JP2008195663A - Hairdye composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hairdye composition not only exhibiting hair-dyeing power but also easily providing heightened uniformity of color in dyed hair. <P>SOLUTION: The hairdye composition contains (A) a direct dye, (B) an organic solvent and (C) a glycol ether. The distribution coefficient of the organic solvent (B) in water/octanol is within the range of 0.3-3.0. The glycol ether (C) is represented by general formula (1) (wherein, R<SP>1</SP>is a 10-22C hydrocarbon group which may have an unsaturated bond; R<SP>2</SP>to R<SP>5</SP>are each a hydrogen atom or a 1-3C hydrocarbon group; and n is an integer of 0-3). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hair dye composition containing a direct dye.

The hair dye composition for directly dyeing hair with a dye contains an organic solvent. In such a hair dye composition, the dye is directly penetrated into the hair by the penetrating power of the organic solvent into the hair. And the direct dye which permeate | transmitted hair becomes easy to be fixed to hair, and it becomes easy to maintain the dyed state. Conventionally, proposals have been made for such hair dye compositions to improve leveling and the like in dyed hair. Patent document 1 has proposed improving the leveling property of acidic hair dye by mix | blending sugar derivative ether. Patent Document 2 proposes a technique for enhancing dyeability by blending an amphiphilic compound having a liquid crystal structure. Patent Document 3 proposes a technique for improving leveling by a combination of specific dyes. Patent Document 4 proposes a technique for improving leveling by mixing a specific peptide. Patent Document 5 proposes a technique for improving leveling by blending a specific polymer and a protein hydrolyzate. Patent Document 6 proposes a blend of a hydroxyalkyl polyhydric alcohol ether compound in a hair conditioning agent.
Japanese Patent Application Laid-Open No. 07-228513 Japanese Patent Application Laid-Open No. 08-099845 Japanese National Patent Publication No. 06-505984 JP 2001-302472 A JP 2002-338443 A JP 2004-161651 A

  By the way, the cuticle that covers the surface of the hair is composed of a hydrophobic substance as a main component, and plays a role of keeping the hair in a healthy state by protecting the region inside the hair. However, hair is often damaged by being affected by chemical influences, physical influences, etc., and the cuticle having hydrophobic properties is partially lost in the damaged hair. Thus, in the part where the cuticle is lost, the hydrophobicity is lower than the surroundings. Further, the loss of the cuticle is not a phenomenon that occurs throughout the hair, but occurs intensively, for example, at the hair tip portion. That is, in the damaged hair, the hydrophobic variation in the surface occurs. When the hair dye composition is applied to such hair, since the affinity between the hair surface and the organic solvent is partially different, the penetrating power of the organic solvent to the hair acts partially differently. As a result, uneven color tone tends to occur in the dyed hair.

  In patent document 1, the improvement of leveling property is confirmed as a result of being able to adjust hair to hair uniformly by the mixing | blending of the branched fatty acid ether induced | guided | derived from sugar. In Patent Document 2, an improvement in dyeing power has been confirmed. However, Patent Documents 1 and 2 do not discuss the leveling property of hair in which variations in hydrophobicity occur. In Patent Document 3, although the level dyeing property is enhanced by a combination of specific dyes, the point that the dye is directly penetrated into the hair by the penetrating power of the organic solvent is not studied, so that the hair dyeing power is sufficiently obtained. I am concerned that there is no point.

  In patent documents 4 and 5, it is possible to adjust the state of hair with proteins. However, since the proteins disclosed in Patent Documents 4 and 5 are hydrophilic, an effect of directly adjusting the penetrating ability of the dye at the damaged site of hair cannot be expected. For this reason, the leveling property in the dyed hair cannot be sufficiently obtained. On the other hand, a technique for coating hair with a hydrophobic compound such as silicone is also conceivable in order to directly adjust the penetrating power of the dye. However, hydrophobic compounds such as silicone may excessively prevent direct dye penetration, and such measures make it difficult to exert hair dyeing power.

As described above, there is still room for improvement with respect to a formulation that exhibits hair dyeing power and improves the uniformity of the color tone after dyeing on hair with hydrophobic variations.
The present invention has been made by finding the action effect of a specific glycol ether in a formulation in which the penetrating power of a direct dye is enhanced by an organic solvent. An object of the present invention is to provide a hair dye composition that can easily exhibit the hair dyeing power and can easily improve the uniformity of the color tone after dyeing.

  In order to achieve the above object, the hair dye composition of the invention described in claim 1 is a hair dye composition containing (A) a direct dye, (B) an organic solvent, and (C) a glycol ether. The water / octanol partition coefficient of the (B) organic solvent is in the range of 0.3 to 3.0, and the (C) glycol ether is represented by the following general formula (1).

一般式（１）中、Ｒ^１は炭素数１０〜２２の炭化水素基を示し、該炭化水素基は不飽和結合を有していてもよい。Ｒ^２〜Ｒ^５は、水素原子又は炭素数１〜３の炭化水素基を示し、ｎは０〜３の整数を示す。

In the general formula (1), R ¹ represents a hydrocarbon group having 10 to 22 carbon atoms, and the hydrocarbon group may have an unsaturated bond. R ² to R ⁵ is a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms, n is an integer of 0 to 3.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the organic solvent (B) and the glycol ether (C) are contained in a mass ratio of 100: 1 to 1: 1. To do.

  In the invention of claim 3, in the invention of claim 1 or claim 2, the organic solvent (B) is selected from benzyl alcohol, benzyloxyethanol, phenoxyisopropanol, diethylene glycol monophenyl ether, and phenethyl alcohol. The gist is at least one kind.

  According to the present invention, it is easy to exhibit the hair dyeing power and improve the uniformity of the color tone after dyeing.

Hereinafter, embodiments of the present invention will be described in detail.
The hair dye composition of this embodiment contains (A) a direct dye, (B) an organic solvent, and (C) a glycol ether. (B) The water / octanol partition coefficient of the organic solvent is in the range of 0.3 to 3.0. (C) The glycol ether is represented by the following general formula (1).

一般式（１）中、Ｒ^１は炭素数１０〜２２の炭化水素基を示し、該炭化水素基は不飽和結合を有していてもよい。Ｒ^２〜Ｒ^５は、水素原子又は炭素数１〜３の炭化水素基を示し、ｎは０〜３の整数を示す。

In the general formula (1), R ¹ represents a hydrocarbon group having 10 to 22 carbon atoms, and the hydrocarbon group may have an unsaturated bond. R ² to R ⁵ is a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms, n is an integer of 0 to 3.

  (A) The direct dye is a dye that is not reactive and can develop color by itself, and is blended for dyeing hair. Specific examples of direct dyes include nitro dyes, acid dyes, basic dyes (cationic dyes), and disperse dyes.

  The nitro dye is preferably 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, because of its excellent hair dyeing power. Picramic acid, picric acid and their salts, HC Blue No.2, HC Blue No.5, HC Blue No.6, HC Blue No.9, HC Blue No.10, HC Blue No.11, HC Blue No .12, HC Blue No.13, HC Orenge No.1, HC Orenge No.2, HC Orenge No.3, HC Red No.1, HC Red No.3, HC Red No.7, HC Red No.10 , HC Red No. 11, HC Red No. 13, HC Red No. 14, HC Violet No. 1, HC Violet No. 2, HC Yellow No. 2, HC Yellow No. 4, HC Yellow No. 5, HC Yellow No. 6, HC Yellow No. 9, HC Yellow No. 10, HC Yellow No. 11, HC Yellow No. 12, HC Yellow No. 13, HC Yellow No. 14, HC Yellow No. 15 etc. .

  As the acid dyes, Red No. 2, Red No. 3, Red No. 102, Red No. 104 (1), Red No. 105 (1), Red No. 106, Red No. 201, Red No. 227, Red No. 230 ( 1) Red 230 (2), Red 231, Red 232, Red 401, Red 502, Red 502, Red 503, Red 504, Red 506, Yellow 4, Yellow 5, Yellow 202 (1), yellow 202 (2), yellow 203, yellow 402, yellow 403 (1), yellow 406, yellow 407, orange 205, orange 207, orange 402 No. 3, Green No. 3, Green No. 204, Green No. 205, Green No. 401, Green No. 402, Purple No. 401, Blue No. 1, Blue No. 2, Blue No. 202, Blue No. 203, Blue No. 205, Brown No. 201 , Black 401 etc.

  Basic dyes include Basic Blue 3, Basic Blue 6, Basic Blue 7, Basic Blue 9, Basic Blue 26, Basic Blue 41, Basic Blue 47, Basic Blue 99, Basic Brown 4, Basic Brown 16, Basic Brown 17, Basic Green 1, Basic Green 4, Basic Orange 1, Basic Orange 2, Basic Orange 31, Basic Orange 31, Basic Red 1, Basic Red 2, Basic Red 22, Basic Red 46, Basic Red 51, Basic Red 76, Basic Red 118, Basic Violet 1, Basic Violet 3, Basic Violet 4, Basic Violet 10, Basic Violet 11: 1, Basic Violet 14, Basic Violet 16, Basic Yellow 11, Basic Yellow 28, Basic Yellow 57, Basic Yellow 87, and the like.

Disperse dyes include Disperse Black 9, Disperse Blue 1, Disperse Blue 3, Disperse
Examples include Blue 7, Disperse Brown 4, Disperse Orange 3, Disperse Red 11, Disperse Red 15, Disperse Red 17, Disperse Violet 1, Disperse Violet 4, Disperse Violet 15.

  Other direct dyes include 1-amino-4-methylanthraquinone, 1,4-diaminoanthraquinone, and salts thereof, HC Blue No. 4, HC Blue No. 7, HC Blue No. 8, HC Blue No. 14, HC Brown No.1, HC Brown No.2, HC Green No.1, HC Orenge No.5, HC Red No.8, HC Red No.9, HC Yellow No.7, HC Yellow No.8, In addition, the direct dyes defined by the “Ministerial Ordinance for Determining Tar Colors that can be Used in Pharmaceuticals” (announced in 1966, Ministry of Health and Welfare) are included. These direct dyes may be blended singly or in combination of two or more.

Among direct dyes, acid dyes are preferred from the viewpoint that dyed hair tends not to fade.
The content of the direct dye is preferably 0.05 to 3.0% by mass, more preferably 0.2 to 1.0% by mass. If the content of the direct dye is less than 0.05% by mass, sufficient hair dyeing power may not be obtained. On the other hand, if it exceeds 3.0% by mass, the dispersibility of the direct dye is lowered and precipitation may occur.

  (B) The organic solvent is blended in order to allow the dye to penetrate directly into the hair. The water / octanol partition coefficient of the organic solvent is in the range of 0.3 to 3.0, preferably in the range of 0.4 to 2.0.

The water / octanol partition coefficient [log (P _OW )] is a coefficient indicating the degree to which the organic solvent is distributed in the water phase and the octanol phase, and is defined by the following formula (2).
log (P _OW ) = log ([P _O ] / [P _W ]) (2)
[P _O ]: Number of moles of organic solvent in octanol phase [P _W ]: Number of moles of organic solvent in water phase For example, an organic solvent having a log (P _OW ) value of 1 is more octanol than water. On the other hand, 10 times the amount in terms of moles is dissolved. For example, an organic solvent having a log (P _OW ) value of 2 is dissolved in an amount 100 times that of octanol in terms of moles rather than water. That is, the higher the log (P _OW ) value of the organic solvent, the higher the hydrophobicity of the organic solvent.

  When the water / octanol partition coefficient of the organic solvent is less than 0.3, the hydrophilicity is too high, so that it is difficult to obtain an effect of directly penetrating the dye into the hair. On the other hand, when the partition coefficient exceeds 3.0, the hydrophobicity is too high, so that the action of directly infiltrating the dye into the hair is inhibited.

  The water / octanol partition coefficient of the present embodiment is determined by the Organization for Economic Cooperation and Development (OECD) Test Guidelines (OECD Board of Directors Decision “C (81) 30 Final Attachment (1)”) 107 or Japanese Industrial Standard Z7260-107 ( 2000) “Measurement of partition coefficient (1-octanol / water) —flask immersion method” and a method defined in OECD test guideline 117, and a value measured under a temperature condition of 25 ° C.

  Examples of the organic solvent having a water / octanol partition coefficient in the above-described range include monohydric alcohols having 4 to 8 carbon atoms, ethylene glycol alkyl ethers, aromatic alcohols, cyclic alcohols, N-alkylpyrrolidones, and alkylene carbonates. Examples of the monohydric alcohol having 4 to 8 carbon atoms include n-butanol, isobutanol, n-pentanol, n-hexanol, n-heptanol, n-octanol and the like. Examples of the ethylene glycol alkyl ether include ethylene glycol mono n-butyl ether. Aromatic alcohols include benzyl alcohol, 2-phenylethyl alcohol, cinnamyl alcohol, 1-phenoxy-2-propanol, phenyl diglycol, α-methylbenzyl alcohol, dimethylbenzyl carbinol, benzyloxyethanol, phenoxyethanol, phenoxyisopropanol , P-anisyl alcohol, diethylene glycol monophenyl ether, phenethyl alcohol and the like. Examples of the cyclic alcohol include cyclohexanol. Examples of N-alkylpyrrolidone include N-methylpyrrolidone, N-ethylpyrrolidone, N-octylpyrrolidone and the like. Examples of the alkylene carbonate include ethylene carbonate and propylene carbonate. These organic solvents may be blended alone or in combination of two or more.

  Among the above organic solvents, it is preferable that the organic solvent is at least one selected from benzyl alcohol, benzyloxyethanol, phenoxyisopropanol, diethylene glycol monophenyl ether, and phenethyl alcohol, from the viewpoint that the hair dyeing power is remarkably easily exhibited. .

  The content of the organic solvent in the hair dye composition is preferably 0.1 to 20% by mass, more preferably 0.5 to 18% by mass, and still more preferably 1 to 15% by mass. When the content of the organic solvent is less than 0.1% by mass, there is a possibility that the penetrating power of the direct dye to the hair cannot be sufficiently obtained. On the other hand, if the content of the organic solvent exceeds 20% by mass, the unpleasant odor of the organic solvent may increase or the hair dyeing power may be reduced.

  (C) Glycol ether is a compound represented by the above general formula (1), and is blended in order to exhibit the penetrating power of the organic solvent in a well-balanced manner in the hair where the variation in hydrophobicity has occurred. In addition, since the water / octanol distribution coefficient of (C) glycol ether exceeds 3, it is not included in the (B) organic solvent. Such glycol ether is preferably at least one selected from lauryl glycol hydroxypropyl ether and (lauryl / myristyl) glycol hydroxypropyl ether.

  The content of the glycol ether in the hair dye composition is preferably 0.01 to 20.0% by mass, more preferably 0.01 to 15.0% by mass, and still more preferably 0.02 to 10.0% by mass. %. When the content of this glycol ether is 0.01 mass or more, the effect of exerting the osmotic power of the organic solvent in a well-balanced manner becomes more remarkable. On the other hand, when the content of the glycol ether is 20.0% by mass or less, the hair dyeing power is more easily exhibited.

  The hair dye composition preferably contains (B) an organic solvent and (C) a glycol ether in a mass ratio of 100: 1 to 1: 1. In the range of this mass ratio, the effect of suppressing hair dyeing power and fading after hair dyeing is easily obtained. Moreover, it becomes easy to exhibit the outstanding osmotic force also in a site | part with few damages.

  In the hair dye composition of the present embodiment, water is used as a dispersion medium or solvent for the above-described components. Moreover, a hydrophilic organic solvent, a pH adjuster, a thickener, an oil component, surfactant, etc. can also be mix | blended with a hair dye composition as needed.

  Examples of the hydrophilic organic solvent include monohydric alcohols having 1 to 3 carbon atoms (lower alcohols), glycols and glycerols as polyhydric alcohols, and diethylene glycol lower alkyl ethers. Examples of the monohydric alcohol having 1 to 3 carbon atoms include methanol, ethanol, propanol, and isopropanol. Examples of glycols include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, hexylene glycol, and 1,3-butylene glycol. Examples of glycerins include glycerin, diglycerin, and polyglycerin. Examples of the diethylene glycol lower alkyl ether include diethylene glycol monoethyl ether (ethyl carbitol).

  The pH adjuster is preferably blended in order to increase the hair dyeing power and to suppress fading after hair dyeing. Examples of the pH adjuster include inorganic acids, inorganic acid salts, organic acids, acids such as organic acid salts, and alkalis. Examples of the inorganic acid include hydrochloric acid, sulfuric acid, nitric acid, acetic acid, phosphoric acid and the like. Examples of inorganic acid salts include sodium salts, potassium salts, and ammonium salts. Examples of the organic acid include citric acid, glycolic acid, succinic acid, tartaric acid, lactic acid, malic acid, levulinic acid, acetic acid, butyric acid, valeric acid, oxalic acid, maleic acid, fumaric acid, and mandelic acid. Examples of the organic acid salt include sodium salt, potassium salt, ammonium salt and the like. Examples of alkalis include ammonia, alkanolamines, organic amines (2-amino-2-methyl-1,3-propanediol, guanidine, etc.), inorganic alkalis (sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, etc.) ), Basic amino acids (arginine, lysine, etc.) and their salts. Specific examples of the alkanolamine include monoethanolamine, diethanolamine, triethanolamine, monopropanolamine, monoisopropanolamine, dipropanolamine, tripropanolamine, 2-amino-2-methyl-1,3-propanediol, 2 -Amino-2-methyl-1-propanol, 2-amino-2-hydroxymethyl-1,3-propanediol and the like.

  For example, when an acidic dye is blended as a direct dye, the pH of the hair dye composition is preferably adjusted to 1 to 5, more preferably 2 to 4.5 by blending a pH adjuster. For example, when a basic dye is blended as the direct dye, the pH of the hair dye composition is preferably adjusted to 7.5 to 11, more preferably 8 to 10 by blending a pH adjuster.

  The thickener is preferably blended in order to enhance the hair dyeing power and suppress discoloration after hair dyeing. Examples of thickeners include gum arabic, carrageenan, galactan, guar gum, quince seed gum, locust bean gum, tragacanth gum, pectin, mannan, starch, xanthan gum, hydroxyalkylxanthan gum, dextran, hyaluronic acid, curdlan, succinoglucan, Natural polymers such as gelatin, collagen, casein, albumin, cellulose polymers such as methylcellulose, ethylcellulose, hydroxyethylcellulose, sodium carboxymethylcellulose, hydroxypropylmethylcellulose, starch polymers such as carboxymethyl starch, methyl starch, soluble starch, Semi-synthetic polymers such as alginates and alginate polymers such as propylene glycol alginate, carboxy Vinyl polymer, polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl methyl ether, sodium polyacrylate, polyethylene oxide, ethylene oxide / propylene oxide block copolymer, polyacrylamide, acrylamide / acrylamide-2-methylpropanesulfonic acid copolymer, hydroxy acrylate Examples thereof include synthetic polymers such as ethyl / acryloyldimethyltaurine salt copolymer and sodium acrylate / acryloyldimethyltaurine salt copolymer, and inorganic polymers such as bentonite and laponite. A thickener may be mix | blended independently and may be mix | blended combining multiple types.

  The content of the thickener in the hair dye composition is preferably 0.1 to 10.0% by mass, more preferably 0.5 to 8.0% by mass. When the content of the thickener is 0.1% by mass or more, the above-described effects are easily obtained. On the other hand, if it exceeds 10.0% by mass, the hair feel may be heavy.

Examples of the oil component include fats and oils, waxes, higher alcohols, higher fatty acids, esters, silicones, hydrocarbons and the like.
Oils include olive oil, rosehip oil, camellia oil, shea fat, macadamia nut oil, almond oil, tea seed oil, sasanqua oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, beef fat, cocoa butter, corn oil , Peanut oil, rapeseed oil, rice bran oil, rice germ oil, wheat germ oil, pearl barley oil, grape seed oil, avocado oil, carrot oil, macadamia nut oil, castor oil, linseed oil, palm oil, mink oil, egg yolk oil, etc. Is mentioned. Examples of waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, and lanolin.

  Higher alcohols include lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, cetostearyl alcohol, aralkyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl Alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, etc. are mentioned. Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid. It is done.

  Esters include diisopropyl adipate, diisobutyl adipate, dioctyl adipate, 2-hexyldecyl adipate, diisostearyl adipate, isopropyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, isodecyl isononanoate , Isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, stearyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethyloctanoate, triisodecyl myristate, myristic acid Isostearyl, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, fatty acid (C10-30) (choleste Lanylyl), lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid Examples thereof include esters, N-alkyl glycol monoisostearate, cetyl caprate, glyceryl tricaprylate, neopentyl glycol dicaprate, diisostearyl malate, and lanolin derivatives.

  Examples of silicones include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, fatty acid-modified polysiloxane, amino-modified silicone, alcohol-modified silicone, glycerin-modified silicone, aliphatic alcohol-modified polysiloxane, and epoxy-modified. Examples thereof include silicone, fluorine-modified silicone, cyclic silicone, alkyl-modified silicone, and polyether-modified silicone.

  Examples of the hydrocarbon include α-olefin oligomer, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, liquid paraffin, squalane, polybutene, paraffin, polyethylene powder, microcrystalline wax, petrolatum and the like.

Examples of the surfactant include nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants.
Specific examples of the nonionic surfactant include ether type nonionic surfactants and ester type nonionic surfactants. Specific examples of the ether type nonionic surfactant include polyoxyethylene (hereinafter referred to as POE) cetyl ether, POE stearyl ether, POE behenyl ether, POE oleyl ether, POE lauryl ether, POE octyldodecyl ether, POE hexyl. Examples include decyl ether, POE isostearyl ether, POE nonyl phenyl ether, POE octyl phenyl ether, and the like.

  Specific examples of the ester type nonionic surfactant include POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, POE sorbitan trioleate, POE glycerin monostearate, monoester Myristic acid POE glycerin, tetraoleic acid POE sorbitol, hexastearic acid POE sorbit, monolauric acid POE sorbit, POE sorbit beeswax, monooleic acid polyethylene glycol, monostearic acid polyethylene glycol, monolauric acid polyethylene glycol, lipophilic monooleic acid glycerin , Lipophilic glyceryl monostearate, self-emulsifying glyceryl monostearate, sorbitan monooleate, sesquiolei Sorbitan acid, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid ester, decaglyceryl monolaurate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monomyristate, etc. Is mentioned.

  Cationic surfactants include lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, alkyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide, ethyl lanolin sulfate fatty acid Examples thereof include aminopropylethyldimethylammonium, stearyltrimethylammonium saccharin, cetyltrimethylammonium saccharin, and methyl behenyltrimethylammonium sulfate.

  Examples of anionic surfactants include alkyl sulfate salts such as sodium lauryl sulfate and triethanolamine lauryl sulfate, alkyl ether sulfate salts such as sodium POE lauryl ether sulfate, sodium stearoylmethyl taurate, triethanolamine dodecylbenzenesulfonate, Examples include sodium tetradecene sulfonate, POE lauryl ether phosphate and salts thereof, N-lauroyl glutamates, and N-lauroylmethyl-β-alanine salts.

  Examples of amphoteric surfactants include 2-undecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine sodium, cocoamidopropyl betaine, lauryldimethylaminoacetic acid betaine.

  Furthermore, as other components, preservatives such as parabens, chelating agents such as EDTA-2Na, stabilizers such as phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid and tannic acid, protein hydrolysates , Plant extracts, herbal extracts, vitamins, fragrances, UV absorbers and the like. Moreover, you may mix | blend at least 1 type chosen from what is listed in "quasi-drug material standard" (June 1991 issue, Yakuji Nippo).

  The hair dye composition of this embodiment is prepared as an emulsion, a solution, a dispersion, or the like. The dosage form of the hair dye composition is not particularly limited as long as it has a fluidity, and examples thereof include liquid, mist, foam, cream, and gel. The application method to hair is not specifically limited, The application method using a comb or a brush, the application method by a hand comb, the application method by spraying (spraying), etc. can be used. Such a hair dye composition is applied to the hair and then allowed to stand for a predetermined time, whereby the hair is directly dyed with the dye. Here, in the part covered with the cuticle in the hair, the hydrophobicity is high, while in the part where the cuticle is lost, the hydrophilicity is high. Since the direct dye is hydrophilic, the cuticle is easy to penetrate into the hydrophilic part where the cuticle is lost, and it is difficult to penetrate into the hydrophobic part covered with the cuticle. Since the water / octanol partition coefficient of the organic solvent contained in the hair dye composition of the present embodiment is in the range of 0.3 to 3.0, the penetration of the direct dye in the hydrophobic part is promoted. Furthermore, the hair dye composition of the present embodiment contains a glycol ether represented by the general formula (1). Such a glycol ether suppresses direct dye penetration at a hydrophilic site, but hardly inhibits the above-described organic solvent penetration at a hydrophobic site. For this reason, the dye directly penetrates with good balance into the hydrophilic part and the hydrophobic part on the surface of the hair.

According to the embodiment described in detail above, the following effects are exhibited.
(1) The hair dye composition of this embodiment contains a direct dye and an organic solvent, and the water / octanol partition coefficient of the organic solvent is in the range of 0.3 to 3.0. The penetration ability of the organic solvent promotes the penetration of the direct dye into the hydrophobic part of the hair. Furthermore, the hair dye composition contains a glycol ether represented by the general formula (1). For this reason, the dye directly penetrates with good balance into the hydrophilic part and the hydrophobic part on the surface of the hair. Therefore, it is easy to exhibit the hair dyeing power and improve the uniformity of the color tone after dyeing.

  (2) The organic solvent and the glycol ether are preferably contained in a mass ratio of 100: 1 to 1: 1. In this case, the effect of suppressing hair dyeing power and fading after hair dyeing can be easily obtained. Further, since excellent penetrating power is easily exerted even in a site with little damage, that is, a hydrophobic site, such a site is more easily dyed.

  (3) The organic solvent is preferably at least one selected from benzyl alcohol, benzyloxyethanol, phenoxyisopropanol, diethylene glycol monophenyl ether, and phenethyl alcohol. In this case, it becomes easy to remarkably exhibit the hair dyeing power.

In addition, the said embodiment can also be changed and comprised as follows.
A plurality of agents may be constituted by dividing each component blended in the hair dye composition without mixing, and the plurality of agents may be mixed immediately before use.

  The product form of the hair dye composition may be, for example, a color treatment in addition to the hair manicure. Hair nail polish is a hair dye that is dyed to a desired color tone by a single hair dyeing operation, whereas color treatment is applied to the hair by daily hair care or the like, so that the hair dyeing process is repeated. As a result, the hair dye is gradually dyed to a desired color tone. Even when the hair dye composition of the present embodiment is applied to color treatment, the effects described in the above section (1) can be exhibited each time the hair dye composition is used.

Next, the technical idea that can be grasped from the above embodiment will be described below.
The hair dye composition wherein the (C) glycol ether is at least one selected from lauryl glycol hydroxypropyl ether and (lauryl / myristyl) glycol hydroxypropyl ether.

  -(A) The hair dye composition whose direct dye is an acidic dye.

Next, the embodiment will be described more specifically with reference to examples and comparative examples.
(Examples 1-15, Comparative Examples 1-10)
An acidic hair dye composition was prepared by mixing the components shown in Tables 1 to 3. The obtained acidic hair dye composition was applied to the hair bundle using a brush, allowed to stand at 45 ° C. for 10 minutes, and further allowed to stand at room temperature of 25 ° C. for 10 minutes. In addition, the hair bundle to be used partially loses the cuticle by repeating a decoloring process by a conventional method using a decoloring agent (manufactured by Hoyu Co., Ltd., trade name: Viewteen Bleach Platinum Blonde) three times. Such cuticle loss occurs more in the hair tip portion than in the root portion. Thereafter, the hair bundle was subjected to plain rinsing (rinsing of the hair with water, warm water, etc.), washing with a shampoo and the like in order, and then the hair bundle was dried to give a hair dyeing treatment. In addition, the unit of the numerical value which shows the compounding quantity in each table | surface is the mass%. Moreover, the acidic hair dye composition of each example is prescribed so that hair can be dyed with a dark brown color tone.

The hair bundle subjected to the hair dyeing was evaluated for hair dyeing strength, dyeing fastness and level dyeing. Moreover, it evaluated about the ease of dyeing to a root using the acidic hair dye composition of each case. The criteria for each evaluation are shown below, and the results of each evaluation item are also shown in each table.
<Hair dyeing power>
For each of the hair bundles in each example, when the paneler visually observes the degree of color development, color development is excellent: ◎, color development is good: ◯, color development is slightly bad: △, and color development is bad: × evaluated.
<Uniformity>
For the hair bundle of each example, the panelist visually observes the uniformity of the color tone, whereby the leveling property is excellent: ◎, the leveling property is good: ◯, the leveling property is slightly bad: △, and leveling Poor nature: It evaluated in four steps of x.
<Dyeing fastness>
The hair bundle of each example left for one day after the hair dyeing treatment was immersed in a 1% sodium lauryl sulfate aqueous solution (500 ml) at 50 ° C. for 15 minutes, and then the hair bundle was sufficiently washed with water and air-dried. . As for fading of the hair bundle after the washing treatment, the panel has almost no fading and excellent dyeing fastness compared with the hair bundle before the washing treatment: ◎, less fading and good dyeing fastness: ○, The color fading was slightly noticeable and the dyeing fastness was somewhat poor: Δ, and the fading was noticeable and the dyeing fastness was poor: x.
<Ease of dyeing at the root>
A hair dye test using the acidic hair dye composition of each example was performed on the gray hair mixed model. In this hair dyeing test, the hair dyeing treatment of each example was performed in the same manner as the hair dyeing treatment described above except that the acidic hair dye composition of each example was applied to the base of the hair so as not to adhere to the scalp. did. The paneler visually observes the extent to which the hair root is dyed, whereby the dyeability is excellent: ◎, the dyeability is good: ◯, the dyeability is slightly bad: △, and the dyeability is bad: × The four grades were evaluated.

表１及び２に示すように、各実施例では、染毛力及び均染性について、優れる又は良好な結果が得られた。これに対して、表３に示される各比較例では、（Ｂ）有機溶剤及び（Ｃ）グリコールエーテルのいずれか一方が含有されていないため、均染性に劣る結果となった。各例の結果から、（Ｂ）有機溶剤及び（Ｃ）グリコールエーテルの配合は、染毛力を発揮させるとともに、染め上がりの色調の均一性を高めることが容易であることがわかる。

As shown in Tables 1 and 2, in each Example, excellent or good results were obtained with respect to hair dyeing power and leveling property. On the other hand, in each comparative example shown in Table 3, since either one of (B) organic solvent and (C) glycol ether was not contained, the result was inferior in leveling. From the results of each example, it can be seen that the blending of (B) the organic solvent and (C) glycol ether makes it easy to enhance the uniformity of the color tone after dyeing while exhibiting the hair dyeing power.

  Moreover, in each Example, the result which was excellent also about the item of dyeing fastness and the ease of dyeing to a root, or the favorable result was obtained. In addition, in Examples 1-6 and Examples 11-15, (B) organic solvent and (C) glycol ether are blended in a mass ratio of 100: 1 to 1: 1, so that the hair dyeing power and dyeing It is excellent in both items of fastness and ease of dyeing at the root. Thus, it can be seen that by containing (B) the organic solvent and (C) glycol ether in the above mass ratio, the effect of suppressing hair dyeing power and fading after hair dyeing can be easily obtained. Moreover, it turns out that the outstanding osmotic force becomes easy to be exhibited also in a site | part with few damages.

On the other hand, in Comparative Examples 1 to 4, (C) Ingredients that generally improve leveling or condition the hair without blending with glycol ether (in the “Formulation” column of Table 3, (* 1)) It is shown.) However, a result corresponding to each example is not obtained at least with respect to leveling. From the results of Comparative Examples 1 to 4, it is considered that the action and effect of (C) glycol ether are different.
(Examples 16 and 17, Comparative Examples 11-14)
A basic hair dye composition was prepared by mixing the components shown in Table 4. Using the obtained basic hair dye composition, hair was treated in the same manner as in Examples 1-15. Then, the hair bundle subjected to the hair dyeing was evaluated in the same manner as in Examples 1-15. In addition, the unit of the numerical value which shows the compounding quantity in Table 4 is the mass%. Moreover, the basic hair dye composition of each example is prescribed so that hair can be dyed with light brown color tone.

表４の結果から明らかなように、実施例１６及び１７の塩基性染毛料組成物においても、染毛力を発揮させるとともに、染め上がりの色調の均一性を高めることが容易であることがわかる。

As is apparent from the results in Table 4, it can be seen that the basic hair dye compositions of Examples 16 and 17 can easily exhibit the hair dyeing power and improve the uniformity of the color tone after dyeing.

Claims (3)

A hair dye composition comprising (A) a direct dye, (B) an organic solvent, and (C) a glycol ether,
The water / octanol partition coefficient of the (B) organic solvent is in the range of 0.3 to 3.0,
The said (C) glycol ether is shown by following General formula (1), The hair dye composition characterized by the above-mentioned.

In the general formula (1), R ¹ represents a hydrocarbon group having 10 to 22 carbon atoms, and the hydrocarbon group may have an unsaturated bond. R ² to R ⁵ is a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms, n is an integer of 0 to 3. The hair dye composition according to claim 1, comprising (B) the organic solvent and (C) the glycol ether in a mass ratio of 100: 1 to 1: 1. The hair dye composition according to claim 1 or 2, wherein the organic solvent (B) is at least one selected from benzyl alcohol, benzyloxyethanol, phenoxyisopropanol, diethylene glycol monophenyl ether, and phenethyl alcohol. object.