JP2015229668A - Hair dye composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair dye composition in which a cationic surfactant and a dissociative azo dye are stably blended and which can give the hair after hair dying an excellent feeling such as smoothness.SOLUTION: A hair dye composition comprises a specific azo dye represented by formula (A-1), (A-2) or (A-3), a cationic surfactant, and an anion surfactant.

Description

  The present invention relates to a hair dye composition and a hair dyeing method using the same.

  Hair dyes are classified according to the dye used or whether they have a melanin decolorization effect. Typical examples include a two-part permanent hair dye, an organic acid or an alkali agent, an acid dye, a base comprising a first agent containing an alkali agent and an oxidation dye, and a second agent containing an oxidation agent. One-part semi-permanent hair dyes containing direct dyes such as sex dyes and nitro dyes.

  However, direct dyes, when used in one-part semi-permanent hair dyes, are easily lost from the hair by washing and light and are therefore easily faded, which is noticeable in damaged hair.

  In addition, in a two-component permanent hair dye using an oxidizing agent, it has been attempted to use a direct dye such as a nitro dye or a basic dye in order to compensate for a less clear color tone due to the oxidizing dye. However, when a nitro dye is used, it is vivid immediately after hair dyeing, but there is a problem that the color fading with the passage of time is remarkable and the color is faint, and when a basic dye is used, an oxidizing agent is used. When mixed with hydrogen peroxide, there is a problem that it is easily decomposed.

  A hair dye using a dissociable azo dye having a dissociating proton as a direct dye has been proposed as a stable hair dye composition capable of clear hair dyeing that solves these problems (Patent Document 1). .

Japanese Patent Laid-Open No. 2003-342139

  The dissociable azo dye exhibits hair dyeability in a state where dissociable protons are dissociated under alkalinity. When this dissociable azo dye is used in combination with a cationic surfactant that improves the feel of the hair after dyeing, the azo dye that has become anionic by dissociating protons is poorly soluble in the cationic surfactant. Will form a salt. For this reason, precipitation occurs in the hair dye composition system at the time of blending, and in addition to the problem that the operability at the time of blending deteriorates and the appearance also deteriorates, it gives an excellent feel to the hair after dyeing at the time of use There was a problem that it was difficult to do.

  Therefore, in the present invention, the dissociable azo dye having excellent hair dyeing properties and the cationic surfactant having excellent hair feel after use are stably blended, and when applied to hair, the hair dye can be applied smoothly. It is related with the hair dye composition which can provide the touch (smoothness etc.) which was able to be performed to the hair after hair dyeing simultaneously.

  In the dissociable azo dye having a specific structure, the present invention provides a dissociation property even in the case of an alkaline solution containing a cationic surfactant, if an anionic surfactant is present under weakly alkaline or alkaline conditions. If the ratio of the cationic surfactant to the total amount of the azo dye and the anionic surfactant is less than a certain value, it can be blended stably without causing precipitation in the hair dye system, and is excellent for hair after hair dyeing. It was found that the touch can be imparted.

The present invention contains the following components (A), (B) and (C), and the mass ratio of the component (B) to the sum of the components (A) and (C) in the total composition (B) / A hair dye composition having [(A) + (C)] of 1.2 or less and a pH (25 ° C.) of 7.5 to 12 is provided.
(A): One or more azo dyes selected from the group consisting of (A-1), (A-2) and (A-3) below

(B): Cationic surfactant
(C): Anionic surfactant

  Furthermore, the present invention provides a hair dyeing method in which the above hair dye composition is applied to hair, left for 1 to 60 minutes, and then washed away.

  In the hair dye composition of the present invention, an azo dye and a cationic surfactant are stably blended, and an excellent feel (smoothness, etc.) can be imparted to the hair after hair dyeing.

[Component (A): Azo dye]
The hair dye composition of the present invention comprises, as component (A), one or more azo dyes selected from the group consisting of the following (A-1), (A-2) and (A-3) Containing.

  The pKa of the azo dyes (A-1), (A-2), and (A-3) are 6.0, 6.0, and 7.5, respectively. Therefore, in the hair dye composition of the present invention having a pH (25 ° C.) of 7.5 to 12, almost 80% or more of these azo dyes exist in an anionic state in which protons are dissociated. At that time, the azo dye (A-1) is red, (A-2) is blue, and (A-3) is yellow.

  The total content of these azo dyes in the total composition is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, and still more preferably 0.01% by mass, from the viewpoint of levelness of hair and stability of formulation. Or more, more preferably 0.02% by mass or more, further preferably 0.03% by mass or more, preferably 10% by mass or less, more preferably 5% by mass or less, still more preferably 3% by mass or less, and further preferably 2.5% by mass. % Or less, more preferably 2% by mass or less, further preferably 1.5% by mass or less, and further preferably 1% by mass or less. The hair dye composition of the present invention may be used in combination with a dye other than the azo dyes (A-1), (A-2) and (A-3). However, the total content of the azo dyes (A-1), (A-2) and (A-3) is 1% by mass or more in the total dyes from the viewpoint of not affecting the dyeability of the component (A). It is preferably 100% by mass or less, more preferably 5% by mass or more and 100% by mass or less, further 10% by mass or more and 100% by mass or less, and further preferably 20% by mass or more and 100% by mass or less.

[Other dyes]
The hair dye composition of the present invention can contain an oxidation dye intermediate or a direct dye other than the component (A) as the dye other than the component (A).

(Oxidized dye intermediate)
As the oxidation dye intermediate, known precursors and couplers usually used in hair dyes can be used. Examples of the precursor include paraphenylenediamine, toluene-2,5-diamine, orthochloroparaphenylenediamine, N-phenylparaphenylenediamine, N, N-bis (hydroxyethyl) paraphenylenediamine, and 3-methyl-4-amino. Phenol, 2-hydroxyethylparaphenylenediamine, paraaminophenol, paramethylaminophenol, 4-amino-methcresol, orthoaminophenol, and salts thereof can be mentioned.

  Examples of the coupler include resorcin, 2-methylresorcin, 1-naphthol, 1,5-dihydroxynaphthalene, 5-aminoorthocresol, metaphenylenediamine, orthoaminophenol, metaaminophenol, paraaminophenol, 2,4- Examples include diaminophenoxyethanol, 2,6-diaminopyridine, 2-methyl-5-hydroxyethylaminophenol, 2-amino-3-hydroxypyridine, and salts thereof.

  Two or more precursors and couplers may be used in combination, and the content of the precursor and coupler in the total composition is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, respectively. Is 5% by mass or less, more preferably 4% by mass or less, more preferably 3% by mass, still more preferably 2% by mass or less, still more preferably 1% by mass or less, and further preferably 0.5% by mass or less.

(Direct dye)
Examples of direct dyes include acid dyes, nitro dyes, disperse dyes, and basic dyes. More specifically, examples of the acid dye include blue No. 1, purple No. 401, black No. 401, orange color No. 205, red No. 227, red No. 106, yellow No. 203, acidic orange 3, etc., and nitro dyes As 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, and disperse dyes include disperse purple 1, disperse blue 1, disperse black 9 and the like, and basic dyes 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.

  Two or more direct dyes other than these components (A) may be used in combination, or may be used in combination with an oxidation dye intermediate. The direct dye in the total composition is preferably 0.001% by mass or more, more preferably 0.01% by mass or more, preferably 5% by mass or less, more preferably 3% by mass or less, and further preferably 2% by mass or less. More preferably, it is 1 mass% or less, More preferably, it is 0.5 mass% or less.

[Component (B): Cationic surfactant]
The hair dye composition of the present invention contains a cationic surfactant as component (B). As the cationic surfactant, one represented by the following general formula (1) can be used.

[Wherein R ¹ , R ² , R ³ and R ⁴ independently represent a hydrogen atom or a hydrocarbon group, and one or two of R ¹ , R ² , R ³ and R ⁴ have 8 carbon atoms. -36 hydrocarbon group, and the remainder is a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms. X ⁻ represents an anion. ]

  Here, examples of the hydrocarbon group include a linear or branched alkyl group, a linear or branched alkenyl group, an aryl group, and an aralkyl group.

One or two (preferably one) of R ¹ , R ² , R ³ and R ⁴ is a linear or branched carbon group having 8 to 30 carbon atoms, more preferably 10 to 24 carbon atoms, and even more carbon atoms. It is preferably an alkyl group having 12 to 18 carbon atoms, and the remainder is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, further an alkyl group having 1 or 2 carbon atoms, and further an alkyl group having 1 carbon atom. preferable.

  Examples of the anion include chloride ion, bromide ion, iodide ion, methyl sulfate ion, ethyl sulfate ion, acetate ion, phosphate ion, sulfate ion, lactate ion, and saccharin ion. To chloride and bromide ions are preferred.

  Component (B) is preferably monoalkyltrimethylammonium chloride, dialkyldimethylammonium chloride, monoalkyltrimethylammonium bromide, and stearyltrimethylammonium chloride, from the viewpoint of imparting an excellent feel to the hair after dyeing. (Steartrimonium chloride), cetyltrimethylammonium chloride (cetrimonium chloride), and lauryltrimethylammonium chloride (lauryltrimonium chloride) are more preferable, and it is also preferable to mix two or more.

  Two or more cationic surfactants can be used in combination. The content of the cationic surfactant in the total composition is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, and still more preferably 0.05% by mass from the viewpoint of imparting an excellent feel to the hair after dyeing. % Or more, preferably 20% by mass or less, more preferably 18% by mass or less, still more preferably 15% by mass or less, still more preferably 10% by mass or less, still more preferably 5% by mass or less, and further preferably 3%. It is not more than mass%, more preferably not more than 1.5 mass%.

[Component (C): Anionic surfactant]
The hair dye composition of the present invention contains an anionic surfactant as component (C). Anionic surfactants include sulfate surfactants such as alkyl sulfates and alkyl ether sulfates; carboxylic acid surfactants such as fatty acid salts, alkyl ether carboxylates, alkyl succinates or alkenyl succinate salts; alkyls Phosphate ester surfactants such as phosphates and alkyl ether phosphates; Sulfonic acid surfactants such as sulfosuccinates, isethionates, taurates, alkylbenzene sulfonic acids, α-olefin sulfonic acids, alkane sulfonic acids; Examples include amino acid derivative-type surfactants such as N-acyl glutamate.

  As the component (C), alkyl sulfates, polyoxyalkylene alkyl sulfates, fatty acid salts, and alkyl ether carboxylates are preferable from the viewpoint of stable blending without causing precipitation. As these preferable anionic surfactants, those represented by the following general formula (2) or (3) can be used.

R ⁵ —O— (CH ₂ CH ₂ O) _n1 — (CH ₂ CH (CH ₃ ) O) _m1 —SO ₃ X ¹ (2)
R ⁶ —O— (CH ₂ CH ₂ O) _n2 — (CH ₂ CH (CH ₃ ) O) _m2 —COOX ² (3)

[Wherein R ⁵ and R ⁶ are each a hydrocarbon group having 8 to 25 carbon atoms, n ¹ and n ² are each independently an average number of added moles of 0 to 50, and m ¹ and m ² are Each independently has an average added mole number of 0 to 50, and X ¹ and X ² are each independently an alkali metal or NH ₄ . ]

R ⁵ and R ⁶ in the general formulas (2) and (3) are each independently preferably 10 to 24 carbon atoms, more preferably carbon atoms, from the viewpoint of stably blending in the composition without causing precipitation. It is 12-22, More preferably, it is 14-22. R ⁵ and R ⁶ are each independently preferably a linear or branched alkyl group or alkenyl group, and more preferably a linear alkyl group.

In the general formulas (2) and (3), n ¹ and n ² are each independently preferably 1 or more, more preferably 2 or more, from the viewpoint of stably blending in the composition without causing precipitation. Further, it is preferably 45 or less, more preferably 30 or less, still more preferably 15 or less, still more preferably 10 or less, still more preferably 8 or less, still more preferably 6 or less.

M ¹ and m ² in the general formulas (2) and (3) are each independently preferably 30 or less, more preferably 10 or less, from the viewpoint of stably blending in the composition without causing precipitation, More preferably, it is 5 or less, and still more preferably 0.

Each of X ¹ and X ^{2 in} the general formulas (2) and (3) is a cationic group that forms a salt. Examples of the alkali metal include alkali metals such as sodium and potassium, triethanolamine, and ammonium. Of these, sodium and potassium are more preferred, and sodium is still more preferred.

  Two or more types of component (C) can be used in combination. The content of component (C) in the total composition is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, and further preferably 0.1% by mass from the viewpoint of stably blending in the composition without causing precipitation. More preferably, it is 0.2% by mass or more, preferably 20% by mass or less, more preferably 18% by mass or less, still more preferably 15% by mass or less, still more preferably 10% by mass or less, and further preferably 5% by mass. % Or less, more preferably 3% by mass or less, and further preferably 1% by mass or less.

  The mass ratio (B) / [(A) + (C)] of the component (B) with respect to the sum of the component (A) and the component (C) is stably blended in the composition and applied to the hair after dyeing. From the viewpoint of imparting an excellent feel, it is 1.2 or less, preferably 1 or less, more preferably 0.95 or less, further preferably 0.85 or less, further preferably 0.75 or less, and preferably 0.01 or more, more preferably 0.05. More preferably, it is 0.1 or more, more preferably 0.15 or more, more preferably 0.20 or more, still more preferably 0.25 or more, and further preferably 0.35 or more.

[Other surfactants]
In addition to the cationic surfactant of component (B) and the anionic surfactant of component (C), the hair dye composition of the present invention may contain a nonionic surfactant or an amphoteric surfactant. it can. Nonionic surfactants include polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, higher fatty acid sucrose ester, polyglycerin fatty acid ester, higher fatty acid mono- or diethanolamide, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan fatty acid Examples thereof include esters, polyoxyethylene sorbite fatty acid esters, alkyl saccharides, alkylamine oxides, and alkylamidoamine oxides. Of these, polyoxyalkylene alkyl ether, polyoxyethylene hydrogenated castor oil, and alkyl saccharide are preferred, and polyoxyethylene alkyl (12-14) ether and alkyl polyglucoside are more preferred.

  Examples of amphoteric surfactants include imidazoline series, carbobetaine series, amide betaine series, sulfobetaine series, hydroxysulfobetaine series, and amide sulfobetaine series.

  The nonionic surfactant and the amphoteric surfactant can be used alone or in combination of two or more. The total content in the total composition is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and still more preferably. It is 0.5% by mass or more, preferably 20% by mass or less, more preferably 18% by mass or less, further preferably 15% by mass or less, still more preferably 10% by mass or less, and further preferably 7.5% by mass or less.

[Alkaline agent]
The hair dye composition of the present invention may further contain an alkali agent. When the hair dye composition of the present invention is a two-part or three-part type, the alkaline agent is contained in the first agent. Alkaline agents such as ammonia and salts thereof; alkanolamines such as monoethanolamine, isopropanolamine, 2-amino-2-methylpropanol, 2-aminobutanol and salts thereof; alkanediamines such as 1,3-propanediamine and the like Salts: carbonates such as guanidine carbonate, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate and the like. Of the above alkaline agents, ammonia and salts thereof, monoethanolamine and salts thereof, and 2-amino-2-methylpropanol are preferable.

  Two or more alkali agents may be used in combination, and the content in the total composition is 0.01% by mass or more, further 0.05% by mass or more, and further 0.1% by mass or more from the viewpoint of sufficient hair dyeing effect. Further, it is preferably 0.2% by mass or more, more preferably 0.5% by mass or more, and from the viewpoint of reducing hair damage and scalp irritation, it is 20% by mass or less, further 10% by mass or less, further 5% by mass or less, Is preferably 4% by mass or less.

[PH]
The pH (25 ° C.) of the hair dye composition of the present invention is 7.5 or more at the time of use (during mixing in the case of two-part or three-part type) from the viewpoint of good hair dyeing effect and skin irritation suppression. Yes, preferably 8 or more, more preferably 8.5 or more, further preferably 9 or more, and 12 or less, preferably 11.5 or less, more preferably 11 or less, and further preferably 10.5 or less. As the pH adjuster, 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, phosphorous such as dipotassium dihydrogen phosphate, disodium monohydrogen phosphate, etc. Examples include acid salts. In the present specification, the pH of the hair dye composition is a value measured at room temperature (25 ° C.) using a pH meter F-22 manufactured by Horiba, Ltd.

〔Oxidant〕
When the hair dye composition of the present invention is a two-part or three-part type, the second agent contains an oxidizing agent. In this case, dyeing and decoloring are performed simultaneously, and a more vivid dyeing is obtained. The dissociative azo dye used in the present invention is extremely stable against an oxidizing agent.

  Examples of the oxidizing agent include hydrogen peroxide; persulfates such as ammonium persulfate, potassium persulfate, and sodium persulfate; perborates such as sodium perborate; percarbonates such as sodium percarbonate; sodium bromate; And bromates such as potassium bromate. Among these, hydrogen peroxide is preferable from the viewpoint of decolorization to hair and the stability and effectiveness of the oxidizing agent itself. In addition to hydrogen peroxide, other oxidizing agents can be used in combination as an oxidizing aid. Of these, it is preferable to use a combination of hydrogen peroxide and persulfate.

  When the oxidizing agent is used, the oxidizing agent can be used alone or in combination of two or more, and the content in the total composition is preferably 0.5% by mass or more, more preferably 1% by mass or more, Preferably it is 30 mass% or less, More preferably, it is 20 mass% or less, More preferably, it is 15 mass% or less, More preferably, it is 10 mass% or less, More preferably, it is 8 mass% or less, More preferably, it is 6 mass% or less. When hydrogen peroxide and persulfate are used in combination, the hydrogen peroxide content is 0.5% by mass or more and 10% by mass or less in the total composition, and the persulfate content is in the total composition. It is preferably 0.5% by mass or more and 25% by mass or less, and the total content of both is preferably 1% by mass or more and 30% by mass or less.

[Conditioning ingredients]
The hair dye composition of the present invention can contain a conditioning component suitable for application to hair. The conditioning component is a polymer or oil that can be dissolved or dispersed in the hair dye composition, and adheres to the hair when the hair dye composition is washed away or diluted with water or shampoo. When the conditioning component is used, the content in the total composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, and preferably 30% by mass or less, more preferably Is 20% by mass or less, more preferably 10% by mass or less, and still more preferably 5% by mass or less.

  The hair dye composition of the present invention can contain a conditioning component suitable for application to hair. The conditioning component is a polymer or oil that can be dissolved or dispersed in the hair dye composition, and adheres to the hair when the hair dye composition is washed away or diluted with water or shampoo.

  Suitable conditioning components for use in the hair dye composition of the present invention include cationic polymers, silicones (eg, silicone oils, cationic silicones, silicone gums, silicone resins), organic conditioning oils (eg, hydrocarbon oils, Polyolefin, fatty acid ester), aliphatic amide, polyalkylene glycol and the like.

  These conditioning components can be used alone or in combination of two or more, and the content in the total composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and still more preferably 0.5%. It is at least 20% by mass, preferably at most 20% by mass, more preferably at most 15% by mass, still more preferably at most 5% by mass.

[Higher alcohol]
The hair dye composition of the present invention preferably contains a higher alcohol from the viewpoints of improved touch and stability. The inclusion of the higher alcohol has the effect of forming a structure with the surfactant to prevent separation of the hair dye composition and improving the feel during rinsing.

  As the higher alcohol, those having 8 to 22 carbon atoms are preferable, and those having 16 to 22 carbon atoms are more preferable. Specific examples include cetyl alcohol, stearyl alcohol, behenyl alcohol, and the like, and mixtures thereof.

  Two or more higher alcohols may be used in combination, and the content in the total composition is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, still more preferably 1% by mass or more, and further preferably 3% by mass. % Or more, preferably 20% by mass or less, more preferably 10% by mass or less, and still more preferably 6% by mass or less.

(Water-soluble polymer)
The hair dye composition of the present invention may contain a water-soluble polymer for the purpose of preventing sagging during use and preventing staining on the scalp. Examples of water-soluble polymers include gum arabic, carrageenan, caraya gum, gum tragacanth, carob gum, quince seed (malmello), casein, dextrin, gelatin, sodium pectate, sodium alginate, methylcellulose, ethylcellulose, carboxymethylcellulose (CMC), hydroxyethylcellulose , Hydroxypropyl cellulose, polyvinyl alcohol (PVA), polyvinyl methyl ether (PVM), polyvinyl pyrrolidone (PVP), sodium polyacrylate, locust bean gum, guar gum, tamarint gum, dialkyldimethylammonium sulfate cellulose, xanthan gum, modified xanthan gum, welan gum, Labor gum, gellan gum, carboxyvinyl polymer, acrylic acid / metac Le ester copolymers, partially crosslinked products by 1,9 decadiene methyl vinyl ether / maleic anhydride copolymer, polyethylene glycol, magnesium aluminum silicate, bentonite and the like. Of these, hydroxyethyl cellulose, xanthan gum, and modified xanthan gum are preferred.

  These water-soluble polymers can be used alone or in combination of two or more, and the content in the whole composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, Preferably it is 10 mass% or less, More preferably, it is 5 mass% or less.

[Other optional ingredients]
In addition to the above components, other components that are usually used as cosmetic raw materials can be added to the hair dye composition of the present invention.

  Examples of the purpose of blending such optional components include pearling, antiseptic, metal sequestering, stabilization, antioxidant, ultraviolet absorption, moisture retention, product coloring, fragrance, etc. As specific optional components, Examples include animal and vegetable oils and fats, higher fatty acids, protein hydrolysates, protein derivatives, amino acids, plant extracts, vitamins, pigments, and fragrances.

[Medium]
In the hair dye composition of the present invention, water and, if necessary, an organic solvent are used as a medium. Examples of organic solvents include lower aliphatic alcohols such as ethanol, propanol and isopropanol; aromatic alcohols such as benzyl alcohol and benzyloxyethanol; polyols such as propylene glycol, 1,3-butanediol, diethylene glycol and glycerin; Cellosolves such as cellosolve and butylcellosolve; and carbitols such as ethylcarbitol and butylcarbitol.

  The water content in the total composition is preferably 60% by mass or more, more preferably 70% by mass or more, still more preferably 80% by mass or more, and preferably 99% by mass or less, more preferably 98% by mass. Hereinafter, it is more preferably 95% by mass or less. The content of the organic solvent in the total composition is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, still more preferably 0.5% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass. % Or less, more preferably 10% by mass or less.

[Drug type]
The hair dye composition of the present invention can be used as various one-part, two-part, or three-part hair dyes. The one-pack hair dye composition comprises a single agent containing component (A). The two-component hair dye composition preferably comprises a first agent containing component (A) and an alkaline agent, and a second agent containing hydrogen peroxide. The three-component hair dye composition comprises a first agent containing a direct dye and an alkali agent other than component (A), a second agent containing hydrogen peroxide, and a third agent containing component (A). Or a first agent containing component (A) and an alkali agent, a second agent containing hydrogen peroxide, and a third agent containing other components. As the third agent containing the above-mentioned other components, a powdery oxidizer made of a granulated material such as persulfate (ammonium persulfate, potassium persulfate, sodium persulfate, etc.) may be used to improve decolorization power. preferable.
In the present invention, the “total composition” refers to the entire composition at the time of use of the hair dyeing treatment. In the above-mentioned two-component hair dye, after mixing the first agent and the second agent In the case of a three-part hair dye, it means a mixture after mixing the first agent, the second agent and the third agent.

  The hair dye composition of the present invention can be used in the form of, for example, a liquid, an emulsion, a cream, a gel, a paste, a mousse, or an aerosol. It is desirable to adjust the viscosity of the entire composition in these cases so that it does not easily drip when applied to the hair. The viscosity (25 ° C.) of this whole composition was rotated at 10 rpm for 1 minute using a rotor TC by a B-type rotational viscometer with a helical stand (model; digital viscometer TVB-10, Toki Sangyo Co., Ltd.). The subsequent measured value is preferably 2,000 to 200,000 mPa · s, more preferably 4,000 to 150,000 mPa · s, still more preferably 6,000 to 100,000 mPa · s, and further preferably 8,000 to 80,000 mPa · s. In addition, in the case of a two-part type or a three-part type, the measurement shall be made after 3 minutes have elapsed since the mixing of each agent.

  Moreover, the hair dye composition of this invention can also be used as foam form by making it discharge from a non-aerosol-type former container when apply | coating to hair, or it shakes and foams in a cup. In this case, the viscosity of the entire composition before foaming is also preferably adjusted so that it does not easily drip when applied to the hair as a foam. The viscosity (25 ° C.) of this entire composition was rotated for 1 minute at 30 rpm using a rotor No. 1 with a B-type rotational viscometer (model; Digital Viscometer TV-10, Toki Sangyo Co., Ltd.). The measured value (however, when the viscosity exceeds 160 mPa · s, the measured value after rotating for 1 minute at 12 rpm) is preferably 1 to 800 mPa · s, more preferably 1 to 600 mPa · s, still more preferably 1 to 500 mPa · s, more preferably 1 to 300 mPa · s. In addition, in the case of a two-part type or a three-part type, the measurement shall be made after 3 minutes have elapsed since the mixing of each agent.

[Method for producing hair dye composition]
When the hair dye composition of the present invention is a one-pack type, from the viewpoint of the stability of the hair dye composition, after mixing component (B) and component (C), the resulting mixture and component (A) It is preferable to prepare by mixing. Further, when the hair dye composition of the present invention is a two-part or three-part type and contains all of the components (A) to (C) in the first agent, the first agent is also a hair dye. From the viewpoint of the stability of the agent composition, it is preferable to prepare by mixing the component (B) and the component (C) and then mixing the resulting mixture and the component (A).

[Hair dyeing method]
For hair dyeing treatment using the hair dye composition of the present invention, for example, the hair dye composition of the present invention (first agent and second agent in the case of two agents, first in the case of three agents). After mixing the agent, the second agent, and the third agent immediately before use, it is applied to the hair, left standing for a predetermined time, washed away with water, and dried. The application temperature to the hair is preferably 15 to 45 ° C., the application time is 1 to 60 minutes, more preferably 5 to 45 minutes, and further preferably 10 to 30 minutes. In this case, first, the hair dye is lightly washed with water, then washed with a shampoo containing an anionic surfactant, and then washed with water, the cationic polymer flows out moderately, and the silicones remain in the hair moderately. And a good conditioning effect. As the shampoo, a general aqueous shampoo containing about 5 to 20% by mass of an anionic surfactant such as sodium laureth-1 sulfate, sodium laureth-2 sulfate, or sodium laureth-3 sulfate is suitable.

  With respect to the embodiments described above, preferred aspects of the present invention will be further disclosed below.

<1> Contains the following components (A), (B) and (C), and the mass ratio (B) / [of the component (B) to the total of the components (A) and (C) in the total composition (A) + (C)] is 1.2 or less, and the hair dye composition has a pH (25 ° C.) of 7.5 to 12.
(A): One or more azo dyes selected from the group consisting of (A-1), (A-2) and (A-3) below

(B): Cationic surfactant
(C): Anionic surfactant

<2> The content of component (A) in the total composition is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, still more preferably 0.01% by mass or more, still more preferably 0.02% by mass or more, more preferably 0.03% by mass or more, 10% by mass or less, more preferably 5% by mass or less, further preferably 3% by mass or less, further preferably 2.5% by mass or less, still more preferably 2% by mass or less, and further preferably 1.5% by mass. The hair dye composition according to <1>, wherein the hair dye composition is 1% by mass or less, more preferably 1% by mass or less.

<3> The hair dye composition according to <1> or <2>, wherein the component (B) is preferably a cationic surfactant represented by the following general formula (1).

[Wherein R ¹ , R ² , R ³ and R ⁴ each independently represent a hydrogen atom or a hydrocarbon group, and one or two of R ¹ , R ² , R ³ and R ⁴ are the number of carbon atoms. It is an 8-36 hydrocarbon group, and the remainder is a hydrogen atom or a C1-C4 hydrocarbon group. X ⁻ represents an anion. ]

<4> The hair dye composition according to <3>, wherein the component (B) is one or more selected from the group consisting of stearyltrimethylammonium chloride, cetyltrimethylammonium chloride, and lauryltrimethylammonium chloride. .

<5> The content of the component (B) in the total composition is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, still more preferably 0.05% by mass or more, and preferably 20% by mass or less. More preferably, it is 18 mass% or less, More preferably, it is 15 mass% or less, More preferably, it is 10 mass% or less, More preferably, it is 5 mass% or less, More preferably, it is 3 mass% or less, More preferably, it is 1.5 mass% or less. The hair dye composition as described in any one of <1>-<4>.

<6> The hair dye composition according to any one of <1> to <5>, wherein the component (C) is preferably represented by the following general formula (2) or (3).
R ⁵ —O— (CH ₂ CH ₂ O) _n1 — (CH ₂ CH (CH ₃ ) O) _m1 —SO ₃ X ¹ (2)
R ⁶ —O— (CH ₂ CH ₂ O) _n2 — (CH ₂ CH (CH ₃ ) O) _m2 —COOX ² (3)
[Wherein, R ⁵ and R ⁶ are each independently a hydrocarbon group having 8 to 25 carbon atoms, n ¹ and n ² are each independently an average number of added moles of 0 to 50, m ¹ and m ² each independently has an average addition mole number of 0 to 50, and X ¹ and X ² are each independently an alkali metal or NH ₄ . ]

<7> The component (C) is preferably one or more selected from the group consisting of alkyl sulfates, polyoxyalkylene alkyl sulfates, fatty acid salts, and alkyl ether carboxylates. The hair dye composition as described.

<8> The content of the component (C) in the total composition is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, further preferably 0.1% by mass or more, and further preferably 0.2% by mass or more. , Preferably 20% by mass or less, more preferably 18% by mass or less, further preferably 15% by mass or less, further preferably 10% by mass or less, still more preferably 5% by mass or less, still more preferably 3% by mass or less, still more preferably. Is 1 mass% or less, The hair dye composition as described in any one of <1>-<7>.

<9> The mass ratio (B) / [(A) + (C)] of component (B) to the sum of component (A) and component (C) in the total composition is preferably 1 or less, more preferably 0.95 or less, more preferably 0.85 or less, further preferably 0.75 or less, preferably 0.01 or more, more preferably 0.05 or more, still more preferably 0.1 or more, still more preferably 0.15 or more, still more preferably 0.20 or more, and further preferably Is 0.25 or more, more preferably 0.35 or more, The hair dye composition as described in any one of <1>-<8>.

<10> The hair dye composition according to any one of <1> to <9>, preferably further containing an alkali agent.

<11> The hair dye according to <10>, which contains at least one selected from the group consisting of ammonia and salts thereof, monoethanolamine and salts thereof, and 2-amino-2-methylpropanol as an alkaline agent. Composition.

<12> The content of the alkali agent in the total 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, further preferably 0.2% by mass or more, and further 0.5% by mass. The dyeing according to <10> or <11>, which is preferably 20% by mass or less, more preferably 10% by mass or less, further preferably 5% by mass or less, and further preferably 4% by mass or less. Hair composition.

<13> A hair dye composition according to any one of <1> to <12>, which is a two-part hair dye or a three-part hair dye, and preferably contains an oxidizing agent in the second agent. object.

<14> The content of the oxidizing agent in the total composition is preferably 0.5% by mass or more, more preferably 1% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, and still more preferably. Is 15% by mass or less, more preferably 10% by mass or less, more preferably 8% by mass or less, and further preferably 6% by mass or less.

<15> In use, the pH at 25 ° C. is preferably 8 or more, more preferably 8.5 or more, still more preferably 9 or more, preferably 11.5 or less, more preferably 11 or less, still more preferably 10.5 or less. The hair dye composition according to any one of <1> to <14>, wherein

<16> A hair dyeing method in which the hair dye composition according to any one of <1> to <15> is applied to hair, left standing for 1 to 60 minutes, and then washed away.

Examples 1-6 and Comparative Examples 1-2
The 1st agent and 2nd agent of the composition shown in Table 1 were prepared by the conventional method. The first agent and the second agent were mixed at a mixing ratio (mass ratio) of 1: 1. The resulting mixture was applied to Chinese white hair at 30 ° C. and allowed to act for 30 minutes after application. This Chinese white hair was rinsed with water for 30 seconds.
Various evaluations were performed by the following methods, and the results are shown in Table 1.

[Stability of hair dye composition]
Evaluation of the stability of the hair dye composition was confirmed by visual observation according to the following criteria immediately after mixing the first agent and the second agent.
3: There is no precipitate and it is transparent 2: There is no precipitate but it is cloudy 1: There is a precipitate

[Hair feel during rinsing]
Evaluation of the feel of the hair at the time of rinsing was performed according to the following criteria, based on the feel at the time of rinsing with water 30 minutes after the hair dye composition was applied to the hair.
5: Smooth 4: Slightly smooth 3: Neither can be said 2: Slightly not smooth 1: Not smooth

Examples 7-10
A one-component hair dye composition having the composition shown in Table 2 was prepared by the following method. This one-part hair dye composition was applied to Chinese white hair at 30 ° C. and allowed to act for 30 minutes after application. This Chinese white hair was rinsed with water for 30 seconds.
[Method for preparing one-component hair dye composition]
After confirming that ammonium chloride and component (C) were blended and dissolved in purified water, component (B) was added, and the mixture was stirred for a certain period of time to prepare a mixed solution 1. Separately, a mixed solution 2 in which ammonia and component (A) were dissolved in purified water was prepared. And the liquid mixture 2 was mix | blended with the liquid mixture 1, and the one-component hair dye composition was obtained by stirring for a fixed time.
Various evaluations were performed by the following methods, and the results are shown in Table 2.

[Stability of hair dye composition]
The evaluation of the stability of the hair dye composition was confirmed by visual observation according to the following criteria immediately after the preparation of the one-component hair dye composition.
3: Clear with no precipitate 2: Slightly cloudy with no precipitate 1: Present with precipitate

[Hair feel during rinsing]
Evaluation of the feel of the hair at the time of rinsing was performed according to the following criteria by the feel of rinsing with water 30 minutes after applying the one-component hair dye composition to the hair.
5: Smooth 4: Slightly smooth 3: Neither can be said 2: Slightly not smooth 1: Not smooth

Claims (7)

Contains the following components (A), (B) and (C), and the mass ratio (B) / [(A) of component (B) to the sum of components (A) and (C) in the total composition + (C)] is 1.2 or less, and the hair dye composition has a pH (25 ° C.) of 7.5 to 12.
(A): One or more azo dyes selected from the group consisting of (A-1), (A-2) and (A-3) below

(B): Cationic surfactant
(C): Anionic surfactant The hair dye composition according to claim 1, wherein the component (B) is a cationic surfactant represented by the following general formula (1).

[Wherein R ¹ , R ² , R ³ and R ⁴ independently represent a hydrogen atom or a hydrocarbon group, and one or two of R ¹ , R ² , R ³ and R ⁴ have 8 carbon atoms. -36 hydrocarbon group, and the remainder is a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms. X ⁻ represents an anion. ]   The hair dye composition according to claim 1 or 2, wherein the content of the component (B) is 0.01% by mass or more and 20% by mass or less in the total composition.   The component (C) is one or two or more selected from the group consisting of alkyl sulfates, polyoxyalkylene alkyl sulfates, fatty acid salts, and alkyl ether carboxylates. The hair dye composition according to Item.   The hair dye composition according to any one of claims 1 to 4, wherein the content of the component (C) is 0.01% by mass or more and 20% by mass or less in the total composition.   The hair dye according to any one of claims 1 to 5, wherein the component (B) is one or more selected from the group consisting of stearyltrimethylammonium chloride, cetyltrimethylammonium chloride, and lauryltrimethylammonium chloride. Agent composition.   A hair dyeing method in which the hair dye composition according to any one of claims 1 to 6 is applied to hair, left standing for 1 to 60 minutes, and then washed away.