WO2001089587A2

WO2001089587A2 - Agents for dyeing fibres containing keratin

Info

Publication number: WO2001089587A2
Application number: PCT/EP2001/005339
Authority: WO
Inventors: Hinrich Möller; Doris Oberkobusch; Horst Höffkes
Original assignee: Henkel Kommanditgesellschaft Auf Aktien
Priority date: 2000-05-19
Filing date: 2001-05-10
Publication date: 2001-11-29
Also published as: DE10024886A1; AU6742201A; WO2001089587A3

Abstract

The invention relates to agents for dyeing fibres containing keratin, especially human hair, containing at least one nitrosopyridine and/or -pyrimidine of formula (I), wherein Q means a nitrogen atom or the group CR?4 and R1, R2, R3 and R4¿, which can be the same or different, mean hydrogen, halogen, a C¿1?-C4-alkyl group, C1-C4-alkoxygroup, C1-C4-hydroxyalkyl group or C1-C4-hydroxyalkoxy group, a hydroxy group, a mercapto group, a sulfo group, a carboxy group or an amino group which can be substituted by C1-C4-alkyl-, C1-C4-hydroxyalkyl- or C1-C4-acryl groups. Two of the radicals can also form a fused aromatic or heteroaromatic ring.

Description

"Means for dyeing fibers containing keratin"

The invention relates to an agent for dyeing keratin-containing fibers, in particular human hair, which contains nitrosopyridines and / or pyrimidines, the use of these compounds in agents for dyeing keratin-containing fibers and a process for dyeing keratin-containing fibers, in particular human hair.

For dyeing keratin fibers, e.g. B. hair, wool or fur, generally either direct dyes or oxidation dyes, which are formed by oxidative coupling of one or more developer components with one another or with one or more coupler components, are used. Coupler and developer components are also referred to as oxidation dye precursors.

Primary aromatic amines with a further free or substituted hydroxy or amino group in the para or ortho position, diaminopyridine derivatives, heterocyclic hydrazones, 4-aminopyrazolone derivatives and 2,4,5,6-tetraaminopyrimidine and derivatives thereof are usually used as developer components used.

Special representatives are, for example, p-phenylenediamine, p-toluyienediamine, 2,4,5, 6-tetraaminopyrimidine, p-aminophenol, N, N-bis- (2-hydroxyethyl) -p-phenylenediamine, 2- (2.5 Diaminophenyl) ethanol, 2- (2,5-diaminophenoxy) ethanol, 1-phenyl-3-carboxyamido-4-amino-pyrazolon-5, 4-amino-3-methylphenol, 2-aminomethyl-4-aminophenol, 2-hydroxymethyl-4-aminophenol, 2-hydroxy-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine and 2,5,6-triamino-4-hydroxypyrimidine.

M-Phenylenediamine derivatives, naphthols, resorcinol and resorcinol derivatives, pyrazolones, m-aminophenols and substituted pyridine derivatives are generally used as coupler components. Particularly suitable coupler substances are α-naphthol, 1, 5-, 2,7- and 1, 7-dihydroxynaphthalene, 5-amino-2-methylphenol, m-aminophenol, resorcinol, resorcinol monomethyl ether, p-phenylenediamine, 2,4-diaminophenoxyethanol , 2-Amino-4- (2-hydroxyethylamino) anisole (Lehmanns Blau), 1-phenyl-3-methyl-pyrazolon-5, 2,4-di-chloro-3-aminophenol, 1,3-bis- ( 2,4-diaminophenoxy) propane, 2-chlororesorcinol, 4-chloro- sorcinol, 2-chloro-6-methyl-3-aminophenol, 2-methylresorcinol, 5-methylresorcinol, 3-amino-6-methoxy-2-methylamino-pyridine and 3,5-diamino-2,6-dimethoxypyridine.

With regard to further customary dye components, reference is expressly made to the “Dermatology” series, edited by Ch. Culnan, H. Maibach, publisher Marcel Dekker Inc., New York, Basel, 1986, vol. 7, Ch. Zviak, The Science of Hair Care, chap. 7, pages 248 - 250 (direct dyes), and chap. 8, pages 264 - 267 (oxidation dyes), as well as the "European Inventory of Cosmetic Raw Materials", 1996, published by the European Commission, available in disk form from the Federal Association of German Industrial and Commercial Enterprises for Medicines, Health Care Products and Personal Care Products, Mannheim ,

With oxidation dyes intensive dyeings with good fastness properties can be achieved, but the development of the color is usually done under the influence of oxidizing agents such. B. H ₂ O ₂ , which in some cases can damage the fiber. Furthermore, some oxidation dye precursors or certain mixtures of oxidation dye precursors can sometimes have a sensitizing effect on people with sensitive skin. Direct dyes are applied under gentler conditions, but their disadvantage is that the dyeings often have inadequate fastness properties.

The use of the nitrosopyridines or pyrimidines described in more detail below for dyeing keratin-containing fibers has hitherto not been known.

The object of the present invention is to provide colorants for keratin fibers, in particular human hair, which are qualitatively at least equivalent to the usual oxidation hair colorants in terms of color depth, gray coverage and fastness properties, but without necessarily relying on oxidizing agents such as e.g. B. H ₂ O _{2 to be} instructed. In addition, the colorants may have no or only a very low sensitization potential.

Surprisingly, it has now been found that the nitrosopyridines or pyrimidines shown in the formula I are outstandingly suitable for dyeing keratin-containing fibers even in the absence of oxidizing agents. They give color with excellent brilliance and depth of color and lead to diverse color nuances. However, the use of oxidizing agents should not be excluded in principle.

The invention relates to an agent for dyeing keratin-containing fibers, in particular human hair, containing at least one nitrosopyridine and / or pyrimidine of the formula I,

R1 (I)

in the mean

Q is a nitrogen atom or the group CR ⁴ and

R ¹ , R ² , R ³ and R ⁴ , which may be the same or different, are hydrogen, halogen, one

C _r C ₄ alkyl group, CrCj alkoxy group, CrC hydroxyalkyl group or C _r C ₄ -

Hydroxyalkoxy group, a hydroxy group, a mercapto group, a sulfo group, a carboxy group or an amino group, which can be replaced by CrC-alkyl, C _r C ₄ -

Hydroxyalkyl or Ci-d-acyl groups can be substituted, with two of the radicals together being a fused aromatic or heteroaromatic

Can form a ring.

Keratin-containing fibers are wool, furs, feathers and in particular human hair. In principle, however, the colorants according to the invention can also be used for dyeing other natural fibers, such as, for. As cotton, jute, sisal, linen or silk, modified natural fibers, such as. B. regenerated cellulose, nitro, alkyl or hydroxyalkyl or acetyl cellulose and synthetic fibers such as. B. polyamide, polyacrylonitrile, polyurethane and polyester fibers can be used.

The compounds with the formula I are largely known from the literature, are commercially available or can be prepared by known synthetic processes. The compounds of the formula I are preferably selected from 2,6-diamino-3-nitrosopyridine, 2,4,6-triacetamido-3-nitrosopyridine, 5-nitroso-2,4,6-triaminopyrimidine, 6-amino- 4-hydroxy-2-mercapto-5-nitrosopyrimidine, 6-amino-2,4-dihydroxy-5-nitrosopyrimidine, 4,6-diamino-5-nitroso-2-thiopyrimidine, 2-amino-4,6- diacetamido-5-nitrosopyrimidine, 2,4-diamino-6-hydroxy-5-nitrosopyrimidine, 4-amino-6-hydroxy-2-mercapto-5-nitrosopyrimidine, 2-amino-4,6-dihydroxy-5- nitrosopyrirnidine, 4,6-diamino-2-hydroxy-5-nitrosopyrimidine, 4-hydroxy-2-dimethylamino-5-nitroso-6-aminopyrimidine, 4-amino-6-hydroxy-2-methyl-5-nitrosopyrimidine, 4,6-dihydroxy-2-mercapto-5-nitrosopyrimidine, 4-amino-6-hydroxy-2-methyl-5-nitrosopyrimidine and any mixtures thereof.

Of course, the teaching according to the invention also includes those compounds which are tautomeric forms of the abovementioned compounds. As an example, the 6-amino-5-nitroso-2-thiouracil may be mentioned as a tautomeric form of 6-amino-4-hydroxy-2-mercapto-5-nitrosopyrimidine.

The above-mentioned nitrosopyridines and / or pyrimidines with the formula 1 are preferably used in the agents according to the invention in an amount of 0.03 to 65 mmol, in particular from 1 to 40 mmol, based on 100 g of the total colorant. They can be used as substantive colorants or in the presence of customary oxidation dye precursors.

Coloring agents which contain nitrosopyridines and / or pyrimidines alone as the coloring component are preferably used for lighter colors. Colorings with even greater brilliance and improved fastness properties (light fastness, wash fastness, rub fastness) over a wide range of shades from yellowish brown to light brown, medium gray, violet red to black are achieved if the compounds of formula I used according to the invention together with at least one further component ( hereinafter referred to as component B), selected from compounds having a primary or secondary amino group or hydroxy group, selected from primary or secondary aromatic amines, nitrogen-containing heterocyclic compounds and aromatic hydroxy compounds, amino acids, oligopeptides and / or CH-active compounds composed of 2 to 9 amino acids, be used. On the one hand, these are compounds which, on their own, only weakly dye keratin-containing fibers and only brilliant together with the compounds of the formula I. Colorings result. On the other hand, there are also compounds that are already used as oxidation dye precursors.

Several different nitrosopyridines and / or pyrimidines of the formula I can also be used together in all the colorants; Likewise, several different compounds of component B can also be used together.

The embodiment described above also includes the use of such substances which are reaction products of nitrosopyridines and / or pyrimidines with the compounds of component B mentioned as direct colorants. Such reaction products can e.g. B. be obtained by briefly heating the two components in stoichiometric amounts in an aqueous neutral to weakly alkaline medium, they either precipitate out of the solution as a solid or are isolated therefrom by evaporation of the solution. The reaction products can also be used in combination with other dyes or dye precursors.

Suitable compounds with primary or secondary amino group as component B are e.g. B. primary aromatic amines such as N, N-dimethyl, N, N-diethyl, N- (2-hydroxyethyl) -N-ethyl, N, N-bis (2-hydroxyethyl) -, N- (2-methoxyethyl-), 2,3-, 2,4-, 2,5-dichloro-p-phenylenediamine, 2-chloro-p-phenylenediamine, 2,5-dihydroxy-4-morpholinoaniline dihydrobromide, 2 -, 3-, 4-aminophenol, 2-aminomethyl-4-aminophenol, 2-hydroxymethyl-4-aminophenol, o-, p-phenylenediamine, o-toluenediamine, 2,5-diaminotoluene, -phenol, - phenethole, 4- Amino-3-methylphenol, 2- (2,5-diaminophenyl) -ethanol, 2,4-diaminophen-oxyethanol, 2- (2,5-diaminophenoxy) -ethanol, 4-methylamino-, 3-amino-4- ( 2'-hydroxyethyloxy) -, 3,4-methylenediamino-, 3,4-methylenedioxyaniline, 3-amino-2,4-dichloro-, 4-methylamino-, 2-methyl-5-amino-, 3rd -Methyl-4-amino-, 2-methyl-5- (2-hydroxyethylamino) -, 6-methyl-3-amino-2-chloro, 2-methyl-5-amino-4-chloro, 3,4 -Methylene dioxy-, 5- (2-hydroxyethylamino) -4-methoxy-2-methyl-, 4-amino-2-hydroxymethylphenol, 1, 3-diamino-2,4-dimethoxybenzene, 2-, 3- , 4-aminobenzoic acid, phenylacetic acid, 2,3-, 2, 4-, 2,5-, 3,4-, 3,5-diaminobenzoic acid, 4-, 5-aminosalicylic acid, 3-amino-4-hydroxy-, 4-amino-3-hydroxy-benzoic acid, 2-, 3-, 4-aminobenzenesulfonic acid, 3-amino-4-hydroxybenzenesulfonic acid, 4-amino-3-hydroxynaphthalene-1-sulfonic acid, 6-amino-7-hydroxynaphthalene-2-sulfonic acid, 7-amino-4-hydroxynaphthalene -2-sulfonic acid, 4-amino-5-hydroxynaphthalene 2,7-disulfonic acid, 3-amino-2-naphthoic acid, 3-aminophthalic acid, 5-aminoisophthalic acid, 1,3,5-, 1,2,4-triaminobenzene, 1,2,4,5-tetraaminobenzene, 2 , 4,5-Triaminophenol, Pentaaminobenzol, Hexaaminobenzol, 2,4,6-Triaminoresorcin, 4,5-Diaminobrenzcatechin, 4,6-Diaminopyrogallol, 3,5-Diamino-4-hydroxybrenzcatechin, aromatic nitriles, nitro group containing amino compounds such as 3-amino-6-methylamino-2-nitro-pyridine, picraminic acid, 1 - (2 (3) -nitro-4-amino) -phenylazo-2-hydroxy-7-trimethylammoniumnaphthalene chloride, 1-hydroxy-2 -amino-4,6-dinitro-benzene, 1-amino-2-nitro-4-bis (2-hydroxyethyl) -amino-benzene, 1-amino-2- (2-hydroxyethyl) amino-5-nitro - benzene (HC Yellow No. 5), 1-amino-2-nitro-4- (2-hydroxyethyl) aminobenzene (HC Red No. 7), 2-chloro-5-nitro-N-hydroxyethyl-1,4 -phenylenediamine, 1- (2-hydroxyethyl) amino-2-nitro-4-amino-benzene (HC Red No. 3), 4-amino-3-nitrophenol, 4-amino-2-nitrophenol, 6-nitro- o-toluidine, 1-amino-3-methyl-4- (2-hydroxyethyl) amino-6-nitrobenzene (HC Violet No. 1 ), 1-Amino-2-nitro-4- (2,3-dihydroxypropyl) amino-5-chlorobenzene an (HC Red No. 10), 4-Amino-2-nitrodiphenylamino-2'-carboxylic acid (2nd - (4-amino-2-nitroanilino) -benzoic acid), 6-nitro-2,5-diaminopyridine, 2-amino-6-chloro-4-nitrophenol, 2-amino-6-chloro-4-nitrophenol, 1-amino-2- (3-nitrophenylazo) -7-phenylazo-8-naphthol-3,6-disulfonic acid, disodium salt (Acid blue No. 29), 1-amino-2- (2-hydroxy-4-nitrophenylazo) - 8-naphthol-3,6-disulfonic acid, disodium salt (Palatinchrome green), 1-amino-2- (3-chloro-2-hydroxy-5-nitrophenylazo) -8-naphthol-3,6-disulfonic acid, disodium salt (gallion ), 4-amino-4'-nitrostilbene-2,2'-disulfonic acid, disodium salt, 2,4-diamino-3 ', 5'-dinitro-2'-hydroxy-5-methyl-azobenzene (Mordant brown 4), 4'-amino-4-nitrodiphenylamine-2-sulfonic acid, 4'-amino-3'-nitrobenzophenone-2-carboxylic acid, 1-amino-4-nitro-2- (2-nitrobenzylideneamino) benzene, 2- [2- (Diethylamino) ethylamino] -5-nitroaniline, 3-amino-4-hydroxy-5-nitrobenzenesulfonic acid, (hydrate), 3-amino-3'-nitrobiphenyl, 3-A mino-4-nitro-acenaphthene, 2-amino-1-nitronaphthalene, 5-amino-6-nitrobenzo-1,3-dioxole, anilines, especially anilines containing nitro groups, such as 4-nitroaniline, 2-nitroaniline, 1, 4 -Diamino-2-nitrobenzene, 1, 2-diamino-4-nitrobenzene, 1-amino-2-methyl-6-nitrobenzene, 4-nitro-1,3-phenylenediamine, 2-nitro-4-amino-1 - ( 2-hydroxyethylamino) benzene, 2-nitro-1-amino-4- [bis- (2-hydroxyethyl) amino] benzene, 4-amino-2-nitrodiphenylamine-2'-carboxylic acid, 2-amino-6- chloro-4-nitrophenol, 1-amino-5-chloro-4- (2-hydroxyethylamino) -2-nitrobenzene, aromatic anilines or phenols with a further aromatic radical, as shown in formula II

in the R ⁵ for a hydroxy or an amino group which can be substituted by C _1-4 alkyl, C _1-4 hydroxyalkyl, C _1-4 alkoxy or C _1-4 alkoxy C _1-4 - alkyl groups can be substituted,

R ⁶ , R ⁷ , R ⁸ , R ⁹ and R ^{10 represent} hydrogen, a hydroxyl or an amino group,

C _1-4 alkyl, C _1-4 hydroxyalkyl, C _1-4 alkoxy, C _M aminoalkyl or C ^ alkoxy-C ^ alkyl groups may be substituted, and

P for a direct bond, a saturated or unsaturated carbon chain with 1 to 4 carbon atoms, optionally substituted by hydroxyl groups, a carbonyl, sulfonyl or imino group, an oxygen or sulfur atom, or a group with the formula

III

Z- (CH ₂ -Y-CH ₂ -Z ') ₀ (III)

in which Y is a direct bond, a CH ₂ or CHOH group,

Z and Z 'independently of one another for an oxygen atom, an NR ¹¹ group, in which R ^{11 is} hydrogen, a C _1-4 -alkyl or a hydroxy-C _1- -alkyl group, the group O- (CH ₂ ) _p - NH or NH- (CH ₂ ) _p '-O, where p and p' are 2 or 3, and o is a number from 1 to 4, such as 4,4'-diaminostilbene and its hydrochloride, 4,4 '-Diaminostilbene-2,2'-disulfonic acid mono- or -di-Na salt, 4-amino-4'-dimethylaminostilbene and its hydrochloride, 4,4'-diaminodiphenylmethane, -sulfide, -sulfoxide, -amine, 4, 4'-diaminodiphenylamine-2-sulfonic acid, 4,4'-diaminobenzophenone, diphenyl ether, 3,3 ', 4,4'-tetraaminodiphenyl, 3,3', 4,4'-tetraamino-benzophenone, 1 , 3-bis (2,4-diaminophenoxy) propane, 1,8-bis (2,5-diaminophenoxy) -3,6-dioxaoctane, 1,3-bis (4-aminophenylamino) propane, -2 -propanol, 1,3-bis- [N- (4-aminophenyl) -2-hydroxyethylamino] -2-propanol, N, N-bis- [2- (4-aminophenoxy) ethyl] methylamine, N -Phenyl-1,4-phenylenediamine. The abovementioned compounds can be used both in free form and in the form of their physiologically tolerable salts, in particular as salts of inorganic acids, such as hydrochloric or sulfuric acid.

Suitable nitrogen-containing heterocyclic compounds are e.g. B. 2-, 3-, 4-amino, 2-amino-3-hydroxy, 2,6-diamino, 2,5-diamino, 2,3-diamino, 2-dimethylamino-5-amino -, 2-methylamino-3-amino-6-methoxy-, 2,3-diamino-6-methoxy-, 2,6-dimethoxy-3,5-diamine-, 2,4,5-triamino-, 2,6-dihydroxy-3,4-dimethylpyridine, 2,4-dihydroxy-5,6-diamino, 4,5,6-triamino, 4-hydroxy-2,5,6-triamino, 2-hydroxy -4,5,6-triamino-, 2,4,5,6-tetraamino-, 2-methylamino-4,5,6-triamino-, 2,4-, 4,5-diamino-, 2- Amino-4-methoxy-6-methyl-pyrimidine, 3,5-diaminopyrazole, -1, 2,4-triazole, 3-amino, 3-amino-5-hydroxypyrazole, 2-, 3-, 8- Aminoquinoline, 4-aminoquininaldine, 2-, 6-aminonicotinic acid, 5-aminoisoquinoline, 5-, 6-aminoindazole, 5-, 7-aminobenzimidazole, benzothiazole, 2,5-dihydroxy-4-morpholinoaniline and indole and indoline derivatives, such as 4-, 5-, 6-, 7-aminoindole, 5,6-dihydroxyindole, 5,6-dihydroxyindoline and 4-hydroxyindoline. According to the invention, the hydroxypyrimidines disclosed in DE-U1-299 08 573 can also be used as heterocyclic compounds. The aforementioned compounds can be used both in free form and in the form of their physiologically tolerable salts, e.g. B. as salts of inorganic acids such as hydrochloric or sulfuric acid.

Suitable aromatic hydroxy compounds are e.g. B. 2-, 4-, 5-methylresorcinol, 2,5-dimethylresorcinol, resorcinol, 3-methoxyphenol, pyrocatechol, hydroquinone, pyrogallol, phloroglucin, hydroxyhydroquinone, 2-, 3-, 4-methoxy-, 3-dimethylamino -, 2- (2-hydroxyethyl) -, 3,4-methylenedioxyphenol, 2,4-, 3,4-dihydroxybenzoic acid, -phenylacetic acid, gallic acid, 2,4,6-trihydroxybenzoic acid, -acetophenone, 2-, 4 -Chlorresorcin, 1-naphthol, 1, 5-, 2,3-, 2,7-dihydroxynaphthalene, 6-dimethylamino-4-hydroxy-2-naphthalenesulfonic acid, 3,6-dihydroxy-2,7-naphthalenesulfonic acid ,

Preferred amino acids are all naturally occurring and synthetic α-amino acids, for example the amino acids accessible by hydrolysis from vegetable or animal proteins, for example collagen, keratin, casein, elastin, soy protein, wheat gluten or almond protein. Both acidic and alkaline amino acids can be used. Preferred amino acids are arginine, histidine, tyrosine, phenylalanine, DOPA (dihydroxyphenylalanine), ornithine, lysine and tryptophan. However, other amino acids, such as 6-aminocaproic acid, can also be used.

The oligopeptides can be naturally occurring or synthetic oligopeptides, but also the oligopeptides contained in polypeptide or protein hydrolyzates, provided that they have sufficient water solubility for use in the colorants according to the invention. Examples are e.g. Glutathione or the oligopeptides contained in the hydrolyzates of collagen, keratin, casein, elastin, soy protein, wheat gluten or almond protein. Use together with compounds having a primary or secondary amino group or with aromatic hydroxy compounds is preferred.

Examples of CH-active compounds which may be mentioned are 1, 2,3,3-tetramethyl-3H-indolium iodide, 1, 2,3,3-tetramethyl-3H-indolium-p-toluenesulfonate, 1, 2,3,3-tetramethyl - 3H-indolium methanesulfonate, Fischer's base (1,3,3-trimethyl-2-methyleneindoline), 2,3-dimethyl-benzothiazolium iodide, 2,3-dimethyl-benzothiazolium-p-toluenesulfonate, 1,2-dimethyl -naphtho [1,2-d] thiazolium p-toluenesulfonate, 1-ethyl-2-methyl-naphtho [1,2-d] thiazo! ium-p-toluenesulfonate, rhodanine, rhodanine-3-acetic acid, 1-methyl -2-quinaldinium iodide, 1-ethyl-2-quinaldinium iodide, 1, 4-dimethylquinolinium iodide, barbituric acid, thiobarbituric acid, 1, 3-dimethylthiobarbituric acid, 1, 3-diethylthiobarbituric acid, diethylthiobindituric acid , 3-indoxy acetate, coumaranone, 1-methyl-3-phenyl-2-pyrazolinone, indan-1, 3-dione, indan-1-one and 1-dicyanomethylene indane.

The compounds of component B are particularly preferably selected from the group consisting of N- (2-hydroxyethyl) -N-ethyl-, 2-chloro-p-phenylenediamine, N, N-bis- (2-hydroxyethyl) -p-phenylenediamine , 4-aminophenol, p-phenylenediamine, 2- (2,5-diaminophenyl) ethanol, 2,5-diaminotoluene, 3,4-methylenedioxyaniline, 2-amino-4- (2-hydroxyethylamino) anisole , 2- (2,4-diaminophenoxy) ethanol, 3-amino-2,4-dichloro, 2-methyl-5-amino, 3-methyl-4-amino, 2-methyl-5- (2nd -hydroxyethylamino) -, 2-methyl-5-amino-4-chloro, 6-methyl-3-amino-2-chloro, 2-aminomethyl-4-aminophenol, 2-diethylaminomethyl-4-aminophenol , 2-dimethylaminomethyl-4-aminophenol, 2,6-dichloro-4-aminophenol, 2-hydroxymethyl-4-aminophenol, 3,4-methylenedioxyphenol, 3,4-diaminobenzoic acid, 2,5-diamino-, 2-dimethylamino-5-amino-, 3-amino-2-methylamino-6-methoxy-, 2,3-diamino-6-methoxy-, 3,5-diamino-2,6-dimethoxy-, 2, 6-dihydroxy-3,4-dimethylpyridine, 2-hydroxy-4,5,6- triamino, 4-hydroxy-2,5,6-triamino, 2,4,5,6-tetraamino, 2-methylamino-4,5,6-triamino-pyrimidine, 3,5-diaminopyrazole, 3-amino -5-hydroxypyrazole, 5,6-dihydroxyindole and 5,6-dihydroxyindoline, ß-alanine, L-proline, L-lysine, DL-tyrosine and their physiologically compatible salts formed with preferably inorganic acids.

The above-mentioned compounds of component B can be used in an amount of 0.03 to 65, in particular 1 to 40 mmol, in each case based on 100 g of the total colorant. Furthermore, it can be particularly preferred according to the invention to use the compound of formula I and the compound of component B in a molar ratio of 2: 1 to 1: 2, in particular approximately equimolar. When using compounds of component B which contain one or more amino groups, the compounds of formula I on the one hand and the compounds of component B on the other hand are preferably used in proportions such that the sum of the number of nitroso groups of the compounds of formula I and the sum the number of amino groups of the compounds of component B in a ratio of 2: 1 to 1: 2.

In order to obtain further and more intense colorations, the agents according to the invention can additionally contain color enhancers. The color enhancers are preferably selected from the group consisting of piperidine, piperidine-2-carboxylic acid, piperidine-3-carboxylic acid, piperidine-4-carboxylic acid, pyridine, 2-hydroxypyridine, 3-hydroxypyridine, 4-hydroxypyridine, imidazole, 1-methylimidazole, Histidine, pyrrolidine, proline, pyrrolidone, pyrrolidone-5-carboxylic acid, pyrazole, 1,2,4-triazole, piperazidine, their derivatives and their physiologically tolerable salts.

The aforementioned color enhancers can be used in an amount of 0.03 to 65, in particular 1 to 40 mmol, in each case based on 100 g of the entire colorant.

On the presence of oxidizing agents, e.g. B. H ₂ O ₂ , can be omitted. However, it can It may be desirable to add hydrogen peroxide or other oxidizing agents to the agents according to the invention to achieve the shades which are lighter than the keratin-containing fiber to be colored. Oxidizing agents are usually in one Amount of 0.01 to 6 wt .-%, based on the application solution. A preferred oxidizing agent for human hair is H ₂ O ₂ .

In a preferred embodiment, the colorants according to the invention contain, in addition to the compounds according to the invention, customary direct dyes, for example, for further modification of the color shades. B. from the group of nitrophenylenediamines, nitroaminophenols, anthraquinones or indophenols, such as. B. under the international names or trade names HC Yellow 2, HC Yellow 4, HC Yellow 6, Basic Yellow 57, Disperse Orange 3, HC Red 3, HC Red BN, Basic Red 76, HC Blue 2, Disperse Blue 3, Basic Blue 99, HC Violet 1, Disperse Violet 1, Disperse Violet 4, Disperse Black 9, Basic Brown 16 and Basic Brown 17 known compounds as well as picramic acid 2-amino-6-chloro-4-nitrophenol, 4-amino-2-nitrodiphenylamine -2'-carboxylic acid, 6-nitro-1, 2,3,4-tetrahydroquinoxaline, 4-N-ethyl-1, 4-bis- (2'-hydroxyethylamino) -2-nitrobenzene hydrochloride and 1-methyl -3-nitro-4- (2'-hydroxyethyl) aminobenzene. The agents according to the invention according to this embodiment preferably contain the substantive dyes in an amount of 0.01 to 20% by weight, based on the total colorant.

Furthermore, the preparations according to the invention can also contain naturally occurring dyes such as, for example, henna red, henna neutral, henna black, chamomile flowers, sandalwood, black tea, sapwood, sage, blue wood, madder root, catechu, sedre and alkanna root.

It is not necessary that the oxidation dye precursors or the optional direct dyes each represent uniform compounds. Rather, in the colorants according to the invention, due to the production process for the individual dyes, further components may be present in minor amounts, provided that these do not adversely affect the coloring result or for other reasons, e.g. B. toxicological, must be excluded.

The colorants according to the invention produce intensive colorations even at physiologically tolerable temperatures of below 45 ° C. They are therefore particularly suitable for dyeing human hair. For use on human hair the colorants can usually be incorporated into a water-containing cosmetic carrier. Suitable water-containing cosmetic carriers are e.g. B. creams, emulsions, gels or surfactant-containing foaming solutions such. B. shampoos or other preparations that are suitable for use on the keratin fibers. If necessary, it is also possible to incorporate the colorants into anhydrous carriers.

Furthermore, the colorants according to the invention can contain all active ingredients, additives and auxiliaries known in such preparations. In many cases, the colorants contain at least one surfactant, both anionic and zwitterionic, ampholytic, nonionic and cationic surfactants being suitable in principle. In many cases, however, it has proven advantageous to select the surfactants from anionic, zwitterionic or nonionic surfactants.

Suitable anionic surfactants in preparations according to the invention are all anionic surface-active substances suitable for use on the human body. These are characterized by a water-solubilizing, anionic group such as. B. a carboxylate, sulfate, sulfonate or phosphate group and a lipophilic alkyl group with about 10 to 22 carbon atoms. In addition, the molecule can contain glycol or polyglycol ether groups, ester, ether and amide groups and hydroxyl groups. Examples of suitable anionic surfactants are, in each case in the form of the sodium, potassium and ammonium as well as the mono-, di- and trialkanolammonium salts with 2 or 3 carbon atoms in the alkanol group,

linear fatty acids with 10 to 22 carbon atoms (soaps),

Ether carboxylic acids of the formula RO- (CH ₂ -CH ₂ O) _x -CH ₂ -COOH, in which R is a linear alkyl group with 10 to 22 C atoms and x = 0 or 1 to 16, acyl sarcosides with 10 to 18 C- Atoms in the acyl group, acyl taurides with 10 to 18 C atoms in the acyl group, acyl isethionates with 10 to 18 C atoms in the acyl group,

Sulfosuccinic acid mono- and dialkyl esters with 8 to 18 carbon atoms in the alkyl group and sulfosuccinic acid mono-alkyl polyoxyethyl esters with 8 to 18 carbon atoms in the alkyl group and 1 to 6 oxyethyl groups, linear alkanesulfonates with 12 to 18 carbon atoms, linear alpha-olefin sulfonates with 12 to 18 carbon atoms, methyl alpha-sulfofatty acid esters of fatty acids with 12 to 18 carbon atoms, alkyl sulfates and alkyl polyglycol ether sulfates of the formula RO (CH ₂ -CH ₂ O) _x -SO ₃ H, in which R one is preferred linear alkyl group with 10 to 18 carbon atoms and x = 0 or 1 to 12,

Mixtures of surface-active hydroxysulfonates according to DE-A-37 25 030, sulfated hydroxyalkyl polyethylene and / or hydroxyalkylene propylene glycol ethers according to DE-A-37 23 354,

Sulfonates of unsaturated fatty acids with 12 to 24 carbon atoms and 1 to 6 double bonds according to DE-A-39 26 344,

Esters of tartaric acid and citric acid with alcohols, the addition products of about 2 to 15 molecules of ethylene oxide and / or propylene oxide to fatty alcohols with 8 to 22 carbon atoms.

Preferred anionic surfactants are alkyl sulfates, alkyl polyglycol ether sulfates and ether carboxylic acids with 10 to 18 carbon atoms in the alkyl group and up to 12 glycol ether groups in the molecule, and in particular salts of saturated and in particular unsaturated C ₈ -C ₂₂ carboxylic acids, such as oleic acid, stearic acid, Isostearic acid and palmitic acid.

Zwitterionic surfactants are surface-active compounds that contain at least one quaternary ammonium group and at least one -COO ^ or -SOa ^ group in the molecule. Particularly suitable zwitterionic surfactants are the so-called betaines such as the N-alkyl-NN-dimethylammonium glycinate, for example the coconut alkyl dimethylammonium glycinate, N-acylaminopropyl-N, N-dimethylammonium glycinate, for example the coconut acylamihopropyl dimethylammonium glycinate, and 2-alkyl -3-carboxymethyl-3-hydroxyethyl-imidazolines each having 8 to 18 carbon atoms in the alkyl or acyl group and the cocoacylaminoethylhydroxyethylcarboxymethylglycinate. A preferred zwitterionic surfactant is the fatty acid amide derivative known under the CTFA name Cocamidopropyl Betaine.

Ampholytic surfactants are surface-active compounds which, in addition to a C _8- ι ₈ alkyl or acyl group in the molecule at least one free amino group and at least one -COOH or -SO ₃ H group and the training formation of inner salts are capable. Examples of suitable ampholytic surfactants are N-alkylglycines, N-alkylpropionic acids, N-alkylaminobutyric acids, N-alkyliminodipropionic acids, N-hydroxyethyl-N-alkylamidopropylglycines, N-alkyltaurines, N-alkylsarcosines, 2-alkylaminopropionic acids and alkylaminoacetic acids each with about 8 to 18 carbon atoms in the alkyl group. Particularly preferred ampholytic surfactants are N-cocosalkylaminopropionate, cocoacylaminoethylaminopropionate and C ₁₂ . ₁₈ acyl sarcosine.

Nonionic surfactants contain z as a hydrophilic group. B. a polyol group, a polyalkylene glycol ether group or a combination of polyol and polyglycol ether group. Such connections are, for example

Addition products of 2 to 30 moles of ethylene oxide and / or 0 to 5 moles of propylene oxide with linear fatty alcohols with 8 to 22 carbon atoms, with fatty acids with 12 to 22 carbon atoms.

Atoms and on alkylphenols with 8 to 15 carbon atoms in the alkyl group,

C ₁₂ . ₂₂ fatty acid monoesters and diesters of adducts from 1 to 30 mol

Ethylene oxide on glycerol,

C ₈ . ₂₂ alkyl mono- and oligoglycosides and their ethoxylated analogs,

Addition products of 5 to 60 moles of ethylene oxide with castor oil and hardened

Castor oil,

Addition products of ethylene oxide with sorbitan fatty acid esters

Addition products of ethylene oxide with fatty acid alkanolamides.

Examples of the cationic surfactants which can be used in the hair treatment compositions according to the invention are, in particular, quaternary ammonium compounds. Ammonium halides such as alkyltrimethylammonium chlorides, dialkyldimethylammonium chlorides and trialkylmethylammonium chlorides, for. B. cetyltrimethylammonium chloride, stearyitrimethylammonium chloride, distearyldimethylammonium chloride, lauryldimethylammonium chloride, lauryldimethylbenzylammonium chloride and tricetylmethylammonium chloride. The quaternized protein hydrolyzates are further cationic surfactants which can be used according to the invention.

Also suitable according to the invention are cationic silicone oils such as, for example, the commercially available products Q2-7224 (manufacturer: Dow Corning; a stabilized trimethylsilylamodimethicone), Dow Corning 929 emulsion (containing a hydroxylamino modified silicone, which is also called amodimethicone), SM-2059 (manufacturer: General Electric), SLM-55067 (manufacturer: Wacker) and Abil ^® -Quat 3270 and 3272 (manufacturer: Th. Goldschmidt; diquaternary polydimethylsiloxanes, Quaternium-80 ).

In addition to a good conditioning effect, alkylamidoamines, especially fatty acid amidoamines such as the ^{stearylamidopropyldimethylamine} available under the name Tego Amid ^® S 18, are notable for their good biodegradability.

Also very good biodegradability are quaternary Esterverbindungen, so-called "esterquats", alkyldialkoyloxyalkylammoniummethosulfate such as those sold under the trade name Stepantex® ^® methylhydroxy-.

An example of a suitable cationic surfactant quaternary sugar derivative is the commercial product Glucquat ^® 100, according to CTFA nomenclature a "lauryl methyl Gluceth-10 Hydroxypropyl Di onium chlorides".

The compounds with alkyl groups used as surfactants can each be uniform substances. However, it is generally preferred to start from natural vegetable or animal raw materials in the production of these substances, so that substance mixtures with different alkyl chain lengths depending on the respective raw material are obtained.

In the case of the surfactants, which are addition products of ethylene and / or propylene oxide onto fatty alcohols or derivatives of these addition products, both products with a "normal" homolog distribution and those with a narrowed homolog distribution can be used. “Normal” homolog distribution is understood to mean mixtures of homologues which are obtained as catalysts when fatty alcohol and alkylene oxide are reacted using alkali metals, alkali metal hydroxides or alkali metal alcoholates. In contrast, narrow homolog distributions are obtained if, for example, hydrotalcites, alkaline earth metal salts of ether carboxylic acids, alkaline earth metal oxides, hydroxides or alcoholates are used as catalysts. The use of products with a narrow homolog distribution can be preferred. Other active ingredients, auxiliaries and additives are, for example, nonionic polymers such as, for example, vinylpyrrolidone / vinyl acrylate copolymers, polyvinylpyrrolidone and vinylpyrrolidone / vinyl acetate copolymers and polysiioxanes, cationic polymers such as quaternized cellulose ethers, polysiioxanes with quaternary acrylamides, dimethyl-dimethyldiallyl groups, dimethyldiallyiallyiallyl - Ammonium chloride copolymers, dimethylaminoethyl methacrylate-vinylpyrrolidone copolymers quaternized with diethyl sulfate, vinylpyrrolidone-imidazolinium methochloride copolymers and quaternized polyvinyl alcohol, zwitterionic and amphoteric polymers such as, for example, acrylamidopropyl-tri- methyl-ammonyl amide / acrylate / methyl methacrylate / acrylic methacrylate / acrylate / methacrylate / acrylate methacrylate / acrylate .-Butylaminoethyl methacrylate / 2-hydroxypropyl methacrylate copolymers, anionic polymers such as, for example, polyacrylic acids, crosslinked polyacrylic acids, vinyl acetate / crotonic acid copolymers, vinylpyrrolidone / vinyl acrylate copolymers, Vinyla acetate / butyl maleate / isobornyl acrylate copolymers, methyl vinyl ether / maleic anhydride copolymers and acrylic acid / ethyl acrylate / N-tert-butyl acrylamide terpolymers,

Thickeners such as agar agar, guar gum, alginates, xanthan gum, gum arabic, karaya gum, locust bean gum, linseed gums, dextrans, cellulose derivatives, e.g. As methyl cellulose, hydroxyalkyl cellulose and carboxymethyl cellulose, starch fractions and derivatives such as amylose, amylopectin and dextrins, clays such as. B. bentonite or fully synthetic hydrocolloids such. B. polyvinyl alcohol,

Structurants such as glucose and maleic acid, hair-conditioning compounds such as phospholipids, for example soy lecithin, egg lecithin and cephalins, and silicone oils,

Protein hydrolyzates, in particular elastin, collagen, keratin, milk protein, soy protein and wheat protein hydrolyzates, their condensation products with fatty acids and quaternized protein hydrolyzates, perfume oils, dimethyl isosorbide and cyclodextrins,

Solubilizers such as ethanol, isopropanol, ethylene glycol, propylene glycol, glycerin and diethylene glycol,

Anti-dandruff agents such as piroctone olamine and zinc omadine, other substances for adjusting the pH value, Active ingredients such as panthenol, pantothenic acid, allantoin, pyrrolidone carboxylic acids and their salts, plant extracts and vitamins, cholesterol, light stabilizers,

Consistency enhancers such as sugar esters, polyol esters or polyol alkyl ethers, fats and waxes such as walrus, beeswax, montan wax, paraffins, fatty alcohols and fatty acid esters, fatty acid alkanolamides,

Complexing agents such as EDTA, NTA and phosphonic acids,

Swelling and penetration substances such as glycerol, propylene glycol monoethyl ether, carbonates, hydrogen carbonates, guanidines, ureas and primary, secondary and tertiary phosphates, imidazoles, tannins, pyrrole, opacifiers such as latex,

Pearlescent agents such as ethylene glycol mono- and distearate,

Blowing agents such as propane-butane mixtures, N ₂ O, dimethyl ether, CO ₂ and air as well as antioxidants.

The constituents of the water-containing carrier are used to produce the colorants according to the invention in amounts customary for this purpose; z. For example, emulsifiers are used in concentrations of 0.5 to 30% by weight and thickeners in concentrations of 0.1 to 25% by weight of the total colorant.

For the coloring result it can be advantageous to add ammonium or metal salts to the coloring agents. Suitable metal salts are e.g. B. formates, carbonates, halides, sulfates, butyrates, valerates, capronates, acetates, lactates, glycolates, tartrates, citrates, gluconates, propionates, phosphates and phosphonates of alkali metals, such as potassium, sodium or lithium, alkaline earth metals, such as magnesium, calcium, Strontium or barium, or of aluminum, manganese, iron, cobalt, copper or zinc, sodium acetate, lithium bromide, calcium bromide, calcium gluconate, zinc chloride, zinc sulfate, magnesium chloride, magnesium sulfate, ammonium carbonate, chloride and acetate being preferred. These salts are preferably present in an amount of 0.03 to 65, in particular 1 to 40, mmol based on 100 g of the total colorant. The pH of the ready-to-use coloring preparations is usually between 2 and 11, preferably between 5 and 10.

The present invention further relates to the use of nitrosopyridines or pyrimidines having the formula I,

(in which Q, R ¹ , R ² , R ³ and R ^{4 are} as defined above, as a coloring component in oxidation hair colorants.

Yet another object of the present invention relates to a process for dyeing keratin-containing fibers, in particular human hair, in which a dye containing A) at least one nitrosopyridine or pyrimidine of the formula I,

(D

in which Q, R \ R ² , R ³ and R ^{4 are} as defined above, and

B) at least one compound with primary or secondary amino group or hydroxy group, selected from primary or secondary aliphatic or aromatic amines, nitrogen-containing heterocyclic compounds, aromatic hydroxy compounds, amino acids, from 2 to 9 amino acids built oligopeptides and / or at least one CH- active connection, as well as usual cosmetic ingredients, applied to the keratin-containing fibers, left on the fiber for some time, usually about 30 minutes, and then rinsed out or washed out with a shampoo.

The nitrosopyridines and / or pyrimidines of the formula I and the compounds of component B can either be applied to the hair simultaneously or else in succession, it being irrelevant which of the two components is applied first. The optionally contained ammonium or metal salts can be added to the first or the second component. There may be an interval of up to 30 minutes between the application of the first and the second component. Pretreatment of the fibers with the saline solution is also possible.

The nitrosopyridines and / or pyrimidines of the formula I and the compounds of component B can either be stored separately or together, either in a liquid to pasty preparation (aqueous or anhydrous) or as a dry powder. If the components are stored together in a liquid preparation, this should be largely anhydrous to reduce a reaction of the components. When stored separately, the reactive components are only intimately mixed with one another immediately before use. In dry storage, a defined amount of warm (30 to 80 ° C) water is usually added before use and a homogeneous mixture is produced.

Examples

Preparation of a coloring solution

A slurry of 5 mmol of a nitroso compound of the formula I, 5 mmol of a compound of component B, 5 mmol of sodium acetate, 5 mmol of piperidine and a drop of a 20% strength fatty alkyl ether sulfate solution in 50 ml of water at 50 ° C. were prepared. After cooling to 30 ° C., the slurries were mixed with one another and adjusted to a pH of 9 with dilute NaOH or hydrochloric acid.

A strand of 90% gray, untreated human hair was introduced into this dye mixture at 30 ° C. for 30 minutes. The tress was then rinsed with lukewarm water for 30 seconds, dried with warm air and then combed out.

The respective color shades and color depths are shown in Table 1 below.

The color depth was rated on the following scale:

no or very pale color

(+) weak intensity + medium intensity

+ (+) medium to strong intensity ++ strong intensity

++ (+) strong to very strong intensity

+++ very strong intensity Table 1

Staining with 5-nitroso-2,4,6-triammopyrimidine

Claims

claims

1. means for dyeing keratin-containing fibers, in particular human hair, containing at least one nitrosopyridine and / or pyrimidine of the formula I as the coloring component,

(D

in the mean

Q is a nitrogen atom or the group CR ⁴ and

R ¹ , R ² , R ³ and R ⁴ , which may be the same or different, are hydrogen, halogen, a C _r C ₄ alkyl group, C _r C ₄ alkoxy group, C ^ C ^ hydroxyalkyl group or C _r C ₄ -

Hydroxyalkoxy group, a hydroxy group, a mercapto group, a sulfo group, a carboxy group or an amino group, which by C ^ C-alkyl, C ^ Or

Hydroxyalkyl or CC ₄ -acyl groups can be substituted, it also being possible for two of the radicals to form a fused aromatic or heteroaromatic ring together.

2. Composition according to claim 1, characterized in that as compounds with the formula I 2,6-diamino-3-nitrosopyridine, 2,4,6-triacetamido-3-nitrosopyridine, 5-nitroso-2,4,6-triaminopyrimidine , a 6-amino-4-hydroxy-2-mercapto-5-nitrosopyrimidine, 6-amino-2,4-dihydroxy-5-nitrosopyrimidine, 4,6-diamino-5-nitroso-2-thiopyrimidine, 2-amino- 4,6-diacetamido-5-nitrosopyrimidine, 2,4-diamino-6-hydroxy-5-nitrosopyrimidine, 4-amino-6-hydroxy-2-mercapto-5-nitrosopyrimidine, 2-amino-4,6-dihydroxy- 5-nitrosopyrimidine, 4,6-diamino-2-hydroxy-5-nitrosopyrimidine, 4-hydroxy-2-dimethylamino-5-nitroso-6-aminopyrimidine, 4-amino-6-hydroxy-2-methyl-5-nitrosopyrimidine, 4,6-Dihydroxy-2-mercapto-5-nitrosopyrimidine, 4-amino-6-hydroxy-2-methyl-5-nitrosopyrimidine and mixtures thereof can be used.

3. Composition according to one of claims 1 to 2, characterized in that the nitrosopyridines and / or pyrimidines of the formula I in an amount of 0.03 to 65 mmol, in particular from 1 to 40 mmol, based on 100 g of the total colorant , are included.

4. Agent according to one of claims 1 to 3, characterized in that it additionally has at least one compound with primary or secondary amino group or hydroxy group, selected from primary or secondary aromatic amines, nitrogen-containing heterocyclic compounds and aromatic hydroxy compounds, amino acids, from 2 to 9 amino acids built oligopeptides and / or at least one CH-active compound.

5. Composition according to claim 4, characterized in that the further compound is selected from primary or secondary amines from the group consisting of N- (2-hydroxyethyl) -N-ethyl-, N- (2-methoxyethyl) , 2,3-, 2,4-, 2,5-dichloro-p-phenylene diamine, 2-chloro-p-phenylene diamine, N, N-bis- (2-hydroxyethyl) -p-phenylene diamine, 2,5-dihydroxy -4- morpholinoaniline dihydrobromide, 2-, 3-, 4-aminophenol, o-, m-, p-phenylenediamine, 2,4-diaminophenoxyethanol, 2- (2,5-diaminophenyl) ethanol, 2,5-diaminotoluene , - phenol, -phenethol, 4-methylamino-, 3-amino-4- (2'-hydroxyethyloxy) -, 3,4-methylene-diamino-, 3,4-methylenedioxyaniol, 3-amino-2,4-dichloro -, 4-methylamino, 2-methyl-5-amino, 3-methyl-4-amino, 2-methyl-5- (2-hydroxyethylamino) -, 2-methyl-5-amino-4-chloro , 6-methyl-3-amino-2-chloro, 5- (2-hydroxyethylamino) -4-methoxy-2-methyl, 4-amino-2-aminomethyl-phenol, 2-hydroxymethyl-4-aminophenol, 2 -

Diethylaminomethyl-4-aminophenol, 2-dimethylaminomethyl-4-aminophenol, 2,6-dichloro-4-aminophenol, 1,3-diamino-2,4-dimethoxybenzene, 2-, 3-, 4-aminobenzoic acid, -phenylacetic acid, 2 , 3-, 2,4-, 2,5-, 3,4-, 3,5-diaminobenzoic acid, 4-, 5-aminosalicylic acid, 3-amino-4-hydroxy-, 4-amino-3-hydroxy - Benzoic acid, 2-, 3-, 4-aminobenzenesulfonic acid, 3-amino-4-hydroxybenzenesulfonic acid, 4-amino-3-hydroxynaphthalene-sulfonic acid, 6-amino-7-hydroxynaphthalene-2-sulfonic acid, 7-amino-4 -hydroxynaphthalene-2-sulfonic acid, 4-amino-5-hydroxynaphthalene-2,7-disulfonic acid, 3-amino-2-naphthoic acid, 3-aminophthalic acid, 5-aminoisophthalic acid, 1,3,5-, 1, 2, 4-triaminobenzene, 1,2,4,5-tetraaminobenzene tetrahydrochloride, 2,4,5-triaminophenol trihydrochloride, pentaaminobenzene pentahydrochloride, hexaaminobenzene-hexahydrochloride, 2,4,6-triaminoresorcinol-tri- hydrochloride, 4,5-diaminobenzene catechol sulfate, 4,6-diaminopyrogallol dihydrochloride, 3,5-diamino-4-hydroxybrenzate catechol sulfate, aromatic nitriles, containing nitro groups Amino compounds such as 3-amino-6-methylamino-2-nitro-pyridine, picraminic acid, 1- (2 (3) -nitro-4-amino) -phenylazo-2-hydroxy-7-trimethylammoniumnaphthalene chloride, 1-hydroxy- 2-amino-4,6-dinitro-benzene, 1-amino-2-nitro-4-bis- (2-hydroxyethyl) -amino-benzene, 1-amino-2- (2-hydroxyethyl) -amino-5- nitro-benzene (HC Yellow No. 5), 1-amino-2-nitro-4- (2-hydroxyethyl) aminobenzene (HC Red No. 7), 2-chloro-5-nitro-N-hydroxyethyl-1, 4-phenylenediamine, 1 - (2-hydroxyethyl) amino-2-nitro-4-amino-benzene (HC Red No. 3), 4-amino-3-nitrophenol, 4-amino-2-nitrophenol, 6-nitro -o-toluidine, 1-amino-3-methyl-4- (2-hydroxyethyl) amino-6-nitrobenzene (HC Violet No. 1), 1-amino-2-nitro-4- (2,3-dihydroxypropyl ) -amino-5-chlorobenzene on (HC Red No. 10), 4-amino-2-nitrodiphe nyl-amino-2'-carboxylic acid (2- (4-amino-2-nitroanilino) benzoic acid), 6-nitro-2,5-diaminopyridine, 2-amino-6-chloro-4-nitrophenol, 2-amino- 6-chloro-4-nitrophenol, 1-amino-2- (3-nitrophenylazo) -7-phenylazo-8-naphthol-3,6-disulfonic acid, disodium salt (Acid blue No. 29), 1-amino-2 - (2-hydroxy-4-nitrophenylazo) -8-naphthol-3,6-disulfonic acid, disodium salt (Palatinchrome green), 1-amino-2- (3-chloro-2-hydroxy-5-nitrophenylazo) -8-naphthol -3,6-disulfonic acid, disodium salt

(Gallion), 4-amino-4'-nitrostilbene-2,2'-disulfonic acid, disodium salt, 2,4-diamino-3 ', 5'-dinitro-2'-hydroxy-5-methyl-azobenzene (Mordant brown 4 ), 4'-amino-4-nitrodiphenylamine-2-sulfonic acid, 4'-amino-3'-nitrobenzophenone-2-carboxylic acid, 1 - amino-4-nitro-2- (2-nitrobenzylideneamino) benzene, 2- [ 2- (diethylamino) ethylamino] -5-nitroaniline, 3-amino-4-hydroxy-5-nitrobenzenesulfonic acid, (hydrate), 3-amino-3'-nitrobiphenyl, 3-amino-4-nitro-acenaphthene, 2- Amino-1-nitronaphthalene, 5-amino-6-nitrobenzo-1, 3-dioxole, anilines, in particular nitro group-containing anilines, such as 4-nitroaniline, 2-nitroaniline, 1,4-diamino-2-nitrobenzene, 1,2 -Diamino-4-nitrobenzene, 1-amino-2-methyl-6-nitrobenzene, 4-nitro-1, 3-phenylenediamine, 2-nitro-4-amino-1- (2-hydroxyethylamino) benzene, 2 -Nitro-1-amino-4- [bis- (2-hydroxyethyl) amino] benzene, 4-amino-2-nitrodiphenylamine-2'-carboxylic acid, 2-amino-6-chloro-4-nitrophenol, 1- Amino-5-chloro-4- (2-hydroxyethylamino) -2-nitrobenzene, anilines, especially anil containing nitro groups such as 4-nitroaniline, 2-nitroaniline, 1,4-diamino-2-nitrobenzene, 1,2-diamino-4-nitrobenzene, 1-amino-2-methyl-6-nitrobenzene, 4-nitro-1,3 -phenylenediamine, 2-nitro-4-amino-1 - (2-hydroxyethylamino) benzene, 2-nitro-1-amino-4- [bis- (2-hydroxyethyl) amino] benzene, 4-amino-2 -nitrodiphenylamine-2'-carboxylic acid, 2- Amino-6-chloro-4-nitrophenol, 1-amino-5-chloro-4- (2-hydroyethylamino) -2-nitrobenzene, aromatic anilines or phenols with a further aromatic radical such as 4,4'-diaminostilbene dihydrochloride, 4,4'-diaminostilbene-2,2'-disulfonic acid, Na salt, 4,4'-diaminodiphenylmethane, sulfide, sulfoxide, amine, 4,4'-diaminodiphenylamine-2-sulfonic acid, 4,4 '-Diaminobenzophenone, -diphenyl ether, 3,3', 4,4'-tetraaminodiphenyi-tetra-hydrochloride, 3,3 ', 4,4'-tetraamino-benzophenone, 1,3-bis- (2,4-diaminophenoxy) propane-tetrahydrochloride, 1,8-bis- (2,5-diaminophenoxy) -3,6-dioxaoctane-tetrahydrochloride, 1,3-bis- (4-aminophenylamino) -propane, -2-propanol, 1,3-bis- [N- (4-aminophenyl) -2-hydroxyethylamino] -2-propanol, N, N-bis- [2- (4-aminophenoxy) ethyl] methylamine trihydrochloride, nitrogen-containing heterocyclic compounds selected from the group consisting of 2-, 3-, 4-amino, 2-amino-3-hydroxy, 2,6-diamino, 2,5-diamino, 2,3-diamino, 2- Dimethylamino-5-amino-, 3-amino-2-methylamino-6-methoxy-, 2, 3-diamino-6-methoxy, 3,5-diamino-2,6-dimethoxy, 2,4,5-triamino, 2,6-dihydroxy-3,4-dimethylpyridine, 4,5,6 -Triamino-, 2-hydroxy-4,5,6-triamino-, 4-hydroxy-2,5,6-triamino-, 2,4,5,6-tetraamino-, 2-methylamino-4,5,6 -triamino-, 2,4-, 4,5-diamino-, 2-amino-4-methoxy-6-methyl-pyrimidine, 2,3,4-trimethylpyrrole, 2,4-dimethyl-3-ethyl-pyrrole, 3,5-diaminopyrazole, -1,2,4-triazole, 3-amino, 3-amino-5-hydroxypyrazole, 2-, 3-, 8-aminoquinoline, 4-aminoquininaldine, 2-, 6-aminonicotinic acid , 5-aminoisoquinoline, 5-, 6-aminoindazole, 5-, 7-amino-benzimidazole, -benzothiazole, 2,5-dihydroxy-4-morpholinoaniline as well as indole and indoline derivatives, such as 4-, 5-, 6-, 7 -Aminoindole, 4-, 5-, 6-, 7-hydroxyindole, 5,6-dihydroxyindole, 5,6-dihydroxyindoline, 4-hydroxyindoline and the hydroxypyrimidines disclosed in DE-U1-299 08 573, and in each case from those with preferably inorganic acids formed physiologically acceptable salts of these compounds, aromatic hydroxy compounds selected from the group, b consisting of 2-, 4-, 5-methylresorcinol, 2,5-dimethylresorcinol, resorcinol, 3-methoxyphenol, pyrocatechol, hydroquinone, pyrogallol, phloroglucinol, hydroxyhydroquinone, 2-, 3-, 4-methoxy-, 3-dimethylamino -, 2- (2-hydroxyethyl) -, 3,4-methylenedioxyphenol, 2,4-, 3,4-dihydroxybenzoic acid, -phenylacetic acid, gallic acid, 2,4,6-trihydroxybenzoic acid, - acetophenone, 2-, 4 -Chlorresorcin, 1-naphthol, 1,5-, 2,3-, 2,7-dihydroxynaphthalene, 6-dimethylamino-4-hydroxy-2-naphthalenesulfonic acid, 3,6-dihydroxy-2,7-naphthalenesulfonic acid, amino acids selected from the group arginine, histidine, tyrosine, phenylalanine, DOPA (dihydroxyphenylalanine), omithin, lysine and tryptophan, oligopeptide selected from glutathione or the oligopeptides contained in the hydrolysates of collagen, keratin, casein, elastin, soy protein, wheat gluten or almond protein,

CH-active compounds selected from the group consisting of 1, 2,3,3-tetramethyl-3H-indolium iodide, 1,2,3,3-tetramethyl-3H-indolium-p-toluenesulfonate,

1,2,3,3-tetramethyl-3H-indium methanesulfonate, Fischer's base (1,3,3-trimethyl-2-methyleneindoline), 2,3-dimethyl-benzothiazolium iodide, 2,3-dimethyl-benzothia zolium p-toluenesulfonate, 1,2-dimethyl-naphtho [1,2-d] thiazolium p-toluenesulfonate, 1-ethyl-2-methyl-naphtho [1,2-d] thiazolium p-toluenesulfonate, rhodanine, Rhodanine-3-acetic acid, 1-ethyl-2-quinaldinium iodide, 1, 4-dimethylquinolinium iodide, 1-methyl-2-quinaldinium iodide, 1, 4-dimethylquinolinium iodide, barbituric acid, thiobarbituric acid, 1, 3-dimethylthiobarbituric acid, 1, 3-diethylthiobarbituric acid, diethylthiobarbituric acid, oxindole, 3-indoxy acetate, coumaranone, 1-methyl-3-phenyl-2-pyrazolinone, indane-1,3-dione, indane-1-one, 1-dicyanomethylene indane.

6. Composition according to claim 5, characterized in that the further compound is selected from the group consisting of N- (2-hydroxyethyl) -N-ethyl-, 2-chloro-p-phenylenediamine, N, N-bis- (2nd -Hydroxyethyl) -p-phenylenediamine, 4-aminophenol, p-phenylenediamine, 2- (2,5-diaminophenyl) -ethanol, 2,5-diaminotoluene, 3,4-methylenedi- oxyaniline, 2-amino-4- (2nd -hydroxyethylamino) anisole, 2- (2,4-diaminophenoxy) ethanol, 3-amino-2,4-dichloro, 2-methyl-5-amino, 3-methyl-4-amino, 2-methyl -5- (2-hydroxyethylamino) -, 2-methyl-5-amino-4-chloro, 6-methyl-3-amino-2-chloro, 2-aminomethyl-4-aminophenol, 2- Diethylaminomethyl-4-aminophenol, 2-dimethylaminomethyl-4-aminophenol, 2,6-dichloro-4-aminophenol, 2-hydroxymethyl-4-aminophenol, 3,4-methylenedioxyphenol, 3,4-diaminobenzoic acid, 2,5-diamino- , 2-dimethylamino-5-amino, 3-amino-2-methylamino-6-methoxy, 2,3-diamino-6-methoxy, 3,5-diamino-2,6-dimethoxy-, 2,6 -Dihydroxy-3,4-dimethylpyridine, 2-hydroxy-4,5,6-triamino-, 4-hydroxy-2,5,6-triamino-, 2,4,5,6-Te traamino-, 2-methylamino-4,5,6-triamino-pyrimidine, 3,5-diaminopyrazole, 3-amino-5-hydroxypyrazole, 5,6-dihydroxyindole and 5,6-dihydroxyindoline, ß-alanine, L -Proline, L-lysine, DL-tyrosine and in each case from the physiologically tolerable salts of these compounds, which are preferably formed with inorganic acids.

7. Composition according to one of claims 1 to 6, characterized in that there are color enhancers selected from the group consisting of piperidine, piperidine-2-carboxylic acid, piperidine-3-carboxylic acid, piperidine-4-carboxylic acid, pyridine, 2-hydroxypyri - Contains din, 3-hydroxypyridine, 4-hydroxy pyridine, imidazole, 1-methylimidazole, histidine, pyrrolidine, proline, pyrrolidone, pyrrolidone-5-carboxylic acid, pyrazole, 1, 2,4-triazole, piperazidine or any mixtures thereof ,

8. Agent according to one of claims 1 to 7, characterized in that there are direct dyes from the group of nitrophenylenediamines, nitroaminophenols, anthraquinones or indophenols preferably in an amount of 0.01 to 20 wt .-%, based on the total colorant , contains.

9. Composition according to one of claims 1 to 8, characterized in that ammonium or metal salts selected from the group of formates, carbonates, halides, sulfates, butyrates, valerates, capronates, acetates, lactates, glycolates, tartrates, citrates, gluconates, Propionates, phosphates and phosphonates of alkali metals, such as potassium, sodium or lithium, alkaline earth metals, such as magnesium, calcium, strontium or barium, or of aluminum, manganese, iron, cobalt, copper or zinc, can be added.

10. Agent according to one of claims 1 to 9, characterized in that it contains oxidizing agents, in particular H ₂ O ₂ , in an amount of 0.01 to 6 wt .-%, based on the application solution.

11. Agent according to one of claims 1 to 10, characterized in that it contains anionic, zwitterionic or nonionic surfactants.

12. Use of nitrosopyridines and / or pyrimidines with the formula I,

^R1 (l) in the mean

Q is a nitrogen atom or the group CR ⁴ and

R ¹ , R ² , R ³ and R ⁴ , which may be the same or different, are hydrogen, halogen, a C Oj-alkyl group, CC ^ alkoxy group, CrOrHydroxyalkylgruppe or CC ₄ -

Hydroxyalkoxy group, a hydroxyl group, a mercapto group, a sulfo group, a carboxy group or an amino group which can be substituted by C _r C ₄ alkyl, C _r C ₄ -

Hydroxyalkyl or C _r C ₄ -acyl groups can be substituted, it also being possible for two of the radicals to form a fused aromatic or heteroaromatic ring together, as a coloring component in oxidation hair colorants.

13. A process for dyeing keratin fibers, in particular human hair, in which a colorant containing A) at least one nitrosopyridine and / or pyrimidine of the formula I.

R1 (D

in the mean

Q is a nitrogen atom or the group CR ⁴ and

R ¹ , R ² , R ³ and R ⁴ , which may be the same or different, are hydrogen,

Halogen, a C _r C ₄ alkyl group, C ^ C ^ alkoxy group, C, -C ₄ -

Hydroxyalkyl group or CrCή-hydroxyalkoxy group, a hydroxy group, a mercapto group, a sulfo group, a carboxy group or one

Amino group which can be substituted by CC ₄ -alkyl-, C Oj-hydroxyalkyl- or C _r C ₄ -

Acyl groups can be substituted, where two of the radicals together can form a fused aromatic or heteroaromatic ring, and B) at least one compound with a primary or secondary amino group or hydroxyl group, selected from primary or secondary aromatic amines, nitrogen-containing heterocyclic compounds and aromatic hydroxy compounds, amino acids, from 2 to 9 amino acids composed of oligopeptides and / or at least one CH-active compound , and usual cosmetic ingredients, applied to the keratin fibers, left on the fibers for some time, usually about 30 minutes, and then rinsed out or washed out with a shampoo.