DE4122748A1 - Inexpensive physiologically tolerated oxidative hair dyeing agent - comprising 2,5-di:amino:toluene-2,6-di:amino:pyridine, resorcinol and amino-methylphenol or its deriv(s). - Google Patents

Abstract

Developer-coupler combination based oxidative hair-dyeing agent contains 2,5-diaminotoluene as developer and (i) 2,6-diaminopyridine; (ii) resorcinol; and (iii) one or more cpds. of formula (I) as couplers, where R1 is H, F, Cl, Br or I; R2 is H, 1-4C hydroxyalkyl or 2-4C dihydroxyalkyl. In cpds. of formula (I), the methyl gp. is para- to the NHR2 gp., and R1 is ortho- or para- to the hydroxyl gp. and ortho to the NHR2 gp.. Pref. R1, R2 are H. (I) is pref. 5-amino-4-chloro- or 5-amino-4-fluoro-2-methylphenol or 3-amino-2-chloro-6-methylphenol and esp. 5-amino- or 5-((2'-hydroxyethy)-amino)- or 5-((3'-hydroxyphenol)-amino)- 2-methylphenol. The developer is pref. at least one of 1,4-diaminobenzene, 2-(2',5'-diaminophenyl)-ethanol, 4-aminophenol or 4-amino-3-methylphenol. The coupler is pref. at least one of 4-chlororesorcinol, 3-aminophenol, 5-hydroxy-1,3-dioxobenzene or 5-((2'-hydroxy)-amino)- 1,3-dioxobenzene. Agent pref. contains one of 2-amino-5-methylphenol, 2-amino-6-methylphenol or 2-amino-5-ethoxyphenol as self-coupling dye precursor. Pref. agent may contain at least one of the following direct dyes: Diamond Fuchsin (CI 42510); Basic Blue 26 (CI 44045); picramic acid; 2-((2'-hydroxyethyl)amino)- 4,6-dinitrophenol; 4-((2'-hydroxyethyl)-amino) -2-nitroaniline; Acid Brown 4 (CZ 14805); Acid Blue 135 (CI 13385); Disperse Violet 4 (CI 61105); Disperse Red 15 (CI 60710); or Disperse Violet (CI 61100). ADVANTAGE - The component materials are both cheap and physiologically well tolerated. The agent produces colours that are very stable to light, washing and chemical reagents.

Description

The invention relates to a means for oxidative coloring of hair, the developer substance 2,5-diaminotoluene in combination with the coupler ler substances 2,6-diaminopyridine, resorcinol and determ ten aminophenol derivatives is used.

Oxidative hair coloring procedures have been used in hair coloring xis - especially for the production of dark color nuances cen - achieved widespread use. With these ver the hair dyes are driven by oxidative coupling development of suitable developer substances and couplers Substances created in the hair shaft, making it very intimate active dyeings with very good fastness properties be preserved. In addition, the combination various developer substances and coupler substances zen get a variety of different shades be.

On oxidation dyes that are used to color human Hair to be used are numerous of their requirements. The dyes must be in toxicologically and dermatologically harmless be colored and colored in the desired intensity enable. Furthermore, for the hair dye achieved good light, permanent wave, acid and rub resistance required. In any case, such hair dye must without exposure to light, friction and chemical Average over a period of at least four to remain stable for six weeks.  

For the generation of black tones or blonde ash the use of blue couplers is almost inevitable Lich. Known and used blue couplers for a long time are, for example, 1,3-diaminobenzene and 2,4-diamino anisole. Certain pyridine derivatives, for example 2,6-diaminopyridine, as a blue coupler described.

The use of the above m-phenylenedi amine derivatives in hair dye is with Pro blemen connected. So 1,3-diaminobenzene can because of Instability of the dyeings obtained is not fully peaceful while using 2,4-diaminoanisole for toxicological and physiological reasons ver was offered.

2,6-diamino pyridine is in DE-AS 11 42 045 as Blue coupler in combination with the developer substance 2,5-Diaminotoluol described and was also in the Subsequent times as part of oxidation hair dye mentioned in various publications. Furthermore, 2,6-diaminopyridine is relatively inexpensive available in the stores. Still, that's 2,6-diaminopy ridin not or only to a very small extent in the Practice has been used in hair dyes. The reason this is because 2,6-diaminopyridine with the Developer substance p-phenylenediamine only weakly colored, results in violet tones of blue. In combination with the In contrast, developer substance 2,5-diaminotoluene is formed less intense, greenish blue tones with unnatural chem color character, which is not for the production dark nuances, especially black tones, suitable are not.

It was therefore the task of an oxidation hair dye medium - especially for the production of dark or black shades - to provide which the disadvantages described above, such as instability of the colorations obtained or lack of physiological Avoids tolerance and also costs is cheap.

It has now surprisingly been found that an agent for the oxidative coloring of hair on the basis of a Developer substance-coupler substance combination, which as developer substance

• A) 2,5-diamino-toluene and as coupler substances
• B) 2,6-diaminopyridine,
• C) resorcinol and
• D) one or more of the compounds which are selected from the compounds of the general formula (I) wherein R ^{1 represents} one of the radicals H, F, Cl, Br or J and R ^{2 represents} one of the radicals H, C ₁ -C ₄ -hydroxyalkyl or C ₂ -C ₄ -dihydroxyalkyl, which solves the problem in an outstanding manner.

The developer substance coupler according to the invention Substance combination enables more saturated, bluer ones and more natural-looking hair colors - especially with dark shades and black tones - which ones above are more wear-resistant than the combination of 2.5 Diamino-toluene and 1,3-diaminobenzene alone. The new Hair dyes are therefore also hair dyes with clearly superior to a content of 1,3-diaminobenzene.

Because in the manufacture of hair dye for dark and black shades usually high dye con concentrations are required, strain the dye cost the price of the end product in large measure. In the developer substance-coupler substance according to the invention In combination, only inexpensive dyes are used rate, which results in considerable cost savings compared to conventional hair dyes.

In the hair dye according to the invention, the Component A) in an amount of 0.5 to 8 wt zent, preferably 1 to 7 weight percent, the Kompo nente B) in an amount of 0.01 to 3 percent by weight, preferably 0.02 to 2 weight percent, the component C) in an amount of 0.1 to 3 percent by weight preferably 0.4 to 3 percent by weight, and the component D) in an amount of 0.01 to 2 percent by weight preferably 0.01 to 1 percent by weight.  

Of the compounds of the general formula (I), preference is given to those in which the methyl radical is in the para position to the NHR ² group and the radical R ^{1 is} in the para position to the OH group, and those compounds in which the Methyl radical in the para position to the NHR ² group and the radical R ¹ in the ortho position to the OH group and the NHR ² group.

The compounds of the formula (I) in which the radical R ¹ and / or the radical R ^{2 is} hydrogen are highly suitable for the hair colorant according to the invention.

Examples are compounds of formula (I)
5-amino-2-methylphenol,
5 - ((2′-hydroxyethyl) amino) -2-methylphenol,
5 - ((3'-Hydroxypropyl) amino) -2-methylphenol
5-amino-4-chloro-2-methylphenol,
5-amino-4-fluoro-2-methylphenol and
Called 3-amino-2-chloro-6-methylphenol,
again the connections
5-amino-2-methylphenol,
5 - ((2′-hydroxyethyl) amino) -2-methylphenol,
5 - ((3'-Hydroxypropyl) amino) -2-methylphenol
preferred and the compound 5-amino-2-methylphenol be particularly preferred.

To create certain shades of color can in the hair dyes according to the invention still further known Developer substances and coupler substances, preferably two se in an amount of 0.1 to 4 percent by weight to be hold.  

Of the known developer substances come as Be Part of the hair dye according to the invention in addition Component A) especially the compounds 1,4-diami nobenzol, 2- (2 ', 5'-diaminophenyl) ethanol, 4-aminophe nol and 4-amino-3-methylphenol into consideration. The got Developer substances can be used individually or in Mixture can be used together. From the well-known Coupler substances come in particular 4-chlororesorcinol, 3-aminophenol, 5-hydroxy-1,3-benzodioxole, 5-amino-1,3- benzodioxole and 5 - ((2'-hydroxyethyl) amino) -1,3-benzo dioxole into consideration.

Such substances known and customary for hair coloring Zen are, among others, in the book by E. Sagarin, "Cosmetics, Science and Technology", Interscience Publishers Inc., New York (1957), pages 503 ff. And in the book by H. Janistyn, "Handbook of Cosmetics and fragrances "(3rd improved edition 1978, ISBN 3-7785-0423-1), page 454 ff.

The developer substances are generally approximately equimolar amounts, based on the coupler substances, used. However, it is not a disadvantage if the Developer substances, based on the amount of the dome l substances, in an excess or a deficit be set.

The hair dye according to the invention can continue also with self-coupling pre-colors, such as Example 2-amino-5-methylphenol, 2-amino-6-methylphenol or contain 2-amino-5-ethoxyphenol.  

To achieve certain shades of color can also usual direct dyes, for example tri phenylmethane dyes such as Diamond Fuchsine (C.I. 42 510) or Basic Blue 26 (C.I. 44 045), aromatic Nitro dyes such as picramic acid or 2 - ((2′Hydroxy ethyl) amino) -4,6-dinitrophenol, 4 - ((2′-hydroxyethyl) -amino) -2-nitroaniline, azo dyes such as Acid Brown 4 (C.I. 14 805) and Acid Blue 135 (C.I. 13 385) or Anthraquinone dyes such as Violet 1 (C.I. 61 100) in contain an amount of 0.01 to 4 weight percent be.

Other suitable colors that apply directly to the hair fabrics are described, for example, in the book by J.C. John son, "Hair Dyes," Noyes Data Corp. Park Ridge United States (1973).

The developer and coupler substances as well as the others Color components can of course, provided it are bases, also in the form of physiological compatible acid addition salts, for example as Hydrochloride or sulfate, or if aromatic Contain hydroxyl groups, in the form of salts with anor ganic bases, for example as alkali phenolates be used.

Especially with amino compounds sensitive to oxidation it is advantageous if these are used in the manufacture of the Hair dyes in the form of their salts are used. Therefore, for example, 2,5-diaminotoluene is used preferably used in the form of its sulfate. The 2,6- Diaminopyridine can be in the form of on an industrial scale  Scale available free base or, because this is just if it is sensitive to oxidation, advantageously in the form its monohydrochloride or its hemisulfate ver be applied.

The total amount of developer substances, the coupler substances, the self-coupling pre-colors and the direct dyes or their salts, used in the hair dye according to the invention is about 0.1 to 10.0 percent by weight preferably 3.0 to 8.0 percent by weight.

In addition, in the hair dye white tere common cosmetic additives, such as anti oxidants such as ascorbic acid or sodium sulfite, par for oils, complexing agents, wetting agents, emulsifiers, ver thicker, care substances and others are present.

The form of preparation can, for example, be a solution, especially an aqueous or aqueous-alcoholic solution solution. The particularly preferred preparation for However, men are a cream, a gel or an emulsion. Their composition represents a mixture of colors Substance components with the usual for such preparations additions.

Common additives in solutions, creams, emulsions or For example, gels are never solvents like water their aliphatic alcohols, for example ethanol, Propanol and isopropanol, or glycols such as glycerin and Glycol ethers such as propylene glycol, still wetting agents or emulsifiers from the classes of anionic,  cationic, amphoteric or non-ionic surface active substances such as fatty alcohol sulfates, alkyl sulfonates, alkylbenzenesulfonates, alkyltrimethylammoni salts, alkyl betaines, ethoxylated fatty alcohols, oxe thylated nonylphenols, fatty acid alkanolamines, oxethy gated fatty acid esters, also thickeners such as higher Fatty alcohols, starch, cellulose derivatives, petroleum jelly, Paraffin oil and fatty acids as well as care substances such as lanolin derivatives, cholesterol, pantothenic acid and Betaine.

The components mentioned are in the for such Uses usual amounts, for example the Wetting agents and emulsifiers in concentrations of approx 0.5 to 30 percent by weight, the thickeners in one Amount of about 0.1 to 25 weight percent and the Care substances in an amount of about 0.1 to 5 Percent by weight.

Depending on the composition, the inventive Hair dye weakly acidic, neutral or alkaline react. In particular, they have a pH in the alkaline range between 8.0 and 11.5, where the setting is preferably carried out with ammonia. It can also use organic amines, for example mono ethanolamine and triethanolamine, or inorganic Bases like sodium hydroxide and potassium hydroxide use Find.

For use in the oxidative coloring of hair one mixes the hair dye described above with immediately before use with an oxidizer medium and carries one for the hair dye treatment sufficient amount, depending on the fullness of the hair, generally about 60 to 200 g, this mixture on the hair.  

As an oxidizing agent for the development of hair coloring come mainly hydrogen peroxide or its Addition compounds to urea, melanin or natri umborate in the form of 3 to 12%, preferably 6% aqueous solutions.

If a 6% hydrogen peroxide solution as Oxidati Onsmittel used, the weight ratio is between hair dye and oxidizer 5: 1 to 1: 2, but preferably 1: 1. Larger amounts of oxida tion agents are used especially at higher dye concentrations concentrations in the hair dye or if at the same time a stronger bleaching of the hair is intended used.

The mixture is left at 15 to 50 ° C for about 10 to 45 Minutes, preferably 30 minutes, on the Soak in the hair, then rinse the hair with water and dry it. If necessary, the following this conditioner washed with a shampoo and possibly with a weak organic acid, such as Citric acid or tartaric acid, rinsed. Subsequently the hair is dried.

The hair dye according to the invention leads to hair dye exercises with excellent fastness properties, ins special when it comes to light, wash and rub fastness concerns, which deals with reducing agents again let it peel off. Regarding the dyeing possible the hair dye according to the invention offers each according to the type and composition of the color components wide range of different color shades. Remarkable is the great color intensity and the color purity of the achievable colorations. Finally, with the help of  described hair dye also a coloring of graying and chemically undamaged hair easily and with very good coverage possible. The colorations obtained are independent of the different structure of the hair, even and very reproducible.

The following examples are intended to counter the invention was explained in more detail.

Examples of hair dyes Example 1

Hair dye in cream form

3.8 g of 2,5-diaminotoluene sulfate
0.6 g 2,6-diaminopyridine
0.8 g resorcinol
0.1 g 5-amino-2-methylphenol
0.3 g sodium sulfite, anhydrous
3.5 g of lauryl alcohol diglycol ether sulfate, sodium salt (28 percent aqueous solution)
15.0 g cetyl alcohol
4.0 g of ammonia, 25 percent aqueous solution
71.9 g water, fully desalinated
100.0 g

50 g of the above hair dye are immediately bar before use with 50 g hydrogen peroxide solution (6%) mixed and applied to bleached hair.  

After an exposure time of 30 minutes at 40 ° C the hair is rinsed with water, shampooed and dried. The hair is colored deep black.

Example 2

Hair dye solution

1.8 g 2,5-diaminotoluene sulfate
0.7 g 2,6-diaminopyridine
0.4 g resorcinol
0.1 g of 5 - ((2'-hydroxyethyl) amino) -2-methylphenol
10.0 g of lauryl alcohol diglycol ether sulfate, sodium salt (28 percent aqueous solution)
10.0 g isopropanol
0.3 g ascorbic acid
10.0 g ammonia, 25 percent aqueous solution
66.7 g water, fully desalinated
100.0 g

50 g of the above hair dye are immediately bar before use with 50 g hydrogen peroxide solution (6%) mixed and applied to bleached hair. After an exposure time of 30 minutes at 40 ° C the hair is rinsed with water, shampooed and dried. The hair is colored brown-black.  

Example 3

Hair dye level

5.0 g of 2,5-diaminotoluene sulfate
1.5 g 2,6-diaminopyridine sulfate (2: 1)
0.2 g 5-amino-2-methylphenol
2.5 g resorcinol
0.3 g ascorbic acid
15.0 g oleic acid
7.0 g isopropanol
9.0 g ammonia, (25 percent aqueous solution)
59.5 g water, fully desalinated
100.0 g

50 g of the above hair dye are immediately bar before use with 50 g hydrogen peroxide solution (6%) mixed and applied to bleached hair. After an exposure time of 30 minutes at 40 ° C the hair is rinsed with water, shampooed and dried. The hair has a deep black color accepted.  

Example 4

Hair dye in cream form

3.8 g of 2,5-diaminotoluene sulfate
0.8 g 2,6-diaminopyridine monohydrochloride
0.1 g 5-amino-2-methylphenol
0.8 g resorcinol
1.2 g 3-aminophenol
0.2 g of 2 - ((2'-hydroxyethyl) amino) -4,6-dinitrophenol
0.3 g sodium sulfite, anhydrous
3.5 g of lauryl alcohol diglycol ether sulfate, sodium salt (28 percent aqueous solution)
15.0 g cetyl alcohol
4.0 g of ammonia, 25 percent aqueous solution
70.3 g of water, fully desalinated
100.0 g

50 g of the above hair dye are immediately bar before use with 50 g hydrogen peroxide solution (6%) mixed and applied to bleached hair. After an exposure time of 30 minutes at 40 ° C the hair is rinsed with water, shampooed and dried. The hair is colored dark brown.  

Example 5

Hair dye solution

1.8 g 2,5-diaminotoluene sulfate
0.7 g 2,6-diaminopyridine
0.4 g resorcinol
0.1 g of 5 - ((3'-hydroxyethyl) amino) -2-methylphenol
10.0 g of lauryl alcohol diglycol ether sulfate, sodium salt (28 percent aqueous solution)
10.0 g isopropanol
0.3 g ascorbic acid
10.0 g ammonia, 25 percent aqueous solution
66.7 g water, fully desalinated
100.0 g

50 g of the above hair dye are immediately bar before use with 50 g hydrogen peroxide solution (6%) mixed and applied to bleached hair. After an exposure time of 30 minutes at 40 ° C the hair is rinsed with water, shampooed and dried. The hair is colored blue-black.  

Example 6

Hair dye level

1.20 g of 2,5-diaminotoluene sulfate
0.02 g 2,6-diaminopyridine
0.01 g of 5-amino-2-methylphenol
0.08 g of 3-aminophenol
0.04 g picramic acid
0.40 g resorcinol
0.30 g sodium sulfite
15.00 g oleic acid
7.00 g isopropanol
9.00 g ammonia, 25 percent aqueous solution
66.95 g water, fully desalinated
100.0 g

50 g of the above hair dye are immediately bar before use with 50 g hydrogen peroxide solution (6%) mixed and applied to bleached hair. After an exposure time of 30 minutes at 40 ° C the hair is rinsed with water, shampooed and dried. The hair is a medium blonde ash color colored.  

Example 7

Hair dye level

6.0 g of 2,5-diaminotoluene sulfate
0.8 g 2,6-diaminopyridine
0.3 g of 5-amino-4-chloro-2-methylphenol
2.5 g resorcinol
0.3 g ascorbic acid
15.0 g oleic acid
7.0 g isopropanol
9.0 g ammonia, 25 percent aqueous solution
59.1 g water, fully desalinated
100.0 g

50 g of the above hair dye are immediately bar before use with 50 g hydrogen peroxide solution (6%) mixed and applied to bleached hair. After an exposure time of 30 minutes at 40 ° C the hair is rinsed with water, shampooed and dried. The hair has a deep black color accepted.  

Example 8

Hair dye in cream form

3.8 g of 2,5-diaminotoluene sulfate
0.8 g 2,6-diaminopyridine monohydrochloride
0.1 g 5-amino-4-fluoro-2-methylphenol
0.8 g resorcinol
1.2 g 3-aminophenol
0.2 g of 2 - ((2'-hydroxyethyl) amino) -4,6-dinitrophenol
0.3 g sodium sulfite, anhydrous
3.5 g of lauryl alcohol diglycol ether sulfate, sodium salt (28 percent aqueous solution)
15.0 g cetyl alcohol
4.0 g of ammonia, 25 percent aqueous solution
70.3 g of water, fully desalinated
100.0 g

50 g of the above hair dye are immediately bar before use with 50 g hydrogen peroxide solution (6%) mixed and applied to bleached hair. After an exposure time of 30 minutes at 40 ° C the hair is rinsed with water, shampooed and ge dries. The hair is colored dark brown.

Manufacturing examples Example 9 Preparation of 2,6-diaminopyridine Hemisulfate

19.0 g (0.17 mol) of 2,6-diaminopyridine, which was distilled through lation has been cleaned at 150 ° C / 0.05 mbar, are dissolved in 250 ml of ethanol, the solution is filtered and cooled to 0 ° C.  

10 ml of concentrated sulfur are added to this solution acid added dropwise. The failed white precipitate is suctioned off, washed with ethanol and in Desiccator dried over calcium chloride.

There are 22.0 g (0.14 mol) of a light gray product obtained that decomposes at 274 ° C.

CHNS microanalysis: C₅H₈N₃O₂S _{₀, ₅}

calc .: C 37.97, H 5.10, N 26.57, S 10.13%;
Found: C 37.96, H 5.23, N 26.65, S 10.09%.

Example 10 Preparation of 5 - ((3′-hydroxypropyl) - amino) -2-methylphenol Step 1

N- (3-hydroxy-4-methylphenyl) carbamic acid (3-chloropropyl) ester

13.8 g (0.6 mol) 5-amino-2-methylphenol, 100.1 g (0.33 Mol) calcium carbonate and 300 ml of dioxane are added heated to 90 ° C in a stream of nitrogen. To this Mix 103.6 g (0.66 mol) over an hour Chloroformic acid (3-chloropropyl) ester added dropwise. The Mix is then left on for another three hours Heated to 90 ° C. After that, the insoluble parts removed by filtration over diatomaceous earth. The filter cake is washed with 150 ml of warm dioxane. The combined filtrates are poured onto 1.2 l of ice water sen. The product which separates out (143.7 g) becomes Recrystallized 900 ml of toluene.

There are 125.4 g (0.51 mol) of a beige fine crystalline receive a linen product that is between 103 and 105 ° C melts. The yield is 86% of theory.

CHN microanalysis: C₁₁H₁₄ClNO₃

calc .: C 54.28, H 5.79, N 5.74%;
Found: C 54.35, H 5.74, N 5.74%.

Level 2

5 - ((3'-Hydroxypropyl) amino) -2-methylphenol

250 ml of sodium hydroxide solution (4.3 molar) in a Nitrogen atmosphere at 45 ° C 48.8 g (0.2 mol) H- (3-hydroxy-4-methylphenyl) carbamic acid (3-chloro propyl) ester added over thirty minutes. The An Set is again ge at 30 ° C for thirty minutes stirs. Then 300 g of ice are added, and the Mix with 60 ml of concentrated hydrochloric acid set a pH of about 6. The aqueous phase is extracted with diethyl ether (3 × 200 ml). After Drying the diethyl ether extracts over magnesium sul fat, filtration and evaporation of the diethyl ether obtained 15.6 g (0.086 mol) of oily product, which slowly crystallized. The yield is 43 percent of theory.

The solid crude product can be recrystallized from warm water be lized. It forms a beige powder that melts between 72 and 75 ° C.

CHN microanalysis: C₁₀H₁₅NO₂

calc .: C 66.27, H 8.34, N 7.73%;
Found: C 66.32, H 8.73, N 7.48%.

Claims (12)

1. Agent for the oxidative coloring of hair on the basis of a developer substance-coupler substance combination, characterized in that it is used as a developer substance

• A) 2,5-diaminotoluene and as coupler substances
• B) 2,6-diaminopyridine
• C) resorcinol and
• D) one or more of the compounds which are selected from the compound of the general formula (I) wherein R ^{1 represents} one of the radicals H, F, Cl, Br or J and R ^{2 represents} one of the radicals H, C ₁ -C ₄ -hydroxyalkyl or C ₂ -C ₄ -dihydroxyalkyl.

2. Composition according to claim 1, characterized in that in the general formula (I) the methyl radical is para to the NHR ² group and the radical R ^{1 is} para to the OH group. 3. Composition according to claim 1, characterized in that in the general formula (I) the methyl radical is para to the NHR ² group and the rest is ortho to the OH group and the NHR ² group. 4. Agent according to one of claims 1 to 3, characterized in that the radical R ^{1 is} hydrogen. 5. Agent according to one of claims 1 to 4, characterized in that the radical R ^{2 is} hydrogen. 6. Composition according to claim 1, characterized in that the compounds of general formula (I) are selected from
5-amino-2-methylphenol
5 - ((2'-Hydroxyethyl) amino) -2-methylphenol
5 - ((3'-Hydroxypropyl) amino) -2-methylphenol
5-amino-4-chloro-2-methylphenol
5-amino-4-fluoro-2-methylphenol and
3-amino-2-chloro-6-methylphenol. 7. Composition according to claim 1, characterized in that the compound of general formula (I) is selected from
5-amino-2-methylphenol
5 - ((2'-Hydroxyethyl) amino) -2-methylphenol and
5 - ((3'-Hydroxyethyl) amino) -2-methylphenol. 8. Composition according to claim 1, characterized in that the compound of general formula (I) 5-amino-2-methylphenol. 9. Composition according to one of claims 1 to 8, characterized characterized in that there is additionally at least one of the developer substances consisting of the group from 1,4-diaminobenzene, 2- (2 ′, 5′-diaminophenyl) ethanol, 4-aminophenol and 4-amino-3-methylphenol contains. 10. Agent according to one of claims 1 to 9, characterized characterized in that there is additionally at least one the coupler substances from the group consisting from 4-chlororesorcinol, 3-aminophenol, 5-hydroxy-1,3- benzodioxole, 5-amino-1,3-benzodioxole and 5 - ((2′- Hydroxyethyl) amino) -1,3-benzodioxole, contains. 11. Agent according to one of claims 1 to 10, characterized characterized in that there is additionally at least one the self-coupling pre-colors the group consisting of 2-amino-5-methylphenol, 2-amino-6-methylphenol and 2-amino-5-ethoxyphenol, contains. 12. Composition according to one of claims 1 to 11, characterized characterized in that there is additionally at least one the direct dyes from the group consisting of Diamond Fuchs in (C.I. 42 510), Basic Blue 26 (C.I. 44 045), picramic acid, 2 - ((2′-Hy droxyethyl) amino) -4,6-dinitrophenol, 4 - ((2′-Hy droxyethyl) amino) -2-nitroaniline, Acid Brown 4 (C.Z. 14 805), Acid Blue 135 (C.I. 13 385), Dis perse Violet 4 (C.I. 61 105), Disperse Red 15 (C.I. 60 710) and Disperse Violet 1 (C.I. 61 100), contains.