JPH07116016B2 - Hair dye - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to a hair dye,
More specifically, the present invention relates to a hair dye using a silver complex salt and a dye intermediate.

[0002]

2. Description of the Related Art Conventionally, a hair dye is composed of a first agent containing an oxidizing dye intermediate and a second agent containing an oxidizing agent.
A dosage form of oxidative hair dye is widely used. The oxidative hair dye is one in which a colorless, low-molecular weight oxidative dye intermediate is permeated into the hair, and oxidative polymerization is carried out in the hair to generate a pigment, thereby dyeing the hair. These hair dyes are very convenient because they can dye hair in various color tones as desired and have excellent hair dyeing power.
In addition to the oxidative hair dye, a silver ethanolamine additive and a reducing agent are used as a hair dye having high safety and capable of dyeing hair in a short time, as shown in JP-A-48-18438. There was also a hair dye.

[0003]

However, in the conventional oxidative hair dye, the hair is apt to be damaged by the hair dyeing treatment. Therefore, there is a problem that the hair is not moisturized and the dyed color is unnatural, which gives a third person an uncomfortable feeling, and the combability is poor and the suppleness of the hair is lost. Further, there is a drawback that it requires a leaving time of 20 to 40 minutes after applying the hair dye solution, which restrains the subject for a long time. On the other hand, recently, an oxidative hair dye that can be dyed in a relatively short time of about 5 to 10 minutes has appeared. However, even with such a hair dye, if the appropriate leave time is not taken, for example, if the leave time is too long, it will be dyed too deeply, or conversely, if the leave time is too short, it will not dye There was a problem of poor sex. Further, the hair dyes of the types described in JP-A-48-18438 described above have problems such as poor hair dyeing power and fastness, and poor color tone.

The present invention solves the above problems, can dye hair in a short time, has excellent fastness and reproducibility of hair dyeing results, has a wide variety of color tones, and enables natural dyeing without damaging the hair. The present invention aims to provide a simple hair dye.

[0005]

SUMMARY OF THE INVENTION The hair dye of the present invention is characterized by comprising an agent A containing a diammine silver complex salt and / or an ethanolamine silver complex salt and an agent B containing a dye intermediate. .

The diammine silver complex salt used in the agent A of the present invention is represented by the following general formula and can be produced by dissolving a silver compound in an aqueous ammonia solution. [Ag (NH ₃ ) ₂ ] X (X is a monovalent anion) The ethanolamine silver complex salt used in the agent A of the present invention is represented by the following general formula, and the silver compound is dissolved in an ethanolamine aqueous solution. It can be produced by dissolving in. Monoethanolamine is particularly preferred as the ethanolamine. Diethanolamine and triethanolamine are slightly inferior in hair dyeing power.

[Ag (MEA) ₂ ] X (MEA is monoethanolamine, X is a monovalent anion) Further, as the silver compound, silver chloride, silver acetate, silver sulfate, silver nitrate, silver bromide, iodo Examples thereof include silver halide, silver fluoride, silver oxide, silver chlorate, silver citrate, silver iodate, silver lactate, and silver phosphate. Among these, silver chloride, silver sulfate, silver oxide and silver citrate are particularly preferable. preferable.

The diammine silver complex salt and / or the ethanolamine silver complex salt is preferably added in an amount of 0.01 to 10% by weight, more preferably 0.1% by weight, based on the amount of agent A.
It is 1 to 5% by weight. When the content of silver is less than 0.01% by weight, the hair dyeing power tends to decrease, and even if it is blended in an amount of more than 10% by weight, further hair dyeing effect cannot be expected. When the silver content is 0.1 to 5% by weight, more preferable hair dyeing power can be obtained. Moreover, when the pH of the agent A is adjusted to 8 to 12, the hair is swollen and the silver complex ion and the dye intermediate easily penetrate into the hair, which is preferable.

Examples of dye intermediates to be incorporated in the agent B of the present invention include phenylenediamines, aminophenols, toluylenediamines, diphenylamines, diaminophenols, N-phenylphenylenediamines and the like. 1 or 2 or more types selected from the salts of. Examples of the salts include hydrochloride, sulfate, acetate and the like. Among the above dye intermediates,
Particularly, the para component and the ortho component are preferable. For example, paraphenylenediamine, toluene-2,5-diamine, paraaminophenol, orthoaminophenol, 4,
4'-diaminodiphenylamine, 2,4-diaminophenol, 2,2 '-[(4-aminophenyl) imino] bisethanol, paraaminosulfamic acid, 2-
Chloro-paraphenylenediamine, N-phenyl-paraphenylenediamine, toluene-3,4-diamine and the like and salts thereof are preferable, and among them, paraphenylenediamine, toluene-2,5-diamine, paraaminophenol, orthoamino are particularly preferable. Phenol, 4,4'-
Diaminodiphenylamine, 2,4-diaminophenol, 2,2 '-[(4-aminophenyl) imino] bisethanol, paraaminosulfamic acid and salts thereof are preferred. The compounding amount of the dye intermediate is about 0.01 to 10% by weight based on the total weight of the agent B.

[0010] In addition, the following can be mentioned as a compound which can be blended with the agent A or the agent B. -Couplers: resorcin, pyrogallol, catechol, metaaminophenol, metaphenylenediamine, toluene-2,4-diamine, hydroquinone, α-naphthol and salts thereof. Other dyes: 2-nitroparaphenylenediamine, 4-nitroorthophenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, 2,6-diaminopyridine, 1,5- Dihydroxynaphthalene, 5-aminoorthocresol, picramic acid, picric acid, diphenylamine, gallic acid, paramethylaminophenol, 1,
2,4-benzenetriol, phloroglucin, 2,4
-Diaminophenoxyethanol, 5- (2-hydroxyethylamino) -2-methylphenol, 1-amino-4-methylaminoanthraquinone, 1,4-diaminoanthraquinone, etc. and salts thereof.・ Tar dye ...
Azo dyes, nitroso dyes, triphenylmethane dyes, xanthene dyes, quinoline dyes, anthraquinone dyes, indigo dyes, etc. are listed in the "Ministerial Ordinance for Defining Tar Dyes that can be Used for Pharmaceuticals" (Ministry of Health and Welfare, 1966). thing. By combining these, various color tones can be obtained.

Further, surfactants such as polyoxyethylene alkyl ether and polyoxyethylene alkylamine fatty acid amide, moisturizers such as glycerin and propylene glycol, oily components such as lanolin, squalane and liquid paraffin, sulfite and ascorbic acid. Stabilizers, thickeners such as carboxymethyl cellulose, higher alcohols,
A pH adjuster, a fragrance, and the like can be appropriately added as needed.

As the dosage form of the hair dye of the present invention, various forms such as liquid, cream, gel, paste, emulsion, aerosol and aerosol foam can be mentioned. In addition, the hair dyeing method using the hair dye of the present invention applies the agent A for 30 seconds to 1 second.
After left for 0 minutes, preferably 1 to 5 minutes, the agent B is continuously applied and left for 30 seconds to 10 minutes, preferably 1 to 5 minutes, whereby the hair can be dyed in a natural color tone. Also,
Although it is possible to dye hair by applying the agent A after applying the agent B, a color tone different from that when the agent A is applied first is obtained. The reason why the color tone obtained when the agent A is first applied is different from that obtained when the agent B is applied first is that the silver complex ion or the dye intermediate penetrates into the hair first.
It is considered that the ratio of the produced silver, the complex of the silver-dye intermediate and the production of the reaction product between the dyes is different.

The present invention is also useful for dyeing human hair, keratin fibers such as wool, natural fibers, synthetic fibers and animal hair and skin. The present invention provides a hair dye that can be dyed in a short time, has excellent fastness and reproducibility of hair dyeing results, has a wide variety of color tones, and can obtain natural dyeing without damaging the hair. The reason for this is considered to be as follows. That is, when the diammine silver complex ion and / or the ethanolamine silver complex ion of the agent A penetrates into the hair and the dye intermediate of the agent B reacts, the diammine silver complex ion and / or the ethanolamine silver complex ion is reduced. It is presumed that hair is dyed with silver, a complex of a silver-dye intermediate, a reaction product of dyes with each other, and the like. Because the reaction ends in a short time,
It is possible to dye hair in a short time. Further, since the reaction product is strongly bound to the keratin protein, it has excellent fastness to washing. Further, the reaction product is also excellent in light fastness. Furthermore, since the reaction is completed in a short time, there is no difference in the color depth and color tone depending on the length of the standing time, and the reproducibility of the hair dyeing result is excellent. Further, various color tones can be set by setting the type, combination and concentration of the silver complex ion and the dye intermediate. Further, unlike the conventional oxidative hair dye, since hydrogen peroxide as an oxidant is not used, the hair is hardly damaged, and a moist and natural dyeing can be obtained.

[0014]

Preferred embodiments of the present invention will be described below in order to further clarify the structure and operation of the present invention described above. <Example 1 and Comparative Example 1> Example 1 and Comparative Example 1 (normal oxidative hair dye) having the following compositions were prepared. Example 1 Agent A Silver chloride 1.5% by weight Ammonia 3.0% by weight 100% with purified water.

Agent B p-phenylenediamine 1.0 wt% propylene glycol 10.0 wt% EDTA-Na 0.3 wt% sodium sulfite 0.2 wt% Purified water to 100%. Comparative Example 1 First agent p-phenylenediamine 1.0% by weight propylene glycol 10.0% by weight EDTA-Na 0.3% by weight sodium sulfite 0.2% by weight Ammonia pH 10 Amount to be 100% with purified water .

Second agent Hydrogen peroxide 6.0% by weight Made to 100% with purified water. With respect to the above-mentioned Example 1 and Comparative Example 1, a comparative test was conducted on the reproducibility of the hair dyeing results, the washing fastness and the daylight fastness by the methods described below. (1) Comparative test of reproducibility of hair dyeing results The agent A of Example 1 is applied to the white coat of goats and left for 3 minutes, and then the agent B is applied and left for a certain period of time. Then shampoo, rinse and dry. Table 1 shows the hair dyeing results obtained by changing the standing time after applying the agent B. Further, the first agent and the second agent of Comparative Example 1 were mixed at a ratio of 1: 1 and similarly applied to a white goat bundle of goats and left for a certain period of time. Then shampoo, rinse and dry. Table 1 shows the hair dyeing results obtained by changing the standing time after application. However, in Table 1, the evaluation of the hair dyeing results was based on the following evaluation criteria.・ Evaluation criteria ○: Dyes blackish brown.

Δ: Slightly dyed. X: Almost not dyed. □: Too dark and deeply dyed. By this comparison test,
It can be seen that the hair dye of Example 1 completes the dyeing of the hair bundle in a short time (1 minute), and the reaction does not proceed even if left for a long time. On the other hand, the oxidative hair dye of Comparative Example 1 hardly dyes when it is shorter than the optimum leaving time (20 to 30 minutes),
On the contrary, when it is long, it can be seen that it is dyed too deeply. Therefore, according to the hair dye of this example, hair can be dyed in a shorter time than the conventional oxidative hair dye, and the length of the standing time hardly affects the hair dyeing result, and the reproducibility of the hair dyeing result is improved. Good.

[0018]

[Table 1]

(2) Washing fastness comparison test The same hair dyeing operation as in the comparison test of (1) was performed to prepare a hair bundle using Example 1 for a leaving time of 5 minutes. As a result, the hair was dyed in black-brown with excellent dyeing and good hair finish. Similarly, the same hair dyeing operation as in the comparative test (1) was performed to prepare a hair bundle using Comparative Example 1, which was left for 30 minutes. Both hair tresses were immersed in a 2% aqueous sodium lauryl sulfate solution at 50 ° C. for 15 minutes. This immersion treatment corresponds to 2-3 weeks when the hair is shampooed once a day.
Then, the following results were obtained when compared with the dyed hair not subjected to the treatment. -Hair bundle treated in Example 1 ... Almost no change. The hair bundle treated in Comparative Example 1 ... fading is observed. (3) Sunlight fastness comparison test The same hair dyeing operation as in the comparison test of (1) was performed to prepare a hair bundle using Example 1, which was left for 5 minutes. As a result, the hair was dyed in black-brown with excellent dyeing and good hair finish. Similarly, the same hair dyeing operation as in the comparative test (1) was performed to prepare a hair bundle using Comparative Example 1, which was left for 30 minutes. Place both hair strands by the window facing south and direct sunlight 2
Guess for a week. The following results were obtained when compared with dyed hair not subjected to the operation. -Hair bundle treated in Example 1 ... Almost no change. The hair bundle treated in Comparative Example 1 ... fading is observed.

As described above, according to the present embodiment, a hair bundle can be dyed in a dark brown color which is excellent in dyeing and finishes well, the reproducibility of hair dyeing results is good, and washing and sunlight are performed. It is also superior in fastness to conventional oxidative hair dyes. <Example 2> As Example 2, a gel hair dye having the composition shown below was prepared, and the agent A was applied to white hair for 3 minutes and then the agent B was applied and left for 3 minutes. Then, shampoo was used to wash the hair. As a result, as in Example 1, the dyeing was excellent and the hair was dyed in a solid black brown color with good finish of the hair.

Agent A Silver sulphate 3.0% by weight Monoethanolamine 5.0% by weight Amyl paradimethylaminobenzoate 0.5% by weight Cetanol 2.0% by weight Sodium lauryl sulphate 0.5% by weight Purified water 100% by weight %.

Agent B Toluene-2,5-diamine 1.0% by weight Metaaminophenol 0.1% by weight Resorcin 0.2% by weight Lauric acid diethanolamide 10.0% by weight Polyoxyethylene nonylphenyl ether 20.0% by weight % Oleic acid 5.0% by weight Polyethylene glycol 20.0% by weight Sodium sulfite 0.5% by weight Perfume Suitable amount Make up to 100% by weight with purified water. <Example 3> As Example 3, a creamy hair dye having the following composition was prepared, and the agent A was applied to white hair for 3 minutes and then the agent B was applied and left for 3 minutes. Then, shampoo was used to wash the hair. As a result, as in Example 1, the dyeing was excellent, and the hair was dyed in a solid black color with good finish of the hair.

Agent A Silver nitrate 2.0% by weight Ammonia 4.0% by weight Cetanol 5.0% by weight Sodium lauryl sulfate 0.5% by weight Purified water is 100% by weight.

Agent B 2,2 '-[(4-aminophenyl) imino] bisethanol sulfate 2.0% by weight Orthoaminophenol 0.5% by weight Resorcin 0.5% by weight Polyoxyethylene cetyl ether 3. 0% by weight cetostearyl alcohol 8.0% by weight liquid paraffin 2.0% by weight Fragrance suitable amount Purified water is 100% by weight. <Example 4> As Example 4, a liquid hair dye having the following composition was prepared, and the agent A was applied to white hair and left for 1 minute, and then the agent B was applied and left for 1 minute. Then, shampoo was used to wash the hair. As a result, as in Example 1, the dyeing was excellent and the hair was dyed in a solid black brown color with good finish of the hair.

Agent A Silver citrate 5.0% by weight Ammonia 5.0% by weight Purified water up to 100% by weight.

Agent B N-phenylparaphenylenediamine 0.1% by weight 4-amino-2-nitrophenol 0.1% by weight paraaminophenol 0.2% by weight 2-nitroparaphenylenediamine 0.1% by weight paraphenylenediamine 2.1 wt% Pyrogallol 0.2 wt% Resorcin 1.4 wt% Polyoxyethylene (10) oleyl ether 7.0 wt% Isopropanol 10.0 wt% Disodium edetate 0.2 wt% Sodium sulfite 0.5 Weight% Make up to 100% by weight with purified water. <Example 5> As Example 5, a milky liquid hair dye having the following composition was prepared, and the agent A was applied to white hair and left for 1 minute, and then the agent B was applied and left for 1 minute. Then, shampoo was used to wash the hair. As a result, as in Example 1, the dyeing was excellent, and the hair was dyed in a fast brown color with good finish of the hair.

Agent A Silver oxide 3.0% by weight Monoethanolamine 8.0% by weight Cetyl alcohol 0.5% by weight Stearyl trimethyl ammonium chloride 1.0% by weight Propylene glycol 1.5% by weight Glyceryl monostearate 0.2 Weight% Make up to 100% by weight with purified water.

B agent N-phenylparaphenylenediamine 0.2% by weight paraaminophenol 0.2% by weight orthoaminophenol 0.2% by weight paramethylaminophenol sulfate 0.1% by weight 4-nitroparaphenylenediamine 0.1 % By weight 2-nitroparaphenylenediamine 0.1% by weight paraphenylenediamine 2.0% by weight resorcin 1.0% by weight propylene glycol 5.0% by weight ethanol 5.0% by weight cetyl alcohol 2.0% by weight liquid paraffin 1 0.0 wt% sorbitan monooleate 1.0 wt% polyoxyethylene (20) sorbitan monooleate 1.0 wt% distearyldimethylammonium chloride 1.0 wt% stearyltrimethylammonium chloride 0.5 wt% sodium sulfite 0.5 Wt% in purified water 100% by weight. As shown in Examples 2 to 5 above, according to the hair dye of this example, hair can be dyed in a short time of 1 to 3 minutes, excellent dyeing is achieved, and a durable hair dyeing result with good hair finish. was gotten. It was also found that various color tones can be obtained from brown to black by changing the type of dye intermediate.

As described above, according to the hair dye of this embodiment, hair can be dyed in a short time of 5 minutes or less, and it is superior in fastness and reproducibility of dyeing result to the conventional oxidative hair dye. It was possible to obtain a hair dye that has a wide variety of color tones and that allows natural dyeing without damaging the hair. Further, since the hair can be dyed in a short time and the reproducibility of the hair dyeing result is good, there is an advantage that an unskilled person can easily perform the hair dyeing operation without overdying or insufficient dyeing.

The embodiment of the present invention has been described above.
The present invention is not limited to these examples, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

[0031]

As described in detail above, according to the hair dye of the present invention, hair can be dyed in a short time, the fastness and the reproducibility of the hair dyeing result are excellent, and the variety of color tones is excellent. A hair dye that can be naturally dyed without being damaged can be provided.

Claims (1)

[Claims] 1. A hair dye comprising an agent A containing a diammine silver complex salt and / or an ethanolamine silver complex salt and an agent B containing a dye intermediate.