FR3083102A1 - PROCESS FOR STRIPPING THE ARTIFICIAL COLOR OF KERATINIC FIBERS WITH PYRIDINIUM SALTS - Google Patents

Abstract

The present invention relates to a method of stripping the artificial color of keratin fibers such as the hair with particular pyridinium salts, as well as the use of particular pyridinium salts for stripping the artificial color of human keratin fibers such as hair.

Description

© PROCESS FOR STRIPPING THE ARTIFICIAL COLOR OF KERATINIC FIBERS WITH PYRIDINIUM SALTS.

@) The present invention relates to a process for stripping the artificial color of keratin fibers such as the hair with particular pyridinium salts, as well as the use of particular pyridinium salts for stripping the artificial color of human keratin fibers such than hair.

FR 3 083 102 - A1

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Process for pickling the artificial color of keratin fibers with pyridinium salts

The present invention relates to a process for stripping the artificial color of human keratin fibers such as the hair, using a composition comprising one or more particular pyridinium salts as well as the use of a composition comprising one or more pyridinium salts individuals for stripping the artificial color of human keratin fibers such as the hair.

Many people have long sought to change the color of their hair, and in particular to mask their gray hair.

It is known to dye keratin fibers, in particular human keratin fibers such as the hair, in order to obtain so-called “permanent” dyes with dye compositions containing oxidation dye precursors, generally called oxidation bases, such as ortho- or paraphenylenediamines, ortho- or para-aminophenols or heterocyclic compounds such as pyrazoles, pyrazolinones or pyrazolo-pyridines. These oxidation bases are colorless or weakly colored compounds which, associated with oxidizing products, can give rise, through an oxidative condensation process, to colored compounds.

It is also known that the shades obtained with these oxidation bases can be varied by associating them with couplers or color modifiers, the latter being chosen in particular from aromatic meta-diamines, meta-aminophenols, meta- diphenols and certain heterocyclic compounds such as indole or pyridine compounds. The variety of molecules involved in the oxidation bases and couplers allows a rich palette of colors to be obtained.

The second type of coloration is the so-called semipermanent coloration or direct coloration, which consists in applying to the keratin fibers direct dyes which are colored and coloring molecules having an affinity for said fibers, to let them stand, then to rinse them.

In order to achieve these colorations, the direct dyes generally used are chosen from benzene, anthraquinone, nitropyridine, azo, xanthene, acridine, azine or triarylmethane direct dyes, and natural dyes.

To vary the shades obtained in oxidation coloring, or to enrich them with reflections, oxidation dyes can be used in combination with direct dyes.

By "direct dye" is meant natural and / or synthetic dyes, different from oxidation dyes. These are dyes that will diffuse superficially on the fiber and color the fibers by themselves.

The direct dye (s) can be natural or synthetic, cationic, anionic or non-ionic direct dyes.

By “natural dyes”, or “of natural origin” is meant dyes derived from natural materials (vegetable, mineral or animal origin) such as for example extracts, grinds, decoctions, and more or less concentrated in dyes.

Among the natural dyes, one includes the compounds which can be present in nature and which are reproduced by (hemi) chemical synthesis.

The natural dyes can in particular be chosen from spinulosin, orceins, polyphenols or orthodiphenols (also called ODPs in the following description) and all extracts rich in ODPs, curcumin, indole derivatives such as l 'isatin or indole-2,3-dione, indigoids including indigo, phthalocyanines and porphyrins in particular complexed with a metal, glycosylated or non-glycosylated iridoids, chromene dyes, anthraquinone and naphthoquinone dyes such as lawsone or henna, juglone, spinulosin, chromenic or chromanic dyes, such as neoflavanols and neoflavanones, flavanols; and anthocyanidols. It is also possible to use the extracts or decoctions containing these natural dyes and in particular the poultices or plant extracts containing the said dyes.

For various reasons, such as the desire to partially or completely modulate the shade thus imparted to the hair by an oxidation dye, a direct dye, in particular a dye based on natural dyes as described above, or the wish to eliminate this coloring, one may be led to want to partially or completely destroy the dyes thus formed or brought into or on the hair. The artificial color of the keratin fibers is then stripped.

By "artificial color" is meant a color obtained using the two types of coloring described above.

This pickling is generally carried out via processes using oxidizing or reducing systems.

However, the stripping techniques of the prior art which use peroxygenated reagents such as ammonium or alkali metal persulfates, perborates or percarbonates, which are associated at the time of use with an aqueous peroxide composition. 'hydrogen, are often very aggressive and modify the chemical structure of keratin.

This results in poor cosmetic properties of the hair such as difficult detangling, an unpleasant feel or rough and dull hair, but above all by a degradation of the keratin fibers.

This degradation of the fibers is particularly undesirable since it irreversibly deteriorates the physicochemical properties of the hair. These become more porous and therefore more difficult to dry, they have a greater sensitivity to various other hair treatments such as coloring or perm, and have their mechanical properties and their surface properties adversely modified, which translated for example by a reduction in tensile strength or an increase in the coefficient of friction. In addition, existing oxidative solutions, such as persulfates, generate significant discoloration of the fiber, which is not desired by the consumer.

There is therefore a real need to have a method for overcoming these drawbacks.

The Applicant has thus surprisingly discovered that the use of pyridinium salts of formula (I), as defined below, for the stripping of the artificial color of human keratin fibers, preferably of the hair, made it possible to overcome the drawbacks described above.

The subject of the invention is therefore a process for pickling the artificial color of human keratin fibers such as the hair, using a composition comprising one or more pyridinium salts as defined below by formula (I) ·

The subject of the invention is also a process implementing:

a step for coloring human keratin fibers such as the hair using a dye composition comprising one or more dyes chosen from oxidation dyes and / or direct dyes, in particular from natural direct dyes such as henna,

- A step of etching the artificial color of said fibers using a composition comprising one or more pyridinium salts of formula (I) as defined below.

The invention finally relates to the use of a composition comprising one or more pyridinium salts of formula (I) as defined below, for the stripping of the artificial color of human keratin fibers such as the hair.

Other objects, characteristics, aspects and advantages of the invention will appear even more clearly on reading the description and the examples which follow.

In what follows, and unless otherwise indicated, the limits of a range of values are included in this range, in particular in the expressions "between" and "going from ... to ...".

The expression "at least one" used in the present description is equivalent to the expression "one or more".

By stripping of the artificial color of human keratin fibers such as the hair, is meant within the meaning of the present invention the elimination of the artificial color of human keratin fibers such as the hair, previously colored with a composition of oxidation dyeing and / or direct dyeing, in particular using a composition comprising a natural direct dye such as henna.

The stripping process differs from a bleaching or lightening process for keratin fibers such as the hair, which aims to degrade the melanin pigments of the hair.

In the context of the invention, one or more compounds of formula (I) as well as their addition salts and / or their solvates are used for the stripping of the artificial color of human keratin fibers, such as the hair: formula ( I)

in which :

• R ¹ , R ² , R ³ , R ⁴ and R ⁵ , identical or different, represent:

- a hydrogen atom or a halogen atom,

a linear or branched C 1 -C 10 alkyl radical, optionally substituted by one or more hydroxy, C 1 -C 10 alkoxy, C 1 -C 4 hydroxyalkyl and -NR ⁷ R ^{8 groups} ,

a linear or branched C1-C10 alkoxy radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy, C1-C4 hydroxyalkyl and -NR ⁷ R ^{8 groups} ,

- a radical -CO2R ⁹ , or

- a radical -COR ¹⁰ , • or two adjacent radicals R ¹ and R ² , R ² and R ³ , R ³ and R ⁴ and / or R ⁴ and R ⁵ can form together with the carbon atoms to which they are attached a cycloalkyl group comprising from 5 to 10 members or an aryl group comprising from 6 to 10 members, it being understood that said cycloalkyl or aryl group optionally comprises one or more heteroatoms and is optionally substituted by one or more halogen atoms, one or more radicals linear or branched C1-C10 alkyls, one or more linear or branched C1C10 alkoxy radicals, one or more hydroxy groups, one or more C1-C4 hydroxyalkyl radicals and one or more groups -NR ⁷ R ⁸ ;

• ALK represents a C1-C10 alkyl radical, linear or branched, saturated or unsaturated;

• R ⁶ represents:

- a hydrogen atom or a halogen atom,

a linear or branched, saturated or unsaturated C1-C10 alkyl radical, optionally interrupted by one or more heteroatoms chosen from oxygen and nitrogen and / or optionally substituted by one or more hydroxy, C1-C10 alkoxy groups , C1-C4 hydroxyalkyl and -NR ⁷ R ⁸ ,

an aryl radical comprising from 5 to 12 members optionally substituted by one or more halogen atoms, one or more alkyl radicals in C1-C10, linear or branched, one or more alkoxy radicals in Ci-Cio, linear or branched, a or more hydroxy groups, one or more C1-C4 hydroxyalkyl radicals and one or more -NR ⁷ R ^{8 groups} ;

• X represents a heteroatom chosen from an oxygen atom or a sulfur atom, or a radical -NR ¹¹ ;

• R ⁷ , R ⁸ , R ⁹ , R ¹⁰ and R ¹¹ denote, identical or different, a hydrogen atom or a C1-C10 alkyl radical, linear or branched, optionally substituted by one or more hydroxy, alkoxy groups C1-C10, C1-C4 hydroxyalkyl and amino;

• it being understood that one of the substituents Ri or R5 can form, with the substituent Rr, a heterocycle comprising from 5 to 8 members optionally substituted in particular by one or more oxo groups;

• Q represents an anion or a mixture of organic or inorganic anions ensuring the electroneutrality of the compounds of formula (I) ·

By “anion or mixture of anions ensuring the electroneutrality of the compounds of formulas (I)”, is meant an anion or an anionic group derived from organic or inorganic acid salt counterbalancing the cationic charge of the compound; more particularly the anionic counterion is chosen from i) halides such as chloride, bromide; ii) nitrates; iii) sulfonates including Ci-C6 alkylsulfonates: Alk-S (0) 20 'such as methylsulfonate or mesylate and ethylsulfonate; iv) arylsulfonates: Ar-S (0) 20 'such as benzenesulfonate and toluenesulfonate or tosylate; v) citrate; vi) succinate; vii) tartrate; viii) lactate; ix) alkyl sulphates: Alk-OS (O) O such as methysulphate and ethyl sulphate; x) arylsulfates: Ar-OS (O) O such as benzenesulfate and toluenesulfate; xi) alkoxysulfates: Alk-OS (O) 2O such as methoxy sulfate and ethoxysulfate; xii) aryloxysulfates: Ar-OS (O) 2O, xiii) phosphates O = P (OH) 2-O ', O = P (O) ₂ -OH O = P (O) 3, HO- [P ( O) (O)] wP (O) (O) 2 with w being an integer; xiv) acetate; xv) triflate; and xvi) borates such as tetrafluoroborate, xvii) disulfate (0 =) 28 (0) 2 or SO4 ² 'and monosulfate HSO4 ·, xviii) carbonate CCL ² ' or hydrogen carbonate HCCL '; the anionic counterion, derived from an organic or mineral acid salt, ensures the electroneutrality of the molecule, so it is understood that when the anion comprises several anionic charges then the same anion can serve for the electroneutrality of several cationic groups in the same molecule or can be used for the electroneutrality of several molecules.

Q represents an anion or a mixture of organic or inorganic anions ensuring the electroneutrality of the compounds of formula (I).

Preferably, Q is an anion chosen from halides, in particular chloride, bromide and iodide, sulfates, phosphates; carbonate; hydrogen carbonate; methanesulfonate; paratoluenesulfonate; camphresulfonate; tartrate; citrate; lactate and acetate.

More preferably, Q is an anion chosen from paratoluenesulfonate and halides, in particular chloride.

Preferably, X represents an oxygen atom.

Preferably, ALK represents a linear C1-C10 alkylene radical, a linear C2-C10 alkenylene radical or a linear C2-C10 alkylnylene radical.

Preferably, ALK represents a linear C1-C10 alkylene radical, more preferably a linear C1-C4 alkylene radical, in particular a methylene group (-CH2-).

Preferably, R ¹ and R ⁵ represent:

- a hydrogen atom, or

- a C1-C4 alkyl radical, such as methyl.

Preferably, R ² and R ⁴ , identical or different, represent:

- a hydrogen atom,

a linear or branched C1-C10 alkyl radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy groups and -NR ⁷ R ⁸ with R ⁷ and R ⁸ having the definition previously indicated in formula (I) ,

a linear or branched C1-C10 alkoxy radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy groups, and -NR ⁷ R ⁸ with R ⁷ and R ⁸ having the definition previously indicated in the formula ( I),

- a radical -CO2H,

- A radical -CO2R ⁹ , with R ⁹ having the definition previously indicated in formula (I), or a radical -COR ¹⁰ with R ¹⁰ having the definition previously indicated in formula (I).

More preferably, R ² and R ⁴ represent a hydrogen atom or a linear C1-C4 alkyl radical, in particular a methyl radical.

Preferably, R ³ represents: a hydrogen atom,

a linear or branched C2-C10 alkyl radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy groups and -NR ⁷ R ⁸ with R ⁷ and R ⁸ having the definition previously indicated in formula (I) ,

- a C1-C10 alkoxy radical, linear or branched, optionally substituted by one or more hydroxy, C1-C10 alkoxy, C1-C4 hydroxyalkyl and -NR ⁷ R ⁸ with R ⁷ and R ⁸ having the definition indicated above in formula (I),

- A radical -CO2R ⁹ with an R ⁹ having the definition previously indicated in the formula (I), and a radical -COR ¹⁰ with R ¹⁰ having the definition previously indicated in the formula (I).

More preferably, R ³ represents a hydrogen atom or a radical -COR ¹⁰ with R ¹⁰ denoting a linear C 1 -C ¹⁰ alkyl radical, in particular a linear C 1 -C 4 alkyl radical.

Even more preferably, R ³ represents a hydrogen atom or a -COCH3 radical.

Preferably, R ⁶ represents:

a hydrogen atom, a linear C1-C10 alkyl radical, a linear C2-C10 alkenyl radical or a linear C2-C10 alkylnyl radical optionally interrupted by one or more heteroatoms chosen from oxygen and nitrogen and / or optionally substituted by one or more hydroxy, C1-C10 alkoxy, C1-C4 hydroxyalkyl and -NR ⁷ R ⁸ with R ⁷ and R ⁸ having the definition previously indicated in formula (I).

More preferably, R ⁶ represents a linear C1-C6 alkyl radical and more particularly a linear C1-C4 alkyl radical such as methyl or ethyl, more preferably methyl.

Preferably, R ⁷ , R ⁸ , R ⁹ and R ¹⁰ , identical or different, denote a C1-C10 alkyl radical, linear or branched, optionally substituted by one or more hydroxy, C1-C10 alkoxy and amino groups.

More preferably, R ⁷ , R ⁸ , R ⁹ and R ¹⁰ , identical or different, denote a linear C1-C4 alkyl radical.

Preferably, Ru represents a hydrogen atom.

According to one embodiment, R ¹ , R ² , R ³ , R ⁴ and R ⁵ represent a hydrogen atom.

According to another embodiment, R ¹ and R ⁵ represent a hydrogen atom or a C1-C4 alkyl radical, in particular a methyl radical, R ² and R ⁴ represent a hydrogen atom or a linear C1-alkyl radical -C4, in particular a methyl radical, R ³ represents a hydrogen atom or a radical -COR ¹⁰ with R ¹⁰ denoting a linear C1-C4 alkyl radical, R ⁶ represents a linear C1-C6 alkyl radical, in particular a linear C1-C4 alkyl radical.

According to this embodiment, X is preferably an oxygen atom.

In accordance with this embodiment, ALK represents a linear C1-C10 alkylene radical, more preferably a linear C1-C4 alkylene radical, in particular a methylene group (-CH2-).

In a particular embodiment, the pyridinium salts used in the pickling process of the invention are particular compounds of formula (II) as well as their addition salts and / or their solvates such as hydrates:

formula (II)

ALK ^Q

in which :

• R ¹ and R ⁵ represent a hydrogen atom or a C 1 -C 4 alkyl radical, such as a methyl radical;

• R ² and R ⁴ , identical or different, represent:

- a hydrogen atom,

a linear or branched C1-C10 alkyl radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy groups and -NR ⁷ R ⁸ ,

a C1-C10 linear or branched alkoxy radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy groups, and -NR ⁷ R ⁸ ,

- a radical -CO2H,

- a radical -CO2R ⁹ ,

- a radical -COR ¹⁰ ;

• R ³ represents:

- a hydrogen atom,

a linear or branched C2-C10 alkyl radical, optionally substituted by one or more hydroxy, C1C10 alkoxy and -NR ⁷ R ^{8 groups} ,

a linear or branched C1-C10 alkoxy radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy, C1-C4 hydroxyalkyl and NR ⁷ R ^{8 groups} ,

- a radical -CO2R ⁹ , or

- a radical -COR ¹⁰ ;

• ALK represents a methylene radical;

• R ⁶ represents a methyl radical;

• R ⁷ and R ⁸ , identical or different, denote a hydrogen atom or an alkyl radical in Ci-Cio, linear or branched, optionally substituted by one or more hydroxy, alkoxy CiCio and amino groups;

• R ⁹ and R ¹⁰ , identical or different, denote a C1-C10 alkyl radical, linear or branched, optionally substituted by one or more hydroxy, C1-Cio alkoxy and amino groups;

• Q represents an anion or a mixture of organic or inorganic anions ensuring the electroneutrality of the compounds of formula (Π).

Examples of anions are given above in the description of formula (I).

Preferably, in formula (II), R ² and R ⁴ , which are identical or different, represent a hydrogen atom or a linear C1-C4 alkyl radical, in particular a methyl radical.

Preferably, in formula (II), R ³ represents a hydrogen atom or a radical -COR ¹⁰ with R ¹⁰ denoting a linear C1-C10 alkyl radical, in particular a linear C1-C4 alkyl radical.

Preferably, in formula (II), Q is an anion chosen from paratoluenesulfonate and halides, in particular chloride.

By addition salts of the compounds of formulas (I) and (II) according to the invention is therefore meant addition salts with an organic or mineral acid, and addition salts with an organic or mineral base.

The addition salts of the compounds of formulas (I) and (II) according to the invention are chosen in particular from addition salts with an acid such as hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, methanesulfonates, phosphates and acetates, and addition salts with a base such as sodium hydroxide, potassium hydroxide, ammonia, amines or alkanolamines.

Furthermore, the solvates of the compounds of formulas (I) and (II) according to the invention more particularly represent the hydrates of the said compounds and / or the combination of the said compounds with a linear or branched C1 to C4 alcohol such as methanol, ethanol, isopropanol, n-propanol. Preferably, the solvates are hydrates.

The compound (s) of formula (I) is or are preferably chosen from the following compounds:

salt

- (2-oxopropyl) pyridinium, with Q ’as defined above, preferably: halide such as Cl (compound 1), or arylsulfonate such as toluene-4-sulfonate (compound 2)

4-acetyl-1- (2-oxo-propyl) pyridinium, with Q as defined above, preferably: halide such as Cl '(compound 3) salt

2-methyl-1- (2-oxo-propyl) pyridinium, with Q as defined above, preferably: halide such as Cl ’(compound 4) as well as their mixtures.

Preferably, the compound of formula (I) is a salt of 1 (2-oxo-propyl) pyridinium, the better the compound of formula (I) is l- (2-oxo-propyl) pyridinium chloride (compound 1).

Preferably, the compound (s) of formula (I) and / or their addition salt (s) and / or their solvate (s) is or are used in a proportion ranging from 0.1 to 100% by weight, more preferably from 1 to 50% by weight, better from 2 to 20% by weight, better still from 5 to 15% by weight relative to the total weight of the composition.

The method according to the invention can also use one or more chemical oxidizing agents.

Among the chemical oxidizing agents conventionally used, mention may be made of hydrogen peroxide, the compounds capable of producing hydrogen peroxide by hydrolysis such as urea peroxide, or persalts such as perborates, percarbonates and persulfates, hydrogen peroxide being particularly preferred.

Preferably, the chemical oxidizing agent (s) is or are used in a proportion ranging from 2 to 20% by weight, preferably from 5 to 15% by weight, better still from 7 to 12% by weight relative to the total weight of the composition.

In a preferred embodiment, the method uses one or more chemical oxidants, preferably hydrogen peroxide. According to this embodiment, the process preferably uses a composition C) comprising one or more compounds of formula (I) and / or their addition salts and / or their solvates, and one or more chemical oxidants, preferably hydrogen peroxide. Composition C) can be obtained by mixing at the time of use (extemporaneous mixture) of a composition Cl) comprising one or more compounds of formula (I) and / or their addition salts and / or their solvates, and of a composition C2) comprising one or more chemical oxidants, preferably hydrogen peroxide.

According to the invention, the term “composition ready for use” is used to refer to the composition applied to keratin fibers, such as the hair. The ready-to-use composition may result from the mixture of compositions Cl) and C2) as described above, and corresponding to composition C).

The ready-to-use composition used in the process of the invention preferably comprises the compound (s) of formula (I) and / or their addition salts and / or their solvates in a total content ranging from 0 , 1 to 100% by weight, more preferably from 1 to 50% by weight, better from 2 to 20% by weight, better still from 5 to 15% by weight relative to the total weight of the ready-to-use composition.

The ready-to-use composition may also comprise one or more fatty substances, preferably liquid (s) (or oil (s)).

By “fatty substance” is meant an organic compound insoluble in water at ordinary temperature (25 ° C) and at atmospheric pressure (760 mm Hg) (solubility less than 5% and preferably 1% even more preferably 0.1%). They have in their structure at least one hydrocarbon chain comprising at least 6 carbon atoms or a chain of at least two siloxane groups. In addition, fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, such as, for example, chloroform, ethanol, benzene, petrolatum oil or decamethylcyclopentasiloxane.

By “oil” is meant a “fatty substance” which is liquid at room temperature (25 ° C), and at atmospheric pressure (760 mm Hg or 1.013.105 Pa).

The term "non-silicone oil" means an oil containing no silicon atom (Si) and a "silicone oil" means an oil containing at least one silicon atom.

More particularly, the fatty substances are chosen from C6-C6 hydrocarbons, non-silicone oils (hydrocarbons) with more than 16 carbon atoms, of vegetable, animal, mineral or synthetic origin, triglycerides of vegetable or synthetic origin , fluorinated oils, fatty alcohols, non-salified fatty acids, fatty acid and / or fatty alcohol esters other than triglycerides, non-silicone waxes, different from solid fatty alcohols and solid synthetic esters, silicones , and their mixtures.

It is recalled that within the meaning of the invention, the alcohols, esters and fatty acids more particularly have at least one hydrocarbon group, linear or branched, saturated or unsaturated, comprising 6 to 30 carbon atoms, optionally substituted, in particular by one or more hydroxyl groups (in particular 1 to 4). If unsaturated, these compounds can include one to three carbon-carbon double bonds, conjugated or not.

As Cô-Cô hydrocarbons, mention may especially be made of Cô-Cô alkanes, the latter being linear, branched, possibly cyclic.

Examples include hexane, dodecane, isoparaffins such as isohexadecane, isodecane.

The following compounds can also be mentioned:

- a mixture of branched C15-C16 alkanes, for example that which is marketed by the company SEPPIC under the name EMOGREEN L15;

- A mixture of linear and / or branched C13-C15 alkanes, for example that which is marketed by the company SEPPIC under the name EMOSMART L15.

Hydrocarbon oils with more than 16 carbon atoms can be linear or branched. They can be chosen from paraffin oils, petrolatum, petrolatum oil, polydecenes, hydrogenated polyisobutene such as Parléam®, squalane, squalene and their mixtures,

Among the hydrocarbon oils of vegetable origin, mention may be made of the refined vegetable perhydrosqualene sold under the name fitoderm by the company Cognis; vegetable squalane marketed for example under the name Squalive by the company Biosynthis.

As hydrocarbon oils of animal origin, there may be mentioned perhydrosqualene.

The triglycerides of vegetable or synthetic origin are preferably chosen from liquid triglycerides of fatty acids containing from 6 to 30 carbon atoms, such as the triglycerides of heptanoic or octanoic acids or even, more particularly from those present in vegetable oils such as for example sunflower, corn, soybean, squash, grapeseed, sesame, hazelnut, apricot, macadamia, arara, sunflower, castor, avocado, l jojoba oil, shea butter oil or synthetic triglycerides of caprylic / capric acids such as those sold by the company Stearineries Dubois or those sold under the names Miglyol® 810, 812 and 818 by the company Dynamit Nobel, and their mixtures.

The fluorinated oils can be chosen from perfluoromethylcyclopentane and perfluoro-1,3 dimethylcyclohexane, sold under the names of FLUTEC® PCI and FLUTEC® PC3 by the company BNFL Fluorochemicals; perfluoro-1,2dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the names of PF 5050® and PF 5060® by the company 3M, or even bromoperfluorooctyle sold under the name FORALKYL® by the company Atochem; nonafluoromethoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as 4-trifluoromethyl perfluoromorpholine sold under the name PF 5052® by the company 3M.

The fatty alcohols which are suitable for implementing the invention are more particularly chosen from saturated or unsaturated, linear or branched alcohols, containing from 8 to 30 carbon atoms. Mention may be made, for example, of cetyl alcohol, stearyl alcohol and their mixture (cetylstearyl alcohol), octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleic alcohol linolenic alcohol, ricinoleic alcohol, undecylenic alcohol or linoleic alcohol and their mixtures.

The fatty acids which can be used in the context of the invention are more particularly chosen from carboxylic acids, saturated or unsaturated, containing from 6 to 30 carbon atoms, in particular from 9 to 30 carbon atoms. They are advantageously chosen from myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid and isostearic acid. These fatty acids are in the composition of the invention not salified with organic or mineral bases so as not to give rise to soaps.

With regard to fatty acid and / or fatty alcohol esters, different from the triglycerides mentioned above and vegetable waxes; include in particular esters of mono- or polybasic aliphatic saturated or unsaturated, linear Ci-C26 or branched C ₃ -C 26 mono or saturated or unsaturated aliphatic polyhydric, linear Ci-C26, branched or C ₃ -C26, the total number of carbon of the esters being greater than or equal to 6, more advantageously greater than or equal to 10.

Among the monoesters, mention may be made of dihydroabietyl behenate; octyldodecyl behenate; isocetyl behenate; cetyl lactate; C12-C15 alkyl lactate; isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; (iso) stearyl octanoate; isocetyl octanoate; octyl octanoate; cetyl octanoate; decyl oleate; isocetyl isostearate; isocetyl laurate; isocetyl stearate; isodecyl octanoate; isodecyl oleate; isononyl isononanoate; isostearyl palmitate; acetyl methyl ricinoleate; myristyle stearate; octyl isononanoate; 2-ethylhexyl isononate; octyl palmitate; octyl pelargonate; octyl stearate; octyldodecyl erucate; oleyl erucate; ethyl and isopropyl palmitates, 2-ethylhexyl palmitate, 2-octyldecyl palmitate, alkyl myristates such as isopropyl, butyl, cetyl, 2-octyldodecyl, mirystyle myristate , stearyl hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2hexyldecyl laurate and mixtures thereof.

Still within the framework of this variant, it is also possible to use the esters of C 4 -C 22 di or tricarboxylic acids and C 1 -C 22 alcohols and the esters of mono di or tricarboxylic acids and di, tri alcohols , tetra or pentahydroxy at C2-C26.

Mention may in particular be made of: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyldodecyl stearoyl stearate; pentaerythrityl monoricinoleate; pentaerythrityl teteasononanoate; pentaerythrityl tetrapelargonate; pentaerythrityl tetraisostearate; pentaerythrityl tetraoctanoate; propylene glycol dicaprylate; propylene glycol dicaprate, tridecyl erucate; triisopropyl citrate; triisotearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate, propylene glycol dioctanoate; neopentyl glycol diheptanoate; diethylene glycol diisanonate; and polyethylene glycol distearates and mixtures thereof.

Among the esters mentioned above, it is preferred to use ethyl, isopropyl, myristyl, cetyl, stearyl palmitates, 2-ethylhexyl palmitate, 2-octyldecyl palmitate, alkyl myristates such that isopropyl, butyl, cetyl, 2octyldodecyl myristate, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2hexyldecyl laurate and isononyl isononanate, cetyl octanoate and mixtures thereof.

The composition may also comprise, as fatty ester, esters and di-esters of sugars of C6-C30, preferably C12-C 22 fatty acids. It is recalled that the term “sugar” is understood , oxygenated hydrocarbon compounds which have several alcohol functions, with or without aldehyde or ketone function, and which contain at least 4 carbon atoms. These sugars can be monosaccharides, oligosaccharides or polysaccharides.

Examples of suitable sugars include sucrose (or sucrose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose, and their derivatives. especially alkylated, such as methylated derivatives such as methylglucose.

The sugar and fatty acid esters can be chosen in particular from the group comprising the esters or mixtures of sugar esters described above and of C6-C30, preferably C12-C22 fatty acids, linear or branched, saturated or unsaturated. If unsaturated, these compounds can have one to three carbonecarbon double bonds, conjugated or not.

The esters according to this variant can also be chosen from mono-, di-, tri- and tetra-esters, polyesters and their mixtures.

These esters can be, for example, oleate, laurate, palmitate, myristate, behenate, cocoate, stearate, linoleate, linolenate, caprate, arachidonates, or their mixtures, such as in particular the mixed oleo-palmitate, oleo-stearate, palmito-stearate esters.

More particularly, mono- and di-esters are used and in particular the mono- or di-oleate, stearate, behenate, oleopalmitate, linoleate, linolenate, oleostearate, sucrose, glucose or methylglucose.

By way of example, mention may be made of the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

There may also be mentioned as examples of esters or mixtures of fatty acid sugar esters:

the products sold under the names F160, F140, Fl 10, F90, F70, SL40 by the company Crodesta, respectively designating the sucrose palmitostearates formed from 73% of monoester and 27% of di- and triester, of 61% of monoester and 39% of di-, tri-, and tetra-ester, of 52% of monoester and 48% of di-, tri-, and tetra-ester, of 45% of monoester and% of di-, tri-, and tetra-ester, 39% monoester and 61% di-, tri, and tetra-ester, and sucrose mono-laurate;

- the products sold under the name Ryoto Sugar Esters, for example referenced B370 and corresponding to sucrose behenate formed from 20% monoester and 80% di-triester-polyester;

- the sucrose mono-di-palmito-stearate marketed by the company Goldschmidt under the name Tegosoft® PSE.

The wax or non-silicone waxes other than solid fatty alcohols and solid synthetic esters are chosen in particular from Carnauba wax, Candelila wax, and Alfa wax, paraffin wax, ozokerite, waxes plants such as olive wax, rice wax, hydrogenated jojoba wax or absolute flower waxes such as essential blackcurrant flower wax sold by the company BERTIN (France), animal waxes such as bees, or modified beeswax (cerabellina); other waxes or waxy raw materials which can be used according to the invention are in particular marine waxes such as that sold by the company SOPHIM under the reference M82, polyethylene or polyolefin waxes in general.

The fatty substance (s) do not comprise a C2-C3 oxyalkylenated unit. Preferably they do not contain a glycerolated motif. More particularly, fatty substances are different from fatty acids.

More particularly, the fatty substances are chosen from compounds which are liquid or pasty at room temperature and at atmospheric pressure.

Preferably, the fatty substance is a liquid compound at the temperature of 25 ° C and at atmospheric pressure, or oil.

According to a preferred variant, the fatty substances are not silicone.

The fatty substances are preferably chosen from C6-Ci6 hydrocarbons, hydrocarbon oils with more than 16 carbon atoms, of plant, animal, mineral or synthetic origin, triglycerides of plant or synthetic origin, fatty alcohols, fatty acid and / or fatty alcohol esters, or mixtures thereof.

Preferably, the fatty substance is chosen from linear or branched hydrocarbon oils, of mineral or synthetic origin, of more than 16 carbon atoms or their mixtures, such as, for example, petrolatum oil.

When the ready-to-use composition used in the process of the invention comprises one or more fatty substances, preferably liquid, their total content preferably varies from 1 to 90% by weight, more preferably from 10 to 80% by weight, better from 20 to 70%, even more preferably from 25 to 60%, better still from 35 to 65% by weight relative to the total weight of the ready-to-use composition.

The ready-to-use composition may further comprise one or more surfactants, preferably one or more nonionic surfactants. Preferably the nonionic surfactant (s) are chosen from oxyalkylenated (OA), preferably oxyethylenated nonionic surfactants.

According to a particular embodiment, the ready-to-use composition comprises at least one nonionic oxyalkylenated (OA) surfactant comprising a number of OA units ranging from 1 to 9 and at least one nonionic oxyalkylenated (OA) surfactant comprising at least 10 OA patterns.

The weight ratio, in the composition of the invention, of the amount of nonionic surfactant (s) oxyalkylenated (s) comprising a number of OA units ranging from 1 to 9 on the amount of nonionic surfactant (s) (s) oxyalkylenated (s) comprising at least 10 OA units, is greater than 1, preferably greater than or equal to 1.2, better greater than or equal to 1.5, even better still greater than or equal to 2.

Preferably, the oxyalkylenated nonionic surfactants according to the invention are chosen from oxyethylenated nonionic surfactants.

Preferably, according to this embodiment, the ready-to-use composition according to the invention comprises at least one oxyethylenated non-ionic surfactant (OE) comprising a number of OE units ranging from 1 to 9 and at least one oxyethylenated nonionic surfactant (OE) comprising at least 10 OE motifs.

The weight ratio, in the ready-to-use composition of the invention, of the amount of non-ionic surfactant (s) oxyethylenated (s) comprising a number of EO units ranging from 1 to 9 over the amount of surfactant (s) non-ionic (s) oxyethylenated (s) comprising at least 10 EO units, is greater than 1, preferably greater than or equal to 1.2, better greater than or equal to 1.5, even better still greater than or equal to 2 .

This weight ratio can range for example from 1.2 to 15 better from 1.5 to 10 even better from 2 to 5.

The oxyethylenated nonionic surfactants comprising a number of OE units ranging from 1 to 9 and the oxyethylenated nonionic surfactants comprising at least 10 OE units can be chosen from the following categories:

• oxyethylenated alkyls (Cs-C 24) phenols, • fatty alcohols C8-C30, preferably C12-C22, saturated or not, linear or branched, oxyethylenated, • amides, C8-C30, saturated or unsaturated , linear or branched, oxyethylenated, • esters of C8-C30 acids, saturated or not, linear or branched, and of polyethylene glycols, • esters of C8-C30 acids, saturated or unsaturated, linear or branched, and of polyoxyethylenated sorbitol, • oxyethylenated vegetable oils, saturated or unsaturated, and their mixtures.

Preferably the oxyethylenated nonionic surfactant comprising at least 10 EO units and the oxyethylenated nonionic surfactant comprising from 1 to 9 EO units are chosen from CsC3 fatty alcohols, oxyethylenated, preferably C12-C22, better C14-C20, saturated or unsaturated, linear or branched, preferably linear, such as cetyl alcohol, oleic alcohol, oleocetyl alcohol, behenyl alcohol, cetearyl alcohol, stearyl alcohol, and mixtures thereof, and more preferably stearyl alcohol.

Preferably used as oxyethylenated nonionic surfactant comprising from 1 to 9 EO units, oxyethylenated nonionic surfactants comprising from 2 to 8, preferably from 2 to 4 EO units, such as for example oxide oxide adducts ethylene and stearyl alcohol such as stearyl alcohol 2 EO (name CTFA steareth-2).

Oxyethylenated nonionic surfactants comprising at least 10 EO units used in the invention may in particular have a number of oxyethylene groups ranging from 10 to 50, preferably from 15 to 30 and better still from 15 to 25, such as for example the products of addition of ethylene oxide and stearyl alcohol such as stearyl alcohol 20 EO (name CTFA steareth-20).

The content of nonionic surfactant (s) oxyalkylenated, preferably oxyethylenated (s) comprising from 1 to 9 oxyalkylenated units, preferably oxyethylene in the ready-to-use composition according to the invention can range from 0.5 to 15% by weight, preferably from 1 to 10% by weight and better still from 2 to 6% by weight relative to the total weight of the composition.

The content of non-ionic oxyalkylenated, preferably oxyethylenated surfactants comprising at least 10 oxyalkylenated groups, preferably oxyethylene, in the ready-to-use composition according to the invention can range from 0.1 to 15% by weight, preferably from 0 , 5 to 10% by weight, better still 1 to 5% by weight relative to the total weight of the composition.

The total amount of oxyalkylenated, preferably oxyethylenated, nonionic surfactants in the ready-to-use composition may range from 1 to 25% by weight, preferably from 2 to 15% by weight and better still from 3 to 7% by weight. relative to the total weight of the composition.

The ready-to-use composition used in the process of the invention generally comprises water. When the composition is aqueous, the water content can vary from 10 to 95%, preferably from 20 to 70%, better still from 20 to 50% by weight relative to the ready-to-use composition.

The composition comprising one or more compounds of formula (I) and (II) and / or their addition salts and / or their solvates can comprise one or more additional ingredients chosen from ionic liquids, organic solvents, anionic surfactants, cationic, non-ionic different from those listed above, and amphoteric, cationic, anionic, non-ionic, amphoteric polymers or their mixtures, dandruff agents, antiseborrhoeic agents, hair loss and / or regrowth agents, vitamins and pro-vitamins including panthenol, sunscreens, mineral or organic pigments, sequestering agents, plasticizing agents, solubilizing agents, acidifying agents, mineral or organic thickening agents, in particular polymeric thickening agents, opacifiers or pearlescent agents, antioxidants, hydroxy acids, perfumes, preservatives, pigm ents and ceramides

Another object of the invention is a process for stripping the artificial coloring of human keratin fibers, such as the hair, which comprises the steps consisting of:

- to mix, immediately before use, one or more compounds of formula (I) defined above, and / or their addition salts and / or their solvates, with a composition comprising one or more chemical oxidizing agents, preferably peroxide hydrogen,

- applying the mixture obtained to the human keratin fibers to be stripped,

- leave to stand for a sufficient time, for example between 1 minute and 1 hour, preferably between 5 and 50 minutes, more preferably between 15 and 45 minutes, to obtain the desired pickling, and

- Remove the stripper mixture by rinsing with water, possibly followed by washing with a shampoo, then optionally drying.

Another object of the invention is a process implementing:

a step for coloring human keratin fibers such as the hair using a dye composition comprising one or more dyes chosen from oxidation dyes, and / or direct dyes, in particular from natural direct dyes such as that henna,

a step of etching the artificial color of said fibers using a composition comprising one or more compounds of formula (I) and / or their addition salts and / or their solvates as described above, preferably in presence of one or more chemical oxidants, preferably hydrogen peroxide.

According to this embodiment, the method preferably uses a composition C) as defined above.

The invention finally relates to the use of a composition comprising one or more compounds of formula (I) and / or their addition salts and / or their solvates as described above of the artificial color of human keratin fibers such that hair

The examples which follow serve to illustrate the invention without, however, being limiting in nature.

EXAMPLES

Example 1

The following oxidizing composition A was prepared from the following ingredients in the following proportions indicated in% by weight of product relative to the total weight of the composition in Table 1:

Table 1

Oxidizing composition A % in weight White mineral oil 50 Oxyethylenated stearyl alcohol (2 ethylene oxide units (or 2 EO)) 3.5 Oxyethylenated stearyl alcohol (20 EO) 1.5 Vitamin E 0.2 Tetra-sodium pyrophosphate, 10 H2O 0.04 Etidronic acid, tetrasodium salt in aqueous solution at 30% by weight 0.2 Sodium salicylate 0,035 Hydrogen peroxide 50% solution (hydrogen peroxide 200 Vol) 18 Water Qs 100

A henna powder from Morocco was mixed with water in a weight ratio of 1: 3 at a temperature of 50 ° C.

The mixture was then applied to a lock of natural hair 90% white in a 5: 1 bath ratio, then the lock was wrapped in cellophane and allowed to stand for 1 hour on a plate at 33 ° C.

The lock was then rinsed, washed with shampoo, and then dried.

g. of 1- (2-oxo-propyl) pyridinium chloride (compound 1 according to the invention) were mixed with 90 of oxidizing composition A. This mixture was then applied to the wick for 30 minutes, at a rate of 10 g. of mixture for 1 g of hair, at a temperature of 40 ° C.

The wick was then rinsed, then shampooed and dried.

Example 2 (comparative example)

The following oxidizing composition B was prepared from the following ingredients in the following proportions indicated in% by weight of product relative to the total weight of the composition in Table 2:

Table 2

Oxidizing composition B % in weight Sodium persulfate 33 Potassium persulfate 20 Ethylene diamine tetracetic acid 1 Carboxymethylcellulose sodium 4 Sodium lauryl sulfate powder 14 Overseas blue (CI 77007) 0.5 Strontium peroxide H, 5 Anhydrous sodium metasililcate 9 Ammonium chloride 5 Mixture of di (2-ethylhexyl) sulfosuccinate, monodic salt / sodium benzoate 2

Another lock, previously colored with henna in the same manner as that indicated in Example 1, was subjected to pickling using the oxidizing composition B mixed with hot water in a weight ratio 1: 2, for 30 minutes at a temperature of 33 ° C. 10 g. of mixture were applied to 1 g of lock of hair. The wick was then rinsed, then shampooed and dried.

Example 3 (Estimation of lightening)

In order to highlight the impact of each of the processes on the melanin pigments of the hair, natural brown locks (pitch 4, HT4), which were not colored, were treated either with the process of Example 1 using the compound 1 according to the invention, either with the method of Example 2 using the oxidizing composition B. This estimation was carried out on strands not artificially colored so that the effect is not masked by the coloring.

The color of the locks treated in Examples 1, 2 and 3 was then evaluated with a SF600X Datacolor spectrocolorimeter (illuminant D65, angle 10 °, specular component included) in the CIELab system.

In this L * a * b * system, the three parameters respectively designate the color intensity (L *), a * indicates the green / red color axis and b * the blue / yellow color axis. The higher the value of L *, the lighter the color.

In the case of stripping the previously colored locks of Examples 1 and 2, the variation in color between the colored locks of hair and the locks of hair after stripping is defined by the parameter AEab * and is calculated according to the following equation 1:

Equation 1

ΔΕ _αό * = 7 (L * - L _o *) ² + (a * - a0 *) ² + (b * - b0 *) ²

In this equation 1, the parameters L *, a * and b * represent the values measured on the locks of hair after stripping with:

- the compound 1 of the invention associated with the oxidizing composition A or

- the oxidizing composition B mixed with water, and the parameters Lo *, ao * and bo * represent the values measured on the locks of hair colored with the Movida dye.

The higher the value of AEab *, the better the stripping of the keratin fibers.

In the case of the treatment of natural brown locks of example 3, the variation in color between the natural locks of hair and the locks of hair after treatment defined by the parameter ΔΕ ’and is calculated according to equation 2 below: Equation 2

ΔΕ- = J (L '· - L' ₀ *) 2 + (a '* - a' ₀ *) 2 + (b '* - b' ₀ *) 2.

In this equation 2, the parameters L ’*, a’ * and b ’* represent the values measured on the locks of hair after treatment with:

- the compound 1 of the invention associated with the oxidizing composition A or

- the oxidizing composition B mixed with water, and the parameters L’o *, a’o * and b’o * represent the values measured on natural brown locks.

The lower the value of ΔΕ, the less the wick is thinned, which corresponds to less degradation of the melanin pigments.

The results are collated in Table 3 below.

Table 3

AEab * (compared to colored wick with henna) ΔΕ ' (compared to wick HT4) Compound 1 + composition A 19.1 8.8 Composition B + water 4.8 11.3

The process using compound 1 according to the invention leads to a higher AEab * value, therefore to better pickling compared to the comparative process, on the previously colored locks.

Furthermore, the treatment carried out with compound 1 on natural locks leads to a lower value of ΔΕ ’, therefore to less degradation of the melanin pigments of the hair compared to the comparative treatment.

Claims (15)

1. Process for stripping the artificial color of human keratin fibers such as the hair, using a composition comprising one or more compounds of formula (I) and / or their addition salts and / or their solvates: formula ( I) in which : • R ¹ , R ² , R ³ , R ⁴ and R ⁵ , identical or different, represent: - a hydrogen atom or a halogen atom, a linear or branched C 1 -C 10 alkyl radical, optionally substituted by one or more hydroxy, C 1 -C 10 alkoxy, C 1 -C 4 hydroxyalkyl and -NR ⁷ R ^{8 groups} , a linear or branched C1-C10 alkoxy radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy, C1-C4 hydroxyalkyl and -NR ⁷ R ^{8 groups} , - a radical -CO2R ⁹ , or - a radical -COR ¹⁰ ; • or two adjacent radicals R ¹ and R ² , R ² and R ³ , R ³ and R ⁴ and / or R ⁴ and R ⁵ may form, together with the carbon atoms to which they are attached, a cycloalkyl group comprising from 5 to 10 members or an aryl group comprising from 6 to 10 members, it being understood that said cycloalkyl or aryl group optionally comprises one or more heteroatoms and is optionally substituted by one or more halogen atoms, one or more linear or branched Ci-Cio alkyl radicals, one or more linear or branched CiCio alkoxy radicals, one or more hydroxy groups, one or more C1-hydroxyalkyl radicals -C4 and one or more groups -NR ⁷ R ⁸ ; • ALK represents a C1-C10 alkyl radical, linear or branched, saturated or unsaturated; • R ⁶ represents: - a hydrogen atom or a halogen atom, a linear or branched, saturated or unsaturated C1-C10 alkyl radical, optionally interrupted by one or more heteroatoms chosen from oxygen and nitrogen and / or optionally substituted by one or more hydroxy, C1-C10 alkoxy groups , C1-C4 hydroxyalkyl and -NR ⁷ R ⁸ , an aryl radical comprising from 5 to 12 members optionally substituted by one or more halogen atoms, one or more linear or branched C1-C10 alkyl radicals, one or more linear or branched C1-C10 alkoxy radicals, a or more hydroxy groups, one or more C1-C4 hydroxyalkyl radicals and one or more -NR ⁷ R ^{8 groups} ; • X represents a heteroatom chosen from an oxygen atom or a sulfur atom, or a radical -NR ¹¹ ; • R ⁷ , R ⁸ , R ⁹ , R ¹⁰ and R ¹¹ denote, identical or different, a hydrogen atom or a C1-C10 alkyl radical, linear or branched; optionally substituted with one or more hydroxy, C1-C10 alkoxy, C1-C4 hydroxyalkyl and amino groups; • it being understood that one of the substituents Ri or R5 can form, with the substituent R6, a heterocycle comprising from 5 to 8 members optionally substituted in particular by one or more oxo groups; • Q represents an anion or a mixture of organic or inorganic anions ensuring the electroneutrality of the compounds of formula (I) · 2. Method according to claim 1, characterized in that X represents an oxygen atom. 3. Method according to claim 1 or 2, characterized in that ALK represents a linear C 1 -C 10 alkylene radical, a linear C 2 -C 10 alkenylene radical or a linear C 2 -C 10 alkylnylene radical. 4. Method according to any one of the preceding claims, characterized in that the radicals R ¹ and R ⁵ represent a hydrogen atom or a C1-C4 alkyl radical such as a methyl radical. 5. Method according to any one of the preceding claims, characterized in that the radicals R ² and R ⁴ , which are identical or different, represent a hydrogen atom or a linear C1-C4 alkyl radical, in particular a methyl radical. 6. Method according to any one of the preceding claims, characterized in that R ³ represents a hydrogen atom or a radical -COR ¹⁰ with R ¹⁰ denoting a linear C1-C10 alkyl radical, in particular a linear alkyl radical in C1-C4. 7. Method according to any one of the preceding claims, characterized in that R ⁷ , R ⁸ , R ⁹ and R ¹⁰ , identical or different, denote a C1-C10 alkyl radical, linear or branched, optionally substituted by one or several hydroxy, C1-C10 alkoxy and amino groups. 8. Method according to any one of claims 1 to 4, characterized in that the compound or compounds of formula (I) are chosen from the compounds of formula (II) as well as their addition salts and their solvates: formula (II) in which : • R ¹ and R ⁵ represent a hydrogen atom or a C1-C4 alkyl radical such as a methyl radical; • R ² and R ⁴ , identical or different, represent: - a hydrogen atom, a linear or branched C1-C10 alkyl radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy groups and -NR ⁷ R ⁸ , a linear or branched C1-C10 alkoxy radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy groups, and-NR ⁷ R ⁸ , - a radical -CO2H, - a radical -COR ⁹ , or - a radical -COR ¹⁰ ; • R ³ represents: - a hydrogen atom, a linear or branched C2-C10 alkyl radical, optionally substituted by one or more hydroxy, C1C10 alkoxy and -NR ⁷ R ^{8 groups} , a linear or branched C1-C10 alkoxy radical, optionally substituted by one or more hydroxy, C1-C10 alkoxy, C1-C4 hydroxyalkyl and -NR ⁷ R ^{8 groups} , - a radical -CO2R ⁹ , or - a radical -COR ¹⁰ ; • ALK represents a methylene radical; • R ⁶ represents a methylene radical; • R ⁷ and R ⁸ , identical or different, denote a hydrogen atom or an alkyl radical in Ci-Cio, linear or branched, optionally 5 substituted by one or more hydroxy, C 1 -C 10 alkoxy and amino groups; • R ⁹ and R ¹⁰ , identical or different, denote a C1-C10 alkyl radical, linear or branched, optionally substituted by one or more hydroxy, C1-Cio alkoxy and amino groups; 10 · Q represents an anion or a mixture of organic or inorganic anions ensuring the electroneutrality of the compounds of formula (Π). 9. Method according to any one of claims 1 to 3, characterized in that the compound or compounds of formula (I) is or are 15 chosen from the following compounds: Q being as defined in claim 1. 10. Method according to any one of the preceding claims, using one or more chemical oxidizing agents. 11. Method according to claim 10, characterized in that the chemical oxidizing agent is hydrogen peroxide. 12. Method for stripping the artificial coloring of human keratin fibers, such as the hair, using a composition comprising one or more compounds of formula (I) as defined in any one of claims 1 to 9, and / or their addition salts and / or their solvates, and one or more chemical oxidizing agents, preferably hydrogen peroxide. 13. pickling method according to claim 12, characterized in that it comprises the steps consisting in: - to mix, immediately before use, one or more compounds of formula (I), and / or their addition salts and / or their solvates, with a composition comprising one or more chemical oxidizing agents, preferably hydrogen peroxide , - applying the mixture obtained to the human keratin fibers to be stripped, - leave to stand for a sufficient time to obtain the desired pickling, and - to remove the stripper mixture by rinsing with water followed by washing with a shampoo, then drying. 14. Process for treating human keratin fibers such as the hair, using: a step for coloring human keratin fibers such as the hair using a dye composition comprising one or more dyes chosen from oxidation dyes and / or direct dyes, in particular from natural direct dyes such as henna, a step of etching the artificial color of said fibers using a composition comprising one or more compounds of formula (I) as defined in any one of claims 1 to 9 and / or their addition salts and / or their solvates, preferably in the presence of one or more chemical oxidants, preferably hydrogen peroxide. 15. Use of a composition comprising one or more compounds of formula (I) as defined in any one of claims 1 to 9 and / or their addition salts and / or their solvates for pickling color artificial human keratin fibers such as hair.