JPH04312514A - Hair dyeing agent - Google Patents

Abstract

PURPOSE:To obtain a hair dyeing agent capable of dyeing hair in a short time, having excellent fastness and reproducibility of hair dyeing effects, various kinds of color tones, providing natural dyeing finish without damaging hair. CONSTITUTION:A hair dyeing agent comprising an agent A containing 0.01-10wt.% calculated as silver content of diamminesilver complex and/or ethanolamine silver complex and an agent B containing 0.01-10wt.% intermediate for dye such as p-phenylenediamine. Hair is coated with the agent A, allowed to stand for 30 seconds to 10 minutes and then with the agent B, allowed to stand for 30 seconds to 10 minutes and dyed.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a hair dye.
Specifically, it relates to a hair dye using a silver complex salt and a dye intermediate.

0002

[Prior Art] Conventionally, hair dyes consist of a first part containing an oxidation dye intermediate and a second part containing an oxidizing agent.
Oxidative hair dyes in the form of formulations are widely used. Oxidation hair dyes penetrate colorless low-molecular oxidation dye intermediates into the hair.
It dyes the hair by producing a pigment by performing oxidative polymerization in the hair. These hair dyes can dye hair in various tones according to requests, and have excellent hair dyeing power, making them very convenient. In addition to oxidative hair dyes, as shown in Japanese Patent Application Laid-Open No. 18438-1848, silver ethanolamine adducts and reducing agents are used as hair dyes that are highly safe and can be dyed in a short time. Hair dye was also present.

0003

[Problems to be Solved by the Invention] However, conventional oxidative hair dyes tend to damage hair during the hair dyeing process. As a result, there are problems in that the hair loses moisture and the dyed color becomes unnatural, giving a sense of discomfort to third parties, and that the combing is difficult and the hair loses its suppleness. Furthermore, there is a drawback that it is necessary to leave the hair dye for 20 to 40 minutes after applying the hair dye, and the person to be treated is restrained for a long time. On the other hand, recently, oxidative hair dyes have appeared that can dye hair in a relatively short time of about 5 to 10 minutes. However, even with this type of hair dye, if you do not leave it on for an appropriate amount of time, for example, if you leave it on for too long, the dye will be too dark, or on the other hand, if you leave it on for too little time, the dye will not be dyed. There was a problem with bad sex. Furthermore, the hair dye of the type disclosed in JP-A-48-18438 mentioned above had problems such as poor hair dyeing power and fastness, and a lack of variety in color tones.

[0004] The present invention solves the above-mentioned problems, allows hair to be dyed in a short time, has excellent fastness and reproducibility of hair dyeing results, has a wide variety of color tones, and provides a natural dyed finish without damaging the hair. The aim is to provide hair dyes that are unique.

[0005]

[Means and effects for solving the problems] The gist of the hair dye of the present invention is that it consists of 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 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 (NH3) 2] It can be produced by dissolving it. Monoethanolamine is particularly preferred as ethanolamine. Diethanolamine, triethanolamine, etc. are somewhat inferior in terms of hair dyeing power.

[Ag(MEA)2]X (MEA is monoethanolamine, X is a monovalent anion) The above silver compounds include silver chloride, silver acetate, silver sulfate, silver nitrate, silver bromide, Examples include silver oxide, silver fluoride, silver oxide, silver chlorate, silver citrate, silver iodate, silver lactate, silver phosphate, etc. Among these, especially silver chloride, silver sulfate, silver oxide, and silver citrate. preferable.

The amount of diammine silver complex salt and/or ethanolamine silver complex salt to be blended is preferably 0.01 to 10% by weight, more preferably 0.01 to 10% by weight, based on the silver content of agent A.
It is 1 to 5% by weight. If the silver content is less than 0.01% by weight, the hair dyeing power tends to decrease, and even if it is blended in more than 10% by weight, no further hair dyeing effect can be expected. If the silver content is 0.1 to 5% by weight, more preferable hair dyeing power can be obtained. Further, it is preferable that the pH of the A agent is adjusted to 8 to 12 because the hair swells and the silver complex ions and the dye intermediate easily penetrate into the hair.

[0009] In addition, examples of dye intermediates to be incorporated into the B agent of the present invention include phenylene diamines, aminophenols, tolylene diamines, diphenylamines, diaminophenols, N-phenylphenyl diamines, and the like. One or two selected from the salts of
There are more than one species. Examples of salts include hydrochloride, sulfate and acetate. Among the dye intermediates mentioned above, para components and ortho components are particularly preferred. For example, para-phenylene diamine, toluene-2,5-diamine, para-aminophenol, ortho-aminophenol, 4,4'
-diaminodiphenylamine, 2,4-diaminophenol, 2,2'-[(4-aminophenyl)imino]bisethanol, para-aminosulfamic acid, 2-chloro-paraphenylenediamine, N-phenyl-paraphenylenediamine, toluene- 3,4-diamine etc. and their salts are preferred, and among these, para-phenylene diamine, toluene-2,5-diamine, para-aminophenol, ortho-aminophenol, 4,4'-diaminodiphenylamine, 2,4-diaminophenol ,2
, 2'-[(4-aminophenyl)imino]bisethanol, para-aminosulfamic acid and salts thereof are preferred. The blending amount of the dye intermediate is 0 based on the total weight of agent B.
．． It is about 0.01 to 10% by weight.

[0010] In addition, the following may be included in the A agent or the B agent. - Couplers: resorcinol, pyrogallol, catechol, meta-aminophenol, meta-phenylenediamine, toluene-2,4-diamine, hydroquinone, α-naphthol, etc., 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 dyes: Azo dyes, nitroso dyes, triphenylmethane dyes, xanthene dyes, quinoline dyes, anthraquinone dyes, indigo dyes, etc. "Ministerial Ordinance Specifying Tar Colors That Can Be Used in Pharmaceuticals, etc." (Notified in 1966) Ministry of Health and Welfare). By combining these, various color tones can be obtained.

Furthermore, surfactants such as polyoxyethylene alkyl ether and polyoxyethylene alkylamine fatty acid amide, humectants such as glycerin and propylene glycol, oily components such as lanolin, squalane and liquid paraffin, sulfites, ascorbic acid, etc. stabilizers, thickeners such as carboxymethyl cellulose, higher alcohols,
A pH adjuster, fragrance, etc. can be added as appropriate.

The hair dye of the present invention can be in various forms such as liquid, cream, gel, paste, emulsion, aerosol, and aerosol foam. In addition, the hair dyeing method using the hair dye of the present invention includes applying Agent A and applying it for 30 seconds to 1 hour.
After leaving it for 0 minutes, preferably 1 to 5 minutes, continue to apply agent B and leave it for 30 seconds to 10 minutes, preferably 1 to 5 minutes, and the hair can be dyed to a natural tone. Also, B
Hair can be dyed by applying Agent A after applying Agent A, but a different color tone will be obtained than when Agent A is applied first. The reason why the color tone obtained is different when applying Part A first and when applying Part B first is that the produced silver, This is thought to be due to the difference in the production ratio of the silver-dye intermediate complex and the reaction product between the dyes.

The present invention is also useful for dyeing not only human hair but also keratin fibers such as wool, natural fibers, synthetic fibers, and animal hair and skin. To provide a hair dye that can dye hair in a short time, has excellent fastness and reproducibility of hair dyeing results, has a wide variety of color tones, and can provide natural dyed results without damaging the hair. This is thought to be possible due to the following reasons. That is, when the diammine silver complex ion and/or ethanolamine silver complex ion of agent A penetrates into the inside of the hair and reacts with the dye intermediate of agent B, the diammine silver complex ion and/or ethanolamine silver complex ion is reduced. It is assumed that hair is dyed by silver, a complex of a silver-dye intermediate, and a reaction product between dyes. Since the reaction completes in a short time,
It becomes possible to dye hair in a short time. In addition, since the reaction product strongly binds to keratin protein, it has excellent fastness to washing. Furthermore, the reaction product has excellent fastness to light. Furthermore, since the reaction is completed in a short time, the color density and tone do not vary depending on the length of the standing time, and the reproducibility of hair dyeing results is excellent. Moreover, various color tones can be set by setting the types, combinations, and concentrations of silver complex ions and dye intermediates. Furthermore, unlike conventional oxidative hair dyes, hydrogen peroxide, which is an oxidizing agent, is not used, so there is little damage to the hair, and the hair is naturally dyed with moisture.

[0014]

EXAMPLES In order to further clarify the structure and operation of the present invention described above, preferred examples of the present invention will be described below. <Example 1 and Comparative Example 1> Example 1 and Comparative Example 1 (normal oxidative hair dye) having the compositions shown below were prepared. - Example 1 Part A Silver chloride 1.5% by weight Ammonia 3.0% by weight Make 100% with purified water.

B agent p-phenylenediamine 1.0% by weight
Propylene glycol 10.0% by weight
EDTA-Na 0.
3% by weight sodium sulfite
Make up to 100% with 0.2% by weight purified water. - 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
Adjust the amount to pH 10 and make it 100% with purified water.

Second agent hydrogen peroxide
Make 100% with 6.0% by weight purified water. Regarding Example 1 and Comparative Example 1, a comparative test was conducted on the reproducibility of hair dyeing results, washing fastness, and sunlight fastness using the method shown below. (1) Comparison test for reproducibility of hair dyeing results Agent A of Example 1 was applied to white goat hair strands and left to stand for 3 minutes, then Agent B was applied and left to stand 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 Agent B. Further, the first agent and the second agent of Comparative Example 1 were mixed at a ratio of 1:1, and the mixture was similarly applied to a white goat hair strand and left for a certain period of time. Then shampoo, rinse and dry. Table 1 shows the hair dyeing results obtained by changing the length of time after application. However, in Table 1, the hair dyeing results were evaluated according to the following evaluation criteria. -Evaluation criteria: ○: dyed blackish brown.

Δ: Slightly dyed. ×: Almost no staining. □: Too darkly dyed. This comparative test revealed that
It can be seen that the hair dye of Example 1 finishes dyeing the hair bundle in a short time (1 minute), and the reaction does not proceed any further even if left for a long time. On the other hand, the oxidative hair dye of Comparative Example 1 hardly dyes when left for a shorter time than the optimum time (20 to 30 minutes).
On the other hand, if it is long, the dye will be too dark. Therefore, according to the hair dye of this example, hair can be dyed in a shorter time than conventional oxidative hair dyes, and the length of the leaving time is less likely to affect the hair dyeing results, and the reproducibility of the hair dyeing results is improved. good.

[0018]

[Table 1]

(2) Comparative test of washing fastness A hair dyeing operation similar to that in the comparative test (1) was carried out to prepare hair bundles using Example 1, which were left for 5 minutes. As a result, the hair was dyed to a blackish-brown color with excellent finish and a good finish. Similarly, hair dyeing operations similar to those in the comparative test (1) were performed to create hair bundles using Comparative Example 1 that were left to stand for 30 minutes. Both hair strands were soaked in a 2% sodium lauryl sulfate aqueous solution at 50°C.
Soaked for 5 minutes. This soaking treatment corresponds to 2 to 3 weeks when the hair is shampooed once a day. When compared with dyed hair that was not subjected to the treatment, the following results were obtained. - Hair bundle treated in Example 1: Almost no change. - Hair bundle treated in Comparative Example 1: Discoloration is observed. (3) Comparative test of sunlight fastness The same hair dyeing procedure as in the comparative test of (1) was carried out to create hair bundles using Example 1, which were left for 5 minutes. As a result, the hair was dyed to a blackish-brown color with excellent finish and a good finish. Similarly, hair dyeing operations similar to those in the comparative test (1) were performed to create hair bundles using Comparative Example 1 that were left to stand for 30 minutes. Place both strands of hair near a south-facing window to block direct sunlight.
Guess the week. When compared with dyed hair that was not subjected to this operation, the following results were obtained. - 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, hair strands can be dyed in a short time to a blackish-brown color with excellent coloring and a good finish. Fastness is also superior to conventional oxidative hair dyes. <Example 2> As Example 2, a gel-like hair dye having the composition shown below was prepared, and after applying part A to gray hair and leaving it for 3 minutes, part B was applied and left for 3 minutes. Thereafter, the hair was washed using shampoo. As a result, as in Example 1, the dyeing was excellent and the hair was dyed to a solid dark brown color with a good finish.

A agent silver sulfate
3.0% by weight monoethanolamine
5.0% by weight amyl paradimethylaminobenzoate 0.5% by weight cetanol
2.0% by weight Sodium lauryl sulfate 0
．． Adjust to 100% by weight with 5% by weight purified water.

Agent B Toluene-2,5-diamine
1.0% by weight meta-aminophenol
0.1% by weight resorcinol

0.2% by weight Lauric acid diethanolamide 1
0.0% 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 fragrance

Adjust to 100% by weight with an appropriate amount of purified water. <Example 3> As Example 3, a cream hair dye having the composition shown below was prepared, and after applying part A to gray hair and leaving it for 3 minutes, part B was applied and left for 3 minutes. Thereafter, the hair was washed using shampoo. As a result, as in Example 1, the dyeing was excellent and the hair was dyed to a solid black color with a good finish.

A agent silver nitrate
2.0% by weight ammonia
4.0% by weight cetanol
5.0% by weight Sodium lauryl sulfate 0.5% by weight Make up to 100% by weight with purified water.

Agent B 2,2'-[(4-aminophenyl)imino]
Gas ethanol sulfate 2.0% by weight
orthoaminophenol
0.5% by weight resorcinol
0.5
Weight% polyoxyethylene cetyl ether
3.0% by weight Cetostearyl alcohol 8.0% by weight
liquid paraffin
2.0% by weight fragrance

Adjust to 100% by weight with an appropriate amount of purified water. <Example 4> As Example 4, a liquid hair dye having the composition shown below was prepared, and after applying part A to gray hair and leaving it for 1 minute, part B was applied and left for 1 minute. Thereafter, the hair was washed using shampoo. As a result, as in Example 1, the dyeing was excellent and the hair was dyed to a solid dark brown color with a good finish.

Part A silver citrate 5.
0% by weight ammonia
Adjust to 100% by weight with 5.0% by weight purified water.

Agent B N-phenylparaphenylenediamine
0.1% by weight 4-amino-2-nitrophenol 0.1% by weight para-aminophenol
0.2% by weight 2-nitroparaphenylenediamine 0.1% by weight paraphenylenediamine 2
．． 1% by weight pyrogallol
0.2% by weight
resorcinol
1.4% by weight Polyoxyethylene (10) oleyl ether 7.0% by weight Isopropanol
10.0% by weight edetate disodium
0.2% by weight Sodium sulfite
0.5% by weight
Make up to 100% by weight with purified water. <Example 5> As Example 5, an emulsion-like hair dye having the composition shown below was prepared, and after applying part A to gray hair and leaving it for 1 minute, part B was applied and left for 1 minute. Thereafter, the hair was washed using shampoo. As a result, as in Example 1, the hair was dyed to a strong brown color with excellent finish and a good finish.

Agent A Silver oxide
3.0% by weight
monoethanolamine
8.0% by weight cetyl alcohol
0.
5% by weight Stearyltrimethylammonium chloride 1.0% by weight Propylene glycol 1.5% by weight Glyceryl monostearate
Adjust to 100% by weight with 0.2% by weight purified water.

Agent B N-phenylparaphenylenediamine
0.2% by weight para-aminophenol
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 resorcinol

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% by weight Sorbitan monooleate
1.0% by weight Polyoxyethylene (20) sorbitan monooleate 1.0% by weight
Distearyldimethylammonium chloride
1.0% by weight Stearyltrimethylammonium chloride 0
．． 5% by weight sodium sulfite
0
．． Adjust to 100% by weight with 5% by weight purified water. Above example 2
As shown in 5, the hair dye of this example was able to dye hair in a short time of 1 to 3 minutes, had excellent color finish, and produced durable hair dyeing results with a good finish. . In addition, by changing the type of dye intermediate, we can produce colors ranging from brown to black.
It was found that various color tones can be obtained.

As described above, the hair dye of this example can dye hair in a short time of 5 minutes or less, has better fastness and reproducibility of dyeing results than conventional oxidative hair dyes, We were able to obtain a hair dye that comes in a wide variety of colors and provides a natural finish without damaging the hair. Further, since hair can be dyed in a short time and the reproducibility of hair dyeing results is good, there is no possibility of over-dying or under-dying, and even an unskilled person can easily dye the hair.

Although the embodiments of the present invention have been described above,
The present invention is not limited to these embodiments in any way, and it goes without saying that it can be implemented in various forms without departing from the gist of the present invention.

[0031]

[Effects of the Invention] As detailed above, the hair dye of the present invention can dye hair in a short time, has excellent fastness and reproducibility of hair dyeing results, has a wide variety of color tones, and can dye hair in a short time. It is possible to provide a hair dye that can give a natural finish without damaging the hair.

Claims (1)

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