JP2686696B2 - Hair dye - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a hair dye,
Specifically, it relates to a hair dye comprising an agent A containing a copper salt and an agent B containing a dye intermediate.

[0002]

2. Description of the Related Art Conventionally, as a hair dye, a two-pack type oxidative hair dye comprising a first agent containing an oxidative dye intermediate and a second agent containing an oxidant has been widely used. This hair coloring agent is a dye that causes a colorless low-molecular weight oxidation dye intermediate to penetrate into the hair and causes oxidative polymerization in the hair to form a pigment to dye 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.

[0003]

However, in the conventional 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 makes a third person feel uncomfortable, and the combability is poor and the suppleness of the hair is lost. Further, after applying the hair dye, there is a drawback that it requires a leaving time of 20 to 40 minutes, which restrains the subject for a long time. On the other hand, recently, the leaving time is 5 minutes to 10 minutes.
An oxidative hair dye that can dye hair in a relatively short time of about a minute has also appeared. However, even with such a hair dye, if the proper standing time is not taken, for example, if the standing time is too long, the hair is dyed too deeply, or conversely, if the standing time is too short, the hair is not dyed. Since the reproducibility is poor and it is difficult to obtain the expected color tone, there is a problem that the practitioner requires technical skill.

[0004]

In view of the above-mentioned circumstances, the present inventor has been able to dye hair in a short time, has excellent reproducibility and fastness, does not damage the hair, and has a moist and natural hair. As a result of extensive studies aimed at obtaining a hair dye composition that will be dyed, as a result, agent A containing a copper salt and B containing a dye intermediate
The inventors have found that the object of the present invention can be achieved by a hair dye characterized by comprising an agent, and have completed the present invention.

As the copper salt used in the agent A of the present invention,
Examples thereof include chloride, sulfate, nitrate, acetate, lactate, glycinate and sulfonate. Among these, chlorides, sulfates, nitrates and acetates are particularly preferable. The blending amount is 0.01 to 10% by weight, and preferably 0.1.
1 to 5% by weight.

Further, the agent A and / or the agent B has a pH of 8
When it is adjusted to ~ 12, the hair swells and the copper ions and the dye intermediate easily penetrate into the hair.
preferable. To adjust to that pH, ammonia,
Monoethanolamine, diethanolamine, triethanolamine, sodium hydroxide, 2-amino-2-methyl-1,3-propanediol or 2-amino-2
-Methyl-1-propanol or the like is used. Among these, ammonia or monoethanolamine is preferable from the viewpoint of hair dyeing power.

Examples of dye intermediates used in the agent B of the present invention include phenylenediamines, aminophenols, toluylenediamines, diphenylamines, diaminophenols, N-phenylphenylenediamines and salts thereof. 1 type (s) or 2 or more types are mentioned. The salts include hydrochloride, sulfate, acetate and the like. Among these, 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]. Examples thereof include bisethanol, paraaminosulfamic acid, 2-chloro-paraphenylenediamine, N-phenyl-paraphenylenediamine, toluene-3,4-diamine and salts thereof. Among these, particularly, paraphenylenediamine, toluene-2,5-diamine, paraaminophenol, orthoaminophenol, 4,4′-diaminodiphenylamine, 2,4-diaminophenol, 2,2 ′-[(4-aminophenyl) Imino] bisethanol, paraaminosulfamic acid and salts thereof are preferred. The blending amount is, for example,
It is about 0.01 to 10% by weight based on the total weight of the second agent.

[0008] In addition, the following can be mentioned as a compound which can be blended with the agent A or agent B. For example,
As a coupler, resorcin, pyrogallol, catechol, metaaminophenol, metaphenylenediamine, toluene-2,4-diamine, hydroquinone, α
-Naphthol and the like and salts thereof can be blended. Other dyes include 2-nitroparaphenylenediamine, 4-nitroorthophenylenediamine, 2-
Amino-4-nitrophenol, 2-amino-5-nitrophenol, 2,6-diaminopyridine, 1,5-dihydroxynaphthalene, 5-aminoorthocresol,
Piclamic 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 and the like and salts thereof can be blended. Tar dyes include azo dyes, nitroso dyes, triphenylmethane dyes, xanthene dyes, quinoline dyes, anthraquinone dyes, and indigo dyes. ) Can be used. 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, p
An H regulator, a fragrance, and the like can be appropriately blended as necessary.

The hair dye of the present invention may be in various forms such as liquid, cream, gel, paste, emulsion, aerosol and aerosol foam. Further, as a hair dyeing method using the hair dye of the present invention, the agent A is applied and
After left for seconds to 10 minutes, preferably 1 minute to 5 minutes, continuously apply the agent B and leave it for 30 seconds to 10 minutes, preferably 1 minute to 5 minutes to dye the hair in a natural color tone. can do. Hair can also be dyed by applying agent A after applying agent B. However, a color tone different from that when the agent A is applied first is obtained. It is considered that this is because the ratio of the produced copper-dye intermediate complex and the reaction product of the dyes to each other differs depending on which of the copper ion and the dye intermediate penetrates into the hair first.

The present invention is also useful for dyeing human hair, keratin fibers such as wool, natural fibers, synthetic fibers, and animal hair and skin.

[0012]

In the hair dye of the present invention, when the copper ion of the agent A penetrates into the hair and the dye intermediate of the agent B acts on the hair, a complex of the copper-dye intermediate and a reaction product of the dyes are produced. It is presumed that hair is dyed when it occurs. Moreover, since these bind strongly to the keratin protein, they have excellent fastness to washing and light. 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 obtained by setting the type, combination and concentration of the copper ion and the dye intermediate. Further, unlike the conventional oxidative hair dye, no oxidant is used, so that the hair can be naturally moisturized with almost no damage to the hair.

[0013]

EXAMPLES Next, the present invention will be described more specifically by way of examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof.

<Comparative Experiment> Using Example 1 and Comparative Example 1, a comparative experiment was conducted by the following methods for reproducibility of hair dyeing results, washing fastness and sunlight fastness.

<Example 1>

<Comparative Example 1> First agent (% by weight) p-phenylenediamine 1.0 propylene glycol 10.0 EDTA-Na 0.3 sodium sulfite 0.2 ammonia pH 10 Amount to be 100% with purified water . Second agent (wt%) Hydrogen peroxide 6.0 Make up to 100% with purified water.

(1) Comparative Test of Reproducibility of Hair Dyeing Result The agent A of Example 1 is applied to a white goat bundle of goats and left for 3 minutes, 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. In addition, the first agent and the second agent of Comparative Example 1 are mixed at a ratio of 1: 1 and 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 results of dyeing hair with different leaving times. However, the evaluation of hair dyeing results complied with the following criteria.

<Evaluation Criteria> O ... Dyes in blackish brown. △ ... Slightly dyed. X: Almost no stain. □ ... Too deep black dyeing.

According to this comparative test, the hair dye of Example 1 was dyed to the hair bundle in a short time (1 minute), and the reaction did not proceed even if left for a long time. Recognize. On the other hand, it can be seen that the oxidative hair dye of Comparative Example 1 hardly dyes when it is shorter than the optimum leaving time (20 minutes to 30 minutes), and conversely when it is long, it is deeply dyed. Therefore, according to the hair dye of the present invention, the 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 good. .

[0020]

[Table 1]

(2) Washing fastness comparative test The same hair dyeing operation as in Comparative test 1 of (1) was carried out to prepare a hair bundle using Example 1 for a leaving time of 5 minutes. Also,
The same hair dyeing operation as in the comparative experiment of (1) was performed to prepare a hair bundle using Comparative Example 1 for a leaving time of 30 minutes. Both hair tresses were immersed in a 2% aqueous solution of sodium lauryl sulfate at 50 ° C for 15
Soak for minutes. This immersion treatment corresponds to 2-3 weeks when the hair is shampooed once daily. The following results were obtained when compared with dyed hair not subjected to the above operation.

The hair bundle treated in Example 1 ... Almost no change. -Hair bundle treated in Comparative Example 1 ... Discoloration is observed.

(3) Comparative test of fastness to sunlight The same hair dyeing operation as in Comparative test 1 of (1) was carried out to prepare a hair bundle using Example 1 for a leaving time of 5 minutes. Also,
The same hair dyeing operation as in the comparative experiment of (1) was performed to prepare a hair bundle using Comparative Example 1 for a leaving time of 30 minutes. Place both hair strands by the window facing south and direct sunlight for 2 weeks. The following results were obtained when compared with dyed hair not subjected to the above operation.

The hair bundle treated in Example 1 ... Almost no change. -Hair bundle treated in Comparative Example 1 ... Discoloration is observed.

As described above, according to this embodiment, a hair bundle can be dyed in a dark brown color which is excellent in dyeing and finishes well, the reproducibility of the hair dyeing result is good, and washing and sunlight are performed. Fastness is also superior to conventional oxidative hair dyes.

<Example 2> Gel hair dye A agent (wt%) cupric chloride (CuCl ₂ ) 3.0 monoethanolamine 5.0 para-dimethylamino amyl benzoate 0.5 cetanol 2.0 Sodium lauryl sulfate 0.5 Make up to 100% with purified water. Agent B (% by weight) Toluene-2,5-diamine 1.0 Metaaminophenol 0.1 Resorcin 0.2 Lauric acid diethanolamide 10.0 Polyoxyethylene nonylphenyl ether 20.0 Oleic acid 5.0 Polyethylene glycol 20 0.0 Monoethanolamine 3.0 Sodium sulfite 0.5 Perfume Suitable amount Make up to 100% with purified water. A gel hair dye having the above composition is prepared, and agent A is applied to gray hair and left for 3 minutes, and then agent B is applied. After leaving for 3 minutes, the hair was washed with shampoo. As a result, as in Example 1, the dyeing was excellent, and the hair was dyed in a solid black brown color with good hair finish.

<Example 3> Agent A (% by weight) Copper nitrate 2.0 Cetanol 5.0 Sodium lauryl sulfate 0.5 0.5% to 100% with purified water. Agent B (% by weight) 2,2 '-[(4-aminophenyl) imino] bisethanol sulfate 2.0 orthoaminophenol 0.5 resorcin 0.5 polyoxyethylene cetyl ether 3.0 cetostearyl alcohol 8. 0 Liquid paraffin 2.0 Perfume proper amount Make up to 100% with purified water. A creamy hair dye having the above composition is prepared, and the agent A is applied to white hair and left for 3 minutes, and then the agent B is applied. After leaving it for 3 minutes, the hair was washed with shampoo. As a result, as in Example 1, the dyeing was excellent, and the hair was dyed in a solid black color with a good finish of the hair.

Example 4 Agent A (wt%) Copper acetate 5.0 Ammonia 5.0 100% with purified water. Agent B (% by weight) N-phenylparaphenylenediamine 0.1 4-amino-2-nitrophenol 0.1 paraaminophenol 0.2 2-nitroparaphenylenediamine 0.1 paraphenylenediamine 2.1 pyrogallol 0.2 Resorcin 1.4 Polyoxyethylene (10) oleyl ether 7.0 Isopropanol 10.0 Triethanolamine 3.0 Disodium edetate 0.2 Sodium sulfite 0.5 Made to 100% with purified water. A hair dye having the above composition is prepared, and the agent B is applied to white hair and left for 1 minute, and then the agent A is applied. After leaving for 1 minute, the hair was washed with shampoo. As a result, Example 1
As with the above, it was dyed in a dark brown color that is excellent in dyeing and has a good hair finish.

<Example 5> Agent A (% by weight) Cuprous chloride (CuCl) 3.0 2-amino-2-methyl-1,3-propanediol 8.0 Cetyl alcohol 0.5 Stearyltrimethylammonium chloride 1.0 Propylene glycol 1.5 Glyceryl monostearate 0.2 Bring to 100% with purified water. B agent (% by weight) N-phenylparaphenylenediamine 0.2 paraaminophenol 0.2 orthoaminophenol 0.2 paramethylaminophenol sulfate 0.1 4-nitroparaphenylenediamine 0.1 2-nitroparaphenylenediamine 0 .1 Paraphenylenediamine 2.0 Resorcinol 1.0 Propylene glycol 5.0 Ethanol 5.0 Cetyl alcohol 2.0 Liquid paraffin 1.0 Sorbitan monooleate 1.0 Polyoxyethylene (20) sorbitan monooleate 1. 0 distearyl dimethyl ammonium chloride 1.0 stearyl trimethyl ammonium chloride 0.5 sodium sulfite 0.5 made up to 100% with purified water. A hair dye having the above composition is prepared, agent A is applied to white hair, left for 1 minute, and then agent B is applied. And after leaving for 1 minute,
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.

[0030]

[Effect] The hair dye of the present invention is better than the conventional oxidative hair dye.
Can dye hair in a short time. In addition, the hair dyeing result does not differ depending on the length of the standing time, and the expected hair dyeing result is always obtained and the reproducibility is excellent. Therefore, there is an advantage that even an unskilled person can easily perform a hair dyeing operation. Further, it has an advantage that it has a wide variety of colors and can be dyed in a natural color, resulting in a moist and natural dyeing. It also has excellent wash and light fastness. Further, since hydrogen peroxide is not used unlike the conventional oxidative hair dye, there is an effect that hair is hardly damaged.

Claims (1)

(57) [Claims] 1. A agent containing a copper salt and phenylenediamine
, Aminophenols, toluylenediamines, dif
Phenylamines, diaminophenols, N-phenyl
From the group consisting of phenylenediamines and their salts
A hair dye, comprising a B agent containing one or more selected dye intermediates.