EP1044185A2 - New derivatives of p-aminophenol and their use - Google Patents

Abstract

Compounds of general formula (I), wherein A, B,C and D represent, independently from each other, an -OH- or -NHR- group, wherein R stands for a hydrogen atom or a C1-4 alkyl radical, with the proviso that A, B, C or D respectively stands for a hydroxy group, X stands for oxygen, sulphur, a sulfoxy or sulfoxyl group, R<1> and R<2> represent, independently from each other, hydrogen, fluorine, chlorine, a C1-4 alkyl or hydroxyalkyl group or a C2-4-dihydroxy-alkyl group, preferably a C2-dihydroxy alkyl group, and the physically acceptable salts of these compounds are highly suitable for use as developer components in oxidation coloring agents.

Description

"New p-aminophenol derivatives and their use"

The invention relates to new p-aminophenol derivatives, their use for dyeing keratin fibers and dyes containing these compounds.

For dyeing keratin fibers, especially human hair, the so-called oxidation colorants play a preferred role because of their intense colors and good fastness properties. Such colorants contain oxidation dye precursors, so-called developer components and coupler components. The developer components form the actual dyes under the influence of oxidizing agents or atmospheric oxygen with one another or under coupling with one or more coupler components.

Good oxidation dye precursors must first of all meet the following requirements: they must develop the desired color shades with sufficient intensity and authenticity in the oxidative coupling. They must also have a good ability to draw onto the fiber, whereby there must be no noticeable differences between stressed and freshly regrown hair, especially with human hair (leveling ability). They should be resistant to light, heat and the influence of chemical reducing agents, e.g. B. against perm fluids. After all, if they are used as hair colorants, they should not stain the scalp too much, and above all they should be harmless from a toxicological and dermatological point of view.

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 its derivatives used.

Special representatives are, for example, p-phenylenediamine, p-toluenediamine. 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-aminopyrazolone-5, 4-amino-3-methylphenol, 2- Aminomethyl-4-aminophenol, 2-hydroxy-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triamino-4-hydroxypyrimidine and 1,3-N, N'-bis (2'-hydroxyethyl) -N, N'-bis (4'-aminophenyl) diamino-propan-2-ol.

M-Phenylenediamine derivatives, naphthols, resorcinol and resorcinol derivatives, pyrazolones and m-aminophenols are generally used as coupler components. Suitable coupler substances are, in particular, 1-naphthol, 1,5-, 2,7- and 1,7-dihydroxynaphthalene, 5-amino-2-methylphenol, m-aminophenol, resorcinol, resorcinol monomethyl ether, m-phenylenediamine, l-phenyl -3-methyl-pyrazolone-5, 2,4-dichloro-3-aminophenol, 1,3-bis (2,4-diaminophenoxy) propane, 2-chloro-resorcinol, 4-chloro-resorcinol, 2 -Chlor-6-methyl-3-aminophenol, 2-amino-4-hydroxypyridine, 2-methylresorcinol, 5-methylresorcinol and 2-methyl-4-chloro-5-aminophenol.

With a developer component or a special coupler / developer combination alone, it is usually not possible to obtain a color shade that looks natural on the hair. In practice, therefore, combinations of different developer components and coupler components are usually used. There is therefore a constant need for new, improved dye components.

It was therefore the object of the present invention to find new developer components which meet the requirements for oxidation dye precursors to a particular degree. It has now been found that certain, previously unknown, p-aminophenol derivatives meet the requirements placed on developer components in a particularly high degree. Thus, using these developer components with most known coupler components, brilliant color shades are obtained, especially in the brown and red range. The dyeings achieved are characterized by extraordinary light and wash fastness.

A first subject of the present invention are therefore

p-aminophenol derivatives of the general formula (I),

in the

- A, B, C and D independently of one another represent an -OH or -NHR group, in which R represents a hydrogen atom or a C -alkyl radical, with the proviso that either A or B and C or D are each there is a hydroxy group,

- X stands for oxygen, sulfur, a sulfoxy or a sulfoxyl group and

- R ¹ and R ² independently of one another represent hydrogen, fluorine, chlorine, a C _M alkyl or hydroxyalkyl group or a C 1- dihydroxy alkyl group, preferably a C ₂ dihydroxy alkyl group.

These compounds can be prepared using known organic synthesis methods. With regard to the details, reference is expressly made to the synthesis example detailed in the example section. Since all of the substances according to the invention are amino compounds, the known acid addition salts can be prepared from them in a conventional manner. All statements in this document and accordingly the claimed scope of protection therefore relate both to the p-aminophenol derivatives according to formula (I) which are present in free form and to their water-soluble, physiologically tolerable salts. Examples of such salts are the hydrochlorides, the hydrobromides, the sulfates, the phosphates, the acetates, the propionates, the citrates and the lactates.

The p-aminophenol derivatives of the formula (I) in which the group X represents an oxygen or sulfur atom have proven to be particularly suitable according to the invention. Oxygen has proven to be a particularly advantageous group X.

Also preferred according to the invention are those p-aminophenol derivatives according to formula (I) in which those groups A, B, C and D which do not represent -OH groups represent -NH ₂ groups.

Furthermore, hydrogen has proven to be a particularly suitable radical R ¹ and R ² in p-aminophenol derivatives according to formula (I).

Finally, those p-aminophenol derivatives according to formula (I) have proven to be particularly suitable according to the invention in which the substituents R ¹ and R ² , A and C and B and D are in each case the same.

A substance which is outstandingly suitable in the sense of the invention is 4-amino-2 - (((5-amino-2-hydroxyphenyl) methoxy) methyl) phenol.

A second object of the present invention is the use of the aforementioned p-aminophenol derivatives as a developer component in oxidation colorants. Finally, a third object of the present invention are oxidation colorants for dyeing keratin fibers containing coupler components and developer components in a water-containing carrier, which contain one of the aforementioned p-aminophenol derivatives as developer component.

Keratin fibers are to be understood here as furs, wool, feathers and in particular human hair. Although the oxidation colorants according to the invention are primarily suitable for dyeing keratin fibers, there is in principle nothing to prevent their use in other areas, particularly in color photography.

The oxidation colorants according to the invention contain the developer components of the formula (I) and coupler components and, if desired, can also contain further developer components and coupler components.

Further developer components preferred according to the invention are p-phenylenediamine, p-toluenediamine, p-aminophenol, 2- (2,5-diaminophenyl) ethanol, N, N-bis- (2-hydroxyethyl) -p-phenylenediamine, 1 -Phenyl-3-carboxyamido-4-amino-pyrazolone-5, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 2-aminomethyl-4-aminophenol, 2,4,5,6-tetra-aminopyrimidine , 2-Hydroxy-4,5,6-triaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine, 2-dimethylamino-4,5,6-triaminopyrimidine, 2nd - Hydroxyethylaminomethyl-4-aminophenol and 4,4'-diaminodiphenylamine. 2-hydroxymethyl-4-aminophenol, bis (2-hydroxy-5-aminophenyl) methane, 1, 4-bis (4-aminophenyl) diazacycloheptane, 1, 3 -N, N 'bis (2nd '-hydroxyethyl) -N, N' -bis (4 '-aminopheny l) -diamino-1,3-propan-2-ol and 4,5-diaminopyrazole derivatives according to EP 0 740 931 or WO 94/08970, such as 4,5-diamino-l- (2'-hydroxyethyl) pyrazole, are also developer components which can preferably be combined with the developer components according to the invention.

Very particularly preferred further developer components are p-phenylenediamine, 2,4,5,6-tetraminopyrimidine, 4,5-diamino-1 - (2'-hydroxyethyl) pyrazole, N, N-bis- (2-hy- doxy-ethyl) -p-phenylenediamine, bis (2-hydroxy-5-aminophenyl) methane. 2- (2.5-diaminophenyl) ethanol, 3-methyl-4-aminophenol, 4-hydroxy-2,5,6-triaminopyrimidine. 2-amino-methyl-4-aminophenol and p-toluenediamine.

Coupler components preferred according to the invention are 1-naphthol and pyrogallol. 1.5-, 2.7- and 1, 7-dihydroxynaphthalene, o-aminophenol, 5-amino-2-methylphenol, m-aminophenol, resorcinol, resorcinol monomethyl ether, l-phenyl-3-methyl-pyrazolone-5, 2,4- Dichloro-3-aminophenol, 1,3-bis (2,4-diaminophenoxy) propane, 4-chlororesorcinol, 2-chloro-6-methyl-3-aminophenol, 2-methylresorcinol, 5-methylresorcinol, 2,5- Dimethylresorcinol, 2,6-dihydroxypyridine, 2,6-diaminopyridine, 2-amino-3-hydroxypyridine, 2,6-dihydroxy-3,4-diaminopyridine, 2-methyl-4-chloro-5-amino-phenol, 6- Methyl-l, 2,3,4-tetrahydro-quinoxaline, 3-amino-2-methylamino-6-methoxypyridine, 4-amino-2-hydroxytoluene, 2,6-bis (2-hydroxyethylamino) toluene, 3, 4-methylenedioxyphenol, 3,4-methylenedioxyaniline, 2,4-diaminophenoxyethanol, 2-amino-4- (2-hydroxyethylamino) anisole and 2,6-dimethyl-3-aminophenol.

Particularly preferred coupler components are 1-naphthol, m-aminophenol, 5-amino-2-methylphenol, 3-methylsulfonylamino-2-methyl-aniline, 3-amino-2-methylamino-6-methoxy-pyridine, 2,6- Dimethyl-3-aminophenol, 2,4-diaminophenoxyethanol, 2,7-dihydroxy-naphthalene, 6-methyl-l, 2,3,4-tetrahydro-quinoxaline, 1, 7-dihydroxy-naphthalene, 2-methyl- 4-chloro-5-aminophenol, 3,4-methylenedioxyaniline, 2-methyl-resorcinol, 4-chlororesorcinol, 3,4-methylenedioxyphenol, 2-amino-3-hydroxypyridine and 2-chloro-6-methyl-3- aminophenol.

These further developer and coupler components are usually used in free form. For substances with amino groups, however, it can be preferred to use them in salt form, in particular in the form of the hydrochlorides and sulfates.

The hair colorants according to the invention preferably contain both the developer components and the coupler components in an amount of 0.005 to 20% by weight, preferably 0.1 to 5% by weight, based in each case on the total oxidation colorant. there developer components and coupler components are generally used in approximately molar amounts to one another. If the molar use has also proven to be expedient, a certain excess of individual oxidation dye precursors is not disadvantageous, so that developer components and coupler components in a molar ratio of 1: 0.5 to 1: 3, in particular 1: 1 to 1: 2 , can be included.

In a preferred embodiment, the hair colorants according to the invention contain, in addition to the oxidation dye precursors, customary direct dyes for further modification of the color shades. Direct dyes are usually nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinones or indophenols. Preferred substantive dyes are those with 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 and 4-amino-2-nitrodiphenylamine-2 '-carboxylic acid, 6-nitro - 1, 2,3, 4-tetrahydroquinoxaline, hydroxyethyl-2-nitro-toluidine, picramic acid, 2-amino-6-chloro-4-nitrophenol and 4-N-ethyl-1,4-bis (2'-hydroxyethylamino) -2-nitrobenzene hydrochloride. The compositions according to the invention in accordance with 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, rotten bark, sage, blue wood, madder root, catechu, sedre and alkanna root.

Further dye components contained in the colorants according to the invention can also be indoles and indolines, and also their physiologically tolerable salts. Preferred examples are 5,6-dihydroxyindole, N-methyl-5,6-dihydroxyindole, N-ethyl-5,6-dihydroxyindole, N-propyl-5,6-dihydroxyindole, N-butyl-5,6-dihydroxyindole , 6-hydroxyindole, 6- Aminoindole and 4-aminoindole. Also preferred are 5.6-dihydroxyindoline. N-methyl-5,6-dihydroxyindoline, N-ethyl-5,6-dihydroxyindoline, N-propyl-5,6-dihydroxyindoline. N-butyl-5,6-dihydroxyindoline, 6-hydroxyindoline, 6-aminoindoline and 4-aminoindoline.

It is not necessary that the Oxidationsfarbstoffvo products or the substantive dyes each represent uniform compounds. Rather, the hair colorants according to the invention, due to the production process for the individual dyes, may contain minor components in minor amounts, provided that these do not adversely affect the coloring result or for other reasons. e.g. toxicological, must be excluded.

With regard to the dyes which can be used in the hair colorants and tints according to the invention, reference is also expressly made to the monograph Ch. Zviak, The Science of Hair Care, chapter 7 (pages 248-250; direct dyes), and chapter 8, pages 264-267; Oxidationsfarbstoffvoφrodukte), published as volume 7 of the "Dermatology" series (publisher: Ch. Culnan and H. Maibach), published by Marcel Dekker Inc., New York, Basel, 1986, and the "European inventory of cosmetic raw materials" from the European Community, available in diskette form from the Federal Association of German Industry and Commerce for Medicines, Reformed Products and Body Care Products, Mannheim.

To produce the colorants according to the invention, the oxidation dye precursors are incorporated into a suitable water-containing carrier. For the purpose of hair coloring, such carriers are e.g. Creams, emulsions, gels or also surfactant-containing foaming solutions, e.g. Shampoos, aerosols or other preparations that are suitable for use on the hair.

The colorants according to the invention can furthermore contain all active substances, additives and auxiliaries known for such preparations. In many cases, the colorants contain at least one surfactant, in principle both anionic and zwitterionic, am- pholytic, nonionic and cationic surfactants are suitable. 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, glycol or polyglycol ether groups, ester, ether and amide groups and hydroxyl groups can be contained in the molecule. 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, alpha-sulfofatty acid methyl ester 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 -SO3 H, in which R is a preferably linear alkyl group with 10 to 18 C 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, which are adducts of about 2-15 molecules of ethylene oxide and / or propylene oxide with fatty alcohols with 8 to 22 carbon atoms.

Preferred anionic surfactants are alkyl sulfates, alkyl polyglycol ether sulfates and ether carboxylic acids having 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 C8-C22 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 -SO group in the molecule. Particularly suitable zwitterionic surfactants are the so-called betaines such as the N-alkyl-N, N-dimethylammonium glycinate, for example the coconut alkyl dimethylammonium glycinate, N-acylaminopropyl-N, N-dimethylammonium glycinate, for example the coconut acylaminopropyl 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 cocoacylaminoethylhydroxyethylcarboxymethylglycineate. A preferred zwitterionic surfactant is the fatty acid amide derivative known under the INCI name Cocamidopropyl Betaine.

Ampholytic surfactants are surface-active compounds which, apart from a C _{8, 8} - at least nogruppe alkyl or acyl group in the molecule one free amino and contain at least one -COOH or -SO H group and are capable of forming inner salts. are. Examples of suitable ampholytic surfactants are N-alkyl glycine. N-alkyl propionic acids. N-alkylaminobutyric acids. N-alkyliminodipropionic acids. N-hydroxyethyl-N-alkylamidopropylglycine, N-alkyltaurine. N-alkyl sarcosines. 2-alkylaminopropionic acids and alkylaminoacetic acids each with about 8 to 18 carbon atoms in the alkyl group. Particularly preferred ampholytic surfactants are N-coconut alkylamino propionate, coconut acylaminoethyl aminopropionate and C-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 groups. 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 C atoms, with fatty acids with 12 to 22 C atoms and with alkylphenols with 8 to 15 C atoms in the alkyl group , C ₁₂ . ₂₂ fatty acid monoesters and diesters of adducts of 1 to 30 moles of ethylene oxide with glycerol, C o-22 alkyl mono- and oligoglycosides and their ethoxylated analogues,

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, stearyltrimethylammomum 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 Coming 929 emulsion (containing a hydroxylamino-modified silicone, which is also referred to as amodimethicone) becomes). 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 readily biodegradable quaternary Esterverbindungen are so-called "esterquats", such as those sold under the trademark Stepantex ^® methyl-hydroxyalkyl-dialkoyloxyalkyl methosulfates and the products sold under the trade name Dehyquart ^® products such as Dehyquart AU-46th

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

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. Distribution can be used. “Normal” homolog distribution is understood to mean mixtures of homologues which are obtained as catalysts when converting fatty alcohol and alkylene oxide using alkali metals, alkali metal hydroxides or alkali metal alcoholates. By 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 polysiloxanes, cationic polymers such as quaternized cellulose ethers, polysiloxanes with quaternary groups, dimethyldiallyium chloride, ammonium ammonium amide, dimethyldiallylammonylammonylammonylammonium copolymers quaternized with diethyl sulfate thylaminoethylmethacrylat dimethyl-vinylpyrrolidone copolymers, vinylpyrrolidone-imidazolidinone niummethochlorid copolymers and quaternized polyvinyl alcohol, zwitterionic and amphoteric polymers such as, for example, acrylamidopropyl trimethyl ammonium chloride / acrylate copolymers and octylacrylamide / methyl methacrylates lat / tert. 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, vinyl acetate t / butyl maleate / isobomylacrylate copolymers, methyl vinyl ether / maleic anhydride copolymers and acrylic acid / ethyl acrylate / Ν-butyl acrylamide teφolymers,

Thickeners such as agar agar, guar gum, alginates, xanthan gum, gum arabic, karaya gum, locust bean gum, linseed gums, dextrans, cellulose derivatives, e.g. B. 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 as polyvinyl alcohol,

Structurants such as glucose and maleic acid, hair-conditioning compounds such as phospholipids. for example soy lecithin. Egg lecithin and cephaline, as well as silicone oils,

Protein hydrolyzates, especially 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 generators 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,

Opacifiers like 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: 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 used.

In principle, the oxidative development of the coloring can take place with atmospheric oxygen. However, a chemical oxidizing agent is preferably used, especially if, in addition to the coloring, a lightening effect on human hair is desired. Persulfates, chlorites and in particular hydrogen peroxide or its adducts with urea, melamine and sodium borate are suitable as oxidizing agents. It is also possible to carry out the oxidation with the aid of enzymes. The enzymes can be used to transfer atmospheric oxygen to the developer component or to enhance the effect of small amounts of oxidizing agents present. An example of an enzymatic process is the procedure to increase the effect of small amounts (e.g. 1% and less, based on the total agent) of hydrogen peroxide by peroxidases.

The preparation of the oxidizing agent is expediently mixed with the preparation from the oxidation dye pre-products immediately before hair coloring. The resulting ready-to-use hair color preparation should preferably have a pH in the range from 6 to 10. It is particularly preferred to use the hair dye in a weakly alkaline environment. The application temperatures can range between 15 and 40 ° C. After an exposure time of approx. 30 minutes, the hair dye is removed from the hair to be colored by rinsing. Washing with a shampoo is not necessary if a carrier that contains a lot of surfactants, e.g. a coloring shampoo was used.

The following examples are intended to explain the subject of the invention in more detail. Examples

1. Synthesis example

Synthesis of 4-amino-2 - (((5-amino-2-hydroxyphenyl) methoxy) methyl) phenol

Diazonium solution (solution A):

A solution consisting of 26 g (0.15 mol) of sulfanilic acid and 75 ml (0.15 mol) of 2N sodium hydroxide solution was mixed with 10.35 g (0.15 mol) of sodium nitrite at a temperature of + 5 ° C added in 125 ml of water. 131 ml (0.38 mol) of 10% hydrochloric acid were added dropwise over 30 minutes while cooling (+ 5 ° C.).

Solution A was added dropwise to an ice-cooled solution consisting of 17.25 g (0.075 mol) of bis (2-hydroxybenzyl) ether in 120 ml (0.3 mol) of 10% sodium hydroxide solution. After the addition had ended, the mixture was stirred at 20 ° C. for 1.5 hours.

69 g (0.4 mol) of sodium dithionite were then added over the course of 2 minutes. After 20 minutes at 75 ° C., the product was suctioned off and washed with water. The product was obtained in the form of colorless crystals with a melting point of 175 ° C. (dec.).

2. Discolorations

First, a cream base of the following composition was produced [unless otherwise stated, all data are in g]:

Taig fatty alcohol 17.0

Lorol ^® techn. ' 4.0

Texapon ^® N 28 ² 40.0 Dehyton ^® K ³ 25.0

Eumulgin ^® B 2 1.5 distilled water 12.5

1

C _j 2- 1 g fatty alcohol (HENKEL)

Sodium lauryl ether sulfate (approx. 28% active substance; INCI name: Sodium Laureth Sulfate) (HENKEL)

Fatty acid amide derivative with betaine structure of the formula

R-CONH (CH) N + (CH) CH COO ^" (approx. 30% active substance; INCI name Cocoamidopropyl Betaine) (HENKEL)

Cetylstearyl alcohol with approx. 20 mol EO (INCI name: Ceteareth-20) (HENKEL)

The following hair color cream emulsion was then produced on the basis of this cream:

Cream base 50.0

Developer component 7.5 mmol *

Coupler component 7.5 mmol *

Na SO (inhibitor) 1.0

(NH) SO

4 2 4 1.0 conc. Ammonia solution ad pH 10

Water ad 100

* unless otherwise noted

The ingredients were mixed together in order. With appropriate reductions in the water content, direct dyes were optional admitted. After the addition of the oxidation dye products and the inhibitor, the pH of the emulsion was first adjusted to 10 with concentrated ammonia solution, and the mixture was then made up to 100 g with water.

The oxidative development of the color was carried out with 3% hydrogen peroxide solution as the oxidation solution. For this purpose, 100 g of the emulsion were mixed with 50 g of hydrogen peroxide solution (9%) and mixed.

The coloring cream was applied to approx. 5 cm long strands of standardized, 90% gray, but not specially pretreated human hair and left there at 32 ° C for 30 minutes. After the dyeing process was completed, the hair was rinsed, washed with a conventional shampoo and then dried. The following coupler and developer components or substantive dyes were used for the colorations:

Developer components

4-amino-2 - (((5-amino-2-hydroxyphenyl) methoxy) methyl) phenol (E 1)

2,4,5,6-tetraaminopyrimidine (E2)

4,5-diamino-l- (2-hydroxyethyl) pyrazole (E3)

P-phenylenediamine (E4)

N, N-bis (2-hydroxyethyl) p-phenylenediamine (E5)

4-hydroxy-2,5,6-triaminopyrimidine (E6)

P-toluenediamine (E7)

2- (2,5-diaminophenyl) ethanol (E8)

• 2-aminomethyl-4-aminophenol (E9)

4-amino-3-methylphenol (E 10)

Bis (2-hydroxy-5-aminophenyl) methane (egg l)

Coupler components

• 1-naphthol (Kl) 2-methyl-5-aminophenol (K2) 2-chloro-6-methyl-3-aminophenol (K3) 2-amino-3-hydroxy-pyridine (K4) 2,6-dimethyl-3-aminophenol (K5) m-aminophenol (K6) 2,7-dihydroxy-naphthalene (K7) 4-chlororesorcinol (K8) 2-methyl-4-chloro-5-aminophenol (K9) 6-methyl-1,2,3, 4- tetrahydro-quinoxaline (K 10) 2-methylresorcinol (Cl 1)

3-amino-2-methylamino-6-methoxy-pyridine (K12) 2,4-diamino-phenoxyethanol (Cl 3) 3-methylsulfonylamino-2-methyl-aniline (K 14) 1,7-dihydroxy-naphthalene (Cl 5 ) 3,4-methylenedioxyphenol (cl 6) 3,4-methylenedioxyaniline (cl 7) m-phenylenediamine (cl 8)

Direct dyes

6-nitro-1, 2,3, 4-tetrahydroquinoxaline (D 1)

2-nitro-4-amino-diphenylamine-2 ^' -carboxylic acid (D2)

2-amino-6-chloro-4-nitrophenol (D3)

2-nitro-l-amino-4-bis (2-hydroxyethyl) aminobenzene (D4)

2-nitro-1- (2-hydroxyethyl) amino-4-methylbenzene (D5)

2- (2 ^' -hydroxyethylamino) -4,6-dinitrobenzene (D6)

1 - (2'-hydroxyethyl) amino-2-nitro-4-bis (2-hydroxyethyl) aminobenzene (D7)

1 - (2-hydroxyethyl) amino-2-nitro-4-aminobenzene (D8)

4- (2-nitrophenyl) aminophenol (D9) The following colors were found:

'0.375 mmol each

Claims

 P a t e n t a n s r u c h e

p-Aminophenol derivatives of the general formula (I).

in the

- A, B, C and D independently represent an -OH or -NHR group, wherein R stands for a hydrogen atom or a C, - ₄ alkyl, with the proviso that in each case either A or B and C or D represents a hydroxy group

- X stands for oxygen, sulfur, a sulfoxy or a sulfoxyl group

- R ¹ and R ² independently of one another represent hydrogen, fluorine, chlorine, a C _M alkyl or hydroxyalkyl group or a C 1- dihydroxy alkyl group, preferably a C ₂ dihydroxy alkyl group, and the physiologically tolerable salts of these compounds .

2. p-aminophenol derivatives according spoke 1, characterized in that the Grappe X stands for an oxygen or sulfur atom, in particular for an oxygen atom.

3. p-aminophenol derivatives according spoke 1 or 2, characterized in that the groups A, B, C and D, which do not stand for -OH-grapples, stand for -NH ₂ -groups.

4. p-aminophenol derivatives according to one of claims 1 to 3, characterized in that R ¹ and R ^{2 are} hydrogen.

5. p-aminophenol derivatives according to one of claims 1 to 4, characterized in that the groups

- R ¹ and R ² as well

- A and C and - B and D are the same.

6. 4- Amino-2 - (((5-amino-2-hydroxyphenyl) methoxy) methyl) phenol.

7. Use of p-aminophenol derivatives according to one of claims 1 to 6 and their physiologically tolerable salts as developer component in oxidation colorants.

8. Oxidation dye for dyeing keratin fibers, containing coupler components and developer components in a water-containing carrier, characterized in that it contains at least one p-aminophenol derivative as the developer component according to one of claims 1 to 6.

9. Oxidation dye according to spoke 8, characterized in that there is at least one coupler component, selected from the Grappe, that of 1-naphthol, m-aminophenol, 5-amino-2-methylphenol, 3-methylsulfonylamino-2-methyl-aniline , 3-amino-2-methylamino-6-methoxy-pyridine, 2,6-dimethyl-3-aminophenol, 2,4-di-amino-phenoxyethanol, 2,7-dihydroxy-naphthalene, 6-methyl-1,2 , 3, 4-tetrahydro-quinoxaline, 1,7-dihydroxy-naphthalene, 2-methyl-4-chloro-5-aminophenol, 3,4-methylenedioxyaniline, 2-methyl-resorcinol, 4-chlororesorcinol, 3 , 4-methylenedioxyphenol, 2-amino-3-hydroxypyridine and 2-chloro-6-methyl-3-aminophenol is formed.

10. Oxidation dye according to claim 8 or 9, characterized in that it contains, in addition to the p-aminophenol derivatives according to one of claims 1 to 6, at least one further developer component.

11. Oxidation dye according to spoke 10, characterized in that the further developer component is selected from 2,4,5,6-tetraaminopyrimidine. 4-hydroxy-2,5,6-triaminopyrimidine, 4,5-diamino-l - (2-hydroxyethyl) pyrazole, p-toluenediamine, 2-aminomethyl-4-aminophenol, N, N-bis (2-hydroxyethyl) -p-phenylene diamine, p-phenylene diamine, 2- (2,5-diaminophenyl) ethanol, 3-methyl-p-aminophenol and bis (2-hydroxy-5-aminophenyl) methane.

12. Oxidation coloring agent according to one of claims 8 to 11, characterized in that developer components in an amount of 0.005 to 20 wt .-%, preferably 0.1 to 5 wt .-%, and coupler components in an amount of 0.005 to 20 wt. -%, preferably 0.1 to 5 wt .-%, each based on the entire oxidation colorant, are included.

13. Oxidation dye according to one of claims 8 to 11, characterized in that at least one substantive dye is contained.