JP2010150180A - Oxidative hair dye - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair dye which can dye hair more light-colored and soft to touch and to provide a product reduced in volume in that the dose of a first pack is markedly smaller than usual and it is generally marketed in the form of a combination of a first pack and a second pack as a one-time dose. <P>SOLUTION: This invention provides a two-pack oxidative hair dye which is one comprising a first pack containing a hair dye-containing component and a second pack containing an oxidizing agent, wherein the viscosity of the second pack is 1,000-10,000 mPa s and the hair dye is used by mixing 1 pt.wt. first pack with 5-20 pts.wt. second pack. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an oxidative hair dye for dyeing hair. The amount of the first agent used is small, the hair dyeing effect is excellent, and the poor touch after use can be reduced. The present invention relates to an oxidative hair dye which can reduce the total volume of products sold in combination with the agent and the second agent, and can make transportation and storage more efficient.

  Currently, so-called two-component hair dyes are used for hair dyeing, which are composed of a first agent and a second agent that are stored separately, and are used by mixing them immediately before use. Conventionally, in such a two-component hair dye, the first agent containing the active ingredient and the second agent containing the oxidizing agent are mixed in a ratio of 1: 1 to 1: 2, and the hair dye active ingredient is mixed. A technique of dyeing hair by penetrating into hair and oxidative polymerization has been used. However, the effect of lightening the hair color and the dyeing effect were not sufficient.

  Further, in the product form in which the first agent and the second agent are packaged in an amount to be used for one hair dye, the first agent is transferred to and mixed with the second agent container. In addition to the space for filling, a space for adding and mixing the first agent is required. In the conventional two-component hair dye, since the amount of the first agent is large, it is necessary to increase the volume of the second agent container accordingly. Therefore, since the total volume of the first agent container and the second agent container is also increased, the product is not efficient in transportation and storage.

  Here, an attempt has been made to increase the oxidant concentration in a mixed state of the first agent and the second agent in order to make the hair color brighter and obtain a better dyeing. Specifically, as described in Patent Document 1, a hair dye is described in which a first agent and a second agent containing an oxidizing agent are mixed at 1: 5 to 1:20. If the use ratio of the first agent can be reduced in this way, not only the volume of the first agent container but also the space for adding the first agent in the second agent container can be reduced. The total volume of the second agent container can be reduced, and the efficiency of transportation and storage can be expected.

However, in the hair dye described in Patent Document 1, since a large amount of surfactant is blended in the first agent to dissolve the dye, it can be brightly dyed, but by excessively degreasing, etc. When rinsing and shampooing, the hair is squeezed or entangled, and the touch becomes a problem, which is not sufficient as a hair dye that can be commercialized. In addition, this method has a problem that the solubility of the dye is low and the amount of the dye that can be blended is small.
JP 2001-226238 A

  As described above, when a considerable amount of a surfactant is blended in order to dye hair brighter, the burden on the hair becomes greater, and the feeling of combing and fingering after hair dyeing becomes worse. An object of the present invention is to provide an oxidative hair dye having a high hair dyeing effect and excellent in feel after hair dyeing. A further object of the present invention is to provide a hair dye excellent in terms of transportation and storage efficiency.

  As a result of intensive studies to solve the above problems, the present inventors have determined that the first agent and the second agent in the oxidative hair dye comprising the first agent and the second agent containing the oxidizing agent. It has been found that the above problem can be overcome by using the mixture in a weight ratio of 1: 5 to 1:20 and setting the viscosity of the second agent within a specific range.

  The present invention has been completed as a result of further studies based on the above findings, and is described below.

  Item 1. A two-component oxidative hair dye comprising a first agent containing a hair dye active ingredient and a second agent containing an oxidizing agent, wherein the second agent has a viscosity of 1000 to 10,000 mPa · s, A two-component oxidative hair dye used by mixing 5 to 20 parts by weight of the second agent with respect to 1 part by weight of the agent.

  Item 2. Item 2. The two-component oxidative dyeing according to Item 1, wherein the first agent and the second agent are each filled in a container in a single use amount, and the volume of the first agent is 5 to 20 ml. Hair agent.

  Item 3. Item 3. The two-component oxidative hair dye according to Item 1 or 2, wherein the second agent further contains a cationic surfactant.

  According to the two-component dyeing agent according to the present invention, the first agent and the second agent are mixed at a ratio of 1: 5 to 1:20 to increase the lightness of black hair and dye it brighter. can do. Further, by using the second agent having a viscosity within a specific range, the first agent does not contain a surfactant, or the amount of the surfactant in the first agent can be reduced. Occasionally there is no creaking or entanglement, the touch at the time of hair dyeing can be improved, and dyes can be dyed in more hues due to the increased solubility of the dye. Furthermore, since the amount of the first agent used is small, the first agent container can be made small, the space for mixing necessary for the second agent container may be small, and the amount of the second agent to be used is small. Even if it increases, the 2nd agent container of the magnitude | size about the same as the past can be used. Therefore, in a product sold in combination with the first agent and the second agent, the total volume of the product can be reduced by reducing the volume of the container of the first agent.

  That is, the gist of the present invention is a hair dye that can be dyed brighter and has an excellent feel. Furthermore, the amount of the first agent used is significantly less than usual, and is generally a product that is sold by combining the first agent and the second agent for one dose, and the total volume can be reduced by about 20 to 60%. .

  The present invention is described in detail below.

  The present invention is a two-component oxidative hair dye comprising a first agent containing a hair dye active ingredient and a second agent containing an oxidizing agent, wherein the second agent has a viscosity of 1000 to 10,000 mPa · s. There is provided a two-component oxidative hair dye that uses 5 to 20 parts by weight of the second agent mixed with 1 part by weight of the first agent.

  The mixing ratio of the 1st agent containing the hair dye active ingredient used for this invention and the 2nd agent containing an oxidizing agent is 1: 5-1: 20.

I. First Agent The two-agent hair dye of the present invention includes a first agent containing a hair dye active ingredient. As the form of the first agent, various forms can be used as long as the effect of the present invention is achieved, but a liquid form is preferably used.

  In this invention, the hair dye active ingredient used for the 1st agent shows the dye and alkali agent which are the essential components in a hair dye.

As the dye contained in the first dye agent, known oxidation dyes and direct dyes used in the field of two-component hair dyes can be widely used.

  The oxidation dye is not particularly limited, and a wide variety of known dyes can be used. More specifically, 5-aminoorthocresol, 5-aminoorcresol sulfate, 2,4-diaminophenol hydrochloride, toluene-2,5-diamine hydrochloride, paraphenylenediamine hydrochloride, N-phenylparaphenylenediamine hydrochloride, hydrochloric acid Metaphenylenediamine, orthoaminophenol, acetic acid N-phenylparaphenylenediamine, 2,6-diaminopyridine, sulfuric acid 2,6-diaminopyridine, 1,5-dihydroxynaphthalene, diphenylamine, toluene-2,5-diamine, toluene- 3,4-diamine, α-naphthol, paraaminophenol, paraphenylenediamine, paramethylaminophenol, hydroquinone, pyrogallol, N-phenylparaphenylenediamine, phloroglucin, metaaminophenol, metaphenyle Diamine, gallic acid, orthoaminophenol sulfate, orthochloroparaphenylenediamine sulfate, 4,4′-diaminodiphenylamine sulfate, toluene-2,5-diamine sulfate, paraaminophenol sulfate, paraphenylenediamine sulfate, paramethylaminophenol sulfate, Examples include 1-hydroxyethyl-4,5-diaminopyrazole sulfate, 2- (2-hydroxyethyl) -1,4-phenylenediammonium sulfate, 2-methylresorcinol, metaaminophenol sulfate and metaphenylenediamine sulfate, resorcinol, etc. can do. You may use the said dye individually or in mixture of 2 or more types.

  The oxidative hair dye of the present invention may further contain a direct dye in the first agent. The direct dye is not particularly limited and a wide variety of known dyes can be used. More specifically, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, nitroparaphenylenediamine hydrochloride, nitroparaphenylenediamine, paranitroorthophenylenediamine, 2-amino-5-nitrophenol sulfate , Nitroparaphenylenediamine sulfate, paranitroorthophenylenediamine sulfate, paranitrometaphenylenediamine sulfate, 1-amino-4-methylaminoanthraquinone, 1,4-diaminoanthraquinone, picramic acid, sodium picrate, 2-((2 -Nitrophenyl) amino) ethanol and the like. You may use the said dye individually or in mixture of 2 or more types.

  In addition, since the fastness of hair washing of an oxidation dye is higher than that of a direct dye, it is preferable to use only an oxidation dye or a combination of an oxidation dye and a direct dye.

  The blending amount of the oxidation dye and the direct dye is appropriately selected depending on the kind of dye, the desired degree of dyeing, and the like, and may be blended in an arbitrary amount. Since the mixing ratio of the first agent and the second agent is 1: 5 to 1:20, it is about 5 to 20 times that of the normal first agent. For example, the above-mentioned dye may be blended in an amount of 0.1 to 50% by weight, preferably 1 to 30% by weight based on the total weight of the first agent (in the case where two or more kinds of dyes are included, the total of all the dyes). it can.

Alkaline agents are used for swelling the hair and penetrating the dye into the hair. As the alkaline agent, known alkaline agents used in the field of two-component hair dyes can be widely used. For example, ammonia water, monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA), 2-amino-2-methyl-1-propanol (AMP), 2-amino-2-methyl-1,3-propanediol (AMPD), tetrakis (2-hydroxyisopropyl) ethylenediamine (TE), mono Alkanolamines such as isopropanolamine (MIPA), sodium hydroxide, potassium hydroxide and the like are used as appropriate, but aqueous ammonia and monoethanolamine are preferred. The said alkali agent can be used individually by 1 type or in mixture of 2 or more types.

  Since the mixing ratio of the first agent and the second agent is 1: 5 to 1:20, the concentration of the alkali agent is about 5 to 20 times that of the normal first agent. For example, the alkali agent may be blended in an amount of 1 to 80% by weight, preferably 10 to 60% by weight, based on the total weight of the first agent (when two or more alkali agents are included, the total of the alkali agents). it can.

To improve the solubility of other component dyes, alcohols such as ethanol and isopropanol, and polyhydric alcohols such as ethylene glycol, propylene glycol, glycerin, polyethylene glycol, ethylene glycol monoethyl ether, and ethylene glycol monobutyl ether are used as appropriate. To do. These solvents may be used alone or in combination of two or more, but propylene glycol, glycerin and polyethylene glycol are preferred. The concentration of the solvent is preferably 5 to 50% by weight. By setting the concentration of the solvent within the above range, precipitation of the dye at a low temperature can be suppressed, and since the amount of the solvent used is not excessive, a sufficient amount of water can be used for dissolving the dye.

  In order to improve the stability, an antioxidant such as sulfite and ascorbate and a metal sequestering agent such as edetate can be used.

  In addition, known hair protecting agents, flavoring agents, polymer compounds, pigments, UV absorbers, stabilizers, penetrating agents, wetting agents, hair nourishing agents, and the like are appropriately added to such an extent that the performance of the oxidation hair dye of the present invention is not impaired. May be.

  A 1st agent can be manufactured by melt | dissolving and mixing the above-mentioned component in water. As water, purified water is usually blended. The blending amount of water is the balance when a predetermined amount of each component is blended, and the blending amount is preferably about 10 to 95% by weight with respect to the total weight of the first agent. However, when the oxidation hair dye of the present invention contains various components such as an oxidation dye and further an antioxidant, the amount of water is preferably about 10 to 80% by weight, Of course, it is appropriately adjusted depending on the blending amount and the like.

  By setting the viscosity of the second agent to a specific range described later, the first agent that does not contain a surfactant can be used. The use of a surfactant is effective for improving the solubility of the dye, but the feeling during rinsing and shampooing is reduced. In an embodiment in which no surfactant is used for the first agent, an excellent feel in the finish can be obtained.

II. Second agent The second agent contains an oxidizing agent. As long as the form of the second agent has the effect of the present invention, various forms can be used, regardless of liquid form, cream form, foam form, gel form, or emulsion.

As the oxidant contained in the second oxidant agent, known ones widely used in the field of two-component oxidative hair dyes can be widely used except for ammonium salts. Specifically, examples of the oxidizing agent include substances that liberate oxygen by contact with hydrogen peroxide or water.

  More specifically, the oxidizing agent includes hydrogen peroxide (usually used as a 10-35 wt% aqueous solution), sodium perborate, potassium perborate, sodium percarbonate, sodium bromate (these are Etc.) and the like. Hydrogen peroxide is preferable. You may use these oxidizing agents 1 type or in mixture of 2 or more types.

  The amount of the oxidizing agent is not particularly limited as long as it is an amount that can oxidize all the oxidizing dyes in the oxidative hair dye, and is an amount that generates sufficient oxygen to decolorize in the decolorizing agent, The oxidizing agent should be added in an amount of about 0.01 to 40% by weight, preferably about 0.1 to 30% by weight, based on the total weight of the second agent.

Viscosity of the second agent In order to obtain the desired viscosity after mixing the first and second agents, the viscosity of the second agent is preferably 1000 to 10,000 mPa · s, more preferably 2000 to 5000 mPa · s. is there. In the present invention, the viscosity indicates a viscosity measured by the method described in Test Examples in the present specification. When the viscosity of the second agent is in the above range, a viscosity sufficient for the viscosity after mixing with the first agent is obtained, dripping is suppressed during the hair dyeing treatment, and when mixing with the first agent It is preferable because it can be made uniform easily.

During surfactants second agent can purpose and provide wetting and flexibility effect on the oxidation hair dye, fatliquoring the second agent, also a surfactant is added for the purpose of further emulsifying the second agent. A wide variety of known surfactants can be used. Specific examples include nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants. For the purpose of improving the feel, it is preferable to use a cationic surfactant.

  Examples of the nonionic surfactant include polyoxyethylene isostearyl ether, polyoxyethylene isocetyl ether, polyoxyethylene octyldodecyl ether, polyoxyethylene stearyl ether, polyoxyethylene cetyl ether, polyoxyethylene cetostearyl ether. , Polyoxyethylene tridecyl ether, polyoxyethylene butyl ether, polyoxyethylene behenyl ether, polyoxyethylene myristyl ether, polyoxyethylene alkyl (10-30) ether such as polyoxyethylene lauryl ether, polyoxyethylene oleyl cetyl ether, Polyoxyethylene alkenyl (carbon number 10-30, unsaturated number 1-2) ether such as polyoxyethylene oleyl ether, poly Polyoxyethylene octyl phenyl ether, polyoxyethylene dinonyl phenyl ether, polyoxyethylene nonylphenyl ether, and the like.

  Examples of the cationic surfactant include alkyl (10-30) trimethylammonium chloride such as stearyltrimethylammonium chloride and cetyltrimethylammonium chloride, distearyldimethylammonium chloride, dicetyldimethylammonium chloride, and dialkyl chloride (12-15). ) Dialkylammonium chloride, dialkyl chloride (14-18) dimethylammonium chloride (12-18) dimethylammonium chloride, ethyl lanolin sulfate fatty acid aminopropylethyldimethylammonium chloride, octadecylammonium chloride, octyldihydroxyethylmethylammonium chloride, dicocoyl dimethyl chloride Ammonium, di (polyoxyethylene) oleylmethylammonium chloride, stearyl dihydroxyethyl betaine Lithium, stearyldimethylbenzylammonium chloride, cetylpyridinium chloride, benzalkonium chloride, benzethonium chloride, polyoxyethylene (1) polyoxypropylene (25) diethylmethylammonium chloride, myristyldimethylbenzylammonium chloride, methylbenzethonium chloride, lauryltrimethyl chloride Examples include ammonium, laurylpyridinium chloride, alkylisoquinolinium bromide, stearyltrimethylammonium bromide, cetyltrimethylammonium bromide, lauryltrimethylammonium bromide, stearyltrimethylammonium saccharin, and cetyltrimethylammonium saccharin.

  Examples of the anionic surfactant include N-acyl-L-glutamate diethanolamine, N-acyl-L-glutamate triethanolamine, N-acyl-L-glutamate sodium, isethionate sodium, undecylenoylamidoethylsulfosuccinate. Disodium acid, sodium octylphenoxydiethoxyethylsulfonate, oleoylsarcosine, oleoyl methyltaurine sodium, carboxylated polyoxyethylene tridecyl ether, L-glutamic acid triethanolamine-cured tallow fatty acid amide, L-glutamic acid sodium-cured tallow Fatty acid amide, L-glutamic acid sodium coconut oil fatty acid amide, hydrogenated coconut oil fatty acid sodium glyceryl sulfate, diundecylenoylamidoethylsulfosuccinate sodium N-stearoyl-L-glutamate sodium, stearoyl-L-glutamate disodium, stearoylmethyl taurate sodium, dioctyl sodium sulfosuccinate, disodium polyoxyethylene lauroyl ethanolamide sulfosuccinate, disodium lauryl sulfosuccinate, diethanolamine cetyl sulfate, Sodium cetyl sulfate, sodium cetostearyl sulfate, sodium dextran sulfate, sodium tetradecenesulfonate, triethanolamine dodecylbenzenesulfonate, triethanolamine tridecylsulfate, ditriethanolamine N-palmitoyl aspartate, sodium polyoxyethylene undecyl ether sulfate , Polyoxyethylene octylphenyl ether sulfate Lithium, polyoxyethylene oleyl ether ammonium sulfate, polyoxyethylene sulfosuccinate disodium lauryl, polyoxyethylene nonylphenyl ether sodium sulfate, polyoxyethylene pentadecyl ether sodium sulfate, polyoxyethylene myristyl ether sulfate triethanolamine, polyoxyethylene myristyl Sodium ether sulfate, polyoxyethylene lauryl ether triethanolamine, polyoxyethylene lauryl ether sodium sulfate, myristyl sulfate diethanolamine, sodium myristyl sulfate, sodium N-myristoyl-L-glutamate, sodium myristoylmethylaminoacetate, sodium myristoyl methyl taurate, Palm oil fatty acid potassium, coconut oil fatty acid Tallow fatty acid-L-glutamic acid sodium amide, N-coconut oil fatty acid-L-glutamic acid triethanolamine, N-coconut oil fatty acid-sodium L-glutamate, coconut oil fatty acid sarcosine, coconut oil fatty acid sarcosine triethanolamine, coconut oil fatty acid Sodium sarcosine, coconut oil fatty acid triethanolamine, coconut oil fatty acid sodium, coconut oil fatty acid sodium methylalanine, coconut oil fatty acid methyl taurine potassium, coconut oil fatty acid methyl taurine sodium, sodium laurylaminodipropionate, sodium lauryl sulfoacetate, laurylbenzene Sodium sulfonate, lauryl sulfate, ammonium lauryl sulfate, lauryl sulfate ethanolamine potassium lauryl sulfate, lauryl sulfate diethanolamine, lauryl sulfate Ethanolamine, sodium lauryl sulfate, magnesium lauryl sulfate, triethanolamine lauroyl-L-glutamate, sodium N-lauroyl-L-glutamate, lauroyl sarcosine, lauroyl sarcosine potassium, sodium lauroyl sarcosine, lauroyl methyl β-alanine sodium, lauroyl methyl taurine Sodium etc. are mentioned.

  Examples of amphoteric surfactants include 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, undecinoyl-carboxylmethoxyethyl carboxymethyl imidazolinium betaine sodium, undecyl hydroxyethyl imidazolinium betaine sodium, Undecyl-N-hydroxyethyl-N-carboxymethylimidazolinium betaine, alkyldiaminoethylglycine hydrochloride, stearyl dihydroxyethyl betaine, sodium stearyldimethylbetaine, stearyl betaine, bis (stearyl-N-hydroxyethylimidazoline) chloroacetic acid complex, palm Oil alkyl-N-carboxyethyl-N-hydroxyethyl imidazolinium betaine sodium, palm oil alkyl betaine Coconut oil fatty acid amidopropyl betaine, coconut oil fatty acid-N-carboxymethoxyethyl-N-carboxyethylimidazolinium betaine sodium, coconut oil fatty acid-N-carboxymethoxyethyl-N-carboxymethylimidazolinium disodium lauryl sulfate, lauryl Examples thereof include betaine dimethylaminoacetate, sodium β-laurylaminopropionate, triethanolamine laurylaminopropionate, and sodium lauryldiaminoethylglycine.

  Said surfactant can be mix | blended individually by 1 type or in mixture of 2 or more types. The amount of the surfactant to be added is not limited as long as it is an amount sufficient to achieve the purpose of addition, and any amount can be used. Generally, it is up to about 60% by weight with respect to the total weight of the second agent, but is 0.1 to 50% by weight, preferably 0.5 to 10% by weight, more preferably 0.7 to 2% by weight. It can mix | blend in the quantity of.

A higher alcohol may be further added to the higher alcohol second agent. Thereby, in hair dyeing, excellent effects are obtained in terms of stability, operability (for example, ease of application to hair, no dripping, ease of mixing operation, etc.), dyeability, and fastness.

  The blending amount can be appropriately set within the range where the effects of the present invention are exerted. For example, with respect to the total weight of the second agent of the oxidative hair dye, the total amount is 0.1 to 0.1 in terms of pure alcohol. It can be 40% by weight. When the amount is less than 0.1% by weight, sufficient stability, operability, dyeability and fastness cannot be obtained, and when the amount exceeds 40% by weight, an increase in the increase is not recognized. Furthermore, when an effect and economical efficiency are considered, the range of 0.5-20 weight% is preferable, and the range of 1-5 weight% is more preferable.

  Here, examples of the higher alcohol used in the present invention include alcohols having 8 to 24 carbon atoms, such as lauryl alcohol, myristyl alcohol, cetanol, stearyl alcohol, behenyl alcohol, cetostearyl alcohol, isostearyl alcohol, oleyl alcohol, Examples include hexyl decanol and octyl decanol. Among these, cetanol, stearyl alcohol, behenyl alcohol, cetostearyl alcohol, oleyl alcohol, and hexyldecanol are particularly preferable from the viewpoint of stability.

A stabilizer may be added to the second stabilizer. As this stabilizer, the well-known thing conventionally used for the hair dye can be used widely. More specifically, phosphoric acid, pyrophosphoric acid, trisodium phosphate, sodium pyrophosphate, acetanilide, sodium stannate and the like can be mentioned. These stabilizers can be used alone or in combination.

  The blending amount of the stabilizer is not particularly limited as long as the oxidizing agent is stabilized, and can be selected from a wide range. Generally, it is good to mix | blend in the quantity of 0.00005 to 0.5 weight% with respect to the 2nd agent total weight, Preferably, it is 0.0001 to 0.2 weight%.

In the oil agent second agent, an oil agent can also be blended for the purpose of imparting wetness, moisture retention and softening action to the oxidative hair dye, and for the purpose of increasing the viscosity of the second agent. As an oil agent, it does not specifically limit, The well-known thing conventionally used for the hair dye can be used widely. More specifically, higher alcohols such as behenyl alcohol and cetanol, fats and oils such as avocado oil, macadamia nut oil and castor oil, hydrocarbons such as liquid paraffin, squalane and microcrystalline wax, higher alcohols such as lauric acid, myristic acid and stearic acid Examples include fatty acids, esters such as isopropyl myristate, isocetyl isostearate, and myristyl lactate. Moreover, highly polymerized methylpolysiloxane, dimethylsiloxane, methyl (polyoxyethylene) siloxane copolymer, methylphenylpolysiloxane, amino-modified silicone, and the like can be used.

Said oil agent can be mix | blended individually by 1 type or in mixture of 2 or more types, As long as the compounding quantity is sufficient quantity to achieve the addition objective, it can select from a wide range. Generally, it can mix | blend in the quantity of 0.1-35 weight% with respect to the 2nd agent total weight, Preferably it is 0.2-20 weight%.
In addition, in the present invention, known hair protecting agents, flavoring agents, pigments, ultraviolet absorbers, stabilizers, penetrating agents, wetting agents, hair nourishing agents, and the like are within a range that does not impair the performance of the second agent, if necessary. You may add suitably.

  A 2nd agent can be manufactured by melt | dissolving and mixing an oxidizing agent and the above-mentioned arbitrary components in water. As water, purified water is usually blended. The blending amount of water is the balance when a predetermined amount of each component is blended, and the blending amount is preferably about 10 to 95% by weight with respect to the total weight of the second agent. Of course, it is appropriately adjusted depending on the kind of various components to be blended in the above, the blending amount and the like.

Manufacturing method of 1st agent and 2nd agent The 1st agent and 2nd agent in the oxidation hair dye of this invention mix | blend and mix all components, respectively with a well-known method, for example, 1st agent and 2nd agent, respectively. Or it can manufacture by mix | blending a one part component as needed, heating and stirring and mixing, after that, cooling and adding the remaining component and mixing.

  In this case, the form of the first agent and the second agent is not limited, and both of them may be liquid, may be creamy, or may be foamy. Further, the first agent may be in a different form such as a liquid and the second agent may be creamy.

  In addition, as described above, the two-component oxidative hair dye of the present invention can use a mixing ratio of the first agent and the second agent in a mixing ratio of 1: 5 to 1:20. Moreover, the specific gravity of these hair dyes is about 1, and the total amount of the first agent and the second agent used for one hair dye is usually about 80 to 120 g. Therefore, considering the ease of mixing operation of the first agent and the second agent, etc., the volume (volume) of the first agent necessary for one hair dyeing may be 5 to 20 ml.

  Therefore, the two-component oxidative hair dye of the present invention includes a form in which the first agent and the second agent are filled in containers in a plurality of usage amounts, respectively, but each amount used individually is individually In the case of a packaged form such as a bottle, the total volume can be greatly reduced, and the efficiency of transportation and storage can be realized. Accordingly, in the present invention, a kit for two-component oxidative hair dyeing comprising a first agent filled in a container with a plurality of use amounts and a second agent filled in the container with a plurality of use amounts, a single use amount is provided. Also included are two-component oxidative hair coloring kits composed of a first agent filled in a container and a second agent filled in a container in a single use amount.

Method of Use The first agent and the second agent thus obtained can be used for hair dyeing by a known method, for example, by mixing the first agent and the second agent immediately before use.

  As described above, the two-component oxidative hair dye of the present invention can be subjected to a hair dyeing treatment according to a conventional method such as, for example, applying it to the hair after mixing the first agent and the second agent. The time is appropriately selected depending on the coating amount, the type and amount of the oxidation dye, and the desired degree of dyeing, but it is 5 minutes or more, preferably 5 to 50 minutes, more preferably 10 to 45 minutes, usually about 40 minutes. Examples are shown.

  The viscosity after mixing the first agent and the second agent at a predetermined ratio is preferably 1000 to 8000 mPa · s, and more preferably 1500 to 4000 mPa · s. It is preferable to set the viscosity after mixing in the above range, since dripping off during hair dyeing treatment is suppressed and elongation when applied to hair is good.

The following oxidative hair dye of the present invention and effects thereof will be described with reference to examples, but the present invention is not limited to these examples. In the following examples, the blending amount is shown in wt%.
Test Example About the oxidative hair dye, the first agent and the second agent of each component and blending ratio shown in Table 1 below were prepared according to a conventional method.

  The obtained 1st agent and 2nd agent were mixed by the weight ratio of Table 1 at room temperature just before use. The mixture was evaluated for each item according to the method described below.

Moreover, the viscosity of the mixture of the second agent and the first and second agents was measured by the following method:
50 g of the second agent was placed in a cylindrical glass sample tube each having a diameter of 35 mm and a height of 78 mm, immersed in a constant temperature phase at 25 ° C. for 30 minutes, then taken out from the constant temperature phase, and the viscosity at 25 ° C. was measured using a B type viscometer (TVB- 10M manufactured by Toki Sangyo Co., Ltd.), measured with a No. 4 rotor at 30 rpm for 1 minute, and the results were shown numerically. When it was 2000 mPa · s or less, it was measured at 30 rpm for 1 minute with a No. 3 rotor, and when it was 400 mPa · s or less, it was measured at 30 rpm for 1 minute with a No. 2 rotor. When the pressure was 100 mPa · s or less, the result was indicated as x.

  Regarding the viscosity of the mixture of the first agent and the second agent, the first agent and the second agent are mixed in the cylindrical glass sample tube having a diameter of 35 mm × the height of 78 mm, and the mixing ratio shown in Table 1 below is 50 g in total. Then, the lid was closed and the mixture was used in the same manner as described above until the first agent and the second agent were mixed.

1. Dyeability 100% gray hair bundle (human hair) 2 g was soaked in tap water for 1 hour and dried for 23 hours. A hair bundle obtained by repeating this process 5 times was designated as a test hair bundle A.

  The first agent and the second agent were mixed as described above according to the specified mixing ratio to obtain a mixture. Using 5 g of this mixture, it was applied to 2 g of test hair bundle A. Next, after standing at 30 ° C. for 30 minutes, washing with water, shampooing, and drying with hot air, the dyeability of these hair bundles was visually evaluated according to the following criteria.

  A: There is no unevenness and it is dyed uniformly.

  ○: There is almost no unevenness, and it is dyed uniformly.

  Δ: Some unevenness and lack of uniformity.

  X: Uneven and not uniformly dyed.

2. A black hair bundle (human hair) 4 g was touched with purified water in which 28% ammonia water 3%, 35% hydrogen peroxide water 6% and edetate disodium 0.2% were dissolved for 30 minutes, then washed with water. Prepare something that has been dried over time. Next, it was immersed in tap water for 1 hour and dried over 23 hours. A hair bundle obtained by repeating this process 5 times was designated as a test hair bundle B.

  The first agent and the second agent were mixed as described above according to the specified mixing ratio to obtain 10 g of a mixture. 10 g of this mixture was applied to 4 g of test hair bundle B. The feel of the hair bundle B for testing after being left at 30 ° C. for 30 minutes, washed with water, shampooed and dried with hot air was evaluated according to the following criteria.

  A: Comb street is very light and smooth.

  ○: Comb street is smooth without being caught, but heavy.

  (Triangle | delta): Comb street is bad and it gets caught a little.

  ×: Comb street is very bad and gets caught quite a bit.

3. Dye solubility When the first agent was prepared according to a conventional method, the solubility of the dye was evaluated according to the following criteria.

  A: Easily dissolves at room temperature.

  Δ: Dissolved by heating.

  X: Not completely dissolved.

4). Low temperature stability The first agent prepared according to a conventional method was put in a glass bottle and stored at 5C for one month, and the state was evaluated according to the following criteria.

  (Double-circle): It does not precipitate.

  Δ: Slightly precipitated.

  X: It precipitates in large quantities.

5. Viscosity When the first agent and the second agent were mixed according to the specified mixing ratio, the viscosity was evaluated according to the following criteria.

(Double-circle): It is easy to apply | coat and does not fall off.

  X: The viscosity drops and falls.

The comprehensive evaluation two-component hair dye needs to exhibit a high performance uniformly for the above five items, and even if the performance is inferior in any one item, it may cause a problem in commercialization. Therefore, when all of the above five items are ◎, the overall evaluation is ◎, and when any one of the five items is ○, the overall evaluation is っ て も even if other items have ◎. Similarly, if at least one of the five items has Δ, the overall evaluation Δ, and if even one of the five items has ×, the overall evaluation ×.
Table 1 shows the compositions and evaluation results of the examples and comparative examples.

  From Examples 1 to 4 and Comparative Examples 1 to 5, an excellent hair dyeing effect is obtained by setting the mixing ratio of the first agent and the second agent to 1: 5 to 20, and the finished touch is a conventional product. It was found that an oxidative hair dye that is lighter and smoother than that can be provided.

  In the combination of the first agent of Patent Document 1 containing a large amount of surfactant as in Comparative Examples 2 and 3 and the second agent of the present invention, the viscosity after mixing the first agent and the second agent decreases. However, dripping occurs during hair dyeing. As in Comparative Examples 4 and 5, the combination of the first agent of the present invention and the second agent of Patent Document 1 has a low viscosity and causes dripping.

Further, as apparent from Examples 1 and 2, a better feel was obtained by blending a cationic surfactant with the second agent. Moreover, the specific gravity of these hair dyes is about 1, and the total amount of the 1st agent and 2nd agent which are normally used for one hair dyeing is about 80-120g. Therefore, in consideration of easiness of mixing operation of the first agent and the second agent, the first agent necessary for one hair dyeing is 5 by setting the mixing ratio to 1: 5 to 1:20. ~ 20 ml would be sufficient. Therefore, as a product sold by combining the first agent and the second agent for one batch, the total volume of the commercial product is about 550 cm ^{3 to} 970 cm ³ , whereas the total volume is reduced by about 20 to 60%. It is possible to improve the efficiency of transportation and storage.

Claims (2)

  A two-component oxidative hair dye comprising a first agent containing a hair dye active ingredient and a second agent containing an oxidizing agent, wherein the second agent has a viscosity of 1000 to 10,000 mPa · s, A two-component oxidative hair dye used by mixing 5 to 20 parts by weight of the second agent with respect to 1 part by weight of the agent.   The two-component oxidation according to claim 1, wherein the product form is a form in which the first agent and the second agent are each filled in a container at a single use amount, and the volume of the first agent is 5 to 20 ml. Hair dye.