JP5142511B2 - Two-component hair bleaching and hair coloring - Google Patents

Description

The present invention relates to a two-component hair bleaching / dyeing agent, and more particularly, alleviates primary irritation to the skin caused by an alkaline agent and an oxidizing agent, and further mixes the first and second agents, and the hair. The present invention relates to a two-component hair decolorization / dyeing agent that can reduce irritating odors when applied to hair.

Conventionally, oxidative hair dyes, decolorants, and the like have been used for dyeing and decoloring hair. Such hair dyes and depigmenting agents are often of a two-component type. For example, a two-component hair dye contains an oxidation dye (such as paraphenylenediamine) and an alkali agent in the first agent. The second agent contains an oxidizing agent (hydrogen peroxide or the like) and is used by mixing the first agent and the second agent at the time of use. In addition, in the two-component decoloring agent, the first agent contains an alkali agent, the second agent contains an oxidizing agent (hydrogen peroxide, etc.), and the first agent and the second agent are mixed at the time of use. It is used.

By the way, for example, the conventional two-component hair dye has excellent characteristics such as little color fading due to shampoo and good sustainability, while an alkali agent is used as the first agent and an oxidizing agent is used as the second agent. Because of the use, there was a problem of primary irritation to the skin due to the alkaline agent and the oxidizing agent during hair dyeing.
In order to solve such a problem, it is a well-known fact that the primary stimulation by ammonia is mitigated by using a combination of ammonia and ammonium bicarbonate. However, in recent years, it has been desired to increase the lightness of hair and dye it brightly. However, in order to lighten the lightness of hair, the amount of alkaline agent in the two-component oxidative hair dye is reduced. There is a need to increase the amount, and there is a problem that the primary irritation to the skin by the alkaline agent is further increased. The problem of primary irritation to the skin with such alkaline and oxidizing agents is
The same applies to hair bleaching agents. In hair bleaching and hair coloring agents, it is an important issue to alleviate primary irritation to the skin caused by alkaline agents and oxidizing agents. In addition, in order to lighten the lightness of the hair, it is necessary to increase the amount of ammonia in the first agent, which causes a problem that the irritating odor due to ammonia becomes stronger and increases discomfort to consumers. . The problem of irritating odor caused by ammonia is the same for hair bleaching agents, and it is also important to reduce the irritating odor of ammonia that gives consumers discomfort in hair bleaching and hair coloring agents.

As means for solving the problems of the conventional example, Japanese Patent Application Laid-Open No. 2002-363048 (Patent Document 1) and Japanese Patent Application No. 2006-193647 (Patent Document 2) have been proposed.
That is, Patent Document 1 discloses a first agent for a two-component hair dye / bleaching agent composition comprising a first agent containing an alkaline agent and a second agent containing an oxidizing agent, which comprises ammonia water. And at least one alkaline agent selected from the group consisting of monoethanolamine, at least one water-soluble ammonium salt selected from the group consisting of ammonium carbonate and ammonium hydrogen carbonate, polyvalent carboxylic acid and salts thereof A first agent for a two-component hair dye / bleaching agent composition comprising at least one first agent pH adjuster selected from the group has been proposed.

In Patent Document 2, the first agent contains volatile alkali, polyoxyethylene alkyl ether, and higher alcohol, the second agent contains an oxidizing agent, polyoxyethylene alkyl ether, and In the two-component hair bleaching agent and the two-component hair dye containing a higher alcohol, the polyoxyethylene alkyl ether has an alkyl chain length of 16 or more carbon atoms, and the first agent and the second agent. The polyoxyethylene alkyl ether is 1
. The higher alcohol is contained in an amount of 0 to 6.0% by weight and has an alkyl chain length of 16 or more carbon atoms, and the higher alcohol is 2 in the mixed solution when the first agent and the second agent are mixed. .0 to 15.0
A two-component hair bleaching agent and a two-component hair dye characterized by being contained by weight% have been proposed.
JP 2002-363048 A Japanese Patent Application No. 2006-193647

However, only the pH adjuster of at least one first agent selected from the group consisting of ammonia water, monoethanolamine, ammonium carbonate, ammonium hydrogen carbonate, polyvalent carboxylic acid, and salts thereof of Patent Document 1 above is When the amount is large, it is estimated that it is difficult to obtain an effect sufficient to alleviate the primary irritation to the skin caused by the alkaline agent and the oxidizing agent. Further, Patent Document 2 is sufficient to alleviate the primary irritation to the skin caused by the alkaline agent and the oxidizing agent, even if the effect of reducing the irritating odor at the time of mixing and applying the first agent and the second agent is obtained. The effect cannot be expected.

As described above, the most commonly used two-component hair bleaching and hair coloring agents have been unpleasant to consumers due to primary irritation to the skin by alkaline and oxidizing agents. In order to solve this problem, various anti-inflammatory agents have been tried. However, an expected effect cannot be obtained and a product with less primary irritation to the skin is desired.
The present invention has been made paying attention to the problems existing in the prior art as described above.
It is an object of the present invention to provide a two-component hair bleaching / coloring agent with less primary irritation to the skin caused by an alkaline agent and an oxidizing agent when an alkaline agent is used as the agent and an oxidizing agent is used as the second agent.
Furthermore, the present invention provides a two-component hair bleaching / dyeing agent that can reduce the irritating odor caused by ammonia when mixing and applying the first agent and the second agent that are actually used and made uncomfortable.

In order to solve the above-mentioned problems, the present invention comprises a first agent containing ammonia and ammonium bicarbonate as an alkaline agent in a weight ratio of 1:10 to 10: 1 and a second agent containing an oxidizing agent. The alkali agent is contained in an amount of 0.05 to 5.0% by weight based on the total sum of the first agent and the second agent, and the oxidizing agent is 0.25 to the total sum of the first agent and the second agent. 2 parts by adding 5.0% by weight and adding 0.1 to 3.5% by weight of phytosterol to at least one of the first agent and the second agent with respect to the total mixture. The present invention has been found to alleviate the primary irritation to the skin caused by the alkaline agent and the oxidizing agent in the hair bleaching agent, and to reduce the irritating odor caused by ammonia when the first agent and the second agent are mixed or applied. It came to complete.

In the above-mentioned two-part hair bleaching agent, 1.0 to 6.0% by weight of polyoxyethylene alkyl ether, 2.0 to 15.5% based on the total sum of at least the first agent and the second agent. 0% by weight
Higher alcohol, 0.1-3.0 wt% cationic surfactant, 0.01-1.5 wt% anionic surfactant, 0.05-2.0 wt% phosphates Include. Also,
The polyoxyethylene alkyl ether, higher alcohol, cationic surfactant, and anionic surfactant each have a linear alkyl chain length of 16 or more carbon atoms.

Further, the present invention is that the ammonia and ammonium bicarbonate 1 as a dye and an alkali agent: 10 to 10: a first agent containing 1 weight ratio, be more a second agent containing an oxidizing agent, the dye The first agent contains 0.01 to 15% by weight, the alkali agent contains 0.05 to 5.0% by weight based on the total mixture of the first agent and the second agent, and the oxidizing agent contains the first agent. 0.25 to 5.0% by weight based on the total mixing of the second agent, and at least one of the first and second agents is 0.1 to 3.5% by weight based on the total mixing By containing the phytosterol, the primary irritation to the skin caused by the alkaline agent and the oxidizing agent in the two-part dyeing agent is alleviated, and at the time of mixing and applying the first agent and the second agent, Knowing that the irritating odor can be reduced, the present invention has been completed.

In the above-mentioned two-component hair dye, the amount of the first agent and the second agent is at least 1.
0 to 6.0% by weight of polyoxyethylene alkyl ether, 2.0 to 15.0% by weight of higher alcohol, 0.1 to 3.0% by weight of cationic surfactant, 0.01 to It contains 1.5% by weight of an anionic surfactant and 0.05 to 2.0% by weight of phosphates. The polyoxyethylene alkyl ether, higher alcohol, cationic surfactant, and anionic surfactant each have a linear alkyl chain length of 16 or more carbon atoms.

The present invention can alleviate primary irritation to the skin caused by an alkaline agent and an oxidizing agent that are actually used and made unpleasant to consumers in a two-component hair bleaching and hair coloring agent.
Furthermore, it reduces the irritating odor caused by ammonia during mixing and application of the first and second agents that are actually used and made uncomfortable by the consumer, and is a two-component hair decoloration with excellent decolorization and hair dyeing power. A hair dye can be provided.

Examples of the alkaline agent in the two-component hair bleaching / dyeing agent of the present invention include ammonia and ammonium bicarbonate. The content of the alkaline agent in the mixed solution at the time of mixing the first agent and the second agent is 0.05 to 5.0% by weight, and more preferably 0.5 to 4.0% by weight.
If the alkali content is less than 0.1% by weight, sufficient hair swelling, breaching power, and oxidative polymerization of the dye cannot be obtained. Only the primary irritation to the skin by the agent and the damage to the hair become stronger, and it hardly affects the decolorization and dyeing power. In particular, it is preferable to use ammonia, ammonium bicarbonate , and salts thereof in combination as alkali agents in terms of the effect of alleviating primary irritation to the skin and the effect of reducing irritating odors. When the weight ratio of ammonium bicarbonate to ammonia (ammonia weight / ammonium bicarbonate weight) is 1/10 or less, the stability of ammonium bicarbonate deteriorates, and when it is 10/1 or more, an alkali agent and an oxidizing agent. Has little effect on alleviating primary irritation to the skin. Monoethanolamine, aminomethylpropanol, taking into account hair damage as other alkaline agents
Monoisopropanolamine, sodium hydroxide, potassium hydroxide, ammonium chloride and the like may be used alone or in combination of two or more.

The main components of phytosterol contained in at least one of the first agent and the second agent include campesterol, stigmasterol, β-sitosterol, and brush castrol. Out. And this phytosterol is 0.1-3.5 weight% with respect to the mixing sum total of a 1st agent and a 2nd agent, and 0.5 to 2.5 weight% is especially more preferable. When the content of phytosterol is less than 0.1% by weight in the mixed solution when the first agent and the second agent are mixed, the effect of sufficiently reducing the irritation cannot be obtained, and the content is 3.5% by weight. Even if it contains more than%, no further effect is obtained and it is not economical.

Specific examples of effective polyoxyethylene alkyl ethers of the present invention include:
Examples thereof include polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene behenyl ether, and the like, and at least one kind or a combination of two or more kinds can be used. The content of the polyoxyethylene alkyl ether in the mixed solution at the time of mixing the first agent and the second agent is 1.0 to 6.0% by weight, particularly 2.0 to 4.0% by weight.
Is more preferable. If the content of the polyoxyethylene alkyl ether is less than 1.0% by weight, the irritating odor caused by ammonia cannot be sufficiently reduced, and if the content exceeds 6.0% by weight, the stimulation by ammonia is sufficiently achieved. The odor cannot be reduced. Polyoxyethylene oleyl ether having 16 or more carbon atoms and having an alkenyl chain is not suitable for reducing the irritating odor, and a straight chain is preferable to a side chain.

Specific examples of effective higher alcohols of the present invention include cetyl alcohol, cetostearyl alcohol, stearyl alcohol, behenyl alcohol, and the like, and at least one kind or a combination of two or more kinds is mentioned. Can be used. The content of the higher alcohol in the mixed solution at the time of mixing the first agent and the second agent is 2.0 to 15.0% by weight, and more preferably 4.0 to 10.0% by weight. If the content of the higher alcohol is less than 2.0% by weight, it is difficult to reduce the irritating odor caused by ammonia, and if it exceeds 15.0% by weight,
The effect of reducing the irritating odor due to more ammonia is not obtained, the viscosity becomes hard and the first agent,
Handling is difficult when the second agent is mixed, and the elongation at the time of application is poor, resulting in inconvenience in use.
Among higher alcohols having 16 or more carbon atoms, there are cetyl alcohol, stearyl alcohol, behenyl alcohol, etc. having straight chain rather than oleyl alcohol having alkenyl group and isostearyl alcohol having side chain. preferable.

Specific examples of effective oxidative dyes of the present invention include 5-aminoorthocresol, 1-amino-4-methylaminoanthraquinone, 3,3-iminodiphenol, 2,
4-diaminophenoxyethanol, 2,4-diaminophenol, toluene-2,5-
Diamine, toluene-3,4-diamine, nitroparaphenylenediamine, paraphenylenediamine, N-phenylparaphenylenediamine, metaphenylenediamine, orthoaminophenol, 1,4 diaminoanthraquinone, 2,6-diaminopyridine, 1 , 5-
Hydroxynaphthalene, paraaminophenol, paranitroorthophenylenediamine,
Paramethylaminophenol, picramic acid, sodium picramate, N, N-bis (4-aminophenyl) -2,5-diamino-1,4-quinonediimine, 5- (2-hydroxyethylamino) -2- Methylphenol, metaaminophenol, metaphenylenediamine, orthochloroparaphenylenediamine, 4, -4-diaminodiphenylamine, catechol, diphenylamine, α-naphthol, hydroquinone, pyrogallol, phloroglucin, gallic acid Resorcins and their salts include hydrochlorides, sulfates, acetates and the like, direct dyes, and the like, which can be used alone or in combination of two or more. The content of the dye in the first agent of the hair dye is preferably 0.01 to 15.0% by weight, and more preferably 0.1 to 10.0% by weight. If the content of the oxidative dye is less than 0.01% by weight, it is difficult to obtain a sufficient hair coloring power, and even if it exceeds 15.0% by weight, it is difficult to obtain a further hair coloring power.

Specific examples of effective cationic surfactants according to the present invention include cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, cetyltrimethylammonium bromide, stearyltrimethylammonium bromide, behenyl bromide. Trimethylammonium etc. are mentioned, It can use 1 type or in combination of 2 or more types. The content of the cationic surfactant in the mixed solution at the time of mixing the first agent and the second agent is 0.1 to 3.0% by weight, and more preferably 0.2 to 2.0% by weight. . If the content of the cationic surfactant is less than 0.1% by weight, no further effect can be obtained, and if it exceeds 3.0% by weight, it is difficult to reduce the irritating odor caused by ammonia.

Specific examples of effective anionic surfactants of the present invention include sodium N-stearoylmethyl taurate, sodium cetyl sulfate, sodium stearyl sulfate, polyoxyethylene cetyl ether sodium sulfate, polyoxyethylene stearyl ether. Examples thereof include sodium sulfate and other salts, and one kind or a combination of two or more kinds can be used. The content of the anionic surfactant in the mixed solution at the time of mixing the first agent and the second agent is 0.01 to 1.5% by weight, and more preferably 0.03 to 0.75% by weight. . If the content of the anionic surfactant is less than 0.01% by weight, no further effect can be obtained, and if it exceeds 1.5% by weight, it is difficult to reduce the irritating odor caused by ammonia.

As a method of reducing the irritating odor caused by ammonia, when many surfactants such as higher alcohols having a linear alkyl chain length of 16 or more carbon atoms and polyoxyethylene alkyl ether are used, The penetrability is extremely lowered, and the decolorizing power and hair coloring power are inferior. In this invention, phosphates are contained as a method of improving decoloring power and hair dyeing power, without preventing the reduction of the irritating odor by ammonia. Specific examples of the effective phosphates of the present invention include ammonium phosphate, ammonium hydrogen phosphate, sodium phosphate, sodium hydrogen phosphate, and the like, which may be used alone or in combination of two or more. it can. The content of phosphates in the mixed solution at the time of mixing the first agent and the second agent is 0.05% to 2.0% by weight, and more preferably 0.2 to 1.0% by weight. . If the phosphate is less than 0.05% by weight, sufficient decoloring power and hair dyeing power cannot be obtained, and if it exceeds 2.0% by weight, no further effect can be obtained.

Specific examples of effective oxidizing agents of the present invention include hydrogen peroxide. The content of the oxidizing agent in the mixed solution at the time of mixing the first agent and the second agent is 0.25 wt% to 5.0 wt%, and more preferably 1.5 to 4.0 wt%. If the oxidizing agent is less than 0.25% by weight, sufficient breaching force and dyeing effect cannot be obtained, and if it exceeds 5.0% by weight, the hair damage is undesirably increased.

In the hair bleaching / dyeing agent of the present invention, the first agent and the second agent can be mixed in any ratio, and the mixing ratio is more preferably 1st agent: 2nd agent = 2: 1 to 1: 3.

As other additives, surfactants, chelating agents, and the like as long as the effects of the present invention are not impaired.
Antioxidants, oils, amino acids, polypeptides, proteins, humectants, organic solvents, polymer compounds, silicones and silicone derivatives, pH adjusters, plant extracts, UV absorbers, HC dyes Basic dyes, tar pigments, fragrances, and the like that are generally used in hair colors may be appropriately blended.

Examples of the present invention will be shown below, but the present invention is not limited to such examples.

Examples 1-8, Comparative Examples 1-8
Blended based on the blending ratio (% by weight) shown in Table 1 and Table 3, blended with the first and second agents of the two-part hair bleach, based on Tables 2 and 4, and blended with two parts Each of the first agent and the second agent of hair was prepared. And the evaluation test of the irritation | stimulation to a scalp was done about Examples 1-6 and Comparative Examples 1-6, and the result is shown in Table 5. In addition, for Examples 7 and 8 and Comparative Examples 7 and 8, the scalp irritation evaluation test, the effect of reducing the irritating odor of ammonia when mixing the first agent and the second agent, and the application, decolorizing power, dyeing An evaluation test was conducted on the bristle strength, and the results are shown in Tables 6 and 7.
In addition, the said evaluation test method and evaluation criteria are as follows.

Stimulation to the scalp The first agent 5 g and the second agent 5 g shown in each example were uniformly mixed for 20 panelists, and applied to the scalp as uniformly as possible about 3 cm in length and about 3 cm in width. 1, 5, 10, 1 after application
Stimulation after 5 minutes was evaluated.
Evaluation of scalp irritation
5 points: No irritation was felt.
4 points: I hardly felt any irritation.
3 points: I felt mild irritation.
2 points: I felt moderate stimulation.
1 point: I felt a strong stimulus.
The score that felt the most stimulation of all evaluations was taken as that point, and the average was taken as the evaluation score.

Ammonia odor during mixing 20 g (1: 1) of each of the first and second agents shown in Examples 7 and 8 and Comparative Examples 7 and 8 in a cup
The stimulating odor of ammonia at the time of mixing was evaluated by 10 panelists.
Evaluation of ammonia odor during mixing A: No ammonia odor. .
○: Little ammonia odor.
Δ: A little ammonia smell.
X: Ammonia smell remarkably.

Ammonia odor at the time of application 20 g (1: 1) of each of the first agent and the second agent shown in Examples 7 and 8 and Comparative Examples 7 and 8 in a cup
After weighed and mixed, 10 panelists were given the pungent odor of ammonia when applied to the hair bundle.
It was evaluated with.
Evaluation of ammonia odor during application A: No ammonia odor.
○: Little ammonia odor.
Δ: A little ammonia smell.
X: Ammonia smell remarkably.

Decolorizing power After weighing and mixing 20 g (1: 1) of each of the first agent and the second agent shown in Example 7 and Comparative Example 7 into a cup, the mixture was applied to an untreated black hair bundle at 30 ° C. Then, after leaving for 30 minutes, it was washed with water, shampooed and treated, and the decoloring process was completed. The lightness of the hair bundle was visually evaluated by 10 panelists.
Evaluation of decoloring power A: Very good decolorization.
○: Decolorization is good.
Δ: Slightly bad color removal
×: Decolorization is bad

Hair dyeing power 20 g (1: 1) each of the first agent and the second agent shown in Example 8 and Comparative Example 8 were weighed and mixed, and then applied to a gray hair bundle at 30 ° C., After leaving it for 30 minutes, it was washed with water and shampooed and treated to complete the hair dyeing treatment. The degree of dyeing of the hair bundle by 10 panelists was evaluated visually.
Evaluation of hair coloring power A: Very good dyeing.
○: Dyeing is good.
Δ: Slightly poor dyeing
×: Dyeing is bad

As is apparent from the test results of Examples 1 to 6 shown in Table 5, the combination of ammonia and ammonium bicarbonate with phytosterol has the effect of alleviating the primary irritation to the scalp by the alkaline agent and oxidizing agent. It can be seen that this result is effective even when contained in the first agent or in the second agent.
In contrast, Comparative Examples 1 to 6 show that the combination of ammonia and ammonium bicarbonate has a slight effect of alleviating the primary stimulation to the scalp by the alkaline agent and the oxidizing agent, but it is not sufficient.

Further, as apparent from the test results of Examples 7 and 8 shown in Tables 6 and 7, the carbon number is 16
A polyoxyethylene alkyl ether having a linear alkyl chain as described above, a higher alcohol,
When a cationic surfactant, an anionic surfactant and a phosphate are included, the primary irritation to the scalp by an alkaline agent and an oxidizing agent is alleviated, and ammonia during mixing and application of the first and second agents It can be seen that the irritating odor caused by the color is reduced and the decolorization and hair coloring power are improved.
On the other hand, Comparative Examples 7 and 8 do not contain phytosterol, so that the primary irritation to the scalp by the alkaline agent and the oxidizing agent is not alleviated sufficiently, and the first agent and the second agent are mixed. When polyoxyethylene alkyl ether having a chain length of less than 16 carbon atoms, higher alcohol, cationic surfactant and anionic surfactant are contained in the liquid, mixing of the first agent and the second agent It can be seen that the irritating odor due to ammonia at the time of application and application is not sufficiently reduced.

Claims (6)

The alkaline agent comprises a first agent containing ammonia and ammonium bicarbonate in a weight ratio of 1:10 to 10: 1 and a second agent containing an oxidizing agent. The alkaline agent is a first agent and a second agent.
0.05 to 5.0% by weight based on the total mixing amount of the agent, and the oxidizing agent is the total mixture of the first agent and the second agent
0.25 to 5.0% by weight with respect to the sum, and at least one of the first agent and the second agent contains 0.1 to 3.5% by weight of phytosterol with respect to the total mixture. A two-component hair bleaching agent characterized by containing. At least one of the first agent and the second agent is 1.0 to 6.0% by weight of polyoxyethylene alkyl ether and 2.0 to 15.0% by weight of higher alcohol based on the total mixture. -Le, 0.
1 to 3.0% by weight of cationic surfactant, 0.01 to 1.5% by weight of anionic surfactant, 0.05 to 2.0% by weight of phosphates, The two-component hair bleaching agent according to claim 1. The polyoxyethylene alkyl ether, the higher alcohol, the cationic surfactant, and the anionic surfactant each have a linear alkyl chain length of 16 or more carbon atoms. The two-component hair bleaching agent described. It comprises a first agent containing ammonia and ammonium bicarbonate in a weight ratio of 1:10 to 10: 1 as a dye and an alkali agent, and a second agent containing an oxidizing agent, and the dye is 0 in the first agent.
. 01 to 15% by weight, the alkali agent is 0.05 to the total mixing of the first agent and the second agent
Contains 5.0% by weight, and the oxidizing agent is 0.25 to 5.0% with respect to the total mixture of the first agent and the second agent
% , And at least one of the first agent and the second agent is 0.1 to 3 with respect to the total amount of the mixture.
. A two-component hair dye comprising 5% by weight of phytosterol. At least one of the first agent and the second agent is 1.0 to 6.0% by weight of polyoxyethylene alkyl ether and 2.0 to 15.0% by weight of higher alcohol based on the total mixture. -Le, 0.
1 to 3.0% by weight of cationic surfactant, 0.01 to 1.5% by weight of anionic surfactant, 0.05 to 2.0% by weight of phosphates, The two-component hair dye according to claim 4. 6. The polyoxyethylene alkyl ether, higher alcohol, cationic surfactant, and anionic surfactant each have a linear alkyl chain length of 16 or more carbon atoms. The two-component hair dye described.