FR2917618A1 - Cosmetic product, useful in paste or stick for make-up of skin, nails or hair, comprises a first composition comprising silicone compound, and second composition comprising polyester and/or cyclic anhydride of polycarboxylic acid - Google Patents

Abstract

Cosmetic product comprises a first composition and a second composition, conditioned separately, where the first composition comprises silicone compound, and the second composition is distinct from the first and comprises polyester obtained by reacting: polyol comprising 3-6 hydroxyl groups; non aromatic monocarboxylic acid; aromatic monocarboxylic acid, and polycarboxylic aromatic comprising 2 carboxylic acid groups; and/or cyclic anhydride of polycarboxylic acid.

Description

The present invention relates to a cosmetic product comprising at least

  at least two compositions that can be applied successively to the skin of the face as well as the body, on the lower and upper eyelids, on the lips and on the integuments such as nails, eyebrows, eyelashes or hair. The present invention also relates to a process for making up the face and the body using these two compositions.

  Each composition may be a foundation, a blush, an anti-ring product, a blush, a loose or compacted powder, a lipstick, a lip balm, a lip gloss, a pencil. lips or eyes, a mascara, an eyeliner, a nail polish or a product of body make-up or skin coloring.

  An object of the present invention is to provide a composition that is both good and bright. An object of the present invention is therefore a cosmetic product comprising first and second compositions, packaged separately, the first composition containing at least one particular polyester, and the second composition distinct from the first comprising at least one silicone compound. The product of the invention is in particular a makeup product for the skin, nails or hair.

  By makeup product is meant a product containing a coloring agent for depositing a color on a keratinous material (skin or integuments) of a human being by the application to the keratin material of products such as reds. lips, make-up, eyeliners, foundations or self-tanners, semi permanent make-up products (tattoo).

  The product according to the invention comprises at least two cosmetically acceptable compositions packaged separately or together in one and the same packaging article or in at least two separate packaging articles. Preferably, these compositions are packaged separately and advantageously in separate packaging articles. The object of the present invention is therefore in particular a cosmetic makeup product in the form of a lipstick, a foundation, a mascara, a blush or an eyelid , a lipstick, a nail polish, a product having particular care properties, a mascara, an eyeliner, a concealer product, or a 40 body make-up product (tattoo type) or hair.

  The invention also relates to a makeup kit containing a cosmetic makeup product as defined above, wherein the different compositions are packaged separately and are advantageously accompanied by appropriate application means 45. These means may be brushes, brushes, pens, pencils, felts, feathers, sponges, tubes and / or foam tips.

  The first composition of the product according to the invention may constitute a base layer applied to the keratin material and the second composition a top layer. However, it is possible to apply under the first layer an underlayer having the constitution or not of the second layer. It is also possible to deposit an overlayer on the second layer having a constitution identical or not to that of the first layer. Preferably, the makeup obtained is a bilayer makeup. The second composition may also constitute a base layer applied to the keratinous material and the first composition a topcoat.

  In particular, the base layer is a lipstick, a foundation, a mascara, a lip gloss, an eyeliner, a nail polish, a nail care product, a body makeup product, and the top layer (or top coat) a care product or protection.

  The invention also relates to a process for making up the skin and / or the lips and / or the integuments comprising applying to the skin and / or the lips and / or the integuments a cosmetic product as defined above.

  The subject of the invention is also a cosmetic process for the care or make-up of the skin and / or the lips and / or integuments of a human being, consisting in applying a first layer to the skin, the lips and / or the integuments. of a first composition comprising a particular polyester polymer, then to apply, over all or part of the first layer, a second layer of a second composition comprising a cosmetically acceptable medium.

  This method may consist in applying to the skin, the lips and / or the integuments a first layer of a first composition comprising at least one silicone compound, allowing the said first layer to dry, then to apply to all or part of the first layer, a second layer of a second composition comprising said polyester. This method may also consist in applying to the skin, the lips and / or the integuments of being human a first layer of a composition comprising a silicone compound, allowing said first layer to dry, then applying, on all or part of the first layer, a second layer of a composition comprising a polyester polycondensate. The product according to the invention can be applied to the skin of the face as well as the scalp and the body, the lips, the interior of the lower eyelids, and integuments such as the nails, the eyelashes, the hair, eyebrows, even hair. The second composition may form patterns and may be applied with a pen, pencil or other instrument (sponge, finger, brush, brush, feather). This makeup can also be applied to make-up accessories such as false nails, false eyelashes, wigs or patches or adherent patches on the skin or lips (fly type).

  The invention also relates to a make-up support comprising a first layer of a first composition comprising a silicone compound, and a second layer of a second composition comprising a particular polyester, said first layer being applied to the support first or above all or part of the second layer.

  This support may be in particular a hairpiece such as a wig, false nails, 45 false eyelashes, or patches adherent on the skin or lips (fly type).

  The invention also relates to the cosmetic use of the cosmetic product defined above for improving the comfort properties, in particular of non-tacky and / or non-drying, and / or of gloss and / or transfer and / or migration and / or holding makeup on the skin and / or the lips and / or integuments.

  The invention finally relates to the use of a cosmetic product comprising a first and a second composition, the first composition comprising at least one silicone compound as described below, and the second composition comprising at least one polyester compound such as described below, to give the skin and / or the lips and / or integuments a glossy cosmetic rendering and good performance.

First composition

  The first composition according to the invention comprises at least one silicone compound.

  Fluid Silicone The first composition may contain at least one fluid silicone compound such as in particular a silicone gum or a high viscosity silicone oil. The preferably nonvolatile fluid silicone compound may be chosen from polydimethylsiloxanes; alkyldimethicones; polyphenylmethylsiloxanes such as phenyldimethicones, phenyltrimethicones, and vinylmethylmethicones; as well as silicones modified with aliphatic and / or aromatic groups, optionally fluorinated, or with functional groups such as hydroxyl, thiol and / or amine groups.

  The fluid silicone compound may in particular be chosen from the silicones of formula (I): ## STR2 ## in which: R 1, R 2, R 5 and R 6 are, together or separately, an alkyl radical having 1 to 6 carbon atoms, R3 and R4 are, together or separately, an alkyl radical having 1 to 6 carbon atoms, a vinyl radical or an aryl radical, X is an alkyl radical having 1 to 6 carbon atoms, a hydroxyl radical or a vinyl radical, n and p being integers chosen so as to have a fluid compound.

  For example, a nonvolatile silicone of formula (I) is chosen from a polydimethylsiloxane with a viscosity at 25 ° C. of between 10 and 10,000,000 cSt, preferably between 1,000 and 2,500,000 cSt, preferably between 5,000 and 1,000,000 cSt. more preferably between 10,000 and 60,000 cSt.

  The viscosity of this silicone can be measured according to ASTM D-445.

  As the fluid silicone that may be used according to the invention, mention may be made of those for which: the substituents R 1, R 6 and X represent a methyl group, such as that sold under the name SE30 by the company General Electric, and that sold under the name AK 500000 by the company Waker,. the substituents R 1, R 6 and X represent a methyl group, p and n are such that the molecular weight is 250 000 g / mol, such as that sold under the name Silbione 70047 V by Rhodia, 5. the substituents R 1, R 2, R 5, R 6 and X represent a methyl group, the substituents R 3 and R 4 represent an aryl group, n and p are such that the molecular weight of the polymer is 600 000 g / mol, such as that sold under denomination 761 by the company Rhône-Poulenc. The fluid silicone may be chosen from the dimethicones described in US Pat. No. 4,152,416. They are, for example, sold under the references SE30, SE33, SE 54 and SE 76.

  The dimethicones according to the invention include polydimethylsiloxanes, (polydimethylsiloxane) (methylvinylsiloxane) copolymers such as SE63 marketed by GE BAYER Silicones, poly (dimethylsiloxane) (diphenyl) (methylvinylsiloxane) copolymers, and mixtures thereof.

  The weight-average molecular weight of the fluid silicone may be in the range of 1000 to 1500,000 g / mol, especially in the range of 200,000 to 1,000,000 g / mol.

  Polymer or copolymer polyamide. The first composition may contain a polyamide polymer or copolymer which may be chosen from homopolymers polyamides, polyamides branched by fatty chains, polyamides-organosiloxanes, polyamide-polyester copolymers, polyamide-polyacrylic copolymers, and mixtures thereof. The polyamide polymer may be present in the first composition in a content ranging from 0.1% to 60% by weight, relative to the total weight of the first composition, preferably ranging from 0.1% to 50% by weight. preferably ranging from 0.5 to 40% by weight, preferably ranging from 1% to 30% by weight, and more preferably ranging from 1% to 25% by weight.

  As the polyamide polymer that can be used in the invention, mention may be made of the polymers described in the application EP 1 343 458, the content of which is incorporated herein by reference, for example the polyamide resins resulting from the condensation of a di-acid. aliphatic carboxylic acid and a diamine (including compounds having more than 2 carbonyl groups and 2 amine groups), the carbonyl and amine groups of adjacent unit units being fused by an amide bond. These polyamide resins are especially those marketed under the Versamid brand by General Mills, Inc. and Henkel Corp. (Versamid 930, 744 or 1655) or by the company Olin Mathieson Chemical Corp., under the trademark Onamid including Onamid S or C. These resins have a weight average molecular weight ranging from 6000 to 9000. For more information on these polyamides, reference may be made to US-A-3645705 and US-A-3148125. More specifically, Versamid 930 or 744 are used.

  It is also possible to use the polyamides sold by the company Arizona Chemical under the references Uni-Rez (2658, 2931, 2970, 2621, 2613, 2624, 2665, 1554, 2623, 2662) and the product sold under the reference Macromelt 6212 by Henkel company. For more information on these polyamides, reference may be made to US-A-5500209.

  It is also possible to use polyamide resins from vegetables such as those described in US-A-5783657 and US-A-5998570.

  As polyamide polymers that can be used in the invention, mention may be made of polyamides branched by pendant fatty chains and / or terminal fatty chains having from 6 to 120 carbon atoms and better still from 8 to 120 and in particular from 12 to 68 carbon atoms. carbon, each terminal fatty chain being linked to the polyamide backbone by at least one linking group, in particular an ester group. Preferably, these polymers comprise a fatty chain at each end of the polymer backbone and in particular the polyamide backbone.

  Other linking groups that may be mentioned include ether, amine, urea, urethane, thioester, thiurea and thiourethane groups.

  These polymers are more especially those described in the document US-A-5783657 of the company Union Camp. By way of example, mention may be made of the commercial products sold by Arizona Chemical under the names Uniclear 80 and Uniclear 100. They are sold respectively in the form of an 80% gel (of active ingredient) in a mineral oil and 100 % (in active matter). They have a softening point of 88 to 94 ° C. These commercial products are a mixture of copolymers of a C36 di-acid condensed on ethylene diamine with a weight average molecular weight of about 6000. The terminal ester groups result from esterification of the remaining acid terminations with cetyl alcohol, stearyl alcohol or mixtures thereof (also known as cetylstearyl alcohol).

  Polyamide polymers that can be used in the invention also include polyamides comprising at least one polyorganosiloxane group, consisting of 1 to 1000 organosiloxane units in the main chain or in the form of a graft. The polymers are for example those described in US-A-5,874,069, US-A-5,919,444, US-A-6,051,216 US-A-5,981,680 and WO 04/054524, the contents of which are incorporated herein by reference.

  The silicone polyamide may be a polymer comprising at least one unit of formula (IV) or (V): ## STR1 ## where II R7 OO n (V)

  R4, R5, R6 and R7, which may be identical or different, represent a group chosen from: - linear or branched or cyclic hydrocarbon groups, in C 1 to C 40, saturated or unsaturated, which may contain in their chain one or more atoms of oxygen, sulfur and / or nitrogen, and may be substituted in part or totally by fluorine atoms, - C6-C4 aryl groups, optionally substituted by one or more C1-C4 alkyl groups; the polyorganosiloxane chains, which may or may not contain one or more oxygen, sulfur and / or nitrogen atoms, X, which may be identical or different, represent a linear or branched C 1 -C 30 alkylene di-yl group which may contain in its chain one or more oxygen and / or nitrogen atoms, Y is a divalent linear or branched alkylene, arylene, cycloalkylene, alkylarylene or arylalkylene, saturated or unsaturated, C 5 to C 50 group, which may comprise one or more oxygen, sulfur and / or and / or substituting one of the following atoms or groups of atoms: fluorine, hydroxy, C3-C8 cycloalkyl, C₁-C C alkyl, C5-C ar aryl, phenyl optionally substituted with 1 to 3 C 1 -C 3 alkyl, C 1 -C 3 hydroxyalkyl and C 1 -C 6 amino alkyl, or n is an integer from 2 to 500, preferably from 2 to 200, and m is a whole number ranging from 1 to 1000, preferably from 1 to 700 and more preferably from 6 to 200.

Oil :

  The first composition according to the invention may comprise at least one oil.

  The oil may be chosen from hydrocarbon oils, silicone oils and fluorinated oils. The oil may be chosen from volatile oils, non-volatile oils, and mixtures thereof.

  The term "hydrocarbon-based oil" means an oil formed essentially or even consisting of carbon and hydrogen atoms, and possibly oxygen, nitrogen, and not containing a silicon or fluorine atom; it may contain ester, ether, amine or amide groups.

  The oil may be chosen from volatile hydrocarbon oils. By silicone oil is meant an oil containing at least one silicon atom, and in particular containing Si-O groups. By fluorinated oil is meant an oil containing at least one fluorine atom.

  The first composition according to the invention may comprise at least one volatile oil.

  By "volatile oil" is meant an oil (or non-aqueous medium) capable of evaporating on contact with the skin in less than one hour, at room temperature and atmospheric pressure. The volatile oil is a volatile cosmetic oil which is liquid at ambient temperature, in particular having a non-zero vapor pressure, at ambient temperature and atmospheric pressure, in particular having a vapor pressure ranging from 0.13 Pa to 40 000 Pa ( 10-3 at 300 mm Hg), and preferably ranging from 1.3 Pa to 13 000 Pa (0.01 to 100 mm Hg), and preferably ranging from 1.3 Pa to 1300 Pa (0.01 to 100 mm Hg), and preferably ranging from 1.3 Pa to 1300 Pa (0.01 to 100 mm Hg), and preferably ranging from 1.3 Pa to 1300 Pa (0.01 to 100 mm Hg), 10 mm Hg).

  In addition, the volatile oil generally has a boiling point, measured at atmospheric pressure, ranging from 150 ° C. to 260 ° C., and preferably ranging from 170 ° C. to 250 ° C.

  The first composition according to the invention may comprise a hydrocarbon-based volatile oil chosen in particular from hydrocarbon-based oils having a flash point ranging from 40 ° C. to 102 ° C., preferably from 40 ° C. to 55 ° C., and preferentially ranging from 40 ° C. to 50 ° C. .

  Hydrocarbon volatile oils that may be mentioned include volatile hydrocarbon oils having 8 to 16 carbon atoms and mixtures thereof, and especially C8-C16 branched alkanes, for example iso-alkanes (also known as isoparaffins) with C8-C16, and isododecane, isodecane, isohexadecane and for example the oils sold under the trade names Isopars or permetyls, branched C8-C16 esters such as isohexyl neopentanoate, and mixtures thereof. Preferably, the volatile hydrocarbon oil is chosen from volatile hydrocarbon oils having from 8 to 16 carbon atoms and mixtures thereof, in particular from isododecane, isodecane and isohexadecane, and is especially isododecane.

  As the volatile silicone oil, mention may be made of linear or cyclic silicones having from 2 to 7 silicon atoms, these silicones optionally comprising alkyl or alkoxy groups having from 1 to 10 carbon atoms. As volatile silicone oil that may be used in the invention, there may be mentioned octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, octamethyltrisiloxane and decamethyltetrasiloxane, and mixtures thereof.

  The volatile oil may be present in the first composition according to the invention in a content ranging from 0.1% to 90% by weight, relative to the total weight of the first composition, preferably ranging from 1% to 70% by weight. weight, and preferably ranging from 5% to 50% by weight.

  The first composition according to the invention may comprise at least one non-volatile hydrocarbon oil.

  As the non-volatile hydrocarbon oil, paraffin oil (or petroleum jelly), squalane, hydrogenated polyisobutylene (Parleam oil), perhydrosqualene, mink, turtle, soybean oil, coconut oil and the like can be used. sweet almond, calophyllum, palm, grape seed, sesame, maize, arara, rapeseed, sunflower, cotton, apricot, castor oil, avocado, jojoba, olive or cereal sprouts; esters of lanolic acid, oleic acid, lauric acid, stearic acid; fatty esters, especially C12-C36, such as isopropyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, diisopropyl adipate, isononyl isononanoate, palmitate 2-ethyl-hexyl, 2-hexyl-decyl laurate, 2-octyl-decyl palmitate, myristate or 2-octyl-dodecyl lactate, di (2-ethyl hexyl) succinate, malate diisostearyl, glycerol triisostearate or diglycerine; behenic acid, oleic acid, linoleic acid, linolenic acid or isostearic acid; higher fatty alcohols, especially C16-C22, such as cetanol, oleic alcohol, linoleic or linolenic alcohol, isostearyl alcohol or octyl dodecanol; and their mixtures.

  The non-volatile oil may be present in a content ranging from 0.1% to 70% by weight, relative to the total weight of the non-volatile liquid fatty phase, preferably ranging from 0.5% to 60% by weight. and preferably ranging from 1% to 50% by weight. Second composition The second composition contains at least one polyester also called polycondensate. The polyester (hereinafter also referred to as polycondensate) is advantageously obtained by reacting a polyol, a polycarboxylic acid or a non-aromatic monocarboxylic acid. and an aromatic monocarboxylic acid.

  According to one embodiment, the nonaromatic monocarboxylic acid content is between 5 and 80% by weight, preferably between 20 and 70% by weight, for example from 25 to 65% by weight relative to the total weight of the polycondensate. According to another embodiment, the polyesters are advantageously obtained from the reaction of a polyol, a polycarboxylic acid and at least one nonaromatic monocarboxylic acid, said monocarboxylic acid being in a significant amount.

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

  One of the constituents necessary for the preparation of the polycondensates according to the invention is a polyol, preferably comprising 3 to 6 hydroxyl groups, 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 intercalated in the chain (ether function). Said polyol is preferably a saturated hydrocarbon compound, linear or branched, comprising 3 to 18 carbon atoms, especially 3 to 12 or even 4 to 10 carbon atoms, and 3 to 6 hydroxyl groups (OH).

  It may be chosen from, alone or as a mixture: triols, such as 1,2,4-butanetriol, 1,2,6-hexanetriol, trimethylolethane, trimethylolpropane or glycerol; tetraols, such as pentaerythritol (tetramethylolmethane), erythritol, diglycerol or ditrimethylolpropane; Pentols such as xylitol; hexols such as sorbitol and mannitol; or dipentaerythritol or triglycerol.

  Preferably, the polyol is chosen from glycerol, pentaerythritol, diglycerol, sorbitol and their mixtures; and most preferably the polyol is a tetraol such as pentaerythritol. The polyol, or the 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 nonaromatic monocarboxylic acid. The nonaromatic monocarboxylic acid may be saturated or unsaturated, linear, branched and / or cyclic, comprising 6 to 32 carbon atoms, especially 8 to 28 carbon atoms, and still more preferably 10 to 24 or even 12 to 20 carbon atoms. . It is of course possible to use a mixture of such nonaromatic monocarboxylic acids. Non-aromatic monocarboxylic acid is understood to mean a compound of formula RCOOH, in which R is a linear, branched and / or cyclic saturated or unsaturated hydrocarbon radical containing 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 temperature 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, tridecanoic acid, myristic acid, palmitic acid, stearic acid, isostearic acid, arachidic acid, behenic acid, cerotic acid (hexacosanoic); 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 previously mentioned nonaromatic monocarboxylic acids having a melting point of greater than or equal to 25 ° C., mention may be made, alone or as a mixture: of the saturated monocarboxylic acids: decanoic acid (capric acid), lauric acid, tridecanoic acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, cerotic acid (hexacosanoic acid); from unsaturated but nonaromatic monocarboxylic acids: petroselinic acid, vaccenic acid, elaidic acid, gondoic acid, gadoleic acid, erucic acid, nervonic acid.

  Preferably, 2-ethylhexanoic acid, isooctanoic acid, lauric acid, myristic acid, isoheptanoic acid, isononanoic acid, nonanoic acid, acidpalmitic 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 an aromatic monocarboxylic acid. This acid may comprise 7 to 11 carbon atoms, optionally further substituted with 1 to 3 alkyl radicals, saturated or unsaturated, linear, branched and / or cyclic, which contain 1 to 32 carbon atoms, in particular 2 to 12, or even 3 to 8 carbon atoms. It is of course possible to use a mixture of such aromatic monocarboxylic acids. By aromatic monocarboxylic acid is meant a compound of formula R'COOH, in which R 'is an aromatic hydrocarbon radical containing 6 to 10 carbon atoms, and in particular the benzoic and naphthoic radicals. Said radical R 'may also be substituted with 1 to 3 alkyl radicals, saturated or unsaturated, linear, branched and / or cyclic, comprising 1 to 32 carbon atoms, especially 2 to 12 or even 3 to 8 carbon atoms; and especially chosen from methyl, ethyl, propyl, isopropyl, butyl, isobutyl, terbutyl, pentyl, isopentyl, neopentyl, cyclopentyl, hexyl, cyclohexyl, heptyl, isoheptyl, octyl or isooctyl. Among the aromatic monocarboxylic acids that may be used, mention may be made, alone or as a mixture, of benzoic acid, o-toluic acid, m-toluic acid, ptoluic acid, 1-naphthoic acid. , 2-naphthoic acid, 4-tert-butyl-benzoic acid, 1-methyl-2-naphthoic acid, 2-isopropyl-1-naphthoic acid. Preferably, it is possible to use benzoic acid, 4-tert-butylbenzoic acid, otoluic acid, m-toluic acid or 1-naphthoic acid, alone or in mixtures; and even better, benzoic acid alone.

  Said aromatic monocarboxylic acid, or the mixture of said acids, is preferably 0.1 to 10% by weight, especially 0.5 to 9.95% by weight, more preferably 1 to 9.5% by weight, or even 1, 5 to 8% by weight, of the total weight of the final polycondensate.

  The polyester may be obtained from a linear, branched and / or cyclic, saturated or unsaturated, nonaromatic monocarboxylic acid comprising 10 to 32 carbon atoms, in particular 12 to 28 carbon atoms and more preferably 12 to 24 carbon atoms. carbon; and having a melting point greater than or equal to 25 ° C., in particular greater than or equal to 28 ° C. or even 30 ° C. It is of course possible to use a mixture of such nonaromatic monocarboxylic acids.

  It has been found that when using such an acid, in the quantities indicated, 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 quantity of waxes. usually present in the composition envisaged. 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 9 to 31 carbon atoms, especially 11 to 27 carbon atoms, and still better 11 to 23 carbon atoms. Preferably, the radical R is saturated. Even better, said radical R is linear or branched, and preferably C11-C21. Among the nonaromatic monocarboxylic acids having a melting point greater than or equal to 25 ° C., which may be used, 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, lauric acid, palmitic acid, stearic acid, behenic acid and mixtures thereof may be used, and even more preferably stearic acid or behenic acid alone.

  Said nonaromatic monocarboxylic acid having a melting temperature greater than or equal to 25 ° C., or a mixture of said acids, preferably represents 22 to 80% by weight, in particular 25 to 75% by weight, or even 27 to 70% by weight, and better 28 to 65% by weight, of the total weight of the final polycondensate.

  The polyester may be obtained from a saturated or unsaturated, linear, branched and / or cyclic, nonaromatic monocarboxylic acid comprising 6 to 32 carbon atoms, in particular 8 to 28 carbon atoms and more preferably 10 to 20, or even 12 to 18 carbon atoms; and having a melting temperature strictly below 25 ° C., in particular below 20 ° C. or even 15 ° C. It is of course possible to use a mixture of such nonaromatic monocarboxylic acids. 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 better 9 to 19 carbon atoms, or even 11 to 17 carbon atoms. Preferably, the radical R is saturated. Even better, said radical R is linear or branched, and preferably C5-C31. Among the nonaromatic monocarboxylic acids having a melting temperature of less than 25 ° C., which may be used, mention may be made, alone or as a mixture: of the saturated monocarboxylic acids: 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, isononanoic acid, isostearic acid; - Among the unsaturated but nonaromatic monocarboxylic acids: caproleic acid, obtusilic acid, undecylenic acid, dodecylenic acid, linderic acid, myristoleic acid, physeteric acid, tsuzuic acid, palmitoleic acid, oleic acid, linoleic acid, linolenic acid, arachidonic acid. Preferably, it is possible to use isooctanoic acid, isononanoic acid, isostearic acid, and mixtures thereof, and even more preferably isostearic acid alone. Said nonaromatic monocarboxylic acid with a melting temperature of less than 25 ° C., or the mixture of said acids, preferably represents 0.1 to 35% by weight, in particular 0.5 to 32% by weight, or even 1 to 30% by weight, and preferably 2 to 28% by weight, of the total weight of the final polycondensate.

  According to one embodiment, the polyester is obtained from a nonaromatic monocarboxylic acid having a melting point greater than or equal to 25 ° C. and from 30 ° C. and from a non-aromatic monocarboxylic acid having a temperature Melting point below 25 C.

  In this embodiment, preferably, the total amount of nonaromatic monocarboxylic acids, to have those having a melting point greater than 25 ° C. and those having a melting temperature below 25 ° C., is advantageously between 30 and 80 ° C. % by weight, especially between 40 and 70% by weight, or even between 45 and 65% by weight, and better still between 50 and 60% 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, saturated or unsaturated, or even aromatic, linear, branched and / or cyclic, comprising at least 2 carboxylic groups COOH, especially 2 to 4 COOH groups; and / or a cyclic anhydride of such a polycarboxylic acid. It is of course possible to use a mixture of such polycarboxylic acids and / or anhydrides.

  Said polycarboxylic acid may in particular be chosen from linear, branched and / or cyclic, saturated or unsaturated or even aromatic polycarboxylic acids, comprising 3 to 50, especially 3 to 40, carbon atoms, in particular 3 to 36 or even 3 to 18 carbon atoms. and still more preferably 4 to 12 carbon atoms, or even 4 to 10 carbon atoms; Said acid comprises at least two carboxylic groups COOH, preferably from 2 to 4 COOH groups.

  Preferably, said polycarboxylic acid is aliphatic and comprises 3 to 36 carbon atoms, especially 3 to 18 carbon atoms, or even 4 to 12 carbon atoms; or said polycarboxylic acid is aromatic and comprises 8 to 12 carbon atoms. It preferably comprises 2 to 4 COOH groups.

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

  Wherein 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 7, in particular 6 carbon atoms, saturated or unsaturated, or even aromatic. Preferably, A and B represent a hydrogen atom or together form an aromatic ring comprising a total of 6 carbon atoms.

  Among the 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, acid malonic acid, succinic acid, phthalic acid, terephthalic acid, isophthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, pimelic acid, sebacic acid, azelaic acid, acid glutaric 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; tetracarboxylic acids such as butanetetracarboxylic acid and pyromellitic acid; cyclic anhydrides of these acids, 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. Said polycarboxylic acid and / or its cyclic anhydride is preferably 5 to 40% by weight, especially 10 to 30% by weight, and more preferably 14 to 25% by weight, of the total weight of the final polycondensate.

  The polycondensate may further comprise hydroxyl (OH) and / or carboxylic (COOH) functional silicone. 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 employed. This silicone may be of the formula: ## STR2 ## Wherein: 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 radical, saturated or unsaturated, or 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 the formula (CH 2) a- with a = 1-12, and especially methylene, ethylene, propylene or 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, and the radicals cycloalkyls, in particular the cyclohexyl radical, aryl radicals, in particular phenyl and naphthyl radicals, arylalkyl radicals, in particular benzyl and phenylethyl radicals, 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,--diol or α,--dicarboxylic polyalkylsiloxanes, and in particular α, β-diol polydimethylsiloxanes and α, β-carboxylic polydimethylsiloxanes; α,--diol or α,--dicarboxylic polyarylsiloxanes and in particular α,--diol or α,--dicarboxylic polyphenylsiloxanes; silanol-functional polyarylsiloxanes such as polyphenylsiloxane; silanol-functional polyalkylsiloxanes such as polydimethylsiloxane; silanol-functional polyaryl / alkylsiloxanes such as polyphenyl / methylsiloxane or else polyphenyl / propylsiloxane. In particular, the α, β-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 polycondensate.

  In a preferred embodiment of the invention, the aromatic monocarboxylic acid is present in a molar amount less than or equal to that of the nonaromatic monocarboxylic acid; in particular the ratio between the number of moles of aromatic monocarboxylic acid and the number of moles of nonaromatic monocarboxylic acid is preferably between 0.08 and 0.70, in particular between 0.10 and 0.60, in particular between 0.12 and 0.40. It has been found that this makes it possible in particular to obtain a polymer that is advantageously soluble in the oily media generally used to formulate cosmetic compositions such as lipsticks or foundations; Moreover, the film obtained has adequate rigidity and flexibility for its use in this type of formulation, while having a shine and brightness hold as desired. According to one embodiment, the polyester is capable of be obtained by reacting: at least one polyol comprising 3 to 6 hydroxyl groups; at least one non-aromatic monocarboxylic acid comprising 6 to 32 carbon atoms; at least one aromatic monocarboxylic acid comprising 7 to 11 carbon atoms, at least one polycarboxylic acid comprising at least 2 carboxylic groups COOH and / or a cyclic anhydride of such a polycarboxylic acid. For example, the polyester is selected from benzoic acid / isophthalic acid / isostearic acid / pentaerythritol polymers, benzoic acid / isophthalic acid / stearic acid / pentaerythritol polymers and mixtures thereof.

  Preferably, the nonaromatic monocarboxylic acid does not comprise a free OH group.

  According to one embodiment, the polycondensate may be obtained by reacting: from 10 to 30% by weight, relative to the total weight of the polycondensate, of at least one polyol comprising 3 to 6 hydroxyl groups; from 30 to 80% by weight, relative to the total weight of the polycondensate, of at least one linear, branched and / or cyclic, saturated or unsaturated non-aromatic monocarboxylic acid comprising 6 to 32 carbon atoms; from 0.1 to 10% by weight, relative to the total weight of the polycondensate, of at least one aromatic monocarboxylic acid comprising 7 to 11 carbon atoms, optionally further substituted with 1 to 3 linear or saturated, saturated or unsaturated alkyl radicals , branched and / or cyclic, which contain 1 to 32 carbon atoms; from 5 to 40% by weight, relative to the total weight of the polycondensate, of at least one polycarboxylic acid, saturated or unsaturated, or even aromatic, linear, branched and / or cyclic, comprising at least 2 carboxylic groups COOH, in particular 2 at 4 COOH groups; and / or a cyclic anhydride of such a polycarboxylic acid.

  According to one embodiment, said polycondensate can be obtained by reacting: from 15 to 30% by weight, relative to the total weight of the polycondensate, of at least one polyol comprising 3 to 6 hydroxyl groups; from 5 to 40% by weight, relative to the total weight of the polycondensate, of at least one linear, branched and / or cyclic, saturated or unsaturated non-aromatic monocarboxylic acid comprising 6 to 32 carbon atoms; from 10 to 55% by weight, relative to the total weight of the polycondensate, of at least one aromatic monocarboxylic acid comprising 7 to 11 carbon atoms, optionally further substituted with 1 to 3 linear or saturated, saturated or unsaturated alkyl radicals, branched and / or cyclic, which contain 1 to 32 carbon atoms; from 10 to 25% by weight, relative to the total weight of the polycondensate, of at least one polycarboxylic acid, saturated or unsaturated, or even aromatic, linear, branched and / or cyclic, comprising at least 2 carboxylic groups COOH, in particular 2 at 4 COOH groups; and / or a cyclic anhydride of such a polycarboxylic acid.

  Preferably, the composition comprises a polycondensate as defined above, such that the ratio between the number of moles of aromatic monocarboxylic acid and the number of moles of nonaromatic monocarboxylic acid is between 0.08 and 0.70. .

  Preferably, the composition comprises a polycondensate as defined above, provided that when the polycondensate comprises 10% by weight of at least one aromatic monocarboxylic acid comprising 7 to 11 carbon atoms, optionally further substituted with 1 to 3 radicals. saturated or unsaturated, linear, branched and / or cyclic alkyls, which comprise 1 to 32 carbon atoms; then the ratio between the number of moles of aromatic monocarboxylic acid and the number of moles of non-aromatic monocarboxylic acid is between 0.08 and 0.70.

  Preferably, the polycondensate can be obtained by reacting: at least one polyol chosen from, alone or as a mixture, 1,2,6-hexanetriol, trimethylolethane, trimethylolpropane and glycerol; pentaerythritol, erythritol, diglycerol, ditrimethylolpropane; xylitol, sorbitol, mannitol, dipentaerythritol and / or triglycerol; preferably present in an amount of 10 to 30% by weight, especially 12 to 25% by weight, and more preferably 14 to 22% by weight, relative to the total weight of the final polycondensate; at least one nonaromatic monocarboxylic acid chosen from, alone or as a mixture, 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, 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; preferably present in an amount of 30 to 80% by weight, especially 40 to 75% by weight, and more preferably 45 to 70% by weight, relative to the total weight of the final polycondensate; at least one aromatic monocarboxylic acid chosen from, alone or as a mixture, benzoic acid, o-toluic acid, m-toluic acid, p-toluic acid, 1-naphthoic acid, 2-naphthoic acid, 4-tert-butyl benzoic acid, 1-methyl-2-naphthoic acid, 2-isopropyl-1-naphthoic acid; preferably present in an amount of 0.1 to 10% by weight, especially 1 to 9.5% by weight, or even 1.5 to 8% by weight, relative to the total weight of the final polycondensate; and at least one polycarboxylic acid or one of its anhydrides 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, pimelic acid, sebacic acid, azelaic acid, glutaric acid, adipic acid, fumaric acid, maleic acid ; cyclohexanetricarboxylic acid, trimellitic acid, 1,2,3-benzenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid; butanetetracarboxylic acid, pyromellitic acid, phthalic anhydride, trimellitic anhydride, maleic anhydride and succinic anhydride; preferably present in an amount of 5 to 40% by weight, especially 10 to 30% by weight, and more preferably 14 to 25% by weight, relative to the total weight of the final polycondensate.

  According to another embodiment, the polycondensate can be obtained by reacting: from 10 to 30% by weight, relative to the total weight of the polycondensate, of at least one polyol comprising 3 to 6 hydroxyl groups; from 22 to 80% by weight, relative to the total weight of the polycondensate, of at least one saturated or unsaturated, linear, branched and / or cyclic, nonaromatic monocarboxylic acid comprising 10 to 32 carbon atoms, and having a melting temperature greater than or equal to 25 C; from 0.1 to 35% by weight, relative to the total weight of the polycondensate, of at least one linear, branched and / or cyclic, saturated or unsaturated, non-aromatic monocarboxylic acid comprising 6 to 32 carbon atoms, and having a melting temperature strictly below 25 C; from 0.1 to 10% by weight, relative to the total weight of the polycondensate, of at least one aromatic monocarboxylic acid comprising 7 to 11 carbon atoms, optionally further substituted with 1 to 3 alkyl radicals, saturated or unsaturated, linear, branched and / or cyclic, which contain 1 to 32 carbon atoms; from 5 to 40% by weight, relative to the total weight of the polycondensate, of at least one polycarboxylic acid, saturated or unsaturated, or even aromatic, linear, branched and / or cyclic, comprising at least 2 carboxylic groups COOH, in particular 2 at 4 COOH groups; and / or a cyclic anhydride of such a polycarboxylic acid.

  Preferably, the polycondensate is obtainable by reaction of: at least one polyol chosen from, alone or as a mixture, glycerol, pentaerythritol, sorbitol and their mixtures, and even better pentaerythritol alone; present in an amount of 10 to 30% by weight, especially 12 to 25% by weight, and more preferably 14 to 22% by weight, relative to the total weight of the final polycondensate; at least one non-aromatic monocarboxylic acid chosen from, alone or as a mixture, 2-ethylhexanoic acid, isooctanoic acid, lauric acid, palmitic acid, isostearic acid and isononanoic acid, stearic acid, behenic acid and mixtures thereof, and even better isostearic acid alone or stearic acid alone; present in an amount of 30 to 80% by weight, especially 40 to 75% by weight, and more preferably 45 to 70% by weight, relative to the total weight of the final polycondensate; at least one aromatic monocarboxylic acid chosen from, alone or as a mixture, benzoic acid, o-toluic acid, m-toluic acid, 1-naphthoic acid, and even more preferably benzoic acid; alone; present in an amount of 0.1 to 10% by weight, especially 1 to 9.5% by weight, or even 1.5 to 8% by weight relative to the total weight of the final polycondensate; and at least one polycarboxylic acid or one of its anhydrides chosen from, alone or as a mixture, phthalic anhydride and isophthalic acid, and even better isophthalic acid alone; present in an amount of 5 to 40% by weight, especially 10 to 30% by weight, and more preferably 14 to 25% by weight, relative to the total weight of the final polycondensate.

  Preferably, the polycondensate 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 has a weight average molecular weight (Mw) of between 1500 and 300,000, or even between 2000 and 200,000, and especially between 3,000 and 100,000. The average molecular weight can be determined by gel permeation chromatography. or by light scattering, depending on the solubility of the polymer under consideration.

  Preferably, the polycondensate has a viscosity, measured at 110 ° C., of between 20 and 4000 mPa.s, in particular between 30 and 3500 mPa.s, even between 40 and 3000 mPa.s and even more preferably between 50 and 2500 mPa.s. . This viscosity is measured as described before the examples.

  Moreover, 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, hydrogenated polyisobutene, 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 may be prepared by the esterification / polycondensation processes usually employed by those skilled in the art. By way of illustration, a general method of preparation consists in: - mixing the polyol and the aromatic and nonaromatic monocarboxylic acids, - heating the mixture under an inert atmosphere, first up to the melting point (generally 100-130 ° C. C) and then at a temperature between 150 and 220 C until complete consumption of the monocarboxylic acids (reached when the acid number is less than or equal to 1), preferably by distilling as the water formed, then - optionally cooling the mixture to a temperature of between 90 and 150 ° C, - adding the polycarboxylic acid and / or the cyclic anhydride, and optionally the silicone with hydroxyl or carboxyl functions, all at once or from sequentially, and then - to heat again at a temperature of less than or equal to 220 ° C., in particular between 170 ° C. and 220 ° C., preferably continuing to remove the water formed, up to obtaining the required characteristics in terms of acid number, 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- (3,5 di-tert-butyl-4-hydroxyphenyl) propionate 2,5-di-tert-butyl hydroquinone, 2,2-methyl-bis- (4-methyl-6-tertbutyl phenol), 2,2-methylene-bis- 6-tert-butylphenol), 4,4-butylidene-bis (6-tert-butyl-m-cresol), N, N-hexamethylene bis (3,5-di-tert-butyl-4-hydroxyhydrocinnamamide), pentaerythritol tetrakis (3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate), in particular 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; 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-ditertbutyl) pentaerythritol diphosphite, especially that marketed by CIBA under the name IRGAFOS 126; bis (2,4-bis) [2-phenylpropan-2-yl] phenyl) pentaerythritol diphosphite, triphenylphosphite, (2,4-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-tertbutylphenyl) phosphite, in particular that marketed by CIBA under the name IRGAFOS P-EPQ; distearyl thiodipropionate especially that marketed by CIBA under the name IRGANOX PS802; 2,4-bis (octylthiomethyl) o-cresol, especially that marketed by CIBA under the name IRGANOX 1520; 4,6-bis (dodecylthiomethyl) o-cresol including that marketed by CIBA under the name IRGANOX 1726.

  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 cosmetic composition.

  According to one embodiment, the amount of polycondensate is between 10 and 20 by weight.

  The second composition advantageously comprises an oil, especially a non-volatile oil. The non-volatile oil 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. composition.

  According to one embodiment, the non-volatile oil may represent from 35 to 60% by weight.

  For the purposes of the present invention, the term "non-volatile oil" means an oil having a vapor pressure of less than 0.13 Pa. The non-volatile oils may be hydrocarbon oils, silicone oils, fluorinated oils, or their mixtures.

  For the purposes of the present invention, the term "silicone oil" means an oil comprising at least one silicon atom, and in particular at least one Si-O group.

  The term "hydrocarbon-based oil" means an oil containing mainly hydrogen and carbon atoms and optionally oxygen, nitrogen, sulfur and / or phosphorus atoms. By hydrocarbon is meant an oil containing only hydrogen and carbon atoms. The non-volatile oils may in particular be chosen from fluorinated hydrocarbon oils which may be fluorinated and / or non-volatile silicone oils. Non-volatile hydrocarbon oils that may especially be mentioned include: hydrocarbon oils of vegetable origin, such as phytostearyl esters, such as phytostearyl oleate, phytostearyl isostearate and lauroyl / octyldodecyl glutamate / phytostearyl (AJINOMOTO) , ELDEW PS203), triglycerides consisting of esters of fatty acids and of glycerol whose fatty acids may have various chain lengths of C4 to C24, the latter may be linear or branched, saturated or unsaturated; these oils are in particular heptanoic or octanoic triglycerides, wheat germ, sunflower, grape seed, sesame, corn, apricot, castor oil, shea, avocado, olive, soya, sweet almond, palm, rapeseed, cotton, hazelnut, macadamia, jojoba, alfalfa, poppy, pumpkin, squash, blackcurrant, evening primrose, millet, barley quinoa, rye, safflower, bancoulier, passionflower, muscat rose; shea butter; or the triglycerides of caprylic / capric acids, such as those sold by the company Stearineries Dubois or those sold under the names MIGLYOL 810, 812 and 818 by the company DYNAMIT NOBEL, synthetic ethers containing from 10 to 40 carbon atoms; linear or branched hydrocarbons of mineral or synthetic origin, such as petroleum jelly, polydecenes, hydrogenated polyisobutene such as Parleam U, squalane and their mixtures, and in particular hydrogenated polyisobutene, synthetic esters such as oils of formula R, 000R2 in which R represents the residue of a linear or branched acid containing from 1 to 40 carbon atoms and R2 represents a hydrocarbon chain, especially branched, containing from 1 to 40 carbon atoms, provided that R, + R2 is 10. The esters may especially be chosen from esters, in particular of fatty acids, for example cetostearyl octanoate, esters of isopropyl alcohol, such as isopropyl myristate or isopropyl palmitate. ethyl palmitate, 2-ethylhexyl palmitate, isopropyl stearate or isostearate, isostearyl isostearate, octyl stearate, hydroxylated esters such as ostearyl, octyl hydroxystearate, diisopropyl adipate, heptanoates, and especially isostearyl heptanoate, octanoates, decanoates or ricinoleates of alcohols or polyalcohols such as propylene glycol dioctanoate, cetyl octanoate , tridecyl octanoate, 4-diheptanoate and 2-hexyl ethyl palmitate, alkyl benzoate, polyethylene glycol diheptanoate, propylene glycol dietyl 2-hexanoate and mixtures thereof, benzoates of C12-C15 alcohols, hexyl laurate, neopentanoic acid esters such as isodecyl neopentanoate, isotridecyl neopentanoate, isostearyl neopentanoate, octyldocecyl neopentanoate, esters of the acid isononanoic such as isononyl isononanoate, isotridecyl isononanoate, octyl isononanoate, hydroxylated esters such as isostearyl lactate, di-isostearyl malate; polyol esters and pentaerythritol esters, such as dipentaerythritol tetrahydroxystearate / tetraisostearate, branched-chain and / or unsaturated carbon-chain liquid fatty alcohols containing from 12 to 26 carbon atoms, such as 2-octyldodecanol, isostearyl alcohol, oleic alcohol, 2-hexyldecanol, 2-butyloctanol, and 2-undecylpentadecanol, - higher fatty acids such as oleic acid, linoleic acid, linolenic acid and mixtures thereof, and - di-alkyl carbonates, the 2 alkyl chains may be identical or different, such as dicaprylyl carbonate sold under the name CETIOL CC, by COGNIS.

  The non-volatile silicone oils that may be used in the composition may be non-volatile polydimethylsiloxanes (PDMS), polydimethylsiloxanes comprising pendant alkyl or alkoxy groups and / or silicone chain ends, groups each having from 2 to 24 carbon atoms, phenyl silicones such as phenyl trimethicones, phenyl dimethicones, phenyl trimethylsiloxy diphenylsiloxanes, diphenyl dimethicones, diphenyl methyldiphenyl trisiloxanes, and 2-phenylethyl trimethylsiloxysilicates, dimethicones or phenyltrimethicones with a viscosity less than or equal to 100 cSt, and mixtures thereof. According to another embodiment, the silicone oil corresponds to the formula ## STR1 ## in which the groups R represent, independently of one another, a methyl or a phenyl. Preferably in this formula, said organopolysiloxane comprises at least three phenyl groups, for example at least four or at least five. Mixtures of the phenyl organopolysiloxanes described above can be used. For example, mixtures of organopolysiloxane triphenyl, tetra- or penta-phenyl. According to another embodiment, the silicone oil corresponds to the formula ## STR1 ## in which Me represents methyl and Ph represents phenyl. Such phenyl silicone is especially manufactured by Dow Corning under the reference Dow Corning 555 Cosmetic Fluid (INCI name: trimethyl pentaphenyl trisiloxane). The reference Dow Corning 554 Cosmetic Fluid can also be used. The non-volatile oil is preferably apolar, in the sense that its delta solubility parameter a is equal to 0. According to one embodiment, the second composition is transparent.

  When the second composition is transparent, it advantageously contains less than 5% of pigments, preferably less than 2%, more preferably less than 1%. The compositions of the product may be in the form of a cast product and for example in the form of a stick or stick, or in the form of a cup which can be used by direct contact or sponge. In particular, they find an application as a cast foundation, blush or cast eyelid, lipstick, base or lip care balm, concealer product, nail polish. They may also be in the form of a soft paste or gel, more or less fluid cream, or packaged liquid 40 in a tube.

  The compositions of the product according to the invention may constitute in particular a cosmetic composition for the care of the face, the neck, the hands or the body (for example care cream, sun oil, body gel), a make-up composition ( for example makeup gel, cream, stick) or an artificial tanning or skin protection composition.

  The compositions of the product according to the invention may be in the form of a skin care composition and / or superficial body growths or in the form of a sunscreen composition, personal hygiene, especially in the form of deodorant. They are then in particular in non-colored form. They can then be used as a skin care base, skin dander or lips (lip balms, protecting the lips from cold and / or sun and / or wind, care cream for the skin, nails or skin. hair).

  By cosmetically acceptable is meant in the sense of the invention a composition of appearance, smell and pleasant touch.

  Each composition of the product according to the invention may be in any galenical form normally used for topical application and especially in the form of an oily or aqueous solution, an oily or aqueous gel, an oil-in-water emulsion. or water-in-oil, a multiple emulsion, an oil dispersion in water through vesicles, the vesicles being located at the oil / water interface, or a powder. Each composition can be fluid or solid.

  According to one mode of implementation, the first or the second composition, or both, are of continuous fat phase and preferably in anhydrous form and may contain less than 5% of water, and even more preferably less than 1% of water. relative to the total weight of the first or second composition.

  Each first and second composition may have the appearance of a lotion, a cream, an ointment, a soft paste, an ointment, a solid cast or molded and especially stick or cup or compacted solid. According to one embodiment, at least one of the first and second compositions is in the form of a paste or a stick.

  Each composition may be packaged separately in the same packaging article, for example in a bi-compartmented pen, the base composition being delivered by one end of the pen and the composition of the top being delivered by the other end of the pen, each end being closed in particular sealed manner by a cap.

  Alternatively, each of the compositions may be packaged in a different packaging article.

  Preferably, the composition which is applied in the first layer is in liquid or pasty form, which is highly desirable in the case of a lipstick or an eyeliner.

  The product according to the invention can be advantageously used for the makeup of the skin and / or lips and / or integuments according to the nature of the ingredients used. In particular, the product of the invention can be in the form of a solid foundation, stick or paste of lipstick, concealer, or eye contours, eye liner, mascara, eyeshadow, body make-up product or a skin coloring product.

  Advantageously, the second composition has care, gloss or transparency properties.

  The invention further relates to a lip product, a varnish, a mascara, a foundation, a tattoo, a blush or an eyeshadow comprising a first and a second compositions as described above.

  The compositions of the product of the invention can be obtained by heating the various constituents to the melting temperature of the highest waxes, and then pouring the molten mixture into a mold (cup or thimble). They can also be obtained by extrusion as described in application EP-A-0 667 146.

  The first composition and / or the second composition of the product according to the invention may comprise at least one wax which may be present in the first composition in a content ranging from 0.1% to 40% by weight, relative to the total weight of the first composition, preferably ranging from 0.1% to 30% by weight, and preferably ranging from 0.5% to 25% by weight.

  The first composition may contain at least one pasty compound, which may advantageously be chosen from lanolin and its derivatives, polymeric silicone compounds or non-polymeric fluorinated compounds or non-vinyl polymers, in particular: homopolymers of olefins Olefin copolymers homopolymers and copolymers of hydrogenated dienes linear or branched oligomers, homo or copolymers of alkyl (meth) acrylates preferably having a C8-C30 alkyl group homo and copolymer oligomers of esters vinyls having C 8 -C 30 alkyl groups homo- and copolymeric oligomers of vinyl ethers having C 8 -C 30 alkyl groups,

  the liposoluble polyethers resulting from the polyetherification between one or more C2-C100, preferably C2-C50, diols, and the esters, and mixtures thereof.

  Dyestuffs: The first composition and / or the second composition of the product according to the invention may comprise at least one dyestuff.

  The coloring material may be chosen from pulverulent dyestuffs (especially pigments and pearlescent agents) and water-soluble dyestuffs.

  By pigments, it is necessary to include particles of any shape, white or colored, mineral or organic, insoluble in the physiological medium, intended to color the first composition. By nacres, it is necessary to include particles of any iridescent form, in particular produced by certain shellfish in their shell or else synthesized. The pigments may be white or colored, inorganic and / or organic. Among the inorganic pigments, titanium dioxide, optionally surface-treated, zirconium oxide or cerium oxides, and oxides of zinc, iron (black, yellow or red) or chromium, the violet of manganese, ultramarine blue, chromium hydrate and ferric blue, metal powders such as aluminum powder, copper powder. 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.

  Mention may also be made of effect pigments such as particles comprising an organic or inorganic, natural or synthetic substrate, for example glass, acrylic resins, polyester, polyurethane, polyethylene terephthalate, ceramics or aluminas, said substrate being covered or not with metallic substances such as aluminum, gold, silver, platinum, copper, bronze, or metal oxides such as titanium dioxide, iron oxide, chromium oxide and their mixtures.

  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 coated with iron oxides, titanium mica coated with, inter alia, blue. ferric oxide or chromium oxide, titanium mica coated with an organic pigment of the aforementioned type as well as pearlescent pigments based on bismuth oxychloride. It is also possible to use interferential pigments, in particular liquid crystal or multilayer pigments.

  The invention is illustrated in more detail in the following examples. Percentages are percentages by weight.

  Method for Measuring the Viscosity The viscosity at 80.degree. C. or at 110.degree. C. of the polymer is measured using a planar cone viscometer of the BROOKFIELD CAP 1000+ type. The adapted cone-plane is determined by the person skilled in the art, on the basis of his knowledge; in particular: - between 50 and 500 mPa.s, one can use a cone 02 - between 500 and 1000 mPa.s: cone 03 - between 1000 and 4000 mPa.s: cone 05 - between 4000 and 10000 mPa.s: cone 06

  Example 1 Synthesis of pentaerythritol benzoate / isophthalate / isostearate

  In a reactor equipped with a mechanical stirrer, an inlet of argon and a distillation system, 20 g of benzoic acid, 280 g of isostearic acid and 100 g of pentaerythritol are charged, and then the mixture is gradually heated. 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 held for about 2 hours. The temperature is again raised to 220 ° C and maintained until an acid number of 1 or less is reached, 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 the mixture is heated again gradually to 220 ° C. for about 11 hours. 405 g of pentaerythrityl benzoate / isophthalate / isostearate polycondensate are thus obtained in the form of a very thick oil.

  The polycondensate has the following characteristics: - Soluble at 50% by weight, at 25 ° C., in the Parleam - Acid number = 3.7 - Hydroxyl value = 72 - Mw = 59400 - n11ooc = 1510 mPa.s - ratio between the number of moles of aromatic monocarboxylic acid and the number of moles of nonaromatic monocarboxylic acid: 0.16.

  EXAMPLE 2 Synthesis of pentaerythritol benzoate / isophthalate / isostearate In a reactor equipped with mechanical stirring, an inlet of argon and a distillation system, 35 g of benzoic acid, 270 g isostearic acid and 80 g of pentaerythritol and then gradually heated, under a gentle stream of argon, to 110-130 C to obtain a homogeneous solution. The temperature is then gradually increased to 180 ° C and held for about 2 hours. The temperature is again raised to 220 ° C and maintained until an acid number of 1 or less is reached, which takes about 11 hours. It is cooled to a temperature of between 100 and 130 ° C., 65 g of isophthalic acid are then introduced and the mixture is heated again gradually to 220 ° C. for about 5 hours. 380 g of pentaerythrityl benzoate / isophthalate / isostearate polycondensate are thus obtained in the form of an oil.

  The polycondensate has the following characteristics: - soluble to 50% by weight, at 25 ° C., in the Parleam 25 - acid number = 5.5 - hydroxyl number = 103 - Mw = 7200 - n800c = 700 mPa.s the ratio of the number of moles of aromatic monocarboxylic acid to the number of moles of nonaromatic monocarboxylic acid: 0.30.

  Example 3 Synthesis of pentaerythritol benzoate / isophthalate / stearate

  In a reactor equipped with mechanical stirring, an inlet of argon and a distillation system, 10 g of benzoic acid, 370 g of stearic acid and 95 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 held for about 2 hours. The temperature is again raised to 220 ° C and maintained until an acid number of 40 is obtained, less than or equal to 1, which takes about 11 hours. It is cooled to a temperature of between 100 and 130 ° C., then 90 g of isophthalic acid are introduced and heated again gradually to 220 ° C. for about 11 hours. 430 g of pentaerythrityl benzoate / isophthalate / stearate polycondensate are thus obtained in the form of a very thick oil. The polycondensate has the following characteristics: - soluble to 50% by weight, at 70 ° C., in the Parleam - acid number = 10.8 - Mw = 8800 50 - n800c = 360 mPa.s

  Examples A to R In a manner similar to the previous examples, the following polycondensates are prepared (0/0 by weight): Polyol Acidic Acid Acid Non-Solubility (% and Nature) Aromatic aromatic polycarboxylic acid (% and nature) or (% and nature) anhydride (% and nature) Example A 21.6 3.9 19.5 27.5% at 25 C Pentaerythritol benzoic Isostearic acid + isophthalic 27.5% isononanoic Example B 16.8 1.8 15.9 65, 5 to 70 ° C Pentaerythritol Benzoic Isophthalic Behenic Acid Example C 20 4 20 56 at 25 ° C Pentaerythritol Terbutylbenzoy Isostearic Isophthalic Acid Example D 17.4 8.6 16 58 at 25 ° C Benzoic Glycerol Isosteal Isostearic Acid Isophthalic Example E 20.7 8.5 15.9 54.9 at 25 ° C. glycerol terbutyl- isononanoic benzoic adipic acid Example F 25.5 2 13.7 58.8 at 25 ° C. diglycerol benzoic Ison-isocyananoic acid Example G 28 2 14 56 at 25 ° C ditrimethylolpr 1-naphthoic acid isostearic isophthalic opaque Example H 25.2 5.8 12.6 56.3 C trimethylolpro benzoic isononanoic acid isophthalic acid Example I 2.1 14.6 58.3 at 25 C trimethylolpro m-toluic isostearic anhydride pane phthalic Example J 21.9 6.3 13.5 58.3 at 25 C erythritol terbutyl Isooctanoic benzoic sebacic acid Example K 20.4 6.1 20.4 53.1 at 25 ° C benzoic dipentaerythritol PRIPOL isostearic ol 1009 ** Example L 28 2 14 40% at 25 C ditrimethylolpr 1-naphthoic acid isostearic acid + isophthalic opaque 16 % 2-ethylhexanol Example 5 M 21.3 6.4 17 27.7% at 25 C pentaerythritol benzoic Nonanoic + succinic acid 27.6% isoheptanoic Example N 17.4 8.6 16 58 at 70 C benzoic glycerol stearic acid isophthalic Example O 25.5 2 13.7 58.8 to 70 C benzoyl diglycerol isophthalic myristic acid Example P 25.5 3.9 15.7 54.9 to 70 C benzoic diglycerol sebacic lauric acid Example Q 20.4 6, 1 20.4 53.1 at 70 C benzoic dipentaerythritol BEPOL olene 1009 ** Example R 25.2 5.8 12.6 31.1% at 70 C trimethylolpro benzoic Stearic acid + isophthalic 25.3% behenic acid at 25 ° C indicates that the polymer is 50% by weight soluble at 25 ° C in Parleam; at 70 ° C indicates that the polymer is soluble at 50% by weight, at 70 ° C., in the Parléam ** PRIPOL 1009 from Uniqema: oleic acid dimer Example 4: Synthesis of pentaerythritol benzoate / isophthalate / isostearate / stearate

  In a reactor equipped with mechanical stirring, an argon inlet and a distillation system, 20 g of benzoic acid, 210 g of stearic acid, 70 g of isostearic acid and 100 g of isostearic acid are charged. of pentaerythritol, and then gradually heated under a gentle stream of argon, to 110-130 C to obtain a homogeneous solution. The temperature is then gradually increased to 180 ° C and held 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 the mixture is heated again gradually to 220 ° C. for about 11 hours. 450 g of pentaerythrityl benzoate / isophthalate / isostearate / stearate polycondensate are thus obtained in the form of a very thick oil. The polycondensate has the following characteristics: -50% by weight, at 70 ° C., in the Parleam® - Acid number = 7.1-n-1oco = 850 mPa.s 25 -Mw = 28,500 -the ratio of the number of mole of aromatic monocarboxylic acid and the number of moles of nonaromatic monocarboxylic acids: 0.166.

  Example 5 Synthesis of pentaerythritol behenate / benzoate / isophthalate / isostearate In a reactor equipped with mechanical stirring, an inlet of argon and a distillation system, 20 g of benzoic acid, 140 g of behenic acid, 140 g of isostearic acid and 100 g of pentaerythritol, and then heated gradually, under a gentle stream of argon, to 110-130 C to obtain a homogeneous solution. The temperature is then gradually increased to 180 ° C and held for about 2 hours.

  The temperature is again raised to 220 ° C and maintained until an acid number of 1 or less is reached, 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 the mixture is heated again gradually to 220 ° C. for about 11 hours. 440 g of pentaerythrityl behenate / benzoate / isophthalate / isostearate polycondensate are thus obtained in the form of a very thick oil.

  The polycondensate has the following characteristics: - soluble to 50% by weight, at 70 ° C., in the Parléam - acid number = 4.2 - rl11ooc = 2050 mPa.s - ratio between the number of moles of aromatic monocarboxylic acid and the number of moles of nonaromatic monocarboxylic acids: 0.181.

  Examples a to i In a manner similar to the preceding examples, the following polycondensates are prepared (the% are by weight): Polyol Acid Acid Acids non-Solubility (% and nature) aromatic aromatic polycarboxylic acids (% and nature) or (% and nature) anhydride (% and nature) Example a 20.4 4.1 18.3 28.6% at 25 C Pentaerythritol benzoic Isostearic acid + isophthalic 14.3% isononanoic + 14.3% stearic Example b 20 4 20 18% to 25 C Pentaerythritol benzoic Isostearic acid + isophthalic 38% stearic Example c 20 4 20 28% at 25 C Pentaerythritol benzoic Isostearic acid + isophthalic 28% stearic Example d 19.8 4 19.8 40.6% at 25 C Pentaerythritol benzoic Isostearic acid + isophthalic 15.8% stearic Example e 19.8 4 19.8 48.5% at 25 ° C Pentaerythritol benzoic Isostearic acid + isophthalic 7.9% stearic Example f 19.8 4 19.8 52.4% at 25 ° C Pentaerythritol benzoic Isostearic acid + isophthalic 4% stearic Example g 25.5 3.9 15.7 34.9% at 25 ° C. Benzoic diglycerol Isostearic acid + sebacic acid 20% lauric Example h 25 2.1 14.6 18.3% at 70 ° C trimethylolpro-m-toluic isostearic anhydride + phthalic pane 40% behenic Example i 21 , 9 6.3 terbutyl-13.5 8.3% at 70 C erythritol benzoic acid Isooctanoic acid + sebacic acid 50% stearic Example 20.7 8.5 15.9 45.9% at 25 C glycerol terbutyl-isononanoic adipic acid benzoic acid + 9% behenic at 25 ° C indicates that the polymer is 50% by weight soluble at 25 ° C in Parleam; at 70 ° C indicates that the polymer is 50% by weight soluble at 70 ° C in Parleam.

  Example 6 Synthesis of pentaerythritol benzoate / isophthalate / laurate / PDMS In a reactor equipped with mechanical stirring, an inlet of argon and a distillation system, 150 g of benzoic acid, 165 g lauric acid and 110 g of pentaerythritol, and then heated gradually, under a gentle stream of argon, to 110-130 C to obtain a homogeneous solution. The temperature is then gradually increased to 180 ° C and held 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 15 hours. The mixture is cooled to a temperature of between 100 and 130 ° C., then 90 g of isophthalic acid and 50 g of Shin-Etsu Silicon A, W Diol X22-160AS are introduced, and the mixture is heated again gradually to about 220 ° C. for about 11:00. 510 g of pentaerythrityl benzoate / isophthalate / laurate / PDMS polycondensate are thus obtained in the form of a thick oil which solidifies at room temperature.

  The polycondensate has the following characteristics: - Acid number = 28.7 - Hydroxyl value = 85 - n11ooc = 2.1 Poises (ie 210 mPa. $) - ratio between the number of moles of aromatic monocarboxylic acid and the number of moles of nonaromatic monocarboxylic acid: 1.49.

  500 g of polycondensate obtained above are taken off, heated to 70 ° C. and 215 g of ethyl acetate are slowly stirred in and then clarified by hot filtration on sintered n 2. After cooling to room temperature 705 g of 70% polycondensate solution in ethyl acetate in the form of a pale yellow viscous liquid having a viscosity at 25 ° C of about 165 centipoise (mPa ·%).

  Example 7 Synthesis of pentaerythritol benzoate / isophthalate / laurate

  In a reactor equipped with mechanical stirring, an inlet of argon and a distillation system, 165 g of benzoic acid, 160 g of lauric acid and 120 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 held 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 15 hours. It is cooled to a temperature of between 100 and 130 ° C., then 100 g of isophthalic acid are introduced and the mixture is heated again gradually to 220 ° C. for about 12 hours. There is thus obtained 510 g of pentaerythrityl benzoate / isophthalate / laurate polycondensate in the form of a thick oil which solidifies at room temperature.

  The polycondensate has the following characteristics: - Acid number = 20.4 - Hydroxyl value = 66 - n11o c = 4.7 Poises (ie 470 mPa. $) - ratio between the number of moles of aromatic monocarboxylic acid and the number of moles of nonaromatic monocarboxylic acid: 1.69.

  500 g of polycondensate obtained above are taken off, the mixture is heated to 70 ° C. and 215 g of ethyl acetate is slowly stirred in and then clarified by hot filtration on sintered n 2. After cooling to room temperature 700 is obtained. g of 70% polycondensate solution in ethyl acetate in the form of a pale yellow viscous liquid having a viscosity at 25 ° C of about 310 centipoise (mPa ·%).

  Example 8 Synthesis of pentaerythrityl benzoate / phthalate / laurate

  In a reactor equipped with a mechanical stirrer, an inlet of argon and a distillation system, 185 g of benzoic acid, 174 g of lauric acid and 114.6 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 held 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 18 hours. It is cooled to a temperature of between 100 and 130 ° C., then 80 g of phthalic anhydride are introduced and the mixture is heated again gradually to 220 ° C. for about 8 hours. 15 g of pentaerythritol are added and the mixture is kept at 220 ° C. for 8 hours. 512 g of pentaerythrityl benzoate / phthalate / laurate polycondensate are thus obtained in the form of a thick oil which solidifies at room temperature.

  The polycondensate has the following characteristics: - Acid number = 13.0 - Hydroxyl value = 60 - n11ooc = 0.9 Poises (ie 90 mPa. $) - ratio between the number of moles of aromatic monocarboxylic acid and the number of moles of nonaromatic monocarboxylic acid: 1.74.

  Example 9: Lip Makeup Product First Composition: Phase Ingredient% A NYLON-611 / DIMETHICONE COPOLYMER 9.7 DC 2-8179 Dow Corning BUTYL ACRYLATE COPOLYMER CONTAINING SILENT DENDRITIC SIDE CHAINS: 5 [TRI TRI MI LOXY) SO LOXYETHYL DIM ETHYLS I LOXY] SILYLPROPYL-METHACRYLATE CYCLOPENTASILOXANE DISTEARDIMONIUM HECTORITE (and) PROPYLENE 25 CARBONATE B ISODODECANE 36.63 TITANIUM DIOXIDE 2.74 RED 7 0.54 BLUE 1 LAKE 0.16 YELLOW 6 LAKE 2, 58 IRON OXIDES 0.25 C MICA (and) TITANIUM DIOXIDE (and) IRON OXIDES 2 D FRAGRANCE 0.4 Second composition: Name% by weight DITERTIOBUTYL 4-HYDROXYTOLUENE 0.05148 TRI-DECYL TRI-MELLITATE 11.34848 TETRA- ISO-STEARATE OF PENTAERYTHRITYLE 14,96352 DI-ISO-STEARYLE MALATE 10,67352 ESTERS OF VEGETABLE FATTY ACIDS, ISO-19,66536 STEARIC, ADIPIC GLYCERYLE TITANIUM OXIDE RUTILE TREATED ALUMINA / SILICA / TRI-0,15 METHYOLPROPANE (Cl: 77891) CALCIUM SALT OF RED LITHOL B 0.23 BLACK IRON OXIDE (Cl : 77499) 0.04 OXIDES OF IRON BROWN, YELLOW (75/25) (CI: 77491 + 77492) 0.26 MIXTURE OF P-HYDROXYBENZOATES OF ISO- 0.49764 PROPYL, ISO-BUTYL, N-BUTYL (40 / 30/30) POLYESTER of Example 1 20,82 POLYBUTENE (MONOOLEFINS / ISOPARAFFINS) (PM: 15,920) PERFUME 0.3 HYDROPHOBIC PYROGENATED SILICA, TREATED IN 6 SURFACE BY DI-METHYLSILANE Total: 100

Claims (23)

  1. Cosmetic product comprising first and second compositions, packaged separately, the first composition containing at least one silicone compound, and the second composition distinct from the first comprising a polyester obtainable by reaction of: at least one polyol comprising 3 to 6 hydroxyl groups; at least one nonaromatic monocarboxylic acid; at least one aromatic monocarboxylic acid, and at least one polycarboxylic acid comprising at least 2 carboxylic groups COOH and / or a cyclic anhydride of such a polycarboxylic acid.   2. Product according to claim 1, characterized in that the polyester is obtainable by reaction: - from 10 to 30% by weight, relative to the total weight of the polyester, of at least one polyol comprising 3 to 6 hydroxyl groups; from 30 to 80% by weight, relative to the total weight of the polyester, of at least one linear, branched and / or cyclic, saturated or unsaturated non-aromatic monocarboxylic acid comprising 6 to 32 carbon atoms; from 0.1 to 10% by weight, relative to the total weight of the polyester, of at least one aromatic monocarboxylic acid comprising 7 to 11 carbon atoms, optionally further substituted with 1 to 3 alkyl radicals, saturated or unsaturated, linear, branched and / or cyclic, which contain 1 to 32 carbon atoms; from 5 to 40% by weight, relative to the total weight of the polyester, of at least one polycarboxylic acid, saturated or unsaturated, or even aromatic, linear, branched and / or cyclic, comprising at least 2 carboxylic groups COOH, in particular 2 at 4 COOH groups; and / or a cyclic anhydride of such a polycarboxylic acid.   3. Product according to one of the preceding claims, wherein the polyol is a saturated hydrocarbon compound, linear or branched, comprising 3 to 18 carbon atoms, especially 3 to 12 or 4 to 10 carbon atoms, and 3 to 6 hydroxy (OH) groups.   4. Product according to one of the preceding claims, wherein the polyol is selected from glycerol, pentaerythritol, diglycerol, sorbitol and mixtures thereof; and even better is pentaerythritol.   5. Product according to one of the preceding claims, wherein the non-aromatic monocarboxylic acid is of formula RCOOH, wherein R is a saturated or unsaturated hydrocarbon radical, linear, branched and / or cyclic, comprising 5 to 31 carbon atoms. , in particular 7 to 27 carbon atoms, and still more preferably 9 to 23 carbon atoms, or even 11 to 19 carbon atoms.   6. Product according to one of the preceding claims, wherein the nonaromatic monocarboxylic acid is selected from 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 most preferably isostearic acid alone or stearic acid alone.   7. Product 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 polyester.   8. Product according to one of the preceding claims, wherein the aromaticmonocarboxylic acid is of formula R'COOH, wherein R 'is an aromatic hydrocarbon radical comprising 6 to 10 carbon atoms, and in particular the benzoic and naphthoic radicals. ; said radical R 'may also be substituted by 1 to 3 saturated or unsaturated, linear, branched and / or cyclic alkyl radicals comprising 1 to 32 carbon atoms, especially 2 to 12 or even 3 to 8 carbon atoms; and especially chosen from methyl, ethyl, propyl, isopropyl, butyl, isobutyl, terbutyl, pentyl, isopentyl, neopentyl, cyclopentyl, hexyl, cyclohexyl, heptyl, isoheptyl, octyl or isooctyl.   9. The product as claimed in one of the preceding claims, in which the aromatic monocarboxylic acid is chosen from benzoic acid, 4-tert-butylbenzoic acid, o-toluic acid, m-toluic acid, 1-naphthoic acid, alone or in mixtures; and even better, benzoic acid alone.   10. The product as claimed in one of the preceding claims, in which the aromatic monocarboxylic acid, or the mixture of said acids, represents 0.5 to 9.95% by weight, better still 1 to 9.5% by weight, or even 1 5 to 8% by weight of the total weight of the final polyester.   11. Product according to one of the preceding claims, wherein the polycarboxylic acid is selected from linear, branched and / or cyclic polycarboxylic acids, saturated or unsaturated, or even aromatic, comprising 2 to 50, in particular 2 to 40, atoms of carbon, in particular 3 to 36, or even 3 to 18, and even more preferably 4 to 12 carbon atoms, or even 4 to 10 carbon atoms; said acid comprising at least two carboxylic groups COOH, preferably from 2 to 4 COOH groups.   The product of claim 18, wherein said polycarboxylic acid is aromatic and comprises 8 to 12 carbon atoms.   13. The product according to one of the preceding claims, wherein the polycarboxylic acid or its anhydride is chosen from adipic acid, phthalic anhydride and / or isophthalic acid, and better isophthalic acid alone.   14. Product according to one of the preceding claims, wherein the polycarboxylic acid and / or its cyclic anhydride represents 10 to 30% by weight, and more preferably 14 to 25% by weight, of the total weight of the polyester.   15. The product as claimed in one of the preceding claims, in which the non-aromatic monocarboxylic acid does not comprise a free OH group.   16. Product according to one of the preceding claims, wherein the polyester is present in an amount of between 1 and 50% by weight, especially between 10 and 45% by weight, or between 20 and 40% by weight, and better between 25 and 35% by weight, relative to the weight of the first composition.   17. Product according to one of the preceding claims, wherein the silicone compound represents 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 second. composition.   18. Cosmetic product according to one of the preceding claims, characterized in that the first composition comprises at least one fluid silicone compound.   19. Cosmetic product according to one of the preceding claims, characterized in that the first composition comprises at least one polyamide polymer or copolymer.   20. Cosmetic product according to any one of the preceding claims, characterized in that the first composition comprises at least one coloring agent.   21. Cosmetic product according to any one of the preceding claims, characterized in that at least one of the first and second compositions is in the form of paste or stick.   22. Cosmetic product according to any one of the preceding claims, characterized in that the second composition comprises at least one fatty substance chosen from waxes.   23. Cosmetic product according to one of the preceding claims, characterized in that the second composition contains less than 5% of pigments, preferably less than 2%, more preferably less than 1%. 15