JP2010189336A - Oxidative hair dye - Google Patents

Abstract

[Problem] When dyeing in a broad sense of brown (brown) preferred by many consumers, it has excellent leveling at the boundary between new hair and pre-dyed hair, has no discoloration to matte color, and has long-lasting color Providing good oxidative hair dye.
(A) At least one dye precursor selected from the group consisting of paraphenylenediamine, toluene-2,5-diamine, and salts thereof, (B) metaaminophenol, metaaminophenol sulfate, resorcinol And at least one coupler selected from the group consisting of 2-methylresorcinol, (C) 1-hydroxyethyl-4,5-diaminopyrazole sulfate, and (D) an alkanolamine-containing tea-based oxidative hair dye Composition.
[Selection figure] None

Description

  The present invention relates to an oxidative hair dye which is excellent in leveling of hair and has good color.

  Currently, as a hair dye used for dyeing hair, the first agent contains an oxidative dye (dye precursor, coupler) and an alkali agent, and the second agent contains an oxidant. Hair is common. These are mixed and applied to the hair just before use. Moreover, in order to obtain a wide variety of color tones preferred by consumers, it is possible to combine various dye precursors and couplers as appropriate.

  However, many Asians, including Japanese, are essentially black hair, and the color in the range from dark dull brown to light brown is the most preferred, not only for the purpose of making gray hair inconspicuous, but also for the purpose of enjoying fashion. ing. In addition to the lightness difference between dark and bright, colors such as reddish, yellowish, and purpleish brown that are different in hue are also preferred. In fact, these are widely used under various names such as OO Brown and XX Beige.

  In order to obtain these various browns (browns) which are conventionally preferred by the most consumers, at least one dye precursor selected from at least paraphenylenediamine, toluene-2,5-diamine and their salts It is common to combine the body with the couplers metaaminophenol and resorcin. (Patent Document 1) Further, other dye precursors and couplers are appropriately added to the above combinations and adjusted to various color tones preferred by consumers.

  However, the combination of these oxidative dyes that give a conventional brown color (brown color) does not have sufficient color retention, and even if it does not brighten quickly or even brightly, the brown color that is originally a warm color system There is a problem of discoloration to a so-called mat color belonging to a cold color system which is not preferred by the customer. Furthermore, the connection between the new hair that has grown from the root and the already-dyed hair that has been dyed from the middle to the tip of the hair is insufficient. Even if it adjusts accordingly, there is a problem that it is difficult to finish cleanly and uniformly. This problem is particularly noticeable in gray hair dyeing that requires a high dye concentration compared to fashion dyeing, and further improvement is required.

  On the other hand, 1-hydroxyethyl-4,5-diaminopyrazole sulfate is a dye precursor used for red dyes, and it is known that bright orange to red to red purple can be obtained by combining with various couplers. It has been. However, conventionally, there has been no oxidative hair dye composition containing 1-hydroxyethyl-4,5-diaminopyrazole sulfate, which can dye hair in a brown color.

JP2008-74871

    The object of the present invention is, as mentioned above, excellent in leveling at the boundary between new hair and pre-dyed hair and matte color when dyeing in a broad sense of brown (brown) preferred by many consumers. It is to provide an oxidative hair dye having a good color without discoloration.

  As a result of intensive studies to solve the above problems, the present inventors have found that at least one dye precursor selected from paraphenylenediamine, toluene-2,5-diamine, and salts thereof, metaamino 1-hydroxyethyl-4,5-diaminopyrazole sulfate and alkanolamine are added to a tea-based oxidative hair dye composition containing at least one coupler selected from phenol, metaaminophenol sulfate, resorcin, and 2-methylresorcinol. When combined, the 1-hydroxyethyl-4,5-diaminopyrazole sulfate, which is a red dye precursor, is blended, and the hair can be dyed brown, and the above-mentioned problems are solved. I found that it could be overcome.

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

Item 1. The following components (A) to (D)
(A) at least one dye precursor selected from the group consisting of paraphenylenediamine, toluene-2,5-diamine, and salts thereof;
(B) at least one coupler selected from the group consisting of metaaminophenol, metaaminophenol sulfate, resorcin, and 2-methylresorcinol;
A tea-based oxidative hair dye composition containing (C) 1-hydroxyethyl-4,5-diaminopyrazole sulfate and (D) alkanolamine.

Item 2. The oxidation of claim | item 1 which contains component (A)-(D) in the following ratio when the whole hair dye composition of the state which mixed the 1st agent and the 2nd agent was made into 100 weight%. Hair dye.
(A) at least one dye precursor selected from paraphenylenediamine, toluene-2,5-diamine, and salts thereof: 0.01 to 4% by weight;
(B) at least one coupler selected from metaaminophenol, metaaminophenol sulfate, and resorcin: 0.01 to 3% by weight;
(C) 1-hydroxyethyl-4,5-diaminopyrazole sulfate: 0.05 to 1% by weight,
(D) Alkanolamine: 0.5 to 10% by weight.

  According to the invention, at least one dye precursor selected from paraphenylenediamine, toluene-2,5-diamine, and salts thereof, selected from metaaminophenol, metaaminophenol sulfate, resorcin, 2-methylresorcinol By using an oxidative hair dye composition containing at least one coupler, 1-hydroxyethyl-4,5-diaminopyrazole sulfate, and alkanolamine, a broad brown color (brown series) preferred by many consumers ) Is excellent in leveling at the boundary between new hair and already-dyed hair, and there is no discoloration to a matte color, so that the color durability can be improved.

FIG. 1 shows a table extracted from a color chart of a JIS standard color chart and glossy plate (conforming to JIS Z 8721) and schematically shown. FIG. 2 shows a table extracted from the color chart of the JIS standard color chart and glossy plate (conforming to JIS Z 8721) and schematically shown. FIG. 3 shows a table extracted from the color chart of the JIS standard color chart and glossy plate (conforming to JIS Z 8721) and schematically shown. FIG. 4 shows a table extracted from the color chart of the JIS standard color chart and glossy plate (conforming to JIS Z 8721) and schematically shown. FIG. 5 shows a table extracted from the color chart of the JIS standard color chart and glossy plate (conforming to JIS Z 8721) and schematically shown. FIG. 6 shows a table extracted from the color chart of the JIS standard color chart and glossy plate (conforming to JIS Z 8721) and schematically shown.

  The present invention is described in detail below.

The present invention includes the following components (A) to (D)
(A) at least one dye precursor selected from the group consisting of paraphenylenediamine, toluene-2,5-diamine, and salts thereof;
(B) at least one coupler selected from the group consisting of metaaminophenol, metaaminophenol sulfate, resorcin, and 2-methylresorcinol;
A tea-based oxidative hair dye composition containing (C) 1-hydroxyethyl-4,5-diaminopyrazole sulfate and (D) alkanolamine is provided.

In the hair dye composition of the present invention, “brown”, “brown”, and “brown” include lightly dark, dull brown to light brown, and are also reddish or yellowish. (In this specification, these color ranges are defined by the name brown (brown)) in a broad sense.)
More specifically, this broad brown (brown) is a circle in the tables described in FIGS. 1 to 6 when observing a human hair dyed under lighting equipment that is considered to be close to natural light. The color tone in the range indicated by. 1 to 6 are extracted from a color chart of a JIS standard color chart and a glossy plate (based on JIS Z 8721), and are schematically shown.

  The oxidative hair dye composition of the present invention comprises at least one dye precursor selected from paraphenylenediamine, toluene-2,5-diamine, and salts thereof, metaaminophenol, metaaminophenol sulfate, resorcin, 2 -Containing at least one coupler selected from methylresorcinol, 1-hydroxyethyl-4,5-diaminopyrazole sulfate, and alkanolamine. In addition, a sulfate and hydrochloride are mentioned as a salt of paraphenylenediamine and toluene-2,5-diamine.

  The form of the oxidative hair dye composition of the present invention can be used in various forms as long as the effect of the present invention is achieved, and may be liquid, cream, foam, gel, emulsion, or powder. . The first agent may be in the form of cream and the second agent may be in the form of an emulsion. The mixing ratio of the first agent and the second agent is not limited, but preferably the first agent is paraphenylene. At least one dye precursor selected from diamine, toluene-2,5-diamine, and salts thereof, at least one coupler selected from metaaminophenol, metaaminophenol sulfate, resorcin, 2-methylresorcinol; -It is a cream containing hydroxyethyl-4,5-diaminopyrazole sulfate and alkanolamine, and the second agent is a cream containing an oxidizing agent, and the mixing ratio is 1: 1 to 1: 2. Hereinafter, in the present specification, the mixing ratio means a weight ratio unless otherwise stated).

  In another form, the first agent is at least one dye precursor selected from paraphenylenediamine, toluene-2,5-diamine, and salts thereof, metaaminophenol, metaaminophenol sulfate, resorcin, 2- Liquid or cream-like composition containing at least one coupler selected from methylresorcinol, 1-hydroxyethyl-4,5-diaminopyrazole sulfate, and an oxidizing agent, and a second agent containing an alkanolamine The combination which is is mentioned.

  The content of at least one dye precursor selected from paraphenylenediamine, toluene-2,5-diamine, and salts thereof is not particularly limited as long as the effect of the present invention is exhibited. When the whole hair dye composition in a state where two agents are mixed is taken as 100% by weight, the above-mentioned dye precursor content (the total content when two or more types are included) is preferably 0.01-4. % By weight, more preferably 0.05 to 3% by weight. By setting the dye precursor content in the above range, sufficient dyeability can be obtained, and even in a creamy form, the dye precursor is sufficiently dissolved, so that the stability is good.

  The content of at least one coupler selected from metaaminophenol, sulfated metaaminophenol, resorcin, and 2-methylresorcinol (when two or more types are included, the total content thereof) is particularly effective if the effect of the present invention is exhibited. Although it is not limited, When the whole hair dye composition in the state which mixed the 1st agent and the 2nd agent was 100 weight%, Preferably it is 0.01 weight% or more, More preferably, it is 0.01-3 weight %, And more preferably 0.05 to 2% by weight. By setting the content of the coupler within the above range, it is preferable because sufficient dyeability can be obtained.

  The content of 1-hydroxyethyl-4,5-diaminopyrazole sulfate exhibits the effect of the present invention, and is the first from the viewpoint of staining a broad sense of brown (brown) rather than a bright red color or the like. 0.05 to 1% by weight is preferable, and 0.1 to 0.7% by weight is more preferable when the entire hair dye composition in a state where the agent and the second agent are mixed is 100% by weight. By setting the content of 1-hydroxyethyl-4,5-diaminopyrazole sulfate in the above range, the leveling property and good color durability, which are the effects of the present invention, can be obtained, and broad brown (brown) Can be toned.

  The alkanolamine is not particularly limited, and a wide variety of known alkanolamines can be used, and examples thereof include compounds represented by the following general formula:

[In formula, R < ₁ > -R < ₃ > is the same or different, and shows a hydrogen atom or a C1-C6 linear or branched hydroxyalkyl group. ].
More specifically, the alkanolamine includes, for example, monoethanolamine, diethanolamine, triethanolamine, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol. , Tetrakis (2-hydroxyisopropyl) ethylenediamine, monoisopropanolamine, and the like, and preferably include monoethanolamine, 2-amino-2-methyl-1-propanol, monoisopropanolamine, and the like. These can be used alone or in admixture of two or more. The content (the total content when two or more types are included) is 0.5 to 10 when the total amount of the hair dye composition in which the first agent and the second agent are mixed is 100% by weight. % By weight, preferably 1-7% by weight. By adjusting the content of alkanolamine to the above range, hair damage is suppressed, and even if it contains 1-hydroxyethyl-4,5-diaminopyrazole sulfate, it is toned in a broad sense of brown (brown). This is preferable because it provides uniform dyeing and good color durability.

Other Components-Oxidative Dye and Direct Dye The oxidative hair dye composition of the present invention may contain an oxidative dye other than the aforementioned dye precursor and coupler. These are not particularly limited, and widely known ones can be used. More specifically, 5-aminoorthocresol, 5-aminoorcresol sulfate, 5- (2-hydroxyethylamino) -2-methylphenol, 2,4-diaminophenoxyethanol hydrochloride, 2,4-diaminophenol hydrochloride, N-phenylparaphenylenediamine hydrochloride, metaphenylenediamine hydrochloride, orthoaminophenol, N-phenylparaphenylenediamine acetate, 2,6-diaminopyridine, 2,6-diaminopyridine sulfate, 1,5-dihydroxynaphthalene, diphenylamine, toluene -3,4-diamine, α-naphthol, paraaminophenol, paramethylaminophenol, hydroquinone, pyrogallol, N-phenylparaphenylenediamine, phloroglucin, metaphenylenediamine, gallic acid, orthoa sulfate Nophenol, orthochloroparaphenylenediamine sulfate, 4,4'-diaminodiphenylamine sulfate, paraaminophenol sulfate, paramethylaminophenol sulfate, 2- (2-hydroxyethyl) -1,4-phenylenediammonium sulfate, hydroxyethyl sulfate Examples thereof include paraphenifenediamine and metaphenylenediamine sulfate. You may use the said dye individually or in mixture of 2 or more types.

  Further, the oxidative hair dye composition of the present invention may contain a direct dye. 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.

  Since direct dyes have a lower fastness to hair washing than oxidative dyes, it is preferable not to use them or to use them in small amounts. Specifically, the content of the direct dye (when two or more types are included, the total content) is 100% by weight of the entire hair dye composition in which the first agent and the second agent are mixed. Furthermore, it is 0.3% by weight or less, preferably 0.1% by weight or less.

  The content of all the dyes including the oxidation dye and the direct dye is not particularly limited, but from the viewpoint of sufficient dyeability and economy, the hair dye composition in a state where the first agent and the second agent are mixed. When the whole is 100% by weight, it is 0.1 to 6% by weight, preferably 0.2 to 5% by weight.

Other Components-Alkaline Agent An alkaline agent can be used in the oxidative hair dye composition of the present invention for swelling of the hair, penetration of the dye into the hair, and improvement of the decolorizing power of the hair. As the alkali agent, in addition to the above-mentioned alkanolamine, known alkali agents can be widely used. For example, ammonia water, ammonium carbonate, ammonium hydrogen carbonate, ammonium sulfate, sodium carbonate, potassium carbonate, sodium phosphate, phosphoric acid Examples thereof include disodium hydrogen, sodium hydroxide, potassium hydroxide and the like. In view of dye permeability and scalp irritation, aqueous ammonia, ammonium carbonate, and ammonium bicarbonate are preferred. The alkali agents can be used alone or in admixture of two or more.

  The content of the alkaline agent (the total content when two or more types are included) is appropriately set according to the desired brightness and the like, and is not particularly limited, but considering the risk of hair damage when blended in large amounts, When the whole hair dye composition in a state where the first agent and the second agent are mixed is 100% by weight, it is 0.1 to 10% by weight, and preferably 0.5 to 7% by weight.

Other Components-Higher Alcohol A higher alcohol may be further added to the oxidative hair dye composition of the present invention. 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.) and dyeability.

  The blending amount can be appropriately set within the range where the effects of the present invention are exhibited. However, when the total amount of the hair dye composition in which the first agent and the second agent are mixed is 100% by weight, It can be made into 0.5 to 20 weight% in total in conversion to a pure part. When the amount is less than 0.5% by weight, sufficient stability, operability and dyeability cannot be obtained, and even when the amount exceeds 20% by weight, an increase in increase is not recognized. Furthermore, when considering the effect and economy, the range of 1 to 15% by weight is preferable, and the range of 1.5 to 10% by 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, myristyl alcohol, cetanol, stearyl alcohol, behenyl alcohol, cetostearyl alcohol, oleyl alcohol, and hexyldecanol are particularly preferable from the viewpoint of stability.

Other Components-Surfactant A surfactant may be further added to the oxidative hair dye composition of the present invention. The surfactant is added for the same purpose as the higher alcohol.

  The blending amount can be appropriately set within the range where the effects of the present invention are exhibited. However, when the total amount of the hair dye composition in which the first agent and the second agent are mixed is 100% by weight, the surfactant is used. In total, it can be made 0.5 to 20% by weight in terms of the pure content. By containing the surfactant in the above range, sufficient stability, operability and dyeability can be obtained, which is preferable. Furthermore, when considering the effect and economy, the range of 1 to 15% by weight is preferable, and the range of 1.5 to 10% by weight is more preferable.

  Moreover, as a surfactant used for this invention, a well-known thing can be used widely. Specific examples include nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants. More specifically, it is more effective to add at least one of them as follows.

  Nonionic surfactants include, for example, polyoxyethylene isostearyl ether, polyoxyethylene isocetyl ether, polyoxyethylene octyldodecyl ether, polyoxyethylene oleyl ether, polyoxyethylene oleyl cetyl ether, polyoxyethylene stearyl ether , Polyoxyethylene cetyl ether, polyoxyethylene cetostearyl ether, polyoxyethylene tridecyl ether, polyoxyethylene butyl ether, polyoxyethylene behenyl ether, polyoxyethylene myristyl ether, polyoxyethylene lauryl ether, polyoxyethylene octylphenyl ether , Polyoxyethylene dinonyl phenyl ether, polyoxyethylene nonyl phenyl ether, Glyceryl nodecylenate, glyceryl myristate, glyceryl monostearate, glyceryl monoisostearate, polyglyceryl myristate, polyglyceryl stearate, polyglyceryl isostearate, polyglyceryl oleate, polyglyceryl distearate, polyglyceryl diisostearate, polystearic acid poly Examples thereof include oxyethylene glyceryl, polyoxyethylene glyceryl oleate, polyethylene glycol monostearate, polyethylene glycol distearate, and polyethylene glycol monooleate.

  Examples of the cationic surfactant include ethyl lanolin sulfate fatty acid aminopropylethyldimethylammonium chloride, alkyltrimethylammonium chloride, octadecylammonium chloride, octyldihydroxyethylmethylammonium chloride, dialkyl (12-15) dimethylammonium chloride, dialkyl chloride ( 14-18) Dimethylammonium, dicocoyldimethylammonium chloride, distearyldimethylammonium chloride, dicetyldimethylammonium chloride, di (polyoxyethylene) oleylmethylammonium chloride, sodium stearyldihydroxyethylbetaine chloride, stearyldimethylbenzylammonium chloride, chloride Stearyltrimethylammonium, cetyltrimethylammonium chloride, cetylpyrichloride Ni, benzalkonium chloride, benzethonium chloride, polyoxyethylene chloride (1) polyoxypropylene (25) diethylmethylammonium chloride, myristyldimethylbenzylammonium chloride, methylbenzethonium chloride, lauryltrimethylammonium chloride, laurylpyridinium chloride, alkylisobromide Examples include quinolinium, 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, lauroyl sarcosine sodium, lauroyl methyl β-alanine sodium, and lauroyl methyl Examples include taurine sodium.

  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.

  In view of good touch during and after hair dyeing, it is preferable to use a cationic surfactant. In view of improving the stability of the preparation, it is preferable to use a nonionic surfactant.

Other Components-Oil Agent An oil agent can be added to the oxidative hair dye composition of the present invention. As an oil agent, the well-known thing conventionally used for the oxidation hair dye can be used widely. Specifically, for example, olive oil, sesame oil, castor oil, coconut oil, jojoba oil, avocado oil, macadamia nut oil, shea fat, liquid paraffin, light isoparaffin, solid paraffin, petrolatum, lauric acid, myristic acid, stearic acid, olein Examples include acids, isopropyl myristate, isopropyl palmitate, isocetyl isostearate, decyl oleate, myristyl lactate, squalane, and microcrystalline wax. Moreover, highly polymerized methylpolysiloxane, dimethylsiloxane, methyl (polyoxyethylene) siloxane copolymer, methylphenylpolysiloxane, amino-modified silicone, and the like can be used.

  One or more of the above oil agents can be blended, and the blending amount of the oil agent (the total content when two or more types are included) is usually blended within the range where the effects of the present invention are exhibited. If it is, it will not be specifically limited. For example, the oil agent is 0.1 to 15% by weight, preferably 0.2 to 10% by weight, based on 100% by weight of the entire hair dye composition in which the first agent and the second agent are mixed. Formulated to be

Other components-oxidizing agent The oxidizing hair dye composition of the present invention may contain an oxidizing agent. As the oxidizing agent, a publicly known one used in the field of oxidative hair dyes can be widely used except for ammonium salts. Specifically, a substance that liberates oxygen upon contact with hydrogen peroxide or water can be used.

  More specifically, hydrogen peroxide (usually used as a 10-35% by weight aqueous solution), sodium perborate, potassium perborate, sodium percarbonate, sodium bromate (these remain as aqueous solutions or raw materials) 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 (if more than two types are included) is sufficient to oxidize all the oxidative dyes, and for the purpose of brightening the hair, sufficient oxygen is generated to decolorize. Although it will not specifically limit if it is an amount, 0.01-15 weight% when the whole hair dye composition in the state which mixed the 1st agent and the 2nd agent was 100 weight%, Preferably, it is 0.1. It is good to mix 1 to 10% by weight.

Other Components The hair dye composition of the present invention contains thioglycolic acid, calcium thioglycolate, ammonium thioglycolate, sodium sulfite for the purpose of suppressing oxidation of the oxidative dye before use and color formation unnecessarily. Antioxidants such as ascorbic acid, sodium ascorbate, ammonium ascorbate, propyl gallate, tocopherol, L-cysteine, homocysteine and N-acetyl-L-cysteine can be blended.

  In addition, a metal sequestering agent such as edetic acid, disodium edetate, tetrasodium edetate, sodium metaphosphate, and sodium polyphosphate can be blended for the purpose of preventing the color development of the oxidation dye by metal ions from being accelerated. .

  In addition, known solubilizers such as propylene glycol, ethylene glycol, glycerin, polyethylene glycol, polyhydric alcohols such as ethyl alcohol and isopropyl alcohol, and lower alcohols, hair protecting agents, flavoring agents, thickeners, polymer compounds, dyes UV absorbers, penetrants, wetting agents, stabilizers, hair nourishing agents, and the like may be appropriately added to such an extent that the performance of the oxidative hair dye of the present invention is not impaired.

  A 1st agent and a 2nd agent can be manufactured by melt | dissolving and mixing the above-mentioned component (A)-(D) and the above-mentioned arbitrary components in water. As water, purified water is usually blended. The blending amount of water is the balance when each component is blended in a predetermined amount, and the blending amount is preferably 100% by weight of the entire hair dye composition in a state where the first agent and the second agent are mixed. In this case, the amount is about 10 to 90% by weight.

Manufacturing method of 1st agent and 2nd agent The 1st agent and 2nd agent in the oxidation hair dye composition of this invention mix | blend all components, respectively with a well-known method, for example, both 1st agent and 2nd agent. It can be produced by mixing, or if necessary, mixing some components, heating and stirring and mixing, then cooling and adding the remaining components and mixing.

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.

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

  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 having the respective components and blending ratios shown in Tables 1 to 3 were prepared according to a conventional method.

  The obtained first agent and second agent are in a weight ratio of 1: 1 for the two-component oxidative hair dye described in Tables 1 and 2, and 1: 9 for the powder oxidative hair dye described in Table 3. Was mixed at room temperature immediately before use at a weight ratio of 2 and thoroughly mixed until there was no unevenness. Each item was evaluated by the half head test by the human head according to the below-mentioned evaluation method.

For half-head test subjects, a person who had used a commercially available oxidative hair dye 1 to 2 months ago, had a white hair rate of 10 to 90% in all heads, and had a hair length of 20 cm or more was selected. . The hair was divided into left and right parts, and the mixture of Comparative Example and Example was applied to each. At this time, separate applicators were used so that the respective drugs were not mixed.

  In Comparative Examples 1 to 3 and Examples 1 to 5, the total amount obtained by mixing 30 g of the first agent and 30 g of the second agent, and in Comparative Examples 4 and 6, the total amount of mixture of 5 g of the first agent and 45 g of the second agent. Was applied to each of the left and right sides. Each of the left and right application procedures was carried out in accordance with a conventional method, in which only the new hair part was applied within 10 minutes, and then 20 minutes later, it was applied to the already-dyed hair part. 30 minutes after the application of the new hair portion was completed, it was washed with water, shampooed and rinsed, and then completely dried with a dryer.

  The combinations of the half head tests performed are shown below.

1. Comparative Example 1 and Example 1
2. Comparative Example 1 and Example 2
3. Comparative Example 1 and Example 3
4). Comparative Example 1 and Example 4
5). Comparative Example 2 and Example 5
6). Comparative Example 3 and Example 5
7). Comparative Example 4 and Example 6
1. The finished color half-head test confirmed that the left and right finishes were finished with almost the same color and brightness by visual observation by a professional panelist (beautician). In order to strictly evaluate the leveling properties and color durability, which are evaluation items, it is important that the comparative examples and the examples have the same desired finished color tone. In Tables 1-3, the color tone at that time is described in general expression.

2. Immediate dyeing Immediately after the above-mentioned half head test, whether or not the brightness and color tone of the part that was new hair and the part that was already dyed was almost the same was evaluated according to the following criteria by visual observation by a professional panelist .

  A: The color tone and lightness are almost the same, and the border is hardly understood.

  ○: The color tone and brightness are almost the same, but the boundary can be easily distinguished.

  (Triangle | delta): A color tone or lightness is inconsistent and the connection of a boundary is unnatural.

  X: Color tone and lightness are inconsistent, and the boundary is clear.

3. After the color retention above the half-head test, asked to spend a normal life is the subject, the state after one month, was evaluated according to the following criteria by visual inspection of the expert panelists (hairdresser).

  A: It is slightly brighter and does not feel fading.

  ○: Although it is a little brighter, a dull feeling remains.

  Δ: Bright and almost dull.

  X: Almost fading and considerably brighter.

  In the case of such a tea-based hair dye, since it is designed to dye intentionally a dull color, it is not preferable that the hair color becomes bright, which means that the hair has faded.

  Tables 1 to 3 show the compositions and evaluation results of the examples and comparative examples.

  It was found that the dyeing compositions of Examples 1 to 4 containing 1-hydroxyethyl-4,5-diaminopyrazole sulfate and alkanolamine were very excellent in levelness and significantly improved in color tone. On the other hand, in Comparative Example 1 in which 1-hydroxyethyl-4,5-diaminopyrazole sulfate and alkanolamine were not added, both leveling and color retention were Δ, although they were at the level of conventional commercial products. Compared with Examples 1-4, it was greatly inferior. Further, as apparent from Examples 1 to 3, the effect of the present invention does not depend on the type of alkanolamine, and the range of the blending amount is the hair dyeing state in which the first agent and the second agent are mixed. It was found that when the entire agent composition was 100% by weight, the desired effect was obtained at 0.5 to 10% by weight. In addition, from Examples 1 and 4, as the essential component (dye precursor) of the oxidative hair dye composition, the desired effect can be obtained by using either paraphenylenediamine hydrochloride or toluene-2,5-diamine sulfate. I understood it.

  From Example 5 and Comparative Examples 2-3, it contains 1-hydroxyethyl-4,5-diaminopyrazole sulfate and alkanolamine, and the blending amount of 1-hydroxyethyl-4,5-diaminopyrazole sulfate is It was found that when the entire hair dye composition in a state where the first agent and the second agent are mixed is 100% by weight, the desired effect can be obtained at 0.05% by weight. Further, in Comparative Example 3, it is expected that the leveling and color durability are improved by increasing the blending amount of 1-hydroxyethyl-4,5-diaminopyrazole sulfate, but it contains alkanolamine. As a result, the color became bright orange-red and did not become the same brown color as in Example 5.

  Example 6 and Comparative Example 4 are examples of combinations of powder and liquid form, and it was found that the desired effect can be obtained similarly. From Examples 5 and 6, the blending amount of 1-hydroxyethyl-4,5-diaminopyrazole sulfate was 100% by weight of the entire hair dye composition in a state where the first agent and the second agent were mixed. In some cases, it was found that the desired effect was obtained in the range of 0.05 to 1% by weight.

Claims (1)

The following components (A) to (D)
(A) at least one dye precursor selected from the group consisting of paraphenylenediamine, toluene-2,5-diamine, and salts thereof;
(B) at least one coupler selected from the group consisting of metaaminophenol, metaaminophenol sulfate, resorcin, and 2-methylresorcinol;
A tea-based oxidative hair dye composition containing (C) 1-hydroxyethyl-4,5-diaminopyrazole sulfate and (D) alkanolamine.

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