JP2003095900A - Hairdye composition and material for dyeing hair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hairdye composition having a low sensitizing potential, excellent hair-dyeing power, and reduced staining of the bare skin, and further to provide a material for dyeing the hair. SOLUTION: The first agent (the hairdye composition) for dyeing the hair contains 1 pt.wt. p-phenylenediamine (an oxidation dye), 5 pts.wt. α-olefin oligomer, 10 pts.wt. polyethylene glycol 400 (a polyhydric alcohol) and 3 pts.wt. POE (30)cetyl ether (a surfactant). The second agent for dyeing the hair contains 17 pts.wt. hydrogen peroxide (an oxidant). The material for dyeing the hair comprises the first agent and the second agent.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a hair dye composition and a hair dyeing product having low sensitization.

[0002]

2. Description of the Related Art Conventionally, a hair dye first agent (hair dye composition) containing an oxidizing dye such as paraphenylenediamine or paratoluylenediamine as a main component and an oxidizing agent such as hydrogen peroxide as a main component. A hair dyeing article comprising a second hair dyeing agent has been used.

When this hair dyeing article is used, the hair dye first agent and the hair dye second agent are mixed and applied to the hair. Then, the oxidative dye contained in the first part of the hair dye penetrates into the hair and is polymerized by the action of the oxidant contained in the second part of the hair dye to produce a pigment, which is fixed on the hair. To do.

In other words, this hair dyeing article can be dyed by fixing the pigment produced by polymerization of the oxidative dye on the hair.

[0005]

However, some of the oxidation dyes, paraphenylenediamine and paratoluylenediamine, have a sensitizing property that is rare in some people, and care must be taken during hair dyeing. was there.

In order to reduce the sensitizing property, a method in which paraphenylenediamine and a coupler are mixed in a ratio of 1: 1 (Japanese Patent Laid-Open No. 55-115814) and monosaccharides and disaccharides are selected. How to mix things
No. 454489) has been devised, but the effect was not sufficient.

Further, the conventional hair dyeing products have a problem that the hair dyeing power is not sufficient and the background stain is severe. The present invention has been made in view of the above points, and a hair dye composition and a hair dyeing product which have low sensitization properties and are excellent in hair dyeing power and background stain despite being mixed with an oxidation dye. The purpose is to provide.

[0008]

Means for Solving the Problems and Effects of the Invention (1) The invention of claim 1 is a gist of a hair dye composition containing an oxidative dye and an α-olefin oligomer. .

Since the hair dye composition of the present invention contains the α-olefin oligomer, it has a characteristic that it has a low sensitizing property even though it contains an oxidative dye. This sensitization refers to an allergic reaction caused by repeated contact with a living body.

Further, the hair dye composition of the present invention has the features that the hair dyeing power is high and the background stain is unlikely to occur. still,
The hair dye composition of the present invention can be used as a mixture with an oxidizing agent, and can be used, for example, as the first hair dye agent in a two-component hair dyeing product.

That is, when the hair dye composition of the present invention containing an oxidative dye and the hair dye second agent containing an oxidant are mixed and applied to the hair, the oxidative dye penetrates into the hair and is oxidized. By the action of the agent, it polymerizes to produce a pigment, which is dyed to the hair. -Examples of the oxidative dyes include major intermediates and couplers.

Specific examples of the main intermediates include phenylenediamines, aminophenols, toluylenediamines, aminonitrophenols, diphenylamines,
At least one selected from diaminophenylamines, N-phenylphenylenediamines, diaminopyridines, and salts thereof is used. Examples of the salts include hydrochloride, sulfate, acetate and the like.

Among these, paraphenylenediamine,
Paratoluylenediamine, N, N-bis (2-hydroxyethyl) -paraphenylenediamine, N-phenyl-
Paraphenylenediamine, 4,4'-diaminodiphenylamine, 2-chloroparaphenylenediamine, N, N
-Dimethylparaphenylenediamine, paraaminophenol, 2,6-dichloroparaphenylenediamine, paraaminophenylsulfamic acid and salts thereof are preferred from the viewpoint of hair dyeing power.

The amount of the main intermediate compounded is preferably 0.01 to 15% by weight, more preferably 0.01% by weight, based on the hair dye composition.
If the amount is less than 15% by weight, a sufficient hair dyeing effect cannot be obtained, and 15% by weight
Even if it exceeds, the effect is not changed and it is not economical. Furthermore, 0.1 to 10% by weight is particularly preferable, 0.1% by weight
By blending the above components, a superior hair dyeing effect can be obtained. On the other hand, when it exceeds 10% by weight, the increase in the hair dyeing effect is small.

Specific examples of the coupler include resorcin,
Pyrogallol, catechol, metaaminophenol, metaphenylenediamine, orthoaminophenol, 2,
4-diaminophenol, 1,2,4-benzenetriol, toluene-3,4-diamine, toluene-2,4
-Diamine, hydroquinone, α-naphthol, 2,6
-Diaminopyridine, 1,5-dihydroxynaphthalene, 5-aminoorthocresol, diphenylamine,
Paramethylaminophenol, phloroglucin, 2,4
-Diaminophenoxyethanol, gallic acid, tannic acid, ethyl gallate, methyl gallate, propyl gallate, quintet, 5- (2-hydroxyethylamino) -2
-At least one selected from methylphenol and the salts thereof is used. In addition, those listed in "Standards for Quasi-drug Raw Materials" (published in June 1991, Yakuji Nippo) may be appropriately blended.

The coupler content is 0.01 to 10% by weight.
If it is less than 0.01% by weight, sufficient dyeability cannot be obtained, and if it exceeds 10% by weight, the effect is not changed and it is not economical. Further, 0.1 to 5% by weight is particularly preferable, and by blending 0.1% by weight or more, more excellent dyeability can be obtained. On the other hand, when it exceeds 5% by weight, the increase in dyeability is small.

The hair dye composition of the present invention may further include, as additional components, a dye other than an oxidative dye, an alkali agent, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, behenyl alcohol and the like. Fats and oils such as alcohol, jojoba oil, glyceride of olive oil, beeswax,
Waxes such as lanolin, hydrocarbons such as liquid paraffin, solid paraffin, isoparaffin and squalane, esters such as isopropyl myristate and octyldodecyl myristate, dimethylpolysiloxane, methylphenylpolysiloxane, polyether modified silicone, high polymerization Silicones such as silicones and amino-modified silicones, fatty acids such as lauric acid, myristic acid and linolenic acid, sugars such as sorbitol and maltose, polyhydric alcohols, alkyl glyceryl ethers such as batyl alcohol and chimyl alcohol, gum arabic, sodium alginate , Xanthan gum, cellulose derivatives, natural or synthetic polymers such as crosslinked polyacrylic acid, preservatives such as parabens, chelating agents such as EDTA-Na, phenacetin, 8
-Hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, stabilizers such as tannic acid, phosphoric acid, citric acid, sulfuric acid, acetic acid, lactic acid, tartaric acid and the like pH adjusting agents, plant extracts, herbal medicine extracts, Vitamins, fragrances, UV absorbers, etc.
You may mix | blend at least 1 sort (s) chosen from what is published by the Pharmaceutical Affairs Daily, published in June, 991. The amount of the other additive components to be added is determined according to a conventional method for hair dye compositions.

Specific examples of dyes other than the oxidation dyes include direct dyes and basic dyes. Direct dyes include 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, piclamic acid, 1-amino-4-methylanthraquinone, 1,4-diaminoanthraquinone, 2-amino-4-nitrophenol. , 2-amino-5-nitrophenol, picric acid and their salts, and acid dyes stipulated by the "Ministerial Ordinance for Defining Tar Dyes that can be Used for Pharmaceuticals" (Notification in 1966, Ministry of Health and Welfare). , 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 230 (1), Red 230 (2), Red 2
No. 31, Red No. 232, Red No. 401, Red No. 502,
Red 503, Red 504, Red 506, Yellow 4
No., Yellow No. 5, Yellow No. 202 (1), Yellow No. 202 (2), Yellow No. 203, Yellow No. 402, Yellow No. 403 (1), Yellow No. 406, Yellow No. 407, Daidai No. 20
No. 5, Daidai No. 207, Daidai No. 402, 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 201
No. 1, black No. 401, etc. are used. And by blending this direct dye,
A more excellent effect can be obtained in dyeing and dyeability.

The content of the direct dye is preferably 0.001 to 10% by weight, and if it is less than 0.001% by weight, sufficient dyeing and dyeability cannot be obtained. It is not economical as usual. Moreover,
0.01 to 5% by weight is particularly preferable, and by blending 0.01% by weight or more, more excellent dyeing finish and dyeability can be obtained. On the other hand, when it exceeds 5% by weight, the dyeing finish and the dyeability are less likely to increase.

The alkaline agent is added to swell the hair so that the dye and the oxidizing agent can easily penetrate into the hair. Specific examples of the alkaline agent include ammonia, alkanolamines (triethanolamine, diethanolamine, monoethanolamine, isopropanolamine,
Diisopropanolamine, 2-amino-2-methyl-
1-propanol, etc.), organic amines (2-amino-2)
-Methyl-1,3-propanediol, guanidine, etc.), inorganic alkalis (sodium hydroxide, potassium hydroxide, etc.), basic amino acids (arginine, lysine, etc.), and salts thereof. These alkaline agents may be added alone or in combination of two or more. In addition, the hair dye composition may have a buffering effect by appropriately combining two or more kinds of alkaline agents.

The blending amount of the alkaline agent is p of the hair dye composition.
The amount of H is preferably 8 to 12. If the pH of the hair dye composition is less than 8, the action of the oxidizing agent cannot be sufficiently promoted. On the other hand, when it exceeds 12, defects such as damage to the hair are likely to occur when the hair is dyed.

The dosage form of the hair dye composition of the present invention can be, for example, liquid, emulsion or cream. (2) In the invention of claim 2, the oxidation dye is phenylenediamines, aminophenols, toluylenediamines, aminonitrophenols, diphenylamines,
The hair dye composition according to claim 1, containing one or more selected from diaminophenylamines, N-phenylphenylenediamines, diaminopyridines, and salts thereof. And

The present invention exemplifies oxidative dyes. The hair dye composition of the present invention has an excellent hair dyeing power by containing the above-mentioned oxidation dye, and has a feature that the sensitizing property is low by containing the α-olefin oligomer. (3) The invention of claim 3 is characterized in that the blending amount of the α-olefin oligomer is in the range of 1 to 10% by weight based on the entire hair dye composition.
The gist is the hair dye composition described in 1.

Since the hair dye composition of the present invention contains the α-olefin oligomer in an amount of 1 to 10% by weight, the effect of reducing the sensitizing property is remarkable. The blending amount of the α-olefin oligomer in the hair dye composition may be, for example, 0.1 to 30% by weight, preferably 0.5 to 20% by weight. Within these ranges, claim 3
Although the effect is inferior to that of the invention, it has an effect of reducing the sensitizing property of the hair dye composition. (4) The invention according to claim 4 contains a polyhydric alcohol and / or a surfactant,
The gist is the hair dye composition described in any one of 1.

Since the hair dye composition of the present invention contains a polyhydric alcohol, a surfactant, or both of them, the effect of lowering the sensitizing property is more remarkable. In particular, when the hair dye composition of the present invention contains both a polyhydric alcohol and a surfactant, the effect of lowering the sensitizing property is more remarkable.

When the hair dye composition contains a polyhydric alcohol, it has an effect of moisturizing hair, and when it contains a surfactant, the surfactant is an emulsifier or an emulsifier. It acts as a solubilizer. -Examples of the polyhydric alcohol include ethylene glycol, diethylene glycol, polyethylene glycol, glycerin, diglycerin, polyglycerin, propylene glycol, dipropylene glycol, and 1,3-butylene glycol.

The polyhydric alcohol content is 0.1 to 30% by weight, preferably 0.5 to 25% by weight, and more preferably 1.0 to 20% by weight. Less than 0.1% by weight and 3
When it is blended in an amount of more than 0% by weight, the effect of reducing the sensitizing property of the hair dye composition becomes low. -As the surfactant,
Examples thereof include cationic surfactants, anionic surfactants, nonionic surfactants and amphoteric surfactants.

The cationic surfactant has the effect of improving the feel of hair in addition to the above-mentioned effects. Specific examples of the cationic surfactant, alkyl trimethyl ammonium chloride, lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, stearyl trimethyl ammonium bromide, lauryl trimethyl ammonium bromide,
Examples thereof include quaternary ammonium salts such as dialkyldimethylammonium chloride.

Specific examples of the anionic surfactant include:
Coconut oil fatty acid potassium, Coconut oil fatty acid sodium, Coconut oil fatty acid triethanolamine, Sodium laurate, Potassium myristate, Isopropanolamine myristate, Sodium palmitate, Sodium stearate, Triethanolamine stearate, Potassium oleate, Oleic acid Fatty acid salts such as sodium, magnesium stearate, calcium stearate, metal soaps such as magnesium myristate, coconut oil fatty acid acylglutamate potassium, coconut oil fatty acid acylglutamate triethanolamine, lauroylglutamate triethanolamine, myristoylglutamate potassium, stearoylglutamate sodium Such as N
-Acylglutamic acid and salts thereof, potassium lauroylmethyltaurine, sodium coconut oil fatty acid methyltaurine, sodium palmitoylmethyltaurine, sodium stearoylmethyltaurine, etc., N-acylmethyltaurine salts, alkyl lauryl sulfate, triethanolamine lauryl sulfate, etc. Sulfate ester salt, PO
E alkyl sodium sulfate ester salts such as sodium lauryl ether sulfate and POE lauryl ether sulfate triethanolamine, POE lauryl ether phosphate and its salts, monoalkyl phosphates such as lauryl phosphate, sodium lauryl phosphate, potassium cetyl phosphate and the like Examples thereof include salts, triethanolamine dodecylbenzene sulfonate, sodium tetradecene sulfonate, and sodium dioctyl sulfosuccinate.

Specific examples of the nonionic surfactant include:
Polyoxyethylene (hereinafter referred to as POE) cetyl ether, POE stearyl ether, POE behenyl ether, POE oleyl ether, POE lauryl ether, POE octyl dodecyl ether, POE hexyl decyl ether, POE isostearyl ether, PO
Ether nonionic surfactants such as E nonyl phenyl ether and POE octyl phenyl ether, POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, POE sorbitan trioleate, monostearin Acid POE glycerin, monomyristate POE glycerin, tetraoleic acid POE sorbit, hexastearic acid POE sorbit, monolauric acid POE sorbit, POE sorbit beeswax, monooleic acid polyethylene glycol, monostearic acid polyethylene glycol, monolauric acid polyethylene glycol, lipophilic oil Type glyceryl monooleate, lipophilic glyceryl monostearate, self-emulsifying glyceryl monostearate , Sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid ester, decaglyceryl monolaurate, decaglyceryl monostearate, monooleate Examples thereof include ester type nonionic surfactants such as decaglyceryl and decaglyceryl monomyristate.

Specific examples of the zwitterionic surfactant include:
2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, lauryl dimethylamino acetic acid betaine, undecyl carboxymethoxyethyl carboxymethyl imidazolinium betaine sodium, undecyl hydroxyethyl imidazolinium betaine sodium, undecyl-N -Hydroxyethyl-
N-carboxymethylimidazolinium betaine, alkyldiaminoethylglycine hydrochloride solution, stearyldihydroxyethylbetaine, stearyldimethylaminoacetic acid betaine, stearyldimethylbetaine sodium solution,
Bis (stearyl-N-hydroxyethyl imidazoline) chloroacetic acid complex, coconut oil alkyl-N-carboxyethyl-N-hydroxyethyl imidazolinium betaine sodium, coconut oil alkyl-N-carboxyethoxyethyl-N-carboxyethyl imidazolinium Disodium hydroxide, coconut oil alkyl-N-carboxymethoxyethyl-N-carboxyethyl imidazolinium disodium hydroxide, coconut oil alkyl-N-
Carboxymethoxyethyl-N-carboxyethyl imidazolinium disodium lauryl sulfate, coconut oil alkyl betaine, coconut oil fatty acid amidopropyl betaine, coconut oil fatty acid-N-carboxymethoxyethyl-N-carboxyethyl imidazolinium betaine sodium, lauryl amino Triethanolamine propionate, β-
Sodium lauryl aminopropionate, lauryl N-
Carboxymethoxyethyl-N-carboxymethylimidazolinium disodium dodecanoylsarcosine, sodium lauryldiaminoethylglycine, lauric acid amidopropyl betaine solution, lauryl sulfobetaine,
Lauryl hydroxy sulfobetaine etc. are mentioned.

The content of the surfactant is 0.01 to 30% by weight, preferably 0.05 to 20% by weight, more preferably 0.1 to 15% by weight. When the content is less than 0.01% by weight or more than 30% by weight, the effect of reducing the sensitizing property of the hair dye composition becomes low. (5) The invention of claim 5 provides the hair dye composition according to claim 4, characterized in that the polyhydric alcohol is polyethylene glycol.

When the hair dye composition of the present invention contains a polyhydric alcohol, since the polyhydric alcohol is polyethylene glycol, the effect of reducing sensitization is further enhanced. As the polyethylene glycol, those having an average molecular weight of 1,000 or less are preferable from the viewpoint of the effect of reducing sensitization property, and those having an average molecular weight of 500 or less are more preferable. (6) The invention of claim 6 is the hair dye composition according to claim 4, wherein the surfactant contains a nonionic surfactant and / or an anionic surfactant. And

When the hair dye composition of the present invention contains a surfactant, the hair dye composition contains a nonionic surfactant and / or an anionic surfactant as the surfactant, thereby sensitizing the hair. The effect of reducing is even higher. Examples of the surfactant in the present invention include nonionic surfactants (particularly nonionic surfactants having an HLB of 15 or more), fatty acid salts, N-acylglutamic acid and its salts, N-acylmethyltaurine salt, POE. Anionic surfactants such as alkyl ether phosphoric acid and its salts and monoalkyl phosphoric acid and its salts are preferred. (7) The invention of claim 7 is characterized in that the nonionic surfactant has an HLB of 15 or more.
The gist is the hair dye composition described in 1.

When the hair dye composition of the present invention contains a nonionic surfactant, since the HLB of the nonionic surfactant is 15 or more, the effect of reducing sensitization is further enhanced. . Specific examples of the nonionic surfactant having an HLB of 15 or more include POE (21) lauryl ether, POE (30) cetyl ether, POE (20) cetyl ether, POE (20) oleyl ether, PO.
E (20) behenyl ether and the like can be mentioned.

The HLB is a numerical value representing the ratio of hydrophilicity and lipophilicity of the surfactant. (8) In the invention of claim 8, the anionic surfactant is a fatty acid salt, N-acyl glutamic acid and a salt thereof, or N.
The hair dye composition according to claim 6, containing one or more selected from the group consisting of an acylmethyl taurine salt, a POE alkyl ether phosphoric acid and a salt thereof, a monoalkyl phosphoric acid and a salt thereof. Is the gist.

When the hair dye composition of the present invention contains a surfactant, the effect of reducing sensitization is further enhanced by including the above-mentioned anionic surfactant as the surfactant. . (9) The invention of claim 9 is a hair dye first agent comprising the hair dye composition of claims 1 to 8 and a hair dye second agent containing an oxidizing agent.
A hair dye article characterized by being composed of an agent.

Since the hair dyeing product of the present invention comprises the hair dye composition according to any one of claims 1 to 8 as the first hair dyeing agent, it has a low sensitizing property and a hair dyeing property. It has high strength and is resistant to soiling. When this hair dyeing product is used, the first dyeing agent and the second dyeing agent are mixed and applied to the hair. At this time, the oxidative dye contained in the first hair dye agent penetrates into the hair and the second hair dye agent
By the action of the oxidizing agent contained in the agent, the agent polymerizes to produce a pigment and dyes hair. Further, the melanin contained in the hair is decolorized by the oxidizing agent.

Examples of the oxidizing agent include hydrogen peroxide and the like. The mixing amount of the oxidizing agent is preferably such that the concentration of the oxidizing agent in the mixed liquid obtained by mixing the hair dye first agent and the hair dye second agent is 0.1 to 5% by weight, and 1 to 3 weight % Is more preferable. If it is less than 0.1% by weight, melanin tends to be insufficiently decolorized. On the other hand, if the amount is more than 5% by weight, defects such as damage to hair are likely to occur.

[0040]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, examples (embodiments) of embodiments of the hair dye composition and the hair dyeing product of the present invention will be described. (Examples 1 to 6) The components shown in Table 1 were mixed in respective corresponding ratios to prepare a hair dye first agent (hair dye composition).

[0041]

[Table 1]

A second hair dye was prepared by mixing the components shown in Table 2 in the corresponding proportions.

[0043]

[Table 2]

A combination of the first hair dye and the second hair dye was used as a hair dyeing product. (Examples 7 to 11) The components shown in Table 3 were mixed in corresponding ratios to prepare a hair dye first agent (hair dye composition).

A second hair dye was prepared in the same manner as in Example 1. And the first hair dye and the second hair dye
The combination with the agent was used as a hair dyeing product.

[0046]

[Table 3]

(Comparative Examples 1 to 3) The components shown in Table 4 were mixed in corresponding ratios to prepare a hair dye first agent (hair dye composition). Further, a second hair dye preparation was prepared in the same manner as in Example 1.

A combination of the first hair dye and the second hair dye was used as a hair dyeing product.

[0049]

[Table 4]

(Experimental Example 1) a) The following tests were carried out in order to evaluate the sensitizing properties of the hair dye compositions and hair dyeing products of Examples 1 to 11 and Comparative Examples 1 to 3. The first hair dye agent (hair dye composition) and the second hair dye agent were mixed at a weight ratio of 1: 1 to give a test substance.
A sensitization treatment was performed by applying to the alb / c mouse dorsal skin.

On day 7 after the above-mentioned sensitization treatment, a test substance prepared in the same manner as in the sensitization treatment was applied to the sensitized mouse auricle for induction treatment. Ear swelling due to a sensitization-evoked reaction was calculated by the following equation using the thickness X of the mouse auricle before the induction treatment and the thickness Y of the mouse auricle measured after the induction treatment, which were measured in advance. The degree was calculated.

Swelling degree of auricle = (Y−X) / X Hair swelling degree of each Example and Comparative Example was set to 100 (control) with the degree of ear swelling of mouse when the hair dyeing article of Comparative Example 1 was used as a test substance. The degree of ear swelling in mice when the article was used as a test substance was calculated, and the following 1 to 5 were calculated based on the degree of ear swelling.
The effect of reducing the sensitizing property was evaluated in 5 stages.

[0053] Less than 5:30 4:30 or more and less than 60 3: 60 or more and less than 90 2: 90 or more and less than 120 1: 120 or more b) The evaluation results are shown in Table 5.

[0054]

[Table 5]

As shown in Table 5, in the hair dyeing products of Examples 1 to 11, the degree of ear swelling was evaluated to be 5 to 3, and the effect of reducing the sensitizing property was good. In particular, the hair dyeing products of Examples 1, 5, and 6 have polyhydric alcohols in addition to the α-olefin oligomer, so that polyhydric alcohols are not blended in Example 7 The effect of reducing the sensitizing property was more excellent than that of the hair dyeing product.

Among them, the hair dye article of Example 1 contains 1,3-butylene glycol as the polyhydric alcohol because polyethylene glycol is blended as the polyhydric alcohol (within the scope of the invention of claim 5). The effect of reducing the sensitizing property was further excellent as compared with the hair dyeing products of Examples 5 and 6 in which glycerin was blended.

In the hair dyeing products of Examples 2 to 4 and Examples 8 to 11, polyethylene glycol was blended as the polyhydric alcohol, but the components other than the polyhydric alcohol (such as α-olefin oligomer and surface active agent) were used. The type and amount of the agent is different from the hair dyeing products of Example 1, Example 5, Example 6, and Example 7, so that there is a difference in sensitizing property.

The hair dye product of Example 1 contains a nonionic surfactant having an HLB of 15 or more as a surfactant (within the scope of the invention of claim 7). The effect of reducing the sensitizing property was better than that of Example 2 in which a nonionic surfactant having a ratio of less than 15 was blended.

The hair dyeing products of Examples 5 to 11 were blended with a nonionic surfactant having an HLB of 15 or more as a surfactant, but the components other than the surfactant (α-olefin oligomers and poly-olefins) were mixed. The type and amount of the (hydric alcohol) are different from those of the hair dyeing products of Example 1 and Example 2, so that there is a difference in sensitizing property.

Further, in the hair dyeing products of Examples 1, 9 and 10, the blending amount of the α-olefin oligomer is within the range of 1 to 10% by weight (within the scope of the invention of claim 3). Therefore, Example 8 in which the blending amount of the α-olefin oligomer is 0.5% by weight, and the blending amount is 1
The effect of reducing the sensitizing property was better than that of Example 11 which was 2% by weight.

In the hair dyeing products of Examples 2 to 7, the blending amount of the α-olefin oligomer is in the range of 1 to 10% by weight, but the components other than the α-olefin oligomer (polyhydric alcohol and surface active agent) are used. The type and amount of the agent is different from those of the hair dyeing products of Example 1 and Examples 8 to 11, and thus the sensitizing properties are different.

On the other hand, the hair dye products of Comparative Examples 1 to 3 are α-
This is an example which does not include an olefin oligomer and is outside the scope of the present invention, and the evaluation result of the sensitizing property was 2 or less in all cases. (Experimental Example 2) a) Examples 1 to 11 and Comparative Examples 1 to 1 are performed as follows.
The hair dye composition and hair dye of the hair dye composition and the hair dye article of 3 were evaluated.

Evaluation of Hair Dyeing Power i) An oxidative hair dyeing agent was prepared by mixing the first hair dyeing agent and the second hair dyeing agent in a weight ratio of 1: 1. ii) An oxidative hair dye was applied to the hair bundle, and hair was dyed according to a conventional method.

Iii) The hair bundle after dyeing was visually observed and the hair dyeing power was evaluated according to the following criteria. ⊚: Excellent hair dyeing power ○: Good hair dyeing power △: Slightly inferior hair dyeing power ×: Evaluation of background stain that is considerably inferior in hair dyeing power i) First and second hair dyeing agents Was mixed at a weight ratio of 1: 1 to prepare an oxidative hair dye.

Ii) Oxidative hair dye on the inside of the arm with a diameter of 1 cm
Was applied to a circular area of 10 minutes, left for 10 minutes, and then rinsed with warm water. Then, it was further rubbed with a finger for a minute using soap, and rinsed with warm water. iii) The degree of dyeing on the skin (background stain) was observed, and evaluated according to the following 5 grades from 1 to 5.

[0066] 5: No trace remains 4: Almost no trace remains 3: A slight brown mark remains 2: A little brown mark remains 1: A brown mark remains.

B) The results are shown in Table 5. As shown in Table 5,
In the hair dyeing products of Examples 1 to 11, the hair dyeing power was all ⊚ or ◯, and the background stains were all in the range of 3 to 5.

On the other hand, the hair dyeing powers of Comparative Example 1 and Comparative Example 2 were ◯, while the hair dyeing power of Comparative Example 3 was Δ. Further, the background stains of the hair dyeing products of Comparative Examples 1 to 3 were 2 or 3, respectively. It should be noted that the present invention is not limited to the above-described embodiment, and can be implemented in various forms without departing from the scope of the present invention.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masaaki Sakura             Aki Prefecture Aichi-gun Nagakute Town             Ground 12 Inside the Hoyu Research Institute (72) Inventor Tsuyoshi Nonogaki             Aki Prefecture Aichi-gun Nagakute Town             Ground 12 Inside the Hoyu Research Institute F-term (reference) 4C083 AB082 AB282 AB352 AB412                       AC011 AC012 AC022 AC072                       AC111 AC112 AC182 AC242                       AC402 AC521 AC532 AC551                       AC552 AC661 AC731 AC782                       AC791 AC851 AC891 AC901                       AD041 AD042 BB01 BB04                       BB05 CC36 EE10 EE26                 4H057 AA01 BA01 BA09 BA14 CA12                       CB08 CC02 DA01 DA21

Claims (9)

[Claims] 1. A hair dye composition comprising an oxidative dye and an α-olefin oligomer. 2. The oxidative dyes include phenylenediamines, aminophenols, toluylenediamines, aminonitrophenols, diphenylamines, diaminophenylamines, N-phenylphenylenediamines, diaminopyridines, and the like. The hair dye composition according to claim 1, which contains one or more kinds selected from salts. 3. The hair dye according to claim 1 or 2, wherein the blending amount of the α-olefin oligomer is in the range of 1 to 10% by weight based on the entire hair dye composition. Agent composition. 4. The hair dye composition according to claim 1, which contains a polyhydric alcohol and / or a surfactant. 5. The hair dye composition according to claim 4, wherein the polyhydric alcohol is polyethylene glycol. 6. The hair dye composition according to claim 4, wherein the surfactant contains a nonionic surfactant and / or an anionic surfactant. 7. The HLB of the nonionic surfactant is 1
It is 5 or more, The hair dye composition of the said Claim 6 characterized by the above-mentioned. 8. The anionic surfactant is selected from fatty acid salts, N-acyl glutamic acid and its salts, N-acyl methyl taurine salts, POE alkyl ether phosphoric acid and its salts, and monoalkyl phosphoric acid and its salts. The hair dye composition according to claim 6, wherein the hair dye composition contains one or more selected substances. 9. A hair dye, comprising a hair dye first agent comprising the hair dye composition according to any one of claims 1 to 8 and a hair dye second agent containing an oxidizing agent. Supplies.