a result, the root gray hair can be suitably dyed. We have found and completed the present invention.

The present invention is an aerosol-type hair dyeing kit comprising a first agent composition for aerosol hair dyeing, a second agent composition for aerosol hair dyeing, and a brush for a hair treatment agent,
The first agent composition for aerosol hair dye contains the following components (1A) to (1F),
(1A) Cationic surfactant
(1B) Nonionic surfactant
(1C) Higher alcohol
(1D) Oils that are liquid at 25 ° C
(1E) Oxidation dye intermediate
(1F) Alkali agent The second agent composition for aerosol hair dye contains the following components (2A) to (2D),
(2A) Hydrogen peroxide
(2B) Nonionic surfactant
(2C) Higher alcohol
(2D) Hydrocarbon hair treatment agent brushes are provided along side edges on both sides in the width direction of the brush stand, and a plurality of the brushes are arranged at predetermined intervals in the length direction of the brush stand. An outer brush tooth row composed of outer brush teeth, and a plurality of inner brush teeth provided adjacent to the inner side of the outer brush teeth in the width direction and arranged at predetermined intervals in the length direction. Inner brush teeth row, wherein the tensile elastic modulus of the inner brush teeth is lower than the tensile elastic modulus of the outer brush teeth.
An aerosol-type hair dye kit is provided.

  The aerosol-type hair dyeing kit of the present invention can apply the hair dye as intended to the worrisome base of white hair while easily mixing the first and second agent compositions. Hair color can be suitably dyed.

It is a perspective view of the hair treatment tool provided with the brush for hair treatment agents concerning one preferred embodiment of the present invention. It is a side view of the hair treatment tool provided with the brush for hair treatment agents concerning one preferred embodiment of the present invention. It is a top view of the brush part of the hair treatment tool explaining the structure of the brush for hair treatment agents which concerns on one preferable embodiment of this invention. FIG. 3 is an enlarged cross-sectional view along AA of FIG. 2 for illustrating a configuration of a hair treatment agent brush according to a preferred embodiment of the present invention. It is a top view of the brush part of the hair treatment tool explaining the state which placed the 1st agent and the 2nd agent on the upper surface of the brush stand side by side. It is explanatory drawing of the state in which the inner brush tooth and the intermediate | middle part brush tooth | bending were bending and pushing the hair dye composition between hairs. FIG. 7 is an explanatory view showing a state in which the inner brush teeth are deformed until the tip protrudes outward of the outer brush teeth row, and the divided hair is sandwiched between the side faces of the outer brush teeth and the inner brush teeth. is there.

● First part composition for aerosol hair dyeing The first part composition for aerosol hair dyeing (hereinafter referred to as “first part composition”) used in the present invention contains the following components (1A) to (1F).
(1A) Cationic surfactant
(1B) Nonionic surfactant
(1C) Higher alcohol
(1D) Oils that are liquid at room temperature
(1E) Oxidation dye intermediate
(1F) Alkaline agent

[Component (1A): cationic surfactant]
Examples of the cationic surfactant of the component (1A) include (i) an alkyltrimethylammonium salt, (ii) an alkoxyalkyltrimethylammonium salt, and (iii) a dialkyldimethylammonium salt.

(I) Alkyl trimethyl ammonium salt Examples of the alkyl trimethyl ammonium salt include those represented by the following general formula (1).
_{^{R 1 -N + (CH 3)}} 3 X - (1)
[In the formula, R ¹ represents an alkyl group having 12 to 22 carbon atoms, and X ⁻ represents a halide ion such as a chloride ion or a bromide ion; a methosulfate ion, a methocarbonate ion, or the like. ]

  Specific examples include cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, behenyltrimethylammonium methosulfate and the like.

(Ii) Alkoxyalkyltrimethylammonium salt Examples of the alkoxyalkyltrimethylammonium salt include those represented by the following general formula (2).
^{R 2 -O-R 3 -N +} (CH 3) 3 X - (2)
[Wherein, R ² represents an alkyl group having 12 to 22 carbon atoms, R ³ represents an ethylene group or a propylene group which may be substituted by a hydroxy group, and X ⁻ represents a chloride ion, a bromide ion, or the like. Halide ion; methosulfate ion, methcarbonate ion and the like. ]

  Specifically, stearooxypropyltrimethylammonium chloride, stearoxyethyltrimethylammonium chloride, stearoxyhydroxypropyltrimethylammonium chloride and the like can be mentioned.

(Iii) Dialkyldimethylammonium salt Examples of the dialkyldimethylammonium salt include those represented by the following general formula (3).
_{^{(R 4) 2 N + (}} CH 3) 2 X - (3)
Wherein R ⁴ independently represents an alkyl group having 12 to 22 carbon atoms or a benzyl group; X ⁻ represents a halide ion such as a chloride ion or a bromide ion; a methosulfate ion, a methocarbonate ion, or the like. Is shown. ]

  Specific examples include dilauryl dimethyl ammonium chloride, distearyl dimethyl ammonium chloride and the like.

  Among them, (i) an alkyltrimethylammonium salt and (iii) a dialkyldimethylammonium salt are preferred.

  These cationic surfactants can be used alone or in combination of two or more. The content of the component (1A) in the first agent composition is preferably 0.3% by mass or more, more preferably 0.5% by mass or more, from the viewpoint of ensuring stability that separation is not performed even after filling in the aerosol container. Also, it is preferably at most 3% by mass, more preferably at most 2% by mass.

[Component (1B): Nonionic surfactant]
Examples of the nonionic surfactant of the component (1B) include polyoxyalkylene alkyl or alkenyl ether, alkyl alkanolamide, alkyl polyglucoside, and alkyl glyceryl ether.

  Examples of the polyoxyalkylene alkyl or alkenyl ether include polyoxyethylene alkyl or alkenyl ether, polyoxypropylene alkyl or alkenyl ether, polyoxyethylene polyoxypropylene alkyl or alkenyl ether, and the like, preferably having the following general formula (4) Can be used.

R ⁵ -O-[(CH ₂ ) _x -O] _n -H (4)
[In the formula, R ⁵ represents a linear or branched alkyl or alkenyl group having 8 to 22 carbon atoms, x represents a number of 2 or 3, and n represents a number of 1 to 100 on average. ]

In the general formula (4), the number of carbon atoms of R ⁵ is preferably 10 or more, more preferably 12 or more, and preferably 20 or less, from the viewpoint of blending stability in which no precipitate is generated during storage. It is more preferably 18 or less. Further, n is preferably 2 or more, more preferably 4 or more, and is preferably 80 or less, more preferably 60 or less, and further preferably 45 or less. When the component represented by the general formula (4) is used as the component (1B), one type may be used alone, or two or more types having different n may be used in combination.

  Specific examples of polyoxyalkylene alkyl or alkenyl ether include polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxypropylene lauryl ether, polyoxypropylene cetyl ether, polyoxyethylene cetyl ether, Oxypropylene stearyl ether, polyoxyethylene polyoxypropylene lauryl ether, polyoxyethylene polyoxypropylene cetyl ether, polyoxyethylene polyoxypropylene stearyl ether and the like can be mentioned.

  As the alkylalkanolamide, those represented by the following general formula (5) can be used.

[In the formula, R ⁶ represents a linear or branched alkyl group having 5 to 23 carbon atoms, and R ⁷ and R ⁸ each independently represent a hydrogen atom or an alkanol group having 1 to 4 carbon atoms. However, the case where R ⁷ and R ⁸ are a hydrogen atom at the same time is excluded. ]

The carbon number of R ⁶ is preferably 8 or more, more preferably 10 or more, still more preferably 12 or more, and preferably 22 or less, from the viewpoint of blending stability such that no precipitate is generated during storage. Preferably it is 20 or less, more preferably 18 or less.

  Specific examples of alkyl alkanolamides include coconut oil fatty acid monoethanolamide, coconut oil fatty acid diethanolamide, lauric acid isopropanolamide, oleic acid diethanolamide, and the like.

  As the alkylpolyglucoside, those having an alkyl group having 6 to 22 carbon atoms and a degree of condensation of glucoside units of 1 to 7 are preferable. Specific examples include octyl polyglucoside, 2-ethylhexyl polyglucoside, decyl polyglucoside, lauryl polyglucoside, myristyl polyglucoside, palmityl polyglucoside, isostearyl polyglucoside, stearyl lauryl polyglucoside, oleyl polyglucoside, behenyl polyglucoside, and the like. Is mentioned. Among them, those having an alkyl group having 8 to 18 carbon atoms and a degree of condensation of glucoside units of 1 to 7 are more preferable.

  Examples of the alkyl glyceryl ether include those having an alkyl group of preferably 8 or more, more preferably 14 or more, preferably 30 or less, more preferably 20 or less, and those having a branched chain alkyl group. Is preferred. Specific examples include 2-ethylhexyl glyceryl ether, isostearyl glyceryl ether, isostearyl pentaerythryl glyceryl ether, and the like.

  Among these nonionic surfactants, polyoxyalkylene alkyl ethers, especially polyoxyethylene alkyl ethers, are preferred from the viewpoint of the stability of the emulsified state of the hair dye and the solubility of the dye contained in the hair dye. .

  The nonionic surfactant of the component (1B) can be used alone or in combination of two or more. The content of the component (1B) in the first agent composition is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, from the viewpoint of formulation stability such that a precipitate is not generated during storage. , Preferably 5% by mass or less, more preferably 3% by mass or less.

[Component (1C): Higher alcohol]
As the higher alcohol of the component (1C), those represented by the following general formula (6) can be used.

R ⁹ -OH (6)
[In the formula, R ⁹ represents a linear or branched alkyl or alkenyl group having 12 to 24 carbon atoms. ]

  As the component (1C), lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, aralkyl alcohol, behenyl alcohol, oleyl alcohol and the like can be mentioned. Component (1C) can be used alone or in combination of two or more.

From the viewpoint of improving the stability of the emulsified state of the first agent in the aerosol container and suppressing the thickening over time, the component (1C) is represented by the formula (6) in which R ⁹ is (1C ₁₎ less than 12 less than 20 carbon atoms, further to that is a linear alkyl group of less than 20 14 or more carbon atoms, (1C ₂₎ having 20 or more 24 or less carbon atoms, more linear alkyl having 20 to 22 carbon atoms It is preferred that they are a combination with a group that is a group. From the same viewpoint, the weight ratio of component (1C ₂₎ and component _{(1C 1) (1C 2)} / (1C 1) is preferably 0.20 or more, more preferably 0.22 or more, more preferably 0.24 or more And preferably 0.75 or less, more preferably 0.73 or less, and even more preferably 0.71 or less.

  The content of the component (1C) in the first agent composition is preferably 0.1% by mass or more, from the viewpoint of suppressing the time-dependent thickening of the first agent composition and keeping the ejection amount from the aerosol container constant. The content is more preferably 0.5% by mass or more, further preferably 1.0% by mass or more, and preferably 10% by mass or less, more preferably 8% by mass or less, and still more preferably 6% by mass or less.

[Component (1D): oil agent that is liquid at 25 ° C]
The liquid agent at 25 ° C. of the component (1D) is an oil agent having fluidity at 25 ° C. Specifically, a kinematic viscosity at 25 ° C. is preferably an oil agent having a kinematic viscosity of 1000 mm ² / s or less, and 500 mm ² / s. s or less, more preferably 100 mm ² / s or less.

  The kinematic viscosity at 25 ° C is determined by using a capillary viscometer to measure the time required for a fixed volume of liquid to flow through the capillary of the viscometer at 25 ° C and 1 atm. It is calculated using As the capillary viscometer, Ubbelohde or Cannon-Fenske type is used.

Kinematic viscosity (mm ² / s) = Outflow time (second) x Viscometer constant

  The component (1D) is not limited as long as it is used in ordinary cosmetics, and includes, for example, hydrocarbon oils, silicone oils, ester oils, fluorine oils, animal and vegetable oils, among which hydrocarbon oils , Silicone oil is preferred.

  Examples of the hydrocarbon oil include liquid paraffin, liquid isoparaffin, light isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin, and squalane. Among these, liquid paraffin is preferred. Component (1D) can be used alone or in combination of two or more.

  Examples of the silicone oil include the following.

(1) Dimethylpolysiloxane Examples thereof include those represented by the following general formula (7).
(CH ₃ ) ₃ SiO-[(CH ₃ ) ₂ SiO] _r -Si (CH ₃ ) ₃ (7)
[In the formula, r represents a number of 3 or more and 20,000 or less. ]

(2) Amino-modified silicone Although various amino-modified silicones can be used, the average molecular weight is about 3000 or more and 100,000 or less and is referred to as Amodimethicone in ICID (US, International Cosmetic Ingredient Dictionary and Handbook) 15th edition. Those described are preferred. This amino-modified silicone is preferably used as an aqueous emulsion, and commercially available products include SM 8904, CB-1002 (Dow Corning Toray), XF42-B8922 (Momentive Performance Materials) and the like. .

(3) Other silicone oils In addition to the above, polyether-modified silicone, methylphenylpolysiloxane, fatty acid-modified silicone, alcohol-modified silicone, alkoxy-modified silicone, epoxy-modified silicone, fluorine-modified silicone, cyclic silicone, alkyl-modified silicone, etc. Can be

  Examples of ester oils include fatty acid esters such as isopropyl palmitate, polyhydric alcohol fatty acid esters such as neopentyl glycol dicaprate and pentaerythritol tetra-2-ethylhexanoate, and alkyl carboxylate esters such as alkyl benzoate. Examples of the fluorine oil include fluoropolyether and perfluoroalkyl ether silicone, and examples of the animal and vegetable oil include jojoba oil, olive oil, and liquid lanolin.

  The content of the component (1D) in the first agent composition is preferably 0.1% by mass or more, from the viewpoint of suppressing the time-dependent thickening of the first agent composition and keeping the discharge amount from the aerosol container constant. It is more preferably at least 0.3% by mass, still more preferably at least 0.5% by mass, and preferably at most 20% by mass, more preferably at most 17% by mass, still more preferably at most 13% by mass.

[Mass ratio (1D) / (1C)]
The mass ratio (1D) / (1C) of the component (1D) to the component (1C) in the first agent composition suppresses the time-dependent thickening of the first agent composition and keeps the discharge amount from the aerosol container constant. From the viewpoint of keeping at, preferably 0.16 or more, more preferably 0.20 or more, more preferably 0.25 or more, further preferably 0.30 or more, more preferably 0.31 or more, more preferably 0.40 or more, more preferably 0.50 or more, It is preferably 2.20 or less, more preferably 2.00 or less, further preferably 1.90 or less, further preferably 1.84 or less, further preferably 1.70 or less, and still more preferably 1.50 or less.

[Component (1E): oxidation dye intermediate]
The first agent composition contains an oxidation dye intermediate as the component (1E). As the oxidation dye intermediate, known precursors and couplers commonly used in hair dyes can be used.

  As the precursor, for example, paraphenylenediamine, toluene-2,5-diamine, orthochloroparaphenylenediamine, N-phenylparaphenylenediamine, N, N-bis (hydroxyethyl) paraphenylenediamine, 3-methyl-4-amino Phenol, 2-hydroxyethylparaphenylenediamine, paraaminophenol, paramethylaminophenol, 4-amino-metacresol, orthoaminophenol, 2,2 '-[(4-aminophenyl) imino] bisethanol and salts thereof Is mentioned.

  Further, as the coupler, for example, resorcinol, 2-methylresorcinol, 1-naphthol, 1,5-dihydroxynaphthalene, 5-amino orthocresol, metaphenylenediamine, orthoaminophenol, metaaminophenol, paraaminophenol, 2,4- Examples thereof include diaminophenoxyethanol, 2,6-diaminopyridine, 2-methyl-5-hydroxyethylaminophenol, 2-amino-3-hydroxypyridine, and salts thereof.

  The precursor and the coupler can be used alone or in combination of two or more, respectively. The content of each of the precursor and the coupler in the first agent composition is preferably 0.01% by mass or more, more preferably 0.02% by mass or more. And preferably 5% by mass or less, more preferably 4% by mass or less.

(Direct dye)
The first agent composition may further contain a direct dye. Examples of the direct dye include an acid dye, a nitro dye, a disperse dye, and a basic dye. More specifically, as the acidic dye, blue No. 1, purple 401, black 401, orange 205, red 227, red 106, yellow 203, yellow 202 (1), acidic orange 3 and the like. Nitro dyes include 2-nitro-p-phenylenediamine, 2-amino-6-chloro-4-nitrophenol, 3-nitro-p-hydroxyethylaminophenol, 4-nitro-o-phenylenediamine, 4-amino -3-nitrophenol, 4-hydroxypropylamino-3-nitrophenol, HC blue 2, HC orange 1, HC red 1, HC yellow 2, HC yellow 4, HC yellow 5, HC red 3, N, N-bis (2-hydroxyethyl) -2-nitro-p-phenylenediamine and the like. Examples of the disperse dye include Dispersion Purple 1, Dispersion Blue 1, Dispersion Black 9, and the like. Examples of the basic dye include basic blue 99, basic tea 16, basic tea 17, basic red 76, basic yellow 76, basic orange 31, basic red 51 and the like.

  Direct dyes can be used alone or in combination of two or more. The content of the direct dye in the first agent composition is preferably 0.001% by mass or more, more preferably 0.01% by mass or more from the viewpoint of expanding the dyeing region, and also prevents aggregation and precipitation in the composition. From the viewpoint, it is preferably 5% by mass or less, more preferably 3% by mass or less.

[Component (1F): alkaline agent]
The first agent composition contains an alkali agent. Examples of the alkaline agent include ammonia and salts thereof (eg, ammonium bicarbonate); alkanolamines such as monoethanolamine, isopropanolamine, 2-amino-2-methylpropanol and 2-aminobutanol and salts thereof; 1,3-propanediamine Alkanediamines and salts thereof; and carbonates such as guanidine carbonate, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate and the like. These alkaline agents can be used alone or in combination of two or more.

  The content of the alkaline agent in the first agent composition is preferably 1.5% by mass or more, more preferably 2.0% by mass or more from the viewpoint of a sufficient hair dyeing effect, and also reduces hair damage and scalp irritation. From the viewpoint, it is preferably at most 8% by mass, more preferably at most 6% by mass.

(Medium)
In the first agent composition, water and, if necessary, an organic solvent are used as a medium. As the organic solvent, ethanol, lower alkanols such as 2-propanol, benzyl alcohol, aromatic alcohols such as benzyloxyethanol, propylene glycol, 1,3-butanediol, diethylene glycol, polyols such as glycerin, ethyl cellosolve, Cellosolves such as butyl cellosolve and benzyl cellosolve; and carbitols such as ethyl carbitol and butyl carbitol.

(PH)
The pH (25 ° C.) of the first agent composition is preferably 8 or more, more preferably 9 or more, and is preferably 13 or less, more preferably 12 or less. Examples of the pH adjuster include, in addition to the above alkaline agents, inorganic acids such as hydrochloric acid and phosphoric acid; organic acids such as citric acid, glycolic acid and lactic acid; monopotassium dihydrogen phosphate, disodium monohydrogen phosphate, citric acid An inorganic acid salt such as sodium or an organic acid salt is exemplified.

(Other optional components)
In addition to the above components, other components that are commonly used as cosmetic raw materials can be added to the first agent composition. Such optional ingredients include animal and vegetable oils and fats, higher fatty acids, non-cationic natural, semi-synthetic or synthetic polymers, amino acids, preservatives, chelating agents, stabilizers, antioxidants, plant extracts, crude drugs Extracts, vitamins, fragrances, UV absorbers.

-Second part composition for aerosol hair dyeing The second part composition for aerosol hair dyeing (hereinafter referred to as "second part composition") used in the present invention contains the following components (2A) to (2D).
(2A) Hydrogen peroxide
(2B) Nonionic surfactant
(2C) Higher alcohol
(2D) Hydrocarbon

[Component (2A): hydrogen peroxide]
The second agent composition contains hydrogen peroxide as the component (2A). The content of hydrogen peroxide in the second agent composition is preferably 1% by mass or more, more preferably 3% by mass or more, from the viewpoint of speeding up the oxidation reaction of the oxidation dye intermediate. From the viewpoint of suppressing the oxidation of, the content is preferably 9% by mass or less, more preferably 6% by mass or less.

[Component (2B): Nonionic surfactant]
The second agent composition contains a nonionic surfactant as the component (2B). Component (2B) includes polyoxyalkylene alkyl or alkenyl ether, alkyl alkanolamide, polyoxyalkylene alkylamine, alkyl polyglucoside, alkyl glyceryl ether and the like. Among them, polyoxyalkylene alkyl or alkenyl ether is preferable, and polyoxyethylene alkyl or alkenyl ether is more preferable.

  As the polyoxyethylene alkyl or alkenyl ether, those represented by the following general formula (8) can be used.

R ¹⁰ -O- (CH ₂ CH ₂ -O) _m -H (8)
[In the formula, R ¹⁰ represents a linear or branched saturated or unsaturated alkyl or alkenyl group having 8 to 22 carbon atoms, and m represents a number of 1 to 100 on average. ]

In the general formula (8), the carbon number of R ¹⁰ is 8 or more, preferably 10 or more, more preferably 12 or more, from the viewpoint of the solubility of the dye contained in the hair dye. It is 22 or less, preferably 20 or less, more preferably 18 or less. Component (2B) can be used alone or in combination of two or more.

In the component (2B), from the viewpoint of the stability of the second agent composition, m in the general formula (8) is (2B ₁ ) 1 or more and less than 30, and (2B ₂ ) 30 or more and 100 or less. It is preferably a combination of (2B ₁ ) 1 or more and 20 or less, and more preferably a combination of (2B ₂ ) 35 or more and 60 or less, and (2B ₁ ) 1 It is further preferable that the combination is a combination of not less than 10 and not more than (2B ₂ ) 35 and not more than 45. The mass ratio of the component (2B ₁ ) to the component (2B ₂ ) [(2B ₁ ) / (2B ₂ )] is preferably 0.05 or more, more preferably 0.11 or more, from the viewpoint of the stability of the second agent composition. , More preferably 0.18 or more, further preferably 0.25 or more, and preferably 4.00 or less, more preferably 1.50 or less, still more preferably 1.00 or less, and still more preferably 0.67 or less.

  The content of the component (2B) in the second agent composition is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and still more preferably 2% by mass, from the viewpoint of keeping the viscosity of the second agent composition constant. %, More preferably 5% by mass or more, preferably 15% by mass or less, more preferably 12% by mass or less, still more preferably 10% by mass or less, and still more preferably 9% by mass or less.

[Component (2C): higher alcohol]
The second agent composition contains a higher alcohol as the component (2C). As the component (2C), those represented by the following general formula (9) can be used.

R ¹¹ -OH (9)
[In the formula, R ¹¹ represents a linear or branched alkyl or alkenyl group having 12 to 24 carbon atoms. ]

  As the component (2C), lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, aralkyl alcohol, behenyl alcohol, carnavir alcohol, oleyl alcohol and the like can be mentioned. Component (2C) can be used alone or in combination of two or more.

Component (2C) is a compound in which R ¹¹ in the general formula (9) is (2C ₁ ) a linear alkyl group having 12 to 18 carbon atoms from the viewpoint of keeping the viscosity of the second agent composition constant. And a combination of (2C ₂ ) a linear alkyl group having 20 to 24 carbon atoms, preferably (2C ₁ ) a linear alkyl group having 14 to 18 carbon atoms. And (2C ₂ ) more preferably a combination with a linear alkyl group having 20 to 22 carbon atoms. The mass ratio of the component (2C ₁ ) to the component (2C ₂ ) [(2C ₁ ) / (2C ₂ )] is preferably 0.05 or more, more preferably from the viewpoint of keeping the viscosity of the second agent composition constant. It is 0.11 or more, further preferably 0.17 or more, further preferably 0.25 or more, and preferably 19.00 or less, more preferably 9.00 or less, further preferably 5.67 or less, and further preferably 4.00 or less.

  The content of the component (2C) in the second agent composition is preferably 0.5% by mass or more, more preferably 0.8% by mass or more, and still more preferably 1.0% by mass, from the viewpoint of keeping the viscosity of the second agent composition constant. % Or more, more preferably 2% by mass or more, still more preferably 3% by mass or more, preferably 30% by mass or less, more preferably 25% by mass or less, still more preferably 20% by mass or less, and still more preferably 15% by mass or less. % By mass, more preferably 10% by mass or less, further preferably 8% by mass or less.

[Component (2D): hydrocarbon]
The second agent composition contains a hydrocarbon as the component (2D). As the hydrocarbon of the component (2D) used in the present invention, those which are liquid at 25 ° C. are preferable, and examples thereof include liquid paraffin, liquid isoparaffin, light isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin, and squalane. Can be Among these, liquid paraffin is preferred. Component (2D) can be used alone or in combination of two or more.

  The content of the component (2D) in the second agent composition is preferably 3% by mass or more, more preferably 5% by mass or more, from the viewpoint of improving the brightness after hair dyeing or bleaching. Is 30% by mass or less, more preferably 25% by mass or less, further preferably 20% by mass or less, further preferably 15% by mass or less, and further preferably 12% by mass or less.

  The total mass ratio of the components (2C) and (2D) to the component (2B) in the second agent composition [(2C) + (2D)] / (2B) is determined by the viscosity of the second agent composition. From the viewpoint of keeping the temperature constant, it is preferably 1.0 or more, more preferably 1.2 or more, still more preferably 1.5 or more, and preferably 3.5 or less, more preferably 3.3 or less, and still more preferably 3.2 or less.

  Further, the mass ratio (2D) / (2C) of the component (2D) to the component (2C) in the second agent composition is preferably 1.2 or more, from the viewpoint of keeping the viscosity of the second agent composition constant. It is preferably at least 1.3, more preferably at most 2.2, more preferably at most 2.1.

[Component (2E): cationic surfactant]
The second agent composition may contain a cationic surfactant as the component (2E). As the cationic surfactant of the component (2E), monoalkyltrimethylammonium chloride and monoalkyltrimethylammonium bromide are preferable, and among them, stearyltrimethylammonium chloride (stealtrimonium chloride), cetyltrimethylammonium chloride (cetrimonium chloride), Lauryltrimethylammonium chloride (lauryltrimonium chloride) can be used. Component (2E) can be used alone or in combination of two or more.

  The content of the component (2E) in the second agent composition is preferably 0.001% by mass or less, more preferably 0.0005% by mass or less, from the viewpoint of preventing corrosion of the metal container. It is preferred that they are not substantially contained. The term "substantially not contained" means not contained unless it is unavoidably contained from components (2A) to (2D) and other components.

[Component (2F): hydroxyethanediphosphonic acid]
The second agent composition may contain hydroxyethanediphosphonic acid as component (2F). The content of the component (2F) in the second agent composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, further preferably 0.1% by mass or more, from the viewpoint of stabilizing hydrogen peroxide. It is preferably at least 0.3% by mass, more preferably at most 2.0% by mass, more preferably at most 1.5% by mass, even more preferably at most 1.0% by mass.

(PH)
The pH (25 ° C.) of the second agent composition is preferably 2.0 or more, more preferably 2.5 or more, and is preferably 6 or less, more preferably 4 or less, from the viewpoint of suppressing the decomposition of hydrogen peroxide. . Examples of the pH adjuster include inorganic acids such as hydrochloric acid and phosphoric acid; organic acids such as citric acid, glycolic acid and lactic acid; and phosphates such as monopotassium dihydrogen phosphate and disodium monohydrogen phosphate.

〔viscosity〕
The viscosity at 30 ° C. before filling the second agent composition into the aerosol container (hereinafter referred to as “viscosity 1”) is preferably 5,000 mPa · s or more, more preferably 10,000 mPa · s, from the viewpoint of the stability of the formulation. s or more, more preferably 15,000 mPas or more, still more preferably 20,000 mPas or more, further preferably 25,000 mPas or more, and preferably 100,000 mPas or less, more preferably 90,000 mPas or less, More preferably, it is 80,000 mPa · s or less, more preferably 70,000 mPa · s or less.

  One month after filling the second agent composition into the aerosol container, the viscosity at 30 ° C. immediately after the second agent composition is discharged from the aerosol container (hereinafter referred to as “viscosity 2”) is the stability of the formulation. From the viewpoint, preferably 5,000 mPas or more, more preferably 10,000 mPas or more, still more preferably 15,000 mPas or more, further preferably 20,000 mPas or more, further preferably 25,000 mPas or more, and Preferably it is 100,000 mPa · s or less, more preferably 90,000 mPa · s or less, further preferably 80,000 mPa · s or less, further preferably 70,000 mPa · s or less.

  The ratio of the viscosity 2 to the viscosity 1 (viscosity 2 / viscosity 1) is preferably 0.80 or more, more preferably 0.85 or more, further preferably 0.90 or more, further preferably 0.93 or more, from the viewpoint of the stability of the formulation. , Preferably 1.25 or less, more preferably 1.2 or less, still more preferably 1.15 or less, and still more preferably 1.13 or less.

  The viscosity (30 ° C.) of the second agent composition is a value obtained by using a B-type viscometer with a helical stand and rotating it at 10 rpm for 1 minute using a T-C rotor.

[Volume average diameter of emulsified particles in the second agent composition]
The volume average diameter of the emulsified particles before filling the second agent composition into the aerosol container is preferably 0.05 μm or more, more preferably 0.10 μm or more, and still more preferably 23 μm or less, from the viewpoint of keeping the viscosity constant. Is 20 μm or less, more preferably 15 μm or less, further preferably 12 μm or less, and still more preferably 10 μm or less.

  By setting the viscosity in the above range, the viscosity of the second agent composition discharged from the second container can be kept constant in any temperature zone.

  Here, the volume average diameter of the emulsified particles in the second agent composition was determined using a dynamic light scattering particle size distribution analyzer manufactured by HORIBA, and the sample was set as “Organic sample” (refractive index: 1.600-0.000i). The setting of the dispersion medium is a value obtained by selecting “Water” (refractive index: 1.333) and measuring the volume distribution of the average diameter of the emulsified particles.

● Form of aerosol container In the embodiment of the present invention, the aerosol container that can be used for the two-part aerosol-type hair dye composition includes (1) an inner bag containing the first part composition and a second composition. Aerosol container (for example, containers described in FIGS. 2 and 4 of JP-A-2015-229666) in which an inner bag enclosing the container is housed in independent aerosol containers, or (2) the first agent A double aerosol container in which each of the inner bag containing the composition and the inner bag containing the second composition is contained in one aerosol container (for example, as shown in FIG. 3 of JP-A-2015-229666). Container).

  As the inner bag, those having elasticity are preferable, and those made of synthetic resin such as high-density or low-density polyethylene, saponified ethylene / vinyl acetate copolymer, polyethylene terephthalate, polypropylene, polyacrylonitrile, and those obtained by laminating these And those having low jet gas permeability are preferred. Further, the inner surface of the inner bag can be used after being coated with a chemical resistant resin.

  As the compressed gas used in the present invention, dimethyl ether, liquefied petroleum gas, nitrogen gas, chlorofluorocarbon alternative, and the like can be used without particular limitation as long as they are generally used for aerosol products. Among them, nitrogen gas is preferable from the viewpoint of preventing deterioration.

  The double or double aerosol container usually has a structure in which the first agent composition and the second agent composition are simultaneously discharged by one operation. At that time, the difference in the ejection amount of the first agent composition and the second agent composition may affect the hair dyeing property, but the first agent composition and the second agent composition in the present invention may be used. It has been found that when used, the discharge ratio of the first agent composition and the second agent composition is kept within a specific range regardless of the remaining amount of the contents. Therefore, as an embodiment of the present invention, the first agent composition and the second agent composition may be used by filling them in a container of a type that discharges them separately. However, an aerosol container of a type that can simultaneously discharge each composition may be used. It is preferable to use it by filling it from the viewpoint that the benefits can be fully enjoyed.

Hair treatment agent brush The hair treatment agent brush used in the present invention is provided along each side edge on both sides in the width direction of the brush stand, and is disposed at a predetermined interval in the length direction of the brush stand. An outer brush tooth row composed of a plurality of outer brush teeth, and a plurality of outer brush teeth provided adjacent to the inner side of the outer brush teeth in the width direction and arranged at predetermined intervals in the length direction. An inner brush tooth row composed of inner brush teeth, wherein a tensile elastic modulus of the inner brush teeth is lower than a tensile elastic modulus of the outer brush teeth.

(Hair treatment tools)
The hair treating agent brush 10 according to a preferred embodiment of the present invention, as shown in FIGS. 1 and 2, is used for scraping hair, treating while combing hair, and treating fine parts of hair. It is used as a part constituting the brush part 22 of the hair treatment tool 20 having the comb part 21, the brush part 22, and the mini-brush part 23, each of which has a function suitable for each. In the present embodiment, the hair treatment tool 20 includes a handle portion 24, a mounting substrate portion 25 integrally provided at a tip portion of the handle portion 24, and a comb portion 21 and a brush provided to be supported by the mounting substrate portion 25. And a mini-brush part 23. 1 and 2, the brush portion 22 is provided integrally on the upper side of the mounting base 25, and the comb portion 21 is provided integrally on the lower side of the mounting base 25. The mini-brush part 23 is provided integrally with the tip side of the mounting base part 25.

  The user grips the handle 24 of the hair treatment tool 20 with his / her hand, and rotates or tilts the mounting base 25, while holding the comb 21, brush 22, and mini-brush 23 together with the scalp. By arranging them so as to face each other, it is possible to easily perform an operation of pushing out the hair, an operation of combing the hair, and an operation of combing a fine portion of the hair. As described above, the hair treatment agent brush 10 of the present embodiment constitutes the brush part 22 of the hair treatment tool 20, and includes a first agent composition 30a and a second agent composition 30b. For example, the hair treatment agent brush 10 is placed on the upper surface 11a of the brush stand 11 in the length direction X with the brush part 22 of the hair treatment agent brush 10 shown in FIG. 1 facing upward (see FIG. 5). By moving 10 in the width direction Y of the brush stand 11 so as to face the scalp, the first composition 30a and the second composition 30b are efficiently mixed while combing the hair, and the hair is dyed. The agent can be applied to the hair.

[Brush for hair treatment agent]
The hair treatment agent brush 10 of the present embodiment is arranged in a plurality of rows in the width direction Y of the brush stand 11, and the first agent composition 30a and the second A hair treatment agent brush on which the agent composition 30b can be placed, as shown in FIGS. 1 and 3, provided along both side edges in the width direction Y of the brush stand 11; An outer brush tooth row 12 composed of a plurality of outer brush teeth 12a arranged at predetermined intervals in the length direction X of the brush 11, and adjacent to the inner side in the width direction Y of the brush base 11 of the outer brush tooth row 12. And an inner brush tooth row 13 made up of a plurality of inner brush teeth 13a arranged at predetermined intervals in the length direction X of the brush stand 11. The outer brush teeth 12a and the inner brush teeth 13a are set so that the tensile elastic modulus of the inner brush teeth 13a is lower than the tensile elastic modulus of the outer brush teeth 12a. The tensile elastic modulus of the inner brush teeth 13a is determined from the viewpoint of efficiently mixing the first agent composition 30a and the second agent composition 30b so that the hair dye can be applied to the hair. For the tensile modulus, it is preferably 1/10 or less, more preferably 1/20 or less, further preferably 1/40 or less, and preferably 1/500 or more, It is more preferably at least 1/400, more preferably at least 1/200. The inner brush teeth 13a and the outer brush teeth 12a are arranged in a staggered manner such that the center axis c 'of the inner brush teeth 13a does not overlap the center axis c of the outer brush teeth 12a in the width direction Y of the brush base 11. (See FIGS. 2 and 3). The central axis of each brush tooth is the central axis in the direction in which each brush tooth stands.

  As shown in FIG. 4, the outer brush teeth 12 a constituting the outer brush tooth row 12 preferably extend outward from the direction Z perpendicular to the base surface 11 b of the brush stand 11 in the width direction Y of the brush stand 11. It stands upright. Further, the inner brush teeth 13a constituting the inner brush teeth row 13 are such that the height of the tip in the direction Z perpendicular to the base surface 11b of the brush base 11 is greater than the height of the tip of the outer brush teeth 12a in this embodiment. In the form, it is erected so as to be lower. The inner brush teeth 13a are arranged in a staggered manner with respect to the outer brush teeth 12a such that the center axis c 'thereof does not overlap the center axis c of the outer brush teeth 12a in the width direction Y of the brush base 11. (See FIGS. 2 and 3), when the hair dye composition is applied to the hair, the tip 13b is preferably placed between the adjacent outer brush teeth 12a via the outer brush. It is possible to deform until it protrudes outward from the tooth row 12 (see FIG. 4).

  In the present embodiment, a predetermined interval is arranged in the length direction X of the brush stand 11 at an intermediate portion between the inner brush tooth rows 13 on both sides (an intermediate portion in the width direction Y of the brush stand 11). An intermediate brush tooth row 14 including a plurality of intermediate brush teeth 14a is provided (see FIG. 1).

  Furthermore, in the present embodiment, an end composed of a plurality of end brush teeth 15a arranged at predetermined intervals in the width direction Y of the brush stand 11 at both ends in the length direction X of the brush stand 11. A part brush tooth row 15 is provided (see FIG. 1).

(Brush stand)
In the present embodiment, the hair treatment agent brush 10 constituting the brush part 22 of the hair treatment tool 20 includes a brush base 11 having a vertically long, substantially rectangular planar shape as shown in FIGS. 1 and 3. . The brush stand 11 stands upright from the upper surface 11a thereof, and an outer brush tooth row 12 composed of a plurality of outer brush teeth 12a, and an inner brush tooth row 13 composed of a plurality of inner brush teeth 13a, An intermediate brush tooth row 14 including a plurality of intermediate brush teeth 14a and an end brush tooth row 15 including a plurality of end brush teeth 15a are provided.

  In this embodiment, as shown in FIG. 4, the brush stand 11 is made of a resin similar to the handle portion 24 and the mounting substrate portion 25 of the hair treatment tool 20, for example, a polyethylene resin, a polypropylene resin, an ABS resin (acrylonitrile resin). A butadiene / styrene copolymer resin) or the like, and an elastomer mounted so as to be fitted into a base portion 11c, which is a part integrally formed therewith, and into a fitting recess 11e formed in the base portion 11c. And a soft base portion 11d formed by using the same. The fixing of the soft base 11d to the fitting concave portion 11e employs, in addition to fixing by fitting, fixing by molding such as insert molding, two-color molding, or fixing using an adhesive or an adhesive. be able to.

  The fitting recess 11e has a vertically-long, substantially rectangular planar shape that is substantially similar to the planar shape of the brush stand 11 by concavely recessing an inner region surrounded by the annular peripheral portion of the base 11c. Is formed. The upper surface of the base portion 11c and the soft base are joined to the fitting concave portion 11e by integrally fitting the soft base portion 11d molded so as to have a similar vertically long substantially rectangular planar shape. In a state where the upper surface of the portion 11d is continuous with the upper surface of the portion 11d, the brush stand 11 in which these are integrated is formed. In the present embodiment, the outer brush tooth row 12 and the end brush tooth row 15 that stand upright from the peripheral portion of the base 11c on the upper surface 11a of the brush base 11 and are integrally formed with the base 11c are formed. An inner brush tooth row 13 and an intermediate brush tooth row 14 are provided, and are erected upward from an inner region formed by the soft base 11d and integrally formed with the soft base 11d.

(Outer brush teeth)
Outer brush teeth rows 12 provided along both side edges in the width direction Y, which are peripheral portions of the brush stand 11, are arranged at predetermined intervals in the length direction X of the brush stand 11. , And a plurality of (in this embodiment, 15) outer brush teeth 12a. The outer brush teeth 12a have a higher tensile modulus than the inner brush teeth 13a, and preferably have a rigidity that does not bend when the hair dye composition is applied to the hair. Since the outer brush teeth 12a of the outer brush tooth row 12 have such rigidity, preferably, the hair is combed by moving the hair treatment agent brush 10 in the width direction Y of the brush base 11. In addition, as described later, the first agent 30a containing an alkali agent and the second agent 30b containing an oxidizing agent are efficiently mixed by a synergistic effect with the bending deformation of the inner brush teeth 13a, and the hair dye The composition can be applied to the back of the hair.

  Here, as described below, by appropriately selecting the material, cross-sectional shape, cross-sectional dimension, and tip height of the outer brush teeth 12a, the outer brush teeth 12a apply the hair dye composition to the hair. At this time, it can have rigidity that does not bend.

  The outer brush teeth 12a can be made of a material using a polyethylene resin, a polypropylene resin, an ABS resin (acrylonitrile / butadiene / styrene copolymer resin) or the like, for example, similarly to the base 11c of the brush base 11. In the present embodiment, the material is made of polypropylene.

  Further, for example, the tensile elastic modulus of the polypropylene resin is about 1000 to 2000 MPa (measured value according to JIS K7161, 7162: 1994), which is several tens of magnitudes smaller than the tensile elastic modulus of the elastomer used for the inner brush teeth 13a described later. It has a value several hundred times larger.

  The cross-sectional shape of the outer brush teeth 12a may be circular, elliptical, polygonal, or the like. Further, different cross-sectional shapes may be provided in the height direction (the direction Z perpendicular to the base surface 11b of the brush stand 11). For example, the cross-sectional shape of the root portion of the outer brush tooth 12a may be circular, and the cross-sectional shape of the tip portion may be elliptical.

  The cross-sectional dimension of the root portion of the outer brush teeth 12a (diameter if the cross section is circular, equivalent circle diameter if the cross section is non-circular) can be, for example, about 1 to 5 mm. Further, the base portion may have a different cross-sectional dimension in the height direction (the direction Z perpendicular to the base surface 11b of the brush stand 11).

  The tip height of the outer brush teeth 12a (the height in the direction Z perpendicular to the base surface 11b of the brush stand 11) is, for example, about 4 to 15 mm.

  In the present embodiment, each of the outer brush teeth 12a has, for example, an approximately 1 mm outer diameter, and has a vertically long generally frustoconical shape whose tip is machined into a spherical shape. It is erected so as to have a height of, for example, about 7 mm from the base surface 11b of the eleventh. The cross-sectional shape of the outer brush teeth 12a is circular, the diameter of the root portion is about 2 mm, and the diameter of the tip portion is about 1 mm. A plurality of outer brush teeth 12a are arranged in a row at predetermined intervals in the length direction X of the brush stand 11, for example, at an interval between central axes c of 4 mm. Outer brush tooth rows 12 are formed on both side edges of the brush stand 11 in the width direction Y, respectively.

  The preferred range of the interval between the center axes c of the plurality of outer brush teeth 12a in the length direction X of the brush stand 11 is about 1 to 6 mm.

  Further, in the present embodiment, the outer brush teeth 12a constituting the outer brush teeth row 12 have the center axis c thereof extending from the direction Z perpendicular to the base surface 11b of the brush base 11 in the width direction Y of the brush base 11. Is preferably set up at an angle of inclination of 5 to 45 degrees, more preferably 5 to 30 degrees, and still more preferably 5 to 20 degrees. This makes it possible to place a larger amount of the hair dye composition on the upper surface 11a of the brush stand 11 and to apply the hair dye composition to the hair while combing the hair, When the brush 10 for hair treatment agent is slid in the width direction Y of 11, the outer brush teeth 12 a serve as a guide, and the hair moves from the tip side of the outer brush teeth 12 a to the brush stand 11 side, thereby removing the hair. It becomes possible to make it easier to make contact with the hair dye composition.

  Here, the base surface 11b of the brush stand 11 is provided on the side edges on both sides in the width direction Y of the brush stand 11, and the outer brush teeth 12a forming a pair of outer brush teeth rows 12 of the brush stand 11 This is a flat virtual reference surface obtained by connecting the standing base end of the upper surface 11a between the outer brush teeth rows 12 on both sides.

(Inner brush teeth)
An inner brush tooth row 13 is provided inside the outer brush tooth row 12 adjacent to the width direction Y of the brush base 11, and a plurality of inner brush tooth rows 13 are arranged at predetermined intervals in the length direction X of the brush base 11. It is constituted by 14 (in the present embodiment, 14) inner brush teeth 13a. The inner brush teeth 13a are provided integrally with the soft base 11d of the brush base 11, as described above. The inner brush teeth 13a of the inner brush teeth 13 have a lower elastic modulus than the outer brush teeth 12a, and when applying the hair dye composition to the hair, as shown in FIG. The inner brush teeth 13a bend in the direction opposite to the moving direction M, so that the hair dye composition in the region sandwiched between the inner brush teeth 13a and the hair is removed from the surface of the hair one by one. It becomes possible to push in between. This also makes it possible to effectively apply the hair dye composition to the back of the hair.

  Further, when the hair dye composition is applied to the hair, the outer brush teeth 12a having rigidity that does not bend, and the hair between the plurality of outer brush teeth 12a, the hair dye composition is applied to the outer brush. The hair dye composition can be kept inside the tooth row 12, and the hair dye composition can be mixed more efficiently by a synergistic effect with the bending operation of the inner brush teeth 13a.

  Here, as described below, by appropriately selecting the material, cross-sectional shape, cross-sectional dimension, and tip height of the inner brush teeth 13a, the inner brush teeth 13a apply the hair dye composition to the hair. At this time, it can have bending rigidity.

  The material of the inner brush teeth 13a is preferably an elastomer. In this embodiment, a styrene elastomer is used. For example, the tensile modulus of a styrene-based elastomer is about 5 to 50 MPa (measured value according to JIS K7113).

  The cross-sectional shape of the inner brush teeth 13a may be circular, elliptical, polygonal, or the like. Further, different cross-sectional shapes may be provided in the height direction (the direction Z perpendicular to the base surface 11b of the brush stand 11). For example, the cross-sectional shape of the root portion of the inner brush teeth 13a may be circular, and the cross-sectional shape of the tip portion may be elliptical.

  The cross-sectional dimension of the root portion of the inner brush teeth 13a (diameter if the cross section is circular, equivalent circle diameter if non-circular) can be, for example, about 1 to 5 mm. Further, the base portion may have a different cross-sectional dimension in the height direction (the direction Z perpendicular to the base surface 11b of the brush stand 11).

  The tip height of the inner brush teeth 13a (the height in the direction Z perpendicular to the base surface 11b of the brush stand 11) is, for example, about 3 to 14 mm.

  In the present embodiment, each of the inner brush teeth 13a made of an elastomer constituting the inner brush tooth row 13 has, for example, an approximately 1 mm outer diameter, and has a vertically long generally frustoconical shape whose tip is machined into a spherical shape. The brush is erected so that the height of the tip is, for example, about 6 mm from the base surface 11b of the brush stand 11. The height of the tip of the inner brush teeth 13a made of the elastomer in the direction Z perpendicular to the base surface 11b of the brush base 11 is preferably about 1 mm higher than the height of the tip of the outer brush teeth 12a of the outer brush tooth row 12. Is set up so as to be lowered by the height difference h (see FIG. 4). Since the height of the tip of the inner brush tooth 13a of the elastomer is lower than the height of the tip of the outer brush tooth 12a of the outer brush tooth row 12, the outer brush tooth is not disturbed by the inner brush tooth 13a. While combing the hair in row 12, it is possible to apply the hair dye composition to the hair. From such a viewpoint, the height of the tip of the inner brush tooth 13a in the direction Z perpendicular to the base surface 11b of the brush stand 11 is 0.5 to 10 mm higher than the height of the tip of the outer brush tooth 12a. It is preferable to be erected so as to be lower at h.

  Further, in the present embodiment, the inner brush teeth 13a of the elastomer constituting the inner brush teeth 13 are arranged at predetermined intervals in the length direction X of the brush base 11, similarly to the outer brush teeth 12a of the outer brush teeth 12. For example, a plurality of lines are arranged in a row at an interval between the central axes c ′ of, for example, 4 mm. As a result, a pair of inner brush teeth 13 are formed adjacent to the inside of the outer brush teeth 12 at the side edges on both sides in the width direction Y of the soft base 11d of the brush base 11. . Also, the inner brush teeth 13a made of the elastomer are shifted from the outer brush teeth 12a of the outer brush tooth row 12 by half the pitch between the adjacent outer brush teeth 12a in the length direction X of the brush base 11. , Are arranged in a staggered pattern. As a result, the inner brush teeth 13a of the elastomer are arranged such that the center axis c ′ thereof does not overlap the center axis c of the outer brush teeth 12a of the outer brush tooth row 12 in the width direction Y of the brush base 11. . Since the center axis c ′ of the inner brush teeth 13a made of the elastomer is arranged so as not to overlap the center axis c of the outer brush teeth 12a in the width direction Y of the brush base 11, the brush 10 for the hair treatment agent is preferably used. Is moved in the width direction Y of the brush stand 11 so that the outer brush teeth 12a and the inner brush teeth 13a do not interfere with each other when the hair dye composition is applied to the hair, as shown in FIG. The inner brush teeth 13a can be bent in a direction opposite to the direction M in which the treatment agent brush 10 is moved.

  Furthermore, in the present embodiment, the inner brush teeth 13a made of the elastomer constituting the inner brush teeth row 13 have a tip portion 13b that defines a space between each pair of adjacent outer brush teeth 12a of the outer brush teeth row 12. It is formed so as to be deformable until it protrudes out of the brush teeth row 12 through the teeth (see FIGS. 4 and 7). The inner brush teeth 13a made of the elastomer of the inner brush teeth row 13 are deformable through the space between the adjacent outer brush teeth 12a until the tip 13b projects outside the outer brush teeth row 12. As a result, as shown in FIG. 7, the tip 13 b of the inner brush teeth 13 a is deformed until it protrudes outward from the outer brush tooth row 12, so that the side faces of the outer brush teeth 12 a and the inner brush teeth 13 a In the meantime, the divided hair can be sandwiched, thereby making it possible to more effectively spread the hair dye composition to the back side of the hair.

(End brush teeth)
A plurality of end brush teeth rows 15 provided at both ends in the longitudinal direction X of the brush stand 11 are arranged at predetermined intervals in the width direction Y of the brush stand 11 (this embodiment). (In the embodiment, three) end brush teeth 15a. As described above, the end brush teeth 15a are integrally formed with the base 11c of the brush base 11, so that the hair dye composition is applied to the hair similarly to the outer brush teeth 12a of the outer brush teeth row 12. When applied, it has rigidity that does not bend.

  Here, as described below, the end brush teeth 15a, like the outer brush teeth 12a, the material, the cross-sectional shape, the cross-sectional dimensions, the height of the tip, by appropriately selecting the hair dye composition. When applied to hair, it can have rigidity that does not bend.

  The material of the end brush teeth 15a may be, for example, a material using polyethylene resin, polypropylene resin, ABS resin (acrylonitrile-butadiene-styrene copolymer synthetic resin), or the like. In the present embodiment, the material is made of polypropylene.

  Further, for example, the tensile elastic modulus of the polypropylene resin is about 1000 to 2000 MPa (measured value according to JIS K7161, 7162: 1994), which is several tens of magnitudes higher than the tensile elastic modulus of the elastomer used for the inner brush teeth 13a. It has a value several hundred times larger.

  The cross-sectional shape of the end brush teeth 15a may be circular, elliptical, polygonal, or the like. Further, different cross-sectional shapes may be provided in the height direction (the direction Z perpendicular to the base surface 11b of the brush stand 11). For example, the cross-sectional shape of the root portion of the end brush tooth 15a may be circular, and the cross-sectional shape of the tip portion may be elliptical.

  The cross-sectional dimension of the root portion of the end brush tooth 15a (the diameter is equivalent if the cross-section is circular, and the equivalent circle diameter if the cross-section is non-circular) can be, for example, about 1 to 5 mm. Further, the base portion may have a different cross-sectional dimension in the height direction (the direction Z perpendicular to the base surface 11b of the brush stand 11).

  The tip height of the end brush teeth 15a (the height in the direction Z perpendicular to the base surface 11b of the brush stand 11) is, for example, about 4 to 15 mm.

  In the present embodiment, each of the end brush teeth 15a of the end brush tooth row 15 has an outer diameter of about 1 mm, for example, like the outer brush teeth 12a of the outer brush tooth row 12. It has a vertically elongated substantially frusto-conical shape, and is set upright so that the height of the tip is, for example, about 7 mm from the base surface 11b of the brush stand 11. Also, the cross-sectional shape of the end brush teeth 15a is circular, the diameter of the root part is about 2 mm, and the diameter of the tip part is about 1 mm.

  Also, the end brush teeth 15a of the end brush tooth row 15 are arranged at predetermined intervals in the width direction Y of the brush base 11, for example, at an interval between central axes of, for example, 4 mm. As a result, end brush teeth rows 15 are formed on both side edges of the brush stand 11 in the longitudinal direction X. The end brush teeth 15 a of the end brush tooth row 15 are erected in a direction Z perpendicular to the base surface 11 b of the brush stand 11. By providing the end brush teeth 15 at both ends in the length direction X of the brush stand 11, as shown in FIG. In a region surrounded by the outer brush teeth 12 on both sides in the width direction Y of the base 11, an appropriate amount of the hair dye composition can be easily placed on the upper surface 11a of the brush base 11.

  The preferred range of the interval between the central axes of the plurality of end brush teeth 15a in the width direction Y of the brush stand 11 is about 1 to 6 mm.

(Intermediate brush teeth)
A plurality of intermediate brush teeth 14 provided at an intermediate portion between the inner brush teeth 13 on both sides are arranged at predetermined intervals in the length direction X of the brush base 11 (this embodiment). In this case, the intermediate brush teeth 14a are made of 13) elastomers. The intermediate brush tooth 14a made of an elastomer is provided integrally with the soft base 11d made of the elastomer of the brush stand 11 as described above. As shown in FIG. 6, when the hair dye composition is applied to the hair, the intermediate brush tooth 14a made of the elastomer of the intermediate brush tooth row 14 is used similarly to the inner brush tooth 13a. In the direction opposite to the moving direction M. Thereby, similarly to the inner brush teeth 13a, the hair dye composition sandwiched between the intermediate brush teeth 14a and the hair can be pressed between the individual hairs from the surface of the hair. The hair dye composition can be effectively applied to the back side.

  Here, as described below, the intermediate brush tooth row 14 is, similarly to the inner brush teeth 13a, a material, a cross-sectional shape, a cross-sectional dimension, a tip height, by appropriately selecting the hair dye composition. When applied to the hair, it can have a bending rigidity.

  The material of the intermediate brush teeth 14a is an elastomer. In this embodiment, a styrene elastomer is used.

  Further, for example, the tensile modulus of the styrene-based elastomer is about 5 to 50 MPa (measured value according to JIS K7113).

  The cross-sectional shape of the intermediate brush tooth 14a may be circular, elliptical, polygonal, or the like. Further, different cross-sectional shapes may be provided in the height direction (the direction Z perpendicular to the base surface 11b of the brush stand 11). For example, the cross-sectional shape of the root portion of the intermediate brush tooth 14a may be circular, and the cross-sectional shape of the tip portion may be elliptical.

  The root part cross-sectional dimension of the intermediate brush tooth 14a (diameter if the cross section is circular, equivalent circle diameter if the cross section is non-circular) can be, for example, about 1 to 5 mm. Further, the base portion may have a different cross-sectional dimension in the height direction (the direction Z perpendicular to the base surface 11b of the brush stand 11).

  The tip height (height in the direction Z perpendicular to the base surface 11b of the brush stand 11) of the intermediate brush tooth 14a is, for example, about 2 to 10 mm.

  In the present embodiment, each of the intermediate brush teeth 14a constituting the intermediate brush tooth row 14 has an approximately frusto-conical shape with a longitudinally elongated frusto-conical end, for example, having an outer diameter of about 1 mm. The brush is erected such that the height of the tip is about 5 mm from the base surface 11b of the brush stand 11, for example. The intermediate brush tooth 14a is preferably such that the height of the tip is higher in the direction Z perpendicular to the base surface 11b of the brush base 11 than the height of the tip of the inner brush teeth 13a constituting the inner brush tooth row 13. It is erected so as to be lower by about 0.5 to 2 mm. The hair dye composition can be stably placed on the upper surface of the brush base 11 by making the height of the tip of the intermediate brush tooth 14a lower than the height of the tip of the inner brush tooth 13a.

  Further, in the present embodiment, the intermediate brush teeth 14a constituting the intermediate brush teeth row 14 are arranged at predetermined intervals in the length direction X of the brush base 11, similarly to the inner brush teeth 13a of the inner brush teeth row 13. For example, a plurality of lines are arranged in a row at intervals between central axes of, for example, 4 mm. As a result, an intermediate brush tooth row 14 is formed at the center of the soft base 11d of the brush base 11. Also, the intermediate brush teeth 14a are shifted from the inner brush teeth 13a of the inner brush tooth row 13 by half the pitch between adjacent inner brush teeth 13a in the length direction X of the brush base 11, They are arranged in a staggered pattern.

  An intermediate brush tooth row 14 is provided at an intermediate portion between the inner brush tooth rows 13 on both sides, so that when the hair dye composition is applied to the hair, the inner brush teeth 13a and the intermediate brush tooth rows are provided. As shown in FIG. 6, the intermediate brush teeth 14a can be bent in the direction opposite to the direction M in which the hair treatment agent brush 10 is moved without interfering with the intermediate brush teeth 14a. Makes it possible to press the hair dye composition sandwiched between the individual hairs from the surface of the hair. This allows the hair dye composition to be effectively applied to the back of the hair.

  Further, in the width direction Y of the brush stand 11, the area between the inner brush tooth row 13 and the intermediate brush tooth row 14 is an area where no brush tooth is present. It is preferable from the viewpoint that it can be a mark to be placed and that the hair dye composition can be stably placed on the upper surface of the brush stand.

  In the width direction Y of the brush stand 11, the width w of such an area (the width between the side surfaces of the brush teeth at the root of the inner brush teeth 13 and the intermediate brush teeth 14, see FIG. 3) is preferably 3 to 8 mm. And 3 to 6 mm are more preferable. In this embodiment, it is 4 mm.

[Operation of hair dyeing]
In order to apply the hair dye composition to the hair by using the hair treatment agent brush 10 having the above-described configuration and to dye the hair, the user holds the handle portion 24 by hand, for example. With the brush portion 22 (hair treatment agent brush 10) of 20 facing upward, an alkali agent and an oxidizing agent are removed from a double aerosol container described in, for example, JP-A-2002-119328 and JP-A-2003-205938. By discharging a first agent containing a dye and a second agent containing hydrogen peroxide as an oxidizing agent, preferably in the form of a cream or a foam, the second agent discharged as shown in FIG. The first agent and the second agent are placed on the upper surface 11a of the brush stand 11 while being extended in the length direction X of the brush stand 11 and arranged in the width direction Y of the brush stand 11. Thereby, the quality and quantity of each of the first agent and the second agent before mixing can be easily confirmed visually.

  Thereafter, the user operates the hair treatment tool 20 so that the hair treatment agent brush 10 on which the first and second agents are placed is opposed to the hair, and, for example, by the comb portion 21 of the hair treatment tool 20. The hair treatment agent brush 10 is preferably slid in the width direction Y of the brush stand 11 in a state where the hair treatment agent brush 10 is pressed along the divided hair. At this time, the first agent and the second agent sandwiched between the inner brush teeth 13a and the hair are pushed apart, and these agents overlap each other. Then, by continuing the sliding movement of the hair treatment agent brush 10 by the user, it is possible to mix the first agent and the second agent while applying the hair dye so that the hair dye is applied to the hair. Become. In addition, the user uses the mini-brush part 23 of the hair treatment tool 20, for example, to scoop out the hair dye applied to the hair, and to adjust the hair to a fine part such as a hairline or a sideburn part. By applying the hair dye in this manner, it is possible to easily treat the hair in these fine parts.

  According to the hair treating agent brush 10 of the present embodiment having the above-described configuration, when the hair dye composition is applied to the hair while combing the hair, the first agent containing the alkaline agent and the oxidizing agent are used. It becomes possible to further improve the mixing property with the contained second agent, and to sufficiently apply the hair dye composition to the back side of the hair.

  That is, according to the present embodiment, the hair treatment agent brush 10 has the outer brush teeth formed of a plurality of outer brush teeth 12a, each of which is provided along both side edges of the brush stand 11 in the width direction Y. A row 12 and an inner brush tooth row 13 formed of a plurality of elastomer inner brush teeth 13a provided adjacent to the inner side of the brush stand 11 of the outer brush tooth row 12 in the width direction Y. The inner brush teeth 13a and the outer brush teeth 12a are arranged in a staggered manner in the width direction Y of the brush base 11, and preferably, the tip 13b of the inner brush teeth 13a is located between the adjacent outer brush teeth 12a. The outer brush tooth row 12 can be deformed until it protrudes outward through the interval portion.

  Thus, according to the hair treatment agent brush 10 of the present embodiment, when the hair treatment agent brush 10 is slid in the width direction Y of the brush stand 11 to apply the hair dye to the hair while combing the hair. In addition, the outer brush teeth 12a of the outer brush teeth 12 arranged outside the inner brush teeth 13a of the inner brush teeth 13 and the wall effect of hair, and the inner brush teeth 13a of the inner brush teeth 13 bend. Due to the synergistic effect of (1) and (2), the mixing properties of the first and second agents can be improved as described below, and the hair dye composition can be applied to the back side of the hair.

1. Since the inner brush teeth 13a and the outer brush teeth 12a are arranged in a zigzag manner in the width direction Y of the brush base 11, the hair bundle is subdivided into a narrow gap between the brush teeth 12a and 13a in an undulating state. .

2. When the hair treatment agent brush 10 is slid in the width direction Y of the brush stand 11 and the hair dye is applied to the hair while combing the hair, the outer brush opposite to the direction M in which the hair treatment agent brush 10 is moved is moved. The first agent and the second agent are brought to the dentition 12 side, and the first agent and the second agent are moved by the relative movement between the hair that is divided into small parts that are undulating in the narrow gap between the brush teeth 12a and 13a. The mixing of the second agent is promoted.

3. When the hair treatment agent brush 10 is slid in the width direction Y of the brush stand 11 and the hair dye is applied to the hair while combing the hair, the hair treatment agent brush 10 is moved in a direction opposite to the direction M in which the hair treatment agent brush 10 is moved. The inner brush teeth 13a of the elastomer bend so that the ends of the hairs are bent, so that the hair dye in the area sandwiched between the inner brush teeth 13a and the hair is removed from the surface of the hair one by one. Since the hair dye can be pushed in and the hair dye can easily reach the back side of the hair, the hair dye can be applied to the entire circumference of the hair.

  Note that the present invention is not limited to the above embodiment, and various changes can be made. For example, it is not necessary to provide an intermediate brush tooth row at an intermediate portion between both inner brush tooth rows, and it is not always necessary to provide an end brush tooth row at both ends in the length direction of the brush mount. There is no. In addition, the hair treatment agent brush does not necessarily need to be used as a part of the brush portion of the hair treatment tool having a comb portion, a brush portion, and a mini-brush portion. It can also be used as a special brush for processing.

  Further, the inner brush teeth constituting the inner brush teeth row are erected so that the height of the tip in a direction perpendicular to the base surface of the brush base is equal to or less than the height of the tip of the outer brush teeth. It suffices if the height of the outer brush tooth is the same as the height of the tip of the outer brush tooth.

  Preferred embodiments of the present invention will be further disclosed below with respect to the embodiments described above.

<1> An aerosol-type hair dye kit comprising a first aerosol hair dye composition, a second aerosol hair dye composition, and a brush for a hair treatment agent,
The first agent composition for aerosol hair dye contains the following components (1A) to (1F),
(1A) Cationic surfactant
(1B) Nonionic surfactant
(1C) Higher alcohol
(1D) Oils that are liquid at 25 ° C
(1E) Oxidation dye intermediate
(1F) Alkali agent The second agent composition for aerosol hair dye contains the following components (2A) to (2D),
(2A) Hydrogen peroxide
(2B) Nonionic surfactant
(2C) Higher alcohol
(2D) Hydrocarbon hair treatment agent brushes are provided along side edges on both sides in the width direction of the brush stand, and a plurality of the brushes are arranged at predetermined intervals in the length direction of the brush stand. An outer brush tooth row composed of outer brush teeth, and a plurality of inner brush teeth provided adjacent to the inner side of the outer brush teeth in the width direction and arranged at predetermined intervals in the length direction. Inner brush teeth row, wherein the tensile elastic modulus of the inner brush teeth is lower than the tensile elastic modulus of the outer brush teeth.
Aerosol hair dye kit.

<2> The tensile elastic modulus of the inner brush teeth is preferably 1/10 or less, more preferably 1/20 or less, still more preferably 1/40 or less, and more preferably 1/10 or less with respect to the tensile elastic modulus of the outer brush teeth. The aerosol-type hair dye kit according to <1>, wherein is 1/500 or more, more preferably 1/400 or more, and still more preferably 1/200 or more.

<3> The aerosol-type hair dye kit according to <1> or <2>, wherein the inner brush teeth and the outer brush teeth are preferably arranged in a staggered manner.

<4> Preferably, any one of <1> to <3>, wherein the outer brush teeth are erected from a direction perpendicular to a base surface of the brush stand to an outside in a width direction of the brush stand. 2. The aerosol-type hair dye kit according to claim 1.

<5> Preferably, the outer brush teeth are erected from the direction perpendicular to the base surface of the brush stand to the outside in the width direction of the brush stand at an inclination angle of 5 to 45 degrees. The aerosol-type hair dye kit according to any one of 1> to <3>.

<6> Preferably, the inner brush teeth are erected so that the height of the tip in a direction perpendicular to the base surface of the brush base is equal to or less than the height of the tip of the outer brush teeth. <1> The aerosol-type hair dye kit according to any one of <1> to <5>.

<7> Preferably, the inner brush teeth are erected such that the height of the tip in a direction perpendicular to the base surface of the brush base is lower by 0.5 to 10 mm than the height of the tip of the outer brush teeth. The aerosol-type hair dye kit according to any one of <1> to <5>.

<8> Preferably, the outer brush teeth are formed using polyethylene resin, polypropylene resin or ABS resin (acrylonitrile-butadiene-styrene copolymer resin), and the inner brush teeth are formed using elastomer. The aerosol-type hair dye kit according to any one of <1> to <7>.

<9> Preferably, an intermediate brush tooth row composed of a plurality of intermediate brush teeth arranged at predetermined intervals in the length direction of the brush stand is provided at an intermediate portion between the inner brush tooth rows on both sides. The aerosol-type hair dye kit according to any one of <1> to <8>, which is provided.

<10> Preferably, an end brush tooth row composed of a plurality of end brush teeth arranged at predetermined intervals in the width direction of the brush stand is provided at both ends in the length direction of the brush stand. The aerosol-type hair dye kit according to any one of <1> to <9>.

<11> Preferably, the component (1A) is one or more selected from an alkyltrimethylammonium salt, an alkoxyalkyltrimethylammonium salt, and a dialkyldimethylammonium salt, any one of <1> to <10>. The aerosol-type hair dye kit according to claim 1.

<12> Preferably, the content of the component (1A) in the first agent composition is preferably 0.3% by mass or more, more preferably 0.5% by mass or more, and preferably 3% by mass or less, more preferably The aerosol-type hair dye kit according to any one of <1> to <11>, wherein is not more than 2% by mass.

<13> Preferably, the aerosol type according to any one of <1> to <12>, wherein the component (1B) is a polyoxyalkylene alkyl or alkenyl ether represented by the following general formula (4). Hair dye kit.
R ⁵ -O-[(CH ₂ ) _x -O] _n -H (4)
[In the formula, R ⁵ represents a linear or branched alkyl or alkenyl group having 8 to 22 carbon atoms, x represents a number of 2 or 3, and n represents a number of 1 to 100 on average. ]

<14> Preferably, the content of the component (1B) in the first agent composition is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and preferably 5% by mass or less, more preferably The aerosol-type hair dye kit according to any one of <1> to <13>, wherein is not more than 3% by mass.

<15> The aerosol-type hair dye kit according to any one of <1> to <14>, wherein the component (1C) is preferably a higher alcohol represented by the following general formula (6).
R ⁹ -OH (6)
[In the formula, R ⁹ represents a linear or branched alkyl or alkenyl group having 12 to 24 carbon atoms. ]

<16> Component (1C) is preferably (1C ₁ ) a compound in which R ⁹ in general formula (6) is a linear alkyl group having 12 or more and less than 20 carbon atoms, and further having 14 or more and less than 20 carbon atoms; (1C ₂ ) a combination of R ⁹ in the general formula (6) is a straight-chain alkyl group having 20 to 24 carbon atoms, and further having 20 to 22 carbon atoms, wherein the component (1C ₂ ) The mass ratio with (1C ₁ ) (1C ₂ ) / (1C ₁ ) is preferably 0.20 or more, more preferably 0.22 or more, still more preferably 0.24 or more, and preferably 0.75 or less, more preferably 0.73 or less. The aerosol-type hair dye kit according to <15>, wherein the kit is more preferably 0.71 or less.

<17> Preferably, the content of the component (1C) in the first agent composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, still more preferably 1.0% by mass or more, and preferably The aerosol hair dye kit according to any one of <1> to <16>, wherein is not more than 10% by mass, more preferably not more than 8% by mass, and still more preferably not more than 6% by mass.

<18> Preferably, any one of <1> to <17>, wherein the component (1D) is one or more selected from hydrocarbon oils, silicone oils, ester oils, fluorine oils, and animal and vegetable oils. The aerosol-type hair dye kit according to the item.

<19> Preferably, the content of the component (1D) in the first agent composition is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.5% by mass or more, and preferably The aerosol hair dye kit according to any one of <1> to <18>, wherein is not more than 20% by mass, more preferably not more than 17% by mass, and still more preferably not more than 13% by mass.

<20> The mass ratio (1D) / (1C) of the component (1D) to the component (1C) in the first agent composition is preferably 0.16 or more, more preferably 0.20 or more, still more preferably 0.25 or more, and still more preferably. Is 0.30 or more, more preferably 0.31 or more, further preferably 0.40 or more, further preferably 0.50 or more, and also preferably 2.20 or less, more preferably 2.00 or less, still more preferably 1.90 or less, further more preferably 1.84 or less, furthermore The aerosol-type hair dye kit according to any one of <1> to <19>, which is preferably 1.70 or less, more preferably 1.50 or less.

<21> Preferably, the aerosol type according to any one of <1> to <20>, wherein the component (2B) is a polyoxyethylene alkyl or alkenyl ether represented by the following general formula (8). Hair dye kit.
R ¹⁰ -O- (CH ₂ CH ₂ -O) _m -H (8)
[In the formula, R ¹⁰ represents a linear or branched saturated or unsaturated alkyl or alkenyl group having 8 to 22 carbon atoms, and m represents a number of 1 to 100 on average. ]

<22> Component (2B) is preferably (2B ₁ ) wherein m in general formula (8) is 1 or more and less than 30, and (2B ₂ ) m in general formula (8) is 30 or more and 100 or less. And more preferably (2B ₁ ) m in the general formula (8) is 1 or more and 20 or less, and (2B ₂ ) m in the general formula (8) is 35 or more and 60 or less. Combination with certain compounds, more preferably (2B ₁ ) wherein m in general formula (8) is 1 or more and 10 or less, and (2B ₂ ) m in general formula (8) is 35 or more and 45 or less A mass ratio of the component (2B ₁ ) to the component (2B ₂ ) [(2B ₁ ) / (2B ₂ )] is preferably 0.05 or more, more preferably 0.11 or more, and still more preferably 0.18 or more. The aerosol-type hair dye kit according to <21>, which is at least 0.25 or more, preferably at most 4.00, more preferably at most 1.50, still more preferably at most 1.00, even more preferably at most 0.67.

<23> When the content of the component (2B) in the second agent composition is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, still more preferably 2% by mass or more, and still more preferably 5% by mass or more. And preferably 15% by mass or less, more preferably 12% by mass or less, still more preferably 10% by mass or less, and still more preferably 9% by mass or less, according to any one of <1> to <22>. Aerosol hair dye kit.

<24> The aerosol-type hair dye kit according to any one of <1> to <23>, wherein the component (2C) is preferably a higher alcohol represented by the following general formula (9).
R ¹¹ -OH (9)
[In the formula, R ¹¹ represents a linear or branched alkyl or alkenyl group having 12 to 24 carbon atoms. ]

<25> The component (2C) is preferably (2C ₁ ) a compound in which R ¹¹ in the general formula (9) is a linear alkyl group having 12 or more and less than 20 carbon atoms, and (2C ₂ ) a general formula (9 ) Wherein R ¹¹ is a straight-chain alkyl group having 20 or more and 24 or less carbon atoms, more preferably (2C ₁ ) R ¹¹ in the general formula (9) is a straight-chain having 14 or more and 18 or less carbon atoms (2C ₂ ) a combination of (2C ₂ ) wherein R ¹¹ in the general formula (9) is a straight-chain alkyl group having 20 to 22 carbon atoms, wherein the component (2C ₁ ) and the component (2C 2 ₂ ) and the mass ratio [(2C ₁ ) / (2C ₂ )] is preferably 0.05 or more, more preferably 0.11 or more, still more preferably 0.17 or more, further preferably 0.25 or more, and preferably 19.00 or less. The aerosol-type hair dye kit according to <24>, wherein the kit is more preferably 9.00 or less, further preferably 5.67 or less, and still more preferably 4.00 or less.

<26> The content of the component (2C) in the second agent composition is preferably 0.5% by mass or more, more preferably 0.8% by mass or more, still more preferably 1.0% by mass or more, further preferably 2% by mass or more, It is still more preferably 3% by mass or more, and preferably 30% by mass or less, more preferably 25% by mass or less, still more preferably 20% by mass or less, further more preferably 15% by mass or less, and still more preferably 10% by mass or less. The aerosol-type hair dye kit according to any one of <1> to <25>, wherein the kit is more preferably 8% by mass or less.

<27> Preferably, the component (2D) is one or more selected from liquid paraffin, liquid isoparaffin, light isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin, and squalane, <1> to <26>. The aerosol-type hair dye kit according to any one of the above items.

<28> The content of the component (2D) in the second agent composition is preferably 3% by mass or more, more preferably 5% by mass or more, and preferably 30% by mass or less, more preferably 25% by mass. % Or less, more preferably 20% by mass or less, further preferably 15% by mass or less, more preferably 12% by mass or less, the aerosol-type hair dye kit according to any one of <1> to <27>.

<29> The total mass ratio of the components (2C) and (2D) to the component (2B) in the second agent composition [(2C) + (2D)] / (2B) is preferably 1.0 or more, more preferably Is at least 1.2, more preferably at least 1.5, and preferably at most 3.5, more preferably at most 3.3, even more preferably at most 3.2, the aerosol type according to any one of <1> to <28>. Hair dye kit.

<30> The mass ratio (2D) / (2C) of the component (2D) to the component (2C) in the second agent composition is preferably 1.2 or more, more preferably 1.3 or more, and preferably 2.2 or less. The aerosol-type hair dye kit according to any one of <1> to <29>, wherein the kit is more preferably 2.1 or less.

  A first agent composition and a second agent composition having the formulation shown in Table 1 were prepared. Next, a double aerosol container in which the inner bag enclosing the first agent composition and the inner bag enclosing the second agent composition are housed in independent aerosol containers (FIG. 2 of JP-A-2015-229666) ) Were filled with 40 g of the first agent composition and 40 g of the second agent composition, respectively, and further, nitrogen gas was charged between the inner bag and the container to produce an aerosol-type hair dye. .

[Brush for hair treatment agent]
The brush shown in FIG. 1 was used as a hair treatment agent brush. This brush has a brush base of 6 cm × 2 cm, and the brush base has an outer brush tooth made of polypropylene having a tensile modulus of 1300 MPa and an inner brush tooth made of a styrene-based elastomer having a tensile modulus of 10 MPa. It is arranged. Using this hair treating agent brush, the following hair dyeing treatment was evaluated.

(Hair dyeing and evaluation method)
From the double aerosol container of the aerosol-type hair dye, the first agent composition and the second agent composition are simultaneously discharged to place about 5 g on the hair treatment agent brush, from the top to the top of the hair. Was applied to a wig having a hair length of 25 cm. The first part composition and the second part composition were mixed while being applied on the hair of the wig.
When applying a hair dyeing treatment with an aerosol-type hair dye composition, it is difficult to apply the agent from the brush during application, it is easy to apply the agent to the base, it is easy to spread the agent, and it is dry. According to the following criteria, each of the items of "leveling property of gray hair after" was evaluated by five panelists who had experienced hair dyeing by a non-selective choice answering method of a direct judgment method.

Evaluation criteria for "the difficulty of the agent dripping from the brush at the time of application" Draw a straight line with a length of 5cm horizontally. The left end of the line is "no dripping from the brush" and the right end is "all dripping from the brush". Based on the ratio of the amount of dripping to the total amount of the dripping amount, the difficulty of dripping of the agent from the brush at the time of application was evaluated based on how many cm from the left end of this straight line. Table 1 shows the number of panelists who marked each item within 1 cm from the left end (the amount of dripping: 20% or less of the total amount) as "the resistance of the agent to dripping from the brush".

Evaluation criteria for "Ease of application of agent to root" Draw a 5cm-long straight line horizontally, the left end of the straight line is "the entire amount of the agent on the brush moves to the root", and the right end is "The agent on the brush is at the base" Based on the ratio of the amount of the agent transferred from the brush to the root as a whole, based on the scale ratio to the total amount of transfer of the agent from the brush, the evaluation of the ease of application of the agent to the root was determined by how many cm from the left end of this straight line. went. Table 1 shows the number of panelists who marked each item within 1 cm from the left end (the amount transferred to the root: 80% or more of the total amount) as "easiness of application of the agent to the root".

Evaluation criteria for "Ease of spreading of the agent" Draw a straight line of 5cm in length horizontally, and the left end of the straight line "After applying the brush with the agent to the top of the head, it can be moved from the top of the head to the side of the head without any resistance. The right end says, "After applying the brush on which the agent is applied to the top of the head, it does not move at all from the top of the head to the side of the head." Based on the amount ratio, the elongation of the agent was evaluated based on how many cm from the left end of this straight line. Table 1 shows the number of panelists who marked each item within 1 cm from the left end (the distance that the brush could be moved from the crown to the side of the head: 80% or more of the total length).

Evaluation criteria for "levelness of gray hair after drying" Draw a 5cm-long straight line horizontally, and the left end of the straight line cannot be distinguished from white hair and black hair (or brown hair) at all, and the right end is "white hair and black hair (or brown hair)" ) Can be clearly distinguished. ”Based on the ratio of the scale of the presence of gray hair after dyeing to the presence of gray hair before hair dyeing, it is determined by how many cm from the left end of this straight line, Was evaluated for levelness of gray hair. Table 1 shows the number of panelists who marked within 1 cm from the left end of each item (the amount of white hair: the amount of white hair after drying was 20% or less of the total) as “leveling property of white hair”.

(Evaluation method for equal ratio dischargeability)
Immediately after filling the aerosol container of the type in which the first agent composition and the second agent composition are discharged from different discharge ports, they were immersed in a 30 ° C or 10 ° C water bath. Thirty minutes after the start of the immersion, the aerosol container was taken out of the water bath, the hair dye composition was discharged, and the cream-like first and second agent compositions were separated.
Here, the discharge start time immediately after being taken out of the water bath is defined as T _1, and the discharge masses of the first agent composition and the second agent composition when discharged for 5 seconds from T ₁ are respectively defined as M ₁ and N ₁ , and N ₁ and a discharge amount ratio R ₁ the ratio of M ₁ with respect to _1. Then, T ₁ from discharging again 5 seconds T ₂ of the post 2 minutes, discharged the mass of the first composition and the second composition at that time a and M ₂ and N _2, respectively, for N ₂ of M ₂ and the ratio between the discharge amount ratio R _2. That is, _assuming that the respective ejection masses of the first agent composition and the second agent composition ejected for 5 seconds at the ejection start time T _n are M _n and N _n , the ejection amount ratio R _n is calculated according to the following equation (10). Can be calculated.
_{(R n) = (M n} ) / (N n) (10)
When the discharge amount ratio (R _n ) is in the range from the lower limit of 1−0.33 (ie, 0.67) to the upper limit of 1 + 0.50 (ie, 1.50), a sufficient hair dyeing effect can be exerted as a hair dye, so It is assumed that the case of the inside is an equal ratio state.

  The ejection amount ratio R of the first agent composition and the second agent composition was in the range of 0.97 to 1.39, and all were within the range defined by the equi-ratio state. That is, the ejection amount of the first agent and the ejection amount of the second agent were in an equal ratio state.

10 Brushes for hair treatment agents
11 Brush stand
11a Top
11b Base
11c base
11d Flexible base
11e recess
12 Outer brush teeth
12a outer brush teeth
13 Inside brush teeth
13a inner brush tooth
13b Tip
14 Intermediate brush teeth
14a Intermediate brush tooth
15 End brush teeth
15a end brush teeth
20 Hair treatment tools
21 Comb
22 Brush section
23 Mini brush section
24 Handle
25 Substrate
30a First-part composition
30b Second agent composition X Length direction of brush base Y Width direction of brush base Z Direction perpendicular to base of brush base M Direction of moving brush for hair treatment agent

Claims (15)

An aerosol-type hair dye kit comprising a first part composition for aerosol hair dye, a second part composition for aerosol hair dye, and a brush for a hair treatment agent,
The first agent composition for aerosol hair dye contains the following components (1A) to (1F),
(1A) Cationic surfactant
(1B) Nonionic surfactant
(1C) Higher alcohol
(1D) Oils that are liquid at 25 ° C
(1E) Oxidation dye intermediate
(1F) Alkali agent The second agent composition for aerosol hair dye contains the following components (2A) to (2D),
(2A) Hydrogen peroxide
(2B) Nonionic surfactant
(2C) Higher alcohol
(2D) Hydrocarbon hair treatment agent brushes are provided along side edges on both sides in the width direction of the brush stand, and a plurality of the brushes are arranged at predetermined intervals in the length direction of the brush stand. An outer brush tooth row composed of outer brush teeth, and a plurality of inner brush teeth provided adjacent to the inner side of the outer brush teeth in the width direction and arranged at predetermined intervals in the length direction. And an inner brush tooth row, wherein the height of the tip of the inner brush tooth in a direction perpendicular to the base surface of the brush base is lower than the height of the tip of the outer brush tooth. are, tensile modulus of the inner brush teeth is lower than tensile modulus of the outer brush teeth,
Aerosol hair dye kit.   The aerosol-type hair dye kit according to claim 1, wherein the inner brush teeth and the outer brush teeth are arranged in a staggered manner.   The outer brush teeth are formed using a polyethylene resin, a polypropylene resin or an ABS resin (acrylonitrile-butadiene-styrene copolymer resin), and the inner brush teeth are formed using an elastomer. The aerosol-type hair dye kit according to 1. The aerosol-type hair dye kit according to any one of claims 1 to 3, wherein a cross-sectional dimension of a root portion of the inner brush tooth and the outer brush tooth is 1 to 5 mm. The aerosol dyeing dye according to any one of claims 1 to 4 , wherein the mass ratio (1D) / (1C) of the component (1D) to the component (1C) in the first agent composition is 0.16 or more and 2.2 or less. Hair kit. The aerosol-type hair dye kit according to any one of claims 1 to 5 , wherein the component (1C) is a higher alcohol represented by the following general formula (6).
R ⁹ -OH (6)
[In the formula, R ⁹ represents a linear or branched alkyl or alkenyl group having 12 to 24 carbon atoms. ] Component (1C) has the general formula (6) R ⁹ is R ⁹ of a higher alcohol and the general formula (6) in a linear alkyl group of less than 20 12 or more carbon atoms is several 20 or 24 carbon atoms in the straight- The aerosol-type hair dye kit according to claim 6 , which is a combination of a higher alcohol that is a chain alkyl group. The aerosol-type hair dye kit according to any one of claims 1 to 7 , wherein the content of the component (1C) in the first agent composition is 0.1% by mass or more and 10% by mass or less. The total mass ratio of the components (2C) and (2D) to the component (2B) in the second agent composition [(2C) + (2D)] / (2B) is 1.0 or more and 3.5 or less, and the component (2C) The aerosol-type hair dye kit according to any one of claims 1 to 8 , wherein a mass ratio (2D) / (2C) of the component (2D) to (A) is 1.2 or more and 2.2 or less. The aerosol-type hair dye kit according to any one of claims 1 to 9 , wherein the component (2B) is a polyoxyethylene alkyl or alkenyl ether represented by the following general formula (8).
R ¹⁰ -O- (CH ₂ CH ₂ -O) _m -H (8)
[In the formula, R ¹⁰ represents a linear or branched saturated or unsaturated alkyl or alkenyl group having 8 to 22 carbon atoms, and m represents a number of 1 to 100 on average. ] Component (2B) is a polyoxyethylene alkyl or alkenyl ether in which m in the general formula (8) is 1 or more and less than 30 and a polyoxyethylene alkyl or alkenyl in which m in the general formula (8) is 30 or more and 100 or less. 11. The aerosol-type hair dye kit according to claim 10 , which is a combination with ether. The aerosol-type hair dye kit according to any one of claims 1 to 11 , wherein the content of the component (2B) in the second agent composition is 0.5% by mass or more and 15% by mass or less. The aerosol-type hair dye kit according to any one of claims 1 to 12 , wherein the component (2C) is a higher alcohol represented by the following general formula (9).
R ¹¹ -OH (9)
[In the formula, R ¹¹ represents a linear or branched alkyl or alkenyl group having 12 to 24 carbon atoms. ] Component (2C) is a higher alcohol in which R ¹¹ in general formula (9) is a linear alkyl group having 12 to less than 20 carbon atoms and R ^{11 in} general formula (9) having 20 to 24 carbon atoms. 14. The aerosol-type hair dye kit according to claim 13 , which is a combination of a higher alcohol that is a linear alkyl group. The aerosol-type hair dye kit according to any one of claims 1 to 14 , wherein the content of the component (2C) in the second agent composition is from 0.5% by mass to 30% by mass.