Composition comprising the combination of at least one fatty substance, an oxidation coupler and a mineral alkaline agent

Abstract

The invention relates to a composition comprising the combination of one or more fatty substances other than fatty acids, the total content of fatty substance other than fatty acids being greater than or equal to 20% by weight, relative to the total weight of the composition, one or more oxidation couplers, one or more mineral alkaline agents, the composition being free of oxidation base.

Description

Composition comprising the combination of at least one fatty substance, an oxidation coupler and a mineral alkaline agent

[0001] The invention relates to a composition comprising the combination of a fatty substance other than fatty acids in a particular content, an oxidation coupler and a mineral alkaline agent, the composition being free of oxidation base.

[0002] The invention also relates to a process for dyeing keratin fibres, notably the hair, using this composition.

[0003] Many people have sought for a long time to modify the colour of their hair and in particular to mask their grey hair.

[0004] It is known to dye keratin fibres, in particular human keratin fibres, such as the hair, in order to obtain “permanent” colourings, with dyeing compositions containing oxidation dye precursors, in particular oxidation bases, such as ortho- or para-phenylenediamines, ortho- or para-aminophenols, or heterocyclic compounds, such as pyrazoles, pyrazolinones or pyrazolopyridines. These oxidation bases are colourless or weakly coloured compounds which, in combination with oxidizing products, can give rise, by an oxidative coupling process, to coloured compounds.

[0005] It is also possible to vary the shades obtained with these oxidation bases by combining them with couplers or colouring modifiers. The variety of the molecules employed as oxidation bases and couplers makes it possible to obtain a rich palette of colours.

[0006] The permanent dyeing process thus consists in applying, to the keratin fibres, bases or a mixture of bases and couplers with hydrogen peroxide, as oxidizing agent, in leaving them to spread, and in then rinsing the fibres. The colourings resulting therefrom have the advantage of being permanent, strong and resistant to external agents, in particular to light, bad weather, washing, perspiration and rubbing.

[0007] However, it is still sought to increase the efficiency of the reaction of the oxidation dyes used during this process in order to improve their build-up on keratin fibres. In fact, such an improvement would make it possible in particular to reduce the contents of the oxidation dyes present in the dyeing compositions and / or to dispense with certain families of dyes, in particular para-phenylenediamines such as para-phenylenediamine and para-toluenediamine, and to use other families of dyes having a lower dyeing power, while obtaining good dyeing performance.

[0008] In this regard, it has been proposed to dispense with the presence of oxidation bases by using only couplers, optionally boosted by metal catalysts, but processes of this type are not entirely satisfactory from a dyeing property point of view. The dyeing power obtained is not yet completely satisfactory.

[0009] There is a real need for a composition for dyeing keratin fibres, in particular human keratin fibres such as the hair, which does not have the abovementioned drawbacks, i.e. which is capable of leading to an intense colouring with good persistence and also good coverage of grey hair and good selectivity, and which is capable of giving good dyeing performance, even after a period of storage.

[0010] These aims and others are achieved by the present invention, one subject of which is thus a composition comprising:

[0011] - one or more fatty substances other than fatty acids, the total content of fatty substances other than fatty acids being greater than or equal to 20% by weight, relative to the total weight of the composition;

[0012] - one or more mineral alkaline agents;

[0013] - one or more oxidation dyes, chosen from oxidation couplers;

[0014] the composition being free of oxidation base.

[0015] According to a preferred embodiment, the composition according to the invention is a composition for dyeing keratin fibres, notably the hair.

[0016] Another subject of the present invention is a process for dyeing keratin fibres in which the composition according to the invention is applied to said fibres.

[0017] The composition according to the invention may notably lead to powerful, intense and sparingly selective colourings, i.e. colourings that are uniform along the length of the fibre. It also allows good build-up of the colour.

[0018] This composition also makes possible particularly good coverage of depigmented keratin fibres, such as grey hair.

[0019] A subject of the invention is also a kit comprising, in a first compartment, a composition as defined previously and, in a second compartment, an oxidizing composition comprising one or more chemical oxidizing agents.

[0020] According to the invention, the term “chemical oxidizing agent” means an oxidizing agent other than atmospheric oxygen.

[0021] Other subjects, features, aspects and advantages of the invention will emerge even more clearly on reading the description and the examples that follow.

[0022] In the text hereinbelow, unless otherwise indicated, the limits of a range of values are included in that range, notably in the expressions “between” and “ranging from ... to ...”.

[0023] Moreover, the expression “at least one” used in the present description is equivalent to the expression “one or more”.Fatty substances

[0024] The composition according to the invention comprises one or more fatty substances other than fatty acids, the total content of fatty substance other than fatty acids being greater than or equal to 20% by weight, relative to the total weight of the composition.

[0025] “Fatty substance” is understood to mean an organic compound that is insoluble in water at 25°C and at atmospheric pressure (1.013×105 Pa) (solubility of less than 5% by weight, and preferably less than 1% by weight, even more preferentially less than 0.1% by weight). The fatty substances have in their structure at least one hydrocarbon chain including at least six carbon atoms and / or a sequence of at least two siloxane groups. In addition, the fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, for instance chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran (THF), liquid petroleum jelly or decamethylcyclopentasiloxane.

[0026] Advantageously, the fatty substances that may be used in the present invention are neither (poly)oxyalkylenated nor (poly)glycerolated.

[0027] Preferably, the fatty substances that are useful according to the invention are non-silicone fatty substances.

[0028] The term “non-silicone fatty substance” refers to a fatty substance not containing any Si-O bonds and the term “silicone fatty substance” refers to a fatty substance containing at least one Si-O bond.

[0029] The fatty substances other than fatty acids that are useful according to the invention may be liquid fatty substances (or oils) and / or solid fatty substances other than fatty acids.

[0030] The term “liquid fatty substance” is understood to mean a fatty substance having a melting point of less than or equal to 25°C at atmospheric pressure (1.013×105 Pa) and the term “solid fatty substance” is understood to mean a fatty substance having a melting point of greater than 25°C at atmospheric pressure (1.013×105 Pa).

[0031] For the purposes of the present invention, the melting point corresponds to the temperature of the most endothermic peak observed on thermal analysis (differential scanning calorimetry or DSC) as described in the standard ISO 11357-3; 1999. The melting point may be measured using a differential scanning calorimeter (DSC), for example the calorimeter sold under the name MDSC 2920 by TA Instruments. In the present patent application, all the melting points are determined at atmospheric pressure (1.013×105 Pa).

[0032] More particularly, the liquid fatty substance(s) other than fatty acids according to the invention are chosen from C6 to C16 liquid hydrocarbons, liquid hydrocarbons comprising more than 16 carbon atoms, nonsilicone oils of animal origin, oils of triglyceride type of plant or synthetic origin, fluoro oils, liquid fatty alcohols, liquid fatty acid and / or fatty alcohol esters other than triglycerides, silicone oils, and mixtures thereof.

[0033] It should be remembered that fatty alcohols, esters and acids exhibit more particularly at least one saturated or unsaturated, linear or branched, hydrocarbon group comprising from 6 to 40, better still from 8 to 30, carbon atoms, which is optionally substituted, in particular by one or more hydroxyl groups (in particular 1 to 4). If they are unsaturated, these compounds may comprise one to three conjugated or non-conjugated carbon-carbon double bonds.

[0034] As regards the C6 to C16 liquid hydrocarbons, they may be linear, branched, and optionally cyclic, and are preferably chosen from alkanes. Examples that may be mentioned include hexane, cyclohexane, undecane, dodecane, isododecane, tridecane or isoparaffins, such as isohexadecane or isodecane, and mixtures thereof.

[0035] The liquid hydrocarbons comprising more than 16 carbon atoms can be linear or branched, of mineral or synthetic origin, and are preferably chosen from liquid paraffins or liquid petroleum jelly (or mineral oil), polydecenes, hydrogenated polyisobutene, such as Parleam®, and mixtures thereof.

[0036] Mention may be made, as hydrocarbon oils of animal origin, of perhydrosqualene.

[0037] The triglyceride oils of plant or synthetic origin are preferably chosen from liquid fatty acid triglycerides including from 6 to 30 carbon atoms, for instance heptanoic or octanoic acid triglycerides, or alternatively, for example, sunflower oil, corn oil, soybean oil, marrow oil, grapeseed oil, sesame seed oil, hazelnut oil, apricot oil, macadamia oil, arara oil, castor oil, avocado oil, caprylic / capric acid triglycerides, for instance those sold by Stéarinerie Dubois or those sold under the names Miglyol® 810, 812 and 818 by Dynamit Nobel, jojoba oil and shea butter oil, and mixtures thereof.

[0038] As regards the fluoro oils, they may be chosen from perfluoromethylcyclopentane and perfluoro-1,3-dimethylcyclohexane, sold under the names Flutec® PC1 and Flutec® PC3 by BNFL Fluorochemicals; perfluoro-1,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the names PF 5050® and PF 5060® by 3M, or bromoperfluorooctyl sold under the name Foralkyl® by Atochem; nonafluoromethoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives such as 4-trifluoromethylperfluoromorpholine sold under the name PF 5052® by 3M.

[0039] The liquid fatty alcohols that are suitable for use in the invention are more particularly chosen from linear or branched, saturated or unsaturated alcohols, preferably unsaturated or branched alcohols, including from 6 to 40 carbon atoms and 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, undecylenyl alcohol and linoleyl alcohol, and mixtures thereof.

[0040] As regards the liquid fatty acid and / or fatty alcohol esters, other than the triglycerides mentioned previously, mention may be made notably of esters of saturated or unsaturated, linear C1 to C26 or branched C3 to C26 aliphatic mono- or polyacids and of saturated or unsaturated, linear C1 to C26 or branched C3 to C26 aliphatic mono- or polyalcohols, the total carbon number of the esters being greater than or equal to 6 and more advantageously greater than or equal to 10.

[0041] Preferably, for the esters of monoalcohols, at least one from among the alcohol and the acid from which the esters of the invention are derived is branched.

[0042] Mention may be made, among the monoesters, 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 or 2-octyldecyl palmitate; alkyl myristates, such as isopropyl 2-octyldodecyl myristate; isobutyl stearate; 2-hexyldecyl laurate, and mixtures thereof.

[0043] Preferably, among the monoesters of monoacids and of monoalcohols, use will be made of ethyl and isopropyl palmitates, alkyl myristates, such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isodecyl neopentanoate, isostearyl neopentanoate and mixtures thereof.

[0044] Still within the context of this variant, esters of C4-C22 dicarboxylic or tricarboxylic acids and of C1-C22 alcohols and esters of monocarboxylic, dicarboxylic or tricarboxylic acids and of C2-C26 dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols may also be used.

[0045] Mention may in particular be made of: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyldodecyl stearoyl stearate; pentaerythrityl monoricinoleate; pentaerythrityl tetraisononanoate; pentaerythrityl tetrapelargonate; pentaerythrityl tetraisostearate; pentaerythrityl tetraoctanoate; propylene glycol dicaprylate; propylene glycol dicaprate; tridecyl erucate; triisopropyl citrate; triisostearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; propylene glycol dioctanoate; neopentyl glycol diheptanoate; diethylene glycol diisononanoate; polyethylene glycol distearates, and mixtures thereof.

[0046] The composition can also comprise, as fatty ester, sugar esters and diesters of C6 to C30, preferably C12 to C22, fatty acids. It is recalled that the term “sugar” refers to oxygen-bearing hydrocarbon compounds bearing several alcohol functions, with or without aldehyde or ketone functions, and which include at least 4 carbon atoms. These sugars may be monosaccharides, oligosaccharides or polysaccharides.

[0047] Mention may be made, as suitable sugars, for example, of sucrose, glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose and derivatives thereof, in particular alkylated derivatives thereof, such as methylated derivatives, for example methylglucose.

[0048] Esters of sugars and of fatty acids can be chosen in particular from the group constituted of esters or mixtures of esters of the sugars described above and of saturated or unsaturated, linear or branched, C6 to C30, preferably C12 to C22, fatty acids. If they are unsaturated, these compounds may comprise one to three conjugated or non-conjugated carbon-carbon double bonds.

[0049] The esters according to this variant may also be chosen from mono-, di-, tri- and tetraesters, polyesters, and mixtures thereof.

[0050] These esters may be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates, arachidonates or mixtures thereof notably such as the mixed oleo-palmitate, oleo-stearate and palmito-stearate esters.

[0051] More particularly, use is made of mono- and diesters and notably of mono- or dioleates, mono- or distearates, mono- or dibehenates, mono- or dioleate-palmitates, mono- or dilinoleates, mono- or dilinolenates or mono- or dioleate-stearates of sucrose, of glucose or of methylglucose, and mixtures thereof.

[0052] Mention may be made, by way of example, of the product sold under the name Glucate® DO by Amerchol, which is a methylglucose dioleate.

[0053] Preferably, use will be made of a liquid ester of a monoacid and of a monoalcohol.

[0054] The silicone oils that may be used in the composition A according to the present invention may be volatile or non-volatile, cyclic, linear or branched silicone oils, which are unmodified or modified with organic groups, and preferably have a viscosity from 5×10-6to 2.5 m2 / s at 25°C, and preferably 1×10-5to 1 m2 / s.

[0055] Preferably, the silicone oils are chosen from polydialkylsiloxanes, notably polydimethylsiloxanes (PDMS), and liquid polyorganosiloxanes including at least one aryl group.

[0056] These silicone oils may also be organomodified. The organomodified silicone oils that may be used in accordance with the invention are preferably liquid silicones as defined previously that comprise in their structure one or more organofunctional groups attached via a hydrocarbon group, chosen, for example, from amine groups and alkoxy groups.

[0057] Organopolysiloxanes are defined in greater detail in Walter Noll’sChemistry and Technology of Silicones(1968), Academic Press. They may be volatile or non-volatile.

[0058] When they are volatile, the silicone oils are more particularly chosen from those with a boiling point of between 60°C and 260°C, and even more particularly from:

[0059] (i) cyclic polydialkylsiloxanes including from 3 to 7 and preferably from 4 to 5 silicon atoms. These are, for example, octamethylcyclotetrasiloxane, particularly sold under the name Volatile Silicone® 7207 by Union Carbide or Silbione® 70045 V2 by Rhodia, decamethylcyclopentasiloxane sold under the name Volatile Silicone® 7158 by Union Carbide, and Silbione® 70045 V5 by Rhodia, and mixtures thereof.

[0060] Mention may also be made of cyclocopolymers of the dimethylsiloxane / methylalkylsiloxane type, such as Volatile Silicone® FZ 3109 sold by Union Carbide.

[0061] Mention may also be made of mixtures of cyclic polydialkylsiloxanes with organosilicon compounds, such as the mixture of octamethylcyclotetrasiloxane and tetra(trimethylsilyl)pentaerythritol (50 / 50) and the mixture of octamethylcyclotetrasiloxane and oxy-1,1’-bis(2,2,2’,2’,3,3’-hexatrimethylsilyloxy)neopentane;

[0062] (ii) linear volatile polydialkylsiloxanes having 2 to 9 silicon atoms and having a viscosity of less than or equal to 5×10-6m² / s at 25°C. An example is decamethyltetrasiloxane, particularly sold under the name SH 200 by Toray Silicone. Silicones falling within this category are also described in the article published in Cosmetics and Toiletries, Vol. 91, Jan. 76, pages 27-32, Todd & ByersVolatile Silicone Fluids for Cosmetics.

[0063] Non-volatile polydialkylsiloxanes are preferably used.

[0064] These silicone oils are more particularly chosen from polydialkylsiloxanes, among which mention may be made mainly of polydimethylsiloxanes bearing trimethylsilyl end groups. The viscosity of the silicones is measured at 25°C according to the standard ASTM 445 Appendix C.

[0065] Among these polydialkylsiloxanes, mention may be made, in a non-limiting manner, of the following commercial products:

[0066] - the Silbione® oils of the 47 and 70 047 series or the Mirasil® oils sold by Rhodia, for instance the oil 70 047 V 500 000;

[0067] - the oils of the Mirasil® series sold by Rhodia;

[0068] - the oils of the 200 series from the company Dow Corning, such as DC200, with a viscosity of 60 000 mm2 / s;

[0069] - the Viscasil® oils from General Electric and certain oils of the SF series (SF 96, SF 18) from General Electric.

[0070] Mention may also be made of polydimethylsiloxanes bearing dimethylsilanol end groups, known under the name dimethiconol (CTFA), such as the oils of the 48 series from the company Rhodia.

[0071] The organomodified silicones that may be used in accordance with the invention are silicones as defined previously that comprise in their structure one or more organofunctional groups attached via a hydrocarbon group.

[0072] As regards the liquid polyorganosiloxanes including at least one aryl group, they may notably be polydiphenylsiloxanes, and polyalkylarylsiloxanes functionalized with the organofunctional groups mentioned previously.

[0073] The polyalkylarylsiloxanes are particularly chosen from polydimethyl / methylphenylsiloxanes and polydimethyl / diphenylsiloxanes that are linear and / or branched and that have a viscosity ranging from 1×10-5to 5×10-2m2 / s at 25°C.

[0074] Among these polyalkylarylsiloxanes, mention may be made, by way of example, of the products sold under the following names:

[0075] - the Silbione® oils of the 70 641 series from Rhodia;

[0076] - the oils of the Rhodorsil® 70 633 and 763 series from Rhodia;

[0077] - the oil Dow Corning 556 Cosmetic Grade Fluid from Dow Corning;

[0078] - the silicones of the PK series from Bayer, such as the product PK20;

[0079] - the silicones of the PN and PH series from Bayer, such as the products PN1000 and PH1000;

[0080] - certain oils of the SF series from General Electric, such as SF 1023, SF 1154, SF 1250 and SF 1265.

[0081] Among the organomodified silicones, mention may be made of polyorganosiloxanes including:

[0082] - 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 Q2 8220 and Dow Corning 929 or 939 by Dow Corning. The substituted amine groups are in particular C1 to C4 aminoalkyl groups;

[0083] - alkoxylated groups,

[0084] - hydroxyl groups.

[0085] The solid fatty substances other than fatty acids according to the invention preferably have a viscosity of greater than 2 Pa.s, measured at 25°C and at a shear rate of 1 s-1.

[0086] The solid fatty substance(s) other than fatty acids are preferably chosen from solid fatty alcohols, solid esters of fatty acids and / or of fatty alcohols, waxes, ceramides and mixtures thereof.

[0087] The term “fatty alcohol” means a long-chain aliphatic alcohol comprising from 6 to 40 carbon atoms, preferably from 8 to 30 carbon atoms, and comprising at least one hydroxyl group OH. These fatty alcohols are neither oxyalkylenated nor glycerolated.

[0088] The solid fatty alcohols may be saturated or unsaturated, and linear or branched, and include from 8 to 40 carbon atoms, preferably from 10 to 30 carbon atoms. Preferably, the solid fatty alcohols have the structure R-OH with R denoting a linear alkyl group, optionally substituted by one or more hydroxyl groups, comprising from 8 to 40, preferentially from 10 to 30, carbon atoms, better still from 10 to 30, or even from 12 to 24 atoms, even better still from 14 to 22 carbon atoms.

[0089] The solid fatty alcohols that may be used are preferably chosen from saturated or unsaturated, linear or branched, preferably linear and saturated, (mono)alcohols including from 8 to 40 carbon atoms, better still from 10 to 30, or even from 12 to 24, even better still from 14 to 22 carbon atoms.

[0090] The solid fatty alcohols capable of being used can be chosen from, alone or as a mixture: myristyl alcohol (or 1-tetradecanol); cetyl alcohol (or 1-hexadecanol); stearyl alcohol (or 1-octadecanol); arachidyl alcohol (or 1-eicosanol); behenyl alcohol (or 1-docosanol); lignoceryl alcohol (or 1-tetracosanol); ceryl alcohol (or 1-hexacosanol); montanyl alcohol (or 1-octacosanol); or myricyl alcohol (or 1-triacontanol).

[0091] Preferentially, the solid fatty alcohol is chosen 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 cetylstearyl or cetearyl alcohol.

[0092] The solid esters of fatty acids and / or of fatty alcohols capable of being used are preferably chosen from esters resulting from C9-C26 carboxylic fatty acids and / or from C9-C26 fatty alcohols.

[0093] Preferably, these solid fatty esters are esters of a linear or branched, saturated carboxylic acid including at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms, and of a linear or branched, saturated monoalcohol including at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms. The saturated carboxylic acids may optionally be hydroxylated, and are preferably monocarboxylic acids.

[0094] Use may also be made of esters of C4-C22 di- or tricarboxylic acids and of C1-C22 alcohols and of esters of mono-, di- or tricarboxylic acids and of C2-C26 di-, tri-, tetra- or pentahydroxy alcohols.

[0095] 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 pelargonate, 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.

[0096] Preferably, the solid esters of a fatty acid and / or of a fatty alcohol are chosen from C9-C26 alkyl palmitates, notably myristyl, cetyl or stearyl palmitate; C9-C26 alkyl myristates, such as cetyl myristate, stearyl myristate and myristyl myristate; and C9-C26 alkyl stearates, notably myristyl, cetyl and stearyl stearate; and mixtures thereof.

[0097] A wax, for the purposes of the present invention, is a lipophilic compound, which is solid at 25°C and atmospheric pressure, with a reversible solid / liquid change in state, having a melting point of greater than approximately 40°C and which can range up to 200°C, and exhibiting, in the solid state, an anisotropic crystal organization. In general, the size of the crystals of the wax is such that the crystals diffract and / or scatter light, conferring on the composition which comprises them a cloudy, more or less opaque, appearance. By bringing the wax to its melting point, it is possible to make it miscible with oils and to form a microscopically homogeneous mixture, but on returning the temperature of the mixture to room temperature, recrystallization of the wax, which is microscopically and macroscopically detectable (opalescence), is obtained.

[0098] In particular, the waxes that are suitable for use in the invention may be chosen from waxes of animal, plant or mineral origin, non-silicone synthetic waxes, and mixtures thereof.

[0099] Mention may particularly be made of hydrocarbon waxes, such as beeswax, particularly of biological origin, lanolin wax and Chinese insect waxes; rice bran wax, carnauba wax, candelilla wax, ouricury wax, esparto wax, berry wax, shellac wax, Japan wax and sumac wax; montan wax, orange wax, lemon wax, microcrystalline waxes, paraffins and ozokerite; polyethylene waxes, the waxes obtained by Fischer-Tropsch synthesis and waxy copolymers, and also esters thereof.

[0100] Mention may additionally be made of microcrystalline C20-C60 waxes, such as Microwax HW.

[0101] Mention may also be made of the MW 500 polyethylene wax sold under the reference Permalen 50-L Polyethylene.

[0102] Mention may also be made of the waxes obtained by catalytic hydrogenation of animal or plant oils containing linear or branched C8-C32 fatty chains. Among these waxes, mention may notably be made of isomerized jojoba oil such as trans-isomerized partially hydrogenated jojoba oil, notably the product manufactured or sold by Desert Whale under the commercial reference Iso-Jojoba-50®, hydrogenated sunflower oil, hydrogenated castor oil, hydrogenated coconut kernel oil, hydrogenated lanolin oil and bis(1,1,1-trimethylolpropane) tetrastearate, notably the product sold under the name Hest 2T-4S® by Heterene.

[0103] The waxes obtained by hydrogenation of castor oil esterified with cetyl alcohol, such as those sold under the names Phytowax Castor 16L64® and 22L73® by Sophim, may also be used.

[0104] A wax that may also be used is a C20 to C40 alkyl (hydroxystearyloxy)stearate (the alkyl group comprising from 20 to 40 carbon atoms), alone or as a mixture. Such a wax is notably sold under the names Kester Wax K 82 P®, Hydroxypolyester K 82 P® and Kester Wax K 80 P® by Koster Keunen.

[0105] It is also possible to use microwaxes in the compositions of the invention; mention may notably be made of carnauba microwaxes, such as the product sold under the name MicroCare 350® by Micro Powders, synthetic-wax microwaxes, such as the product sold under the name MicroEase 114S® by Micro Powders, microwaxes constituted of a mixture of carnauba wax and polyethylene wax, such as the products sold under the names Micro Care 300® and 310® by Micro Powders, microwaxes constituted of a mixture of carnauba wax and of synthetic wax, such as the product sold under the name Micro Care 325® by Micro Powders, polyethylene microwaxes, such as the products sold under the names Micropoly 200®, 220®, 220L® and 250S® by Micro Powders, and polytetrafluoroethylene microwaxes, such as the products sold under the names Microslip 519® and 519 L® by Micro Powders.

[0106] The waxes are preferably chosen from mineral waxes, such as paraffin wax, petroleum jelly wax, lignite wax or ozokerite; plant waxes, such as cocoa butter or cork fibre or sugar cane waxes, olive tree wax, rice wax, hydrogenated jojoba wax, ouricury wax, carnauba wax, candelilla wax, esparto wax, or absolute waxes of flowers, such as the essential wax of blackcurrant blossom sold by Bertin (France); waxes of animal origin, such as beeswaxes or modified beeswaxes (cera bellina), spermaceti, lanolin wax and lanolin derivatives; microcrystalline waxes; and mixtures thereof.

[0107] Ceramides or ceramide analogs, such as glycoceramides, capable of being used in the compositions 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.

[0108] The ceramides or analogues thereof that may be used preferably correspond to the following formula: R3CH(OH)CH(CH2OR2)(NHCOR1), in which:

[0109] R1denotes a linear or branched, saturated or unsaturated alkyl group, derived from C14-C30 fatty acids, it being possible for this group to be substituted with a hydroxyl group in the alpha position, or a hydroxyl group in the omega position esterified with a saturated or unsaturated C16-C30 fatty acid;

[0110] R2denotes a hydrogen atom, a (glycosyl)n group, a (galactosyl)m group or a sulfogalactosyl group, in which n is an integer ranging from 1 to 4 and m is an integer ranging from 1 to 8;

[0111] R3denotes a C15-C26 hydrocarbon group saturated or unsaturated in the alpha position, it being possible for this group to be substituted with one or more C1-C14 alkyl groups; it being understood that in the case of natural ceramides or glycoceramides, R3may also denote a C15-C26 α-hydroxyalkyl group, the hydroxyl group being optionally esterified with a C16-C30 α-hydroxy acid.

[0112] The ceramides that are more particularly preferred are the compounds for which R1denotes a saturated or unsaturated alkyl derived from C16-C22 fatty acids; R2denotes a hydrogen atom and R3denotes a saturated linear C15 group.

[0113] Preferentially, use is made of ceramides for which R1denotes a saturated or unsaturated alkyl group derived from C14-C30 fatty acids; R2denotes a galactosyl or sulfogalactosyl group; and R3denotes a -CH=CH-(CH2)12-CH3group.

[0114] Use may also be made of the compounds for which R1denotes a saturated or unsaturated alkyl radical derived from C12-C22 fatty acids; R2denotes a galactosyl or sulfogalactosyl radical and R3denotes a saturated or unsaturated C12-C22 hydrocarbon radical and preferably a -CH=CH-(CH2)12-CH3group.

[0115] Mention may also be made, as compounds which are particularly preferred, 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-stearoylphytosphingosine, 2-N-palmitoylaminohexadecane-1,3-diol, N-linoleoyldihydrosphingosine, N-oleoyldihydrosphingosine, N-palmitoyldihydrosphingosine, N-stearoyldihydrosphingosine, and N-behenoyldihydrosphingosine, N-docosanoyl-N-methyl-D-glucamine, cetylic acid N-(2-hydroxyethyl)-N-(3-cetyloxy-2-hydroxypropyl)amide and bis(N-hydroxyethyl-N-cetyl)malonamide; and mixtures thereof. N-Oleoyldihydrosphingosine will preferably be used.

[0116] The solid fatty substances other than fatty acids are preferably chosen from solid fatty alcohols, solid esters of fatty acids and / or of fatty alcohols, and mixtures thereof, more preferentially from solid fatty alcohols.

[0117] According to a preferred embodiment, the composition according to the invention comprises one or more liquid fatty substances other than fatty acids, preferentially chosen from liquid hydrocarbons containing more than 16 carbon atoms, plant oils, liquid fatty alcohols and liquid fatty esters, silicone oils and mixtures thereof.

[0118] Preferentially, the liquid fatty substance(s) other than fatty acids is / are chosen from liquid hydrocarbons comprising more than 16 carbon atoms, in particular liquid petroleum jelly and liquid fatty alcohols, and mixtures thereof.

[0119] According to another preferred embodiment, the composition according to the invention comprises one or more solid fatty substances other than fatty acids, preferentially chosen from solid fatty alcohols.

[0120] According to another preferred embodiment, the composition according to the invention comprises one or more liquid fatty substances other than fatty acids and one or more solid fatty substances, preferentially at least one liquid hydrocarbon comprising more than 16 carbon atoms and at least one solid fatty alcohol.

[0121] Preferably, the total content of the fatty substance(s) other than fatty acids is greater than or equal to 25% by weight, more preferentially greater than or equal to 30% by weight, better still greater than or equal to 35% by weight, even better still greater than or equal to 40% by weight, relative to the total weight of the composition.

[0122] Preferably, the total content of the liquid fatty substance(s) other than fatty acids is greater than or equal to 20% by weight, preferably greater than or equal to 25% by weight, more preferentially greater than or equal to 30% by weight, better still greater than or equal to 35% by weight, even better still greater than or equal to 40% by weight, relative to the total weight of the composition.

[0123] In a particularly preferred embodiment, the total content of the liquid fatty substance(s) other than fatty acids chosen from liquid hydrocarbons comprising more than 16 carbon atoms is greater than or equal to 20% by weight, preferably greater than or equal to 25% by weight, more preferentially greater than or equal to 30% by weight, better still greater than or equal to 35% by weight, even better still greater than or equal to 40% by weight, relative to the total weight of the composition.Oxidation couplers

[0124] The composition according to the invention comprises one or more oxidation couplers (or coupling agents).

[0125] Mention may in particular be made, among oxidation couplers, of meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalene-based coupling agents and heterocyclic coupling agents, and also the corresponding addition salts.

[0126] Mention may be made, for example, of 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, 2-amino-4-(β-hydroxyethylamino)-1-methoxybenzene, 1,3-diaminobenzene, 1,3-bis(2,4-diaminophenoxy)propane, 3-ureidoaniline, 3-ureido-1-dimethylaminobenzene, sesamol, α-naphthol, 2-methyl-1-naphthol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 2-amino-3-hydroxypyridine, 6-hydroxybenzomorpholine, 3,5-diamino-2,6-dimethoxypyridine, hydroxyethyl-3,4-methylenedioxyaniline, 2-amino-5-ethylphenol, 2,6-bis(β-hydroxyethylamino)toluene, 6-hydroxyindoline, 2,6-dihydroxy-4-methylpyridine, 1H-3-methylpyrazol-5-one, 1-phenyl-3-methylpyrazol-5-one, 2,6-dimethylpyrazolo[1,5-b][1,2,4]triazole, 2,6-dimethyl[3,2-c][1,2,4]triazole, 6-methylpyrazolo[1,5-a]benzimidazole, 2-methyl-5-aminophenol, 5-N-(β-hydroxyethyl)amino-2-methylphenol, 3-aminophenol or 3-amino-2-chloro-6-methylphenol, the corresponding addition salts with an acid and the corresponding mixtures, the solvates, the solvates of the salts thereof, and the mixtures thereof.

[0127] In general, the addition salts of the couplers that may be used in the context of the invention are chosen in particular from the addition salts with an acid such as the hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates and acetates.

[0128] Preferably, the composition according to the present invention comprises one or more oxidation couplers chosen from 1,3-dihydroxy-2-methylbenzene, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, α-naphthol, 6-hydroxyindole, 6-hydroxybenzomorpholine, 3-aminophenol, addition salts thereof, solvates thereof and / or solvates of the salts thereof, and mixtures thereof, even more preferably from 2,4-diamino-1-(β-hydroxyethyloxy)benzene, α-naphthol, 6-hydroxyindole, addition salts thereof, solvates thereof and / or solvates of the salts thereof, and mixtures thereof.

[0129] The addition salts of the oxidation couplers are chosen especially from the addition salts with an acid, such as the hydrochlorides, hydrobromides, sulfates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates and acetates, and the addition salts with a base such as sodium hydroxide, potassium hydroxide, ammonium hydroxide, amines or alkanolamines.

[0130] The oxidation couplers according to the invention are preferably other than 5,6 -dihydroxyindole.

[0131] The oxidation couplers according to the invention are preferably other than melanin precursors.

[0132] Preferably, the content of oxidation couplers ranges from 0.001% to 20% by weight, more preferentially from 0.005% to 15% by weight, better still from 0.01% to 10% by weight, even better still from 0.05% to 5% by weight, and even better still from 0.1% to 3% by weight, relative to the total weight of the composition.

[0133] The composition according to the invention is free of oxidation base, that is to say it comprises less than 0.001% by weight in total of oxidation base, preferably less than 0.0001% by weight, even better still does not comprise any oxidation base at all (0%).

[0134] Such oxidation bases are for example para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases and the corresponding addition salts.

[0135] Among the para-phenylenediamines are, for example, para-phenylenediamine, para-toluenediamine, 2-chloro-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl-para-phenylenediamine, 2,5-dimethyl-para-phenylenediamine, N,N-dimethyl-para-phenylenediamine, N,N-diethyl-para-phenylenediamine, N,N-dipropyl-para-phenylenediamine, 4-amino-N,N-diethyl-3-methylaniline, N,N-bis(β-hydroxyethyl)-para-phenylenediamine, 4-N,N-bis(β-hydroxyethyl)amino-2-methylaniline, 4-N,N-bis(β-hydroxyethyl)amino-2-chloroaniline, 2-β-hydroxyethyl-para-phenylenediamine, 2-methoxymethyl-para-phenylenediamine, 2-γ-hydroxypropyl-para-phenylenediamine, 2-fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N-(β-hydroxypropyl)-para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N,N-dimethyl-3-methyl-para-phenylenediamine, N-ethyl-N-(β-hydroxyethyl)-para-phenylenediamine, N-(β,γ-dihydroxypropyl)-para-phenylenediamine, N-(4'-aminophenyl)-para-phenylenediamine, N-phenyl-para-phenylenediamine, 2-β-hydroxyethyloxy-para-phenylenediamine, 2-β-acetylaminoethyloxy-para-phenylenediamine, N-(β-methoxyethyl)-para-phenylenediamine, 4-aminophenylpyrrolidine, 2-thienyl-para-phenylenediamine, 2-β-hydroxyethylamino-5-aminotoluene and 3-hydroxy-1-(4'-aminophenyl)pyrrolidine, and the corresponding addition salts with an acid, and solvates thereof.

[0136] The bis(phenyl)alkylenediamines include, for example, N,N’-bis(β-hydroxyethyl)-N,N’-bis(4’-aminophenyl)-1,3-diaminopropanol, N,N’-bis(β-hydroxyethyl)-N,N’-bis(4’-aminophenyl)ethylenediamine, N,N’-bis(4-aminophenyl)tetramethylenediamine, N,N’-bis(β-hydroxyethyl)-N,N’-bis(4-aminophenyl)tetramethylenediamine, N,N’-bis(4-methylaminophenyl)tetramethylenediamine, N,N’-bis(ethyl)-N,N’-bis(4’-amino-3’-methylphenyl)ethylenediamine and 1,8-bis(2,5-diaminophenoxy)-3,6-dioxaoctane, the corresponding addition salts with an acid, and the solvates thereof.

[0137] Among the para-aminophenols are, for example, para-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 4-amino-3-chlorophenol, 4-amino-3-hydroxymethylphenol, 4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol, 4-amino-2-(β-hydroxyethylaminomethyl)phenol and 4-amino-2-fluorophenol, the corresponding addition salts with an acid, and the solvates thereof.

[0138] The ortho-aminophenols include, for example, 2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol and 5-acetamido-2-aminophenol, the corresponding addition salts with an acid, and the solvates thereof.

[0139] The heterocyclic bases include, for example, pyridine, pyrimidine and pyrazole derivatives.

[0140] The pyridine derivatives include the compounds for example described in the patents GB 1 026 978 and GB 1 153 196, for example 2,5-diaminopyridine, 2-(4-methoxyphenyl)amino-3-aminopyridine and 3,4-diaminopyridine, the corresponding addition salts with an acid, and the solvates thereof.

[0141] Other pyridine oxidation bases are, for example, 3-aminopyrazolo[1,5-a]pyridine oxidation bases or the corresponding addition salts described, for example, in patent application FR 2 801 308. Examples that may be mentioned include pyrazolo[1,5-a]pyrid-3-ylamine, 2-acetylaminopyrazolo[1,5-a]pyrid-3-ylamine, 2-(morpholin-4-yl)pyrazolo[1,5-a]pyrid-3-ylamine, 3-aminopyrazolo[1,5-a]pyridine-2-carboxylic acid, 2-methoxypyrazolo[1,5-a]pyrid-3-ylamine, (3-aminopyrazolo[1,5-a]pyrid-7-yl)methanol, 2-(3-aminopyrazolo[1,5-a]pyrid-5-yl)ethanol, 2-(3-aminopyrazolo[1,5-a]pyrid-7-yl)ethanol, (3-aminopyrazolo[1,5-a]pyrid-2-yl)methanol, 3,6-diaminopyrazolo[1,5-a]pyridine, 3,4-diaminopyrazolo[1,5-a]pyridine, pyrazolo[1,5-a]pyridine-3,7-diamine, 7-(morpholin-4-yl)pyrazolo[1,5-a]pyrid-3-ylamine, pyrazolo[1,5-a]pyridine-3,5-diamine, 5-(morpholin-4-yl)pyrazolo[1,5-a]pyrid-3-ylamine, 2-[(3-aminopyrazolo[1,5-a]pyrid-5-yl)(2-hydroxyethyl)amino]ethanol, 2-[(3-aminopyrazolo[1,5-a]pyrid-7-yl)(2-hydroxyethyl)amino]ethanol, 3-aminopyrazolo[1,5-a]pyridin-5-ol, 3-aminopyrazolo[1,5-a]pyridin-4-ol, 3-aminopyrazolo[1,5-a]pyridin-6-ol, 3-aminopyrazolo[1,5-a]pyridin-7-ol, 2-β-hydroxyethoxy-3-aminopyrazolo[1,5-a]pyridine and 2-(4-dimethylpiperazinium-1-yl)-3-aminopyrazolo[1,5-a]pyridine; the corresponding addition salts, and the solvates thereof.

[0142] The pyrimidine derivatives include the compounds described, for example, in patents DE 2359399, JP 88-169571, JP 05-63124 and EP 0 770 375 or patent application WO 96 / 15765, such as 2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triaminopyrimidine and addition salts thereof and tautomeric forms thereof, when a tautomeric equilibrium exists.

[0143] Among the pyrazole derivatives are the compounds described in patents DE 3843892 and DE 4133957 and patent applications WO 94 / 08969, WO 94 / 08970, FR-A-2 733 749 and DE 195 43 988, for instance 4,5-diamino-1-methylpyrazole, 4,5-diamino-1-(β-hydroxyethyl)pyrazole, 3,4-diaminopyrazole, 4,5-diamino-1-(4'-chlorobenzyl)pyrazole, 4,5-diamino-1,3-dimethylpyrazole, 4,5-diamino-3-methyl-1-phenylpyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, 4-amino-1,3-dimethyl-5-hydrazinopyrazole, 1-benzyl-4,5-diamino-3-methylpyrazole, 4,5-diamino-3-tert-butyl-1-methylpyrazole, 4,5-diamino-1-tert-butyl-3-methylpyrazole, 4,5-diamino-1-(β-hydroxyethyl)-3-methylpyrazole, 4,5-diamino-1-ethyl-3-methylpyrazole, 4,5-diamino-1-ethyl-3-(4'-methoxyphenyl)pyrazole, 4,5-diamino-1-ethyl-3-hydroxymethylpyrazole, 4,5-diamino-3-hydroxymethyl-1-methylpyrazole, 4,5-diamino-3-hydroxymethyl-1-isopropylpyrazole, 4,5-diamino-3-methyl-1-isopropylpyrazole, 4-amino-5-(2'-aminoethyl)amino-1,3-dimethylpyrazole, 3,4,5-triaminopyrazole, 1-methyl-3,4,5-triaminopyrazole, 3,5-diamino-1-methyl-4-methylaminopyrazole and 3,5-diamino-4-(β-hydroxyethyl)amino-1-methylpyrazole, the corresponding addition salts, and the solvates. Mention may also be made of 4,5-diamino-1-(β-methoxyethyl)pyrazole.

[0144] Among the pyrazole derivatives, mention may also be made of diamino-N,N-dihydropyrazolopyrazolones and in particular those described in patent application FR-A-2 886 136, such as the following compounds and the corresponding addition salts: 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-ethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-(pyrrolidin-1-yl)-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 4,5-diamino-1,2-dimethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-diethyl-1,2-dihydropyrazol-3-one, 4,5-diamino-1,2-di(2-hydroxyethyl)-1,2-dihydropyrazol-3-one, 2-amino-3-(2-hydroxyethyl)amino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2-amino-3-dimethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one, 2,3-diamino-5,6,7,8-tetrahydro-1H,6H-pyridazino[1,2-a]pyrazol-1-one, 4-amino-1,2-diethyl-5-(pyrrolidin-1-yl)-1,2-dihydropyrazol-3-one, 4-amino-5-(3-dimethylaminopyrrolidin-1-yl)-1,2-diethyl-1,2-dihydropyrazol-3-one and 2,3-diamino-6-hydroxy-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one.Mineral alkaline agent

[0145] The composition according to the invention comprises one or more mineral alkaline agents.

[0146] For the purposes of the present invention, the terms “alkaline agent” and “basifying agent” are used interchangeably.

[0147] The mineral basifying agent(s) are preferably chosen from ammonium hydroxide, carbonates or hydrogen carbonates (or bicarbonates) of ammonium, or of alkali or alkaline-earth metals, alkali or alkaline-earth metal phosphates, alkali or alkaline-earth metal hydroxides, alkali or alkaline-earth metal silicates or metasilicates, and mixtures thereof.

[0148] The ammonium, alkali metal or alkaline-earth metal carbonates and hydrogen carbonates may be chosen from sodium, potassium, calcium, magnesium or ammonium carbonates or hydrogen carbonates and mixtures thereof, preferably from sodium, potassium and ammonium carbonates or hydrogen carbonates and mixtures thereof.

[0149] The alkali metal or alkaline-earth metal phosphates may be chosen from sodium and potassium phosphates and mixtures thereof.

[0150] The alkali metal or alkaline-earth metal hydroxides can be chosen from sodium hydroxide, potassium hydroxide and mixtures thereof.

[0151] The alkali metal or alkaline-earth metal silicates may be chosen from sodium silicates, in particular sodium metasilicate, potassium silicates, calcium silicates, and mixtures thereof.

[0152] Preferably, the mineral alkaline agent is ammonium hydroxide.

[0153] The total content of the mineral alkaline agent(s) preferably ranges from 0.1% to 30% by weight, more preferentially from 1% to 20% by weight, better still from 2% to 15% by weight, even better still from 3% to 10% by weight, relative to the total weight of the composition.

[0154] The total ammonium hydroxide content preferably ranges from 0.1% to 30% by weight, more preferentially from 1% to 20% by weight, better still from 2% to 15% by weight, even better still from 3% to 10% by weight, relative to the total weight of the composition.Surfactants

[0155] The composition according to the present invention can comprise one or more surfactants.

[0156] Preferably, the composition according to the present invention comprises one or more surfactants.

[0157] These may be chosen preferably from anionic surfactants, non-ionic surfactants and cationic surfactants, and / or mixtures thereof.

[0158] The term “anionic surfactant” means a surfactant including, as ionic or ionizable groups, only anionic groups. These anionic groups are preferably chosen from the following groups: CO2H, CO2-, SO3H, SO3-, OSO3H, OSO3-, H2PO3, HPO3-, PO32-, H2PO2, HPO2-, PO22-, POH and PO-.

[0159] As examples of anionic surfactants that may be used in the composition according to the invention, mention may be made of alkyl sulfates, alkyl ether sulfates, alkylamido ether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates, alkyl sulfonates, alkylamide sulfonates, alkylaryl sulfonates, α-olefin sulfonates, paraffin sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkylamide 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-galactoside uronic acids, salts of alkyl ether carboxylic acids, salts of alkylaryl ether carboxylic acids, salts of alkylamido ether carboxylic acids; and the corresponding non-salified forms of all these compounds; the alkyl and acyl groups of all these compounds (unless specified otherwise) generally comprising from 6 to 24 carbon atoms and the aryl group generally denoting a phenyl group.

[0160] These compounds can be oxyethylenated and then preferably comprise from 1 to 50 ethylene oxide units.

[0161] The salts of C6-C24 alkyl monoesters of polyglycoside-polycarboxylic acids may be chosen from C6-C24 alkyl polyglycoside-citrates, C6-C24 alkyl polyglycoside-tartrates and C6-C24 alkyl polyglycoside-sulfosuccinates.

[0162] When the anionic surfactant(s) are in salt form, they may be chosen from alkali metal salts such as the sodium or potassium salt and preferably the sodium salt, ammonium salts, amine salts and in particular amino alcohol salts or alkaline-earth metal salts such as the magnesium salt.

[0163] Examples of amino alcohol salts that may notably be mentioned include 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.

[0164] Alkali metal or alkaline-earth metal salts and in particular the sodium or magnesium salts are preferably used.

[0165] The anionic surfactants that may be present may be mild anionic surfactants, i.e. anionic surfactants without a sulfate function.

[0166] As regards the mild anionic surfactants, mention may be made in particular of the following compounds and salts thereof, and also mixtures thereof: polyoxyalkylenated alkyl ether carboxylic acids, polyoxyalkylenated alkylaryl ether carboxylic acids, polyoxyalkylenated alkylamido ether carboxylic acids, in particular those including 2 to 50 ethylene oxide groups, alkyl D-galactoside uronic acids, acyl sarcosinates, acyl glutamates and alkylpolyglycoside carboxylic esters.

[0167] Use may be made most particularly of polyoxyalkylenated alkyl ether carboxylic acids, for instance lauryl ether carboxylic acid (4.5 EO) sold, for example, under the name Akypo RLM 45 CA from Kao.

[0168] Among the anionic surfactants mentioned above, use is preferably made of sulfated surfactants such as alkyl sulfates or alkyl ether sulfates, and acyl glutamates, more preferentially sulfated anionic surfactants, even more preferentially alkyl sulfates.

[0169] The non-ionic surfactant(s) which can be used in the composition of the present invention are described in particular, for example, in the “Handbook of Surfactants” by M.R. Porter, published by Blackie & Son (Glasgow and London), 1991, pages 116-178.

[0170] Mention may be made, as examples of non-ionic surfactants, of the following compounds, alone or as a mixture:

[0171] - oxyalkylenated (C8-C24)alkylphenols;

[0172] - saturated or unsaturated, linear or branched, oxyalkylenated or glycerolated C8 to C40 alcohols, preferably including one or two fatty chains;

[0173] - saturated or unsaturated, linear or branched, oxyalkylenated C8 to C30 fatty acid amides;

[0174] - esters of saturated or unsaturated, linear or branched C8 to C30 acids and polyethylene glycols;

[0175] - fatty acid esters of sucrose;

[0176] - esters of saturated or unsaturated, linear or branched C8 to C30 acids and sorbitol, preferably oxyethylenated;

[0177] - C8-C30 fatty acid esters of sorbitan,

[0178] - polyoxyethylenated C8-C30 fatty acid esters of sorbitan;

[0179] - alkyl(C8-C30) (poly)glucosides and alkenyl(C8-C30) (poly)glucosides, which are optionally oxyalkylenated (0 to 10 oxyalkylene units), comprising from 1 to 15 glucose units, alkyl(C8-C30) (poly)glucoside esters;

[0180] - saturated or unsaturated, oxyethylenated plant oils;

[0181] - condensates of ethylene oxide and / or of propylene oxide;

[0182] - derivatives of N-(C8-C30)alkylglucamine and N-(C8-C30)acylmethylglucamine;

[0183] - amine oxides.

[0184] They are notably chosen from alcohols, α-diols and (C1-C20)alkylphenols, these compounds being ethoxylated, propoxylated or glycerolated and bearing at least one fatty chain including, for example, from 8 to 24 carbon atoms and preferably from 8 to 18 carbon atoms, the number of ethylene oxide or propylene oxide groups possibly ranging notably from 1 to 200, and the number of glycerol groups possibly ranging notably from 1 to 30.

[0185] Mention may also be made of condensates of ethylene oxide and of propylene oxide with fatty alcohols; ethoxylated fatty amides preferably having from 1 to 30 ethylene oxide units, polyglycerolated fatty amides comprising 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 plant oils, N-(C6-C24 alkyl)glucamine derivatives, amine oxides such as (C10-C14 alkyl)amine oxides or N-(C10-C14 acyl)aminopropylmorpholine oxides.

[0186] The C8-C30, preferably C12-C22, fatty acid esters (notably mono-, di- and triesters) of sorbitan may be chosen from:

[0187] 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; and sorbitan tristearate.

[0188] The C8-C30 fatty acid esters (notably mono-, di- and triesters) of polyoxyethylenated sorbitan are preferably chosen from C8-C30 fatty acid ester(s) of oxyethylenated sorbitan having from 1 to 30 ethylene oxide units, preferably from 2 to 20 ethylene oxide units, more preferably from 2 to 10 ethylene oxide units.

[0189] Preferentially, the C8-C30 fatty acid ester(s) of oxyethylenated sorbitan is / are chosen from C12-C18 fatty acid esters of oxyethylenated sorbitan, in particular from oxyethylenated esters of lauric acid, of myristic acid, of cetylic acid and of stearic acid and of sorbitan.

[0190] Preferably, the C8-C30 fatty acid ester(s) of oxyethylenated sorbitan is / are chosen from oxyethylenated (4 EO) sorbitan monolaurate (Polysorbate-21), oxyethylenated (20 EO) sorbitan monolaurate (Polysorbate-20), oxyethylenated (20 EO) sorbitan monopalmitate (Polysorbate-40), oxyethylenated (20 EO) sorbitan monostearate (Polysorbate-60), oxyethylenated (4 EO) sorbitan monostearate (Polysorbate-61), oxyethylenated (20 EO) sorbitan monooleate (Polysorbate-80), oxyethylenated (5 EO) sorbitan monooleate (Polysorbate-81), oxyethylenated (20 EO) sorbitan tristearate (Polysorbate-65), oxyethylenated (20 EO) sorbitan trioleate (Polysorbate-85).

[0191] The non-ionic surfactant(s) are preferably chosen from ethoxylated C8-C24 fatty alcohols comprising from 1 to 200 ethylene oxide groups, ethoxylated C8-C30 fatty acid esters of sorbitan having from 1 to 30 ethylene oxide units, (C6-C24 alkyl)polyglycosides, saturated or unsaturated oxyethylenated plant oils and mixtures thereof, better still from (C6-C24 alkyl)polyglycosides, even better still from (C6-C24 alkyl)polyglycosides such as: coco glucoside, caprylyl / capryl glucoside, lauryl glucoside and decyl glucoside.

[0192] The cationic surfactant(s) that can be used in the composition according to the invention are generally chosen from optionally polyoxyalkylenated primary, secondary or tertiary fatty amines, quaternary ammonium salts, and mixtures thereof.

[0193] The fatty amines generally comprise at least one C8-C30 hydrocarbon chain. Among the fatty amines that may be used according to the invention, mention may for example be made of stearylamidopropyldimethylamine and distearylamine.

[0194] As examples of quaternary ammonium salts, mention may particularly be made of:

[0195] - those corresponding to the general formula (X) below: (X)

[0196] in which the groups R8to R11, which may be identical or different, represent a linear or branched aliphatic group including from 1 to 30 carbon atoms, or an aromatic group such as aryl or alkylaryl, at least one of the groups R8to R11including from 8 to 30 carbon atoms and preferably from 12 to 24 carbon atoms. The aliphatic groups may include heteroatoms notably such as oxygen, nitrogen, sulfur and halogens.

[0197] The aliphatic groups are chosen, for example, from C1-C30 alkyl, C1-C30alkoxy, polyoxy(C2-C6)alkylene, C1-C30alkylamide, (C12-C22)alkylamido(C2-C6)alkyl, (C12-C22)alkyl acetate and C1-C30hydroxyalkyl groups;X-is an anion chosen from the group of halides, phosphates, acetates, lactates, (C1-C4)alkyl sulfates and (C1-C4)alkylsulfonates or (C1-C4)alkylarylsulfonates.

[0198] Among the quaternary ammonium salts of formula (X), preference is given, firstly, to tetraalkylammonium chlorides, for instance dialkyldimethylammonium or alkyltrimethylammonium chlorides in which the alkyl group comprises approximately 12 to 22 carbon atoms, in particular behenyltrimethylammonium chloride, distearyldimethylammonium chloride, cetyltrimethylammonium chloride or benzyldimethylstearylammonium chloride, or, secondly, to distearoylethylhydroxyethylmethylammonium methosulfate, dipalmitoylethylhydroxyethylammonium methosulfate or distearoylethylhydroxyethylammonium methosulfate, or also, finally, to palmitylamidopropyltrimethylammonium chloride or stearamidopropyldimethyl(myristyl acetate)ammonium chloride, sold under the name Ceraphyl® 70 by Van Dyk.

[0199] - quaternary ammonium salts of imidazoline, for instance those of formula(XI)below: (XI)

[0200] in whichR12represents an alkenyl or alkyl group comprising from 8 to 30 carbon atoms, for example tallow fatty acid derivatives,R13represents a hydrogen atom, a C1-C4alkyl group or an alkenyl or alkyl group comprising from 8 to 30 carbon atoms, R14represents a C1-C4alkyl group,R15represents a hydrogen atom or a C1-C4alkyl group, andX-is an anion chosen from the group of halides, phosphates, acetates, lactates, (C1-C4)alkyl sulfates, and (C1-C4)alkylsulfonates or (C1-C4)alkylarylsulfonates.

[0201] Preferably,R12andR13denote a mixture of alkenyl or alkyl groups comprising from 12 to 21 carbon atoms, for example tallow fatty acid derivatives, R14denotes a methyl group andR15denotes a hydrogen atom. Such a product is sold, for example, under the name Rewoquat® W 75 by Rewo;

[0202] - quaternary diammonium or triammonium salts, in particular of formula(XII)below: (XII)

[0203] in whichR16denotes an alkyl group comprising approximately from 16 to 30 carbon atoms, which is optionally hydroxylated and / or interrupted with one or more oxygen atoms; R17is chosen from hydrogen, an alkyl group comprising from 1 to 4 carbon atoms or a group -(CH2)3-N+(R16a)(R17a)(R18a); R16a, R17a, R18a,R18,R19,R20andR21, which may be identical or different, are chosen from hydrogen or an alkyl group comprising from 1 to 4 carbon atoms, and X-is an anion chosen from the group of halides, acetates, phosphates, nitrates, (C1-C4)alkyl sulfates, (C1-C4)alkylsulfonates or (C1-C4)alkylarylsulfonates, in particular methyl sulfate and ethyl sulfate.

[0204] Such compounds are, for example, Finquat CT-P, sold by Finetex (Quaternium 89), and Finquat CT, sold by Finetex (Quaternium 75);

[0205] - quaternary ammonium salts containing one or more ester functions, for instance those of formula(XIII)below: (XIII)

[0206] in which: R22is chosen from C1-C6 alkyl groups and C1-C6 hydroxyalkyl or dihydroxyalkyl groups; R23is chosen from: the group –C(O)R26, linear or branched, saturated or unsaturated C1-C22 hydrocarbon groups R27, or a hydrogen atom; R25is chosen from: the group –C(O)R28, linear or branched, saturated or unsaturated C1-C6 hydrocarbon groups R29, or a hydrogen atom; R24, R26and R28, which may be identical or different, are chosen from linear or branched, saturated or unsaturated C7-C21 hydrocarbon groups; r, s and t, which may be identical or different, are integers from 2 to 6; r1 and t1, which may be identical or different, are 0 or 1; r2 + r1 = 2 r and t1 + t2 = 2 t, y is an integer from 1 to 10, x and z, which may be identical or different, are integers from 0 to 10, X- is an organic or inorganic simple or complex anion, with the proviso that the sum x + y + z is from 1 to 15, that when x is 0, R23denotes R27and that when z is 0, R25denotes R29.

[0207] The alkyl groups R22may be linear or branched, and more particularly linear.

[0208] Preferably, R22denotes a methyl, ethyl, hydroxyethyl or dihydroxypropyl group, and more particularly a methyl or ethyl group.

[0209] Advantageously, the sum x + y + z is from 1 to 10.

[0210] When R23is a hydrocarbon group R27, it may be long and may have from 12 to 22 carbon atoms, or may be short and may have from 1 to 3 carbon atoms.

[0211] When R25is a hydrocarbon group R29, it preferably has 1 to 3 carbon atoms.

[0212] Advantageously, R24, R26and R28, which may be identical or different, are chosen from linear or branched, saturated or unsaturated C11-C21 hydrocarbon groups, and more particularly from linear or branched, saturated or unsaturated C11-C21 alkyl and alkenyl groups.

[0213] Preferably, x and z, which may be identical or different, are equal to 0 or 1.

[0214] Advantageously, y is equal to 1.

[0215] Preferably, r, s and t, which may be identical or different, are equal to 2 or 3, and even more particularly are equal to 2.

[0216] The anion X-is preferably a halide, preferably chloride, bromide or iodide, a (C1-C4)alkyl sulfate or a (C1-C4)alkyl- or (C1-C4)alkylaryl-sulfonate. However, use may be made of methanesulfonate, phosphate, nitrate, tosylate, an anion derived from an organic acid, such as acetate or lactate, or any other anion that is compatible with the ammonium bearing an ester function.

[0217] The anion X- is even more particularly chloride, methyl sulfate or ethyl sulfate.

[0218] Use is made more particularly, in the composition according to the invention, of the ammonium salts of formula (XIII) in which: R22denotes 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; R23is chosen from: the group –C(O)R26, methyl, ethyl or C14-C22 hydrocarbon groups, or a hydrogen atom, R25is chosen from: the group –C(O)R28, or a hydrogen atom, R24, R26and R28, which may be identical or different, are chosen from linear or branched, saturated or unsaturated C13-C17 hydrocarbon groups, and preferably from linear or branched, saturated or unsaturated C13-C17 alkyl and alkenyl groups.

[0219] Advantageously, the hydrocarbon groups are linear.

[0220] Among the compounds of formula (XIII), mention may for example be made of the salts, particularly the chloride or methyl sulfate, of diacyloxyethyldimethylammonium, diacyloxyethylhydroxyethylmethylammonium, monoacyloxyethyldihydroxyethylmethylammonium, triacyloxyethylmethylammonium or monoacyloxyethylhydroxyethyldimethylammonium, and mixtures thereof. The acyl groups preferably contain 14 to 18 carbon atoms and are derived more particularly from a plant oil such as palm oil or sunflower oil. When the compound contains several acyl groups, these groups may be identical or different.

[0221] These products are obtained, for example, by direct esterification of triethanolamine, triisopropanolamine, an alkyldiethanolamine or an alkyldiisopropanolamine, which are optionally oxyalkylenated, with fatty acids or with fatty acid mixtures of plant or animal origin, or by transesterification of the methyl esters thereof. This esterification is followed by quaternization by means of an alkylating agent such as an alkyl halide, preferably a methyl or ethyl halide, a dialkyl sulfate, preferably dimethyl or diethyl sulfate, methyl methanesulfonate, methyl para-toluenesulfonate, glycol chlorohydrin or glycerol chlorohydrin.

[0222] Such compounds are sold, for example, under the names Dehyquart® by Henkel, Stepanquat® by Stepan, Noxamium® by CECA or Rewoquat® WE 18 by Rewo-Witco.

[0223] The composition according to the invention may contain, for example, a mixture of quaternary ammonium monoester, diester and triester salts with a weight majority of diester salts.

[0224] Use may also be made of the ammonium salts containing at least one ester function that are described in patents US-A-4 874 554 and US-A-4 137 180.

[0225] Use may also be made of the behenoylhydroxypropyltrimethylammonium chloride sold, for example, by Kao under the name Quartamin BTC 131.

[0226] Preferably, the ammonium salts containing at least one ester function contain two ester functions.

[0227] Among the cationic surfactants, preference is more particularly given to choosing cetyltrimethylammonium, behenyltrimethylammonium and dipalmitoylethylhydroxyethylmethylammonium salts, and mixtures thereof, and more particularly behenyltrimethylammonium chloride, cetyltrimethylammonium chloride, and dipalmitoylethylhydroxyethylammonium methosulfate, and mixtures thereof.

[0228] Preferably, the surfactant(s) is / are chosen from anionic surfactants, non-ionic surfactants and mixtures thereof, preferentially from sulfated anionic surfactants, such as alkyl sulfates, ethoxylated C8-C24 fatty alcohols comprising from 1 to 200 ethylene oxide groups, ethoxylated C8-C30 fatty acid esters of sorbitan having from 1 to 30 ethylene oxide units, (C6-C24alkyl)polyglycosides, saturated or unsaturated oxyethylenated plant oils, and mixtures thereof.

[0229] More preferentially, the surfactant(s) is / are chosen from non-ionic surfactants, better still from (C6-C24alkyl)polyglycosides, even better still from (C6-C24alkyl)polyglucosides such as: coco glucoside, caprylyl / capryl glucoside, lauryl glucoside and decyl glucoside.

[0230] When the composition comprises one or more surfactant(s), the total content of surfactant(s) in the composition preferably varies from 0.01% to 20% by weight, more preferentially 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, with respect to the total weight of the composition.

[0231] When the composition comprises one or more non-ionic surfactant(s), the total content of non-ionic surfactant(s) in the composition preferably ranges from 0.01% to 20% by weight, more preferentially 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.Thickener

[0232] The composition according to the present invention may comprise one or more thickeners.

[0233] For the purposes of the present invention, the term “thickener” means an agent which, by virtue of its presence in the composition, makes it possible to increase the viscosity of said composition by at least 10 cPs and preferably by at least 200 cPs, at 25°C and at a shear rate of 1 s-1. This viscosity may be measured using a cone / plate viscometer (Haake R600 rheometer or the like).

[0234] The thickener(s) may notably be chosen from sodium chloride, fatty acid amides obtained from C10-C30carboxylic acid (monoisopropanolamide, diethanolamide or monoethanolamide of coconut acids, monoethanolamide of oxyethylenated carboxylic alkyl ether acid), associative polymers, thickening polymers other than the associative polymers, and in particular non-ionic cellulose-based polymers (hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose), guar gum and non-ionic derivatives thereof (hydroxypropylguar), gums of microbial origin (xanthan gum, scleroglucan gum), crosslinked or non-crosslinked homopolymers and copolymers based on acrylic acid, methacrylic acid or acrylamidopropanesulfonic acid, and mixtures thereof.

[0235] The thickening polymers can be chosen from associative polymers and non-associative polymers.

[0236] For the purposes of the present invention, the term "associative polymers" means water-soluble polymers that are capable, in an aqueous medium, of reversibly associating with each other or with other molecules.

[0237] Their chemical structure comprises hydrophilic zones and hydrophobic zones, characterized by at least one fatty chain preferably containing from 10 to 30 carbon atoms.

[0238] The associative polymer(s) that may be used according to the invention may be of anionic, cationic, amphoteric or non-ionic type, such as the polymers sold under the names Pemulen TR1 or TR2 by Goodrich (INCI: Acrylates / C10-30 Alkyl Acrylate Crosspolymer), Salcare SC90 by Ciba, Aculyn 22, 28, 33, 44 or 46 by Röhm & Haas and Elfacos T210 and T212 by Akzo.

[0239] Preferably, the associative polymers can be chosen from cellulose-based polymers.

[0240] Preferably, the associative polymer(s) are chosen from celluloses modified with groups comprising at least one fatty chain.

[0241] Preferentially, the associative polymer(s) may be chosen from hydroxyethylcelluloses modified with groups including at least one fatty chain, such as alkyl, arylalkyl or alkylaryl groups, or mixtures thereof, and in which the alkyl groups are preferably C8-C22, and hydroxyethylcelluloses modified with polyalkylene glycol alkyl phenol ether groups, and mixtures thereof, preferably cetylhydroxyethylcellulose.

[0242] Preferentially, the associative polymer(s) may be chosen from quaternized cellulose derivatives, preferably chosen from quaternized hydroxyethylcelluloses modified with groups comprising at least one fatty chain, such as linear or branched alkyl groups, linear or branched arylalkyl groups, or linear or branched alkylaryl groups, preferably linear or branched alkyl groups, these groups comprising at least 8 carbon atoms, notably from 8 to 30 carbon atoms, better still from 10 to 24, or even from 10 to 14, carbon atoms; or mixtures thereof, and even better still polyquaternium-67.

[0243] The thickening polymers may also be chosen from non-associative polymers, and in particular non-ionic cellulose-based polymers (hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose), guar gum and non-ionic derivatives thereof (hydroxypropylguar), gums of microbial origin (xanthan gum, scleroglucan gum), crosslinked or non-crosslinked homopolymers and copolymers based on acrylic acid, on methacrylic acid or on acrylamidopropanesulfonic acid, and mixtures thereof.

[0244] Among the non-associative polymers, an anionic (meth)acrylic polymer may also be chosen, such as homopolymers or copolymers of (meth)acrylic acid. Mention may for example be made of the compounds having the INCI name Carbomer.

[0245] Preferably, the non-associative polymers are chosen from guar gums, xanthan gum, and homopolymers or copolymers of (meth)acrylic acid.

[0246] According to a preferred embodiment, the thickener is chosen from associative or non-associative thickening polymers.

[0247] According to a preferred embodiment, the thickener is chosen from non-associative thickening polymers, more preferentially from guar gums.

[0248] The guar gums that may be used according to the invention may be non-ionic or cationic.

[0249] According to the invention, use may be made of chemically modified or unmodified non-ionic guar gums.

[0250] The unmodified non-ionic guar gums are, for example, the products sold under the name Vidogum GH 175 by Unipectine and under the names Meypro-Guar 50 and Jaguar C by Rhodia Chimie.

[0251] The modified non-ionic guar gums that may be used according to the invention are preferably modified with C1-C6hydroxyalkyl groups.

[0252] Among the hydroxyalkyl groups, examples that may be mentioned include hydroxymethyl, hydroxyethyl, hydroxypropyl and hydroxybutyl groups.

[0253] These guar gums are well known in the prior art and may be prepared, for example, by reacting corresponding alkene oxides, for instance propylene oxides, with the guar gum so as to obtain a guar gum modified with hydroxypropyl groups.

[0254] The degree of hydroxyalkylation, which corresponds to the number of alkylene oxide molecules consumed by the number of free hydroxyl functions present on the guar gum, preferably ranges from 0.4 to 1.2.

[0255] Such non-ionic guar gums optionally modified with hydroxyalkyl groups are sold, for example, under the trade names Jaguar HP8, Jaguar HP60 and Jaguar HP120, Jaguar DC 293 and Jaguar HP 105 by Meyhall or under the name Galactasol 4H4FD2 by Aqualon.

[0256] Non-ionic guar gums modified with hydroxyalkyl groups, more especially hydroxypropyl groups, modified with groups including at least one C6-C30fatty chain are also suitable for use. As examples of such compounds, mention may be made,inter alia, of the product Esaflor HM 22® (C22alkyl chain) sold by Lamberti, and the products RE210-18® (C14alkyl chain) and RE205-1® (C20alkyl chain) sold by Rhône-Poulenc.

[0257] The cationic guar gums that may more particularly be used according to the invention are guar gums comprising trialkylammonium cationic groups. Preferably, 2% to 30% and more preferentially still 5% to 20% by number of the hydroxyl functions of these guar gums bear trialkylammonium cationic groups.

[0258] Among these trialkylammonium groups, mention may most particularly be made of the trimethylammonium and triethylammonium groups.

[0259] Even more preferentially, these groups represent from 5% to 20% by weight relative to the total weight of the modified guar gum.

[0260] According to the invention, a guar gum modified with 2,3-epoxypropyltrimethylammonium chloride is preferably used.

[0261] These guar gums modified with cationic groups are products already knownper seand are for example described in patents US 3 589 578 and US 4 0131 307. Such products are moreover notably sold under the trade names Jaguar C13 S, Jaguar C 15 and Jaguar C 17 by Meyhall.

[0262] Use is preferably made of a non-ionic quar gum and, among these non-ionic quar gums, more particularly quar gums modified with hydroxyalkyl groups.

[0263] When the composition comprises one or more thickeners, the total content of thickener(s) preferably ranges from 0.01% to 20% by weight, more preferentially from 0.05% to 10% by weight, better still from 0.1% to 5% by weight, even better still from 0.2% to 3% by weight, relative to the total weight of the composition.

[0264] When the composition comprises one or more thickening polymers, the total content of thickening polymer(s) preferably ranges from 0.01% to 20% by weight, more preferentially from 0.05% to 10% by weight, better still from 0.1% to 5% by weight, even better still from 0.2% to 3% by weight, relative to the total weight of the composition.

[0265] When the composition comprises one or more guar gums, the total content of guar gum(s) preferably varies from 0.01% to 20% by weight, more preferentially from 0.05% to 10% by weight, better still from 0.1% to 5% by weight, even better still from 0.2% to 3% by weight, with respect to the total weight of the composition.

[0266] When the composition comprises one or more non-ionic guar gums, the total content of non-ionic guar gum(s) preferably varies from 0.01% to 20% by weight, more preferentially from 0.05% to 10% by weight, better still from 0.1% to 5% by weight, even better still from 0.2% to 3% by weight, relative to the total weight of the composition.Catalysts

[0267] The composition according to the invention may comprise one or more catalysts in order to accelerate the oxidation reaction of the oxidation couplers.

[0268] Preferably, the catalysts are metal catalysts.

[0269] Metal catalysts are compounds that comprise one or more metals in their structure.

[0270] In particular, the metals are chosen from alkali metals, alkaline-earth metals, transition metals and rare-earth metals.

[0271] Among the alkali metals, mention may be made in particular of potassium, sodium and lithium, and particularly potassium.

[0272] Among the alkaline-earth metals, mention may be made in particular of magnesium, calcium and strontium.

[0273] Among the transition metals, mention may in particular be made of manganese, iron, cobalt, copper, zinc, platinum, nickel, titanium, silver, zirconium, chromium, molybdenum, tungsten, gold and vanadium, and among said metals, most particularly manganese.

[0274] Among the rare-earth metals, mention may particularly be made of cerium.

[0275] Thus, the metal catalysts are in particular catalysts based on alkali metals, on alkaline-earth metals, on transition metals and on rare-earth metals, and more particularly catalysts based on potassium, on manganese, on vanadium or on cerium.

[0276] The metal catalysts used may be chosen from metal salts, metal oxides and metal complexes, and mixtures thereof.

[0277] For the purposes of the present invention, the term "metal complexes" is intended to mean systems in which the metal ion, i.e. the central atom, is bonded to one or more electron donors, called ligands, via chemical bonds. Examples that may be mentioned include porphyrins and phthalocyanines, which are especially cationic.

[0278] Preferably, the metal catalysts are chosen from metal salts.

[0279] For the purposes of the present invention, the term "metal salts" is intended to mean salts derived from the action of an acid on a metal.

[0280] Preferentially, the metal catalysts are chosen from alkali metal salts, such as potassium salts, alkaline-earth metal salts, such as magnesium salts, transition metal salts, such as manganese salts, and rare-earth metal salts, such as cerium salts, and mixtures thereof.

[0281] The metal salts may be mineral or organic salts.

[0282] According to one variant, the metal salts are mineral and may be chosen from halides, carbonates, sulfates and phosphates, in particular optionally hydrated halides such as iodides.

[0283] According to another preferred variant, the metal salts are in oxidation state II and bear two (poly)hydroxy acid-based ligands.

[0284] The term "(poly)hydroxy acid" means any carboxylic acid which comprises a hydrocarbon chain which is linear or branched, and saturated or unsaturated, preferably saturated and / or linear, comprising from 1 to 10 carbon atoms and from 1 to 9 hydroxyl groups, and comprising from 1 to 4 carboxylic groups –C(O)-OH, at least one of said –C(O)-OH functions of which is in the carboxylate form –C(O)-O- complexed with the metal atom, preferably Mn(II). More particularly, the metal salt is complexed with two carboxylate groups such as that of formula(IA):

[0285] R-C(O)-O-M-O-C(O)-R’(IA)

[0286] and also the solvates thereof, such as hydrates, and the enantiomers thereof,

[0287] in which formula(IA):

[0288] - M represents a metal (II) or metal2+ in oxidation state 2,

[0289] - R and R’, which may be identical or different, represent a (C1-C6)(poly)hydroxyalkyl group.

[0290] The metal catalysts are particularly chosen from organic acid salts of transition metals, especially of manganese, and mineral salts of rare-earth metals, especially of cerium.

[0291] According to one particular embodiment of the invention, the manganese-based catalyst is not a manganese oxide, but a manganese salt.

[0292] The organic metal salts may be more particularly chosen from organic acid salts such as citrates, lactates, glycolates, gluconates, acetates, propionates, fumarates, oxalates and tartrates, especially gluconates.

[0293] More preferentially, the metal catalysts are chosen from potassium iodide and manganese gluconate, preferably potassium iodide.

[0294] The catalysts, preferably metal catalysts, may be present in a content ranging from 0.001% to 10% by weight, preferably in a content ranging from 0.001% to 2% by weight, better still ranging from 0.01% to 1% by weight relative to the total weight of the composition.Solvents

[0295] The composition according to the invention may also comprise one or more organic solvents.

[0296] Mention may be made, for example, as organic solvent, of linear or branched C2to C4alkanols, such as ethanol and isopropanol; glycerol; polyols and polyol ethers, such as 2-butoxyethanol, propylene glycol, dipropylene glycol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether and monomethyl ether, and also aromatic alcohols or ethers, such as benzyl alcohol or phenoxyethanol, and mixtures thereof.

[0297] The organic solvent(s) can be present in an amount ranging from 0.01% to 30% by weight, preferably ranging from 2% to 25% by weight, with respect to the total weight of the composition.

[0298] In addition, preferably, the composition according to the invention is an aqueous composition. The composition preferably comprises water in an amount of greater than or equal to 5% by weight, preferably greater than or equal to 10% by weight, and better still greater than or equal to 15% by weight, relative to the total weight of the composition.

[0299] Preferably, when the composition is aqueous, the pH of the composition according to the invention is between 8 and 13, preferably between 9 and 12.

[0300] The pH of the composition can be adjusted to the desired value by means of acidic or alkaline agent(s) commonly used in the dyeing of keratin fibres or alternatively using buffer systems known to a person skilled in the art.Additives

[0301] The composition according to the invention may optionally comprise one or more additives, other than the compounds of the invention and among which mention may be made of cationic, anionic, non-ionic or amphoteric polymers or mixtures thereof other than those described above, antidandruff agents, anti-seborrhoea agents, agents for preventing hair loss and / or for promoting hair regrowth, vitamins and provitamins including panthenol, sunscreens, mineral or organic pigments, plasticizers, solubilizers, opacifiers or nacreous agents, antioxidants, hydroxy acids, fragrances, preserving agents and sequestrants.

[0302] Of course, a person skilled in the art will take care to choose this or these optional additional compounds so that the advantageous properties intrinsically attached to the composition according to the invention are not, or not substantially, detrimentally affected by the envisaged addition(s).

[0303] The above additives may generally be present in an amount, for each of them, of between 0 and 20% by weight, relative to the total weight of the ready-to-use composition.

[0304] Preferably, the composition according to the invention does not comprise any chemical oxidizing agents.

[0305] According to a preferred embodiment, the composition according to the invention comprises:

[0306] - one or more fatty substances, the total content of fatty substances being greater than or equal to 20% by weight, relative to the total weight of the composition;

[0307] - ammonium hydroxide;

[0308] - one or more oxidation couplers preferably chosen from 1,3-dihydroxy-2-methylbenzene, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, α-naphthol, 6-hydroxyindole, 6-hydroxybenzomorpholine and 3-aminophenol, and addition salts thereof, solvates thereof and / or solvates of the salts thereof and mixtures thereof;

[0309] the composition being free of oxidation base.

[0310] According to a particular embodiment, the composition according to the invention comprises:

[0311] - one or more fatty substances, the total content of fatty substances being greater than or equal to 20% by weight, relative to the total weight of the composition;

[0312] - ammonium hydroxide;

[0313] - one or more oxidation couplers chosen from 1,3-dihydroxy-2-methylbenzene, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, α-naphthol, 6-hydroxyindole, 6-hydroxybenzomorpholine and 3-aminophenol, and addition salts thereof, solvates thereof and / or solvates of the salts thereof and mixtures thereof; and

[0314] - one or more surfactants,

[0315] the composition being free of oxidation base.Process

[0316] The present invention also relates to a process for dyeing keratin fibres, preferably the hair, which comprises the step of applying, to said keratin fibres, an effective amount of a composition as defined above.

[0317] The composition may be applied to wet or dry keratin fibres. After the treatment, the keratin fibres are optionally rinsed with water, optionally washed with a shampoo and then rinsed with water, before being dried or left to dry.

[0318] Preferably, the process according to the invention comprises a step of mixing the composition according to the invention with an oxidizing composition comprising one or more chemical oxidizing agents. This mixing step is preferably carried out at the time of use, just before the application to the hair of the composition resulting from the mixing.

[0319] More particularly, the chemical oxidizing agent(s) are chosen from hydrogen peroxide, urea peroxide, alkali metal bromates or ferricyanides, peroxygenated salts, for instance persulfates, perborates, peracids and precursors thereof and percarbonates of alkali metals or alkaline-earth metals, and mixtures thereof. The chemical oxidizing agent is preferably hydrogen peroxide.

[0320] The oxidizing composition is preferably an aqueous composition. In particular, it comprises more than 5% by weight of water, preferably more than 10% by weight of water and even more advantageously more than 20% by weight of water relative to the total weight of the oxidizing composition.

[0321] It may also comprise one or more organic solvents chosen from those listed previously; these solvents more particularly representing, when they are present, from 0.1% to 40% by weight and preferably from 0.5% to 30% by weight, relative to the weight of the oxidizing composition.

[0322] The oxidizing composition also preferably comprises one or more acidifying agents. Among the acidifying agents, examples that may be mentioned include mineral or organic acids, for instance hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids, for instance acetic acid, tartaric acid, citric acid or lactic acid, and sulfonic acids.

[0323] The oxidizing composition may also comprise one or more fatty substances such as those described previously, preferably chosen from fatty alcohols, liquid hydrocarbons comprising more than 16 carbon atoms and mixtures thereof, surfactants and polymers.

[0324] The pH of the oxidizing composition, if it is aqueous, is usually less than 7, preferably between 1 and 5 and preferentially between 1.5 and 4.5.

[0325] Preferably, the oxidizing composition comprises hydrogen peroxide as oxidizing agent, in aqueous solution, the concentration of which varies, more particularly, from 0.1% to 50%, more particularly between 0.5% and 20% and more preferentially still between 1% and 15%, by weight, with respect to the weight of the oxidizing composition.

[0326] Preferably, at least one of the dyeing or oxidizing compositions is aqueous.

[0327] Preferably, the process according to the invention comprises a step of applying to the hair a composition resulting from the mixing, at the time of use, of at least two compositions:

[0328] a) a dyeing composition comprising:

[0329] - one or more fatty substances, the total content of fatty substances being greater than or equal to 20% by weight, relative to the total weight of the composition;

[0330] - one or more mineral alkaline agents;

[0331] - one or more oxidation dyes, chosen from oxidation couplers;

[0332] - the dyeing composition being free of oxidation base;

[0333] and

[0334] b) an oxidizing composition comprising one or more chemical oxidizing agents, preferably hydrogen peroxide.

[0335] According to a particular embodiment, the process according to the invention comprises the step of applying to the hair, at the time of use, a composition resulting from the mixing of at least two compositions:

[0336] a) a dyeing composition comprising:

[0337] - one or more fatty substances, the total content of fatty substances being greater than or equal to 20% by weight, relative to the total weight of the composition;

[0338] - ammonium hydroxide;

[0339] - one or more oxidation couplers preferably chosen from 1,3-dihydroxy-2-methylbenzene, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, α-naphthol, 6-hydroxyindole, 6-hydroxybenzomorpholine and 3-aminophenol, and addition salts thereof, solvates thereof and / or solvates of the salts thereof and mixtures thereof;

[0340] the composition being free of oxidation base;

[0341] and

[0342] b) an oxidizing composition comprising one or more chemical oxidizing agents, preferably hydrogen peroxide.

[0343] The invention also relates to a composition comprising:

[0344] - one or more fatty substances, the total content of fatty substances being greater than or equal to 20% by weight, relative to the total weight of the composition;

[0345] - one or more mineral alkaline agents, preferably ammonium hydroxide;

[0346] - one or more oxidation dyes, chosen from oxidation couplers;

[0347] - one or more chemical oxidizing agents, preferably hydrogen peroxide, - the dyeing composition being free of oxidation base,

[0348] this composition being a ready-to-use composition.

[0349] This ready-to-use composition may comprise one or more ingredients among those described previously.

[0350] Preferably, the pH of the ready-to-use composition is between 8 and 11 and preferentially between 9 and 10.5.

[0351] According to one embodiment, the dyeing process comprises a step of applying the dyeing composition defined above and one or more catalysts defined above to the keratin fibres.

[0352] The dyeing composition and the catalyst(s) may be applied to the keratin fibres together or separately.

[0353] As described above, the catalyst may be contained in the dyeing composition.

[0354] As a variant, the catalyst may be contained in a composition C, distinct from the dyeing composition.

[0355] The composition C comprising one or more catalysts can be applied to the keratin fibres before the application of the dyeing composition.

[0356] As a variant, the composition C may be mixed with the dyeing composition, preferably the ready-to-use composition, the mixture obtained being applied to the keratin fibres.

[0357] The composition C may also comprise water.

[0358] The composition C may also comprise a thickener as described above.Kit

[0359] Another subject of the invention is a multi-compartment device for dyeing keratin fibres, comprising at least a first compartment containing the dyeing composition according to the invention and at least a second compartment containing an oxidizing composition as described above, and optionally at least a third compartment containing at least one composition C comprising one or more catalysts as defined above.

[0360] The compositions of the device according to the invention are packaged in separate compartments, optionally accompanied by suitable application means, which may be identical or different, such as fine brushes, coarse brushes or sponges.

[0361] The device mentioned above may also be equipped with a means for dispensing the desired mixture onto the hair, for instance the devices described in patent FR 2586913.

[0362] Finally, the present invention relates to the use of a composition as described above, for dyeing keratin fibres, and in particular the hair.

[0363] The examples that follow serve to illustrate the invention without, however, being limiting in nature.Examples

[0364] In the examples that follow, all the amounts are given as mass percentages of active material (AM) relative to the total weight of the composition (unless otherwise mentioned).Compositions A

[0365] CompositionA1according to the present invention and comparative compositionA2were prepared using the ingredients of which the contents are indicated in the table below:

[0366] A1(invention)A2(comparative)Ammonium hydroxide3.62-Ethanolamine-4.88Ascorbic acid0.120.12Sodium metabisulfite0.220.22Mineral Oil60602,4-Diaminophenoxyethanol HCl55Hydroxypropyl guar11Sodium lauryl sulfate1.241.24Cocoyl glucoside3.023.02PEG-40 hydrogenated castor oil11EDTA0.20.2Waterqs 100qs 100Oxidizing composition

[0367] The oxidizing compositionBwas prepared from the ingredients, the contents of which are shown in the table below:

[0368] BHydrogen peroxide6Cetearyl Alcohol6Steareth-205PEG-4 Rapeseedamide1.2Tetrasodium etidronate0.06Tetrasodium pyrophosphate0.04Sodium salicylate0.035Mineral Oil20Polyquaternium-60.2Glycerol0.5Hexadimethrine chloride0.15Tocopherol0.1Phosphoric acidqs pH 2.2Waterqs 100Dyeing protocol

[0369] The compositionsA1andA2are each mixed with the oxidizing compositionBin a 1+1.5 weight ratio.

[0370] A1+B(invention)A2+B(comparative)pH mixture 1+1.59.3 ± 0.29.3 ± 0.2

[0371] Each of the mixtures is applied to locks of hair containing 90% natural grey (NG) hair in a proportion of 5 g of mixture per 1 g of hair.

[0372] After a leave-on time of 30 minutes on a hotplate at 27°C, the locks of hair are washed with a standard shampoo, rinsed off and then dried.Results

[0373] Colorimetric measurements were then carried out using a multispectral Zeiss Interlock T 2.0 / 100 ZF-I 2 Macro lens camera to evaluate hair colouration in the L*a*b* system.

[0374] In this system, L* represents the lightness. The lower the value of L*, the darker and more powerful the colouring obtained. The chromaticity is measured by the values a* and b*, a* representing the red / green axis and b* the yellow / blue axis.

[0375] The colour build-up is represented by the colour difference ΔE between the locks of non-dyed and dyed hair, ΔE being obtained from the formula:

[0376] in which L* represents the intensity and a* and b* represent the chromaticity of the dyed hair, and L0* represents the intensity and a0* and b0* represent the chromaticity of the non-dyed hair. The higher the ∆E value, the better the colour build-up.

[0377] The results are summarized in the following table:

[0378] L*a*b*ΔENon-dyed lock (control)63.021.4413.74A1+B(invention)27.685.719.1135.9A2+B(comparative)33.794.706.4430.3

[0379] The mixture A1+B according to the invention results in a lower value of L*, and thus a more powerful colouration, than the comparative mixture A2+B.

[0380] In addition, the mixture A1+B according to the invention leads to a higher value of ΔE, thus to a better build-up of the dyes, than the comparative mixture A2+B.

[0381] The composition according to the invention made it possible to improve the power and the build-up of the colouration.

Claims

Composition comprising:- one or more fatty substances other than fatty acids, the total content of fatty substances other than fatty acids being greater than or equal to 20% by weight, relative to the total weight of the composition;- one or more mineral alkaline agents;- one or more oxidation dyes, chosen from oxidation couplers;the composition being free of oxidation base.Composition according to the preceding claim, comprising one or more liquid fatty substances other than fatty acids, preferably chosen from liquid hydrocarbons containing more than 16 carbon atoms, plant oils, liquid fatty alcohols and liquid fatty esters, silicone oils and mixtures thereof, more preferentially from liquid hydrocarbons containing more than 16 carbon atoms, in particular liquid petroleum jelly, liquid fatty alcohols, and mixtures thereof.Composition according to either one of the preceding claims, comprising one or more solid fatty substances other than fatty acids, preferably chosen from solid fatty alcohols, solid esters of fatty acids and / or of fatty alcohols, waxes, ceramides, and mixtures thereof, preferentially from solid fatty alcohols, solid esters of fatty acids and / or of fatty alcohols, and mixtures thereof.Composition according to any one of the preceding claims, in which the total content of the fatty substance(s) other than fatty acids is greater than or equal to 25% by weight, more preferentially greater than or equal to 30% by weight, better still greater than or equal to 35% by weight, even better still greater than or equal to 40% by weight, relative to the total weight of the composition.Composition according to Claim 2, in which the total content of the liquid fatty substance(s) other than fatty acids is greater than or equal to 25% by weight, more preferentially greater than or equal to 30% by weight, better still greater than or equal to 35% by weight, even better still greater than or equal to 40% by weight, relative to the total weight of the composition.Composition according to any one of the preceding claims, comprising one or more oxidation couplers chosen from 1,3-dihydroxy-2-methylbenzene, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, α-naphthol, 6-hydroxyindole, 6-hydroxybenzomorpholine, 3-aminophenol, addition salts thereof, solvates thereof and / or solvates of the salts thereof, and mixtures thereof.Composition according to any one of the preceding claims, in which the total content of oxidation couplers ranges from 0.001% to 20% by weight, more preferentially from 0.005% to 15% by weight, better still from 0.01% to 10% by weight, even better still from 0.05% to 5% by weight, and even better still from 0.1% to 3% by weight, relative to the total weight of the composition.Composition according to any one of the preceding claims, in which the mineral alkaline agent is chosen from ammonium hydroxide, carbonates or hydrogen carbonates of ammonium, or of alkali or alkaline-earth metals, such as sodium, potassium, calcium, magnesium or ammonium carbonates or hydrogen carbonates, alkali or alkaline-earth metal phosphates, such as sodium or potassium phosphates, alkali or alkaline-earth metal hydroxides, such as sodium or potassium hydroxides, alkali or alkaline-earth metal silicates or metasilicates, such as sodium silicates, potassium silicates, calcium silicates, aluminium silicates, and mixtures thereof, and is preferably ammonium hydroxide.Composition according to any one of the preceding claims, in which the total content of mineral alkaline agent ranges from 0.1% to 30% by weight, more preferentially from 0.5% to 20% by weight, better still from 1% to 15% by weight, even better still from 2% to 10% by weight, relative to the total weight of the composition.Composition according to any one of the preceding claims, comprising one or more surfactants, the surfactant(s) preferably being chosen from anionic surfactants, non-ionic surfactants and mixtures thereof, more preferentially chosen from sulfated anionic surfactants, such as alkyl sulfates, ethoxylated C8-C24 fatty alcohols comprising from 1 to 200 ethylene oxide groups, ethoxylated C8-C30 fatty acid esters of sorbitan having from 1 to 30 ethylene oxide units, (C6-C24alkyl)polyglycosides, saturated or unsaturated oxyethylenated plant oils, and mixtures thereof.Composition according to any one of the preceding claims, not comprising any chemical oxidizing agent.Composition according to any one of Claims 1 to 10, comprising one or more chemical oxidizing agents, preferably hydrogen peroxide.Composition according to any one of the preceding claims, comprising one or more catalysts, preferably one or more metal catalysts, preferentially chosen from alkali metal salts such as potassium salts, alkaline-earth metal salts such as magnesium salts, transition metal salts, such as manganese salts, and rare-earth metal salts, such as cerium salts, and mixtures thereof, better still from potassium iodide and manganese gluconate, and mixtures thereof.Process for dyeing keratin fibres, preferably the hair, comprising applying to said keratin fibres the dyeing composition as defined in any one of Claims 1 to 12, and optionally one or more catalysts as defined in Claim 13, the dyeing composition and the catalyst(s) being applied to the keratin fibres together or separately.Process for dyeing keratin fibres, preferably the hair, according to the preceding claim, in which the composition defined in Claim 12 results from the mixing of at least two compositions:a) a dyeing composition comprising:- one or more fatty substances other than fatty acids, the total content of fatty substances other than fatty acids being greater than or equal to 20% by weight, relative to the total weight of the composition; and- one or more mineral alkaline agents;- one or more oxidation dyes chosen from oxidation couplers; andb) an oxidizing composition comprising one or more chemical oxidizing agents, preferably hydrogen peroxide,the process not using any oxidation base.Multi-compartment device, preferably two-compartment device, for dyeing keratin fibres, preferably the hair, comprising at least a first compartment containing a composition as defined according to any one of Claims 1 to 11 and at least a second compartment containing an oxidizing composition comprising one or more chemical oxidizing agents, preferably hydrogen peroxide, and optionally at least a third compartment containing at least one composition comprising one or more catalysts as defined in Claim 13.

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