Composition for lightening keratin fibers and method for lightening keratin fibers using this composition

Abstract

The present invention relates to a composition for lightening keratinous fibers comprising at least one chemical oxidizing agent, at least one (bi)carbonate, at least one silicate and at least one compound selected from esters, and / or amides, and / or imines, as well as to a method for lightening keratinous fibers using this 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, and at least one compound selected from esters and / or amides and / or imines, and a method for lightening keratin fibers using this composition. [Background technology]

[0002] When a person wishes to change the color of their hair, especially if they want a lighter color than their original color, they often need to lighten or bleach their hair beforehand. To do this, lightening or bleaching products are used.

[0003] Hair lightening is evaluated by the "tone scale," which characterizes the degree or extent of lightening. The concept of "tone" is based on the classification of natural hues into stages, with each tone distinguishing the hues immediately preceding or following it. This definition and classification of natural hues is well known to those skilled in hairstyling and has been published in books (Non-Patent Literature 1). The tone scale is expressed on a scale from 1 (black) to 10 (very light blonde), with each unit corresponding to one tone, and the higher the number, the lighter the hue.

[0004] In most cases, methods are known for lightening or decolorizing hair using lightening or decolorizing compositions containing at least one chemical oxidizing agent, usually under alkaline pH conditions. The role of this oxidizing agent is to break down the melanin in the hair, which, depending on the properties of the oxidizing agent present and the pH conditions, leads to noticeable lightening of the fibers, to varying degrees. Therefore, for relatively mild lightening, the oxidizing agent is generally hydrogen peroxide. When stronger lightening is desired, especially when the hair being treated is dark in color, persulfate is usually used in the presence of hydrogen peroxide. However, the lightening achieved by such combinations results in hair with a rather unsightly orange-yellow hue that differs significantly from its natural color, which complicates subsequent coloring, limiting it to warm tones and thus not always satisfactory. Furthermore, persulfate-based lightening compositions can cause deterioration of the fiber quality. Furthermore, persulfate-based compositions are generally not chemically compatible with the presence of oxidative dyes and / or direct dyes that would allow for the decolorization and dyeing of hair fibers in a single step. Therefore, when it is desired to decolorize and dye keratin fibers simultaneously, a two-step method is used, comprising a first step of decolorizing the keratin fibers, followed by a second step of dyeing the keratin fibers using a dyeing composition containing one or more direct dyes and / or one or more oxidative dyes. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] Sciences des traitements capillaires [The Science of Hair Care] by Charles Zviak, 1988, published by Masson, pp. 215 and 278 [Overview of the project] [Problems that the invention aims to solve]

[0006] Therefore, there is a real need to develop compositions that can effectively lighten keratin fibers, especially dark-colored keratin fibers, resulting in less yellowing and a more natural appearance. Such compositions also need to pay more attention to the quality of the fibers, particularly minimizing fiber degradation. Finally, such compositions should also be compatible with the presence of direct dyes and / or oxidative dyes in order to obtain good color accumulation, intensity, and chromaticity, and to enable a wider range of colors to be achieved. [Means for solving the problem]

[0007] To our surprise, the applicant has discovered that all or part of these objectives can be achieved by compositions according to the present invention.

[0008] According to the first aspect, the subject matter of the present invention is i) One or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide salts, hydrogen peroxide generating systems other than those thereof, and mixtures thereof; ii) One or more compounds preferably selected from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems, and mixtures thereof; iii) One or more silicates; iv) One or more compounds selected from esters, amides, imines, and mixtures thereof A composition comprising, - Silicates are present in the composition in a total content ranging from 1% to 40% by mass relative to the total mass of the composition; and - This composition contains persulfate in a total content of less than 5% by mass relative to the total mass of the composition.

[0009] According to a second aspect of the present invention, the subject matter of the present invention is a method for lightening keratin fibers, which comprises applying a composition as defined above to keratin fibers.

[0010] According to a third aspect, the subject of the present invention is a method for simultaneously decolorizing and dyeing keratin fibers, which comprises applying a composition comprising components i) to iv) as defined above, and v) one or more colorants selected from direct dyes, oxidative dyes and mixtures thereof, to keratin fibers.

[0011] According to a fourth aspect, the subject of the present invention is the use of a composition comprising the components i) to iv) as defined above for lightening keratin fibers, preferably while simultaneously reducing the yellowness of the keratin fibers.

[0012] According to a fifth aspect, the subject of the present invention is the use of a composition comprising the above-defined components i) to iv) and v) one or more colorants selected from direct dyes, oxidative dyes and mixtures thereof, for simultaneously decolorizing and dyeing keratin fibers.

[0013] According to a sixth aspect, the subject of the present invention is a device (kit) having a plurality of individual compartments, • Composition (A), - One or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts, and mixtures thereof, preferably hydrogen peroxide. A first compartment containing composition (A) including; • Composition (B), - One or more compounds selected from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems and mixtures thereof, preferably one or more compounds selected from carbonates, bicarbonates and mixtures thereof; and - One or more silicates; and - One or more colorants optionally selected from direct dyes, oxidation dyes and mixtures thereof; and - One or more compounds optionally selected from esters, amides, imines, and mixtures thereof. A second compartment containing composition (B) including; • Optionally, composition (C), - One or more colorants selected from direct dyes, oxidation dyes and mixtures thereof; and - One or more compounds optionally selected from esters, amides, imines, and mixtures thereof. A third compartment containing composition (C) and A device (kit) comprising; if composition (B) or composition (C) is present, it is understood that at least one of compositions (B) and (C) comprises one or more compounds selected from esters, amides, imines and mixtures thereof. [Brief explanation of the drawing]

[0014] [Figure 1] This graph shows the change in intensity L* as a function of parameter b* for the composition according to the present invention (Example 2) and a comparative composition based on parsulfate (Example 1), where the values ​​of L* and b* are measured using the CIE L*a*b* system. [Modes for carrying out the invention]

[0015] For the purposes of this invention, unless otherwise specified, the following applies: The term "keratin fiber" refers to fibers of human or animal origin, such as hair, body hair, eyelashes, eyebrows, wool, angora, cashmere, or fur. According to the present invention, the keratin fiber is preferably human keratin fiber, more preferably hair. The term "ester" refers to a compound that contains at least one ester functional group. The term "amide" refers to a compound that contains at least one amide functional group. The term "imine" refers to a compound that contains at least one imine functional group. The term "salt" means an addition salt with a mineral or organic acid or base. Addition salts with acids are selected from addition salts with acids such as hydrochloric acid, hydrobromic acid, sulfuric acid, citric acid, succinic acid, tartaric acid, lactic acid, tosylic acid, benzenesulfonic acid, phosphoric acid, or acetic acid. Addition salts with bases are selected from addition salts with basicizing agents as defined below, particularly alkali metal hydroxides, alkaline earth metal hydroxides, aqueous ammonia, amines, or alkanolamines. The term "alkyl group" means a linear or branched saturated hydrocarbon group containing 1 to 30 carbon atoms, preferably 1 to 26 carbon atoms, and 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. · (C x ~C y The term "alkyl group" refers to an alkyl group containing x to y carbon atoms. The term "alkenyl group" means a linear or branched hydrocarbon group comprising one or more conjugated or unconjugated ethylene unsaturated atoms and 1 to 30 carbon atoms, preferably 1 to 26 carbon atoms, more preferably 1 to 22 carbon atoms, such as ethylenyl, n-propyrenyl, isopropyrenyl, butyrenyl, n-pentyrenyl, n-hexylenyl, n-decylenyl, n-dodecylenyl, tetradecylenyl, hexadecylenyl, or eicosilenyl. · (C x ~C y The term "alkenyl group" refers to an alkenyl group containing x to y carbon atoms. The term "(poly)(hydroxy)alkyl group" means alkyl group, hydroxyalkyl group, or polyhydroxyalkyl group. The term "hydroxyalkyl group" refers to an alkyl group substituted with a hydroxyl group (-OH); The term "polyhydroxyalkyl group" refers to an alkyl group that is substituted with at least two hydroxyl groups (-OH). The term "(complex)cyclic group" refers to a cyclic or complex cyclic group. The term "cyclic group" means a monocyclic or polycyclic condensed or uncondensed, saturated or unsaturated, especially aromatic, carbocyclic ring containing 6 to 22 carbon atoms, which can be substituted with one or more identical or different groups selected from: (C1-C6) alkyl, (C1-C6) alkoxy, (C1-C6) hydroxyalkyl, hydroxyl (-OH), or carboxyl (-COOH). The term "heterocyclic group" means a monocyclic or polycyclic condensed or uncondensed, saturated or unsaturated, especially aromatic group containing 5 to 22 ring members and containing 1 to 3 heteroatoms selected from nitrogen, oxygen, and sulfur atoms, which can be substituted with one or more identical or different groups selected from: (C1-C6) alkyl, (C1-C6) alkoxy, (C1-C6) hydroxyalkyl, hydroxyl (-OH), or carboxyl (-COOH). The term "silicate" means silicate. • The term "coloring agent" means an oxidation dye, direct dye, or pigment. The term "oxidation dye" refers to oxidation dye precursors selected from oxidizing bases and couplers. Oxidizing bases and couplers are colorless or pale compounds that yield colored chemical species through condensation reactions in the presence of an oxidizing agent. The term "direct dyes" refers to natural and / or synthetic dyes, including extracts, other than oxidation dyes. These are colored compounds that spread across the surface of fibers. They can be ionic or nonionic, i.e., anionic, cationic, neutral, or nonionic. The term "chemical oxidizing agent" refers to oxidizing agents other than atmospheric oxygen.

[0016] Unless otherwise specified, when a compound is referred to in this application, it includes its optical isomers, geometric isomers, tautomers, salts or solvates, such as hydrates, and mixtures thereof.

[0017] The terms "at least one" and "one or more" are synonymous and can be used interchangeably.

[0018] The terms "lightening" and "decolorization" are synonymous and can be used interchangeably.

[0019] composition According to the first aspect, the subject of the present invention is a composition comprising components i) to iv) as defined above.

[0020] The applicant has found, surprisingly, that the compositions according to the present invention can effectively lighten keratin fibers with less yellowing and a more natural result. When comparing the color of keratin fibers treated with the compositions according to the present invention to the color of keratin fibers treated with lightening compositions known from the prior art, it is observed that the b* value, measured in the CIE L*a*b* system, is lower for the compositions according to the present invention than for the lightening compositions known from the prior art at equivalent intensity levels L*.

[0021] Furthermore, the composition according to the present invention pays greater attention to the quality of the fibers, and in particular minimizes fiber degradation.

[0022] According to one preferred embodiment, the composition according to the present invention is i) Hydrogen peroxide; ii) One or more compounds selected from carbonates, bicarbonates, and mixtures thereof; iii) One or more silicates; iv) One or more compounds selected from esters, amides, imines, and mixtures thereof Includes, - Silicates are present in the composition in a total content ranging from 1% to 40% by mass relative to the total mass of the composition; and - It is understood that this composition contains persulfate in a total content of less than 5% by mass relative to the total mass of the composition.

[0023] Chemical oxidizing agent The composition according to the present invention comprises i) one or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts, and mixtures thereof.

[0024] Other hydrogen peroxide generating systems besides peroxide salts can be selected from urea peroxide, polymer complexes capable of releasing hydrogen peroxide, oxidases, and mixtures thereof.

[0025] Examples of polymer composites capable of releasing hydrogen peroxide include, in particular, polyvinylpyrrolidone / H2O2 in powder form, and other polymer composites described in U.S. Patent Nos. 5,008,093, 3,376,110, and 5,183,901.

[0026] Oxidizing 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.

[0027] According to certain embodiments, a hydrogen peroxide generating system other than hydrogen peroxide and / or peroxide salts may be added to the composition according to the present invention immediately before application to keratin fibers. An intermediate composition containing a hydrogen peroxide generating system other than hydrogen peroxide and / or peroxide salts may be called an oxidizing composition and may also contain various further compounds or various adjuvants conventionally used in compositions for lightening keratin fibers.

[0028] According to a preferred embodiment, the composition according to the present invention contains hydrogen peroxide as a chemical oxidizing agent.

[0029] The chemical oxidizing agent is preferably present in the composition in a total content of 1% to 12% by mass, more preferably 3% to 9% by mass, and even more preferably 3.5% to 8.5% by mass, relative to the total mass of the composition.

[0030] According to one preferred embodiment, hydrogen peroxide is present in the composition in a total content of 1% to 12% by mass, preferably 3% to 9% by mass, and more preferably 3.5% to 8.5% by mass, based on the total mass of the composition.

[0031] (Bi)carbonate and / or (Bi)carbonate generation system The composition according to the present invention further comprises ii) one or more compounds selected from carbonates, carbonate generating systems, bicarbonates, bicarbonate generating systems, and mixtures thereof.

[0032] 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.

[0033] In 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.

[0034] Compound ii) is present in the composition in a total content of preferably 0.01% to 20% by mass, preferably 1% to 15% by mass, more preferably 2% to 15% by mass, and even more preferably 4% to 15% by mass, relative to the total mass of the composition.

[0035] Carbonate and / or carbonate generation system The term "carbonate generation system" refers to a system that generates carbonates in situ, such as carbon dioxide or parkarbonate in water.

[0036] Preferably, the carbonate is - Alkali metal carbonates; - Alkaline earth metal carbonates; - Lanthanide carbonate; - Transition metal carbonates; - Bismuth carbonate; - cadmium carbonate; - potassium carbonate; - zinc carbonate; - a compound of formula (N + R 1 R 2 R 3 R 4 )2·CO3 2- (wherein R 1 ,R 2 ,R 3 and R 4 each independently represents a hydrogen atom or a (C1-C4) alkyl group optionally substituted by a hydroxyl group); - guanidine carbonate; - mixtures thereof selected from.

[0037] More preferably, the carbonate is selected from 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, potassium carbonate, zinc carbonate, ammonium carbonate, guanidine carbonate, tetraethylammonium carbonate and mixtures thereof.

[0038] Even more preferably, the carbonate is selected from sodium carbonate, potassium carbonate, cesium carbonate, magnesium carbonate, calcium carbonate, cerium carbonate, manganese carbonate, zinc carbonate, ammonium carbonate, guanidine carbonate and mixtures thereof.

[0039] Most preferably, the carbonate is selected from sodium carbonate, potassium carbonate, magnesium carbonate, calcium carbonate, ammonium carbonate and mixtures thereof.

[0040] According to a particularly preferred embodiment, the carbonate contained in the composition is ammonium carbonate.

[0041] The carbonate and / or carbonate generating system is preferably present in the composition in a total content of 0.01% to 20% by mass, more preferably 1% to 20% by mass, and even more preferably 1% to 10% by mass, relative to the total mass of the composition.

[0042] According to a preferred embodiment, the carbonate is present in the composition in a total content of 0.01% to 20% by mass, preferably 1% to 20% by mass, and more preferably 1% to 10% by mass, based on the total mass of the composition.

[0043] According to a preferred embodiment, compound ii) is selected from carbonates, carbonate generating systems, and mixtures thereof, preferably carbonates.

[0044] Bicarbonate and / or Bicarbonate Generating System The term "bicarbonate generation system" refers to a system that generates carbon dioxide by generating bicarbonate in situ, for example, in water, or by buffering the carbonate with a mineral or organic acid.

[0045] Preferably, bicarbonate is - Alkali metal bicarbonates; - Alkaline earth metal bicarbonates; - Formula N + R 1 R 2 R 3 R 4 ,·HCO3 - (In the formula, R 1 , R 2 , R 3 and R 4 A compound is a (C1-C4) alkyl group that is independently substituted by a hydrogen atom or optionally by a hydroxyl group; - Aminoguanidine bicarbonate; - those mixtures Selected from.

[0046] More preferably, the bicarbonate 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.

[0047] More preferably, the bicarbonate is selected from sodium bicarbonate, potassium bicarbonate, cesium bicarbonate, calcium bicarbonate, magnesium bicarbonate, ammonium bicarbonate, and mixtures thereof.

[0048] In most preference, the bicarbonate is selected from sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate, and mixtures thereof.

[0049] In a particularly preferred embodiment, the bicarbonate contained in the composition is ammonium bicarbonate.

[0050] Bicarbonate can be derived from natural water, such as spring water from the Vichy Basin or La Roche Posay, or from Badoit water.

[0051] Bicarbonate and / or bicarbonate generating systems are preferably present in the composition in a total content of 0.01% to 20% by mass, more preferably 1% to 15% by mass, even more preferably 2% to 15% by mass, and most preferably 4% to 15% by mass, based on the total mass of the composition.

[0052] According to a preferred embodiment, bicarbonate is present in a total content of 0.01% to 20% by mass, preferably 1% to 15% by mass, more preferably 2% to 15% by mass, and even more preferably 4% to 15% by mass, based on the total mass of the composition.

[0053] According to a preferred embodiment, compound ii) is selected from bicarbonates, bicarbonate generating systems, and mixtures thereof, preferably from bicarbonates.

[0054] silicate The composition according to the present invention also includes iii) one or more silicates.

[0055] The silicate is preferably water-soluble.

[0056] The term "water-soluble silicate" refers to a silicate having a solubility of more than 0.5% by mass, preferably more than 1% by mass, in water at normal room temperature (25°C) and atmospheric pressure (760 mmHg).

[0057] Preferably, the silicate is selected from alkali metal silicates, alkaline earth metal silicates, aluminum silicate, trimethylammonium silicate, and mixtures thereof.

[0058] More preferably, the silicate is selected from sodium silicate, potassium silicate, calcium silicate, aluminum silicate, trimethylammonium silicate, and mixtures thereof.

[0059] More preferably, the silicate is selected from sodium silicate.

[0060] Preferably, the silicate is selected from compounds having the INCI names sodium silicate (CAS: [1344-09-8]) and / or sodium metasilicate (CAS: [6834-92-0]).

[0061] Silicates are present in the composition in a total content of 1% to 40% by mass, preferably 2% to 35% by mass, more preferably 3% to 35% by mass, and even more preferably 4% to 20% by mass, relative to the total mass of the composition.

[0062] The mass ratio of the total amount of carbonate and / or carbonate generating system to the total amount of silicate is preferably 0.00025 to 20, more preferably 0.028 to 10, and even more preferably 0.028 to 3.4.

[0063] According to a preferred embodiment, the mass ratio of the total amount of carbonate to the total amount of silicate is 0.00025 to 20, preferably 0.028 to 10, and more preferably 0.028 to 3.4.

[0064] The mass ratio of the total amount of carbonate and / or carbonate generating system to the total amount of chemical oxidizing agent is preferably 0.0008 to 20, more preferably 0.1 to 6.6, and even more preferably 0.1 to 2.9.

[0065] According to a preferred embodiment, the mass ratio of the total amount of carbonate to the total amount of chemical oxidizing agent i) is 0.0008 to 20, preferably 0.1 to 6.6, and more preferably 0.1 to 2.9.

[0066] According to a preferred embodiment, the mass ratio of the total amount of carbonate to 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.

[0067] The mass ratio of the total amount of bicarbonate and / or bicarbonate generating system to 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.

[0068] According to a preferred embodiment, the mass ratio of the total amount of bicarbonate to the total amount of silicate is 0.00025 to 20, preferably 0.02 to 7.5, and more preferably 0.05 to 5.

[0069] The mass ratio of the total amount of bicarbonate and / or bicarbonate generating system to the total amount of chemical oxidizing agent is preferably 0.0008 to 20, more preferably 0.11 to 5, and even more preferably 0.2 to 4.2.

[0070] According to a preferred embodiment, the mass ratio of the total amount of bicarbonate to 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.

[0071] According to a more preferred embodiment, the mass ratio of the total amount of bicarbonate to the total amount of hydrogen peroxide is 0.0008 to 20, preferably 0.11 to 5, and more preferably 0.2 to 4.2.

[0072] The mass ratio of the total amount of carbonate and / or carbonate generating system to the total amount of bicarbonate and / or bicarbonate generating system is preferably 0.0005 to 2000, more preferably 0.06 to 20, and even more preferably 0.06 to 5.

[0073] According to a preferred embodiment, the mass ratio of the total amount of carbonate to the total amount of bicarbonate is 0.0005 to 2000, preferably 0.06 to 20, and more preferably 0.06 to 5.

[0074] Esters, amides, and imines The composition according to the present invention further comprises iv) one or more compounds selected from esters, amides, imines and mixtures thereof.

[0075] Preferably, compound iv) is of the following formula (I): [ka] A compound of , its salts, its optical isomers, its geometric isomers, its tautomers, its solvates and mixtures thereof, selected from the compounds of , in formula (I), A represents a saturated or unsaturated linear or branched hydrocarbon group containing 1 to 30 carbon atoms, optionally interrupted by one or more non-adjacent oxygen atoms and / or optionally substituted by one or more identical or different groups selected from -CO-, -OCO-, and -COO-, and / or optionally substituted by one or more identical or different groups selected from (heterocyclic) groups optionally substituted by a hydroxyl group (-OH), a group -COOAk1, or one or more hydroxyl groups (-OH); X1 independently represents an oxygen atom or the -NR- group, preferably an oxygen atom; ·X2 represents an oxygen atom or the -NR- group, preferably an oxygen atom; p = 0 or 1; B is, - A (heterocyclic) group optionally substituted with one or more identical or different groups selected from hydroxyl(-OH), -OR'', -COOA', -OCOA', or (poly)(hydroxy)alkyl; - Base-OR'; - group-COOA'; - group-OCOA' Represents a saturated or unsaturated linear, branched, or cyclic hydrocarbon group containing 1 to 30 carbon atoms, optionally substituted by one or more identical or different groups selected from; and / or optionally interrupted by one or more non-adjacent oxygen atoms and / or by one or more identical or different groups selected from -OCO-, -COO-; ·A' represents a saturated or unsaturated linear or branched hydrocarbon group containing 1 to 30 carbon atoms, optionally interrupted by one or more non-adjacent oxygen atoms and / or optionally substituted by one or more identical or different groups selected from -CO-, -OCO-, and -COO-; R represents a hydrogen atom or an alkyl group, particularly a (C1-C4) alkyl group; ·R' represents an alkyl group that is optionally substituted with one or more identical or different groups selected from a hydrogen atom or hydroxyl (-OH) or -OCOA'; ·R'' is, - Alkyl groups optionally substituted with one or more hydroxyl groups (-OH); or - A (heterocyclic) group optionally substituted with one or more identical or different groups selected from hydroxyl(-OH) and (poly)(hydroxy)alkyl groups. It represents; Ak1 represents an alkyl group that can be optionally substituted by -COOAk2; Ak2 represents an alkyl group; R and B can form heterocycles together with the nitrogen atom containing them; A and B, in particular, - A (heterocyclic) group that is optionally substituted with one or more identical or different groups selected from hydroxyl(-OH) and (poly)(hydroxy)alkyl groups; - Hydroxyl group (-OH); - Base-OR''; - (Poly)(Hydroxy)alkyl group It is possible to form a heterocycle together which is optionally substituted by one or more identical or different groups selected from; If X1 represents the group -NR-, then it is understood that A and B may represent hydrogen atoms.

[0076] More preferably, compound iv) is selected from the following compounds 1 to 93, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates, and mixtures thereof. [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka]

[0077] More preferably, compound iv) is selected from compounds 1 to 63, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates, and mixtures thereof.

[0078] More preferably, compound iv) is selected from compounds 1, 4, 5, 6, 12, 15, 16, 22, 24, 26, 27, 31, 33, 37, 41, 53, 54, 55, 58, 60, 62 and 63, their salts, their optical isomers, their geometric isomers, their tautomers, their solvates, and mixtures thereof.

[0079] Compound iv) is preferably present in the composition in an amount ranging from 0.01% to 50%, more preferably from 1% to 30%, and even more preferably from 2% to 15% by mass, relative to the total mass of the composition.

[0080] The composition preferably contains a total content of less than 5% by mass, more preferably less than 1% by mass, even more preferably less than 0.1% by mass, most preferably less than 0.01% by mass, and even better less than 0.001% by mass.

[0081] According to a particularly preferred embodiment, the composition does not contain magnesium carbonate.

[0082] This composition contains parsulfate in a total content of less than 5% by mass, preferably less than 1% by mass, more preferably less than 0.1% by mass, even more preferably less than 0.01% by mass, and most preferably less than 0.001% by mass.

[0083] According to a particularly preferred embodiment, the composition does not contain parsulfate.

[0084] According to certain embodiments, the composition also includes v) one or more colorants selected from direct dyes, oxidative dyes and mixtures thereof.

[0085] If present, the colorants are preferably present in a total content of 0.001% to 10% by mass, preferably 0.01% to 4% by mass, and more preferably 0.1% to 1% by mass, relative to the total mass of the composition.

[0086] Oxidation dyes Oxidative dyes are generally selected from one or more oxidizing bases in optional combination with one or more coupling agents (also known as couplers).

[0087] Oxidizing bases This composition may optionally contain one or more oxidizing bases, preferably selected from those conventionally used for dyeing keratin fibers.

[0088] For example, oxidizing bases are selected from p-phenylenediamine, bis(phenyl)alkylenediamine, p-aminophenol, ortho-aminophenol, and heterocyclic bases, as well as their corresponding addition salts.

[0089] Examples of para-phenylenediamines that may be mentioned include para-phenylenediamine, para-toluenediamine, 2-chloro-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,5-dimethyl-para-phenylenediamine, N,N-dimethyl-para-phenylenediamine, N,N-diethyl-para-phenylenediamine, N,N-dipropyl-para-phenylenediamine, 4-amino-N,N-diethyl-3-methylaniline, N,N-bis(β-hydroxyethyl)para-phenylenediamine, 4-N,N-bis(β-hydroxyethyl)amino-2-methylaniline, 4-N,N-bis(β-hydroxyethyl)amino-2-chloroaniline, 2-β-hydroxyethyl-para-phenylenediamine, 2-methoxymethyl-para-phenylenediamine, and 2-fluoro-para-phenylenediamine. Examples include amine, 2-isopropyl-para-phenylenediamine, N-(β-hydroxypropyl)-para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N,N-dimethyl-3-methyl-para-phenylenediamine, N-ethyl-N-(β-hydroxyethyl)-para-phenylenediamine, N-(β,γ-dihydroxypropyl)-para-phenylenediamine, N-(4'-aminophenyl)-para-phenylenediamine, N-phenyl-para-phenylenediamine, 2-β-hydroxyethyloxy-para-phenylenediamine, 2-β-acetylaminoethyloxy-para-phenylenediamine, N-(β-methoxyethyl)-para-phenylenediamine, 4-aminophenylpyrrolidine, 2-thienyl-para-phenylenediamine, 2-β-hydroxyethylamino-5-aminotoluene, and 3-hydroxy-1-(4'-aminophenyl)pyrrolidine, as well as corresponding addition salts with acids.

[0090] Among the paraphenylenediamines mentioned above, paraphenylenediamine, paratoluenediamine, 2-isopropyl-paraphenylenediamine, 2-β-hydroxyethyl-paraphenylenediamine, 2-β-hydroxyethyloxy-paraphenylenediamine, 2,6-dimethyl-paraphenylenediamine, 2,6-diethyl-paraphenylenediamine, 2,3-dimethyl-paraphenylenediamine, N,N-bis(β-hydroxyethyl)-paraphenylenediamine, 2-chloro-paraphenylenediamine, and 2-β-acetylaminoethyloxy-paraphenylenediamine, as well as their corresponding addition salts with acids, are particularly preferred.

[0091] Examples of bis(phenyl)alkylenediamines that may be mentioned include 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, as well as their corresponding addition salts.

[0092] Examples of para-aminophenols mentioned include para-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, as well as their corresponding addition salts with acids.

[0093] Examples of ortho-aminophenols that may be mentioned include 2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol, and 5-acetamido-2-aminophenol, as well as their corresponding addition salts.

[0094] Examples of heterocyclic bases that may be mentioned include pyridine, pyrimidine, and pyrazole derivatives.

[0095] Examples of pyridine derivatives that may be mentioned include the compounds described in British Patent No. 1026978 and British Patent No. 1153196, such as 2,5-diaminopyridine, 2-(4-methoxyphenyl)amino-3-aminopyridine, and 3,4-diaminopyridine, and their corresponding addition salts.

[0096] Other pyridine-oxidizing bases useful in the present invention include, for example, 3-aminopyrazolo[1,5-a]pyridine or its corresponding addition salt, which are oxidizing bases described in French Patent Application Publication No. 2801308. Examples that may be mentioned include pyrazolo[1,5-a]pyrido-3-ylamine, 2-acetylaminopyrazolo[1,5-a]pyrido-3-ylamine, 2-(morpholine-4-yl)pyrazolo[1,5-a]pyrido-3-ylamine, 3-aminopyrazolo[1,5-a]pyridin-2-carboxylic acid, 2-methoxypyrazolo[1,5-a]pyrido-3-ylamine, and (3-aminopyrazolo[1,5-a]pyrido-7-yl)methanol. , 2-(3-aminopyrazolo[1,5-a]pyrido-5-yl)ethanol, 2-(3-aminopyrazolo[1,5-a]pyrido-7-yl)ethanol, (3-aminopyrazolo[1,5-a]pyrido-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-yl)pyrazolo[ 1,5-a]pyrido-3-ylamine, pyrazolo[1,5-a]pyridine-3,5-diamine, 5-(morpholine-4-yl)pyrazolo[1,5-a]pyrido-3-ylamine, 2-[(3-aminopyrazolo[1,5-a]pyrido-5-yl)(2-hydroxyethyl)amino]ethanol, 2-[(3-aminopyrazolo[1,5-a]pyrido-7-yl)(2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[1 Examples include [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, as well as their corresponding addition salts.

[0097] More specifically, the oxidizing base useful in the present invention is selected from 3-aminopyrazolo[1,5-a]pyridine, preferably at the carbon atom at position 2, a) (di)(C1~C6)(alkyl)amino group (this alkyl group may be substituted with at least one hydroxyl, amino, or imidazolium group); b) an optionally cationic 5-7 member heterocycloalkyl group containing 1-3 heteroatoms, optionally substituted by one or more (C1-C6) alkyl groups, such as a di(C1-C4)alkylpiperazinium group; or c) An alkoxy group (C1-C6) that is optionally substituted with one or more hydroxyl groups, such as a β-hydroxyalkoxy group. These are the substances that are substituted and the corresponding addition salts.

[0098] Examples of pyrimidine derivatives that may be mentioned include compounds described in German Patent No. 2359399, Japanese Patent No. 88-169571, Japanese Patent Publication No. 05-63124, and European Patent No. 0770375 or International Publication No. 96 / 15765, such as 2,4,5,6-tetraaminopyridimine, 4-hydroxy-2,5,6-triaminopyridimine, 2-hydroxy-4,5,6-triaminopyridimine, 2,4-dihydroxy-5,6-diaminopyridimine, 2,5,6-triaminopyridin and their addition salts, as well as their tautomers if tautomeral equilibrium exists.

[0099] Pyrazole derivatives that may be mentioned include compounds described in German Patent No. 3843892, German Patent No. 4133957, and International Publication Brochures No. 94 / 08969 and 94 / 08970, French Patent No. A-2733749, and German Patent No. 19543988, such as 4,5-diamino-1-methylpyrazole, 4,5-diamino-1-(β-hydroxyethyl)pyrazole, and 3,4-diamino-1-(β-hydroxyethyl)pyrazole. Minopyrazole, 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-tert-butyl-3-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 Examples include 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, 3,5-diamino-4-(β-hydroxyethyl)amino-1-methylpyrazole, and their corresponding addition salts. 4,5-diamino-1-(β-methoxyethyl)pyrazole may also be used.

[0100] Preferably, 4,5-diaminopyrazole is used, and more preferably, 4,5-diamino-1-(β-hydroxyethyl)pyrazole and / or the corresponding salt is used.

[0101] Pyrazole derivatives that can be similarly mentioned include diamino-N,N-dihydropyrazolopyrazolone and, in particular, those described in French Patent Application No. A-2886136, for example, the following compounds and their corresponding addition salts: 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazolo-1-one, 2-amino-3-ethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazolo-1-one n, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazole-1-one, 2-amino-3-(pyrrolidine-1-yl)-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazole-1-one, 4,5-diamino-1,2-dimethyl-1,2-dihydropyrazole-3-one, 4,5-diamino-1,2-diethyl-1,2-dihydropyrazole-3-one, 4,5-diamino-1,2-di(2-hydroxyethyl)-1,2-dihydropyrazole-3-one, 2-amino-3-(2-hydroxyethyl)amino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazole-1-one, 2-amino-3-dimethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazole-1-one, 2,3-diamino-5,6,7,8-tetrahydro-1H,6H This includes pyridazino[1,2-a]pyrazole-1-one, 4-amino-1,2-diethyl-5-(pyrrolidine-1-yl)-1,2-dihydropyrazole-3-one, 4-amino-5-(3-dimethylaminopyrrolidine-1-yl)-1,2-diethyl-1,2-dihydropyrazole-3-one, and 2,3-diamino-6-hydroxy-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazole-1-one.

[0102] Preferably, 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazole-1-one and / or the corresponding salt are used.

[0103] As the heterocyclic base, it is preferable to use 4,5-diamino-1-(β-hydroxyethyl)pyrazole and / or 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazole-1-one and / or the corresponding salt.

[0104] Coupling agent This composition may optionally contain one or more coupling agents, preferably selected from those conventionally used for dyeing keratin fibers.

[0105] In particular, among these coupling agents, examples include meta-phenylenediamine, meta-aminophenol, meta-diphenol, naphthalene-based coupling agents and heterocyclic coupling agents, as well as their corresponding addition salts.

[0106] For example, 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 2,4-diamino-1-(β-hydroxyethyloxy)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 -Dimethoxypyridine, 1-N-(β-hydroxyethyl)amino-3,4-methylenedioxybenzene, 2,6-bis(β-hydroxyethylamino)toluene, 6-hydroxyindoline, 2,6-dihydroxy-4-methylpyridine, 1-H-3-methylpyrazole-5-one, 1-phenyl-3-methylpyrazole-5-one, 2,6-dimethylpyrazolo[1,5-b][1,2,4]triazole, 2,6-dimethyl[3,2-c][1,2,4]triazole, 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, corresponding addition salts with acids and corresponding mixtures.

[0107] Generally, the addition salts of oxidizing bases and coupling agents that can be used in connection with the present invention are selected from addition salts with acids in particular, such as hydrochloride salts, hydrobromide salts, sulfates, citrates, succinates, tarlates, lactates, tosylates, benzenesulfonates, phosphates, and acetates.

[0108] Advantageously, the oxidizing bases each account for 0.001% to 10% by mass, preferably 0.005% to 5% by mass, relative to the total mass of the composition.

[0109] When present, the coupling agent preferably occupies 0.001% to 10% by mass, more preferably 0.005% to 5% by mass, based on the total mass of the composition respectively.

[0110] Direct dye The composition may also contain one or more direct dyes.

[0111] The direct dye can be a neutral, cationic or anionic direct dye, preferably a neutral or cationic direct dye.

[0112] Direct dyes include acridine; acridone; anthlantron; anthrapyrimidine; anthraquinone; azine; (poly)azo or azo, hydrazono or hydrazone, especially arylhydrazone; azomethine; benzantrone; benzimidazole; benzimidazolone; benzoindole; benzoxazole; benzopyran; benzothiazole; benzoquinone; bis-isoindorine; carboxanilide; coumarin; cyanine, e.g., (di)azacarbocyanine, (di)azahemicyanine, hemicyanine or tetraazacarbocyanine; (di)azine; bisazine; (di)oxazine; (di)thiazine; (di)phenylamine; (di)phenylmethane; (di)ketopyrrolopyrrole; flavonoids, e.g., flavantron and flavone; fluoringin; formazan; indamine; indanthron; indigoid, thi Euindigoids and pseudoindigoids; indophenol; indoaniline; isoindoline; isoindolinone; isobiolantrone; lactone; (poly)methines, such as stilbene or styryl dimethine; naphthalimide; naphthoanilide; naphtholactam; naphthoquinone; nitro, especially nitro(hetero)aromatic; oxadiazole; oxazine; perillone; perillone; perylene; phenazine; phenoxazine; phenothiazine; phthalocyanine; polyene / carotenoid; porphyrin; pyrantrone; pyrazoloantrone; pyrazolone; pyrimidinoantrone; pyronine; quinacridone; quinoline; quinophthalone; squalane; tetrazoline; thiazine; thiopyronine; triarylmethane; or xanthenes; and neutral, cationic or anionic direct dyes selected from natural direct dyes. Preferably, the direct dye is selected from anthraquinone, (poly)azo, azomethine, and stilbene, with a more preferred choice being anthraquinone.

[0113] The direct dyes may be selected from, in particular, neutral, cationic or anionic nitrobenzene direct dyes, neutral, cationic or anionic azo direct dyes, neutral, cationic or anionic tetraazapentamethine dyes, cationic or anionic quinone dyes, particularly 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 dyes are selected from neutral or anionic anthraquinone dyes and stilbenes.

[0114] Examples of neutral, anionic, or cationic direct dyes that can be used in the present invention include the following: acridine; acridone; anthlantron; anthrapyrimidine; anthraquinone; azine; (poly)azo; hydrazono or hydrazone, especially arylhydrazone; azomethine; benzantrone; benzimidazole; benzimidazolone; benzoindole; benzoxazole; benzopyran; benzothiazole; benzoquinone; bisazine; bis-isoindorine; carboxanilide; coumarin; cyanine, e.g., azacarbocyanine, diazacarbocyanine, diazahemicyanine, hemicyanine or tetraazacarbocyanine; diazine; diketopyrrolopyrrole; dioxazine; diphenylamine; diphenylmethane; dithiazine; flavonoids, e.g., flavantron and flavone. Fluoringine; Formazan; Indamine; Indanthron; Indigoids and pseudoindigoids; Indophenol; Indoaniline; Isoindoline; Isoindolinone; Isobiolantron; Lactone; (Poly)methines, such as stilbene or styryl dimethine; Naphthalimide; Naphthoanilide; Naphthotractam; Naphthoquinone; Nitro, especially nitro(hetero)aromatic; Oxadiazole; Oxazine, Perillone; Perinone; Perylene; Phenazine; Phenoxazine; Phenothiazine; Phthalocyanine; Polyene / Carotenoid; Porphyrin; Pyrantron; Pyrazoloantrone; Pyrazolone; Pyrimidinoantrone; Pyronine; Quinacridone; Quinoline; Quinophthalone; Squalane; Tetrazole; Thiazine; Thioindigo; Thiopyronine; Triarylmethane; or Xanthene.

[0115] neutral direct dye The direct dye may preferably be a neutral direct dye selected from the following: hydrazono dyes of formulas (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. [ka] In equations (IIIa), (III'a), (IVa), (IV'a), (IV''a), (Va), (VIa), and (VI'a), Ar represents an aryl group substituted with at least one electron-donating group, for example, i) optionally substituted (C1-C8) alkyl, ii) optionally substituted (C1-C8) alkoxy, iii) optionally substituted (di)(C1-C8)(alkyl)amino by a hydroxyl group in an alkyl group, iv) aryl(C1-C8)alkylamino, v) optionally substituted N-(C1-C8)alkyl-N-aryl(C1-C8)alkylamino, such as phenyl or naphthyl, or Ar represents a juloridine group; ·Ar' represents phenylene, particularly paraphenylene or naphthalene, which is optionally substituted with a divalent (hetero)arylene group, for example, preferably one or more (C1-C8) alkyl groups, hydroxyl groups, or (C1-C8) alkoxy groups; ·Ar'' preferably represents a (hetero)aryl group optionally substituted with at least i) an electron-withdrawing group such as nitro, nitroso, -C(X)-X'-R', or ii) a (di)(C1-C6)(alkyl)amino group, iii) a hydroxyl group, or iv) a (C1-C6) alkoxy group; the (hetero)aryl is particularly selected from phenyl optionally substituted with imidazolyl, triazollyl, indolyl, or pyridyl, or preferably phenyl at the para position of the phenyl group, with at least one group selected from nitro, nitroso, and amino groups; ·X, X', and X'' may be the same or different, representing an oxygen or sulfur atom or the group NR'', preferably an oxygen atom; ·R 1 , R 2 , R 3 and R 4 , which may be the same or different, represents a hydrogen or halogen atom or a group selected from hydroxyl, thiol, (C1-C4) alkyl, (C1-C4) alkoxy, (di)(C1-C4)(alkyl) amino, nitro and nitroso; R' and R'' represent (C1-C4) alkyl groups; ·R a and R b , may be the same or different, and represent a (C1-C8) alkyl group substituted with a hydrogen atom or optionally preferably a hydroxyl group; or As a variant form, substituent R a is a substituent of Ar'' and / or R b is a substituent of Ar and / or R a R b And together with the supporting atoms, they form (hetero)cycloalkyl groups; In particular, R a and R b This represents an alkyl group (C1-C4) that is optionally substituted with a hydrogen atom or a hydroxyl group; T and T' may be the same or different, based on C(R a ) or N, preferably N; 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 defined above). This represents, ·R 22 , R 23 , R 24 , R 25 , R 26 and R 27 They may be the same or different, hydrogen or halogen atoms, or - (C1~C6) alkyl; - Hydroxyl, mercapto; - (C1~C6) alkoxy, (C1~C6) alkylthio; - Aryloxy or arylthio; - Aryl(C1~C6)(alkyl)amino; - (di)(C1~C6)(alkyl)amino; - (di)(hydroxy(C1~C6)alkyl)amino Represents a base selected from; ·Z' represents a hydrogen atom or group NR 28 R 29 (In the formula, R 28 and R 29 They may be the same or different, hydrogen atoms, or - (C1~C6) alkyl; - Polyhydroxy(C1-C6) alkyl groups, such as hydroxyethyl; - One or more groups, in particular i) (C1-C6) alkyl; iii) R°-C(X)-X'-, R°-X'-C(X)- or R°-X'-C(X)-X''- (wherein R° represents a (C1-C6) alkyl group, and X, X', and X'' are as defined above); iv) aryls optionally substituted with a sulfonate; - Cycloalkyl, especially cyclohexyl; (Represents a base selected from) It represents; ·Z is hydroxyl and NR' 28 R' 29 (In the formula, R' 28 and R' 29 They may be the same or different, as defined above in R 28 and R 29 (Represents the same atom or group) It represents the base selected from.

[0116] The direct dye of formula (IV''a) is preferably formula (IV'''a): [ka] (In equation (IV'''a), ·R 1 and R 3 These are the same or may be different, preferably the same, and represent a hydrogen atom, a (C1-C4) alkyl group, such as methyl, or a sugar, such as glucosyl, preferably representing a hydrogen atom; ·R 2 and R 4may be the same or different, preferably the same, and represents a hydrogen atom, a (C1-C4) alkyl or (C1-C4) alkoxy group or an -O-glycosyl group such as -O-glucosyl, etc., preferably a (C1-C4) alkoxy; such as methoxy, etc.; ·X may be the same or different, preferably the same, and represents an oxygen or sulfur atom or N-R (where R represents a hydrogen atom or a group, preferably an oxygen atom); ·ALK represents a (C1-C4) alkylene group such as methylene or ethylene, etc., preferably methylene) is of this kind.

[0117] The direct dyes of formula (IV’’a) can be derived from curcumin, demethoxycurcumin and bis-demethoxycurcumin.

[0118] Preferably, the direct dye is selected from the direct dyes of formula (IV’’a) and (IV’’’a) as defined above and mixtures thereof.

[0119] According to a particularly preferred embodiment, the direct dye is the following compounds (A)-(G) and mixtures thereof:

Chemical formula

[0120] Cationic direct dye The direct dye can be selected from direct dyes that are cationic or have an affinity for acidic substances and are generally referred to as "basic dyes", especially those containing at least one intra- or extra-ring cationic group or cationizable group in their structure.

[0121] Cationic azo dyes that can be used in the present invention include, in particular, cationic dyes described in Kirk-Othmer's Encyclopaedia of Chemical Technology, “Dyes, Azo”, J. Wiley & Sons, as revised on April 19, 2010.

[0122] Cationic azo dyes described in International Publication Brochure 95 / 15144, International Publication Brochure 95 / 01772, and European Patent No. 714954 may also be mentioned.

[0123] Cationic azo dyes listed in Colour Index International, 3rd Edition, particularly the following compounds, may also be mentioned: Basic Red 22; Basic Red 76; Basic Yellow 57; Basic Brown 16; Basic Brown 17.

[0124] Among cationic quinone dyes, those mentioned in Colour Index International, 3rd Edition are suitable for use, and in particular, the following dyes: Basic Blue 22; Basic Blue 99 are noteworthy.

[0125] Among the ajin dyes suitable for use, those listed in Colour Index International, 3rd Edition, such as Basic Blue 17 and Basic Red 2, are noteworthy.

[0126] Among the cationic triarylmethane dyes that can be used in accordance with the present invention, in addition to those listed in the Colour Index International 3rd Edition, the following dyes may be used: Basic Green 1, Basic Violet 3, Basic Violet 14, Basic Blue 7, and Basic Blue 26.

[0127] Examples of direct dyes include those described in U.S. Patent No. 5,888,252, European Patent No. 1,133,975, International Publication No. 03 / 029359, European Patent No. 860,636, International Publication No. 95 / 01772, International Publication No. 95 / 15144, and European Patent No. 714,954.

[0128] Other examples include those listed in K. Venkataraman's encyclopedia "The Chemistry of Synthetic Dyes" (1952, Academic Press, volumes 1-7); in the chapter "Dyes and Dye Intermediates" in "Kirk-Othmer Encyclopaedia of Chemical Technology" (1993, Wiley and Sons); and in various chapters of "Ullmann's Encyclopaedia of Industrial Chemistry" (7th edition, Wiley and Sons).

[0129] Preferably, the cationic direct dye is selected from those obtained from azo and hydrazono type dyes.

[0130] Cationic direct dyes are specified in European Patent No. 850636, French Patent No. 2788433, European Patent No. 920856, International Publication No. 9948465, French Patent No. 2757385, European Patent No. 850637, European Patent No. 918053, International Publication No. 9744004, French Patent No. 2570946, French Patent No. 2285851, German Patent No. 2538363, French Patent No. 2189006, French Patent No. 1560664, French Patent No. 1540423, French Patent No. 1567219, and French Patent No. 1516943. French Patent No. 1221122, German Patent No. 4220388, German Patent No. 4137005, International Publication No. 0166646, U.S. Patent No. 5708151, International Publication No. 9501772, International Publication No. 515144, UK Patent No. 1195386, U.S. Patent No. 3524842, U.S. Patent No. 5879413, European Patent No. 1062940, European Patent No. 1133976, UK Patent No. 738585, German Patent No. 2527638, French Patent No. 2275462, UK Patent No. 1974-27645, Acta Histochem.(1978),61(1),48-52;Tsitologiya(1968),10(3),403-5;Zh.Obshch.Khim.(1970),40(1),195-202;Ann.Chim.(Rome)(1975),65(5-6),305-14;Journal of the Chinese Chemical Society(Taipei)(1998),45(1),209-211;Rev.Roum.Chim.(1988),33(4),377-83;Text.Res.J.(1984),54(2),105-7;Chim .Ind.(Milan)(1974),56(9),600-3;Khim.Tekhnol.(1979),22(5),548-53;Ger.Monatsh.Chem.(1975),106(3),643-8;MRL Bull.Res.Dev.It may be a cationic azo dye as described in (1992), 6(2), 21-7; Lihua Jianyan, Huaxue Fence (1993), 29(4), 233-4; Dyes Pigm. (1992), 19(1), 69-79; Dyes Pigm. (1989), 11(3), 163-72.

[0131] Preferably, the cationic direct dye contains a quaternary ammonium group; more preferably, the cationic charge is located within the ring. This cationic group is, for example, - A cationic group having a (di / tri)(C1~C8)alkylammonium charge outside the ring; or - Cationic groups with intraring charges, for example, acridinium, benzimidazolium, benzobistriazolium, benzopyrazolium, benzopyridazinium, benzoquinolium, benzothiazolium, benzotriazolium, benzoxazolium, bipyridinium, bistetrazolium, dihydrothiazolium, imidazopyridinium, imidazolium, indolium, isoquinolium, naphthoimidazolium, naphthoxyxazolium, naphthpyrazolium, oxadiazolium, Cationic groups having an intraring charge, comprising a cationic heteroaryl group selected from oxazolium, oxazolopyridinium, oxonium, phenazinium, phenoxazolium, pyrazinium, pyrazolium, pyrazoyltriazolium, pyridinium, pyridinoimidazolium, pyrorium, pyririum, quinolium, tetrazolium, thiadiazolium, thiazolium, thiazolopyridinium, thiazoylimidazolium, thiopyrillium, triazolium, or xanthilium. That is the case.

[0132] Examples include cationic hydrazono direct dyes of formulas (IIb) and (IIIb), and azo direct dyes of formulas (IVb) and (Vb). Het + -C(R a )=NN(R b )-Ar,Q - (IIb); Het +-N(R a )-N=C(R b )-Ar,Q - (IIIb); Het + -N=N-Ar,Q(IVb); Ar + -N=N-Ar'',Q - (Vb) In equations (IIb) to (Vb), ·Het + This represents a cationic heteroaryl group such as imidazolium, indolium, or pyridinium, which is preferably optionally substituted by at least one (C1-C8) alkyl group, such as methyl, and preferably has a cationic charge within the ring; ·Ar + This represents an aryl group such as phenyl or naphthyl, which has a cationic charge outside the ring, preferably ammonium, especially tri(C1-C8) alkylammonium, such as trimethylammonium; Ar preferentially represents an aryl group, particularly a phenyl group, that is optionally substituted by one or more electron-donating groups, such as i) optionally substituted (C1-C8) alkyl, ii) optionally substituted (C1-C8) alkoxy, iii) optionally substituted (di)(C1-C8)(alkyl)amino in an alkyl group with a hydroxyl group, iv) aryl(C1-C8)alkylamino, or v) optionally substituted N-(C1-C8)alkyl-N-aryl(C1-C8)alkylamino, or alternatively, Ar represents a juloridine group; ·Ar'' represents an optionally substituted (hetero)aryl group, phenyl or pyrazolyl, which is optionally substituted by one or more (C1-C8) alkyl, hydroxyl, (di)(C1-C8)(alkyl)amino, (C1-C8)alkoxy or phenyl groups, and is otherwise optionally substituted; ·R a and R b represents an alkyl group (C1-C8) that is identical or different and is optionally substituted by a hydrogen atom or, preferentially, a hydroxyl group; or • In addition, substituent R a Het + The substituents of and / or R b is a substituent of Ar and / or R a R b Together with atoms having these, they form (hetero)cycloalkyl groups; in particular, R a and R b represents an alkyl group (C1-C4) that is substituted with a hydrogen atom or optionally with a hydroxyl group; Q - This represents an anionic counterion such as a halide, alkyl sulfate, or alkyl sulfonate.

[0133] In particular, azo and hydrazono direct dyes having intraring cationic charges of formulas (IIb) to (Vb) as defined above can be mentioned. More specifically, cationic direct dyes of formulas (IIb) to (Vb) having intraring cationic charges described in the international publication brochures 95 / 15144 and 95 / 01772 of the patent application and in the specification of European Patent No. 714954 can be mentioned.

[0134] Preferably, the following direct dyes may be used. [ka] In equations (II-1) and (IV-1), ·R 1 This represents an (C1-C4) alkyl group, such as methyl; ·R 2 and R 3 These may be the same or different, representing a hydrogen atom or a (C1-C4) alkyl group, such as methyl; ·R 4 R represents a hydrogen atom or an electron-donating group, such as an optionally substituted (C1-C8) alkyl, an optionally substituted (C1-C8) alkoxy, or an alkyl group optionally substituted with a hydroxyl group (di)(C1-C8)(alkyl)amino; in particular, R 4 is a hydrogen atom; • Z represents a CH group or a nitrogen atom, preferably CH; Q - These are anionic counterions as defined above, particularly halides such as chlorides or alkyl sulfates such as methyl sulfates or mesyl sulfates.

[0135] In particular, the dyes of formulas (II-1) and (IV-1) are Basic Red 51, Basic Yellow 87, and Basic Orange 31 or their derivatives: [ka] (In the formula, Q' is an anionic counterion as defined above, and in particular a halide, such as a chloride or an alkyl sulfate, such as a methyl sulfate or mesyl.) Selected from.

[0136] fluorescent dyes Direct dyes can be selected from fluorescent direct dyes.

[0137] Examples of fluorescent dyes that can be used in the present invention include neutral, anionic, or cationic dyes selected from the following dyes: acridine, acridone, benzantrone, benzimidazole, benzimidazolone, benzoindole, benzoxazole, benzopyran, benzothiazole, coumarin, difluoro{2-[(2H-pyrrole-2-ylidene-kN)methyl]-1H-pyrrolato-kN}boron (BODIPY®), diketopyrrolopyrrole, fluoringine, (poly)methine (especially cyanine and styryl / hemicyanine), naphthalimide, naphthoanilide, naphthylamine (such as dansyl), oxadiazole, oxazine, perillone, perinone, perylene, polyene / carotenoid, squalane, stilbene, and xanthene.

[0138] The fluorescent dyes described in European Patent No. 1133975 specification, International Publication No. 03 / 029359 pamphlet, European Patent No. 860636 specification, International Publication No. 95 / 01772 pamphlet, International Publication No. 95 / 15144 pamphlet and European Patent No. 714954 specification, as well as in “The Chemistry of Synthetic Dyes” by K. Venkataraman, Encyclopaedia, 1952, Academic Press, volumes 1 - 7, in the chapter “Dyes and Dye Intermediates” of “Kirk - Othmer Encyclopaedia of Chemical Technology”, 1993, Wiley and Sons, and in various chapters of “Ullmann’s Encyclopaedia of Industrial Chemistry”, 7th edition, Wiley and Sons, and those described in the handbook “A Guide to Fluorescent Probes and Labeling Technologies”, 10th Ed., Molecular Probes / Invitrogen - Oregon 2005, which is circulated on the Internet or in pre - printed version, may also be mentioned.

[0139] According to a preferred variant form, the fluorescent dye is a cationic polymethine and contains at least one quaternary ammonium group such as those of the following formula (Vb): W + -[C(R c )=C(R d )] m’ -Ar,Q - . In formula (Vb), ·W + represents a cationic heterocyclic or heteroaryl group particularly containing a quaternary ammonium optionally substituted by one or more (C1 - C8) alkyl groups optionally substituted by one or more hydroxyl groups; ·Ar preferably represents one or more of the following: i) one or more halogen atoms, such as chlorine or fluorine; ii) one or more (C1-C8) alkyl, preferably (C1-C4) alkyl groups, 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 groups or preferably (di)(C1-C8)alkylamino groups where the C1-C4 alkyl moiety is optionally substituted by one or more hydroxyl groups, such as (di)hydroxyethylamino; vii) one or more acylamino groups; viii) an aryl group, such as phenyl or naphthyl, optionally substituted by one or more heterocycloalkyl groups, such as piperazinyl, piperidyl or 5- or 6-membered heteroaryl, such as pyrrolidinyl, pyridinyl and imidazolinyl; ·m’ represents an integer in the range of 1 - 4; preferably, m’ is equal to 1 or 2; more preferably, m’ = 1; ·R c and R d may be the same or different and represent a hydrogen atom or an optionally substituted (C1-C8) alkyl group, preferably an optionally substituted (C1-C4) alkyl group, or alternatively, R + adjacent to W c and / or R adjacent to Ar d together with the atoms bearing them form a (hetero)cycloalkyl; in particular, R c is adjacent to W + and they form a (hetero)cycloalkyl, such as cyclohexyl; ·Q - is an anionic counterion as defined above.

[0140] Anionic dyes Direct dyes can be selected from dyes generally referred to as "acid" direct dyes because they are anionic direct dyes or have an affinity for alkaline substances.

[0141] The term "anionic direct dye" means any direct dye that contains at least one CO2R or SO3R substituent in its structure (wherein R represents a hydrogen atom or a cation or ammonium ion derived from a metal or amine). Anionic dyes may be selected from acidic nitro direct dyes, acidic azo dyes, acidic azine dyes, acidic triarylmethane dyes, acidic indoamine dyes, acidic anthraquinone dyes, indigoids, and acidic natural dyes.

[0142] Preferably, the anionic direct dye is an acidic anthraquinone dye.

[0143] The direct dye may preferably be an anionic direct dye selected from the dyes of the following formulas (III), (III'), (IV), (IV'), (V), (V'), (VI), (VI'), (VII), (VIII), (IX), and (X), and mixtures thereof: a) Diaryl anionic azo dye of formula (III) or (III'): [ka] In equations (III) and (III'), R7, R8, R9, R 10 , R'7, R'8, R'9 and R' 10 They may be the same or different, hydrogen atoms, or - (C1~C6) alkyl; - (C1~C6) alkoxy, (C1~C6) alkylthio; - Hydroxyl, mercapto; - Nitro, nitroso; - R°-C(X)-X'-, R°-X'-C(X)-, R°-X'-C(X)-X''- (wherein R° represents a hydrogen atom or a (C1-C6) alkyl group or aryl group, such as phenyl; X, X' and X'' may be the same or different, an oxygen or sulfur atom, or NR (wherein R represents a hydrogen atom or a (C1-C6) alkyl group)); - (O)2S(O - )-,M+ (In the formula, M + (This represents a hydrogen atom or a cationic counterion.) - (O)CO - -,M + (In the formula, M + This is as defined above; - R''-S(O)2-(wherein R'' represents a hydrogen atom or an alkyl, aryl, (di)(C1~C6)(alkyl)amino or aryl(C1~C6)(alkyl)amino group; preferably a phenylamino or phenyl group); - R'''-S(O)2-X'-(wherein R''' represents an optionally substituted (C1-C6) alkyl or aryl group, and X' is as defined above); - (di)(C1~C6)(alkyl)amino; - i) nitro; ii) nitroso; iii) (O) 2S (O) - )-,M + and iv) (C1~C6) alkoxy (wherein M + aryl(C1-C6)(alkyl)amino compounds, which are optionally substituted with one or more groups selected from those defined above; - Selectively substituted heteroaryl groups; preferentially benzothiazolyl groups; - Cycloalkyl, especially cyclohexyl; - Ar-N=N-(wherein Ar represents an aryl group that is optionally substituted; preferably one or more alkyl groups, (O)2S(O) - )-,M + (Or, representing phenyl that is optionally substituted with a phenylamino group.) Represents a base selected from; or - In addition, two adjacent bases, R7 and R8 or R8 and R9 or R9 and R 10 They combine to form a condensed benzo group A'; R'7 and R'8 or R'8 and R'9 or R'9 and R' 10 Together they form a condensed benzo group B'; A' and B' are i) nitro; ii) nitroso; iii) (O) 2S(O - )-,M +;iv) Hydroxyl;v) Mercapto;vi) (Di)(Alkyl)amino;vii) R°-C(X)-X'-;viii) R°-X'-C(X)-;ix) R°-X'-C(X)-X''-;x) Ar-N=N- and xi) Optionally substituted with one or more groups selected from aryl(C1~C6)(Alkyl)aminos;M + , R°, X, X', X'' and Ar are as defined above; ·W is a sigma bond, an oxygen or sulfur atom, or a divalent group i)-NR-(wherein R is as defined above) or ii) methylene-C(R a )(R b )-(wherein, R a and R b R may be the same or different, representing a hydrogen atom or an aryl group, or otherwise. a and R b (These elements, together with the carbon atoms they possess, form a spirocycloalkyl group); preferably, W represents a sulfur atom, or R represents a sulfur atom. a and R b They come together to form a cyclohexyl; Equations (III) and (III') are given on one of the rings A, A', B, B', or C, - At least one (O)2S(O) - )-,M' + group (in the formula, M' + (represents a cationic counterion); or - At least one (O)CO - -,M' + group (in the formula, M' + This represents a cationic counterion; Preferably at least one sodium sulfonate group It is understood that this includes

[0144] Examples of dyes of formula (III) are 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 184, 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 36, Acid Yellow 199, Food Yellow Examples of dyes of formula (III') include 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; examples of dyes of formula (III') include Acid Red 111, Acid Red 134, or Acid Yellow 38.

[0145] b) Pyrazoline anionic azo dye of formula (IV) or (IV'): [ka] In equations (IV) and (IV'), ·R 11 , R 12 and R 13 These may be the same or different hydrogen atoms, halogen atoms, (C1~C6) alkyl groups or -(O)2S(O - ), M + group (in the formula, M+ (This represents the definition above;) ·R 14 This is a hydrogen atom, a (C1-C6) alkyl group, or -C(O)O - M + group (in the formula, M + (This represents the definition above;) ·R 15 This represents a hydrogen atom; ·R 16 represents an oxo group, in which case R' 16 It does not exist, or there is another R 15 R 16 Together with it, they form a double bond; ·R 17 and R 18 They may be the same or different, hydrogen atoms, or - (O)2S(O - )-,M + (In the formula, M + This is as defined above; - Ar-OS(O)2- (wherein Ar represents an optionally substituted aryl group, and preferably represents a phenyl group optionally substituted by one or more alkyl groups) Represents a base selected from; ·R 19 and R 20 Together, they form either a double bond or an optionally substituted benzo group D'; ·R' 16 , R' 19 and R' 20 These may be the same or different, and represent a hydrogen atom, a (C1-C6) alkyl group, or a hydroxyl group; ·R 21 represents a hydrogen atom, a (C1-C6) alkyl group, or a (C1-C6) alkoxy group; ·R a and R b They may be the same or different, as defined above; preferentially, R a represents a hydrogen atom, and R b This represents an aryl group, such as phenyl; • Y represents either a hydroxyl group or an oxo group; · [ka] This represents a single bond when Y is an oxo group; and a double bond when Y is a hydroxyl group; Equations (IV) and (IV') are given on one of the rings D or E, - At least one (O)2S(O) - )-,M' + group (in the formula, M' + (represents a cationic counterion); or - At least one (O)CO - -,M' + group (in the formula, M' + This represents a cationic counterion; Preferably at least one sodium sulfonate group It is understood that this includes

[0146] Examples of dyes of formula (IV) include Acid Red 195, Acid Yellow 23, Acid Yellow 27, or Acid Yellow 76; an example of a dye of formula (IV') is Acid Yellow 17.

[0147] c) Anthraquinone dye of formula (V) or (V'): [ka] In equations (V) and (V'), ·R 22 , R 23 , R 24 , R 25 , R 26 and R 27 They may be the same or different, hydrogen atoms, halogen atoms, or - (C1~C6) alkyl; - Hydroxyl, mercapto; - (C1~C6) alkoxy, (C1~C6) alkylthio; - Preferably alkyl and (O)2S(O - )-,M + (In the formula, M + aryloxy or arylthio groups are optionally substituted with one or more groups selected from those defined above; - Alkyl and (O)2S(O - )-,M + (In the formula, M + aryl(C1-C6)(alkyl)amino compounds are optionally substituted with one or more groups selected from those defined above; - (di)(C1~C6)(alkyl)amino; - (di)(hydroxy(C1~C6)alkyl)amino; - (O)2S(O - )-,M + (In the formula, M + (As defined above) Represents a base selected from; ·Z' represents a hydrogen atom or NR 28 R 29 Represents the base (in the formula, R 28 and R 29 They may be the same or different, hydrogen atoms, or - (C1~C6) alkyl; - Polyhydroxy(C1-C6) alkyl groups, such as hydroxyethyl; - One or more groups, especially i) (C1-C6) alkyl groups, such as methyl, n-dodecyl, or n-butyl; ii) (O)2S(O - )-,M + (In the formula, M + (i) is as defined above);iii) aryls optionally substituted by R°-C(X)-X'-, R°-X'-C(X)-, or R°-X'-C(X)-X''- (wherein R°, X, X', and X'' are as defined above, and preferably R° represents a (C1-C6) alkyl group); - Cycloalkyl, especially cyclohexyl Represents a base selected from; ·Z is hydroxyl and NR'28 R' 29 (In the formula, R' 28 and R' 29 They may be the same or different, as defined above in R 28 and R 29 (Represents the same atom or group) Represents a base selected from; Equations (V) and (V') are, - At least one (O)2S(O) - )-,M' + group (in the formula, M' + (represents a cationic counterion); or - At least one (O)CO - -,M' + group (in the formula, M' + This represents a cationic counterion; Preferably at least one sodium sulfonate group It is understood that this includes

[0148] Examples of dyes of formula (V) include 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, or Ext. Violet No. 2; an example of a dye of formula (V') is Acid Black 48.

[0149] d) Nitro dyes of formula (VI) or (VI'): [ka] In equations (VI) and (VI'), ·R 30 , R 31 and R 32 They may be the same or different, hydrogen atoms, halogen atoms, or - (C1~C6) alkyl; - (C1-C6) alkoxy or (C1-C6) alkylthio, optionally substituted with one or more hydroxyl groups; - Hydroxyl, mercapto; - Nitro, nitroso; - Polyhalo(C1~C6)alkyl; - R°-C(X)-X'-, R°-X'-C(X)-, or R°-X'-C(X)-X''- (wherein R°, X, X', and X'' are as defined above); - (O)2S(O - )-,M + (In the formula, M + This is as defined above; - (O)CO - -,M + (In the formula, M + This is as defined above; - (di)(C1~C6)(alkyl)amino; - (di)(hydroxy(C1~C6)alkyl)amino; - Heterocycloalkyls, such as piperidino, piperazino, or morpholino. Represents a base selected from; In particular, R 30 , R 31 and R 32 This represents a hydrogen atom; ·R c and R d These may be the same or different, representing a hydrogen atom or a (C1-C6) alkyl group; W is as defined above; in particular, W represents an N(H)-group; ALK represents a linear or branched divalent C1-C6 alkylene group; in particular, ALK represents a -CH2-CH2- group; n has a value of 1 or 2; • p represents an integer in the range of 1 to 5; • q represents an integer in the range of 1 to 4; ·u has a value of 0 or 1; If n has a value of 1, J represents a nitro group or a nitroso group; in particular, a nitro group; If n has a value of 2, J is an oxygen or sulfur atom or a divalent -S(O) m - Represents the -SO2- group (where m is an integer, either 1 or 2); preferentially, J represents the -SO2- group; ·M'' represents a hydrogen atom or a cationic counterion; · [ka] R may or may not exist, and one or more R as defined above. 30 This represents a benzo group that is optionally substituted by another group; Equations (VI) and (VI') are, - At least one (O)2S(O) - )-,M' + group (in the formula, M' + (represents a cationic counterion); or - At least one (O)CO - -,M' + group (in the formula, M' + This represents a cationic counterion; Preferably at least one sodium sulfonate group It is understood that this includes

[0150] Examples of dyes of formula (VI) include Acid Brown 13 and Acid Orange 3; examples of dyes of formula (VI') include Acid Yellow 1, sodium salt of 2,4-dinitro-1-naphthol-7-sulfonic acid, 2-piperidino-5-nitrobenzenesulfonic acid, 2-(4'-N,N-(2''-hydroxyethyl)amino-2'-nitro)anilineethanesulfonic acid, 4-β-hydroxyethylamino-3-nitrobenzenesulfonic acid; and Ext. D&C Yellow 7.

[0151] e) Triarylmethane dyes of formula (VII): [ka] In equation (VII), ·R 33 , R 34 , R 35 and R 36 These are the same or different hydrogen atoms or groups selected from (C1-C6) alkyl, optionally substituted aryl and optionally substituted aryl(C1-C6)alkyl groups; in particular optionally (O) m S(O - )-,M + group (in the formula, M + And m represents a group selected from (C1-C6) alkyl groups and benzyl groups that are substituted with (as defined above); ·R 37 , R 38 , R 39 , R 40 , R 41 , R 42 , R 43 and R 44 They may be the same or different, hydrogen atoms, or - (C1~C6) alkyl; - (C1~C6) alkoxy, (C1~C6) alkylthio; - (di)(C1~C6)(alkyl)amino; - Hydroxyl, mercapto; - Nitro, nitroso; - R°-C(X)-X'-, R°-X'-C(X)-, or R°-X'-C(X)-X''- (wherein R° represents a hydrogen atom or an alkyl or aryl group; X, X', and X'' may be the same or different, an oxygen or sulfur atom, or NR (wherein R represents a hydrogen atom or an (C1-C6) alkyl group)); - (O)2S(O - )-,M + (In the formula, M + (This represents a hydrogen atom or a cationic counterion.) - (O)CO - -,M + (In the formula, M + (As defined above) Represents a base selected from; or - In addition, two adjacent bases, R 41 and R 42 or R 42 and R 43 or R 43 and R 44 When they come together, i) nitro; ii) nitroso; iii) (O) 2S (O - )-,M + iv) Hydroxyl;v) Mercapto;vi) (di)(C1~C6)(alkyl)amino;vii) R°-C(X)-X'-;viii) R°-X'-C(X)-;ix) R°-X'-C(X)-X''-(wherein M + , R°, X, X', and X'' are as defined above) and form a condensed benzo group which is optionally substituted by one or more groups selected from these groups; In particular, R 37 ~R 40 represents a hydrogen atom, and R 41 ~R 44 These may be the same or different, hydroxyl or (O)2S(O - )-,M + group (in the formula, M + (This is as defined above) and represents; R 43 and R 44 When these combine to form a benzo group, this is preferentially (O)2S(O - )- Substituted with a group; At least one of rings G, H, or I is - At least one (O)2S(O) - )-,M' + group (in the formula, M' + (represents a cationic counterion); or - At least one (O)CO - -,M' + group (in the formula, M' + This represents a cationic counterion; Preferably at least one sodium sulfonate group It is understood that this includes

[0152] Examples of dyes of formula (VII) include 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.

[0153] f) Xanthene dyes of formula (VIII): [ka] In equation (VIII), ·R 45 , R 46 , R 47 and R 48 These may be the same or different, representing a hydrogen atom or a halogen atom; ·R 49 , R 50 , R 51 and R 52 They may be the same or different, hydrogen atoms, halogen atoms, or - (C1~C6) alkyl; - (C1~C6) alkoxy, (C1~C6) alkylthio; - Hydroxyl, mercapto; - Nitro, nitroso; - (O)2S(O - )-,M + (In the formula, M + (This represents a hydrogen atom or a cationic counterion.) - (O)CO - -,M + (In the formula, M + (As defined above) Represents a base selected from; In particular, R 53 , R 54 , R 55 and R 48 represents a hydrogen atom or a halogen atom; ·G is an oxygen or sulfur atom or NR e group (in the formula, R e (as defined above) represents; in particular, G represents an oxygen atom; ·L is alkoxide O - M + , thioalkoxide S - M + or NR f group (in the formula, R f represents a hydrogen atom or an (C1-C6) alkyl group, M + This is as defined above; M + This represents (in particular sodium or potassium); ·L' represents an oxygen or sulfur atom or an ammonium group:N + R f R g (In the formula, R f and R g L' represents a hydrogen atom, a (C1-C6) alkyl group, or an optionally substituted aryl group, which may be the same or different; L' represents an oxygen atom or one or more alkyl groups or (O) m S(O - )-,M + Base (wherein m and M + This represents a phenylamino group that is optionally substituted by (as defined above); Q and Q' may be the same or different, representing oxygen or sulfur atoms; in particular, Q and Q' represent oxygen atoms; ·M + This is as defined above.

[0154] Examples of dyes of formula (VIII) include Acid Yellow 73, Acid Red 51, Acid Red 52, Acid Red 87, Acid Red 92, Acid Red 95, and Acid Violet 9.

[0155] g) Indole-based dyes of formula (IX): [ka] In equation (IX), ·R 53 , R 54 , R 55 , R 56 , R 57, R 58 , R 59 and R 60 They may be the same or different, hydrogen atoms, or - (C1~C6) alkyl; - (C1~C6) alkoxy, (C1~C6) alkylthio; - Hydroxyl, mercapto; - Nitro, nitroso; - R°-C(X)-X'-, R°-X'-C(X)-, or R°-X'-C(X)-X''- (wherein R° represents a hydrogen atom or an alkyl or aryl group; X, X', and X'' may be the same or different, an oxygen or sulfur atom, or NR (wherein R represents a hydrogen atom or an (C1-C6) alkyl group)); - (O)2S(O - )-,M + (In the formula, M + (This represents a hydrogen atom or a cationic counterion.) - (O)CO - -,M + (In the formula, M + (As defined above) Represents a base selected from; ·G is an oxygen or sulfur atom or NR e group (in the formula, R e (as defined above) represents; in particular, G represents an oxygen atom; ·R i and R h These may be the same or different, representing a hydrogen atom or a (C1-C6) alkyl group; Equation (IX) is, - At least one (O)2S(O) - )-,M' + group (in the formula, M' + (represents a cationic counterion); or - At least one (O)CO - -,M' + group (in the formula, M' + This represents a cationic counterion; Preferably at least one sodium sulfonate group It is understood that this includes

[0156] Acid Blue 74 is an example of a dye of formula (IX).

[0157] h) Quinoline dye of formula (X): [ka] In equation (X), ·R 61 represents a hydrogen or halogen atom or a (C1-C6) alkyl group; ·R 62 , R 63 and R 64 These may be the same or different hydrogen atoms or (O)2S(O - )-,M + group (in the formula, M + (represents a hydrogen atom or a cationic counterion); or otherwise, R 61 and R 62 or R 61 and R 64 These come together to form one or more (O)2S(O) - )-,M + group (in the formula, M + This forms a benzo group that is optionally substituted by a hydrogen atom or a cationic counterion; Equation (X) is at least one (O)2S(O) - )-,M' + group (in the formula, M' + It is understood that the group comprises a cationic counterion, preferably at least one sodium sulfonate group.

[0158] Examples of dyes of formula (X) include Acid Yellow 2, Acid Yellow 3, and Acid Yellow 5.

[0159] More specifically, the dyes of formulas (III) to (VIII) useful in the present invention are selected from the following: Acid Red 87 (VIII) (CI 45380); sodium salt of 2,4-dinitro-1-naphthol-7-sulfonic acid (VI') (CI 10316); Acid Orange 3 (VI) (CI 10383); Acid Yellow 9 / Food Yellow 2 (III) (CI 13015); Direct Red 45 / Food Red 13 (III) (CI 14780); Acid Black 52 (III) (CI 13711); Acid Yellow 36 (III) (CI 13065); sodium salt of 1-hydroxy-2-(2',4'-xylyl-5-sulfonazo)naphthalene-4-sulfonic acid / Food Red 1 (III) (CI 14700); 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)(CI16230); Acid Red 44(III)(CI16250); Acid Red 33 / Food Red 12(III)(CI17200); Acid Red 184(III)(CI15685); Acid Violet 3(III)(CI19125); Sodium salt of 1-hydroxy-2-(4'-acetamidophenylazo)-8-acetamidonaphthalene-3,6-disulfonic acid / 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)(CI19140); 4'-(sulfonato-2'',4''-dimethyl)-bis-(2,6-phenylazo)-1,3-dihydroxybenzene / Acid Orange 24(III)(CI20170); sodium salt of 1-amino-2-(4'-nitrophenylazo)-7-phenylazo-8-hydroxynaphthalene-3,6-disulfonic acid / 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); Sodium salt of 1-amino-4-cyclohexylamino-9,10-anthraquinone-2-sulfonic acid / Acid Blue 62(V)(CI62045); Acid Blue 78(V)(CI62105); Sodium salt of 4-hydroxy-3-((2-methoxyphenyl)azo)-1-naphthalenesulfonic acid / 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-sulfoanthraquinone / 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) (CI 62055); Sodium salt of 4-hydroxy-3-((2-methoxyphenyl)azo)-1-naphthalenesulfonic acid / Acid Red 4(III) (CI 14710).

[0160] Many of these dyes are listed in the Color Index, published by The Society of Dyers and Colourists, POBox 244, Perkin House, 82 Grattan Road, Bradford, Yorkshire, BD1 2JBN, England.

[0161] The most preferred anionic dyes, in particular, are those with the following Color Index numbers: CI58005 (monosodium salt of 1,2-dihydroxy-9,10-anthraquinone-3-sulfonic acid), CI60730 (monosodium salt of 2-[(9,10-dihydro-4-hydroxy-9,10-dioxo-1-anthracenyl)amino]-5-methylbenzenesulfonic acid), CI15510 (monosodium salt of 4-[(2-hydroxy-1-naphthalenyl)azo]benzenesulfonic acid), CI15985 (disodium salt of 6-hydroxy-5-[(4-sulfophenyl)azo]-2-naphthalenesulfonic acid), and CI17200 (disodium salt of 5-amino-4-hydroxy-3-(phenylazo)-2,7-naphthalenedisulfonic acid). It is a dye specified by CI20470 (disodium salt of 1-amino-2-(4'-nitrophenylazo)-7-phenylazo-8-hydroxy-3,6-naphthalenedisulfonic acid), CI42090 (disodium salt, internal salt of N-ethyl-N-[4-[[4-[ethyl[3-sulfophenyl)methyl]amino]phenyl](2-sulfophenyl)methylene]-2,5-cyclohexadiene-1-ylidene]-3-sulfobenzenemethaneaminium hydroxide), and CI61570 (disodium salt of 2,2'-[(9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino]bis[5-methylbenzenesulfonic acid]).

[0162] Compounds corresponding to the mesomeric or tautomerized forms of structures (III) to (X) may also be used.

[0163] natural dyes Direct dyes can be selected from natural direct dyes.

[0164] Among the natural direct dyes that can be used in accordance with the present invention are lawsone, juglon, alizarin, purpurin, carminic acid, kermesic acid, purpurogarin, protocatecaldehyde, indigo, isatin, curcumin, spinulosine, apigenidine, orcein, brazilin, brazilein, hematein, or hematoxylin. Extracts or decoctions containing these natural dyes, in particular poultices or extracts based on henna dyes, can also be used.

[0165] According to one preferred embodiment, the direct dye is selected from the following triarylmethane direct dyes of formulas (IIa1) and (IIa2) and mixtures thereof. [ka] During the ceremony, R1, R2, R3, and R4 may be the same or different, and represent a group among heteroaryl or heteroaryl(C1-C4)alkyl groups, such as phenyl, aryl(C1-C4)alkyl groups, such as benzyl, which are optionally substituted with a hydrogen atom; or, otherwise, two R1, R2, and / or R3 and R4 groups bonded to the same nitrogen atom, together with the nitrogen atom having them, form an optionally substituted heterocycloalkyl group, such as morpholino, piperazino, or piperidino; preferably, R1, R2, R3, and R4 may be the same or different, and represent a hydrogen atom or a (C1-C4)alkyl group; · R5, R6, R7, R8, R9, R 10 , R 11 , R 12 , R 13 , R 14 , R 15 and R 16is the same or different hydrogen atom, halogen atom, or i) hydroxyl; ii) thiol; iii) amino; iv) (di)(C1~C4)(alkyl)amino, v) (di)arylamino, e.g., (di)phenylamino; vi) nitro; vii) acylamino (-NR-C(O)R') (wherein the formula, the R group is a hydrogen atom or a C1~C4 alkyl group having at least one hydroxyl group optionally, and the R' group is a C1~C2 alkyl group); viiii) carbamoyl ((R)2N-C(O)-) (wherein the formula, the R group is the same or different hydrogen atom or a C1~C4 alkyl group having at least one hydroxyl group optionally); ix) carboxylic acid or ester (-OC(O)R') or (-C(O)OR') (wherein the formula, the R' group is x) an alkyl group selected from (C1-C4) alkoxy; and xiv) an alkyl group selected from (C1-C4) alkylthio; or • In addition, two groups bonded to two adjacent carbon atoms, R5 and R6 and / or R7 and R8 and / or R9 and R 10 and / or R 11 and R 12 and / or R 13 and R 14 and / or R 15 and R 16 However, together with carbon atoms having these, they form a condensed six-membered aryl or heteroaryl ring, preferably a benzo ring, which can further be optionally substituted, preferably an unsubstituted benzo ring; Q -This represents an anionic counterion, preferably selected from halides such as chlorides or bromides and phosphates, for achieving electrical neutrality.

[0166] According to this preferred embodiment, the direct dye is preferably HC Blue 15.

[0167] According to a modified version of the present invention, the direct dye is selected from cationic direct dyes, preferably intra-ring cationic direct dyes, more specifically those of formula (IV-1) as defined above, such as Basic Red 51.

[0168] The direct dye is preferably selected from cationic direct dyes, more preferably from the triarylmethane direct dyes of formulas (IIa1) and (IIa2) as defined above, the direct dye of formula (IV-1) as defined above, and mixtures thereof, and even more preferably from HC Blue 15, Basic Red 51, and mixtures thereof.

[0169] Direct dyes may be present in the composition in a total content of 0.001% to 5% by mass, preferably 0.01% to 3% by mass, more preferably 0.1% to 1% by mass, and even more preferably 0.1% to 0.8% by mass, relative to the total mass of the composition.

[0170] According to a preferred embodiment, the composition contains a coloring agent in a total content of less than 0.1% by mass, preferably less than 0.01% by mass, and more preferably less than 0.001% by mass, based on the total mass of the composition.

[0171] According to a more preferred embodiment, the composition does not contain a coloring agent.

[0172] Further basicizing agents This composition may also include one or more additional basicizing agents other than the carbonates, bicarbonates, and silicates defined above.

[0173] Further basicizing agents may be inorganic or organic. These include i) aqueous ammonia, ii) alkanolamines, such as monoethanolamine, diethanolamine, triethanolamine and their derivatives, iii) oxyethylene- and / or oxypropylene-derived ethylenediamines, iv) inorganic or organic hydroxides, v) amino acids, preferably basic amino acids, such as arginine, lysine, ornithine, citrulline and histidine, and vi) the following formula (II): [ka] (In the formula, - W is a divalent (C1-C8) alkylene group, preferably a propylene group, which is optionally substituted with a hydroxyl group or a C1-C4 alkyl group; - R a , R b , R c and R d (These may be the same or different, and represent a hydrogen atom or a C1-C4 alkyl or C1-C4 hydroxyalkyl group.) compounds of; and vii) those mixtures It can be selected from the following.

[0174] 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 metal hydroxides from groups III, IV, V, and VI; and iv) lanthanide or actinide hydroxides.

[0175] If these are present, the additional basicizing agent is preferably 0.001% to 20% by mass, more specifically 0.005% to 16% by mass, relative to the total mass of the composition.

[0176] According to a preferred embodiment, the composition according to the present invention does not contain a further basicizing agent selected from aqueous ammonia and / or alkanolamines.

[0177] Acidifying agents This composition may further contain one or more acidifying agents.

[0178] Examples of acidifying agents include inorganic acids, such as hydrochloric acid, (ortho)phosphoric acid, boric acid, nitric acid, or sulfuric acid, or organic acids, such as compounds containing at least one carboxylic acid functional group, such as acetic acid, tartaric acid, citric acid, or lactic acid, which contain one sulfonic acid functional group, one phosphonic acid functional group, or one phosphoric acid functional group.

[0179] pH of this composition The composition according to the present invention preferably exhibits a pH of 11 or less, preferably 10.5 or less, and preferably 10 or less.

[0180] The pH of the composition according to the present invention may vary between 8 and 11, preferably between 8 and 10.5, and more preferably between 8 and 10.

[0181] According to certain preferred embodiments, the pH of the composition according to the present invention varies between 8.3 and 10.

[0182] scavenger The compositions according to the present invention optionally contain one or more scavenging agents. Examples of scavenging agents that may be used in the present invention include N,N-dicarboxymethyl-L-glutamic acid and tetrasodium N,N-bis(carboxymethyl)-L-glutamate.

[0183] Other features of this composition The composition preferably contains water in an amount ranging from 5% to 99% by mass, and more preferably from 5% to 80% by mass, relative to the total mass of the composition.

[0184] This composition may further contain at least one organic solvent.

[0185] The term "organic solvent" refers to an organic substance that can dissolve other substances without chemical modification.

[0186] Examples of organic solvents include lower C2-C4 alkanols, such as ethanol and isopropanol; polyols and polyol ethers, such as 2-butoxyethanol, propylene glycol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether, or diethylene glycol monomethyl ether; and aromatic alcohols, such as benzyl alcohol or phenoxyethanol, as well as mixtures thereof.

[0187] The organic solvent is preferably present in a ratio of 0.1% to 40% by mass, more preferably 1% to 30% by mass, and even more preferably 1% to 25% by mass, relative to the total mass of the composition.

[0188] The compositions according to the present invention may be provided in liquid form, serum form, thickened form, and in particular in the form of a gel, cream, wax or paste or foam.

[0189] The compositions according to the present invention may also include one or more further compounds selected from nonionic, anionic, cationic, or amphoteric surfactants; cationic, anionic, nonionic, or amphoteric, associative or nonassociative thickening polymers of natural or synthetic origin; silicones in the form of oils, gums, or resins; or plant-based, mineral, or synthetic non-silicone oils; UV shielding agents; fillers, such as pearlescent agents and metal oxides, such as titanium dioxide; clays; fragrances; gelatinizers; vitamins and preservatives.

[0190] Method for lightening keratin fibers According to a second aspect, the subject of the present invention is a method for lightening keratin fibers, comprising applying a composition containing the components i) to iv) as defined above to keratin fibers.

[0191] A method for simultaneously decolorizing and dyeing keratin fibers. According to a third aspect, the subject of the present invention is a method for simultaneously decolorizing and dyeing keratin fibers, comprising applying a composition comprising components i) to iv) and v) a colorant selected from direct dyes, oxidation dyes and mixtures thereof, as defined above, to keratin fibers.

[0192] Further characteristics of a method for lightening or simultaneously decolorizing and dyeing keratin fibers In particular, this composition is applicable to wet or dry keratin fibers.

[0193] Preferably, the keratin fibers are dark-colored keratin fibers.

[0194] The term "dark-colored keratin fiber" refers to keratin fiber with a color gradation of 6 or less (dark blonde), preferably 4 or less (chestnut).

[0195] This composition can be advantageously applied to keratin fibers in an amount ranging from 0.1 g to 20 g of the composition per gram of keratin fiber.

[0196] This composition is generally left on the fibers for 1 minute to 1 hour, preferably 5 minutes to 60 minutes.

[0197] For example, this composition may remain on the fibers for 50 minutes.

[0198] This composition can remain on the fibers in a sealed system. Non-limiting examples of sealed systems include wrap-type sealed systems made from aluminum foil or plastic film, or hair cap types with or without holes.

[0199] The temperature used in the brightening method is conventionally between ambient temperature (15°C to 25°C) and 80°C, preferably between ambient temperature and 60°C.

[0200] For example, the temperature used in the lightening method is 33°C.

[0201] Once processing is complete, optionally rinse the keratin fibers with water, optionally wash them with shampoo, then rinse with water, and then dry them or leave them to air dry.

[0202] The drying stage can be carried out using absorbent paper, a hair dryer, or a hood-type dryer.

[0203] The compositions used in the method according to the present invention are preferably prepared by mixing at least two compositions. Preferably, this mixing of at least two compositions is carried out immediately before applying the compositions to keratin fibers.

[0204] According to a preferred embodiment, the composition used in the method according to the present invention is • Composition (A), - One or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts, and mixtures thereof, as defined above, preferably hydrogen peroxide. Composition (A) containing; • Composition (B), - One or more compounds selected from carbonates, carbonate-generating systems, bicarbonates, bicarbonate-generating systems and mixtures thereof as defined above, preferably selected from carbonates, bicarbonates and mixtures thereof as defined above; and - One or more silicates as defined above; and - One or more colorants optionally selected from direct dyes, oxidation dyes and mixtures thereof; and - Optionally, one or more compounds selected from esters, amides, imines and mixtures thereof as defined above. Composition (B) containing; • Optionally, composition (C), - One or more colorants selected from direct dyes, oxidation dyes and mixtures thereof; and - Optionally, one or more compounds selected from esters, amides, imines and mixtures thereof as defined above. Composition (C) containing and It is understood that the mixture is obtained from the above, and if composition (B) or composition (C) is present, at least one of compositions (B) and (C) contains one or more compounds selected from esters, amides, imines and mixtures thereof as defined above.

[0205] If the method according to the present invention is a method for lightening keratin fibers, the composition used in this method is preferably the following: • Composition (A), - One or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts, and mixtures thereof, as defined above, preferably hydrogen peroxide. Composition (A) containing; • Composition (B), - One or more compounds selected from carbonates, carbonate-generating systems, bicarbonates, bicarbonate-generating systems and mixtures thereof as defined above, preferably selected from carbonates, bicarbonates and mixtures thereof as defined above; and - One or more silicates as defined above; and - One or more compounds selected from esters, amides, imines and mixtures thereof as defined above. Composition (B) containing and It is obtained from a mixture of the following.

[0206] If the method according to the present invention is a method for simultaneously decolorizing and dyeing keratin fibers, the composition used in this method is: • Composition (A), - One or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts, and mixtures thereof, as defined above, preferably hydrogen peroxide. Composition (A) containing; • Composition (B), - One or more compounds selected from carbonates, carbonate-generating systems, bicarbonates, bicarbonate-generating systems and mixtures thereof as defined above, preferably selected from carbonates, bicarbonates and mixtures thereof as defined above; - One or more silicates as defined above; and - One or more colorants optionally selected from direct dyes, oxidation dyes and mixtures thereof; and - One or more compounds selected from esters, amides, imines and mixtures thereof as defined above. Composition (B) containing and It can be obtained from a mixture of these.

[0207] If the method according to the present invention is a method for simultaneously decolorizing and dyeing keratin fibers, the composition used in this method is: Composition (A), - One or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts, and mixtures thereof, as defined above, preferably hydrogen peroxide. Composition (A) containing; Composition (B), - One or more compounds selected from carbonates, carbonate-generating systems, bicarbonates, bicarbonate-generating systems and mixtures thereof as defined above, preferably selected from carbonates, bicarbonates and mixtures thereof as defined above; and - One or more silicates as defined above; and - One or more colorants optionally selected from direct dyes, oxidation dyes and mixtures thereof; and - Optionally, one or more compounds selected from esters, amides, imines and mixtures thereof as defined above. Composition (B) containing, Composition (C), - One or more colorants selected from direct dyes, oxidation dyes and mixtures thereof; and - Optionally, one or more compounds selected from esters, amides, imines and mixtures thereof as defined above. Composition (C) containing and It can be obtained from a mixture of the above, and it is understood that at least one of compositions (B) and (C) contains one or more compounds selected from esters, amides, imines and mixtures thereof as defined above.

[0208] Preferably, if the composition according to the present invention is obtained from a mixture of compositions (A), (B), and (C) as defined above, composition (B) does not contain a colorant selected from direct dyes, oxidative dyes, and mixtures thereof.

[0209] Preferably, at least one of composition (A) or (B), or at least one of three compositions (A), (B), or (C), is aqueous. More preferably, composition (A) is aqueous.

[0210] According to a particular embodiment, composition (B) is anhydrous.

[0211] According to a particular embodiment, composition (A) is aqueous, composition (B) is anhydrous, and composition (C), if present, is aqueous.

[0212] The term "aqueous composition" means a composition comprising at least 2% by mass of water, preferably at least 5% by mass of water, more preferably at least 10% by mass of water, and even more favorably more than 20% by mass of water.

[0213] The term "anhydrous composition" means a composition containing less than 2% by mass of water, preferably less than 0.5% of water, and more preferably no water at all. Where appropriate, such small amounts of water may be introduced by components of the composition, in particular, which may contain residual amounts of water.

[0214] The compositions used in the method according to the present invention enable the lightening of keratin fibers using compositions comprising one or more persulfates, characterized by a b* value lower than, preferably 10% lower, and more preferably 15% lower than, the b* value measured at the same intensity level L*, wherein the b* and L* values ​​are measured in the CIE L*a*b* system.

[0215] Preferably, the b* value and L* value are measured according to the color evaluation method described in the examples.

[0216] use According to a fourth aspect, the subject of the present invention is the use of a composition comprising the components i) to iv) as defined above for lightening keratin fibers, preferably while simultaneously reducing the yellowness of the keratin fibers.

[0217] According to a fifth aspect, the subject of the present invention is the use of a composition comprising the components i) to iv) as defined above, and v) one or more colorants selected from direct dyes, oxidative dyes and mixtures thereof, for simultaneously decolorizing and dyeing keratin fibers.

[0218] Multi-compartment device (kit) According to a sixth aspect, the subject of the present invention is a device (kit) having a plurality of separate compartments, which is, • Composition (A), - One or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide generating systems other than peroxide salts, and mixtures thereof, as defined above, preferably hydrogen peroxide. A first compartment containing composition (A) including; • Composition (B), - One or more compounds selected from carbonates, carbonate-generating systems, bicarbonates, bicarbonate-generating systems and mixtures thereof as defined above, preferably one or more compounds selected from carbonates, bicarbonates and mixtures thereof as defined above; and - One or more silicates as defined above; and - One or more colorants optionally selected from direct dyes, oxidation dyes and mixtures thereof; and - Optionally, one or more compounds selected from esters, amides, imines and mixtures thereof as defined above. A second compartment containing composition (B) including; • Optionally, composition (C), - One or more colorants selected from direct dyes, oxidation dyes and mixtures thereof; and - Optionally, one or more compounds selected from esters, amides, imines and mixtures thereof as defined above. A third compartment containing composition (C) and It is understood that, if composition (B) or composition (C) exists, at least one of compositions (B) and (C) contains one or more compounds selected from esters, amides, imines and mixtures thereof as defined above. [Examples]

[0219] The following examples will allow for a clearer understanding of the present invention, but they do not limit the properties of the invention. In the following examples, unless otherwise specified, all quantities are expressed as mass percentages of the total mass of the composition.

[0220] Methods for evaluating color In these examples, the color of hair strands was evaluated using a Minolta CM3610A Spectrophotometer (illuminant D65) in the CIE L*a*b* system. In this L*a*b* system, L* represents the intensity of the color, a* indicates the hue along the green / red axis, and b* indicates the hue along the blue / yellow axis. The higher the L* value, the brighter the color. The higher the a* value, the stronger the redness of the color, and the higher the b* value, the stronger the yellowness of the color.

[0221] Example 1 (Comparison) The following compositions C1 to C12 were prepared and then applied according to the application protocol described below.

[0222] [Table 1]

[0223] [Table 2]

[0224] Application Protocol Apply 10g of each composition C1-C12 to 12 bundles of 1g of Caucasian HT4 hair on a hot plate maintained at 33°C. Cover the entire area with cellophane film for 50 minutes.

[0225] Next, rinse the hair strands, wash them with a standard shampoo, rinse again, and then dry them.

[0226] colorimetric measurement The results of the colorimetric measurements are summarized in the table below.

[0227] [Table 3]

[0228] The results show that while the comparative composition containing persulfate is able to obtain a good level of lightness characterized by a relatively high L* value, the resulting hue has a prominent yellow component characterized by a high b* value.

[0229] Example 2 The following compositions C13 to C35 were prepared and then applied according to the application protocol described below.

[0230] [Table 4]

[0231] [Table 5]

[0232] [Table 6]

[0233] [Table 7]

[0234] [Table 8]

[0235] Application Protocol Apply 10g of each composition C13-C35 to 23 bundles of 1g of Caucasian HT4 hair on a hot plate maintained at 33°C. Cover the entire area with cellophane film for 50 minutes.

[0236] Next, rinse the hair strands, wash them with a standard shampoo, rinse again, and then dry them.

[0237] colorimetric measurement The results of the colorimetric measurements are summarized in the table below.

[0238] [Table 9]

[0239] The results indicate that the composition according to the present invention can achieve a good level of lightening, characterized by a relatively high L* value. Furthermore, the resulting hue is characterized by a lower b* value for the composition according to the present invention, at a comparable intensity L* level, compared to the comparative composition based on persulfate in Example 1, as shown in Figure 1.

[0240] Example 3 Compositions D1 and D2 were prepared and then applied according to the application protocol described below.

[0241] [Table 10]

[0242] Application Protocol Apply 10g of each composition D1-D2 to two 1g bundles of dark Caucasian HT4 hair on a hot plate maintained at 33°C. Leave the entire mixture in open air for 50 minutes.

[0243] Next, rinse the hair strands, wash them with a standard shampoo, rinse again, and then dry them.

[0244] result

[0245] [Table 11]

[0246] The composition according to the present invention makes it possible to decolorize and dye dark hair simultaneously in a single step, and to obtain a vivid color.

[0247] Example 4 Compositions E1 and E2 were prepared and then applied according to the application protocol described below.

[0248] [Table 12]

[0249] Application Protocol Apply 10g each of compositions E1 and E2 to two 1g bundles of dark Caucasian HT4 hair on a hot plate maintained at 33°C. Leave the entire mixture in open air for 50 minutes.

[0250] Next, rinse the hair strands, wash them with a standard shampoo, rinse again, and then dry them.

[0251] result:

[0252] [Table 13]

[0253] The composition according to the present invention makes it possible to decolorize and dye dark hair simultaneously in a single step, and to obtain a vivid color.

Claims

1. i) One or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide salts, hydrogen peroxide generating systems and mixtures thereof; ii) A compound selected from bicarbonates, wherein the bicarbonate is ammonium bicarbonate; iii) One or more silicates; iv) One or more compounds selected from esters and mixtures thereof A composition comprising, - The silicate is present in the composition in a total content ranging from 1% by mass to 40% by mass relative to the total mass of the composition; and - The composition comprises persulfate in a total content of less than 5% by mass relative to the total mass of the composition.

2. The composition according to claim 1, wherein the chemical oxidizing agent is hydrogen peroxide.

3. The composition according to claim 1, wherein the chemical oxidizing agent is present in the composition in a total content of 1% to 12% by mass, preferably 3% to 9% by mass, and more preferably 3.5% to 8.5% by mass, based on the total mass of the composition.

4. The composition according to claim 1, wherein compound ii) is present in the composition in a total content of 0.01% to 20% by mass, preferably 1% to 15% by mass, more preferably 2% to 15% by mass, and even more preferably 4% to 15% by mass, based on the total mass of the composition.

5. The composition according to claim 1, wherein the silicate is selected from alkali metal silicates, alkaline earth metal silicates, aluminum silicate, 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, and even more preferably from compounds having the INCI name sodium silicate and / or sodium metasilicate.

6. The composition according to claim 1, wherein the silicate is present in the composition in a total content of 1% to 40% by mass, preferably 2% to 35% by mass, more preferably 3% to 35% by mass, and even more preferably 4% to 20% by mass, based on the total mass of the composition.

7. The composition according to claim 1, wherein the mass ratio of the total amount of bicarbonate to the total amount of silicate is 0.00025 to 20, preferably 0.02 to 7.5, and more preferably 0.05 to 5.

8. The composition according to claim 1, wherein the mass ratio of the total amount of bicarbonate to 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.

9. The aforementioned compound iv) is given by the following formula (I): 【Chemistry 1】 (In equation (I), A represents a saturated or unsaturated linear or branched hydrocarbon group containing 1 to 30 carbon atoms, optionally interrupted by one or more non-adjacent oxygen atoms and / or optionally substituted by one or more identical or different groups selected from -CO-, -OCO-, -COO-, and / or optionally substituted by one or more identical or different groups selected from a (heterocyclic) group optionally substituted by a hydroxyl group (-OH), a group -COOAk1, or one or more hydroxyl groups (-OH); ・X １ This independently represents an oxygen atom; ・X ２ represents an oxygen atom; p = 0 or 1; B is, - A (heterocyclic) group optionally substituted with one or more identical or different groups selected from hydroxyl(-OH), -OR'', -COOA', -OCOA', or (poly)(hydroxy)alkyl; - Base - OR'; - group -COOA'; - group -OCOA' Represents a saturated or unsaturated linear, branched, or cyclic hydrocarbon group containing 1 to 30 carbon atoms, optionally substituted by one or more identical or different groups selected from; and / or optionally interrupted by one or more non-adjacent oxygen atoms and / or by one or more identical or different groups selected from -OCO-, -COO-; A' represents a saturated or unsaturated linear or branched hydrocarbon group containing 1 to 30 carbon atoms, optionally interrupted by one or more non-adjacent oxygen atoms and / or optionally substituted by one or more identical or different groups selected from -CO-, -OCO-, -COO-, and / or optionally substituted by one or more identical or different groups selected from hydroxyl(-OH), -COOAk1; R is a hydrogen atom or an alkyl group, especially (C １ ~C ４ ) Represents an alkyl group; R' represents an alkyl group that is optionally substituted with one or more identical or different groups selected from a hydrogen atom, hydroxyl (-OH), or -OCOA'; R'' is, - Alkyl groups optionally substituted with one or more hydroxyl groups (-OH); or - A (heterocyclic) group optionally substituted with one or more identical or different groups selected from hydroxyl (-OH) and (poly)(hydroxy)alkyl groups. It represents; Ak1 represents an alkyl group that is optionally substituted by -COOAk2; Ak2 represents an alkyl group; R and B can form heterocycles together with the nitrogen atom containing them; A and B, in particular, - A (heterocyclic) group that is optionally substituted with one or more identical or different groups selected from hydroxyl(-OH) and (poly)(hydroxy)alkyl groups; - Hydroxyl group (-OH); - Base - OR''; - (Poly)(hydroxy)alkyl group It is possible to form a heterocycle together which is optionally substituted by one or more identical or different groups selected from; X １ (If represents the group -NR-, then it is understood that A and B may represent hydrogen atoms.) From the compounds, salts thereof, optical isomers thereof, geometric isomers thereof, tautomers thereof, solvates thereof and mixtures thereof, preferably the following compounds: 【Chemistry 2-1】 【Chemistry 2-2】 [Chemistry 2-3] [Chemistry 2-4] 【Chemistry 2-5】 【Chemistry 2-6】 【Chemistry 2-7】 【Chemistry 2-8】 【Chemistry 2-9】 【Chemistry 2-10】 【Chemistry 2-11】 【Chemistry 2-12】 【Chemistry 2-13】 【Chemistry 2-14】 The composition according to claim 1, selected from the salts thereof, its optical isomers, its geometric isomers, its tautomers, its solvates and mixtures thereof, more preferably from compounds 1-48 and 50-63, its salts, its optical isomers, its geometric isomers, its tautomers, its solvates and mixtures thereof; even more preferably from compounds 1, 4, 5, 6, 12, 15, 16, 22, 24, 26, 27, 31, 33, 37, 41, 53, 54, 55, 58, 60, 62 and 63, its salts, its optical isomers, its geometric isomers, its tautomers, its solvates and mixtures thereof.

10. The composition according to claim 1, wherein compound iv) is present in the composition in a total content of 0.01% to 50% by mass, preferably 1% to 30% by mass, and more preferably 2% to 15% by mass, based on the total mass of the composition.

11. The composition according to claim 1, comprising a total content of less than 5% by mass, preferably less than 1% by mass, more preferably less than 0.1% by mass, even more preferably less than 0.01% by mass, and most preferably less than 0.001% by mass, and even more preferably not comprising magnesium carbonate.

12. The composition according to claim 1, comprising a total content of less than 1% by mass, preferably less than 0.1% by mass, more preferably less than 0.01% by mass, and even more preferably less than 0.001% by mass of persulfate, and most preferably not comprising persulfate.

13. The composition according to claim 1, wherein the pH of the composition varies between 8 and 11, preferably between 8 and 10.5, more preferably between 8 and 10, and even more preferably between 8.3 and 10.

14. The composition according to claim 1, comprising one or more colorants selected from direct dyes, oxidation dyes, and mixtures thereof.

15. The composition according to claim 1, comprising a total content of a coloring agent in less than 0.1% by mass, preferably less than 0.01% by mass, and more preferably less than 0.001% by mass, relative to the total mass of the composition, and more preferably without a coloring agent.

16. A method for lightening keratin fibers, comprising applying the composition described in claim 1 to the keratin fibers.

17. The method according to claim 16, wherein the composition enables the lightening of keratin fibers characterized by a b* value lower than, preferably 10% lower, more preferably 15% lower than, a b* value measured at the same intensity level L*, on keratin fibers lightened using a composition comprising one or more persulfates, the b* value and L* value being measured in the CIE L*a*b* system.

18. A method for simultaneously decolorizing and dyeing keratin fibers, comprising applying the composition described in claim 14 to the keratin fibers.

19. A method for lightening keratin fibers, comprising applying the composition described in claim 1 to keratin fibers, The composition according to claim 1 is - Composition (A), - One or more chemical oxidizing agents selected from hydrogen peroxide, hydrogen peroxide generating systems other than hydrogen peroxide salts, and mixtures thereof, as defined in claim 1. Composition (A) containing; • Composition (B), - Compounds selected from bicarbonates as defined in claim 1; and - One or more silicates as defined in claim 1; and - One or more colorants optionally selected from direct dyes, oxidation dyes and mixtures thereof; and - Optionally, one or more compounds selected from the esters and mixtures thereof as defined in claim 1. Composition (B) including; - Optionally, composition (C), - One or more colorants selected from direct dyes, oxidation dyes and mixtures thereof; and - Optionally, one or more compounds selected from the esters and mixtures thereof as defined in claim 1. Composition (C) containing and Obtained from a mixture of; A method wherein, if composition (B) or composition (C) is present, at least one of compositions (B) and (C) is understood to contain one or more compounds selected from esters and mixtures thereof as defined in claim 1.

20. Use of the composition according to any one of claims 1 to 13 or 15 for lightening keratin fibers, preferably while simultaneously reducing the yellowness of the keratin fibers.

21. Use of the composition according to claim 14 for simultaneously decolorizing and dyeing keratin fibers.

22. - A first compartment containing composition (A) as defined in claim 19; - A second compartment for containing composition (B) as defined in claim 19; - Optionally, a third compartment containing composition (C) as defined in claim 19 and A multicompartment device comprising, where if composition (B) or composition (C) is present, at least one of compositions (B) and (C) is understood to contain one or more compounds selected from esters and mixtures thereof as defined in claim 1 or 9.

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