Composition comprising a peroxygenated salt, a fat in a particular proportion, an amino acid compound and a (poly)carboxylic acid.

Abstract

The invention relates to a composition for lightening keratin fibers, and in particular human keratin fibers such as hair, comprising one or more peroxygenated salts, one or more fats in a content greater than 10% by weight, one or more amino acid compounds, and one or more carboxylic acids different from the amino acid compounds, the composition being free of hydrogen peroxide. The invention also relates to a method for lightening keratin fibers, preferably human, particularly hair, comprising applying the composition to said keratin fibers.

Description

Title of the invention: Composition comprising a peroxygenated salt, a fat in a particular content, an amino acid type compound and a (poly)carboxylic acid.

[0001] The present invention relates to a composition for lightening keratin fibers, and in particular human keratin fibers such as hair, comprising one or more peroxygenated salts, one or more fatty substances in a particular content, one or more amino acid type compound(s) and one or more (poly)carboxylic acids different from the amino acid type compound(s).

[0002] The invention also relates to the process of lightening human keratin fibers using such a composition.

[0003] In the field of hair lightening, tone level is generally used to characterize the degree or level of lightening. The concept of "tone" is based on the classification of natural shades, with one tone separating each shade from the one immediately preceding or following it. This definition and the classification of natural shades are well known to hairdressing professionals and are published in the book "Sciences des traitements cheveux" by Charles ZVIAK, 1988, Ed. Masson, pp. 215 and 278.

[0004] The tone heights range from 1 (black) to 10 (light blonde), one unit corresponding to one tone; the higher the number, the lighter the shade.

[0005] Lightening thus makes it possible to bring a tone height lighter than the initial natural tone height of the hair.

[0006] The processes used to lighten hair generally consist of using an aqueous composition comprising at least one oxidizing agent, under alkaline pH conditions in the vast majority of cases.

[0007] This oxidizing agent's role is to degrade the melanin in the hair, which, depending on the nature of the oxidizing agent present, leads to a more or less pronounced lightening of the hair fibers. Thus, for relatively slight lightening, the oxidizing agent is generally hydrogen peroxide. When greater lightening is desired, particularly lightening of at least 5 shades, peroxygenated salts, such as persulfates, are usually used in the presence of hydrogen peroxide. These peroxygenated salts are contained in compositions which, at the time of use, are mixed with an aqueous composition containing hydrogen peroxide.

[0008] In order to adjust the pH of the compositions to an alkaline pH to allow the activation of the oxidizing agent, an alkaline agent is used. This alkaline agent also causes a swelling of the keratin fiber, with an opening of the scales, which promotes the penetration of the oxidizing agent inside the fiber, and thus increases the efficiency of the reaction.

[0009] However, the use of alkaline agents and peroxygenated salts is not without consequences and can lead to a deterioration in hair quality. The main causes of this deterioration are a decrease in cosmetic properties, such as shine, and a degradation of mechanical properties, particularly a reduction in mechanical resistance, which can also result in increased porosity. The hair is weakened and can become brittle during subsequent treatments such as blow-drying. An increase in frizz, which is unsightly, is also observed.

[0010] Lightening dark hair is therefore particularly delicate because it requires the use of a large amount of peroxygenated salts if one wishes to lighten them strongly, which can weaken them.

[0011] In addition, lightening compositions applied to very curly hair tend to alter the shape of the curls, which generally have a less defined appearance.

[0012] Furthermore, compositions containing peroxygenated salts are generally in powder form. However, since powdered compositions have the disadvantage of producing dust during handling, transport, and storage, paste-like compositions have been proposed. The powdered compounds are thus dispersed in a thickened, inert, organic liquid support, which provides a solution to the volatility problems.

[0013] On the other hand, the implementation of compositions in paste form causes new difficulties.

[0014] These pastes are generally anhydrous and have a compact, hard texture. Consequently, mixing the paste with the hydrogen peroxide composition is far from easy. This results not only in a longer mixing time but also in difficulties in obtaining a homogeneous and stable mixture.

[0015] Furthermore, the lightening compositions obtained may be difficult to distribute evenly over the entire head of hair, particularly curly or frizzy hair, which may lead to undesirable uneven lightening performance.

[0016] Thus, one of the objectives of the present invention is to propose lightening compositions for keratinous materials, preferably human keratinous fibers such as hair, which do not present the disadvantages mentioned above, that is to say, which are capable of producing very good lightening performance without altering the cosmetic properties of the hair, while having very good qualities of use, especially in respecting the nature of the hair.

[0017] This objective and others are achieved by the present invention, which therefore relates to a composition comprising: - one or more peroxygenated salts; - one or more fats in a total content exceeding 10% by weight relative to the total weight of the composition; - one or more amino acid-type compounds; and - one or more (poly)carboxylic acids and / or their salts, different from amino acid type compound(s); - the composition being free of hydrogen peroxide.

[0018] According to a preferred embodiment, the composition according to the invention is a keratin fiber lightening composition, preferably human, preferably hair.

[0019] The invention also relates to a lightening process implementing said composition, the use of the composition for lightening keratin fibers, and in particular hair, as well as a multi-compartment device suitable for implementing said lightening composition.

[0020] The composition according to the invention leads to a significant level of lightening, up to 9 shades, without major alteration of the cosmetic properties of the hair, with improved qualities of use.

[0021] In particular, the composition according to the invention mixes quickly and easily with an aqueous hydrogen peroxide composition to obtain a homogeneous and stable mixture. The resulting mixture is easily applied to the hair. Its smooth, creamy consistency helps prevent dripping during application while spreading easily throughout the hair, even in very curly hair. Furthermore, the mixture does not dry out during the application time, thus ensuring optimal availability of the active ingredients throughout the application period. In addition, the mixture rinses out easily.

[0022] The cosmetic properties of hair treated with the composition according to the invention do not show any major alteration, particularly in terms of softness and detangling. The composition specifically conditions the hair and reduces breakage during detangling, especially in very curly hair. When applied to very curly hair, it also helps maintain curl shape by providing good definition. The composition also provides good frizz control.

[0023] Other objects, features, aspects and advantages of the invention will become even clearer upon reading the description and examples that follow.

[0024] In what follows, and unless otherwise indicated, the bounds of a domain of values ​​are included in this area, particularly in the expressions "between" and "ranging from ... to ...".

[0025] Furthermore, the expression "at least one" used in this description is equivalent to the expression "one or more". Peroxygenated salts

[0026] The composition according to the invention comprises one or more peroxygenated salts.

[0027] Preferably, the peroxygenated salts are chosen from among persulfates; perborates; peracids and / or their salts; alkali metal, alkali-earth metal, or ammonium percarbonates; magnesium peroxide; and mixtures thereof.

[0028] More preferably, the composition according to the present invention comprises at least one persulfate.

[0029] Persulfates, also called peroxysulfates, correspond, in the sense of the invention, to the anions SO52 (peroxomonosulfate anion) or S2O82 (peroxodisulfate anion) or to compounds comprising at least one of these anions.

[0030] Preferably, the persulfates according to the invention are chosen from among the peroxodi-sulfates.

[0031] According to a preferred embodiment of the invention, the composition according to the invention comprises at least one peroxygenated salt selected from the persulfates; preferably from alkali metal persulfates, alkaline earth metal persulfates, ammonium persulfates, and mixtures thereof; more preferably from (bis)tetrabutylammonium persulfate, barium persulfate, magnesium persulfate, calcium persulfate, sodium persulfate, potassium persulfate, ammonium persulfate, and mixtures thereof; more preferably still from sodium persulfate, potassium persulfate, ammonium persulfate, and mixtures thereof; even better from potassium persulfate, ammonium persulfate, and mixtures thereof.

[0032] Preferably, the total content of peroxygenated salt(s) present in the composition according to the invention ranges from 1 to 60% by weight, more preferably from 5 to 55% by weight, more preferably still from 10 to 50% by weight, and even better from 20 to 45%, or even from 30 to 40% by weight, relative to the total weight of the composition.

[0033] Preferably, the total content of persulfate(s) present in the composition according to the invention ranges from 1 to 60% by weight, more preferably from 5 to 55% by weight, more preferably from 10 to 50% by weight, even better from 20 to 45%, or even from 30 to 40% by weight, relative to the total weight of the composition. Fatty body

[0034] As previously stated, the composition according to the invention comprises one or more fatty substances.

[0035] The term "fatty substance" refers to an organic compound insoluble in water at 25°C and atmospheric pressure (1.013 x 10⁵ Pa) (solubility less than 5% by weight, and preferably less than 1% by weight, even more preferably less than 0.1% by weight). Its structure includes at least one hydrocarbon chain comprising at least 6 carbon atoms and / or a chain of at least two siloxane groups. Furthermore, fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, such as chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran (THF), petrolatum, or decamethylcyclopentasiloxane.

[0036] Advantageously, the fats usable in the present invention are neither (poly)oxyalkylated nor (poly)glycerolated.

[0037] Preferably the useful fatty substances according to the invention are non-siliconized.

[0038] The term "non-siliconized fat" means a fat that does not contain Si-O bonds and the term "siliconized fat" means a fat that contains at least one Si-O bond.

[0039] The fats used according to the invention may be liquid fats (or oils) and / or solid fats. Liquid fats are defined as fats having a melting point of 25°C or lower at atmospheric pressure (1.013 x 10⁵ Pa). Solid fats are defined as fats having a melting point above 25°C at atmospheric pressure (1.013 x 10⁵ Pa).

[0040] For the purposes of the present invention, the melting point corresponds to the temperature of the most endothermic peak observed in thermal analysis (differential scanning calorimetry or DSC) as described in ISO 11357-3; 1999. The melting point can be measured using a differential scanning calorimeter (DSC), for example, the calorimeter sold under the name "MDSC 2920" by TA Instruments. In the present application, all melting points are determined at atmospheric pressure (1.013 x 10⁵ Pa).

[0041] More particularly, the liquid fat(s) according to the invention are chosen from liquid hydrocarbons in C6 to C16, liquid hydrocarbons comprising more than 16 carbon atoms, non-siliconized oils of animal origin, triglyceride type oils of vegetable or synthetic origin, fluorinated oils, liquid fatty alcohols, liquid esters of fatty acids and / or fatty alcohols other than triglycerides, silicone oils, and mixtures thereof.

[0042] It is recalled that alcohols, esters, and fatty acids more particularly have at least one hydrocarbon group, linear or branched, saturated or unsaturated, comprising from 6 to 40, preferably from 8 to 30, carbon atoms, possibly substituted, in particular by one or more hydroxyl groups (in particular 1 to 4). If they are unsaturated, these compounds may comprise one to three carbon-2 double bonds. carbon, conjugated or not.

[0043] As regards liquid hydrocarbons in the C6 to Cl6 range, these can be linear, branched, possibly cyclic, and are preferably chosen from among the alkanes. By way of example, hexane, cyclohexane, undecane, dodecane, isododecane, tridecane, isoparaffins such as isohexadecane, isodecane, and mixtures thereof may be cited.

[0044] Liquid hydrocarbons comprising more than 16 carbon atoms may be linear or branched, of mineral or synthetic origin, and are preferably chosen from paraffin or petroleum jelly oils (INCI name ore oil or paraffinum liquidum), polydecenes, hydrogenated polyisobutene such as Parleam®, and mixtures thereof.

[0045] Perhydrosqualene can be cited as an example of hydrocarbon oils of animal origin.

[0046] Triglyceride oils of vegetable or synthetic origin are preferably chosen from among the liquid triglycerides of fatty acids comprising 6 to 30 carbon atoms such as the triglycerides of heptanoic or octanoic acid or, for example, sunflower, corn, soybean, pumpkin, grapeseed, sesame, hazelnut, apricot, macadamia, arara, sunflower, castor, avocado oils, caprylic / capric acid triglycerides such as those sold by Stea-rineries Dubois or those sold under the names Miglyol® 810, 812 and 818 by Dynamit Nobel, jojoba oil, shea butter oil, and mixtures thereof.

[0047] As regards fluorinated oils, these can be chosen from per-fluoromethylcyclopentane and perfluoro-1,3-dimethylcyclohexane, sold under the names "FLUTEC® PCI" and "FLUTEC® PC3" by BNFL Fluorochemicals; perfluoro-1,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the names "PF 5050®" and "PF 5060®" by 3M, or bromoperfluorooctyl sold under the name "FORALKYL®" by Atochem; no-nafluoromethoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as 4-trifluoromethyl perfluoromorpholine sold under the name "PF 5052®" by 3M.

[0048] Liquid fatty alcohols suitable for implementing the invention are particularly chosen from saturated or unsaturated, linear or branched alcohols, preferably unsaturated or branched, comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms. Examples include octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, isostearyl alcohol, oleic alcohol, linolenic alcohol, ricinoleic alcohol, undecylenic alcohol or linoleic alcohol, and mixtures thereof.

[0049] With regard to liquid esters of fatty acids and / or fatty alcohols, other than the triglycerides mentioned above, we may mention in particular the esters of saturated or unsaturated mono- or poly-aliphatic acids, linear in Cl to C26 or branched in C3 to C26 and of saturated or unsaturated mono- or poly-aliphatic alcohols, linear in Cl to C26 or branched in C3 to C26, the total number of carbons of the esters being greater than or equal to 6, more advantageously greater than or equal to 10.

[0050] Preferably, for monoalcohol esters, at least one of the alcohol or acid from which the esters of the invention are derived is branched.

[0051] Among the monoesters, the following may be mentioned: dihydroabietyl behenate; octyldodecyl behenate; isocetyl behenate; isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; isostearyl octanoate; isocetyl octanoate; octyl octanoate; decyl oleate; isocetyl isostearate; isocetyl laurate; isocetyl stearate; isodecyl octanoate; isodecyl oleate; isononyl isononanoate; isostearyl palmitate; methyl acetyl ricinoleate; octyl isononanoate; 2-ethylhexyl isononate; octyldodecyl erucate; oleyl erucate; ethyl and isopropyl palmitates, such as ethyl-2-hexyl palmitate, 2-octyldecyl palmitate; alkyl myristates such as isopropyl myristate; isobutyl stearate; 2-hexyldecyl laurate, and mixtures thereof.

[0052] Preferably among monoesters of monoacids and monoalcohols, ethyl and isopropyl palmitates, alkyl myristates such as isopropyl or ethyl myristate, isocetyl stearate, ethyl-2-hexyl isononanoate, isodecyl neopentanoate, isostearyl neopentanoate, and mixtures thereof will be used.

[0053] Still within the framework of this variant, esters of di- or tricarboxylic acids in C4 to C22 and of alcohols in Cl to C22 and esters of mono-, di-, or tricarboxylic acids and di-, tri-, tetra- or pentahydroxy alcohols in C2 to C26 can also be used.

[0054] Examples include: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; din-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyldodecyl stearoyl stearate; pentaerythrityl monoricinoleate; pentaerythrityl tetraisononanoate; pentaerythrityl tetrapelargonate; pentaerythrityl tetraisostearate; pentaerythrityl tetraoctanoate; propylene glycol dicaprylate; propylene glycol dicaprate; tridecyl erucate; triisopropyl citrate; triisotearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; propylene glycol dioctanoate; neopentyl glycol diheptanoate; diethylene glycol diisanonate; polyethylene glycol distearates, and mixtures thereof.

[0055] The composition may also include, as a fatty acid ester, esters and diesters of sugars of fatty acids in the C6 to C30 range, preferably in the C12 to C22 range. It should be noted that the term "sugar" refers to oxygenated hydrocarbon compounds possessing several alcohol functional groups, with or without aldehyde or ketone functional groups, and comprising at least four carbon atoms. These sugars may be monosaccharides, oligosaccharides, or polysaccharides.

[0056] Suitable sugars may be cited for example sucrose (or saccharose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose, and their derivatives in particular alkylated, such as methylated derivatives like methylglucose.

[0057] Sugar and fatty acid esters may be selected in particular from the group comprising the esters or mixtures of sugar esters described above and fatty acids in the ranges of C6 to C30, preferably C12 to C22, linear or branched, saturated or unsaturated. If unsaturated, these compounds may comprise one to three carbon-carbon double bonds, conjugated or not.

[0058] The esters according to this variant can also be chosen from mono-, di-, tri- and tetra-esters, polyesters and their mixtures.

[0059] These esters may be, for example, oleate, laurate, palmitate, myristate, behenate, cocoate, stearate, linoleate, linolenate, caprate, arachidonate, or mixtures thereof, such as mixed oleo-palmitate, oleo-stearate, palmito-stearate esters.

[0060] More particularly, mono- and di- esters are used, and in particular mono- or di- oleate, stearate, behenate, oleopalmitate, linoleate, linolenate, oleostearate, of sucrose, glucose or methylglucose, and mixtures thereof.

[0061] An example is the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

[0062] Preferably, a liquid ester of monoacid and monoalcohol will be used.

[0063] The silicone oils usable in the composition according to the present invention may be volatile or non-volatile, cyclic, linear or branched, modified or not by organic groups, and preferably have a viscosity of 5.10-6 at 2.5 m2 / s at 25°C, and preferably 1.10-5 at 1 m2 / s.

[0064] Preferably, silicone oils are chosen from polydialkylsiloxanes, in particular polydimethylsiloxanes (PDMS), and liquid polyorganosiloxanes comprising at least one aryl group.

[0065] These silicone oils can also be organomodified. The organomodified silicone oils usable according to the invention are preferably liquid silicones as defined above and comprising in their structure one or more organofunctional groups attached via a hy group drocarbon, for example chosen from among the amine groups and the alkoxy groups.

[0066] Organopolysiloxanes are defined in more detail in Walter Noll's "Chemistry and Technology of Silicones" (1968), Academy Press. They can be volatile or non-volatile.

[0067] When volatile, silicone oils are particularly chosen from those having a boiling point between 60°C and 260°C, and even more particularly from:

[0068] (i) cyclic polydialkylsiloxanes comprising 3 to 7, preferably 4 to 5 silicon atoms. These include, for example, octamethylcyclotetrasiloxane marketed under the name VOLATILE SILICONE® 7207 by UNION CARBIDE or SILBIONE® 70045 V2 by RHODIA, decamethylcyclopentasiloxane marketed under the name VOLATILE SILICONE® 7158 by UNION CARBIDE, and SILBIONE® 70045 V5 by RHODIA, as well as their mixtures.

[0069] We can also mention cyclocopolymers of the dimethylsiloxane / methylal-kylsiloxane type, such as SILICONE VOLATILE® FZ 3109 marketed by the company UNION CARBIDE.

[0070] We can also mention mixtures of cyclic polydialkylsiloxanes with silicon-derived organic compounds, such as the mixture of octamethylcyclotetrasiloxane and tetratrimethylsilylpentaerythritol (50 / 50) and the mixture of octamethylcyclotetrasiloxane and oxy-l,l'-(hexa-2,2,2',2',3,3'-trimethylsilyloxy) bis-neopentane;

[0071] (ii) linear volatile polydialkylsiloxanes having 2 to 9 silicon atoms and exhibiting a viscosity less than or equal to 5 x 10⁻⁶ m² / s at 25°C. This includes, for example, decamethyltetrasiloxane, marketed notably under the name "SH 200" by TORAY SILICONE. Silicones falling into this class are also described in the article published in Cosmetics and Toiletries, Vol. 91, Jan. 1976, pp. 27-32 - TODD & BYERS "Volatile Silicone fluids for cosmetics".

[0072] Non-volatile polydialkylsiloxanes are preferably used.

[0073] These silicone oils are more specifically chosen from among the polydialkylsiloxanes, among which the main examples are polydimethylsiloxanes with trimethylsilyl terminal groups. The viscosity of the silicones is measured at 25°C according to ASTM 445 Appendix C.

[0074] Among these polydialkylsiloxanes, the following commercial products may be cited by way of non-limiting example:

[0075] - SILBIONE® oils of series 47 and 70 047 or MIRASIL® commercial oils specialized by RHODIA such as, for example, oil 70 047 V 500 000;

[0076] - the oils of the MIRASIL® series marketed by the company RHODIA;

[0077] - oils from the 200 series of DOW CORNING such as DC200 having a viscosity of 60,000 mm2 / s;

[0078] - VISCASIL® oils from GENERAL ELECTRIC and certain oils from the SF series (SF 96, SF 18) from GENERAL ELECTRIC.

[0079] We can also mention polydimethylsiloxanes with terminal dimethylsilanol groups known as dimethiconol (CTFA), such as the oils in the 48 series from the RHODIA company.

[0080] Organomodified silicones usable according to the invention are silicones as defined above and comprising in their structure one or more organofunctional groups fixed by means of a hydrocarbon group.

[0081] With regard to liquid polyorganosiloxanes comprising at least one aryl group, they may in particular be polydiphenylsiloxanes, and polyalkyl-arylsiloxanes functionalized by the organofunctional groups mentioned above.

[0082] Polyalkylarylsiloxanes are particularly chosen from among polydimethyl / methylphenylsiloxanes, linear and / or branched polydimethyl / diphenylsiloxanes with a viscosity ranging from 1.10-5 to 5.10-2 m2 / s at 25°C.

[0083] Examples of these polyalkylarylsiloxanes include products marketed under the following names:

[0084] - SILBIONE® oils from the 70 641 series of RHODIA;

[0085] - the oils of the RHODORSIL® 70 633 and 763 series from RHODIA;

[0086] - DOW CORNING 556 COSMETIC GRAD FLUID oil from DOW CORNING;

[0087] - silicones from the PK series of BAYER such as product PK20;

[0088] - silicones from the PN, PH series of BAYER such as the PN1000 and PH1000 products

[0089] - certain oils from the SF series of GENERAL ELECTRIC such as SF 1023, SF 1154, SF 1250, SF 1265.

[0090] Among organomodified silicones, we can mention polyorganosiloxanes comprising:

[0091] - substituted or unsubstituted amino groups such as products marketed under the designations GP 4 Silicone Fluid and GP 7100 by the company GENESEE or the products marketed under the designations Q2 8220 and DOW CORNING 929 or 939 by the company DOW CORNING. The substituted amino groups are in particular aminoalkyl groups in Cl to C4;

[0092] - alkoxylated groups,

[0093] - hydroxyl groups.

[0094] The solid fats according to the invention preferably have a viscosity sufficient for greater than 2 Pa.s, measured at 25°C and at a shear rate of 1 s-1.

[0095] The solid fat(s) are preferably chosen from solid fatty acids, solid fatty alcohols, solid esters of fatty acids and / or fatty alcohols, waxes, ceramides, and mixtures thereof.

[0096] By "fatty acids," we mean a long-chain carboxylic acid comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms. The solid fatty acids according to the invention preferably comprise from 10 to 30 carbon atoms and more preferably from 14 to 22 carbon atoms. They may optionally be hydroxylated. These fatty acids are neither oxyalkylated nor glycerolized.

[0097] The solid fatty acids usable in the present invention are in particular selected from myristic acid, cetyl acid, stearylic acid, palmitic acid, arachidic acid, stearic acid, lauric acid, behenic acid, 12-hydroxystearic acid and mixtures thereof.

[0098] In a particularly preferred manner, the solid fatty acid(s) are chosen from stearic acid, myristic acid and palmitic acid.

[0099] By "fatty alcohol" is meant a long-chain aliphatic alcohol comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms, and comprising at least one hydroxyl group OH. These fatty alcohols are neither oxyalkylated nor glycerolated.

[0100] Solid fatty alcohols can be saturated or unsaturated, linear or branched, and comprise from 8 to 40 carbon atoms, preferably from 10 to 30 carbon atoms. Preferably, solid fatty alcohols have the structure R-OH with R denoting a linear alkyl group, optionally substituted by one or more hydroxyl groups, comprising from 8 to 40, preferably from 10 to 30 carbon atoms, better from 10 to 30, or even from 12 to 24 atoms, even better from 14 to 22 carbon atoms.

[0101] The solid fatty alcohols that can be used are preferably chosen from saturated or unsaturated, linear or branched (mono)alcohols, preferably linear and saturated, comprising 8 to 40 carbon atoms, better 10 to 30, or even 12 to 24 atoms, even better 14 to 22 carbon atoms.

[0102] The solid fatty alcohols that may be used may be selected from, alone or in mixture: myristic or myristyl alcohol (or 1-tetradecanol); cetyl alcohol (or 1-hexadecanol); stearyl alcohol (or 1-octadecanol); arachidyl alcohol (or 1-eicosanol); behenyl alcohol (or 1-docosanol); lignoceryl alcohol (or 1-tetracosanol); ceryl alcohol (or 1-hexacosanol); montanylic alcohol (or 1-octacosanol); myricyl alcohol (or 1-triacontanol).

[0103] Preferably, the solid fatty alcohol is chosen from cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, arachidic alcohol and mixtures thereof, such as cetostearyl or cetearyl alcohol. In particular The preferred solid fatty alcohol is chosen from cetostearyl or cetearyl alcohol and cetyl alcohol.

[0104] The solid fatty acid and / or fatty alcohol esters that may be used are preferably selected from esters derived from C9-C26 carboxylic fatty acids and / or C9-C26 fatty alcohols.

[0105] Preferably, these solid fatty acid esters are esters of saturated linear or branched carboxylic acids comprising at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms, and of saturated linear or branched monoalcohols comprising at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms. The saturated carboxylic acids may optionally be hydroxylated, and are preferably monocarboxylic acids.

[0106] Esters of di- or tricarboxylic acids in C4-C22 and of alcohols in C1-C22 and esters of mono-, di- or tricarboxylic acids and of di-, tri-, tetra- or pentahydroxylated alcohols in C2-C26 can also be used.

[0107] Examples include octyldodecyl behenate, isocetyl behenate, cetyl lactate, stearyl octanoate, octyl octanoate, cetyl octanoate, decyl oleate, hexyl stearate, octyl stearate, myristyle stearate, cetyl stearate, stearyl stearate, octyl pelargonate, cetyl myristate, myristyle myristate, stearyl myristate, diethyl sebacate, diisopropyl sebacate, diisopropyl adipate, din-propyl adipate, dioctyl adipate, maleate dioctyl, octyl palmitate, myristyle palmitate, cetyl palmitate, stearyl palmitate, and mixtures thereof.

[0108] Preferably, the solid fatty acid and / or fatty alcohol esters are selected from C9-C26 alkyl palmitates, in particular myristyle, cetyl, stearyl palmitates; C9-C26 alkyl myristates such as cetyl myristate, stearyl myristate and myristyle myristate; C9-C26 alkyl stearates, in particular myristyle, cetyl and stearyl stearates; and mixtures thereof.

[0109] A wax, as defined in the present invention, is a lipophilic compound, solid at 25°C and atmospheric pressure, with a reversible solid / liquid phase change, a melting point above approximately 40°C and up to 200°C, and an anisotropic crystalline structure in the solid state. Generally, the size of the wax crystals is such that they diffract and / or scatter light, giving the composition a cloudy, more or less opaque appearance. By heating the wax to its melting point, it can be made miscible with oils and form a microscopically homogeneous mixture, but by lowering the temperature of the mixture to room temperature, the wax recrystallizes, detectable both microscopically and macroscopically. (opalescence).

[0110] In particular, the waxes suitable for the invention can be chosen from waxes of animal, vegetable, mineral origin, non-siliconized synthetic waxes and their mixtures.

[0111] Examples include hydrocarbon waxes, such as beeswax, particularly of biological origin, lanolin wax, and Chinese insect waxes; rice bran wax, carnauba wax, candelilla wax, ouricury wax, alfa wax, berry wax, shellac wax, Japanese wax and sumac wax; Montan wax, orange and lemon waxes, microcrystalline waxes, paraffins and ozokerite; polyethylene waxes, waxes obtained by Fisher-Tropsch synthesis and waxy copolymers, as well as their esters.

[0112] We can also mention microcrystalline waxes in C20 to C60, such as Microwax HW.

[0113] We can also mention PM 500 polyethylene wax marketed under the reference Permalen 50-L polyethylene.

[0114] We can also mention waxes obtained by catalytic hydrogenation of animal or vegetable oils having linear or branched fatty chains, in the C8 to C32 range. Among these, we can mention in particular isomerized jojoba oil, such as trans isomerized partially hydrogenated jojoba oil, in particular that manufactured or marketed by the company Desert Whale under the trade reference Iso-Jojoba-50®, hydrogenated sunflower oil, hydrogenated castor oil, hydrogenated coconut oil, hydrogenated lanolin oil, and di-(trimethyloi-1,1,1 propane tetrastearate), in particular that sold under the name Hest 2T-4S® by the company HETERENE.

[0115] Waxes obtained by hydrogenation of esterified castor oil with cetyl alcohol, such as those sold under the names Phytowax ricin 16L64® and 22L73® by the company SOPHIM, can also be used.

[0116] As a wax, a C20 to C40 alkyl (hydroxystearyloxy)stearate (the alkyl group comprising 20 to 40 carbon atoms) can also be used, alone or in a mixture. Such a wax is notably sold under the names "Kester Wax K 82 P®", "Hydroxypolyester K 82 P®" and "Kester Wax K 80 P®" by the company KOSTER KEUNEN.

[0117] It is also possible to use microwaxes in the compositions of the invention; examples include carnauba microwaxes, such as that marketed under the name MicroCare 350® by MICRO POWDERS, synthetic wax microwaxes, such as that marketed under the name MicroEase 114S® by MICRO POWDERS, and microwaxes made from a mixture of carnauba wax and polyethylene wax, such as those marketed under the names Micro Care 300® and 310® by MICRO POWDERS, microwaxes made from a mixture of camauba wax and synthetic wax, such as that marketed under the name Micro Care 325® by MICRO POWDERS, polyethylene microwaxes, such as those marketed under the names Micropoly 200®, 220®, 220L® and 250S® by MICRO POWDERS and polytetrafluoroethylene microwaxes, such as those marketed under the names Microslip 519® and 519 L® by MICRO POWDERS.

[0118] Waxes are preferably chosen from mineral waxes such as paraffin wax, petroleum jelly, lignite or ozokerite; vegetable waxes such as cocoa butter or waxes from cork or sugar cane fibers, olive wax, rice wax, hydrogenated jojoba wax, Ouricoury wax, Camauba wax, Candelila wax, Alfa wax, or absolute flower waxes such as blackcurrant flower essential wax sold by the BERTIN company (France); waxes of animal origin such as beeswax or modified beeswax (cerabellina), spermaceti, lanolin wax and lanolin derivatives; microcrystalline waxes; and mixtures thereof.

[0119] Ceramides or ceramide analogues such as glycoceramides, which can be used in compositions according to the invention, are known; in particular, ceramides of classes I, II, III and V according to the DAWNING classification may be mentioned.

[0120] The ceramides or their analogues that may be used preferably conform to the following formula: R3CH(OH)CH(CH2OR2)(NHCOR1), in which

[0121] RI designates an alkyl group, linear or branched, saturated or unsaturated, derived from C14-C30 fatty acids, this group being able to be substituted by a hydroxyl group in the alpha position, or a hydroxyl group in the omega position esterified by a saturated or unsaturated fatty acid in the C16-C30 position;

[0122] R2 denotes a hydrogen atom, a (glycosyl)n group, a (galactosyl)m group or a sulfogalactosyl group, in which n is an integer ranging from 1 to 4 and m is an integer ranging from 1 to 8;

[0123] R3 designates a C15-C26 hydrocarbon group, saturated or unsaturated in the alpha position, this group being able to be substituted by one or more alkyl groups in C1-C14; it being understood that in the case of natural ceramides or glycoceramides, R3 may also designate an alpha-hydroxyalkyl group in C15-C26, the hydroxyl group being optionally esterified by an alpha-hydroxy acid in C16-C30.

[0124] The ceramides most particularly preferred are the compounds for which RI denotes a saturated or unsaturated alkyl derived from C16-C22 fatty acids; R2 denotes a hydrogen atom and R3 denotes a linear saturated C15 group.

[0125] Preferably, ceramides are used in which RI designates a saturated or unsaturated alkyl group derived from C14-C30 fatty acids; R2 designates a ga-lactosyl or sulfogalactosyl group; and R3 designates a -CH=CH-(CH2)12-CH3 group.

[0126] Compounds can also be used in which RI designates a saturated or unsaturated alkyl radical derived from C12-C22 fatty acids; R2 designates a galactosyl or sulfogalactosyl radical and R3 designates a C12-C22 hydrocarbon radical, saturated or unsaturated and preferably a -CH=CH-(CH2)12-CH3 group.

[0127] As particularly preferred compounds, we may also mention 2-N-linoleoylamino-octadecane-l,3-diol; 2-N-oleoylamino-octadecane-l,3-diol; 2-N-palmitoylamino-octadecane-l,3-diol; 2-N-stearoylamino-octadecane-l,3-diol; 2-N-behenoylamino-octadecane-l,3-diol; 2-N-[2-hydroxy-palmitoyl]-amino-octadecane-l,3-diol; 2-N-stearoyl amino-octadecane-1,3,4-triol, and in particular N-stearoyl phytosphingosine; 2-N-palmitoylamino-hexadecane-1,3-diol; N-linoleoyldihydrosphingosine; N-oleoyldihydrosphingosine; N-palmitoyldihydrosphingosine; N-stearoyldihydrosphingosine; and N-behenoyldihydrosphingosine; N-docosanoyl N-methyl-D-glucamine; cetyl acid N-(2-hydroxyethyl)-N-(3-cetyloxy-2-hydroxypropyl)amide; and bis-(N-hydroxyethyl N-cetyl)malonamide; and mixtures thereof. Preferably, N-oleoyldihydrosphingosine shall be used.

[0128] Solid fats are preferably chosen from solid fatty acids, solid fatty alcohols, waxes and mixtures thereof.

[0129] According to a preferred embodiment, the composition according to the invention comprises at least one liquid fat, preferably chosen from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils, liquid fatty alcohols, liquid fatty esters, silicone oils and mixtures thereof.

[0130] According to another particularly preferred embodiment, the composition according to the invention comprises at least one liquid fat selected from liquid hydrocarbons comprising more than 16 carbon atoms, in particular petroleum jelly, liquid fatty alcohols, and mixtures thereof.

[0131] More preferably, the composition according to the invention comprises at least one liquid fat chosen from liquid hydrocarbons comprising more than 16 carbon atoms, in particular petroleum jelly.

[0132] According to another preferred embodiment, the composition according to the invention comprises at least one solid fat, preferably chosen from solid fatty alcohols, waxes, and mixtures thereof.

[0133] According to another preferred embodiment, the composition according to the invention comprises at least one liquid fat selected from liquid hydrocarbons comprising more than 16 carbon atoms, in particular petroleum jelly and minus a solid fat, preferably at least a wax.

[0134] Preferably, the total content of the fat or fats in the composition according to the invention is greater than or equal to 10.5% by weight, preferably greater than or equal to 12% by weight, preferably greater than or equal to 15% by weight, better greater than or equal to 20% by weight, better still greater than or equal to 25% by weight in relation to the total weight of the composition.

[0135] Preferably, the total content of the fat or fats in the composition according to the invention ranges from 10.5 to 60% by weight, preferably from 12 to 50% by weight, preferably from 15 to 40% by weight, better from 20 to 35% by weight, even better from 25 to 35% by weight relative to the total weight of the composition.

[0136] Preferably, the total content of the liquid fat(s) in the composition according to the invention ranges from 10.5 to 60% by weight, preferably from 12 to 50% by weight, more preferably from 15 to 40% by weight, better from 20 to 35% by weight, even better from 25 to 35% by weight relative to the total weight of the composition. Amino acid compound(s)

[0137] The composition according to the invention comprises one or more amino acid-type compound(s).

[0138] For the purposes of this invention, an amino acid compound is defined as an organic compound comprising one or more carboxylic acid and / or sulfonic acid functions, and one or more amine functions, the amine function(s) being able to be intra-cyclic, possibly in the form of a salt.

[0139] Preferably, the amino acid compound(s) are chosen from amino acid compounds comprising only one or more carboxylic acid functions (i.e., not comprising a sulfonic acid function) and / or their salts. These compounds are also called carboxylic amino acid compounds and are particularly preferred.

[0140] Preferably, the composition according to the present invention comprises one or more amino acid type compounds selected from the compounds corresponding to formula (I) below and / or their salts.

[0141] Amino acid type compounds can therefore correspond to the formula (I): COOH (I) H — C — N(H)P R in which p is an integer equal to 1 or 2, it being understood that: - when p = 1, R forms with the nitrogen atom a saturated heterocycle comprising 5 to 8 links, preferably 5 links, this cycle possibly being substituted by one or more groups chosen from hydroxyl or (Cl-C4)alkyl; - when p = 2, R represents a hydrogen atom or a (Cl-C12)alkyl group, preferably (Cl-C4)alkyl, linear or branched, saturated, possibly interrupted by one or more heteroatoms or groups chosen from -S-, -NH- or -C(NH)- and / or possibly substituted by one or more groups chosen from hydroxyl (OH), amino (NH2), -SH, -COOH, -C0NH2 or -NH-C(NH)-NH2.

[0142] Preferably, when p = 1, R forms with the nitrogen atom a saturated heterocycle comprising 5 links, this cycle not being substituted.

[0143] Preferably, p=2.

[0144] Preferably, when p = 2, R represents a hydrogen atom or a linear or branched saturated (Cl-C4)alkyl group, optionally interrupted by an -S- heteroatom and / or optionally substituted by one or two groups selected from hydroxyl, amino or -NH-C(NH)-NH2.

[0145] Preferably, p=2 and R represents a hydrogen atom.

[0146] Amino acid type compounds can also be a salt of compound of formula (I).

[0147] These salts include salts with organic or mineral bases, for example alkali metal salts, such as lithium, sodium, potassium salts; alkaline earth metal salts such as magnesium, calcium and zinc salts.

[0148] Amino acid type compounds may be in the form of an optical isomer of L, D or DL ​​configuration, preferably of L configuration.

[0149] By way of examples according to the present invention of compounds in the form of an optical isomer of configuration L, L-proline, L-methionine, L-serine, L-arginine and L-lysine may be cited.

[0150] Preferably, the amino acid type compound(s) according to the invention are chosen from glycine, proline, methionine, serine, arginine, lysine, their salts (in particular of alkali or alkaline earth metals, or zinc) and their mixtures.

[0151] Preferably, the amino acid type compound(s) according to the invention are chosen from glycine, proline, methionine, serine, arginine, their salts and mixtures thereof.

[0152] Even better, the amino acid type compound is chosen from glycine, its salts (in particular of alkali or alkaline earth metals, or zinc) and mixtures thereof.

[0153] Examples of glycine salts according to the present invention include sodium glycinate, zinc glycinate, calcium glycinate, magnesium glycinate, manganese glycinate and potassium glycinate, preferably sodium glycinate and potassium glycinate.

[0154] Preferably, the amino acid-type compound is glycine.

[0155] The total content of amino acid compound(s) present in the composition according to the invention can range from 0.01% to 5% by weight, preferably from 0.05% to 4% by weight, more preferably from 0.1% to 3% by weight, better from 0.2% to 2% by weight relative to the total weight of the composition.

[0156] In particular, the total content of amino carboxylic acid type compound(s) in the composition according to the invention can range from 0.01% to 5% by weight, preferably from 0.05 to 4% by weight, more preferably from 0.1 to 3% by weight, better from 0.2 to 2% by weight relative to the total weight of the composition.

[0157] Better still, the total content of amino acid type compound(s) selected from glycine, proline, methionine, serine, arginine, lysine, their salts and mixtures, in the composition according to the invention can range from 0.01% to 5% by weight, preferably from 0.05% to 4% by weight, more preferably from 0.1% to 3% by weight, better from 0.2% to 2% by weight relative to the total weight of the composition.

[0158] In particular, the total content of amino acid type compound(s) selected from glycine, its salts and mixtures thereof, in the composition according to the invention may range from 0.01% to 5% by weight, preferably from 0.05% to 4% by weight, more preferably from 0.1% to 3% by weight, better from 0.2% to 2% by weight relative to the total weight of the composition.

[0159] Even better, the glycine content in the composition according to the invention can range from 0.01% to 5% by weight, preferably from 0.05% to 4% by weight, more preferably from 0.1% to 3% by weight, better still from 0.2% to 2% by weight relative to the total weight of the composition. (Poly)carboxylic acids

[0160] The composition according to the invention comprises one or more (poly)carboxylic acids, different from the amino acid type compound(s) and fatty acids previously described, one of their salts or mixtures thereof.

[0161] Preferably, the (poly)carboxylic acid(s) is / are chosen from the (poly)carboxylic acid(s) of the following formula (II):

[0162] Formula (II) wherein: - n is an integer between 0 and 10, better between 1 and 5, even better between 1 and 3, preferably n=1 or 2, preferably n=2; - A is a monovalent (when n=0) or multivalent (when n is different from 0) hydrocarbon group, saturated or unsaturated, linear, branched, cyclic, or even aromatic, comprising from 1 to 6 carbon atoms, preferably from 1 to 4 carbon atoms possibly substituted by one or more hydroxy (OH) groups.

[0163] Preferably, A is a monovalent or multivalent (Cl-C6)alkylene group, better (C2-C4)alkylene, or phenylene, optionally substituted by one or more hydroxy groups.

[0164] Preferably, the (poly)carboxylic acids of formula (II) are alpha-hydroxy acids, for which A is a (Cl-C6)alkylene group, better (C2-C4)alkylene, or phenylene, substituted by 1 or 2 hydroxy groups, preferably 1 hydroxy group; and n = 0 to 2.

[0165] In particular, cite carboxylic acids of formula (II) in which:

[0166] - n=0 and A is a monovalent (Cl-C6)alkyl group, in particular (C2-C4)alkyl, even typically substituted by one or more hydroxy (OH) groups, in particular 1 or 2 OH, preferably 1 OH;

[0167] - n=0 and A is a phenyl radical substituted by 1 OH radical; or

[0168] - n = 1 or 2, and A is a di- or trivalent (Cl-C6)alkyl group, better (C2-C4)alkyl, substituted by one or more hydroxy groups, in particular 1 or 2 OH, preferably 1 OH.

[0169] Preferably, the (poly)carboxylic acids may be selected from:

[0170] - citric acid (n=2 and A trivalent = -CH2-CHOH-CH2- ) ;

[0171] - salicylic acid (n=0 and A = phenyl substituted by an OH);

[0172] - lactic acid (n=0 and monovalent A = -CH(OH)CH3); and

[0173] - tartaric acid (n=l and A divalent = -CH(OH)-CH(OH)-).

[0174] Even more preferably, the (poly)carboxylic acid is citric acid.

[0175] The composition according to the invention preferably comprises said (poly)carboxylic acids and / or their salts in a total quantity ranging from 0.01 to 10% by weight, better from 0.1% to 8% by weight, and even better from 0.3% to 7% by weight, preferably from 0.5 to 6% by weight, or even from 1 to 5% by weight relative to the total weight of the composition.

[0176] In a preferred embodiment, the composition according to the invention comprises citric acid in a total amount ranging from 0.01 to 10% by weight, preferably from 0.1% to 8% by weight, and even better from 0.3% to 7% by weight, preferably from 0.5 to 6% by weight, or even from 1 to 5% by weight, relative to the total weight of the composition. Surfactants

[0177] The composition according to the present invention may comprise one or more surfactants. These may preferably be chosen from anionic surfactants, amphoteric surfactants, non-ionic surfactants, cationic surfactants and / or mixtures thereof.

[0178] Preferably, the composition according to the invention comprises one or more ten- Soy-active ingredients.

[0179] The term "anionic surfactant" means a surfactant comprising only anionic groups as ionic or ionizable groups. These anionic groups are preferably chosen from among the following groups: CO2H, CO2, SO3H, SO3, OSO3H, OSO3, H2PO3, HPO3, PO32, H2PO2, HPO2, PO22, POH and PO.

[0180] By way of examples of anionic surfactants usable in the composition according to the invention, mention may be made of alkyl sulfates, alkyl ether sulfates, alkylamidoether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates, alkylsulfonates, alkylamide sulfonates, alkylarylsulfonates, alpha-olefin sulfonates, paraffin sulfonates, alkylsulfosuccinates, alkylethersulfosuccinates, al-kylamide sulfosuccinates, alkylsulfoacetates, acylsarcosinates, acylglutamates, alkylsulfosuccinamates, acylisethionates and N-alkyl(Cl-C4)-N-acyltaurates, salts of alkyl monoesters and polyglycoside-polycarboxylic acids, acylactylates, D-galactoside-uronic acid salts, alkyl ether-carboxylic acid salts, alkyl aryl ether-carboxylic acid salts, alkyl amidoether-carboxylic acid salts; and the corresponding non-salted forms of all these compounds;The alkyl and acyl groups of all these compounds (unless otherwise stated) generally consist of 6 to 24 carbon atoms, and the aryl group generally designates a phenyl group.

[0181] Among anionic surfactants, we can also mention fatty acid salts, especially C8-C24, preferably C12-C20, different from the (poly)carboxylic acids previously described.

[0182] These compounds can be oxyethylated and then preferably comprise from 1 to 50 ethylene oxide motifs.

[0183] C6-C24 alkyl monoester salts and polyglycoside-polycarbyl acids can be selected from C6-C24 alkyl polyglycoside citrates, C6-C24 alkyl polyglycoside tartrates and C6-C24 alkyl polyglycoside sulfosuccinates.

[0184] When the anionic surfactant(s) are in salt form, they can be chosen from alkali metal salts such as sodium or potassium salt and preferably sodium salt, ammonium salts, amine salts and in particular amino alcohols or alkaline earth metal salts such as magnesium salt.

[0185] Examples of amino alcohol salts include mono-, di- and triethanolamine salts, mono-, di- or tri-isopropanol-amine salts, 2-amino 2-methyl 1-propanol salts, 2-amino 2-methyl 1,3-propanediol and tris(hydroxymethyl)aminomethane salts.

[0186] Salts of alkali or alkaline earth metals are preferably used, and in particular salts of sodium or magnesium.

[0187] Any anionic surfactants present may be mild anionic surfactants, i.e. without sulfate function.

[0188] With regard to mild anionic surfactants, particular examples may be given to the following compounds and their salts, as well as mixtures thereof: polyoxyalkylened alkyl ether carboxylic acids; polyoxyalkylened alkylaryl ether carboxylic acids; polyoxyalkylened alkylamido ether carboxylic acids, in particular those having 2 to 50 ethylene oxide groups; uronic alkyl D ga-lactoside acids; acylsarcosinates, acylglutamates; and alkyl polyglycosides carboxylic esters.

[0189] In particular, polyoxyalkylened alkyl ether carboxylic acids can be used, such as lauryl ether carboxylic acid (4,5 OE) marketed for example under the name AKYPO RLM 45 CA from KAO.

[0190] Among the anionic surfactants mentioned above, preferred use are sulfated surfactants such as alkylsulfates or alkyl ether sulfates, and acylglutamates, C12-C20 fatty acid salts, more preferably alkylsulfates and C12-C20 fatty acid salts.

[0191] The amphoteric or zwitterionic surfactant(s) usable in the composition according to the invention are preferably non-siliconized and may in particular be secondary or tertiary aliphatic amine derivatives, possibly quaternized, in which the aliphatic group is a linear or branched chain comprising 8 to 22 carbon atoms, said amine derivatives containing at least one anionic group such as, for example, a carboxylate, sulfonate, sulfate, phosphate or phosphonate group.

[0192] In particular, alkyl(C8-C2o)betaines, alkyl(C8-C20)sulfobetaines, alkyl(C8-C2o)amidoalkyl(Ci-C6)betaines, alkyl(C8-C20)-amidalkyl(Ci-C6)sulfobetaines, and mixtures thereof, may be cited.

[0193] Among the derivatives of secondary or tertiary aliphatic amines, possibly quantified and usable, as defined above, we may also mention the compounds of the following respective structures (III) and (IV):

[0194] Ra-CONHCH2CH2-N+(Rb)(Rc)-CH2COO, M+, X (III) formula (III), in which: - Ra represents an alkyl or alkenyl group in C10 to C30 derived from an acid RaCOOH, preferably present in hydrolyzed coconut oil, preferably Ra represents a heptyl, nonyl or undecyl group; - Rb represents a beta-hydroxyethyl group; - Rc represents a carboxymethyl group; - M+ represents a cationic counter ion derived from an alkali metal, alkaline earth metal, such as sodium, an ammonium ion, or an ion derived from an organic amine; and - X represents an organic or inorganic anionic counter ion, such as one chosen from among halides, acetates, phosphates, nitrates, alkyl(Ci-C4)sulfates, alkyl(Ci-C4)- or alkyl(Ci-C4)aryl-sulfonates, in particular methylsulfate and ethylsulfate; or else M+ and X are absent;

[0195] Ra'-CONHCH2CH2-N(B)(B') (IV) formula (IV), in which: - B represents the group -CH2CH2OX'; - B' represents the group -(CH2)ZY', with z = 1 or 2; - X' represents the group -CH2COOH, -CH2-COOZ', -CH2CH2COOH, CH2CH2 -COOZ', or a hydrogen atom; - Y' represents the group -COOH, -COOZ', -CH2CH(OH)SO3H or the group CH2 CH(OH)SO3-Z'; - Z' represents a cationic counter ion from an alkali or alkaline earth metal, such as sodium, an ammonium ion or an ion from an organic amine; - Ra' represents an alkyl or alkenyl group in C10 to C30 of an acid Ra'-COOH preferably present in coconut oil or in hydrolyzed linseed oil, preferably Ra' an alkyl group, especially in Cp and its iso form, an unsaturated Cp group.

[0196] These compounds are classified in the CTFA dictionary, 5th edition, 1993, under the names disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caprylamphodiacetate, disodium capryloamphodiacetate, disodium cocoampho-dipropionate, disodium lauroamphodipropionate, disodium caprylamphodi-propionate, disodium capryloamphodipropionate, lauroamphodi-propionic acid, cocoamphodipropionic acid.

[0197] As an example, we can cite cocoamphodiacetate marketed by the company RHODIA under the trade name MIRANOL® C2M concentrate.

[0198] Compounds of formula (V) can also be used: Ra”-NHCH(Y”)-(CH2)nCONH(CH2)nN(Rd)(Re) (V) formula (V), in which: - Y” represents the group -COOH, -COOZ”, -CH2-CH(OH)SO3H or the group CH2 CH(OH)SO3-Z”; - Rd and Re, independently of each other, represent an alkyl or hydroxyalkyl radical in C1 to C4; - Z” represents a cationic counter ion from an alkali or alkaline earth metal, such as sodium, an ammonium ion or an ion from an organic amine; - Ra” represents an alkyl or alkenyl group at C10 to C30 of an acid Ra”-COOH preferably present in coconut oil or hydrolyzed linseed oil; and - n and n', independently of each other, denote an integer ranging from 1 to 3.

[0199] Among the compounds of formula (V) we can mention the compound classified in the CTFA dictionary under the name sodium diethylaminopropyl cocoaspartamide and marketed by the company CHIMEX under the name CHIMEXANE HB.

[0200] These compounds can be used alone or in mixtures.

[0201] Among the amphoteric or zwitterionic surfactants mentioned above, alkyl(C8-C2o)betaines, such as cocobetaine, alkyl(C8-C20)amidoalkyl(C3-C8)betaines, such as cocamidopropylbetaine, alkyl(C8-C20)amphoacetates, alkyl(C8-C20)amphodiacetates and mixtures thereof are advantageously used; and preferably alkyl(C8-C2o)betaines, alkyl(C8-C20)amidoalkyl(C3-C8)betaines and mixtures thereof.

[0202] Preferably, the amphoteric or zwitterionic surfactant(s) are chosen from alkyl(C8-C20)betaines, alkyl(C8-C20)amidoalkyl(C3-C8)betaines and mixtures thereof.

[0203] The non-ionic surfactant(s) usable in the composition of the present invention are described in particular, for example, in "Handbook of Surfactants" by MR PORTER, Blackie & Son (Glasgow and London), 1991, pp 116-178.

[0204] Examples of non-ionic surfactants include the following compounds, alone or in mixtures: - alkyl(C8-C24)oxyalkylened phenols; - alcohols in the C8 to C40 range, saturated or unsaturated, linear or branched, oxyalkylated or glycerolated, preferably include one or two fatty chains; - C8 to C30 fatty acid amides, saturated or unsaturated, linear or branched, oxyalkylated; - esters of C8 to C30 acids, saturated or unsaturated, linear or branched, and of polyethylene glycols; - fatty acid and sucrose esters, - esters of C8 to C30 acids, saturated or unsaturated, linear or branched, and of sorbitol, preferably oxygenated; - C8-C30 fatty acid esters and sorbitan, - C8-C30 fatty acid esters and polyoxyethylenated sorbitan, - alkyl(C8-C3O)(poly)glucosides, alkenyl(C8-C3O)(poly)glucosides, possibly oxyalkylated (0 to 10 oxyalkylated motifs) and comprising 1 to 15 glucose motifs, alkyl (C8-C3O)(poly)glucoside esters, - oxyethylenated vegetable oils, saturated or unsaturated; - ethylene oxide and / or propylene oxide condensates; - A-alkyl(C8-C30)glucamine and A-acyl(C8-C30)-methylglucamine derivatives; - amine oxides.

[0205] They are chosen, in particular, from among alcohols, alpha-diols, alkyl(Ci-C20 )phenols, these compounds being ethoxylated, propoxylated or glycerolated, and having at least one fatty chain comprising, for example, from 8 to 24 carbon atoms, preferably from 8 to 18 carbon atoms, the number of ethylene oxide or propylene oxide groups being able to range in particular from 1 to 200 and the number of glycerol groups being able to range in particular from 1 to 30.

[0206] Other examples include ethylene oxide and propylene oxide condensates on fatty alcohols; ethoxylated fatty amides preferably having 1 to 30 ethylene oxide motifs; polyglycerol fatty amides having on average 1 to 5 glycerol groups and in particular 1.5 to 4; fatty acid esters of sucrose; fatty acid esters of polyethylene glycol; oxyethylenated vegetable oils; N-(C6-C24 alkyl)glucamine derivatives; amine oxides such as (C10-C14 alkyl)amine oxides or N-(C10-C14 acyl)aminopropylmorpholine oxides.

[0207] Esters (in particular mono-, di-, tri-esters) of C8-C30 fatty acids, preferably C12-C22, and of sorbitan may be selected from: Sorbitan Caprylate; Sorbitan Cocoate; Sorbitan Isostearate; Sorbitan Laurate; Sorbitan Oleate; Sorbitan Palmitate; Sorbitan Stearate; Sorbitan Diisostearate; Sorbitan Dioleate; Sorbitan Distearate; Sorbitan Sesquicaprylate; Sorbitan Sesquii-sostearate; Sorbitan Sesquioleate; Sorbitan Sesquistearate; Sorbitan Triisostearate; Sorbitan Trioleate; Sorbitan Tristearate.

[0208] Esters (in particular mono, di, tri esters) of C8-C30 fatty acids and polyoxyethylenated sorbitan are preferably selected from C8-C30 fatty acid and oxyethylenated sorbitan ester(s) having 1 to 30 ethylene oxide motifs, preferably 2 to 20 ethylene oxide motifs, preferably still 2 to 10 ethylene oxide motifs.

[0209] Preferably, the C8-C30 fatty acid and oxyethylenated sorbitan ester(s) is / are selected from Ci2-Ci8 fatty acid and oxyethylenated sorbitan esters, in particular from oxyethylenated lauric acid, myristic acid, cetyl acid and stearic acid and sorbitan esters.

[0210] Preferably, the C8-C30 fatty acid ester(s) and oxyethylenated sorbitan is / are selected from oxyethylenated sorbitan monolaurate (4 EO) (POLYSORBATE-21), oxyethylenated sorbitan monolaurate (20 EO) (POLYSORBATE-20), oxyethylenated sorbitan monopalmitate (20 EO) (POLYSORBATE-40), oxyethylenated sorbitan monostearate (20 EO) (POLYSORBATE-60), oxyethylenated sorbitan monostearate (4 EO) (POLYSORBATE-61), oxyethylenated sorbitan monooleate (20 EO) (POLYSORBATE-80), oxyethylenated sorbitan monooleate (5 EO) (POLYSORBATE-81), sorbitan oxyethylenated tristearate (20 OE) (POLYSORBATE-65), oxyethylenated sorbitan trioleate (20 OE) (POLYSORBATE-85).

[0211] The non-ionic surfactant(s) are preferably selected from C8-C24 ethoxylated fatty alcohols comprising from 1 to 200 ethylene oxide groups, preferably from 1 to 50 ethylene oxide groups, C6-C24 (alkyl) polyglycosides, C8-C30 fatty acid esters, saturated or unsaturated, linear or branched, and of glycerol, C8-C30 fatty acid esters and of oxyethylenated sorbitan, and mixtures thereof, preferably from C8-C24 ethoxylated fatty alcohols comprising from 1 to 50 ethylene oxide groups, C6-C24 (alkyl) polyglycosides, C8-C30 fatty acid esters, saturated or unsaturated, linear or branched, and of glycerol.

[0212] More preferably, the non-ionic surfactant(s) are chosen from C8-C24 ethoxylated fatty alcohols comprising from 1 to 200 ethylene oxide groups, preferably from 1 to 50 ethylene oxide groups.

[0213] The cationic surfactant(s) usable in the composition according to the invention are generally chosen from primary, secondary or tertiary fatty amines, possibly polyoxyalkylated, quaternary ammonium salts, and mixtures thereof.

[0214] Fatty amines generally comprise at least one C8-C30 hydrocarbon chain. Examples of usable fatty amines according to the invention include stearyl amidopropyl dimethylamine and distearylamine.

[0215] Quaternary ammonium salts may be cited in particular, for example:

[0216] - those corresponding to the following general formula (VI): in which the R8 to Ru groups, which may be identical or different, represent an aliphatic group, linear or branched, comprising from 1 to 30 carbon atoms, or an aromatic group such as aryl or alkylaryl, at least one of the R8 to Rn groups comprising from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms. The aliphatic groups may comprise heteroatoms such as, in particular, oxygen, nitrogen, sulfur, and halogens. Aliphatic groups are for example chosen from the alkyl groups in C1-C30, alkoxy in Ci-C30, polyoxyalkylene (C2-C6), alkylamide in Ci-C30, alkyl(Ci2-C22)amidoalkyl(C2-C6), alkyl(Ci2-C22)acetate, and hydroxyalkyl in Ci-C30, X'est an anion chosen from the group of halides, phosphates, acetates, lactates, alkyl(Ci-C4)sulfates, alkyl(Ci-C4)- or alkyl(Ci-C4)aryl-sulfonates. Among the quaternary ammonium salts of formula (VI), preference is given, on the one hand, to tetraalkylammonium chlorides such as, for example, dialkyldimethylammonium or alkyltrimethylammonium chlorides in which the alkyl group comprises approximately 12 to 22 carbon atoms, in particular behenyltrimethylammonium, distearyldimethylammonium, cetyltrimethylammonium, benzyldimethylstearylammonium chlorides or, on the other hand, distearoylethylhydroxyethylmethylammonium methosulfate, dipalmitoylethylhydroxyethylammonium methosulfate or distearoylethylhydroxyethylammonium methosulfate, or, finally, palmitylamidopropyltrimethylammonium chloride or stearamidopropyldimethyl-(myristylacetate)-ammonium chloride marketed under the name CERAPHYL® 70 by the company VAN DYK.

[0217] - quaternary ammonium salts of imidazoline, such as for example those of The following formula (VII): - * (VII) CO— x in which R12 represents an alkenyl or alkyl group comprising 8 to 30 carbon atoms, for example derived from tallow fatty acids, R13 represents a hydrogen atom, a Ci-C4 alkyl group or an alkenyl or alkyl group comprising 8 to 30 carbon atoms, R14 represents a CrC4 alkyl group, R15 represents a hydrogen atom, a CrC4 alkyl group, X- is an anion chosen from the group of halides, phosphates, acetates, lactates, alkyl(Ci-C4)sulfates, alkyl(Ci-C4)- or alkyl(Ci-C4)aryl-sulfonates. Preferably, R12 and R13 designate a mixture of alkenyl or alkyl groups comprising 12 to 21 carbon atoms, for example, derived from tallow fatty acids; R14 designates a methyl group; and R15 designates a hydrogen atom. Such a product is, for example, marketed under the name REWOQUAT® W 75 by the company REWO.

[0218] - quaternary di- or triammonium salts in particular of formula (VIII) next: in which R16 designates an alkyl group comprising approximately 16 to 30 atoms of carbon possibly hydroxylated and / or interrupted by one or more oxygen atoms, R17 is chosen from hydrogen or an alkyl group comprising 1 to 4 carbon atoms or a -(CH2)3-N+ group (R16a)(R17a)(R18a), R16a, R17a, R18a, R18, R19, R20 and R21, identical or different, are chosen from hydrogen or an alkyl group comprising 1 to 4 carbon atoms, and X- is an anion chosen from the group of halides, acetates, phosphates, nitrates, alkyl(Cl-C4)sulfates, alkyl(Cl-C4)- or alkyl(Cl-C4)aryl-sulfonates, in particular methylsulfate and ethylsulfate. Examples of such compounds include Finquat CT-P offered by FINETEX (Quaternium 89) and Finquat CT offered by FINETEX (Quaternium 75).

[0219] - quaternary ammonium salts containing one or more ester functions, such as that, for example, those of the following formula (IX): (C^O^--FU (IX) o ।....... C--(O-Cf HfS(OHy X Fy in which: R22 is chosen from among C1-C6 alkyl groups and C1-C6 hydroxyalkyl or dihydroxyalkyl groups; R23 is chosen from among: the -C(O)R26 group, C1-C22 hydrocarbon groups R27, linear or branched, saturated or unsaturated, the hydrogen atom; R25 is chosen from among: the -C(O)R28 group, C1-C6 hydrocarbon groups R29, linear or branched, saturated or unsaturated, the hydrogen atom; R24, R26 and R28, identical or different, are chosen from among C7-C21 hydrocarbon groups, linear or branched, saturated or unsaturated; r, s and t, identical or different, are integers from 2 to 6; rl and tl, identical or different, are 0 or 1;r2 + rl = 2 r and tl + t2 = 2 t, y is an integer from 1 to 10, x and z, identical or different, are integers from 0 to 10, X- is a simple or complex anion, organic or inorganic, provided that the sum x + y + z is from 1 to 15, that when x is 0 then R23 designates R27 and that when z is 0 then R25 designates R29. ; R22 alkyl groups can be linear or branched, and more particularly linear. Preferably, R22 designates a methyl, ethyl, hydroxyethyl or dihydroxypropyl group, and more particularly a methyl or ethyl group. Advantageously, the sum x + y + z is worth from 1 to 10. When R23 is a hydrocarbon R27 group, it can be long and have 12 to 22 carbon atoms, or short and have 1 to 3 carbon atoms. When R25 is a hydrocarbon group R29, it preferably has 1 to 3 atoms of carbon. Advantageously, R24, R26 and R28, identical or different, are chosen from among the Cl 1-C21 hydrocarbon groups, linear or branched, saturated or unsaturated, and more particularly from among the alkyl and alkenyl groups in Cl 1-C21, linear or branched, saturated or unsaturated. Preferably, x and z, whether identical or different, are equal to 0 or 1. Advantageously, y is equal to 1. Preferably, r, s and t, whether identical or different, are equal to 2 or 3, and even more particularly are equal to 2. The X- anion is preferably a halide, preferably a chloride, bromide, or iodide, an alkyl(Cl-C4)sulfate, alkyl(Cl-C4)-, or alkyl(Cl-C4)aryl-sulfonate. However, methanesulfonate, phosphate, nitrate, tosylate, an anion derived from an organic acid such as acetate or lactate, or any other ammonium-compatible anion with an ester function may be used. The X- anion is more specifically chloride, methylsulfate or ethylsulfate. In the composition according to the invention, ammonium salts of formula (XIII) are used in particular, wherein: R22 designates a methyl or ethyl group, x and y are equal to 1, z is equal to 0 or 1, r, s and t are equal to 2; R23 is chosen from: the -C(O)R26 group, methyl, ethyl or C14-C22 hydrocarbon groups, the hydrogen atom, R25 is chosen from: the -C(O)R28 group, the hydrogen atom, R24, R26 and R28, identical or different, are chosen from C13-C17 hydrocarbon groups, linear or branched, saturated or unsaturated, and preferably from C13-C17 alkyl and alkenyl groups, linear or branched, saturated or unsaturated. Advantageously, hydrocarbon groups are linear. Examples of compounds with formula (XIII) include salts, notably the chloride or methylsulfate of diacyloxyethyldimethylammonium, diacyloxyethyl-hydroxyethyl methylammonium, monoacyloxyethyldihydroxyethylmethyl ammonium, triacyloxyethylmethylammonium, monoacyloxyethylhydroxyethyl-dimethylammonium, and mixtures thereof. The acyl groups preferably have 14 to 18 carbon atoms and are most often derived from a vegetable oil such as palm or sunflower oil. When the compound contains several acyl groups, these may be identical or different. These products are obtained, for example, by direct esterification of triethanolamine, triisopropanolamine, alkyldiethanolamine or alkyldiisopropanolamine possibly oxyalkylated on fatty acids or on mixtures of fatty acids of vegetable or animal origin, or by transesterification of their methyl esters. This esterification is followed by quaternization using an alkylating agent, such as an alkyl halide, preferably methyl or ethyl, a dialkyl sulfate, preferably methyl or ethyl, methyl methanesulfonate, methyl para-toluenesulfonate, glycol chlorohydrin or glycerol. Such compounds are marketed for example under the names DEHYQUART® by the company HENKEL, STEPANQUAT® by the company STEPAN, NOXAMIUM® by the company CECA, REWOQUAT® WE 18 by the company REWO-WITCO. The composition according to the invention may contain, for example, a mixture of quaternary ammonium mono-, di- and triester salts with a majority by weight of diester salts. Ammonium salts containing at least one ester function, as described in patents US-A-4874554 and US-A-4137180, can also be used. Behenoylhydroxypropyltrimethylammonium chloride, for example, offered by the company KAO under the name Quartamin BTC 131, can also be used. Preferably, ammonium salts containing at least one ester function contain two ester functions. Among cationic surfactants, preference is given to the salts of cetyltrimethylammonium, behenyltrimethylammonium, dipalmitoyl-ethylhydroxy ethylmethylammonium, and their mixtures, and more particularly to behenyltrimethylammonium chloride, cetyltrimethylammonium chloride, dipalmitoylethylhydroxy ethylammonium methosulfate, and their mixtures.

[0220] Preferably, the surfactant(s) are chosen from anionic surfactants, non-ionic surfactants and their mixtures, more preferably from anionic surfactants.

[0221] More preferably, the surfactant(s) are chosen from ethoxylated C8-C24 fatty alcohols comprising 1 to 200 ethylene oxide groups, preferably 1 to 50 ethylene oxide groups, alkyl sulfates, C12-C20 fatty acid salts and mixtures thereof, better from alkyl sulfates, C12-C20 fatty acid salts and mixtures thereof.

[0222] According to a preferred embodiment, the composition comprises one or more surfactants selected from alkyl sulfates. When the composition comprises one or more surfactant(s), the total surfactant content in the composition preferably ranges from 0.01 to 20% by weight, more preferably from 0.1 to 15% by weight, better from 0.5 to 10% by weight, even better from 1 to 8% by weight relative to the total weight of the composition.

[0223] When the composition includes one or more non-ionic and / or anionic surfactant(s), the total content of non-ionic and / or anionic surfactant(s) in the composition preferably ranges from 0.01 to 20% by weight, more preferably from 0.1 to 15% by weight, better from 0.5 to 10% by weight, even better from 1 to 8% by weight relative to the total weight of the composition. Thickening polymer

[0224] The composition according to the present invention may also include one or more thickening polymers.

[0225] Preferably, the composition according to the invention comprises one or more thickening polymers.

[0226] For the purposes of this invention, a thickening polymer is defined as a polymer which, when introduced at 1% by weight into an aqueous or hydroalcoholic solution containing 30% ethanol and at pH 7, or into an oil selected from petroleum jelly, isopropyl myristate, or cyclopentamethoxane, makes it possible to achieve a viscosity of at least 100 cps (centipoise), in particular at least 200 cps, preferably at least 500 cps, at 25 °C and at a shear rate of 1 s⁻¹. This viscosity can be measured using a cone-to-plate viscometer (Haake R600 rheometer or similar).

[0227] The thickening polymers according to the invention may be of natural or synthetic origin. A mixture of several thickening polymers may also be used. They may be selected from nonionic, anionic, cationic, amphoteric thickening polymers and mixtures thereof.

[0228] Thickening polymers can be selected from thickening acrylic polymers and thickening polysaccharides.

[0229] For the purposes of this invention, acrylic polymer means a polymer resulting from a polymerization reaction involving one or more structural monomer(s): h5c=c:^ COR. %

[0230] with R3 denoting a hydrogen atom or a linear or branched C1-C4 alkyl radical,

[0231] and R4 designating a hydrogen atom, a linear or branched C1-C4 alkyl radical, an NR5R6 radical or a linear or branched C1-C30 alkoxy radical, said radicals possibly being substituted by one or more OH and / or quaternary ammonium radical;

[0232] R5 and R6 designating independently of each other, a hydrogen atom or an alkyl radical, linear or branched, in C1-C30 possibly oxyalkylated, possibly comprising a sulfonic group.

[0233] Preferably R3 designates a hydrogen atom or a methyl radical.

[0234] Acrylic thickening polymers that may be used in the present inventions can be chosen from:

[0235] (a) associative (meth)acrylic polymers;

[0236] (b) crosslinked (meth)acrylic acid homopolymers and crosslinked copolymers of (meth)acrylic acid and C1-C6 alkyl acrylate;

[0237] (c) non-ionic homo- and copolymers containing unsaturated monomers ethylenic of ester and / or amide type;

[0238] (d) ammonium acrylate homopolymers and acrylate copolymers of ammonium and acrylamide;

[0239] (e) homopolymers and copolymers of (meth)acrylamido alkyl(Cl C4) sul- funicals;

[0240] (f) methacryloyloxyalkyl(Cl C4) homopolymers and copolymers trialkyl(Cl-C4) ammonium crosslinked.

[0241] By "associative thickening polymer", according to the invention, an amphiphilic thickening polymer comprising both hydrophilic and hydrophobic motifs, in particular comprising at least one C8 C30 fatty chain and at least one hydrophilic motif.

[0242] The associative thickening (meth)acrylic polymers according to the invention can be non-ionic, anionic, cationic or amphoteric.

[0243] Preferably, the non-ionic associative thickening polymers according to the invention are selected from:

[0244] - copolymers of C1-C6 alkyl (meth)acrylates and am monomers philophiles comprising at least one fatty chain (e.g., oxyethylenated alkyl (C8-C22) acrylates) such as, for example, the oxyethylenated methyl methacrylate / stearyl acrylate copolymer sold by GOLDSCHMIDT under the name ANTIL 208; and

[0245] - copolymers of hydrophilic (meth)acrylates and hydrophobic monomers comprising at least one fatty chain (for example alkyl (C8-C22) (meth)acrylates) such as, for example, polyethylene glycol methacrylate / lauryl methacrylate copolymer.

[0246] The anionic associative thickening polymers according to the invention can be selected from those comprising at least one hydrophilic motif of the type of olefinic unsaturated carboxylic acid, and at least one hydrophobic motif of the type of alkyl(C10-C30) ester of unsaturated carboxylic acid.

[0247] They are preferably chosen from those (i) whose hydrophilic motif of the olefinic unsaturated carboxylic acid type corresponds to the monomer of formula (X) following: HgC—OH (X) Oh

[0248] in which R1 designates H or CH3 or C2H5, i.e. acrylic acid, methacrylic acid or ethacrylic acid motifs and (ii) the hydrophobic motif of the type alkyl (C10-C30) unsaturated carboxylic acid corresponds to the monomer of formula (XI) following: H?C—C.......Ç.......ORS (XI) O

[0249] in which R1 denotes H or CH3 or C2H5, preferably H or CH3; and R2 denotes an alkyl radical in C10-C30, preferably in C12-C22.

[0250] Alkyl (C10-C30) esters of unsaturated carboxylic acids according to the invention include, for example, lauryl acrylate, stearyl acrylate, decyl acrylate, isodecyl acrylate, dodecyl acrylate, and the corresponding methacrylates, lauryl methacrylate, stearyl methacrylate, decyl methacrylate, isodecyl methacrylate and dodecyl methacrylate.

[0251] The anionic associative thickening polymers according to the present invention may more particularly designate polymers formed from a mixture of monomers comprising:

[0252] (i) either acrylic acid and one or more esters of the following formula (XII): —C— C OR2 (XH) R' 6

[0253] in which R1 designates H or CH3; and R2 designates an alkyl radical having 12 to 22 carbon atoms, and optionally a crosslinking agent, such as, for example, those consisting of 60 to 95% by weight of acrylic acid (hydrophilic motif), 4 to 40% by weight of C10-C30 alkyl acrylate (hydrophobic motif), and 0 to 6% by weight of polymerizable crosslinking monomer, or those consisting of 96 to 98% by weight of acrylic acid, 1 to 4% by weight of C10-C30 alkyl acrylate and 0.1 to 0.6% by weight of polymerizable crosslinking monomer,

[0254] (ii) essentially acrylic acid and lauryl methacrylate, such as that formed from 66% by weight of acrylic acid and 34% by weight of lauryl methacrylate.

[0255] As a crosslinking agent, we can mention in particular polyallylethers such as polyallylsucrose and polyallylpentaerythritol.

[0256] Among the aforementioned polymers, particular preference is given to the products sold by the company GOODRICH under the trade names PEMULEN TRI®, PEMULEN TR2®, CARBOPOL 1382®, and even more preferably PEMULEN TRI®, the product sold by the company LUBRIZOL under the trade name CARBOPOL ETD 2020 POLYMER® (INCI name: ACRYLATES / C10-30 ALKYL ACRYLATE CROSSPOLYMER) and the product sold by the company SEPC under the name COATEX SX®.

[0257] Among the anionic amphiphilic polymers with fatty chains, we can also mention copolymers comprising among their monomers an α,[3-monoethylenic unsaturation carboxylic acid and an ester of an α,[3-monoethylenic unsaturation carboxylic acid and oxyalkylated fatty alcohol.

[0258] Preferably, these compounds also comprise as a monomer an ester of α,[3-monoethylenic unsaturated carboxylic acid and C1-C4 alcohol.

[0259] Examples include ACULYN 22® sold by ROHM and HAAS, which is a methacrylic acid / ethyl acrylate / oxyalkylenated stearyl methacrylate terpolymer (INCI name Acrylates / Steareth-20 Methacrylate Copolymer), or ACULYN 28® sold by ROHM and HAAS, which is a methacrylic acid / ethyl acrylate / oxyalkylenated behenyl methacrylate terpolymer (INCI name Acrylates / Beheneth-25 Methacrylate Copolymer), as well as NOVETHIX L-10 POLYMER® sold by Lubrizol.

[0260] As anionic amphiphilic polymers with fatty chains, we can also mention the methacrylic acid / methyl acrylate / dimethylmetisopropenylben-zylisocyanate ethoxylated alcohol copolymer, notably marketed under the name VI-SCOPHOBE DB 1000 by the company AMERCHOL.

[0261] As anionic amphiphilic polymers with fatty chains, we can also mention those comprising at least one acrylic monomer with sulfonic group(s), in free form or partially or totally neutralized and comprising at least one hydrophobic part.

[0262] The hydrophobic part present in the polymers of the invention preferably comprises 8 to 22 carbon atoms, preferably 8 to 18 carbon atoms, and more particularly 12 to 18 carbon atoms.

[0263] Preferably, the sulfonic polymers according to the invention are neutralized partially or totally by a mineral base (sodium hydroxide, potassium hydroxide, ammonia) or an organic base such as mono-, di- or tri-ethanolamine, an ami-nomethylpropanediol, N-methylglucamine, basic amino acids such as arginine and lysine, and mixtures of these compounds.

[0264] The sulfonic amphiphilic polymers according to the invention generally have a number average molecular weight (Mn) ranging from 1000 to 20,000,000 g / mol, preferably ranging from 20,000 to 5,000,000, and preferably from 100,000 to 1,500,000 g / mol.

[0265] The sulfonic amphiphilic polymers according to the invention may be cross-linked or non-cross-linked. Preferably, cross-linked amphiphilic polymers are chosen.

[0266] When crosslinked, the crosslinking agents can be chosen from among the olefinic polyunsaturated compounds commonly used for crosslinking polymers obtained by radical polymerization.Examples include divi-nylbenzene, diallyl ether, dipropylene glycol diallylether, polyglycol diallylethers, triethylene glycol divinylether, hydroquinone diallyl ether, diacrylated di(meth)acrylate of ethylene glycol or tetraethylene glycol, trimethylol propane triacrylate, methylene bis-acrylamide, methylene bis-methacrylamide, triallylamine, triallylcyanurate, diallylmaleate, tetraallylethylenediamine, tetraallyloxyethane, trimethylolpropane diallylether, allyl (meth)acrylate, allylic ethers of sugar alcohols, or other allyl- or vinyl ethers of polyfunctional alcohols, as well as allylic esters of phosphoric acid derivatives. and / or vinylphosphonic, or mixtures of these compounds.

[0267] Methylene-bis-acrylamide, allyl methacrylate, or trimethylol propane triacrylate (TMPTA) will be used in particular. The degree of crosslinking generally varies from 0.01 to 10% by mol and more particularly from 0.2 to 2% by mol relative to the polymer.

[0268] Acrylic monomers with sulfonic group(s) are selected in particular from (meth)acrylamido(Cl-C22)alkylsulfonic acids, N-(Cl-C22)alkyl(meth)acrylamido(Cl-C22)alkylsulfonic acids such as undecyl-acrylamido-methane-sulfonic acid and their partially or totally neutralized forms.

[0269] More preferably, (meth)acrylamido(Cl-C22) alkylsulfonic acids such as, for example, acrylamido-methanesulfonic acid, acrylamido-ethanesulfonic acid, acrylamido-propanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, methacrylamido-2-methylpropanesulfonic acid, 2-acrylamido-n-butanesulfonic acid, 2-acrylamido-2,4,4-trimethylpentanesulfonic acid, 2-methacrylamido-dodecylsulfonic acid, 2-acrylamido-2,6-dimethyl-3-heptanesulfonic acid and their partially or totally neutralized forms will be used.

[0270] In particular, 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and its partially or totally neutralized forms will be used.

[0271] The amphiphilic polymers according to the invention may in particular be selected from statistical amphiphilic AMPS polymers modified by reaction with an n-monoalkylamine or a di-n-alkylamine at C6-C22, and such as those described in patent application WO00 / 31154 (forming an integral part of the content of the description). These polymers may also contain other hydrophilic ethylenically unsaturated monomers chosen for example from (meth)acrylic acids, their [3]-substituted alkyl derivatives or their esters obtained with monoalcohols or mono- or poly-alkylene glycols, (meth)acrylamides, vinylpyrrolidone, maleic anhydride, itaconic acid or maleic acid or mixtures of these compounds.

[0272] The preferred polymers of the invention are chosen from among the amphiphilic copolymers of AMPS and at least one hydrophobic monomer with ethylenic unsaturation comprising at least one hydrophobic part having from 8 to 50 carbon atoms and more preferably from 8 to 22 carbon atoms and even more preferably from 8 to 18 carbon atoms and more particularly 12 to 18 carbon atoms.

[0273] These same copolymers may further contain one or more ethylenically unsaturated monomers without a fatty chain such as (meth)acrylic acids, their [3]-substituted alkyl derivatives or their esters obtained with monoalcohols or mono- or poly-alkylene glycols, (meth)acrylamides, vinylpyrrolidone, maleic anhydride, itaconic acid or maleic acid or mixtures of these compounds.

[0274] The hydrophobic monomers with ethylenic unsaturation of these particular copolymers are preferably chosen from acrylates or acrylamides of the following formula (XIII): r, <Xm) —CH.j """""Q.......... O^C Y--------------------------------FL

[0275] in which Ri and R3, identical or different, denote a hydrogen atom or a linear or branched C1-C6 alkyl radical (preferably methyl); Y denotes O or NH; R2 denotes a hydrocarbon radical comprising at least 8 to 50 carbon atoms, preferably 8 to 22 carbon atoms, even better 6 to 18 carbon atoms and more particularly 12 to 18 carbon atoms; x denotes a number of moles of alkylene oxide and varies from 0 to 100.

[0276] The radical R2 is preferably chosen from linear C6-C18 alkyl radicals (e.g., n-hexyl, n-octyl, n-decyl, n-hexadecyl, n-dodecyl), branched or cyclic radicals (e.g., cyclododecane (C12) or adamantane (C10)); C6-C18 alkyl perfluorinated radicals (e.g., the formula group -(CH2)2-(CF2)9-CF3); the cholesteryl radical (C27) or a cholesterol ester remnant such as the cholesteryl oxyhexanoate group; aromatic polycyclic groups such as naphthalene or pyrene. Among these radicals, linear alkyl radicals, and particularly the n-dodecyl radical, are preferred.

[0277] According to a particularly preferred embodiment of the invention, the monomer of formula (XIII) comprises at least one alkylene oxide unit (x>l) and preferably a polyoxyalkylene chain. The polyoxyalkylene chain preferably consists of ethylene oxide units and / or propylene oxide units, and even more particularly of ethylene oxide units. The number of oxyalkylene units generally varies from 3 to 100, preferably from 3 to 50, and even more preferably from 7 to 25.

[0278] Among these polymers, we can mention:

[0279] - crosslinked or non-crosslinked copolymers, neutralized or not, comprising from 15 to 60% by weight of AMPS patterns and 40 to 85% by weight of patterns

[0280] (C8-C16)alkyl(meth)acrylamide or (C8-C16)alkyl(meth)acrylate motifs relative to the polymer, such as those described in application EP-A750 899;

[0281] - terpolymers comprising 10 to 90 mol% of acrylamide motifs, from 0.1 to 10% by mole of AMPS motifs and 5 to 80% by mole of

[0282] n-(C6-C18)alkylacrylamide motifs, such as those described in US patent 5089578.

[0283] We can also mention copolymers of totally neutralized AMPS and dodecyl methacrylate as well as copolymers of uncrosslinked and crosslinked AMPS and n-dodecylmethacrylamide, such as those described in the articles by Morishima cited above.

[0284] Special mention will be made of copolymers consisting of 2-acrylamido-2-methylpropanesulfonic acid (AMPS) motifs of the following formula (XIV): (XIV) CH, O':" NH..........ç—GH^SG / X* CH,

[0285] wherein X+ is a proton, an alkali metal cation, an alkaline earth cation, or the ammonium ion,

[0286] and the following formula (XV) motifs: R (XV) CH2 ç ......... o=ç O--------------kCH^CH^O H--R, : x

[0287] in which x denotes an integer ranging from 3 to 100, preferably from 5 to 80 and preferably from 7 to 25; RI has the same meaning as indicated above in formula (IV) and R4 denotes a linear or branched alkyl in C6-C22 and preferably in C10-C22.

[0288] Particularly preferred polymers are those for which x = 25, RI denotes methyl and R4 represents n-dodecyl; polymers for which X+ denotes sodium or ammonium are more particularly preferred.

[0289] The cationic associative thickening polymers according to the present invention can be selected from polyacrylates with amine side groups.

[0290] Polyacrylates with amine side groups, quaternized or not, possess for example hydrophobic groups of the type steareth-20 (stearyl alcohol with 20 moles of ethylene oxide) or alkyl(C10-C30)PEG-20 itaconate.

[0291] Examples of polyacrylates with amine side chains include polymers 8781-124B or 9492-103 or STRUCTURE PLUS from NATIONAL STARCH.

[0292] The amphoteric associative thickening polymers according to the invention can be selected from C10-C30 methacrylamidopropyl trimethylammonium chloride / acrylic acid / alkyl methacrylate copolymers, the alkyl radical preferably being a stearyl radical.

[0293] (b) Among the crosslinked homopolymers of (meth)acrylic acid, mention may be made of products sold under the names CARBOPOLS 980, 981, 954, 2984 and 5984 by the company GOODRICH or products sold under the names SYNTHALEN M and SYNTHALEN K by the company 3 VSA.

[0294] Among the crosslinked copolymers of (meth)acrylic acid and C1-C6 alkyl acrylate, examples include the product sold under the name VISCOATEX 538C by COATEX, which is a crosslinked copolymer of methacrylic acid and ethyl acrylate in aqueous dispersion with 38% active ingredient, and the product sold under the name ACULYN 33 by ROHM & HAAS, which is a crosslinked copolymer of acrylic acid and ethyl acrylate in aqueous dispersion with 28% active ingredient. Active. One can cite in particular the methacrylic acid / ethyl acrylate crosslinked copolymer in the form of a 30% aqueous dispersion manufactured and sold under the name CARBOPOL AQUA SF-1 by the company NOVEON.

[0295] (c) Among non-ionic homopolymers or copolymers containing Examples of ethylenic unsaturation monomers of the ester and / or amide type include products sold under the names CYAN AMER P250 by CYTEC (polyacrylamide); PMMA MBX-8C by US COSMETICS (methyl methacrylate / ethylene glycol dimethacrylate copolymer); ACRYLOID B 66 by RHOM & HAAS (butyl methacrylate / methyl methacrylate copolymer); BPA 500 by KOBO (polymethyl methacrylate).

[0296] (d) Among the ammonium acrylate homopolymers, the product sold may be mentioned under the name MICROSAP PAS 5193 by the company HOECHST.

[0297] Among the ammonium acrylate and acrylamide copolymers, we can mention the product sold under the name BOZEPOL C NEW or the product PAS 5193 sold by the company HOECHST.

[0298] (e) Homo- or copolymers of (meth)acrylamido-alkyl(Cl-C4)-sulfonic acids They are preferably cross-linked. More specifically, they are partially or totally neutralized. They are water-soluble or water-swellable polymers.

[0299] Among these polymers, we can mention in particular:

[0300] -polyacrylamido-methanesulfonic acid,

[0301] -polyacrylamido-ethanesulfonic acid,

[0302] -polyacrylamidopropanesulfonic acid,

[0303] -poly-2-acrylamido-2-methylpropanesulfonic acid,

[0304] -poly-2-methacrylamido-2-methylpropanesulfonic acid,

[0305] -poly-2-acrylamido-n-butane-sulfonic acid.

[0306] Polymers of this type and in particular crosslinked and partially or totally neutralized poly-2-acrylamido-2-methylpropane-sulfonic acids are known, described and prepared in patent application DE-19625810.

[0307] They are generally characterized by the fact that they comprise, distributed randomly:

[0308] - from 90 to 99.9% by weight of formula motifs (A): X\ • (A) I CH, O 'nh-—Ç— ​​CKSO. / x* CH,

[0309] in which X+ denotes a cation or a mixture of cations, including H+, and

[0310] - from 0.01 to 10% by weight of at least one crosslinking motif having at least two olefinic double bonds, the proportions by weight being defined in relation to the total weight of the polymer.

[0311] Preferably, cross-linked poly-2-acrylamido-2-methylpropanesulfonic acid and neutralized comprises 98 to 99.5% by weight of formula (A) motifs and 0.5 to 2% by weight of crosslinking motifs.

[0312] Preferably, X+ represents a cation or a mixture of cations selected in particular from a proton, an alkali metal cation, an equivalent cation of an alkaline earth metal or the ammonium ion.

[0313] Preferably, the crosslinking motifs having at least two olefinic double bonds are selected from dipropylene glycol diallylether, polyglycol diallylethers, triethylene glycol divinlether, hydroquinone diallyl ether, tetra-allyl oxyethane or other allyl- or vinyl ethers of polyfunctional alcohols, tetraethylene glycol diacrylate, triallylamine, trimethylolpropane diallylether, methylene bis-acrylamide or divinylbenzene.

[0314] Crosslinking motifs having at least two olefinic double bonds are more particularly chosen from those of the following general formula (B): r 1 (B) I .0. I H,C < 'CH;-------------Q—CH. CH:, io I L.J 3

[0315] in which Ri designates a hydrogen atom or a C1-C4 alkyl and more particularly methyl (trimethylol propane triacrylate).

[0316] Crosslinked and partially or totally neutralized poly-2-acrylamido-2-methylpropanesulfonic acids are generally known as "Ammonium Polycrylamido-2-methylpropanesulfonate" or "Ammonium Polyacryldimethyl-tauramide" (INCI name).

[0317] A particularly preferred product according to the invention is that sold by the company CLARIANT under the trade name HOSTACERIN AMPS; it is a cross-linked poly-2-acrylamido-2-methylpropane sulfonic acid partially neutralized by ammonia.

[0318] (f) Among the crosslinked homo- or co-polymers of methacryloyloxyalkyl(Cl-C4) Examples of trialkyl(Cl-C4)ammonium polymers include those obtained by homopolymerization of quaternized dimethylaminoethyl methacrylate with methyl chloride, or by copolymerization of acrylamide with dimethylaminoethyl methacrylate. Quatemized by methyl chloride, the homo- or copolymerization is followed by crosslinking with an olefinically unsaturated compound, particularly methylene-bis-acrylamide. A prime example is the crosslinked acrylamide / methacryloyloxyethyl trimethylammonium chloride copolymer (notably 20 / 80 by weight), particularly in the form of a dispersion containing 50% by weight of said copolymer in mineral oil. This dispersion is notably marketed under the name SALCARE® SC 92 by CIBA. Another example is the crosslinked rhomopolymer of methacryloyloxyethyl trimethylammonium chloride, particularly in the form of a dispersion containing approximately 50% by weight of the rhomopolymer in mineral oil or in a liquid ester. These dispersions are marketed under the names SALCARE® SC 95 and SALCARE® SC 96 by CIBA. Such polymers are designated INCI Polyquaternium-37.

[0319] Among the acrylic thickening polymers that can be used in the present invention, preferably one or more acrylic thickening polymers of family a) will be used, more preferably chosen from anionic (meth)acrylic associative thickening polymers.

[0320] As previously stated, the thickening polymers according to the invention can be selected from thickening polysaccharides.

[0321] The thickening polysaccharides according to the invention may be of natural or synthetic origin. They may be non-ionic, anionic, amphoteric or cationic.

[0322] The basic units of the polysaccharides of the invention may be mono- or di-saccharides. The motifs that may be included in the composition of the polysaccharides of the invention are preferably derived from the following sugars: glucose, galactose, arabinose, rhamnose, mannose, xylose, fucose, fructose, anhydrogalactose.

[0323] The following polymers, as well as their derivatives, may be cited in particular as thickening polysaccharides that could be used:

[0324] - guar gum (polymer of mannose and galactose)

[0325] - locust bean gum (polymer of mannose and galactose)

[0326] - fenugreek gum (polymer of mannose and galactose)

[0327] - tamarind gum (polymer of galactose, xylose and glucose)

[0328] - konjac gum (glucose and mannose polymer),

[0329] - scleroglucan gum (glucose polymer),

[0330] - cellulose (glucose polymer)

[0331] - starch (polymer of glucose)

[0332] - inulin (polymer of fructose and glucose).

[0333] These polymers can be modified physically or chemically. Physical treatment includes, in particular, temperature. Treatments Chemical reactions include esterification, etherification, amidation, and oxidation. These treatments lead to polymers that can be non-ionic, cationic, or amphoteric.

[0334] The nonionic guar gums usable according to the invention can be modified by C1-C6 hydroxylakyl groups. Among the hydroxyalkyl groups, mention may be made of hydroxymethyl, hydroxyethyl, hydroxypropyl, and hydroxybutyl groups. These guar gums are well known in the prior art and can, for example, be prepared by reacting corresponding alkene oxides, such as propylene oxides, with guar gum, so as to obtain guar gum modified by hydroxypropyl groups. The degree of hydroxyalkylation preferably varies from 0.4 to 1.2 and corresponds to the number of alkylene oxide molecules consumed per number of free hydroxyl groups present on the guar gum.Such non-ionic guar gums, possibly modified by hydroxyalkyl groups, are for example sold under the trade names JAGUAR HP8, JAGUAR HP60 and JAGUAR HP120 by the company RHODIA CHIMIE.

[0335] Guar gums modified with cationic groups, particularly those usable according to the invention, are guar gums comprising trialkylammonium cationic groups. Preferably, 2 to 30% by number of the hydroxyl groups of these guar gums bear trialkylammonium cationic groups. Even more preferably, 5 to 20% of the hydroxyl groups of these guar gums are branched by trialkylammonium cationic groups. Among these trialkylammonium groups, trimethylammonium and triethylammonium groups are particularly noteworthy. Even more preferably, these groups represent 5 to 20% by weight relative to the total weight of the modified guar gum. According to the invention, guar gums modified with 2,3-epoxypropyl trimethylammonium chloride can be used.These guar gums modified by cationic groups are products already known in themselves and are described for example in US patents 3,589,578 and 4,013,130. Such products are sold in particular under the trade names JAGUAR C13 S, JAGUAR C 15, JAGUAR C 17 by the company RHODIA CHIMIE.

[0336] As a modified locust bean gum, cationic locust bean gum containing hydroxypropyltrimmonium groups such as Catinal CLB 200 offered by the TOHO company can be used.

[0337] The starch molecules used in the present invention may originate from any plant source of starch, in particular cereals and tubers; more specifically, they may be starches from maize, rice, cassava, barley, Potato, wheat, sorghum, pea, oat, and tapioca starches can be used. Hydrolysates of the starches listed above or other starch derivatives may also be used. The starch is preferably derived from potato. Starches can be modified chemically or physically, notably by one or more of the following reactions: pregelatinization, oxidation, crosslinking, esterification, etherification, amidation, and heat treatments.

[0338] More specifically, these reactions can be carried out in the following way:

[0339] - pregelatinization by bursting the starch granules (for example, drying and cooking in a drum dryer);

[0340] - oxidation by strong oxidants leading to the introduction of carboxyl groups in the starch molecule and to the depolymerization of the starch molecule (for example by treating an aqueous solution of starch with sodium hypochlorite);

[0341] - crosslinking by functional agents capable of reacting with groups hydroxyl groups of starch molecules which will thus be linked together (for example with glyceryl and / or phosphate groups);

[0342] - esterification in alkaline medium for the grafting of functional groups, in particular acyl in C1-C6 (acetyl), hydroxyalkyl in C1-C6 (hydroxyethyl, hydroxypropyl), carboxymethyl, octenylsuccinic.

[0343] Among starch derivatives, dextrins can be notably mentioned.

[0344] According to the invention, amphoteric starches comprising one or more anionic groups and one or more cationic groups can also be used. The anionic and cationic groups may be linked to the same reactive site of the starch molecule or to different reactive sites; preferably, they are linked to the same reactive site. The anionic groups may be of the carboxylic, phosphate, or sulfate type, and preferably carboxylic. The cationic groups may be of the primary, secondary, tertiary, or quaternary amine type.

[0345] Amphoteric starches are in particular selected from compounds with the following formulas: R' R II HC C —COOM / H St-O-(CH2VNxH H C--C—COOM (la) I 1 R' R St—O (Ilia) R's R" n' I St-OC---c—COOM h2 h R\ RK (IVa) n St-OC--C--COOM H H2

[0346] in which:

[0347] St-0 represents a starch molecule,

[0348] R, identical or different, represents a hydrogen atom or a methyl radical,

[0349] R', identical or different, represents a hydrogen atom, a methyl radical or a -COOH group,

[0350] n is an integer equal to 2 or 3,

[0351] M, identical or different, designates a hydrogen atom, an alkali or alkali-noterrous metal such as Na, K, Li, NH4, a quaternary ammonium or an organic amine,

[0352] R" represents a hydrogen atom or a C1-C18 alkyl radical.

[0353] Starches of formulas (lia) or (Ilia) are particularly used; and preferentially 2-chloroethylaminodipropionic acid modified starches, i.e. starches of formula (lia) or (Ilia) in which R, R', R" and M represent a hydrogen atom and n is equal to 2. The preferred amphoteric starch is a starch chloroethylamido dipropionate.

[0354] Cellulose and cellulose derivatives can be cationic, amphoteric, or nonionic. Among these derivatives, cellulose ethers, cellulose esters, and cellulose ether esters may be mentioned.

[0355] Among the nonionic cellulose ethers, examples include alkylcelluloses such as methylcelluloses and ethylcelluloses (for example, Ethocel Standard 100 Premium from DOW CHEMICAL); hydroxyalkylcelluloses such as hydroxymethylcelluloses, hydroxyethylcelluloses (for example, Natrosol 250 HHR offered by AQUALON) and hydroxypropylcelluloses (for example, Klucel EF from AQUALON); mixed hydroxyalkyl-alkylcelluloses such as hydroxypropylmethylcelluloses (for example, Methocel E4M from DOW CHEMICAL), hydroxyethylmethylcelluloses, hydroxyethylethylcelluloses (for example, Bermocoll E 481 FQ from AKZO NOBEL) and hydroxybutylmethylcelluloses.

[0356] Among cationic cellulose ethers, crosslinked or non-crosslinked quaternized hydroxyethylcelluloses may be mentioned. The quaternizing agent may be, in particular, diallyldimethylammonium chloride (for example, Celquat L200 from NATIONAL STARCH). Another cationic cellulose ether is hydroxyethylcellulose hydroxypropyltrimethylammonium (for example, Ucare polymer JR 400 from AMERCHOL).

[0357] Thickening polysaccharides can be associative. Examples include celluloses or their derivatives, modified by groups comprising at least one fatty chain such as alkyl, arylalkyl, alkylaryl groups or mixtures thereof where the alkyl groups are in C8-C22; non-ionic alkylhydroxyethylcelluloses such as the products NATROSOL PLUS GRADE 330 CS and POLYSURF 67 (alkyl in Cl6) sold by the company AQUALON; quaternized (cationic) alkylhydroxyethylcelluloses such as QUATRISOFT LM 200, QUATRISOFT LM-X 529-18-A, QUATRISOFT LM-X 529-18-B (C12 alkyl) and QUATRISOFT LM-X 529-8 (Cl8 alkyl) sold by AMERCHOL, CRODACEL QM, CRODACEL QL (C12 alkyl) and CRODACEL QS (C18 alkyl) sold by CRODA and SOFTCAT SL 100 sold by AMERCHOL; non-ionic nonoxynylhydroxyethylcelluloses such as AMERCELL HM-1500 sold by AMERCHOL;non-ionic alkylcelluloses such as the product BERMOCOLL EHM 100 sold by the company BEROL NOBEL. ;

[0358] Examples of associative thickening polysaccharides derived from guar include hydroxypropylguars modified by a fatty chain such as the product ESAFLOR HM 22 (modified by an alkyl chain at C22) sold by the company LAMBERTI; the product MIRACARE XC 95-3 (modified by an alkyl chain at C14) and the product RE 205-146 (modified by an alkyl chain at C20) sold by RHODIA CHIMIE.

[0359] Among thickening polysaccharides, non-ionic polysaccharides will preferably be used, in particular those chosen from celluloses and their derivatives, preferably from non-ionic cellulose ethers.

[0360] Preferably, the thickening polymers according to the invention are chosen from, alone or in mixture, non-ionic polysaccharides, in particular chosen from celluloses and their derivatives, anionic associative (meth)acrylic thickening polymers.

[0361] When the composition includes one or more thickening polymer(s), the total content of the thickening polymer(s) varies preferably from 0.01 to 15% by weight, more preferably from 0.05 to 10% by weight, better from 0.1 to 8% by weight, even better from 0.2 to 5% by weight, or even from 0.3 to 3% by weight, relative to the total weight of the composition. Seizuring agent

[0362] The composition according to the invention may include one or more sequestering (or chelating) agent(s).

[0363] Preferably, the composition according to the invention comprises one or more sequestering agent(s).

[0364] The definition of a "sequestering agent" (or "chelating agent") is well known to those skilled in the art and refers to a compound or mixture of compounds capable of forming a chelate with a metal ion. A chelate is an inorganic complex in which a compound (the sequestering or chelating agent) is coordinated to a metal ion, that is, it forms one or more bonds with the metal ion (forming a ring including the metal ion).

[0365] A sequestering (or chelating) agent generally comprises at least two electron-donating atoms which enable the formation of bonds with the metal ion.

[0366] Within the framework of the present invention, the sequestering agent(s) may be chosen from carboxylic acids, preferably aminocarboxylic acids, phosphonic acids, preferably aminophosphonic acids, polyphosphoric acids, preferably linear polyphosphoric acids, their salts and derivatives.

[0367] The salts include, in particular, salts of alkali metals, alkaline earths, ammonium and substituted ammonium.

[0368] By way of example of a carboxylic acid-based sequestrant, the following compounds may be cited: diethylenetriamine pentaacetic acid (DTPA), ethylenediamine disuccinic acid (EDDS) and trisodium ethylenediamine disuccinate such as Octaquest E30 from OCTEL, ethylenediaminetetraacetic acid (EDTA), and its salts such as disodium EDTA, tetrasodium EDTA, ethylenediamine-N,N'-diglutaric acid (EDDG), gly-cinamide-N,N'-disuccinic acid (GADS), glycinamide-N,N'-disuccinic acid (GADS), 2-hydroxypropylenediamine-N,N'-disuccinic acid (HPDDS), ethylenediamine-N-N'-bis(ortho-hydroxyphenyl acetic acid) (EDDHA), the N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid (HBED), nitrilotriacetic acid (NTA), methylglycine diacetic acid (MGDA), N-2-hydroxyethyl N,N diacetic acid and glyceryl imino diacetic acid (as described in documents EP-A-317,542 and EP-A-399,133),iminodiacetic acid-N-2-hydroxypropyl sulfonic acid and aspartic acid N-carboxymethyl N-2-hydroxypropyl-3-sulfonic acid (as described in EP-A-516,102), beta-alanine-N,N'-diacetic acid, aspartic acid-N,N'-diacetic acid, aspartic acid-N-monoacetic acid (described in EP-A-509,382), iminodisuccinic acid-based chelators (IDSA) (as described in EP-A-509,382), ethanoldiglycine acid, phosphonobutane tricarboxylic acid such as the compound marketed by Bayer under the reference Bayhibit AM, N,N-dicarboxymethyl acid, glutamic acid and its salts such as tetrasodium glutamate diacetate (GLDA) such as Dissolvine GL38 or 45S from Akzo Nobel.

[0369] Examples of mono- or polyphosphonic acid-based chelating agents include the following compounds: diethylenetriamine-penta(methylene phosphonic acid) (DTPMP), ethane-1-hydroxy-1,1,2-triphosphonic acid (E1HTP), ethane-2-hydroxy-1,1,2-triphosphonic acid (E2HTP), ethane-1-hydroxy-1,1-triphosphonic acid (EHDP), ethan-1,1,2-triphosphonic acid (ETP), ethylenediaminetetramethylene phosphonic acid (EDTMP), hydroxyethane-1,1-diphosphonic acid (HEDP, or etidronic acid), and salts such as disodium etidronate and tetrasodium etidronate.

[0370] Examples of polyphosphoric acid-based chelating agents include the following compounds: sodium tripolyphosphate (STP), tetrasodium diphosphate, hexa-metaphophoric acid, sodium metaphosphate, phytic acid.

[0371] According to one embodiment, the useful sequestering agent(s) according to the invention are phosphorus-based sequestering agents, that is to say, sequestering agents which comprise one or more phosphorus atoms, preferably at least two phosphorus atoms.

[0372] The phosphorus-containing sequestering agent(s) used in the composition according to the invention are preferably chosen from:

[0373] - inorganic phosphorus derivatives preferably selected from phosphates and alkali or alkaline earth metal pyrophosphates, preferably of alkali metals such as sodium pyrophosphate, potassium pyrophosphate, sodium pyrophosphate decahydrate; and alkali or alkaline earth metal polyphosphates, preferably of alkali metals, such as sodium hexametaphosphate, sodium polyphosphate, sodium tripolyphosphate, sodium trimetaphosphate; optionally hydrated, and mixtures thereof;

[0374] - organic phosphorus derivatives, such as (poly)phosphates and organic (poly)phosphonates, such as etidronic acid and / or its alkali or alkaline earth metal salts such as tetrasodium etidronate, disodium etidronate and their mixtures.

[0375] Preferably, the phosphorus-containing sequestering agent(s) is / are chosen from linear or cyclic compounds comprising at least two phosphorus atoms covalently linked together by at least one linker L comprising at least one oxygen atom and / or at least one carbon atom.

[0376] The phosphorus-containing sequestering agent(s) may be selected from inorganic phosphorus derivatives, preferably comprising at least two phosphorus atoms. More preferably, the phosphorus-containing sequestering agent(s) is / are selected from alkali metal or alkaline earth pyrophosphates, preferably from alkali metal pyrophosphates, in particular the pyrophosphate of sodium (also called tetrasodium pyrophosphate).

[0377] The phosphorus-containing sequestering agent(s) may be selected from organic phosphorus derivatives, preferably comprising at least 2 phosphorus atoms. More preferably, the phosphorus-containing sequestering agent(s) is / are selected from etidronic acid (also called 1-hydroxyethane 1,1-diphosphonic acid) and / or its alkali or alkaline earth metal salts, preferably alkali metals such as tetrasodium etidronate and disodium etidronate.

[0378] Thus, preferably, the phosphorus-containing sequestering agent(s) are chosen from alkali metal pyrophosphates, etidronic acid and / or its alkali metal salts, and a mixture of these compounds.

[0379] In a particularly preferred manner, the phosphorus-containing sequestering agent(s) are selected from tetrasodium etidronate, disodium etidronate, etidronic acid, tetrasodium pyrophosphate and a mixture of these compounds.

[0380] According to the present invention, the sequestering agents are preferably chosen from diethylenetriamine pentaacetic acid (DTPA) and its salts, diethylenediamine tetraacetic acid (EDTA) and its salts, ethylenediamine disuccinic acid (EDDS) and its salts, etidronic acid and its salts, N,N-dicarboxymethyl glutamic acid and its salts, N,N-dicarboxymethyl glutamic acid and its salts (GLDA) and mixtures thereof.

[0381] Among the salts of these compounds, alkali metal salts are preferred, and in particular sodium or potassium salts.

[0382] When the composition includes one or more sequestrants, the total content of the sequestrant(s) preferably ranges from 0.001 to 15% by weight, more preferably from 0.05 to 10% by weight, better from 0.01 to 8% by weight, even better from 0.05 to 5% by weight relative to the total weight of the composition. Alkaline agent

[0383] The composition according to the present invention may comprise one or more alkali, mineral, organic or hybrid agent(s).

[0384] Preferably, the composition according to the invention comprises one or more alkali agent(s).

[0385] Alkaline agents are different from the amino acid type compound(s) previously described.

[0386] For the purposes of the present invention, the terms "alkaline agent" and "alkalinizing agent" are used interchangeably.

[0387] The mineral alkalizing agent(s) are preferably chosen from ammonia, alkali carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonate, alkali or alkaline earth metal phosphates such as sodium phosphates or potassium phosphates, sodium or potassium hydroxides, silicates or metasilicates of alkali or alkaline earth metals such as sodium metasilicate and their mixtures.

[0388] The organic alkalizing agent(s) are preferably chosen from alkanolamines, organic amines other than alkanolamines, oxyethylenated and / or oxypropylenated ethylenediamines, 1,3-diaminopropane, spermine, spermidine and mixtures thereof.

[0389] Alkanolamine means an organic amine comprising a primary, secondary or tertiary amine function, and one or more linear or branched alkyl groups, in C1-C8 bearing one or more hydroxyl radicals.

[0390] Organic amines selected from among alkanolamines such as mono-, di- or tri-alkanolamines, comprising one to three hydroxyalkyl radicals, identical or not, in C1-C4, are particularly suitable for carrying out the invention.

[0391] In particular, the alkanolamine(s) are chosen from monoethanolamine (MEA), diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, N,N-dimethylethanolamine, 2-amino-2-methyl-l-propanol, triisopropanolamine, 2-amino-2-methyl-l,3-propanediol, 3-amino-l,2-propanediol, 3-dimethylamino-l,2-propanediol, tris-hydroxymethylaminomethane and mixtures thereof.

[0392] The organic amine may also be chosen from among heterocyclic organic amines. In particular, histidine, pyridine, piperidine, imidazole, triazole, tetrazole, and benzimidazole may be mentioned. The organic amine may also be chosen from amino acid dipeptides. Carnosine, anserine, and balenine are examples of amino acid dipeptides that can be used in the present invention. The organic amine may also be chosen from compounds containing a guanidine functional group. Examples of amines of this type other than arginine that can be used in the present invention include creatine, creatinine, 1,1-dimethylguanidine, 1,1-diethylguanidine, glycocyamine, metformin, agmatine, n-amidinoalanine, 3-guanidinopropionic acid, 4-guanidinobutyric acid and 2-([amino(imino)methyl]amino)ethane-l-sulfonic acid.)

[0393] As hybrid compounds, guanidine carbonate or monoethanolamine hydrochloride may be used in particular.

[0394] The useful alkali agent(s) according to the invention is / are preferably chosen from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine; ammonia; carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonates; alkali or alkaline earth metal silicates or metasilicates such as sodium silicate and sodium metasilicate and mixtures thereof, more preferably from metal silicates or metasilicates alkali or alkaline earths, such as sodium silicate and metasilicate and their mixtures.

[0395] In a particular embodiment, the composition according to the invention is free of ammonia.

[0396] When it includes them, the composition according to the invention comprises one or more alkali agents in a total content ranging from 0.1 to 50% by weight, more preferably from 1 to 40% by weight, better from 5 to 35% by weight, even better from 10 to 30% by weight relative to the total weight of the composition.

[0397] According to a particular embodiment, the composition according to the invention comprises at least one (meta)silicate. According to this embodiment, the total content of alkali or alkaline earth metal silicate(s) or metasilicate(s), preferably sodium metasilicate, is preferably from 0.1 to 50% by weight, more preferably from 1 to 40% by weight, better from 5 to 35% by weight, even better from 10 to 30% by weight, relative to the total weight of the composition. Solvent

[0398] The composition according to the invention may also include at least one organic solvent.

[0399] Examples of organic solvents include linear or branched C2-C4 alkanols such as ethanol and isopropanol; polyols and polyol ethers such as glycerol, 2-butoxyethanol, propylene glycol, dipropylene glycol, propane-1,3-diol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether and monomethyl ether, as well as aromatic alcohols or ethers such as benzyl alcohol or phenoxyethanol, and mixtures thereof.

[0400] When the composition includes one or more organic solvents, the total content of the organic solvent(s) shall preferably be from 0.01 to 20% by weight, preferably from 0.05 to 15% by weight, preferably from 0.1 to 10% by weight relative to the total weight of the composition.

[0401] Preferably, the composition according to the invention is anhydrous. By anhydrous composition is meant a composition that contains little or no water, in particular less than 0.5% water, better less than 0.1% water, even better less than 0.05%, or even less than 0.01% water, by weight of the total composition. In particular, the composition does not include any water added during its preparation; any water present may be supplied by the raw materials used during its preparation. Additives

[0402] The composition according to the invention may optionally comprise one or more additives, different from the compounds of the invention, and among which the following may be mentioned: polymers, other than thickening polymers, anionic, non-ionic, amphoteric, cationic or mixtures thereof, mineral thickening agents, anti-dandruff agents, anti-seborrheic agents, anti-hair loss and / or regrowth agents, vitamins and pro-vitamins including panthenol, sunscreens, mineral or organic pigments, plasticizers, solubilizers, opacifying or pearlescent agents, antioxidants, perfumes, preservatives.

[0403] Of course, a person skilled in the art will take care to choose this or these possible complementary compounds in such a way that the advantageous properties intrinsically attached to the composition according to the invention are not, or substantially not, altered by the envisaged addition(s).

[0404] The above additives may generally be present in quantities of each of them between 0 and 20% by weight, relative to the total weight of the composition.

[0405] As previously stated, the composition according to the invention is free of hydrogen peroxide.

[0406] By hydrogen peroxide-free, it is understood that the composition according to the invention does not contain (0%) hydrogen peroxide.

[0407] Preferably, the composition according to the invention is free from chemical oxidizing agents other than the peroxygenated salts described above.

[0408] The composition according to the invention is preferably intended to be mixed with a composition comprising hydrogen peroxide.

[0409] Before mixing with a composition comprising hydrogen peroxide, the composition according to the invention is preferably in the form of a cream.

[0410] Preferably, the composition according to the invention, before mixing with a composition comprising hydrogen peroxide, has a viscosity greater than or equal to 100 poises (100 Pa.s), preferably greater than or equal to 130 poises (130 Pa.s), preferably still between 130 and 250 poises (130 and 250 Pa.s), measured at 25°C and at a shear rate of 1 s⁻¹; this viscosity being able to be determined by means of a Thermo Haake RS600 rotary rheometer, equipped with a 0.35 mm plane-plane geometry with a 1 mm air gap. Method

[0411] The present invention also relates to a method for lightening keratin fibers, preferably human, in particular hair.

[0412] The method according to the invention comprises: (i) a step of mixing a composition A according to the invention as described above with a composition B comprising hydrogen peroxide, (ii) an application step on said keratin fibers of the composition resulting from the mixture obtained in step (i).

[0413] The composition resulting from the mixture in step (i) is called the ready-to-use composition.

[0414] This ready-to-use composition may include one or more of the ingredients described above. This ready-to-use composition may also include water, in particular from the composition containing hydrogen peroxide.

[0415] Preferably, the ready-to-use composition is also in the form of a cream.

[0416] Preferably, the pH of the ready-to-use composition is from 8 to 13, preferably from 9 to 12.

[0417] The ready-to-use composition can be applied to dry or wet keratin fibers. After treatment, the keratin fibers may be rinsed with water, or optionally washed with shampoo followed by rinsing with water, before being dried or left to dry.

[0418] This mixing step is preferably carried out at the time of use, just before applying the composition resulting from the mixture to the hair.

[0419] Preferably, compositions A and B are mixed in a weight ratio A / B of 0.1 to 2, preferably 0.3 to 1.5, better 0.5 to 1.

[0420] Preferably, composition B comprises hydrogen peroxide in a content ranging from 0.1 to 50%, more particularly from 0.5 to 20%, and even more preferably from 1 to 15% by weight relative to the weight of composition B.

[0421] Composition B is preferably an aqueous composition. In particular, it comprises more than 10% by weight of water, preferably more than 30% by weight of water, and even more advantageously more than 50% by weight of water.

[0422] It may also include one or more organic solvents selected from those listed above; the latter representing more particularly, when present, from 0.1 to 30% by weight relative to the weight of the oxidizing composition, and preferably from 0.3 to 20% by weight.

[0423] Composition B also preferably comprises one or more acidifying agents. Examples of acidifying agents include mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, tartaric acid, citric acid, lactic acid, and sulfonic acids.

[0424] Composition B preferably comprises one or more fats such as those described above, preferably selected from fatty alcohols, liquid hydrocarbons comprising more than 16 carbon atoms and mixtures thereof.

[0425] Composition B may also include surfactants and polymers thickeners.

[0426] Usually, the pH of composition B, when aqueous, is less than 7, preferably between 1 and 5, preferably between 1.5 and 4.5. Kit

[0427] Another object of the invention is a device with at least two compartments for lightening keratin fibers, comprising at least a first compartment containing a composition A as described above and at least a second compartment containing a composition B comprising hydrogen peroxide as described above.

[0428] The compositions of the device according to the invention are packaged in separate compartments, accompanied, optionally, by suitable application means, identical or different, such as brushes, sponges or brushes.

[0429] The device mentioned above can also be equipped with a means for delivering the desired mixture onto the hair, for example such as the devices described in patent FR 2586913.

[0430] The present invention finally relates to the use of a composition according to the invention as described above for the lightening of keratin fibers, and in particular of hair.

[0431] The following examples serve to illustrate the invention without, however, being limiting in nature. Examples

[0432] In the following examples, all quantities are given as mass percentage of active material (AM) relative to the total weight of the composition (unless otherwise stated). Compositions Al, A2

[0433] Composition A1 according to the invention and the comparative composition A2 were prepared from the ingredients whose contents are indicated in the table below:

[0434] [Tables 1] Al A2 POTASSIUM PERSULFATE 24.48 24.48 AMMONIUM PERSULFATE 10 10 SODIUM SILICATE 18 18 SODIUM METASILICATE 5 5 SODIUM STEARATE 4.72 4.72 HYDROXYETHYLCELLULOSE 0.75 0.75 ACRYLATES / C10-30 ALKYL ACRYLATE CROSSPOLYMER 0.75 0.75 SODIUM LAURYL SULFATE 1 1 DISODIUM EDTA 0.5 0.5 CITRIC ACID 3.3 3.3 GLYCINE 0.6 0.6 MINERAL OIL / PARAFFINUM LIQUIDUM 29 8 GLYCERYL STEARATE 0.01 0.01 POLYETHYLENE 1.89 1.89 Water - Qs 100 Composition B

[0435] Composition B was prepared from the ingredients whose contents are indicated in the table below:

[0436] [Tables2] B TETRASODIUM PYROPHOSPHATE 0.04 SODIUM SALICYLATE 0.035 ACRYLATES / BEHENETH-25 ME THACRYLATE COPOLYMER 0.4 CETEARETH-33 2 HYDROGEN PEROXIDE 9 CETEARYL ALCOHOL 8 TETRASODIUM ETIDRONATE 0.06 PHOSPHORIC ACID Qs pH 3 + / - 0.2 WATER / AQUA Qs 100

[0437] At the time of use, compositions Al and A2 were respectively mixed with composition B in the weight ratio 1+1.5, to obtain mixtures Ml and M2.

[0438] Composition A1 is a homogeneous cream which mixes very quickly with composition B to obtain mixture M1 in the form of a homogeneous cream.

[0439] Composition A2 is a sandy powder, and the mixing time of composition A2 with composition B is much longer. Furthermore, the resulting mixture M2 is more fluid than mixture M1, and is more fluid, which may lead to a risk of dripping during application to the head.

[0440] Each of the mixtures M1 and M2 was then applied to a strand of natural brown hair (level 4) at a rate of 10g of mixture for 1g of hair strand.

[0441] Mixture M1 is easier to apply than mixture M2.

[0442] After a processing time of 50 minutes at 33°C, the strands were rinsed, then washed and dried at 60°C in an oven.

[0443] The Ml mixture did not dry on the strands during the application time. Colorimetric measurements

[0444] Hair lightening is evaluated in the L*a*b* system, with a KONICA MINOLTA CM-3600A spectro-colorimeter (illuminant D65, angle 10°, specular component included) in the CIELab system.

[0445] In this system, L* represents brightness, a* represents the red / green axis and b* the yellow / blue axis.

[0446] The level of lightening is represented by the color difference AE between the strands of natural hair before treatment and lightened hair strands, AE being obtained from the formula:

[0447] in which L* represents the intensity, a* and b*, the chromaticity of natural hair and Lq* represents the intensity and a0* and b0* the chromaticity of lightened hair.

[0448] The higher the AE value, the lighter the hair. Results

[0449] [Tables3] L ab AE Control before treatment 19.15 2.06 2.44 - Ml 60.73 10.53 33.2 52.41 M2 50.16 12.17 29.91 42.64

[0450] Mixture M1 leads to better hair lightening than mixture M2.

[0451] The Ml mixture was also applied to curly and very curly hair. The performance was very good, particularly in terms of distribution throughout the hair, with curls remaining well-defined after treatment. Very good lightening performance and excellent cosmetic results were achieved. The treated hair was easy to detangle and remained soft and shiny, even after three weeks.

Claims

Claims

1. Composition comprising: - one or more peroxygenated salts; - one or more fatty substances in a total content greater than 10% by weight relative to the total weight of the composition; - one or more amino acid type compound(s); - citric acid and / or one of its salts; - the composition being free from hydrogen peroxide.

2. Composition according to the preceding claim in which the peroxygenated salt(s) are chosen from alkali metal persulfates, alkaline earth metal persulfates, ammonium persulfates, and mixtures thereof; more preferably from (bis)tetrabutylammonium persulfate, barium persulfate, magnesium persulfate, calcium persulfate, sodium persulfate, potassium persulfate, ammonium persulfate, and mixtures thereof; even more preferably from sodium persulfate, potassium persulfate, ammonium persulfate, and mixtures thereof; even better from potassium persulfate, ammonium persulfate, and mixtures thereof.

3. Composition according to any one of the preceding claims, in which the total content of peroxygenated salt(s) ranges from 1 to 60% by weight, preferably from 5 to 55% by weight, more preferably from 10 to 50% by weight, and even more preferably from 20 to 45% by weight, better still from 30 to 40% by weight, relative to the total weight of the composition.

4. Composition according to any one of the preceding claims in which the fatty substance(s) are chosen from liquid fatty substances, solid fatty substances and mixtures thereof.

5. Composition according to any one of the preceding claims which comprises at least one liquid fatty substance, preferably chosen from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils, liquid fatty alcohols and liquid fatty esters, silicone oils and mixtures thereof, preferentially from liquid hydrocarbons comprising more than 16 carbon atoms, in particular vaseline oil, liquid fatty alcohols, and mixtures thereof, better still from liquid hydrocarbons comprising more than 16 carbon atoms, in particular vaseline oil. ^Claim 6] Composition according to any one of the preceding claims which comprises at least one solid fatty substance, preferably chosen from solid fatty acids, solid fatty alcohols, solid esters of fatty acids and / or fatty alcohols, waxes, ceramides, and mixtures thereof, preferentially from solid fatty acids, solid fatty alcohols, waxes and mixtures thereof. ^Claim 7] Composition according to any one of the preceding claims, in which the total fatty substance content ranges from 10.5 to 60% by weight, preferably from 12 to 50% by weight, preferentially from 15 to 40% by weight, better still from 20 to 35% by weight, even better still from 25 to 35% by weight relative to the total weight of the composition. ^Claim 8] Composition according to any one of the preceding claims in which the amino acid compound(s) are chosen from the compounds of formula (I), their salts and their mixtures: cooh (I) H........C ........N(Hjp R Formula (I) in which: ■ p is an integer equal to 1 or 2; ■ when p = 1, R forms with the nitrogen atom a saturated heterocycle comprising from 5 to 8 members, preferably 5 members, this cycle possibly being substituted by at least one group chosen from hydroxyl or (Cl-C4)alkyl; ■ when p = 2, R represents: - a hydrogen atom; or - a (Cl-C12)alkyl group, preferably a (Cl-C4)alkyl group, interrupted by at least one heteroatom or group chosen from -S-, -NH- or -C(NH)- and / or substituted by at least one group chosen from hydroxyl, amino or -NH-C(NH)-NH2.^Claim 9] Composition according to the preceding claim in which the amino acid compound(s) are chosen from glycine, proline, methionine, serine, arginine, lysine, their salts and their mixtures, preferably from glycine, proline, methionine, serine, their salts and their mixtures, more preferably from glycine, its salts and their mixtures, even more preferably the amino acid is glycine.

10. Composition according to any one of the preceding claims, comprising said amino acid compound(s) in a total amount ranging from 0.01% to 5% by weight, preferably from 0.05 to 4% by weight, more preferably from 0.1 to 3% by weight, better still from 0.2 to 2% by weight relative to the total weight of the composition.

11. Composition according to one of the preceding claims in which the total content of citric acid and / or one of its salts ranges from 0.01 to 10% by weight, better still from 0.1% to 8% by weight, and even better still from 0.3 to 7% by weight, preferably from 0.5 to 6% by weight, more preferably from 1 to 5% by weight relative to the total weight of the composition.

12. Composition according to any one of the preceding claims which comprises an alkaline agent, preferably chosen from ammonia, alkali carbonates or bicarbonates such as sodium (hydrogen)carbonate and potassium (hydrogen)carbonate, alkali or alkaline earth metal phosphates such as sodium phosphates or potassium phosphates, sodium or potassium hydroxides, alkali or alkaline earth metal silicates or metasilicates such as sodium silicate or metasilicate and mixtures thereof, preferably from alkali or alkaline earth metal silicates or metasilicates such as sodium metasilicate, sodium silicate and mixtures thereof.

13. Composition according to any one of the preceding claims, in which the total content of the alkaline agent(s) ranges from 0.1 to 50% by weight, more preferably from 1 to 40% by weight, better still from 5 to 35% by weight, better still from 10 to 30% by weight, relative to the total weight of the composition.

14. Composition according to any one of the preceding claims which comprises one or more thickening polymers, preferably chosen from non-ionic polysaccharides, in particular chosen from celluloses and their derivatives, anionic (meth)acrylic associative thickening polymers and their mixtures.

15. Process for lightening keratin fibers, preferably human, in particular hair, comprising (i) a step of mixing the composition defined according to any one of claims 1 to 14 with a composition comprising hydrogen peroxide, (ii) a step of applying to said keratin fibers the composition resulting from the mixture obtained in step (i).

16. Device with at least two compartments, for clarifying keratin fibers, comprising at least one first compartment containing a composition as defined in any one of claims 1 to 14 and at least one second compartment containing a composition comprising hydrogen peroxide.

17. Use of a composition as defined in any one of claims 1 to 14, for lightening keratin fibers, and in particular hair.