EP2205201A2 - Cosmetic or pharmaceutical composition containing a polycondensate, polycondensate and cosmetic treatment method - Google Patents

Abstract

The invention relates to a cosmetic or pharmaceutical composition containing a polycondensate that can be obtained by reacting the following single monomers expressed as a percent by weight in relation to the total weight over the polycondensate: 10 - 30 wt.-% of one or more poylols having 3 to 6 hydroxyl groups; 30 - 80 wt.-% of one or more linear, branched and/or cyclic, saturated or unsaturated, non-aromatic monocarboxylic acids having 6 to 32 carbon atoms; 1 - 40 wt.-% of one or more polycarboxylic acids and/or cyclic anhydrides of one such polycarboxylic acid and/or lactones having at least one COOH group; and, optionally, 0.1 - 15 wt.-% of one or more silicons having a hydroxyl and/or carboxylic function. The invention also relates to a cosmetic treatment method using said composition and to the polycondensate defined above.

Description

 Cosmetic or pharmaceutical composition comprising a polycondensate, said polycondensate and a cosmetic treatment method

The present invention relates to cosmetic compositions, especially makeup and in particular lipsticks, comprising very specific polycondensates.

There are numerous cosmetic compositions for which gloss properties of the deposited film, after application to the keratin materials (skin, lips, phala), are desired. Examples include lipsticks, nail polish or some hair products.

In order to obtain such a result, it is possible to associate particular raw materials, especially lanolins, with so-called brilliant oils, such as polybutenes which however have a high viscosity; or esters of fatty acid or alcohol whose carbon number is high; or some vegetable oils; or esters resulting from the partial or total esterification of an aliphatic compound hydroxylated with an aromatic acid, as described in the patent application EP1097699. It is also known to combine lanolins with polyesters obtained by the reaction of castor oil with isostearic acid and then with succinic acid, as described in US Pat. No. 6,334,257.

To improve the gloss of the deposited film, as well as its strength, it has also been proposed to use esters resulting from the. condensation of a polyol with a carboxylic acid of "neo" type, especially in FR2838049.

EP1457201, which describes a composition combining a polyester of triglycerides of hydroxylated carboxylic acids and a low molecular weight oil chosen from polybutylenes, hydrogenated polyisobutylenes, hydrogenated or non-hydrogenated polydecenes, copolymers of vinylpyrrolidones, linear fatty acids, hydroxylated esters, esters of fatty alcohols or of C24-C28 branched fatty acids, silicone oils and / or oils of plant origin. .

Patent Application EP0792637 describes a composition combining an aromatic ester and a polybutene or polyisobutene type polymer.

In the patent application EP1155687, there is described a process consisting in incorporating into an oily phase consisting of a cosmetically acceptable oil, an organopolysiloxane having at least 2 groups capable of establishing hydrogen bonds.

However, these compositions and combinations, even if they improve the gloss significantly, are still considered insufficient in a long-term perspective of this brightness, over time.

The object of the present invention is to provide novel polymers which can confer significant brightness to a particularly film-forming deposit, while maintaining a good durability over time of this gloss; this may find a particularly advantageous application in the field of lipsticks. In addition, polymers are also to give the composition an excellent hold over time on keratin materials, especially on the lips.

To this end, the Applicant has researched new polycondensates of alkyd type, having the desired properties.

Alkyd resins constitute a particular class of polyesters by being the reaction product of polyols and polycarboxylic acids, generally modified with unsaturated fatty acids, such as oleic acid, or by unsaturated oils, soybean oil or castor oil. for example, which make it possible to modulate their film-forming properties, in particular their drying speed, their hardness, their resistance.

Thus, it has been proposed in US2915488 modified alkyd resins in which a portion of the fatty acids from the soybean oil has been replaced by benzoic acid. These new resins have improved properties in terms of resistance to alkalis and detergents; the films containing them dry faster and are harder. However, no application, in particular cosmetic or topical, has been envisaged for these resins. In addition, the composition of the alkyd resins of this document is not optimal for use in cosmetics, especially in terms of polymer stability. WO2006 / 004911 is also known, which describes polyester polyol polymers that can be used in cosmetics, in particular to replace castor oil; however, the polymers described herein all have a dynamic viscosity at 25 ° C of 200 to 5000 centipoise (mPa.s). However, these polymers do not give the compositions comprising them the desired properties in terms of gloss, maintaining this gloss over time, and long-lasting composition on keratin materials, including skin.

Moreover, most of the known alkyd resins do not have a suitable solubility in the oily media usually used in cosmetics, such as vegetable oils, alkanes, fatty esters, fatty alcohols, silicone oils, and the like. especially comprising isododecane, Parleam, isononyl isononanoate, octyldodecanol, phenyl trimethicone, C12-C15 alkyl benzoate and / or D5 (decamethylcyclopentasiloxane).

After considerable research, the applicant has surprisingly and unexpectedly discovered that certain polycondensates with a high content of particular carboxylic acids, and of very high viscosity, could lead to improved performances in terms of gloss, of maintaining said gloss. and furthermore long-lasting of the film obtained, while being transportable in the usual cosmetic media, especially the usual cosmetic oily media.

The subject of the present invention is therefore a cosmetic or pharmaceutical composition comprising, in a cosmetically or pharmaceutically acceptable medium, at least one polycondensate obtainable by reaction of the following monomers only:

from 10 to 30% by weight, relative to the total weight of the polycondensate, of one or more polyols comprising 3 to 6 hydroxyl groups;

from 30 to 80% by weight, relative to the total weight of the polycondensate, of one or more linear or branched and / or cyclic saturated or unsaturated non-aromatic monocarboxylic acids comprising 6 to 32 carbon atoms;

from 1 to 40% by weight, relative to the total weight of the polycondensate, of one or more polycarboxylic acids and / or cyclic anhydrides of such a polycarboxylic acid and / or lactones comprising at least one COOH group; and optionally from 0.1 to 15% by weight, based on the total weight of the polycondensate, of one or more hydroxyl and / or carboxylic functional silicones.

The subject of the invention is also the polycondensate thus defined.

In particular, the cosmetic compositions have good applicability and good coverage; good adhesion to the support, whether on the nail, hair, eyelashes, skin or lips; adequate flexibility and film strength, to avoid cracking, for example in the case of varnishes or lipsticks; as well as an excellent level of lasting shine. The comfort and slip properties are also very satisfying. These polycondensates are easily transportable in solvent or oily cosmetic media, especially oils, fatty alcohols and / or fatty esters, which facilitates their implementation in the cosmetics field, especially in lipsticks or foundations. .

The polycondensates according to the invention can be prepared easily, in a single synthesis step, and without generating waste, this at low cost. Moreover, it is easily possible to modify the structure and / or the properties of the polycondensates according to the invention, by varying the chemical nature of the various constituents and / or their proportions.

The polycondensates according to the invention are advantageously branched (branched); it can be thought that this makes it possible to generate a network by entanglement of the polymer chains, and thus to obtain the desired properties, in particular in terms of improved behavior, improved gloss, and in terms of solubility. It has indeed been found that the linear polycondensates did not make it possible to obtain a significant improvement in the strength of the composition, and that the dendrimer polycondensates, whose chains are regular, did not exhibit optimum solubility.

The polycondensates according to the invention are polycondensates of alkyd type, and are therefore capable of being obtained by esterification / polycondensation, according to methods known to those skilled in the art, constituents described below.

One of the constituents necessary for the preparation of the polycondensates according to the invention is a compound comprising 3 to 6 hydroxyl groups (polyol), in particular 3 to 4 hydroxyl groups. It is of course possible to use a mixture of such polyols.

Said polyol may especially be a hydrocarbon compound, in particular linear, branched and / or cyclic, saturated or unsaturated, comprising 3 to 18 carbon atoms, especially 3 to 12 or even 4 to 10 carbon atoms, and 3 to 6 groups. hydroxy (OH), and may further comprise one or more oxygen atoms interposed 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 can be chosen from, alone or in mixture:

triols, such as 1, 2,4-butanetriol, 1, 2,6-hexanetriol, trimethylolethane, trimethylolpropane, glycerol;

tetraols, such as pentaerythritol (tetramethylolmethane), erythritol, di-glycerol or dithmethylolpropane;

pentols such as xylitol,

hexols such as sorbitol and mannitol; or dipentaerythritol or triglycerol.

Preferably, the polyol is selected from glycerol, pentaerythritol, diglycerol, sorbitol and mixtures thereof; and even better is pentaerythritol. The polyol, or polyol mixture, preferably represents 10 to 30% by weight, especially 12 to 25% by weight, and more preferably 14 to 22% by weight, of the total weight of the final polycondensate.

Another constituent necessary for the preparation of the polycondensates according to the invention is a saturated or unsaturated, linear, branched and / or cyclic non-aromatic monocarboxylic acid comprising 6 to 32 carbon atoms, in particular 8 to 28 carbon atoms, and even better 10 to 24 or even 12 to 20 carbon atoms. Of course, a mixture of such nonaromatic monocarboxylic acids can be used.

By non-aromatic monocarboxylic acid is meant a compound of formula RCOOH, in which R is a linear, branched and / or cyclic saturated or unsaturated hydrocarbon radical comprising 5 to 31 carbon atoms, especially 7 to 27 carbon atoms, and still more preferably 9 to 23 carbon atoms, or even 11 to 19 carbon atoms.

Preferably, the radical R is saturated. Even better, said radical R is linear or branched, and preferably C5-C31, or even C11-C21. In a particular embodiment of the invention, the nonaromatic monocarboxylic acid has a melting point greater than or equal to 25 ° C. especially greater than or equal to 28 ° C, or even 30 ^° C; it has indeed been found that when such an acid is used, in particular in large quantities, it is possible, on the one hand, to obtain a good gloss and the holding of said gloss, and on the other hand to reduce the amount of waxes usually present in the composition envisaged.

Among the nonaromatic monocarboxylic acids that may be used, mention may be made, alone or as a mixture, of:

saturated monocarboxylic acids such as caproic acid, caprylic acid, isoheptanoic acid, 4-ethylpentanoic acid, 2-ethylhexanoic acid, 4,5-dimethylhexanoic acid, 2-heptylheptanoic acid, 3,5,5-trimethylhexanoic acid, octanoic acid, isooctanoic acid, nonanoic acid, decanoic acid, isononanoic acid, lauric acid, acid tridecanoic acid, myristic acid, palmitic acid, stearic acid, isostearic acid, arachidic acid, behenic acid, cerotic acid (hexacosanoic acid); cyclopentanecarboxylic acid, cyclopentaneacetic acid, 3-cyclopentylpropionic acid, cyclohexanecarboxylic acid, cyclohexylacetic acid, 4-cyclohexylbutyric acid;

unsaturated but nonaromatic monocarboxylic acids, such as caproleic acid, obtusilic acid, undecylenic acid, dodecylenic acid, linderic acid, myristoleic acid, physétérique acid, tsuzuique acid , palmitoleic acid, oleic acid, petroselinic acid, vaccenic acid, elaidic acid, gondoic acid, gadoleic acid, erucic acid, cetoleic acid, nervonic acid , linoleic acid, linolenic acid, arachidonic acid.

Among the nonaromatic monocarboxylic acids having a melting temperature greater than or equal to 25 ° C., mention may be made, alone or as a mixture:

- Among the saturated monocarboxylic acids: decanoic acid (capric), lauric acid, tridecanoic acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, cerotic acid (hexacosanoic);

- Of unsaturated but nonaromatic monocarboxylic acids: petroselinic acid, vaccenic acid, elaidic acid, gondoic acid, gadoleic acid, erucic acid, nervonic acid.

Preferably, it is possible to use 2-ethylhexanoic acid, isooctanoic acid, lauric acid, myristic acid, isoheptanoic acid, isononanoic acid, nonanoic acid, palmitic acid, isostearic acid, stearic acid, behenic acid and mixtures thereof, and even better isostearic acid alone or stearic acid alone.

Said nonaromatic monocarboxylic acid, or the mixture of said acids, is preferably 30 to 80% by weight, especially 40 to 75% by weight, or even 45 to 70% by weight, and more preferably 50 to 65% by weight, of the total weight. of the final polycondensate. Another constituent necessary for the preparation of the polycondensates according to the invention is a polycarboxylic acid, and / or a cyclic anhydride of such a polycarboxylic acid, and / or a lactone carrying at least one COOH group; as well as their mixtures.

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, in particular 2 to 40, carbon atoms, in particular 3 to 36, or even 3 at 18, and even more preferably 4 to 12 carbon atoms, or even 5 to 10 carbon atoms; said acid comprising at least two carboxylic groups COOH, preferably from 2 to 4 COOH groups; and may comprise 1 to 10 heteroatoms, preferably 1 to 6, identical or different, selected from O, N and S; and / or may comprise at least one perfluorinated radical chosen from -CF ₂ - (divalent) or -CF ₃ .

Preferably, said polycarboxylic acid 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.

Said cyclic anhydride of such a polycarboxylic acid may in particular correspond to one of the following formulas:

in which the groups A and B are independently of each other:

a hydrogen atom,

a saturated or unsaturated, linear, branched and / or cyclic, or aromatic, carbon, aliphatic 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 14, in particular 5 to 10 or even 6 to 7 carbon atoms, saturated or unsaturated, or even aromatic.

Preferably, A and B represent a hydrogen atom or together form an aromatic ring comprising in total 6 to 10 carbon atoms.

Among the polycarboxylic acids or their anhydrides that may be used, mention may be made, alone or as a mixture:

dicarboxylic acids such as decanedioic acid, dodecanedioic acid, cyclopropanedicarboxylic acid, cyclohexanedicarboxylic acid, cyclobutanedicarboxylic acid, naphthalene-1,4-dicarboxylic acid, naphthalene-2,3-dicarboxylic acid, naphthalene-2,6-dicarboxylic acid, suberic acid, oxalic acid, malonic acid, succinic acid, phthalic acid, terephthalic acid, isophthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, pimelic acid, sebacic acid, acid azelaic acid, glutamic acid, adipic acid, fumaric acid, maleic acid, itaconic acid, dimers of fatty acids (in particular C36) such as the products sold under the names Pripol 1006 , 1009, 1013 and 1017, by Uniqema;

tricarboxylic acids such as cyclohexanetricarboxylic acid, trimellitic acid, 1,2,3-benzenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid; aconitic acid, especially trans-aconitic acid;

tetracarboxylic acids such as butanetetracarboxylic acid and pyromellitic acid,

cyclic anhydrides of these acids and especially phthalic anhydride, trimellitic anhydride, maleic anhydride and succinic anhydride.

Preferably, it is possible to use adipic acid, phthalic anhydride and / or isophthalic acid, and even better isophthalic acid alone.

Mention may also be made of polycarboxylic acids chosen from, alone or as a mixture:

(i) linear or branched chain saturated or unsaturated polycarboxylic acids comprising at least one heteroatom selected from O, N and / or S, in particular 1 to 10 identical or different heteroatoms, and / or comprising at least one perfluorinated radical; -CF ₂ - or -CF ₃ and also having at least 2 carboxyl groups COOH, especially 2 to 4 COOH groups; and / or a cyclic anhydride of such a polycarboxylic acid; and or

(ii) heterocyclic polycarboxylic acids, saturated or unsaturated, or even aromatic, comprising at least one heteroatom selected from O, N and / or S, in particular 1 to 10, or even 1 to 4, identical or different hetero atoms, and at least 2 COOH carboxylic groups, especially 2 to 4 COOH groups; and / or a cyclic anhydride of such a polycarboxylic acid; and or

(iii) polycarboxylic acids derived from sugar, obtainable in particular by oxidation of an aldose, and comprising at least 2 carboxylic groups COOH, in particular 2 or 3 COOH groups; and / or a cyclic anhydride of such a polycarboxylic acid; and or

(iv) itaconic anhydride and 1,4,4,8-naphthalenetetracarboxylic acid 1,4-monoanhydride; and or

(v) polycarboxylic amino acids (including heterocyclic), ie linear or branched saturated or unsaturated chain polycarboxylic acids, and / or cyclic, optionally comprising at least one heteroatom selected from O, N and / or S, in particular 1 to 10 identical or different heteroatoms, and / or optionally comprising at least one perfluorinated radical -CF ₂ - or -CF ₃ ; and further comprising at least one primary, secondary or tertiary amine function (especially NR1 R2 with R1 and R2, independently of one another selected from H and C1-C12 alkyl), in particular 1 to 3 identical amino functions, or different, and also having at least 2 carboxylic groups COOH, especially 2 to 4 COOH groups; and / or a cyclic anhydride of such a polycarboxylic acid.

The following dicarboxylic acids may be mentioned alone or as a mixture:

(I)

2,2 '- [1,5-pentanediylbis (thio)] bis-acetic acid

6,6 '- [(1,2-dioxo-1,2-ethanediyl) diimino] bis-hexanoic acid

2,2'-sulfinylbisacetic acid

4,13-dioxo-3,5,12,14-Tetraazahexadecanedioic acid

Poly (ethylene glycol) disuccinate, in particular of 250-600 mass

Poly (ethylene glycol) bis (carboxymethyl) ether, in particular of mass 250-600

Poly (oxy (1, 2-dicarboxy-1,2-ethanediyl)], in particular DP <10

- 8 - [(carboxymethyl) amino] -8-oxooctanoic acid

2,2 '- [methylenebis (sulfonyl)] bis-acetic acid

4,4 '- (1,6-hexanediyldiimino) bis [4-oxo-butanoic acid]

- 4,9-dioxo-3,5,8,10-tetraazadodecanedioic acid

- 4 - [(1-carboxyethyl) amino] -4-oxo-butanoic acid

- 6 - [(3-Carboxy-1-oxopropyl) amino] hexanoic acid

N, N '- (1,6-dioxo-1,6-hexanediyl) bis-glycine

N, N '- (1,6-dioxo-1,6-hexanediyl) bis-phenylalanine

N, N '- (1,3-dioxo-1,3-propanediyl) bis-glycine

4,4 '- [(1,4-dioxo-1,4-butanediyl) diimino] bis-butanoic acid

4,4 '- [(1,6-dioxo-1,6-hexanediyl) diimino] bis-butanoic acid

- 6,6 '- [1,6-hexanediylbis (iminocarbonylimino)] bis-hexanoic acid

- N-benzoyl-S- (carboxymethyl) - Cysteine

N, N '- (2,2,3,3-tetrafluoro-1,4-dioxo-1,4-butanediyl) bis-glycine

N, N '- (2,2,3,3-tetrafluoro-1,4-dioxo-1,4-butanediyl) bis-alanine

4,4 '- [(2,2,3,3-tetrafluoro-1,4-dioxo-1,4-butanoic acid)

N, N '- (1,5-dioxo-1,5-pentanediyl) bis-glycine

N, N '- (1,9-dioxo-1,9-nonanediyl) bis-glycine

N, N '- (1,10-dioxo-1, 10-decanediyl) bis [N-methylglycine]

- The bis (3-carboxypropyl) ester of propanedioic acid

- 7,16-dioxo-6,8,15,17-Tetraazadocosanedioic acid

- N-benzoyl-N- (2-carboxyethyl) -Glycine

- [2 - [(2-carboxymethyl) amino] -2-oxoethyl] - benzenepropanoic acid

- [2 - [(2-Carboxyethyl) amino] -2-oxoethyl] - benzenepropanoic acid (Ϋ)

- 4,7,9,12-Tetraoxapentadecanedioic acid

- 2,3-Pyridinedicarboxylic acid

- 4-Pyranone-2,6-dicarboxylic acid

- 2,5-Pyrazinedicarboxylic acid

- 2,5-Pyridinedicarboxylic acid

- 2,3-Benzofurandicarboxylic acid

- 7-oxabicyclo [2.2.1] heptane-2,3-dicarboxylic acid

- 3,4-Pyridinedicarboxylic acid

- 2,4-Pyridinedicarboxylic acid

- 3,5-Pyridinedicarboxylic acid

- 2,6-Pyridinedicarboxylic acid

- 1H-1midazole-4,5-dicarboxylic acid

- 2,3-Quinolinedicarboxylic acid

- 6,6,7,7-tetrafluoro-3-Oxabicyclo [3.2.0] heptane-2,4-dicarboxylic acid

2,6-Pyrazinedicarboxylic acid

2,6-Dimethyl-3,5-pyridinedicarboxylic acid

- 1-phenyl-1H-Pyrazole-3,4-dicarboxylic acid

- 2,5-Furanedicarboxylic acid

- 3,4-Furanedicarboxylic acid

- 1, 2,5-Thiadiazole-3,4-dicarboxylic acid

- 1,4-Dihydro-1,2,4,5-tetrazine-3,6-dicarboxylic acid

- 2,3-Furanedicarboxylic acid

3,4-Thiophenedicarboxylic acid

- 1H-1, 2,3-Triazole-4,5-dicarboxylic acid

- 2-Methylimidazole-4,5-dicarboxylic acid

- 2,4-Quinolinedicarboxylic acid

- Naphtho [2,1-b] furan-1,2-dicarboxylic acid

- 3,4-Quinolinedicarboxylic acid

- 7-Oxabicyclo [2.2.1] hept-5-ene-2,3-dicarboxylic acid

- 2,3-Quinoxalinedicarboxylic acid

- 1,4-Piperazinedicarboxylic acid

- 2,5-Dimethyl-3,4-Furandicarboxylic acid

- tetrahydro-2,5-thiophenedicarboxylic acid

- 4-phenyl-3,5-pyridinedicarboxylic acid

- Thieno [3,2-b] thiophene-2,5-dicarboxylic acid

- 3-methyl-2,4-Thiophenedicarboxylic acid

- Naphthostyril-5,6-dicarboxylic acid

- 3-phenyl-2,4-quinolinedicarboxylic acid

3,4-Dimethyl-2,5-dicarboxythiophene

3,4-Diphenyl-2,5-thiophenedicarboxylic acid

2,5-diphenyl-3,4-furanedicarboxylic acid 7-Oxc-7H-benzimidazo [2,1-a] benz [de] isoquinoline-3,4-dicarboxylic acid

- 2,3-Dihydro-1,3-dioxo-1H-Benz [de] isoquinoline-6,7-dicarboxylic acid

3,4-bis (phenylmethoxy) -2,5-furandicarboxylic acid

4,4'-Bibenzoic acid-2,2'-sulfone

- 2,7-Diphenyl-m-anthrazoline-4,5-dicarboxylic acid

- 2,4-Pyrimidinedicarboxylic acid

- 2-Phenyl-4,5-thiazoledicarboxylic acid

- 6-phenyl-2,3-pyridinedicarboxylic acid

- 5,6-Dimethyl-2,3-pyrazinedicarboxylic acid

- 3,7-Dibenzothiophenedicarboxylic acid

9-oxo-9H-Xanthene-1,7-dicarboxylic acid

2- (1,1-dimethylethyl) -H-imidazole-4,5-dicarboxylic acid

- 6,7-Quinolinedicarboxylic acid

- 6-Methyl-2,3-pyridinedicarboxylic acid

- 4,5-Pyrimidinedicarboxylic acid

- 2-methyl-3,4-furanedicarboxylic acid

- 1, 2-Indolizinedicarboxylic acid

- 2,8-Dibenzothiophenedicarboxylic acid

- 3,6-Pyridazinedicarboxylic acid

- 1, 10-Phenanthroline-2,9-dicarboxylic acid

- 1, 4,5,6-tetrahydro-5,6-dioxo-2,3-pyrazinedicarboxylic acid

3,4-Dimethoxy-2,5-furandicarboxylic acid

- 2-Ethyl-4,5-imidazoledicarboxylic acid

- 2-Propyl-1H-imidazole-4,5-dicarboxylic acid

- 4-phenyl-2,5-pyridinedicarboxylic acid

- 4,5-Pyridazinedicarboxylic acid

- 1, 4,5,8-Tetrahydro-1,4,5,8-Diepoxynaphthalene-4a, 8a-dicarboxylic acid

- 5,5-dioxide-2,8-Dibenzothiophenedicarboxylic acid

- Pyrazolo [1,5-a] pyridine-2,3-dicarboxylic acid

2,3-Dihydro-1H-pyrrolizine-1,7-dicarboxylic acid

- 6-methyl-2,4,5-pyridinetricarboxylic acid

- Pyrrolo [2,1,5-cd] indolizine-5,6-dicarboxylic acid

3,4-Bis (2,2,3,3,4,4,4-heptafluorobutyl) -1H-pyrrole-2,5-dicarboxylic acid -The acid 6,7,9,10,17 , 18,20,21-octahydrodibenzo [b, k] [1,4,7,10,13,16] hexaoxacyclo-octadecin-2,14-dicarboxylic acid

6,7,9,10,17,18,20,21-octahydro-dibenzo [b, k] [1, 4, 7, 10, 13, 16] hexaoxacyclo octadecin-2, 13-dicarboxylic acid

- 2-methyl-3,4-Quinolinedicarboxylic acid

- 4,7-Quinolinedicarboxylic acid

- 3,5-lsoxazoledicarboxylic acid

2- (trifluoromethyl) 3,4-furanedicarboxylic acid

5- (trifluoromethyl) -2,4-furanedicarboxylic acid

- 6-methyl-2,4-quinolinedicarboxylic acid - 5-oxo-1,2-pyrrolidinedicarboxylic acid

- 5-Ethyl-2,3-pyridinedicarboxylic acid

- 1, 2-Dihydro-2-oxo-3,4-quinolinedicarboxylic acid

- 4,6-Phenoxathiindicarboxylic acid

- 10,10-dioxide 1,9-phenoxathiindicarboxylic acid

3,4-Dihydro-2H-1,4-thiazine-3,5-dicarboxylic acid

2,7-Di (tert-butyl) -9,9-dimethyl-4,5-xanthenedicarboxylic acid

- 6-methyl-2,3-quinoxalinedicarboxylic acid

- 3,7-Quinolinedicarboxylic acid

- 2,5-Quinolinedicarboxylic acid

- 2-Methyl-6-phenyl-3,4-pyridinedicarboxylic acid

3,4-dimethylthieno [2,3-b] thiophene-2,5-dicarboxylic acid

3,4-Dimethoxythiophene-2,5-dicarboxylic acid

- 5-methyl-3,4-lsoxazoledicarboxylic acid

2,6-bis (aminocarbonyl) -3,5-pyridinedicarboxylic acid

- 3,5-bis (aminocarbonyl) -2,6-pyrazinedicarboxylic acid

- 2,3-Pyridinedicarboxylic acid

6- (1,1-Dimethylethyl) -2-ethyl-3,4-pyridinedicarboxylic acid

- 3-methyl-5-phenyl-2,4-thiophenedicarboxylic acid

- 1, 2-Dihydro-2-oxo-6-phenyl-3,5-pyridinedicarboxylic acid

- 8-methyl-2,4-quinolinedicarboxylic acid

- 4-ethyl-2,6-dimethyl-3,5-pyridinedicarboxylic acid

- 5- (phenoxymethyl) -2,4-Furanedicarboxylic acid

5- (acetylamino) -3-methyl-2,4-thiophenedicarboxylic acid

2- (4-heptylphenyl) -4,8-quinolinedicarboxylic acid

- 2,8-bis (4-heptylphenyl) -pyrido [3,2-g] quinoline-4,6-dicarboxylic acid

1, 2,3,4,6,7,8,9-octahydro-2,8-dioxo-pyrido [3,2] quinoline-3,7-dicarboxylic acid

- 2,8-dimethyl-pyrido [3,2-g] quinoline-3,7-dicarboxylic acid

- 5,6-Quinolinedicarboxylic acid

- 6-ethyl-2-methyl-cinchomeronic acid

- 2-methyl-6-propyl-cinchomeronic acid

- 6-isopropyl-2-methyl-cinchomeronic acid

- 6-tert-butyl-2-methyl-cinchomeronic acid

- 1,4-Dimethyl-7-Oxabicyclo [2.2.1] heptane-2,3-dicarboxylic acid

- 1,2-Dihydro-2-oxo-3,8-quinoline dicarboxylic acid

- 1, 2-Dihydro-2-oxo-3,6-quinoline dicarboxylic acid

- 1, 2-Dihydro-2-oxo-3,7-quinoline dicarboxylic acid

- 3,7-dimethyl-2,8-diphenyl-pyrido [3,2-g] quinoline-4,6-dicarboxylic acid

- 8-methyl-2,3-Quinolinedicarboxylic acid

3 - [[(1,1-Dimethylethyl) amino] sulfonyl] -2,5-thiophene dicarboxylic acid

4- (Acetylamino) -2,3-thiophenedicarboxylic acid

- 2,5-Pyridinedicarboxylic acid - 2,6-Pyridinedicarboxylic acid

- 2,4-Thiophenedicarboxylic acid

- 2,5-Thiophenedicarboxylic acid

- 1,4-pyran-2,6-dicarboxylic acid

(Iii)

- Ribarique acid

- Glucaric acid

- Xylaric acid

- Arabinaric acid

- Mannaric acid

- Idaric acid

- Altraric acid

- L-Glucaric acid

- L-Arabinaric acid

- Allaric acid

- Galactaric acid

- meso-Tartaric acid

- D-Glucaric acid

- L-ldaric acid

- Hexaric acid

- 2,3-Dihydroxybutanedioic acid

- D-Tartaric Acid

- DL-Tartaric Acid

- D-Glucaric acid

- tartaric acid

- Tetrahydroxysuccinic acid

2-carboxy-2,3-dideoxy D-manno-2-octulopyranosonic acid

- Methyl 3-deoxy-D-arabino-2-heptulopyranosaric acid

- D-lyxo-2-heptulopyranosaric acid

2,6-Anhydro-L-glycero-L-galacto-heptaric acid

(Iv)

- 1, 4,5,8-Naphthalenetetracarboxylic acid 1,4-monoanhydride

- itaconic anhydride

(V)

1,4-dihydro-4-oxo-2,6-pyridinedicarboxylic acid

2,6-Piperidinedicarboxylic acid

1 H-Pyrrole-3,4-dicarboxylic acid

- 4-amino-2,6-dicarboxylic acid

1-methyl-1H-Pyrazole-3,4-dicarboxylic acid

2,3-Piperidinedicarboxylic acid 1-methyl-1H-1-imidazole-4,5-dicarboxylic acid

2,4-Thiazolidinedicarboxylic acid

1- (phenylmethyl) -1H-1-imidazole-4,5-dicarboxylic acid

5-amino-6-oxo-2,3-piperidinedicarboxylic acid

5-amino-6-oxo-2,4-piperidinedicarboxylic acid

5-amino-6-oxo-2,3-piperidinedicarboxylic acid

5-amino-6-oxo-, [2S- (2α, 4β, 5α)] - 2,4-piperidinedicarboxylic acid

- (2S, 4R) -2,4-Pyrrolidinedicarboxylic acid

- (2S-cis) -2,4-Pyrrolidinedicarboxylic acid

2-amino-1H-1-imidazole-4,5-dicarboxylic acid

- 2,5-Pyrrolidinedicarboxylic acid

4-amino-3,5-lsothiazoledicarboxylic acid

1-methyl-1H-Pyrazole-3,5-dicarboxylic acid

7- (diethylamino) -2-oxo-2H-1-benzopyran-3,4-dicarboxylic acid

3,4-diethyl-1H-pyrrole-2,5-dicarboxylic acid

1-phenyl-1H-pyrrole-3,4-dicarboxylic acid

cis-2,3-Piperazinedicarboxylic acid

2,3-Piperazinedicarboxylic acid

- 2,5-Piperazinedicarboxylic acid

2,6-Piperazinedicarboxylic acid

2-amino-3,5-pyridinedicarboxylic acid

2-methyl-pyrrole-3,4-dicarboxylic acid

4- (methylamino) -2,6-pyridinedicarboxylic acid

2-amino-6-methyl-3,4-pyridinedicarboxylic acid

5-amino-2-methyl-3,4-pyridinedicarboxylic acid

2-amino-6-methyl-3,5-pyridinedicarboxylic acid

2,5-dimethyl-pyrrole-3,4-dicarboxylic acid

2,5-dimethyl-pyrrole-3,4-dicarboxylic acid

2-amino-6-hydroxy-3,5-pyridinedicarboxylic acid

2,4-Pyrrolidinedicarboxylic acid

1H -indole-2,4-dicarboxylic acid

1 H-indole-2,6-dicarboxylic acid

1H-lndole-2,5-dicarboxylic acid

- 5-phenyl-2,4-pyrrolidinedicarboxylic acid

- 5-methyl-2,4-pyrrolidinedicarboxylic acid

trans-2,4-azetidinedicarboxylic acid

cis-2,4-azetidinedicarboxylic acid

- 3,5-Piperidinedicarboxylic acid

2,3-Pyrrolidinedicarboxylic acid

- 2,3-Azetidinedicarboxylic acid

3,4-Pyrrolidinedicarboxylic acid

2,3-Dihydro-6H-1,4-dioxino [2,3-c] pyrrole-5,7-dicarboxylic acid

1-H-imidazole-2,4-dicarboxylic acid 1-butyl-1H-pyrrole-2,3-dicarboxylic acid

- 3-amino-1-oxide-2,4-pyridinedicarboxylic acid

2,3-dihydro-5-phenyl-1H-pyrrolizine-6,7-dicarboxylic acid

- 3a, 4,5,9b-tetrahydro-3H-cyclopenta [c] quinoline-4,6-dicarboxylic acid

3a, 4,5,9b-tetrahydro-3H-cyclopenta [c] quinoline-4,8-dicarboxylic acid

2,3-Dihydro-1H-1-imidazole-4,5-dicarboxylic acid

- 5-amino-6-methyl-Lutidinic acid

1H-lndole-3,7-dicarboxylic acid

3,3-dimethyl-2,6-piperidinedicarboxylic acid

- 1-butyl-2,5-pyrrolidinedicarboxylic acid

1H-lndole-4,6-dicarboxylic acid

1- (phenylmethyl) -3,4-pyrrolidinedicarboxylic acid

3- (carboxymethyl) -1H-indole-2,6-dicarboxylic acid

3,4-bis (2,2,2-trifluoroethyl) -1H-pyrrole-2,5-dicarboxylic acid

9-hexyl-9H-carbazole-3,6-dicarboxylic acid

3-methyl-5- (1-piperazinylsulfonyl) -2,4-thiophenedicarboxylic acid

2,3,4,9-tetrahydro-1H-carbazole-5,7-dicarboxylic acid

2,3-dimethyl-1H-indole-4,6-dicarboxylic acid

7-amino-1,4-dihydro-4-oxo-3,6-quinoline dicarboxylic acid

5-amino-3-methyl-2,4-thiophenedicarboxylic acid

- (m-tolylimino) di-Acetic acid

- (o-tolylimino) di-Acetic acid

- D-Cystathionine

- Phenethyliminodiacetic acid

2-Benzyl-2,2'-iminodiacetic acid

L-α-glutamyl-L-alanyl-L-Alanine

N, N'-Dibenzylethylenediaminediacetic acid

N-L-gamma-glutamyl-D-Alanine

- glycyl-L-glutamyl glycine

N- (carboxymethyl) -N- (tetrahydro-1,1-dioxido-3-thienyl) -Glycine

N- (2-carboxyethyl) -N-phenyl-beta-Alanine

N- (carboxymethyl) -N-octyl-glycine

N- (tert-Butoxycarbonyl) iminodiacetic acid

N- (carboxymethyl) -L-Alanine

N- (6-aminohexyl) -N- (carboxymethyl) -Glycine

N- (carboxymethyl) -N-tetradecyl-glycine

N- (1-carboxyethyl) -D-Alanine

N- (carboxymethyl) -D-Alanine

decyliminodiacetic acid

3,3 '- (dimethylhydrazono) bis-propanoic acid

N- (carboxymethyl) -N- [2- (2,6-dioxo-4-morpholinyl) ethyl] -glycine

- N-alpha-aspartyl-glycine

- N-beta-aspartyl-glycine NL-alpha-aspartyl-beta-Alanine

3,4-Xylylamino-N, N-diacetic acid

N- (1-carboxyethyl) -Alanine

N- (carboxymethyl) -Alanine

N, N'-methylenebis-glycine

N- (aminomethyl) -N- (carboxymethyl) -glycine

N- (aminomethyl) -N- (carboxymethyl) -glycine

- 2,2 '- (methylhydrazono) bis-acetic acid

N- (2-carboxyethyl) -N- (4-methylphenyl) -beta-alanine

N- (2-carboxyethyl) -N- (3-methylphenyl) -beta-alanine

3 - [(carboxymethyl) amino] -Alanine

- D-alpha-aspartyl-D-Alanine

N- (2-carboxyethyl) -N- (1-oxohexadecyl) -beta-alanine

N- (2-carboxyethyl) -N- (1-oxodecyl) -beta-alanine

N- (2-carboxyethyl) -N- (1-oxotetradecyl) -beta-alanine

amino acid [(carboxymethyl) thio] - acetic acid

N, N'-1,6-hexanediylbis-beta-Alanine

N- (carboxymethyl) -N-phenyl-beta-Alanine

N- (i-carboxyethyl) -L-Alanine

- L-glutamic acid

- L-aspartic acid.

It is also possible to mention, alone or as a mixture, the following tricarboxylic and tetracarboxylic acids, as well as their anhydrides:

3,3 ', 3 "- [1,2,3-propanetriyltris (oxy)] trispropanoic acid

- Pyrazinetricarboxylic acid

4- (3-carboxyphenyl) -2,5-pyridinedicarboxylic acid

- 3- (carboxymethyl) -2,4-quinolinedicarboxylic acid

3- (carboxymethyl) -1H-indole-2,5-dicarboxylic acid

- 3-C-carboxy-2-deoxy-D-threo-pentaric acid

- Hydroxycitric acid

D-glucopyranuronosyl-D-arabino-2-hexulofuranosidaric acid

- 2,3,5,6-Pyridinetetracarboxylic acid

N, N'-1, 2-ethanediylbis [N- (carboxymethyl) -β-alanine

L-α-aspartyl-L-Aspartic acid

4- [bis (carboxymethyl) amino] benzoic acid

7- [bis (carboxymethyl) amino] -Heptanoic acid

- N- (2-carboxyethyl) -Aspartic acid

3- [bis (2-carboxyethyl) amino] benzoic acid

4- [bis (2-carboxyethyl) amino] benzoic acid.

Preferably, 6,6 '- [(1,2-dioxo-1,2-ethanediyl) diimino] bishexanoic acid, 2,2'-sulphinylbisacetic acid, , 13-dioxo-3,5,12,14- tetraazahexadecanedioic acid, poly (ethylene glycol) disuccinate, poly (ethylene glycol) bis (carboxymethyl) ether, 8 - [(carboxymethyl) amino] -8-oxooctanoic acid, 2,2 '- [methylenebis acid] (Sulfonyl) bis-acetic acid, 4,4 '- (1,6-hexanediyldiimino) bis [4-oxo-butanoic acid], 4,9-dioxo-3,5,8,10-tetraazadodecanedioic acid 4 - [(1-carboxyethyl) amino] -4-oxo-butanoic acid, 6 - [(3-carboxy-1-oxopropyl) amino] hexanoic acid, N, N '- (1, 6-dioxo-1,6-hexanediyl) bis-glycine, N, N '- (1,3-dioxo-1,3-propanediyl) bis-glycine, 4,7,9,12-tetraoxapentadecanedioic acid, 4-Pyranone-2,6-dicarboxylic acid, 2,5-pyrazinedicarboxylic acid, 1H-1-imidazole-4,5-dicarboxylic acid, 2,6-pyrazinedicarboxylic acid, 2-acid, 5-Furanedicarboxylic acid, 3,4-Furanedicarboxylic acid, 2,3-Furanedicarboxylic acid, 2,5-diphenyl-3,4-furanedicarboxylic acid, 2-methyl-3,4-furanedicarboxylic acid, D-Tartaric acid, DL-Tartaric acid, L-Tar acid taric acid, galactaric acid, D-Glucaric acid; 2,5-Pyridinedicarboxylic acid, 2,5-

Pyrrolidinedicarboxylic acid, 1-phenyl-1H-pyrrole-3,4-dicarboxylic acid, 2,4-pyrrolidinedicarboxylic acid, 5-phenyl-2,4-pyrrolidinedicarboxylic acid, 3,5-Piperidinedicarboxylic acid , 3,4-Pyrrolidinedicarboxylic acid, 1-butyl-2,5-pyrrolidinedicarboxylic acid, 1 - (phenylmethyl) -3,4-

Pyrrolidinedicarboxylic acid, N- (2-carboxyethyl) -N-phenyl-β-alanine, N- (carboxymethyl) -N-octyl-glycine, N- (1-carboxyethyl) -L-alanine, L-acid glutamic acid, L-aspartic acid, N- (2-carboxyethyl) -Aspartic acid; and their mixtures.

2,2'-sulfinylbisacetic acid, 2,2'-[methylenebis (sulphonyl)] bis-acetic acid, N, N '- (1,3-dioxo-1,3) are particularly preferred. propanediyl) bisglycine, 2,5-Furanedicarboxylic acid, D-Tartaric acid, DL-Tartaric acid, L-Tartaric acid, Galactaric acid, L-glutamic acid, L-aspartic acid, and mixtures thereof.

It is also possible to use a lactone comprising at least one carboxylic group, in particular 1, 2 or 3 COOH groups. Preferably, the lactones comprise 5 to 14 carbon atoms, in particular 6 to 13 or even 6 to 12 carbon atoms.

The following lactones can be mentioned, alone or as a mixture:

- tetrahydro-2,2-dimethyl-5-oxo-3-furancarboxylic acid

- 4,7,7-trimethyl-3-oxo-2-oxabicyclo [2.2.1] heptane-1-carboxylic acid

- 4,6-dimethyl-2-oxo-2H-pyran-5-carboxylic acid

- 2-Oxo-2H-Pyran-5-carboxylic acid-2-Pentenedioic acid

- 2-oxo-2H-1-Benzopyran-3-carboxylic acid

2-oxo-2H-pyran-6-carboxylic acid

- 1,3-Dihydro-3-oxo-1-lsobenzofurancarboxylic acid

- 4-methyl-2-oxo-2H-1-Benzopyran-3-carboxylic acid - 1-Oxo-1H-2-Benzopyran-3-carboxylic acid

- 8-methoxy-2-oxo-2H-1-Benzopyran-3-carboxylic acid

- 2-Oxo-1-Oxaspiro [4.5] decane-4-carboxylic acid

2-oxo-2H-pyran-3-carboxylic acid

- 4-methyl-2-oxo-2H-pyran-6-carboxylic acid

- 3-oxo-3H-Naphtho [2,1-b] pyran-2-carboxylic acid

- tetrahydro-5-oxo-2,3-furandicarboxylic acid

- 1,3-Dihydro-3-oxo-4-lsobenzofurancarboxylic acid

- 1,3-Dihydro-1-oxo-5-lsobenzofurancarboxylic acid

- Hexahydro-2-oxo-3,5-methano-2H-cyclopenta [b] furan-7-carboxylic acid

- 6-methyl-2,4-dioxo-2H-pyran-5-carboxylic acid

- 1-oxo-3-lsochromancarboxylic acid

- 2-oxo-2H-1-Benzopyran-6-carboxylic acid

- 6-methyl-2-oxo-2H-1-Benzopyran-3-carboxylic acid

- 2,5-Dihydro-4,5,5-trimethyl-2-oxo-3-furancarboxylic acid

- tetrahydroc-5-oxo-2-phenyl-3-furancarboxylic acid

- tetrahydro-5-oxo-4-propyl-2-furoic acid

- 2-Butyl-2,3-dideoxy-pentaric acid

- 2-oxo-2H-1-Benzopyran-7-carboxylic acid

- 2-oxo-1-oxaspiro [4.4] nonane-4-carboxylic acid

- 4-ethyltetrahydro-5-oxo-2-furoic acid

5-ethyltetrahydro-2,3-dimethyl-6-oxo-2H-pyran-2-carboxylic acid

7-methoxy-2-oxo-2H-1-benzopyran-3-carboxylic acid

- 2-oxo-2H-1-Benzopyran-4-carboxylic acid

- 2-oxo-6-pentyl-2H-pyran-3-carboxylic acid

- 7-Oxo-4-Oxepanecarboxylic acid

3- (carboxymethyl) -2,3-dideoxy-pentaric acid

2,3-Dihydro-2-oxo-7-benzofurancarboxylic acid

1, 3,4,5-tetrahydro-1-oxo-2-benzoxepin-7-carboxylic acid

3,4-Dihydro-3-oxo-1H-2-benzopyran-6-carboxylic acid

2,3,4,5-tetrahydro-2-oxo-1-benzoxepin-7-carboxylic acid

3,4-Dihydro-1-oxo-1H-2-benzopyran-8-carboxylic acid

1, 3,4,5-tetrahydro-3-oxo-2-benzoxepin-9-carboxylic acid

1, 3,4,5-tetrahydro-3-oxo-2-benzoxepin-7-carboxylic acid

3,4-Dihydro-2-oxo-2H-1-benzopyran-8-carboxylic acid

1, 3,4,5-tetrahydro-1-oxo-2-benzoxepin-9-carboxylic acid

3,4-Dihydro-1-oxo-1H-2-benzopyran-6-carboxylic acid

3,4-Dihydro-3-oxo-1H-2-benzopyran-8-carboxylic acid

2,3,4,5-tetrahydro-2-oxo-1-benzoxepin-9-carboxylic acid

- The lactone of isocitric acid

5-oxo-2-tetrahydrofuranecarboxylic acid.

Preferably, tetrahydro-5-oxo-2,3-furandicarboxylic acid can be used, 1,3-dihydro-3-oxo-4-lsobenzofurancarboxylic acid, 1,3-dihydro-1-oxo-5-lsobenzofurancarboxylic acid, tetrahydro-5-oxo-2-phenyl-3-furanecarboxylic acid isocitric acid lactone, 5-oxo-2-tetrahydrofuranecarboxylic acid and mixtures thereof.

Said polycarboxylic acid and / or its cyclic anhydride and / or lactone, and mixtures thereof, preferably represents 1 to 40% by weight, especially 5 to 30% by weight, and more preferably 10 to 25% by weight, of the total weight of the final polycondensate.

The polycondensate according to the invention may further comprise a hydroxyl functional silicone (OH) and / or carboxylic acid (COOH). It can comprise 1 to 3 hydroxyl and / or carboxylic functions, and preferably comprises two hydroxyl functions or two carboxylic functions. These functions can be located at the end of the chain or in the chain, but advantageously at the end of the chain. Silicones having a weight average molecular weight (Mw) of between 300 and 20000, in particular 400 and 10,000, or even 800 and 4000, are preferably used. This silicone may be of formula:

in which :

- W and W are, independently of one another, OH or COOH; preferably W = W;

p and q are, independently of one another, equal to 0 or 1,

- R and R 'are, independently of one another, a divalent carbon radical, in particular hydrocarbon, saturated or unsaturated, or even aromatic, linear, branched and / or cyclic; comprising 1 to 12 carbon atoms, especially 2 to 8 carbon atoms, and optionally further comprising 1 or more heteroatoms selected from O, S and N, especially O (ether); in particular R and / or R 'may be of formula - (CH ₂ ) _a - with a = 1-12, and especially methylene, ethylene, propylene, phenylene; or of formula - [(CH ₂ ) _X O] _z - with x = 1, 2 or 3 and z = 1-10; in particular x = 2 or 3 and z = 1-4; and better x = 3 and z = 1.

- R1 to R6 are, independently of one another, a linear carbon radical, branched and / or cyclic, saturated or unsaturated or aromatic; comprising 1 to 20 carbon atoms, especially 2 to 12 carbon atoms; preferably, R1 to R6 are saturated or aromatic, and may especially be chosen from alkyl radicals, in particular the methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, octyl, decyl, dodecyl and octadecyl radicals, cycloalkyl radicals, in particular the cyclohexyl radical, aryl radicals, in particular phenyl radicals; and naphthyl, arylalkyl radicals, especially benzyl and phenylethyl, as well as tolyl and xylyl radicals.

m and n are, independently of each other, integers between 1 and 140, and are such that the weight average molecular weight (Mw) of the silicone is between 300 and 20,000, in particular between 400 and and 10,000 or even between 800 and 4000.

Mention may in particular be made of α, ω-diol or α, ω-dicarboxylic polyalkylsiloxanes, and in particular α, ω-diol polydimethylsiloxanes and α, ω-dicarboxylic polydimethylsiloxanes; the α, ω-diol or α, ω-dicarboxylic polyarylsiloxanes, and in particular the α, ω-diol or α, ω-dicarboxylic polyphenylsiloxanes; silanol-functional polyarylsiloxanes such as polyphenylsiloxane; silanol-functional polyalkylsiloxanes such as polydimethylsiloxane; silanol functional polyaryl / alkylsiloxanes such as polyphenyl / methylsiloxane or polyphenyl / propylsiloxane.

In particular, the α, ω-diol polydimethylsiloxanes having a weight-average molecular weight (Mw) of between 400 and 10,000, even between 500 and 5,000, and especially between 800 and 4000, will be used.

When present, said silicone may preferably represent 0.1 to 15% by weight, especially 1 to 10% by weight, or even 2 to 8% by weight, of the weight of the polycondate.

The polycondensate according to the invention does not comprise other families of monomers than those mentioned above; in particular, it does not include aromatic monocarboxylic acids. The fact that the polycondensate is capable of being obtained by reaction of the only monomers mentioned above does not, of course, exclude the presence, during the reaction, of catalyst, initiator, or any other usual adjuvant of the reaction reactions. esterification and polymerization.

Preferably, the polycondensate according to the invention has:

an acid number, expressed as mg of potassium hydroxide per g of polycondensate, greater than or equal to 1; in particular between 2 and 30, and even better between 2.5 and 15; and or

a hydroxyl number expressed in mg of potassium hydroxide per g of polycondensate, greater than or equal to 40; in particular between 40 and 120, and even better between 45 and 80.

These acid and hydroxyl numbers can be easily determined by those skilled in the art by the usual analytical methods.

Preferably, the polycondensate according to the invention has a weight average molecular weight (Mw) of between 1500 and 300 000, even between 2000 and 200 000, and especially between 3000 and 150 000. The average molecular weight can be determined by gel permeation chromatography or by light scattering, depending on the solubility of the polymer under consideration.

One of the important characteristics of the polymer according to the invention is that it has a very high viscosity, which can be characterized as follows. At 25 ° C., when this viscosity can be measured (in particular when the polymer is not in solid form), it is strictly greater than 5000 mPa.s (centipoises), especially between 5100 and 10000 mPa.s. even between 6000 and 9500 mPa.s.

Preferably, the polycondensate according to the invention has a viscosity, measured at 110 ^° C., of between 100 and 4000 mPa.s, especially between 130 and 3500 mPa.s, or even between 150 and 3000 mPa.s and even better between 200 and 3000 mPa.s. and 2500 mPa.s. More preferably, the polycondensate according to the invention has a viscosity, measured at 80 ⁰ C, of between 150 and 5000 mPa.s, in particular between 200 and 4000 mPa.s, or between 250 and 3000 mPa.s and even better between 300 and 2000 mPa.s.

This viscosity can be measured using a BROOKFIELD CAP 1000+ cone-plane viscometer. The adapted cone-plane is determined by the person skilled in the art, on the basis of his knowledge; especially :

- Between 50 and 500 mPa.s, a 02 cone can be used

- between 500 and 1000 mPa.s: cone 03

- between 1000 and 4000 mPa.s: cone 05

- between 4000 and 10000 mPa.s: cone 06.

Furthermore, the polycondensate is advantageously soluble in the oily cosmetic media usually employed, and in particular in vegetable oils, alkanes, fatty esters, fatty alcohols, silicone oils, and more particularly in media comprising isododecane, Parleam, isononyl isononanoate, octyldodecanol, phenyl trimethicone, C12-C15 alkyl benzoate and / or D5 (decamethylcyclopentasiloxane).

"Soluble" means that the polymer forms a clear solution in at least one solvent chosen from isododecane, Parleam, isononyl isononanoate, octyldodecanol and C12-C15 alkyl benzoate, at least 50% by weight, at 70 ^° C. Some compounds even have a particularly advantageous solubility in certain fields of application, namely a solubility in at least one of the solvents mentioned above, at least 50 % by weight, at 25 ° C.

The polycondensate according to the invention can be prepared by the esterification / polycondensation processes usually employed by those skilled in the art. As an illustration, a general method of preparation consists of: - mixing the polyols and the nonaromatic monocarboxylic acids,

to heat the mixture under an inert atmosphere, first up to the melting temperature (generally 100-130 ^° C.) and then at a temperature of between 150 ^° C. and 220 ^° C. until the monocarboxylic acids have been consumed completely (reached when the acid number is less than or equal to 1), preferably by gradually distilling the water formed, and then

to optionally cool the mixture to a temperature of between 90 and 150 ° C.,

to add the polycarboxylic acids and / or the cyclic anhydrides and / or the lactones, and optionally the silicones with hydroxyl or carboxyl functions, in one go or in a sequenced manner, then

to be heated again to a temperature of less than or equal to 220 ^° C., in particular of between 170 ° and 220 ° C., preferably continuing to eliminate the water formed, until the characteristics required in terms of index are obtained; acid, viscosity, hydroxyl number and solubility.

It is possible to add conventional esterification catalysts, for example of the sulfonic acid type (especially at a concentration by weight of between 1 and 10%) or titanate type (in particular at a concentration by weight of between 5 and 100 ppm). 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. Advantageously, no catalyst or solvent is used.

Said preparation process may further comprise a step of adding at least one antioxidant agent to the reaction medium, in particular at a concentration by weight of between 0.01 and 1%, relative to the total weight of monomers, so as to limit any damage caused by prolonged heating. The antioxidant may be of primary or secondary type, and may be selected from hindered phenols, aromatic secondary amines, organophosphorus compounds, sulfur compounds, lactones, acrylated bisphenols; and their mixtures. Among the particularly preferred antioxidants, there may be mentioned BHT, BHA, TBHQ, 1,3,5-trimethyl-2,4,6, tris (3,5-di-tertbutyl-4-hydroxybenzyl) benzene , octadecyl-3,5, di-tert-butyl-4-hydroxycinnamate, tetrakis-methylene-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate methane, octadecyl-3- (3) 4,5-di-tert-butyl-4-hydroxyphenyl) propionate 2,5-di-tert-butyl hydroquinone, 2,2-methyl-bis- (4-methyl-6-tert-butylphenol), 2,2-methylene-bis- (4-ethyl-6-tert-butylphenol), 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-tert-butyl-4-hydroxphenyl) propionate, especially that marketed by CIBA under the name IRGANOX 1076; 1,3,5-tris (3,5-di-tert-butyl-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; the 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 PS800; bis (2,4-di-tertbutyl) pentaerythritol diphosphite, in particular that marketed by CIBA under the name IRGAFOS 126; bis (2,4-bis) [2-phenylpropan-2-yl] phenyl) pentaerythritol diphosphite, triphenylphosphite, (2,4-di-tertbutylphenyl) 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-tert-butyl-4-hydroxy-hydrocinnamamide) and of tris (2,4-di-tert-butylphenyl) phosphate, in particular that marketed by CIBA under the name Irganox B 1171 ; tetrakis (2,4-di-tert-butylphenyl) phosphite, in particular that marketed by CIBA under the name IRGAFOS P-EPQ; distearylthiodipropionate, 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.

The polycondensates according to the invention can be used very advantageously in a composition, in particular a cosmetic or pharmaceutical composition, which moreover comprises a physiologically, in particular cosmetically or pharmaceutically acceptable medium, that is to say a medium which is compatible with cutaneous tissues. like the skin of the face or body, and keratin materials such as hair, eyelashes, eyebrows and nails.

The amount of polycondensate present in the compositions depends, of course, on the type of composition and the desired properties and can vary within a very wide range, generally between 0.1 and 70% by weight, preferably between 1 and 50% by weight, especially between 10 and 45% by weight, or even between 20 and 40% by weight, and better still between 25 and 35% by weight, relative to the weight of the final cosmetic or pharmaceutical 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 a liquid fatty phase, which may constitute a solvent medium for the polymers according to the invention, and which may comprise at least one compound chosen from oils and / or solvents of mineral, animal, vegetable or synthetic, carbonaceous, hydrocarbon, fluorinated and / or silicone, volatile or nonvolatile, alone or in mixture to the extent 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, or lips, 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), whereas by 'non-volatile' a compound remaining on the keratin materials or the lips at room 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).

Preferably, the physiologically acceptable medium of the composition according to the invention may comprise, in a liquid fatty phase, at least one oil and / or a solvent which may be chosen from, alone or as a mixture:

1 / esters of monocarboxylic acids with monoalcohols and polyalcohols; advantageously, said ester is a C12-C15 alkyl benzoate or has the following formula: R'rCOO-R'2 where:

R ' ₁ represents a linear or branched alkyl radical of 1 to 40 carbon atoms, preferably 7 to 19 carbon atoms, optionally comprising one or more ethylenic double bonds, optionally substituted and whose hydrocarbon chain may be interrupted by one or more several heteroatoms chosen from N and O and / or one or more carbonyl functions, and R'2 represents a linear or branched alkyl radical of 1 to 40 carbon atoms, preferably of 3 to 30 carbon atoms and better still of 3 to 20 carbon atoms. carbon atoms, optionally comprising one or more ethylenic double bonds, optionally substituted and whose hydrocarbon chain can be interrupted by one or more heteroatoms chosen from N and O and / or one or more carbonyl functions.

By "optionally substituted" is meant that R'1 and / or R'2 may carry one or more substituents selected, for example, from groups comprising one or more heteroatoms selected from O and / or N, such as amino, amino , alkoxy, hydroxyl.

Examples of the R ' ₁ groups are those derived from the preferably higher fatty acids selected from the group consisting of acetic, propionic, butyric, caproic, caprylic, pelargonic, capric, undecanoic, lauric, myristic, palmitic, stearic, isostearic. , arachidic, behenic, oleic, linolenic, linoleic, oleostearic, arachidonic, erucic, and mixtures thereof. Preferably, R'1 is an unsubstituted branched alkyl group of 4 to 14 carbon atoms, preferably 8 to 10 carbon atoms and R ₂ is an unsubstituted branched alkyl group of 5 to 15 carbon atoms, preferably from 9 to 11 carbon atoms.

In particular, mention may be made, preferably, of C ₄ -C ₄ esters, optionally incorporating into their hydrocarbon chain one or more heteroatoms of N and O and / or one or more carbonyl functions; and more particularly purcellin oil (cetostearyl octanoate), isononyl isononanoate, isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, octyl-2 stearate dodecyl, octyl-2-dodecyl erucate, isostearyl isostearate, C ₂ to C ₅ alcohol benzoate, hexyl laurate, diisopropyl adipate; and the heptanoates, octanoates, decanoates or ricinoleates of alcohols or polyalcohols, for example of fatty alcohols such as propylene glycol dioctanoate, as well as isopropyl N-lauroyl sarcosinate (in particular Eldew-205SL from Ajinomoto); hydroxylated esters such as isostearyl lactate, diisostearyl malate; and pentaerythritol esters; branched C8-C16 esters, especially isohexyl neopentanoate.

2 / hydrocarbon vegetable oils with a high triglyceride content consisting of esters of fatty acids and of glycerol, the fatty acids of which may have various chain lengths of C ₄ to C ₂₄ , the latter may be linear or branched, saturated or unsaturated; these oils include wheat germ, maize, sunflower, shea, castor oil, sweet almond, macadamia, apricot, soya, rapeseed, cotton, alfalfa, poppy, pumpkin, sesame, squash, avocado, hazelnut, grape seed or black currant, evening primrose, millet, barley, quinoa, olive, rye, safflower, of bancoulier, passionflower, muscat rose, jojoba, palm, calophyllum; or triglycerides of caprylic / capric acids such as those sold by Stearinerie Dubois or those sold under the names "Miglyol 810 ^®", "812 ^®" and "818 ^®" by the company Dynamit Nobel.

3 / alcohols, and especially C6-C32 monoalcohols, in particular C12-C26, such as oleic alcohol, linoleic alcohol, linolenic alcohol, isostearyl alcohol, 2-hexyldecanol, 2 -butyloctanol, 2-undecylpentadecanol and octyldodecanol;

4 / linear or branched hydrocarbon oils, volatile or not, of synthetic or mineral origin, which may be chosen from hydrocarbon-based oils having from 5 to 100 carbon atoms, and in particular petroleum jelly, polydecenes, hydrogenated polyisobutenes such as Parleam, squalane, perhydrosqualine and their mixtures.

It is more particularly possible to mention linear, branched and / or cyclic C5-C48 alkanes, and preferably branched C8-C16 alkanes such as C8-C16 isoalkanes of petroleum origin (also known as isoparaffins); especially decane, heptane, dodecane, cyclohexane; as well as isododecane, isodecane, isohexadecane.

5 / silicone oils, volatile or non-volatile; Volatile silicone oils that may be mentioned include volatile linear or cyclic silicone oils, in particular those having a viscosity of less than 8 centistokes, and especially having from 2 to 10 silicon atoms, these silicones possibly comprising alkyl or alkoxy groups. having from 1 to 22 carbon atoms; and in particular octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, demethyltetrasiloxane, dodecamethylpentasiloxane, methylhexyldimethylsiloxane and mixtures thereof.

The nonvolatile silicone oils that may be used according to the invention may be polydimethylsiloxanes (PDMSs), polydimethylsiloxanes comprising alkyl or alkoxy groups, during and / or at the end of the silicone chain, groups each having from 2 to 24 carbon atoms. phenyl silicones such as phenyltrimethicones, phenyldimethicones, phenyltrimethylsiloxydiphenylsiloxanes, diphenyldimethicones, diphenylmethyldiphenyltrisiloxanes and 2-phenylethyl trimethylsiloxysilicates.

Preferably, the physiologically acceptable medium of the composition according to the invention comprises, in a liquid fatty phase, at least one oil and / or a solvent chosen from, alone or as a mixture, isododecane, Parleam, the isononanoate of isononyl, octyldodecanol, phenyl trimethicone, C12-C15 alkyl benzoates and / or D5 (decamethylcyclopentasiloxane).

The liquid fatty phase may further comprise additional oils and / or solvents, which may be chosen from, alone or as a mixture:

fluorinated oils such as perfluoropolyethers, perfluoroalkanes such as perfluorodecalin, perfluorodamantanes, monoesters, diesters and triesters of perfluoroalkylphosphates and fluorinated ester oils;

- oils of animal origin;

- C ₆ to C ₄₀ ethers, especially C ₁₀ -C ₄₀ ; propylene glycol ethers which are liquid at room temperature, such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate or dipropylene glycol mono-butyl ether;

- C8-C32 fatty acids, such as oleic acid, linoleic acid, linolenic acid and mixtures thereof.

- Bifunctional oils, comprising two functions selected from ester and / or amide and comprising from 6 to 30 carbon atoms, in particular 8 to 28 carbon atoms, more preferably 10 to 24 carbons, and 4 heteroatoms selected from O and N; preferably the amide and ester functions being in the chain;

ketones which are liquid at ambient temperature (25 ° C.), such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, isophorone, cyclohexanone and acetone;

aldehydes that are liquid at room temperature, such as benzaldehyde, acetylene, taldéhyde;

The liquid fatty phase may represent 1 to 90% by weight of the composition, in particular from 5 to 75% by weight, in particular from 10 to 60% by weight, or even 25 to 55% by weight, of the total weight of the composition. .

The composition according to the invention may advantageously comprise a thickening agent which may in particular be chosen from:

- the particular hydrophobic silicas, such as those described in EP-A-898960, for example, under the references "Aerosil R812 ^®" by Degussa, "CAB-O-SIL TS-530 ^®", "CAB O-SIL TS-610 ^® "," CAB-O-SIL TS-720 ^® "by the company Cabot," AEROSIL R972 ^® "," AEROSIL R974 ^® "by Degussa;

clays, such as montmorillonite, modified clays, such as benzones, stearalkonium hectorite, stearalkonium bentonite,

polysaccharide alkyl ethers (in particular in which the alkyl group contains from 1 to 24 carbon atoms, preferably from 1 to 10, better still from 1 to 6, and more particularly from 1 to 3, such as those described in EP-A); A-898958.

The amount of thickening agent in the composition according to the invention may range from 0.05 to 40% by weight, relative to the total weight of the composition, preferably from 0.5 to 20% and better still from 1 to 15%. in weight.

The composition according to the invention may also comprise at least one wax of vegetable, animal, mineral, synthetic or even silicone origin. In particular, hydrocarbon waxes such as beeswax can be mentioned alone or as a mixture; Carnauba wax, Candellila wax, Ouricoury wax, Japan wax, cork fiber wax or sugar cane wax; paraffin waxes of lignite; microcrystalline waxes; lanolin wax; the wax of Montan; ozokerites; polyethylene waxes; waxes obtained by Fischer-Tropsch synthesis; hydrogenated oils, fatty esters and concrete glycerides at 25 ° C. It is also possible to use silicone waxes, among which mention may be made of alkyls, alkoxys and / or polymethylsiloxane esters.

The amount of wax in the composition according to the invention may range from 0.1 to 70% by weight, relative to the total weight of the composition, preferably from 1 to 40% by weight, and better still from 5 to 30% by weight. weight.

The composition according to the invention may also comprise one or more dyestuffs chosen from pulverulent compounds such as pigments, fillers, nacres and flakes, and / or fat-soluble or water-soluble dyes. The dyestuffs, in particular pulverulent, may be present in the composition in a content of from 0.01 to 50% by weight, relative to the weight of the composition, preferably from 0.1 to 40% by weight, or even from 1 to 30% by weight. By pigments, it is necessary to understand particles of any shape, white or colored, mineral or organic, insoluble in the physiological medium, intended to color the composition. By nacres, it is necessary to understand particles of any iridescent form, in particular produced by certain molluscs in their shell or else synthesized.

The pigments may be white or colored, inorganic and / or organic, interferential or not. Among the inorganic pigments, mention may be made of titanium dioxide, optionally surface-treated, zirconium or cerium oxides, as well as iron or chromium oxides, manganese violet, ultramarine blue, hydrate of chrome and ferric blue. Among the organic pigments, mention may be made of carbon black, D & C type pigments, and lacquers based on cochineal carmine, barium, strontium, calcium, aluminum. The pearlescent pigments may be chosen from white pearlescent pigments such as mica coated with titanium, or bismuth oxychloride, colored pearlescent pigments such as titanium mica with iron oxides, titanium mica with in particular ferric blue or chromium oxide, titanium mica with an organic pigment of the aforementioned type as well as pearlescent pigments based on bismuth oxychloride. The fillers can be mineral or organic, lamellar or spherical. Mention may be made of talc, mica, silica, kaolin, powders of nylon and polyethylene, poly-β-alanine and polyethylene, Teflon, lauroyl-lysine, starch, nitrile and the like. boron, tetrafluoroethylene polymer powders, hollow microspheres such as Expancel (Nobel Industry), polytrap (Dow Corning) and silicone resin microspheres (Toshiba Tospearls, for example), precipitated calcium carbonate, magnesium carbonate and hydrocarbonate, hydroxyapatite, hollow silica microspheres (SILICA BEADS from MAPRECOS), glass or ceramic microcapsules, metallic soaps derived from organic carboxylic acids having from 8 to 22 atoms carbon, preferably from 12 to 18 carbon atoms, for example zinc, magnesium or lithium stearate, zinc laurate, magnesium myristate. Liposoluble dyes are for example Sudan Red, DC Red 17, DC Green 6, β-carotene, soybean oil, Sudan Brown, DC Yellow, 11, DC Violet 2, Orange DC 5 , yellow quinoline. They may represent 0.01 to 20% of the weight of the composition and better still 0.1 to 6%. The water-soluble dyes are, for example, beet juice, methylene blue and may represent 0.01 to 6% 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 especially fat-soluble film-forming polymers, and mixtures thereof. Of course, those skilled in the art will take care to choose this or these optional compounds complementary, and / or their amount, such that the advantageous properties of the composition for use according to the invention are not, or not substantially impaired by the addition envisaged.

The compositions according to the invention may be in any form acceptable and customary for a cosmetic or pharmaceutical composition. They can therefore be in the form of a suspension, a dispersion including oil in water with vesicles; an organic or oily solution optionally thickened or even gelled; an oil-in-water, water-in-oil or multiple emulsion; a gel or a mousse; an oily or emulsified gel; a dispersion of vesicles, in particular lipids; a two-phase or multiphase lotion; a spray; a lotion, a cream, an ointment, a soft paste, an ointment, a solid cast or molded and especially stick or cup, or compacted solid.

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, of the application envisaged for the composition.

The compositions in accordance with the invention having improved gloss and gloss strength compared with the state of the art, they can be used for the care or the makeup of keratin materials such as the hair, the skin, the skin and the skin. eyelashes, eyebrows, nails, lips, scalp and more particularly for makeup of lips, eyelashes and / or face. They can therefore be in the form of a care product and / or makeup of the skin of the body or face, lips, eyelashes, eyebrows, hair, leather hair or nails; a suntan or self-tanning product; a hair product including coloring, conditioning and / or hair care; they are advantageously in the form of mascara, lipstick, lip gloss (gloss), blush or eyelid, foundation.

The subject of the invention is also a process for the cosmetic treatment of keratin materials, in particular the skin of the body or of the face, the lips, the nails, the hair and / or the eyelashes, comprising the application on the said materials of a cosmetic composition as defined above. This method according to the invention allows in particular the care or makeup of the lips, by applying a composition of lipstick or lip gloss (gloss) according to the invention.

The invention is further illustrated by the following examples.

Example 1 Synthesis of Pentaerythrityl Isophthalate / Isostearate In a reactor equipped with a mechanical stirrer, an inlet of argon and a distillation system, 280 g of isostearic acid and 100 g of pentaerythritol are charged and then heated gradually, under a gentle stream of argon at 110-130 ^° C. to obtain a homogeneous solution. The temperature is then gradually increased to 180 ^° C. and maintained for about 2 hours. The temperature is again raised to 220 ° C and maintained until an acid number of less than or equal to 1 is obtained, which takes about 11 hours. It is cooled to a temperature of between 100 and 130 ^° C., then 100 g of isophthalic acid are introduced and heated again gradually to 220 ° C. for about 11 hours.

420 g of pentaerythrityl isophthalate / isostearate polycondensate are thus obtained in the form of a very thick oil.

The polycondensate has the following characteristics:

- Acid number = 3.5 - η110 ° C = 2280 mPa.s

Example 2 Synthesis of diqlyceryl sebacate / isostearate

In a reactor equipped with mechanical stirring, an inlet of argon and a distillation system, 295 g of isostearic acid, 100 g of diglycerol and 105 g of sebacic acid are charged and then the mixture is gradually heated to 220.degree. ⁰ C and the temperature is maintained for about 7 hours.

430 g of polycondensate are thus obtained in the form of a very thick oil. The polycondensate has the following characteristics:

- Acid number = 5.3 - η110 ° C = 1040 mPa.s

Example 3 Synthesis of qlyceryl sebacate / isostearate

In a reactor equipped with a mechanical stirrer, an argon inlet and a distillation system, 280 g of isostearic acid, 85 g of glycerol and 135 g of sebacic acid are charged and the mixture is gradually heated to 220 ° C. ⁰ C and the temperature is maintained for about 7 hours.

410 g of polycondensate are thus obtained in the form of a thick oil. The polycondensate has the following characteristics:

- Acid number = 6.4 - η80 ° C = 164 mPa.s

Example 4 Synthesis of sorbitol sebacate / isostearate In a reactor equipped with a mechanical stirrer, an inlet of argon and a distillation system, 305 g of isostearic acid, 105 g of sorbitol and 90 g of sebacic acid are charged and then heated up to 180 ⁰ C and the temperature is maintained for about 30 hours.

400 g of polycondensate are thus obtained in the form of a very thick oil. The polycondensate has the following characteristics:

- Acid number = 20.8

- η80 ° C = 584 mPa.s

Example 5

A lipstick having the following composition was prepared:

polycondensate of Example 1 30 g

- polyethylene wax 11 g

- pigments and fillers 7 g

- Parléam (hydrogenated isoparaffin) qs 100 g

After application to the lips, a colored and glossy film is obtained which remains bright for at least 2 hours.

A lipstick can be prepared similarly by replacing the polycondensate of Example 1 with that of Example 2, 3 or 4.

Example 6 Synthesis of diqlyceryl isostearate / qlutamate / sebacate

In a reactor equipped with mechanical stirring, an inlet of argon and a distillation system, 280 g of isostearic acid, 115 g of diglycerol, 15 g of glutamic acid and 90 g of sebacic acid are charged, then heated to 230 ⁰ C and the temperature is maintained for about 5 hours.

430 g of polycondensate are thus obtained in the form of a thick oil. The polycondensate has the following characteristics:

- Acid number = 8.0

- η80 ° C = 300 mPa.s

Example 7 Synthesis of qlyceryl sebacate / trans-aconitate / isostearate

In a reactor equipped with a mechanical stirrer, an inlet of argon and a distillation system, 270 g of isostearic acid, 90 g of glycerol, 35 g of trans-aconitic acid and 105 g of sebacic acid are charged. then heated gradually to 220 ⁰ C and the temperature is maintained for about 8 hours. 440 g of polycondensate are thus obtained in the form of a thick oil. The polycondensate has the following characteristics:

- Acid number = 1, 2

- η80 ° C = 228 mPa.s

EXAMPLE 8 Synthesis of Diαlvceryl Sebacate / Trans-Aconitate / Isostearate

In a reactor equipped with mechanical agitation, an inlet of argon and a distillation system, 295 g of isostearic acid, 105 g of diglycerol, 15 g of trans-aconitic acid and 85 g of sebacic acid are charged. then heated gradually to 220 ⁰ C and the temperature is maintained for about 7 hours.

450 g of polycondensate are thus obtained in the form of a thick oil. The polycondensate has the following characteristics:

- Acid number = 4.2

- η80 ° C = 384 mPa.s

Example 9 Synthesis of Diαlvceryl Sebacate / Trans-Aconitate / Itaconate / Isostearate

In a reactor equipped with a mechanical stirrer, an inlet of argon and a distillation system, 280 g of isostearic acid, 115 g of diglycerol, 15 g of trans-aconitic acid, 10 g of potassium are charged. itaconic anhydride and 80 g of sebacic acid and then gradually heated to 220 ⁰ C and the temperature is maintained for about 8 hours.

450 g of polycondensate are thus obtained in the form of a thick oil. The polycondensate has the following characteristics:

- Acid number = 4.5

- η80 ° C = 555 mPa.s

Claims

A cosmetic or pharmaceutical composition comprising, in a cosmetically or pharmaceutically acceptable medium, at least one polycondensate obtainable by reaction of the following monomers only:

from 10 to 30% by weight, relative to the total weight of the polycondensate, of one or more polyols comprising 3 to 6 hydroxyl groups;

from 30 to 80% by weight, relative to the total weight of the polycondensate, of one or more linear or branched and / or cyclic saturated or unsaturated non-aromatic monocarboxylic acids comprising 6 to 32 carbon atoms;

from 1 to 40% by weight, relative to the total weight of the polycondensate, of one or more polycarboxylic acids and / or cyclic anhydrides of such a polycarboxylic acid and / or lactones comprising at least one COOH group; and optionally from 0.1 to 15% by weight, based on the total weight of the polycondensate, of one or more hydroxyl and / or carboxylic functional silicones.

2. Composition according to the preceding claim, wherein the polyol is chosen from, alone or as a mixture:

triols, such as 1,2,4-butanetriol, 1,2,6-hexanetriol, trimethylolethane, trimethylolpropane and glycerol;

tetraols, such as pentaerythritol, erythritol, diglycerol or ditrimethylolpropane;

pentols such as xylitol,

hexols such as sorbitol and mannitol; or dipentaerythritol or triglycerol.

3. Composition according to one of the preceding claims, wherein the polyol, or the polyol mixture, represents 12 to 25% by weight, and more preferably 14 to 22% by weight, of the total weight of the polycondensate.

4. Composition according to one of the preceding claims, wherein the non-aromatic monocarboxylic acid is chosen from, alone or as a mixture:

saturated monocarboxylic acids such as caproic acid, caprylic acid, isoheptanoic acid, 4-ethylpentanoic acid, 2-ethylhexanoic acid, 4,5-dimethylhexanoic acid, acid 2-heptylheptanoic acid, 3,5,5-trimethylhexanoic acid, octanoic acid, isooctanoic acid, nonanoic acid, decanoic acid, isononanoic acid, lauric acid, acid tridecanoic acid, myristic acid, palmitic acid, stearic acid, isostearic acid, arachidic acid, behenic acid, cerotic acid (hexacosanoic acid); cyclopentanecarboxylic acid, cyclopentaneacetic acid, 3-cyclopentylpropionic acid, cyclohexanecarboxylic acid, cyclohexylacetic acid, 4-cyclohexylbutyric acid; unsaturated but nonaromatic monocarboxylic acids, such as caproleic acid, obtusilic acid, undecylenic acid, dodecylenic acid, linderic acid, myristoleic acid, physétérique acid, tsuzuique acid , palmitoleic acid, oleic acid, petroselinic acid, vaccenic acid, elaidic acid, gondoic acid, gadoleic acid, erucic acid, cetoleic acid, nervonic acid , linoleic acid, linolenic acid, arachidonic acid.

5. Composition according to one of the preceding claims, wherein the nonaromatic monocarboxylic acid, or the mixture of said acids, represents 40 to 75% by weight, or even 45 to 70% by weight, and more preferably 50 to 65% by weight. , the total weight of the final polycondensate.

6. Composition according to one of the preceding claims, wherein the polycarboxylic acid or its anhydride is chosen from, alone or as a mixture,

linear, branched and / or cyclic, saturated or unsaturated or even aromatic polycarboxylic acids comprising 2 to 50 carbon atoms; said acid comprising at least two carboxylic groups COOH; and may optionally comprise 1 to 10 heteroatoms, identical or different, selected from O, N and S; and / or optionally comprising at least one perfluorinated radical chosen from -CF ₂ - (divalent) or -CF _3, and their anhydrides;

saturated or unsaturated, linear or branched chain polycarboxylic acids comprising at least one heteroatom chosen from O, N and / or S, especially 1 to 10 identical or different heteroatoms, and / or comprising at least one perfluorinated radical -CF ₂ or -CF ₃ and also having at least 2 carboxylic groups COOH; and their anhydrides;

saturated or unsaturated or even aromatic heterocyclic polycarboxylic acids comprising at least one heteroatom chosen from O, N and / or S, in particular 1 to 10 identical or different heteroatoms, and at least 2 carboxylic groups COOH; and their anhydrides;

- Polycarboxylic acids derived from sugar, obtainable in particular by oxidation of an aldose, and comprising at least 2 carboxylic groups COOH; and their anhydrides;

itaconic anhydride and 1,4-monoanhydride of 1,4,5,8-naphthalenetetracarboxylic acid;

polycarboxylic amino acids (including heterocyclic acids), that is to say polycarboxylic acids with a saturated or unsaturated, linear, branched and / or cyclic chain, optionally comprising at least one heteroatom chosen from O, N and / or S , in particular 1 to 10 identical or different heteroatoms, and / or optionally comprising at least one perfluorinated radical -CF ₂ - or -CF ₃ ; and further comprising at least one primary, secondary or tertiary amine function and further having at least 2 COOH carboxylic groups; and their anhydrides.

7. Composition according to one of the preceding claims, in which the polycarboxylic acid, or its anhydride, is chosen from, alone or as a mixture,

decanedioic acid, dodecanedioic acid, cyclopropanedicarboxylic acid, cyclohexanedicarboxylic acid, cyclobutanedicarboxylic acid, naphthalene-1,4-dicarboxylic acid, naphthalene-2,3-dicarboxylic acid, naphthalene-2,6-dicarboxylic acid, suberic acid, oxalic acid, malonic acid, succinic acid, phthalic acid, terephthalic acid, isophthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, pimelic acid, sebacic acid, azelaic acid, glutaric acid, adipic acid, fumaric acid, maleic acid, itaconic acid, dimers fatty acids (especially C36); cyclohexanetricarboxylic acid, trimellitic acid, 1,2,3-benzenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid; aconitic acid;

- Butanetetracarboxylic acid and pyromelitic acid,

2,2 '- [1,5-pentanediylbis (thio)] bis-acetic acid

6,6 '- [(1,2-dioxo-1,2-ethanediyl) diimino] bis-hexanoic acid

2,2'-sulfinylbisacetic acid

4,13-dioxo-3,5,12,14-Tetraazahexadecanedioic acid

Poly (ethylene glycol) disuccinate, in particular of 250-600 mass

Poly (ethylene glycol) bis (carboxymethyl) ether, in particular of mass 250-600

Poly (oxy (1, 2-dicarboxy-1,2-ethanediyl)], in particular DP <10

- 8 - [(carboxymethyl) amino] -8-oxooctanoic acid

2,2 '- [methylenebis (sulfonyl)] bis-acetic acid

4,4 '- (1,6-hexanediyldiimino) bis [4-oxo-butanoic acid]

- 4,9-dioxo-3,5,8,10-tetraazadodecanedioic acid

- 4 - [(1-carboxyethyl) amino] -4-oxo-butanoic acid

- 6 - [(3-Carboxy-1-oxopropyl) amino] hexanoic acid

N, N '- (1,6-dioxo-1,6-hexanediyl) bis-glycine

N, N '- (1,6-dioxo-1,6-hexanediyl) bis-phenylalanine

N, N '- (1,3-dioxo-1,3-propanediyl) bis-glycine

4,4 '- [(1,4-dioxo-1,4-butanediyl) diimino] bis-butanoic acid

4,4 '- [(1,6-dioxo-1,6-hexanediyl) diimino] bis-butanoic acid

- 6,6 '- [1,6-hexanediylbis (iminocarbonylimino)] bis-hexanoic acid

- N-benzoyl-S- (carboxymethyl) - Cysteine

N, N '- (2,2,3,3-tetrafluoro-1,4-dioxo-1,4-butanediyl) bis-glycine

N, N '- (2,2,3,3-tetrafluoro-1,4-dioxo-1,4-butanediyl) bis-alanine

4,4 '- [(2,2,3,3-tetrafluoro-1,4-dioxo-1,4-butanoic acid)

N, N '- (1,5-dioxo-1,5-pentanediyl) bis-glycine

N, N '- (1,9-dioxo-1,9-nonanediyl) bis-glycine

N, N '- (1,10-dioxo-1, 10-decanediyl) bis [N-methylglycine]

- The bis (3-carboxypropyl) ester of propanedioic acid

- 7,16-dioxo-6,8,15,17-Tetraazadocosanedioic acid

- N-benzoyl-N- (2-carboxyethyl) -Glycine - [2 - [(2-carboxymethyl) amino] -2-oxoethyl] - benzenepropanoic acid

- [2 - [(2-Carboxyethyl) amino] -2-oxoethyl] - benzenepropanoic acid

- 4,7,9,12-Tetraoxapentadecanedioic acid

- 2,3-Pyridinedicarboxylic acid

- 4-Pyranone-2,6-dicarboxylic acid

- 2,5-Pyrazinedicarboxylic acid

- 2,5-Pyridinedicarboxylic acid

- 2,3-Benzofurandicarboxylic acid

- 7-oxabicyclo [2.2.1] heptane-2,3-dicarboxylic acid

- 3,4-Pyridinedicarboxylic acid

- 2,4-Pyridinedicarboxylic acid

- 3,5-Pyridinedicarboxylic acid

- 2,6-Pyridinedicarboxylic acid

- 1H-1midazole-4,5-dicarboxylic acid

- 2,3-Quinolinedicarboxylic acid

- 6,6,7,7-tetrafluoro-3-Oxabicyclo [3.2.0] heptane-2,4-dicarboxylic acid

2,6-Pyrazinedicarboxylic acid

2,6-Dimethyl-3,5-pyridinedicarboxylic acid

- 1-phenyl-1H-Pyrazole-3,4-dicarboxylic acid

- 2,5-Furanedicarboxylic acid

- 3,4-Furanedicarboxylic acid

- 1, 2,5-Thiadiazole-3,4-dicarboxylic acid

- 1,4-Dihydro-1,2,4,5-tetrazine-3,6-dicarboxylic acid

- 2,3-Furanedicarboxylic acid

3,4-Thiophenedicarboxylic acid

- 1H-1, 2,3-Triazole-4,5-dicarboxylic acid

- 2-Methylimidazole-4,5-dicarboxylic acid

- 2,4-Quinolinedicarboxylic acid

- Naphtho [2,1-b] furan-1,2-dicarboxylic acid

- 3,4-Quinolinedicarboxylic acid

- 7-Oxabicyclo [2.2.1] hept-5-ene-2,3-dicarboxylic acid

- 2,3-Quinoxalinedicarboxylic acid

- 1,4-Piperazinedicarboxylic acid

- 2,5-Dimethyl-3,4-Furandicarboxylic acid

- tetrahydro-2,5-thiophenedicarboxylic acid

- 4-phenyl-3,5-pyridinedicarboxylic acid

- Thieno [3,2-b] thiophene-2,5-dicarboxylic acid

- 3-methyl-2,4-Thiophenedicarboxylic acid

- Naphthostyril-5,6-dicarboxylic acid

- 3-phenyl-2,4-quinolinedicarboxylic acid

3,4-Dimethyl-2,5-dicarboxythiophene

3,4-Diphenyl-2,5-thiophenedicarboxylic acid

2,5-diphenyl-3,4-furanedicarboxylic acid 7-Oxc-7H-benzimidazo [2,1-a] benz [de] isoquinoline-3,4-dicarboxylic acid

- 2,3-Dihydro-1,3-dioxo-1H-Benz [de] isoquinoline-6,7-dicarboxylic acid

3,4-bis (phenylmethoxy) -2,5-furandicarboxylic acid

4,4'-Bibenzoic acid-2,2'-sulfone

- 2,7-Diphenyl-m-anthrazoline-4,5-dicarboxylic acid

- 2,4-Pyrimidinedicarboxylic acid

- 2-Phenyl-4,5-thiazoledicarboxylic acid

- 6-phenyl-2,3-pyridinedicarboxylic acid

- 5,6-Dimethyl-2,3-pyrazinedicarboxylic acid

- 3,7-Dibenzothiophenedicarboxylic acid

9-oxo-9H-Xanthene-1,7-dicarboxylic acid

2- (1,1-dimethylethyl) -H-imidazole-4,5-dicarboxylic acid

- 6,7-Quinolinedicarboxylic acid

- 6-Methyl-2,3-pyridinedicarboxylic acid

- 4,5-Pyrimidinedicarboxylic acid

- 2-methyl-3,4-furanedicarboxylic acid

- 1, 2-Indolizinedicarboxylic acid

- 2,8-Dibenzothiophenedicarboxylic acid

- 3,6-Pyridazinedicarboxylic acid

- 1, 10-Phenanthroline-2,9-dicarboxylic acid

- 1, 4,5,6-tetrahydro-5,6-dioxo-2,3-pyrazinedicarboxylic acid

3,4-Dimethoxy-2,5-furandicarboxylic acid

- 2-Ethyl-4,5-imidazoledicarboxylic acid

- 2-Propyl-1H-imidazole-4,5-dicarboxylic acid

- 4-phenyl-2,5-pyridinedicarboxylic acid

- 4,5-Pyridazinedicarboxylic acid

- 1, 4,5,8-Tetrahydro-1,4,5,8-Diepoxynaphthalene-4a, 8a-dicarboxylic acid

- 5,5-dioxide-2,8-Dibenzothiophenedicarboxylic acid

- Pyrazolo [1,5-a] pyridine-2,3-dicarboxylic acid

2,3-Dihydro-1H-pyrrolizine-1,7-dicarboxylic acid

- 6-methyl-2,4,5-pyridinetricarboxylic acid

- Pyrrolo [2,1,5-cd] indolizine-5,6-dicarboxylic acid

3,4-Bis (2,2,3,3,4,4,4-heptafluorobutyl) -1H-pyrrole-2,5-dicarboxylic acid -The acid 6,7,9,10,17 , 18,20,21-octahydrodibenzo [b, k] [1,4,7,10,13,16] hexaoxacyclo-octadecin-2,14-dicarboxylic acid

6,7,9,10,17,18,20,21-octahydro-dibenzo [b, k] [1, 4, 7, 10, 13, 16] hexaoxacyclo octadecin-2, 13-dicarboxylic acid

- 2-methyl-3,4-Quinolinedicarboxylic acid

- 4,7-Quinolinedicarboxylic acid

- 3,5-lsoxazoledicarboxylic acid

2- (trifluoromethyl) 3,4-furanedicarboxylic acid

5- (trifluoromethyl) -2,4-furanedicarboxylic acid

- 6-methyl-2,4-quinolinedicarboxylic acid - 5-oxo-1,2-pyrrolidinedicarboxylic acid

- 5-Ethyl-2,3-pyridinedicarboxylic acid

- 1, 2-Dihydro-2-oxo-3,4-quinolinedicarboxylic acid

- 4,6-Phenoxathiindicarboxylic acid

- 10,10-dioxide 1,9-phenoxathiindicarboxylic acid

3,4-Dihydro-2H-1,4-thiazine-3,5-dicarboxylic acid

2,7-Di (tert-butyl) -9,9-dimethyl-4,5-xanthenedicarboxylic acid

- 6-methyl-2,3-quinoxalinedicarboxylic acid

- 3,7-Quinolinedicarboxylic acid

- 2,5-Quinolinedicarboxylic acid

- 2-Methyl-6-phenyl-3,4-pyridinedicarboxylic acid

3,4-dimethylthieno [2,3-b] thiophene-2,5-dicarboxylic acid

3,4-Dimethoxythiophene-2,5-dicarboxylic acid

- 5-methyl-3,4-lsoxazoledicarboxylic acid

2,6-bis (aminocarbonyl) -3,5-pyridinedicarboxylic acid

- 3,5-bis (aminocarbonyl) -2,6-pyrazinedicarboxylic acid

- 2,3-Pyridinedicarboxylic acid

6- (1,1-Dimethylethyl) -2-ethyl-3,4-pyridinedicarboxylic acid

- 3-methyl-5-phenyl-2,4-thiophenedicarboxylic acid

- 1, 2-Dihydro-2-oxo-6-phenyl-3,5-pyridinedicarboxylic acid

- 8-methyl-2,4-quinolinedicarboxylic acid

- 4-ethyl-2,6-dimethyl-3,5-pyridinedicarboxylic acid

- 5- (phenoxymethyl) -2,4-Furanedicarboxylic acid

5- (acetylamino) -3-methyl-2,4-thiophenedicarboxylic acid

2- (4-heptylphenyl) -4,8-quinolinedicarboxylic acid

- 2,8-bis (4-heptylphenyl) -pyrido [3,2-g] quinoline-4,6-dicarboxylic acid

1, 2,3,4,6,7,8,9-octahydro-2,8-dioxo-pyrido [3,2] quinoline-3,7-dicarboxylic acid

- 2,8-dimethyl-pyrido [3,2-g] quinoline-3,7-dicarboxylic acid

- 5,6-Quinolinedicarboxylic acid

- 6-ethyl-2-methyl-cinchomeronic acid

- 2-methyl-6-propyl-cinchomeronic acid

- 6-isopropyl-2-methyl-cinchomeronic acid

- 6-tert-butyl-2-methyl-cinchomeronic acid

- 1,4-Dimethyl-7-Oxabicyclo [2.2.1] heptane-2,3-dicarboxylic acid

- 1,2-Dihydro-2-oxo-3,8-quinoline dicarboxylic acid

- 1, 2-Dihydro-2-oxo-3,6-quinoline dicarboxylic acid

- 1, 2-Dihydro-2-oxo-3,7-quinoline dicarboxylic acid

- 3,7-dimethyl-2,8-diphenyl-pyrido [3,2-g] quinoline-4,6-dicarboxylic acid

- 8-methyl-2,3-Quinolinedicarboxylic acid

3 - [[(1,1-Dimethylethyl) amino] sulfonyl] -2,5-thiophene dicarboxylic acid

4- (Acetylamino) -2,3-thiophenedicarboxylic acid

- 2,5-Pyridinedicarboxylic acid - 2,6-Pyridinedicarboxylic acid

- 2,4-Thiophenedicarboxylic acid

- 2,5-Thiophenedicarboxylic acid

- 1,4-pyran-2,6-dicarboxylic acid

- Ribarique acid

- Glucaric acid

- Xylaric acid

- Arabinaric acid

- Mannaric acid

- Idaric acid

- Altraric acid

- L-Glucaric acid

- L-Arabinaric acid

- Allaric acid

- Galactaric acid

- meso-Tartaric acid

- D-Glucaric acid

- L-ldaric acid

- Hexaric acid

- 2,3-Dihydroxybutanedioic acid

- D-Tartaric Acid

- DL-Tartaric Acid

- D-Glucaric acid

- tartaric acid

- Tetrahydroxysuccinic acid

2-carboxy-2,3-dideoxy D-manno-2-octulopyranosonic acid

- Methyl 3-deoxy-D-arabino-2-heptulopyranosaric acid

- D-lyxo-2-heptulopyranosaric acid

2,6-Anhydro-L-glycero-L-galacto-heptaric acid

1,4-dihydro-4-oxo-2,6-pyridinedicarboxylic acid

2,6-Piperidinedicarboxylic acid

1 H-Pyrrole-3,4-dicarboxylic acid

- 4-amino-2,6-dicarboxylic acid

1-methyl-1H-Pyrazole-3,4-dicarboxylic acid

2,3-Piperidinedicarboxylic acid

1-methyl-1H-1-imidazole-4,5-dicarboxylic acid

2,4-Thiazolidinedicarboxylic acid

1- (phenylmethyl) -1H-1-imidazole-4,5-dicarboxylic acid

5-amino-6-oxo-2,3-piperidinedicarboxylic acid

5-amino-6-oxo-2,4-piperidinedicarboxylic acid

5-amino-6-oxo-2,3-piperidinedicarboxylic acid

5-amino-6-oxc-, [2S- (2α, 4β, 5α)] -2,4-piperidinedicarboxylic acid

- (2S, 4R) -2,4-Pyrrolidinedicarboxylic acid - racide- (2S-cis) -2,4-Pyrrolidinedicarboxylic

2-amino-1H-1-imidazole-4,5-dicarboxylic acid

- 2,5-Pyrrolidinedicarboxylic acid

4-amino-3,5-lsothiazoledicarboxylic acid

1-methyl-1H-Pyrazole-3,5-dicarboxylic acid

7- (diethylamino) -2-oxo-2H-1-benzopyran-3,4-dicarboxylic acid

3,4-diethyl-1H-pyrrole-2,5-dicarboxylic acid

1-phenyl-1H-pyrrole-3,4-dicarboxylic acid

cis-2,3-Piperazinedicarboxylic acid

2,3-Piperazinedicarboxylic acid

- 2,5-Piperazinedicarboxylic acid

2,6-Piperazinedicarboxylic acid

2-amino-3,5-pyridinedicarboxylic acid

2-methyl-pyrrole-3,4-dicarboxylic acid

4- (methylamino) -2,6-pyridinedicarboxylic acid

2-amino-6-methyl-3,4-pyridinedicarboxylic acid

5-amino-2-methyl-3,4-pyridinedicarboxylic acid

2-amino-6-methyl-3,5-pyridinedicarboxylic acid

2,5-dimethyl-pyrrole-3,4-dicarboxylic acid

2,5-dimethyl-pyrrole-3,4-dicarboxylic acid

2-amino-6-hydroxy-3,5-pyridinedicarboxylic acid

2,4-Pyrrolidinedicarboxylic acid

1H -indole-2,4-dicarboxylic acid

1 H-indole-2,6-dicarboxylic acid

1H-lndole-2,5-dicarboxylic acid

- 5-phenyl-2,4-pyrrolidinedicarboxylic acid

- 5-methyl-2,4-pyrrolidinedicarboxylic acid

trans-2,4-azetidinedicarboxylic acid

cis-2,4-azetidinedicarboxylic acid

- 3,5-Piperidinedicarboxylic acid

2,3-Pyrrolidinedicarboxylic acid

- 2,3-Azetidinedicarboxylic acid

3,4-Pyrrolidinedicarboxylic acid

2,3-Dihydro-6H-1,4-dioxino [2,3-c] pyrrole-5,7-dicarboxylic acid

1-H-imidazole-2,4-dicarboxylic acid

1-butyl-1H-pyrrole-2,3-dicarboxylic acid

- 3-amino-1-oxide-2,4-pyridinedicarboxylic acid

2,3-dihydro-5-phenyl-1H-pyrrolizine-6,7-dicarboxylic acid

- 3a, 4,5,9b-tetrahydro-3H-cyclopenta [c] quinoline-4,6-dicarboxylic acid

3a, 4,5,9b-tetrahydro-3H-cyclopenta [c] quinoline-4,8-dicarboxylic acid

2,3-Dihydro-1H-1-imidazole-4,5-dicarboxylic acid

- 5-amino-6-methyl-Lutidinic acid

1H-lndole-3,7-dicarboxylic acid 3,3-dimethyl-2,6-piperidinedicarboxylic acid

- 1-butyl-2,5-pyrrolidinedicarboxylic acid

1H-lndole-4,6-dicarboxylic acid

1- (phenylmethyl) -3,4-pyrrolidinedicarboxylic acid

3- (carboxymethyl) -1H-indole-2,6-dicarboxylic acid

3,4-bis (2,2,2-trifluoroethyl) -1H-pyrrole-2,5-dicarboxylic acid

9-hexyl-9H-carbazole-3,6-dicarboxylic acid

3-methyl-5- (1-piperazinylsulfonyl) -2,4-thiophenedicarboxylic acid

2,3,4,9-tetrahydro-1H-carbazole-5,7-dicarboxylic acid

2,3-dimethyl-1H-indole-4,6-dicarboxylic acid

7-amino-1,4-dihydro-4-oxo-3,6-quinoline dicarboxylic acid

5-amino-3-methyl-2,4-thiophenedicarboxylic acid

- (m-tolylimino) di-Acetic acid

- (o-tolylimino) di-Acetic acid

- D-Cystathionine

- Phenethyliminodiacetic acid

2-Benzyl-2,2'-iminodiacetic acid

L-α-glutamyl-L-alanyl-L-Alanine

N, N'-Dibenzylethylenediaminediacetic acid

N-L-gamma-glutamyl-D-Alanine

- glycyl-L-glutamyl glycine

N- (carboxymethyl) -N- (tetrahydro-1,1-dioxido-3-thienyl) -Glycine

N- (2-carboxyethyl) -N-phenyl-beta-Alanine

N- (carboxymethyl) -N-octyl-glycine

N- (tert-Butoxycarbonyl) iminodiacetic acid

N- (carboxymethyl) -L-Alanine

N- (6-aminohexyl) -N- (carboxymethyl) -Glycine

N- (carboxymethyl) -N-tetradecyl-glycine

N- (1-carboxyethyl) -D-Alanine

N- (carboxymethyl) -D-Alanine

decyliminodiacetic acid

3,3 '- (dimethylhydrazono) bis-propanoic acid

N- (carboxymethyl) -N- [2- (2,6-dioxo-4-morpholinyl) ethyl] -glycine

- N-alpha-aspartyl-glycine

- N-beta-aspartyl-glycine

- N-L-alpha-aspartyl-beta-Alanine

3,4-Xylylamino-N, N-diacetic acid

N- (1-carboxyethyl) -Alanine

N- (carboxymethyl) -Alanine

N, N'-methylenebis-glycine

N- (aminomethyl) -N- (carboxymethyl) -glycine

N- (aminomethyl) -N- (carboxymethyl) -glycine

- 2,2 '- (methylhydrazono) bis-acetic acid N- (2-carboxyethyl) -N- (4-methylphenyl) -beta-alanine

N- (2-carboxyethyl) -N- (3-methylphenyl) -beta-alanine

3 - [(carboxymethyl) amino] -Alanine

- D-alpha-aspartyl-D-Alanine

N- (2-carboxyethyl) -N- (1-oxohexadecyl) -beta-alanine

N- (2-carboxyethyl) -N- (1-oxodecyl) -beta-alanine

N- (2-carboxyethyl) -N- (1-oxotetradecyl) -beta-alanine

amino acid [(carboxymethyl) thio] - acetic acid

N, N'-1,6-hexanediylbis-beta-Alanine

N- (carboxymethyl) -N-phenyl-beta-Alanine

N- (i-carboxyethyl) -L-Alanine

- L-glutamic acid

- L-aspartic acid.

3,3 ', 3 "- [1,2,3-propanetriyltris (oxy)] trispropanoic acid

- Pyrazinetricarboxylic acid

4- (3-carboxyphenyl) -2,5-pyridinedicarboxylic acid

- 3- (carboxymethyl) -2,4-quinolinedicarboxylic acid

3- (carboxymethyl) -1H-indole-2,5-dicarboxylic acid

- 3-C-carboxy-2-deoxy-D-threo-pentaric acid

- Hydroxycitric acid

D-glucopyranuronosyl-D-arabino-2-hexulofuranosidaric acid

- 2,3,5,6-Pyridinetetracarboxylic acid

N, N'-1, 2-ethanediylbis [N- (carboxymethyl) -β-alanine

L-α-aspartyl-L-Aspartic acid

4- [bis (carboxymethyl) amino] benzoic acid

7- [bis (carboxymethyl) amino] -Heptanoic acid

- N- (2-carboxyethyl) -Aspartic acid

3- [bis (2-carboxyethyl) amino] benzoic acid

4- [bis (2-carboxyethyl) amino] benzoic acid; as well as the cyclic anhydrides of these acids, and in particular the 1, 4-monoanhydride of 1, 4,5,8-naphthalenetetracarboxylic acid; iodic anhydride; phthalic anhydride, trimellitic anhydride, maleic anhydride and succinic anhydride.

8. Composition according to one of the preceding claims, wherein the lactone is chosen from, alone or as a mixture,

- tetrahydro-2,2-dimethyl-5-oxo-3-furancarboxylic acid

- 4,7,7-trimethyl-3-oxo-2-oxabicyclo [2.2.1] heptane-1-carboxylic acid

- 4,6-dimethyl-2-oxo-2H-pyran-5-carboxylic acid

- 2-Oxo-2H-Pyran-5-carboxylic acid-2-Pentenedioic acid

- 2-oxo-2H-1-Benzopyran-3-carboxylic acid

2-oxo-2H-pyran-6-carboxylic acid

- 1,3-Dihydro-3-oxo-1-lsobenzofurancarboxylic acid - 4-methyl-2-oxo-2H-1-Benzopyran-3-carboxylic acid

- 1-Oxo-1H-2-Benzopyran-3-carboxylic acid

- 8-methoxy-2-oxo-2H-1-Benzopyran-3-carboxylic acid

- 2-Oxo-1-Oxaspiro [4.5] decane-4-carboxylic acid

2-oxo-2H-pyran-3-carboxylic acid

- 4-methyl-2-oxo-2H-pyran-6-carboxylic acid

- 3-oxo-3H-Naphtho [2,1-b] pyran-2-carboxylic acid

- tetrahydro-5-oxo-2,3-furandicarboxylic acid

- 1,3-Dihydro-3-oxo-4-lsobenzofurancarboxylic acid

- 1,3-Dihydro-1-oxo-5-lsobenzofurancarboxylic acid

- Hexahydro-2-oxo-3,5-methano-2H-cyclopenta [b] furan-7-carboxylic acid

- 6-methyl-2,4-dioxo-2H-pyran-5-carboxylic acid

- 1-oxo-3-lsochromancarboxylic acid

- 2-oxo-2H-1-Benzopyran-6-carboxylic acid

- 6-methyl-2-oxo-2H-1-Benzopyran-3-carboxylic acid

- 2,5-Dihydro-4,5,5-trimethyl-2-oxo-3-furancarboxylic acid

- tetrahydroc-5-oxo-2-phenyl-3-furancarboxylic acid

- tetrahydro-5-oxo-4-propyl-2-furoic acid

- 2-Butyl-2,3-dideoxy-pentaric acid

- 2-oxo-2H-1-Benzopyran-7-carboxylic acid

- 2-oxo-1-oxaspiro [4.4] nonane-4-carboxylic acid

- 4-ethyltetrahydro-5-oxo-2-furoic acid

5-ethyltetrahydro-2,3-dimethyl-6-oxo-2H-pyran-2-carboxylic acid

7-methoxy-2-oxo-2H-1-benzopyran-3-carboxylic acid

- 2-oxo-2H-1-Benzopyran-4-carboxylic acid

- 2-oxo-6-pentyl-2H-pyran-3-carboxylic acid

- 7-Oxo-4-Oxepanecarboxylic acid

3- (carboxymethyl) -2,3-dideoxy-pentaric acid

2,3-Dihydro-2-oxo-7-benzofurancarboxylic acid

1, 3,4,5-tetrahydro-1-oxo-2-benzoxepin-7-carboxylic acid

3,4-Dihydro-3-oxo-1H-2-benzopyran-6-carboxylic acid

2,3,4,5-tetrahydro-2-oxo-1-benzoxepin-7-carboxylic acid

3,4-Dihydro-1-oxo-1H-2-benzopyran-8-carboxylic acid

1, 3,4,5-tetrahydro-3-oxo-2-benzoxepin-9-carboxylic acid

1, 3,4,5-tetrahydro-3-oxo-2-benzoxepin-7-carboxylic acid

3,4-Dihydro-2-oxo-2H-1-benzopyran-8-carboxylic acid

1, 3,4,5-tetrahydro-1-oxo-2-benzoxepin-9-carboxylic acid

3,4-Dihydro-1-oxo-1H-2-benzopyran-6-carboxylic acid

3,4-Dihydro-3-oxo-1H-2-benzopyran-8-carboxylic acid

2,3,4,5-tetrahydro-2-oxo-1-benzoxepin-9-carboxylic acid

- The lactone of isocitric acid

5-oxo-2-tetrahydrofuranecarboxylic acid.

9. Composition according to one of the preceding claims, wherein the polycarboxylic acid and / or its cyclic anhydride and / or the lactone represents 5 to 30% by weight, and more preferably 10 to 25% by weight, of the total weight of the polycondensate. .

10. Composition according to one of the preceding claims, wherein the silicone is of formula:

in which :

- W and W are, independently of one another, OH or COOH;

p and q are, independently of one another, equal to 0 or 1,

- R and R 'are, independently of one another, a divalent carbon radical, in particular hydrocarbon, saturated or unsaturated, or even aromatic, linear, branched and / or cyclic; comprising 1 to 12 carbon atoms, and optionally further comprising 1 or more heteroatoms selected from O, S and N;

- R1 to R6 are, independently of one another, a linear carbon radical, branched and / or cyclic, saturated or unsaturated or aromatic; comprising 1 to 20 carbon atoms;

m and n are, independently of each other, integers between 1 and 140, and are such that the weight average molecular weight (Mw) of the silicone is between 300 and 20,000.

11. Composition according to one of the preceding claims, wherein the silicone represents 1 to 10% by weight, or even 2 to 8% by weight, of the total weight of the polycondensate.

12. Composition according to one of the preceding claims, wherein the polycondensate has at least one of the following characteristics:

an acid number, expressed as mg of potassium hydroxide per g of polycondensate, greater than or equal to 1; in particular between 2 and 30, and even better between 2.5 and 15; and or

a hydroxyl number expressed in mg of potassium hydroxide per g of polycondensate, greater than or equal to 40; in particular between 40 and 120, and even better between 45 and 80; and or

- A weight average molecular weight (Mw) of between 1500 and 300 000, or even between 2000 and 200 000, and in particular between 3000 and 150 000.

13. Composition according to one of the preceding claims, wherein the polycondensate has a viscosity such that:

at 25 ° C., when this viscosity can be measured, it is strictly greater than at 5000 mPa.s, in particular between 5100 and 10000 mPa.s, or between 6000 and 9500 m Pa. s; and or

the viscosity, measured at 110 ^° C., is between 100 and 4000 mPa.s, in particular between 130 and 3500 mPa.s, or even between 150 and 3000 mPa.s and better still between 200 and 2500 m Pa.s; and or

the viscosity, measured at 80 ^° C., is between 150 and 5000 mPa.s, in particular between 200 and 4000 mPa.s, even between 250 and 3000 mPa.s and even better between 300 and 2000 mPa.s.

14. Composition according to one of the preceding claims, in which the polycondensate has a solubility in at least one solvent chosen from isododecane, Parleam, isononyl isononanoate, octyldodecanol and benzoate. C12-C15 alkyl, at least 50% by weight, at 70 ° C.

15. Composition according to one of the preceding claims, in which the polycondensate is present in an amount of between 0.1 and 70% by weight, preferably between 1 and 50% by weight, in particular between 10 and 45% by weight. weight, or even between 20 and 40% by weight, and better still between 25 and 35% by weight, relative to the weight of the final cosmetic or pharmaceutical composition.

16. Composition according to one of the preceding claims, in which the cosmetically or pharmaceutically acceptable medium comprises at least one liquid fatty phase, which may comprise at least one compound chosen from oils and / or solvents of mineral, animal and vegetable origin. or synthetic, carbonaceous, hydrocarbon, fluorinated and / or silicone, volatile or non-volatile, alone or in mixture; and / or comprises at least one compound chosen from thickening agents, waxes, dyestuffs, antioxidants, perfumes, essential oils, preservatives, cosmetic active agents, moisturizers, vitamins, ceramides and sunscreens. surfactants, spreading agents, wetting agents, dispersing agents, defoamers, neutralizers, stabilizers, polymers and in particular fat-soluble film-forming polymers, and mixtures thereof.

17. Composition according to one of the preceding claims, being in the form of a care product and / or makeup of the skin of the body or face, lips, eyelashes, eyebrows, hair, leather hair or nails; a suntan or self-tanning product; a hair product including coloring, conditioning and / or hair care.

18. Process for the cosmetic treatment of keratinous substances, especially the skin of the body or of the face, lips, nails, hair and / or eyelashes, comprising the application on said materials of a cosmetic composition as defined in one of claims 1 to 17.

19. A cosmetic process for the care or makeup of the lips, comprising the application of a cosmetic composition as defined in one of claims 1 to 17.

20. Polycondensate obtainable by reaction of only the following monomers:

from 10 to 30% by weight, relative to the total weight of the polycondensate, of one or more polyols comprising 3 to 6 hydroxyl groups;

from 30 to 80% by weight, relative to the total weight of the polycondensate, of one or more linear or branched and / or cyclic saturated or unsaturated non-aromatic monocarboxylic acids comprising 6 to 32 carbon atoms;

from 1 to 40% by weight, relative to the total weight of the polycondensate, of one or more polycarboxylic acids and / or cyclic anhydrides of such a polycarboxylic acid and / or lactones comprising at least one COOH group; and

from 0.1 to 15% by weight, relative to the total weight of the polycondensate, of one or more hydroxyl and / or carboxylic functional silicones.