Composition for brightening keratin fibres and method for brightening keratin fibres using said composition

Abstract

The invention relates to a composition for brightening keratin fibers. The invention relates to a composition comprising at least one chemical oxidizing agent, at least one (hydrogen) carbonate, at least one silicate, at least one compound selected from alkanes and / or olefins and / or ethers and at least one compound selected from alcohols, amphoteric or zwitterionic compounds, esters and / or amides and / or imides, organic amines, organic acids and mixtures thereof, and to a method for brightening keratin fibres using said composition.

Description

Technical Field

[0001] The present invention relates to a composition for lightening keratin fibers, comprising at least one chemical oxidizing agent, at least one (bi)carbonate, at least one silicate, at least one compound selected from alkanes and / or alkenes and / or ethers and at least one compound selected from alcohols, amphoteric or zwitterionic compounds, esters and / or amides and / or imines, organic amines, organic acids and mixtures thereof, and also to a method for lightening keratin fibers using said composition. Background Art

[0002] When a person wishes to change the colour of the hair, especially when he or she wishes to obtain a lighter colour than its original colour, it is often necessary to perform a preliminary lightening or bleaching of the hair. To do this, lightening or bleaching products are used.

[0003] The lightening of hair is evaluated by the "depth of tone" which characterizes the degree or level of lightening. The concept of "tone" is based on a classification of natural shades, a tone separating each shade from the shade immediately behind or before it. This definition and classification of natural shades is well known to hair styling professionals and is disclosed in the book Sciences destraitements capillaires [The Science of Hair Care] by Charles Zviak, 1988, published by Masson, pages 215 and 278.

[0004] The hue scale ranges from 1 (black) to 10 (very light gold), with one integer corresponding to one hue; the higher the number, the lighter the hue.

[0005] It is known practice to lighten or bleach the hair, in the vast majority of cases, under alkaline pH conditions, with a lightening or bleaching composition containing at least one chemical oxidizing agent. The action of this oxidizing agent is to degrade the melanin of the hair, which, depending on the nature of the oxidizing agent present and the pH conditions, results in a more or less pronounced lightening of the fibers. Thus, for relatively mild lightening, the oxidizing agent is generally hydrogen peroxide. When a greater lightening is desired, especially when the hair to be treated is dark, persulfates are generally used in the presence of hydrogen peroxide. However, the lightening obtained by the action of this combination is not always satisfactory, since it produces hair with an unattractive yellow-orange hue that is far from the natural hue, which complicates subsequent coloring by limiting it to the production of warm tones. Moreover, lightening compositions based on persulfates may lead to a deterioration of the fiber quality. Moreover, persulfate-based compositions are generally chemically incompatible with the oxidation dyes and / or direct dyes present, so as to be able to bleach and dye the hair fibers in a single step. Therefore, when it is desired to bleach and dye keratin fibers simultaneously, a two-step process is used, wherein the first step is to bleach the keratin fibers and then the second step is to dye the keratin fibers using a dye composition comprising one or more direct dyes and / or one or more oxidative dyes.

[0006] Therefore, there is a real need to develop a composition that allows an effective lightening of keratin fibers, especially dark keratin fibers, with less yellow and more natural results. Such a composition should also be more respectful of the quality of the fibers, especially by minimizing their degradation. Finally, such a composition should also be compatible with the direct and / or oxidative dyes present, so as to obtain a good color build-up, intense and vivid colors, and also allow a wider range of colors to be obtained.

[0007] The Applicant has surprisingly found that all or some of these objects can be achieved by the composition according to the invention. Summary of the invention

[0008] According to a first aspect, the subject of the present invention is a composition comprising:

[0009] i) one or more chemical oxidants selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts, and mixtures thereof;

[0010] ii) one or more compounds selected from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof, preferably selected from carbonates, bicarbonates and mixtures thereof;

[0011] iii) one or more silicates;

[0012] iv) one or more compounds chosen from compounds consisting of saturated or unsaturated, linear or branched hydrocarbon-based chains containing 1 to 30 carbon atoms, which are optionally substituted by one or more cyclic groups and / or optionally interrupted by one or more non-adjacent oxygen atoms; saturated or unsaturated, optionally aromatic, monocyclic or polycyclic, fused or non-fused carbocyclic compounds containing 3 to 22 carbon atoms, which are optionally substituted by one or more identical or different groups selected from: (C1-C 6) alkyl or (C1-C6)alkenyl or (C1-C6)alkoxy and / or optionally interrupted by one or more carbonyl (CO) groups; monocyclic or polycyclic, fused or non-fused, saturated or unsaturated, especially aromatic heterocyclic compounds, which contain 5 to 22 members and contain 1 to 3 oxygen atoms, optionally substituted by one or more identical or different radicals selected from the group consisting of (C1-C6)alkyl or (C1-C6)alkoxy and / or optionally interrupted by one or more carbonyl (CO) groups and mixtures thereof;

[0013] iv') one or more compounds different from compound iv) selected from:

[0014] a) alcohol;

[0015] b) amphoteric or zwitterionic compounds selected from the group consisting of phospholipids such as lecithin, amino acids, amphoteric or zwitterionic surfactants and mixtures thereof;

[0016] c) esters, amides, imines and mixtures thereof;

[0017] d) organic amines;

[0018] e) organic acids;

[0019] f) and mixtures thereof;

[0020] wherein the composition comprises a total persulfate content of less than 1% by weight.

[0021] According to a second aspect, a subject of the invention is a method for lightening keratin fibres, which method comprises applying to the keratin fibres a composition comprising ingredients i) to iv) and iv′) as previously defined.

[0022] According to a third aspect, the subject of the invention is a process for the simultaneous bleaching and dyeing of keratin fibers, which comprises applying to the keratin fibers a composition comprising ingredients i) to iv) and iv') as previously defined and v) one or more colorants preferably chosen from direct dyes, oxidative dyes and mixtures thereof.

[0023] According to a fourth aspect, a subject of the present invention is the use of a composition comprising ingredients i) to iv) and iv′) as previously defined for lightening keratin fibres, preferably for lightening keratin fibres while simultaneously deyellowing them.

[0024] According to a fifth aspect, a subject of the invention is the use of a composition comprising ingredients i) to iv) and iv') as previously defined and v) one or more colorants preferably chosen from direct dyes, oxidation dyes and mixtures thereof for the simultaneous bleaching and dyeing of keratin fibres.

[0025] According to a sixth aspect, the subject of the invention is a device comprising a plurality of separate compartments (kit), comprising:

[0026] ■ A first compartment containing a composition (A), the composition comprising:

[0027] - one or more chemical oxidants selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts and mixtures thereof, preferably hydrogen peroxide; and

[0028] - optionally one or more compounds iv) as defined previously and / or one or more compounds iv') as defined previously; and

[0029] ■ A second compartment containing a composition (B) comprising:

[0030] - one or more compounds selected from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof, preferably selected from carbonates and bicarbonates and mixtures thereof; and

[0031] - one or more silicates; and

[0032] - optionally one or more colorants, preferably chosen from direct dyes and oxidation dyes and mixtures thereof; and

[0033] - optionally one or more compounds iv) as defined previously and / or one or more compounds iv') as defined previously; and

[0034] ■ A third compartment optionally containing a composition (C) comprising:

[0035] - one or more colorants, preferably chosen from direct dyes and oxidation dyes and mixtures thereof; and

[0036] - optionally one or more compounds iv) as defined previously and / or one or more compounds iv') as defined previously;

[0037] It should be understood that:

[0038] - at least one of compositions (A) or (B) or at least one of compositions (A) or (B) or (C) if composition (C) is present comprises one or more compounds iv) as previously defined; and

[0039] - at least one of the compositions (A) or (B) or at least one of the compositions (A) or (B) or (C) if composition (C) is present comprises one or more compounds iv') as defined previously. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] [ Figure 1 ] is a graph representing the variation of the intensity L* of a composition according to the invention (Example 2) and a comparative composition based on persulfate (Example 1) as a function of the parameter b*, the values ​​of L* and b* being measured in the CIE L*a*b* system. DETAILED DESCRIPTION

[0041] For the purposes of the present invention and unless otherwise indicated:

[0042] ■ The term "keratin fibers" means fibers of human or animal origin, such as hair, body hair, eyelashes, eyebrows, wool, angora wool, cashmere or fur. According to the present invention, the keratin fibers are preferably human keratin fibers, more preferably hair;

[0043] ■The term "alcohol" means an organic compound in which one of the carbon atoms is attached to a -OH hydroxyl group or a phenolic group.

[0044] ■ The term "ester" means a compound comprising at least one ester functional group.

[0045] ■ The term "amide" means a compound comprising at least one amide functional group.

[0046] ■ The term "imine" means a compound comprising at least one imine functional group.

[0047] ■ The term "organic acid" means an organic compound comprising at least one -X(O)OH functional group, wherein X represents a carbon atom or S=O or P-OH, preferably a carbon atom.

[0048] ■ The term "organic amine" means an organic compound containing at least one primary, secondary or tertiary amine functional group.

[0049] ■ The term "salt" means an addition salt with an organic or inorganic acid or base. The addition salt with an acid is especially chosen from the addition salt with an acid, such as hydrochloric acid, hydrobromic acid, sulfuric acid, citric acid, succinic acid, tartaric acid, lactic acid, toluenesulfonic acid, benzenesulfonic acid, phosphoric acid or acetic acid. The addition salt with a base is especially chosen from the addition salt with a base, such as an alkalizing agent as defined below, especially an alkali metal hydroxide, alkaline earth metal hydroxide, ammonia, an amine or an alkanolamine.

[0050] ■The term "alkyl" means a straight-chain or branched saturated hydrocarbon-based group containing 1 to 40 carbon atoms, preferably 1 to 30 carbon atoms, more preferably 1 to 26 carbon atoms, and even more preferably 1 to 22 carbon atoms, such as methyl, ethyl, n-propyl, isopropyl, butyl, n-pentyl, n-hexyl, n-decyl, n-dodecyl, tetradecyl, hexadecyl or eicosyl.

[0051] ■Term "(C x -C y )alkyl" means an alkyl group containing from x to y carbon atoms.

[0052] ■The term "alkenyl" means a straight or branched hydrocarbon-based group containing one or more olefinic unsaturations and 1 to 30 carbon atoms, preferably 1 to 26 carbon atoms, more preferably 1 to 22 carbon atoms, such as ethenyl, n-propenyl, isopropenyl, butenyl, n-pentenyl, n-hexenyl, n-decenyl, n-dodecenyl, tetradecenyl, hexadecenyl or eicosenyl.

[0053] ■Term "(C x -C y The term "alkenyl" refers to an alkenyl group containing from x to y carbon atoms.

[0054] ■The term "alkoxy" means an alkyl group bonded to an oxygen atom.

[0055] ■Term "(C x -C y )alkoxy" means an alkoxy group containing x to y carbon atoms.

[0056] ■ The term "(poly)(hydroxy)alkyl" means alkyl or hydroxyalkyl or polyhydroxyalkyl.

[0057] ■The term "hydroxyalkyl" means an alkyl group substituted with a hydroxy group (-OH);

[0058] ■ The term "polyhydroxyalkyl" means an alkyl group substituted with at least two hydroxyl (-OH) groups.

[0059] ■The term "(poly)hydroxyalkyl" means a hydroxyalkyl group or a polyhydroxyalkyl group.

[0060] ■The term "alkylamino" refers to the group R'-NR a -, wherein R' represents an alkyl group, and R a represents a hydrogen atom or a (C1-C4)alkyl group optionally substituted by one or more groups -X(O)OH, wherein X represents a carbon atom or S=O or P-OH, preferably wherein X represents a carbon atom; R' and R acan form with the nitrogen atom carrying them a saturated or unsaturated cyclic group with 4 to 8 chain members, preferably 5 or 6 chain members, which is optionally substituted, in particular, by one or more identical or different radicals selected from (C1-C4) (poly)hydroxyalkyl or (C1-C4) alkoxy groups.

[0061] ■The term "alkylamide" refers to the group R"-NR a -CO-, wherein R" represents an alkyl group, and R a represents a hydrogen atom or a (C1-C4)alkyl group optionally substituted by one or more groups -X(O)OH, wherein X represents a carbon atom or S=O or P-OH, preferably wherein X represents a carbon atom; R" and R a can form with the nitrogen atom carrying them a saturated or unsaturated cyclic group with 4 to 8 chain members, preferably 5 or 6 chain members, which is optionally substituted, in particular, by one or more identical or different radicals selected from (C1-C4) (poly)hydroxyalkyl or (C1-C4) alkoxy groups.

[0062] ■The term "(hetero)cyclyl" means a cyclic or heterocyclic group.

[0063] ■The term "cyclic group" means a fused or non-fused, saturated or unsaturated, especially aromatic, monocyclic or polycyclic carbocyclic ring containing 6 to 22 carbon atoms, which may be substituted by one or more identical or different groups, especially selected from the following: (C1-C6)alkyl, (C1-C6)alkoxy, (C1-C6)(poly)hydroxyalkyl, hydroxyl (-OH) or carboxyl (-COOH).

[0064] ■The term "heterocyclic group" means a fused or non-fused, saturated or unsaturated, especially aromatic, mono- or polycyclic group having 5 to 22 members and containing 1 to 3 heteroatoms selected from nitrogen, oxygen and sulfur atoms, which heterocyclic group may be substituted by one or more identical or different groups, especially selected from the following groups: (C1-C6)alkyl, (C1-C6)alkoxy, (C1-C6)(poly)hydroxyalkyl, hydroxyl (-OH) or carboxyl (-COOH).

[0065] ■ The term "silicate" means a salt of silicic acid.

[0066] ■ The term "colorant" means oxidation dye, direct dye or pigment.

[0067] ■ The term "oxidation dye" means an oxidation dye precursor selected from oxidation bases and couplers. Oxidation bases and couplers are colorless or slightly colored compounds which form colored species via condensation reactions in the presence of oxidizing agents;

[0068] ■ The term "direct dyes" means natural and / or synthetic dyes other than oxidation dyes, including in the form of one or more extracts. These are colored compounds that will spread on the surface on the fibers. They can be ionic or nonionic, that is, anionic, cationic, neutral or nonionic.

[0069] ■ The term "chemical oxidant" means an oxidant other than atmospheric oxygen.

[0070] Unless otherwise indicated, when a compound is mentioned in the present patent application, this also includes its optical isomers, its geometric isomers, its tautomers, its salts or solvates thereof (such as hydrates), and mixtures thereof.

[0071] The terms "at least one" and "one or more" are synonymous and can be used interchangeably.

[0072] The terms "lightening" and "bleaching" are synonymous and can be used interchangeably.

[0073] Composition

[0074] According to a first aspect, a subject of the present invention is a composition comprising ingredients i) to iv) and iv′) as previously defined.

[0075] The Applicant has surprisingly found that the composition according to the invention allows an effective lightening of keratin fibers, with a less yellow and more natural result. When the color of keratin fibers treated with a composition according to the invention is compared with the color of keratin fibers treated with a lightening composition known in the art, it is observed that at equal intensity levels L*, the b* values ​​measured in the CIE L*a*b* system are lower for the composition according to the invention than for the lightening compositions known in the art.

[0076] Furthermore, the composition according to the invention is more respectful of the qualities of the fibres and in particular minimizes their degradation.

[0077] According to a preferred embodiment, the composition according to the present invention comprises:

[0078] i) hydrogen peroxide;

[0079] ii) one or more compounds selected from carbonates, bicarbonates and mixtures thereof;

[0080] iii) one or more silicates;

[0081] iv) one or more compounds chosen from compounds consisting of saturated or unsaturated, linear or branched hydrocarbon-based chains containing 1 to 30 carbon atoms, which are optionally substituted by one or more cyclic groups and / or optionally interrupted by one or more non-adjacent oxygen atoms; saturated or unsaturated, optionally aromatic, monocyclic or polycyclic, fused or non-fused carbocyclic compounds containing 3 to 22 carbon atoms, which are optionally substituted by one or more identical or different groups selected from: (C1-C 6) alkyl or (C1-C6)alkenyl or (C1-C6)alkoxy and / or optionally interrupted by one or more carbonyl (CO) groups; monocyclic or polycyclic, fused or non-fused, saturated or unsaturated, especially aromatic heterocyclic compounds, which contain 5 to 22 members and contain 1 to 3 oxygen atoms, optionally substituted by one or more identical or different radicals selected from the group consisting of (C1-C6)alkyl or (C1-C6)alkoxy and / or optionally interrupted by one or more carbonyl (CO) groups and mixtures thereof;

[0082] iv') one or more compounds different from compound iv) selected from:

[0083] a) alcohol;

[0084] b) amphoteric or zwitterionic compounds selected from the group consisting of phospholipids such as lecithin, amino acids, amphoteric or zwitterionic surfactants and mixtures thereof;

[0085] c) esters, amides, imines and mixtures thereof;

[0086] d) organic amines;

[0087] e) organic acids;

[0088] f) and mixtures thereof;

[0089] It will be appreciated that the composition comprises a total persulfate content of less than 1% by weight.

[0090] Chemical oxidants

[0091] The composition according to the invention comprises i) one or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts, and mixtures thereof.

[0092] The hydrogen peroxide generating system other than peroxide salts may be selected from urea peroxide, polymer complexes capable of releasing hydrogen peroxide, oxidases and mixtures thereof.

[0093] As examples of polymer complexes which can release hydrogen peroxide, mention may be made of polyvinylpyrrolidone / H2O2, in particular in powder form, and other polymer complexes described in US Pat. No. 5,008,093, US Pat. No. 3,376,110 and US Pat. No. 5,183,901.

[0094] Oxidase enzymes can generate hydrogen peroxide in the presence of a suitable substrate, such as glucose in the case of glucose oxidase or uric acid in the case of uricase.

[0095] According to a particular embodiment, hydrogen peroxide and / or a hydrogen peroxide generating system other than peroxide salts may be incorporated into the composition according to the invention just before applying the composition according to the invention to the keratin fibers. The intermediate composition comprising hydrogen peroxide and / or a hydrogen peroxide generating system other than peroxide salts may be called an oxidizing composition and may also comprise various additional compounds or various auxiliaries conventionally used in compositions for lightening keratin fibers.

[0096] According to a preferred embodiment, the composition according to the invention comprises hydrogen peroxide as chemical oxidizing agent.

[0097] The chemical oxidizing agent is preferably present in the composition in a total content ranging from 1% to 12% by weight, more preferably ranging from 3% to 9% by weight and even more preferably ranging from 3.5% to 8.5% by weight relative to the total weight of the composition.

[0098] According to a preferred embodiment, hydrogen peroxide is present in the composition in a total content ranging from 1% to 12% by weight, preferably ranging from 3% to 9% by weight, more preferably ranging from 3.5% to 8.5% by weight relative to the total weight of the composition.

[0099] Carbonate (bicarbonate) and / or bicarbonate (bicarbonate) generating system

[0100] The composition according to the invention further comprises ii) one or more compounds selected from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof.

[0101] According to a preferred embodiment, the composition according to the present invention further comprises ii) one or more compounds selected from carbonates, bicarbonates and mixtures thereof.

[0102] According to a more preferred embodiment, the composition according to the present invention further comprises ii) one or more compounds selected from ammonium carbonate, ammonium bicarbonate and mixtures thereof.

[0103] Compound ii) is preferably present in the composition in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 15% by weight, more preferably ranging from 2% to 15% by weight, even more preferably ranging from 4% to 15% by weight relative to the total weight of the composition.

[0104] Carbonates and / or carbonate generating systems

[0105] The term "carbonate generating system" means a system that generates carbonates in situ, such as carbon dioxide in water or percarbonate in water.

[0106] Preferably, the carbonate is selected from:

[0107] - alkali metal carbonates;

[0108] - Alkaline earth metal carbonates;

[0109] - lanthanide carbonates;

[0110] - transition metal carbonates;

[0111] - bismuth carbonate;

[0112] - cadmium carbonate;

[0113] - thallium carbonate;

[0114] - zinc carbonate;

[0115] -Formula (N + R 1 R 2 R 3 R 4 )2CO3 2- A compound wherein R 1 , R 2 , R 3 and R 4 independently of one another represent a hydrogen atom or a (C1-C4)alkyl group which is optionally substituted by a hydroxyl group;

[0116] -guanidine carbonate;

[0117] - mixtures thereof.

[0118] More preferably, the carbonate is selected from the group consisting of sodium carbonate, potassium carbonate, cesium carbonate, lithium carbonate, magnesium carbonate, calcium carbonate, barium carbonate, strontium carbonate, cerium carbonate, lanthanum carbonate, yttrium carbonate, copper (II) carbonate, manganese carbonate, nickel carbonate, silver carbonate, zirconium carbonate, bismuth carbonate, cadmium carbonate, thallium carbonate, zinc carbonate, ammonium carbonate, guanidine carbonate, tetraethylammonium carbonate, and mixtures thereof.

[0119] Even more preferably, the carbonate is selected from the group consisting of sodium carbonate, potassium carbonate, cesium carbonate, magnesium carbonate, calcium carbonate, cerium carbonate, manganese carbonate, zinc carbonate, ammonium carbonate, guanidine carbonate and mixtures thereof.

[0120] Most preferably, the carbonate is selected from sodium carbonate, potassium carbonate, magnesium carbonate, calcium carbonate, ammonium carbonate and mixtures thereof.

[0121] According to a particularly preferred embodiment, the carbonate contained in the composition is ammonium carbonate.

[0122] The carbonates and / or carbonate generating systems are preferably present in the composition in a total content ranging from 0.01% to 20% by weight, more preferably ranging from 1% to 20% by weight, and even more preferably ranging from 1% to 10% by weight relative to the total weight of the composition.

[0123] According to a preferred embodiment, the carbonate is present in the composition in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 20% by weight, more preferably ranging from 1% to 10% by weight relative to the total weight of the composition.

[0124] According to a preferred embodiment, compound ii) is selected from carbonates, carbonate generating systems and mixtures thereof, preferably selected from carbonates.

[0125] Bicarbonate and / or bicarbonate generating system

[0126] The term "bicarbonate generating system" means a system that generates bicarbonate in situ, such as carbon dioxide in water or by buffering carbonate with an inorganic or organic acid.

[0127] Preferably, the bicarbonate salt is selected from:

[0128] - alkali metal bicarbonates;

[0129] - alkaline earth metal bicarbonates;

[0130] -Formula N + R 1 R 2 R 3 R 4 HCO3 - A compound wherein R 1 , R 2 , R 3 and R 4 independently of one another represent a hydrogen atom or a (C1-C4)alkyl group which is optionally substituted by a hydroxyl group;

[0131] -aminoguanidine bicarbonate;

[0132] - mixtures thereof.

[0133] More preferably, the bicarbonate salt is selected from the group consisting of sodium bicarbonate, potassium bicarbonate, lithium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate, choline bicarbonate, triethylammonium bicarbonate, aminoguanidine bicarbonate, and mixtures thereof.

[0134] Even more preferably, the bicarbonate salt is selected from sodium bicarbonate, potassium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate and mixtures thereof.

[0135] Most preferably, the bicarbonate salt is selected from sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate and mixtures thereof.

[0136] According to a particularly preferred embodiment, the bicarbonate salt contained in the composition is ammonium bicarbonate.

[0137] The bicarbonate may originate from natural water, for example spring water from the Vichy basin or from La Roche Posay or Badoit water.

[0138] The bicarbonate and / or bicarbonate generating system is preferably present in the composition in a total content ranging from 0.01% to 20% by weight, more preferably ranging from 1% to 15% by weight, even more preferably ranging from 2% to 15% by weight, most preferably ranging from 4% to 15% by weight relative to the total weight of the composition.

[0139] According to a preferred embodiment, the bicarbonate is present in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 15% by weight, more preferably ranging from 2% to 15% by weight, even more preferably ranging from 4% to 15% by weight relative to the total weight of the composition.

[0140] According to a preferred embodiment, compound ii) is selected from bicarbonate, bicarbonate generating system and mixtures thereof, preferably selected from bicarbonate.

[0141] Silicate

[0142] The composition according to the invention also comprises iii) one or more silicates.

[0143] The silicate is preferably water soluble.

[0144] The term "water-soluble silicate" means a silicate having a solubility in water of greater than 0.5% by weight, preferably greater than 1% by weight, at ordinary room temperature (25°C) and atmospheric pressure (760 mmHg).

[0145] Preferably, the silicate is selected from alkali metal silicates, alkaline earth metal silicates, aluminum silicates, trimethylammonium silicate and mixtures thereof.

[0146] More preferably, the silicate is selected from the group consisting of sodium silicate, potassium silicate, calcium silicate, aluminum silicate, trimethylammonium silicate, and mixtures thereof.

[0147] Even more preferably, the silicate is selected from sodium silicate.

[0148] Preferably, the silicate is chosen from compounds having the INCI name sodium silicate (CAS: [1344-09-8]) and / or sodium metasilicate (CAS: [6834-92-0]).

[0149] Silicate is preferably present in the composition in a total content ranging from 1% to 40% by weight, more preferably ranging from 2% to 35% by weight, even more preferably ranging from 3% to 35% by weight, most preferably ranging from 4% to 20% by weight relative to the total weight of the composition.

[0150] The weight ratio of the total amount of carbonates and / or carbonate generating systems / the total amount of silicates is preferably from 0.00025 to 20, more preferably from 0.028 to 10 and even more preferably from 0.028 to 3.4.

[0151] According to a preferred embodiment, the weight ratio of the total amount of carbonates / the total amount of silicates is 0.00025 to 20, preferably 0.028 to 10, more preferably 0.028 to 3.4.

[0152] The weight ratio of total amount of carbonates and / or carbonate generating system / total amount of chemical oxidant is preferably from 0.0008 to 20, more preferably from 0.1 to 6.6 and even more preferably from 0.1 to 2.9.

[0153] According to a preferred embodiment, the weight ratio of the total amount of carbonates / the total amount of chemical oxidants is 0.0008 to 20, preferably 0.1 to 6.6 and more preferably 0.1 to 2.9.

[0154] According to a preferred embodiment, the weight ratio of the total amount of carbonates / the total amount of hydrogen peroxide is 0.0008 to 20, preferably 0.1 to 6.6 and more preferably 0.1 to 2.9.

[0155] The weight ratio of the total amount of bicarbonate and / or bicarbonate generating system / the total amount of silicate is preferably 0.00025 to 20, more preferably 0.02 to 7.5, and even more preferably 0.05 to 5.

[0156] According to a preferred embodiment, the weight ratio of the total amount of bicarbonate / the total amount of silicate is 0.00025 to 20, preferably 0.02 to 7.5, more preferably 0.05 to 5.

[0157] The weight ratio of total amount of bicarbonate and / or bicarbonate generating system / total amount of chemical oxidant is preferably from 0.0008 to 20, more preferably from 0.11 to 5 and even more preferably from 0.2 to 4.2.

[0158] According to a preferred embodiment, the weight ratio of the total amount of bicarbonate salts / the total amount of chemical oxidizing agent is 0.0008 to 20, preferably 0.11 to 5 and more preferably 0.2 to 4.2.

[0159] According to a more preferred embodiment, the weight ratio of the total amount of bicarbonate / the total amount of hydrogen peroxide is 0.0008 to 20, preferably 0.11 to 5 and more preferably 0.2 to 4.2.

[0160] The weight ratio of total amount of carbonates and / or carbonate producing system / total amount of bicarbonates and / or bicarbonate producing system is preferably 0.0005-2000, more preferably 0.06-20 and even more preferably 0.06-5.

[0161] According to a preferred embodiment, the weight ratio of the total amount of carbonates / the total amount of bicarbonates is 0.0005-2000, preferably 0.06-20 and more preferably 0.06-5.

[0162] Compound iv)

[0163] The composition according to the invention also comprises iv) one or more compounds chosen from compounds consisting of saturated or unsaturated, linear or branched hydrocarbon-based chains comprising 1 to 30 carbon atoms, optionally substituted by one or more cyclic groups and / or optionally interrupted by one or more non-adjacent oxygen atoms; saturated or unsaturated, optionally aromatic, monocyclic or polycyclic, fused or non-fused carbocyclic compounds comprising 3 to 22 carbon atoms, optionally substituted by one or more identical or different groups selected from : (C1-C6) alkyl or (C1-C6) alkenyl or (C1-C6) alkoxy and / or optionally interrupted by one or more carbonyl (CO) groups; monocyclic or polycyclic, fused or non-fused, saturated or unsaturated, especially aromatic heterocyclic compounds, which contain 5 to 22 members and contain 1 to 3 oxygen atoms, optionally substituted by one or more identical or different groups selected from the following: (C1-C6) alkyl or (C1-C6) alkoxy and / or optionally interrupted by one or more carbonyl (CO) groups and mixtures thereof.

[0164] Preferably, compound iv) is selected from the following compounds 1e to 18e, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof:

[0165]

[0166]

[0167] More preferably, compound iv) is selected from compounds 1e, 2e, 4e and 18e, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0168] Even more preferably, compound iv) is selected from compounds 1e and 2e, solvates thereof and mixtures thereof.

[0169] Preferably, compound iv) does not comprise amine, ester, amide, alcohol, imine or acid functional groups.

[0170] Compound iv) is preferably selected from linear or branched C7-C 40 Alkanes, such as compounds 1e, 14e, 15e and 18e, ethers of the following formula (E):

[0171] R e1 -OR e2 (E)

[0172] in:

[0173] -R e1 and R e2 independently represents a straight or branched C1-C ... 20 Alkyl, or a 5-membered or 6-membered carbon ring, such as cyclohexyl or cyclopentyl;

[0174] R e1 and R e2 Together with the oxygen atoms carrying them they may form aromatic or nonaromatic heterocyclic groups, preferably having 5 or 6 chain members, which may optionally be substituted, in particular, by one or more radicals selected from (C1-C4)alkyl.

[0175] Compound iv) is preferably present in the composition in a total content ranging from 0.01% to 50% by weight, more preferably ranging from 1% to 30% by weight, even more preferably ranging from 1% to 15% by weight relative to the total weight of the composition.

[0176] Compound iv')

[0177] The composition according to the invention further comprises iv') one or more compounds selected from:

[0178] a) alcohol;

[0179] b) amphoteric or zwitterionic compounds selected from the group consisting of phospholipids such as lecithin, amino acids, amphoteric or zwitterionic surfactants and mixtures thereof;

[0180] c) esters, amides, imines and mixtures thereof;

[0181] d) organic amines;

[0182] e) organic acids;

[0183] f) and mixtures thereof.

[0184] Alcohol a)

[0185] Preferably, the alcohol is selected from the compounds of the following formula (Ia), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof:

[0186]

[0187] In formula (Ia):

[0188] ■R 1 and R 2 Independently means:

[0189] - a hydrogen atom; or

[0190] - a linear or branched, saturated or unsaturated hydrocarbon-based group comprising 1 to 30 carbon atoms, which is optionally interrupted by one or more non-adjacent oxygen atoms and / or is optionally substituted by one or more identical or different groups selected from: hydroxy (-OH) or (poly)(hydroxy)alkyl; or

[0191] -(hetero)cyclyl, which is optionally substituted by one or more identical or different groups selected from: -OR" or hydroxyl (-OH);

[0192] R 1 and R 2 Together with the carbon atoms carrying them, they may form a (hetero)cyclic group, which may be optionally substituted by one or more identical or different groups selected from the following:

[0193] -Hydroxy (-OH);

[0194] -(poly)(hydroxy)alkyl;

[0195] -group-OR";

[0196] -alkyl, which is optionally interrupted by one or more carbonyl (CO) groups and / or is optionally substituted by a (hetero)cyclyl group, which itself is optionally substituted by one or more identical or different groups selected from the group consisting of hydroxy (-OH) or (poly)(hydroxy)alkyl;

[0197] - optionally substituted by a (hetero)cyclic group, which itself is optionally substituted by one or more identical or different groups selected from the group consisting of hydroxy (-OH) or (poly)(hydroxy)alkyl;

[0198] ■R 3 express:

[0199] - a linear or branched, saturated or unsaturated or aromatic hydrocarbon-based radical comprising 1 to 30 carbon atoms, which is optionally interrupted by one or more non-adjacent oxygen atoms or one or more carbonyl groups (CO) and / or is optionally substituted by one or more identical or different radicals selected from the group consisting of hydroxyl (-OH) or (poly)(hydroxy)alkyl or -CHO or a (hetero)cyclyl radical, which itself is optionally substituted by one or more identical or different radicals selected from the group consisting of hydroxyl (-OH) or (poly)(hydroxy)alkyl or -OR" or -CHO; or

[0200] -(hetero)cyclyl, which is optionally substituted by one or more identical or different groups selected from: -OR" or (poly)(hydroxy)alkyl or -CHO;

[0201] ■p = 0 or 1;

[0202] ■R” stands for:

[0203] - a linear or branched, saturated or unsaturated hydrocarbon-based group containing 1 to 30 carbon atoms, which is optionally substituted by one or more hydroxyl groups (-OH); or

[0204] -(hetero)cyclyl, which is optionally substituted by one or more identical or different groups selected from hydroxy (-OH) or (poly)(hydroxy)alkyl.

[0205] Preferably, the alcohol does not contain any amino groups (primary NH2, secondary or tertiary amines).

[0206] More preferably, the alcohol is selected from the following compounds 1a to 50a, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof, and mixtures thereof:

[0207]

[0208]

[0209]

[0210]

[0211]

[0212]

[0213] Even more preferably, the alcohol is selected from Compounds 1a to 29a, 45a, 49a and 50a, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0214] More preferably, the alcohol is selected from compounds 1a, 2a, 3a, 12a, 15a, 16a, 18a, 21a, 22a, 26a, 29a, 45a and 49a, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0215] Even more preferably, the alcohol is selected from the group consisting of compound 12a, a salt thereof, an optical isomer thereof, a geometric isomer thereof, a tautomer thereof, a solvate thereof, and a mixture thereof.

[0216] According to one form of the invention, the alcohol is chosen from compounds of formula (Ia) wherein p=1, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof.

[0217] According to another form of the invention, the alcohol is chosen from compounds of formula (Ia) wherein p=0, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof.

[0218] According to a particular variant of the invention, the alcohol is selected from the group consisting of compounds of formula (Ia), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, in which p=1, R 1 and R 2 represents a hydrogen atom and R 3 express:

[0219] - a linear or branched, saturated or unsaturated or aromatic hydrocarbon-based radical comprising 1 to 30 carbon atoms, preferably linear or branched and saturated or unsaturated, which is optionally interrupted by one or more non-adjacent oxygen atoms or one or more carbonyl groups (CO), preferably not interrupted, and / or is optionally substituted by one or more identical or different radicals selected from hydroxyl (OH), -CHO or (hetero)cyclyl, such as phenyl, which itself is optionally substituted by one or more identical or different radicals selected from OH, -OR" or -CHO; or

[0220] -(hetero)cyclyl, optionally substituted by one or more identical or different groups selected from OH, -OR" or (poly)(hydroxy)alkyl or -CHO; R" is as previously defined.

[0221] As examples of alcohols of formula (Ia) according to this variant, mention may be made of compounds 1a, 2a, 3a, 6a, 7a, 8a, 9a, 11a, 12a, 13a, 14a, 15a, 16a, 18a, 19a, 20a, 21a, 22a, 23a, 24a, 25a, 26a, 28a, 29a, 31a, 32a, 33a, 34a, 37a, 43a, 45a, 46a, 49a, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof.

[0222] According to a preferred variant, the alcohol is selected from the group consisting of compounds of formula (Ia), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, in which p=1, R 1 and R 2 represents a hydrogen atom and R 3 denotes a linear or branched, saturated or unsaturated hydrocarbon-based radical comprising 1 to 30 carbon atoms, which is optionally interrupted by one or more non-adjacent oxygen atoms or one or more carbonyl groups (CO), preferably not interrupted, and / or is optionally substituted by one or more hydroxyl groups (OH).

[0223] According to a specific embodiment, the alcohol is selected from the group consisting of compounds of formula (Ia), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof, and mixtures thereof, wherein p=1, R 1 and R 2 represents a hydrogen atom and R 3 denotes a (hetero)cyclic radical, preferably having 5 or 6 chain members, more preferably a pyranose ring or a furanose ring, which is optionally substituted by one or more identical or different radicals selected from: OH, -OR" or (poly)(hydroxy)alkyl or -CHO; R" is as defined previously.

[0224] According to another particular embodiment, the alcohol is indicative of a sugar or a sugar derivative.

[0225] For the purposes of the present invention, the term "sugar" means a monosaccharide or polysaccharide comprising 2 to 5 saccharide units, preferably 2 to 3 saccharide units, more preferably sugar indicates a compound (monosaccharide or disaccharide) comprising 1 or 2 saccharide units.

[0226] It should be understood that for sugar, when sugar represents a monosaccharide, it can be in pyranose form (the sugar heterocycles constituting it have 6 chain members) or furanose form (the sugar heterocycles constituting it have 5 chain members); and when sugar represents a polysaccharide group, it comprises a sequence of 2 to 5 sugar units, which can be identical or different from each other and can be in furanose or pyranose form. Preferably, the polysaccharide is a disaccharide, which is produced by the connection of a sugar unit in the form of furanose to a unit in the form of pyranose, or a sugar unit in the form of pyranose to a unit in the form of furanose. Regardless of monosaccharide or polysaccharide, each sugar unit can be in L left-handed or D right-handed form, as well as in α or β end group isomerization form.

[0227] Preferably, the monosaccharide is selected from the group consisting of glucose, galactose, mannose, xylose, lyxose, fucose, arabinose, rhamnose, isorhamnose, fructose, sorbose, talose and mixtures thereof. Preferably, the disaccharide is selected from the group consisting of lactose, maltulose, palatinose, lactulose, amygdalin, turanose, cellobiose, isomaltose, rutinose, maltose and mixtures thereof.

[0228] For the purposes of the present invention, the term "sugar derivative" means a compound in which one or more hydroxyl groups (OH) carried by a furanose or pyranose ring are replaced by one or more alkoxy groups (OR) (wherein R" is as defined previously). As an example of a sugar derivative, mention may be made of compound 13a.

[0229] According to another particular embodiment, the alcohol is selected from the compounds of formula (Ia) (such that p=0), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof, and R 1 and R 2 Together with the carbon atoms carrying them, they form an aromatic or non-aromatic, preferably 6-membered (hetero)cyclic radical, which may be optionally substituted by one or more identical or different radicals selected from:

[0230] -Hydroxy (-OH);

[0231] -(poly)(hydroxy)alkyl;

[0232] - a group -OR", wherein R" is as previously defined;

[0233] -alkyl or alkenyl, which is optionally interrupted by one or more carbonyl (CO) groups, preferably not interrupted, and / or is optionally substituted by a (hetero)cyclic group, which itself is optionally substituted by one or more identical or different groups selected from the following: hydroxy (-OH) or (poly)(hydroxy)alkyl; more preferably, alcohol indicates a saturated or aromatic 5- or 6-membered ring with at least one hydroxy (-OH), preferably hydroxy (-OH), group, and optionally substituted by one or more groups -OR" (wherein R" is as previously defined).

[0234] As examples of alcohols of formula (Ia) according to this variant, mention may be made of compounds 17a, 38a, 39a and 41a.

[0235] When present in the composition, the alcohol is preferably present in the composition in a content ranging from 0.01% to 50% by weight, more preferably ranging from 0.1% to 30% by weight, even more preferably ranging from 0.2% to 15% by weight relative to the total weight of the composition.

[0236] Amphoteric or zwitterionic compounds b)

[0237] The amphoteric or zwitterionic compound is selected from the group consisting of phospholipids such as lecithin, amino acids, amphoteric or zwitterionic surfactants, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof, and mixtures thereof.

[0238] Phospholipids

[0239] The phospholipids may be of vegetable or animal origin and may be present in pure form or as a mixture.

[0240] Preferably, the phospholipids are of vegetable origin.

[0241] The phospholipids are preferably selected from lecithin.

[0242] The lecithin that can be used according to the invention can be hydrogenated or non-hydrogenated.

[0243] Unhydrogenated lecithin is usually obtained from vegetable or animal fatty substances by lipid extraction using non-polar solvents. This lipid fraction usually contains mainly glycerophospholipids, including phosphatidylcholine.

[0244] Animal or vegetable sources from which unhydrogenated lecithins can be extracted are, for example, soy beans, sunflowers or eggs. The glycerophospholipids included in these lecithins in high proportions are mainly phosphatidylcholine and phosphatidylethanolamine.

[0245] Preferably, the lecithin is of vegetable origin.

[0246] Unhydrogenated lecithin suitable for use herein may be lecithin derived from soy, sunflower or egg and / or mixtures thereof.

[0247] Lecithin is usually supplied dissolved in fatty acids, triglycerides or other solvents, or in powder or block form.

[0248] They are generally mixtures of lecithins, wherein the glycerophospholipid content in the commercially available products generally ranges from about at least 15% to about at least 95%.

[0249] Among the unhydrogenated lecithins that may be suitable for use in the cosmetic compositions according to the invention, mention may be made of the lecithins sold under the trade name Nattermann Phospholipon and Phosale Lecithins sold as lecithin, Epikuron 145V, Topcithin 300, Emulmetik 930, Ovothin 200 and organic lecithin sold by Lucas Meyer, Lipoid S20 sold by Lipoid Kosmetik, and Alcolec F 100 sold by American Lecithin Company.

[0250] The phospholipids may be selected from hydrogenated lecithin.

[0251] These hydrogenated lecithins are obtained by controlled hydrogenation of non-hydrogenated lecithins as described above.

[0252] As hydrogenated lecithin that can be used in the composition according to the invention, mention may be made of the product sold by Nikko under the reference Nikkol Lecinol S10.

[0253] Amino Acids

[0254] The amino acid may be selected from acidic amino acids, basic amino acids, polar neutral amino acids and non-polar neutral amino groups and mixtures thereof. The amino acid may be in D or L form or in a mixture.

[0255] The term "acidic amino acid" means an amino acid containing more acidic functional groups than basic functional groups, in particular a protein-forming amino acid whose side chain contains an acidic functional group. As examples of acidic amino acids, mention may be made of aspartic acid, glutamic acid and mixtures thereof.

[0256] The term "basic amino acid" means an amino acid containing more basic functional groups than acidic functional groups, in particular a protein-forming amino acid whose side chain contains a basic functional group. As examples of basic amino acids, arginine, histidine, lysine and mixtures thereof may be mentioned.

[0257] The term "polar neutral amino acid" means an amino acid that is uncharged at pH = 7 and contains a polar chemical functional group, such as a thiol, alcohol or phenol, or a basic amide CONH2 functional group. As examples of polar neutral amino acids, mention may be made of serine, threonine, cysteine, asparagine, glutamine, tyrosine and mixtures thereof.

[0258] The term "non-polar neutral amino acid" means an amino acid that is uncharged and non-polar at pH = 7. As examples of non-polar neutral amino acids, there may be mentioned amino acids selected from glycine, alanine, valine, leucine, isoleucine, methionine, phenylalanine, tryptophan, proline and mixtures thereof.

[0259] Amphoteric or zwitterionic surfactants

[0260] Amphoteric or zwitterionic surfactants may be optionally quaternized aliphatic secondary or tertiary amine derivatives, wherein the aliphatic radical is a straight or branched chain containing 8 to 22 carbon atoms and the amine derivative contains at least one anionic group, for example a carboxylate, sulfonate, sulfate, phosphate or phosphonate group.

[0261] Special mention can be made of (C8-C 20 ) alkyl betaine, (C8-C 20 ) alkyl sulfobetaine, (C8-C 20 ) alkylamido (C3-C8) alkyl betaine, (C8-C 20 )alkylamido (C6-C8)alkyl sulfonyl betaine and (C8-C 20 )alkylamido(C3-C8)alkylhydroxysulfonate.

[0262] Among the optionally quaternized secondary or tertiary aliphatic amine derivatives that can be used as defined above, mention may also be made of the compounds of the corresponding formulae (3) and (4):

[0263] R a -CONHCH2CH2-N + (R b )(R c )-CH2COO - ,M + ,X - (3)

[0264] in:

[0265] -R a denotes an acid R derived from preferably present in hydrolyzed coconut kernel oil a C of COOH 10 To C 30 alkyl or alkenyl, or heptyl, nonyl or undecyl;

[0266] -R b represents β-hydroxyethyl; and

[0267] -R c represents carboxymethyl;

[0268] -M+ represents a cationic counter ion derived from an alkali metal or alkaline earth metal such as sodium, an ammonium ion, or an ion derived from an organic amine, and

[0269] -X - represents an organic or inorganic anionic counterion, such as an anionic counterion selected from halides, acetates, phosphates, nitrates, (C1-C4)alkylsulfates, (C1-C4)alkylsulfonates or (C1-C4)alkylarylsulfonates, in particular methylsulfate and ethylsulfate; or alternatively, M + and X - does not exist;

[0270] R a' -CONHCH2CH2-N(B)(B') (4)

[0271] in:

[0272] -B represents a group -CH2CH2OX';

[0273] -B' represents the group -(CH2) z Y', where z = 1 or 2;

[0274] -X' represents a group -CH2COOH, -CH2-COOZ', -CH2CH2COOH or CH2CH2-COOZ', or a hydrogen atom;

[0275] -Y' represents a group -COOH, -COOZ' or -CH2CH(OH)SO3H or a group CH2CH(OH)SO3-Z';

[0276] -Z' represents a cationic counter ion derived from an alkali metal or alkaline earth metal such as sodium, an ammonium ion, or an ion derived from an organic amine;

[0277] -R a’ represents the acid R preferably present in hydrolyzed linseed oil or coconut oil a’ -COOH C 10 To C 30 Alkyl or alkenyl, alkyl, especially C 17 Alkyl and its isomeric forms, or unsaturated C 17 Group.

[0278] These compounds are classified in the CTFA Dictionary, 5th edition, 1993, under the names disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caproamphodiacetate, disodium capryloamphodiacetate, disodium cocoamphodipropionate, disodium lauroamphodipropionate, disodium caproamphodipropionate, disodium capryloamphodipropionate, lauroamphodipropionic acid and cocoamphodipropionic acid.

[0279] By way of example, mention may be made of the product sold by Rhodia under the trade name Cocoamphodiacetate sold by C2M Concentrate.

[0280] Compounds of formula (5) may also be used:

[0281] R a” -NHCH(Y')-(CH2) n CONH(CH2) n’ -N(R d )(R e ) (5)

[0282] in:

[0283] -Y" represents a group -COOH, -COOZ" or -CH2CH(OH)SO3H or a group CH2CH(OH)SO3-Z";

[0284] -R d and R e independently of one another represent a C1 to C4 alkyl group or a hydroxyalkyl group;

[0285] -Z" represents a cationic counter ion derived from an alkali metal or alkaline earth metal such as sodium, an ammonium ion, or an ion derived from an organic amine;

[0286] -R a” represents the acid R preferably present in hydrolyzed linseed oil or coconut oil a” -COOH C 10 To C 30 Alkyl or alkenyl;

[0287] -n and n' indicate an integer ranging from 1 to 3 independently of each other.

[0288] Among the compounds of formula (5), mention may be made of the compound classified in the CTFA dictionary under the name sodium diethylaminopropyl cocoyl aspartamide and sold by the company Chimex under the name Chimexane HB.

[0289] These compounds may be used alone or as a mixture.

[0290] Preferably, the amphoteric or zwitterionic surfactants are selected from (C8-C 20 ) alkyl betaine, (C8-C 20 ) alkyl sulfobetaine, (C8-C 20 ) alkylamido (C3-C8) alkyl betaine, (C8-C 20)alkylamido (C6-C8)alkyl sulfonyl betaine and (C8-C 20 )alkylamido(C3-C8)alkylhydroxysultaines, and also compounds of formula (3), (4) and (5) as defined above.

[0291] More preferably, the amphoteric or zwitterionic surfactants are selected from (C8-C 20 ) alkyl betaine (such as coconut oil acyl betaine), (C8-C 20 ) alkylamido (C3-C8) alkyl betaine (such as cocamidopropyl betaine) and (C8-C 20 ) alkylamido (C3-C8) alkyl hydroxysulfonyl betaine (such as cocamidopropyl hydroxysulfonyl betaine).

[0292] Even more preferably, the amphoteric or zwitterionic surfactant is selected from (C8-C 20 ) alkylamido (C3-C8) alkyl betaine (such as cocamidopropyl betaine) and (C8-C 20 ) alkylamido (C3-C8) alkyl hydroxysulfonyl betaine (such as cocamidopropyl hydroxysulfonyl betaine).

[0293] Preferably, the amphoteric or zwitterionic compound is selected from the following compounds 1b to 28b, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof:

[0294]

[0295]

[0296]

[0297]

[0298]

[0299] More preferably, the amphoteric or zwitterionic compound is selected from compounds 2b, 10b, 12b, 15b, 17b, 18b, 24b and 27b, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0300] Even more preferably, the amphoteric or zwitterionic compound is selected from compound 15b, a salt thereof, a solvate thereof, and a mixture thereof.

[0301] According to an embodiment, the amphoteric or zwitterionic compound has the formula R b -CO-XZ(B1), where R b It means (C1-C30 ) alkyl, preferably (C1-C 20 ) alkyl, more preferably (C8-C 16 ) alkyl, X represents an oxygen atom or NH, preferably NH, and Z represents a straight or branched hydrocarbon-based group containing 1 to 30 carbon atoms, preferably 1 to 10 carbon atoms, the group Z being substituted by a carboxyl group (COOH) and an amino group.

[0302] As an example of a compound of formula (B1), mention may be made of compound 3b.

[0303] According to another embodiment, the amphoteric or zwitterionic compound has the formula R1-N(R2)-[Y] t -Z(B2), wherein R1 and R2 independently represent a hydrogen atom or an alkyl group; preferably, R1 represents a hydrogen atom and R2 represents an alkyl group, Y represents CO or CONH, t is 0 or 1, and Z represents a straight or branched hydrocarbon-based group having 1 to 30 carbon atoms, the group Z being substituted by a carboxyl group (COOH) and an amino group.

[0304] As examples of compounds of formula (B2), mention may be made of compounds 5b, 20b and 26b.

[0305] According to a preferred embodiment, the zwitterionic or zwitterionic compound has the formula R1-N + (R2)(R3)-Z'-COO - (B3), wherein R1, R2 and R3 independently represent an alkyl group, preferably a C1-C 20 Alkyl such as methyl, the alkyl group is optionally substituted by an amide group -NH-CO-R4, wherein R4 represents a C1-C 30 (Hydroxy)alkyl, Z' represents a divalent straight or branched hydrocarbon-based group containing 1 to 30 carbon atoms, the group Z' being optionally substituted with one or more hydroxyl (OH) groups.

[0306] As examples of compounds of formula (B3), mention may be made of compounds 15b, 19b and 27b.

[0307] According to another embodiment, the amphoteric or zwitterionic compound has the formula NH2-Z'-COOH (B4), wherein Z' represents a linear or branched divalent hydrocarbon-based group having 1 to 30 carbon atoms, preferably 1 to 10 carbon atoms, more preferably 1 to 5 carbon atoms, which group Z' is optionally substituted with one or more hydroxyl (OH) groups, preferably unsubstituted.

[0308] As examples of compounds of formula (B4), mention may be made of compounds 21b, 22b and 28b.

[0309] When amphoteric or zwitterionic compounds are present in the composition, they are preferably present in the composition in a content ranging from 0.01% to 50% by weight, more preferably ranging from 0.1% to 30% by weight, even more preferably ranging from 0.2% to 15% by weight relative to the total weight of the composition.

[0310] Esters, amides and imines c)

[0311] Preferably, compound c) is selected from the group consisting of compounds of the following formula (Ic), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof:

[0312]

[0313] In formula (Ic):

[0314] ■ A represents a linear or branched, saturated or unsaturated hydrocarbon-based radical comprising 1 to 30 carbon atoms, which is optionally interrupted by one or more non-adjacent oxygen atoms and / or one or more identical or different radicals selected from: -CO-, -OCO-, -COO-, and / or is optionally substituted by one or more identical or different radicals selected from: hydroxyl (-OH), a radical -COOAk1, a (hetero)cyclic radical optionally substituted by one or more hydroxyl (-OH);

[0315] ■X1 independently represents an oxygen atom or a group -NR-, preferably an oxygen atom;

[0316] ■X2 represents an oxygen atom or a group -NR-, preferably an oxygen atom;

[0317] ■p = 0 or 1;

[0318] ■ B represents a saturated or unsaturated, linear or branched or cyclic hydrocarbon-based group containing 1 to 40 carbon atoms, which is optionally substituted by one or more identical or different groups selected from:

[0319] - (hetero)cyclyl, which is optionally substituted by one or more identical or different groups selected from the group consisting of hydroxy (-OH), -OR", -COOA', -OCOA', (poly)(hydroxy)alkyl;

[0320] -group -OR';

[0321] -group -COOA';

[0322] - group-OCOA';

[0323] and / or optionally interrupted by one or more non-adjacent oxygen atoms and / or one or more identical or different groups selected from: -OCO-, -COO-;

[0324] ■ A' represents a linear or branched, saturated or unsaturated hydrocarbon-based group containing 1 to 30 carbon atoms, which is optionally interrupted by one or more non-adjacent oxygen atoms and / or one or more identical or different groups selected from the following: -CO-, -OCO-, -COO-, and / or is optionally substituted by one or more identical or different groups selected from the following: hydroxyl (-OH), -COOAk1;

[0325] ■ R represents a hydrogen atom or an alkyl group, in particular a (C1-C4)alkyl group;

[0326] ■ R' represents a hydrogen atom or an alkyl group which is optionally substituted by one or more identical or different groups selected from the group consisting of: hydroxyl (-OH) or -OCOA';

[0327] ■R” stands for:

[0328] - an alkyl group optionally substituted with one or more hydroxyl groups (-OH); or

[0329] - (hetero)cyclyl, which may be optionally substituted by one or more identical or different groups selected from: hydroxy (-OH), (poly)(hydroxy)alkyl;

[0330] ■Ak1 represents an alkyl group optionally substituted with -COOAk2;

[0331] ■Ak2 represents an alkyl group;

[0332] R and B may form a heterocyclic ring together with the nitrogen atom carrying them;

[0333] A and B may together form a heterocyclic ring which is optionally substituted, in particular, by one or more identical or different groups selected from:

[0334] - (hetero)cyclyl, which is optionally substituted, in particular, by one or more identical or different radicals selected from: hydroxy (-OH), (poly)(hydroxy)alkyl;

[0335] -Hydroxy (-OH);

[0336] -group-OR";

[0337] -(poly)(hydroxy)alkyl;

[0338] It will be appreciated that if X1 represents a group -NR-, then A and B may represent hydrogen atoms.

[0339] More preferably, compound c) is selected from the following compounds 1c to 94c, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof:

[0340]

[0341]

[0342]

[0343]

[0344]

[0345]

[0346]

[0347]

[0348]

[0349]

[0350]

[0351]

[0352]

[0353]

[0354]

[0355]

[0356] Even more preferably, compound c) is selected from compounds 1c to 63c and 94c, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof, and mixtures thereof.

[0357] Preferably, compound c) is selected from compounds 1c, 4c, 5c, 6c, 8c, 12c, 15c, 16c, 22c, 24c, 26c, 27c, 31c, 33c, 37c, 41c, 53c, 54c, 55c, 58c, 60c, 62c, 63c and 94c, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof.

[0358] Even more preferably, compound c) is selected from compound 58c, a salt thereof, an optical isomer thereof, a geometric isomer thereof, a tautomer thereof, a solvate thereof, and a mixture thereof.

[0359] According to a preferred variant of the invention, compound c) is selected from the group consisting of compounds of formula (Ic), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, in which p=0 and X1 and X2 represent oxygen atoms. According to this variant, compound c) preferably refers to compounds of the following formula (C1), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof:

[0360] A1-CO-O-B1(C1)

[0361] in:

[0362] -A1 means C1-C 40 Alkyl or alkenyl, which is optionally substituted by one or more hydroxyl (OH) groups and / or is optionally interrupted by -OCO-, CO-O-, -O- or CO-NR or CO, wherein R is as defined previously, preferably (C1-C4)alkyl such as methyl;

[0363] -B1 means C1-C 40 Alkyl or alkenyl, which may be substituted by one or more identical or different groups selected from the following: hydroxyl (OH), (hetero)cyclic group, which may be substituted by one or more selected from hydroxyl (OH), -OR b , -O-CO-A3, wherein A3 represents C1-C 40 alkyl or alkenyl, and R b Preferably represents C1-C6 alkyl; and / or optionally inserted with -O-CO-, -CO-O-, -CO-NR' a -、-NR' a -CO-, oxygen atom -O- or -CO-, where R' a Represents a hydrogen atom or C1-C 10 Alkyl, preferably C1-C4 alkyl, such as methyl.

[0364] As examples of compounds of formula (C1), mention may be made of compounds 1c to 8c, 9c to 30c, 32c to 35c, 36c to 39c, 41c to 48c, 50c to 63c, 65c to 69c, 73c, 74c, 76c, 78c to 82c, 84c, 85c, 91c, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, in particular compounds 1c, 4c, 5c, 6c, 8c, 12c, 15c, 16c, 22c, 24c, 26c, 27c, 33c, 37c, 41c, 53c, 54c, 55c, 58c, 60c, 62c and 63c, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, in particular compounds 8c and 58c, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof.

[0365] According to another variant of the invention, compound c) is selected from compounds of formula (Ic), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, wherein p=0 and X1 and X2 indicate oxygen atoms, and compounds of the following formula (C2), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof:

[0366] A2-CO-O-B2(C2)

[0367] in:

[0368] - A2 and B2 together with the atoms carrying them form an aromatic or non-aromatic heterocyclic group which is optionally substituted, in particular, by one or more identical or different groups selected from:

[0369] - (hetero)cyclyl, which is optionally substituted, in particular, by one or more identical or different radicals selected from: hydroxy (-OH), (poly)(hydroxy)alkyl;

[0370] -Hydroxy (-OH);

[0371] - a group -OR", wherein R" is as previously defined; in particular, R" indicates a C1-C6 alkyl group, such as ethyl;

[0372] -(Poly)(hydroxy)alkyl.

[0373] As examples of the compound of formula (C2), there can be mentioned compounds 40c, 75c, 90c, 92c, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0374] According to another variant of the invention, compound c) is chosen from compounds of formula (Ic), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, in which formula (Ic), p=1 and X1 and X2 indicate oxygen atoms.

[0375] According to this variant, compound c) preferably refers to a compound of the following formula (C3), its salts, its optical isomers, its geometric isomers, its tautomers, its solvates and mixtures thereof:

[0376] A4-O-CO-O-B4(C3)

[0377] in:

[0378] ■A4 and B4 independently represent C1-C 40 , preferably C1-C 20 , more preferably C1-C 10 Alkyl or alkenyl, which may be optionally substituted by one or more hydroxyl groups (OH), -OR", wherein R" is as defined above, in particular R" represents C1-C6 alkyl, such as methyl or (poly)(hydroxy)alkyl, which may be unsubstituted, and / or may be optionally interrupted by -OCO-, CO-O-, -O-, CO-NR a , where R a indicates a hydrogen atom or preferably a C1-C4 alkyl group or a CO group, which is preferably interrupted by -O-, more preferably not interrupted; or

[0379] A4 and B4 together with the atoms carrying them form an aromatic or non-aromatic heterocyclic group which is optionally substituted, in particular, by one or more identical or different groups selected from:

[0380] - (hetero)cyclyl, which is optionally substituted, in particular, by one or more identical or different radicals selected from: hydroxy (-OH), (poly)(hydroxy)alkyl;

[0381] -Hydroxy (-OH);

[0382] - a group -OR", wherein R" is as previously defined; in particular, R" represents a C1-C6 alkyl group, such as a methyl group;

[0383] - (Poly)(hydroxy)alkyl, such as C1-C6 alkyl, C1-C6 hydroxyalkyl or C1-C6 polyhydroxyalkyl.

[0384] Preferably, the compound of formula (C3) is such that A4 and B4 are identical.

[0385] Preferably, A4 and B4 independently represent a preferably linear C1-C 10Alkyl, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, heptyl or octyl.

[0386] Preferably, when A4 and B4 together with the atoms carrying them form an aromatic or non-aromatic heterocyclic group, the heterocyclic group is optionally substituted by one or more identical or different groups selected from the following:

[0387] - a group -OR", wherein R" is as previously defined; in particular, R" represents a C1-C6 alkyl group, such as a methyl or ethyl group;

[0388] - (Poly)(hydroxy)alkyl, such as C1-C6 alkyl, C1-C6 hydroxyalkyl or C1-C6 polyhydroxyalkyl.

[0389] As examples of the compound of formula (C3), there can be mentioned compounds 31c, 70c, 71c, 72c, 77c, 93c, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0390] According to another variant of the invention, compound c) is chosen from compounds of formula (Ic), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, in which formula (Ic), p=0 and X1 and X2 indicate oxygen atoms.

[0391] According to this variant, compound c) preferably refers to a compound of the following formula (C4), its salts, its optical isomers, its geometric isomers, its tautomers, its solvates and mixtures thereof:

[0392] A5-CO-NR b -B5(C4)

[0393] in:

[0394] ■A5 and B5 independently represent C1-C 40 , preferably C1-C 20 alkyl or alkenyl, which may be optionally substituted by one or more hydroxyl groups (OH), -OR", wherein R" is as previously defined; in particular, R" represents C1-C6 alkyl, such as methyl or (poly)(hydroxy)alkyl, which is preferably unsubstituted, and / or optionally interrupted by -OCO-, CO-O-, -O-, CO-NR a , where R a represents a hydrogen atom or preferably a C1-C4 alkyl group or CO, preferably with an insertion of -O-, more preferably without an insertion; or

[0395] A5 and B5 together with the atoms carrying them form an aromatic or non-aromatic heterocyclic group which is optionally substituted, in particular, by one or more identical or different groups selected from:

[0396] - heterocyclic groups, which are optionally substituted, in particular, by one or more identical or different groups selected from the group consisting of hydroxy (-OH) and (poly)(hydroxy)alkyl, said heterocyclic groups possibly also containing one or more CO;

[0397] -Hydroxy (-OH);

[0398] - a group -OR", wherein R" is as previously defined; in particular, R" represents a C1-C6 alkyl group, such as a methyl or ethyl group;

[0399] - (poly)(hydroxy)alkyl, such as C1-C6 alkyl, C1-C6 hydroxyalkyl or C1-C6 polyhydroxyalkyl; and

[0400] ■R b Indicates hydrogen atoms or C1-C 20 Alkyl, preferably C1-C 10 Alkyl, more preferably C1-C4 alkyl, such as methyl or ethyl.

[0401] As examples of the compound of formula (C4), there can be mentioned compounds 88c, 71c, 72c, 77c, 93c, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0402] According to another variant of the invention, compound c) is chosen from compounds of formula (Ic), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, in which p=1, and X1 represents a group -NR-, and X2 represents a group -NR- or an oxygen atom, wherein R represents a hydrogen atom or an alkyl group, in particular a (C1-C4)alkyl group;

[0403] According to this variant, compound c) preferably refers to a compound of the following formula (C5), its salts, its optical isomers, its geometric isomers, its tautomers, its solvates and mixtures thereof:

[0404] A6-NR-C=X1-NR-B6(C5)

[0405] in:

[0406] ■A6 and B6 independently represent hydrogen atoms, C1-C 20 , preferably C1-C 10 Alkyl or alkenyl, which is optionally substituted, preferably unsubstituted, by one or more hydroxyl (OH), -OR" or (poly)(hydroxy)alkyl, and / or optionally interrupted, preferably not interrupted, by -OCO-, CO-O-, -O- or CO; or

[0407] A6 and B6 together with the atoms carrying them form an aromatic or non-aromatic heterocyclic group which is optionally substituted, in particular, by one or more identical or different groups selected from:

[0408] -Hydroxy (-OH);

[0409] - a group -OR", wherein R" is as previously defined; in particular, R" indicates a C1-C6 alkyl group, such as a methyl group;

[0410] - (poly)(hydroxy)alkyl, such as C1-C6 alkyl, C1-C6 hydroxyalkyl or C1-C6 polyhydroxyalkyl, preferably C1-C4 alkyl, such as methyl;

[0411] ■ R represents a hydrogen atom or an alkyl group, in particular a (C1-C4)alkyl group such as a methyl group or an ethyl group.

[0412] Preferably, when A6 and B6 together with the atoms carrying them form an aromatic or non-aromatic heterocyclic group, the heterocyclic group is optionally substituted by one or more identical or different groups selected from the following: C1-C6 alkyl, preferably C1-C4 alkyl, such as methyl.

[0413] As examples of the compound of formula (C5), there can be mentioned compounds 49c, 64c, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0414] When compounds c) are present in the composition, they are preferably present in a content ranging from 0.01% to 50% by weight, more preferably ranging from 0.1% to 30% by weight, even more preferably ranging from 0.2% to 15% by weight relative to the total weight of the composition.

[0415] Organic amines d)

[0416] The organic amines of the present invention may or may not be polymeric.

[0417] According to a preferred embodiment of the invention, the polymeric organic amine is polyaminated and hydrocarbon-based and therefore does not contain any Si atoms.

[0418] The organic amine may be chosen in particular from amino polymers having a range of 500 g.mol -1 Up to 1000 000 g.mol -1 , preferably in the range of 500 g.mol -1 Up to 500 000 g.mol -1 , and preferably in the range of 500 g.mol -1 to 100000 g.mol -1 The weight average molecular weight.

[0419] According to a particular embodiment of the invention, the organic amine is a diamine and is particularly selected from the group consisting of, in particular, the formula H2N-ALK-O-[ALK'-O] m -ALK"-NH2 polyetherdiamine, in which ALK, ALK' and ALK", which may be identical or different, represent a linear or branched (C1-C6)) alkylene group, and m represents an integer greater than or equal to 0, such as 4,7,10-trioxa-1,13-tridecanediamine or the compound known from Huntsman under the reference number Jeffamine, and more particularly α,ω-diaminopolyethylene glycol and / or polypropylene glycol (having an amine function at the end of the chain), such as the products sold under the names Jeffamine D-230, D-400, D-2000, D-4000, ED-600, ED-9000 and ED-2003.

[0420] According to a particular embodiment of the invention, the organic amines are triaminated, ie they contain three primary and / or secondary amine groups, preferably primary amine groups (NH2). More particularly, they are selected from, in particular, the formula ALK"'[(O-ALK') m -NH2]3, wherein ALK' is as defined previously and ALK"' represents a linear or branched trivalent (C1-C6) alkylene group, and m represents an integer greater than or equal to 0.

[0421] As triaminoorganic amines, mention may be made in particular of polyethertriamines and especially of α,ω-diaminopolyethylene glycols and / or polypropylene glycols (having an amine function at the end of the chain), such as the product sold under the name Jeffamine T-403.

[0422] According to another particular embodiment of the invention, the organic amine comprises more than three primary and / or secondary amine groups, preferably primary amine groups (NH2).

[0423] In this variant, the organic amine is selected from poly(meth)acrylates or poly(meth)acrylamides carrying primary or secondary amine side functional groups, such as poly(3-aminopropyl)methacrylamide and poly(2-aminoethyl)methacrylate.

[0424] According to another embodiment, the organic amine is chosen from chitosan, in particular poly(D-glucosamine) and polydimethylsiloxane comprising primary amine groups at the end of the chain and / or on the side chains.

[0425] According to another embodiment, the organic amine is in particular selected from poly(alkylene (C2-C5) imines), and preferably polyethylene imine and polypropylene imine, especially poly(ethylene imine), in particular the product sold by Aldrich Chemical under the reference number 408700 or by BASF under the trade name Lupasol, in particular having a molecular weight of 1200 to 25000; poly(allylamine), in particular the product sold by Aldrich Chemical under the reference number 479136; polyvinylamine and its copolymers, in particular copolymers with vinylamides, in particular vinylamine / vinylformamide copolymers, such as those sold by BASF under the name 9030; polyamino acids containing NH2 groups, such as polylysine, especially the products sold by JNC Corporation (formerly known as Chisso); aminodextran, especially the products sold by CarboMer Inc; aminopolyvinyl alcohol, especially the products sold by Carbomer Inc; copolymers based on acrylamido(C1-C6)alkylamines, especially copolymers based on acrylamidopropylamine; and poly(D-glucosamine), for example sold by Kytozyme under the reference number Kinotrime For sale.

[0426] As organic amines, mention may also be made of α,ω-diaminopolytetrahydrofuran (or polybutylene glycol) and α,ω-diaminopolybutadiene.

[0427] According to a particular embodiment of the invention, the organic amine is selected from hyperbranched polymers comprising at least one amino group and dendrimers carrying at least one amino group, such as PAMAM polyamidoamine dendrimers having an ethylenediamine core and terminal amine functional groups.

[0428] Preferably, the organic amine is selected from the following compounds 1d to 37d, chitosan, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof:

[0429]

[0430]

[0431]

[0432]

[0433]

[0434] More preferably, the organic amine is selected from Compounds 1d to 37d, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof, and mixtures thereof.

[0435] Even more preferably, the organic amine is selected from Compounds 1d to 35d, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof, and mixtures thereof.

[0436] Most preferably, the organic amine is selected from compounds 1d, 2d, 3d, 22d and 30d, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0437] Preferably, the organic amine is selected from compound 2d, a salt thereof, an optical isomer thereof, a geometric isomer thereof, a tautomer thereof, a solvate thereof, and a mixture thereof.

[0438] The organic amine is preferably selected from the compounds of the following formula (D), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof:

[0439] R aa N(R bb )(R cc )(D)

[0440] in:

[0441] R aa , R bb and R cc Independently means:

[0442] - Hydrogen atoms;

[0443] -C1-C 40 Alkyl or C2-C 40 Alkenyl, preferably C1-C 40 Alkyl, the alkyl or alkenyl group is optionally substituted by at least one group selected from the following: amino (-NH2), acylamino (-CONH2), imine such as -N=N-NH2 (NH2), hydroxyl (-OH), ester-O-CO-Ak or -CO-O-Ak, amide-NR-CO-Ak or -CO-NR-Ak1, or is substituted by a (hetero)cyclic group, which is optionally substituted by one or more groups selected from the following: (poly) (hydroxy)alkyl, amino (-NH2), amine-NR dd (R ee ), hydroxyl (-OH) or imine such as -N = N-NH2 (NH2), the alkyl or alkenyl may also be inserted with an oxygen atom, NR, -OCO-, -CO-O-, -CO-NR-, -NR-CO- or CO group, preferably with an oxygen atom or -OCO- or -CO-O-ester;

[0444] - a heterocyclic group, which is optionally substituted by one or more groups selected from the group consisting of (poly)(hydroxy)alkyl, amino (-NH2), amine-NR dd (R ee ), hydroxyl (-OH) or imine such as -N=N-NH2(NH2);

[0445] R aa and R bb Together with the nitrogen atom carrying them, they can form an aromatic or non-aromatic heterocyclic group, preferably with 5 or 6 chain members, which is optionally substituted by one or more groups selected from the group consisting of (poly)(hydroxy)alkyl, amino (-NH2), amine-NR dd (R ee ), hydroxyl (-OH);

[0446] It should be understood that R aa , R bb and R cc It cannot indicate hydrogen atoms at the same time;

[0447] Ak represents an alkyl or alkenyl group, preferably an alkyl group, which group is optionally substituted by at least one hydroxyl group (-OH), and which group may also be interrupted by an oxygen atom, NR or CO group;

[0448] Ak1 represents a hydrogen atom or an alkyl or alkenyl group, preferably an alkyl group, which is optionally substituted by at least one hydroxyl group (-OH) and which may also be interrupted by an oxygen atom, a group NR or CO;

[0449] R dd and R ee independently represent an alkyl or alkenyl group optionally substituted by at least one group selected from hydroxyl (-OH), said alkyl or alkenyl group possibly also interrupted by an oxygen atom, a group NR or CO;

[0450] R dd and R ee may form, together with the nitrogen atom carrying them, an aromatic or nonaromatic heterocyclic group, preferably having 5 or 6 chain members, said heterocyclic group being optionally substituted by one or more groups selected from: (poly)(hydroxy)alkyl, amino (-NH2) and hydroxyl (-OH);

[0451] R represents a hydrogen atom or preferably a C1-C4 alkyl group such as a methyl group.

[0452] According to the first embodiment, the organic amine is preferably selected from the compounds of formula (D), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof, wherein R bb and R cc Represents a hydrogen atom.

[0453] Preferably, according to this embodiment, R aa instruct:

[0454] -C1-C 40 Alkyl or C2-C 40 Alkenyl, preferably C1-C 40 Alkyl, the alkyl or alkenyl group is optionally substituted by at least one group selected from the following: hydroxyl (-OH), amino (-NH2), acylamino (-CONH2), imine such as -N = N-NH2 (NH2), ester-O-CO-Ak or -CO-O-Ak, or substituted by a (hetero)cyclic group, which is optionally substituted by one or more groups selected from the following: (poly) (hydroxy)alkyl, amino (-NH2), amine-NR dd (R ee ), hydroxyl (-OH) or imine such as -N = N-NH2 (NH2), the alkyl or alkenyl may also be inserted with an oxygen atom, NR, -OCO-, -CO-O-, -CO-NR-, -NR-CO- or CO group, preferably with an oxygen atom or -OCO- or -CO-O-ester;

[0455] - a heterocyclic group, which is optionally substituted by one or more groups selected from the group consisting of (poly)(hydroxy)alkyl, amino (-NH2), amine-NR dd (R ee ), hydroxyl (-OH) or imine such as -N=N-NH2(NH2), preferably hydroxyl or (poly)(hydroxy)alkyl.

[0456] As examples of the compound according to this embodiment, compounds 2d, 3d, 5d to 18d, 22d to 27d, 29d, 32d to 34d, 36d and 37d may be mentioned.

[0457] According to a particular variant of this embodiment, the organic amine is preferably selected from the group consisting of compounds of formula (D), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof, wherein R bb and R cc represents a hydrogen atom, and R aa represents a heterocyclic group selected from sugars as described previously, preferably a monosaccharide or polysaccharide containing 2 to 5 sugar units, preferably 2 to 3 sugar units; preferably, sugar denotes a compound (monosaccharide or disaccharide) containing 1 or 2 sugar units, in particular glucosamine or galactosamine.

[0458] According to a particular variant of this embodiment, the organic amine is preferably selected from the group consisting of compounds of formula (D), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof, wherein R bb and Rcc represents a hydrogen atom, and R aa represents an alkyl or alkenyl group, preferably a C1-C 40 The alkyl group, the alkyl group or the alkenyl group may be optionally substituted by at least one hydroxyl group (-OH) and / or interrupted by an oxygen atom.

[0459] According to a particular variant of this embodiment, the organic amine is preferably selected from the group consisting of compounds of formula (D), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof, wherein R bb and R cc represents a hydrogen atom, and R aa represents an alkyl or alkenyl group, preferably a C1-C ... 40 Alkyl, said alkyl or alkenyl being interrupted by at least one NR group, wherein R is as defined above, preferably represents a hydrogen atom.

[0460] According to yet another specific variant of this embodiment, the organic amine is preferably selected from the compounds of formula (D), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof, wherein R bb and R cc indicates a hydrogen atom, and R aa represents an alkyl or alkenyl group, preferably C1-C 10 Alkyl, more preferably C2-C 10 Alkyl, optionally substituted by one or more groups selected from: hydroxyl as described for (D) or (hetero)cyclic groups, such as phenyl optionally substituted by OH, said alkyl or alkenyl further having an oxygen atom, ester -OCO- or -CO-O-.

[0461] According to another embodiment, the organic amine is preferably selected from the compounds of formula (D), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof, wherein R aa represents a hydrogen atom, and R as defined previously bb and R cc is not a hydrogen atom; preferably, R bb and R cc Independently represent C1-C 10 Alkyl or C2-C 10 Alkenyl, preferably C1-C 10 Alkyl, more preferably C1-C6 alkyl, the alkyl or alkenyl group is optionally substituted by one or more hydroxyl groups (-OH), or R aa and R bbTogether with the nitrogen atom carrying them, they form an aromatic or non-aromatic, preferably non-aromatic, 5- or 6-membered heterocyclic group, which is optionally substituted by one or more groups selected from C1-C4 (poly)(hydroxy)alkyl and hydroxy (-OH).

[0462] According to another embodiment, the organic amine is preferably selected from the compounds of formula (D), salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof, wherein R as previously defined aa , R bb and R cc is not a hydrogen atom; preferably, R aa , R bb and R cc Independently represent C1-C 10 Alkyl or C2-C 10 Alkenyl, preferably C1-C 10 Alkyl, more preferably C1-C6 alkyl, the alkyl or alkenyl group is optionally substituted by one or more groups selected from hydroxyl (-OH), aromatic or non-aromatic, preferably aromatic 5-membered or 6-membered (hetero)cyclic groups, the (hetero)cyclic groups are optionally substituted by one or more groups selected from C1-C4 (poly) (hydroxy)alkyl and C1-C4 alkoxy. Preferably, R aa and R bb Independently represent C1-C 10 alkyl, more preferably C1-C6 alkyl, which may be optionally substituted with one or more hydroxyl groups (-OH), and R cc represents an aromatic or non-aromatic, preferably aromatic, 5- or 6-membered (hetero)cyclic group, which is optionally substituted by one or more groups selected from C1-C4 (poly)hydroxyalkyl, hydroxyl (-OH) and C1-C4 alkoxy.

[0463] When organic amines d) are present in the composition, they are preferably present in a content ranging from 0.01% to 50% by weight, more preferably ranging from 0.1% to 30% by weight, even more preferably ranging from 0.2% to 15% by weight relative to the total weight of the composition.

[0464] Organic acide)

[0465] Preferably, the organic acid is selected from the compounds of the following formula (I) and / or (II), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof:

[0466]

[0467] In formula (I):

[0468] ■X represents a carbon atom or S=O or P-OH, preferably a carbon atom;

[0469] ■A represents the group -OR 4 or group-CR 1 (R 2 )p(R 3 ), it is understood that if X represents P-OH, then A represents a group -OR 4 ;

[0470] ■p = 0 or 1;

[0471] ■R 1 represents a hydrogen atom or a hydroxyl group (-OH) or a group -NR a -R c or group -NR a -CO-R c ;

[0472] ■R 2 represents a hydrogen atom or a hydroxyl group (-OH) or a group -X(O)OH, wherein X is as defined previously, in particular wherein X represents a carbon atom;

[0473] ■R 3 represents a hydrogen atom or a hydroxyl group (-OH) or a (hetero)cyclic group which is optionally substituted by one or more identical or different groups selected from the following: (C1-C6)alkyl, especially (C1-C4)alkyl such as methyl, alkylcarbonyl-(CO)-R c , alkylcarbonyloxy-O-CO-R c , alkoxycarbonyl-CO-OR c , -OH, (C1-C6) alkoxy, in particular (C1-C4) alkoxy such as methoxy, -X(O)OH, wherein X is as defined above, in particular wherein X represents a carbon atom, or -OX(O)OH, wherein X is as defined above, or R 3 represents an alkyl or alkenyl group or an alkylamino group or an alkylamide group, wherein the alkyl or alkenyl group or an alkylamino group or an alkylamide group is:

[0474] - optionally substituted by one or more identical or different groups selected from the group -X(O)OH, wherein X is as defined previously, in particular wherein X represents a carbon atom; a hydroxyl (-OH) group or a (hetero)cyclyl group; and / or

[0475] - optionally interrupted by one or more heteroatoms or groups selected from: -O-, -NR a -, -S-, -CO- or a combination thereof, such as -O-CO-, -(CO)-O-, -NR a -(CO)- or -(CO)-NR a -;

[0476] R 1 and R 3 Together with the carbon atoms carrying them, they can form a (hetero)cyclic group, which can be optionally substituted by one or more identical or different groups selected from the following: (C1-C6)alkyl, especially (C1-C4)alkyl such as methyl, alkylcarbonyl-(CO)-R c , alkylcarbonyloxy-O-CO-R c , alkoxycarbonyl-CO-OR c , -OH, (C1-C6)alkoxy, especially (C1-C4)alkoxy such as methoxy, -X(O)OH, wherein X is as defined above, especially wherein X represents a carbon atom or -OX(O)OH, wherein X is as defined above, especially wherein X═P-OH;

[0477] R 1 and R 3 can form carbonyl -CO- together with the carbon atom that bears them;

[0478] ■R 4 represents a hydrogen atom or an alkyl or alkenyl or (hetero)cyclyl group, which may be optionally substituted by one or more identical or different groups selected from: a group -X(O)OH, wherein X is as defined previously, in particular wherein X represents a carbon atom or P-OH; a hydroxyl (-OH) or (hetero)cyclyl group;

[0479] ■R a represents a hydrogen atom or a (C1-C4)alkyl group optionally substituted by one or more groups -X(O)OH, wherein X is as previously defined, in particular wherein X represents a carbon atom;

[0480] ■R c represents an alkyl or alkenyl group or an alkylamino group or an alkylamide group, wherein the alkyl or alkenyl group or an alkylamino group or an alkylamide group is:

[0481] - optionally substituted by one or more identical or different groups selected from: a group -X(O)OH, wherein X is as defined previously, in particular wherein X represents a carbon atom; a hydroxyl (-OH) group or a (hetero)cyclyl group; and / or

[0482] - optionally interrupted by one or more heteroatoms or groups selected from: -O-, -S-, -CO-, -O-CO-, -O-CO-, -NR a -(CO)- or -(CO)-NR a -;

[0483] P-(CHO) m (COOY) n (II)

[0484] In formula (II):

[0485] ■ P represents a polysaccharide chain composed of monosaccharides containing 5 carbon atoms or more than 5 carbon atoms, preferably 6 or more than 6 carbon atoms and more particularly 6 carbon atoms;

[0486] ■ Y is selected from a hydrogen atom, ions derived from alkali metals or alkaline earth metals such as sodium or potassium, ammonia, organic amines such as monoethanolamine, diethanolamine, triethanolamine and 3-amino-1,2-propanediol, and basic amino acids such as lysine, arginine, sarcosine, ornithine and citrulline;

[0487] ■m+n is greater than or equal to 1;

[0488] ■ m is the degree of substitution of the polysaccharide by one or more aldehyde groups (DS(CHO)), which is in the range of 0.001 to 2 and preferably 0.005 to 1.5;

[0489] ■ n is the degree of substitution of the polysaccharide by one or more carboxyl groups (DS(COOX)), which ranges from 0 to 2 and preferably from 0.001 to 1.5.

[0490] The expression "degree of substitution DS(CHO) or DS(COOX) of the polysaccharide according to the invention" means the ratio between the number of carbons oxidized to give aldehyde or carboxyl groups and the number of basic monosaccharides constituting the polysaccharide (even ring-opened by pre-oxidation) for all repeating units.

[0491] The groups CHO and COOX may be obtained during the oxidation of certain carbon atoms of a sugar unit containing 6 carbon atoms, for example at position C2, C3 or C6. Preferably, the oxidation may be carried out at C2 and C3, more particularly at 0.01% to 75% and preferably at 0.1% to 50%, based on the number of rings that may have been opened.

[0492] The polysaccharide chain represented by P is preferably selected from inulin, cellulose, starch, guar gum, xanthan gum, pullulan, alginate gum, agar-agar gum, carrageenan, gellan gum, gum arabic, xylose and tragacanth, and derivatives thereof, cellobiose, maltodextrin, scleroglucan, chitosan, ulvan, fucoidan, alginate, pectin, heparin, hyaluronic acid or mixtures thereof, more preferably selected from inulin or starch. Even more preferably, the polysaccharide chain is inulin.

[0493] The term "derivatives" means compounds obtained by chemical modification of the compounds mentioned. They may be esters, amides or ethers of said compounds.

[0494] The oxidation can be carried out according to methods known in the art, for example according to FR 2 842 200, document FR 2 854161 or the method described in the article "Hydrophobic films from maize bran hemicelluloses", E. Fredon et al., Carbohydrate Polymers 49, 2002, pages 1 to 12. Another oxidation method is described in the article "Water soluble oxidized starches by peroxide reaction extrusion", Industrial Crops and Products 75 (1997) 45-52-REWing, JL Willet. These oxidation methods are easy to carry out, effective and do not produce any toxic by-products or by-products that are difficult to remove.

[0495] The peroxides which can be used in these oxidation processes can be alkali metal or alkaline earth metal percarbonates or perborates, alkyl peroxides, peracetic acid or hydrogen peroxide. Hydrogen peroxide is particularly preferred because it is readily available and does not produce interfering by-products.

[0496] The amount of peroxide in the reaction medium is from 0.05 to 1 molar equivalent, preferably from 0.1 to 0.8 molar equivalent per glucose unit of the polysaccharide.The peroxide is preferably added in portions continuously, stirring the reaction medium between two additions.

[0497] In the oxidation process, a single phthalocyanine or a mixture of phthalocyanines, such as a mixture of cobalt phthalocyanine and iron phthalocyanine, can be used as a catalyst. The amount of the catalyst depends on the desired degree of substitution. Usually, a small amount, such as 0.003 to 0.016 molar equivalents per 100 glucose units of the polysaccharide is suitable.

[0498] The process can also be carried out by contacting the polysaccharide in comminuted form with a catalyst dissolved in a small amount of water and with a peroxide. This process is known as a "semi-dry" process.

[0499] The process can be carried out by reactive extrusion in the presence of peroxide.

[0500] More preferably, the polysaccharide is obtained by oxidation of inulin, cellulose, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, methylcellulose, starch, acetic starch, hydroxyethyl starch, hydroxypropyl starch, guar gum, carboxymethyl guar gum, carboxymethyl hydroxypropyl guar gum, hydroxyethyl guar gum, hydroxypropyl guar gum, xylose or xanthan gum, carrageenan, cellobiose, maltodextrin, scleroglucan, chitosan, ulvan, fucoidan, alginate, pectin, heparin and hyaluronic acid, or a mixture thereof.

[0501] Preferably, the polysaccharide is obtained by oxidation of inulin or starch, more preferably by oxidation of inulin.

[0502] According to one embodiment, the polysaccharide is obtained by oxidizing inulin by a reactive extrusion process in the presence of hydrogen peroxide.

[0503] The polysaccharide chains before and after oxidation preferably have a weight-average molecular weight ranging from 400 to 15 000 000, better still from 500 to 10 000 000 and more particularly from 500 to 50 000 g / mol.

[0504] The most particularly preferred polysaccharides in the present invention are those corresponding to formula (II), in which: P represents a polymer chain derived from inulin or starch; m is the degree of substitution of the polysaccharide by one or more aldehyde groups (DS(CHO)), which is in the range of 0.005 to 2.5; n is the degree of substitution of the polysaccharide by one or more carboxyl groups (DS(COOX)), which is in the range of 0.001 to 2.

[0505] Even more preferably, the group P of formula (II) as defined previously represents a polymer chain derived from inulin; m is the degree of substitution of the polysaccharide by one or more aldehyde groups (DS(CHO)) in the range of 0.01 to 1; n is the degree of substitution of the polysaccharide by one or more carboxyl groups (DS(COOX)) in the range of 0.01 to 2.

[0506] More preferably, the organic acid is selected from the compounds of formula (I) as defined previously, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof.

[0507] Even more preferably, the organic acid is selected from the following compounds 1 to 40, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof, and mixtures thereof:

[0508]

[0509]

[0510]

[0511]

[0512]

[0513]

[0514] More preferably, the organic acid is selected from Compounds 1, 2, 6, 7, 8, 9, 10, 15, 18, 20, 22, 23, 26, 28 and 31, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0515] Even more preferably, the organic acid is selected from Compounds 1, 2, 20, 26, 28 and 31, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof.

[0516] Still more preferably, the organic acid is selected from the group consisting of Compound 26, a salt thereof, an optical isomer thereof, a geometric isomer thereof, a tautomer thereof, a solvate thereof, and a mixture thereof.

[0517] According to a preferred embodiment of the present invention, the organic acid is selected from the compound of formula (I), its salt, its optical isomer, its geometric isomer, its tautomer, its solvate and its mixture, wherein X represents a carbon atom, A represents a group -CR 1 (R 2 )p(R 3 ), where p = 1, R 1 Represents a hydrogen atom or group -NR a -CO-R c , where R a and R c As defined previously, preferably R a indicates a hydrogen atom and R c Indicates alkyl group, R 2 represents a hydrogen atom or a hydroxyl group (-OH), R 3 represents a (hetero)cyclic group which is optionally substituted by one or more identical or different groups selected from the group consisting of: (C1-C6)alkyl, especially (C1-C4)alkyl such as methyl, alkylcarbonyl-(CO)-R c , alkylcarbonyloxy-O-CO-R c , alkoxycarbonyl-CO-OR c , -OH, (C1-C6)alkoxy, especially (C1-C4)alkoxy such as methoxy or -C(O)OH, or R 3 represents an alkyl or alkenyl group, wherein:

[0518] - optionally substituted by one or more identical or different groups selected from: -C(O)OH group; hydroxyl group (-OH); and / or

[0519] -optionally inserted with -CO-, -O-CO-, -(CO)-O-, -NR a -(CO)-, -(CO)-NR a -, where R a As defined previously, preferably there is optionally intervening -CO-, -O-CO-, -(CO)-O-.

[0520] According to a specific embodiment, the organic acid is selected from the compounds of formula (I), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, wherein X represents a carbon atom, A represents a group -CR 1 (R 2 )(R 3 ), where R 1 represents a hydrogen atom, R 2 represents a hydrogen atom or a hydroxyl group (-OH), R 3 represents a (hetero)cyclic group, preferably a group based on aromatic hydrocarbons such as phenyl, which is optionally substituted by one or more identical or different groups selected from the group consisting of: (C1-C6)alkyl, especially (C1-C4)alkyl, such as methyl, (C1-C6)alkoxy, especially (C1-C4)alkoxy, such as methoxy or -C(O)OH, or R 3 represents an alkyl or alkenyl group, which is optionally interrupted by -NR a -(CO)- or -(CO)-NR a -, where R a As defined previously, preferably not inserted, and / or optionally substituted with hydroxyl. According to this embodiment, the organic acid is preferably selected from compounds 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 32, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, more preferably selected from compounds 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, even more particularly selected from compounds 1, 2, 6, 7, 8, 9, 10, 15, their salts, their optical isomers, their solvates and mixtures thereof.

[0521] According to another preferred embodiment of the present invention, the organic acid is selected from the compound of formula (I), its salt, its optical isomer, its geometric isomer, its tautomer, its solvate and its mixture, wherein X represents a carbon atom, A represents a group -CR 1 (R2 )(R 3 ), where R 1 Represents a hydrogen atom or group -NR a -CO-R c , where R a and R c As defined previously, preferably R a represents a hydrogen atom and R c represents an alkyl group, R 2 represents a hydrogen atom or a hydroxyl group (-OH), R 3 represents an alkyl or alkenyl group which is substituted by one or more -C(O)OH groups, in particular by one or two -C(O)OH groups, and:

[0522] - optionally substituted with one or more hydroxyl (-OH) groups; and / or

[0523] -optionally interspersed with -CO-, -O-CO-, -(CO)-O-, -(CO)-NR a -, where R a As defined previously.

[0524] According to this embodiment, the organic acid is preferably selected from compounds 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, more preferably selected from compounds 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof, even more preferably selected from compounds 18, 20, 22, 23, 26, 28, 31, most preferably selected from compounds 20, 26, 31, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof.

[0525] According to another embodiment of the present invention, the organic acid is selected from the compound of formula (I), its salt, its optical isomer, its geometric isomer, its tautomer, its solvate and its mixture, wherein X represents a carbon atom, A represents a group -CR 1 (R 3 ), where R 1 and R 3 Together with the carbon atoms carrying them, they form a (hetero)cyclic group, preferably an aromatic group, which is optionally substituted by one or more identical or different groups selected from the group consisting of: (C1-C6)alkyl, especially (C1-C4)alkyl such as methyl, alkylcarbonyl-(CO)-R c, alkylcarbonyloxy-O-CO-R c , alkoxycarbonyl-CO-OR c , -OH, (C1-C6) alkoxy, especially (C1-C4) alkoxy such as methoxy, -C(O)OH, wherein R c As defined previously. According to this embodiment, the organic acid is preferably selected from compounds 34, 36, 37, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof.

[0526] When organic acids e) are present in the composition, they are preferably present in a content ranging from 0.01% to 50% by weight, more preferably ranging from 0.1% to 30% by weight, even more preferably ranging from 0.02% to 15% by weight relative to the total weight of the composition.

[0527] Compound iv') is preferably present in the composition in a total content ranging from 0.01% to 50% by weight, more preferably ranging from 0.1% to 30% by weight, even more preferably ranging from 0.2% to 15% by weight relative to the total weight of the composition.

[0528] Compound iv) and compound iv') are present in the composition in a total content preferably ranging from 0.01% to 70% by weight, more preferably ranging from 1% to 60% by weight, even more preferably ranging from 10% to 60% by weight, calculated on the weight of iv) and iv') relative to the total weight of the composition.

[0529] The composition preferably comprises a total content of magnesium carbonate of less than 5% by weight, more preferably less than 1% by weight, even more preferably less than 0.1% by weight, most preferably less than 0.01% by weight and better still less than 0.001% by weight.

[0530] According to a particularly preferred embodiment, the composition contains no magnesium carbonate.

[0531] The composition preferably comprises a total persulfate content of less than 0.1 % by weight, more preferably less than 0.01 % by weight, even more preferably less than 0.001 % by weight.

[0532] According to a particularly preferred embodiment, the composition is free of persulfates.

[0533] According to a particular embodiment, the composition further comprises v) one or more dyes preferably chosen from direct dyes, oxidation dyes and mixtures thereof.

[0534] When dyes are present, they are preferably present in a total content ranging from 0.001% to 10% by weight, preferably from 0.01% to 4% by weight and more preferably from 0.1% to 1% by weight relative to the total weight of the composition.

[0535] Oxidation dyes

[0536] Oxidation dyes are generally chosen from one or more oxidation bases, optionally in combination with one or more coupling agents (also called couplers).

[0537] Oxidation base

[0538] The composition may optionally comprise one or more oxidation bases, advantageously chosen from those conventionally used in dyeing keratin fibres.

[0539] For example, the oxidation base is selected from p-phenylenediamine, bis(phenyl)alkylenediamine, p-aminophenol, o-aminophenol and heterocyclic bases, and the corresponding addition salts.

[0540] Among the p-phenylenediamines, mention may be made, for example, of p-phenylenediamine, p-toluenediamine, 2-chloro-p-phenylenediamine, 2,3-dimethyl-p-phenylenediamine, 2,6-dimethyl-p-phenylenediamine, 2,6-diethyl-p-phenylenediamine, 2,5-dimethyl-p-phenylenediamine, N,N-dimethyl-p-phenylenediamine, N,N-diethyl-p-phenylenediamine, N,N-dipropyl-p-phenylenediamine, 4-amino-N,N-diethyl-3-methylaniline, N,N-bis(β-hydroxyethyl)-p-phenylenediamine, 4-N,N-bis(β-hydroxyethyl)amino-2-methylaniline, 4-N,N-bis(β-hydroxyethyl)amino-2-chloroaniline, 2-β-hydroxyethyl-p-phenylenediamine, 2-methoxymethyl-p-phenylenediamine, 2-fluoro-p-phenylenediamine, Phenylenediamine, 2-isopropyl-p-phenylenediamine, N-(β-hydroxypropyl)-p-phenylenediamine, 2-hydroxymethyl-p-phenylenediamine, N,N-dimethyl-3-methyl-p-phenylenediamine, N-ethyl-N-(β-hydroxyethyl)-p-phenylenediamine, N-(β,γ-dihydroxypropyl)-p-phenylenediamine, N-(4'-aminophenyl)-p-phenylenediamine, N-phenyl-p-phenylenediamine, 2-β-hydroxyethyloxy-p-phenylenediamine, 2-β-acetylaminoethyloxy-p-phenylenediamine, N-(β-methoxyethyl)-p-phenylenediamine, 4-aminophenylpyrrolidine, 2-thienyl-p-phenylenediamine, 2-β-hydroxyethylamino-5-aminotoluene and 3-hydroxy-1-(4'-aminophenyl)pyrrolidine, and corresponding addition salts with acids.

[0541] Among the p-phenylenediamines mentioned above, p-phenylenediamine, p-toluenediamine, 2-isopropyl-p-phenylenediamine, 2-β-hydroxyethyl-p-phenylenediamine, 2-β-hydroxyethyloxy-p-phenylenediamine, 2,6-dimethyl-p-phenylenediamine, 2,6-diethyl-p-phenylenediamine, 2,3-dimethyl-p-phenylenediamine, N,N-bis(β-hydroxyethyl)-p-phenylenediamine, 2-chloro-p-phenylenediamine and 2-β-acetylaminoethyloxy-p-phenylenediamine, and the corresponding addition salts with acids are particularly preferred.

[0542] Among the bis(phenyl)alkylenediamines, mention may be made, for example, of N,N′-bis(β-hydroxyethyl)-N,N′-bis(4′-aminophenyl)-1,3-diaminopropanol, N,N′-bis(β-hydroxyethyl)-N,N′-bis(4′-aminophenyl)ethylenediamine, N,N′-bis(4-aminophenyl)tetramethylenediamine, N,N′-bis(β-hydroxyethyl)-N,N′-bis(4-aminophenyl)tetramethylenediamine, N,N′-bis(4-methylaminophenyl)tetramethylenediamine, N,N′-bis(ethyl)-N,N′-bis(4′-amino-3′-methylphenyl)ethylenediamine and 1,8-bis(2,5-diaminophenoxy)-3,6-dioxaoctane, and the corresponding addition salts.

[0543] Among the p-aminophenols, there may be mentioned, for example, p-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 4-amino-3-chlorophenol, 4-amino-3-hydroxymethylphenol, 4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol, 4-amino-2-(β-hydroxyethylaminomethyl)phenol and 4-amino-2-fluorophenol, and the corresponding addition salts with acids.

[0544] Among the o-aminophenols, mention may be made, for example, of 2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol and 5-acetamido-2-aminophenol, and the corresponding addition salts.

[0545] Among the heterocyclic bases, mention may be made, for example, of pyridine, pyrimidine and pyrazole derivatives.

[0546] Among the pyridine derivatives, mention may be made of the compounds described, for example, in patents GB 1 026 978 and GB 1 153 196, such as 2,5-diaminopyridine, 2-(4-methoxyphenyl)amino-3-aminopyridine and 3,4-diaminopyridine, and the corresponding addition salts.

[0547] Other pyridine oxidation bases useful in the present invention are the 3-aminopyrazolo[1,5-a]pyridine oxidation bases or the corresponding addition salts described, for example, in patent application FR 2 801 308. Examples that may be mentioned include pyrazolo[1,5-a]pyridin-3-ylamine, 2-acetylaminopyrazolo[1,5-a]pyridin-3-ylamine, 2-(morpholin-4-yl)pyrazolo[1,5-a]pyridin-3-ylamine, 3-aminopyrazolo[1,5-a]pyridine-2-carboxylic acid, 2-methoxypyrazolo[1,5-a]pyridin-3-ylamine, (3-aminopyrazolo[1,5-a]pyridin-7-yl)methoxypyrazolo[1,5-a]pyridin-3-ylamine, 2-(morpholin-4-yl)pyrazolo[1,5-a]pyridin-3-ylamine, 3-aminopyrazolo[1,5-a]pyridine-2-carboxylic acid, 2-methoxypyrazolo[1,5-a]pyridin-3-ylamine, 3-aminopyrazolo[1,5-a]pyridin-7-yl)methoxypyrazolo[1,5-a]pyridin-3-ylamine, 3-aminopyrazolo[1,5-a]pyridin-2-carboxylic acid, 3-aminopyrazolo[1,5-a]pyridin-3-ylamine, 3-aminopyrazolo[1,5-a]pyridin-7-yl)methoxypyrazolo[1,5-a]pyridin-3-ylamine, 3-amino ... alcohol, 2-(3-aminopyrazolo[1,5-a]pyridin-5-yl)ethanol, 2-(3-aminopyrazolo[1,5-a]pyridin-7-yl)ethanol, (3-aminopyrazolo[1,5-a]pyridin-2-yl)methanol, 3,6-diaminopyrazolo[1,5-a]pyridine, 3,4-diaminopyrazolo[1,5-a]pyridine, pyrazolo[1,5-a]pyridine-3,7-diamine, 7-(morpholine-4- 2-[(3-aminopyrazolo[1,5-a]pyridin-7-yl)(2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[1,5-a]pyridin-7-yl)(2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[1,5-a]pyridin-3-ylamine, 3-(morpholin-4-yl)pyrazolo[1,5-a]pyridin-3-ylamine, 2-[(3-aminopyrazolo[1,5-a]pyridin-5-yl)(2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[1,5-a]pyridin-7-yl)(2-hydroxyethyl)amino]ethanol, 3-(morpholin-4-yl)pyrazolo[1,5-a]pyridin-3-ylamine, 2-[(3-aminopyrazolo[1,5-a]pyridin-5-yl)(2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[1,5-a]pyridin-7-yl)(2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[1,5-a]pyridin-3-ylamine ... oxazolo[1,5-a]pyridine-5-ol, 3-aminopyrazolo[1,5-a]pyridine-4-ol, 3-aminopyrazolo[1,5-a]pyridine-6-ol, 3-aminopyrazolo[1,5-a]pyridine-7-ol, 2-β-hydroxyethoxy-3-aminopyrazolo[1,5-a]pyridine and 2-(4-dimethylpiperazinium-1-yl)-3-aminopyrazolo[1,5-a]pyridine; and the corresponding addition salts.

[0548] More particularly, the oxidation bases useful in the present invention are chosen from 3-aminopyrazolo[1,5-a]pyridines preferably substituted at carbon atom 2 by:

[0549] a) (di)(C1-C6)(alkyl)amino, the alkyl group may be substituted with at least one hydroxyl, amino or imidazolium group;

[0550] b) an optionally cationic 5- to 7-membered heterocycloalkyl group containing 1 to 3 heteroatoms, which is optionally substituted by one or more (C1-C6)alkyl groups, such as a di(C1-C4)alkylpiperazinium group; or

[0551] c) (C1-C6)alkoxy optionally substituted by one or more hydroxy groups, such as β-hydroxyalkoxy, and the corresponding addition salts.

[0552] Among the pyrimidine derivatives, mention may be made of the compounds described, for example, in patents DE 2359399; JP 88-169571; JP 05-63124; EP 0770375 or in patent application WO 96 / 15765, such as 2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triaminopyrimidine and addition salts thereof and also their tautomeric forms in the presence of tautomeric equilibrium.

[0553] Among the pyrazole derivatives, mention may be made of the pyrazoles described in patents DE 3843892 and DE 4133957 and in patent applications WO 94 / 08969, WO 94 / 08970, FR-A-2 733 749 and DE 195 43 988, such as 4,5-diamino-1-methylpyrazole, 4,5-diamino-1-(β-hydroxyethyl)pyrazole, 3,4-diaminopyrazole, 4,5-diamino-1-(4'-chlorobenzyl)pyrazole, 4,5-diamino-1,3-dimethylpyrazole, 4,5-diamino-3-methyl-1-phenylpyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, 4-amino-1,3-dimethyl-5-hydrazinopyrazole, 1-benzyl-4,5-diamino-3-methylpyrazole, 4,5-diamino-3-tert-butyl-1-methylpyrazole, 4,5-diamino-1-(β-hydroxyethyl)-3-methylpyrazole, 4,5 -diamino-1-ethyl-3-methylpyrazole, 4,5-diamino-1-ethyl-3-(4'-methoxyphenyl)pyrazole, 4,5-diamino-1-ethyl-3-hydroxymethylpyrazole, 4,5-diamino-3-hydroxymethyl-1-methylpyrazole, 4,5-diamino-3-hydroxymethyl-1-isopropylpyrazole, 4,5-diamino-3-methyl-1-isopropylpyrazole, 4-amino-5-(2'-aminoethyl)amino-1,3-dimethylpyrazole, 3,4,5-triaminopyrazole, 1-methyl-3,4,5-triaminopyrazole, 3,5-diamino-1-methyl-4-methylaminopyrazole and 3,5-diamino-4-(β-hydroxyethyl)amino-1-methylpyrazole, and corresponding addition salts. 4,5-diamino-1-(β-methoxyethyl)pyrazole can also be used.

[0554] Preference will be given to using 4,5-diaminopyrazole and even more preferably 4,5-diamino-1-(β-hydroxyethyl)pyrazole and / or the corresponding salts.

[0555] Pyrazole derivatives that may also be mentioned include diamino-N,N-dihydropyrazolopyrazolones and in particular those described in patent application FR-A-2 886 136, such as the following compounds and the corresponding addition salts: 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-ethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-a]pyrazol-1-one, 2-amino-3-(pyrrolidin-1-yl)-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 4,5-diamino-1,2-dimethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-diethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-bis(2-hydroxyethyl) -1,2-dihydropyrazol-3-one, 2-amino-3-(2-hydroxyethyl)amino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-dimethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2,3-diamino-5,6,7,8-tetrahydro-1H,6H-pyridazin-1-one -a]pyrazol-1-one, 4-amino-1,2-diethyl-5-(pyrrolidin-1-yl)-1,2-dihydropyrazol-3-one, 4-amino-5-(3-dimethylaminopyrrolidin-1-yl)-1,2-diethyl-1,2-dihydropyrazol-3-one and 2,3-diamino-6-hydroxy-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one.

[0556] Preference will be given to using 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and / or the corresponding salts.

[0557] Heterocyclic bases to be used with preference are 4,5-diamino-1-(β-hydroxyethyl)pyrazole and / or 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and / or the corresponding salts.

[0558] Color former

[0559] The composition may optionally comprise one or more couplers, advantageously chosen from those conventionally used in dyeing keratin fibres.

[0560] Among these couplers, mention may in particular be made of meta-phenylenediamine, meta-aminophenol, meta-diphenol, naphthalene-based couplers and heterocyclic couplers, and also the corresponding addition salts.

[0561] Mention may be made, for example, of 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 2,4-diamino-1-(β-hydroxyethoxy)benzene, 2-amino-4-(β-hydroxyethylamino)-1-methoxybenzene, 1,3-diaminobenzene, 1,3-bis(2,4-diaminophenoxy)propane, 3-ureidoaniline, 3-ureido-1-dimethylaminobenzene, sesamol, 1-β-hydroxyethylamino-3,4-methylenedioxybenzene, α-naphthol, 2-methyl-1-naphthol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 2-amino-3-hydroxypyridine, 6-hydroxybenzomorpholine, 3,5-diamino-2,6-dimethoxy- pyridine, 1-N-(β-hydroxyethyl)amino-3,4-methylenedioxybenzene, 2,6-bis(β-hydroxyethylamino)toluene, 6-hydroxyindoline, 2,6-dihydroxy-4-methylpyridine, 1-H-3-methylpyrazol-5-one, 1-phenyl-3-methylpyrazol-5-one, 2,6-dimethylpyrazolo[1,5-b]-1,2,4-triazole, 2,6-dimethyl[3,2-c]-1,2,4-triazole and 6-methylpyrazolo[1,5-a]benzimidazole, 2-methyl-5-aminophenol, 5-N-(β-hydroxyethyl)amino-2-methylphenol, 3-aminophenol and 3-amino-2-chloro-6-methylphenol, the corresponding addition salts with acids and the corresponding mixtures.

[0562] In general, the addition salts of oxidation bases and couplers which can be used in the context of the present invention are chosen especially from addition salts with acids such as hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, toluenesulfonates, benzenesulfonates, phosphates and acetates.

[0563] The oxidation bases each advantageously represent from 0.001% to 10% by weight relative to the total weight of the composition, and preferably from 0.005% to 5% by weight relative to the total weight of the composition.

[0564] The couplers, if they are present, each advantageously represent from 0.001% to 10% by weight relative to the total weight of the composition, and preferably from 0.005% to 5% by weight relative to the total weight of the composition.

[0565] Direct dyes

[0566] The composition may also comprise one or more direct dyes.

[0567] The direct dye may be a neutral, cationic or anionic direct dye, preferably a neutral or cationic direct dye.

[0568] The direct dye may be a neutral, cationic or anionic direct dye selected from the group consisting of acridine; acridone; anthraquinone; anthrapyrimidine; anthraquinone; azine; (poly)azo or azo, hydrazone or hydrazone, in particular arylhydrazone; azomethine; benzanthrone; benzimidazole; benzimidazolone; benzindole; benzoxazole; benzopyran; benzothiazole; benzoquinone; bis-isoindoline; carboxanilide; coumarin; cyanines, such as (di)azacarbocyanines, (di)azahemicyanines, hemicyanines or tetraazacarbocyanines; (di)azines; bis-azines; (di)oxazines; (di)thiazines; (di)phenylamines; (di)phenylmethanes; (di)ketopyrrolopyrroles; flavonoids, such as flavanones and Flavonoids; fluridine; formazan; indamide; indanthrone; indigos, thioindigos and pseudoindigos; indophenols; indoanilines; isoindolines; isoindolinones; isovionanthrones; lactones; (poly)methines, such as dimethines of the stilbene or styryl type; naphthalimides; naphthoanilides; naphtholactams; naphthoquinones; nitro, especially nitro(hetero)aromatic compounds; oxadiazoles; oxazines; perillones; perylenes; phenazines; phenoxazines; phenothiazines; phthalocyanines; polyenes / carotenoids; porphyrins; pyranthrones; pyrazoloanthrones; pyrazolones; pyrimidoanthrones; pyronines; quinacridones; quinolines; quinophthalones; squalanes; tetrazolines; thiazines; thiopyronines; triarylmethanes or xanthenes and natural direct dyes. Preferably, the direct dye is selected from anthraquinones, (poly)azos, azomethines and stilbenes, more preferably from anthraquinones.

[0569] Direct dyes can be selected in particular from neutral, cationic or anionic nitrobenzene direct dyes, neutral, cationic or anionic azo direct dyes, neutral, cationic or anionic tetraazapentamethine cyanine dyes, cationic or anionic quinone dyes and in particular neutral, cationic or anionic anthraquinone dyes, neutral, cationic or anionic azine direct dyes, neutral, cationic or anionic triarylmethane direct dyes, neutral, cationic or anionic azomethine direct dyes and natural direct dyes. Preferably, the direct dye is selected from neutral or anionic anthraquinone dyes and stilbenes.

[0570] As neutral, anionic or cationic direct dyes which can be used in the present invention, the following may be mentioned: acridine; acridone; anthraquinone; anthrapyrimidine; anthraquinone; azine; (poly)azo, hydrazone or hydrazone, in particular arylhydrazone; azomethine; benzanthrone; benzimidazole; benzimidazolone; benzindole; benzoxazole; benzopyran; benzothiazole; benzoquinone; bisazines; bis-isoindoline; carboxanilides; coumarins; cyanines, such as azacarbocyanines, diazacarbocyanines, diazahemianyanines, hemicyanines or tetraazacarbocyanines; diazines; diketopyrrolopyrroles; dioxazines; diphenylamines; diphenylmethanes; dithiazines; flavonoids, such as flavanones and flavonoids; Ketones; fluoropiperidin; formazan; indamide; indanthrone; indigos and pseudoindigos; indophenols; indoanilines; isoindoline; isoindolinone; isoviolanthrone; lactones; (poly)methines, such as dimethines of the stilbene or styryl type; naphthalimides; naphthoanilides; naphtholactams; naphthoquinones; nitro, especially nitro(hetero)aromatic compounds; oxadiazoles; oxazines; perillones; perylenes; phenazines; phenoxazines; phenothiazines; phthalocyanines; polyenes / carotenoids; porphyrins; pyranthrones; pyrazoloanthrones; pyrazolones; pyrimidoanthrones; pyronines; quinacridones; quinolines; quinophthalones; squalanes; tetrazoles; thiazines; thioindigos; thiopyronines; triarylmethanes or xanthenes.

[0571] Neutral direct dyes

[0572] The direct dye may be a neutral direct dye, preferably selected from the group consisting of hydrazine dyes of the following formulae (IIIa) and (III'a), azo and styryl dyes (IVa), diazo and distyryl dyes (IV'a) and (IV"a), anthraquinone dyes (Va) and azomethine dyes (VIa) and (VI'a), and mixtures thereof:

[0573]

[0574] In formula (IIIa), (III'a), (IVa), (IV'a), (IV"a), (Va), (VIa) and (VI'a):

[0575] ■ Ar represents an aryl group, such as phenyl or naphthyl, which is substituted by at least one electron-donating group, such as i) optionally substituted (C1-C8)alkyl, ii) optionally substituted (C1-C8)alkoxy, iii) (di)(C1-C8)(alkyl)amino, which is optionally substituted on the alkyl group by hydroxy, iv) aryl(C1-C8)alkylamino, v) optionally substituted N-(C1-C8)alkyl-N-aryl(C1-C8)alkylamino, or Ar represents a julolidine group;

[0576] ■ Ar' represents an optionally substituted divalent (hetero)arylene group, such as phenylene, especially p-phenylene, or naphthylene, which is optionally substituted, preferably by one or more (C1-C8)alkyl, hydroxy or (C1-C8)alkoxy groups;

[0577] ■Ar" denotes a (hetero)aryl group, which is optionally substituted, preferably at least, by i) an electron withdrawing group such as nitro, nitroso, -C(X)-X'-R' or ii) (di)(C1-C6)(alkyl)amino, iii) hydroxy, iv) (C1-C6)alkoxy; the (hetero)aryl group is in particular selected from imidazolyl, triazolyl, indolyl or pyridyl or phenyl, which is optionally substituted by at least one group selected from nitro, nitroso and amino, preferably in the para position of the phenyl group;

[0578] ■ X, X' and X", which may be identical or different, represent an oxygen or sulfur atom, or a group NR", preferably an oxygen atom;

[0579] ■R 1 , R 2 , R 3 and R 4 , which may be the same or different, represent a hydrogen or halogen atom, or a group selected from the group consisting of a hydroxyl group, a thiol group, a (C1-C4) alkyl group, a (C1-C4) alkoxy group, a (di) (C1-C4) (alkyl) amino group, a nitro group and a nitroso group;

[0580] ■R' and R" represent (C1-C4) alkyl;

[0581] ■R a and R b , which may be the same or different, represent a hydrogen atom or a (C1-C8)alkyl group, which is optionally preferably substituted by a hydroxyl group;

[0582] Or, as a variant, the substituent R a and Ar" and / or R b and the substituents of Ar and / or R a With R b Together with the atoms that carry them, they form a (hetero)cycloalkyl group;

[0583] In particular, R a and R b represents a hydrogen atom or a (C1-C4) alkyl group, which may be optionally substituted by a hydroxyl group;

[0584] ■ T and T', which may be the same or different, represent a group C(R a ) or N, preferably N; and

[0585] ■ L represents a divalent group -ALK-, -C(X)-ALK-, -ALK-C(X)- or -C(X)-ALK-C(X')-, wherein ALK represents a linear or branched (C1-C6)alkylene group, such as methylene, and X and X' are as previously defined;

[0586] ■R 22 , R 23 , R 24 , R 25 , R 26 and R 27 , which may be the same or different, represent a hydrogen or halogen atom, or a group selected from:

[0587] -(C1-C6)alkyl;

[0588] -Hydroxy, thiol;

[0589] - (C1-C6) alkoxy, (C1-C6) alkylthio;

[0590] - an aryloxy group or an arylthio group;

[0591] -Aryl(C1-C6)(alkyl)amino;

[0592] -(di)(C1-C6)(alkyl)amino;

[0593] -(di)(hydroxy(C1-C6)alkyl)amino;

[0594] ■Z' represents a hydrogen atom or a group NR 28 R 29 , where R 28 and R 29 , which may be the same or different, represent a hydrogen atom or a group selected from:

[0595] -(C1-C6)alkyl;

[0596] - polyhydroxy (C1-C6) alkyl groups such as hydroxyethyl;

[0597] - aryl, which is optionally substituted by one or more groups, in particular i) (C1-C6) alkyl; iii) R o -C(X)-X'-、R o -X'-C(X)-、R o -X'-C(X)-X"-, where R o represents a (C1-C6)alkyl group and X, X' and X" are as previously defined; iv) a sulfonate group;

[0598] - cycloalkyl; especially cyclohexyl;

[0599] ■ Z represents a group selected from hydroxyl and NR'28 R' 29 A group in which R' 28 and R' 29 , which may be the same or different, represents R as defined previously 28 and R 29 The same atoms or groups.

[0600] The direct dye of formula (IV"a) preferably has the formula (IV"'a)

[0601]

[0602] In formula (IV"'a):

[0603] ■R 1 and R 3 , which may be the same or different, preferably the same, represent a hydrogen atom, a (C1-C4) alkyl group such as a methyl group or a sugar such as a glucosyl group, preferably a hydrogen atom;

[0604] ■R 2 and R 4 , which may be identical or different, preferably identical, represent a hydrogen atom, a (C1-C4)alkyl group or a (C1-C4)alkoxy group or an -O-sugar group such as -O-glucosyl, preferably a (C1-C4)alkoxy group; such as a methoxy group;

[0605] ■ X, which may be identical or different, preferably identical, represents an oxygen or sulfur atom or NR, in which R represents a hydrogen atom or group, preferably an oxygen atom;

[0606] ■ALK represents a (C1-C4) alkylene group, such as a methylene group or an ethylene group, preferably a methylene group.

[0607] The direct dyes of formula (IV"a) may be derived from curcumin, demethoxycurcumin and bis-demethoxycurcumin.

[0608] Preferably, the direct dye is selected from direct dyes of formula (IV"a) and formula (IV"'a) as defined previously, and mixtures thereof.

[0609] According to a particularly preferred embodiment, the direct dye is a neutral direct dye selected from the following compounds (A) to (G) and mixtures thereof:

[0610]

[0611] It is preferably selected from compounds (E), (F) and (G) and mixtures thereof, more preferably selected from compounds (E) and (G) and mixtures thereof.

[0612] Cationic direct dyes

[0613] The direct dyes may be chosen from cationic direct dyes or those generally referred to as "basic dyes" because of their affinity for acidic substances, in particular those containing at least one endocyclic or exocyclic cationic or cationizable group in their structure.

[0614] As cationic azo dyes that can be used in the present invention, there can be mentioned in particular cationic dyes described in Kirk-Othmer's Encyclopedia of Chemical Technology, "Dyes, Azo", J. Wiley & Sons, updated on April 19, 2010.

[0615] Mention may also be made of the cationic azo dyes described in patent applications WO 95 / 15144, WO 95 / 01772 and EP 714954.

[0616] Mention may also be made of the cationic azo dyes described in the Colour Index International, 3rd edition, especially the following compounds: Basic Red 22; Basic Red 76; Basic Yellow 57; Basic Brown 16; Basic Brown 17.

[0617] Among the cationic quinone dyes, those mentioned in the International Colour Index, 3rd edition are suitable for use, and among these the following dyes may especially be mentioned: Basic Blue 22; Basic Blue 99.

[0618] Among the azine dyes suitable for use, mention may be made of those listed in the International Colour Index, 3rd edition, for example the following dyes: Basic Blue 17, Basic Red 2.

[0619] Among the cationic triarylmethane dyes that can be used according to the invention, mention may be made of the following dyes, in addition to those listed in the International Colour Index, 3rd edition: Basic Green 1, Basic Violet 3, Basic Violet 14, Basic Blue 7, Basic Blue 26.

[0620] Mention may also be made of the direct dyes described in documents US Pat. No. 5,888,252, EP 1,133,975, WO 03 / 029359, EP 860,636, WO 95 / 01772, WO 95 / 15144 and EP 714,954.

[0621] Mention may also be made of those listed in the encyclopedia "The Chemistry of Synthetic Dyes", 1952, Academic Press, Volumes 1 to 7, in the chapter "Dyes and Dye Intermediates" of the "Kirk-Othmer Encyclopaedia of Chemical Technology", 1993, Wiley and Sons, and in different chapters of "Ullmann's Encyclopaedia of Industrial Chemistry", 7th edition, Wiley and Sons.

[0622] Preferably, the cationic direct dyes are selected from those arising from azo and hydrazono type dyes.

[0623] Cationic direct dyes may be cationic azo dyes as described in EP 850 636, FR 2 788 433, EP 920 856, WO 99 / 48465, FR 2 757 385, EP 850 637, EP 918 053, WO 97 / 44004, FR 2 570 946, FR 2 285 851, DE 2 538 363, FR 2 189 006, FR 1 560 664, FR 1 540 423, FR 1 567 219, FR 1 516 943, FR 1 221 122, DE 4 220 388, DE 4 137 005, WO01 / 66646, US 5 708 151, WO 95 / 01772, WO 515 144, GB 1 195 386, US 3 524 842, US 5879 413, EP 1 062 940, EP 1 133 976, GB 738 585, DE 2 527 638, FR 2 275 462、GB1974-27645、Acta Histochem.[Acta Histochemica Sinica](1978),61(1),48-52; Tsitologiya[Cytology](1968),10(3),403-5; Zh.Obshch.Khim.(1970),40(1),195-202; Ann.Chim.(Rome)[Annals of Chemistry (Rome)](1975),65(5-6),305-14; Journal of the Chinese Chemical Society

[0624] (Taipei, China) (1998), 45(1), 209-211; Rev. Roum. Chim. (1988), 33(4), 377-83; Text. Res. J. [Textile Research Journal] (1984), 54(2), 105-7; Chim. Ind. (Milan) [Chemical Industry (Milan)] (1974), 56(9), 600-3; Khim. Tekhnol. [Chemical Technology] (1979), 22(5), 548-53; Ger. Monatsh. Chem. [German Chemical Monthly] (1975), 106(3), 643-8; MRL Bull. Res. Dev. [MRL Research and Development Bulletin] (1992), 6(2), 21-7; Lihua Jianyan, Huaxue Fence [Physical and Chemical Testing, Chemical Section] (1993), 29(4), 233-4; Dyes Pigm. [Dyes and Pigments] (1992), 19(1), 69-79; Dyes Pigm. [Dyes and Pigments] (1989), 11(3), 163-72.

[0625] Preferably, the cationic direct dyes contain quaternary ammonium groups; more preferably, the cationic charge is intracyclic. These cationic groups are, for example, the following cationic groups:

[0626] - with (di / tri) (C1-C8) alkylammonium exocyclic charge, or

[0627] - having an intracyclic charge, such as a cationic heteroaryl group selected from the group consisting of acridinium, benzimidazolium, benzobistriazolium, benzopyrazolium, benzopyridazinium, benzoquinolinium, benzothiazolium, benzotriazolium, benzoxazolium, bipyridylium, bis-tetrazolium, dihydrothiazolium, imidazopyridinium, imidazolium, indolium, isoquinolinium, naphthoimidazolium, naphthooxazolium, naphthopyrazolium, oxadiaz ...

[0063] The oxazolium, oxazolium, oxazolopyridinium, oxonium, phenazinium, phenoxazolium, pyrazinium, pyrazolium, pyrazolyltriazolium, pyridinium, pyridoimidazolium, pyrrolium, pyrylium, quinolinium, tetrazolium, thiadiazolium, thiazolium, thiazolopyridinium, thiazolylimidazolium, thiopyrylium, triazolium or xanthenium.

[0628] Mention may be made of the following cationic hydrazono direct dyes of formulae (IIb) and (IIIb) and cationic azo direct dyes of formulae (IVb) and (Vb):

[0629] Het + -C(R a )=NN(R b )-Ar Q- (IIb);

[0630] Het + -N(R a )-N=C(R b )-Ar Q - (IIIb);

[0631] Het + -N=N-Ar Q - (IVb);

[0632] Ar + -N=N-Ar”,Q - (Vb);

[0633] In formulae (IIb) to (Vb):

[0634] ■Het + represents a cationic heteroaryl group preferably carrying an intra-ring cationic charge, such as imidazolium, indolium or pyridinium, which is optionally preferably substituted by at least one (C1-C8)alkyl group, such as methyl;

[0635] ■Ar + represents an aryl group, such as phenyl or naphthyl, carrying an exocyclic cationic charge, preferably ammonium, in particular tri(C1-C8)alkylammonium, such as trimethylammonium;

[0636] ■ Ar represents an aryl group, in particular a phenyl group, which is optionally substituted, preferably by one or more electron-donating groups, such as i) optionally substituted (C1-C8)alkyl, ii) optionally substituted (C1-C8)alkoxy, iii) (di)(C1-C8)(alkyl)amino, which is optionally substituted on the alkyl group by hydroxy, iv) aryl(C1-C8)alkylamino, v) optionally substituted N-(C1-C8)alkyl-N-aryl(C1-C8)alkylamino, or, alternatively, Ar represents a julolidine group;

[0637] ■Ar" represents an optionally substituted (hetero)aryl group, such as phenyl or pyrazolyl, which is optionally substituted, preferably by one or more (C1-C8)alkyl, hydroxy, (di)(C1-C8)(alkyl)amino, (C1-C8)alkoxy or phenyl;

[0638] ■R a and R b , which may be the same or different, represent a hydrogen atom or a (C1-C8)alkyl group, which is optionally preferably substituted by a hydroxyl group;

[0639] ■ Alternatively, the substituent R a With Het + The substituents and / or R b and the substituents of Ar and / or Ra With R b Together with the atoms that carry them, they form a (hetero)cycloalkyl group; in particular, R a and R b represents a hydrogen atom or a (C1-C4)alkyl group which is optionally substituted by a hydroxyl group;

[0640] ■Q - represents an anionic counterion such as a halide, alkyl sulfate or alkyl sulfonate.

[0641] In particular, mention may be made of azo and hydrazono direct dyes with an intracyclic cationic charge of formula (IIb) to (Vb) as defined previously. More particularly, mention may be made of cationic direct dyes of formula (IIb) to (Vb) with an intracyclic cationic charge described in patent applications WO 95 / 15144, WO 95 / 01772 and EP714954.

[0642] Preferably, the following direct dyes may be mentioned:

[0643]

[0644] In formula (II-1) and (IV-1):

[0645] ■R 1 represents a (C1-C4)alkyl group such as methyl;

[0646] ■R 2 and R 3 , which may be the same or different, represent a hydrogen atom or a (C1-C4)alkyl group, such as a methyl group;

[0647] ■R 4 represents a hydrogen atom or an electron-donating group, such as optionally substituted (C1-C8)alkyl, optionally substituted (C1-C8)alkoxy, or (di)(C1-C8)(alkyl)amino optionally substituted on the alkyl group by hydroxy; in particular, R 4 It is a hydrogen atom;

[0648] ■ Z represents a CH group or a nitrogen atom, preferably CH,

[0649] ■Q - is an anionic counterion as defined previously, in particular a halide such as chloride or an alkyl sulfate such as methyl sulfate or mesyl.

[0650] In particular, the dyes of formula (II-1) and (IV-1) are selected from Basic Red 51, Basic Yellow 87 and Basic Orange 31 or derivatives thereof:

[0651]

[0652] wherein Q' is an anionic counterion as defined previously, in particular a halide such as chloride or an alkyl sulfate such as methyl sulfate or mesyl.

[0653] Fluorescent dyes

[0654] The direct dye may be selected from fluorescent direct dyes.

[0655] As examples of fluorescent dyes that can be used in the present invention, mention may be made of neutral, anionic or cationic dyes selected from the group consisting of acridine, acridone, benzanthrone, benzimidazole, benzimidazolone, benzindole, benzoxazole, benzopyran, benzothiazole, coumarin, difluoro{2-[(2H-pyrrol-2-ylidene-kN)methyl]-1H-pyrrolato-kN}borane, Diketopyrrolopyrroles, fluoroidines, (poly)methines (especially cyanines and styryls / hemicyanines), naphthalimides, naphthoanilides, naphthylamines (e.g. dansyl), oxadiazoles, oxazines, perillones, perylenes, polyenes / carotenoids, squalanes, stilbenes, xanthenes.

[0656] Mention may also be made of the fluorescent dyes described in EP 1 133 975, WO 03 / 029 359, EP 860 636, WO 95 / 01772, WO 95 / 15144 and EP 714 954, as well as those listed in K. Venkataraman's encyclopedia "The Chemistry of Synthetic Dyes", 1952, Academic Press, volumes 1 to 7, the chapter "Dyes and Dye Intermediates" in the "Kirk-Othmer Encyclopaedia of Chemical Technology", 1993, Wiley and Sons, and "Ullmann's Encyclopaedia of Industrial Chemistry", 7th edition, Wiley and Sons. Sons, and the manual circulated on the Internet or in previous printed versions - "A Guide to Fluorescent Probes and Labeling Technologies", 10th edition, Molecular Probes / Invitrogen - Oregon 2005.

[0657] According to a preferred variant, the fluorescent dye is of the cationic polymethine type and comprises at least one quaternary ammonium group, such as those of the following formula (Vb): + -[C(R c )=C(R d )] m’ -Ar,Q -

[0658] In formula (Vb):

[0659] ■W + represents a cationic heterocyclic or heteroaryl group, which in particular comprises a quaternary ammonium group optionally substituted by one or more (C1-C8)alkyl groups, said alkyl group being optionally substituted, in particular, by one or more hydroxyl groups;

[0660] ■ Ar represents an aryl group such as phenyl or naphthyl, which is optionally substituted preferably by: i) one or more halogen atoms such as chlorine or fluorine; ii) one or more (C1-C8)alkyl and preferably C1-C4alkyl such as methyl; iii) one or more hydroxyl groups; iv) one or more (C1-C8)alkoxy groups such as methoxy; v) one or more hydroxy(C1-C8)alkyl groups such as hydroxyethyl; vi) one or more amino or (di)(C1-C8)alkylamino groups, preferably with a C1-C4alkyl moiety optionally substituted by one or more hydroxyl groups, such as (di)hydroxyethylamino; vii) one or more acylamino groups; viii) one or more heterocycloalkyl groups such as piperazinyl, piperidinyl or 5- or 6-membered heteroaryl groups such as pyrrolidinyl, pyridinyl and imidazolinyl;

[0661] ■ m' represents an integer ranging from 1 to 4; preferably, m' is equal to 1 or 2; more preferably, m'=1;

[0662] ■R c and R d , which may be identical or different, represent a hydrogen atom or an optionally substituted (C1-C8)alkyl group, preferably an optionally substituted (C1-C4)alkyl group, or alternatively, R c With W + Adjacency and / or R d and Ar are adjacent to the atoms carrying them to form a (hetero)cycloalkyl group; in particular, R c With W + are adjacent and they form a (hetero)cycloalkyl group, such as cyclohexyl;

[0663] ■Q - is an anionic counterion as defined previously.

[0664] Anionic dyes

[0665] The direct dyes may be chosen from anionic direct dyes or dyes generally referred to as "acid" direct dyes due to their affinity for alkaline substances.

[0666] The term "anionic direct dye" means any direct dye comprising at least one CO2R or SO3R substituent in its structure, wherein R indicates a hydrogen atom or a cation derived from a metal or an amine, or an ammonium ion. Anionic dyes may be selected from direct nitro acid dyes, azo acid dyes, azine acid dyes, triarylmethane acid dyes, indoamine acid dyes, anthraquinone acid dyes, indigoid dyes and natural acid dyes.

[0667] Preferably, the anionic direct dye is an anthraquinone acid dye.

[0668] The direct dye may be an anionic direct dye, which is preferably selected from the dyes of the following formulae (III), (III'), (IV), (IV'), (V), (V'), (VI), (VI'), (VII), (VIII), (IX) and (X) and mixtures thereof:

[0669] a) Diaryl anionic azo dyes of formula (III) or (III') :

[0670]

[0671] In formula (III) and (III'):

[0672] ■R7, R8, R9, R 10 , R'7, R'8, R'9 and R' 10 , which may be the same or different, represent a hydrogen atom or a group selected from:

[0673] -(C1-C6)alkyl;

[0674] - (C1-C6) alkoxy, (C1-C6) alkylthio;

[0675] -Hydroxy, thiol;

[0676] -Nitro, nitroso;

[0677] -R o -C(X)-X'-、R o -X'-C(X)-、R o -X'-C(X)-X"-, where R o represents a hydrogen atom or a (C1-C6)alkyl group or an aryl group such as a phenyl group; X, X' and X", which may be the same or different, represent an oxygen or sulfur atom, or NR, wherein R represents a hydrogen atom or a (C1-C6)alkyl group;

[0678] -(O)2S(O- )-,M + , where M + represents a hydrogen atom or a cationic counterion;

[0679] -(O)CO - -,M + , where M + As previously defined;

[0680] -R"-S(O)2-, wherein R" represents a hydrogen atom, an alkyl group, or an aryl group, a (di)(C1-C6)(alkyl)amino group or an aryl(C1-C6)(alkyl)amino group; preferably a phenylamino group or a phenyl group;

[0681] -R"'-S(O)2-X'-, wherein R"' represents an optionally substituted (C1-C6)alkyl or aryl group, and X' is as previously defined;

[0682] -(di)(C1-C6)(alkyl)amino;

[0683] - aryl(C1-C6)(alkyl)amino, which may be optionally substituted by one or more groups selected from the group consisting of: i) nitro; ii) nitroso; iii) (O)2S(O - )-,M + and iv) (C1-C6) alkoxy, wherein M + As previously defined;

[0684] - optionally substituted heteroaryl; preferably benzothiazolyl;

[0685] - cycloalkyl; especially cyclohexyl;

[0686] -Ar-N=N-, wherein Ar represents an optionally substituted aryl group; preferably optionally substituted with one or more alkyl groups, (O)2S(O - ),M + or a phenyl group substituted with a phenylamino group;

[0687] - or two other adjacent groups R7 and R8 or R8 and R9 or R9 and R 10 together form a fused benzo group A'; and R'7 and R'8 or R'8 and R'9 or R'9 and R' 10 together to form a fused benzo group B'; wherein A' and B' are optionally substituted by one or more groups selected from the following: i) nitro; ii) nitroso; iii) (O) 2S (O - )-,M + iv) hydroxyl; v) mercapto; vi) (di)(alkyl)amino; vii) R o -C(X)-X'-; viii)R o-X'-C(X)-;ix)R o -X'-C(X)-X"-; x) Ar-N=N- and xi) optionally substituted aryl(C1-C6)(alkyl)amino; wherein M + , R o , X, X', X" and Ar are as previously defined;

[0688] ■W represents a sigma bond σ, an oxygen or sulfur atom, or a divalent group i) -NR-, wherein R is as defined above, or ii) a methylene group -C(R a )(R b )-, where R a and R b , which may be the same or different, represent a hydrogen atom or an aromatic group, or alternatively R a and R b Together with the carbon atoms carrying them, they form a spirocycloalkyl group; preferably, W represents a sulfur atom, or R a and R b Together they form a cyclohexyl group;

[0689] It is to be understood that formulae (III) and (III') contain on one of rings A, A', B, B' or C:

[0690] - at least one group (O)2S(O - )-,M' + , where M' + represents a cationic counterion; or

[0691] - at least one group (O)CO - -,M' + , where M' + represents the cationic counterion;

[0692] At least one sodium sulfonate group is preferred.

[0693] As examples of dyes of formula (III), mention may be made of Acid Red 1, Acid Red 4, Acid Red 13, Acid Red 14, Acid Red 18, Acid Red 27, Acid Red 28, Acid Red 32, Acid Red 33, Acid Red 35, Acid Red 37, Acid Red 40, Acid Red 41, Acid Red 42, Acid Red 44, Pigment Red 57, Acid Red 68, Acid Red 73, Acid Red 135, Acid Red 138, Acid Red 18 4, Food Red 1, Food Red 13, Acid Orange 6, Acid Orange 7, Acid Orange 10, Acid Orange 19, Acid Orange 20, Acid Orange 24, Yellow 6, Acid Yellow 9, Acid Yellow 36, Acid Yellow 199, Food Yellow 3, Acid Violet 7, Acid Violet 14, Acid Blue 113, Acid Blue 117, Acid Black 1, Acid Brown 4, Acid Brown 20, Acid Black 26, Acid Black 52, Food Black 1, Food Black 2, Food Yellow 3 or Sunset Yellow;

[0694] And as examples of dyes of formula (III′), mention may be made of: Acid Red 111, Acid Red 134, Acid Yellow 38;

[0695] b) Pyrazolone anionic azo dyes of formula (IV) or (IV') :

[0696]

[0697] In formula (IV) and (IV'):

[0698] ■R 11 , R 12 and R 13 , which may be the same or different, represent a hydrogen or halogen atom, a (C1-C6)alkyl group or -(O)2S(O - ),M + , where M + As previously defined;

[0699] ■R 14 represents a hydrogen atom, a (C1-C6) alkyl group or -C(O)O - ,M + Group, where M + As previously defined;

[0700] ■R 15 represents a hydrogen atom;

[0701] ■R 16 represents an oxo group, in which case R' 16 does not exist, or alternatively, R 15 With R 16 together to form a double bond;

[0702] ■R 17 and R 18 , which may be the same or different, represent a hydrogen atom or a group selected from:

[0703] -(O)2S(O - )-,M + , where M + As previously defined;

[0704] -Ar-OS(O)2-, wherein Ar represents an optionally substituted aryl group; preferably a phenyl group optionally substituted by one or more alkyl groups;

[0705] ■R 19 and R 20 together forming a double bond or an optionally substituted benzo group D';

[0706] ■R' 16 , R'19 and R' 20 , which may be the same or different, represent a hydrogen atom or a (C1-C6) alkyl or hydroxyl group;

[0707] ■R 21 represents a hydrogen atom or a (C1-C6) alkyl group or a (C1-C6) alkoxy group;

[0708] ■R a and R b , which may be the same or different, are as previously defined; preferably, R a represents a hydrogen atom and R b represents an aryl group such as phenyl;

[0709] ■Y represents a hydroxyl group or an oxo group;

[0710] ■ represents a single bond when Y is an oxo group; and represents a double bond when Y represents a hydroxyl group;

[0711] It will be appreciated that formulae (IV) and (IV') contain on one of rings D or E:

[0712] - at least one group (O)2S(O - )-,M' + , where M' + represents a cationic counterion; or

[0713] - at least one group (O)CO - -,M' + , where M' + represents the cationic counterion;

[0714] At least one sodium sulfonate group is preferred.

[0715] As examples of dyes of formula (IV), mention may be made of: Acid Red 195, Acid Yellow 23, Acid Yellow 27, Acid Yellow 76, and as examples of dyes of formula (IV′), mention may be made of: Acid Yellow 17;

[0716] c) Anthraquinone dye of formula (V) or (V'):

[0717]

[0718] In formula (V) and (V'):

[0719] ■R 22 , R 23 , R 24 , R 25 , R 26 and R 27, which may be the same or different, represent a hydrogen or halogen atom, or a group selected from:

[0720] -(C1-C6)alkyl;

[0721] -Hydroxy, thiol;

[0722] - (C1-C6) alkoxy, (C1-C6) alkylthio;

[0723] - optionally substituted aryloxy or arylthio, preferably substituted by one or more alkyl groups selected from (O)2S(O - )-,M + The group substituted, where M + As previously defined;

[0724] - aryl(C1-C6)(alkyl)amino, which may be optionally substituted with one or more selected from alkyl and (O)2S(O - )-,M + The group substituted, where M + As previously defined;

[0725] -(di)(C1-C6)(alkyl)amino;

[0726] -(di)(hydroxy)(C1-C6)(alkyl)amino;

[0727] -(O)2S(O - )-,M + , where M + As previously defined;

[0728] ■Z' represents a hydrogen atom or a group NR 28 R 29 , where R 28 and R 29 , which may be the same or different, represent a hydrogen atom or a group selected from:

[0729] -(C1-C6)alkyl;

[0730] - polyhydroxy (C1-C6) alkyl groups such as hydroxyethyl;

[0731] - aryl, which may be optionally substituted by one or more groups, in particular i) (C1-C6) alkyl, such as methyl, n-dodecyl, n-butyl; ii) (O) 2 S (O-) -, M + , where M + As defined previously; iii) R o -C(X)-X'-、R o -X'-C(X)-、R o -X'-C(X)-X"-, where R o, X, X' and X" are as previously defined; preferably R o represents a (C1-C6)alkyl group;

[0732] - cycloalkyl, especially cyclohexyl;

[0733] ■ Z represents a group selected from hydroxyl and NR' 28 R' 29 A group in which R' 28 and R' 29 , which may be the same or different, represents R as defined previously 28 and R 29 The same atoms or groups;

[0734] It is to be understood that formula (V) and (V') encompass:

[0735] - at least one group (O)2S(O - )-,M' + , where M' + represents a cationic counterion; or

[0736] - at least one group (O)CO - -,M' + , where M' + represents the cationic counterion;

[0737] At least one sodium sulfonate group is preferred.

[0738] As examples of dyes of formula (V), mention may be made of: Acid Blue 25, Acid Blue 43, Acid Blue 62, Acid Blue 78, Acid Blue 129, Acid Blue 138, Acid Blue 140, Acid Blue 251, Acid Green 25, Acid Green 41, Acid Violet 42, Acid Violet 43, Mordant Red 3; EXT Violet No. 2;

[0739] And as examples of dyes of formula (V′), mention may be made of: Acid Black 48;

[0740] d) Nitro dye of formula (VI) or (VI') :

[0741]

[0742] In formula (VI) and (VI'):

[0743] ■R 30 , R 31 and R 32 , which may be the same or different, represent a hydrogen or halogen atom, or a group selected from:

[0744] -(C1-C6)alkyl;

[0745] - (C1-C6)alkoxy optionally substituted by one or more hydroxyl groups or (C1-C6)alkylthio optionally substituted by one or more hydroxyl groups;

[0746] -Hydroxy, thiol;

[0747] -Nitro, nitroso;

[0748] - polyhalo(C1-C6)alkyl;

[0749] -R o -C(X)-X'-、R o -X'-C(X)-、R o -X'-C(X)-X"-, where R o , X, X′ and X″ are as previously defined;

[0750] -(O)2S(O - )-,M + , where M + As previously defined;

[0751] -(O)CO - -,M + , where M + As previously defined;

[0752] -(di)(C1-C6)(alkyl)amino;

[0753] -(di)(hydroxy)(C1-C6)(alkyl)amino;

[0754] - heterocycloalkyl, such as piperidino, piperazino or morpholino;

[0755] In particular, R 30 , R 31 and R 32 represents a hydrogen atom;

[0756] ■R c and R d , which may be the same or different, represent a hydrogen atom or a (C1-C6)alkyl group;

[0757] ■ W is as defined previously; W in particular represents an N(H)-group;

[0758] ■ALK represents a linear or branched divalent C1-C6 alkylene group; in particular, ALK represents a -CH2-CH2- group;

[0759] ■n is 1 or 2;

[0760] ■p represents an integer ranging from 1 to 5;

[0761] ■q represents an integer ranging from 1 to 4;

[0762] u is 0 or 1;

[0763] ■When n is 1, J represents nitro or nitroso; in particular nitro;

[0764] ■When n is 2, J represents an oxygen or sulfur atom, or a divalent group -S(O) m -, wherein m represents an integer of 1 or 2; preferably, J represents a -SO2- group;

[0765] ■M” represents a hydrogen atom or a cationic counterion;

[0766] ■ may be present or absent, indicating that it is optionally replaced by one or more groups R as defined previously 30 Substituted benzo groups;

[0767] It is to be understood that formula (VI) and (VI') encompass:

[0768] - at least one group (O)2S(O - )-,M' + , where M' + represents a cationic counterion; or

[0769] - at least one group (O)CO - -,M' + , where M' + represents the cationic counterion;

[0770] At least one sodium sulfonate group is preferred.

[0771] As examples of dyes of formula (VI), mention may be made of: Acid Brown 13 and Acid Orange 3; as examples of dyes of formula (VI'), mention may be made of: Acid Yellow 1,2,4-dinitro-1-naphthol-7-sulfonic acid, 2-piperidinyl-5-nitrobenzenesulfonic acid, 2-(4'-N,N-(2"-hydroxyethyl)amino-2'-nitro)anilineethanesulfonic acid, sodium salt of 4-β-hydroxyethylamino-3-nitrobenzenesulfonic acid; Ext. D&C Yellow 7;

[0772] e) Triarylmethane dyes of formula (VII) :

[0773]

[0774] In formula (VII):

[0775] ■R 33 , R 34 , R 35 and R 36, which may be identical or different, represent a hydrogen atom or a group selected from: (C1-C6)alkyl, optionally substituted aryl and optionally substituted aryl(C1-C6)alkyl; in particular (C1-C6)alkyl and optionally substituted by a group (O) m S(O - )-,M + Substituted benzyl, wherein M + and m as defined previously;

[0776] ■R 37 , R 38 , R 39 , R 40 , R 41 , R 42 , R 43 and R 44 , which may be the same or different, represent a hydrogen atom or a group selected from:

[0777] -(C1-C6)alkyl;

[0778] - (C1-C6) alkoxy, (C1-C6) alkylthio;

[0779] -(di)(C1-C6)(alkyl)amino;

[0780] -Hydroxy, thiol;

[0781] -Nitro, nitroso;

[0782] -R o -C(X)-X'-、R o -X'-C(X)-、R o -X'-C(X)-X"-, where R o represents a hydrogen atom or an alkyl or aryl group; X, X' and X", which may be the same or different, represent an oxygen or sulfur atom, or NR, wherein R represents a hydrogen atom or a (C1-C6)alkyl group;

[0783] -(O)2S(O - )-,M + , where M + represents a hydrogen atom or a cationic counterion;

[0784] -(O)CO - -,M + , where M + As previously defined;

[0785] - or two other adjacent groups R 41 With R 42 or R 42 With R 43 or R 43With R 44 together to form a fused benzo group, which is optionally substituted by one or more groups selected from: i) nitro; ii) nitroso; iii) (O)2S(O - )-,M + iv) hydroxyl; v) mercapto; vi) (di) (C1-C6) (alkyl) amino; vii) R o -C(X)-X'-; viii)R o -X'-C(X)-;ix)R o -X'-C(X)-X"-; where M + , R o , X, X′ and X″ are as previously defined;

[0786] In particular, R 37 To R 40 represents a hydrogen atom, and R 41 To R 44 can be the same or different, representing hydroxyl or (O)2S(O - )-,M + Group, where M + As defined previously; and when R 43 With R 44 When together forming a benzo group, it is preferably (O)2S(O - )-group substitution;

[0787] It is understood that at least one of rings G, H or I comprises:

[0788] - at least one group (O)2S(O - )-,M' + , where M' + represents a cationic counterion; or

[0789] - at least one group (O)CO - -,M' + , where M' + represents the cationic counterion;

[0790] At least one sodium sulfonate group is preferred.

[0791] As examples of dyes of formula (VII), mention may be made of: Acid Blue 1; Acid Blue 3; Acid Blue 7, Acid Blue 9; Acid Violet 49; Acid Green 3; Acid Green 5 and Acid Green 50.

[0792] f) Xanthene-based dyes of formula (VIII) :

[0793]

[0794] In formula (VIII):

[0795] ■R 45 , R 46 , R 47 and R 48 , which may be the same or different, represent hydrogen or halogen atoms;

[0796] ■R 49 , R 50 , R 51 and R 52 , which may be the same or different, represent a hydrogen or halogen atom, or a group selected from the following:

[0797] -(C1-C6)alkyl;

[0798] - (C1-C6) alkoxy, (C1-C6) alkylthio;

[0799] -Hydroxy, thiol;

[0800] -Nitro, nitroso;

[0801] -(O)2S(O - )-,M + , where M + represents a hydrogen atom or a cationic counterion;

[0802] -(O)CO - -,M + , where M + As previously defined;

[0803] In particular, R 53 , R 54 , R 55 and R 48 represents a hydrogen or halogen atom;

[0804] ■G represents an oxygen or sulfur atom or a group NR e , where R e As defined previously; in particular, G represents an oxygen atom;

[0805] ■L represents alkoxide O - ,M + ; Thiol salt S - ,M + or group NR f , where R f represents a hydrogen atom or a (C1-C6) alkyl group, and M + As previously defined; M + especially sodium or potassium;

[0806] ■L' represents oxygen or sulfur atom or ammonium group: N + R f Rg , where R f and R g , which may be identical or different, represent a hydrogen atom, a (C1-C6)alkyl group or an optionally substituted aryl group; L' represents in particular an oxygen atom or an optionally substituted aryl group with one or more alkyl groups or (O) m S(O - )-,M + A phenylamino group substituted with a group, wherein m and M + As previously defined;

[0807] ■ Q and Q', which may be the same or different, represent oxygen or sulfur atoms; in particular, Q and Q' represent oxygen atoms;

[0808] ■M + is as defined previously.

[0809] As examples of dyes of formula (VIII), mention may be made of: Acid Yellow 73; Acid Red 51; Acid Red 52; Acid Red 87; Acid Red 92; Acid Red 95; Acid Violet 9;

[0810] g) Indole-based dyes of formula (IX) :

[0811]

[0812] In formula (IX):

[0813] ■R 53 , R 54 , R 55 , R 56 , R 57 , R 58 , R 59 and R 60 , which may be the same or different, represent a hydrogen atom or a group selected from:

[0814] -(C1-C6)alkyl;

[0815] - (C1-C6) alkoxy, (C1-C6) alkylthio;

[0816] -Hydroxy, thiol;

[0817] -Nitro, nitroso;

[0818] -R o -C(X)-X'-、R o -X'-C(X)-、R o -X'-C(X)-X"-, where R orepresents a hydrogen atom or an alkyl or aryl group; X, X' and X", which may be the same or different, represent an oxygen or sulfur atom, or NR, wherein R represents a hydrogen atom or a (C1-C6)alkyl group;

[0819] -(O)2S(O - )-,M + , where M + represents a hydrogen atom or a cationic counterion;

[0820] -(O)CO - -,M + , where M + As previously defined;

[0821] ■G represents an oxygen or sulfur atom or a group NR e , where R e As defined previously; in particular, G represents an oxygen atom;

[0822] ■R i and R h , which may be the same or different, represent a hydrogen atom or a (C1-C6)alkyl group;

[0823] It will be appreciated that formula (IX) comprises:

[0824] - at least one group (O)2S(O - )-,M' + , where M' + represents a cationic counterion; or

[0825] - at least one group (O)CO - -,M' + , where M' + represents the cationic counterion;

[0826] At least one sodium sulfonate group is preferred.

[0827] As example of dye of formula (IX) mention may be made of: Acid Blue 74.

[0828] h) Quinoline-based dyes of formula (X) :

[0829]

[0830] In formula (X):

[0831] ■R 61 represents a hydrogen or halogen atom or a (C1-C6) alkyl group;

[0832] ■R 62 , R 63 and R 64, which may be identical or different, represent a hydrogen atom or a group (O)2S(O - )-,M + , where M + represents a hydrogen atom or a cationic counterion; or R 61 With R 62 , or R 61 With R 64 together to form a benzo group, which may optionally be substituted by one or more groups (O)2S(O - )-,M + Replacement, where M + represents a hydrogen atom or a cationic counterion;

[0833] It is understood that formula (X) contains at least one group (O)2S(O - )-,M' + (where M' + represents a cationic counterion), preferably at least one sodium sulfonate group.

[0834] As examples of dyes of formula (X), mention may be made of: Acid Yellow 2, Acid Yellow 3 and Acid Yellow 5.

[0835] More particularly, the dyes of formula (III) to (VIII) useful in the present invention are selected from: Acid Red 87 (VIII) (CI45380); Sodium salt of 2,4-dinitro-1-naphthol-7-sulfonic acid (VI') (CI10316); Acid Orange 3 (VI) (CI10383); Acid Yellow 9 / Food Yellow 2 (III) (CI13015); Direct Red 45 / Food Red 13 (III) (CI14780); Acid Black 52 (III) (CI13711); Acid Yellow 36 (III) (CI13065); 1-Hydroxy-2-(2',4'-dimethylphenyl)-5-sulfonic acid Sodium salt of (azo) naphthalene-4-sulfonic acid / Food Red 1 (III) (CI14700); Acid Red 14 / Food Red 3 / Mordant Blue 79 (III) (CI14720); Sodium salt of 4-hydroxy-3-[(2-methoxy-5-nitrophenyl)diaza]-6-(phenylamino)naphthalene-2-sulfonic acid / Acid Brown 4 (III) (CI14805); Acid Orange 7 / Pigment Orange 17 / Solvent Orange 49 (III) (CI15510); Food Yellow 3 / Pigment Yellow 104 (III) (CI15985); Acid Red 27 / Food Red 9 (III) (CI16185); Acid Orange 10 / Food Orange 4 (III) (CI16185). II)(CI16230); Acid Red 44(III)(CI16250); Acid Red 33 / Food Red 12(III)(CI17200); Acid Red 184(III)(CI15685); Acid Violet 3(III)(CI19125); 1-Hydroxy-2-(4'-acetamidophenylazo)-8-acetamidonaphthalene-3,6-disulfonic acid sodium salt / Acid Violet 7 / Food Red 11(III)(CI18055); Acid Red 135(III)(CI18130); Acid Yellow 27(IV)(CI19130); Acid Yellow 23 / Food Yellow 4(IV)(CI 19140); 4'-(sulfonato-2",4'-dimethyl)bis(2,6-phenylazo)-1,3-dihydroxybenzene / Acid Orange 24(III)(CI20170); 1-amino-2-(4'-nitrophenylazo)-7-phenylazo-8-hydroxynaphthalene-3,6-disulfonic acid sodium salt / Acid Black 1(III)(CI20470); (4-((4-methylphenyl)sulfonyloxy)phenylazo)-2,2'-dimethyl-4-((2-hydroxy-5,8-disulfonato)naphthylazo)biphenyl / Acid Red 111(III')(CI23266); Food Black 2(III)(CI27755); 1-(4'-sulfonatophenylazo)-4-((2"-hydroxy-3"-acetylamino-6",8"-disulfonato)naphthylazo)-6-sulfonatonaphthalene (tetrasodium salt) / Food Black 1(III) (CI25440); Acid Blue 9(VII) (CI42090); Acid Violet 43(V) (CI60730); Acid Green 25(V) (CI61570); 1-amino-4-cyclohexylamino-9,10-anthraquinone-2-sulfonic acid, sodium salt / Acid Blue 62(V) (CI62045); Acid Blue 78(V) (CI62105); 4-hydroxy-3-((2-methoxyphenyl)azo)-1-naphthalenesulfonic acid, sodium salt / Acid Red 4(III) (CI14710); 2- Piperidino 5-nitrobenzenesulfonic acid (VI'); 2-(4'-N,N-(2"-hydroxyethyl)amino-2'-nitro)anilineethanesulfonic acid (VI'); 4-β-hydroxyethylamino-3-nitrobenzenesulfonic acid (VI'); Acid Violet 49 (VII) (CI42640); Acid Blue 7 (VII) (CI42080); Sodium salt of 1,2-dihydroxy-3-sulfonanthraquinone / Mordant Red 3 (V) (CI58005); Sodium salt of 1-amino-9,10-dihydro-9,10-dioxo-4-(phenylamino)-2-anthracenesulfonic acid / Acid Blue 25 (V) (CI62055); Sodium salt of 4-hydroxy-3-((2-methoxyphenyl)azo)-1-naphthalenesulfonic acid / Acid Red 4 (III) (CI14710).

[0836] Most of these dyes are described in particular in the Colour Index published by The Society of Dyers and Colourists, PO Box 244, Perkin House, 82 Grattan Road, Bradford, Yorkshire, BD1 2JB, England.

[0837] The most particularly preferred anionic dyes are those named in the Colour Index with the following codes: CI 58005 (monosodium salt of 1,2-dihydroxy-9,10-anthraquinone-3-sulfonic acid), CI 60730 (monosodium salt of 2-[(9,10-dihydro-4-hydroxy-9,10-dioxo-1-anthracenyl)amino]-5-methylbenzenesulfonic acid), CI 15510 (monosodium salt of 4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonic acid), CI 15985 (disodium salt of 6-hydroxy-5-[(4-sulfophenyl)azo]-2-naphthalenesulfonic acid), CI 17200 (5-amino-4-hydroxy-3-(phenylazo)- CI20470 (disodium salt of 1-amino-2-(4'-nitrophenylazo)-7-phenylazo-8-hydroxy-3,6-naphthalene disulfonic acid), CI42090 (disodium salt of N-ethyl-N-[4-[[4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadiene-1-ylidene]-3-sulfonobenzenemethanium hydroxide, inner salt), CI61570 (disodium salt of 2,2'-[(9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino]bis[5-methyl]benzenesulfonic acid).

[0838] Compounds corresponding to the meso or tautomeric forms of structures (III) to (X) may also be used.

[0839] Natural dyes

[0840] The direct dyes may be selected from natural direct dyes.

[0841] Among the natural direct dyes that can be used according to the invention, mention may be made of hennaquinone, juglone, alizarin, purpurin, carminic acid, carminic acid, erythrogallol, protocatechaldehyde, indigo, isatin, curcumin, arachidin, apigenin, orcein, brazilwood, brazilwood oxide, heme and hematoxylin. Extracts or decoctions containing these natural dyes and in particular poultices or extracts based on henna may also be used.

[0842] According to a preferred embodiment, the direct dye is selected from the triarylmethane direct dyes of the following formulas (IIa1) and (IIa2) and mixtures thereof:

[0843]

[0844] in:

[0845] R1, R2, R3 and R4, which may be identical or different, represent a hydrogen atom or a radical from the group consisting of: (C1-C6)alkyl, optionally substituted, preferably by hydroxy; an aryl radical, such as phenyl, an aryl(C1-C4)alkyl radical, such as benzyl, a heteroaryl or a heteroaryl(C1-C4)alkyl radical, or else two radicals R1 and R2 and / or R3 and R4, carried by the same nitrogen atom, together with the nitrogen atom carrying them, form an optionally substituted heterocycloalkyl radical, such as morpholino, piperazino or piperidino; preferably, R1, R2, R3 and R4, which may be identical or different, represent a hydrogen atom or a (C1-C4)alkyl radical;

[0846] ■R5, R6, R7, R8, R9, R 10 , R 11 , R 12 , R 13 , R 14 , R 15 and R 16 , which may be identical or different and represent a hydrogen or halogen atom, or a group selected from the group consisting of: i) hydroxyl, ii) thiol, iii) amino, iv) (di) (C1-C4) (alkyl) amino, v) (di) arylamino such as (di) phenylamino, vi) nitro, vii) acylamino (-NR-C(O)R'), in which the group R is a hydrogen atom, a C1-C4 alkyl group optionally carrying at least one hydroxyl group and the group R' is a C1-C2 alkyl group; viii) carbamoyl ((R)2N-C(O)-), in which the groups R, which may be identical or different, represent a hydrogen atom or a C1-C4 alkyl group optionally carrying at least one hydroxyl group; ix) carboxylic acid or ester (-OC(O)R') or (-C(O)OR'), in which the radical R' is a hydrogen atom or a C1-C4-alkyl radical optionally carrying at least one hydroxyl group and the radical R' is a C1-C2-alkyl radical; x) an alkyl radical optionally substituted, in particular by a hydroxyl group; xi) an alkylsulfonylamino radical (R'SO2-NR-), in which the radical R represents a hydrogen atom or a C1-C4-alkyl radical optionally carrying at least one hydroxyl group and the radical R' represents a C1-C4-alkyl radical or a phenyl radical; xii) an aminosulfonyl radical ((R)2N-SO2-), in which the radicals R, which may be identical or different, represent a hydrogen atom or a C1-C4-alkyl radical optionally carrying at least one hydroxyl group; xiii) (C1-C4) alkoxyl radical; and xiv) (C1-C4) alkylthio radical;

[0847] ■ or two groups R5 and R6 and / or R7 and R8 and / or R9 and R10 carried by two adjacent carbon atoms 10 and / or R 11 and R 12 and / or R 13 and R 14 and / or R 15and R 16 Together with the carbon atoms carrying them, they form an aryl or heteroaryl, preferably a benzo 6-membered fused ring, which may also be an optionally substituted, preferably unsubstituted benzo ring;

[0848] ■Q - represents an anionic counterion for achieving electrical neutrality, preferably selected from halides such as chloride or bromide and phosphate;

[0849] According to the preferred embodiment, the direct dye is preferably HC Blue 15.

[0850] According to a variant of the invention, the direct dye is chosen from cationic direct dyes, preferably endocyclic cationic direct dyes, more particularly dyes of formula (IV-1) as defined previously, such as Basic Red 51.

[0851] The direct dye is preferably chosen from cationic direct dyes, more preferably from triarylmethane direct dyes of formula (IIa1) and (IIa2) as defined previously, direct dyes of formula (II-1) and (IV-1) as defined previously and mixtures thereof, even more preferably from HC Blue 15, Basic Red 51, Basic Yellow 87 and mixtures thereof.

[0852] The direct dyes may be present in the composition in a total content ranging from 0.001% to 5% by weight, preferably from 0.01% to 3% by weight, more preferably from 0.1% to 1% by weight, even more preferably from 0.1% to 0.8% by weight relative to the total weight of the composition.

[0853] According to a preferred embodiment, the composition comprises a total content of colorants of less than 0.1% by weight, preferably less than 0.01% by weight, more preferably less than 0.001% by weight, relative to the total weight of the composition.

[0854] According to a more preferred embodiment, the composition is free of colorants.

[0855] Additional alkalizing agents

[0856] The composition may also comprise one or more additional alkalizing agents in addition to the carbonates, bicarbonates and silicates as previously defined.

[0857] The additional alkalizing agents may be inorganic or organic. They may be selected from i) aqueous ammonia, ii) alkanolamines such as monoethanolamine, diethanolamine, triethanolamine and their derivatives, iii) oxyethylidene and / or oxypropylidene ethylenediamine, iv) inorganic or organic hydroxides, v) amino acids, preferably basic amino acids such as arginine, lysine, ornithine, citrulline and histidine, and vi) compounds of the following formula (II):

[0858]

[0859] in:

[0860] - W is a divalent (C1-C8)alkylene group, preferably a propylene group, which is optionally substituted, in particular, by hydroxy or C1-C4 alkyl;

[0861] -R a , R b , R c and R d , which may be the same or different, represent a hydrogen atom or a C1-C4 alkyl group or a C1-C4 (poly)hydroxyalkyl group;

[0862] vii) and mixtures thereof.

[0863] The inorganic or organic hydroxide is preferably selected from i) alkali metal hydroxides, such as sodium hydroxide or potassium hydroxide, ii) alkaline earth metal hydroxides, iii) transition metal hydroxides, such as hydroxides of metals from groups III, IV, V and VI, iv) hydroxides of lanthanides or actinides.

[0864] When they are present, the additional alkalizing agents preferably represent from 0.001% to 20% by weight and more particularly from 0.005% to 16% by weight relative to the total weight of the composition.

[0865] According to a preferred embodiment, the composition according to the invention does not comprise any further alkalizing agent selected from ammonia and / or alkanolamines.

[0866] Inorganic acidifier

[0867] The composition may also comprise one or more inorganic acidifying agents, such as hydrochloric acid, (ortho)phosphoric acid, boric acid, nitric acid and sulfuric acid.

[0868] pH of the composition

[0869] The composition according to the invention preferably has a pH of less than or equal to 11, preferably less than or equal to 10.5, preferably less than or equal to 10.

[0870] The pH range of the composition according to the present invention may be 8 to 11, preferably 8 to 10.5, more preferably 8 to 10.

[0871] According to a particularly preferred embodiment, the pH range of the composition according to the invention is from 8.3 to 10.

[0872] Chelating agents

[0873] The composition according to the invention may optionally contain one or more chelating agents. As examples of chelating agents that can be used in the present invention, mention may be made of N,N-dicarboxymethyl-L-glutamic acid and tetrasodium N,N-bis(carboxymethyl)-L-glutamate.

[0874] Other characteristics of the composition

[0875] The composition preferably comprises water in a content ranging from 5% to 99% by weight, more preferably ranging from 5% to 80% by weight, relative to the total weight of the composition.

[0876] The composition may also comprise at least one organic solvent.

[0877] The term "organic solvent" means an organic substance that is capable of dissolving another substance without chemically modifying it.

[0878] Examples of organic solvents that may be mentioned include lower C2-C4-alkanols, such as ethanol and isopropanol, polyols and polyol ethers, for example 2-butoxyethanol, propylene glycol, propylene glycol monomethyl ether and diethylene glycol monoethyl ether and diethylene glycol monomethyl ether, and also aromatic alcohols, for example benzyl alcohol or phenoxyethanol, and mixtures thereof.

[0879] The organic solvent is present in a proportion preferably ranging from 0.1% to 40% by weight, more preferably from 1% to 30% by weight, even more preferably from 1% to 25% by weight, relative to the total weight of the composition.

[0880] The composition according to the invention may be in liquid form, in the form of a slurry, in a thickened form (especially a gel, cream, wax or paste), or in the form of a foam.

[0881] The compositions according to the invention may also comprise one or more additional compounds chosen from nonionic, anionic, cationic or amphoteric surfactants, cationic, anionic, nonionic or zwitterionic, associative or non-associative thickening polymers of natural or synthetic origin, silicone or non-silicone vegetable, mineral or synthetic oils in the form of oils, gums or resins, UV-screening agents, pigments, fillers such as mother-of-pearl and metal oxides such as titanium dioxide, clays, fragrances, peptizers, vitamins and preservatives.

[0882] Method for lightening keratin fibers

[0883] According to a second aspect, a subject of the invention is a method for lightening keratin fibres, which method comprises applying to the keratin fibres a composition comprising ingredients i) to iv) and iv′) as previously defined.

[0884] Method for simultaneously bleaching and dyeing keratin fibers

[0885] According to a third aspect, the subject of the invention is a process for the simultaneous bleaching and dyeing of keratin fibers, which comprises applying to the keratin fibers a composition comprising ingredients i) to iv) and iv') as previously defined and v) one or more colorants preferably chosen from direct dyes, oxidative dyes and mixtures thereof.

[0886] Additional features of the method for simultaneously lightening or bleaching and dyeing keratin fibers

[0887] In particular, the composition is applied to the keratin fibres, wet or dry.

[0888] Preferably, the keratin fibers are dark keratin fibers.

[0889] The term "dark keratin fibers" is intended to mean keratin fibers having a shade depth less than or equal to 6 (dark blond) and preferably less than or equal to 4 (chestnut brown).

[0890] The composition may advantageously be applied to the keratin fibres in an amount ranging from 0.1 g to 20 g of composition per gram of keratin fibres.

[0891] The composition is allowed to stand on the fibers for a period of time generally from 1 minute to 1 hour, preferably from 5 minutes to 60 minutes.

[0892] For example, the composition may be allowed to sit on the fibers for a period of 50 minutes.

[0893] The composition may be left to rest on the fibers under a closing system. Non-limiting examples of closing systems that may be mentioned are those of the encapsulated type made of aluminum or plastic films or hair caps with or without holes.

[0894] During the brightening process, the temperature is conventionally ambient temperature (15°C to 25°C) to 80°C, and preferably ambient temperature to 60°C.

[0895] For example, during the brightening process, the temperature is 33°C.

[0896] After treatment, the keratin fibers are optionally rinsed with water, optionally washed with a shampoo and then rinsed with water, before being dried naturally or air-dried.

[0897] Drying can be done using absorbent paper, a hair dryer or a styling hood or any other drying means.

[0898] The composition used in the method according to the invention is preferably prepared by mixing at least two compositions. Preferably, the mixing of the at least two compositions is carried out extemporaneously before applying the compositions to the keratin fibres.

[0899] According to a preferred embodiment, the composition used in the method according to the invention results from mixing:

[0900] ■ A composition (A) comprising:

[0901] - one or more chemical oxidizing agents as defined previously, chosen from hydrogen peroxide, hydrogen peroxide generating systems other than peroxygenated salts, and mixtures thereof, preferably hydrogen peroxide; and

[0902] - optionally one or more compounds iv) as defined previously and / or one or more compounds iv') as defined previously; and

[0903] ■ A composition (B) comprising:

[0904] - one or more compounds selected from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof as previously defined, preferably selected from carbonates and bicarbonates as previously defined and mixtures thereof; and

[0905] - one or more silicates as previously defined; and

[0906] - optionally one or more colorants, preferably chosen from direct dyes and oxidation dyes and mixtures thereof; and

[0907] - optionally one or more compounds iv) as defined previously and / or one or more compounds iv') as defined previously; and

[0908] ■Optionally a composition (C) comprising:

[0909] - one or more colorants, preferably chosen from direct dyes and oxidation dyes and / or mixtures thereof; and

[0910] - optionally one or more compounds iv) as defined previously and / or one or more compounds iv') as defined previously;

[0911] It should be understood that:

[0912] - at least one of compositions (A) or (B) or at least one of compositions (A) or (B) or (C) if composition (C) is present comprises one or more compounds iv) as previously defined; and

[0913] - at least one of the compositions (A) or (B) or at least one of the compositions (A) or (B) or (C) if composition (C) is present comprises one or more compounds iv') as defined previously.

[0914] When alcohols a) are present, they are preferably present in composition (B) or in at least one of compositions (B) or (C) if composition (C) is present.

[0915] When amphoteric or zwitterionic compounds b) are present, they are preferably present in composition (A) or in at least one of compositions (A) or (C) if composition (C) is present.

[0916] When compounds c) are present, they are preferably present in composition (B) or in at least one of compositions (B) or (C) if composition (C) is present.

[0917] When organic amines d) are present, they are preferably present in composition (B) or in at least one of compositions (B) or (C) if composition (C) is present.

[0918] When organic acids e) are present, they are preferably present in composition (A) or in at least one of compositions (A) or (C), preferably in composition (C) if composition (C) is present.

[0919] Preferably, when the composition according to the invention results from mixing compositions (A), (B) and (C) as previously defined, composition (B) does not comprise any colorant chosen from direct dyes, oxidation dyes and mixtures thereof.

[0920] Preferably, at least one of the compositions (A) or (B) or at least one of the three compositions (A) or (B) or (C) is aqueous. More preferably, composition (A) is aqueous.

[0921] According to a particular embodiment, composition (B) is anhydrous.

[0922] According to a particular embodiment, composition (A) is aqueous, composition (B) is anhydrous, and composition (C) (when present) is aqueous.

[0923] The term "aqueous composition" means a composition comprising at least 2% by weight of water, preferably at least 5% by weight of water, more preferably at least 10% by weight of water and even more advantageously more than 20% by weight of water.

[0924] The term "anhydrous composition" refers to a composition containing less than 2% water by weight, preferably less than 0.5% water by weight, and more preferably no water. Where appropriate, such small amounts of water may be introduced, inter alia, via the ingredients of the composition which may contain residual amounts thereof.

[0925] The composition used in the method according to the invention makes it possible to obtain a lightening of keratin fibers, characterized in that the b* value is lower, preferably 10% lower and more preferably 15% lower than the b* value measured at the same intensity level L* on keratin fibers lightened with a composition comprising one or more persulfates, the b* and L* values ​​being measured in the CIE L*a*b* system.

[0926] Preferably, the values ​​of b* and L* are measured according to the color evaluation method described in the Examples.

[0927] use

[0928] According to a fourth aspect, a subject of the present invention is the use of a composition comprising ingredients i) to iv) and iv′) as previously defined for lightening keratin fibres, preferably for lightening keratin fibres while simultaneously deyellowing them.

[0929] According to a fifth aspect, a subject of the invention is the use of a composition comprising ingredients i) to iv) and iv') as previously defined and v) one or more colorants preferably chosen from direct dyes, oxidation dyes and mixtures thereof for the simultaneous bleaching and dyeing of keratin fibres.

[0930] Multi-compartment device (test kit)

[0931] According to a sixth aspect, the subject of the invention is a device comprising a plurality of separate compartments (kit), comprising:

[0932] ■ A first compartment containing a composition (A) comprising:

[0933] - one or more chemical oxidants selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts and mixtures thereof, preferably hydrogen peroxide; and

[0934] - optionally one or more compounds iv) and / or one or more compounds iv') as defined previously; and

[0935] ■ A second compartment containing a composition (B) comprising:

[0936] - one or more compounds selected from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof, preferably selected from carbonates and bicarbonates and mixtures thereof; and

[0937] - one or more silicates; and

[0938] - optionally one or more colorants, preferably chosen from direct dyes and oxidation dyes and mixtures thereof; and

[0939] - optionally one or more compounds iv) and / or one or more compounds iv') as defined previously; and

[0940] ■ A third compartment optionally containing a composition (C) comprising:

[0941] - one or more colorants, preferably chosen from direct dyes and oxidation dyes and mixtures thereof; and

[0942] - optionally one or more compounds iv) and / or one or more compounds iv') as defined previously;

[0943] It should be understood that:

[0944] - at least one of compositions (A) or (B) or at least one of compositions (A) or (B) or (C) if composition (C) is present comprises one or more compounds iv) as previously defined; and

[0945] - at least one of the compositions (A) or (B) or at least one of the compositions (A) or (B) or (C) if composition (C) is present comprises one or more compounds iv') as defined previously.

[0946] Examples

[0947] The following examples will allow the invention to be more clearly understood, however, are not limiting in nature.In the following examples, unless otherwise indicated, all amounts are shown as mass percentages relative to the total weight of the composition.

[0948] Methods used to evaluate color

[0949] In the examples, the color of the locks was evaluated in the CIE L*a*b* system using a colorimeter, which was a Minolta CM3610A spectrophotometer (illuminant D65).

[0950] In this L*a*b* system, L* represents the intensity of the color, a* indicates the chromaticity of the color on the green / red axis, and b* indicates the chromaticity of the color on the blue / yellow axis. The higher the value of L*, the lighter the color. The higher the value of a*, the redder the color, and the higher the value of b*, the yellower the color.

[0951] Example 1 (Comparison)

[0952] The following compositions C1 to C12 were prepared and then applied according to the application regimen described below:

[0953] [Table 1]

[0954]

[0955] [Table 2]

[0956]

[0957] Administration regimen

[0958] 10 g of each of compositions C1 to C12 are applied to twelve 1-g Caucasian HT4 dark hair tresses on a hot plate maintained at a temperature of 33° C. The whole is covered with a cellophane film for 50 minutes.

[0959] The tresses are then rinsed, washed with a standard shampoo, rinsed again and then dried.

[0960] Colorimetric measurement

[0961] The colorimetric measurement results are summarized in the following table:

[0962] [Table 3]

[0963]

[0964]

[0965] The results show that the comparative composition comprising persulfate enables a good level of lightening to be obtained, characterized by a relatively high L* value, but the color shade obtained has a pronounced yellow component, characterized by a high b* value.

[0966] Example 2

[0967] The following compositions C13 to C17 were prepared and then applied according to the application schedule described below:

[0968] [Table 4]

[0969]

[0970]

[0971] Administration regimen

[0972] 10 g of each of the compositions C13 to C17 were applied to five 1-g Caucasian HT4 dark hair tresses on a hot plate maintained at a temperature of 33° C. The whole was covered with a cellophane film for 50 minutes.

[0973] The tresses are then rinsed, washed with a standard shampoo, rinsed again and then dried.

[0974] Colorimetric measurement

[0975] The colorimetric measurement results are summarized in the following table:

[0976] [Table 5]

[0977] Composition L* b* C13 51.58 22.56 C14 47.69 23.19 C15 44.99 22.55 C16 48.5 23.18 C17 50.96 23.02

[0978] The results show that the composition according to the invention makes it possible to obtain a good lightening level characterized by relatively high L* values. Furthermore, the color shades obtained are characterized by lower b* values ​​for the composition according to the invention compared to the comparative persulfate-based composition of Example 1 at equal L* intensity levels, as shown in FIG. Figure 1 shown.

Claims

1. A composition comprising: i) one or more chemical oxidants selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts, and mixtures thereof; ii) one or more compounds selected from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof, preferably selected from carbonates, bicarbonates and mixtures thereof; iii) one or more silicates; iv) one or more compounds chosen from compounds consisting of saturated or unsaturated, linear or branched hydrocarbon-based chains containing 1 to 30 carbon atoms, which are optionally substituted by one or more cyclic groups and / or optionally interrupted by one or more non-adjacent oxygen atoms; saturated or unsaturated, optionally aromatic, monocyclic or polycyclic, fused or non-fused carbocyclic compounds containing 3 to 22 carbon atoms, which are optionally substituted by one or more identical or different groups selected from: (C1-C 6) alkyl or (C1-C6)alkenyl or (C1-C6)alkoxy and / or optionally interrupted by one or more carbonyl (CO) groups; monocyclic or polycyclic, fused or non-fused, saturated or unsaturated, especially aromatic heterocyclic compounds, which contain 5 to 22 members and contain 1 to 3 oxygen atoms, optionally substituted by one or more identical or different radicals selected from the group consisting of (C1-C6)alkyl or (C1-C6)alkoxy and / or optionally interrupted by one or more carbonyl (CO) groups and mixtures thereof; iv') one or more compounds different from compound iv) selected from: a) alcohol; b) amphoteric or zwitterionic compounds selected from the group consisting of phospholipids such as lecithin, amino acids, amphoteric or zwitterionic surfactants and mixtures thereof; c) esters, amides, imines and mixtures thereof; d) organic amines; e) organic acids; f) and mixtures thereof; wherein the composition comprises a total persulfate content of less than 1% by weight.

2. A composition according to the preceding claim, wherein The chemical oxidizing agent is hydrogen peroxide.

3. A composition according to any one of the preceding claims, wherein The chemical oxidizing agent is present in the composition in a total content ranging from 1% to 12% by weight, preferably ranging from 3% to 9% by weight, more preferably ranging from 3.5% to 8.5% by weight relative to the total weight of the composition.

4. A composition according to any one of the preceding claims, wherein The compound ii) is present in the composition in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 15% by weight, more preferably ranging from 2% to 15% by weight, even more preferably ranging from 4% to 15% by weight relative to the total weight of the composition.

5. A composition according to any one of the preceding claims, wherein The compound ii) is selected from carbonates, carbonate generating systems and mixtures thereof, preferably selected from carbonates.

6. A composition according to any one of the preceding claims, wherein The carbonate and / or carbonate generating system is present in the composition in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 20% by weight, more preferably ranging from 1% to 10% by weight relative to the total weight of the composition.

7. A composition according to any one of the preceding claims, wherein The carbonate is selected from: - alkali metal carbonates; - Alkaline earth metal carbonates; - lanthanide carbonates; - Transition metal carbonates; - bismuth carbonate; - cadmium carbonate; - thallium carbonate; - zinc carbonate; -Formula (N + R 1 R 2 R 3 R 4 )2CO3 2- A compound wherein R 1 , R 2 , R 3 and R 4 independently of one another represent a hydrogen atom or a (C1-C4)alkyl group which is optionally substituted by a hydroxyl group; -guanidine carbonate; - mixtures thereof; Preferably, the carbonate is selected from the group consisting of sodium carbonate, potassium carbonate, cesium carbonate, lithium carbonate, magnesium carbonate, calcium carbonate, barium carbonate, strontium carbonate, cerium carbonate, lanthanum carbonate, yttrium carbonate, copper (II) carbonate, manganese carbonate, nickel carbonate, silver carbonate, zirconium carbonate, bismuth carbonate, cadmium carbonate, thallium carbonate, zinc carbonate, ammonium carbonate, guanidine carbonate, tetraethylammonium carbonate and mixtures thereof, more preferably selected from the group consisting of sodium carbonate, potassium carbonate, cesium carbonate, magnesium carbonate, calcium carbonate, cerium carbonate, manganese carbonate, zinc carbonate, ammonium carbonate, guanidine carbonate and mixtures thereof, even more preferably selected from the group consisting of sodium carbonate, potassium carbonate, magnesium carbonate, calcium carbonate, ammonium carbonate and mixtures thereof; more preferably, the carbonate is ammonium carbonate.

8. A composition according to any one of the preceding claims, wherein The compound ii) is selected from bicarbonate, bicarbonate generating system and mixtures thereof, preferably selected from bicarbonate.

9. A composition according to any one of the preceding claims, wherein The bicarbonate salt and / or the bicarbonate generating system is present in the composition in a total content ranging from 0.01% to 20% by weight, preferably ranging from 1% to 15% by weight, more preferably ranging from 2% to 15% by weight, even more preferably ranging from 4% to 15% by weight, relative to the total weight of the composition.

10. A composition according to any one of the preceding claims, wherein The bicarbonate is selected from: - alkali metal bicarbonates; - alkaline earth metal bicarbonates; -Formula N + R 1 R 2 R 3 R 4 HCO3 - A compound wherein R 1 , R 2 , R 3 and R 4 independently of one another represent a hydrogen atom or a (C1-C4)alkyl group which is optionally substituted by a hydroxyl group; -aminoguanidine bicarbonate; - mixtures thereof; Preferably, it is selected from sodium bicarbonate, potassium bicarbonate, lithium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate, choline bicarbonate, triethylammonium bicarbonate, aminoguanidine bicarbonate and mixtures thereof; more preferably, it is selected from sodium bicarbonate, potassium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate and mixtures thereof, more preferably, it is selected from sodium bicarbonate, potassium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate and mixtures thereof, even more preferably, it is selected from sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate and mixtures thereof; most preferably, the bicarbonate is ammonium bicarbonate.

11. A composition according to any one of the preceding claims, wherein The silicate is chosen from alkali metal silicates, alkaline earth metal silicates, aluminum silicates, trimethylammonium silicate and mixtures thereof, preferably from sodium silicate, potassium silicate, calcium silicate, aluminum silicate, trimethylammonium silicate and mixtures thereof, more preferably from sodium silicate, even more preferably from compounds with the INCI names sodium silicate and / or sodium metasilicate.

12. A composition according to any one of the preceding claims, wherein The silicate is present in the composition in a total content ranging from 1% to 40% by weight, preferably from 2% to 35% by weight, more preferably from 3% to 35% by weight, even more preferably in the range of 4% to 20% by weight relative to the total weight of the composition.

13. A composition according to any one of the preceding claims, wherein The weight ratio of the total amount of bicarbonate and / or bicarbonate generating system / the total amount of silicate is 0.00025 to 20, preferably 0.02 to 7.5, more preferably 0.05 to 5.

14. A composition according to any one of the preceding claims, wherein The weight ratio of the total amount of bicarbonate and / or bicarbonate generating system / the total amount of chemical oxidant is from 0.0008 to 20, preferably from 0.11 to 5, more preferably from 0.2 to 4.

2.

15. A composition according to any one of the preceding claims, wherein The weight ratio of the total amount of carbonate and / or carbonate generating system / the total amount of bicarbonate and / or bicarbonate generating system is 0.0005 to 2000, preferably 0.06 to 20, more preferably 0.06 to 5.

16. A composition according to any one of the preceding claims, wherein The compound iv) is selected from the following compounds 1e to 18e, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof: Preferably, it is selected from compounds 1e, 2e, 4e and 18e, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof; more preferably, it is selected from compounds 1e and 2e, their solvates and mixtures thereof.

17. A composition according to any one of the preceding claims, wherein: □ The alcohol a) is selected from the compounds of the following formula (Ia), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof: In formula (Ia): ■R 1 and R 2 Independently means: - a hydrogen atom; or - a linear or branched, saturated or unsaturated hydrocarbon-based group comprising 1 to 30 carbon atoms, which is optionally interrupted by one or more non-adjacent oxygen atoms and / or is optionally substituted by one or more identical or different groups selected from: hydroxy (-OH) or (poly)(hydroxy)alkyl; or -(hetero)cyclyl, which is optionally substituted by one or more identical or different groups selected from: -OR" or hydroxyl (-OH); R 1 and R 2 Together with the carbon atoms carrying them, they may form a (hetero)cyclic group, which may be optionally substituted by one or more identical or different groups selected from the following: -Hydroxy (-OH); -(poly)(hydroxy)alkyl; -group-OR"; -alkyl, which is optionally interrupted by one or more carbonyl (CO) groups and / or is optionally substituted by a (hetero)cyclyl group, which itself is optionally substituted by one or more identical or different groups selected from the group consisting of hydroxy (-OH) or (poly)(hydroxy)alkyl; - optionally substituted by a (hetero)cyclic group, which itself is optionally substituted by one or more identical or different groups selected from the group consisting of hydroxy (-OH) or (poly)(hydroxy)alkyl; ■R 3 express: - a linear or branched, saturated or unsaturated or aromatic hydrocarbon-based radical comprising 1 to 30 carbon atoms, which is optionally interrupted by one or more non-adjacent oxygen atoms or one or more carbonyl groups (CO) and / or is optionally substituted by one or more identical or different radicals selected from the group consisting of hydroxyl (-OH) or (poly)(hydroxy)alkyl or -CHO or a (hetero)cyclyl radical, which itself is optionally substituted by one or more identical or different radicals selected from the group consisting of hydroxyl (-OH) or (poly)(hydroxy)alkyl or -OR" or -CHO; or -(hetero)cyclyl, which is optionally substituted by one or more identical or different groups selected from: -OR" or (poly)(hydroxy)alkyl or -CHO; ■p = 0 or 1; ■R” stands for: - a linear or branched, saturated or unsaturated hydrocarbon-based group containing 1 to 30 carbon atoms, which is optionally substituted by one or more hydroxyl groups (-OH); or - (hetero)cyclyl, which is optionally substituted by one or more identical or different groups selected from: hydroxy (-OH) or (poly)(hydroxy)alkyl; Preferably selected from the following compounds 1a to 50a, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof: More preferably selected from compounds 1a to 29a, 45a, 49a and 50a, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof; Even more preferably selected from compounds 1a, 2a, 3a, 12a, 15a, 16a, 18a, 21a, 22a, 26a, 29a, 45a and 49a, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof; Most preferably selected from compound 12a, its salt, its optical isomer, its geometric isomer, its tautomer, its solvate and a mixture thereof; and / or □ The amphoteric or zwitterionic compound b) is selected from the following compounds 1b to 28b, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof: Preferably selected from compounds 2b, 10b, 12b, 15b, 17b, 18b, 24b and 27b, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof; Most preferably selected from compound 15b, a salt thereof, a solvate thereof and a mixture thereof; and / or □ The compound c) is selected from the compound of the following formula (Ic), its salt, its optical isomer, its geometric isomer, its tautomer, its solvate and its mixture: In formula (Ic): ■ A represents a linear or branched, saturated or unsaturated hydrocarbon-based radical comprising 1 to 30 carbon atoms, which is optionally interrupted by one or more non-adjacent oxygen atoms and / or one or more identical or different radicals selected from: -CO-, -OCO-, -COO-, and / or is optionally substituted by one or more identical or different radicals selected from: hydroxyl (-OH), a radical -COOAk1, a (hetero)cyclic radical optionally substituted by one or more hydroxyl (-OH); ■X1 independently represents an oxygen atom or a group -NR-, preferably an oxygen atom; ■X2 represents an oxygen atom or a group -NR-, preferably an oxygen atom; ■p = 0 or 1; ■ B represents a saturated or unsaturated, linear or branched or cyclic hydrocarbon-based group containing 1 to 30 carbon atoms, which is optionally substituted by one or more identical or different groups selected from: - (hetero)cyclyl, which is optionally substituted by one or more identical or different groups selected from the group consisting of hydroxy (-OH), -OR", -COOA', -OCOA', (poly)(hydroxy)alkyl; -group -OR'; -group -COOA'; - group-OCOA'; and / or optionally interrupted by one or more non-adjacent oxygen atoms and / or one or more identical or different groups selected from: -OCO-, -COO-; ■ A' represents a linear or branched, saturated or unsaturated hydrocarbon-based group containing 1 to 30 carbon atoms, which is optionally interrupted by one or more non-adjacent oxygen atoms and / or one or more identical or different groups selected from the following: -CO-, -OCO-, -COO-, and / or is optionally substituted by one or more identical or different groups selected from the following: hydroxyl (-OH), -COOAk1; ■ R represents a hydrogen atom or an alkyl group, in particular a (C1-C4)alkyl group; ■ R' represents a hydrogen atom or an alkyl group which is optionally substituted by one or more identical or different groups selected from the group consisting of: hydroxyl (-OH) or -OCOA'; ■R” stands for: - an alkyl group optionally substituted with one or more hydroxyl groups (-OH); or - (hetero)cyclyl, which may be optionally substituted by one or more identical or different groups selected from: hydroxy (-OH), (poly)(hydroxy)alkyl; ■Ak1 represents an alkyl group optionally substituted with -COOAk2; ■Ak2 represents an alkyl group; R and B may form a heterocyclic ring together with the nitrogen atom carrying them; A and B may together form a heterocyclic ring which is optionally substituted, in particular, by one or more identical or different groups selected from: - (hetero)cyclyl, which is optionally substituted, in particular, by one or more identical or different radicals selected from: hydroxy (-OH), (poly)(hydroxy)alkyl; -Hydroxy (-OH); -group-OR"; -(poly)(hydroxy)alkyl; It will be appreciated that if X1 represents a group -NR-, then A and B may represent hydrogen atoms; Preferably, it is selected from the following compounds 1c to 94c, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof: More preferably selected from compounds 1c to 63c and 94c, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof, and mixtures thereof; Even more preferably selected from compounds 1c, 4c, 5c, 6c, 8c, 12c, 15c, 16c, 22c, 24c, 26c, 27c, 31c, 33c, 37c, 41c, 53c, 54c, 55c, 58c, 60c, 62c, 63c and 94c, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof; Most preferably selected from compound 58c, its salt, its optical isomer, its geometric isomer, its tautomer, its solvate and mixture thereof; and / or □ The organic amine d) is selected from the following compounds 1d to 37d, chitosan, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof: Preferably selected from compounds 1d to 37d, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof; More preferably selected from compounds 1d to 35d, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof, and mixtures thereof; Even more preferably selected from compounds 1d, 2d, 3d, 22d and 30d, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof; Most preferably selected from compound 2d, its salt, its optical isomer, its geometric isomer, its tautomer, its solvate and mixture thereof; and / or □ The organic acid e) is selected from the compounds of the following formula (I) and / or (II), their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof: In formula (I): ■X represents a carbon atom or S=O or P-OH, preferably a carbon atom; ■A represents the group -OR 4 or group-CR 1 (R 2 )p(R 3 ), it is understood that if X represents P-OH, then A represents a group -OR 4 ; ■p = 0 or 1; ■R 1 represents a hydrogen atom or a hydroxyl group (-OH) or a group -NR a -R c or group -NR a -CO-R c ; ■R 2 represents a hydrogen atom or a hydroxyl group (-OH) or a group -X(O)OH, wherein X is as defined previously, in particular wherein X represents a carbon atom; ■R 3 represents a hydrogen atom or a hydroxyl group (-OH) or a (hetero)cyclic group which is optionally substituted by one or more identical or different groups selected from the following: (C1-C6)alkyl, especially (C1-C4)alkyl such as methyl, alkylcarbonyl-(CO)-R c , alkylcarbonyloxy-O-CO-R c , alkoxycarbonyl -CO-OR c , -OH, (C1-C6)alkoxy, especially (C1-C4)alkoxy such as methoxy, -X(O)OH, wherein X is as defined above, especially wherein X represents a carbon atom, or -OX(O)OH, wherein X is as defined above, or R 3 represents an alkyl or alkenyl group or an alkylamino group or an alkylamide group, wherein the alkyl or alkenyl group or an alkylamino group or an alkylamide group is: - optionally substituted by one or more identical or different groups selected from the group -X(O)OH, wherein X is as defined previously, in particular wherein X represents a carbon atom; a hydroxyl (-OH) group or a (hetero)cyclyl group; and / or - optionally interrupted by one or more heteroatoms or groups selected from: -O-, -NR a -, -S-, -CO- or a combination thereof, such as -O-CO-, -(CO)-O-, -NR a -(CO)- or -(CO)-NR a -; R 1 and R 3 Together with the carbon atoms carrying them, they can form a (hetero)cyclic group, which can be optionally substituted by one or more identical or different groups selected from the following: (C1-C6)alkyl, especially (C1-C4)alkyl such as methyl, alkylcarbonyl-(CO)-R c , alkylcarbonyloxy-O-CO-R c , alkoxycarbonyl-CO-OR c , -OH, (C1-C6)alkoxy, especially (C1-C4)alkoxy such as methoxy, -X(O)OH, wherein X is as defined above, especially wherein X represents a carbon atom or -OX(O)OH, wherein X is as defined above, especially wherein X═P-OH; R 1 and R 3 can form carbonyl -CO- together with the carbon atom that bears them; ■R 4 represents a hydrogen atom or an alkyl or alkenyl or (hetero)cyclyl group, which may be optionally substituted by one or more identical or different groups selected from: a group -X(O)OH, wherein X is as defined previously, in particular wherein X represents a carbon atom or P-OH; a hydroxyl (-OH) or (hetero)cyclyl group; ■R a represents a hydrogen atom or a (C1-C4)alkyl group optionally substituted by one or more groups -X(O)OH, wherein X is as previously defined, in particular wherein X represents a carbon atom; ■R c represents an alkyl or alkenyl group or an alkylamino group or an alkylamide group, wherein the alkyl or alkenyl group or an alkylamino group or an alkylamide group is: - optionally substituted by one or more identical or different groups selected from: a group -X(O)OH, wherein X is as defined previously, in particular wherein X represents a carbon atom; a hydroxyl (-OH) group or a (hetero)cyclyl group; and / or - optionally interrupted by one or more heteroatoms or groups selected from: -O-, -S-, -CO-, -O-CO-, -O-CO-, -NR a -(CO)- or -(CO)-NR a -; P-(CHO) m (COOY) n (II) In formula (II): ■ P represents a polysaccharide chain composed of monosaccharides containing 5 carbon atoms or more than 5 carbon atoms, preferably 6 or more than 6 carbon atoms and more particularly 6 carbon atoms; ■ Y is selected from a hydrogen atom, ions derived from alkali metals or alkaline earth metals such as sodium or potassium, ammonia, organic amines such as monoethanolamine, diethanolamine, triethanolamine and 3-amino-1,2-propanediol, and basic amino acids such as lysine, arginine, sarcosine, ornithine and citrulline; ■m+n is greater than or equal to 1; ■ m is the degree of substitution of the polysaccharide by one or more aldehyde groups (DS(CHO)), which is in the range of 0.001 to 2 and preferably 0.005 to 1.5; ■ n is the degree of substitution of the polysaccharide by one or more carboxyl groups (DS(COOX)), which is in the range of 0 to 2 and preferably 0.001 to 1.5; Preferably selected from the compounds of formula (I) as defined previously, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof; More preferably, it is selected from the following compounds 1 to 40, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof: Even more preferably selected from compounds 1, 2, 6, 7, 8, 9, 10, 15, 18, 20, 22, 23, 26, 28 and 31, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof; Most preferably selected from compounds 1, 2, 20, 26, 28 and 31, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates and mixtures thereof; And it is also more preferably selected from the group consisting of compound 26, its salt, its optical isomer, its geometric isomer, its tautomer, its solvate and a mixture thereof.

18. A composition according to any one of the preceding claims, wherein: - said compound iv) is present in said composition in a total content ranging from 0.01% to 50% by weight, preferably ranging from 1% to 30% by weight, more preferably ranging from 1% to 15% by weight relative to the total weight of said composition; and / or - said compounds iv') are present in the composition in a total content ranging from 0.01% to 50% by weight, preferably ranging from 0.1% to 30% by weight, more preferably ranging from 0.2% to 15% by weight relative to the total weight of the composition.

19. A composition according to any one of the preceding claims, wherein The composition comprises a total content of magnesium carbonate of less than 5% by weight, preferably less than 1% by weight, more preferably less than 0.1% by weight, even more preferably less than 0.01% by weight, most preferably less than 0.001% by weight, and better still the composition is free of magnesium carbonate.

20. A composition according to any one of the preceding claims, wherein The composition comprises a total persulfate content of less than 0.1% by weight, preferably less than 0.01% by weight, more preferably less than 0.001% by weight, even more preferably the composition is free of persulfate.

21. A composition according to any one of the preceding claims, wherein The pH range of the composition is 8 to 11, preferably 8 to 10.5, more preferably 8 to 10, even more preferably 8.3 to 10.

22. A composition according to any one of the preceding claims, wherein The composition comprises v) one or more colorants preferably selected from direct dyes, oxidation dyes and mixtures thereof.

23. A composition according to any one of claims 1 to 21, wherein The composition comprises a total content of colorants of less than 0.1% by weight, preferably less than 0.01% by weight, more preferably less than 0.001% by weight relative to the total weight of the composition; even more preferably, the composition is free of colorants.

24. A method for lightening keratin fibres, the method comprising applying to the keratin fibres a composition according to any one of claims 1 to 21 or 23.

25. The method according to the preceding claim, wherein: The composition makes it possible to obtain a lightening of keratin fibers, characterized in that the b* value is lower, preferably 10% lower and more preferably 15% lower than the b* value measured at the same intensity level L* on keratin fibers lightened with a composition comprising one or more persulfates, the b* and L* values ​​being measured in the CIE L*a*b* system.

26. A method for simultaneously bleaching and dyeing keratin fibers, said method comprising applying to said keratin fibers a composition according to claim 22.

27. The method according to any one of claims 24 to 26, wherein: The composition according to any one of claims 1 to 23 is produced by mixing: ■ A composition (A) comprising: - one or more chemical oxidizing agents as defined in claim 1 or 2, selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts, and mixtures thereof; and - optionally one or more compounds iv) as defined in claim 1 or 16 and / or one or more compounds iv') as defined in claim 1 or 17; and ■ A composition (B) comprising: - one or more compounds as defined in claim 1, 7 or 10, selected from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof; and - one or more silicates as defined in claim 1 or 11; and - optionally one or more colorants, preferably chosen from direct dyes and oxidation dyes and mixtures thereof; and - optionally one or more compounds iv) as defined in claim 1 or 16 and / or one or more compounds iv') as defined in claim 1 or 17; and ■Optionally a composition (C) comprising: - one or more colorants, preferably chosen from direct dyes and oxidation dyes and / or mixtures thereof; and - optionally one or more compounds iv) as defined in claim 1 or 16 and / or one or more compounds iv') as defined in claim 1 or 17; It should be understood that: - at least one of the compositions (A) or (B) or at least one of the compositions (A) or (B) or (C) - if composition (C) is present - comprises one or more compounds iv) as defined in claim 1 or 16; and - at least one of the compositions (A) or (B) or at least one of the compositions (A) or (B) or (C) - if composition (C) is present - comprises one or more compounds iv') as defined in claim 1 or 17.

28. Use of a composition according to any one of claims 1 to 21 or 23 for lightening keratin fibres, preferably for lightening keratin fibres while simultaneously deyellowing them.

29. Use of a composition according to claim 22 for the simultaneous bleaching and dyeing of keratin fibers.

30. A multi-compartment device, comprising: ■ a first compartment containing a composition (A) as defined in claim 27; and ■ a second compartment containing a composition (B) as defined in claim 27; as well as ■optionally, a third compartment containing a composition (C) as defined in claim 27; It should be understood that: - at least one of the compositions (A) or (B) or at least one of the compositions (A) or (B) or (C) - if composition (C) is present - comprises one or more compounds iv) as defined in claim 1 or 16; and - at least one of the compositions (A) or (B) or at least one of the compositions (A) or (B) or (C) - if composition (C) is present - comprises one or more compounds iv') as defined in claim 1 or 17.

Images