JP2015229669A - Hair dye composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair dye composition which stably contains a cationic surface active agent and a dissociative azo dye, has a good hair dyeing property, and can give an excellent feel to the hair after hair dyeing.SOLUTION: The invention provides a hair dye composition which contains components (A), (B), and (C), with a pH (25°C) of 7.5-12 when in use. (A): One or more kinds of azo dyes selected from following (A-1), (A-2), and (A-3). (B): A cationic surface active agent. (C): 0.1-8 mass% of at least one kind of alkali metal salt of an acid selected from hydrochloric acid, carbonic acid, and sulfuric acid.

Description

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

  Various direct dyes such as acid dyes, basic dyes, and nitro dyes are used as hair dyes, but in any case, the direct dye on the hair is lost relatively easily by washing and light. Therefore, it is easy to fade and this is considered to be remarkable in damaged hair.

  Therefore, various technical proposals have been made to deal with this problem. For example, a dissociable azo dye having a dissociable proton as a stable hair dye composition capable of clear hair dyeing and solving this problem. A hair dye using a direct dye as a dye has been proposed (Patent Document 1).

Japanese Patent Laid-Open No. 2003-342139

  Dissociable azo dyes are said to exhibit hair dyeability in the state where dissociable protons are dissociated under alkalinity. On the other hand, when hair is placed under alkaline conditions, the hair itself swells and proteins and lipids are absorbed from the inside. As a result of elution, hair damage is caused and the feel of the hair after using the hair dye is remarkably lowered. However, when a cationic surfactant that improves the feel of hair after using a hair dye is used in combination with the dissociable azo dye, the dissociable azo dye that has become anionic by dissociating protons is combined with the cationic surfactant. In addition to the problem that precipitation occurs in the hair dye composition system at the time of blending, and the operability at the time of blending is deteriorated and the appearance is deteriorated. In addition to not being able to impart a touch, there was a problem that the hair was easily washed out during rinsing and the hair dyeability was reduced.

  Therefore, in the present invention, the cationic surfactant and the dissociable azo dye are stably blended without forming a hardly soluble salt, have good hair dyeing properties, and are excellent for hair after hair dyeing. It is related with the hair dye composition which can provide the touch.

  In the dissociable azo dye having a specific structure, the alkali metal salt coexisting with the dissociable azo dye under alkalinity is hardly soluble even in the case of an alkaline solution containing a cationic surfactant. It has been found that it can be blended stably without forming a salt, has a vivid hair dyeing effect, and has an effect of imparting an excellent feel (especially an excellent feel during rinsing) to the hair after dyeing. .

The present invention provides a hair dye composition containing the following components (A), (B) and (C) and having a pH (25 ° C.) of 7.5 or more and 12 or less when used.
(A): One or more azo dyes selected from the group consisting of (A-1), (A-2) and (A-3) below

(B): Cationic surfactant
(C): at least one alkali metal salt of an acid selected from the group consisting of hydrochloric acid, carbonic acid and sulfuric acid 0.1% by mass to 8% by mass

  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 having a specific structure and a cationic surfactant are stably blended without forming a sparingly soluble salt. An excellent feel (particularly, an excellent feel when the agent is rinsed) can be imparted.

[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. When protons are dissociated, (A-1) is red, (A-2) is blue, and (A-3) is yellow.

  The total content of the azo dye in the total composition is preferably 0.005% by mass or more, more preferably 0.01% by mass or more, still more preferably 0.05% by mass or more, and further preferably 0.1% by mass, from the viewpoint of the stability of the formulation. % Or more, preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 2.5% by mass or less, still more 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.

[Oxidative dye]
When the hair dye composition of the present invention is a two-part or three-part type, in addition to the azo dye, an oxidation dye can be blended in the first agent. As an oxidation dye suitable for the hair dye composition of the present invention, known precursors and couplers that are usually used in hair dyes can be used.

  Examples of the precursor include paraphenylenediamine, toluene-2,5-diamine, 2-chloroparaphenylenediamine, paraaminophenol, paramethylaminophenol, orthoaminophenol, 2,4-diaminophenol, and N-phenylparaphenylenediamine. These salts are mentioned.

  Examples of couplers include metaphenylenediamine, 2,4-diaminophenoxyethanol, metaaminophenol, 2-methyl-5-aminophenol, 2-methyl-5- (2-hydroxyethylamino) phenol, resorcin, 1- Examples thereof include naphthol, 1,5-dihydroxynaphthalene, hydroquinone and their salts.

  The precursor and the coupler may be used alone or in combination of two or more, and the total content in the total composition may be a content that does not affect the dyeability of the azo dye. Preferably, it is 0.01% by mass or more, more preferably 0.1% by mass or more, preferably 5% 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, still more preferably. Is 0.5 mass% or less.

[Direct dyes other than component (A)]
The hair dye composition of the present invention may further contain a direct dye other than the azo dyes (A-1), (A-2), and (A-3). When the hair dye composition of the present invention is a two-component hair dye, a direct dye other than the azo dyes (A-1), (A-2), and (A-3) in the first agent Can be further blended. As this direct dye, known acid dyes, basic dyes, disperse dyes and the like that can be used in hair dyes can be used.

  Examples of the acid dye include Blue No. 1, Purple No. 401, Black No. 401, Orange No. 205, Red No. 227, Red No. 106, Yellow No. 203, and Acid Orange 3. Examples of the basic dye include basic blue 99, basic brown 16, basic brown 17, basic red 76, basic yellow 57, and the like.

  Examples of direct dyes other than acid dyes and basic dyes include 2-nitro-p-phenylenediamine, 2-amino-6-chloro-4-nitrophenol, 3-nitro-p-hydroxyethylaminophenol, and 4-nitro. -o-phenylenediamine, 4-amino-3-nitrophenol, 4-hydroxypropylamino-3-nitrophenol, N, N-bis (2-hydroxyethyl) -2-nitro-p-phenylenediamine, dispersed purple 1 , Dispersion blue 1, dispersion black 9, HC blue 2, HC orange 1, HC red 1, HC red 3, HC yellow 2, HC yellow 4, HC yellow 5, and the like.

  Direct dyes other than these azo dyes (A-1), (A-2), and (A-3) can be used alone or in combination of two or more, and the content in the total composition is , Preferably 0.001% by mass or more, more preferably 0.01% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, still more preferably 2% by mass or less, still more preferably 1% by 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 7 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 a 12-18 alkyl group, and the remainder is preferably 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. .

  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 lauryltrimethylammonium chloride from the viewpoint of imparting an excellent feel to the hair after dyeing. More preferred are cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, and behenyltrimethylammonium chloride, and mixtures thereof are also preferred.

  Two or more cationic surfactants can be used in combination. The content of the cationic surfactant in the total composition is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and further preferably 0.3% 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%, still more preferably not more than 1 mass%.

[Surfactants other than component (B)]
The hair dye composition of the present invention can contain a nonionic surfactant, an amphoteric surfactant, and an anionic surfactant as a surfactant other than the component (B).

  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, carbobetaine, amide betaine, sulfobetaine, hydroxysulfobetaine, amide sulfobetaine, and the like, and betaine surfactants such as alkyldimethylaminoacetic acid betaine and fatty acid amidopropyl betaine are more preferable. More preferred is amidopropyl betaine.

  Anionic surfactants include alkyl benzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, olefin sulfonates, alkane sulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, Examples include α-sulfo fatty acid salts, N-acyl amino acids, phosphoric acid mono- or diesters, and sulfosuccinic acid esters. Examples of the alkyl ether sulfate include polyoxyethylene alkyl ether sulfate. Counter ions of the anionic group of these anionic surfactants include alkali metal ions such as sodium ion and potassium ion; alkaline earth metal ions such as calcium ion and magnesium ion; ammonium ion; alkanol group having 2 or 3 carbon atoms Alkanolamines having 1 to 3 (for example, monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, etc.).

  Surfactants other than these components (B) can be used in combination of two or more, and the content in the total composition is preferably 0.1% by mass or more, more preferably from the viewpoint of good feel and emulsification performance. 0.2% by mass or more, more preferably 0.5% 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, still more preferably 10% by mass or less, still 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.

[Component (C): Alkali metal salt of hydrochloric acid, carbonic acid or sulfuric acid]
The hair dye composition of the present invention contains, as component (C), at least one alkali metal salt of an acid selected from the group consisting of hydrochloric acid, carbonic acid and sulfuric acid from the viewpoint of imparting a good feel during use. It is contained in an amount of 5% to 5% by mass.

  The alkali metal salt of hydrochloric acid, carbonic acid or sulfuric acid of component (C) is a compound in which part or all of the hydrogen atoms of hydrochloric acid, carbonic acid or sulfuric acid are substituted with an alkali metal. A potassium salt and a sodium salt are preferable from the viewpoint of touch when the hair is dried after the hair dyeing treatment. Specific examples include sodium chloride, potassium chloride, sodium carbonate, sodium hydrogen carbonate, potassium carbonate, potassium hydrogen carbonate, sodium sulfate, and potassium sulfate.

  These components (C) can also be used in combination of two or more, the content in the total composition is a viewpoint of stably blending the components (A) and (B) without forming a hardly soluble salt From 0.1% by mass, preferably 0.2% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.6% by mass or more, and 8% by mass from the viewpoint of the feel of the hair in a dry state. % Or less, preferably 6% by mass or less, more preferably 5% by mass or less, still more preferably 4% by mass or less, and further preferably 3% by mass or less.

  The mass ratio (B) / [(A) + (C)] of the component (B) to the sum of the components (A) and (C) in the total composition is from the viewpoint of improving dyeability and agent stability. , Preferably 0.01 or more, more preferably 0.05 or more, preferably 0.08 or more, more preferably 0.15 or more, preferably 6 or less, more preferably 4 or less, still more preferably 3 or less, still more preferably 1 or less, Preferably it is 0.9 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 include ammonia and salts thereof, sodium hydroxide, potassium hydroxide, monoethanolamine, isopropanolamine, 2-amino-2-methylpropanol, 2-aminobutanol and other alkanolamines and salts thereof, 1,3- Examples include alkanediamines such as propanediamine and salts thereof, and carbonates such as sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, and guanidine carbonate.

  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. Furthermore, 0.2% by mass or more is preferable, and from the viewpoint of reducing hair damage and scalp irritation, 20% by mass or less, further 10% by mass or less, further 5% by mass or less, and further 4% by mass or less are preferable. .

(PH adjuster)
In order to obtain a desired pH, the hair dye composition of the present invention includes an inorganic acid such as hydrochloric acid and phosphoric acid, an organic acid such as citric acid, glycolic acid, and lactic acid in addition to the alkaline agent as a pH adjuster. Etc. can be used.

〔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 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 whole composition is 0.1% by mass or more, further 0.5% by mass or more from the viewpoint of sufficient hair dyeing effect. Further, it is preferably 1.0% by mass or more, and from the viewpoint of reducing hair damage and scalp irritation, it is preferably 12.0% by mass or less, more preferably 9.0% by mass or less, and further preferably 6.0% by 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.

(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.

[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.

  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.

〔Organic solvent〕
The hair dye composition of the present invention may contain an organic solvent. Examples of organic solvents include lower alkanols such as ethanol, 1-propanol and 2-propanol, aromatic alcohols such as benzyl alcohol, 2-benzyloxyethanol and phenoxyethanol, propylene glycol, 1,3-butanediol, diethylene glycol and glycerin. Polyols, ether alcohols such as ethoxyethanol, ethoxydiglycol and methoxyethanol, N-alkylpyrrolidones such as N-methylpyrrolidone and N-ethylpyrrolidone; alkylene carbonates such as propylene carbonate; lactones such as γ-valerolactone and γ-caprolactone Is mentioned.

  These organic solvents can be used alone or in combination of two or more, and the content in the total composition is preferably 0.1% by mass or more, more preferably 1% by mass or more, and further preferably 2%. It is at least 35% by mass, preferably at most 35% by mass, more preferably at most 30% by mass, still more preferably at most 25% by mass.

[Medium]
In the hair dye composition of the present invention, water is used as a medium. The content of water in the hair dye composition is preferably 10% by mass or more, more preferably 20% by mass or more, further 30% by mass or more, further 40% by mass or more, and further preferably 50% by mass or more. It is preferably not more than mass%, more preferably not more than 90 mass%, and further preferably not more than 85 mass%.

[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.

[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 an alkaline agent, a second agent containing hydrogen peroxide, and a third agent containing component (A), or component (A) And a first agent containing 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, for example, in the form of liquid, emulsion, cream, gel, paste, mousse, etc., and can also be in the form of 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 measured value is preferably 2,000 to 100,000 mPa · s, more 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 still more preferably 8,000 to 80,000mPa · 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.

  The hair dye composition of the present invention can also be used in the form of foam by being discharged from a non-aerosol foamer container when applied to hair, or by shaking in a cup and foaming. 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.

[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 suppression of skin irritation. Preferably it is 8 or more, more preferably 8.5 or more, still more preferably 9 or more, and 12 or less, preferably 11.5 or less, more preferably 11 or less. When the hair dye composition of the present invention is a two-component hair dye, the pH of the first agent (25 ° C.) is 8 or more and 12 or less, and the pH of the second agent (25 ° C.) is 2 or more and 5 or less. Is preferred. In the present specification, the pH of the hair dye composition is a value measured at room temperature (25 ° C.) using a HORIBA pH meter F-22 and a HORIBA pH electrode 6367-10D.

[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 the components (A) and (C), and then mixing the resulting mixture and the component (B). 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, after mixing component (B) and component (C), the resulting mixture and component (A) are mixed, or component (A) and component (C) are mixed. After mixing, it is preferable to prepare by mixing the resulting mixture and component (B).
[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), the mixture is applied to the hair, left standing for a predetermined time, rinsed and dried. The hair dye composition of the present invention is applied in an amount of 0.1 to 10 times the hair mass, the application temperature to the hair is 15 to 45 ° C., the application time is 1 to 60 minutes, and further 3 to 45 minutes. Furthermore, 5 to 30 minutes are preferable.

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

<1> A hair dye composition comprising the following components (A), (B) and (C), and having a pH (25 ° C.) of 7.5 or more and 12 or less when used.
(A): One or more azo dyes selected from the group consisting of (A-1), (A-2) and (A-3) below

(B): Cationic surfactant
(C): At least one alkali metal salt of an acid selected from the group consisting of hydrochloric acid, carbonic acid and sulfuric acid 0.1% by mass to 5% by mass

<2> The total content of component (A) in the total composition is preferably 0.005% by mass or more, more preferably 0.01% by mass or more, still more preferably 0.05% by mass or more, and further preferably 0.1% by mass or more. The dye according to <1>, preferably 5% by mass or less, more preferably 3% by mass or less, further preferably 2.5% by mass or less, further preferably 1.5% by mass or less, and further preferably 1% by mass or less. Hair composition.

<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 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 7 carbon atoms. X ⁻ represents an anion. ]

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

<5> The content of the component (B) in the total composition is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, still more preferably 0.3% 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, More preferably Is 1 mass% or less, The hair dye composition as described in any one of <1>-<4>.

<6> Component (C) is preferably one or more selected from the group consisting of sodium chloride, potassium chloride, sodium carbonate, sodium hydrogen carbonate, potassium carbonate, potassium hydrogen carbonate, sodium sulfate, and potassium sulfate The hair dye composition according to any one of <1> to <5>.

<7> The content of the component (C) in the total composition is preferably 0.2% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.6% by mass or more, and preferably 6% by mass or less. More preferably, it is 5 mass% or less, More preferably, it is 4 mass% or less, More preferably, it is 3 mass% or less, The hair dye composition as described in any one of <1>-<6>.

<8> The mass ratio (B) / [(A) + (C)] of component (B) to the sum of component (A) and component (C) in the total composition is preferably 0.01 or more, more preferably 0.05 or more, preferably 0.08 or more, more preferably 0.15 or more, preferably 6 or less, more preferably 4 or less, further preferably 3 or less, still more preferably 1 or less, still more preferably 0.9 or less, <1 The hair dye composition according to any one of> to <7>.

<9> The hair dye composition according to any one of <1> to <8>, preferably further containing an alkali agent.

<10> 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, still more preferably 0.1% by mass or more, further preferably 0.2% by mass or more, and preferably The hair dye composition according to <9>, wherein is 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.

<11> The hair dye composition according to any one of <1> to <10>, which is a two-component or three-component hair dye, and preferably contains an oxidizing agent in the second agent.

<12> The content of the oxidizing agent in the total 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 12.0% by mass or less, more preferably Is 9.0 mass% or less, More preferably, it is 6.0 mass% or less, The hair dye composition as described in <11>.

<13> The pH at 25 ° C. is preferably 8 or more, more preferably 8.5 or more, still more preferably 9 or more, and preferably 11.5 or less, more preferably 11 or less in use. <1> Hair dye composition as described in any one of-<12>.

<14> A hair dyeing method in which the hair dye composition according to any one of <1> to <13> is applied to hair, left standing for 1 to 60 minutes, and then washed away.

Examples 1-5 and Comparative Examples 1-2
A hair dye composition (one-component hair dye) having the composition shown in Table 1 was prepared by the following method. About the obtained hair dye composition, the presence or absence of the precipitation at the time of a mixing | blending, dyeing | staining property, and the touch at the time of agent rinsing were evaluated by the following methods. These results are also shown in Table 1.
[Method for preparing hair dye composition]
After confirming that the component (C) is blended and dissolved in water, the component (B) is added, and the mixture is stirred for a predetermined time to prepare a mixed solution 1. Separately, a mixed solution 2 in which monoethanolamine and component (A-2) were dissolved in water was prepared. And the liquid mixture 2 was mix | blended with the liquid mixture 1, and the hair dye composition was obtained by stirring for a fixed time.

[Agent stability]
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

[Dyeability]
Apply the hair dye composition to 1g of Chinese white hair at a bath ratio (agent: hair) = 1: 1, leave it at 30 ° C for 20 minutes, rinse with water at about 40 ° C, and use a commercial shampoo. Washed and washed with water. Next, after applying a commercial hair rinse, it was rinsed with water at about 40 ° C., wiped with a towel, and dried with a dryer.
The color of the resulting hair bundle immediately after dyeing is measured with a CIE color system (L ^* , a ^* , b ^* ) using a color difference meter (manufactured by Konica Minolta Sensing Co., Ltd., color difference meter CR-400), The difference from the color before dyeing was determined by the following formula and was defined as dyeability ΔE ^* . The larger ΔE ^{*, the} better the dyeability.

[In the formula, L ^* ₀ , a ^* ₀ and b ^* ₀ represent the values of L ^* , a ^* and b ^* of the hair bundle before dyeing, respectively, L ^* ₁ , a ^* ₁ and b ^* ₁ are The values of L ^* , a ^* and b ^* immediately after staining are shown, respectively. ]

[Feel when rinsing]
A hair bundle having a width of 5 cm, a length of 23 cm, and a weight of 8 g was prepared using Western hair. Apply the hair dye composition to the hair bundle at a bath ratio (agent: hair) = 1: 1, leave it at 30 ° C. for 20 minutes, and then comb the fingering property when rinsing in water at about 40 ° C. It was measured with a force measuring machine. The Coming Force measuring machine hangs the hair bundle on the hook connected to the load cell, and uses two Denman brushes (Denman brush D-3 (total length: 204mm, number of rows: 7)) to sandwich the hair. This is a method to read the force detected by the load cell when the bundle is combed, and is a technique for quantitatively evaluating fingering (J. Soc. Cosmet. Chem., 37, 111-124 (May / June 1986) reference). The average value of the force detected by the load cell when the hair bundle was combed 10 times was defined as the coming force measurement value. It shows that it is excellent in the feel at the time of agent rinsing, so that a coming force (g) is small.

  As shown in Table 1, the hair dye compositions of Examples 1 to 5 are excellent in all of the agent stability, dyeability, and feel during agent rinsing, while Comparative Example 1 is in Example 1. Compared to Examples 5-5, the feel at the time of agent rinsing was inferior, and Comparative Example 2 was inferior to Examples 1-5 in all aspects of the agent stability, dyeability, and feel at the time of agent rinsing. .

Examples 6 to 10 and Comparative Examples 3 to 4
A first agent and a second agent of a hair dye composition (two-component hair dye) having the composition shown in Table 2 were prepared by the following method. The first agent is the same as the one-component hair dye shown in Table 1. Using the hair dye composition in which the first agent and the second agent shown in Table 2 were mixed at a ratio of 1: 1, the dyeability and the feel when rinsing the agent were evaluated in the same manner as described above. The evaluation results are also shown in Table 2.
[Method for preparing first agent]
After confirming that the component (C) was blended and dissolved in water, the component (B) was added, and the mixture was stirred for a certain time to prepare a mixed solution 1. Separately, a mixed solution 2 in which monoethanolamine and component (A-2) were dissolved in water was prepared. And the liquid mixture 2 was mix | blended with the liquid mixture 1, and the 1st agent was obtained by stirring for a fixed time.
[Method for preparing second agent]
Hydrogen peroxide and etidronic acid were mixed in water, and the second agent was obtained by stirring for a certain time.

  From the evaluation results of the stability as the first agent in Table 1 and the evaluation results in Table 2, the hair dye compositions of Examples 6 to 10 are excellent in all of the dyeability and the feel when rinsing the agent. On the other hand, the comparative example 3 was inferior in the point of the feel at the time of agent rinsing compared with Examples 6-10, and the comparative example 4 was inferior in the point of dyeability compared with Examples 6-10. .

Example 11 and Comparative Example 5
A hair dye composition (one-component hair dye) having the composition shown in Table 3 was prepared by the following method. The resulting hair dye composition was evaluated for agent stability, dyeability, and feel during agent rinsing in the same manner as described above. The evaluation results are also shown in Table 3.
[Method for preparing hair dye composition]
After confirming that ammonium chloride and component (C) were mixed and dissolved in water, component (B) was added, and the mixture was stirred for a certain period of time to prepare mixture 1. Separately, a mixed solution 2 in which ammonia and components (A-1) to (A-3) were dissolved in water was prepared. And the liquid mixture 2 was mix | blended with the liquid mixture 1, and the hair dye composition was obtained by stirring for a fixed time.

  As shown in Table 3, the hair dye composition of Example 11 is superior in all of agent stability, dyeability, and feel during agent rinsing, while Comparative Example 5 is more in comparison with Example 11. It was inferior in all aspects of agent stability, dyeability, and feel during agent rinsing.

Examples 12-17
A hair dye composition (one-component hair dye) having the composition shown in Table 4 was prepared by the following method. About the obtained hair dye composition, dyeing property and the presence or absence of the precipitation at the time of a mixing | blending were evaluated. The evaluation results are also shown in Table 4.
[Method for preparing hair dye composition]
After mixing ammonium chloride, alkyl glucoside and component (C) in water and confirming that they were dissolved, component (B) was added and stirred for a certain period of time to prepare mixture 1. Separately, a mixed solution 2 in which ammonia and the component (A-2) were dissolved in water was prepared. And the liquid mixture 2 was mix | blended with the liquid mixture 1, and the hair dye composition was obtained by stirring for a fixed time.

* 1: Cotamin 60W manufactured by Kao Corporation
* 2: Cotamin 24P manufactured by Kao Corporation
* 3 Myodoll 10 manufactured by Kao

Claims (6)

A hair dye composition comprising the following components (A), (B) and (C), and having a pH (25 ° C.) of 7.5 or more and 12 or less at the time of use.
(A): One or more azo dyes selected from the group consisting of (A-1), (A-2) and (A-3) below

(B): Cationic surfactant
(C): at least one alkali metal salt of an acid selected from the group consisting of hydrochloric acid, carbonic acid and sulfuric acid 0.1% by mass to 8% by mass 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, and the balance is 1-7 carbon atoms. X ⁻ represents an anion. ]   The hair dye according to claim 2, wherein the component (B) is one or more selected from the group consisting of lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, and behenyltrimethylammonium chloride. Composition.   The hair dye composition according to any one of claims 1 to 3, wherein the content of the component (B) is 0.05% by mass or more and 20% by mass or less in the entire composition.   The mass ratio (B) / [(A) + (C)] of the component (B) to the sum of the components (A) and (C) in the total composition is 0.01 or more and 6 or less. The hair dye composition according to any one of 4.   A hair dyeing method in which the hair dye composition according to any one of claims 1 to 5 is applied to hair, left for 1 to 60 minutes, and then washed away.