Composition comprising peroxide salt, hydrocarbon having melting point greater than or equal to 85 DEG C and at least 10% fatty substance

Abstract

The present invention relates to a composition for lightening keratin fibres, and in particular human keratin fibres such as the hair, comprising one or more peroxidation salts, one or more hydrocarbons having a melting point greater than or equal to 85 DEG C, and one or more fatty substances other than hydrocarbons having a melting point greater than or equal to 85 DEG C, the one or more fatty substances are present in a total content of greater than or equal to 10% by weight relative to the total weight of the composition. The invention also relates to a method for lightening keratin fibres, preferably human keratin fibres, in particular the hair, comprising applying a composition to said keratin fibres.

Description

[0001] The subject of the present invention is a composition for lightening keratin fibers, and in particular human keratin fibers such as hair, comprising one or more peroxygenated salts, one or more hydrocarbons having a melting point greater than or equal to 85° C. and one or more fatty substances present in specific contents.

[0002] The invention also relates to a method for lightening human keratin fibers using such a composition.

[0003] In the art of hair lightening, depth of tone is often used to characterize the degree or level of lightening. The concept of "tone" is based on a classification of natural shades, where a hue separates each shade from the shade immediately behind or before it. This definition and classification of natural shades is well known to hair styling professionals and is disclosed in Charles Zviak's book Sciences des traitements capillaires [The Science of Hair Care], 1988, published by Masson, pages 215 and 278.

[0004] Tonal depths range from 1 (black) to 10 (lightest gold), with one integer corresponding to one hue; the higher the number, the lighter the hue.

[0005] Lightening thus makes it possible to provide a lighter shade depth than the original natural shade depth of the entire head of hair.

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

[0007] The role of this oxidizing agent is to degrade the melanin of the hair, which, depending on the nature of the oxidizing agent present, results in a more or less pronounced lightening of the fibers. Thus, for relatively mild lightening, the oxidizing agent is generally hydrogen peroxide. When a more pronounced lightening is desired, in particular an increase of at least 5 shades, peroxide salts, such as persulfates, are generally used in the presence of hydrogen peroxide. These peroxide salts are contained in compositions which, at the time of use, are mixed with an aqueous composition comprising hydrogen peroxide.

[0008] In order to adjust the pH of the composition to an alkaline pH so as to enable the activation of the oxidizing agent, an alkaline agent is used. This alkaline agent also causes swelling of the keratin fibers, while opening the scales, which promotes the penetration of the oxidizing agent into the fibers and thus improves the reaction efficiency.

[0009] However, the use of alkaline agents and peroxide salts may have an adverse effect on the quality of the hair. The main reasons for this adverse effect on the quality of the hair are a reduction in its cosmetic properties, such as a reduction in its gloss, and a deterioration in its mechanical properties, more particularly its mechanical strength, which may also be reflected in an increase in its porosity. The hair becomes weaker and may become brittle during subsequent treatments, such as blow-drying. Increased roughness is also observed, which is not particularly attractive.

[0010] Therefore, lightening dark hair is particularly difficult because if it is desired to significantly lighten the hair, significant amounts of peroxide salts need to be used and this can make the hair brittle.

[0011] Additionally, lightening compositions applied to extremely curly hair tend to alter the shape of the curls, which are often less defined.

[0012] Furthermore, compositions containing peroxide salts are usually in powder form. However, since powder compositions have the disadvantage of generating dust during handling, transportation and storage, compositions in the form of pastes have been proposed. Therefore, powder compositions are dispersed in a thickened organic inert liquid carrier, which provides a solution to the volatility problem.

[0013] However, the use of compositions in the form of pastes raises new problems.

[0014] These pastes are usually anhydrous and have a dense, hard texture. As a result, mixing the paste and the hydrogen peroxide composition is far from simple. This is reflected not only in the relatively long mixing times, but also in the difficulty in obtaining a homogeneous and stable mixture.

[0015] Furthermore, the resulting lightening compositions may be difficult to spread evenly throughout the hair, particularly curly or very curly hair, which may result in undesirably uneven lightening performance.

[0016] One of the objects of the present invention is therefore to propose compositions for lightening keratin materials, preferably human keratin fibers such as the hair, which do not have the abovementioned disadvantages, i.e. which are able to provide very good lightening properties without adversely affecting the cosmetic properties of the hair and which at the same time have very good qualities in use.

[0017] These and other objects are achieved by the present invention, one subject of which is therefore a composition comprising:

[0018] - one or more peroxide salts;

[0019] - one or more hydrocarbons having a melting point greater than or equal to 85°C, and

[0020] one or more fatty substances other than hydrocarbons having a melting point greater than or equal to 85° C., present in a total content greater than or equal to 10% by weight relative to the total weight of the composition.

[0021] According to a preferred embodiment, the composition according to the invention is a composition for lightening keratin fibers, preferably human keratin fibers, preferably the hair.

[0022] The invention also relates to a lightening method implementing said composition, to the use of said composition for lightening keratin fibres, and in particular the hair, and to a multi-compartment device suitable for implementing said lightening method.

[0023] The compositions according to the invention lead to a significant level of lightening, extending up to 9 shades, without any major adverse effect on the cosmetic properties of the hair and with improved qualities in use.

[0024] In particular, the composition according to the invention makes it possible to obtain a bleaching product in the form of a cream with improved stability over time. Furthermore, the composition according to the invention is quickly and easily mixed with an aqueous composition of hydrogen peroxide so as to obtain a homogeneous and stable mixture. The mixture is easy to apply to the hair. Its presentation form (as a smooth cream) makes it possible to prevent running during application while being easily spread over the entire head of hair, even in the case of extremely curly hair. Furthermore, the mixture does not dry out during the residence time, so that the active ingredients are optimally available during the entire residence time. Furthermore, the mixture is easily rinsed off.

[0025] The cosmetic properties of the hair treated with the composition according to the invention are not significantly adversely affected, in particular in terms of softness and detangling. The composition makes it possible to particularly condition the hair and to limit hair breakage during detangling of the hair, in particular of very curly hair. When it is applied to very curly hair, it also makes it possible to maintain the shape of the curls, thus providing them with good styling. The composition also makes it possible to have a good frizz control.

[0026] Other subjects, features, aspects and advantages of the present invention will become even more apparent after reading the following description and examples.

[0027] In the text below, unless otherwise indicated, the limits of a range of values ​​are included in the range, especially in the expressions "between" and "ranging from to".

[0028] In addition, the expression "at least one" used in the present specification is equivalent to the expression "one or more".

[0029] Peroxide salt

[0030] The compositions according to the invention comprise one or more peroxygenated salts.

[0031] Preferably, the peroxygenated salt is selected from persulfates; perborates; peracids and / or salts thereof; alkali metal, alkaline earth metal percarbonates or ammonium percarbonate; magnesium peroxide; and mixtures thereof.

[0032] More preferably, the composition according to the invention comprises at least one persulfate.

[0033] For the purposes of the present invention, persulfate (also called peroxysulfate) corresponds to SO5 2- Anion (peroxymonosulfate anion) or S2O8 2- anion (peroxodisulfate anion) or a compound comprising at least one of these anions.

[0034] Preferably, the persulfates according to the invention are chosen from peroxodisulfates.

[0035] According to a preferred embodiment of the present invention, the composition according to the present invention comprises at least one peroxygenated salt selected from persulfates; preferably selected from alkali metal persulfates, alkaline earth metal persulfates, ammonium persulfate and mixtures thereof; more preferably selected from (bis)tetrabutylammonium persulfate, barium persulfate, magnesium persulfate, calcium persulfate, sodium persulfate, potassium persulfate, ammonium persulfate and mixtures thereof; even more preferably selected from sodium persulfate, potassium persulfate, ammonium persulfate and mixtures thereof; even better selected from potassium persulfate, ammonium persulfate and mixtures thereof.

[0036] Preferably, the total content of peroxygenated salts present in the composition according to the invention ranges from 1% to 60% by weight, more preferably from 5% to 55% by weight, even more preferably from 10% to 50% by weight, even better still from 20% to 45% by weight, indeed even from 30% to 40% by weight relative to the total weight of the composition.

[0037] Preferably, the total content of persulfate present in the composition according to the invention ranges from 1% to 60% by weight, more preferably from 5% to 55% by weight, even more preferably from 10% to 50% by weight, even better still from 20% to 45% by weight, indeed even from 30% to 40% by weight, relative to the total weight of the composition.

[0038] Hydrocarbons with a melting point greater than or equal to 85°C

[0039] The composition according to the invention also comprises one or more hydrocarbons having a melting point greater than or equal to 85°C.

[0040] "Hydrocarbons having a melting point greater than or equal to 85°C" means hydrocarbons having a melting point greater than or equal to 85°C at atmospheric pressure (1.013×105 A hydrocarbon having a melting point greater than or equal to 85° C. at 100° C.

[0041] For the purposes of the present invention, the melting point corresponds to the temperature of the maximum endothermic peak observed on thermal analysis (differential scanning calorimetry or DSC), as described in standard 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 the company TA Instrument. In the present application, all melting points are at atmospheric pressure (1.013×10 5 Pa) was measured.

[0042] The hydrocarbons according to the invention consist of carbon atoms and hydrogen atoms, ie they contain only carbon atoms and hydrogen atoms. They preferably contain at least 30 carbon atoms, preferably at least 35 carbon atoms and better still at least 40 carbon atoms.

[0043] The hydrocarbons according to the invention may be linear or branched, preferably linear.

[0044] Preferably, the hydrocarbons according to the invention are saturated.

[0045] Preferably, the hydrocarbon according to the invention has a melting point ranging from 85 to 150°C, better still from 90 to 120°C.

[0046] The number average molar mass (Mn) of the hydrocarbons according to the invention is preferably between about 400 and 2000, more particularly between about 400 and 1000 and more preferably between 500 and 700.

[0047] The number average molecular weight of these hydrocarbons can be measured by gel permeation chromatography (GPC) at ambient temperature (25° C.) as polystyrene equivalent. The column used is a μ polystyrene type cross-linked copolymer column. The eluent is THF and the flow rate is 1 ml / min. 200 μl of a 0.5% by weight solution of silicone in THF are injected. The determination is carried out by refractometry and UV determination.

[0048] Preferably, the hydrocarbons having a melting point greater than or equal to 85° C. are chosen from waxes.

[0049] For the purposes of the present invention, waxes are lipophilic compounds that are solid at 25° C. and atmospheric pressure, have a reversible solid / liquid state change, have a melting point greater than about 40° C. and can be up to 200° C., and have an anisotropic crystal structure in the solid state. Generally, the size of the wax crystals is such that they diffract and / or scatter light, providing a substantially opaque, turbid appearance to the composition containing them. By bringing the wax to its melting point, it is possible to make it miscible with the oil and form a microscopically homogeneous mixture, but when returning the temperature of the mixture to room temperature, a recrystallization of the wax is achieved, which is microscopically and macroscopically detectable (opalescence).

[0050] Preferably, the hydrocarbon having a melting point greater than or equal to 85° C. is selected from microcrystalline wax, polyethylene wax, Fischer-Tropsch wax, paraffin wax, ozokerite wax and mixtures thereof.

[0051] According to a preferred embodiment, the hydrocarbon having a melting point greater than or equal to 85° C. is chosen from ethylene homopolymers, also called polyethylene.

[0052] Preferably, the hydrocarbon according to the invention is chosen from ethylene homopolymers having a melting point ranging from 85 to 150°C, better still from 90 to 120°C.

[0053] Still more preferably, the hydrocarbons having a melting point greater than or equal to 85° C. are chosen from polyethylene waxes.

[0054] Among the polyethylene waxes that can be used according to the invention, mention may in particular be made of the polyethylene wax sold under the name CIRE POLYETHYLENE AC 1702 by the company HONEYWELL and the polyethylene wax sold under the name CERAPOLYETHYLENE AC 1702 by the company NUCERASOLUTIONS. 655POLYETHYLENE, SCRUB BEADS, SE / 2POLYETHYLENE, 725POLYETHYLENE, 850POLYETHYLENE, Those sold by 1000POLYETHYLENE.

[0055] Preferably, the total content of hydrocarbons with a melting point greater than or equal to 85° C. ranges from 0.1% to 30% by weight, preferably from 0.5% to 20% by weight, more preferably from 1% to 10% by weight, better still from 1.5% to 5% by weight, relative to the total weight of the composition.

[0056] Preferably, the total content of hydrocarbons chosen from ethylene homopolymers having a melting point greater than or equal to 85° C. ranges from 0.1% to 30% by weight, preferably from 0.5% to 20% by weight, more preferably from 1% to 10% by weight, better still from 1.5% to 5% by weight, relative to the total weight of the composition.

[0057] Preferably, the total content of hydrocarbons having a melting point greater than or equal to 85° C. chosen from polyethylene waxes ranges from 0.1% to 30% by weight, preferably from 0.5% to 20% by weight, more preferably from 1% to 10% by weight, better still from 1.5% to 5% by weight, relative to the total weight of the composition.

[0058] Fatty substances other than hydrocarbons with a melting point greater than or equal to 85°C

[0059] The composition according to the invention also comprises one or more fatty substances other than hydrocarbons having a melting point greater than or equal to 85° C., whose total content is greater than or equal to 10% by weight relative to the total weight of the composition.

[0060] Preferably, the composition according to the invention comprises one or more fatty substances other than hydrocarbons having a melting point greater than or equal to 85°C.

[0061] "Fat material" means a substance which is a substance which is present at 25°C and at atmospheric pressure (1.013 × 10 5 Fatty substances are organic compounds which are insoluble in water at 400 ℃ and 800 ℃ (solubility less than 5% by weight, preferably less than 1% by weight, even more preferably less than 0.1% by weight). They have in their structure at least one hydrocarbon-based chain containing at least 6 carbon atoms and / or a sequence of at least two siloxane groups. In addition, fatty substances are generally soluble in organic solvents such as chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran (THF), liquid petrolatum or decamethylcyclopentasiloxane under the same temperature and pressure conditions.

[0062] Advantageously, the fatty substances that can be used according to the invention are neither (poly)oxyalkylenated nor (poly)glycerolated.

[0063] Preferably, the fatty substances useful according to the invention are non-silicone.

[0064] A "non-silicone fatty substance" means a fatty substance which does not contain any Si-O bonds, and a "silicone fatty substance" means a fatty substance which contains at least one Si-O bond.

[0065] Fatty substances useful according to the invention may be liquid fatty substances (or oils) and / or solid fatty substances. "Liquid fatty substances" means fatty substances which are liquid fatty substances (or oils) at atmospheric pressure (1.013 x 10 5A fatty substance having a melting point of less than or equal to 25°C at atmospheric pressure (1.013×10 5 Fatty substances with a melting point greater than 25°C at 370°C.

[0066] For the purposes of the present invention, the melting point corresponds to the temperature of the maximum endothermic peak observed on thermal analysis (differential scanning calorimetry or DSC), as described in standard 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 the company TA Instrument. In the present application, all melting points are at atmospheric pressure (1.013×10 5 Pa) was measured.

[0067] More particularly, the liquid fatty substance according to the invention is chosen from C6 to C16 liquid hydrocarbons, liquid hydrocarbons containing more than 16 carbon atoms, non-silicone oils of animal origin, oils of triglyceride type of vegetable or synthetic origin, fluoro oils, liquid fatty alcohols, liquid fatty acid and / or fatty alcohol esters other than triglycerides, silicone oils, and mixtures thereof.

[0068] It is contemplated that fatty alcohols, fatty esters and fatty acids more particularly have at least one saturated or unsaturated, linear or branched hydrocarbon-based radical containing from 6 to 40 and better still from 8 to 30 carbon atoms, which is optionally substituted in particular with one or more, in particular 1 to 4, hydroxyl groups. If they are unsaturated, these compounds may contain one to three conjugated or non-conjugated carbon-carbon double bonds.

[0069] As for C6 to C16 liquid hydrocarbons, they may be linear, branched or optionally cyclic, and are preferably selected from alkanes. Examples that may be mentioned include hexane, cyclohexane, undecane, dodecane, isododecane, tridecane or isoparaffins (such as isohexadecane or isodecane), and mixtures thereof.

[0070] The liquid hydrocarbons containing more than 16 carbon atoms may be linear or branched and of inorganic or synthetic origin and are preferably chosen from liquid paraffin or liquid petrolatum (INCI names: mineral oil or liquid paraffin), polydecene, hydrogenated polyisobutene (such as ), and mixtures thereof.

[0071] A hydrocarbon-based oil of animal origin that may be mentioned is perhydrosqualene.

[0072] The triglyceride oils of vegetable or synthetic origin are preferably chosen from liquid fatty acid triglycerides containing from 6 to 30 carbon atoms, such as heptanoic or caprylic triglycerides, or alternatively, such as sunflower oil, corn oil, soybean oil, marrow oil, grapeseed oil, sesame oil, hazelnut oil, almond oil, macadamia oil, aurora oil, castor oil, avocado oil, caprylic / capric triglycerides (such as those sold by Stearineries Dubois in France or by Dynamit Nobel under the name 810, 812 and 818), jojoba oil and shea butter, and mixtures thereof.

[0073] As regards the fluoro oils, they may be chosen from perfluoromethylcyclopentane and perfluoro-1,3-dimethylcyclohexane, which are commercially available from BNFL Fluorochemicals under the name PC1 and PC3; Perfluoro-1,2-dimethylcyclobutane; Perfluoroalkanes, such as those sold by 3M under the name PF and PF Dodecafluoropentane and tetradecafluorohexane sold by Atochem under the name Perfluorooctyl bromide; nonafluoromethoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as those sold by 3M under the name PF 4-Trifluoromethylperfluoromorpholine for sale.

[0074] The liquid fatty alcohols suitable for the invention are more particularly chosen from linear or branched, saturated or unsaturated alcohols, preferably unsaturated or branched alcohols containing from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms. Examples that may be mentioned include octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, isostearyl alcohol, oleyl alcohol, linolenyl alcohol, ricinoleyl alcohol, undecenyl alcohol and linoleyl alcohol, and mixtures thereof.

[0075] As regards the previously mentioned liquid esters of fatty acids and / or fatty alcohols other than triglycerides, mention may in particular be made of esters of saturated or unsaturated, linear C1 to C26 or branched C3 to C26 aliphatic mono- or polybasic acids and saturated or unsaturated, linear C1 to C26 or branched C3 to C26 aliphatic mono- or polyhydric alcohols, the total carbon number of these esters being greater than or equal to 6 and more advantageously greater than or equal to 10.

[0076] Preferably, for esters of monohydric alcohols, at least one of the alcohol and the acid from which the esters of the present invention are derived is branched.

[0077] Among the monoesters, mention may be made of 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 isononanoate; octyldodecyl erucate; oleyl erucate; ethyl and isopropyl palmitates, such as 2-ethylhexyl palmitate, 2-octyldecyl palmitate; alkyl myristates, such as isopropyl myristate; isobutyl stearate; 2-hexyldecyl laurate, and mixtures thereof.

[0078] Preferably, among the monoesters of monoacids and monoalcohols, use will be made of ethyl and isopropyl palmitate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isodecyl neopentanoate and isostearyl neopentanoate, and mixtures thereof.

[0079] Still within the context of this variant, it is also possible to use esters of C4-C22 di- or tricarboxylic acids and C1-C22 alcohols and esters of mono-, di- or tricarboxylic acids and C2-C26 dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols.

[0080] Mention may in particular be made of: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyldodecyl stearate; pentaerythritol monoricinoleate; pentaerythritol tetraisononanoate; pentaerythritol tetranonanoate; pentaerythritol tetraisostearate; pentaerythritol tetraoctanoate; propylene glycol dicaprylate; propylene glycol dicaprate; tridecyl erucate; triisopropyl citrate; triisostearyl citrate; glyceryl trilactate; glyceryl tricaprylate; trioctyldodecyl citrate; trioleyl citrate; propylene glycol dicaprylate; neopentyl glycol diheptanoate; diethylene glycol diisononanoate; and polyethylene glycol distearate, and mixtures thereof.

[0081] The composition may also contain sugar esters and diesters of C6 to C30 and preferably C12 to C22 fatty acids as fatty esters. It is contemplated that "sugar" means oxygen-containing hydrocarbon-based compounds with several alcohol functional groups, with or without aldehyde or ketone functional groups, and containing at least 4 carbon atoms. These sugars may be monosaccharides, oligosaccharides or polysaccharides.

[0082] Examples of suitable sugars that may be mentioned include sucrose, glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose, and derivatives thereof, in particular alkyl derivatives, such as methyl derivatives, for example methylglucose.

[0083] Sugar esters of fatty acids may be chosen in particular from the group comprising esters or mixtures of esters of the above-mentioned sugars and linear or branched, saturated or unsaturated C6 to C30 and preferably C12 to C22 fatty acids. If they are unsaturated, these compounds may contain one to three conjugated or non-conjugated carbon-carbon double bonds.

[0084] The esters according to this variant may also be chosen from mono-, di-, tri- and tetraesters, polyesters and mixtures thereof.

[0085] These esters may be, for example, oleate, laurate, palmitate, myristate, behenate, cocoate, stearate, linoleate, linolenate, caprate, arachidonate or mixtures thereof, in particular such as the mixed esters oleo-palmitate, oleo-stearate and palmito-stearate.

[0086] More particularly, use is made of the monoesters and diesters, and especially the mono- or di-oleates, stearates, behenates, oleyl palmitates, linoleates, linolenates and oleostearates of sucrose, glucose or methylglucose, and mixtures thereof.

[0087] An example that may be mentioned is the company established under the name A product sold by DO which is methyl glucose dioleate.

[0088] Preferably, liquid esters of monobasic acids and monohydric alcohols will be used.

[0089] The silicone oils that can be used in the composition according to the invention can be volatile or non-volatile, cyclic, linear or branched silicone oils, which are unmodified or modified with organic groups and preferably have an OD of from 5×10 -6 Up to 2.5m 2 / s, and preferably 1×10 -5 Up to 1m 2 / s viscosity.

[0090] Preferably, the silicone oil is chosen from polydialkylsiloxanes, in particular polydimethylsiloxane (PDMS), and liquid polyorganosiloxanes comprising at least one aromatic group.

[0091] These silicone oils may also be organomodified.The organomodified silicone oils that can be used according to the invention are preferably liquid silicones as previously defined comprising in their structure one or more organic functional groups attached via hydrocarbon-based groups, for example chosen from amine and alkoxy groups.

[0092] Organopolysiloxanes are defined in more detail in Walter Noll, Chemistry and Technology of Silicones (1968), Academic Press. They can be volatile or nonvolatile.

[0093] When they are volatile, the silicone oils are more particularly chosen from those having a boiling point between 60° C. and 260° C., and even more particularly from:

[0094] (i) Cyclic polydialkylsiloxanes containing from 3 to 7 and preferably from 4 to 5 silicon atoms. These are marketed, for example, in particular by Union Carbide under the name Volatile 7207 or by Rhodia under the name Octamethylcyclotetrasiloxane sold under the name Volatile by Union Carbide 7158 and by Rhodia under the name Decamethylcyclopentasiloxane sold as 70045V5, and mixtures thereof.

[0095] Mention may also be made of cyclic copolymers of the dimethylsiloxane / methylalkylsiloxane type, such as Volatile sold by Union Carbide. FZ 3109.

[0096] Mention may also be made of mixtures of cyclic polydialkylsiloxanes with compounds derived from silicones, such as a mixture of octamethylcyclotetrasiloxane and tetrakis(trimethylsilyl)pentaerythritol (50 / 50) and a mixture of octamethylcyclotetrasiloxane and oxy-1,1′-bis(2,2,2′,2′,3,3′-hexatrimethylsiloxy)neopentane;

[0097] (ii) having 2 to 9 silicon atoms and having a carbon content of less than or equal to 5×10 -6 m 2Straight-chain volatile polydialkylsiloxanes with a viscosity of 1000 Å / s are used. An example is decamethyltetrasiloxane sold in particular by Toray Silicone under the name SH 200. Silicones belonging to this class are also described in the article Volatile Silicone Fluids for Cosmetics by Todd & Byers, Cosmetics and Toiletries, Vol. 91, January 1976, pp. 27-32.

[0098] Preference is given to using nonvolatile polydialkylsiloxanes.

[0099] These silicone oils are more particularly chosen from polydialkylsiloxanes, among which mention may mainly be made of polydimethylsiloxanes carrying trimethylsilyl end groups. The viscosity of these silicones is measured at 25° C. according to standard ASTM 445, annex C.

[0100] Among these polydialkylsiloxanes, mention may be made in a non-limiting manner of the following commercial products:

[0101] - 47 and 70 047 series sold by Rhodia Oil or Oil, for example oil 70047V 500 000;

[0102] - Marketed by Rhodia Series of oils;

[0103] - Oils of the 200 series from Dow Corning, such as those with 60000 mm 2 / s viscosity DC200;

[0104] - From General Electric oils, and certain oils from the SF series (SF 96, SF 18) from General Electric.

[0105] Mention may also be made of the polydimethylsiloxanes with dimethylsilanol end groups known under the name dimethiconol (CTFA), such as the oils of the 48 series from the company Rhodia.

[0106] The organomodified silicones that can be used according to the invention are silicones as defined previously comprising in their structure one or more organic functional groups attached via hydrocarbon-based groups.

[0107] As regards the liquid polyorganosiloxanes comprising at least one aromatic group, they may in particular be polydiphenylsiloxanes, and polyalkylarylsiloxanes functionalized with the organofunctional groups mentioned above.

[0108] These polyalkylaryl siloxanes are particularly selected from those having a range of from 1×10 -5 Up to 5×10 -2 m 2 / s linear and / or branched polydimethyl / methylphenyl siloxane or polydimethyl / diphenyl siloxane having a viscosity of 1.1777 W / s.

[0109] Among these polyalkylaryl siloxanes, examples that may be mentioned include the products sold under the following names:

[0110] - Series 70 641 from Rhodia Oil;

[0111] -From Rhodia 70 Oils of the 633 and 763 series;

[0112] - oil from Dow Corning 556 Cosmetic Grade Fluid;

[0113] - Silicones from the PK series from Bayer, such as the product PK20;

[0114] - Silicones from the PN and PH series from Bayer, such as the products PN1000 and PH1000;

[0115] - Certain oils from the SF series from General Electric, such as SF 1023, SF 1154, SF 1250 and SF 1265.

[0116] Among the organomodified silicones, mention may be made of polyorganosiloxanes comprising:

[0117] - substituted or unsubstituted amine groups, such as the products sold under the names GP 4 Silicone Fluid and GP 7100 by Genesee or the products sold under the names Q28220 and Dow Corning 929 or 939 by Dow Corning. Substituted amine groups are especially C1 to C4 aminoalkyl groups;

[0118] - alkoxylated groups,

[0119] -Hydroxy.

[0120] The solid fatty material according to the invention preferably has a temperature range of 25° C. and 1 s -1The viscosity is greater than 2 Pa.s measured at a shear rate of .

[0121] The solid fatty substances are preferably selected from solid fatty acids, solid fatty alcohols, solid esters of fatty acids and / or fatty alcohols, waxes, ceramides and mixtures thereof.

[0122] "Fatty acid" means a long-chain carboxylic acid containing from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms. The solid fatty acids according to the invention preferably contain from 10 to 30 carbon atoms and better still from 14 to 22 carbon atoms. They may optionally be hydroxylated. These fatty acids are neither oxyalkylened nor glycerolated.

[0123] The solid fatty acids that can be used in the present invention are chosen in particular from myristic acid, cetyl acid, stearylic acid, palmitic acid, arachidic acid, stearic acid, lauric acid, behenic acid, 12-hydroxystearic acid, and mixtures thereof.

[0124] Particularly preferably, the solid fatty acid is selected from stearic acid, myristic acid and palmitic acid.

[0125] "Fatty alcohols" are understood to mean long-chain fatty alcohols containing from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms, and containing at least one hydroxyl group OH. These fatty alcohols are neither oxyalkylenated nor glycerolated.

[0126] The solid fatty alcohols may be saturated or unsaturated and linear or branched and they contain from 8 to 40 carbon atoms, preferably from 10 to 30 carbon atoms. Preferably, the solid fatty alcohols have the structure R-OH, in which R represents a linear alkyl group optionally substituted by one or more hydroxyl groups, the alkyl group containing from 8 to 40, preferably from 10 to 30 carbon atoms, better still from 10 to 30, indeed even from 12 to 24 carbon atoms, even better still from 14 to 22 carbon atoms.

[0127] The solid fatty alcohols that can be used are preferably chosen from saturated or unsaturated, linear or branched, preferably linear and saturated (mono)alcohols containing from 8 to 40 carbon atoms, better still from 10 to 30, indeed even from 12 to 24 carbon atoms, even better still from 14 to 22 carbon atoms.

[0128] The solid fatty alcohols that can be used can be selected from the following items, alone or as a mixture: myristyl alcohol (or 1-tetradecanol); cetyl alcohol (or 1-hexadecanol); stearyl alcohol (or 1-octadecyl alcohol); arachidyl alcohol (or 1-eicosanol); behenyl alcohol (or 1-docosanol); lignoceryl alcohol (or 1-tetracosanol); cetyl alcohol (or 1-hexacosanol); montanol (or 1-octacosanol); and beeswax alcohol (or 1-triacontanol).

[0129] Preferably, the solid fatty alcohol is selected from cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, arachidyl alcohol, and mixtures thereof, such as cetylstearyl alcohol or cetearyl alcohol. Particularly preferably, the solid fatty alcohol is selected from cetylstearyl alcohol or cetearyl alcohol and cetyl alcohol.

[0130] The solid esters of fatty acids and / or fatty alcohols which can be used are preferably selected from esters derived from C9-C26 carboxylic fatty acids and / or C9-C26 fatty alcohols.

[0131] Preferably, the solid fatty esters are esters of a linear or branched saturated carboxylic acid containing at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms and a linear or branched saturated monohydric alcohol containing at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms. The saturated carboxylic acid may optionally be hydroxylated and is preferably a monocarboxylic acid.

[0132] It is also possible to use esters of C4-C22 di- or tricarboxylic acids and C1-C22 alcohols and esters of mono-, di- or tricarboxylic acids and C2-C26 dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols.

[0133] Mention may in particular be made of octyldodecyl behenate, isocetyl behenate, cetyl lactate, stearyl octanoate, octyl octanoate, cetyl octanoate, decyl oleate, hexyl stearate, octyl stearate, myristyl stearate, cetyl stearate, stearyl stearate, octyl nonanoate, cetyl myristate, myristyl myristate, stearyl myristate, diethyl sebacate, diisopropyl sebacate, diisopropyl adipate, di-n-propyl adipate, dioctyl adipate, dioctyl maleate, octyl palmitate, myristyl palmitate, cetyl palmitate, stearyl palmitate, and mixtures thereof.

[0134] Preferably, the solid esters of fatty acids and / or fatty alcohols are chosen from C9-C26 alkyl palmitates, in particular myristyl palmitate, cetyl palmitate or stearyl palmitate; C9-C26 alkyl myristic acid esters, such as cetyl myristic acid, stearyl myristic acid and myristyl myristic acid; and C9-C26 alkyl stearates, in particular myristyl stearate, cetyl stearate and stearyl stearate; and mixtures thereof.

[0135] For the purposes of the present invention, waxes are lipophilic compounds that are solid at 25° C. and atmospheric pressure, have a reversible solid / liquid state change, have a melting point greater than about 40° C. and can be up to 200° C., and have an anisotropic crystal structure in the solid state. Generally, the size of the wax crystals is such that they diffract and / or scatter light, providing a substantially opaque, turbid appearance to the composition containing them. By bringing the wax to its melting point, it is possible to make it miscible with the oil and form a microscopically homogeneous mixture, but when returning the temperature of the mixture to room temperature, a recrystallization of the wax is achieved, which is microscopically and macroscopically detectable (opalescence).

[0136] In particular, the waxes suitable for use in the present invention may be selected from waxes of animal or vegetable origin, non-silicone synthetic waxes, and mixtures thereof.

[0137] Mention may in particular be made of beeswax (especially of organic origin), lanolin wax and Chinese insect wax; rice wax, carnauba wax, candelilla wax, cocoa wax, esparto wax, berry wax, shellac wax, Japan wax and sumac wax; montan wax, orange wax, lemon wax, and waxy copolymers, and also esters thereof.

[0138] Mention may also be made of waxes obtained by catalytic hydrogenation of animal or vegetable oils having linear or branched C8-C32 fatty chains. Among these waxes, mention may be made in particular of isomerized jojoba oils, such as trans-isomerized partially hydrogenated jojoba oils, in particular those marketed by the company Desert Whale under the commercial reference No. Products manufactured or sold, hydrogenated sunflower oil, hydrogenated castor oil, hydrogenated coconut kernel oil, hydrogenated lanolin oil and bis(1,1,1-trimethylolpropane) tetrastearate, especially by Heterene Company under the name Hest Products for sale.

[0139] It is also possible to use waxes obtained by hydrogenating castor oil esterified with cetyl alcohol, such as those sold under the name Phytowax Castor by the company Sophim. and The ones that are sold.

[0140] Waxes that can also be used are C20 to C40 alkyl (hydroxystearyloxy) stearates (the alkyl group contains from 20 to 40 carbon atoms), alone or as a mixture. Such waxes are especially marketed by Koster Keunen under the name Kester Wax K 82 Hydroxypolyester K 82 and Kester Wax K 80 Sale.

[0141] Microwaxes may also be used in the composition; mention may in particular be made of microcrystalline carnauba wax, such as that marketed by Micro Powders under the name MicroCare Microcrystalline waxes, as well as polytetrafluoroethylene microcrystalline waxes, such as those sold by Micronizer Inc. under the name Microslip and 519 The ones that are sold.

[0142] These waxes are preferably chosen from vegetable waxes, such as cocoa butter or softwood or sugar cane wax, olive wax, rice bran wax, hydrogenated jojoba wax, carnauba wax, chrysanthemum wax, candelilla wax, phragmites wax, or absolute waxes of flowers, such as the blackcurrant flower essence wax sold by Bertin (France); waxes of animal origin, such as beeswax or modified beeswax (cera bellina), spermaceti wax, lanolin wax and lanolin derivatives; and mixtures thereof.

[0143] The ceramides or ceramide analogs such as glycosylceramides that can be used in the composition according to the invention are known; mention may in particular be made of ceramides of classes I, II, III and V according to the Dawning classification.

[0144] The ceramide or its analogue that can be used preferably corresponds to the following formula: R3CH(OH)CH(CH2OR2)(NHCOR1), wherein:

[0145] R1 indicates a linear or branched, saturated or unsaturated alkyl group derived from a C14-C30 fatty acid, which group may be substituted with a hydroxyl group in the α position or a hydroxyl group in the Ω position, which hydroxyl group is esterified with a saturated or unsaturated C16-C30 fatty acid;

[0146] R2 indicates a hydrogen atom or a (glycosyl)n group, a (galactosyl)m group or a sulfogalactosyl group, wherein n is an integer ranging from 1 to 4 and m is an integer ranging from 1 to 8;

[0147] R3 indicates a saturated or unsaturated C15-C26 hydrocarbon-based group in the α position, which group may be substituted by one or more C1-C14 alkyl groups; it should be understood that in the case of natural ceramides or glycosylceramides, R3 may also indicate a C15-C26 α-hydroxyalkyl group, which hydroxyl group is optionally esterified with a C16-C30 α-hydroxy acid.

[0148] More particularly preferred ceramides are compounds in which R1 indicates a saturated or unsaturated alkyl group derived from a C16-C22 fatty acid; R2 indicates a hydrogen atom; and R3 indicates a saturated straight-chain C15 group.

[0149] Preferably, ceramide is used in which R1 indicates a saturated or unsaturated alkyl group derived from a C14-C30 fatty acid; R2 indicates a galactosyl group or a sulfogalactosyl group; and R3 indicates a -CH=CH-(CH2)12-CH3 group.

[0150] Compounds can also be used in which R1 indicates a saturated or unsaturated alkyl group derived from a C12-C22 fatty acid; R2 indicates a galactosyl group or a sulfogalactosyl group and R3 indicates a saturated or unsaturated C12-C22 hydrocarbon-based group, and preferably a -CH=CH-(CH2)12-CH3 group.

[0151] As particularly preferred compounds, mention may also be made of 2-N-linoleoylaminooctadecane-1,3-diol; 2-N-oleoylaminooctadecane-1,3-diol; 2-N-palmitoylaminooctadecane-1,3-diol; 2-N-stearoylaminooctadecane-1,3-diol; 2-N-behenoylaminooctadecane-1,3-diol; 2-N-[2-hydroxypalmitoyl]aminooctadecane-1,3-diol; 2-N-stearoylaminooctadecane-1,3,4-triol, and In particular, N-stearoyl phytosphingosine, 2-N-palmitoylaminohexadecane-1,3-diol, N-linoleoyl sphingosine, N-oleoyl sphingosine, N-palmitoyl sphingosine, N-stearoyl sphingosine, and N-behenoyl sphingosine, N-docosanoyl-N-methyl-D-glucosamine, cetyl acid N-(2-hydroxyethyl)-N-(3-cetyloxy-2-hydroxypropyl)amide and bis(N-hydroxyethyl-N-cetyl)malonamide; and mixtures thereof. Preferably, N-oleoyl sphingosine is used.

[0152] The solid fatty substances other than hydrocarbons having a melting point greater than or equal to 85° C. are preferably chosen from solid fatty acids, solid fatty alcohols, waxes and mixtures thereof.

[0153] According to a preferred embodiment, the composition according to the invention comprises at least one liquid fatty substance, preferably chosen from liquid hydrocarbons containing more than 16 carbon atoms, vegetable oils, liquid fatty alcohols, liquid fatty esters, silicone oils and mixtures thereof.

[0154] According to another particularly preferred embodiment, the composition according to the invention comprises at least one liquid fatty substance chosen from liquid hydrocarbons containing more than 16 carbon atoms, in particular liquid vaseline, liquid fatty alcohols and mixtures thereof.

[0155] More preferably, the composition according to the invention comprises at least one liquid fatty substance chosen from liquid hydrocarbons containing more than 16 carbon atoms, in particular liquid vaseline.

[0156] The total content of fatty substances other than hydrocarbons having a melting point greater than or equal to 85° C. preferably ranges from 10 to 60% by weight relative to the total weight of the composition.

[0157] The total content of fatty substances other than hydrocarbons having a melting point greater than or equal to 85° C. is preferably greater than or equal to 12% by weight, preferably greater than or equal to 15% by weight, better still greater than or equal to 20% by weight, even better still greater than or equal to 25% by weight, relative to the total weight of the composition.

[0158] The total content of fatty substances other than hydrocarbons having a melting point greater than or equal to 85° C. ranges preferably from 10% to 60% by weight, preferably from 12% to 50% by weight, more preferably 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.

[0159] The total content of liquid fatty substances ranges preferably from 10% to 60% by weight, preferably from 12% to 50% by weight, more preferably 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.

[0160] Associative polymer

[0161] The composition according to the invention may also comprise one or more associative polymers.

[0162] Preferably, the composition according to the invention comprises one or more associative polymers.

[0163] It is contemplated that "associative polymers" are polymers, preferably amphiphilic polymers, that are capable of reversibly associating with each other or with other molecules in aqueous media.

[0164] Their chemical structure more particularly comprises at least one hydrophilic region or group and at least one hydrophobic region or group.

[0165] By "hydrophobic region or group" is meant a hydrocarbon-based group or polymer having a saturated or unsaturated, linear or branched hydrocarbon-based chain containing at least 10 carbon atoms, preferably from 10 to 30 carbon atoms, in particular from 12 to 30 carbon atoms, and more preferably from 18 to 30 carbon atoms.

[0166] Preferably, the hydrocarbon-based group is derived from a monofunctional compound. For example, the hydrophobic group may be derived from a fatty alcohol such as stearyl alcohol, dodecanol or decanol. It may also indicate a hydrocarbon-based polymer, such as polybutadiene.

[0167] Associative polymers can be anionic, cationic, amphoteric or nonionic.

[0168] Among the associative polymers of anionic type, mention may be made of:

[0169] (a) those comprising at least one hydrophilic unit and at least one fatty chain allyl ether unit, more particularly those whose hydrophilic units consist of ethylenically unsaturated anionic monomers, more particularly still of vinyl carboxylic acids and most particularly of acrylic acid or methacrylic acid or mixtures thereof.

[0170] Among these anionic associative polymers, those particularly preferred according to the invention are polymers formed from 20 to 60% by weight of acrylic acid and / or methacrylic acid, from 5 to 60% by weight of lower alkyl (meth)acrylates, from 2 to 50% by weight of fatty chain alkyl ethers and from 0 to 1% by weight of a crosslinking agent, which is a well-known copolymerizable unsaturated polyethylenic monomer, such as diallyl phthalate, allyl (meth)acrylate, divinylbenzene, (poly)ethylene glycol dimethacrylate or methylenebisacrylamide.

[0171] Among the latter polymers, those most particularly preferred are the crosslinked terpolymers of methacrylic acid, ethyl acrylate and polyethylene glycol (10EO) stearyl ether (steareth-10), in particular marketed under the name Salcare SC and Salcare SC Those sold are HYDRADE(R), which is an aqueous 30% emulsion of a crosslinked terpolymer of methacrylic acid, ethyl acrylate and steareth-10 allyl ether (40 / 50 / 10).

[0172] - (b) those comprising i) at least one hydrophilic unit of the unsaturated ethylenic carboxylic acid type and ii) at least one hydrophobic unit of the type such as (C10-C30)alkyl esters of unsaturated carboxylic acids.

[0173] The (C10-C30) alkyl esters of unsaturated carboxylic acids useful in the present invention include, for example, lauryl acrylate, stearyl acrylate, decyl acrylate, isodecyl acrylate and dodecyl acrylate, and the corresponding methacrylates: lauryl methacrylate, stearyl methacrylate, decyl methacrylate, isodecyl methacrylate and dodecyl methacrylate.

[0174] Anionic polymers of this type are described and prepared, for example, according to patents US Pat. No. 3,915,921 and US Pat. No. 4,509,949.

[0175] Among this type of anionic associative polymers, use will more particularly be made of those composed of from 95 to 60% by weight of acrylic acid (hydrophilic units), from 4 to 40% by weight of C10-C30 alkyl acrylates (hydrophobic units) and from 0 to 6% by weight of crosslinking polymerizable monomers, or alternatively of from 98 to 96% by weight of acrylic acid (hydrophilic units), from 1 to 4% by weight of C10-C30 alkyl acrylates (hydrophobic units) and from 0.1 to 0.6% by weight of crosslinking polymerizable monomers, such as those described above.

[0176] Among the above-mentioned polymers, those which are most particularly preferred according to the invention are those which are produced by Goodrich under the trade name Pemulen Pemulen Carbopol Products sold by Lubrizol under the trade name Carbopol ETD 2020 (INCI name: Acrylates / C10-30 Alkyl Acrylate Crosspolymer), sold by SEPC under the name Coatex The product sold, and even more preferred is Carbopol ETD 2020

[0177] Mention may also be made of the acrylic acid / lauryl methacrylate / vinylpyrrolidone terpolymer sold under the name Acrylidone LM by the company ISP.

[0178] - (c) maleic anhydride / C30-C38 alpha-olefin / alkyl maleate terpolymers, such as those marketed under the name Performa V by Newphase Technologies The product sold (maleic anhydride / C30-C38 alpha-olefin / isopropyl maleate copolymer).

[0179] - (d) an acrylic acid terpolymer comprising:

[0180] i) about 20 to 70% by weight of an α,β-monoethylenically unsaturated carboxylic acid [A],

[0181] ii) about 20 to 80% by weight of an α,β-monoethylenically unsaturated non-surfactant monomer other than [A],

[0182] iii) about 0.5% to 60% by weight of a nonionic monocarbamate which is the reaction product of a monobasic surfactant and a monoethylenically unsaturated monoisocyanate,

[0183] Terpolymers such as those described in patent application EP-A-0 173 109, and more particularly those described in Example 3, ie methacrylic acid / methyl acrylate / behenyl dimethyl-m-isopropenyl benzyl isocyanate ethoxylated (40EO) terpolymer, as aqueous 25% dispersion.

[0184] (e) copolymers which comprise, among their monomers, α,β-monoethylenically unsaturated carboxylic acids and esters of α,β-monoethylenically unsaturated carboxylic acids with oxyalkylened fatty alcohols.

[0185] Preferably, these compounds also comprise as monomers esters of α,β-monoethylenically unsaturated carboxylic acids with C1-C4 alcohols.

[0186] As an example of a compound of this type, mention may be made of Aculyn® sold by Rohm and Haas. It is an oxyalkylenated methacrylic acid / ethyl acrylate / stearyl methacrylate terpolymer, and also Aculyn 88, also sold by Rohm and Haas Company, or even Aculyn It is an oxyalkylened methacrylic acid / ethyl acrylate / behenyl methacrylate terpolymer (INCI name: Acrylates / Beheneth-25 Methacrylate Copolymer), and also Novethix L-10 sold by the Lubrizol Corporation.

[0187] (f) amphiphilic polymers comprising at least one ethylenically unsaturated monomer containing sulfonic acid groups in free or partially or completely neutralized form and comprising at least one hydrophobic part. These polymers may be crosslinked or non-crosslinked. They are preferably crosslinked.

[0188] Ethylenically unsaturated monomers comprising sulfonic acid groups are chosen in particular from vinylsulfonic acid, styrenesulfonic acid, (meth)acrylamido(C1-C22)alkylsulfonic acids and N-(C1-C22)alkyl(meth)acrylamido(C1-C22)alkylsulfonic acids, for example undecylacrylamidomethanesulfonic acid and also partially or completely neutralized forms thereof.

[0189] More preferably, use is made of (meth)acrylamido(C1-C22)alkylsulfonic acids, for example acrylamidomethanesulfonic acid, acrylamidoethanesulfonic acid, acrylamidopropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, methacrylamido-2-methylpropanesulfonic acid, 2-acrylamido-n-butanesulfonic acid, 2-acrylamido-2,4,4-trimethylpentanesulfonic acid, 2-methacrylamidododecylsulfonic acid or 2-acrylamido-2,6-dimethyl-3-heptanesulfonic acid and also partially or completely neutralized forms thereof.

[0190] Use is made more particularly of 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and also its partially or completely neutralized forms.

[0191] The polymers of this family may be chosen in particular from random amphiphilic AMPS polymers modified by reaction with C6-C22 n-mono- or di-n-alkylamines, and as described in patent application WO 00 / 31154, forming an integral part of the content of the specification. These polymers may also contain other ethylenically unsaturated hydrophilic monomers chosen, for example, from (meth)acrylic acid, its β-substituted alkyl derivatives or esters thereof with monohydric alcohols or mono- or polyalkylene glycols, (meth)acrylamide, vinylpyrrolidone, maleic anhydride, itaconic acid or maleic acid, or mixtures of these compounds.

[0192] Preferred polymers of this family are selected from amphiphilic copolymers of AMPS and at least one ethylenically unsaturated hydrophobic monomer.

[0193] These same copolymers may also contain one or more ethylenically unsaturated monomers not comprising a fatty chain, such as (meth)acrylic acid, its β-substituted alkyl derivatives or its esters obtained with monohydric alcohols or mono- or polyalkylene glycols, (meth)acrylamide, vinylpyrrolidone, maleic anhydride, itaconic acid or maleic acid, or mixtures of these compounds.

[0194] These copolymers are described in particular in patent application EP-A 750 899, patent US 5 089 578 and in the following publication by Yotaro Morishima:

[0195] -Self-assembling amphiphilic polyelectrolytes and their nanostructures, Chinese Journal of Polymer Science, Vol. 18, No. 40, (2000), 323-336;

[0196] -Micelle formation of random copolymers of sodium 2-(acrylamido)-2-methylpropanesulfonate and a nonionic surfactant macromonomer in water asstudied by fluorescence and dynamic light scattering, Macromolecules, Vol. 33, No. 10, (2000), 3694-3704;

[0197] -Solution properties of micelle networks formed by non-ionic moieties covalently bound to an polyelectrolyte: salt effects on rheological behavior - Langmuir, Vol. 16, No. 12, (2000) 5324-5332;

[0198] -Stimuli responsive amphiphilic copolymers of sodium 2-(acrylamido)-2-methylpropanesulfonate and associative macromonomers, Polym. Preprint, Div. Polym. Chem. 40(2), (1999), 220-221.

[0199] Among these polymers, mention may be made of:

[0200] - crosslinked or non-crosslinked, neutralized or unneutralized copolymers comprising from 15 to 60% by weight of AMPS units and from 40 to 85% by weight of (C8-C16)alkyl(meth)acrylamide units or (C8-C16)alkyl(meth)acrylate units, relative to the polymer, such as those described in application EP-A-750 899;

[0201] - terpolymers comprising from 10 to 90 mol % of acrylamide units, from 0.1 to 10 mol % of AMPS units and from 5 to 80 mol % of n-(C6-C18)alkylacrylamide units, such as those described in patent US Pat. No. 5,089,578.

[0202] Mention may also be made of completely neutralized copolymers of AMPS and dodecyl methacrylate, and also crosslinked and non-crosslinked copolymers of AMPS and n-dodecylmethacrylamide, such as those described in the abovementioned Morishima article.

[0203] Among the anionic associative polymers according to the invention, preference is given to polymers comprising i) at least one hydrophilic unit of the unsaturated ethylenic carboxylic acid type and ii) at least one hydrophobic unit of the type such as (C10-C30)alkyl esters of unsaturated carboxylic acids (family b)), and copolymers comprising among their monomers α,β-monoethylenically unsaturated carboxylic acids and esters of α,β-monoethylenically unsaturated carboxylic acids with oxyalkylened fatty alcohols (family e)).

[0204] Among the cationic associative polymers, mention may be made of:

[0205] (a) Cationic associative polyurethane;

[0206] (b) The compound sold under the name Aqua CC by the company Noveon and corresponds to the INCI name Polyacrylate-1 Crosspolymer.

[0207] Polyacrylate-1 crosspolymer is the polymerization product of a monomer mixture comprising:

[0208] Di(C1-C4 alkyl)amino(C1-C6 alkyl)methacrylate,

[0209] one or more C1-C30 alkyl esters of (meth)acrylic acid,

[0210] Polyethoxylated C10-C30 alkyl methacrylate (20-25 mol of ethyleneoxy units),

[0211] 30 / 5 polyethylene glycol / polypropylene glycol allyl ether,

[0212] Hydroxy (C2-C6 alkyl) methacrylate, and

[0213] Ethylene glycol dimethacrylate.

[0214] (c) quaternized (poly) hydroxyethyl cellulose modified with a group containing at least one fatty chain, such as an alkyl, aralkyl or alkylaryl group containing at least 8 carbon atoms or a mixture thereof. The alkyl group carried by the above quaternized cellulose or hydroxyethyl cellulose preferably contains from 8 to 30 carbon atoms. The aryl group preferably indicates a phenyl, benzyl, naphthyl or anthracenyl group. Examples of quaternized alkyl hydroxyethyl cellulose containing C8-C30 fatty chains that may be mentioned include the product Quatrisoft LM Quatrisoft LM-X Quatrisoft LM-X (C12 alkyl) and Quatrisoft LM-X (C18 alkyl), and the product Crodacel sold by Croda Crodacel (C12 alkyl) and Crodacel (C18 alkyl) and the product Softcat SL sold by Aqualon

[0215] (d) Cationic polyvinyl lactam polymers.

[0216] Such polymers are described, for example, in patent application WO-00 / 68282.

[0217] As poly(vinyl lactam) polymers according to the invention, use is made in particular of vinylpyrrolidone / dimethylaminopropylmethacrylamide / dodecyldimethylmethacrylamidopropylammonium toluenesulfonate terpolymers, vinylpyrrolidone / dimethylaminopropylmethacrylamide / cocoyldimethylmethacrylamidopropylammonium toluenesulfonate terpolymers, vinylpyrrolidone / dimethylaminopropylmethacrylamide / lauryldimethylmethacrylamidopropylammonium toluenesulfonate or ammonium chloride terpolymers.

[0218] The amphoteric associative polymers are preferably chosen from those comprising at least one acyclic cationic unit. Even more particularly preferred are those prepared from or comprising from 1 to 20 mol %, preferably from 1.5 to 15 mol % and even more particularly from 1.5 to 6 mol % of fatty chain monomers relative to the total moles of monomers.

[0219] Amphiphilic associative polymers according to the invention are described and prepared, for example, in patent application WO 98 / 44012.

[0220] Among the amphoteric associative polymers according to the invention, preference is given to acrylic acid / (meth)acrylamidopropyltrimethylammonium chloride / stearyl methacrylate terpolymers.

[0221] The associative polymers of nonionic type that can be used according to the invention are preferably chosen from:

[0222] (a) Copolymers of vinylpyrrolidone and fatty-chain hydrophobic monomers, among which, by way of example, may be mentioned:

[0223] -Antaron, a product sold by ISP or Ganex (vinyl pyrrolidone / hexadecene copolymer);

[0224] -Antaron, a product sold by ISP or Ganex (vinyl pyrrolidone / eicosene copolymer);

[0225] (b) Copolymers of C1-C6 alkyl methacrylates or acrylates and amphiphilic monomers containing at least one fatty chain, such as those marketed under the name Antil Oxyethylened methyl acrylate / stearyl acrylate copolymer is sold as oxyethylenediamine. Or a copolymer having the INCI name "Acrylates / Beheneth-25 Methacrylate Copolymer", such as the product Novethix L-10 polymer from the Lubrizol Corporation.

[0226] (c) Copolymers of hydrophilic methacrylates or acrylates and hydrophobic monomers containing at least one fatty chain, for example polyethylene glycol methacrylate / lauryl methacrylate copolymers.

[0227] (d) Polyurethane polyethers comprising in their chain both hydrophilic blocks (generally of a polyoxyethylene nature) and hydrophobic blocks (which may be solely aliphatic sequences and / or cycloaliphatic and / or aromatic sequences).

[0228] (e) polymers having an aminoplast ether backbone containing at least one fatty chain, such as Pure Compound.

[0229] (f) cellulose or derivatives thereof modified with groups containing at least one fatty chain, such as alkyl, aralkyl or alkaryl groups or mixtures thereof, wherein the alkyl group is C8, and in particular:

[0230] * Nonionic alkyl hydroxyethyl cellulose, such as the products Natrosol Plus Grade 330CS and Polysurf 67 (C16 alkyl) sold by Aqualon Corporation;

[0231] * Nonionic nonoxyhydroxyethyl cellulose, such as the product Amercell HM-1500 sold by Amerchol;

[0232] * nonionic alkylcellulose, such as the product Bermocoll EHM 100 sold by Berol Nobel;

[0233] (g) Associative guar derivatives, for example hydroxypropyl guar modified with fatty chains, such as the product Esaflor HM 22 sold by the company Lamberti (modified with a C22 alkyl chain); the product Miracare XC 95-3 (modified with a C14 alkyl chain) and the product RE 205-146 (modified with a C20 alkyl chain) sold by the company Rhodia Chimie.

[0234] Preferably, the polyurethane polyether comprises at least two hydrocarbon-based lipophilic chains having 6 to 30 carbon atoms, separated by a hydrophilic block, which hydrocarbon-based chains may be side chains or chains at the ends of the hydrophilic blocks. In particular, one or more side chains may be envisaged. Furthermore, the polymer may comprise hydrocarbon-based chains at one or both ends of the hydrophilic block.

[0235] The polyurethane polyethers may be multiblock, in particular in triblock form. The hydrophobic blocks may be at each end of the chain (e.g. triblock copolymers with a hydrophilic central block) or distributed at the ends and in the chain (e.g. multiblock copolymers). These polymers may also be graft polymers or star polymers.

[0236] The fatty chain nonionic polyurethane polyethers can be triblock copolymers whose hydrophilic blocks are polyoxyethyleneated chains containing 50 to 1000 oxyethylene groups. These nonionic polyurethane polyethers contain urethane bonds between the hydrophilic blocks, which is where the name comes from.

[0237] By extension, the nonionic fatty chain polyurethane polyethers also include those in which the hydrophilic blocks are linked to the lipophilic blocks via other chemical bonds.

[0238] As an example of nonionic fatty chain polyurethane polyethers that can be used in the present invention, Rheolate containing urea functional groups sold by Rheox can also be used. or 208, 204 or 212, and Acrysol RM

[0239] Mention may also be made of the product Elfacos from Akzo containing C12-C14 alkyl chains. and products containing C18 alkyl chains Elfacos

[0240] The product DW from Rohm and Haas Company, which has a C20 alkyl chain and contains urethane bonds and is provided at a solid content of 20% in water, can also be used.

[0241] It is also possible to use solutions or dispersions of these polymers, in particular in water or in an aqueous / alcoholic medium. As examples of such polymers, mention may be made of the polymers sold by Veyron 255, 278 and 244. The products DW 1206F and DW 1206J sold by Rohm and Haas Company may also be used.

[0242] Polyurethane polyethers which can be used according to the invention are in particular those described in the article by G. Fonnum, J. Bakke and Fk. Hansen, Colloid Polym. Sci., 271, 380-389 (1993).

[0243] Even more particular preference is given to using polyurethane polyethers obtainable by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol containing 150 to 180 mol of ethylene oxide groups, (ii) stearyl alcohol or decanol, and (iii) at least one diisocyanate.

[0244] Such polyether polyurethanes are marketed in particular by Rohm and Haas under the name Aculyn and Aculyn Sales [Aculyn Aculyn is a polycondensate of polyethylene glycol with 150 or 180 mol of ethyleneoxy groups, stearyl alcohol and methylenebis(4-cyclohexyl isocyanate) (SMDI), 15% by weight in a matrix of maltodextrin (4%) and water (81%); It is a polycondensate of polyethylene glycol having 150 or 180 mol of ethyleneoxy groups, decanol and methylenebis(4-cyclohexyl isocyanate) (SMDI), 35% by weight in a mixture of propylene glycol (39%) and water (26%).

[0245] Preferably, the associative polymer is chosen from anionic associative polymers.

[0246] Preferably, the associative polymer is selected from acrylic acid or methacrylic acid homopolymers or copolymers.

[0247] Still more preferably, the associative polymer is chosen from polymers comprising i) at least one hydrophilic unit of the unsaturated ethylenic carboxylic acid type and ii) at least one hydrophobic unit of the type such as (C10-C30)alkyl esters of unsaturated carboxylic acids, copolymers comprising among their monomers: α,β-monoethylenically unsaturated carboxylic acids and esters of α,β-monoethylenically unsaturated carboxylic acids with oxyalkylened fatty alcohols, and mixtures thereof.

[0248] When associative polymers are present, they are preferably present in the composition according to the invention in a total content ranging from 0.01% to 15% by weight, more preferably from 0.05% to 10% by weight, better still from 0.1% to 8% by weight, even better still from 0.2% to 5% by weight and indeed even from 0.3% to 3% by weight relative to the total weight of the composition.

[0249] When an associative polymer is present, the associative polymer chosen from anionic associative polymers, preferably chosen from acrylic acid or methacrylic acid homopolymers or copolymers, is preferably present in the composition in a total content ranging from 0.01% to 15% by weight, more preferably from 0.05% to 10% by weight, better still from 0.1% to 8% by weight, even better still from 0.2% to 5% by weight and indeed even from 0.3% to 3% by weight relative to the total weight of the composition according to the invention.

[0250] Non-associated polysaccharides

[0251] The composition according to the invention may also comprise one or more non-associative polysaccharides, which are therefore different from the associative polymers described above.

[0252] Preferably, the composition according to the invention comprises one or more non-associative polysaccharides.

[0253] In the present invention, "polysaccharide" means a polymer composed of sugar units. "Sugar unit" means an oxygen-bearing hydrocarbon-based compound containing several alcohol functions, with or without aldehyde or ketone functions, and comprising at least 4 carbon atoms. The sugar units may optionally be modified by substitution and / or by oxidation and / or by dehydration.

[0254] The sugar units that may be included in the composition of the polysaccharide of the present invention are preferably derived from the following sugars: glucose, galactose, arabinose, rhamnose, mannose, xylose, fucose, anhydrogalactose, galacturonic acid, glucuronic acid, mannuronic acid, galactose sulfate, anhydrogalactose sulfate and fructose.

[0255] As non-associative polysaccharides, mention may in particular be made of the following polymers, alone or as a mixture:

[0256] a) Exudates from trees or shrubs, including:

[0257] - Gum arabic (branched polymer of galactose, arabinose, rhamnose and glucuronic acid);

[0258] - Gum ghatti (polymer derived from arabinose, galactose, mannose, xylose and glucuronic acid);

[0259] - Karaya gum (polymer derived from galacturonic acid, galactose, rhamnose and glucuronic acid);

[0260] - Tragacanth gum (polymer of galacturonic acid, galactose, fucose, xylose and arabinose);

[0261] b) Gums derived from algae, including:

[0262] - agar (polymer derived from galactose and anhydrogalactose);

[0263] - Alginates (polymers of mannuronic acid and polymers of glucuronic acid);

[0264] - carrageenan and furcellan (galactose sulfate polymers and anhydrogalactose sulfate polymers);

[0265] c) Gums derived from seeds or tubers, including:

[0266] - guar gum (polymer of mannose and galactose);

[0267] - Locust bean gum (polymer of mannose and galactose);

[0268] - Fenugreek gum (polymer of mannose and galactose);

[0269] - Tamarind gum (polymer of galactose, xylose and glucose);

[0270] - Konjac gum (polymer of glucose and mannose);

[0271] d) Microbial gums, including:

[0272] - Xanthan gum (polymer of glucose, mannose acetate, mannose / pyruvic acid and glucuronic acid);

[0273] - Gellan gum (polymer of partially acylated glucose, rhamnose and glucuronic acid);

[0274] - Scleroglucan gum (glucose polymer);

[0275] e) Polymers extracted from plants, including:

[0276] - cellulose (glucose polymer);

[0277] - starch (glucose polymer), and

[0278] -Inulin.

[0279] These polymers may be physically or chemically modified. As physical treatments, mention may be made in particular of thermal treatments. As chemical treatments, mention may be made of esterifications, etherifications, amidations and oxidations. These treatments make it possible to produce polymers which may in particular be nonionic, anionic or amphoteric.

[0280] In particular, guar gum, locust bean gum, starch and cellulose may be modified / treated.

[0281] The guar gum that can be used according to the invention can be modified with C1-C6 (poly)hydroxyalkyl groups. Among the C1-C6 (poly)hydroxyalkyl groups, mention may be made, by way of example, of hydroxymethyl, hydroxyethyl, hydroxypropyl and hydroxybutyl groups. These guar gums are well known in the prior art and can be prepared, for example, by reacting the corresponding alkylene oxides, for example propylene oxide, with guar gum in order to obtain a guar gum modified with hydroxypropyl groups. The degree of hydroxyalkylation preferably ranges from 0.4 to 1.2 and corresponds to the number of alkylene oxide molecules consumed by the number of free hydroxyl functions present on the guar gum.

[0282] Such guar gums, optionally modified with hydroxyalkyl groups, are sold, for example, by the chemical company Rhodia under the trade names Jaguar HP8, Jaguar HP60 and Jaguar HP120.

[0283] The plant source of starch that can be used in the present invention can be cereal or tuber.Therefore, starch is selected from, for example, corn starch, rice starch, oat starch, cassava starch, barley starch, potato starch, wheat starch, sorghum starch, pea starch or cassava starch.It is also possible to use the hydrolyzate of the starch mentioned above.Starch is preferably derived from potato.

[0284] Preference is given to using starch phosphates, in particular distarch phosphates or compounds rich in distarch phosphates, for example the products sold under the references Prejel VA-70-T AGGL (gelled hydroxypropyl tapioca distarch phosphate), or Prejel TK1 (gelled tapioca distarch phosphate) or Prejel 200 (gelled acetyl tapioca distarch phosphate) by Avebe, or Structure Zea (gelled corn distarch phosphate) from National Starch.

[0285] According to the present invention, amphoteric starches can also be used, which contain one or more anionic groups and one or more cationic groups. The anionic group and the cationic group can be bound to the same reaction site or different reaction sites of the starch molecule; they are preferably bound to the same reaction site. The anionic group can be a carboxylate, phosphate or sulfate type, preferably a carboxylate type. The cationic group can be a primary amine, a secondary amine, a tertiary amine or a quaternary amine type.

[0286] The polysaccharides that may be used according to the invention may be cellulose based polymers.

[0287] According to the invention, "cellulose-based polymer" means any polysaccharide compound having in its structure a sequence of glucose residues linked together via β-1,4 bonds; cellulose derivatives other than unsubstituted cellulose may be anionic, cationic, amphoteric or nonionic.

[0288] Cellulose-based polymers are also known as cellulose.

[0289] Thus, the cellulose-based polymers that can be used according to the invention can be chosen from unsubstituted celluloses, including those in microcrystalline form, and cellulose ethers.

[0290] Among the cellulose-based polymers, a distinction is made between cellulose ethers, cellulose esters and cellulose ether / esters.

[0291] Cellulose esters include inorganic esters of cellulose (cellulose nitrate, cellulose sulfate, cellulose phosphate, etc.), organic esters of cellulose (cellulose monoacetate, cellulose triacetate, cellulose amidopropionate, cellulose acetate butyrate, cellulose acetate propionate or cellulose acetate trimellitate, etc.), and mixed organic / inorganic esters of cellulose such as cellulose acetate butyrate sulfate and cellulose acetate propionate sulfate. Among the cellulose ester ethers, hydroxypropyl methylcellulose phthalate and ethyl cellulose sulfate may be mentioned.

[0292] Among the cellulose ethers, mention may be made of (C1-C4)alkylcelluloses, such as methylcellulose and ethylcellulose (e.g. Ethocel Standard 100 Premium from The Dow Chemical Company); (poly)hydroxy(C1-C4)alkylcelluloses, such as hydroxymethylcellulose, hydroxyethylcellulose (e.g. Natrosol 250HHR sold by Ashland) and hydroxypropylcellulose (e.g. Klucel EF from Aqualon); mixed (poly)hydroxy(C1-C4)alkyl(C1-C4)alkylcelluloses, such as hydroxypropylmethylcellulose (e.g. Methocel E4M from The Dow Chemical Company), hydroxyethylmethylcellulose, hydroxyethylethylcellulose (e.g. Bermocoll E481FQ from Akzo Nobel) and hydroxybutylmethylcellulose.

[0293] Among the anionic cellulose ethers, mention may be made of (poly)carboxy(C1-C4)alkylcelluloses and their salts. Mention may be made, by way of example, of carboxymethylcellulose, carboxymethylmethylcellulose (eg Blanose 7M from Aquaron) and carboxymethylhydroxyethylcellulose and its sodium salt.

[0294] Among the cationic cellulose ethers, mention may be made of cationic cellulose derivatives, such as cellulose copolymers or cellulose derivatives grafted with water-soluble quaternary ammonium monomers and described in particular in patent US 4 131 576, such as (poly)hydroxy(C1-C4)celluloses, for example hydroxymethylcellulose, hydroxyethylcellulose or hydroxypropylcellulose grafted in particular with methacryloylethyltrimethylammonium, methacrylamidopropyltrimethylammonium or dimethyldiallylammonium salts. Commercial products corresponding to this definition are more particularly marketed by National Starch under the name L200 and H 100 products for sale.

[0295] Preferably, the non-associative polysaccharide is selected from cellulose, guar gum, starch, alone or as a mixture, preferably from cellulose.

[0296] Better still, the non-associative polysaccharide is chosen from cellulose ethers, cellulose esters and cellulose ester ethers, alone or as a mixture, and is preferably chosen from cellulose ethers.

[0297] Particularly preferably, the non-associative polysaccharide is selected from (C1-C4) alkyl celluloses such as methyl cellulose and ethyl cellulose, (poly) hydroxy (C1-C4) alkyl celluloses such as hydroxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl cellulose; and mixed (poly) hydroxy (C1-C4) alkyl (C1-C4) alkyl celluloses such as hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, hydroxyethyl ethyl cellulose and hydroxybutyl methyl cellulose.

[0298] When non-associative polysaccharides are present, they are preferably present in the composition according to the invention in a total amount ranging from 0.01% to 15% by weight, more preferably from 0.05% to 10% by weight, better still from 0.1% to 8% by weight, even better still from 0.2% to 5% by weight and indeed even from 0.3% to 3% by weight relative to the total weight of the composition according to the invention.

[0299] When the non-associative polysaccharide is present, it is preferably present in the composition according to the invention in a total amount ranging from 0.01% to 15% by weight, more preferably from 0.05% to 10% by weight, better still from 0.1% to 8% by weight, even better still from 0.2% to 5% by weight and indeed even from 0.3% to 3% by weight relative to the total weight of the composition according to the invention.

[0300] When the non-associative polysaccharide is present, it is preferably present in the composition according to the invention in a total amount ranging from 0.01% to 15% by weight, more preferably from 0.05% to 10% by weight, better still from 0.1% to 8% by weight, even better still from 0.2% to 5% by weight and indeed even from 0.3% to 3% by weight relative to the total weight of the composition according to the invention.

[0301] Surfactants

[0302] The compositions according to the invention may comprise one or more surfactants.

[0303] Preferably, the compositions according to the invention comprise one or more surfactants.

[0304] These surfactants may preferably be selected from anionic surfactants, amphoteric surfactants, nonionic surfactants and cationic surfactants and / or mixtures thereof.

[0305] “ Anionic surfactants" means a surfactant comprising only anionic groups as ionic or ionizable groups. These anionic groups are preferably selected from the following groups: CO2H, CO2 - 、SO3H、SO3 - 、OSO3H、OSO3 - 、H2PO3、HPO3 - PO3 2- 、H2PO2、HPO2 - PO2 2- , POH and PO - .

[0306] As examples of anionic surfactants that can be used in the compositions according to the invention, mention may be made of alkyl sulfates, alkyl ether sulfates, alkyl amido ether sulfates, alkyl aryl polyether sulfates, monoglyceride sulfates, alkyl sulfonates, alkyl amide sulfonates, alkyl aryl sulfonates, α-olefin sulfonates, paraffin sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkyl amide sulfosuccinates, alkyl sulfoacetates, acyl sarcosinates, acyl glutamates, alkyl sulfosuccinamates, acyl isethionates and N-(C1-C4) alkyl N-acyl taurates, salts of alkyl monoesters of polyglycoside-polycarboxylic acids, acyl lactylates, salts of D-galactosiduronic acids, salts of alkyl ether carboxylic acids, salts of alkyl aryl ether carboxylic acids, salts of alkyl amido ether carboxylic acids; and the corresponding non-salified forms of all these compounds; the alkyl and acyl radicals of all these compounds (unless otherwise indicated) generally contain from 6 to 24 carbon atoms and the aryl radical generally indicates a phenyl radical.

[0307] Among the anionic surfactants, mention may also be made of the salts of fatty acids, in particular C8-C24 fatty acids, preferably C12-C20 fatty acids.

[0308] These compounds may be oxyethylenated and then preferably contain from 1 to 50 ethyleneoxy units.

[0309] Polyglycosides - C6-C 24 The salt of the alkyl monoester can be selected from C6-C 24 Alkyl polyglycoside-citrate, C6-C 24 Alkyl polyglycoside-tartrate and C6-C 24 Alkyl polyglycoside-sulfosuccinate.

[0310] When the anionic surfactants are in salt form, they may be selected from alkali metal salts (such as sodium or potassium salts, and preferably sodium salts), ammonium salts, amine salts and in particular amino alcohol salts or alkaline earth metal salts such as magnesium salts.

[0311] As examples of aminoalcohol salts, mention may in particular be made of monoethanolamine, diethanolamine and triethanolamine salts, monoisopropanolamine, diisopropanolamine or triisopropanolamine salts, 2-amino-2-methyl-1-propanol salts, 2-amino-2-methyl-1,3-propanediol salts and tris(hydroxymethyl)aminomethane salts.

[0312] Preference is given to using alkali metal or alkaline earth metal salts and in particular sodium or magnesium salts.

[0313] The anionic surfactant which is optionally present may be a mild anionic surfactant, ie an anionic surfactant which does not contain a sulfate functional group.

[0314] As mild anionic surfactants, mention may be made in particular of the following compounds and their salts, and also of their mixtures: polyoxyalkylened carboxylic acid alkyl ethers; polyoxyalkylened carboxylic acid alkyl aryl ethers; polyoxyalkylened carboxylic acid alkyl amido ethers, in particular those containing 2 to 50 ethyleneoxy groups; alkyl D-galactosiduronic acids; acyl sarcosinates, acyl glutamates; and alkyl polyglycoside carboxylates.

[0315] Use may most particularly be made of polyoxyalkylened carboxylic acid alkyl ethers, for example lauryl ether carboxylate (4.5 EO), for example sold under the name AKYPO RLM 45CA by Kao Corporation (KAO).

[0316] Among the anionic surfactants mentioned above, sulfated surfactants such as alkyl sulfates or alkyl ether sulfates, and acyl glutamates, salts of C12-C20 fatty acids are preferably used, and alkyl sulfates and salts of C12-C20 fatty acids are more preferred.

[0317] Can be used in the composition according to the present invention Amphoteric or zwitterionic surfactants Preferred are non-silicone surfactants and may in particular be optionally quaternized secondary or tertiary aliphatic amine derivatives, wherein the aliphatic group is a straight or branched chain containing from 8 to 22 carbon atoms, the amine derivative containing at least one anionic group, for example a carboxylate, sulfonate, sulfate, phosphate or phosphonate group.

[0318] Particular mention may be made of (C8-C 20 ) alkyl betaine, (C8-C 20 ) alkyl sulfobetaine, (C8-C 20 ) alkylamido (C1-C6) alkyl betaine and (C8-C 20 )alkylamido(C1-C6)alkylsulfonobetaine, and mixtures thereof.

[0319] Among the optionally quaternized secondary or tertiary aliphatic amine derivatives that can be used as defined above, mention may also be made of the compounds having the corresponding structures (III) and (IV) below:

[0320] R a -CONHCH2CH2-N + (R b )(R c )-CH2COO - ,M + ,X - (III)

[0321] In formula (III):

[0322] -R a denotes an acid R derived from preferably present in hydrolyzed coconut kernel oil a C of COOH 10 To C 30 alkyl or alkenyl; preferably, R a represents heptyl, nonyl or undecyl;

[0323] -R b represents β-hydroxyethyl;

[0324] -R c represents carboxymethyl;

[0325] -M + represents a cationic counterion derived from an alkali metal or alkaline earth metal such as sodium, an ammonium ion, or an ion derived from an organic amine; and

[0326] -X - represents an organic or inorganic anionic counterion, such as an anionic counterion selected from halides, acetates, phosphates, nitrates, (C1-C4)alkylsulfates, (C1-C4)alkylsulfonates or (C1-C4)alkylarylsulfonates, in particular methylsulfate and ethylsulfate; or alternatively, M + and X - does not exist;

[0327] R a '-CONHCH2CH2-N(B)(B')(IV)

[0328] In formula (IV):

[0329] -B represents a group -CH2CH2OX';

[0330] -B' represents the group -(CH2) z Y', where z = 1 or 2;

[0331] -X' represents a group -CH2COOH, -CH2-COOZ', -CH2CH2COOH or CH2CH2-COOZ', or a hydrogen atom;

[0332] -Y' represents a group -COOH, -COOZ' or -CH2CH(OH)SO3H or a group CH2CH(OH)SO3-Z';

[0333] -Z' represents a cationic counter ion derived from an alkali metal or alkaline earth metal such as sodium, an ammonium ion, or an ion derived from an organic amine;

[0334] -R a ' represents the acid R preferably present in coconut oil or hydrolyzed linseed oil a '-COOH C 10 To C 30 alkyl or alkenyl; preferably, R a ' is an alkyl group, especially C 17 Groups, and isomeric forms thereof, or unsaturated C 17 Group.

[0335] These compounds are classified in the CTFA Dictionary, 5th edition, 1993, under the names disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caproamphodiacetate, disodium capryloamphodiacetate, disodium cocoamphodipropionate, disodium lauroamphodipropionate, disodium caproamphodipropionate, disodium capryloamphodipropionate, lauroamphodipropionic acid and cocoamphodipropionic acid.

[0336] By way of example, mention may be made of the product sold by Rhodia under the trade name Cocoamphodiacetate sold by C2M Concentrate.

[0337] Compounds of formula (V) may also be used:

[0338] R a ”-NHCH(Y”)-(CH2) n CONH(CH2) n' -N(R d )(R e ) (V)

[0339] In formula (V):

[0340] -Y" represents a group -COOH, -COOZ" or -CH2CH(OH)SO3H or a group CH2CH(OH)SO3-Z";

[0341] -R d and R eindependently of one another represent a C1 to C4 alkyl group or a hydroxyalkyl group;

[0342] -Z" represents a cationic counter ion derived from an alkali metal or alkaline earth metal such as sodium, an ammonium ion, or an ion derived from an organic amine;

[0343] -R a " represents the acid R preferably present in coconut kernel oil or hydrolyzed linseed oil a -COOH C 10 To C 30 alkyl or alkenyl; and

[0344] -n and n' indicate an integer ranging from 1 to 3 independently of each other.

[0345] Among the compounds of formula (V), mention may be made of the compound classified in the CTFA dictionary under the name sodium diethylaminopropyl cocoyl aspartamide and sold under the name Chimexane HB by the company Chimex.

[0346] These compounds may be used alone or as a mixture.

[0347] Among the above-mentioned amphoteric or zwitterionic surfactants, (C8-C 20 ) alkyl betaine such as cocoyl betaine, (C8-C 20 ) alkylamido (C3-C8) alkyl betaine such as cocamidopropyl betaine, (C8-C 20 ) alkyl amphoacetate, (C8-C 20 ) alkyl amphodiacetates and mixtures thereof; and preferably (C8-C 20 ) alkyl betaine, (C8-C 20 )alkylamido (C3-C8) alkyl betaine and mixtures thereof.

[0348] Preferably, the amphoteric or zwitterionic surfactant is selected from (C8-C 20 ) alkyl betaine, (C8-C 20 ) alkylamido (C3-C8) alkyl betaine, and mixtures thereof,

[0349] The compositions of the present invention can be used Nonionic surfactants Described in particular in, for example, MR Porter, Handbook of Surfactants, Blackie & Son Publishers, Glasgow and London, 1991, pp. 116-178.

[0350] As examples of nonionic surfactants, mention may be made of the following compounds, either alone or as a mixture:

[0351] -oxyalkylene (C8-C 24 ) alkylphenol;

[0352] - saturated or unsaturated, linear or branched, oxyalkylenated or glycerolated C8-C 40 alcohol, preferably containing one or two fatty chains;

[0353] - saturated or unsaturated, linear or branched, oxyalkylened C8 to C 30 Fatty acid amides;

[0354] - saturated or unsaturated, linear or branched, C8 to C 30 Esters of acids and polyethylene glycols;

[0355] - fatty acid esters of sucrose;

[0356] - preferably saturated or unsaturated, linear or branched C8 to C 30 Oxyethylidene esters of acids and sorbitol;

[0357] -C8-C of Sorbitan 30 Fatty acid esters;

[0358] -Polyoxyethylidene sorbitan C8-C 30 Fatty acid esters;

[0359] -(C8-C 30 ) alkyl (poly) glucoside, (C8-C 30 )alkenyl (poly)glucoside, which is optionally oxyalkylened (0 to 10 oxyalkylene units) and contains from 1 to 15 glucose units, (C8-C 30 ) alkyl (poly) glucoside esters;

[0360] - saturated or unsaturated oxyethylenated vegetable oils;

[0361] - condensation products of ethyleneoxy and / or propyleneoxy;

[0362] -N-(C8-C 30 ) alkyl glucosamine and N-(C8-C 30 ) acylmethylglucosamine derivatives;

[0363] -Amine oxides.

[0364] They are particularly selected from alcohols, α-diols and (C1-C 20) alkylphenols, these compounds are ethoxylated, propoxylated or glycerolated and have at least one fatty chain containing, for example, from 8 to 24 carbon atoms and preferably from 8 to 18 carbon atoms, the number of ethyleneoxy or propyleneoxy groups can range, in particular, from 1 to 200 and the number of glycerol groups can range, in particular, from 1 to 30.

[0365] Mention may also be made of condensates of ethyleneoxy and propyleneoxy groups with fatty alcohols, ethoxylated fatty amides (preferably having from 1 to 30 ethyleneoxy units), polyglycerolated fatty amides (containing on average from 1 to 5, and in particular from 1.5 to 4, glycerol groups), fatty acid esters of sucrose, fatty acid esters of polyethylene glycol, oxyethylenated vegetable oils, N-(C6-C 24 (C10-C14 alkyl) glucosamine derivatives, amine oxides such as (C10-C14 alkyl) amine oxides or N-(C 10 -C 14 Acyl)aminopropylmorpholineoxide.

[0366] C8-C of sorbitan 30 And preferably C 12 -C 22 Fatty acid esters (particularly monoesters, diesters and triesters) may be selected from:

[0367] Sorbitan caprylate; Sorbitan cocoate; Sorbitan isostearate; Sorbitan laurate; Sorbitan oleate; Sorbitan palmitate; Sorbitan stearate; Sorbitan diisostearate; Sorbitan dioleate; Sorbitan distearate; Sorbitan sesquicaprylate; Sorbitan sesquiisostearate; Sorbitan sesquioleate; Sorbitan sesquistearate; Sorbitan triisostearate; Sorbitan trioleate; Sorbitan triisostearate.

[0368] C8-C 30 The esters (especially monoesters, diesters, triesters) of fatty acids with polyoxyethylened sorbitan are preferably selected from C8-C6 oxyethylened sorbitan having from 1 to 30 ethyleneoxy units, preferably from 2 to 20 ethyleneoxy units, still more preferably from 2 to 10 ethyleneoxy units. 30 Fatty acid esters.

[0369] Preferably, the C8-C 30 Fatty acid esters are selected from C 12 -C 18The esters of fatty acids with oxyethylidene sorbitan are in particular chosen from the oxyethylidene esters of lauric acid, myristic acid, palmitic acid and stearic acid with sorbitan.

[0370] Preferably, the C8-C 30 The fatty acid ester is selected from oxyethylated (4EO) sorbitan monolaurate (polysorbate-21), oxyethylated (20EO) sorbitan monolaurate (polysorbate-20), oxyethylated (20EO) sorbitan monopalmitate (polysorbate-40), oxyethylated (20EO) sorbitan monostearate (polysorbate-60), oxyethylated (4EO) sorbitan monostearate (polysorbate-70), oxyethylated (20EO) sorbitan monostearate (polysorbate-80), oxyethylated (20EO) sorbitan monostearate (polysorbate-90), oxyethylated (20EO) sorbitan monostearate (polysorbate-100), oxyethylated (20EO) sorbitan monostearate (polysorbate-110), oxyethylated (20EO) sorbitan monostearate (polysorbate-111), oxyethylated (20EO) sorbitan monostearate (polysorbate-112), oxyethylated (20EO) sorbitan monostearate (polysorbate-113), oxyethylated (20EO) sorbitan monostearate (polysorbate-114), oxyethylated (20EO) sorbitan monostearate (polysorbate-115), oxyethylated (20EO) sorbitan monostearate (polysorbate-116), oxyethylated (20EO) sorbitan monostearate (polysorbate-117), oxyethylated (20EO) sorbitan monostearate (polysorbate-118), oxyethylated (20EO) Sorbitan monostearate (polysorbate-61), oxyethylidene (20EO) sorbitan monooleate (polysorbate-80), oxyethylidene (5EO) sorbitan monooleate (polysorbate-81), oxyethylidene (20EO) sorbitan tristearate (polysorbate-65), oxyethylidene (20EO) sorbitan trioleate (polysorbate-85).

[0371] The nonionic surfactant is preferably selected from ethoxylated C8-C60 surfactants containing from 1 to 200 ethyleneoxy groups, preferably from 1 to 50 ethyleneoxy groups. 24 Fatty alcohol, (C6-C 24 Alkyl) polyglycosides, esters of saturated or unsaturated, linear or branched C8-C30 fatty acids with glycerol, C8-C 30 Esters of fatty acids with oxyethylidene sorbitan, and mixtures thereof, preferably selected from ethoxylated C8-C6- 24 Fatty alcohol, (C6-C 24 Alkyl) polyglycosides, esters of saturated or unsaturated, linear or branched C8-C30 fatty acids and glycerol.

[0372] More preferably, the nonionic surfactant is selected from ethoxylated C8-C8 ethyleneoxy groups containing from 1 to 200 ethyleneoxy groups, preferably from 1 to 50 ethyleneoxy groups. 24 Fatty alcohol.

[0373] In the composition according to the invention, it is possible to use Cationic surfactants Typically selected from optionally polyoxyalkylenated primary, secondary or tertiary fatty amine salts, quaternary ammonium salts, and mixtures thereof.

[0374] Fatty amines usually contain at least one C8-C 30 A hydrocarbon chain. Among the fatty amines that can be used according to the invention, mention may be made, for example, of stearylamidopropyldimethylamine and distearylamine.

[0375] As examples of quaternary ammonium salts, mention may in particular be made of:

[0376] - those corresponding to the following general formula (VI):

[0377]

[0378] Wherein the groups R8 to R 11 may be the same or different and represent a straight or branched aliphatic group containing from 1 to 30 carbon atoms, or an aromatic group such as an aryl group or an alkylaryl group. 11 At least one of contains from 8 to 30 carbon atoms and preferably from 12 to 24 carbon atoms. The aliphatic radical may contain heteroatoms such as, in particular, oxygen, nitrogen, sulfur and halogens.

[0379] Aliphatic groups are selected from C1-C30 alkyl, C1-C 30 Alkoxy, polyoxy (C2-C6) alkylene, C1-C 30 Alkylamide, (C 12 -C 22 )alkylamido (C2-C6)alkyl, (C 12 -C 22 ) alkyl acetate and C1-C 30 Hydroxyalkyl; X - is an anion selected from the group consisting of halides, phosphates, acetates, lactates, (C1-C4)alkyl sulfates and (C1-C4)alkyl sulfonates or (C1-C4)alkyl aryl sulfonates.

[0380] Among the quaternary ammonium salts of the formula (VI), preference is given firstly to tetraalkylammonium chlorides, for example dialkyldimethylammonium chloride or alkyltrimethylammonium chloride, in which the alkyl radical contains about 12 to 22 carbon atoms, in particular behenyltrimethylammonium chloride, distearyldimethylammonium chloride, cetyltrimethylammonium chloride or benzyldimethylstearylammonium chloride or, secondarily, to distearylethylhydroxyethylmethylammonium methosulfate, dipalmitoylethylhydroxyethylammonium methosulfate or distearylethylhydroxyethylammonium methosulfate or, finally, to palmitamidopropyltrimethylammonium chloride or stearamidopropyldimethyl(myristyl acetate)ammonium chloride, commercialized by the company Van Dyk under the name 70 sales.

[0381] - quaternary ammonium salts of imidazolines, for example those of the following formula (VII):

[0382]

[0383] wherein R12 represents an alkenyl or alkyl group containing from 8 to 30 carbon atoms, such as a tallow fatty acid derivative, R13 represents a hydrogen atom, a C1-C4 alkyl group, or an alkenyl or alkyl group containing from 8 to 30 carbon atoms, R14 represents a C1-C4 alkyl group, R15 represents a hydrogen atom or a C1-C4 alkyl group, and X - is an anion selected from the group consisting of halides, phosphates, acetates, lactates, (C1-C4)alkyl sulfates, and (C1-C4)alkyl sulfonates or (C1-C4)alkyl aryl sulfonates.

[0384] Preferably, R12 and R13 denote a mixture of alkenyl or alkyl groups containing from 12 to 21 carbon atoms, for example a tallow fatty acid derivative, R14 denotes a methyl group and R15 denotes a hydrogen atom. Such products are available, for example, from the company Rewo under the name W 75 for sale.

[0385] - quaternary diammonium or triammonium salts, in particular of the following formula (VIII):

[0386]

[0387] wherein R16 indicates an alkyl group containing approximately from 16 to 30 carbon atoms, which alkyl group is optionally hydroxylated and / or is interrupted by one or more oxygen atoms; R17 is selected from hydrogen, an alkyl group containing from 1 to 4 carbon atoms or a group -(CH2)3-N+(R16a)(R17a)(R18a), R16a, R17a, R18a, R18, R19, R20 and R21 are identical or different and are selected from hydrogen or an alkyl group containing from 1 to 4 carbon atoms, and X - is an anion selected from the group consisting of halides, acetates, phosphates, nitrates, (C1-C4)alkylsulfates, (C1-C4)alkylsulfonates or (C1-C4)alkylarylsulfonates, in particular methylsulfate and ethylsulfate.

[0388] Such compounds are, for example, Finquat CT-P (Quaternium 89) sold by the company Finetex and Finquat CT (Quaternium 75) sold by the company Finetex.

[0389] - quaternary ammonium salts containing one or more ester functions, such as those of the following formula (IX):

[0390]

[0391] Wherein: R22 is selected from C1-C6 alkyl and C1-C6 hydroxyalkyl or dihydroxyalkyl; R23 is selected from: group -C(O)R26, linear or branched, saturated or unsaturated C1-C22 hydrocarbon-based group R27, or hydrogen atom; R25 is selected from: group -C(O)R28, linear or branched, saturated or unsaturated C1-C6 hydrocarbon-based group R29, or hydrogen atom; R24, R26 and R28 are the same or different and are selected from linear or branched, saturated or Unsaturated C7-C21 hydrocarbon-based group; r, s and t are the same or different and are integers from 2 to 6, r1 and t1 are the same or different and are 0 or 1; r2+r1=2r and t1+t2=2t, y is an integer from 1 to 10, x and z are the same or different and are integers from 0 to 10, X- is an organic or inorganic simple or complex anion, provided that the sum of x+y+z is from 1 to 15, when x is 0, R23 indicates R27 and when z is 0, R25 indicates R29.

[0392] The alkyl group R22 may be linear or branched, and more particularly linear.

[0393] Preferably, R22 indicates a methyl group, an ethyl group, a hydroxyethyl group or a dihydroxypropyl group, and more particularly a methyl group or an ethyl group.

[0394] Advantageously, the sum of x+y+z is from 1 to 10.

[0395] When R23 is a hydrocarbon-based group R27, it may be longer and may have from 12 to 22 carbon atoms, or may be shorter and may have from 1 to 3 carbon atoms.

[0396] When R25 is a hydrocarbon-based group R29, it preferably has 1 to 3 carbon atoms.

[0397] Advantageously, R24, R26 and R28, identical or different, are chosen from linear or branched, saturated or unsaturated C11-C21 hydrocarbon-based groups, and more particularly from linear or branched, saturated or unsaturated C11-C21 alkyl and alkenyl groups.

[0398] Preferably, x and z may be the same or different and equal to 0 or 1.

[0399] Advantageously, y is equal to 1.

[0400] Preferably, r, s and t are identical or different, equal to 2 or 3, and even more particularly equal to 2.

[0401] Anion X -Preferred are halides (preferably chloride, bromide or iodide), (C1-C4)alkyl sulfates or (C1-C4)alkyl sulfonates or (C1-C4)alkyl aryl sulfonates. However, methanesulfonates, phosphates, nitrates, toluenesulfonates, anions derived from organic acids (such as acetate or lactate), or any other anion compatible with ammonium carrying an ester function may be used.

[0402] The anion X- is even more particularly chloride, methylsulfate or ethylsulfate.

[0403] In the composition according to the invention, ammonium salts of formula (XIII) are more particularly used in which: R22 indicates 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: a group -C(O)R26, a methyl, an ethyl or a group based on a C14-C22 hydrocarbon, or a hydrogen atom, R25 is chosen from: a group -C(O)R28, or a hydrogen atom, R24, R26 and R28 are identical or different and are chosen from linear or branched, saturated or unsaturated groups based on C13-C17 hydrocarbons, and are preferably chosen from linear or branched, saturated or unsaturated C13-C17 alkyl and alkenyl groups.

[0404] Advantageously, these hydrocarbon-based groups are linear.

[0405] Among the compounds of formula (XIII), salts, in particular chlorides or methylsulfates of diacyloxyethyl dimethylammonium, diacyloxyethyl hydroxyethyl methylammonium, monoacyloxyethyl dihydroxyethyl methylammonium, triacyloxyethyl methylammonium or monoacyloxyethyl hydroxyethyl dimethylammonium and mixtures thereof may be mentioned, for example. These acyl groups preferably have 14 to 18 carbon atoms and are more particularly derived from vegetable oils such as palm oil or sunflower oil. When the compound contains several acyl groups, these groups may be identical or different.

[0406] These products are obtained, for example, by direct esterification of triethanolamine, triisopropanolamine, alkyldiethanolamine or alkyldiisopropanolamine (which are optionally oxyalkylenated) with fatty acids or fatty acid mixtures of plant or animal origin, or by transesterification of their methyl esters. This esterification is followed by quaternization using alkylating agents such as alkyl halides (preferably methyl or ethyl halides), dialkyl sulfates (preferably dimethyl sulfate or diethyl sulfate), methyl methanesulfonate, methyl p-toluenesulfonate, chloroethylene glycol or chloroglycerol.

[0407] Such compounds are marketed, for example, by Henkel under the name Sold by Stepan Company under the name Sold by CECA under the name Sold or sold by Rewo-Witco under the name Sold by WE 18.

[0408] The compositions according to the invention may contain, for example, mixtures of quaternary ammonium monoesters, diesters and triester salts, the majority by weight being the diester salts.

[0409] It is also possible to use ammonium salts containing at least one ester function as described in patents US Pat. No. 4,874,554 and US Pat. No. 4,137,180.

[0410] It is also possible to use behenyl hydroxypropyltrimonium chloride, such as is sold under the name Quartamin BTC 131 by Kao Corporation.

[0411] Preferably, the ammonium salt containing at least one ester function contains two ester functions.

[0412] Among the cationic surfactants, it is more particularly preferred to choose cetyltrimethylammonium, behenyltrimethylammonium and dipalmitoylethylhydroxyethylmethylammonium salts, and mixtures thereof, and more particularly behenyltrimethylammonium chloride, cetyltrimethylammonium chloride, and dipalmitoylethylhydroxyethylammonium methosulfate, and mixtures thereof.

[0413] Preferably, the surfactant is selected from anionic surfactants and nonionic surfactants, and mixtures thereof, more preferably selected from anionic surfactants.

[0414] More preferably, the surfactant is selected from ethoxylated C8-C60-1, C80-1, C80-2, C80-3, C80-4, C80-5, C80-6, C80-7, C80-8, C80-9, C80-10, C80-11, C80-12, C80-13, C80-14, C80-15, C80-16, C80 24 Fatty alcohols, alkyl sulfates, salts of C12-C20 fatty acids, and mixtures thereof, are more preferably selected from alkyl sulfates, salts of C12-C20 fatty acids, and mixtures thereof.

[0415] According to a preferred embodiment, the composition comprises one or more surfactants selected from alkyl sulfates.

[0416] When surfactants are present, they are preferably present in the composition according to the invention in a total content ranging from 0.01% to 20% by weight, more preferably from 0.1% to 15% by weight, better still from 0.5% to 10% by weight, even better still from 1% to 8% by weight relative to the total weight of the composition.

[0417] When nonionic and / or anionic surfactants are present, they are preferably present in the composition according to the invention in a total content ranging from 0.01% to 20% by weight, more preferably from 0.1% to 15% by weight, better still from 0.5% to 10% by weight, even better still from 1% to 8% by weight relative to the total weight of the composition.

[0418] Chelating agents

[0419] The compositions according to the invention may comprise one or more chelating (or complexing) agents.

[0420] Preferably, the compositions according to the invention comprise one or more chelating agents.

[0421] The definition of "chelating agent" (or "complexing agent") is well known to those skilled in the art and refers to a compound or mixture of compounds that is capable of forming a complex with a metal ion. A complex is an inorganic complex in which a compound (chelating agent or complexing agent) coordinates to a metal ion, i.e., it forms one or more bonds with the metal ion (forming a ring that contains the metal ion).

[0422] Chelating agents (or complexing agents) generally contain at least two electron-donating atoms that are capable of forming bonds with metal ions.

[0423] In the context of the present invention, the chelating agent may be selected from carboxylic acids, preferably aminocarboxylic acids, phosphonic acids, preferably aminophosphonic acids, polyphosphoric acids, preferably linear polyphosphoric acids, their salts, and derivatives thereof.

[0424] These salts are especially alkali metal salts, alkaline earth metal salts, ammonium salts and substituted ammonium salts.

[0425] As examples of chelating agents based on carboxylic acids, the following compounds may be mentioned: diethylenetriaminepentaacetic acid (DTPA), ethylenediaminedisuccinic acid (EDDS) and trisodium ethylenediaminedisuccinate (such as Octaquest E30 from the company Octel), ethylenediaminetetraacetic acid (EDTA) and its salts (such as disodium EDTA, tetrasodium EDTA), ethylenediamine-N,N'-diglutaric acid (EDDG), glycinamide-N,N'-disuccinic acid (GADS), 2-hydroxypropylenediamine-N,N'-disuccinic acid (HPDDS), ethylenediamine-N,N'-bis(o-hydroxyphenylacetic acid) (EDDHA), N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid (HBED), nitrilotriacetic acid (NTA), methylglycinediacetic acid (MGDA), N-2-hydroxyethyl-N,N-diacetic acid and glyceryliminodiacetic acid (such as described in document EP-A-317). 542 and EP-A-399 133), iminodiacetic acid-N-2-hydroxypropylsulfonic acid and aspartic acid-N-carboxymethyl-N-2-hydroxypropyl-3-sulfonic acid (as described in EP-A-516 102), β-alanine-N,N'-diacetic acid, aspartic acid-N,N'-diacetic acid and aspartic acid-N-monoacetic acid (described in EP-A-509 382), chelating agents based on iminodisuccinic acid (IDSA) (as described in EP-A-509 382), ethanol diglycine, phosphonobutane tricarboxylic acid (such as the compound sold by Bayer under the reference Bayhibit AM), N,N-dicarboxymethylglutamic acid and its salts (such as tetrasodium glutamate diacetate (GLDA), such as Dissolvine GL38 or 45S from Akzo Nobel).

[0426] As examples of complexing agents based on monophosphonic acids or polyphosphonic acids, the following compounds may be mentioned: diethylenetriamine-penta(methylenephosphonic 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), ethane-1,1,2-triphosphonic acid (ETP), ethylenediaminetetramethylenephosphonic acid (EDTMP), hydroxyethane-1,1-diphosphonic acid (HEDP, or etidronic acid), and salts such as etidronic acid disodium, etidronic acid tetrasodium.

[0427] As examples of complexing agents based on polyphosphoric acid, the following compounds may be mentioned: sodium tripolyphosphate (STP), tetrasodium diphosphate, hexametaphosphoric acid, sodium metaphosphate, phytic acid.

[0428] According to one embodiment, useful chelating agents according to the present invention are phosphorus-based chelating agents, ie chelating agents comprising one or more phosphorus atoms, preferably at least two phosphorus atoms.

[0429] The phosphorus-based chelating agents used in the composition according to the invention are preferably chosen from:

[0430] - inorganic phosphorus-based derivatives, which are preferably chosen from alkali metal or alkaline earth metal (preferably alkali metal) phosphates and pyrophosphates, such as sodium pyrophosphate, potassium pyrophosphate, sodium pyrophosphate decahydrate; and alkali metal or alkaline earth metal (preferably alkali metal) polyphosphates, such as sodium hexametaphosphate, sodium polyphosphate, sodium tripolyphosphate, sodium trimetaphosphate; which are optionally hydrated, and mixtures thereof;

[0431] - Organic phosphorus-based derivatives, for example organic (poly)phosphates and (poly)phosphonates, such as etidronic acid and / or its alkali metal or alkaline earth metal salts, such as tetrasodium etidronate, disodium etidronate, and mixtures thereof.

[0432] Preferably, the phosphorus-based chelating agent is selected from linear or cyclic compounds comprising at least two phosphorus atoms covalently bonded together via at least one linking group L comprising at least one oxygen atom and / or at least one carbon atom.

[0433] Phosphorus-based chelating agents may be selected from inorganic phosphorus-based derivatives, which preferably contain at least two phosphorus atoms. More preferably, phosphorus-based chelating agents are selected from alkali metal or alkaline earth metal pyrophosphates, and even better selected from alkali metal pyrophosphates, in particular sodium pyrophosphate (also known as tetrasodium pyrophosphate).

[0434] Phosphorus-based chelating agents may be selected from organic phosphorus-based derivatives, which preferably contain at least two phosphorus atoms. More preferably, the phosphorus-based chelating agents are selected from etidronic acid (also known as 1-hydroxyethane-1,1-diphosphonic acid) and / or its alkali metal or alkaline earth metal salts, preferably alkali metal salts, such as tetrasodium etidronic acid and disodium etidronic acid.

[0435] Thus, preferably, the phosphorus-based chelating agent is selected from the group consisting of alkali metal pyrophosphates, etidronic acid and / or its alkali metal salts, and mixtures of these compounds.

[0436] Particularly preferably, the phosphorus-based chelating agent is selected from tetrasodium etidronate, disodium etidronate, etidronate, tetrasodium pyrophosphate, and mixtures of these compounds.

[0437] According to the present invention, the chelating agent is preferably selected from diethylenetriaminepentaacetic acid (DTPA) and its salts, diethylenediaminetetraacetic acid (EDTA) and its salts, ethylenediaminedisuccinic acid (EDDS) and its salts, etidronic acid and its salts, N,N-dicarboxymethylglutamic acid and its salts, N,N-dicarboxymethylglutamic acid and its salts (GLDA), and mixtures thereof.

[0438] Among the salts of these compounds, alkali metal salts and particularly sodium or potassium salts are preferred.

[0439] When chelating agents are present, they are preferably present in the composition in a total content ranging from 0.001% to 15% by weight, more preferably from 0.05% to 10% by weight, better still from 0.01% to 8% by weight, even better still from 0.05% to 5% by weight relative to the total weight of the composition.

[0440] Alkali

[0441] The composition according to the invention may comprise one or more inorganic, organic or hybrid alkaline agents.

[0442] Preferably, the composition according to the invention comprises one or more alkaline agents.

[0443] For the purposes of the present invention, the terms "alkalizing agent" and "basing agent" are used indiscriminately.

[0444] The inorganic alkalizing agent is preferably selected from aqueous ammonia, alkali metal carbonates or bicarbonates such as sodium (bi)carbonate and potassium (bi)carbonate, alkali metal or alkaline earth metal phosphates such as sodium phosphate or potassium phosphate, sodium hydroxide or potassium hydroxide, alkali metal or alkaline earth metal silicates or metasilicates such as sodium metasilicate, and mixtures thereof.

[0445] The organic alkalizing agent is preferably selected from alkanolamines, organic amines other than alkanolamines, oxyethylenediamine and / or oxypropylenediamine, 1,3-diaminopropane, spermine or spermidine, and mixtures thereof.

[0446] "Alkanolamine" means an organic amine comprising a primary, secondary or tertiary amine functional group and one or more linear or branched C1-C8 alkyl groups carrying one or more hydroxyl groups.

[0447] Organic amines selected from alkanolamines containing one to three identical or different C1-C4 hydroxyalkyl groups, such as monoalkanolamines, dialkanolamines or trialkanolamines, are particularly suitable for carrying out the present invention.

[0448] In particular, the alkanolamine is selected from monoethanolamine (MEA), diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, N,N-dimethylethanolamine, 2-amino-2-methyl-1-propanol, triisopropanolamine, 2-amino-2-methyl-propane-1,3-diol, 3-amino-1,2-propanediol, 3-dimethylamino-1,2-propanediol, tris(hydroxymethyl)aminomethane and mixtures thereof.

[0449] Organic amines can also be selected from heterocyclic organic amines. In addition to the histidine already mentioned in the amino acids, pyridine, piperidine, imidazole, triazole, tetrazole and benzimidazole can be mentioned in particular. Organic amines can also be selected from amino acid dipeptides. As amino acid dipeptides that can be used in the present invention, carnosine, anserine and balenine can be mentioned in particular. Organic amines can also be selected from compounds containing guanidine functional groups. In addition to arginine, as amines of this type that can be used in the present invention, creatine, creatinine, 1,1-dimethylguanidine, 1,1-diethylguanidine, guanidinoacetic acid, metformin, agmatine, n-amidoalanine, 3-guanidinopropionic acid, 4-guanidinobutyric acid and 2-([amino(imino)methyl]amino)ethane-1-sulfonic acid can be mentioned in particular.

[0450] In particular, guanidine carbonate or monoethanolamine hydrochloride can be used as hybrid compounds.

[0451] The alkali agent that can be used according to the present invention is preferably selected from alkanolamines, such as monoethanolamine, diethanolamine, triethanolamine; ammonia water, carbonates or bicarbonates such as sodium (bi) carbonate and potassium (bi) carbonate, alkali metal or alkaline earth metal silicates or metasilicates such as sodium silicate and sodium metasilicate, and mixtures thereof, more preferably selected from alkali metal or alkaline earth metal silicates or metasilicates such as sodium silicate and sodium metasilicate, and mixtures thereof.

[0452] In a particular embodiment, the composition according to the present invention does not contain ammonia.

[0453] When alkaline agents are present, they are preferably present in the composition according to the invention in a total content ranging from 0.1% to 50% by weight, more preferably from 1% to 40% by weight, better still from 5% to 35% by weight, even better still from 10% to 30% by weight relative to the total weight of the composition.

[0454] According to a specific embodiment, the composition according to the invention comprises at least one (meta)silicate. According to this embodiment, the total content of alkali metal or alkaline earth metal silicate or metasilicate, preferably sodium metasilicate or sodium silicate, ranges preferably from 0.1% to 50% by weight, more preferably from 1% to 40% by weight, better still from 5% to 35% by weight, even better still from 10% to 30% by weight, relative to the total weight of the composition.

[0455] Solvent

[0456] The composition according to the invention may also comprise at least one organic solvent.

[0457] As examples of organic solvents, mention may be made of, for example, linear or branched C2 to 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, and diethylene glycol monoethyl ether and monomethyl ether, and also aromatic alcohols or ethers, such as benzyl alcohol or phenoxyethanol, and mixtures thereof.

[0458] When organic solvents are present, they are preferably present in the composition in a total content ranging from 0.01% to 20% by weight, preferably from 0.05% to 15% by weight and preferably from 0.1% to 10% by weight relative to the total weight of the composition.

[0459] Preferably, the composition according to the invention is anhydrous. "Anhydrous composition" means a composition that does not contain any water or contains only very little water, in particular less than 0.5% by weight of water, especially less than 0.1%, even better still less than 0.05%, indeed even less than 0.01% of water, relative to the total weight of the composition. In particular, the composition according to the invention does not contain any water added during its preparation, the water that may be present being provided by the starting materials used to prepare the composition.

[0460] additive

[0461] The compositions according to the invention may optionally comprise one or more additives in addition to the compounds according to the invention and mention may be made among others of polymers other than associative polymers and non-associative polysaccharides, inorganic thickeners, antidandruff agents, antiseborrheic agents, agents for combating hair loss and / or for promoting hair growth, vitamins and provitamins (including panthenol), sunscreens, inorganic or organic pigments, plasticizers, solubilizers, opacifiers or pearlescent agents, antioxidants, perfumes or preservatives.

[0462] Of course, the person skilled in the art will take care to choose this or these optional further compounds such that the advantageous properties inherently associated with the composition according to the invention are not or not substantially adversely affected by the envisaged addition.

[0463] Each of the above additives may generally be present in an amount between 0% and 20% by weight relative to the total weight of the composition.

[0464] According to one embodiment, the composition just described does not contain hydrogen peroxide. Such a composition is intended to be mixed with a composition containing hydrogen peroxide when used.

[0465] The composition according to the invention is preferably in the form of a cream before being mixed with the composition comprising hydrogen peroxide.

[0466] Preferably, before being mixed with a composition comprising hydrogen peroxide, the composition according to the invention has a relative humidity of 1 s at 25°C. -1 A viscosity of greater than or equal to 100 poise (100 Pa.s), preferably greater than or equal to 130 poise (130 Pa.s), and more preferably between 130 and 250 poise (130 and 250 Pa.s), measured at a shear rate of 100 Pa.s; this viscosity can be obtained by means of a plate-plate geometry, The measurements were made using a Thermo Haake RS600 rotational rheometer with a 1 mm gap.

[0467] As a variant, the composition according to the invention may comprise hydrogen peroxide. When it comprises hydrogen peroxide, the composition is a ready-to-use composition.

[0468] According to a preferred embodiment, the ready-to-use composition comprises:

[0469] - one or more peroxide salts;

[0470] - one or more hydrocarbons having a melting point greater than or equal to 85°C;

[0471] one or more fatty substances other than hydrocarbons having a melting point greater than or equal to 85° C., present in a total content greater than or equal to 10% by weight relative to the total weight of the composition; and

[0472] -Hydrogen peroxide.

[0473] According to a specific embodiment, the ready-to-use composition comprises:

[0474] - one or more persulfates;

[0475] - one or more hydrocarbons having a melting point greater than or equal to 85°C;

[0476] one or more fatty substances other than hydrocarbons having a melting point greater than or equal to 85° C., present in a total content greater than or equal to 10% by weight relative to the total weight of the composition; and

[0477] -Hydrogen peroxide.

[0478] Preferably, the ready-to-use composition is also in the form of a cream.

[0479] Preferably, the pH of the ready-to-use composition ranges from 8 to 13, preferably from 9 to 12.

[0480] method

[0481] The invention also relates to a method for lightening keratin fibres, preferably human keratin fibres, in particular the hair, comprising the step of applying to said keratin fibres an effective amount of a composition as defined above.

[0482] Preferably, the composition to be applied to keratin fibres results from mixing, before use, a composition according to the invention not comprising hydrogen peroxide with a composition comprising hydrogen peroxide.

[0483] According to a preferred embodiment, the method according to the invention for lightening keratin fibers, preferably human keratin fibers, in particular hair, comprises:

[0484] (i) a step of mixing a composition A according to the invention as described above and not comprising hydrogen peroxide with a composition B comprising hydrogen peroxide,

[0485] (ii) A step of applying to the keratin fibers a composition resulting from the mixture obtained in step (i).

[0486] The composition resulting from the mixture of step (i) is referred to as a ready-to-use composition.

[0487] Such a ready-to-use composition may comprise one or more of those ingredients mentioned above. Such a ready-to-use composition may also comprise water, in particular from a composition comprising hydrogen peroxide.

[0488] The ready-to-use composition can be applied to the keratin fibers wet or dry.After the treatment, the keratin fibers are optionally rinsed with water, optionally washed with a shampoo and then rinsed with water, and then dried or left to dry.

[0489] This mixing step is preferably carried out at the time of use, just before applying the resulting mixed composition to the hair.

[0490] Preferably, compositions A and B are mixed in an A / B weight ratio ranging from 0.1 to 2, preferably from 0.3 to 1.5 and better still from 0.5 to 1.

[0491] Preferably, composition B comprises hydrogen peroxide in a content ranging from 0.1% to 50% by weight relative to the total weight of composition B, more particularly from 0.5% to 20% and even more preferably from 1% to 15%.

[0492] 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 more advantageously still more than 50% by weight of water.

[0493] It may also comprise one or more organic solvents chosen from those previously listed; these solvents, when they are present, more particularly represent from 0.1% to 30% by weight and preferably from 0.3% to 20% by weight relative to the weight of the oxidizing composition.

[0494] Composition B also preferably comprises one or more acidulants. Among the acidulants, mention may be made, by way of example, of inorganic or organic acids, such as hydrochloric acid, orthophosphoric acid, sulphuric acid, carboxylic acids, such as acetic acid, tartaric acid, citric acid or lactic acid, and sulphonic acids.

[0495] Composition B preferably comprises one or more fatty substances, such as those described above, preferably chosen from fatty alcohols, liquid hydrocarbons comprising more than 16 carbon atoms and mixtures thereof.

[0496] Composition B may also comprise surfactants and thickening polymers.

[0497] The pH of composition B (if it is aqueous) is generally less than 7, preferably between 1 and 5 and preferably between 1.5 and 4.5.

[0498] Reagent test kit

[0499] Another subject of the invention is a device with at least two compartments for lightening keratin fibers, comprising at least one first compartment containing a composition A as described above, and at least one second compartment containing a composition B comprising hydrogen peroxide as described above.

[0500] The compositions of the device according to the invention are packaged in separate compartments, optionally accompanied by identical or different suitable application tools, such as a fine brush, a coarse brush or a sponge.

[0501] The above-mentioned device may also be equipped with means for distributing the desired mixture on the hair, such as the device described in patent FR 2 586 913.

[0502] Finally, the invention relates to the use of a composition according to the invention as described above for lightening keratin fibres, and in particular the hair.

[0503] The following examples serve to illustrate the invention but are not limiting in nature.

[0504] Examples

[0505] In the following examples, all amounts are shown as percentages by weight of active material (AM) relative to the total weight of the composition (unless otherwise indicated).

[0506] Compositions A1 and A2

[0507] Composition A1 according to the invention and comparative composition A2 were prepared from the following ingredients, the contents of which are indicated in the table below:

[0508] [Table 1]

[0509]

[0510]

[0511] Compositions A1 and A2 are in the form of creams.

[0512] Cream stability

[0513] The stability of the cream over time is assessed during the "groove test". This makes it possible to indicate the degree of syneresis (release of oil) of the cream.

[0514] 140 g of cream were weighed into a 150 g speed mixing jar and then a stainless steel spatula was used to mark a groove of approximately 2 cm on the surface along the jar: the filling of the groove was observed over time (after 24 h and then 72 h).

[0515] For this test, the acceptable limit was set at 0.7 ml of oil in the groove, above which the level of syneresis was unacceptable.

[0516] For each cream A1 and A2, after 24 h and 72 h, the oil present in the grooves was withdrawn by pipette:

[0517] [Table 2]

[0518] A1 (the present invention) A2(Comparison) After 24 hours 0.5ml 1.2ml After 72 hours 0.6ml 1.5ml

[0519] The amount of oil present in the grooves is below the acceptable limit for composition A1 according to the invention, unlike the amount present in comparative composition A2.

[0520] The invention makes it possible to improve the degree of syneresis and therefore the stability of the composition over time.

[0521] Composition B

[0522] Composition B was prepared from the following ingredients, the amounts of which are indicated in the table below:

[0523] [Table 3]

[0524]

[0525] When used, compositions A1 and A2 are mixed with composition B in a weight ratio of 1+1.5, respectively, to obtain mixtures M1 and M2.

[0526] Use quality of the mixture

[0527] The mixture M2 obtained has a lower viscosity than that obtained with the mixture M1 according to the invention. There is more risk of run-off during the application of the mixture M2 than during the application of the mixture M1 according to the invention.

[0528] Brightening performance

[0529] Each of the mixtures M1 and M2 was then applied to natural chestnut brown hair tresses (tone depth 4) in an amount of 10 g of mixture per 1 g of hair tress.

[0530] After a leave-on time of 50 minutes at 33°C, the tresses are rinsed, then washed and dried in an oven at 60°C.

[0531] Mixture M1 does not dry up on the locks during the residence time.

[0532] A better brightening was observed with mixture M1 than with comparative mixture M2.

[0533] Furthermore, mixtures M1' and M2' were produced using compositions A1 and A2 stored at 45°C for 2 months, and these compositions were mixed with composition B at a weight ratio of 1+1.5, respectively, at the time of use.

[0534] As for the mixtures M1 and M2, each of the mixtures M1' and M2' was then applied to natural chestnut brown hair tresses (tone depth 4) in an amount of 10 g of mixture per 1 g of hair tress.

[0535] After a leave-on time of 50 minutes at 33°C, the tresses are rinsed, then washed and dried in an oven at 60°C.

[0536] The same level of brightening was achieved with mixture M1' as with mixture M1, whereas the brightening achieved with mixture M2' was not as good as that achieved with mixture M2.

[0537] Thus, the lightening efficacy of the mixture according to the invention is stable even after storage of composition A1 at 45° C. for 2 months, unlike comparative composition A2 which results in a deterioration of the lightening performance.

Claims

1. A composition comprising: - one or more peroxide salts; - one or more hydrocarbons having a melting point greater than or equal to 85°C, and one or more fatty substances other than hydrocarbons having a melting point greater than or equal to 85° C., present in a total content greater than or equal to 10% by weight relative to the total weight of the composition.

2. A composition according to the preceding claim, wherein The peroxide salt is selected from alkali metal persulfates, alkaline earth metal persulfates, ammonium persulfate and mixtures thereof; more preferably selected from (bis)tetrabutylammonium persulfate, barium persulfate, magnesium persulfate, calcium persulfate, sodium persulfate, potassium persulfate, ammonium persulfate and mixtures thereof; even more preferably selected from sodium persulfate, potassium persulfate, ammonium persulfate and mixtures thereof; even better selected from potassium persulfate, ammonium persulfate and mixtures thereof.

3. A composition according to any one of the preceding claims, wherein The total content of peroxygenated salts ranges from 1% to 60% by weight, preferably between 5% and 55% by weight, more preferably between 10% and 50% by weight, even more preferably from 20% to 45% by weight and better still from 30% to 40% by weight relative to the total weight of the composition.

4. A composition according to any one of the preceding claims, wherein The hydrocarbon having a melting point greater than or equal to 85° C. is selected from microcrystalline wax, polyethylene wax, Fischer-Tropsch wax, paraffin wax, ozokerite wax and mixtures thereof, and is preferably selected from polyethylene wax.

5. A composition according to any one of the preceding claims, wherein The hydrocarbon having a melting point greater than or equal to 85°C is chosen from ethylene homopolymers having a melting point greater than or equal to 85°C, preferably ranging from 85°C to 150°C, better still from 90°C to 120°C.

6. A composition according to any one of the preceding claims, wherein The total content of hydrocarbons with a melting point greater than or equal to 85° C. ranges from 0.1% to 30% by weight, preferably from 0.5% to 20% by weight, more preferably from 1% to 10% by weight, better still from 1.5% to 5% by weight, relative to the total weight of the composition.

7. A composition according to any one of the preceding claims, wherein The fatty substances other than hydrocarbons having a melting point greater than or equal to 85° C. are chosen from liquid fatty substances, solid fatty substances and mixtures thereof.

8. Composition according to any of the preceding claims, comprising 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, preferably from liquid hydrocarbons containing more than 16 carbon atoms, in particular liquid vaseline, liquid fatty alcohols and mixtures thereof, better still from liquid hydrocarbons containing more than 16 carbon atoms, in particular liquid vaseline.

9. Composition according to any one of the preceding claims, comprising at least one solid fatty substance other than a hydrocarbon having a melting point greater than or equal to 85° C., preferably chosen from solid fatty acids, solid fatty alcohols, solid esters of fatty acids and / or fatty alcohols, waxes, ceramides and mixtures thereof, preferably chosen from solid fatty acids, solid fatty alcohols and mixtures thereof.

10. A composition according to any one of the preceding claims, wherein The total content of fatty substances, other than hydrocarbons having a melting point greater than or equal to 85° C., ranges from 10 to 60% by weight, preferably from 12 to 50% by weight, more preferably 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.

11. A composition according to any one of the preceding claims, comprising an alkaline agent, preferably selected from aqueous ammonia, alkali metal carbonates or bicarbonates such as sodium (bi) carbonate and potassium (bi) carbonate, alkali metal or alkaline earth metal phosphates such as sodium phosphate or potassium phosphate, sodium hydroxide or potassium hydroxide, alkali metal or alkaline earth metal silicates or metasilicates such as sodium metasilicate and sodium silicate, and mixtures thereof, preferably selected from alkali metal or alkaline earth metal silicates or metasilicates such as sodium silicate or sodium metasilicate, and mixtures thereof.

12. A composition according to any one of the preceding claims, wherein The total content of the alkaline agent ranges from 0.1% to 50% by weight, more preferably from 1% to 40% by weight, better still from 5% to 35% by weight and even better still from 10% to 30% by weight relative to the total weight of the composition.

13. A composition according to any preceding claim which does not comprise hydrogen peroxide.

14. A composition according to any one of claims 1 to 12 comprising hydrogen peroxide.

15. A method for lightening keratin fibres, preferably human keratin fibres, in particular the hair, said method comprising applying to said keratin fibres a composition according to any one of the preceding claims.

16. A method for lightening keratin fibers, preferably human keratin fibers, in particular hair, comprising (i) a step of mixing a composition according to any one of claims 1 to 13 with a composition comprising hydrogen peroxide, (ii) a step of applying to the keratin fibers the composition resulting from the mixture obtained in step (i).

17. A device for lightening keratin fibers having at least two compartments, said device comprising at least one first compartment containing a composition according to any one of claims 1 to 13, and at least one second compartment containing a composition comprising hydrogen peroxide.

18. Use of a composition according to any one of claims 1 to 14 for lightening keratin fibres and in particular the hair.

Images