FR2984737A1 - Dyeing/lightening keratin fibers, comprises mixing compositions comprising non-ionic surfactant, heat-thickening polymer, alkalizing agent, optionally additional surfactant, colorant and chemical oxidizing agent and then applying on fibers - Google Patents

Abstract

Dyeing or lightening keratin fibers, comprises extemporaneously mixing two compositions (A, B1) and applying the mixture on the keratin fibers, where: the mixture comprises 25 wt.% of fatty substances; the composition (A) is present in the form of emulsion whose oil content is 30 wt.% and comprises (i) non-ionic surfactant that is solid at an ambient temperature of hydrophilic-lipophilic balance (HLB), (ii) heat-thickening polymer, (iii) alkalizing agent, (iv) optionally additional surfactant and (v) colorant; and the composition (B1) comprises chemical oxidizing agent. Independent claims are included for: (1) the composition (A) in direct emulsion form; (2) ready-to-use composition comprising the compositions (A, B1); and (3) a device comprising two compartments in which a first compartment contains A and a second compartment contains B1.

Description

PROCESS FOR COLORING OR LIGHTENING TWO-PART KERATIN FIBERS FROM OIL-RICH ALKALINE DIRECT EMULSION BASED ON SOLID NON-IONIC SURFACTANT AND THERMO-THICKENING POLYMER

The subject of the present invention is a process for the dyeing or lightening of keratinous fibers such as the hair using a composition in the form of a direct emulsion comprising at least 30% of oil (s) and which contains at least 0% a solid nonionic surfactant at room temperature at HLB ranging from 1.5 to 10, H) at least one heat-thickening polymer, y) at least one basifying agent, optionally iv) at least one nonionic surfactant with a calculated HLB greater than 10, and optionally y) at least one dye, mixed with an oxidizing composition, the mixture comprising at least 25% fat. This invention also relates to a multi-compartment device and a composition in the form of an oil-rich direct emulsion comprising the ingredients 0 to y) as defined above. Among the methods for staining human keratinous fibers, such as the hair, mention may be made of oxidation or permanent staining. More particularly, this mode of staining uses one or more oxidation dyes, usually one or more oxidation bases possibly associated with one or more couplers. In general, oxidation bases are chosen from ortho- or para-phenylenediamines, ortho- or para-aminophenols as well as heterocyclic compounds. These oxidation bases are colorless or weakly colored compounds which, combined with oxidizing products, allow access to colored species. Very often, the shades obtained with these oxidation bases are varied by combining them with one or more couplers, the latter being chosen in particular from aromatic meta-diamines, meta-aminophenols, meta-diphenols and certain heterocyclic compounds, such as indole compounds. The variety of molecules involved in the oxidation bases and couplers allows a rich palette of colors to be obtained. It is also possible to add to these compositions, direct dyes, which are colored and coloring molecules having an affinity for the fibers. The direct dyes generally employed are chosen from nitrobenzene, anthraquinone, nitropyridine, azo, methine, azomethine, xanthene, acridine, azine or triarylmethane direct dyes. The presence of such compounds makes it possible to further enrich the coloration obtained, in reflections or to increase the chromaticity of the coloration obtained. The oxidation dyeing processes therefore consist in using with these dyeing compositions a composition comprising at least one oxidizing agent, generally hydrogen peroxide, under alkaline pH conditions in the vast majority of cases. This oxidizing agent has the role of revealing the color, by an oxidative condensation reaction of the oxidation dyes with each other.

One of the difficulties is that the coloring or lightening processes are carried out under alkaline conditions and that the alkaline agent most commonly used is ammonia. Ammonia is particularly advantageous in this type of process. Indeed, it makes it possible to adjust the pH of the composition to an alkaline pH to allow the activation of the oxidizing agent. This agent also causes a swelling of the keratinous fiber, with an opening of the scales, which favors the penetration of the oxidant and oxidation dyes inside the fiber and thus increases the efficiency of the reaction. However, this alkalizing agent is very volatile, which causes inconvenience to the user because of the strong characteristic smell, rather annoying ammonia that emerges during the process. In addition, the amount of ammonia released requires the use of higher levels than necessary to compensate for this loss. This is not without consequences for the user who remains not only bothered by the smell but who may also be faced with greater risks of intolerance, such as irritation of the scalp (tingling). As for the option of purely and simply replacing all or part of the ammonia with one or more other conventional alkalizing agents, this does not lead to compositions as effective as those based on ammonia, in particular because these The alkalizing agents do not provide sufficient lightening of the pigmented fibers in the presence of the oxidizing agent or satisfactory coloration in terms of intensities, power, chromaticity or homogeneity of the color. One of the objectives of the present invention is to provide methods for dyeing and lightening keratin materials, especially keratin fibers such as the hair which do not have the drawbacks of those used with the existing compositions, disadvantages caused by by the presence of significant levels of ammonia, while remaining at least as effective in terms of coloring and lightening and homogeneity of the latter.

The oxidation coloring must moreover satisfy a certain number of requirements. Thus, it must be harmless from the toxicological point of view, it must make it possible to obtain shades in the desired intensity and to have good resistance to external aggressions such as light, bad weather, washing, permanent ripples, sweating and friction.

The coloring process must also make it possible to cover the white hair, and finally be the least selective possible, that is to say, to obtain the lowest possible color differences throughout the same keratin fiber, which generally includes areas that are differently sensitized (ie damaged) from its tip to its root. The compositions used in the dyeing process must, in addition, have good mixing and application properties on keratinous fibers, and in particular good rheological properties so as not to flow, when they are applied, on the face, the leather hairy, or outside the areas that are proposed to be dyed. The compositions in emulsion form must also be stable especially in terms of "phase shift" i.e. without return to two phases with one side the organic phase and the other the aqueous phase. However, when a composition in the form of a direct emulsion is rich in oil, ie comprising more than 30% by weight of oil relative to the total weight of the composition, there is often instability of the emulsion, in particular at elevated temperature. .

As regards the processes for lightening keratinous fibers, aqueous compositions comprising at least one oxidizing agent are used, under alkaline pH conditions in the vast majority of cases. This oxidizing agent has the role of degrading the melanin of the hair, which, depending on the nature of the oxidizing agent present, leads to a more or less pronounced lightening of the fibers.

Numerous attempts have been made in the field of lightening hair coloring to improve dyeing properties using, for example, adjuvants. However, the choice of these adjuvants is delicate insofar as they must improve the dyeing properties of the dye compositions without harming the other properties of these compositions. In particular, these adjuvants must not adversely affect the lightening properties of the keratinous fibers and the application properties of the coloring. We find ourselves faced with similar problems in the case of bleaching compositions where the addition of particular adjuvants must not affect the lightening properties of the composition or the application properties of the composition, including rheological. The object of the present invention is to obtain novel dyeing processes including oxidation or lightening keratin fibers that do not have the disadvantages of the prior art. More particularly, the object of the present invention is to obtain a process for the oxidation dyeing of keratinous fibers, having improved dyeing properties which make it possible to achieve the desired lightening and which is easy to implement, to apply, especially whose mixture does not flow and remains well located at the point of application. By improved dyeing properties is meant in particular an improvement in the power / intensity and / or homogeneity of the dye. Another object of the invention is also to obtain a process for lightening human keratin fibers such as the hair which makes it possible to achieve the desired lightening, which is easy to implement, to mix and to apply, in particular of which the mixture does not flow and remains well located at the point of application and which is odorless or very little smelly. Another object of the invention is to obtain stable oil-rich direct emulsions, especially with respect to temperature, even in the absence of thickening agents. These objects are achieved by the present invention which relates to a process for dyeing or lightening keratinous fibers comprising the extemporaneous mixing step at the time of use two compositions (A) and (B) and step 15 applying said mixture to said fibers; said mixture and comprising at least 25% by weight of fatty substance relative to the total weight of the composition resulting from the mixture of two compositions (A) + (B); with: (A) representing a composition in the form of a direct emulsion comprising at least 30% by weight of oil (s) relative to the weight of the composition (A), and also comprising: 0 at least one nonionic surfactant solid at room temperature and at atmospheric pressure and with HLB ranging from 1.5 to 10; H) at least one thermo-thickening polymer; HO at least one basifying agent; Iv) optionally at least one surfactant other than solid nonionic surfactants; y) optionally at least one dye; and (B) representing a composition comprising at least one chemical oxidizing agent. It also relates to a process for the dyeing or lightening of human keratin fibers comprising the use of the abovementioned composition. It also relates to the composition (A) in direct emulsion form as defined above. Another subject of the invention is a ready-to-use composition, which comprises at least 25% by weight of fatty substances and comprising the ingredients 0, H), HO, and optionally iv) and y) as defined previously and at least one oxidizing agent.

The invention likewise relates to a device comprising at least two compartments containing in a first compartment the composition (A) as defined above and in a second compartment the composition (B) as defined above.

Other characteristics and advantages of the invention will emerge more clearly on reading the description and examples which follow. In what follows, and unless otherwise indicated, the boundaries of a domain of values are included in this field. The human keratinous fibers treated by the process according to the invention are preferably the hair.

The expression, "at least one" is equivalent to "one or more". The term "direct emulsion" means a mixture, microscopically heterogeneous, and macroscopically homogeneous, two liquid immiscible substances between them of oil-in-water type (O / W or ONV for oil in water).

The emulsion is composed of an oily phase dispersed in an aqueous phase. For emulsion in the sense of the present invention, thus means true emulsions, to distinguish microemulsions, which are thermodynamically stable systems unlike true emulsions. The size of the droplets of the dispersed phase of the emulsions of the invention is preferably between 10 nm and 100 μm and preferably between 200 nm and 50 μm. This is the average diameter D (3.2) measurable, in particular using a laser granulometer. The direct emulsion may be prepared by conventional emulsion preparation methods, well known to those skilled in the art. By "fatty substance" is meant an organic compound which is insoluble in water at ordinary temperature (25 ° C.) and at atmospheric pressure (760 mmHg) (solubility of less than 5% and preferably of 1%, even more preferentially at 0.1%). They have in their structure at least one hydrocarbon chain containing at least 6 carbon atoms or a chain of at least two siloxane groups. In addition, the fatty substances are generally soluble in organic solvents under the same conditions of temperature and pressure, such as, for example, chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran ( THF), petrolatum oil or decamethylcyclopentasiloxane. The fatty substances of the invention are neither polyoxyalkylenated nor polyglycerolated. By "oxidizing agent" or "chemical oxidizing agent" according to the invention is meant an oxidizing agent other than oxygen in the air. The dyeing or lightening process of the invention The dyeing or lightening process according to the invention therefore consists in applying the mixture of the two compositions (A) and (B) prepared just before use, particularly between 1 second and 15 minutes before use preferably 5 minutes, and apply it on human keratin fibers, dry or wet. The composition (A) in the form of a direct emulsion has an oil content (s) of at least 30% by weight and preferably at least 50% by weight relative to the total weight of the composition (A), and comprises: at least one solid nonionic surfactant at room temperature and at atmospheric pressure at HLB ranging from 1.5 to 10; H) at least one thermo-thickening polymer; HO at least one basifying agent; iv) optionally at least one additional surfactant other than solid nonionic surfactants (0; y), optionally at least one dye; and (B) representing a composition comprising at least one chemical oxidizing agent.

When the process according to the invention is only a lightening process, it does not use direct dye or oxidation dye precursor (bases and couplers) usually used for dyeing human keratin fibers or else it uses direct dyes, the total content of said dyes does not exceed 0.001% by weight relative to the weight of the composition once the mixture produced compositions (A) and (B). Indeed, at such a content, only the composition resulting from the mixture of (A) and (B) would be optionally tinted, that is to say, one would not observe staining effect of keratinous fibers.

Preferably, the composition (A) does not contain oxidation bases, coupler, or direct dye when the process of the invention is only a process for lightening the keratinous fibers.

According to another particular embodiment of the invention, the method is a method for dyeing keratinous fibers from the mixture of compositions (A) and (B) as defined above.

When the process according to the invention is a dyeing process it uses at least one dye and more particularly direct dyes or oxidation dye precursors as defined below. If it uses direct dyes, the total content of said direct dyes exceeds 0.001% by weight relative to the weight of the composition once the mixture is made (A) and (B). Preferably, the composition (A) contains oxidation bases, couplers, and / or direct dyes. The composition resulting from the mixture of (A) and (B) according to the invention is then left in place for a period usually ranging from one minute to one hour, preferably from 5 minutes to 30 minutes. The temperature during the process is typically between room temperature (between 15 and 25 ° C) and 80 ° C, preferably between room temperature and 60 ° C.

At the end of the treatment, the human keratin fibers are optionally rinsed with water, optionally washed with a shampoo followed by rinsing with water, before being dried or allowed to dry. Ingredients (1) - HLB solid nonionic surfactant ranging from 1.5 to 10%; The composition (A) of the process of the invention comprises at least one HLB surfactant ranging from 1.5 to 10 which is solid at ambient temperature and at atmospheric pressure (25 ° C., 1 atmosphere = 760 mmHg). HLB "ranging from 1.5 to 10" means an HLB "inclusive between 1.5 and 10". The term HLB (Hydrophilic Lipophilic Balance) is well known to those skilled in the art, and refers to the hydrophilic-lipophilic balance of a surfactant.

The HLB or hydrophilic-lipophilic balance of the surfactant (s) used according to the invention is the HLB according to GRIFFIN defined in the publication J. Soc. Cosm. Chem. 1954 (Volume 5), pages 249-256 or the HLB determined experimentally is as described in the book by the authors F. PUISIEUX and M. SEILLER, entitled "GALENICA 5: The dispersed systems - Volume I - Surface agents and emulsions - Chapter IV - Notions of HLB and critical HLB, pages 153-194 - section 1.1.2 Experimental determination of HLB, pages 164-180 Preferably, the value of the calculated HLBs should be The calculated HLB is defined as the following coefficient: calculated HLB = 20 x molar mass of the hydrophilic part / total molar mass.

For an oxyethylenated fatty alcohol, the hydrophilic part corresponds to the oxyethylene units condensed on the fatty alcohol and the calculated HLB then corresponds to the HLB according to Griffin defined in the publication J. Soc. Cosm. Chem. 1954 (Volume 5), pages 249-256. For an ester or an amide, the hydrophilic portion is naturally defined as being beyond the carbonyl group, starting from the fatty chain (s). Of course, this quantity is additive and for a mixture of molecules, the calculated HLB corresponds to the weighted average weight of the HLBs calculated for each molecule. According to a particular embodiment of the invention, the melting point of the nonionic surfactants of HLB calculated from 1.5 to 10 is greater than 30 ° C, and more preferably greater than 40 ° C. As examples of nonionic surfactants (i), mention may be made of: oxyalkylenated (C 8 -C 24) alkyl phenols; saturated or unsaturated, linear or branched, oxyalkylenated C 8 -C 30 alcohols; saturated or unsaturated, linear or branched, optionally oxyalkylenated C 8 -C 30 amides; saturated or unsaturated, linear or branched, C 8 -C 30 acid esters of polyethylene glycols; saturated or unsaturated linear or branched C 8 -C 30 acid esters and optionally polyoxyethylenated sorbitol esters; - esters of C8-030 acids, saturated or unsaturated, linear or branched polyglycerolated - vegetable oils oxyethylenated, saturated or not; C8-C30 alkyl glucosides; condensates of ethylene oxide and / or propylene oxide, among others, alone or in mixtures. Oxyethylenated and / or oxypropylenated silicones. The surfactants having a number of moles of ethylene oxide and / or propylene preferably vary from 1 to 100, better still from 2 and 10, more preferably from 2 to 6. As examples of solid nonionic compounds which can The following compounds may be mentioned: INCI name Trade reference HLB calculated STEARETH-2 Brij 72 (Uniqema) 4.9 * STEARETH-3 Isoxal 5 (Vevy) 6.6 * STEARETH-4 Nikkol BS- 4 (Nikko) 7.9 * STEARETH-5 Jeecol SA-5 (Jeen) 9.0 * STEARETH-6 Emalex 606 (Nihon Emulsion) 9.9 * CETETH-2 Brij 52 (Uniqema) 5.3 * CETETH-3 Emalex 103 (Nihon Emulsion) 7.1 * CETETH-4 Lipocol C-4 (Lipo) 8.4 * CETETH-5 Volpo C5 (Croda) 9.5 * CETEARETH-2 Volpo CS2 (Croda) 5.1 * CETEARETH- 3 Jeecol CS-3 (Jeen) 6.8 * CETEARETH-4 Lipocol SC-4 (Lipo) 8.1 * CETEARETH-5 Volpo CS5 (Croda) 9.2 * BEHENETH-5 Nikkol BB-5 (Nikko) 8, 1 * COCAMIDE MEA Comperlan 100 (Cognis) 4.8 COCAMIDE MIPA Ninol M-10 (Stepan) 5.6 COCAMIDE DEA Comperlan KD (Cognis) 7.1 STEARAMIDE MEA Monamid S (Uniqema) 3.7 STEARAMIDE DEA Lipamide S (Lipo) 5.6 MYRISTAMIDE DEA Jeemide MRCA (Jeen) 6.6 MYRISTAMIDE MEA Witcamide MM (Witco) 4.4 POLYGLYCERYL-2 Emalex DSG-2 (Ikeda) 4.7 DISTEARATE POLYGLYCERYL-3 Cithrol 2623 (Croda) 6.2 DISTEARATE POLYGLYCERYL-2 Nikkol DGMS (Nikko) 7.6 STEARATE POLYGLYCERYL-3 Radiasurf 7248 (Atofina) 9.4 STEARATE PEG-2 STEARATE Sedefos 75 (Gattefosse) 5.6 PEG- 3 STEARATE Tegin D 1102 (Goldschmidt) 7.2 PEG-4 STEARATE Cithrol 2MS (Croda) 8.4 SORBITAN DISTEARATE Sorbon S-66 (Toho) 4.7 SORBITAN PALMITATE Span 40 (Uniqema) 8.1 SORBITAN STEARATE Span 60 ( Uniqema) 7.6 SORBITAN TRISTEARATE Span 65 (Uniqema) 3.3 MYRISTYL GLUCOSIDE Montanov 14 (Seppic) 9.5 CETEARYL GLUCOSIDE Tego Care CG 90 (Degussa) 8.6 ARACHIDYL GLUCOSIDE Montanov 202 (Seppic) 7.8 (*) corresponding to the HLB calculated according to Griffin's method. Preferably, the nonionic surfactant (s) having an HLB ranging from 1.5 to 10 and solid at room temperature and at atmospheric pressure are chosen. among the mono or polyoxyalkylenated nonionic surfactants, the oxyalkylenated units being more particularly oxyethylenated, oxypropylene units, or combinations thereof. Advantageously, the nonionic surfactants do not comprise oxypropylene units. In accordance with a preferred embodiment of the invention, the oxyalkylenated nonionic surfactants are chosen from oxyethylenated C 8 -C 30 alcohols comprising from 1 to 6 moles of ethylene oxide. More preferably, said surfactants are chosen from solid nonionic surfactants having an HLB ranging from 2.5 to 8.

According to the invention, the emulsion (A) preferably contains from 0.1 to 30% by weight of one or more surfactants having an HLB ranging from 1.5 to 10 and solid at ambient temperature and at atmospheric pressure, more preferably from 0.5 to 20% by weight, and more preferably from 1 to 10% by weight, relative to the total weight of the emulsion (A).

The emulsion (A) may contain other surfactants having a higher HLB 10. In this case, the surfactant or surfactants are chosen from nonionic, cationic, anionic or amphoteric surfactants and preferably from nonionic surfactants. or anionic.

However, according to a particular embodiment, the emulsion (A) contains no nonionic surfactants other than that or those of HLB between 1.5 and 10 and solid at room temperature and at atmospheric pressure.

The composition (B) may further contain one or more HLB nonionic surfactants ranging from 1.5 to 10 and solid at room temperature and at atmospheric pressure, their content may vary from 0.1 to 30% by weight, preferably from 0.5 to 20% by weight, and even more particularly from 1 to 10% by weight relative to the total weight of the composition (B).

In the ready-to-use composition resulting from the mixing of the compositions (A) and (B), the content of nonionic surfactants of HLB ranging from 1.5 to 10 and solid at room temperature and at atmospheric pressure can vary from 0, 1 and 30% by weight, preferably from 0.5 to 20% by weight, and even more particularly from 1 to 10% by weight relative to the total weight of the mixture of compositions (A) and (B). the oils The composition (A) of the process of the invention comprises at least one oil.

The emulsion (A) may contain one or more oils of different natures. By "oil" is meant a "fatty substance" which is liquid that is to say which is capable of flowing under the action of its own weight at ambient temperature (25 ° C.), and at atmospheric pressure ( 105 Pa). Preferably the viscosity at a temperature of 25 ° C and at a shear rate of 1s-1 of the oil is between 10-3 Pa.s and 2 Pa.s. It can be measured with a Thermo Haake RS600 rheometer with plane cone geometry or equivalent device. The composition (A) contains at least 30% by weight of oil (s), preferably at least 50% by weight of oil (s) relative to the total weight of the composition. In particular, the oils are chosen from C6-C16 lower alkanes; non-silicone oils of animal origin; glycerides of vegetable or synthetic origin; hydrocarbons, linear or branched, of mineral or synthetic origin of more than 16 carbon atoms; fluorinated oils; liquid fatty alcohols; liquid fatty esters; non-salified liquid fatty acids; silicone oils; or their mixtures. The term "non-silicone oil" means an oil containing no silicon atom (Si) and a "silicone oil" an oil containing at least one silicon atom. With regard to the lower alkanes, the latter comprise from 6 to 16 carbon atoms, are linear or branched, possibly cyclic. By way of example, mention may be made of hexane, dodecane and isoparaffins, such as isohexadecane and isodecane. Non-silicone oils of animal origin include, for example, perhydrosqualene. Glycerides of plant or synthetic origin that may be mentioned include liquid triglycerides of fatty acids containing from 6 to 30 carbon atoms, for instance triglycerides of heptanoic or octanoic acids or, for example, sunflower, corn and soybean oils. , squash, grape seed, sesame, hazelnut, apricot, macadamia, arara, sunflower, castor oil, avocado, triglycerides of caprylic / capric acids such as those sold by the company Stearineries Dubois or those sold under the names Miglyol® 810, 812 and 818 by the company Dynamit Nobel, jojoba oil, shea butter oil. With regard to hydrocarbons, linear or branched, of mineral or synthetic origin of more than 16 carbon atoms, mention may be made especially paraffin oils, volatile or not, and their derivatives, petroleum jelly, oil of vaseline, polydecenes, hydrogenated polyisobutene such as Parleam®. The fluorinated oils may especially 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 the company 3M, or bromoperfluorooctyl sold under the name "Foralkyl®" by the company Atochem; nonafluoromethoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as 4-trifluoromethyl perfluoromorpholine sold under the name "PF 5052®" by the company 3M.

The liquid fatty alcohols, therefore different from the solid fatty alcohols (i) that are suitable for the implementation of the invention, are more particularly chosen from unsaturated or branched alcohols containing from 8 to 30 carbon atoms. There may be mentioned, for example, 2-octyldodecan-1-ol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleic alcohol or linoleic alcohol.

The fatty acids that can be used in the context of the invention are more particularly chosen from unsaturated or branched carboxylic acids containing from 6 to 30 carbon atoms, in particular from 9 to 30 carbon atoms. They are advantageously chosen from oleic acid, linoleic acid, linolenic acid and isostearic acid. With regard to the fatty acid esters and / or fatty alcohols, different from the solid esters ii) and different from the glycerides mentioned above, mention may in particular be made of liquid esters of saturated or unsaturated, linear aliphatic mono- or polyacids, linear or branched C1-C26 and linear or branched C1-C26 saturated or unsaturated aliphatic or monohydric alcohols or alcohols, the total number of carbon of the esters being greater than or equal to 10. Preferably, for the esters of monoalcohols, one at least one of the alcohol or the acid from which the esters of the invention are derived is branched.

Among monoesters of monoacids and of monoalcohols, mention may be made of ethyl and isopropyl palmitates, alkyl myristates such as isopropyl or ethyl myristate, isocetyl stearate, sodium isononanoate and the like. 2-ethylhexyl, isodecyl neopentanoate, and isostearyl neopentanoate. It is also possible to use esters of C 4 -C 22 di- or tricarboxylic acids and of C 1 -C 22 alcohols and esters of mono-, di- or tricarboxylic acids and of non-sugar alcohols di-, tri- , tetra- or pentahydroxylated C4-026.

These include: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyldodecyl stearoyl stearate; pentaerythrityl monoricinoleate; pentaerythrityl tetraisononanoate; pentaerythrityl tetrapelargonate; pentaerythrityl tetraisostearate; pentaerythrityl tetraoctanoate; propylene glycol dicaprylate; propylene glycol dicaprate, tridecyl erucate; triisopropyl citrate; triisotearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate, propylene glycol dioctanoate; neopentyl glycol diheptanoate; diethylene glycol diisanonate; and polyethylene glycol distearates. Among the esters mentioned above, it is preferred to use ethyl, isopropyl, myristyl, cetyl, stearyl palmitates, ethyl-2-hexyl palmitate, 2-octyldecyl palmitate, myristates of alkyls such as isopropyl, butyl, cetyl, 2-octyldodecyl myristate, hexyl stearate, propylene glycol dicaprylate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate and isononyl isononanate, cetyl octanoate. The composition may also comprise, as liquid fatty ester, esters and diesters of C 6 -C 30 and preferably C 12 -C 22 fatty acids and sugars. It is recalled that "sugar" is understood to mean oxygenated hydrocarbon compounds which have several alcohol functions, with or without an aldehyde or ketone function, and which contain at least 4 carbon atoms. These sugars can be monosaccharides, oligosaccharides or polysaccharides.

Suitable sugars include, for example, sucrose, glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose, and their derivatives, especially alkyl, such as methylated derivatives such as methylglucose. The esters of sugars and of fatty acids may be chosen in particular from the group comprising the esters or mixtures of esters of sugars described previously and of linear or branched, saturated C 6 -C 30, preferably C 12 -C 22, fatty acids. or unsaturated. If unsaturated, these compounds may comprise one to three carbon-carbon double bonds, conjugated or otherwise. The esters according to this variant can also be chosen from mono-, di-, tri- and tetraesters, polyesters and their mixtures. These esters may be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates, arachidonates, and mixtures thereof, such as, in particular, the oleopalmitate, oleostearate and palmito-stearate mixed esters.

More particularly, mono- and di-esters, and especially mono- or dioleates, stearates, behenates, oleopalmitates, linoleates, linolenates, oleostearates, sucrose, glucose or methylglucose are used.

By way of example, mention may be made of the product sold under the name Glucate® DO by the company AM ERCHOL, which is a methylglucose dioleate. Among the sugar esters, it is also possible to use pentaerythrityl esters, preferably pentaerythrityl tetraisisostea, pentaerythrityl tetraoctanoate, caprylic and capric acid hexaesters mixed with dipentaerythritol. According to a particular embodiment of the invention, the oil or oils of the composition (A) are chosen from liquid silicones. By "liquid silicone" is meant an organopolysiloxane liquid at ordinary temperature (25 ° C.) and at atmospheric pressure (760 mmHg, ie 1.013 × 10 5 Pa). Preferably, the silicone is chosen from liquid polydialkylsiloxanes, in particular liquid polydimethylsiloxanes (PDMS), and liquid polyorganosiloxanes comprising at least one aryl group.

These silicones can also be organomodified The organomodified silicones that can be used in accordance with the invention are liquid silicones as defined above and comprising in their structure one or more organofunctional groups attached via a hydrocarbon-based group. Organopolysiloxanes are further defined in Walter Noll's "Chemistry and Technology of Silicones" (1968), Academie Press. They can be volatile or nonvolatile. When they are volatile, the silicones are more particularly chosen from those having a boiling point of between 60 ° C. and 260 ° C., and even more particularly from: (i) cyclic polydialkylsiloxanes containing from 3 to 7, preferably from 4 to 5 silicon atoms. It is, for example, octamethylcyclotetrasiloxane sold in particular under the name VOLATILE SILICONE® 7207 by UNION CARBIDE or SILBIONE® 70045 V2 by RHODIA, decamethylcyclopentasiloxane marketed under the name VOLATILE SILICONE® 7158 by UNION CARBIDE, and SILBIONE ® 70045 V5 by RHODIA, the dodecamethylcyclopentasiloxane marketed under the name of SILSOFT 1217 by MOMENTIVE PERFORMANCE MATERIALS and their mixtures. Mention may also be made of cyclocopolymers of the dimethylsiloxane / methylalkylsiloxane type, such as the VOLATILE® SILICONE FZ 3109 marketed by UNION CARBIDE, of formula: pD "-D 'D" - D' -1 CH 3 with D ": - Si Examples of cyclic polydialkylsiloxane mixtures with organic compounds derived from silicon, such as the mixture of octamethylcyclotetrasiloxane and tetramethylsilylpentaerythritol (50/50), may also be mentioned: ## STR1 ## and the mixture of octamethylcyclotetrasiloxane and oxy-1,1 '- (hexa-2,2,2', 2 ', 3,3'-trimethylsilyloxy) bis-neopentane (ii) linear volatile polydialkylsiloxanes having 2 to 9 atoms of silicon and having a viscosity less than or equal to 5.10-6m2 / s at 25 ° C. It is, for example, decamethyltetrasiloxane marketed in particular under the name "SH 200" by Toray Silicone. in this class are also described in the article published in Cosmetics and Toiletries, Vol. 91, Jan. The viscosity of the silicones is measured at 25 ° C. according to ASTM 445 Appendix C. Non-volatile polydialkylsiloxanes can also be used.

These non-volatile silicones are more particularly chosen from polydialkylsiloxanes, among which may be mentioned mainly polydimethylsiloxanes with trimethylsilyl end groups. Among these polydialkylsiloxanes, mention may be made, without limitation, of the following commercial products: SILBIONE® oils of the 47 and 70 047 series or the MIRASIL® oils marketed by RHODIA, such as, for example, 70 047 V 500 000 oil; oils of the MIRASIL® series sold by RHODIA; the oils of the 200 series of Dow Corning, such as DC200 having a viscosity of 60,000 mm 2 / s; - VISCASIL® oils from GENERAL ELECTRIC and some oils from SF series (SF 96, SF 18) from GENERAL ELECTRIC. Mention may also be made of polydimethylsiloxanes with dimethylsilanol end groups known under the name of dimethiconol (CTFA), such as the oils of the 48 series from the company RHODIA. Among the silicones with aryl groups include polydiarylsiloxanes, especially polydiphenylsiloxanes, and polyalkylarylsiloxanes. By way of example, mention may be made of the products sold under the following names: - SILBIONE® oils of the 70 641 series from RHODIA; - the RHODORSIL® 70 633 and 763 RHODIA series of oils; - DOW CORNING 556 COSMETIC GRAD FLUID oil from Dow Corning; the silicones of the PK series of BAYER, such as the product PK20; certain oils of the SF series of GENERAL ELECTRIC such as SF 1023, SF 1154, SF 1250, SF 1265. The organomodified liquid silicones may in particular have polyethyleneoxy and / or polypropyleneoxy groups. We can mention the silicone KF-6017 proposed by Shin ETSU and the oils SILWET® L 722, L 77 from UNION CARBI DE. According to a preferred variant, the oil or oils are chosen from C6-C16 lower alkanes; glycerides of vegetable or synthetic origin; hydrocarbons, linear or branched, of mineral or synthetic origin of more than 16 carbon atoms; liquid fatty alcohols; liquid fatty esters; or their mixtures. Even more preferentially, the oil or oils are chosen from C6-C16 lower alkanes; hydrocarbons, linear or branched, of mineral or synthetic origin of more than 16 carbon atoms; liquid fatty alcohols; or their mixtures. Preferably, the oil or oils are chosen from liquid petroleum jelly, polydecenes, octyldodecanol or isostearyl alcohol or their mixtures.

In the ready-to-use composition resulting from the mixing of the compositions (A) and (B), the amount of oil can represent from 7.5% to 60% of the total weight of the composition. Preferably the ready-to-use composition resulting from the mixture of compositions (A) and (B) comprises at least 25% oil (s). The composition (B) may or may not comprise at least one oil. If it contains oils, their total content may vary from 0.5 to 40% of the weight of the composition (B). Thermo-thickening polymers The term "thermo-thickening polymer" or "thermo-gelling agent" means a polymer whose viscosity in solution or in dispersion increases, at least within a certain temperature range, increases with the increase in temperature.

Preferably, the thermo-thickening polymers according to the invention are water-soluble and comprise water-soluble units and units having in water a lower critical LCST demixing temperature, the demixing temperature by heating in aqueous solution of said LCST units being from 5 to 40 ° C for a mass concentration in water of 1% of said units and the concentration of said polymer in said composition being such that its gelling temperature is in the range of 5 to 40 ° C. The term "water-soluble polymer" generally means a polymer soluble in water, at a temperature of 5 to 80 ° C, in a proportion of at least 10 g / l, preferably at least 20 g / l. However, the term "water-soluble polymer" is also understood to mean a polymer which does not necessarily have the above-mentioned solubility, but which in aqueous solution at 1% by weight, from 5 to 80 ° C., makes it possible to obtain a macroscopically homogeneous solution. and transparent, that is to say having a maximum transmittance value of light, regardless of the wavelength between 400 and 800 nm, through a sample of 1 cm thick, at least 85%, preferably at least 90%. By "water-soluble units" is generally meant that these units are water-soluble units, at a temperature of 5 to 80 ° C, at a rate of at least 10 g / l, preferably at least 20 g. / I. However, water-soluble units are also understood to mean units which do not necessarily have the above-mentioned solubility, but which in aqueous solution at 1% by weight, from 5 to 80 ° C., make it possible to obtain a macroscopically homogeneous solution and transparent, that is to say having a maximum transmittance value of the light, whatever the wavelength between 400 and 800 nm, through a sample of 1 cm thick, of at least 85 %, preferably at least 90%. These water-soluble units do not have a demixing temperature by LCST heating. In this regard, it is useful to remember that LCST units are preferably units whose solubility in water is changed beyond a certain temperature. These are units with a temperature of demixing by heating (or cloud point) defining their zone of solubility in the water. The minimum demixing temperature obtained as a function of the polymer concentration consisting solely of LCST units is called "LCST" (Lower Critical Solution Temperature). For each LCST polymer concentration, a heating demixing temperature is observed. It is greater than the LCST which is the minimum point of the curve. Below this temperature, the polymer is soluble in water, above this temperature, the polymer loses its solubility in water. These LCST units of the polymer have, according to the invention, preferably a heating demixing temperature of 5 to 40 ° C for a mass concentration in water of 1% by weight of said LCST units. Preferably, the demixing temperature by heating in aqueous solution of the LCST units of the polymer is from 10 to 35 ° C for a mass concentration in water of 1% of said LCST units. More preferably, the concentration of the polymer is such that the gelling temperature is in the range of 10 to 35 ° C.

The polymer having the structure described above with water-soluble units and specific LCST units defined above has, in aqueous solution, gelling properties above a critical temperature, or thermogelling properties. These heating gelling properties observed above the demixing temperature of the LCST chains are described in particular in the following documents: [1] D. Hourdet et al., Polymer, 1994, vol. 35, No. 12, pp. 2,624-2,630. [2] F. ALLORET et al., Coll. Polym. Sci., 1995, vol. 273, No. 12, pages 1 163-1 173. [3] F. L'ALLORET, Journal of the French Institute of Petroleum, 1997, vol. 52, No. 2, pages 117-128.

They are due to the association of the LCST chains within hydrophobic microdomains beyond their demixing temperature, thus forming nodes for crosslinking between the main chains. These gelling properties are observed when the polymer concentration is sufficient to allow interactions between LCST grafts carried by different macromolecules. The minimum concentration required, called the "critical concentration of aggregation or CAC", is evaluated by rheology measurements: it is the concentration from which the viscosity of an aqueous solution of the polymers of the invention becomes higher. the viscosity of a solution of the equivalent polymer having no LCST chains. Beyond the CAC, the polymers of the invention preferably have gelling properties when the temperature becomes greater than a critical value called "gelling temperature or Tgel". According to the data of the literature, a good agreement exists between Tgel and the demixing temperature of the chains with LCST, under the same conditions of concentrations. The gelling temperature of an aqueous solution of a polymer of the invention is determined by rheology measurements: it is the temperature from which the viscosity of the solution of a polymer of the invention becomes higher than the viscosity of a solution of the equivalent polymer having no LCST chains. The polymers of the invention are preferably characterized by a specific gelling temperature generally from 5 to 40 ° C., preferably from 10 to 35 ° C., for a mass concentration in water, for example equal to 2% by weight. . The polymers used in the invention may be block polymers (or blocks), or graft polymers, which comprise, on the one hand, water-soluble units and, on the other hand, units with an LCST as defined above. . It is specified that, in the present text, the water-soluble units or the units with LCST of the polymers implemented according to the invention are defined as not including the groups linking together, on the one hand, said water-soluble units and, d on the other hand, said units at LCST. Said linking groups result from the reaction, during the preparation of the polymer, of the reactive sites borne, on the one hand, by the precursors of said water-soluble units and, on the other hand, by the precursors of said LCST units. The polymers employed in the context of the invention may therefore be block polymers, for example comprising sequences consisting of water-soluble units alternating with LCST sequences.

These polymers may also be in the form of graft polymers whose skeleton is formed of water-soluble units, said skeleton carrying scions consisting of LCST units.

Said polymers may be partially crosslinked. These water-soluble units are in whole or in part capable of being obtained by polymerization, in particular radical, or by polycondensation, or are constituted in whole or in part by existing natural or modified natural polymers. By way of example, the water-soluble units are wholly or partly capable of being obtained by polymerization, in particular radical polymerization, of at least one monomer chosen from the following monomers: (meth) acrylic acid; the vinyl monomers of formula (I) below: H 2 C = C (R) -C (O) -X (I) Formula (I) in which: R is chosen from H, C 1 -C 6 alkyl such as -CH 3 , -C2H5 or -C3H7; and - X is chosen from: - alkyl oxides of the type -OR 'where R' is a hydrocarbon radical, linear or branched, saturated or unsaturated, having from 1 to 6 carbon atoms, optionally substituted by at least one atom halogen (iodine, bromine, chlorine, fluorine); a sulphonic group (-SO3), sulphate (-SO4 phosphate (-PO41-12), hydroxy (-OH), primary amine (-NH2), secondary amine (-NHR1), tertiary (-NRi R2) or quaternary (- N + R 1 R 2 R 3) with R 1, R 2 and R 3 being, independently of one another, a linear or branched, saturated or unsaturated hydrocarbon radical having 1 to 6 carbon atoms, provided that the sum of the carbon atoms of R '+ R1 + R2 + R3 does not exceed 7, and - the groups -NH2, -NHR4 and -NR4R5 in which R4 and R5 are independently of each other linear or branched, saturated or unsaturated hydrocarbon radicals having 1 to 6 carbon atoms, provided that the total number of carbon atoms of R4 + R5 does not exceed 7, said R4 and R5 being optionally substituted by a halogen atom (iodine, bromine, chlorine, fluorine) a hydroxy (-OH) sulfonic (-SO3), sulphate (-SO4), phosphate (-PO41-12), primary amine (-NH2), secondary amine (-NHR1), tertiary (-NR1R2) and / or or quaternary (-N + R1R2R3) with R1, R2 and R3 being, independently of one another, a hydrocarbon radical, linear or branched, saturated or unsaturated having 1 to 6 carbon atoms, provided that the sum of carbon atoms of R4 + R5 + + R2 + R3 does not exceed 7; maleic anhydride; - itaconic acid; the vinyl alcohol of formula CH 2 = CHOH; vinyl acetate of formula CH2 = CH-OCOCH3; N-vinyllactams such as N-vinylpyrrolidone, N-vinylcaprolactam and N-butyrolactam; vinyl ethers of formula CH2 = CHOR6 in which R6 is a linear or branched, saturated or unsaturated hydrocarbon-based radical having from 1 to 6 carbons; water-soluble derivatives of styrene, in particular styrene sulphonate; dimethyldiallyl ammonium halide such as dimethyldiallyl ammonium chloride; and vinylacetamide.

The polycondensates and natural or modified natural polymers which may constitute all or part of the water-soluble units are chosen from one or more of the following components: water-soluble polyurethanes, xanthan gum, in particular that marketed under the names Keltrol T and Keltrol SF by Kelco; or Rhodigel SM and Rhodigel 200 from Rhodia; alginates (Kelcosol de Monsanto) and their derivatives such as propylene glycol alginate (Kelcoloid LVF from Kelco); cellulose derivatives and in particular carboxymethylcellulose (Aquasorb A500, Hercules), hydroxypropylcellulose, hydroxyethylcellulose and quaternized hydroxyethylcellulose; galactomannans and their derivatives, such as Konjac gum, guar gum, hydroxypropylguar, hydroxypropylguar modified with sodium methylcarboxylate groups (Jaguar XC97-1, Rhodia), hydroxypropyltrimethylammonium guar chloride. We can also mention polyethylene imine. Preferably, the water-soluble units have a molar mass of from 1000 g / mol to 5,000,000 g / mol when they constitute the water-soluble backbone of a graft polymer. These water-soluble units preferably have a molar mass ranging from 500 g / mol to 100,000 g / mol when they constitute a block of a multiblock polymer. The LCST units of the polymers used in the invention can be defined as units whose solubility in water is changed beyond a certain temperature. These are units with a temperature of demixing by heating (or cloud point) defining their zone of solubility in the water. The minimum demixing temperature obtained as a function of the polymer concentration is called "LCST" (Lower Critical Solution Temperature). For each polymer concentration, a demixing temperature by heating is observed; it is greater than the LCST which is the minimum point of the curve. Below this temperature, the polymer constituting the LCST unit is soluble in water; above this temperature, the polymer constituting the LCST unit loses its solubility in water.

Some of these LCST polymers are especially described in the following articles: TAYLOR et al, Journal of Polymer Science, part A: Polymer Chemistry, 1975, 13, 2551; J. BAI LEY et al, Journal of Applied Polymer Science, 1959, 1.56; HESKINS et al, Journal of Macromolecular Science, Chemistry A2, 1968, vol.8, 1441. By water-soluble at temperature T, it is meant that the units have a solubility at T, of at least 1 g / I, preferably at least 2 g / l. The measurement of the LCST can be done visually: the temperature at which the cloud point of the aqueous solution appears is determined; this cloud point results in opacification of the solution, or loss of transparency. In general, a transparent composition will have a maximum light transmittance value, regardless of wavelength between 400 and 800 nm, through a 1 cm thick sample, of at least 85 %, preferably at least 90%. Transmittance can be measured by placing a 1 cm thick sample in the light beam of a spectrophotometer working in the wavelengths of the light spectrum. The LCST units of the polymers used in the invention may consist of one or more polymers selected from the following polymers: polyethers such as propylene polyoxide (POP), random copolymers of ethylene oxide (OE) ) and propylene oxide (OP), polyvinylmethylethers, N-substituted acrylamide copolymers and copolymers having an LCST, such as poly N-isopropylacrylamide (NIPAM) and poly N-ethylacrylamide, and polyvinylcaprolactam and copolymers of vinyl caprolacatam. Preferably, the LCST units consist of propylene polyoxide (POP), where n is an integer of 10 to 70, or random copolymers of ethylene oxide (OE) and propylene oxide (OP). ), represented by the formula: (0E). Wherein m is an integer from 1 to 40, preferably from 2 to 20, and n is an integer from 10 to 60, preferably from 20 to 50. Preferably, the molar mass of these LCST units is from 500 to 5,300 g / mol, more preferably from 1,500 to 4,000 g / mol. It has been found that the statistical distribution of the EO and OP units results in the existence of a lower critical demixing temperature, beyond which macroscopic phase separation is observed. This behavior is different from block copolymers (0E) (OP), which micellize beyond a so-called critical micellization temperature (aggregation at the microscopic scale). The units with an LCST may thus especially be propylene polyoxides such as Dow Chemical Polyglycols P3000 and P4000, random copolymers of ethylene oxide and propylene oxide, amines, in particular monoamines, diamines or triamines. These polymers, before reaction, carry reactive sites, in this case amino groups, reacting with the reactive sites of the water-soluble polymers, for example carboxyl groups, to give the final polymer used in the invention. In the final polymer, the water-soluble units are linked to the LCST units by linking groups resulting from the reaction of the reactive groups or sites carried respectively by the LCST units and the precursors of the water-soluble units. These linking groups will be, for example, amide, ester, ether or urethane groups. Among these commercially available LCST polymers, mention may be made of the copolymers sold under the name Jeffamine by Huntsman, and in particular Jeffamine XTJ-507 (M-2005), Jeffamine D-2000 and Jeffamine XTJ-509 (or T-2). 3000). The units with an LCST may also be derived from OH-terminated 0E / OP random copolymers, such as those sold under the name Polyglycols P41 and B11 by Clariant. It is also possible to use in the invention as LCST units, N-substituted copolymeric and polymeric derivatives of acrylamide having an LCST, as well as polyvinyl caprolactam and vinylcaprolactam copolymers.

By way of examples of N-substituted copolymeric and polymeric derivatives of acrylamide having an LCST, mention may be made of poly-N-isopropylacrylamide, poly-N-ethylacrylamide and copolymers of N-isopropylacrylamide (or N-ethylacrylamide) and a vinyl monomer chosen from the monomers having the formula (I) given above, maleic anhydride, itaconic acid, vinylpyrrolidone, styrene and its derivatives, dimethyldiallyl ammonium chloride, vinylacetamide, vinyl ethers and derivatives of vinyl acetate.

The molar mass of these polymers is preferably from 1,000 g / mol to 500,000 g / mol, preferably from 2,000 to 50,000 g / mol. The synthesis of these polymers can be carried out by radical polymerization using a pair of initiators such as aminoethanethiol hydrochloride, in the presence of potassium persulfate, in order to obtain precursor oligomers having an aminated reactive end. By way of examples of vinylcaprolactam copolymers, mention may be made of vinyl caprolactam copolymers and of a vinyl monomer having the formula (I) given above, or of a monomer chosen from maleic anhydride, itaconic, vinylpyrrolidone, styrene and its derivatives, dimethyldiallyl ammonium chloride, vinylacetamide, vinyl alcohol, vinyl acetate, vinyl ethers and vinyl acetate derivatives.

The molar mass of these vinylcaprolactam polymers or copolymers is generally from 1,000 g / mol to 500,000 g / mol, preferably from 2,000 to 50,000 g / mol.

The synthesis of these compounds can be carried out by radical polymerization using a pair of initiators such as aminoethanethiol hydrochloride, in the presence of potassium persulfate, in order to obtain LCST units having an amine reactive end. .

The mass proportion of the LCST units in the final polymer is preferably from 5% to 70%, especially from 10% to 60%, and particularly from 20% to 50% by weight, relative to the final polymer. It has been seen above that the temperature of demixing by heating of said LCST units of the polymer used in the invention is from 5 to 40 ° C, preferably from 10 to 35 ° C, for a mass concentration in water, of 1% by weight of said LCST units.

The polymers employed in the context of the invention may be readily prepared by those skilled in the art on the basis of their general knowledge, using grafting, copolymerization or coupling reaction methods.

When the final polymer is in the form of a graft polymer, in particular having a water-soluble backbone with side chains or grafts to LCST, it is possible to prepare it by grafting the LCST units having at least one reactive end or reactive site. , especially amine (e), on a water-soluble polymer forming the backbone, bearing at least 10% (in mole) of reactive groups such as carboxylic acid functions. This reaction may be carried out in the presence of a carbodiimide such as dicyclohexylcarbodiimide or 1- (3-dimethylaminopropyl) -3-ethyl carbodiimide hydrochloride, in a solvent such as N-methylpyrrolidone or water.

Another possibility for preparing graft polymers is to copolymerize, for example, an LCST (LCST chain previously described with a vinyl end) macromonomer and a water-soluble vinyl monomer such as acrylic acid or vinyl monomers having the formula (I).

When the final polymer is in the form of a block or block polymer, it can be prepared by coupling between water-soluble units and units with LCST, these units having complementary reactive sites at each end.

In the case of grafting processes and coupling methods, the reactive sites of the units with an LCST can be amine functions, in particular monoamines, diamines or triamines, and OH functions. In this case, the reactive sites of the water-soluble units may be carboxylic acid functions.

The groups linking the water-soluble units and the LCST units will therefore be, for example, amide groups or ester groups. The thermo-thickening polymers in accordance with the invention may be chosen from those described in the following patent applications and patents: the patent applications EP 1307501, EP 1355990, EP 1355625, FR 2856923, EP 1493774 and WO 04/006872, the US Patents 6,878,754 and US 6,689,856; the patent applications EP 1407791, EP 1416044, FR 2788008, WO 03/008462, FR 2694939, EP 0629649, US 6645476, WO 97/00275, WO 98/06438, WO 98/29487, WO 98/48768, WO 98 / 50005, WO 00/07603, WO 02/076392, FR 2820976, WO 00/35961, WO 02/032560, EP 0692506, US 6870012, WO 03/106536, WO 00/38651, WO 00/00222, WO 01/41735 , US 2003/0099709, GB 2408510.

Thermosensitive water-soluble polymers of particular interest can be chosen from: (1) polyurethanes comprising polyethylene oxide / polyoxypropylene / polyethylene oxide (or POE-POP-POE) groups such as those described in applications EP-1407791 (Example 1 describes a polyurethane derived from the polycondensation of Pluronic F-127 with hexamethylene diisocyanate), EP-A-692506, FR-A-2840907, WO 03/106536, US-A2005175573, US-A-5702717. Such polyurethanes are obtained in known manner by polycondensation of thermosensitive POE-POP-POE diblock diisocyanates and diol and especially described in the aforementioned applications. Diisocyanates that may be mentioned include aliphatic diisocyanates such as ethylene diisocyanate, hexamethylene diisocyanate, decamethylene diisocyanate, and also methylene 4,4'-bis-dicyclohexyl diisocyanate, diphenylmethane 4,4'-diisocyanate and xylylene diisocyanate. phenylene diisocyanate, tolylene diisocyanate, dimethyl diphenylene diisocyanate. POE-POP-POE triblock diols used can have the following formula (II): HO- (CH2-CH2-O) x- (CH2-CH (CH3) -O) y- (CH2-CH2-O) xH (II) Formula (II) wherein 20 <x <120 and 20 <y <120 such as Pluronics, especially Pluronic F-127. The polyurethane may comprise urea and / or allophanate groups, as described in applications WO 03/106536 and US-A-5702717. The polycondensation may also be carried out in the presence of other reactive compounds such as diols containing one or more groups. carboxylic acid or a tertiary amine group (especially amino methyl) or else as monohydroxy ethylene polyoxides. In particular, the polycondensation can be carried out in the presence of water. The polyurethane may be linear or branched. (2) multiblock copolymers comprising a poly block of N-isopropylamide and n-butylacrylate randomly distributed and a polyethylene glycol block such as those described in applications EP-A-1407791. In particular, it is possible to use the product sold under the trade name TGP-20 by the company MEBIOL. (3) copolymers of acrylamidomethylpropanesulphonic acid (or AMPS), such as those described in US Pat. No. 6,645,476 and US Pat. No. 6,689,856, and their salts (in particular sodium or ammonium salts) and acid ester macromonomers ( meth) acrylic and C2-4 alkyl alkoxylated (in particular ethylene oxide (OE) and / or propylene oxide (OP) (in particular with 1 to 500 alkoxylated alkyl units, more preferably from 3 to 50 and still more preferably 7 to 30 units) Such macromonomers may also be derived from random amino acid copolymers 0E / OP, especially mono, di or triamine amines of Jeffamine type from HUNTSMAN, and in particular Jeffamine XTJ-507 (M-2005), Jeffamine D-2000 and Jeffamine XTJ-509 (or T-3000) Such macromonomers may also be derived from random OH / PO-terminated statistical copolymers, such as those sold under the name Polyglycols P41 and B11 by Clariant, On will more particularly use the acid copolymer ammonia-neutralized polyacrylamido-2-methylpropane sulfonic acid (AMPS) (40% by weight relative to the total weight of the polymer) and a polyether methacrylate macromonomer (60% by weight) in which the polyether is a POE random copolymer / POP comprising 5.5 moles of ethylene oxide (OE) units and 31 propylene oxide units. (4) the copolymers as described in the patent application EP1307501 constituted by a backbone of polyacrylic acid (PAA) carrying side chains or grafts constituted by units with an LCST chosen from: (i) those of the type of random copolymers d ethylene oxide (0E) and propylene oxide (PO), represented by the formula: (0E). (OP) n wherein m is an integer from 1 to 40, preferably from 2 to 20, and n is an integer from 10 to 60, preferably from 20 to 50; the molar mass of these units with LCST being preferably from 500 to 300 g / mol, more preferably from 1500 to 4000 g / mol. (ii) poly N-isopropylacrylamide polymers whose molar mass is preferably from 1,000 g / mol to 500,000 g / mol, more preferably from 2,000 to 50,000 g / mol.

Preferably, the thermo-thickening polymer or polymers are chosen from thermo-thickening polyurethanes and in particular polyurethanes (1). The concentration of thermo-thickening polymer (s) in the composition (A) according to the invention preferably varies from 0.01% to 20% and better still from 0.1% to 10% relative to the total weight of the composition (A). . The composition (B) may contain at least one heat-thickening polymer in the same concentration range as for the composition (A).

Preferably, the composition (B) does not contain thermo-thickening polymers. The concentration of thermo-thickening polymer (s) in the ready-to-use composition resulting from the mixing of compositions (A) and (B) preferably varies from 0.01 to 20%, better still from 0.1% to 10%, more preferably from 0.1 to 5% relative to the total weight of said ready-to-use composition. Basifying agents: The process according to the invention also uses one or more alkalinizing agents. The basifying agent (s) may be inorganic or organic or hybrid. The inorganic alkalinizing agent (s) is (are) preferably chosen from ammonia, alkali carbonates or bicarbonates, such as sodium or potassium carbonates or bicarbonates, sodium or potassium hydroxides, or mixtures thereof. The organic basifying agent (s) are preferably chosen from organic amines whose pKb at 25 ° C. is less than 12, and preferably less than 10, and even more advantageously less than 6. It should be noted that this is pKb corresponding to the highest basicity function. In addition, the organic amines do not comprise a fatty chain, alkyl or alkenyl, comprising more than ten carbon atoms.

The organic alkalinizing agent (s) are for example chosen from alkanolamines, ethoxylated and / or oxypropylenated ethylene diamines, amino acids and compounds of the following formula (III): ## STR2 ## (III) wherein W is a divalent C1-C6 alkylene radical optionally substituted by one or more hydroxyl groups or a C1-C6 alkyl radical, and / or optionally interrupted by one or more heteroatoms such as O, or NRu; Rx, Ry, Rz, Rt, R, and the same or different, represent a hydrogen atom, a C1-C6 alkyl or C1-C6 hydroxyalkyl, C1-C6 aminoalkyl.

Examples of amines of formula (I) are 1,3-diaminopropane, 1,3-diaminopropanol, spermine and spermidine. By alkanolamine is meant an organic amine comprising a primary, secondary or tertiary amine function, and one or more linear or branched C 1 -C 8 alkyl groups carrying one or more hydroxyl radicals. In particular, the organic amines chosen from alkanolamines, such as mono-, di- or trialkanolamines, comprising one to three identical or different C 1 -C 4 hydroxyalkyl radicals, are suitable in particular for carrying out the invention. Among compounds of this type, mention may be made of monoethanolamine (MEA), diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, N-dimethylaminoethanolamine, 2-amino-2-methyl-1-propanol, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, 3-amino-1,2-propanediol, 3-dimethylamino-1,2-propanediol, tris-hydroxymethylamino-methane.

More particularly, the amino acids that can be used are of natural or synthetic origin, in their L, D, or racemic form, and comprise at least one acid function chosen more particularly from the carboxylic, sulphonic, phosphonic or phosphoric acid functions. Amino acids can be in neutral or ionic form.

As amino acids that can be used in the present invention, mention may in particular be made of aspartic acid, glutamic acid, alanine, arginine, ornithine, citrulline, asparagine, carnitine and cysteine. , glutamine, glycine, histidine, lysine, isoleucine, leucine, methionine, N-phenylalanine, proline, serine, taurine, threonine, tryptophan, tyrosine and valine. Advantageously, the amino acids are basic amino acids comprising an additional amine function optionally included in a ring or in a ureido function. Such basic amino acids are preferably chosen from those corresponding to the following formula (IV): ## STR2 ## Formula (II) in which R represents a group chosen from: ## STR2 ## -12) 3NI-12 - (CH 2) 2 NH 2; - (C 1-12) 2NHCO N 1-12; and - (CH 2) 2 NH-C-NH 2 NH The compounds corresponding to formula (IV) are histidine, lysine, arginine, ornithine, citrulline. The organic amine may also be chosen from heterocyclic organic amines. In addition to the histidine already mentioned in the amino acids, mention may be made, in particular, of pyridine, piperidine, imidazole, triazole, tetrazole and benzimidazole. The organic amine may also be selected from amino acid dipeptides.

As amino acid dipeptides that may be used in the present invention, carnosine, anserin and whale may be mentioned in particular. The organic amine may also be chosen from compounds containing a guanidine function. As amino amines of this type which can be used in the present invention, mention may in addition be made of arginine already mentioned as amino acid, creatine, creatinine, 1,1-dimethylguanidine, 1,1 diethylguanidine, glycocyamine, metformin, agmatine, n-amidinoalanine, 3-guanidinopropionic acid, 4-guanidinobutyric acid and 2 - ([amino (imino) methyl] amino) - ethane 1-sulfonic acid.

Preferably, the basifying agent present in the composition (A) of the invention is an alkanolamine. Even more preferentially, the basifying agent is monoethanolamine (MEA).

As hybrid compounds, mention may be made of the salts of the amines mentioned above with acids such as carbonic acid and hydrochloric acid. In particular, guanidine carbonate or monoethanolamine hydrochloride can be used.

Advantageously, the compositions (A) and (B) according to the invention and the ready-to-use composition have a content of basifying agent (s) ranging from 0.01 to 30% by weight, preferably from 0.1 to 20% by weight relative to the weight of the composition in question, composition (A) or the ready-to-use composition obtained from the mixture of (A) and (B). Preferably, the composition (B) does not contain an alkalinizing agent. According to a particular embodiment, the process according to the invention preferably does not use ammonia or a salt thereof, as alkalinizing agent. According to this particular mode, if however the process used it, its content would not exceed 0.03% by weight (expressed in NH 3), preferably would not exceed 0.01% by weight, relative to the weight of the composition from the mixture of (A) and (B). Preferably, if the composition (A) comprises ammonia or a salt thereof, then the amount of alkalinizing agent (s) is greater than that of ammonia (expressed as NH 3). The process according to the invention and the composition of the invention may comprise, according to a particular embodiment, at least one additional surfactant different from the solid nonionic surfactants (i). Additional surfactants are chosen from nonionic surfactants or from anionic, amphoteric, cationic or nonionic surfactants, and preferably nonionic surfactants.

The term "anionic surfactant" is understood to mean a surfactant comprising as ionic or ionizable groups only anionic groups. These anionic groups are preferably chosen from the groups -C (O) OH, -C (O) O-, -503H, -S (O) 20-, -OS (O) 20H, -OS (O) 20- , -P (O) OH2, -P (O) 20-, -P (O) O2, -P (OH) 2, = P (O) OH, -P (OH) O-, = P (O) 0-, = POH, = PO-, the anionic parts comprising a cationic counterion such as an alkali metal, an alkaline earth metal, or an ammonium. As examples of anionic surfactants that may be used in the composition according to the invention, mention may be made of alkyl sulphates, alkyl ether sulphates, alkylamido ether sulphates, alkylaryl polyether sulphates, monoglyceride sulphates, alkyl sulphonates, alkyl amide sulphonates and alkyl aryl sulphonates. , alpha-olefin sulfonates, paraffin sulfonates, alkylsulfosuccinates, alkylethersulfosuccinates, alkylamide-sulfosuccinates, alkylsulfoacetates, acylsarcosinates, acylglutamates, alkylsulfosuccinamates, acylisethionates and N-acyltaurates, monoester salts alkyl and polyglycoside-polycarboxylic acids, acyllactylates, D-galactosideuronic acid salts, alkyl ether-carboxylic acid salts, alkyl aryl ether carboxylic acid salts, alkyl acid salts amidoether carboxylic acids, and the corresponding non-salified forms of all these compounds, alkyl and acyl groups of all these compounds having from 6 to 24 carbon atoms and the aryl group denoting a phenyl group. These compounds may be oxyethylenated and then preferably comprise from 1 to 50 ethylene oxide units. The salts of C 6 -C 24 alkyl monoesters and of polyglycoside-polycarboxylic acids may be chosen from C 6 -C 24 alkyl polyglycoside citrates, C 6 -C 24 alkyl polyglycoside tartrates and polyglycoside sulfosuccinates. C6-O24 alkyl. When the agent or the anionic surfactants are in the salt form, they may be chosen from alkali metal salts such as the sodium or potassium salt and preferably sodium salt, ammonium salts, amine salts and in particular aminoalcohols or alkaline earth metal salts such as magnesium salts. By way of example of aminoalcohol salts, mention may be made in particular of the salts of mono-, di- and triethanolamine, the salts of mono-, di- or triisopropanolamine and the salts of 2-amino-2-methyl-1-one. propanol, 2-amino-2-methyl-1,3-propanediol and tris (hydroxymethyl) amino methane. The alkali metal or alkaline earth metal salts and in particular the sodium or magnesium salts are preferably used. Among the anionic surfactants mentioned, it is preferred to use (C 6 -C 24) alkyl sulphates, alkyl (C 6 -C 24) ether sulphates comprising from 2 to 50 ethylene oxide units, in particular in the form of alkali metal or ammonium salts. , aminoalcohols, and alkaline earth metals, or a mixture of these compounds. In particular, it is preferred to use (C 12 -C 20) alkyl sulphates, C 12 -C 20 alkyl ether sulphates comprising from 2 to 20 ethylene oxide units, in particular in the form of alkali metal salts, ammonium salts, aminoalcohol , and alkaline earth metals, or a mixture of these compounds. More preferably, it is preferred to use sodium lauryl ether sulfate with 2.2 moles of ethylene oxide. The amphoteric or zwitterionic surfactant (s), preferably non-silicone surfactants, which may be used in the present invention may be in particular derivatives of secondary or tertiary aliphatic amines, optionally quaternized, in which the aliphatic group is a linear or branched chain containing from 8 to 8 carbon atoms. at 22 carbon atoms, said amine derivatives containing at least one anionic group such as, for example, a carboxylate group, sulfonate, sulfate, phosphate or phosphonate. Mention may in particular be made of (C 8 -C 20) alkyl betaines, sulphobetaines, (C 8 -C 20) alkylamido (C 3 -C 8) alkyl betaines and (C 8 -C 8) alkyl (C 8 -C 8) alkylsulfobetaines.

Among the derivatives of secondary or tertiary aliphatic amines, optionally quaternized, which may be used, as defined above, there may also be mentioned the compounds of respective structures (V) and (VI): Ra-C (O) -NH-CH 2 Embedded image in which: Ra represents a C 10 -C 30 alkyl or alkenyl group derived from an acid RaC (0); OH, preferably present in hydrolyzed coconut oil, a heptyl, nonyl or undecyl group; Rb represents a beta-hydroxyethyl group; and R is a carboxymethyl group; M + represents a cationic counterion derived from an alkaline or alkaline earth metal, such as sodium, an ammonium ion or an ion derived from an organic amine, and Ra-C (O) -NH-CH 2 -CH 2 -N ( B) (131) (VI) Formula (VI) wherein: B is -CH2-CH2-O-X '; B 'represents the group - (CH2), Y', with z = 1 or 2; X 'represents the group -CH2-C (O) OH, -CH2-C (O) OZ', -CH2-CH2-C (O) OH, -CH2-CH2-C (O) OZ ', or hydrogen atom; Y 'represents the group -C (O) OH, -C (O) OZ', -CH2-CH (OH) -SO3H or the group -CH2-CH (OH) -SO3-Z '; Z 'represents a cationic counterion derived from an alkaline or alkaline earth metal, such as sodium, an ammonium ion or an ion derived from an organic amine; Ra, represents a C10-C30 alkyl or alkenyl group of an acid Ra-C (O) OH, preferably present in coconut oil or in hydrolysed linseed oil, an alkyl group, especially in 017 and its iso form, an unsaturated 017 group. These compounds are classified in the CTFA dictionary, 5th edition, 1993, under the names cocoamphodiacétate disodium, lauroamphodiacétate disodium, caprylamphodiacétate disodium, capryloamphodiacétate disodium, cocoamphodipropionate disodium, lauroamphodipropionate disodium, caprylamphodipropionate disodium, capryloamphodipropionate disodium, acid lauroamphodipropionic, cocoamphodipropionic acid. By way of example, mention may be made of cocoamphodiacetate marketed by Rhodia under the trade name MIRANOL® C2M concentrate. Among the amphoteric or zwitterionic surfactants mentioned above, use is preferably made of alkyl (C 8 -C 20) betaines such as cocobetaine, (C 8 -C 20) alkylamido (C 3 -C 8) alkyl betaines such as cocamidopropylbetaine, and their mixtures. More preferably, the amphoteric or zwitterionic surfactant (s) is (are) chosen from cocamidopropylbetaine and cocobetaine. The cationic surfactant (s) that may be used in the composition according to the invention comprise, for example, primary, secondary or tertiary fatty amine salts, optionally polyoxyalkylenated, quaternary ammonium salts, and mixtures thereof.

As quaternary ammonium salts, mention may be made, for example: - those corresponding to the following general formula (VII): - + Ro \ / Rio X R9 / R11 (VII) Formula (VII) in which the groups R8 to R11, which may be the same or different, each represents an aliphatic group, linear or branched, having from 1 to 30 carbon atoms, or an aromatic group such as aryl or alkylaryl, at least one of the groups R8 to R11 comprising 8 to 30 carbon atoms, preferably 12 to 24 carbon atoms. The aliphatic groups can comprise heteroatoms such as in particular oxygen, nitrogen, sulfur and halogens.

The aliphatic groups are, for example, chosen from C1-C30alkoxy, polyoxyalkylene (C2-06) alkyl, C1-C30 alkylamide, (C12-C22) alkylamido (C2-C6) alkyl, (C12-C22) alkylamido groups. acetate, and C1-C30 hydroxyalkyl, X- is an anionic counterion selected from halides, phosphates, acetates, lactates, (C1-C4) alkyl sulfates, (C1-C4) alkyl or (C1-C4) alkyl aryl - sulfonates. Of the quaternary ammonium salts of formula (VII), tetraalkylammonium chlorides, for example dialkyldimethylammonium or alkyltrimethylammonium chlorides in which the alkyl group comprises from about 12 to 22 carbon atoms, are preferred. carbon, in particular behenyltrimethylammonium, distearyldimethylammonium, cetyltrimethylammonium, benzyldimethylstearylammonium chlorides or secondly distearoylethylhydroxyethylmethylammonium methosulphate, dipalmitoylethylhydroxyethylammonium methosulphate or distearoylethylhydroxyethylammonium methosulphate, or else finally palmitylamidopropyltrimethylammonium chloride or stearamidopropyldimethyl (myristyl acetate) ammonium chloride sold under the name CERAPHYL® 70 by VAN DYK; the quaternary ammonium salts of imidazoline, for example those of the following formula (VIII): R 13 CH 2 CH 2 N (R 15) -CO-R 12 N NR 14 (VIII) Formula (VIII) in which R 12 represents an alkenyl or alkyl group having from 8 to 30 carbon atoms, for example fatty acid derivatives of tallow, R13 represents a hydrogen atom, a C1-C4 alkyl group or an alkenyl or alkyl group having from 8 to 30 carbon atoms, R14 represents a C1-C4 alkyl group, R15 represents a hydrogen atom, a C1-C4 alkyl group, X- represents an anionic counterion chosen from halides, phosphates, acetates, lactates, (C1-C4) alkyl sulphates, alkyl (C 1 -C 4) - or (C 1 -C 4) alkylarylsulfonates. Preferably, R12 and R13 denote a mixture of alkenyl or alkyl groups containing from 12 to 21 carbon atoms, for example fatty acid derivatives of tallow, R14 denotes a methyl group, R15 denotes a hydrogen atom. Such a product is for example marketed under the name REWOQUAT® W 75 by the company REVVO; the quaternary di- or triammonium salts, in particular of formula (IX) below: R17 R19 R16-N- (C1-12) N-R21 R18 R20 (IX) Formula (IX) in which R16 denotes an alkyl group comprising about 16 to 30 carbon atoms, optionally hydroxylated and / or interrupted by one or more oxygen atoms; R17 is selected from hydrogen, an alkyl group having 1 to 4 carbon atoms or a group X 2+ 2X- - (CH2) 3-N + (R16a) (R17a) (R18a) R16a, R17a, R18a, R18, R19, R20 and R21, which are identical or different, are chosen from hydrogen and an alkyl group containing from 1 to 4 carbon atoms, and X- represents an anionic counterion chosen from halides, acetates, phosphates and nitrates, alkyl (C1-C4) sulphates, alkyl (C1-C4) - or (C1-C4) alkyl aryl sulphonates, especially methyl sulphate and ethyl sulphate. Such compounds are, for example, Finquat CT-P proposed by Finetex (Quaternium 89), Finquat CT proposed by Finetex (Quaternium 75), and quaternary ammonium salts containing one or more ester functions, such as those of the following formula (X): R24 (X) Formula (X) in which: R22 is selected from C1-C6 alkyl and hydroxyalkyl or C1-C6 dihydroxyalkyl; R23 is selected from: X (CsH2s) R25 O-CrHr2 (OH) R ± N + CtHt2 (OH) O ± R23 Y R22 3 - the group R26 (11 - R27 hydrocarbon groups in saturated or unsaturated groups, - the hydrogen atom, R 25 is chosen from: OII - the group R2c - linear or branched, - linear or branched, saturated or unsaturated C 1 -C 6 hydrocarbon groups R 29, R 24, R 26 and R 28, which are identical or different from one another; different, are selected from linear or branched, saturated or unsaturated hydrocarbon groups of 07-021; r, s and t, which are identical or different , are integers of 2 to 6, - ri and t1 identical or different, equal to 0 or 1 with r2 + r1 = 2r and t1 + t2 = 2t - y is an integer of 1 to 10, - x and z, identical or different, are integers ranging from 0 to 10, - X- represents an anionic counterion, organic or inorganic, provided that the sum x + y + z is from 1 to 15, that when x is 0, then R23 denotes R27 and that when z is 0 then R25 is R29.

The alkyl groups R22 may be linear or branched, and more particularly linear. Preferably, R 22 denotes a methyl, ethyl, hydroxyethyl or dihydroxypropyl group, and more particularly a methyl or ethyl group.

Advantageously, the sum x + y + z is from 1 to 10. When R 23 is a hydrocarbon R 27 group, it may be long and have 12 to 22 carbon atoms, or short and have from 1 to 3 carbon atoms. When R 25 is a hydrocarbon R 29 group, it preferably has 1 to 3 carbon atoms.

Advantageously, R24, R26 and R28, which are identical or different, are chosen from linear or branched, saturated or unsaturated Cil-021 hydrocarbon groups, and more particularly from linear or branched, saturated Cil-021 alkyl and alkenyl groups. or unsaturated. Preferably, x and z, identical or different, are 0 or 1.

Advantageously, y is equal to 1. Preferably, r, s and t, identical or different, are 2 or 3, and even more particularly are equal to 2. The anionic counterion X- is preferably a halide, preferably chloride , bromide or iodide, (C1-C4) alkyl sulphate, (C1-C4) alkyl or (C1-C4) alkyl aryl sulphonate. However, it is possible to use methanesulphonate, phosphate, nitrate, tosylate, an anion derived from an organic acid such as acetate or lactate or any other anion compatible with ammonium with an ester function. The anionic counterion X- is even more particularly chloride, methylsulfate or ethylsulfate. In the composition according to the invention, the ammonium salts of formula (X) are used more particularly in which: R 22 denotes 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, - R 23 is chosen from: O - the group R 26 C, - methyl, ethyl or C 14 -C 22 hydrocarbon groups, - the hydrogen atom, - R 25 is chosen from: O - the group R 2 C - the hydrogen atom, R 24, R 26 and R 28, which are identical or different, are chosen from linear or branched, saturated or unsaturated C 13 -C 17 hydrocarbon-based groups, and preferably from linear or branched, saturated or unsaturated C13-C17 alkyl and alkenyl groups. Advantageously, the hydrocarbon radicals are linear. Examples of compounds of formula (X) include salts, especially diacyloxyethyldimethylammonium chloride, diacyloxyethylhydroxyethylmethylammonium chloride, monoacyloxyethyldihydroxyethylmethylammonium chloride, triacyloxyethylmethylammonium chloride, monoacyloxyethylhydroxyethyldimethylammonium chloride, and mixtures thereof. The acyl groups preferably have from 14 to 18 carbon atoms and come more particularly from a vegetable oil such as palm oil or sunflower oil. When the compound contains more than one acyl group, the latter groups may be identical or different. These products are obtained, for example, by direct esterification of triethanolamine, triisopropanolamine, alkyldiethanolamine or alkyldiisopropanolamine optionally oxyalkylenated on fatty acids or mixtures of fatty acids of plant or animal origin, or by transesterification. of their methyl esters. This esterification is followed by quaternization using an alkylating agent such as an alkyl halide, preferably methyl or ethyl, a dialkyl sulphate, preferably methyl or ethyl sulphate. methyl methanesulfonate, methyl para-toluenesulfonate, glycol or glycerol chlorohydrin.

Such compounds are, for example, sold under the names DEHYQUART® by the company HENKEL, STEPANQUAT® by the company STEPAN, NOXAMIUM® by the company CECA, REWOQUAT® VVE 18 by the company REWOWITCO. The composition according to the invention may contain, for example, a mixture of quaternary ammonium mono-, di- and triester salts with a majority by weight of diester salts. It is also possible to use the ammonium salts containing at least one ester function described in US-A-4874554 and US-A-4137180. Behenoylhydroxypropyltrimethylammonium chloride proposed by KAO can be used under the name Quatarmin BTC 131. Preferably, the ammonium salts containing at least one ester function contain two ester functions.

Among the cationic surfactants that may be present in the composition according to the invention, it is more particularly preferred to choose the salts of cetyltrimethylammonium, behenyltrimethylammonium, dipalmitoylethylhydroxyethylmethylammonium, and mixtures thereof, and more particularly behenyltrimethylammonium chloride, cetyltrimethylammonium chloride, dipalmitoylethylhydroxyethylammonium methosulfate, and mixtures thereof. Examples of nonionic surfactants which can be used in the composition used according to the invention and which are different from the surfactants (i) are, in particular, the nonionic surfactants of HLB greater than 10 described, for example, in "Handbook of Surfactants" by R. PORTER, Blackie & Son editions (Glasgow and London), 1991, pp 116-178. They are chosen in particular from alcohols, alpha-diols and (C1-C20) alkyl phenols, these compounds being polyethoxylated, polypropoxylated and / or polyglycerolated, and having at least one fatty chain comprising, for example, from 8 to 18 atoms. carbon number, the number of ethylene oxide groups and / or propylene oxide ranging in particular from 6 to 50 and the number of glycerol groups ranging in particular from 2 to 30. Mention may also be made of ethylene oxide copolymers and propylene, optionally oxyethylenated fatty acid and sorbitan esters, sucrose fatty acid esters, polyoxyalkylenated fatty acid esters, optionally oxyalkylenated alkylpolyglycosides, alkylglucoside esters, N-derivatives and the like. alkylglucamine and N-acyl-methylglucamine, aldobionamides and amine oxides.

The nonionic surfactants are more particularly chosen from polyoxyalkylenated, polyglycerolated nonionic surfactants. The oxyalkylenated units are more particularly oxyethylenated units, oxypropylene, or their combination, preferably oxyethylenated.

As examples of oxyalkylenated nonionic surfactants, mention may be made of: oxyalkylenated (C 8 -C 24) alkyl phenols; saturated or unsaturated, linear or branched, oxyalkylenated C 8 -C 30 alcohols; saturated or unsaturated, linear or branched, oxyalkylenated C 8 -C 30 amides; saturated or unsaturated, linear or branched, C 8 -C 30 acid esters of polyethylene glycols; saturated or unsaturated, linear or branched C 8 -C 30 acid esters of polyoxyethylenated sorbitol; vegetable oils oxyethylenated, saturated or not; condensates of ethylene oxide and / or propylene oxide, among others, alone or in mixtures. the optionally oxyalkylenated alkylpolyglycosides; oxyethylenated silicones, optionally oxypropylenated silicones. Surfactants having a number of moles of ethylene oxide and / or propylene of between 1 and 100, preferably between 2 and 50, preferably between 2 and 30. Advantageously, the nonionic surfactants do not comprise oxypropylene units. According to a preferred embodiment of the invention, the additional oxyalkylenated nonionic surfactants are chosen from oxyethylenated C 8 -C 30 alcohols comprising from 6 to 100 moles of ethylene oxide; linear or branched, saturated or unsaturated C8-C30 acid esters, and polyoxyethylenated sorbitol esters comprising from 1 to 100 moles of ethylene oxide. As an example of non-ionic polyglycerolated surfactants, the C 8 -C 40 alcohols, mono- or polyglycerolated, are preferably used. In particular, the C.sub.6 -C.sub.6 poly (glycerol) alcohols correspond to the following formula: R.sub.290- [CH.sub.2 -CH (CH.sub.2 OH) -O] .sub.H, in which R.sub.2 represents a linear or branched C.sub.1 -C.sub.6 alkyl or alkenyl radical, C 40, preferably C 8 -C 30, and m represents a number ranging from 4 to 30 and preferably from 4 to 10. By way of example of compounds which are suitable in the context of the invention, mention may be made of alcohol 4 moles of glycerol lauric acid (INCI name: POLYGLYCERYL-4 LAURYL ETHER), oleic alcohol with 4 moles of glycerol (INCI name: POLYGLYCERYL-4 OLEYL ETHER), cetearyl alcohol with 6 moles of glycerol, alcohol oleocetyl with 6 moles of glycerol, and octadecanol with 6 moles of glycerol. The alcohol may represent a mixture of alcohols in the same way that the value of m represents a statistical value, which means that in a commercial product several species of polyglycerolated fatty alcohols may coexist as a mixture. Preferably, the additional surfactant used in the process of the invention is a nonionic surfactant of HLB greater than 10 comprising polyoxyalkylene units, particularly oxyethylenated units, oxypropylene, or their combination, more particularly oxyethylenated. Non-limiting examples of HLB surfactants greater than or equal to 10 are in particular given in Mc Cutcheon's Emulsifiers & Detergents, 1998 International Edition, MC Publishing Company, chapter HLB 40 Index. As commercial compounds, mention may be made of: Cremophor A6 Genapol 0-080 Genapol T-080 Kotilent 0/3 Lutensol AP 7 Tween 85 Tebecid S8 Berol 047 Soprophor 860P Dobanol 45-7 Prox-onic HR-030 Ethonic 1214-6 , 5 Prox-onic OA-1/09 Cremophor S9 Imbentin AG / 128/080 Serdox NOG 440 Softanol 70 Reflex 707 Simulsol 830 NP Brij 76 Tebenal T10 Volpo S-10 Eumulgin 010 Berol 199 Triton N-87 Polychol 15 Brij 56 Simulsol 56 Cremophor A11 Eumulgin 286 Genapol T-110 Sandoxylate FOL12 Bio soft HR 40 Berol 046 Eumulgin B1 Dobanol 45-11 Aqualose W20 Ethylan DP Mergital 0012 Simulsol 1230 NP Tagat R1 Tagat 12 (BASF) (HOECHST) (HOECHST) (KOLB) (BASF) (IBI) (BOHME) (BEROL NOBEL) (RHONE POULENC) (SHELL) (PROTEX) (ETHYL) (PROTEX) (BASF) (KOLB) (SERVO) (BP CHEMICALS) (HERE) (SEPPIC) (HERE) (BOHME) ) (CRODA) (HENKEL) (BEROL NOBEL) (ROHM AND HAAS) (CRODA) (HERE) (SEPPIC) (BASF) (HENKEL) (HOECHST) (SANDOZ) (STEPAN) (BEROL NOBEL) (HENKEL) (SHELL) (WESTBROCK LANOLIN) (HARCROS) (HENKEL) (SEPPIC) (GOLDSCHMIDT) (GOLDSCHMI) DT) Tebecid RM20 Imbentin AG / 168/150 Prox-onic LA-1/012 Etocas 60 Radiasurf 7157 Genapol T-180 Montanox 80 Serdox NJAD 20 Tagat R60 Berol 278 Brij 78 Simulsol 98 Montanox 40 Brij 58 Aqualose L75 Atlas G-1471 Berol 281 Berol 292 Nafolox 20-22 300E Genapol C-200 Myrj 51 Simulsol PS 20 Tergitol 15 S 20 Synperonic PE P75 Montanox 20 Myrjj 52 Simulsol 3030 NP Imbentin AG / 168/400 Rhodia Surf NP40 Incropol CS-50 Servirox OEG 90/50 Prox -onic HR-0200 Berol 243 Imbentin N / 600 Antarox CO 980 Antarox CO 987 Berol 08 Brij 700 Prox-onic NP-0100 Rs-55-100 Imbentin AG / 168S / 950 Synperonic PE F87 (BOHME) (KOLB) (PROTEX) (CRODA) (OLEOFINA) (HOECHST) (SEPPIC) (SERVO) (GOLDSCHMIDT) (BEROL NOBEL) (HERE) (SEPPIC) (SEPPIC) (HERE) (WESTBROCK LANOLIN) (HERE) (BEROL NOBEL) (BEROL NOBEL) ( CONDEA) (HOECHST) (ICI) (SEPPIC) (CARBIDE UNION) (ICI) (SEPPIC) (ICI) (SEPPIC) (KOLB) (RHONE POULENC) (CRODA) (SERVO) (PROTEX) (BEROL NOBEL) (KOLB) (RHONE POULENC) (RHONE POULENC) (BEROL NOBEL) (ICI) (PROTEX) (HEFTI) (KOLB) (IC I) Alkasurf BA-PE80 (RHONE POULENC) Synperonic PE F38 (ICI) In the composition (A) and in the ready-to-use composition, the amount of the additional surfactant (s) in the composition preferably varies from 0.1 to 30% by weight, more preferably from 0.2 to 20% by weight, relative to the total weight of the composition in question (composition (A) or ready-to-use composition). The composition (B) may or may not comprise at least one surfactant. If it contains surfactants, their total content may vary from 0.1 to 30% by weight, more preferably from 0.2 to 20% by weight, relative to to the total weight of the composition (B). The additional solid fatty alcohol According to one particular embodiment of the invention, the emulsion (A) may contain at least one solid fatty alcohol at ambient temperature and at atmospheric pressure. By "fatty alcohol" is meant a long-chain aliphatic alcohol comprising from 6 to 34 carbon atoms, and comprising at least one OH hydroxyl group. These fatty alcohols are neither oxyalkylenated nor glycerolated. Preferably the solid fatty alcohols are of R-OH structure with R a linear alkyl group comprising from 12 to 34 carbon atoms. The fatty alcohols solid at room temperature suitable for the implementation of the invention are more particularly chosen from: lauric alcohol, (1 dodecanol); - myristic alcohol, (1-tetradecanol); cetyl alcohol, (1-hexadecanol); stearyl alcohol, (1-octadecanol); arachidyl alcohol, (1-eicosanol); - behenyl alcohol, (1-docosanol); - lignoceryl alcohol, (1-tetracosanol); - Ceryl alcohol, (1-hexacosanol); - montanyl alcohol, (1-octacosanol); - myricylic alcohol, (1-triacontanol); and their mixtures. According to one particular embodiment of the invention, the solid fatty alcohols of structure R-OH are such that R as defined above has from 12 to 30 carbon atoms, better still from 12 to 22. Still more particularly, the solid fatty alcohols are chosen from cetyl alcohol, stearyl alcohol, behenyl alcohol and mixtures thereof such as cetylstearyl or cetearyl alcohol.

The content of solid fatty alcohols at ambient temperature and atmospheric pressure in the composition (A) according to the invention is preferably between 0.2 and 20% by weight, preferably from 0.5 to 15% by weight. and even more particularly from 1 to 10% by weight relative to the total weight of the composition (A).

The composition (B) may further contain one or more solid fatty alcohols. If it contains one or more solid fatty alcohols, their content may vary from 0.2 to 20% by weight, preferably from 0.5 to 15% by weight, and even more particularly from 1 to 10% by weight relative to the weight. total of the composition (B).

Preferably, the content of solid fatty alcohols at room temperature and atmospheric pressure in the ready-to-use composition according to the invention ranges from 0.2 to 20% by weight, preferably from 0.5 to 15% by weight. and even more particularly from 1 to 10% by weight relative to the total weight of the composition (A). (y) - The dyes: The process according to the invention may optionally use one or more dyes chosen from a) oxidation dyes, b) direct dyes or their mixtures of a) and b) which will be detailed herein. -Dessous.

When the process according to the invention is intended for dyeing keratin fibers, the composition (A) comprises one or more dyes and preferably a) at least one oxidation dye. The oxidation dyes are generally chosen from one or more oxidation bases optionally combined with one or more couplers.

By way of example, the oxidation bases are chosen from para-phenylenediamines, bis-phenylalkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases and their addition salts. Among the para-phenylenediamines, there may be mentioned, for example, para-phenylenediamine, paratoluylenediamine, 2-chloro-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine, 2,6-diethyl paraphenylenediamine, 2,5-dimethyl paraphenylenediamine, N, N-dimethyl paraphenylenediamine, N, N-diethyl paraphenylenediamine, N, Ndipropyl para-phenylenediamine, 4-amino N, N-diethyl-3-methylaniline, N, N-bis ((3 hydroxy-para-phenylenediamine, 4-N, N-bis - ((3-hydroxyethyl) amino-2-methylaniline, 4-N, N-bis - ((3-hydroxyethyl) amino 2-chloroaniline, 2 ( 3-hydroxyethyl paraphenylenediamine, 2-fluoro-para-phenylenediamine, 2-isopropyl-para-phenylenediamine, N - ((3-hydroxypropyl) para-phenylenediamine, 2-hydroxymethyl-para-phenylenediamine, N, N-dimethyl-3-methyl-para-phenylenediamine, N, N- (ethyl, 3-hydroxyethyl) paraphenylenediamine, N- (13, γ-dihydroxypropyl) by aphenylenediamine, N- (4'-aminophenyl) paraphenylenediamine, N-phenyl paraphenylenediamine, 2 (3-hydroxyethyloxy) paraphenylenediamine, 2 (3-acetylaminoethyloxy) paraphenylenediamine, N - ((3-methoxyethyl) paraphenylenediamine, 4-aminophenylpyrrolidine, 2-thienyl paraphenylenediamine, hydroxyethylamino 5-amino toluene, 3-hydroxy-1- (4'-aminophenyl) pyrrolidine and their addition salts with an acid. Among the paraphenylenediamines mentioned above, paraphenylenediamine, paratoluylenediamine, 2-isopropyl paraphenylenediamine, 2 (3-hydroxyethyl paraphenylenediamine, 2 (3-hydroxyethyloxy) paraphenylenediamine, 2,6-dimethyl paraphenylenediamine, 2,6 ethyl paraphenylenediamine, 2,3-dimethyl paraphenylenediamine, N, N-bis - ((3-hydroxyethyl) paraphenylenediamine, 2-chloro-para-phenylenediamine, 2 (3-acetylaminoethyloxy) para-phenylenediamine, and their acid addition salts Particularly preferred bis-phenylalkylenediamines include, for example, N, N'-bis- ((3-hydroxyethyl) N, N'-bis (4'-aminophenyl) -1,3- diamino propanol, N, N'-bis - ((3hydroxyethyl) N, N'-bis (4'-aminophenyl) ethylenediamine, N, N'-bis (4-aminophenyl) tetramethylenediamine, N, N ' bis ((3-hydroxyethyl) N, N'-bis- (4-aminophenyl) tetramethylenediamine, N, N'-bis- (4-methylaminophenyl) tetramethyl ènediamine, N, N'-bis (ethyl) N, N'-bis (4'-amino, 3'-methylphenyl) ethylenediamine, 1,8-bis (2,5-diamino phenoxy) -3 , 6-dioxaoctane, and their addition salts. Among para-aminophenols, para-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluoro phenol, 4-amino-3-chlorophenol, 4-amino-3 are exemplified. -hydroxymethyl phenol, 4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol, 4-amino-2 - ((3- hydroxyethyl aminomethyl) phenol, 4-amino-2-fluoro phenol, and their addition salts with an acid Among the ortho-aminophenols, there may be mentioned by way of example, 2-amino phenol, 2-amino 3-methylphenol, 2-amino-6-methylphenol, 5-acetamido-2-amino phenol, and their addition salts Amongst the heterocyclic bases, mention may be made, by way of example, of pyridine derivatives and pyrimidine derivatives and the pyrazole derivatives Among the pyridine derivatives, mention may be made of the compounds described for example in patents GB 1 026 978 and GB 1 153 196, such as 2,5-diaminopyridine, 2- (4-methoxyphenyl) amino-3-amino pyridine, 3,4-diamino pyridine, and their addition salts. Other pyridinic oxidation bases useful in the present invention are the 3-amino pyrazolo [1,5-a] pyridines oxidation bases or their addition salts described for example in the patent application FR 2801308. By way of example, mention may be made of pyrazolo [1,5-a] pyridin-3-ylamine; 2-acetylamino pyrazolo [1,5-a] pyridin-3-ylamine; 2-morpholin-4-yl-pyrazolo [1,5-a] pyridin-3-ylamine; 3-amino-pyrazolo [1,5-a] pyridin-2-carboxylic acid; 2-methoxy-pyrazolo [1,5-a] pyridin-3-ylamino; (3-amino-pyrazolo [1,5-a] pyridin-7-yl) -methanol; 2- (3-aminopyrazolo [1,5-a] pyridin-5-yl) ethanol; 2- (3-Amino-pyrazolo [1,5-a] pyridin-7-yl) -ethanol; (3-Amino-pyrazolo [1,5-a] pyridin-2-yl) -methanol; 3,6-diaminopyrazolo [1,5-a] pyridine; 3,4-diamino-pyrazolo [1,5-a] pyridine; pyrazolo [1,5-a] pyridine-3,7-diamine; 7-morpholin-4-yl-pyrazolo [1,5-a] pyridin-3-ylamine; pyrazolo [1,5-a] pyridine-3,5-diamine; 5-morpholin-4-yl-pyrazolo [1,5-a] pyridin-3-ylamine; 2 - [(3-amino-pyrazolo [1,5-a] pyridin-5-yl) - (2-hydroxyethyl) amino] ethanol; 2 - [(3-amino-pyrazolo [1,5-a] pyridin-7-yl) - (2-hydroxyethyl) amino] ethanol; 3-amino-pyrazolo [1,5-a] pyridin-5-ol; 3-amino-pyrazolo [1,5-a] pyridin-4-ol; 3-amino-pyrazolo [1,5-a] pyridin-6-ol; 3-amino-pyrazolo [1,5-a] pyridin-7-ol; as well as their addition salts. Among the pyrimidine derivatives, mention may be made of the compounds described, for example, in DE 2359399; JP 88-169571; JP 05-63124; EP 0770375 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, , 4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triaminopyrimidine and their addition salts and tautomeric forms, when tautomeric equilibrium exists. Among the pyrazole derivatives, mention may be made of the compounds described in DE 3843892, DE 4133957 and patent applications WO 94/08969, WO 94/08970, FR-A-2 733 749 and DE 195 43 988 as the 4.5 1-methyl pyrazole, 4,5-diamino-1 - ((3-hydroxyethyl) pyrazole, 3,4-diamino pyrazole, 4,5-diamino-1- (4'-chlorobenzyl) pyrazole, diamino 1,3-dimethyl pyrazole, 4,5-diamino-3-methyl-1-phenyl pyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, 4-amino-1,3-dimethyl-5-hydrazino pyrazole, 1-Benzyl-4,5-diamino-3-methyl-pyrazole, 4,5-diamino-3-tert-butyl-1-methyl-pyrazole, 4,5-diamino-1-tert-butyl-3-methyl-pyrazole, 4,5 -diamino 1 - ((3-hydroxyethyl) 3-methyl pyrazole, 4,5-diamino-1-ethyl-3-methyl-pyrazole, 4,5-diamino-1-ethyl-3- (4'-methoxyphenyl) pyrazole, 5-diamino-1-ethyl-3-hydroxymethyl pyrazole, 4,5-diamino-3-hydroxymethyl-1-methyl-pyrazole, 4,5-diamino-3-hydroxymethyl-1-isopropyl pyrazole, 4,5-diamino-3-meth 1-isopropyl pyrazole, 4-amino 5- (2'-aminoethyl) amino 1,3-dimethyl pyrazole, 3,4,5-triamino pyrazole, 1-methyl 3,4,5-triamino pyrazole, 3,5-diamino-1-methyl-4-methylamino pyrazole, 3,5-diamino 4 - ((3-hydroxyethyl) amino-1-methyl pyrazole, and their addition salts. 4-5-Diamino-1 - ((3-methoxyethyl) pyrazole may also be used, preferably a 4,5-diaminopyrazole and even more preferably 4,5-diamino-1 - ((3-hydroxyethyl) and pyrazole derivatives, mention may also be made of diamino N, Ndihydropyrazolopyrazolones and in particular those described in Application FR-A-2,886,136, such as the following compounds and their salts; addition: 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-aminomo-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-Dihydro-pyrazol-3-one, 4,5-diamino-1,2-diethyl-1,2-dihydro-pyrazol-3-one, 4,5-diamino-1,2-di- (2-hydroxyethyl) -1,2-dihydro-pyrazol-3-one, 2-amino-3- (2-hydroxyethyl) amino-6,7-dihydro-1H, 5H-pyrazolo [1,2-a] pyrazol-1-one , 2-amino-3 1-methylamino-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-aminodo-1,2-diethyl-5- (pyrrolidin-1-yl) -1,2-dihydro-pyrazol-3-one, 4-amino-5 (3-Dimethylamino-pyrrolidin-1-yl) -1,2-diethyl-1,2-dihydro-pyrazol-3-one, 2,3-diamino-6-hydroxy-6,7-dihydro-1H, 5H pyrazolo [1,2-a] pyrazol-1-one. It will be preferred to use 2,3-diamino-6,7-dihydro-1H, 5H-pyrazolo [1,2-a] pyrazol-1-one and / or a salt thereof. As heterocyclic bases, 4,5-diamino-1 - ((3-hydroxyethyl) pyrazole and / or 2,3-diamino-6,7-dihydro-1H, 5H-pyrazolo [1,2-a] are preferably used. ] pyrazol-1-one and / or a salt thereof The composition (A) according to the invention may optionally comprise one or more couplers advantageously chosen from those conventionally used for dyeing keratinous fibers.

Among these couplers, there may be mentioned meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalenic couplers, heterocyclic couplers and their addition salts. By way of example, mention may be made of 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene and 2,4-diamino-1- (G hydroxyethyloxy) benzene, 2-amino 4- (G-hydroxyethylamino) 1-methoxybenzene, 1,3-diamino benzene, 1,3-bis (2,4-diaminophenoxy) propane, 3-ureido aniline, 3-ureido 1-dimethylamino benzene, sesamol, 1-G-hydroxyethylamino-3,4-methylenedioxybenzene, α-naphthol, 2-methyl-1-naphthol, 6-hydroxyindole, 4hydroxyindole, 4 N-methyl-indole, 2-amino-3-hydroxy-pyridine, 6-hydroxybenzomorpholine, 3,5-diamino-2,6-dimethoxypyridine, 1-N- (11-hydroxyethyl) amino-3,4-hydroxy ethylene dioxybenzene, 2,6-bis- (11-hydroxyethylamino) toluene, 6-hydroxy indoline, 2,6-dihydroxy-4-methyl pyridine, 1-H 3 -methyl pyrazole 5-one, phenyl 3-methyl pyrazole 5-one, 2,6-dimethyl pyrazolo [1,5-b] -1,2,4-triazole, 2,6-dimethyl [3,2-c] -1,2, 4-triazole, 6-methyl pyrazolo [1,5-a] benzimidazole, their addition salts with an acid, and mixtures thereof. In general, the addition salts of the oxidation bases and couplers that can be used in the context of the invention are chosen especially from the addition salts with an acid such as hydrochlorides, hydrobromides, sulphates, citrates, succinates, tartrates, lactates, tosylates, benzenesulfonates, phosphates and acetates.

The oxidation base or bases are each advantageously from 0.001 to 10% by weight relative to the total weight of the composition, and preferably from 0.005 to 5% by weight relative to the total weight of the composition (A) and the ready-to-use composition. The content of the coupler (s), if they are (are) present, are each advantageously from 0.001 to 10% by weight relative to the total weight of the composition, and preferably from 0.005 to 5% by weight relative to the total weight of the composition (A) and the ready-to-use composition. .

The composition (A) according to the invention may optionally comprise b) one or more direct dyes, synthetic or natural, chosen from ionic or nonionic species, preferably cationic or nonionic, either as sole dyes or in addition to the or oxidation dyes.

As examples of suitable direct dyes, mention may be made of azo direct dyes; (poly) methine dyes such as cyanines, hemicyanins, and styryls; carbonyls; azinic; nitro (hetero) aryl; tri (hetero) aryl methanes; porphyrins; phthalocyanines and natural direct dyes, alone or in mixtures.

Among the natural direct dyes that may be used according to the invention, lawsone, juglone, alizarin, purpurine, carminic acid, kermesic acid, purpurogalline, protocatechaldehyde, indigo, isatin , curcumin, spinulosin, apigenidine, orceins. It is also possible to use the extracts or decoctions containing these natural dyes, and in particular poultices or extracts made from henna. When present, the direct dye or dyes more particularly represent from 0.001 to 10% by weight of the total weight of the composition, and preferably from 0.005 to 5% by weight.

According to a preferred embodiment of the invention, the process is a staining process and the composition (A) as the ready-to-use composition contain at least one dye and preferably at least one oxidation dye as defined previously.

Compositions (A) and (B) and the ready-to-use composition may also contain additional ingredients. The different fatty substances of the oils and solid fatty alcohols The compositions (A), (B) and the ready-to-use composition may also contain additional fatty substances different from the solid fatty alcohols and oils mentioned above.

The additional fatty substance (s) used in the compositions according to the invention may also be non-oily fatty substances at room temperature (25 ° C.) and at atmospheric pressure (760 mmHg, ie 1.013 × 10 5 Pa). By "non-oily" is preferably meant a solid compound or a compound having a viscosity greater than 2 Pa.s at the temperature of 25 ° C and a shear rate of 1 s-1. More particularly, non-oily fatty substances other than solid fatty alcohols are chosen from synthetic esters of fatty acids and / or fatty alcohols, natural waxes, silicone waxes, fatty amides and non-oily fatty ethers. and preferably solid.

As regards the synthetic esters of fatty acids and / or non-oily fatty alcohols, mention may in particular be made of solid esters derived from C 8 -C 26 fatty acids and from C 8 -C 20 fatty alcohols. Among these esters, mention may be made of octyldodecyl behenate, isoketyl behenate, cetyl lactate, stearyl octanoate, octyl octanoate, cetyl octanoate, decyl oleate, myristyl stearate, octyl palmitate, octyl pelargonate, octyl stearate, alkyl myristates such as cetyl, mirystyl or stearyl myristate, and hexyl stearate. The natural wax or waxes are chosen in particular from carnauba wax, candelilla wax, alfa wax, paraffin wax, ozokerite, vegetable waxes such as olive wax, rice wax, hydrogenated jojoba wax or the absolute waxes of flowers such as the essential wax of blackcurrant sold by the company BERTIN (France), animal waxes such as beeswax, or modified beeswax (cerabellina). As solid fatty amides include ceramides. Ceramides or ceramide analogues, such as the glycoceramides which can be used in the compositions according to the invention, are known per se and are natural or synthetic molecules which can correspond to the following general formula (XI): OH R33 O-R32 Nil 0 R31 (XI) Formula (XI) in which: R31 denotes an alkyl radical, linear or branched, saturated or unsaturated, derived from 0-14-030 fatty acids, this radical may be substituted by a hydroxyl group in position alpha, or an omega-hydroxyl group esterified with a saturated or unsaturated fatty acid at 016-030; - R32 denotes a hydrogen atom or a radical (glycosyl) n, (galactosyl) m or sulphogalactosyl, in which n is an integer ranging from 1 to 4 and m is an integer ranging from 1 to 8; R33 denotes a C15-α26 hydrocarbon radical which is saturated or unsaturated in the alpha position, this radical possibly being substituted by one or more C1-C14 alkyl radicals; it being understood that, in the case of natural ceramides or glycoceramides, R 3 can also denote a C 15 -C 26 alpha-hydroxyalkyl radical, the hydroxyl group optionally being esterified with an α-hydroxyacid at 016-030. Preferred ceramides in the context of the present invention are those described by DOWNING in Arch. Dermatol, Vol. 123, 1381-1384, 1987, or those described in French patent FR 2,673,179. The most preferred ceramides or ceramides according to the invention are the compounds for which R31 denotes a saturated or unsaturated alkyl derived from 0-16 fatty acids. -022; R32 denotes a hydrogen atom; and R33 denotes a linear radical saturated with O15. Such compounds are for example: N-linoleoyldihydrosphingosine, N-oleoyldihydrosphingosine, N-palmitoyldihydrosphingosine, N-stearoyldihydrosphingosine, N-behenoyldihydrosphingosine, or mixtures thereof. of these compounds. Even more preferentially, the ceramides for which R31 denotes a saturated or unsaturated alkyl radical derived from fatty acids are used; R32 is a galactosyl or sulfogalactosyl radical; and R33 denotes a -CH = CH- (CH2) 12-CH3 group. Other waxes or waxy raw materials which can be used according to the invention are especially marine waxes such as those sold by SOPHIM under the reference M82, polyethylene waxes or polyolefin waxes in general, and waxes or resins of organopolysiloxanes. The organopolysiloxane resins that can be used in accordance with the invention are crosslinked siloxane systems containing the units: R 2 SiO 2/2, R 351 01/2, R 5 TiO 3/2 and SiO 4 12 in which R represents an alkyl having 1 to 16 carbon atoms. Among these products, those which are particularly preferred are those in which R denotes a C1-C4 lower alkyl group, more particularly methyl.

Among these resins may be mentioned the product sold under the name "Dow Corning 593" or those sold under the names "Silicone Fluid SS 4230 and SS 4267" by the company General Electric and which are silicones of dimethyl / trimethyl siloxane structure.

Mention may also be made of the trimethylsiloxysilicate type resins sold in particular under the names X22-4914, X21-5034 and X215037 by the company Shin-Etsu. Non-oil fatty ethers are chosen from dialkyl ethers and in particular dicetyl ether and distearyl ether, alone or as a mixture. Preferably, the non-oily fatty substance (s) different from the solid fatty alcohols are present in the compositions (A) and (B) or in the ready-to-use composition in a content ranging from 0 to 30%. the oxidizing agents: The oxidizing composition (B) 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. The composition (B) may also comprise one or more organic solvents chosen from those listed previously; the latter more particularly, when present, from 1 to 40% by weight relative to the weight of the oxidizing composition, and preferably from 5 to 30% by weight.

The oxidizing composition also preferably comprises one or more acidifying agents. Among the acidifying agents, mention may be made, for example, of mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, tartaric acid citric acid, lactic acid, sulphonic acids.

Usually, the pH of the oxidizing composition, when it is aqueous, is less than 7. The composition (B) according to the invention comprises one or more oxidizing agents. More particularly, the oxidizing agent (s) is (are) chosen from hydrogen peroxide, urea peroxide, alkali metal bromates or ferricyanides, peroxygenated salts, for example alkali metal or alkaline persulfates, perborates and percarbonates; -terrous, and peracids and their precursors. Preferably, the oxidizing agent is not chosen from peroxygenated salts. Advantageously, the oxidizing agent is hydrogen peroxide.

Preferably, the oxidizing composition (B) comprises hydrogen peroxide as an 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 even more preferably between 1 and 15% by weight relative to the weight of the oxidizing composition. The Other Adjuvants The compositions (A) and / or (B) and of the ready-to-use composition of the process of the invention may also contain various adjuvants conventionally used in compositions for coloring or lightening the hair, such as that the anionic, cationic, nonionic, amphoteric or zwitterionic polymers or their mixtures being understood that the polymers are different from thermo-thickening polymers as described above; antioxidants; penetrating agents; sequestering agents; the perfumes ; dispersants; film-forming agents; preservatives; opacifying agents and thickening agents.

The adjuvants above are generally present in an amount for each of them between 0.01 and 20% by weight relative to the weight of the composition. The compositions (A) and / or (B) and the ready-to-use composition of the process according to the invention may also comprise one or more inorganic thickening agents chosen from organophilic clays, pyrogenic silicas, or mixtures thereof. According to a particular embodiment of the process of the invention, part (A) does not contain clay. According to another particular embodiment of the invention, part (B) does not contain clay. Preferably, the process of the invention or the oil-rich direct emulsion resulting from the mixture of compositions (A) and (B) does not use or does not contain clay. The compositions (A) and / or (B) and the ready-to-use composition of the process according to the invention may also comprise one or more organic thickeners other than the thermo-thickening polymers as described above. These thickening agents may be chosen from fatty acid amides (diethanol or coconut monoethanol amide, oxyethylenated alkyl ether carboxylic acid monoethanolamide), polymeric thickeners such as cellulosic thickeners (hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose), guar gum and its derivatives (hydroxypropylguar), gums of microbial origin (xanthan gum, scleroglucan gum), crosslinked homopolymers of acrylic acid or acrylamidopropanesulfonic acid and non-thermo-thickening associative polymers (polymers comprising hydrophilic zones, and fatty-chain hydrophobic zones (alkyl, alkenyl comprising at least 10 carbon atoms) capable, in an aqueous medium, of reversibly associating with each other or with other molecules).

According to one particular embodiment, the organic thickener is chosen from cellulose thickeners (hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose), guar gum and its derivatives (hydroxypropylguar), gums of microbial origin (xanthan gum, scleroglucan gum). ), the crosslinked homopolymers of acrylic acid or acrylamidopropanesulfonic acid, and preferably from cellulosic thickeners with in particular hydroxyethylcellulose. The content of organic thickening agent (s), if present, usually ranges from 0.01% to 20% by weight, based on the weight of the compositions (A) and (B) and the ready-to-use composition, preferably from 0.1 to 5% by weight. The compositions (A) and / or (B) and the ready-to-use composition according to the invention are media comprising at least water and optionally one or more cosmetically acceptable organic solvents.

As a cosmetically accomible organic solvent, mention may be made of linear or branched, preferably saturated monoalcohols or diols, comprising 2 to 10 carbon atoms, such as ethyl alcohol, isopropyl alcohol and hexylene glycol (2 methyl 2,4-pentanediol), neopentyl glycol and 3-methyl-1,5-pentanediol; aromatic alcohols such as benzyl alcohol, phenylethyl alcohol; glycerol; polyols or polyol ethers such as, for example, ethylene glycol monomethyl, monoethyl and monobutyl ethers, 2-butoxyethanol, propylene glycol or its ethers such as, for example, propylene glycol monomethyl ether, butylene glycol, dipropylene glycol; and the alkyl ethers of diethylene glycol, especially C1-C4, for example, monoethyl ether or monobutyl ether diethylene glycol, alone or in mixture. The solvents, when they are present, generally represent between 1 and 40% by weight relative to the total weight of the dye composition, and preferably between 5 and 30% by weight relative to the total weight of the composition or compositions containing them.

Preferably the compositions (A) and / or (B) and the ready-to-use composition of the process of the invention contain water at a content ranging from 10 to 70%, better still from 20 to 55% by weight. total of the composition. The compositions (A) and / or (B) and the ready-to-use composition of the process according to the invention may be in various forms, such as in the form of liquids, creams, gels, or any other suitable form for dyeing keratinous fibers, and especially human hair. Advantageously, the compositions (A) and / or (B) and the ready-to-use composition of the process according to the invention according to the invention are in the form of a gel or a cream.

Preferably the ready-to-use composition resulting from the mixing of the compositions (A) and (B) is in the form of a direct emulsion. The pH of the composition after mixing parts (A) and (B) of the process according to the invention is advantageously between 3 and 12, preferably between 5 and 11, preferably between 7 and 11 inclusive. It can be adjusted to the desired value by means of acidifying or alkalizing agents usually used for dyeing keratin fibers or else using conventional buffer systems.

The alkaline agents are for example those described above. Acidifying agents include, for example, inorganic or organic acids such as hydrochloric acid, orthophosphoric acid, carboxylic acids such as tartaric acid, citric acid, acid lactic acid, or sulfonic acids.

Preparation method of the direct emulsion resulting from the mixture fA) and (J: The ingredients of the abovementioned compositions (A) and (B) and their contents are determined according to the characteristics detailed previously for the composition resulting from the final mixture (A) and (B) according to the invention It should be noted that the mixture of the compositions (A) and (B) is preferably a direct emulsion The weight ratio composition (A) / composition (B) in the mixture preferably varies from 0 , 2 to 2, more preferably 0.3 to 1, more preferably 0.5 to 1.

According to a particular embodiment of the invention the mixture (A) and (B) is made by putting together in a container the composition (A) with the composition (B) is to mix them preferably vigorously, for a few seconds a few minutes before application to keratin fibers. This mixture can be produced using a multi-compartment device or kit as defined below, one of the compartments of which is devolved to the mixture of compositions (A) and (B) and can be stirred safely in a vacuum. until a homogeneous emulsion is obtained. The ready-to-use composition obtained from the mixture of compositions (A) and (B) is such that, preferably, the fat content varies from 25 to 80% by weight, preferably from 25 to 65% by weight, more preferably 30 to 55% by weight, relative to the total weight of the mixture of compositions (A) and (B). The invention also relates to a composition in the form of a direct emulsion comprising at least 30% by weight of oil (s) relative to the weight of the composition (A), and also comprising: 0 at least one nonionic surfactant solid at room temperature and at atmospheric pressure and HLB ranging from 1.5 to 10 as defined above; H) at least one thermo-thickening polymer as defined above; HO at least one basifying agent as defined above; iv) optionally at least one surfactant different from the solid nonionic surfactants (0 as defined previously, and y) optionally at least one dye. Preferably, the composition does not comprise a chemical oxidant. Another subject of the invention is represented by a ready-to-use, coloring or lightening composition of human keratinous fibers, obtainable by an extemporaneous mixture at the time of use, of a composition ( A) with a composition (B); the resulting mixture comprising at least 25% by weight of fatty substance relative to the total weight of the mixture of compositions (A) and (B); the compositions (A) and (B) being as defined above. More particularly, this composition comprises at least 25% by weight of a mixture of fatty substances comprising at least one oil; At least one solid nonionic surfactant at room temperature and at atmospheric pressure at HLB ranging from 1.5 to 10 as defined above; H) at least one thermo-thickening polymer as defined above; HO at least one basifying agent as defined above; iv) optionally at least one additional surfactant other than the solid nonionic surfactants (i) as defined above; y) optionally at least one dye as defined above; and at least one chemical oxidizing agent. Multi-compartment devices: The invention also relates to a device with two or more compartments, comprising: in a first compartment, a composition (A) as defined above; and in another compartment, a composition (B) as defined above. The following example serves to illustrate the invention without being limiting in nature.

EXAMPLE The following Composition A is prepared (the amounts are expressed by weight ie in g% of raw material as it is)): Composition A% by Weight Petrolatum Oil 60 STEARETH-2 (*) 2.25 0 STEARETH- (**) 7.75 ii) Thermo-thickening polyurethane 0.50 HO MonoEtanolAmine (MEA - basifying agent) 4.09 y) 1-Betahydroxyethyloxy 2,4-diamino benzene dihydrochloride 0,017 y) 1,3-dihydroxybenzene 0 , 51 y) 1-methyl-2,5-diamino benzene 0.53 y) 1-hydroxy-3-amino benzene 0.077 Sodium metabisulfite 0.45 EDTA 0.20 Ascorbic acid 0.25 Perfume 0.60 Distilled water Qsp 100 * Steareth-2: stearyl alcohol polyethylene glycol ether of the following formula CH3 (CH2) 16CH2 (OCH2CH2) 20H. ** Steareth-20: stearyl alcohol polyethylene glycol ether of the following formula CH 3 (CH 2) 16 CH 2 (OCH 2 CH 2) 200H.

The following composition (B) is prepared (the amounts are expressed by weight ie in g% of raw material as it is)): Composition B% by weight Poly (dimethyliminio dichloride) -1.3- 0.25 propanediyl ( dimethyliminio) -1,6-hexanediyl in 60% aqueous solution (Mexomere PO from CHIM EX) Diethylene triamine pentaacetic acid, pentasodium salt n 0.15 40% aqueous solution 4-EO rapeseed acid amide (Amidet N de KAO) 1,3 Hydrogen peroxide 6 Glycerol 0.5 Alcohol cetyl stearyl (Nafol 1618 S from SASOL) 6 Stearyl alcohol with 2 EO (Brij S20-S0 from CRODA) 5 Vaseline oil 20 Stabilizer of hydrogen peroxide qs Tetrasodium phosphate , 10 H2O 0.03 40% polydimethyldiallyl ammonium chloride in 0.5 water (Merquat 100 of NALCO) Phosphoric acid Qs pH Water Qs 100 compositions (A) and (B) are mixed in a ratio of 1/1 . Mixing is easy. Mode of application The mixture is then applied to locks of dark brown natural hair (pitch HT = 3) at the rate of 10 g of mixture per 1 g of hair. The application is easy and the product remains well located at the application site. The mixture is left at ambient temperature at (25 ° C.) for 30 minutes. There is no unpleasant odor during application. The hair is then rinsed, washed with standard shampoo and dried. Light brown (HT = 5) natural locks are obtained with a good color intensity.

Claims (20)

REVENDICATIONS1. A process for dyeing or lightening keratinous fibers comprising the extemporaneous mixing step at the time of use of two compositions (A) and (B) and the step of applying said mixture to said fibers; said mixture and comprising at least 25% by weight of fatty substance relative to the total weight of the composition resulting from the mixture of two compositions (A) + (B); with: (A) representing a composition in the form of a direct emulsion whose oil content (s) is at least 30% by weight relative to the weight of the composition (A), and comprising: 0 at least one surfactant nonionic solid at room temperature of HLB ranging from 1.5 to 10 at room temperature and at atmospheric pressure; H) at least one thermo-thickening polymer; HO at least one basifying agent; iv) optionally at least one additional surfactant different from solid nonionic surfactants (0; y) optionally at least one dye; and (B) representing a composition comprising at least one chemical oxidizing agent. 2. Method according to the preceding claim wherein the composition (A) has an oil content (s) of at least 50% by weight relative to the weight of the composition (A). 3. The process as claimed in claim 1 or 2, wherein the solid non-ionic surfactant with HLB ranging from 1.5 to 10 is chosen from oxyalkylenated and / or glycerolated nonionic surfactants, and preferably from nonionic surfactants. ionic oxyalkylenes. 4. Process according to any one of the preceding claims, in which the HLB solid nonionic surfactant (s) between 1.5 and 10 are chosen from: oxyalkylenated (C 8 -C 24) alkyl phenols; saturated or unsaturated, linear or branched, oxyalkylenated C 8 -C 30 alcohols; saturated or unsaturated, linear or branched, optionally oxyalkylenated C 8 -C 30 amides; saturated or unsaturated, linear or branched, C 8 -C 30 acid esters of polyethylene glycols; saturated or unsaturated, linear or branched, and optionally polyoxyethylenated sorbitol esters, saturated or unsaturated, linear or branched polyglycerolated C 8 -C 30 acids, oxyethylenated vegetable oils, saturated or not; - C8-C30 alkyl glucosides - condensates of ethylene oxide and / or propylene oxide, among others, alone or in mixtures. Oxyethylenated and / or oxypropylenated silicones; more particularly the surfactants having a number of moles of ethylene oxide and / or propylene preferably ranging from 1 to 100, better still from 2 and 10, more preferably from 2 to 6. 5. Process according to any one of the preceding claims, in which the HLB solid nonionic surfactant or surfactants of between 1.5 and 10 are chosen from mono or polyoxyalkylene nonionic surfactants, the oxyalkylenated units being especially oxyethylenated units. , oxypropylenés, or combination thereof, and even more particularly chosen from oxyethylenated C 8 -C 30 alcohols comprising from 1 to 6 moles of ethylene oxide. 6. Process according to any one of the preceding claims, in which the solid nonionic surfactant or surfactants are chosen from solid nonionic surfactants having an HLB between 2.5 and 8. 7. A process according to any one of the preceding claims wherein the solid nonionic surfactant content in emulsion (A) contains from 0.1 to 30% of said surfactants; preferably from 0.5 to 20% by weight, and particularly from 1 to 10% by weight, relative to the total weight of the emulsion (A). 8. Process according to any one of the preceding claims, characterized in that the oils are chosen from C6-C16 lower alkanes; non-silicone oils of animal origin; glycerides of vegetable or synthetic origin; hydrocarbons, linear or branched, of mineral or synthetic origin of more than 16 carbon atoms; fluorinated oils; liquid fatty alcohols; liquid fatty esters; non-salified liquid fatty acids; silicone oils; or mixtures thereof and preferably are selected from C6-C16 lower alkanes; hydrocarbons, linear or branched, of mineral or synthetic origin of more than 16 carbon atoms; liquid fatty alcohols; or their mixtures. 9. Process according to any one of the preceding claims, characterized in that the oil or oils are chosen from liquid petroleum jelly, polydecenes, octyldodecanol or isostearyl alcohol or their mixtures. 10. Process according to any one of the preceding claims, in which ii) the thermo-gelling polymer (s) is (are) water-soluble and is wholly or partly derived from polymerization, from at least one monomer chosen from the following monomers: meth) acrylic; the vinyl monomers of formula (I) below: H 2 C = C (R) -C (O) -X (I) Formula (I) in which: R is chosen from H, C 1 -C 6 alkyl such as -CH 3 , -C2H5 or -O3H7; and - X is chosen from: - alkyl oxides of the type -OR 'where R' is a hydrocarbon radical, linear or branched, saturated or unsaturated, having from 1 to 6 carbon atoms, optionally substituted by at least one atom halogen; a sulphonic group (-SO3), sulphate (-SO4), phosphate (-PO41-12); hydroxy (-OH); primary amine (-NH2); secondary amine (-NHR1), tertiary (-NR1R2) or quaternary (-N + R1R2R3) with R1, R2 and R3 being, independently of one another, a linear or branched, saturated or unsaturated hydrocarbon radical having 1 to 6 carbon atoms, provided that the sum of the carbon atoms of R '+ + R2 + R3 does not exceed 7; and the -NH2, -NHR4 and -NR4R5 groups in which R4 and R5 are independently of each other linear or branched, saturated or unsaturated hydrocarbon radicals having 1 to 6 carbon atoms, provided that the number total of carbon atoms of R4 + R5 does not exceed 7, said R4 and R5 being optionally substituted by a halogen atom (iodine, bromine, chlorine, fluorine); a hydroxy group (-OH); sulfonic (-SO3); sulfate (-SO4); phosphate (-P041-12); primary amine (-NH2); secondary amine (-NHR1), tertiary (-NR1R2) and / or quaternary (-N + R1R2R3) with R1, R2 and R3 being, independently of one another, a hydrocarbon radical, linear or branched, saturated or unsaturated having 1 to 6 carbon atoms, provided that the sum of the carbon atoms of R4 + R5 + + R2 + R3 does not exceed 7; maleic anhydride; - itaconic acid; the vinyl alcohol of formula CH 2 = CHOH; vinyl acetate of formula CH2 = CH-OCOCH3; N-vinyllactams such as N-vinylpyrrolidone, N-vinylcaprolactam and N-butyrolactam, vinyl ethers of formula CH2 = CHOR6 in which R6 is a linear or branched, saturated or unsaturated hydrocarbon-based radical having from 1 to 6 carbons; water-soluble derivatives of styrene, in particular styrene sulphonate; dimethyldiallyl ammonium halide such as dimethyldiallyl ammonium chloride; and vinylacetamide. 11. Process according to any one of the preceding claims, in which ii) the thermo-gelling polymer (s) are water-soluble and are chosen from: (1) polyurethanes comprising polyethylene oxide / polyoxypropylene / polyethylene oxide (or POE) groups; POP-POE); (2) multiblock copolymers comprising a randomly distributed poly-N-isopropylacrylamide and n-butylacrylate block and a polyethylene glycol block; (3) copolymers of acrylamidopropylmethanesulfonic acid (or AMPS) or their salts and ethoxylated and / or propoxylated (meth) acrylic acid and alkyl ester macromonomers; (4) copolymers consisting of a polyacrylic acid (PAA) backbone bearing side chains or grafts constituted by units with an LCST chosen from: (i) those of the type of random copolymers of ethylene oxide (OE) and propylene oxide (OP), represented by the formula: (0E). (OP) n wherein m is an integer from 1 to 40, preferably from 2 to 20, and n is an integer from 10 to 60, preferably from 20 to 50; the molar mass of these units with LCST preferably being from 500 to 300 g / mol, more preferably from 1500 to 4000 g / mol; (ii) poly N-isopropylacrylamide polymers whose molar mass is preferably from 1,000 g / mol to 500,000 g / mol, more preferably from 2,000 to 50,000 g / mol; and preferably from polyurethanes (1). 12. Method according to any one of the preceding claims wherein the rate ii) the thermo-thickening polymer or polymers varies from 0.01 to 20% and better still, from 1% to 10% relative to the total weight of the composition (A). . 13. Process according to any one of the preceding claims, in which the composition (A) comprises at least one basifying agent HO which is chosen from aqueous ammonia, alkali carbonates or bicarbonates, such as sodium or potassium carbonates, or sodium hydroxides. sodium or potassium or their mixtures and more particularly from organic amines, particularly alkanolamines such as monoethanolamine. 14. Process according to any one of the preceding claims, in which the composition (A) comprises iv) at least one additional surfactant, in particular chosen from nonionic surfactants with an HLB greater than 10, especially chosen from oxyalkylenated or glycerolated nonionic surfactants, and preferably oxyalkylenated at HLB greater than 10. 15. A process for dyeing keratinous fibers according to any preceding claim wherein the composition (A) comprises v) at least one dye chosen from a) oxidation dyes, b) direct dyes or mixtures of a) and b); especially a) being at least one oxidation base selected from oxidation bases such as para-phenylenediamines, bisphenylalkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases and their addition salts and optionally associated with minus one coupler chosen from meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalenic couplers, heterocyclic couplers and their addition salts. 16. A method for lightening keratinous fibers according to any one of claims 1 to 14, the composition resulting from the mixture of compositions (A) and (B) preferably the composition (A) does not contain oxidation bases or coupler neither direct dye. 17. The process as claimed in any one of the preceding claims, in which the composition (B) comprises at least one oxidizing agent chosen from hydrogen peroxide, urea peroxide, alkali metal bromates or ferricyanides, and peroxygenated salts such as for example persulfates, perborates and percarbonates of alkali or alkaline earth metals, and peracids and their precursors; preferentially hydrogen peroxide. 18. Composition (A) in the form of a direct emulsion as defined in any one of the preceding claims. 19. A ready-to-use composition resulting from the mixing of a composition (A) in direct emulsion form as defined in any one of claims 1 to 15 and a composition (B) comprising at least one chemical oxidizing agent such as as defined in claims 1 or 17, preferably hydrogen peroxide. 20. Device comprising at least two compartments containing: in a first compartment, a composition corresponding to the composition (A) as defined in one of claims 1 to 15; and in another compartment, a composition corresponding to the composition (B) which comprises at least one chemical oxidizing agent as defined in one of claims 1 and 17.