FR3000080A1 - WATER INSOLUBLE CYCLODEXTRIN POLYCONDENSATE; USES AS CAPTURE AGENT - Google Patents

Abstract

The subject of the present invention is a water-insoluble cyclodextrin polycondensate obtainable by esterification / polycondensation reaction: A) of at least one cyclodextrin and B) of at least one linear or branched polycarboxylic acid or cyclic, saturated or unsaturated or aromatic and / or at least one acid ester or anhydride or acid halide of said polycarboxylic acid and C) at least one thermoplastic polyol polymer and D) optionally at least one esterification catalyst and / or E) optionally at least one cyclic anhydride of polycarboxylic acid chosen to be different from the polycarboxylic acid anhydride of paragraph B) and / or F) optionally of at least one non-polyol polymer comprising from 3 to 6 hydroxyl groups. The invention also relates to the use of said cyclodextrin polycondensate as a capture agent for a substance or a mixture of substances chosen from: (i) those likely to pollute the environment, (ii) those likely to have a negative impact on a consumer product; (iii) those liable to deteriorate under the influence of atmospheric agents or in contact with one or more ingredients in a composition; (iv) those capable of generating discomfort reactions on a particular keratinous material. (v) beneficial agents.

Description

WATER INSOLUBLE CYCLODEXTRIN POLYCONDENSATE; The present invention relates to a water-insoluble cyclodextrin polycondensate obtainable by esterification / polycondensation reaction: A) at least one cyclodextrin and B) at least one acid polycarboxylic acid, linear or branched or cyclic, saturated or unsaturated or aromatic and / or at least one acid ester or anhydride or an acid halide of said polycarboxylic acid and C) at least one thermoplastic polyol polymer and D) optionally at least one esterification catalyst and / or E) optionally at least one polycarboxylic acid cyclic anhydride chosen to be different from the polycarboxylic acid anhydride of paragraph B) and / or F) optionally at least one nonpolymeric polyol comprising from 3 to 6 hydroxyl groups. The invention also relates to the uses of these cyclodextrin polycondensates as capturing agents of a wide variety of substances in many industrial fields.

The objective of the present invention is to find new materials for trapping in their matrix a very wide range of substances or mixtures of substances such as those likely to pollute the environment, those likely to have a negative impact on the environment. a wide variety of consumer products in many fields of industry or in the cosmetic field, those likely to generate for example reactions of discomfort on a keratinous material including human.

Another object of the present invention is also to find new materials for trapping at least one beneficial agent and to delay its release time to the outside in order to (i) protect it for example during storage or during transport to prevent it from deteriorating for example under the influence of atmospheric agents such as heat or cold, temperature variations, ambient humidity, oxygen of the air, UV radiation, ( (ii) because of its sensitive chemical or physical nature, to isolate it and to prevent or delay its contact with one or more other ingredients of a composition or the site to which it is to be applied with which it is incompatible ; (iii) trap it and extend the duration of its release from capture material in order to improve its effectiveness, and / or its keeping and / or deposit on the area where it is to be applied.

Among the beneficial agents used in particular in the cosmetics industry, or the pharmaceutical industry, in the perfume industry, in the food industry or in the products of the textile or leather industry, in particular in textiles or in products in particular, perfumes, scented essences, essential oils, whiteners, insecticides, dyestuffs, lipids, silicones, waxes, flavors, enzymes, oxidants, micro-organisms, -organisms, phyto-sanitary assets, food additives such as flavor enhancers, fabric softening agents, antibacterials, cooling agents, active ingredients of drugs, cosmetic or dermatological active ingredients. Such beneficial agents are generally expensive and / or volatile and / or physico-chemically unstable and / or effective over too short periods. There is therefore a need to optimize their quantity in order to limit costs, improve their stability, protect them from their environment and / or improve their efficiency over time.

One of the known means of the prior art to achieve these objectives is the microencapsulation of these substances. In addition to the advantages mentioned above, this encapsulation can also make the material easier to use by diluting it and promoting its homogeneous distribution within the support. Microencapsulation brings together all the technologies allowing the coating or the trapping of substances in solid, liquid, or gaseous form within individualized particles whose size ranges between a few microns and a few millimeters. If these microparticles are hollow (vesicular) we speak of microcapsules, if they are full (matrix) we speak of microspheres. Their size varies from 1 pm to more than 1000 pm. These microparticles can be biodegradable or not and can contain between 5 and 90% (by weight) of encapsulated substance.

The encapsulated substances have very different origins: pharmaceutical active ingredients, cosmetics, food additives, phytosanitary products, scented essences, micro-organisms, cells, or catalysts of chemical reaction ... All the interest of these known microcapsules resides in the presence of a polymeric membrane, which insulates and protects the contents of the external environment. Depending on the case, the membrane will be destroyed during use to release its contents (example: advertising inserts "scratch and sniff" releasing the perfume when crushing the microcapsules), or the membrane will remain present throughout the release content, which it will control the rate of diffusion (example: encapsulation of drugs for slowed release). The main processes of the prior art to carry out the encapsulation of substances in microparticles are interfacial polymerization, interfacial crosslinking, emulsion followed by evaporation or extraction of the solvent, double emulsion evaporation / extraction of solvent, spray drying, prilling, coacervation, ...

Microbeads made of hydrophobic polymeric materials are also known which are generally prepared by phase separation techniques (coacervation or extraction-evaporation of solvent) or by polymerization or polycondensation. Phase separation techniques generally use organic solvents which have a certain number of disadvantages: elimination in the atmosphere, remanence within the galenic systems, denaturation of certain microencapsulated molecules. The polymerization or polycondensation methods known hitherto have the disadvantage of using highly reactive materials capable of reacting with the substances encapsulated within the microbeads. Also known from the prior art are microbeads formed from hydrophilic polymeric materials which are generally prepared by gelation or coacervation techniques. This technique which makes it possible to encapsulate molecules in liquid or solid form is based on the desolvation of macromolecules leading to a phase separation within a solution. As regards the encapsulation in lipid materials, the technique of microencapsulation by thermal gelation is known. This process called "hot melt" is based on the melting of the coating material. The substance to be encapsulated is dissolved or dispersed in this molten material. The whole is emulsified in a dispersing phase whose temperature is maintained higher than the melting temperature of the coating. The solidification of the dispersed globules is obtained by rapidly cooling the medium. In addition to this type of particulate microencapsulation, molecular encapsulation (cyclodextrins) is also known. The latter is an interesting alternative to the conventional encapsulations described above. Cyclodextrins have in fact been used increasingly for this purpose since the 1980s because they are caged molecules which can selectively and reversibly complex a large variety of organic molecules in the form of "host" type inclusion complexes. -invite ". Cyclodextrin inclusion complexes are particularly useful for transporting, protecting and releasing chemically and thermally sensitive ingredients. The release of complexed ingredients is usually caused by water or temperature. Cyclodextrins are a family of natural cyclic oligosaccharides obtained by enzymatic degradation of starch. They consist of alpha-D-glucose units (6 to 12 units) linked together to form cycles delimiting at their center a truncated cone cavity. The most abundant are the hexamers (α-cyclodextrin), heptamers ([3-cyclodextrin) and octamers (rcyclodextrin) which differ in the number of glucose units and consequently in the size of the conical cyclic cavity that results. All hydroxyl (OH) polar groups are located outside, making the exterior hydrophilic and explaining their solubility in water. The interior of the cavity containing only the glycosidic oxygen atoms and the hydrogen atoms directly attached to the carbons, the latter is hydrophobic and considerably less polar. This amphiphilic nature allows the cyclodextrins to include in their cavity lipophilic (hydrophobic) molecules, provided that the size and geometric shape of the molecules is suitable for forming inclusion complexes generally soluble in water. Their non-toxic and biodegradable nature predisposes them to important applications in the agri-food and pharmaceutical fields. Encapsulation in cyclodextrins makes it possible to protect fragile molecules or to ensure their slow and controlled release. In addition, the solubilization of water-insoluble drugs in the form of inclusion complexes in cyclodextrins makes it possible to dispose of injectable preparations. Native cyclodextrins can be chemically modified, for example as ethers or esters, which will modify the solubility of both modified cyclodextrins and inclusion complexes. The resulting benefits are multiple and allow cyclodextrins to be widely used in different industrial fields. Cyclodextrins are thus commonly used as a formulation excipient in drugs. They make it possible in particular to transform liquid compounds into solids (powders, tablets) by precipitation of the inclusion complexes. The complexation of the active ingredients makes it possible to better control their passage in the blood circuit or the progressivity of their diffusion. Another application is sub-lingual treatment. The complexation of photosensitive or highly reactive active ingredients can often protect or stabilize them. The agri-food industry also commonly uses cyclodextrins as a flavor enhancer by allowing an easy addition of taste compounds or to fix too volatile molecules and prolong for example the taste duration of chewing gums. They are also used to instead remove some unwanted molecules, especially to reduce cholesterol or bitter compounds of cooked dishes or as masking agents against odors. Cyclodextrins are also used to stabilize emulsions such as mayonnaise or margarines. In cosmetics, they also make it possible to stabilize emulsions and odorous or active molecules.

In the textile industry, they are used to attach active compounds (perfumes, antibacterials) to the fabric. However, the cyclodextrins commonly used have drawbacks. From a geometric point of view, the inclusion will depend on the relative size of the cavity of the cyclodextrin in relation to the size of the guest molecule: if it is too large, it will not be able to penetrate. inside the cavity of the cyclodextrin and if, on the other hand, its size is too small, it will have few interactions with the cyclodextrin.

The steric effect therefore plays an important role in the phenomenon of complexation. In addition, the molar ratio cyclodextrin: guest molecule of inclusion complexes is generally 1: 1 or greater; otherwise expressed, at most one molecule is transported per molecule of cyclodextrin. Finally, the chemical nature of compounds capable of forming stable inclusion complexes with cyclodextrins is restricted to lipophilic (hydrophobic) compounds since they must displace the water molecules present in the cavity. The relatively low solubility in water of cyclodextrins, in particular commercial cyclodextrins, and in particular the most economically accessible of them, 8-cyclodextrin (18 g / L, ie 15 mmol / l, at 25.degree. ° C), may constitute a limit in their use. In order to remedy this state of affairs, chemically modified cyclodextrins have been proposed in the prior art. For example, the primary alcohols have been substituted with monosaccharide or oligosaccharide groups, so as to improve their solubility in water on the one hand and, on the other hand, to incorporate in their structure cellular recognition signals (international applications PCT VVO 95/19994, VVO 95/21870 and VVO 97/33919). However, the cyclodextrin derivatives of the prior art may have certain limitations, particularly with respect to the substances which may be transported, of the substance loading capacity per unit mass of the cyclodextrin derivative, of their capacity. to complex certain families of molecules including hydrophilic, their cost, their toxicity, their ease to be synthesized. Also known in the prior art are cyclodextrin polymers which exhibit stability constants of the polymer-substrate complexes which are often larger than those of native-substrate cyclodextrin complexes, and for which the hydrophobic, hydrophilic and supramolecular compounds are more easily complexed and less easily released by cyclodextrin polymers than by native cyclodextrins.

Different types of cyclodextrin polymers and different methods of preparation are thus known in the prior art (see for example Comprehensive Supramolecular Chemistry vol.3, J.L. Atwwood et al., Eds Pergamon Press (1996)).

These cyclodextrin polymers can be classified into 2 types depending on whether the cyclodextrin is the backbone of the polymer or is a lateral substituent of a polymer chain. The methods of synthesis of these cyclodextrin polymers of the prior art in which the cyclodextrin constitutes the backbone are based on the use of generally bi-functional crosslinking agents such as epichlorohydrin, dialdehydes, diacids, diesters, diisocyanates, dihalogenated derivatives, polyisocyanates, bis epoxides, acid dihalides in an organic solvent or phytic acid. A process for making cyclodextrin (s) copolymers using epichlorohydrin has been proposed by Solms and Egi (Helv Chim Acta 48, 1225 (1965), US3420788). Also, several modifications of the crosslinking method with epichlorohydrin were later proposed in VViedenhof N. et al, Die Starke 21 (5), 119-123 (1989), Hoffman J.L., J. Macromol. Sci.-Chem, A7 (5), 1147-1157 (1973), JP58171404 and JP61283601.

A process using a bifunctional agent such as a dialdehyde, a diacid, a diester, an acid dichloride, a diepoxide, a diisocyanate or a dihalogenated derivative has been described in US3472835. This method provides for the activation of cyclodextrins by the action of sodium metal in liquid ammonia and then the reaction with the bi-functional crosslinking agent.

A process using polyisocyanates in aprotic organic solvents has been described in US4917956, Asanuma H. et al Chem. Common, 1971-1972 (1997) and WO9822197.

A process using ethylene glycol bis (epoxypropyl ether) has been described by Fenyvesi E. et al in Ann. Univ. Sci. Budapest, Rolando Eotvos Nominatae, Sect. Chim. 15, 13-22 (1979). A process using other diepoxy compounds has also been described by Sugiura I. et al in Bull. Chem. Soc. Jpn, (62, 1643-1651 (1989)). A process using dihalides of dicarboxylic acids in an organic solvent has been developed in U54958015 and US4902788.

A process based on phytic acid (which is a polyphosphoric acid) used to crosslink the cyclodextrin by vacuum heat treatment has been described in U55734031.

The main disadvantage of the methods for crosslinking cyclodextrins with epichlorohydrin is the corrosive and toxic properties of this reagent. Methods based on the use of diepoxy compounds are found to be toxic and cost-effective. Crosslinking with polyisocyanates and diacid diacids requires the use of environmentally harmful organic solvents and therefore can not be used on a large scale. The second type of polymer is one in which the cyclodextrin is a pendant group of a polymer chain; it is produced by grafting cyclodextrin (s) or derivative (s) of cyclodextrin (s) on a pre-existing polymer chain. Thus, it is known in document DE19520989 to graft cyclodextrins onto polymers. On the other hand, cyclodextrins have also been functionalized with aldehyde groups and then grafted onto chitosan by reductive amination reaction; such a reaction is described by Tomoya T. et al in J. Polym. Sci., Part A: Polym. Chem. 36 (11), 1965-1968 (1998). These cyclodextrin-based polymers can also be synthesized by functionalizing it with polymerizable functional groups such as acryloyl or methacryloyl. This functionalization is followed by a polymerization or copolymerization of these derivatives. Such methods have been described in DE4009825, by VVimmer T. et al in Minutes Int. Symp. Cyclodextrins 106-109, (1992) Ed Hedges AL Ed. Sant Paris, by Harada A. et al in Macromolecules 9 (5), 701-704 (1976). Finally, a process using acrylates, acrylic acid and styrene with insolubilization of the cyclodextrin was carried out by emulsion polymerization in EP780401. To obtain cyclodextrin polymers under non-polluting, non-toxic and less costly conditions than those of the processes mentioned above, MARTEL et al have described in EP1165621B1 the synthesis of polymers from a solid mixture of cyclodextrin, d polycarboxylic acid or polycarboxylic acid anhydride and a crosslinking catalyst, at a temperature of 100 to 200 ° C without the use of organic solvent. The mechanical properties and molecular weight of these polymers are uncontrollable, with low stability and low molecular weight. The work of B. Martel et al (Journal of Applied Polymer Science, Vol.97, 433-442 (2005)) describes a yield of 10% for obtaining soluble polymers and 70% for obtaining insoluble polymers. . These yields are low and require a very long purification step (60 hours of dialysis) followed by lyophilization. There is therefore still a need to propose novel cyclodextrin polymers which can capture and / or encapsulate large quantities of substances without the disadvantages mentioned above and which can be easily prepared without the use of toxic and / or expensive reagents. To overcome the disadvantages of the prior art, the object of the present invention is to immobilize cyclodextrins in a crosslinked polymeric network having absorbent properties and functioning as a sponge. After extensive research, we have surprisingly and unexpectedly found that cyclodextrins can be effectively, rapidly, and inexpensively immobilized in a polymer network crosslinked by esterification / polycondensation reaction of acid (s). ) polycarboxylic (s) simultaneously with a thermoplastic polyol polymer and a cyclodextrin and that these crosslinked and insoluble water-soluble cyclodextrin polycondensates led to improved performance in terms of encapsulation capacity while being conveyable in many media. This discovery is the basis of the present invention. The subject of the present invention is therefore a water-insoluble cyclodextrin polycondensate obtainable by esterification / polycondensation reaction: A) at least one cyclodextrin and B) at least one linear or polycarboxylic acid, branched or cyclic, saturated or unsaturated or aromatic and / or at least one ester, acid anhydride or acid halide of said polycarboxylic acid and C) at least one thermoplastic polyol polymer and D) optionally at least an esterification catalyst and E) optionally at least one polycarboxylic acid cyclic anhydride chosen to be different from the polycarboxylic acid anhydride of paragraph B) and / or F) optionally at least one non-polymeric polyol comprising from 3 to 6 hydroxyl groups.

Another subject of the invention consists in the use of a cyclodextrin polycondensate as defined previously as a capture agent. Another subject of the invention relates in particular to the use of a cyclodextrin polycondensate as defined previously as a capture agent for a substance or a mixture of substances likely to pollute the environment or a substance or a mixture of substances that may have a negative impact on a consumer product.

Another subject of the invention relates in particular to the non-therapeutic cosmetic use of a cyclodextrin polycondensate as defined above as an agent for capturing a substance or a mixture of substances capable of generating, for example, reaction reactions. discomfort on a particular keratinous material. Another subject of the invention relates in particular to the use of a cyclodextrin polycondensate as defined previously as agent for capturing at least one beneficial active agent.

Another subject of the invention consists of a consumer product comprising at least one cyclodextrin polycondensate as defined above and more particularly the consumer product is a cosmetic or dermatological composition comprising a physiologically acceptable medium. Definitions "Polycondensate" means, within the meaning of the invention, any polymer obtained by stage polymerization where each stage is a condensation reaction which is carried out with removal of water or an alcohol or a halogenated acid. in the case of an esterification. Monomers with two or more functional groups react to first form dimers, then longer trimers and oligomers, and then long chain polymers.

By "water-insoluble cyclodextrin polycondensate" is meant any polycondensate of cyclodextrin having a solubility in water at 25 ° C. of less than 1% by weight or even less than 0.5% by weight or even less than 0, 1% by weight.

For the purposes of the invention, the term "capture agent" is intended to mean any chemical compound, in particular any polymer capable of trapping a substance or a mixture of substances in its structure, of immobilizing it and / or of delaying its release to the body. The polycondensate cyclodextrin polymers of the invention have a porous network which combines super-absorbent properties of the sponge type with the ability to form inclusion complexes in the cyclodextrin cavities immobilized within the polymeric network, thereby permitting to capture substances having an affinity with said polymeric network.

For the purposes of the present invention, the term "physiologically acceptable medium" means a medium suitable for the administration of a composition topically.

A physiologically acceptable medium is preferably a cosmetically or dermatologically acceptable medium, that is to say without odor, or unpleasant appearance, and which is perfectly compatible with the topical route of administration.

By "keratin materials" is meant the skin, the leather, the scalp, the lips, and / or the integuments such as the nails and the keratin fibers, such as, for example, animal furs, hair, wool, eyelashes, eyebrows and hair.

By "human keratin materials" is meant the skin, the scalp, the lips, and / or the integuments such as the nails and the human keratinous fibers such as, for example, the hairs, the eyelashes, the eyebrows and the hair,.

By "cosmetic composition" is meant in the sense of the invention any composition having a non-therapeutic effect of hygiene, care, conditioning or makeup contributing to the improvement of well-being and / or embellishment or the modification of the appearance of the human keratin material to which said composition is applied.

"Consumer product" means any product manufactured for use or consumption in the form in which it is marketed and which is not intended for subsequent manufacture or modification. Without the examples being limiting, the consumer products according to the invention may be cosmetic products including both cosmetic formulations and carriers or application articles comprising such formulations as patches, wipes, woven; personal hygiene products including care and hygiene formulations and articles therefor such as periodical tampons, wipes, towels; oral care products such as toothpastes, mouth care products, deodorants such as sprays, chewing gums, sweets, breath tablets; cosmetic or dermatological products: creams, milks, lotions, balms, sticks, talcs; makeup products; hair products; baby care products including formulations and articles therefor such as wipes, diapers; pharmaceutical products as well as medical and paramedical articles such as dressings, patches, prostheses; veterinary products such as animal litter; hygiene products and / or animal care; household cleaning products such as products for the care and / or cleaning of laundry (detergents, softeners), dishwashing products, cleaning and / or maintenance products for household appliances, cleaning products and / or or maintenance of floors, tiles, wood etc .; sanitary products such as deodorants, descaling products, unblocking products; textile materials, clothing, leather goods such as shoes, soles and their cleaning products; products from the agri-food industry; products from agriculture; phytosanitary products; products from the wood and paper industry; the paintings ; inks.

For the purposes of the invention, the term "beneficial agent" means any chemical compound present in a consumer product producing a beneficial effect perceived by the consumer during his use and / or obtained on the consumer product itself, said effect beneficial that can be a sensory improvement including visual and / or olfactory and / or taste and / or tactile, an improvement or modification of comfort and / or ease of application, an aesthetic effect, a hygienic effect, a feeling of cleanliness, a curative and / or prophylactic effect.

CYCLODEXTRIN POLYCONDENSATES The cyclodextrin polycondensates according to the invention can be prepared easily, in a single synthetic step, and without generating waste, at low cost, in particular by carrying out the reaction in an extruder. Furthermore, it is easily possible to modify the structure and / or the properties of the cyclodextrin polycondensates according to the invention, by varying the chemical nature of the various constituents and / or their proportions. The cyclodextrin polycondensates according to the invention make it possible to generate a porous polymeric network which combines sponge-type superabsorbent properties with the ability to form inclusion complexes in the cyclodextrin cavities immobilized within the polymeric network. The cyclodextrin polycondensates according to the invention are capable of being obtained by esterification / polycondensation, according to the methods known to those skilled in the art, of the constituents described below. CYCLODEXTRINS One of the constituents necessary for the preparation of the cyclodextrin polycondensates according to the invention is a cyclodextrin.

For the purposes of the invention, the term "cyclodextrin" is intended to mean any compound of general structure OH or one of its derivatives, such as methylated, hydroxyalkylated, sulphoalkylated or sulphated derivatives or cyclodextrins substituted by sugars. Among the preferred cyclodextrins, α-cyclodextrin, F3cyclodextrin, γ-cyclodextrin and their methyl derivatives, such as TRIMEB (heptakis (2,3,6-trimethyl) 13-CD), DIMEB (heptakis (2, 6- dimethyl) 13-CD) or RAMEB (Randomly Methylated [3- Cyclodextrin); their hydroxyalkylated derivatives such as 2-hydroxypropyl-cyclodextrin (HP [3CD, Kleptose® HPB), 3-hydroxypropyl-3-cyclodextrin, 2,3-dihydroxypropyl-3-cyclodextrin, 2-hydroxyethyldi-cyclodextrin, 2-hydroxypropyl-y- cyclodextrin and 2-hydroxyethyl-γ-cyclodextrin; their sulphobutyl derivatives such as Sulfobutyl ether [3-cyclodextrin sodium know (SBE [3CD, CaptisolO); sulfated cyclodextrins such as [3-cyclodextrin sulfate; sugar-substituted cyclodextrins such as glucosyl-cyclodextrin, diglucosyl-cyclodextrin, maltosyl-cyclodextrin or dimaltosyl-cyclodextrin. A mixture of such cyclodextrins can of course be used. Preferably, the cyclodextrin is selected from α-cyclodextrin, F3-cyclodextrin, γ-cyclodextrin and mixtures thereof and most preferably β-cyclodextrin. The cyclodextrin or cyclodextrins preferably represent 10 to 70% by weight, especially 20 to 65% by weight, and more preferably 30 to 60% by weight of the total weight used in the synthesis of the cyclodextrin polycondensate.

POLYCARBOXYLIC ACIDS AND THEIR DERIVATIVES a) Polycarboxylic acids Another constituent necessary for the preparation of the cyclodextrin polymers according to the invention is a polycarboxylic acid, linear or branched or cyclic, saturated or unsaturated or aromatic, comprising at least 2 carboxylic groups COOH, preferably 2 to 4 COOH groups. Said polycarboxylic acid may in particular be chosen from linear, branched and / or cyclic, saturated or unsaturated or even aromatic polycarboxylic acids comprising 2 to 50 carbon atoms, especially 2 to 40 carbon atoms, in particular 3 to 36, or even 3 at 18, and more preferably 4 to 12 carbon atoms, or even 4 to 10 carbon atoms; said acid comprises at least two carboxylic groups COOH, preferably from 2 to 4 COOH groups.

Among the polycarboxylic acids that may be used, mention may be made, alone or as a mixture: dicarboxylic acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid , pimelic acid, suberic acid, azelaic acid, sebacic acid, dodecanedioic acid, malic acid, tartaric acid, tartronic acid, citramalic acid, dioxymaleic acid , dioxymalonic acid, maleic acid, fumaric acid, glutaconic acid, itaconic acid, fatty acid dimers (especially at 036), such as the products sold under the names Pripol 1006, 1009, 1013 and 1017 by Uniqema, glutamic acid, aspartic acid, oxaloacetic acid, cyclopropanedicarboxylic acid, cyclohexanedicarboxylic acid, cyclobutanedicarboxylic acid, naphthalene-1,4-dicarboxylic acid, naphthalene-2,3-dicarboxylic acid, naphthalene-2,6-dicarboxylic acid, phthalic acid, terephthalic acid, isophthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, tricarboxylic acids such as citric acid, aconitic acid, isocitric acid, oxalosuccinic acid, 1,2,3-propane tricarboxylic acid, 1,2,5-pentanetricarboxylic acid, 1,3,5-pentanetricarboxylic acid, transaconitic acid, 3-butene-1,2-acid, 3-tricarboxylic acid, 3-butene-1,1,3-tricarboxylic acid, 1,3,5-cyclohexanetricarboxylic acid, trimellitic acid, 1,2,3-benzenetricarboxylic acid, acid 1 , 3,5-benzenetricarboxylic; tetracarboxylic acids such as 1,2,3,4-butanetetracarboxylic acid, pyromellitic acid, oxydisuccinic acid, thiodisuccinic acid, N- [1,2-dicarboxyethyl] -L-aspartic acid, acid, ethylenediamine tetraacetic acid, ethylenediamine tetrapropionic acid, N, N'-ethylene di- (L-aspartic acid). Preferably, said polycarboxylic acid, used alone or as a mixture, is saturated, linear aliphatic and comprises 2 to 36 carbon atoms, especially 3 to 18 carbon atoms, or even 4 to 12 carbon atoms; or is aromatic and comprises 8 to 12 carbon atoms. It preferably comprises 2 to 4 COOH groups. Preferably, citric acid, aconitic acid, tartaric acid, 1,2,3-propane tricarboxylic acid, 1,2,3,4-butanetetracarboxylic acid, can be used alone or as a mixture preferably alone, and even more preferably citric acid alone. (b) Polycarboxylic acid esters Among the ester derivatives of the polycarboxylic acid, mention may be made of C 1 -C 4 alkyl mono-, di-, tri- or tetraesters, in particular the methyl, ethyl, isopropyl or n-methyl esters. butyl and more preferably the methyl or ethyl esters.

The preferred polycarboxylic acid esters are the methyl, ethyl, isopropyl or n-butyl esters and more preferably the methyl or ethyl esters of polyacids (2 to 4 COOH groups) which are saturated, linear and containing 2 to 36 carbon atoms, in particular 3 to 18 carbon atoms, or even 4 to 12 carbon atoms; or else aromatic acid and comprising 8 to 12 carbon atoms. Preferably, it is possible to use the methyl, ethyl, isopropyl or n-butyl esters and more preferably the ethyl or butyl esters of citric acid, aconitic acid, tartaric acid, 1,2,3- propane tricarboxylic, 1,2,3,4-butanetetracarboxylic acid, alone or in mixture and even better the ethyl or butyl esters of citric acid such as triethyl citrate, acetyltriethyl citrate, tributyl citrate and acetyl tributyl citrate. c) Polycarboxylic Acid Anhydride Among the acid anhydrides derived from the polycarboxylic acid, mention may be made of: a) mixed anhydrides with a carboxylic acid of 02-04, in particular acetic acid, propionic acid or butyric acid, preferably acetic acid; . b) cyclic anhydrides of polycarboxylic acids, such as phthalic anhydride, trimellitic anhydride, maleic anhydride, succinic anhydride, N, N, N ', N'-ethylenediamine tetraacetic acid dianhydride than.

Preferably, the polycarboxylic acid anhydride alone or as a mixture is chosen from maleic anhydride, succinic anhydride and more preferably maleic anhydride alone. d) Halides of Polycarboxylic Acid Among the acid halides derived from said polycarboxylic acids, there may be mentioned acid chlorides or bromides of said polycarboxylic acids, preferably polycarboxylic acid chlorides. Preferably, the acid halides, used alone or as a mixture, are the halides of aconitic acid, tartaric acid, 1,2,3-propane tricarboxylic acid, 1,2,3,4 -butanetetracarboxylic acid and preferably the chlorides of these acids. Said polycarboxylic acid or acids and / or their ester, anhydride or acid halide derivatives, used alone or as a mixture, preferably represent 5 to 40% by weight, more preferably 7 to 35% by weight, and more preferably 10 to 35% by weight. 30% by weight, of the total weight used in the synthesis of the cyclodextrin polycondensate. THERMOPLASTIC POLYOL POLYMERS Another constituent necessary for the preparation of the cyclodextrin polycondensates according to the invention is a thermoplastic polyol polymer. By "polyol polymer" is meant a polymer (of average molecular weight ranging from 1000 to 200,000 Daltons containing at least 2 hydroxyl functional groups.) The term "thermoplastic polyol polymer" means a polyol polymer which becomes fluid (softened) with heat. at a temperature between 100 and 250 ° C. Various types of thermoplastic polyol polymers may be used according to the invention: polyether polyols, polyester polyols, polycarbonate polyols, polyamide polyols, polyurethanes polyols, polyalkylene-polyols, polycaprolactonespolyols and polysaccharides Among the polyether polyols, mention may be made of polyoxyethylene glycols, polyoxypropylene glycols, block or random copolymers of ethylene and propylene oxides, block or statistical copolymers. oxides of ethylene and / or propylene with tetrahydrofuran, and more particularly polytetramethylene glycol Examples of polyol polyols include those obtained by polycondensation of di or tricarboxylic acids with polyols (di-, tri- or tetra-ools) such as, for example, poly (hexamethylene adipate) and the like. those obtained by polycondensation of hydroxy acids such as polyhydroxyalkanoates and especially polylactic acid, polyhydroxybutyrate (PH B) and polyhydrovybutyrate-valerate (PHBV). Among the polycarbonates-polyols, those prepared by reaction of diols (propane-1,3-diol, butane-1,4-diol, hexane-1,6-diol, 1,9-nonanediol, 2-methyloctane-1, , 8-diol, diethylene glycol, etc.) with diaryl carbonates such as diphenyl carbonate or with phosgene. Among the polyamide-polyols, mention will be made more particularly of those obtained by reacting a diamine and / or a polymeric diamine with a di or polycarboxylic acid and a hydroxy acid such as, for example, 12-hydroxystearic acid. Among the polyurethane polyols, mention may be made of those obtained by a polyaddition process consisting of reacting polyisocyanates, preferably diisocyanates, with diols and / or or polyols. Among the polycaprolactone polyols, polycaprolactone polyols obtained by polymerization of epsilon caprolactone with ring opening by polyols such as ethylene glycol, 1,2-propanediol, 1,3-propanediol, glycerol, trimethylolpropane Among the polyalkylene polyols, mention will be made of alcohol polyvinyl alcohol, the modified polyvinyl alcohol having an ethylene unit content of 4 to 15 mol% and polybutadiene diols. Among the polysaccharides, mention will be made especially of thermoplastic starches which are obtained by destructuring the native granule in the presence of a plasticizer under thermomechanical stresses; cellulose derivatives such as cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, methyl cellulose, ethyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, cellulose acetate, carboxymethylcellulose, alone or in admixture with alginates, gums such as guar gum, starches such as tapioca starch, modified starches such as starch octenyl succinate (E1450), oxidized starches (E .1404), crosslinked starches (E.1412 or 1413), stabilized starches (E.1420 or E1440), crosslinked / stabilized starches such as acetylated diamidon adipate (E.1422) or hydroxypropylated diamidon phosphate ( E.1442), sulphated polysaccharides such as carrageenans, aminopolysaccharides such as chitosan or chitin, oxidized polysaccharides such as those described in the application W02010 / 070235, FR2944967 and the application WO2011 / 161020, and more particularly starches, inulins, carrageenans, alginates and glucomannans. Polysaccharides are particularly preferred because they have a renewable origin, are available at high tonnage and at a low cost.

Preferably, among the polysaccharides, it is possible to use, alone or as a mixture, hydroxypropylcellulose, hydroxyethylcellulose and even more preferably hydroxypropylcellulose alone. Said thermoplastic polyol polymer (s) preferably represent 10 to 50% by weight, especially 15 to 45% by weight, and more preferably 17 to 40% by weight, of the total weight used in the synthesis of the cyclodextrin polycondensate. CYCLIC ANHYDRIDES OF POLYCARBOXYLIC ACID According to one particular form of the invention, for the preparation of the cyclodextrin polycondensates according to the invention, at least one cyclic anhydride of a polycarboxylic acid chosen to be different from the first anhydride of a polycarboxylic acid is also used. polycarboxylic acid mentioned above. The cyclic anhydride of an additional polycarboxylic acid may in particular correspond to one of the following formulas: ## STR3 ## in which the groups A and B are, independently of one another: a hydrogen atom, a saturated or unsaturated, linear, branched and / or cyclic, or aromatic aromatic carbon radical; comprising 1 to 16 carbon atoms, especially 2 to 10 carbon atoms, or even 4 to 8 carbon atoms, especially methyl or ethyl; or A and B taken together form a ring comprising in total 5 to 7, in particular 6 carbon atoms, saturated or unsaturated, or even aromatic. Preferably, A and B represent a hydrogen atom or together form an aromatic ring comprising a total of 6 carbon atoms. Among the cyclic anhydrides of polycarboxylic acids which may be used, mention may be made, alone or as a mixture, of phthalic anhydride, trimellitic anhydride, maleic anhydride and succinic anhydride. Preferably, maleic anhydride and succinic anhydride, and more preferably maleic anhydride alone, may be used alone or as a mixture. When said cyclic anhydride of a polycarboxylic acid is present among the ingredients used, it preferably represents 0.1 to 10% by weight, in particular 0.5 to 5% by weight, or even 0.7 to 4% by weight. , relative to the total weight used in the synthesis of the cyclodextrin polycondensate. ESTERIFICATION CATALYSTS According to one particular form of the invention, at least one esterification catalyst will be used for the preparation of the cyclodextrin polycondensates according to the invention.

The esterification catalyst may especially be chosen from dihydrogenphosphates, hydrogenphosphates, phosphates, hypophosphites, alkali metal phosphites, alkali metal salts of polyphosphoric acids, carbonates, bicarbonates, acetates, borates, alkali or alkaline-earth metal hydroxides, aliphatic amines and ammonia, optionally combined with an inorganic solid support such as alumina, silica gels, Al silicate, zeolites, titanium or zirconium oxides .

The esterification catalyst may also be chosen from sulphonic acids or titanates. Preferably, sodium hydrogen phosphate, sodium dihydrogenphosphate and sodium hypophosphite, and most preferably sodium dihydrogenphosphate, may be used.When said esterification catalyst is present among the ingredients used, it preferably represents from 0.degree. , 1 to 5% by weight, in particular 0.5 to 4% by weight, or even 0.5 to 3% by weight, relative to the total weight used in the synthesis of the cyclodextrin polycondensate NON-POLYMERIC POLYOLS According to a form In addition, for the preparation of the cyclodextrin polycondensates according to the invention, at least one non-polymeric polyol comprising 3 to 6 hydroxyl groups will be used, and it is of course possible to use a mixture of such polyols. be a linear or branched or cyclic, saturated or unsaturated, hydrocarbon-based compound comprising 3 to 18 carbon atoms, especially 3 to 12 or even 4 to 10 atoms; s, and 3 to 6 hydroxyl groups (OH), and may further comprise one or more oxygen atoms intercalated in the chain (ether function). Said polyol is preferably a saturated hydrocarbon compound, linear or branched, comprising 3 to 18 carbon atoms, especially 3 to 12 or even 4 to 10 carbon atoms, and 3 to 6 hydroxyl groups (OH). It may be chosen from, alone or as a mixture: triols, such as 1,2,4-butanetriol, 1,2,6-hexanetriol, trimethylolethane, trimethylolpropane or glycerol; tetraols, such as pentaerythritol (tetramethylolmethane), erythritol, diglycerol or ditrimethylolpropane; pentols such as xylitol; hexols such as sorbitol and mannitol; or dipentaerythritol or triglycerol. Preferably, the polyol is chosen from glycerol, pentaerythritol, diglycerol, sorbitol and their mixtures; and most preferably the polyol is glycerol alone. When said polyol comprising 3 to 6 hydroxyl groups is present among the ingredients used, it is preferably 1 to 30% by weight, especially 2 to 25% by weight, or even 10 to 20% by weight, relative to total weight used in the synthesis of the cyclodextrin polycondensate. . In a preferred embodiment of the invention, the ratio between the number of moles of polycarboxylic acid and the number of moles of the cyclodextrin preferably varies from 0.5 to 5, especially from 0.6 to 4, in particular from 0.7 to 3. It has been found that these proportions make it possible to obtain a cyclodextrin polycondensate which is advantageously insoluble in water and which moreover has both an adequate capacity for capturing and impregnating various ingredients. Preferably, the cyclodextrin polycondensate according to the invention has an acid number, expressed in mg of potassium hydroxide per g of polycondensate, greater than or equal to 20, in particular ranging from 20 to 250, and even better ranging from 40 at 180.

This acid number can easily be determined by those skilled in the art by conventional analytical methods. The amount of -COOH present is evaluated according to the number of milligrams of potassium hydroxide necessary to neutralize 1 g of cyclodextrin polycondensate, the dispersion being carried out in a mixture of solvents (1 part of water and 1 part absolute ethanol). Preferably, the cyclodextrin polycondensate according to the invention has a degree of swelling in water measured at 20 ° C., greater than or equal to 100%; especially ranging from 100 to 1000%, and even better ranging from 300 to 900%; This degree of swelling is measured as described below.

Protocol for Measuring the Swelling Rate: 2 g of polycondensate are suspended in 20 g of deionized water with gentle stirring for 24 hours at room temperature. It is centrifuged to separate the supernatant and then a dry extract is made on the centrifugate using a thermo-balance. The degree of swelling in% is obtained by making the ratio evaporated mass / dry mass x 100. The polycondensate according to the invention can be prepared by the esterification / polycondensation processes usually employed by those skilled in the art. By way of illustration, a general method of preparation consists in: - mixing one or more cyclodextrins, a polycarboxylic acid and / or one of its derivatives (esters, acid anhydrides or acid halides), at least one thermoplastic polyol polymer and optionally at least one cyclic anhydride of polycarboxylic acid chosen to be different from the preceding polycarboxylic acid anhydride and / or at least one esterification catalyst and / or at least one non-polymeric polyol comprising 3 to 6 hydroxyl groups - to heat the mixture preferably under an inert atmosphere, at a temperature ranging from 100 to 250 ° C preferably by eliminating as the water, the alcohol or the acid formed, and then - to cool the mixing at room temperature. It is also possible to carry out the reaction, in whole or in part, in an inert solvent such as xylene and / or under reduced pressure, to facilitate the removal of water, alcohol or acid form. Advantageously, no solvent is used.

Said method of preparation may further comprise a step of adding at least one antioxidant agent to the reaction medium, in particular at a concentration by weight ranging preferably from 0.01 to 2%, relative to the total weight used in the reaction medium. the synthesis of the cyclodextrin polycondensate, so as to limit any degradation associated with prolonged heating. The antioxidant may be selected from hindered phenols, aromatic secondary amines, organophosphorus compounds, sulfur compounds, lactones, bis-phenols and mixtures thereof.

Particularly preferred antioxidants include BHT, BHA, TBHQ, 1,3,5-trimethyl-2,4,6, tris (3,5-di-tertbutyl-4-hydroxybenzyl) benzene, and the like. , octadecy1-3,5, di-tertbuty1-4-hydroxycinnamate, tetrakis-methylene-3- (3,5-di-tertbutyl-4-hydroxy-phenyl) propionate methane, octadecy1-3- (3 2,5-di-tert-butyl-hydroquinone, 2,5-di-tert-butyl-4-hydroxyphenyl) propionate, 2,2-methyl-bis- (4-methyl-6-tertbutyl phenol), 2,2-methylene-bis- (4-Ethyl-6-tert-butyl phenol), 4,4-butylidene bis (6-tertbutyl-m-cresol), N, N-hexamethylene bis (3,5-di-tert-butyl-4-hydroxyhydrocinnamamide), pentaerythritol tetrakis (3- (3,5-di-tertbutyl-4-hydroxyphenyl) propionate), especially that marketed by CIBA under the name IRGANOX 1010; octadecyl 3- (3,5-di-tertbutyl-4-hydroxphenyl) propionate, especially that marketed by CIBA under the name IRGANOX 1076; 1,3,5-tris (3,5-di-tertbutyl-4-hydroxybenzyl) -1,3,5-triazine-2,4,6 (1H, 3H, 5H) trione, especially that marketed by Mayzo of Norcross , Ga under the name BNX 3114; di (stearyl) pentaerythritol diphosphite, tris (2,4-ditertbutylphenyl) phosphite, especially that marketed by CIBA under the name IRGAFOS 168; dilauryl thiodipropionate, in particular that marketed by CIBA under the name IRGANOX P5800; bis (2,4-ditertbutyl) pentaerythritol diphosphite, especially that marketed by CIBA under the name IRGAFOS 126; bis (2,4-bis) [2-phenylpropan-2-yl] phenyl) pentaerythritol diphosphite, triphenylphosphite, (2,4-ditertbutylphenyl) pentaerythritol diphosphite, especially that marketed by GE Specialty Chemicals under the name ULTRANOX 626; tris (nonylphenyl) phosphite, in particular that marketed by CIBA under the name IRGAFOS TNPP; the 1: 1 mixture of N, N-hexamethylenebis (3,5-di-tertbutyl-4-hydroxy-hydrocinnamamide) and tris (2,4-di-tertbutylphenyl) phosphate, in particular that marketed by CIBA under the name Irrganox B 1171 ; tetrakis (2,4-di-tert-butylphenyl) phosphite, in particular that marketed by CIBA under the name IRGAFOS P-EPQ; distearyl thiodipropionate especially that marketed by CIBA under the name IRGANOX PS802; 2,4-bis (octylthiomethyl) o-cresol, especially that marketed by CIBA under the name IRGANOX 1520; 4,6-bis (dodecylthiomethyl) o-cresol including that marketed by CIBA under the name IRGANOX 1726.

A particularly preferred method of preparation of the cyclodextrin polycondensates of the present invention is to mix at least one cyclodextrin, at least one polycarboxylic acid and / or one of its ester derivatives, acid anhydride or acid halide, at least a thermoplastic polyol polymer and optionally at least one cyclic anhydride of polycarboxylic acid chosen as different from the preceding polycarboxylic acid anhydride and / or optionally at least one esterification catalyst and / or optionally at least one non-polymeric polyol in a apparatus for bringing the mixture into a thermoplastic state by conjugating conditions of temperature and sufficient shear forces thus making the various components compatible. Preferably, an extruder such as, for example, the Clextral BC 21® twin-screw type or any other apparatus that can meet these criteria, which operates at a temperature ranging from 100 to 250 ° C., preferably from 110 to 200 ° C., will be used. The preferred method of preparation of the materials of the invention is to incorporate in one step all the ingredients in an extruder at a temperature ranging from 110 to 200 ° C, preferably from 120 to 190 ° C and more preferably from 150 to 150 ° C. 180 ° C. The residence time in an extruder preferably varies from 1 to 10 minutes, and even better from 1 to 5 minutes. Depending on the use for which the cyclodextrin polycondensate of the invention is intended, it may then be milled if necessary.

Another subject of the invention consists in the use of a cyclodextrin polycondensate as defined above as a capture agent for a substance or a mixture of substances likely to pollute the environment, such as gaseous pollutants (organic compounds volatiles), metal cations, oils and greases, polluting substances contained in drinking water, industrial water and aqueous effluents as well as in the surrounding volatile soils and odor molecules. Among the gaseous pollutants (VOCs), there may be mentioned chlorinated compounds such as, for example, chorobenzene, carbon tetrachloride and vinyl monochloride. Among the metal cations, mention may be made more particularly of lead, cadmium, mercury, iron and copper cations.

Among the oils and fats, these are of mineral, animal, plant, marine or synthetic origin. These include complex mixtures of petroleum hydrocarbons consisting of fuels, lubricants and brake fluids as well as additives added in small quantities to improve the technical properties such as antiknock products, antioxidants, antifreezes, lead substitutes and dyes. Among the pollutant substances contained in drinking water, industrial water and aqueous effluents, mention may be made of the natural pollutants that are malodorous in drinking water, for example (-) geosmin and (+) 2-methyl isoborneol. Among the polluting substances contained in the sols, chlorophenols (tri and pentachlorophenol) and polycyclic aromatic hydrocarbons (naphthalene, phenanthrene) are particularly suitable. The cyclodextrin polycondensates of the invention by their chemical nature and their super polymeric network. In particular, the absorbent has a high capacity to absorb fatty substances such as vegetable oils, mineral oils such as hydrocarbons such as isohexadecane, liquid paraffin, terpenes, squalene, isoparaffins, ceresin and petrolatum. hydrogenated oils, silicone oils, saturated or unsaturated fatty acids (such as oleic acid), fatty acid esters, fatty alcohols (such as myristyl alcohol, cetyl alcohol, stearyl alcohol, myricyl alcohol), butters, wax-esters, or a mixture thereof. The cyclodextrin polycondensates make it possible, in particular, to capture fats, soils, greasy wastes that may be produced during the manufacture or consumption of many consumer products, in particular products from the food industry, household cleaning products. such as laundry detergents, detergent products for textiles such as stain removers, floor cleaning and / or care products, cosmetic cleaning products such as make-up removers. Another object of the invention is the use of a cyclodextrin polycondensate as defined above as a capture and protection agent for a substance or a mixture of substances liable to deteriorate under the influence of atmospheric agents (moisture, heat, oxygen, light, etc.) or in contact with one or more ingredients in a composition. Among these so-called particularly sensitive, fragile or unstable substances, there may be mentioned perfumes (perfume ingredients) and flavorings, vitamins, hormones and dyes. Another subject of the invention consists of the non-therapeutic cosmetic use of a cyclodextrin polycondensate as defined above as a capture agent for a substance or a mixture of substances capable of generating, for example, reaction reactions. discomfort on a keratin material and in particular human. The substances capable of generating discomfort reactions on a particularly human keratinous material are chosen in particular from (i) malodorous molecules, in particular body molecules, (ii) the constituents of human sweat; (iii) the constituents of sebum. Among the substances likely to generate discomfort with regard to keratinous and in particular human materials, mention may be made of the malodorous molecules, in particular the body odors produced by sweat and the bacteria which develop during its evolution. Among the malodorous body molecules, mention may be made of: a) saturated or unsaturated and / or optionally substituted 02-020 fatty acids, linear or branched, such as those of formula (1) below: R1-C (O) -OH (1) in which R1 represents i) a linear or branched (C1-C20) alkyl group, optionally substituted preferably by at least one hydroxyl group; ii) a linear or branched (C2-C20) alkenyl group, optionally Preferably substituted by at least one hydroxy group; particularly the alkyl or alkenyl group contains from 2 to 14 carbon atoms.

Among the malodorous body molecules, mention may in particular be made of acetic acid, 2-propenoic acid, propanoic acid, propionic acid, 2-methylpropanoic acid, 2-methylpropenoic acid, 2-butenoic acid, 2-methyl-2-butenoic acid, 3-methyl-2-butenoic acid, butanoic acid, 2-methylbutanoic acid, 3-methylbutanoic acid, 3- hydroxybutanoic acid, 3-hydroxy-3-methylbutanoic acid, 2-methylbutyric acid, isovaleric acid 2-pentenoic acid, 2-methyl-2-pentenoic acid, 3-methyl-2-acid pentenoic acid, pentanoic acid, 2-methylpentanoic acid, 3-methylpentanoic acid, 3-hydroxypentanoic acid, 3-hydroxy-3-methylpentanoic acid, 3-methylhexanoic acid, acid 3-hydroxy-3-methylhexanoic acid hexandic acid, (E) -3-methyl-2-hexenoic acid, 2-heptenoic acid, 2-methyl-2-heptenoic acid, acid 3-methyl-2-heptenoic, the aci heptanoic acid, 2-methylheptanoic acid, 3-methylheptanoic acid, 3-hydroxyheptanoic acid, 3-hydroxy-3-methylheptanoic acid, 2-octenoic acid, 2-methyl-2-acid -octoic acid, 3-methyl-2-octenoic acid, octanoic acid, 2-methyloctanoic acid, 3-methyloctanoic acid, 3-hydroxyoctanoic acid, 3-hydroxy-3-methyloctanoic acid , nonandic acid, 2-nonenoic acid, 2-methyl-2-nonenoic acid, 3-methyl-2-nonenoic acid, nonanoic acid, 2-methylnonanoic acid, 3-methylnonanoic acid, 3-hydroxynonanoic acid, 3-hydroxy-3-methyl-nonanoic acid, 2-decenoic acid, 2-methyl-2-decenoic acid, 3-methyl-2-acid decenoic acid, 2-methyldecanoic acid, 3-methyl-decanoic acid, 3-hydroxydecanoic acid, 3-hydroxy-3-methyldecanoic acid, 10-hydroxydecanoic acid, 2-undecenoic acid, 2-methyl-2-undecenoic acid ics, 3-methyl-2-undecenoic acid, undecanoic acid, 2-methylundecanoic acid, 3-methylundecanoic acid, 3-hydroxyundecanoic acid, 3-hydroxy-3-methylundecanoic acid, dodecanoic acid, 2-hydroxydodecanoic acid, tridecanoic acid, 2-hydroxydodecanoic acid, tridecanoic acid.

Particularly the odorous fatty acids are chosen from propionic acid, 3-methyl-2-hexenoic acid, isovaleric acid, 2-methylbutyric acid, hexanoic acid, octanoic acid and nonanoic acid. , decanoic acid, dodecanoic acid, b) mercaptoalkanols such as those of formula (2) below: HS-R2-OH (2) in which R2 represents a linear or branched (C1-C10) alkylene group, preferably in (Cl-06).

Especially the odorant mercaptoalkanol molecules are chosen from 3-methyl-3-sulfanylhexan-1-ol, 3-sulfanylhexan-1-ol, 2-methyl-3-sulfanylbutan-1-ol and 3-sulfanylpentan-1. ol, 3-sulfanylbutan-1-ol, 3-methyl-3-sulfanylpentan-1-ol and 3-methyl-3-sulfanylbutan-1-ol. c) Steroids such as those selected from androst-16-ene-steroids including 5a-androst-16-en-3-one and 5a-androst-16-en-3a-ol, androst-2-en-17 -one, androsta-4,16-dien-3-one, androsta-5,16-dien-3-ol, androst-4-en-3,17-dione, androstan-3-one, DHEA (dehydroepiandrosterone), testosterone, DHT (dehydrotestosterone), and 320-hydroxy-5-androstan-17-one. d) Sulphonated steroids, in particular sulphate derivatives of the compounds defined in the preceding paragraph c). Particularly the odoriferous sulfoconjugated steroidal compounds are preferentially selected from the sulphates derived from dehydroepiandrosterone (DHEA), androsterone and testosterone, 5a-androst-16-en-3a-sulfate, androsta-5,16- dien-3 [3-sulfate, dehydroepiandrosterone sulfate, testosterone sulfate, 5α-dehydrotestosterone sulfate, 5α-androstan-17-α-3α-sulfate. e) Precursors of odorant molecules selected from conjugated fatty amino acids such as the conjugated product of glutamine with (E) -3-methyl-2-hexenoic acid (a) and the conjugated product of glutamine with 3-hydroxy-3-methylhexanoic acid (b) The following compounds may also be mentioned: N 2 - [3-methylhex-2-enoyl] glutamine, N 2 - [3-methyl-3-hydroxyhexanoyl] glutamine, N 2 acetylglutamine, N2- [prop-2-enoyl] glutamine, N2- [2-methylprop-2-enoyl] glutamine, N2-propanoylglutamine, N2- [2-methylpropanoyl] glutamine, N2- [but-2-enoyl] glutamine N2- [2-methylbut-2-enoyl] glutamine, N2-butanoyl-glutamine, N2- [2-methylbutanoyl] glutamine, N2- [3-methylbutanoyl] glutamine, N2- [3-hydroxybutanoyl] glutamine, N2- [ 3-hydroxy-3-methylbutanoyl] glutamine, N 2 - [pent-2-enyl] glutamine, N 2 - [2-methylpent-2-enoyl] glutamine, N 2 -pentanoyl-glutamine, N 2 - [2-methylpentanoyl] glutamine, N 2 - [3-methylpentanoyl] glutamine, N 2 - [3-hydroxypentanoyl] glutamine, N 2 - [3-hydroxy-3-methylpent anoyl] glutamine, N2- [hex-2-enyl] glutamine, N2- [2-methylhex-2-enoyl] glutamine, N2-hexanoyl-glutamine, N2- [2-methylhexanoyl] glutamine, N2- [3-methylhexanoyl] glutamine, N2- [3-hydroxyhexanoyl] glutamine, N2- [hept-2-enyl] glutamine, N2- [2-methylhept-2-enoyl] glutamine, N2-heptanoylglutamine, N2- [2-methylheptanoyl] -glutamine, N2 - [3-methylheptanoyl] glutamine, N 2 - [3-hydroxyheptanoyl] glutamine N 2 - [3-hydroxy-3-methylheptanoyl] glutamine, N 2- [oct-2-enyl] glutamine, N 2 - [2-methyloct-2 -enoyl] glutamine, N2-octanoylglutamine, N2- [2-methyloctanoyl] -glutamine, N2- [3-methyloctanoyl] glutamine, N2- [3-hydroxyoctanoyl] glutamine, N2- [3-hydroxy-3-methyloctanoyl] glutamine, N2- [non-2-enyl] glutamine, N2- [2-methylnon-2-enyl] glutamine, N2-nonanoylglutamine, N2- [2-methylnonanoyl] -glutamine, N2- [3-methylnonanoyl] glutamine, N2- [ 3-hydroxynonanoyl] glutamine, N2- [3-hydroxy-3-methylnonanoyl] glutamine, N2- [dec-2-enoyl] glutamine, N2- [2-methyldec-2-enoyl] glutamine, N2-decanoylglutamine, N2- [2-methyldecanoyl] -glutamine, N2- [3-methyldecanoyl] glutamine, N2- [3-hydroxydecanoyl] glutamine, N2- [3-hydroxy-3-methyldecanoyl] glutamine, N2- [undec-2-enoyl] glutamine, N2- [2-methylundec-2-enyl] glutamine, N2-undecanoylglutamine, N2- [2-methyl-undecanoyl] glutamine, N2- [3-methylundecanoyl] glutamine, N2- [3-hydroxy-undecanoyl] glutamine, N2- [3-hydroxy-3-methylundecanoyl] glutamine, N2- [dodec-2-enyl] glutamine, N2- [2-methyldodec-2-enoyl] glutamine, N2-dodecanoyl-glutamine, N2- [2-methyldodecanoyl] glutamine, N2- [3-methyldodecanoyl] -glutamine, N2- [3-hydroxydodecanoyl] glutamine, and N2- [3-hydroxy-3-methyldodecanoyl] glutamine and Na-hexanoyl glutamine. f) esters of fatty acids such as the acid esters of formula (1) as defined above, preferably the esters of formula (3) below: R1-C (O) -OR'1 (3) in which : R1 is as defined previously; and R'1 represents i) a linear or branched (C1-C20) alkyl group, optionally substituted preferably by at least one hydroxyl group, ii) a linear or branched (C2-C20) alkenyl group, preferably substituted preferably by at least one hydroxy group; According to a particular form, R'1 contains from 1 to 14 carbon atoms, and more particularly R'1 represents a linear or branched (C1-C6) alkyl group such as methyl. In particular, mention may be made of linear or branched alkyl (C1-C6) esters and in particular the methyl ester of 3-hydroxy-3-methylhexanoic acid, 3-hydroxy-4-methyl-octanoic acid, (E) -3- methyl-2-hexenoic, 3-hydroxyhexanoic and 3-hydroxyoctanoic. Mention may also be made of linear or branched (C 1 -C 6) alkyl esters and in particular the methyl esters of the following acids: acetic acid, 2-propenoic acid, propanoic acid, 2-methylpropanoic acid, 2-methylpropenoic acid, acid 2 2-Methyl-2-butenoic acid, 3-methyl-2-butenoic acid, butanoic acid, 2-methylbutanoic acid, 3-methylbutanoic acid, 3-hydroxybutanoic acid, 3-hydroxy-3-methylbutanoic acid, 2-butenoic acid - Pentenoic, 2-methyl-2-pentenoic acid, 3-methyl-2-pentenoic acid, pentanoic acid, 2-methylpentanoic acid, 3-methylpentanoic acid, 3-hydroxypentanoic acid, 3-hydroxy-3-methylpentanoic acid, 2-acid heptenoic acid, 2-methyl-2-heptenoic acid, 3-methyl-2-heptenoic acid, heptanoic acid, 2-methylheptanoic acid, 3-methylheptanoic acid, 3-hydroxyheptanoic acid, 3-hydroxy-3-methyl-heptanoic acid, 2-octenoic acid, 2-methyl acid 1-2-octenoic acid, 3-methyl-2-octenoic acid, octanoic acid, 2-methyloctanoic acid, 3-methyloctanoic acid, 3-hydroxyoctanoic acid, 3-hydroxy-3-methyloctanoic acid, 2- nonenoic acid, 2- methyl-2-nonenoic acid, 3-methyl-2-nonenoic acid, nonanoic acid, 2-methylnonanoic acid, 3-methylnonanoic acid, 3-hydroxynonanoic acid, 3-hydroxy-3-methyl-nonanoic acid, 2-decenoic acid, acid 2-methyl-2-decenoic acid, 3-methyl-2-decenoic acid, decanoic acid, 2-methyldecanoic acid, 3-methyl-decanoic acid, 3-hydroxydecanoic acid, 3-hydroxy-3-methyldecanoic acid, 10-hydroxydecanoic acid 2-undecenoic acid, 2-methyl-2-undecenoic acid, 3-methyl-2-undecenoic acid, undecanoic acid, 2-methylundecanoic acid, 3-methylundecanoic acid, 3-hydroxyundecanoic acid, 3-hydroxy-3-methylundecanoic acid , dodecanoic acid, 2-hydroxydodecanoic acid, t-acid ridecanoic, 2-hydroxydodecanoic acid, or tridecanoic acid. g) The conjugated products of 3-methyl-3-sulfanylhexan-1-ol and in particular the compounds of formula (4) below: R4-X2-C (X1) -ALK-X'2-C (X'1) In which: R4 and R'4, which may be identical or different, represent a hydrogen atom branched, or (C2-C8) alkenyl, linear or branched, such as methyl, optionally substituted by a hydroxy group, preferably R4 represents a hydrogen atom and R'4 represents a (C1-C6) alkyl group optionally substituted by a hydroxy, ALK and ALK 'group, which may be identical or different, represent a linear or branched (CiC8) alkylene group, optionally substituted with a group -X2-R4, with R4; X1 and X2, which may be identical or different, are as defined previously, preferably X1 = X2 = O; X'1 and X'2, and X "2, which are identical or different, are as defined for X1 and X2 respectively, preferably X'2 = X" 2 = NH and / where X'1 = O.

Particularly the odorous compounds of this class are chosen from the following compounds (c) S- (1-hydroxy-3-methylhexan-3-yl) -cysteinylglycine, S- (1-hydroxy-2-methylhexan-3-yl) -cysteinylglycine, S- (1-hydroxy-2-methylbutan-3-yl) -cysteinylglycine, S- (1-hydroxy-pentan-3-yl) -cysteinylglycine, S- (1-hydroxy-butan-3-yl) -cysteinylglycine, S- ( 1-hydroxy-3-methyl-pentan-3-yl) cysteinylglycine, S- (1-hydroxy-3-methyl-butan-3-yl) -cysteinylglycine, S- (1-hydroxy-hexan-3-yl) -cysteinylglycine, and S- (1-hydroxy-2-methylhexan-3-yl) -cysteinylglycine. h) ketone compounds such as 6,10-dimethyl-5,9-undecadien-2-one, tridecanone i) alkanols such as isopentanol, 1-decanol. More particularly, the odorant molecules that can be efficiently captured by the cyclodextrin polycondensates of the invention are chosen from 3-methyl-2-hexenoic acid, octanoic acid, nonanoic acid, decanoic acid, 6,10-dimethyl-5,9-undecadien-2-one, tridecanone, isopentanol, 1-decanol. Among the substances likely to generate discomfort with regard to keratin materials, mention may be made of the sweat (eccrine or apocrine) secreted by the sweat glands during the transpiration phenomenon.

Sweat contains mainly water. It also contains minerals, in addition to lactate which is an ionized form of lactic acid and urea.

The high water-absorbing capacity of the cyclodextrin polycondensates of the invention makes it possible to effectively capture the constituents of sweat when they are applied to keratin materials. An object of the invention therefore consists in a process for the cosmetic treatment of human perspiration and / or body odors consisting in applying to the surface of a human keratin material a composition comprising, in a physiologically acceptable medium, at least one cyclodextrin polycondensate. as defined in one previously.

Among the substances likely to generate discomfort with regard to keratin materials, mention may be made of the excess of sebum produced by the sebaceous glands in oily skin or on persons with a tendency to oily hair. The human sebum generally comprises in its composition lipids comprising squalene (about 15%), ester waxes (about 25%), cholesterol esters (about 2%), triglycerides (about 57%) and cholesterol ( About 1%). The high lipid-absorbing capacity of the cyclodextrin polycondensates of the invention makes it possible to effectively capture the excess of sebum when they are applied to the surface of the skin, hair or scalp and to treat oily skin, hair fat against the seborea and the appearance of fatty dandruff and to prevent the resulting cutaneous or capillary disorders.

Another subject of the invention therefore consists of a non-therapeutic cosmetic process for the care and / or the cleaning of a fat or oily human keratinous material, comprising at least one stage of topical application to said keratinous material of a composition comprising in a physiologically acceptable medium at least one cyclodextrin polycondensate as defined in any one of the preceding claims. BENEFICIAL AGENTS The cyclodextrin polycondensates according to the invention may also be used for trapping at least one beneficial agent, as described above. These beneficial agents are chosen from: a) Fatty substances Fatty substances are commonly used in the formulation of pharmaceutical, cosmetic and / or agri-food compositions. They may be chosen from the group comprising (i) natural oils of plant, animal or marine origin such as olive oil, sesame oil, argan oil, palm oil, soybean oil, pastel oil, babassu oil, aloe vera, avocado oil, allantoin, bisabol, grapeseed oil, olive oil apricot, wheat germ oil, almond oil, peanut oil, macadamia nut oil, sea buckthorn oil, evening primrose oil, borage, ginger oil, geraniol, jujube oil, mink oil, lanolin (ii) synthetic oils, (iii) mineral oils such as isohexadecane, para-isoparaffin, ceresin , petroleum jelly, (iv) hydrogenated oils, (v) silicone oils, (vi) hydrocarbon compounds such as liquid paraffin, (vii) terpenes, (viii) squalene, (ix) saturated fatty acids or unsaturated such as myristic acid (x), acid esters fatty, (xi) waxes beeswax, jojoba oil which is in fact a liquid wax, wax-esters, (xii) fatty alcohols (such as myristyl alcohol, cetyl alcohol, stearyl alcohol, myricyl alcohol (xiii) butters such as shea butter or cocoa butter, (xiv) or a mixture thereof. One of the applications that can be envisaged according to the invention is the vectorization of fatty substances for cosmetic use or for food use or for cosmetic food use, such as nutritional supplements. b) Aromatizing substances and flavor enhancers One of the applications that can be envisaged according to the invention is the vectorization of flavoring substances and / or flavor enhancers for food use or for use as food supplements such as nutritional supplements. 1) Aromatizing substances Among the flavoring substances that may be mentioned are those chosen: (i) from those indicated in the official list drawn up by the Council of Europe in the work 'Aromatizing substances and natural sources of flavoring substances vol 1 - 4th edition - 1992- Maisonneuve ". (ii) by those indicated in the official FEMA / GRAS lists published by the Food and Drug Administration (FDA). 2) Flavor enhancers The European Union defines flavor enhancers in the list of food additives by an E number. They are numbered from E620 (glutamic acid) to E641 (L-leucine). Among the flavor enhancers are: i) glutamates such as glutamic acid (E620), E621 monosodium glutamate (E621), monopotassium glutamate (E622), calcium diglutamate (E623), ammonium glutamate (E624), magnesium diiglutamate (E625); (ii) guanylates such as guanylic acid or guanisine monophosphate (E626), E627 disodium guanylate (E627), dipotassic guanylate (E628), calcium guanylate (E629); (iii) inosinates such as inosinic acid (E630), disodium inosinate (E631), dipotassic inosinate (E632), calcium inosinate (E633); Calcium 5'-ribonucleotide (E634), disodium 5'-ribonucleotide (E635), maltol E636, ethyl-maltol (E637), glycine (E640), L-Leucine (E641) can also be mentioned. .

We can also mention the following additives considered as enhancers: lactic acid (acidifier) (E270), sweeteners such as acesulfame-K (E950), aspartame (E951), thaumatin (E957), neohesperidin dihydrochalcone (E959), neotame (E961), erythritol (E968).

C) Perfuming substances "Perfuming substance" means any perfume or aroma likely to give off a pleasant odor.

Fragrances are compositions containing in particular the raw materials described in S. Arctander, Perfume and Flavor Chemicals (Montclair, NJ, 1969), in S. Arctander, Perfume and Flavor Materials of Natural Origin (Elizabeth, NJ, 1960) and in " Flavor and Fragrance Materials - 1991 ", Allured Publishing Co. VHheaton, III. It can also be natural products, such as essential oils, absolutes, resinoids, resins, concretes, and / or synthetic products (terpene or sesquiterpenic hydrocarbons, alcohols, phenols, aldehydes, ketones, ethers, acids esters, nitriles, peroxides, saturated or unsaturated, aliphatic or cyclic). According to the definition given in International Standard ISO 9235 and adopted by the European Pharmacopoeia Commission, an essential oil is a fragrant product generally of complex composition, obtained from a botanically defined plant raw material, either by steam distillation of water, either by dry distillation or by a suitable mechanical process without heating (cold expression). The essential oil is most often separated from the aqueous phase by a physical process that does not entail a significant change in the composition. Among the essential oils that may be used according to the invention, mention may be made of those obtained from plants belonging to the following botanical families: Abietaceous or Pinaceae: conifers; Amaryllidaceae; Anacardiaceae; Anonaceae: ylang; Apiaceae (eg umbelliferae): dill, angelica, coriander, sea fennel, carrot, parsley; Aracées; Aristolochiaceae; Asteraceae: achiliate, mugwort, chamomile, helichrysum; Betulaceae; Brassicaceae; Burseraceae: incense; Caryophyllaceae; Canellaceae; Caesalpiniaceae: copaffera (copahu); Chenopodaceae; Cistaceae: rockrose; Cyperaceae; Dipterocarpaceae; Ericaceae: wintergreen; Euphorbiaceae; Fabaceae; Geraniaceae: geranium; Guttifers; Hamamelidaceae; Hernandiaceae; Hypericaceae: St. John's wort; Iridaceae; Juglandaceae; Lamiaceae: thyme, oregano, shrimps, savory, basil, marjoram, mint, patchouli, lavender, sage, catnip, rosemary, hyssop, lemon balm, rosemary; Lauraceae: ravensara, laurel, rosewood, cinnamon, litsea; Liliaceae: garlic; Magnoliaceae: magnolia; Malvaceae; Meliaceae; Monimiaceae; Moraceae: hemp, hops; Myricaceae; Mysristicaceae: nutmeg; Myrtaceae: eucalyptus, tea tree, niaouli, cajeput, backousia, clove, myrtle; Oleaceae; Piperaceae: pepper; Pitosporaceae; Poaceae: lemongrass, lemongrass, vetiver; Polygonaceae; Renonculaceae; Rosaceae: roses; Rubiaceae; Rutaceae: all citrus; Salicaceae; Santalaceae: sandalwood; Saxifragaceae; Schisandracées; Styracaceae: benzoin; Thymelaceae: agarwood; Tilliaceae; Valerianaceae: valerian, nard; Verbenaceae: lantana, verbena; Violaceae; Zingiberaceae: galangal, turmeric, cardamom, ginger; Zygophyllaceae.

We can also mention the essential oils extracted from flowers (lily, lavender, rose, jasmine, ylang-ylang, neroli), stems and leaves (patchouli, geranium, petit-grain), fruits (coriander, anise, cumin, juniper), fruit peel (bergamot, lemon, orange), roots (angelica, celery, cardamom, iris, acore, ginger), wood (pine wood, sandalwood, guaiac, rose cedar, camphor), d herbs and grasses (tarragon, rosemary, basil, lemon grass, sage, thyme), needles and branches (spruce, fir, pine, dwarf pine), resins and balms (galbanum, elemi, benzoin, myrrh , oliban, opopanax).

Examples of perfuming substances are in particular: geraniol, geranyl acetate, farnesol, borneol, bornyl acetate, linalool, linalyl acetate, linalyl propionate, linalyl butyrate, tetrahydrolinalol citronellol, citronellyl acetate, citronellyl formate, citronellyl propionate, dihydromyrcenol, dihydromyrcenyl acetate, tetrahydromyrcenol, terpineol, terpinyl acetate, nopol, nopyl acetate, glycerol, benzyl alcohol, benzyl acetate, benzyl salicylate, amyl salicylate, dimethylbenzyl-carbinol, trichloromethylphenylcarbinyl acetate, p-tert-butylcyclohexyl acetate, isononyl acetate, vettiveryl acetate, vetiferol, alpha-hexylcinnamaldehyde, 2 -methyl-3- (ptert-butylphenyl) propanal, the 2-methyl-3- (p-isopropylphenyl) propanal, 3- (p-tert-butylphenyl) propanal, 2,4-dimethylcyclohex-3-enylcarboxaldehyde, tricyclodecenyl acetate, tricyclodecenyl propionate, 4- (4-hydroxy-4-methylpentyl) -3-cyclohexenecarboxaldehyde, 4- (4-methyl-3-pentenyl) -3-cyclohexenecarboxaldehyde, 4-acetoxy-3-pentyl-tetrahydropyran, 3-carboxymethyl; 2-pentylcyclopentane, 2-n-4-heptylcyclopentanone, 3-methyl-2-pentyl-2-cyclopentenone, menthone, carvone, tagetone, geranyl acetone, n-decanal, n-dodecanal, 9-decheno-1, phenoxyethyl isobutyrate, phenylacetaldehyde dimethylacetal, phenylacetaldehyde diethylacetal, geranonitrile, citronellonitrile, cyroyl acetate, 3-isocamphylcyclohexanol, cedaryl methyl ether, isolongifolanone, beetroepinonitrile, hawthorn, heliotropine, coumarin, eugenol, vanillin, diphenyl ether, citral, citronellal, hydroxycitronellal, damascone, ionones, methylionones, isomethylionones, solanone, irones, cis-3-hexenol and its esters, musks-indanes, musks-tetralines, musks-isochromanes, macrocyclic ketones, musks-macrolactones, aliphatic musks, ethylene brassylate, rose essence and mixtures thereof. Another of the possible applications is for example the vectorization of perfuming substances for the manufacture of perfumery products (perfumes, eau de toilette, eau de parfum, aftershave lotions), cosmetic products for the care and / or cleaning of materials. keratinous, in particular human, make-up products, cleaning and / or laundry care products, household cleaning products, in the manufacture of clothing, footwear, insoles and their cleaning products, in products for animal hygiene, such as bedding, inks, products from the paper industry, baby care products (wipes, diapers), intimate hygiene products (tampons wipes, towels), in sanitary products, in agri-food products and from agriculture. d) Active Pharmaceutical Ingredients The term "active pharmaceutical ingredient" means a molecule that has a curative and / or prophylactic therapeutic effect. For example, it may be any molecule having therapeutic properties involved in the composition of a drug. For example, nonsteroidal anti-inflammatory drugs (NSAIDs), abortives, alpha-blockers, alpha2-agonists, aminoglycosides, analgesics, anesthetics, local anesthetics, anorectics, 5HT3 antagonists, Antagonists may be mentioned. Calcium, Antiangorous, antiarrhythmics, antibiotics, anticholinergics, anticholinesterase agents, antidiabetics, antidiarrheals, antidepressants, antihistamines, antihypertensives, antimycotics, antimalarials, antiparasitics, antipsychotics, antipyretics, antiretrovirals, antiseptics, antispasmodics, antivirals, antiemetics, anti-epileptics, anxiolytics, barbiturates, benzodiazepines, bronchodilators, beta-blockers, chemotherapeutic agents, borticosteroids, diuretics, loop diuretics , osmotic biuretics, depressants, glucocorticoids, hallucinogens, hypnotics, immunosuppressants, carbonic anhydrase inhibitors, neuraminidase inhibitors, proton pump inhibitors, TNF inhibitors, selective serotonin reuptake inhibitors, inhibitors of HMG-CoA reductase (or statins), keratolytics, laxatives, mineralocorticoids, muscle relaxants, neuroleptics, psychotropics, spasmolytics, stimulants, sedatives, tocolytics or vasodilators. This list is not exhaustive and extends to any therapeutic active ingredient known to those skilled in the art. e) Cosmetic active ingredients The term "cosmetic active ingredient" is understood to mean any molecule that has the effect of hygiene, skincare, make-up, coloring contributing to the improvement, well-being and / or embellishment of the skin. aspect of the human keratin material to which said composition is applied.

The cosmetic active ingredients can therefore be chosen from all substances that meet this definition and that are present in products such as (i) hygiene products: make-up removers, dentifrices, deodorants, antiperspirants, shower gels, bath preparations ( bubble bath, 30 bath oil, bath salts), intimate cleansing gels, soaps, shampoos, (ii) skincare products: wrinkle cream, day cream, night cream, moisturizer, floral water, scrub, milk, beauty mask, lip balm, tonic 35 iii) skincare and / or hair treatment products such as hair styling products, dyeing products, permanent products, conditioning products: hair conditioner, hair straightener smoothing; gel, oil, lacquer, mask, (iv) makeup products: anti-ring, liner (eyeliner), makeup, foundation, kohl, mascara, powder, skin whitening product, lipstick, nail polish , (v) perfumes: eau de Cologne, eau de toilette, perfume, (vi) sun products: self-tanning products, creams, milks, oils, after-sun and solar sticks or lotions, (vii) products for shaving and depilatories: aftershave, depilatory cream, mousse and shaving gels, Among the active ingredients for the care of human keratin materials such as skin, lips, scalp, hair, eyelashes or nails, it is possible to for example: - vitamins and their derivatives or precursors, alone or in mixtures, - anti-oxidants; cleaning agents; hair dyes, conditioning agents, agents for straightening and / or smoothing and / or shaping of hair, anti-radical agents; anti-pollutants, photoprotective agents such as organic filters, inorganic UV filters, self-tanning agents, anti-glycation agents; soothing agents, depilatory agents, deodorant agents, antiperspirant agents, essential oils, NO-synthase inhibitors; agents stimulating the synthesis of dermal or epidermal macromolecules and / or preventing their degradation; Agents stimulating the proliferation of fibroblasts; agents stimulating the proliferation of keratinocytes; the skin-relaxing agents, the cooling agents, the tensing agents, the matting agents, the depigmenting agents, the pro-pigmenting agents, the keratolytic agents, the desquamating agents; moisturizing agents, anti-microbial agents, slimming agents, agents acting on the energetic metabolism of cells, insect repellents, P-substance antagonists or CRGP antagonists. - anti-hair loss agents - anti-wrinkle agents, - anti-aging agents. The cyclodextrin polycondensates according to the invention can be used very advantageously in a cosmetic or dermatological composition, which moreover comprises a physiologically acceptable medium. The amount of cyclodextrin polycondensate present in the compositions will of course depend on the type of composition and the desired properties and may vary within a very wide range, generally from 0.1 to 100% by weight, preferably from 0.5 to 95% by weight, especially from 1 to 70% by weight, or even from 1.5 to 50% by weight, and more preferably from 2 to 20% by weight, relative to the total weight of the composition. The composition may then comprise, according to the intended application, the usual constituents for this type of composition. The composition according to the invention may advantageously comprise at least one fatty phase which may comprise at least one compound chosen from oils, waxes and / or solvents of mineral, animal, vegetable or synthetic origin, carbonaceous, hydrocarbon, fluorinated and / or silicones, which are volatile or non-volatile, alone or as a mixture, provided that they form a homogeneous and stable mixture and are compatible with the intended use.

By "volatile" is meant in the sense of the invention, any compound capable of evaporating in contact with keratin materials in less than one hour, at room temperature (25 ° C) and atmospheric pressure (1 atm). In particular, this volatile compound has a non-zero vapor pressure, at ambient temperature and atmospheric pressure, in particular ranging from 0.13 Pa to 40 000 Pa (10-3 to 300 mmHg), in particular ranging from 1.3 Pa. at 13,000 Pa (0.01 to 100 mmHg), and more particularly ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mmHg).

By contrast, the term "non-volatile" means a compound remaining on human keratin materials at ambient temperature and atmospheric pressure, at least one hour and having in particular a vapor pressure of less than 10 -3 mm Hg (0.13 Pa). .

The fatty phase may represent from 1 to 99% by weight of the composition, in particular from 5 to 95% by weight, in particular from 10 to 90% by weight, or even from 20 to 85% by weight, of the total weight of the composition. . The composition may further include other ingredients commonly used in cosmetic compositions. Such ingredients may be chosen from antioxidants, perfumes, essential oils, preservatives, cosmetic active agents, moisturizers, vitamins, ceramides, sunscreens, surfactants, spreading agents, wetting agents, dispersing agents, antifoams, neutralizers, stabilizers, polymers and in particular liposoluble film-forming polymers, and mixtures thereof. Of course, those skilled in the art will take care to choose this or these optional additional compounds, and / or their quantity, in such a way that the advantageous properties of the composition for use according to the invention are not, or not substantially, , altered by the addition envisaged. The compositions according to the invention may be in any acceptable and customary form for a cosmetic or dermatological composition. Those skilled in the art may choose the appropriate dosage form, as well as its method of preparation, on the basis of its general knowledge, taking into account, on the one hand, the nature of the constituents used, in particular their solubility in the support, and on the other hand the application envisaged for the composition. The invention is illustrated in more detail in the following examples. Preparation Examples The information relating to the different raw materials used in the examples which follow is summarized in the following table. INCI name Supplier Non-commercial p-cyclodextrin VVACKER CAVAMAX W7 FOOD GRADE® a-cyclodextrin VVACKER CAVAMAX VV6 FOOD GRADE® y-cyclodextrin VVACKER CAVAMAX VV8 PHARMA GRADE® Hydroxypropylcellulose 80K ASH LAND KLUCELO Maleic anhydride ALDRICH M625® Citric acid DSM CITRIC ACID MONOHYDRATE Dihydrogenophosphate MERCK SODIUM DIHYDROGEN Sodium PHOSPHATE DEHYDRATE, (RECTAPURO) Glycerin ALDRICH GLYCEROL 1) Synthesis of polycondensates of cyclodextrins Example la The polycondensate of 8-cyclodextrin was obtained after extrusion of [3-cyclodextrin (CD) in the presence of hydroxypropylcellulose (HPC) ), citric acid and sodium dihydrogenphosphate (DHPS). The proportions of each constituent are given in percentages by weight below: Polymer -CD HPC Acid Dihydrogen phosphate of sodium citrate 45.16 22.58 2.28 According to this method of preparation, all the ingredients used in the composition making it possible to The polycondensate was incorporated at the same time into the extrusion tool (twin-screw extruder Clextral BC 21) at a temperature of 170 ° C. The extrusion conditions are summarized below: Temperature (° C) Extrusion rate Extrusion rate (rpm) (kg / h) 170 115 3 After grinding, the polycondensate la was obtained in the form of a cream color powder of average particle size of 10 μm. Protocol for Measuring the Swelling Ratio in Water: 2 g of crushed cyclodextrin polycondensate was suspended in 20 g of deionized water with gentle stirring for 24 h at room temperature. The supernatant was centrifuged to separate and then a dry extract was made on the centrifugate using a thermo-balance. The swelling ratio in% was obtained by the ratio of evaporated mass to dry mass x 100. The cyclodextrin la polycondensate has an acid number of 150 mg of potassium hydroxide per g of polycondensate and a degree of swelling. in the water of 805%. Examples Ib, 2a, 2b and 2c According to the same process, the following polycondensates of cyclodextrin (composition and synthesis conditions) were synthesized: The proportions of each constituent are given in percentages by weight as follows: Polycondensates 13-GO to D y-CD HPC Acid Anhydride DHPS maleic citrate cyclodextrin lb 44.71 0 0 29.7 22.35 1 2.24 2a 40.63 0 4.51 30 22.58 0 2.28 2b 31.61 13.53 The extrusion conditions, the acid number of the cyclodextrin polycondensates obtained as well as their swelling rate are calculated according to the extrusion conditions and the acid number of the cyclodextrin polycondensates obtained. in the water measured according to the same conditions as the example are summarized below.

Polycondensates Temperature Speed Flow Rate Index Rate of (° C) extrusion of acid extrusion swelling cyclodextrin (rpm) (kg / h) in water lb 170 110 3 161 740% 2a 180 110 3 127 520% 2b 175 130 3 130 440% 2c 180 110 3 128 530% Comparative Example A of cyclodextrin polycondensate synthesis according to the process of patent EP1165621 B1 In a 2 liter flask was introduced liter of demineralized water, 50 g of sodium dihydrogenphosphate H2PO4Na, 500g citric acid monohydrate and 1Kg 8-cyclodextrin. The reaction medium was stirred and heated at 60 ° C. -70 ° C. in order to solubilize the starting compounds. The solution obtained was transferred to a crystallizer whose size was chosen to obtain a liquid height of about 6 cm. The crystallizer was placed in an oven heated at 100 ° C. for 80 h (a soft gel was obtained). The temperature was then raised to 140 ° C. for 4 hours and then allowed to return to ambient temperature. The solid obtained was removed from the crystallizer and then finely ground using a grinder-type coffee grinder. It was analyzed by DOSY NMR2D which made it possible to demonstrate the covalent grafting of citric acid on F3cyclodextrin to form an oligomer whose diffusion coefficient is 173 pm 2 / s, which corresponds to a molecular mass estimated at about 3800 g / mole. Its acid number is 195 mg of potassium hydroxide per g of polycondensate and its rate of swelling in water is 0% because it is fully soluble at room temperature (solubility greater than 30%). 2) Capture of Smelly Compounds A two-dimensional gas chromatographic analysis (GCxGC / MS) was carried out in order to evaluate and map the capacity of the cyclodextrin polycondensates according to the invention to capture / trap malodorous compounds derived from sweat. 25 evolution. Test Protocol 500 μl of sweat was introduced into a 6 ml Headspace vial, and added 2; 5; 30 or 25 mg of cyclodextrin polycondensate to be evaluated. The vial (with Al / Si septum) was crimped and placed in an oven at 37 ° C. for 24 hours and then acidified by addition of 50 μl of 1N HCl. Control sweat was used: same protocol but without addition of cyclodextrin polycondensate. Solid phase microextraction (SPME) on PDMS / DVB fiber 65 μm 45 min at 37 ° C was performed. The fiber was desorbed in the GC1 chromatograph injector for 5 minutes and then conditioned for 30 minutes in another injector of a GC2 chromatograph. The mapping of odor molecules produced by evolving sweat was evaluated by mass spectography respectively on control sweat and sweat incubated in the presence of cyclodextrin polycondensate 1a. Instrumentation GCxGC / MS Gas Chromatograph 1 Auto-Injector: GC-2010 and AOC-20i (Shimadzu) 15 Column: Rxi-5ms (Restek); 30 mx 0.25 mm ID x 0.25 pm df Program temperature: 60 ° C (1 min) -> 270 ° C at 6 ° C / min Constant linear velocity: 27 cm / sec (initial Helium pressure: 36.1 psi) Mode of operation injection: with divider (divider ratio: 10/1) Injection temperature: 250 ° C Injection mode: solid phase microextraction Transfer line temperature: 280 ° C Gas chromatograph 2 Auto-injector: GC- 2010 (Shimadzu) Column: Rtx-200 (Restek); 1.5m x 0.1mm ID x 0.1pm df Program Temperature: 40 ° C (2 min) -> 245 ° C at 6 ° C / min Mass Spectrometer: QP2010 plus MS Detector (Shimadzu) 30 Mapper (Chrom Square) Fix the reel: 0.5 sec Scale 20000 -> 1.0E6 10 35 Results obtained with the polycondensate the results obtained with the polycondensate It was observed that with the addition of 25 mg of polycondensate, the following malodorous compounds produced by the sweat: acid 3-methyl-2-hexenoic, octanoic acid, 6,10-dimethyl-5,9-undecadien-2-one, tridecanone, nonandic acid, decanoic acid, dodecandic acid, isopentanol, 1-decanol were completely captured 3) Encapsulation The encapsulation properties of the p-cyclodextrin polymer were measured and compared with p-cyclodextrin alone but also with the p-cyclodextrin polycondensate of Comparative Example A as described above. - the polycondensate of reticulated p-cyclodextrin Epichlorohydrin containing 54% of CD marketed by Cyclolab under the reference CY-2009. (Comparative Example B) Protocol for Measurement of the Encapsulation Capacity At 1 g of each test compound, 5 g of dihydromyrcenol (perfume) were added. ) then left under slight agitation for 24 hours. After centrifugation to remove the non-impregnated perfume, air-dried at room temperature and protected from moisture for 24 hours, the impregnated compound was heated to 150 ° C. using a thermobalance still called a desiccator. halogen (METTLER TOLEDO model HG63) to constant weight. The amount of dihydromyrcenol encapsulated in the matrix of each test compound was thus measured. A quantity of between 0.5 g and 1 g of impregnated compound was placed on the cup and then the heating was started with automatic recording of the loss of mass every 2 minutes. When the mass was constant, the device automatically stopped the heating and edited the following data: initial mass, final mass, dry extract in% of 2 minutes in 2 minutes, total duration of evaporation.

The results of encapsulation of dihydromyrcenol according to the protocol described above are summarized in the table below: Test material Amount of encapsulated perfume (%) Polycondensate of [3 cyclodextrin la 68 (invention) [3 cyclodextrin 18 Polycondensate of [3 cyclodextrin comparative 18 A Polycondensate of [3 cyclodextrin Comparative 18 B It has been observed that the polycondensate of [3 cyclodextrin of Example la according to the invention has a degree of encapsulation in perfume 3.7 times greater than that of the [3 cyclodextrin] , that of the polycondensate of [3 comparative cyclodextrin A and that of the polycondensate of [3 comparative cyclodextrin B. Example 1: Deodorant and antiperspirant formulation Ingredients Quantity% by weight POLYCONDENSATE OF CYCLODEXTRIN the 5% DIMETHICONE (and) DIMETHICONE CROSSPOLYMER ( DOW CORNING (R) 9041 SILICONE ELASTOMER BLEND) 2% HYDROGENATED POLYDECENE (SILKFLO 366 POLYDECENE -INEOS) 26.3% PPG-14 BUTYL ETHER 2% TRIBEHENIN 6% (SYN CROVVAX HRC-PA-CRODA) TRIGLYCERIDES OF C18 / C36 FATTY ACIDS (SYNCROVVAX HGLC-PA- (MH) - CRODA) 1.5% DIMETHICONE 10 cst qs 100 The composition has good antiperspirant efficacy and good deodorant efficacy.

Claims (22)

REVENDICATIONS1. Water-insoluble cyclodextrin polycondensate obtainable by esterification / polycondensation reaction: A) at least one cyclodextrin and B) at least one polycarboxylic acid, linear or branched or cyclic, saturated or unsaturated or aromatic and / or at least one acid ester or anhydride or an acid halide of said polycarboxylic acid and C) at least one thermoplastic polyol polymer and D) optionally at least one esterification catalyst and / or E) optionally at least one polycarboxylic acid cyclic anhydride chosen to be different from the polycarboxylic acid anhydride of paragraph B) and / or F) optionally of at least one non-polymeric polyol comprising from 3 to 6 groups hydroxyls. 2. Polycondensate according to claim 1, in which the ratio between the number of moles of polycarboxylic acid and the number of moles of the cyclodextrin varies from 0.5 to 5, in particular from 0.6 to 4, in particular 0.7 at 3. Polycondensate according to claim 1 or 2, having an acid number, expressed in mg of potassium hydroxide per g of polycondensate, greater than or equal to 20; preferably from 20 to 250, and more preferably from 40 to 180; 4. Polycondensate according to any one of claims 1 to 3, characterized in that it has a degree of swelling in water measured at 20 ° C, greater than or equal to 100%; in particular ranging from 100 to 1000%, and even better ranging from 300 to 900%. 5. Polycondensate according to any one of claims 1 to 4, wherein the cyclodextrin is selected from α-cyclodextrin, 8-cyclodextrin, γ-cyclodextrin and mixtures thereof and most preferably is 8-cyclodextrin. 6. Polycondensate according to any one of claims 1 to 5, wherein the polycarboxylic acid is saturated aliphatic, linear and comprises from 2 to 36 carbon atoms, in particular 3 to 18 carbon atoms, or even 4 to 12 carbon atoms; or the polycarboxylic acid is aromatic and comprises 8 to 12 carbon atoms; more preferably it comprises from 2 to 4 COOH groups and is chosen more particularly from citric acid, aconitic acid, tartaric acid, 1,2,3-propane tricarboxylic acid, 1,2-acid, 3,4-butanetetracarboxylic, alone or in a mixture, preferably alone, and even better citric acid alone. 7. Polycondensate according to any one of claims 1 to 6, wherein: (i) the ester of said polycarboxylic acid is a mono, di-, tri- or tetra-alkyl ester of Cl-04 and in particular the methyl esters ethyl, isopropyl or n-butyl and more preferably the methyl or ethyl esters and more preferably the methyl or ethyl esters of polyacids having from 2 to 4 linear saturated aliphatic COOH groups comprising from 2 to 36 carbon atoms, in particular from 3 to 18 carbon atoms; carbon atoms, or even 4 to 12 carbon atoms; or else aromatic acid and comprising 8 to 12 carbon atoms; (ii) the acid anhydride is chosen from a) mixed anhydrides with a carboxylic acid at 02-04, in particular acetic acid, propionic acid or butyric acid, preferably acetic acid or else b) anhydrides cyclic such as phthalic anhydride, trimellitic anhydride, maleic anhydride, succinic anhydride, N, N, N ', N'-ethylenediamine tetraacetic acid dianhydride. (iii) the acid halide is selected from the chlorides and acid bromides of said polycarboxylic acid, preferably the halides of aconitic acid, tartaric acid, 1,2,3-propane tricarboxylic acid, 1,2,3,4-butanetetracarboxylic acid and preferably the chlorides of these acids. 8. Polycondensate according to any one of claims 1 to 7, wherein the thermoplastic polyol is selected from polyether-polyols, polyesters-polyols, polycarbonates-polyols, polyamides-polyols, polyurethane-polyols, polyalkylenes-polyols. polycaprolactone-polyols and polysaccharides and preferably polysaccharides and more preferably cellulose derivatives and more particularly hydroxypropylcellulose, hydroxyethylcellulose and even more preferably hydroxypropylcellulose alone. The polycondensate according to any one of claims 1 to 8, wherein the cyclic anhydride of a polycarboxylic acid, when present, corresponds to one of the following formulas: ABAB o 00 0 in which the groups A and B are, independently of each other: - a hydrogen atom, - a linear, branched and / or cyclic, or aromatic, aliphatic, saturated or unsaturated carbon radical; comprising 1 to 16 carbon atoms, especially 2 to 10 carbon atoms, or even 4 to 8 carbon atoms, especially methyl or ethyl; - Or A and B taken together form a ring comprising in total 5 to 7, in particular 6 carbon atoms, saturated or unsaturated, or even aromatic; More preferably A and B represent a hydrogen atom or together form an aromatic ring comprising in total 6 carbon atoms and more particularly, alone or as a mixture phthalic anhydride, trimellitic anhydride, maleic anhydride and succinic anhydride and even better maleic anhydride alone. 25 The polycondensate according to any one of claims 1 to 9, wherein the esterification catalyst, when present, is selected from dihydrogen phosphates, hydrogen phosphates, phosphates, hypophosphites, alkali metal phosphites, metal salts, and the like. alkali metals of polyphosphoric acids, carbonates, bicarbonates, acetates, borates, hydroxides of alkali or alkaline earth metals, aliphatic amines and ammonia, optionally combined with an inorganic solid support such as alumina, gels of Silicate, aluminum silicate, zeolites, titanium or zirconium oxides, sulphonic acids or titanates and preferably is selected from sodium hydrogen phosphate, sodium dihydrogen phosphate and sodium hypophosphite and even better sodium dihydrogenphosphate. 11. Polycondensate according to any one of claims 1 to 10, wherein the non-polymeric polyol comprising 3 to 6 hydroxyl groups, when present, is a linear, branched and / or cyclic, saturated or unsaturated, hydrocarbon compound, in particular comprising 3 to 18 carbon atoms, especially 3 to 12 or even 4 to 10 carbon atoms, and 3 to 6 hydroxy groups (OH), and may further comprise one or more oxygen atoms intercalated in the chain (ether function) and is preferably a saturated hydrocarbon compound, linear or branched, comprising 3 to 18 carbon atoms, especially 3 to 12, or even 4 to 10 carbon atoms and even more preferably selected from triols, tetraols, pentols, hexols and more particularly chosen from glycerol, pentaerythritol, diglycerol, sorbitol and mixtures thereof; and even better glycerol alone. 12. Polycondensate according to any one of claims 1 to 11 wherein: the cyclodextrin (s) represents from 10 to 70% by weight relative to the total weight used in the synthesis of the polycondensate; the acid or the polycarboxylic acids and / or their ester derivatives, acid anhydrides or acid halides represent from 5 to 40% by weight relative to the total weight used in the synthesis of the polycondensate; the thermoplastic polyol polymer or polymers represent from 10 to 50% by weight relative to the total weight used in the synthesis of the polycondensate; the anhydride or cyclic anhydrides of polycarboxylic acid, when present represent from 0.1 to 10% by weight relative to the total weight used in the synthesis of the polycondensate; the esterification catalyst (s), when present, represent from 0.1 to 5% by weight relative to the total weight used in the synthesis of the polycondensate; the non-polymeric polyol (s) comprising 3 to 6 hydroxyl groups represent, when present, from 1 to 30% by weight relative to the total weight used in the synthesis of the polycondensate. 13. Process for the preparation of a cyclodextrin polycondensate as defined in any one of the preceding claims, characterized in that it comprises at least the following stages: i) at least one cyclodextrin is mixed with at least one acid; polycarboxylic acid and / or one of its ester derivatives, acid anhydrides or acid halides, at least one thermoplastic polyol polymer and optionally at least one cyclic anhydride of polycarboxylic acid different from the preceding polycarboxylic acid anhydride and at least one esterification catalyst and / or at least one non-polymeric polyol comprising 3 to 6 hydroxyl groups ii) an antioxidant agent is optionally added to said mixture iii) the mixture thus obtained is heated to a temperature ranging from 100 to 250 ° C., preferably by gradually eliminating the water, the alcohol or the acid formed, then iv) the mixture thus obtained is cooled to room temperature; the esterification / polycondensation reaction can be carried out, in whole or in part, in an inert solvent such as xylene and / or under reduced pressure, to facilitate the removal of water; said process being preferably carried out without a solvent. 14. Process for the preparation of a cyclodextrin polycondensate as defined in any one of the preceding claims, characterized in that at least one cyclodextrin, at least one polycarboxylic acid and / or one of its ester derivatives is mixed together. , its acid anhydride derivatives or its acid halides, at least one thermoplastic polyol polymer and optionally at least one cyclic anhydride of polycarboxylic acid different from the preceding polycarboxylic acid anhydride and / or at least one catalyst esterification agent and / or at least one non-polymeric polyol comprising 3 to 6 hydroxyl groups in an apparatus exerting sufficient shearing forces to bring said mixture into a thermoplastic state and preferably operating at a temperature ranging from 100 to 250 ° C., preferentially from 110 to 200 ° C. 15. Preparation process according to claim 14, characterized in that it incorporates in a single step all the ingredients in an extruder at a temperature ranging from 110 to 200 ° C, preferably from 120 to 190 ° C and still more preferably from 150 to 180 ° C and with a residence time in the extruder preferably varying from 1 to 10 minutes, and still more preferably from 1 to 5 minutes. 16. Use of a cyclodextrin polycondensate as defined in any one of the claims as a capture agent. 17. The use as claimed in claim 16, as a capture agent for a substance or a mixture of substances chosen from: (i) those likely to pollute the environment, (ii) those likely to have a negative impact on a consumer Product ; (iii) those liable to deteriorate under the influence of atmospheric agents or in contact with one or more ingredients in a composition; (iv) those capable of generating discomfort reactions on a particular keratinous material. (v) beneficial agents. 25 18. Use according to claim 17, wherein the beneficial agents are chosen from: (i) fatty substances; (ii) flavoring substances and / or flavor enhancers; (Iii) perfumes; (iv) pharmaceutical active ingredients; (v) cosmetic assets. 19. Use according to claim 17, wherein the substance or the mixture of substances likely to generate discomfort reactions on a particularly human keratinous material are chosen from (i) malodorous molecules, in particular bodily molecules, (ii) constituents human sweat; (iii) the constituents of sebum. 20. Consumer product comprising at least one cyclodextrin polycondensate as defined in any one of the preceding claims; said consumer product is in particular a cosmetic or dermatological composition comprising a physiologically acceptable medium. 21. A process for the cosmetic treatment of human perspiration and / or body odor consisting in applying to the surface of a human keratin material a composition comprising in a physiologically acceptable medium at least one cyclodextrin polycondensate as defined in any one of the following: of the preceding claims. 22. Non-therapeutic cosmetic process for the care and / or cleaning of a fat or fat-oily human keratinous material, comprising at least one step of topical application to said keratinous material of a composition comprising in a physiologically acceptable medium at room temperature. minus a cyclodextrin polycondensate as defined in any one of the preceding claims.