JP6063106B2 - Solid hair dye composition and hair dyeing method using the same - Google Patents

Description

  The present invention relates to a solid hair dye composition containing at least one selected from an oxidative dye and an oxidizer, and more specifically, a solid that has excellent hair dyeing power and can be dyed with a bright warm color tone. The present invention relates to a hair dye composition.

  Generally, as a hair cosmetic composition, for example, a hair dye composition composed of a first agent containing an oxidative dye and an alkaline agent and a second agent containing an oxidant is known. A 1st agent and a 2nd agent contain water, surfactant, etc., for example, and are comprised as cream form or liquid form. The first agent and the second agent are mixed at the time of use and then applied to the hair and used for hair dyeing treatment. A powder hair dye composition containing a powdery oxidant and a powdery oxidative dye is also known. Such a powder hair dye composition is mixed with water at the time of use, and then applied to the hair and used for hair dyeing treatment. The powder hair dye composition has a feature that it is easier to use than a creamy or liquid hair dye composition, and is excellent in handleability and portability.

  Conventionally, the powder hair dye composition disclosed by patent document 1 is known. The powder hair dye composition of Patent Document 1 uses perborate or percarbonate as an oxidizing agent and 2,4-diaminophenoxyethanol sulfate as a dye in order to enhance storage stability. Such a powder hair dye composition can be dyed into a deep black-brown color tone excellent in dyeability and fastness. On the other hand, in a hair dye composition, a nitro dye, which is a direct dye, has been conventionally used for dyeing hair in a warm color tone. However, the direct dye has a problem that the fastness after the hair dyeing treatment is inferior.

  Therefore, powder hair dye compositions disclosed in Patent Documents 2 and 3 are known. Patent Document 2 discloses at least one selected from p-phenylenediamine, toluene-2,5-diamine, 2-chloro-p-phenylenediamine and salts thereof as dyes, and 5-amino-2-methylphenol. , 5- (2-hydroxyamino) -2-methylphenol, 2,4-diaminophenoxyethanol, 2-amino-4-hydroxyethylaminoanisole, and a powder hair dye containing one or more selected from salts thereof A composition is disclosed. Patent Document 3 discloses that at least one selected from p-phenylenediamine, toluene-2,5-diamine, 2-chloro-p-phenylenediamine and salts thereof as a dye, 4-amino-3-methylphenol and One or more selected from the salts thereof, and a powder containing one or more selected from 5-amino-2-methylphenol, 5- (2-hydroxyethylamino) -2-methylphenol and salts thereof A hair dye composition is disclosed. The powder hair dye composition of Patent Document 2 can dye hair in a vivid color tone of blue to reddish purple having excellent fastness properties. The powder hair dye composition of Patent Document 3 is excellent in fastness and can dye hair in a bright color tone from orange to red to purple.

Japanese Patent Laid-Open No. 2001-253812 JP 2003-104856 A JP 2003-238369 A

  However, the powder hair dye composition of Patent Document 2 has a problem that it is difficult to express orange which is a warm color tone. In addition, in the powder hair dye composition of Patent Document 3, 4-amino-3-methylphenol contained as an essential dye has poor stability, particularly when it is present in one agent with an oxidizing agent. There is a problem that the desired color tone cannot be obtained (the hair dyeing power is reduced) in some cases.

  The present invention has been made by finding that the above problems can be solved by using a combination of a specific oxidation dye and an oxidant in a solid hair dye composition as a result of intensive studies by the present inventors. It is a thing. An object of the present invention is to provide a solid hair dye composition which is excellent in hair dyeing power and can be dyed with a bright warm color, and a hair dyeing method using the same.

In order to achieve the above object, in the solid hair dye composition according to claim 1, the composition contains (A) an oxidant and (B) an oxidative dye, and is used for dyeing hair in a warm color tone. In the solid hair dye composition, the (A) oxidizing agent is a percarbonate, and the (B) oxidizing dye is at least a dye intermediate, (B-1) p-phenylenediamine sulfate and toluene sulfate. -Solid hair dye composition comprising at least one selected from -2,5-diamine, (B-2) p-aminophenol sulfate, and (B-3) 5-amino-2-methylphenol sulfate. Is applied to the goat hair in the presence of a solvent, and the hair dyeing treatment is carried out, the difference in b ^* value between the pre-dyed and the goat hair after dyeing in the CIE L ^* a ^* b ^* color space display system (Δb) Is -14 or more, and the color change ΔE is 37.5. An upper, chroma C ^* is characterized by comprising 15 or more.

The invention according to claim 2 is the solid hair dye composition according to claim 1, wherein the percarbonate is sodium percarbonate.
The invention described in claim 3 is characterized in that, in the solid hair dye composition according to claim 1 or 2, the percarbonate is contained in an amount of 20 to 60% by mass.

  The invention according to claim 4 is the solid hair dye composition according to any one of claims 1 to 3, wherein (B-1) to (B-3) as the dye intermediates. The total content of the components is 1.0 to 30% by mass.

  The invention according to claim 5 is the solid hair dye composition according to any one of claims 1 to 4, wherein (B-1) to (B-3) as the dye intermediates. The mass ratio of the content of percarbonate to the total content of the components is 1.0 to 18.3.

The invention according to claim 6 is the solid hair dye composition according to any one of claims 1 to 5, wherein the solid hair dye composition is converted into goat hair in the presence of a solvent. coated, when dyed treated, the ^CIE L ^* a * ^{b *} color space display system, the difference between ^{a *} values of the goat hair after hair dyeing before and dyeing (.DELTA.a) is 12.5 or more Features.

  The invention according to claim 7 is the hair dyeing method using the solid hair dye composition according to any one of claims 1 to 6, wherein the solid hair dye composition is used as a solvent. It comprises a step of applying a hair dyeing treatment by applying to hair in the presence.

  According to the present invention, in a solid hair dye composition and a hair dyeing method using the same, it is excellent in hair dyeing power and can be dyed with a bright warm color tone.

Hereinafter, one embodiment which materialized the solid hair dye composition concerning the present invention is described in detail.
The solid hair dye composition of this embodiment comprises (A) a percarbonate as an oxidizing agent, and (B) at least (B-1) p-phenylenediamine sulfate and toluene-2,5-sulfate as an oxidizing dye. It is obtained by containing at least one selected from diamines, (B-2) p-aminophenol sulfate, and (B-3) 5-amino-2-methylphenol sulfate. The solid hair dye composition of this embodiment is used for dyeing hair in a warm color tone. The warm color tone is preferably CIE (International Lighting Commission: 1976) L ^* a ^* b ^* color space display system, for example, when the hair before hair dye is goat hair, ^* Value difference (Δa) is 12.5 or more, b ^* Value difference (Δb) is −14 or more, saturation C ^* is 15 or more, and color change ΔE is 37.5 or more. Show that. The a ^* value and b ^* value in the CIEL ^* a ^* b ^* color space display system are also defined in JISZ8729 and indicate an index representing an object in color. The a ^* value indicates the red direction, the b ^* value indicates the yellow direction, and becomes brighter as the absolute value of the numerical value increases. Saturation (C ^* ) indicates the vividness of the color, and becomes brighter as the value increases. The saturation (C ^* ) can be obtained by {(a ^* ) ² + (b ^* ) ² } ^1/2 . ΔE indicates a color difference and is a numerical value representing the degree of dyeing based on the color before hair dyeing. The larger the numerical value, the higher the hair dyeing power. ΔE can be obtained by {(ΔL) ² + (Δa) ² + (Δb) ² } ^1/2 . These can be easily measured by using a commercially available color difference meter (for example, a spectrocolorimeter CM-508d (standard light source D65) manufactured by Minolta).

  The solid hair dye composition refers to a hair dye composition in a state where a solvent, for example, water and an organic solvent are not blended as components in the hair dye composition. Therefore, as a specific method for using the solid hair dye composition, for example, a method in which the solid hair dye composition is dissolved in a solvent immediately before use and then applied to the hair, or hair in which a solvent has been previously applied. And a method of applying a solvent after adhering to hair. The compounding component (A) oxidizing agent and (B) oxidizing dye are solid (powder) at room temperature (25 ° C.). Thereby, even when (A) oxidizing agent and (B) oxidizing dye are blended in one agent at the same time, mutual reaction can be avoided, and handling and portability of the solid hair dye composition can be avoided. It can be significantly improved.

  (A) The percarbonate as an oxidizing agent decolorizes melanin contained in the hair and also oxidizes (B) the oxidizing dye as a dye to develop a color. Examples of the percarbonate include sodium percarbonate and potassium percarbonate. As the percarbonate, sodium percarbonate is preferably used. By using a percarbonate as the oxidizing agent, there is no risk of reducing the stability of the (B) oxidation dye even when stored in the same agent as the (B) oxidation dye. In addition, the hair can be brightly decolored in the hair dyeing treatment, and (B) the hair can be dyed in a bright warm color by the oxidative polymerization reaction of the oxidative dye.

  The content of the percarbonate in the solid hair dye composition is preferably 20 to 60% by mass, more preferably 25 to 60% by mass, and further preferably 30 to 55% by mass. When the content of percarbonate is less than 20% by mass, melanin may not be sufficiently decolored and the oxidation dye may not be sufficiently oxidized. Thereby, the hair dyeing power is reduced, and it may be difficult to perform the hair dyeing process with a vivid warm color tone. Even if the content of percarbonate exceeds 60% by mass, no further effect of improving the hair dyeing power can be obtained, and there is a possibility that problems such as damage to the hair may occur.

  (B) Oxidative dyes are compounds that can develop color due to (A) oxidative polymerization with an oxidizing agent, and are classified as dye intermediates and couplers. The solid hair dye composition of the present embodiment is at least one selected from (B-1) p-phenylenediamine sulfate and toluene-2,5-diamine sulfate as a sulfate of at least a dye intermediate, (B- 2) Contains p-aminophenol sulfate and (B-3) 5-amino-2-methylphenol sulfate. By using a combination of (B-1) to (B-3) as a sulfate of these dye intermediates, hair can be dyed in a bright warm color. Moreover, (A) Even when preserve | saved in one agent with an oxidizing agent, favorable stability can be exhibited and there is no possibility that a hair dyeing power may fall.

  The total content of the components (B-1) to (B-3) as the dye intermediate in the solid hair dye composition is preferably 1.0 to 30% by mass, more preferably 2.0 to It is 25.0 mass%, More preferably, it is 3.0-20.0 mass%. If the total content of the components (B-1) to (B-3) as the dye intermediate is less than 1.0% by mass, the hair dyeing power may be reduced. Even if the total content of the components (B-1) to (B-3) as the dye intermediate exceeds 30% by mass, no further effect of improving the hair dyeing power is obtained. The blending ratio of the components (B-1) to (B-3) is appropriately set depending on the desired color. For example, the total content of the component (B-2) and the component (B-3) with respect to the content of the component (B-1) is preferably 2 or more, more preferably 2.5 or more.

  The solid hair dye composition is listed in dyes other than the above oxidative dyes, for example, “Standard raw materials for quasi drugs” (published in June 2006, Yakuji Nippo) within a range that does not impair the effects of the present invention. In addition, at least one selected from dye intermediates and couplers as direct oxidation dyes and direct dyes may be appropriately contained. Examples of other dye intermediates include p-methylaminophenol, N, N-bis (2-hydroxyethyl) -p-phenylenediamine, 2-hydroxyethyl-p-phenylenediamine, and salts thereof. Moreover, p-phenylenediamine, toluene-2,5-diamine, and p-aminophenol are mentioned. Couplers develop color by binding to dye intermediates. Examples of the coupler include m-aminophenol, m-phenylenediamine, 2,4-diaminophenoxyethanol, 2,6-diaminopyridine, and salts thereof. Moreover, 5-amino-o-cresol is mentioned.

  Mass of content of percarbonate as (A) oxidizing agent with respect to total content of components (B-1) to (B-3) as (B) dye intermediate in solid hair dye composition The ratio (A / B) is preferably 1.0 to 18.3, more preferably 1.25 to 18.3. When the mass ratio (A / B) of the content of percarbonate to the total content of components (B-1) to (B-3) is less than 1.0, melanin cannot be sufficiently decolorized. In some cases, the hair dyeing process cannot be performed with a more vivid warm color tone. When the mass ratio (A / B) of the content of percarbonate to the total content of components (B-1) to (B-3) exceeds 18.3, the hair dyeing power may be reduced.

  If necessary, the solid hair dye composition may contain components other than those described above, such as water-soluble polymer compounds, oily components, polyhydric alcohols, surfactants, alkali agents, preservatives, polypeptides, pH adjustments. Agents, chelating agents, antioxidants, vitamins, fragrances, antistatic agents, hair softeners, excipients, pigments and UV absorbers may be included.

  As a water-soluble polymer compound, it mix | blends as a thickener and increases a viscosity, when a solid hair dye composition is mixed with the solvent. Therefore, the solid hair dye composition preferably contains a water-soluble polymer compound. Examples of water-soluble polymer compounds include xanthan gum, modified xanthan gum, guar gum, sodium alginate, tragacanth gum, locust bean gum, potato starch, ethyl cellulose, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose sodium, hydroxyethyl cellulose dimethyl Examples include diallylammonium chloride, hydroxyethylcellulose hydroxypropyltrimethylammonium chloride ether, carboxyvinyl polymer, polyacrylic acid and salts thereof, alkyl (meth) acrylate copolymer, polyvinyl alcohol, polyvinylpyrrolidone, and quaternary nitrogen-containing cellulose ether. It is done.

  The content of the water-soluble polymer compound in the solid hair dye composition can be appropriately set according to the purpose or application, but is preferably 0.01 to 20% by mass from the viewpoint of improving applicability. More preferably, it is 0.1-10 mass%, More preferably, it is 1-5 mass%.

  The oily component imparts a moist feeling to the hair. In addition, when the solid hair dye composition is in a powder form, the powdery component is prevented from being scattered during storage and use. Therefore, the solid hair dye composition preferably contains an appropriate amount of an oil component. Examples of the oil component include fats and oils, waxes, higher alcohols, hydrocarbons, higher fatty acids, alkyl glyceryl ethers, esters, and silicones.

  Examples of fats and oils include lanolin, olive oil, camellia oil, shea fat, almond oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, corn oil, rapeseed oil, rice bran oil, rice germ oil, grape seed oil, avocado Oil, macadamia nut oil, castor oil, coconut oil, and evening primrose oil. Examples of the wax include beeswax, candelilla wax, carnauba wax, jojoba oil, and lanolin. Examples of higher alcohols include cetyl alcohol (cetanol), 2-hexyldecanol, stearyl alcohol, isostearyl alcohol, cetostearyl alcohol, oleyl alcohol, aralkyl alcohol, behenyl alcohol, 2-octyldodecanol, lauryl alcohol, myristyl alcohol, decyltetra Examples include decanol and lanolin alcohol.

  Examples of the hydrocarbon include paraffin, olefin oligomer, polyisobutene, hydrogenated polyisobutene, mineral oil, squalane, polybutene, polyethylene, microcrystalline wax, and petrolatum. Examples of the higher fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, 12-hydroxystearic acid, oleic acid, and lanolin fatty acid. Examples of the alkyl glyceryl ether include batyl alcohol, chimyl alcohol, ceralkyl alcohol, and isostearyl glyceryl ether.

  Examples of esters include diisopropyl adipate, isopropyl myristate, cetyl octanoate, isononyl isononanoate, octyldodecyl myristate, isopropyl stearate, stearyl stearate, myristyl myristate, isotridecyl myristate, 2-ethylhexyl palmitate, Octyldodecyl ricinoleate, fatty acid cholesteryl / lanosteryl having 10 to 30 carbon atoms, cetyl lactate, lanolin acetate, ethylene glycol di-2-ethylhexanoate, pentaerythritol fatty acid ester, dipentaerythritol fatty acid ester, cetyl caprate, tricapryl Examples include glyceryl acid, diisostearyl malate, dioctyl succinate, and cetyl 2-ethylhexanoate.

  Examples of the silicone include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, and a highly polymerized silicone having an average degree of polymerization of 650 to 10,000. , Polyether modified silicone, amino modified silicone, betaine modified silicone, alkyl modified silicone, alkoxy modified silicone, mercapto modified silicone, carboxy modified silicone, and fluorine modified silicone. Among the specific examples of these oily components, only one kind may be contained alone, or two or more kinds may be contained in combination.

  Examples of the polyhydric alcohol include glycol and glycerin. Examples of the glycol include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, and 1,3-butylene glycol. Examples of glycerin include glycerin, diglycerin, and polyglycerin.

  The surfactant emulsifies the hair dye composition as an emulsifier or a solubilizing agent for each component at the time of use, and adjusts the viscosity or improves the viscosity stability. Therefore, the hair dye composition preferably contains a surfactant. Examples of the surfactant include an anionic surfactant, a cationic surfactant, a nonionic surfactant, and an amphoteric surfactant. Among these, an anionic surfactant is preferable from the viewpoint that compatibility with water as a solvent of the hair dye composition is improved.

  Examples of the anionic surfactant include alkyl ether sulfate, alkyl sulfate, alkenyl ether sulfate, alkenyl sulfate, olefin sulfonate, alkane sulfonate, saturated or unsaturated fatty acid salt, alkyl or alkenyl ether carboxylic acid. Examples include salts, α-sulfone fatty acid salts, N-acyl amino acid type surfactants, phosphate mono- or diester type surfactants, and sulfosuccinates. Examples of the counter ion of the anionic group of these surfactants include sodium ion, potassium ion, and triethanolamine. Examples of the alkyl sulfate include sodium lauryl sulfate. Examples of the sulfosuccinic acid ester include disodium lauryl sulfosuccinate.

  Examples of cationic surfactants include alkyltrimethylammonium salts, alkenyltrimethylammonium salts, dialkyldimethylammonium salts, dialkenyldimethylammonium salts, lanolin fatty acid amidopropylethyldimethylammonium, alkyloylamidopropyldimethylamine, alkylpyridinium salts, and A benzalkonium salt is mentioned. Examples of the counter ion of the cationic group of these surfactants include chloride ion, bromide ion, iodide ion, alkyl sulfate ion, and saccharin. Examples of the alkyl trimethyl ammonium salt include stearyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, and lauryl trimethyl ammonium chloride. An example of the benzalkonium salt is benzalkonium chloride.

  Examples of nonionic surfactants include polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyethylene sorbitan fatty acid esters, sucrose fatty acid esters, sorbitan fatty acid esters, alkyl saccharide surfactants, glycerin fatty acid esters, polyoxyethylene. Examples include hydrogenated castor oil, fatty acid alkanolamides, and alkylamine oxides. Examples of the polyoxyalkylene alkyl ether include laureth (polyoxyethylene (POE) lauryl ether), ceteth (polyoxyethylene cetyl ether), steareth (polyoxyethylene stearyl ether), oleth (polyoxyethylene oleyl ether), and palace. Is mentioned.

  Examples of amphoteric surfactants include cocobetaine, lauramidopropyl betaine, cocamidopropyl betaine, sodium lauroamphoacetate, sodium cocoamphoacetate, and lauryl betaine (lauryldimethylaminoacetic acid betaine).

  You may mix | blend an alkaline agent in order to improve hair dyeing power more. As an alkaline agent, a solid-state thing is used at normal temperature, For example, sodium carbonate, potassium carbonate, ammonium carbonate, and sodium metasilicate are mentioned. Examples of the preservative include parabens. The polypeptide may be formulated to protect the hair. Polypeptides include, for example, hydrolysates obtained by hydrolyzing proteins such as collagen, keratin, elastin, fibroin, conchiolin, soy protein and casein using acid, alkali or protease, and quaternized cationic modified proteins. Can be mentioned.

  Examples of pH adjusters include ammonium sulfate, ammonium nitrate, ammonium chloride, primary ammonium phosphate, secondary ammonium phosphate, citric acid, tartaric acid, lactic acid, malic acid, succinic acid, fumaric acid, maleic acid, pyrophosphoric acid, and gluconic acid. , Glucuronic acid, benzoic acid, 2-amino-2-methyl-1,3-propanediol, and basic amino acids. Examples of chelating agents include sodium ethylenediaminehydroxyethyl triacetate, edetic acid, disodium edetate, tetrasodium edetate, sodium citrate, sodium metaphosphate, sodium polyphosphate, and 1-hydroxyethylidene-1,1-diphosphone. An acid and its salt are mentioned. Examples of the antioxidant include ascorbic acid and sulfite. Examples of the excipient include sodium sulfate.

  The solid hair dye composition of the present embodiment is used for hair dyeing treatment by being applied to hair in the presence of a solvent at the time of use. As a specific method of using the solid hair dye composition, for example, a method of first performing a hair dyeing process by blending an appropriate amount of a solvent into the solid hair dye composition and applying the resulting mixture to the hair Is mentioned. In addition, after applying a solvent to the hair in advance, a method of performing a hair dyeing treatment by attaching the solid hair dye composition to the hair, and first applying the solid hair dye composition to the hair, and then the hair You may apply the method of dyeing hair by apply | coating a solvent to. From the viewpoint of improving levelness, a method in which the solid hair dye composition is dissolved in a solvent in advance and then the resulting mixture is applied to the hair. When an appropriate amount of water is added as a solvent to the solid hair dye composition, the mixing ratio of the solid hair dye composition and water is preferably 1: 2 to 20, more preferably 1: 3 to 10 as a mass ratio. It is. When the blending ratio of water to the solid hair dye composition is less than 1, the solid hair dye composition may not be sufficiently dispersed or dissolved in the solvent. Thereby, the hair dyeing process may not be possible with a more vivid warm color tone. On the other hand, if the blending ratio of water with respect to the solid hair dye composition exceeds 20, the final concentration of each component is lowered, and proper viscosity and hair dyeing power may not be obtained.

  Examples of the solvent used during the hair dyeing process include water and organic solvents. Examples of the organic solvent include ethanol, isopropanol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, isoprene glycol, hexylene glycol, ethyl carbitol, glycerin, diglycerin, polyethylene glycol, and polypropylene glycol. These organic solvents may be blended singly or in combination. Among these water or organic solvents, water or ethanol is preferably used from the viewpoint of convenience, and water is more preferably used.

  The solid hair dye composition of the present embodiment may further contain a dispersant in order to improve the dispersibility and fluidity in a solvent and improve the ease of conforming to hair. Examples of the dispersant include stearic acid metal salt, silicic acid, metal silicate salt, talc, sucrose fatty acid ester, crystalline cellulose, low-substituted hydroxypropylcellulose, dextrin, starch, and lactose. Examples of the metal stearate include calcium stearate and magnesium stearate.

  The preparation method of a mixture can be prepared using various preparation tools, for example, a bottle, a cup, and a tray. The preparation tool is appropriately selected depending on the viscosity of the mixture. Among the preparation tools, it is preferable to employ a bottle. That is, each agent can be easily and quickly mixed by enclosing a solid hair dye composition and a solvent in a bottle at a predetermined ratio and shaking the bottle. Furthermore, it is more preferable to use an applicator container that includes a bottle and an applicator that is connected to the bottle and discharges the mixture in the bottle. By using such an applicator container, the mixture can be prepared in the bottle and the mixture can be applied to the hair by the applicator, so that the application operation becomes simpler. Examples of the applicator provided in the applicator container include combs, brushes, and nozzles. As an applicator, a comb-equipped container that can apply a mixed solution to hair while combing with a comb body is preferable from the viewpoint of convenience.

  The solid hair dye composition is applied to the hair together with a solvent and then left for a predetermined time, whereby the hair is dyed in a warm color tone. After leaving for a predetermined time, the hair that has been dyed is subjected to a plain rinse (rinsing with water or warm water) and then a drying treatment. In the above-described series of hair dyeing treatment steps, first, the melanin pigment in hair is oxidatively decomposed or the resonance structure is changed by the oxidizing power of percarbonate, and the hair is visually decolorized brightly in appearance. At the same time, components (B-1) to (B-3) as dye intermediates are oxidatively polymerized by the oxidizing power of percarbonate, and the hair is dyed in a bright warm color.

The solid hair dye composition according to this embodiment has the following advantages.
(1) The solid hair dye composition according to this embodiment comprises (A) a percarbonate as an oxidant and (B) an oxidative dye, and at least a dye intermediate as (B-1) p-phenylenediamine sulfate. And at least one selected from toluene-2,5-diamine sulfate, (B-2) p-aminophenol sulfate, and (B-3) 5-amino-2-methylphenol sulfate. Therefore, it is excellent in hair dyeing power and can be dyed with a bright warm color tone.

  (2) Preferably, sodium percarbonate is contained as the percarbonate. Therefore, even when (B) the oxidation dye is stored in one agent, there is no possibility that the stability of the (B) oxidation dye is lowered. In addition, the hair can be brightly decolored in the hair dyeing treatment, and (B) the hair can be dyed in a brighter warm color by the oxidative polymerization reaction of the oxidative dye.

  (3) Preferably, in a solid-state hair dye composition, percarbonate contains 20-60 mass%. Accordingly, the hair can be dyed with a more vivid warm color without damaging the hair (without reducing the feel of the hair).

  (4) Preferably, in the solid hair dye composition, the total content of the components (B-1) to (B-3) as the dye intermediate is 1.0 to 30% by mass. Therefore, the hair can be dyed with a brighter color tone. In addition, since the hair dyeing process is performed with a bright warm color tone regardless of the direct dye, the fastness can be further improved.

  (5) Preferably, in the solid hair dye composition, the mass ratio of the percarbonate content to the total content of the components (B-1) to (B-3) as the dye intermediate is: 1.0-18.3. Therefore, melanin can be decolorized more fully and the hair can be dyed with a brighter color tone.

  (6) The solid hair dye composition of this embodiment is stored in a state that does not contain a solvent until use. Therefore, compared with the hair dye prepared from the beginning as a liquid, it is excellent in storage stability and can dye hair in a vivid color.

The embodiment may be modified as follows.
-The dosage form of the solid hair dye composition of the said embodiment is not specifically limited, For example, a powder form and a particulate form are mentioned. The average particle size of the solid hair dye composition is not particularly limited as long as it is a size that can be dissolved in a solvent, but it is 32 to 140 mesh (mesh) from the viewpoints of solubility in solvents, mixing properties, and fluidity. ) Is preferred.

  In the solid hair dye composition of the above embodiment, (A) In addition to percarbonate, perborate such as sodium perborate and potassium perborate, and persulfate, You may mix | blend ammonium persulfate, sodium persulfate, and potassium persulfate in the range which does not inhibit the effect of this invention. The compounding amount of perborate in the solid hair dye composition is preferably 5% by mass or less. The blending amount of persulfate in the solid hair dye composition is preferably 5% by mass or less.

  -The storage form of the solid hair dye composition of the above embodiment is not particularly limited, and may be configured as a one-pack type in which all the components are blended, and the two or more agents that are separately separated and stored. It may be configured as a multiple dosage form. From the viewpoint of convenience and portability, it is preferable to configure as a one-agent type. On the other hand, from the viewpoint of improving the stability of the (B) oxidative dye, the (B) oxidative dye and the (A) oxidant may be separately stored and configured as a multiple-dose type.

Next, the embodiment will be described more specifically with reference to examples and comparative examples.
A solid hair dye composition containing each component shown in each table was prepared. The numerical value in the column indicating each component in each table indicates the content of the component in the column, and the unit is mass%. And each solid hair dye composition and water were mixed by the mass ratio as described in each table | surface, and the mixture was prepared. The resulting mixture was applied to a goat hair bundle (hereinafter, simply referred to as a hair bundle) manufactured by Stuffs, using a brush, and allowed to stand in a thermostatic bath at 30 ° C. for 30 minutes. Next, after the mixture adhering to the hair bundle was washed away with water, the hair bundle was subjected to shampoo once and rinse once. Subsequently, the hair bundle was dried with warm air, and then left for one day to obtain a hair bundle subjected to hair dyeing treatment. The obtained hair bundle was evaluated for color, hair coloring power, and feel. Moreover, the color tone was visually evaluated about the obtained hair | bristle bundle.

  The notation of (A), (B-1) to (B-3) in the “component” column in the table indicates a compound corresponding to each component described in the claims of the present application. On the other hand, the notation of a and b in the “component” column in the table indicates a comparative compound of each component described in the claims of the present application.

In each table, the column “mass ratio of water” indicates the mass ratio of the water content to the content of the solid hair dye composition when adjusting the mixture (water / solid hair dye composition). Indicates.
In each table, the column “(A) Mass ratio of sodium percarbonate” indicates the content of the components (B-1) to (B-3) as the dye intermediate in the solid hair dye composition. The mass ratio of the content of sodium percarbonate to the total of (sodium percarbonate / total of (B-1) to (B-3)) is shown.

<Evaluation about color>
About the untreated hair bundle and the hair bundle treated with the mixture as described above, L ^* a ^* b ^* value with a spectrocolorimeter (Minolta, model number: CM-508d (standard light source D65)). (CIE 1976) (L ₁ , a ₁ and b ₁ ) were measured.

The saturation (C ^* ) can be obtained by {(a ^* ) ² + (b ^* ) ² } ^1/2 .
From the L ^* a ^* b ^* values of the untreated hair bundle and the hair bundle subjected to the hair dyeing treatment, the color difference (ΔE ₁ ) between the untreated hair bundle and the hair bundle subjected to the hair dyeing treatment according to the following formula (1): ) Was calculated.

ΔE ₁ = {(L ₁ −L ₀ ) ² + (a ₁ −a ₀ ) ² + (b ₁ −b ₀ ) ² } ^1/2 (1)
L ₁ , a ₁ and b ₁ represent the L ^* value, a ^* value and b ^* value of the hair bundle after the hair dyeing treatment, respectively. L ₀ , a ₀ , and b ₀ indicate the L ^* value, a ^* value, and b ^* value of the untreated hair bundle, respectively. Each value is shown in each table.

(Color evaluation)
“Excellent” in the “color evaluation” column in each table indicates that the saturation (C ^* ) is 19.5 or more, and “good” indicates that the saturation (C ^* ) is 17.0 or more and 19 .. “slightly bad” indicates that the saturation (C ^* ) is 14.5 or more and less than 17.0, and “bad” indicates that the saturation (C ^* ) is 14. Indicates less than 5.

(Evaluation of hair dyeing power)
“Excellent” in the “Hair dyeing power” column of each table indicates that the color difference (ΔE) is 45.0 or more, and “Good” indicates that the color difference (ΔE) is 37.5 or more and less than 45.0. “Slightly bad” indicates that the color difference (ΔE) is 30.0 or more and less than 37.5, and “Poor” indicates that the color difference (ΔE) is less than 30.0.

(Evaluation of visual color tone)
The color tone after dyeing was evaluated according to the system color name listed in "JIS Handbook Color-1996" (April 20, 1996, first edition, first printing, Japanese Standards Association). The results are shown in each table. The underlined color tone in the “visual color tone” column of Table 4 indicates that a warm color tone is not obtained.

<Feel>
The feeling of the panelist passing the finger through the hair bundle was compared between the untreated hair bundle and the dyed hair bundle to evaluate whether the feel of the hair dyed hair bundle was good. “Excellent” means that there are more than 7 people who answered “good” out of 10 panelists, and “good” means 5-6 people who answered “good” out of 10 panelists. "Slightly bad" indicates that 3 out of 10 panelists answered "good", and "bad" means 2 out of 10 panelists answered "good". Indicates that: The results are shown in each table.

＜考察＞
表１〜３に示されるように、各実施例に係る固体状染毛剤組成物においては、色、染毛力及び感触の各評価は、優れる又は良好であることが分かった。

<Discussion>
As shown in Tables 1 to 3, it was found that in the solid hair dye composition according to each example, each evaluation of color, hair dyeing power and touch was excellent or good.

  The solid hair dye composition in which the content of (A) sodium percarbonate in Examples 3 to 5 is in the range of 20 to 60% by mass is the As a result, the color evaluation was higher than that of the solid hair dye composition having a content outside the range of 20 to 60% by mass.

  The solid hair dye composition according to Examples 6 and 8, in which the total content of the components (B-1) to (B-3) is 1.0% by mass or more relates to Examples 3 to 5 ( B-1)-(B-3) The result of having high evaluation of hair dyeing power compared with the solid hair dye composition whose sum total of content of a component is less than 1.0 mass%.

  The solid hair dye composition containing (B-1) toluene-2,5-diamine sulfate as an oxidative dye according to Example 7 is (B-1) p-sulfate as the oxidative dye according to Example 6. The evaluation of the hair dyeing power was similarly excellent as compared with the solid hair dye composition using phenylenediamine. In addition, the solid hair dye composition according to Example 7 was dyed in a warm color having a bright color tone.

  The solid hair dye composition having a mass ratio of (A) sodium percarbonate of 18.3 or less according to Example 8 has a mass ratio of (A) sodium percarbonate according to Example 6 exceeding 18.3. It was found that the color difference (ΔE) was higher than that of the solid hair dye composition.

  The solid hair dye composition having a total content of the components (B-1) to (B-3) according to Example 9 of 8.0% by mass is related to Examples 6 and 7 (B-1 ) To (B-3) It was found that the color difference (ΔE) was higher than that of the solid hair dye composition in which the total content of the components was lower than that in Example 9.

  The hair dye composition having a water mass ratio of 3 to 10 according to Examples 11 and 12 is compared with the hair dye composition having a water mass ratio of 3 to 10 outside the range according to Examples 10 and 13. It was found that the color difference (ΔE) was high.

  The solid hair dye composition having a mass ratio of (A) sodium percarbonate of 18.3 or less according to Example 15 has a mass ratio of (A) sodium percarbonate according to Example 14 exceeding 18.3. It was found that the color difference (ΔE) was higher than that of the solid hair dye composition.

The solid hair dye composition having a mass ratio of (A) sodium percarbonate of 1.0 or more according to Example 17 has a mass ratio of (A) sodium percarbonate according to Example 16 of less than 1.0. It was found that the a ^* value and C ^* value were higher than those of the solid hair dye composition.

The solid hair dye composition having a mass ratio of (A) sodium percarbonate of 1.25 or more according to Example 18 has a mass ratio of (A) sodium percarbonate of Example 17 of less than 1.25. It was found that the a ^* value and C ^* value were higher than those of the solid hair dye composition.

  The solid hair dye composition in which the total content of the components (B-1) to (B-3) according to Example 19 is 34% by mass is based on (B-1) to ( B-3) The evaluation of hair dyeing power was excellent as in the case of the solid hair dye composition in which the total content of the components was 8% by mass.

  The solid hair dye composition containing (B-1) toluene-2,5-diamine sulfate according to Example 20 is a solid containing p-phenylenediamine sulfate (B-1) according to Example 9. As in the case of the hair dye composition, the color evaluation was good or better, and the evaluation of the hair dyeing power was excellent.

  According to Example 21, 2,4-diaminophenoxyethanol sulfate (total oxidation dye) as oxidation dyes other than (B-1) to (B-3) components and (B-1) to (B-3) components as oxidation dyes The solid hair colorant composition containing 1% by mass or less) has a warm color tone as in Example 9 containing only the components (B-1) to (B-3) as the oxidation dye. I found out that

As shown in Table 4, Comparative Example 1, which does not contain the component (B-2) in the solid hair dye composition, did not provide the intended warm color tone.
In Comparative Example 2, which does not contain sodium percarbonate (A) in the solid hair dye composition, the intended warm color tone was not obtained.

In Comparative Example 3, which does not contain the component (B-3) in the solid hair dye composition, the intended warm color tone was not obtained.
It was found that Comparative Examples 4 and 5 containing sodium perborate (A) instead of sodium percarbonate in the solid hair dye composition were inferior in hair dyeing power to each Example.

  In the solid hair dye composition, (A) sodium perborate was contained instead of sodium percarbonate, and the contents of the components (B-1) to (B-3) were made larger than those in Comparative Example 5. Comparative Example 10 was found to be inferior in color evaluation to Comparative Example 5.

  In the solid hair dye composition, it was found that (A) Comparative Example 6 containing sodium persulfate instead of sodium percarbonate was inferior in hair dyeing power and touch to each Example. Further, the intended warm color tone could not be obtained.

In Comparative Example 7, which does not contain the component (B-2) in the solid hair dye composition, the intended warm color tone was not obtained.
In Comparative Example 8 which does not contain the component (B-3) in the solid hair dye composition, the intended warm color tone was not obtained. Moreover, it turned out that hair dyeing power is inferior to each Example.

It turned out that the comparative example 9 which does not contain (B-1) component in a solid-state hair dye composition has inferior hair dyeing power with respect to each Example.
In Comparative Example 11 containing no component (B-3) and containing 4-amino-3-methylphenol in the solid hair dye composition, the intended warm color tone could not be obtained. Moreover, it turned out that hair dyeing power is inferior to each Example.

Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
(A) In the hair dyeing method using the solid hair dye composition, the step of mixing the solid hair dye composition and water in a mass ratio of 1: 2 to 20, and the resulting mixture A hair dyeing method using a solid hair dye composition characterized by comprising a step of applying a hair dyeing treatment by applying to hair.

Claims (7)

In the solid hair dye composition for containing (A) an oxidizer and (B) an oxidative dye, and for dyeing hair in a warm color tone,
The (A) oxidizing agent is a percarbonate.
The (B) oxidation dye is at least one selected from (B-1) p-phenylenediamine sulfate and toluene-2,5-diamine sulfate as at least a dye intermediate, (B-2) p-aminophenol sulfate, And (B-3) sulfuric acid 5-amino-2-methylphenol,
When the solid hair dye composition is applied to a goat hair in the presence of a solvent and dyed, the color of the goat hair before and after dyeing in the CIE L ^* a ^* b ^* color space display system. A solid hair dye composition having a difference in b ^* value (Δb) of −14 or more, a color change ΔE of 37.5 or more , and a saturation C ^* of 15 or more .   The solid hair dye composition according to claim 1, wherein the percarbonate is sodium percarbonate.   3. The solid hair dye composition according to claim 1, wherein 20 to 60% by mass of the percarbonate is contained in the solid hair dye composition.   In the solid hair dye composition, the total content of the components (B-1) to (B-3) as the dye intermediate is 1.0 to 30% by mass. The solid hair dye composition according to any one of claims 1 to 3.   In the solid hair dye composition, the mass ratio of the percarbonate content to the total content of the components (B-1) to (B-3) as the dye intermediate is 1.0 to It is 18.3, The solid-state hair dye composition as described in any one of Claims 1-4 characterized by the above-mentioned. When the solid hair dye composition is applied to a goat hair in the presence of a solvent and dyed, the color of the goat hair before and after dyeing in the CIE L ^* a ^* b ^* color space display system. a ^* value of the difference (.DELTA.a) is solid hair dye composition according to any one of claims 1 to 5, characterized in that at 12.5 or more.   The hair dyeing method using the solid hair dye composition according to any one of claims 1 to 6, wherein the solid hair dye composition is applied to hair in the presence of a solvent. A hair dyeing method using a solid hair dye composition characterized by comprising a step of applying a hair dyeing treatment.