EP4518833A1 - Polyester, viscous mixture, process for preparing same and cosmetic composition - Google Patents

Abstract

The invention relates to a mixture comprising: a) at least one polyester resulting from a reaction between at least one dicarboxylic acid dimer and at least one alcohol bearing at least two hydroxyl functions, the at least one polyester having a viscosity of at least 200 000 cSt at 40°C and a hydroxyl number of less than 30 mg KOH/g, b) at least one biobased hydrocarbon compound. The invention also relates to the process for obtaining the polyester and to the polyester. The invention also relates to a cosmetic composition comprising a mixture according to the invention and at least one compound chosen from non-volatile oils, volatile oils, glossy oils, pasty fatty substances, gelling agents, film-forming polymers, waxes, antioxidants, pigments, dyes, surfactants and an aqueous phase, and mixtures thereof.

Description

POLYESTER, VISCOUS MIXTURE, PREPARATION PROCESS AND COSMETIC COMPOSITION

The present application relates to a viscous mixture comprising at least one polyester and at least one biosourced hydrocarbon compound.

[0002] The present application also relates to a process for preparing such a mixture.

[0003] It also concerns polyester and its preparation process.

[0004] Furthermore, the invention relates to the polyester compound and the cosmetic composition comprising the mixture according to the invention.

[0005] As part of this request, a certain number of definitions must be given.

“Alkane” is a saturated hydrocarbon consisting solely of carbon and hydrogen atoms linked together by simple covalent bonds whose general formula is C _n H2n+2.

“Linear alkane” is an alkane in which each carbon atom is linked to a maximum of two carbon atoms.

“Branched alkane” is an alkane in which certain carbon atoms are linked to three or even four carbon atoms.

“C _x alkane” is an alkane made up of x carbon atoms, said alkane being able to be linear or branched. For example, dodecane is a C12 alkane.

[00010] “C>x alkane” means an alkane consisting of at least x+1 carbon atoms, said alkane being able to be linear or branched. For example, dodecane is a linear C>10 alkane or C12 alkane.

[00011] “C>x alkane” is an alkane consisting of at least x carbon atoms, said alkane being able to be linear or branched, for example 2,3,6-trimethylheptane (CAS 4032-93-3) is a C>10 alkane.

[00012] “C _x -C _y alkane” is called an alkane consisting of x to y carbon atoms, the said alkane being able to be linear or branched. For example, the Ci-C2 alkanes are methane and ethane.

“Isoalkane” means a branched alkane comprising at least one carbon atom linked to at least three carbon atoms including a methyl group.

[00014] “Polyester” means a polymer whose main chain consists of an alternating sequence of units derived from at least one dicarboxylic acid and units derived from at least one alcohol comprising at least two hydroxyl functions, these units being linked. between them by ester functions. [00015] The term “hydrocarbon compound” means a compound consisting essentially of carbon and hydrogen atoms.

[00016] The quantity of free hydroxyl measured according to the NF ISO 4629 4629-2 method is called “hydroxyl index”. The hydroxyl number is expressed in mg KOH/g.

[00017] For the purposes of the present invention, “viscosity” is the kinematic viscosity which is the quotient of the dynamic viscosity by the density or density of the fluid. Kinematic viscosity is commonly expressed in centistokes (cSt) or mm ² . s ^-1 .

[00018] We call “mass percentage” the ratio of the mass of a first compound relative to the total mass of a mixture of compounds or composition, reduced to a percentage. For example, if 10 grams of a compound y are present in a mixture z having a total mass of 100 grams, then the mass percentage of y in z is 10%.

[00019] The polyesters according to the invention are characterized by their molecular mass, this is measured by the so-called Size Exclusion Chromatography (SEC) method and is expressed in g/mol.

The polyesters according to the invention are characterized by their colorimetry, this is determined by the APHA-HAZEN method according to the ASTM D 1209 standard and it is expressed in APHA.

[00021] We qualify as “biosourced” a compound or an organic composition whose organic carbon present in the compound or composition is 100% of plant origin ( ¹⁴ C) by a radiocarbon analysis according to one of the following standards ASTM D6866, EN 16640 or EN 16785-1.

[00022] The percentage of organic carbon of plant origin ( ¹⁴ C) determined by a radiocarbon analysis according to one of the following standards ASTM D6866, EN 16640 or EN 16785- is called the “naturalness index” of an organic composition. 1.

[00023] In cosmetic or dermatological products, fine control of the structuring of the product or its viscosity is necessary in relation to the intended application and represents one of the critical elements regarding the appreciation of the product by the user. For example, a lipstick, foundation or eye shadow should not flow once applied to the skin, whereas a hair product such as a gel or serum, for example, should be able to be easily spread by the user. on the hair.

[00024] The ingredients making it possible to adjust the structural, thickening and gelling characteristics of a cosmetic product include waxes, mineral fillers based on silica in particular, hydrophobized clays such as bentonites, metallic salts of fatty acids, fatty acid esters and derivatives sugars or oligosaccharides functionalized with fatty acids such as dextran palmitate or sucrose esters.

[00025] The available structuring agents have disadvantages. Waxes, for example, can leave the skin feeling too greasy and lead to a matte appearance and loss of shine.

[00026] Structuring products must therefore allow fine adjustment of the consistency of the product without negatively impacting the sensation to the touch, the durability of the product, the coloring and the shine in particular. There is therefore a need to offer structuring products that are “spectators” with respect to the other characteristics of the product or even better which allow them to be improved. Such products are of great interest because they can reduce the number of ingredients used in a cosmetic composition.

[00027] Polyesters resulting from the condensation of fatty carboxylic acids of natural origin and polyols have been considered in recent years as being able to adjust the consistency of cosmetic products while making it possible to preserve or even improve properties. like shine.

[00028] The company NIPPON FINE CHEMICAL offers ester oligomers derived from dilinoleic acid dimers and particular dilinoleic diol dimers under the trade name LUSPLAN DD-DA5® and LUSPLAN DD-DA7®. These oligoesters obtained by polycondensation in a heptane solvent have a yellowish color and cannot replace a thickening or gelling agent due to their low viscosity. In addition, the hydroxyl index of the commercial product LUSPLAN DD-DA7® is between 50 and 55 mg KOH/g, it is therefore higher than the hydroxyl indexes of the polyesters according to the invention.

[00029] The company L'OREAL has filed two patent applications, WO2013191302 and WO2018119762, in which cosmetic compositions containing polyesters, having high hydroxyl indices, of the PLANDOOL G type are disclosed. These polyesters are obtained by the condensation of dimers acid and alcohol dimers, in the presence of monoalcohols such as behenyl alcohol and/or phytosterol derivatives. The presence of these reagents makes it possible to convert some of the free hydroxyl groups resulting from the condensation reaction.

[00030] The same type of oligomers is disclosed in patent JP2018123117, in the name of the company NIPPON FINE CHEMICAL. These polyesters are obtained by the condensation between an acid dimer and a diol dimer at heat and at atmospheric pressure. The products thus obtained are subsequently diluted to 50 w/w% in a mixture of liquid paraffin and ethylhexyl palmitate, in a 1:1 proportion. On the other hand, the experimental conditions used in this patent application do not allow 'obtain final polyesters comparable to those of the present invention because their polymerization rate will be lower and therefore their hydroxyl index will be higher due to a greater number of functional groups having not reacted, and therefore left free.

[00031] Polyesters derived in particular from fatty acids have also been proposed by the company CRODA in patent applications EP1962790A1 and EP2004137A1. These polyesters are obtained by condensation of 3 reagents: a dicarboxylic acid, a polyol carrying 3 to 8 hydroxyl functions and a C16-C30 monocarboxylic fatty acid. [00032] The Applicant has also proposed polyesters obtained by condensation between dilinoleic acid and 1,4-butanediol, polyesters available under the trade name Viscoplast 14436H. These low viscosity liquid polyesters were notably combined with a fatty phase in patent application FR2931670A1 from the company L'OREAL.

[00033] The company NITTO DENKO CORPORATION in application EP2853573 presents the manufacture of polyesters used, after crosslinking with isocyanates, in adhesive compositions to be applied to the skin. These polyesters are obtained by condensation between an acid dimer and an alcohol dimer. These condensations are carried out either at very low pressure and without elimination of water, and preferably in two stages, or at atmospheric pressure but with distillation of the water generated during the reaction. The first stage is carried out at a temperature between 170 and 190 °C under a vacuum between 7 and 13 mbar and the second stage at an even lower pressure, between 2 and 8 mbar, and at a temperature between 215 and 13 mbar. 235°C. Unlike the polyesters according to the invention, it is necessary for these to have free hydroxyl functions to enable them to be crosslinked with isocyanate type derivatives.

[00034] Due to their biodegradable nature and potential structuring agents, polyesters obtained by condensation of fatty acids and fatty alcohols are of certain interest for the preparation of cosmetic compositions.

[00035] Their use has until now been limited due to their low viscosity, hence the use of additional thickening or lipophilic gelling agents, in particular non-biodegradable synthetic polymers such as polyorganosiloxanes or copolymers of the polystyrene/type. copoly(ethylene-propylene) or polystyrene/copoly(ethylene-butylene).

[00036] The multiplication of ingredients complicates the work of the formulator and requires an extremely precise dosage of the latter to obtain properties of interest to the user and also to ensure the stability of these properties over time. [00037] Surprisingly, it was demonstrated that polyesters of high viscosity and having a low hydroxyl index could be obtained by a condensation reaction in the presence of at least one biosourced hydrocarbon compound. [00038] The mixture according to the invention comprising at least one polyester and at least one biosourced hydrocarbon compound has a viscosity such that it makes it possible to limit or even eliminate the use of thickening or gelling agents in compositions. cosmetics.

[00039] Furthermore, the process for preparing the mixture according to the invention allows the preparation of cosmetic compositions which can have a naturalness index greater than or equal to 90%, more advantageously greater than or equal to 95%.

[00040] The invention relates to a mixture comprising: a) at least one polyester resulting from a reaction between at least one dicarboxylic acid dimer and at least one alcohol carrying at least two hydroxyl functions, the at least one polyester having a viscosity of at least 200,000 cSt at 40°C and a hydroxyl number of less than 30 mg KOH/g. b) at least one biosourced hydrocarbon compound.

[00041] In one embodiment, the polyester has a viscosity of at least 500,000 cSt at 40°C and a hydroxyl number of less than 30 mg KOH/g.

[00042] In one embodiment, the polyester has a viscosity of at least 1,000,000 cSt at 40°C and a hydroxyl number of less than 30 mg KOH/g.

[00043] In one embodiment, the polyester has a viscosity of at least 200,000 cSt at 40°C and a hydroxyl number of less than 15 mg KOH/g.

[00044] In one embodiment, the polyester has a viscosity of at least 500,000 cSt at 40°C and a hydroxyl number of less than 15 mg KOH/g.

[00045] In one embodiment, the polyester has a viscosity of at least 1,000,000 cSt at 40°C and a hydroxyl number of less than 15 mg KOH/g.

[00046] The invention also relates to a polyester resulting from a reaction between at least one dicarboxylic acid dimer and at least one alcohol carrying at least two hydroxyl functions, the at least one polyester having a viscosity of at least 200,000 cSt at 40°C and a hydroxyl number less than 30 mg KOH/g.

[00047] In one embodiment, the polyester has a viscosity of at least 500,000 cSt at 40°C and a hydroxyl number of less than 30 mg KOH/g.

[00048] In one embodiment, the polyester has a viscosity of at least 1,000,000 cSt at 40°C and a hydroxyl number of less than 30 mg KOH/g.

[00049] In one embodiment, the polyester has a viscosity of at least 200,000 cSt at 40°C and a hydroxyl number of less than 15 mg KOH/g. [00050] In one embodiment, the polyester has a viscosity of at least 500,000 cSt at 40°C and a hydroxyl number of less than 15 mg KOH/g.

[00051] In one embodiment, the polyester has a viscosity of at least 1,000,000 cSt at 40°C and a hydroxyl number of less than 15 mg KOH/g.

[00052] In the context of the present invention, the polyester according to the invention is not liquid: it cannot flow under its own weight at 25°C.

[00053] The polyester according to the invention has a viscosity of at least 1,000,000 cSt at 40°C and a hydroxyl number of less than 15 mg KOH/g.

[00054] In one embodiment, the polyester according to the invention has a viscosity of at least 1,000,000 cSt at 40°C and a hydroxyl number of less than 10 mg KOH/g.

[00055] In one embodiment, the polyester according to the invention has a viscosity of at least 1,000,000 cSt at 40°C and a hydroxyl number of less than 5 mg KOH/g.

[00056] In one embodiment, the polyester according to the invention has a viscosity greater than or equal to 2,000,000 cSt at 40°C and a hydroxyl number less than 15 mg KOH/g.

[00057] In one embodiment, the polyester according to the invention has a viscosity greater than or equal to 2,000,000 cSt at 40°C and a hydroxyl number less than 10 mg KOH/g.

[00058] In one embodiment, the polyester according to the invention has a viscosity greater than or equal to 2,000,000 cSt at 40°C and a hydroxyl number less than 5 mg KOH/g.

[00059] In one embodiment, the polyester according to the invention has a viscosity greater than or equal to 4,000,000 cSt at 40°C and a hydroxyl number less than 15 mg KOH/g.

[00060] In one embodiment, the polyester according to the invention has a viscosity greater than or equal to 4,000,000 cSt at 40°C and a hydroxyl number less than 10 mg KOH/g.

[00061] In one embodiment, the polyester according to the invention has a viscosity greater than or equal to 4,000,000 cSt at 40°C and a hydroxyl number less than 5 mg KOH/g.

[00062] In one embodiment, the polyester according to the invention has an average molecular mass greater than or equal to 100,000 g/mol.

[00063] In one embodiment, the polyester according to the invention has an average molecular mass greater than or equal to 105,000 g/mol.

[00064] In one embodiment, the polyester according to the invention has an average molecular mass greater than or equal to 110,000 g/mol. [00065] In one embodiment, the polyester according to the invention has an average molecular mass greater than or equal to 115,000 g/mol.

[00066] In one embodiment, the polyester according to the invention has an average molecular mass greater than or equal to 120,000 g/mol.

[00067] In one embodiment, the polyester according to the invention has an average molecular mass in a range of 100,000 to 200,000 g/mol.

[00068] In one embodiment, the polyester according to the invention has an average molecular mass in a range of 100,000 to 200,000 g/mol.

[00069] In one embodiment, the polyester according to the invention has an average molecular mass in a range of 100,000 to 200,000 g/mol.

[00070] In one embodiment, the polyester according to the invention has a coloring less than or equal to 200 on the APHA scale.

[00071] In one embodiment, the polyester according to the invention has a coloring less than or equal to 175 on the APHA scale.

[00072] In one embodiment, the polyester according to the invention has a coloring less than or equal to 150 on the APHA scale.

[00073] In one embodiment, the polyester according to the invention has a coloring less than or equal to 125 on the APHA scale.

[00074] In one embodiment, the polyester according to the invention has a coloring less than or equal to 100 on the APHA scale.

[00075] In one embodiment, the polyester according to the invention has a coloring less than or equal to 75 on the APHA scale.

[00076] In a preferred embodiment, the polyester according to the present invention has a coloring less than or equal to 50 on the APHA scale.

The polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and at least one alcohol carrying at least two hydroxyl functions.

[00078] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and at least one alcohol carrying at least two hydroxyl functions, and in the absence of at least one monoalcohol.

[00079] In a preferred embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and at least one alcohol carrying at least two hydroxyl functions, and in the absence of behenyl alcohol and/or phytosterol.

[00080] For the purposes of the present invention, the term “reaction” means a condensation reaction. [00081] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer of plant origin and at least one alcohol carrying at least two hydroxyl functions of plant origin.

[00082] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer of plant origin and an alcohol carrying two hydroxyl functions of plant origin.

[00083] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer of plant origin and two alcohols carrying two hydroxyl functions of plant origin.

[00084] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and at least one alcohol carrying two hydroxyl functions.

[00085] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and an alcohol carrying at least two hydroxyl functions.

[00086] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and an alcohol carrying two hydroxyl functions.

[00087] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and at least one alcohol carrying 3 to 8 hydroxyl functions.

[00088] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and an alcohol carrying 3 to 8 hydroxyl functions.

[00089] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and at least two alcohols carrying at least two hydroxyl functions.

[00090] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and at least two alcohols carrying two hydroxyl functions.

[00091] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and two alcohols carrying at least two hydroxyl functions.

[00092] In one embodiment, the polyester according to the invention comes from a reaction between at least one dicarboxylic acid dimer and two alcohols carrying two hydroxyl functions. [00093] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer and at least one alcohol carrying two hydroxyl functions.

[00094] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer and an alcohol carrying at least two hydroxyl functions.

[00095] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer and an alcohol carrying two hydroxyl functions.

[00096] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer and at least one alcohol carrying 3 to 8 hydroxyl functions.

[00097] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer and an alcohol carrying 3 to 8 hydroxyl functions.

[00098] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer and at least two alcohols carrying at least two hydroxyl functions.

[00099] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer and at least two alcohols carrying two hydroxyl functions.

[000100] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer and two alcohols carrying at least two hydroxyl functions.

[000101] In one embodiment, the polyester according to the invention comes from a reaction between a dicarboxylic acid dimer and two alcohols carrying two hydroxyl functions.

[000102] By dicarboxylic acid dimer is meant a compound obtained by a process comprising a dimerization reaction of a compound carrying a carboxylic acid function.

[000103] Thus, the at least one C _n dicarboxylic acid dimer is obtained by a process comprising a step of dimerization of a C m compound with n = 2 x m.

[000104] The at least one dicarboxylic acid dimer is a linear or branched C8-C44 hydrocarbon compound, saturated or unsaturated, which may comprise one or more cycles and carry 2 carboxylic acid functions.

[000105] In one embodiment, the dicarboxylic acid dimer is chosen from dicarboxylic acid dimers of plant origin. [000106] In one embodiment, the dicarboxylic acid dimer is chosen from unsaturated dicarboxylic acid dimers.

[000107] In a preferred embodiment, the dicarboxylic acid dimer is chosen from saturated dicarboxylic acid dimers.

[000108] In one embodiment, the dicarboxylic acid dimer is a C28-C44 compound.

[000109] In one embodiment, the dicarboxylic acid dimer is a C36 compound.

[000110] In one embodiment, the dicarboxylic acid dimer is a C36 compound derived from oleic acid, linoleic acid and/or linolenic acid. [000111] In one embodiment, the dicarboxylic acid dimer is a C36 unsaturated compound derived from oleic acid, linoleic acid and/or linolenic acid.

[000112] In one embodiment, the dicarboxylic acid dimer is a saturated C36 compound derived from oleic acid, linoleic acid and/or linolenic acid.

[000113] In one embodiment, the dicarboxylic acid dimer is a C36 compound chosen from the group consisting of products marketed under the brands Empol 1008, Pripol 1013, Pripol 1009, Jaric D60, Jaric D70, Jaric D75, Jaric D76 , Radiacid 0960, Radiacid 0975, Radiacid 0976, Radiacid 0977 and Radiacid 0978.

[000114] In one embodiment, the C36 dicarboxylic acid dimer is the compound with CAS number 68783-41-5.

[000115] In one embodiment, the C36 dicarboxylic acid dimer is the product marketed under the brand Pripol 1009.

[000116] It is well known that commercial C36 dicarboxylic acid dimer products can also include Cis (“monomer”) and C36 (“trimer”) in small quantities.

[000117] In one embodiment, the dicarboxylic acid dimer is a C44 compound.

[000118] In one embodiment, the dicarboxylic acid dimer is a C44 unsaturated compound derived from euricic acid.

[000119] In one embodiment, the dicarboxylic acid dimer is a saturated C44 compound derived from euricic acid.

[000120] In one embodiment, the dicarboxylic acid dimer is a C44 compound chosen from the group consisting of products marketed under the brands Pripol 1004 and Radiacid 0994. [000121] It is well known that commercial C44 dicarboxylic acid dimer products can also include C22 (“monomer”) and (“trimer”) in small quantities.

[000122] The at least one alcohol used in the reaction making it possible to obtain the polyester according to the invention is a C2-C44 hydrocarbon compound, linear or branched, saturated or unsaturated, which may comprise one or more cycles and bearing at least 2 hydroxyl functions.

[000123] In one embodiment, the at least one alcohol is a saturated linear alcohol.

[000124] In one embodiment, the at least one alcohol is an unsaturated linear alcohol.

[000125] In one embodiment, the at least one alcohol is a saturated branched alcohol.

[000126] In one embodiment, the at least one alcohol is an unsaturated branched alcohol.

[000127] In one embodiment, the at least one alcohol is an alcohol of plant origin.

[000128] In one embodiment, the at least one alcohol is an alcohol carrying two hydroxyl functions.

[000129] In one embodiment, the at least one alcohol is an alcohol bearing two hydroxyl functions chosen from the group consisting of 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol and (9Z,12Z)-18-[(6Z,9Z)-18-hydroxyoctadeca-6,9-dienoxy]octadeca-9, 12-dien-l-ol (CAS 147853-32-5), alone or in mixture.

[000130] In one embodiment, the at least one alcohol is an alcohol bearing two hydroxyl functions chosen from the group consisting of 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol and (9Z,12Z)-18-[(6Z,9Z)-18-hydroxyoctadeca-6,9-dienoxy]octadeca-9,12-dien-l-ol (CAS 147853-32-5).

[000131] In one embodiment, the at least one alcohol is 1,3-propanediol.

[000132] In one embodiment, the at least one alcohol is 1,4-butanediol.

[000133] In one embodiment, the at least one alcohol is 1,5-pentanediol.

[000134] In one embodiment, the at least one alcohol is (9Z,12Z)-18-

[(6Z,9Z)-18-hydroxyoctadeca-6,9-dienoxy]octadeca-9,12-dien-l-ol (CAS 147853-32-5).

[000135] In one embodiment, the at least one alcohol carrying two hydroxyl functions is the commercial product of the Pripol 2033 brand.

[000136] In one embodiment, the at least one alcohol is a mixture of at least two alcohols. [000137] In one embodiment, the at least one alcohol is a mixture of at least two alcohols chosen from the group consisting of 1,3-propanediol, 1,2-butanediol, 1,3-butanediol , 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol and (9Z,12Z)-18-[(6Z,9Z)-18-hydroxyoctadeca-6,9-dienoxy]octadeca- 9,12-dien-l-ol (CAS 147853-32-5).

[000138] In one embodiment, the at least one alcohol is a mixture of two alcohols.

[000139] In one embodiment, the at least one alcohol is a mixture of two linear alcohols.

[000140] In one embodiment, the at least one alcohol is a mixture of a linear alcohol and a branched alcohol.

[000141] In one embodiment, the at least one alcohol is a mixture of two branched alcohols.

[000142] In one embodiment, the at least one alcohol is a mixture of two saturated alcohols.

[000143] In one embodiment, the at least one alcohol is a mixture of a saturated alcohol and a saturated alcohol.

[000144] In one embodiment, the at least one alcohol is a mixture of two saturated alcohols.

[000145] In one embodiment, the at least one alcohol is a mixture of two alcohols chosen from the group consisting of 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1 ,4-butanediol, 1,5-pentanediol, 1,6-hexanediol and (9Z,12Z)-18-[(6Z,9Z)-18-hydroxyoctadeca-6,9-dienoxy]octadeca-9,12 -dien-l-ol (CAS 147853-32-5).

[000146] In one embodiment, the at least one alcohol is a mixture of 1,4-butanediol and (9Z,12Z)-18-[(6Z,9Z)-18-hydroxyoctadeca-6,9-dienoxy ]octadeca-9,12-dien-l-ol (CAS 147853-32-5).

[000147] In one embodiment, the at least one alcohol is chosen from the group consisting of alcohols carrying 3 to 8 hydroxyl functions.

[000148] In one embodiment, the at least one alcohol is an alcohol carrying 3 to 8 hydroxyl functions chosen from the group consisting of glycerol, threitol, erythritol, inositol, arabitol, xylitol and sorbitol.

[000149] In one embodiment, the at least one alcohol is a mixture of alcohols carrying 3 to 8 hydroxyl functions.

[000150] In one embodiment, the at least one alcohol is a mixture of sorbitol and glycerol.

[000151] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic and/or linolenic acid and at least one alcohol carrying two hydroxyl functions.

[000152] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and an alcohol carrying at least two hydroxyl functions.

[000153] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and an alcohol carrying two hydroxyl functions.

[000154] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and ( 9Z,12Z)-18-[(6Z,9Z)-18-hydroxyoctadeca-6,9-dienoxy]octadeca-9,12-dien-l-ol (CAS 147853-32-5).

[000155] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and 1 ,3-propanediol.

[000156] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and 1 ,4-propanediol.

[000157] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and 1 ,5-pentanediol.

[000158] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and at least an alcohol carrying 3 to 8 hydroxyl functions.

[000159] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and an alcohol carrying 3 to 8 hydroxyl functions.

[000160] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and at least two alcohols carrying at least two hydroxyl functions.

[000161] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and at least two alcohols carrying two hydroxyl functions. [000162] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and two alcohols carrying at least two hydroxyl functions.

[000163] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and two alcohols carrying two hydroxyl functions. [000164] In one embodiment, the polyester according to the invention comes from a reaction between a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid and 1 ,4-butanediol and (9Z,12Z)-18-[(6Z,9Z)-18-hydroxyoctadeca-6,9-dienoxy]octadeca-9,12-dien-l-ol (CAS 147853-32-5) .

[000165] The term “biosourced hydrocarbon compound” means a compound formed essentially, or even made up, of carbon and hydrogen atoms, and optionally of oxygen and nitrogen atoms, characterized in that the organic carbon present in the compound is 100% of plant origin ( ¹⁴ C) by radiocarbon analysis according to one of the following standards ASTM D6866, EN 16640 or EN 16785-1.

[000166] In a preferred embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention consists only of carbon and hydrogen atoms.

[000167] The at least one biosourced hydrocarbon compound present in the mixture according to the invention contains at least 12 carbon atoms.

[000168] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention comprises at least 16 carbon atoms.

[000169] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention comprises at least 22 carbon atoms.

[000170] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention comprises at least 30 carbon atoms.

[000171] In one embodiment, the mixture according to the invention comprises a biosourced hydrocarbon compound.

[000172] In one embodiment, the mixture according to the invention comprises two biosourced hydrocarbon compounds.

[000173] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is chosen from the group consisting of linear or branched, saturated or unsaturated alkanes. [000174] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is chosen from the group consisting of saturated linear alkanes.

[000175] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is chosen from the group consisting of saturated branched alkanes.

[000176] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is chosen from the group consisting of unsaturated linear alkanes.

[000177] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is chosen from the group consisting of unsaturated branched alkanes.

[000178] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is a non-volatile compound.

[000179] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention has a flash point greater than 110°C measured according to the ATSM D93 standard.

[000180] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is chosen from the group consisting of squalane and squalene.

[000181] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is squalane.

[000182] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is squalene.

[000183] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is a mixture of alkanes.

[000184] In one embodiment, the at least one biosourced hydrocarbon compound present in the mixture according to the invention is a mixture of Ci6-Cis alkanes.

[000185] Advantageously, the at least one biosourced hydrocarbon compound present in the mixture according to the invention has a biodegradability of at least 60% according to the OECD 301F method.

[000186] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one polyester is at least 50% relative to the total mass of the mixture.

[000187] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one polyester is between 50 and 95% relative to the total mass of the mixture. [000188] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one polyester is between 50 and 70% relative to the total mass of the mixture.

[000189] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one polyester is between 60 and 80% relative to the total mass of the mixture.

[000190] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one polyester is between 70 and 90% relative to the total mass of the mixture.

[000191] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one polyester is between 75 and 95% relative to the total mass of the mixture.

[000192] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one biosourced hydrocarbon compound is at least 5% relative to the total mass of the mixture.

[000193] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one biosourced hydrocarbon compound is between 5 and 50% relative to the total mass of the mixture.

[000194] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one biosourced hydrocarbon compound is between 5 and 15% relative to the total mass of the mixture.

[000195] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one biosourced hydrocarbon compound is between 15 and 25% relative to the total mass of the mixture.

[000196] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one biosourced hydrocarbon compound is between 25 and 35% relative to the total mass of the mixture.

[000197] In one embodiment, the mixture according to the invention is characterized in that the mass percentage of the at least one biosourced hydrocarbon compound is between 35 and 50% relative to the total mass of the mixture.

[000198] In one embodiment, the mixture according to the invention is characterized in that it comprises at least 50% by mass of the at least one polyester and at least 10% by mass of the at least one compound biosourced hydrocarbon.

[000199] In one embodiment, the mixture according to the invention is characterized in that it comprises at least 50% by mass of the at least one polyester and at least 20% by mass of the at least one compound biosourced hydrocarbon. [000200] In one embodiment, the mixture according to the invention is characterized in that it comprises at least 50% by mass of the at least one polyester and at least 30% by mass of the at least one compound biosourced hydrocarbon.

[000201] In one embodiment, the mixture according to the invention is characterized in that it comprises at least 60% by mass of the at least one polyester and at least 10% by mass of the at least one compound biosourced hydrocarbon.

[000202] In one embodiment, the mixture according to the invention is characterized in that it comprises at least 70% by mass of the at least one polyester and at least 10% by mass of the at least one compound biosourced hydrocarbon.

[000203] In one embodiment, the mixture according to the invention is characterized in that it contains 50% by mass of at least one polyester and 50% by mass of at least one biosourced hydrocarbon compound.

[000204] In one embodiment, the mixture according to the invention is characterized in that it contains 60% by mass of at least one polyester and 40% by mass of at least one biosourced hydrocarbon compound.

[000205] In one embodiment, the mixture according to the invention is characterized in that it contains 70% by mass of at least one polyester and 30% by mass of at least one biosourced hydrocarbon compound.

[000206] In one embodiment, the mixture according to the invention is characterized in that it contains 80% by mass of at least one polyester and 20% by mass of at least one biosourced hydrocarbon compound.

[000207] The invention also relates to a process for obtaining the mixture according to the invention characterized in that it comprises the following steps: a) there is at least one carboxylic acid dimer, b) there is at least one alcohol carrying at least two hydroxyl functions, c) we have at least one biosourced hydrocarbon compound, d) we mix the compounds of steps a), b) and c), e) we lower the pressure of the mixture at a pressure between 900 and 10 mbar, f) the mixture is gradually heated to a target temperature between 150°C and 250°C, g) the water formed during the condensation reaction is continuously eliminated, h) a mixture is obtained comprising a polyester and the biosourced hydrocarbon compound, characterized in that the compounds of steps a), b) and c) can be mixed in any order during step d). [000208] The invention also relates to a process for obtaining the polyester according to the invention, characterized in that it comprises the following steps: a) there is at least one carboxylic acid dimer, b) there is at least one alcohol carrying at least two hydroxyl functions, c) the compounds of steps a), b) and c are mixed, d) the pressure of the mixture is lowered to a pressure of between 900 and 10 mbar, e) we gradually heats the mixture to a target temperature of between 150°C and 250°C, f) the water formed during the condensation reaction is continuously eliminated, g) a polyester is obtained, characterized in that the compounds of the steps a) and b) can be mixed in any order during step d).

[000209] In one embodiment, the process for obtaining the mixture according to the invention is characterized in that it does not use a monoalcohol.

[000210] In a preferred embodiment, the process for obtaining the mixture according to the invention characterized in that it does not use behenyl alcohol and/or phytosterol.

[000211] In one embodiment, at least one catalyst is added during step d) of the process for obtaining the mixture according to the invention.

[000212] In one embodiment, the at least one catalyst added during step d) is chosen from the group consisting of base type catalysts.

[000213] In one embodiment, the at least one catalyst added during step d) is a base type catalyst chosen from the group consisting of hydroxide or carbonate salts of alkali metals such as sodium hydroxide, potassium hydroxide and potassium carbonate.

[000214] In one embodiment, the at least one catalyst added during step d) is chosen from the group consisting of acid type catalysts.

[000215] In one embodiment, the at least one catalyst added during step d) is an acid type catalyst chosen from the group consisting of sulfonic acids such as paratoluenesulfonic acid, methanesulfonic acid and phosphoric or oxy-phosphoric acids such as phosphoric acid and phosphorous acid.

[000216] In a preferred embodiment, the at least one catalyst added during step d) is methanesulfonic acid.

[000217] In one embodiment, the at least one catalyst added during step d) is chosen from the group consisting of tin oxalate and titanium tetrabutanolate. [000218] In a preferred embodiment, the at least one catalyst added during step d) is tin oxalate.

[000219] In one embodiment, the mass of the at least one catalyst added during step d) is between 0.01 and 1% relative to the sum of the masses of the at least one acid dimer dicarboxylic acid and at least one alcohol.

[000220] In one embodiment, the mass of the at least one catalyst added during step d) is between 0.01 and 0.5% relative to the sum of the masses of the at least one dicarboxylic acid dimer and the at least one alcohol.

[000221] In one embodiment, the mass of the at least one catalyst added during step d) is between 0.01 and 0.2% relative to the sum of the masses of the at least one dicarboxylic acid dimer and the at least one alcohol.

[000222] In one embodiment, the mass of the at least one catalyst added during step d) is between 0.01 and 0.1% relative to the sum of the masses of the at least one dicarboxylic acid dimer and the at least one alcohol.

[000223] In one embodiment, the pressure is lowered to a pressure of between 10 mbar and 900 mbar during step e) of the process for obtaining the mixture according to the invention.

[000224] In one embodiment, the pressure is lowered to a pressure of between 10 mbar and 600 mbar during step e) of the process for obtaining the mixture according to the invention.

[000225] In one embodiment, the pressure is lowered to a pressure of between 10 mbar and 300 mbar during step e) of the process for obtaining the mixture according to the invention.

[000226] In one embodiment, the pressure is lowered to a pressure of 10 mbar during step e) of the process for obtaining the mixture according to the invention.

[000227] In one embodiment, the pressure is lowered to a pressure of 200 mbar during step e) of the process for obtaining the mixture according to the invention.

[000228] In one embodiment, the mixture is gradually heated to a target temperature during step f) of the process for obtaining the mixture according to the invention by following a temperature ramp.

[000229] In one embodiment, the mixture is gradually heated to a target temperature during step f) of the process for obtaining the mixture according to the invention by performing temperature stages.

[000230] In one embodiment, the mixture is gradually heated to a temperature between 150 and 170° C. during step f) of the process for obtaining the mixture. [000231] In one embodiment, the mixture is gradually heated to a temperature between 170 and 190°C during step f) of the process for obtaining the mixture according to the invention.

[000232] In one embodiment, the mixture is gradually heated to a temperature between 190 and 210°C during step f) of the process for obtaining the mixture according to the invention.

[000233] In one embodiment, the mixture is gradually heated to a temperature between 210 and 230°C during step f) of the process for obtaining the mixture according to the invention.

[000234] In one embodiment, the mixture is gradually heated to a temperature between 230 and 250°C during step f) of the process for obtaining the mixture according to the invention.

[000235] In one embodiment, the mixture is gradually heated to a temperature of 160° C. during step f) of the process for obtaining the mixture according to the invention.

[000236] In one embodiment, the mixture is gradually heated to a temperature of 170° C. during step f) of the process for obtaining the mixture according to the invention.

[000237] In one embodiment, the mixture is gradually heated to a temperature of 180° C. during step f) of the process for obtaining the mixture according to the invention.

[000238] In one embodiment, the mixture is gradually heated to a temperature of 190° C. during step f) of the process for obtaining the mixture according to the invention.

[000239] In one embodiment, the mixture is gradually heated to a temperature of 200° C. during step f) of the process for obtaining the mixture according to the invention.

[000240] In one embodiment, the mixture is gradually heated to a temperature of 210° C. during step f) of the process for obtaining the mixture according to the invention.

[000241] In one embodiment, the mixture is gradually heated to a temperature of 220° C. during step f) of the process for obtaining the mixture according to the invention.

[000242] In one embodiment, the mixture is gradually heated to a temperature of 230° C. during step f) of the process for obtaining the mixture according to the invention. [000243] In one embodiment, the excess of at least one alcohol carrying at least two hydroxyl functions is also eliminated during step g) of the process for obtaining the mixture according to the invention.

[000244] In one embodiment, the process for obtaining the mixture according to the invention is characterized in that the alcohol carrying at least two hydroxyl functions is a diol.

[000245] In one embodiment, the process for obtaining the mixture according to the invention is characterized in that it comprises the following steps: a) a dicarboxylic acid dimer is available, b) a dicarboxylic acid dimer is available, diol, c) we have a biosourced hydrocarbon compound, d) we mix the compounds of steps a), b) and c), e) we lower the pressure of the mixture to a pressure between 900 and 10 mbar f) we gradually heats the mixture to a target temperature of between 150 and 250°C, g) the water formed during the condensation reaction is continuously eliminated, h) a mixture is obtained comprising a polyester and the biosourced hydrocarbon compound, characterized in that the compounds of steps a), b) and c) can be mixed in any order during step d).

[000246] In one embodiment, the process for obtaining the mixture according to the invention is characterized in that it comprises the following steps: a) a dicarboxylic acid dimer is available, b) a dicarboxylic acid dimer is available, diol, c) we have a biosourced hydrocarbon compound, d) we mix the compounds of steps a), b) and c), e) we lower the pressure of the mixture to a pressure between 900 and 10 mbar, f) the mixture is gradually heated to a target temperature of between 150 and 250°C, g) the water formed during the condensation reaction is continuously eliminated, h) a mixture is obtained comprising a polyester and the biosourced hydrocarbon compound, characterized in that a catalyst is added during step d).

[000247] In one embodiment, the process for obtaining the mixture according to the invention is characterized in that it comprises the following steps: a) we have a saturated dicarboxylic acid dimer derived from oleic acid, linoleic acid and/or linolenic acid, b) we have (9Z,12Z)-18-[(6Z,9Z)- 18-hydroxyoctadeca-6,9-dienoxy]octadeca-9,12-dien-l-ol (CAS 147853-32-5), c) squalane is available, d) the compounds of steps a), b) are mixed and c), e) the pressure of the mixture is lowered to a pressure of 10 mbar, f) the mixture is gradually heated to a temperature of 220°C, g) the water formed during the condensation reaction is continuously removed , h) a mixture is obtained comprising a polyester and squalane.

[000248] In one embodiment, the process for obtaining the mixture according to the invention is characterized in that it comprises the following steps: a) a saturated dicarboxylic acid dimer derived from oleic acid is available, linoleic acid and/or linolenic acid b) we have (9Z,12Z)-18-[(6Z,9Z)-18-hydroxyoctadeca-6,9-dienoxy]octadeca-9,12-dien-l -ol (CAS 147853-32-5), c) squalene is available, d) the compounds of steps a), b) and c) are mixed, e) the pressure of the mixture is lowered to a pressure of 10 mbar, f) the mixture is gradually heated to a temperature of 160°C, g) the water formed during the condensation reaction is continuously removed, methanesulfonic acid being added during step d) and h) obtains a mixture comprising a polyester and squalene.

[000249] In one embodiment, the process for obtaining the mixture according to the invention is characterized in that it comprises the following steps: a) a saturated dicarboxylic acid dimer derived from oleic acid is available, linoleic acid and/or linolenic acid, b) we have (9Z,12Z)-18-[(6Z,9Z)-18-hydroxyoctadeca-6,9-dienoxy]octadeca- 9,12-dien- l-ol (CAS 147853-32-5), c) we have a mixture of Ci6-Cis alkanes, d) we mix the compounds of steps a), b) and c), e) we lower the pressure of the mixture at a pressure of 200 mbar, f) the mixture is gradually heated to a temperature of 170° C., g) the water formed during the condensation reaction is continuously eliminated, tin oxalate being added during step d) and h) we obtain a mixture comprising a polyester and C16-C18 alkanes. [000250] The invention also relates to a cosmetic composition comprising a mixture according to the invention and at least one compound chosen from non-volatile oils, volatile oils, glossy oils, pasty fatty substances, gelling agents, film-forming polymers, waxes, anti-oxidants, pigments, dyes, surfactants, an aqueous phase, and mixtures thereof.

[000251] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one non-volatile oil.

[000252] For the purposes of the present invention, the term “non-volatile oil” means an oil having a flash point greater than 110°C measured according to the ATSM D93 standard.

[000253] These oils can be of vegetable, mineral or synthetic origin.

[000254] These non-volatile oils can be hydrocarbon, silicone, fluorinated or fluorosilicone oils.

[000255] For the purposes of the present invention, the term hydrocarbon oil means an oil essentially consisting of carbon atoms, hydrogen and possibly oxygen and/or nitrogen atoms.

[000256] Among these hydrocarbon oils, mention may be made of linear or branched alkanes of mineral or synthetic origin such as linear or branched alkanes of 12 to 40 carbon atoms, (poly) esters and (poly) ethers, and in particular (poly) esters of C2-C24 acids (preferably C6-C20), triglycerides of C6-C20 fatty acids, vegetable oils, di-alkyl carbonates, branched and/or unsaturated fatty acids , branched and/or unsaturated fatty alcohols.

[000257] Concerning the non-volatile silicone oils, they are in particular chosen from the group comprising phenyl silicone oils, non-volatile polydimethylsiloxanes, or derivatives of non-volatile polydimethylsiloxanes and their mixtures.

[000258] In a particularly preferred embodiment, the cosmetic composition according to the invention is characterized in that the non-volatile oil is chosen from the group consisting of non-volatile linear or branched alkanes.

[000259] Preferably, the non-volatile oil is chosen from the group consisting of linear or branched alkanes of 12 to 40 carbon atoms.

[000260] Preferably, the non-volatile oils are of vegetable origin.

[000261] In a preferred embodiment, the cosmetic composition according to the invention is characterized in that the non-volatile oil is a vegetable hydrocarbon oil.

[000262] Vegetable hydrocarbon oils are chosen in particular from the group comprising wheat germ, sunflower, grape seed, sesame, coconut, apricot, castor, corn, avocado, soy, shea, olive, oil sweet almond, cotton, palm, macadamia, rapeseed, jojoba, hazelnut, poppy, alfalfa, pumpkin, blackcurrant, squash, evening primrose, barley, and their mixtures.

[000263] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the non-volatile oil is at least 5% relative to the total mass of the cosmetic composition.

[000264] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the non-volatile oil is at least 10% relative to the total mass of the cosmetic composition.

[000265] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the non-volatile oil is between 5% and 25% relative to the total mass of the cosmetic composition.

[000266] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the non-volatile oil is between 5% and 15% relative to the total mass of the cosmetic composition.

[000267] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the non-volatile oil is between 10% and 25% relative to the total mass of the cosmetic composition.

[000268] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one volatile oil.

[000269] For the purposes of the present invention, the term “volatile oil” means an oil having a flash point lower than 110°C measured according to the ATSM D93 standard.

[000270] These oils can be of vegetable, mineral or synthetic origin.

[000271] In a preferred embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one volatile oil of plant origin.

[000272] In one embodiment, the at least one volatile oil has a flash point below 95°C measured according to the ATSM D93 standard.

[000273] In one embodiment, the at least one volatile oil has a flash point below 55°C measured according to the ATSM D93 standard.

[000274] In one embodiment, the at least one volatile oil has a flash point of between 40 and 55°C measured according to the ATSM D93 standard.

[000275] In one embodiment, the at least one volatile oil has a flash point of between 30 and 40°C measured according to the ATSM D93 standard.

[000276] These volatile oils can be hydrocarbon, silicone, fluorinated or fluorosilicone oils. [000277] Among these hydrocarbon oils, mention may be made of linear or branched Cs-Ci6 alkanes, in particular Cs-Ci6 isoalkanes such as isodecane, isododecane and isohexadecane.

[000278] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one volatile oil chosen from the group consisting of C8-C12 branched alkanes.

[000279] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one volatile oil chosen from the group consisting of Cio-branched alkanes.

[000280] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one volatile oil chosen from the group consisting of trimethylheptanes.

[000281] For the purposes of the present invention, the term “trimethylheptanes” means all C? branched by three methyl groups.

[000282] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one volatile oil chosen from the group consisting of Cio-branched alkanes and alkanes linear in C> 10.

[000283] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one volatile oil chosen from the group consisting of trimethylheptanes and linear C alkanes. > 10.

[000284] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one volatile oil consisting of a mixture of at least one trimethylheptane and at least a linear alkane at C>10.

[000285] Among these hydrocarbon oils, we can also cite C8-C16 branched esters such as isohexyl neopentanoate.

[000286] Among these silicone oils, mention may be made of linear or cyclic silicone oils such as linear or cyclic polydimethylsiloxanes having from 3 to 7 silicon atoms.

[000287] Among these fluorinated oils, mention may be made of fluorinated oils such as perfluoropolyethers, perfluoroalkanes such as perfluorodecalin, perfluorodamantanes and fluoroester oils.

[000288] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the volatile oil is at least 5% relative to the total mass of the cosmetic composition. [000289] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the volatile oil is at least 10% relative to the total mass of the cosmetic composition.

[000290] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the volatile oil is at least 15% relative to the total mass of the cosmetic composition.

[000291] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the volatile oil is at least 20% relative to the total mass of the cosmetic composition.

[000292] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the volatile oil is at least 25% relative to the total mass of the cosmetic composition.

[000293] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the volatile oil is at least 50% relative to the total mass of the cosmetic composition.

[000294] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the volatile oil is between 25% and 80% relative to the total mass of the cosmetic composition.

[000295] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the volatile oil is between 40% and 80% relative to the total mass of the cosmetic composition.

[000296]

[000297] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the volatile oil is between 25% and 60% relative to the total mass of the cosmetic composition.

[000298] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the volatile oil is between 30% and 50% relative to the total mass of the cosmetic composition.

[000299] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the volatile oil is between 40% and 60% relative to the total mass of the cosmetic composition.

[000300] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the volatile oil is between 60% and 80% relative to the total mass of the cosmetic composition.

[000301] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one glossy oil. ZI

[000302] For the purposes of the present invention, the term “shiny oil” means an oil having intrinsic shine properties. “Shiny oils” are frequently used in cosmetics to guarantee a “shiny effect” when applying cosmetic compositions to keratin materials for example. [000303] In one embodiment, the cosmetic composition according to the invention is characterized by the shiny oil being a non-volatile oil.

[000304] In one embodiment, the cosmetic composition according to the invention is characterized in that the glossy oil is chosen from the group comprising:

- polymers such as: polybutylenes in particular POLYBUTENE® marketed or manufactured by the company ATAMAN, hydrogenated polyisobutylenes, polydecenes and hydrogenated polydecenes, polyfarnesenes, vinylpyrrolidone copolymers in particular the vinylpyrrolidone/eicosene copolymer, ANTARON V 220 ® marketed or manufactured by the company ISP.

- esters such as esters of linear fatty acids having a total carbon number greater than 30, aromatic esters, esters of fatty alcohol or branched fatty acids having 20 to 30 carbon atoms.

- ester copolymers such as: dilinoleyl dimers/dilinoleate dimers (LUSPLAN DD—DA5® and LUSPLAN DD-DA7®), dilinoleic acid/butanediol copolymer (VISCOPLAST 14436H®), dilinoleic acid/propanediol copolymer and their mixtures . [000305] Preferably, the cosmetic composition according to the invention is characterized in that the shiny oil is of plant origin.

[000306] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the glossy oil is at least 2% relative to the total mass of the cosmetic composition.

[000307] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the glossy oil is at least 5% relative to the total mass of the cosmetic composition.

[000308] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the glossy oil is between 2% and 20% relative to the total mass of the cosmetic composition.

[000309] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the glossy oil is between 5% and 15% relative to the total mass of the cosmetic composition.

[000310] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the glossy oil is between 10% and 20% relative to the total mass of the cosmetic composition. [000311] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the glossy oil is between 2% and 10% relative to the total mass of the cosmetic composition.

[000312] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the glossy oil is between 5% and 10% relative to the total mass of the cosmetic composition.

[000313] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one pasty fatty substance.

[000314] For the purposes of the present invention, the term “pasty fatty substance” means a lipophilic fatty compound with a reversible solid/liquid state change, presenting at room temperature (25°C) a liquid fraction and a solid fraction.

[000315] In other words, the melting temperature of the pasty fatty substance is less than or equal to 25°C.

[000316] In one embodiment, the cosmetic composition according to the invention is characterized in that the pasty fatty substance is chosen from the group comprising synthetic pasty fatty substances, animal pasty fatty substances, vegetable pasty fatty substances and their mixtures.

[000317] In one embodiment, the cosmetic composition according to the invention is characterized in that the pasty fatty substance is a synthetic pasty fatty substance chosen from the group comprising: polyol ethers, petroleum jelly, vinyl polymers, pentaerythritol esters, polyesters and mixtures thereof.

[000318] In one embodiment, the cosmetic composition according to the invention is characterized in that the pasty animal fatty substance is lanolin.

[000319] Preferably, the cosmetic composition according to the invention is characterized in that the pasty fatty substance is a vegetable pasty fatty substance.

[000320] In one embodiment, the cosmetic composition according to the invention is characterized in that the vegetable pasty fatty substance is chosen from the group comprising: vegetable butters (avocado butter, shea butter), triglycerides of fatty acids and their derivatives, and their mixtures.

[000321] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pasty fatty substance is between 0% and 20% relative to the total mass of the cosmetic composition.

[000322] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pasty fatty substance is between 0% and 15% relative to the total mass of the cosmetic composition. [000323] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the pasty fatty substance is between 0% and 10% relative to the total mass of the cosmetic composition.

[000324] In one embodiment, the cosmetic composition according to the invention is characterized in that the percentage by weight of the pasty fatty substance is between 0% and 5% relative to the total mass of the cosmetic composition.

[000325] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one gelling agent.

[000326] For the purposes of the present invention, gelling agent means compounds which constitute excellent texturing agents making it possible to balance formulations in terms of smoothness and stickiness.

[000327] Furthermore, certain glossy oils such as VISCOPLAST 14436H®, and the compounds marketed under the name LUSPLAN DD-DA5® and LUSPLAN DD-DA7® can also be used as gelling agents.

[000328] In one embodiment, the cosmetic composition according to the invention is characterized in that the gelling agent is chosen from the group comprising: organic gelling agents, mineral gelling agents, polymeric gelling agents, and mixtures thereof.

[000329] Preferably, the cosmetic composition according to the invention is characterized in that the gelling agent is of plant origin.

[000330] In one embodiment, the cosmetic composition according to the invention is characterized in that the gelling agent is an organic gelling agent chosen from the group comprising: ethylcellulose and its derivatives, resins derived from rosin, esters of dextrin, fatty acid esters, and mixtures thereof.

[000331] In one embodiment, the cosmetic composition according to the invention is characterized in that the gelling agent is a mineral gelling agent chosen from the group comprising: hectorite and its derivatives, fumed silica and its derivatives, and mixtures thereof. .

[000332] In one embodiment, the cosmetic composition according to the invention is characterized in that the gelling agent is a polymeric gelling agent chosen from the group comprising: organopolysiloxanes and their derivatives, dimethicone copolymers and their derivatives, polystyrene copolymers /polyisoprene, polystyrene/polybutadiene copolymers, polystyrene/copoly(ethylene-propylene) copolymers, polystyrene/copoly(ethylene-butylene) copolymers, mixtures of copolymers in isododecane such as ethylene/propylene copolymer or butylene/ethylene/styrene copolymer, polyesters and their derivatives, polyamide resins, and their mixtures. [000333] In one embodiment, the cosmetic composition according to the invention is characterized in that the gelling agent is dextrin palmitate or one of its derivatives. [000334] In one embodiment, the cosmetic composition according to the invention is characterized in that the gelling agent is a modified hectorite of the BENTONE GEL ISD V® type or one of its equivalents.

[000335] In one embodiment, the cosmetic composition according to the invention is characterized in that the gelling agent is a modified hectorite of the VEGELIGHT BENTONE SILK SB® type or one of its equivalents.

[000336] In one embodiment, the cosmetic composition according to the invention is characterized in that the gelling agent is a modified hectorite of the disteardimonium hectorite type associated with triethyl citrate.

[000337] In one embodiment, the cosmetic composition according to the invention is characterized in that the gelling agent is a mixture of copolymer in isododecane such as the ethylene/propylene copolymer.

[000338] In one embodiment, the cosmetic composition according to the invention is characterized in that the gelling agent is the combination of a dimethicone polymer and a mixture of alkanes marketed under the name VEGELIGHT SILK SI 118 ® by BIOSYNTHIS, or one of its equivalents.

[000339] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the gelling agent is at least 5% relative to the total mass of the cosmetic composition.

[000340] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the gelling agent is at least 15% relative to the total mass of the cosmetic composition.

[000341] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the gelling agent is between 5% and 30% relative to the total mass of the cosmetic composition.

[000342] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the gelling agent is between 5% and 20% relative to the total mass of the cosmetic composition.

[000343] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the gelling agent is between 15% and 30% relative to the total mass of the cosmetic composition.

[000344] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the gelling agent is between 5% and 15% relative to the total mass of the cosmetic composition. [000345] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the gelling agent is between 15% and 25% relative to the total mass of the cosmetic composition.

[000346] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the gelling agent is between 20% and 30% relative to the total mass of the cosmetic composition.

[000347] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one film-forming polymer.

[000348] For the purposes of the present invention, the term film-forming polymer means a polymer capable of forming a macroscopically continuous film, particularly on the lips in the context of our invention.

[000349] In one embodiment, the cosmetic composition according to the invention is characterized in that the film-forming polymer is chosen from the group comprising: acrylic polymers, polyurethanes, polyesters, polyamides, silicone polymers.

[000350] In one embodiment, the cosmetic composition according to the invention is characterized in that the film-forming polymer is trimethylsilloxysillicate marketed under the name TMS 803.

[000351] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the film-forming polymer is at least 1% relative to the total mass of the cosmetic composition.

[000352] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the film-forming polymer is at least 10% relative to the total mass of the cosmetic composition.

[000353] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the film-forming polymer is between 1% and 25% relative to the total mass of the cosmetic composition.

[000354] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the film-forming polymer is between 10% and 25% relative to the total mass of the cosmetic composition.

[000355] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the film-forming polymer is between 1% and 10% relative to the total mass of the cosmetic composition.

[000356] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the film-forming polymer is between 10% and 20% relative to the total mass of the cosmetic composition. [000357] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one wax.

[000358] Waxes play an important role in the design of cosmetic products, lipsticks in particular, because they influence certain essential criteria such as the texture, appearance and/or solidity of the product.

[000359] In the context of the present invention, the term “wax” means a lipophilic compound having a reversible solid/liquid state change. In other words, the compound is solid at room temperature (at 25°C) and has a melting point greater than or equal to 30°C.

[000360] Preferably, within the meaning of the present invention, the waxes used have a melting point greater than or equal to 50°C.

[000361] In one embodiment, the cosmetic composition according to the invention is characterized in that the at least one wax is chosen from the group consisting of synthetic waxes, mineral waxes, vegetable waxes and animal waxes. .

[000362] In one embodiment, the cosmetic composition according to the invention is characterized in that the wax is a mineral wax or a synthetic wax chosen from the group comprising: microcrystalline waxes, paraffins, ozokerite, polyethylene waxes, silicone waxes, fluorinated waxes.

[000363] By “vegetable wax” is meant a composition comprising at least one partially or completely hydrogenated oil. These plant waxes may include esters of fatty acids and fatty alcohols, and may further include fatty acids, free fatty alcohols, long chain linear alkanes and/or unsaponifiables.

[000364] Preferably, within the meaning of the present invention, the waxes used are vegetable waxes.

[000365] In one embodiment, the cosmetic composition according to the invention is characterized in that the wax is a vegetable or animal wax chosen from the group comprising: lanolin wax, rice bran wax, Carnauba, Candellila wax, Berry wax, beeswax, sunflower wax, mimosa wax, jojoba wax, castor wax, olive wax.

[000366] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the wax is at least 2% relative to the total mass of the cosmetic composition.

[000367] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the wax is at least 5% relative to the total mass of the cosmetic composition. [000368] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the wax is between 2% and 20% relative to the total mass of the cosmetic composition.

[000369] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the wax is between 5% and 15% relative to the total mass of the cosmetic composition.

[000370] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the wax is between 2% and 10% relative to the total mass of the cosmetic composition.

[000371] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the wax is between 5% and 10% relative to the total mass of the cosmetic composition.

[000372] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one antioxidant.

[000373] In one embodiment, the cosmetic composition according to the invention is characterized in that the antioxidant is chosen from the group comprising: phenolic antioxidants of the BHA, BHT, DBPC, gallates type, anti-oxidants so-called natural ones such as dl-alpha-tocopherol or its derivatives, plant extracts, dibasic lipopeptides such as lysine or arginine, and their mixtures.

[000374] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the antioxidant is at least 0.01% relative to the total mass of the cosmetic composition.

[000375] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the antioxidant is at least 0.1% relative to the total mass of the cosmetic composition.

[000376] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the antioxidant is between 0.01% and 2% relative to the total mass of the cosmetic composition. .

[000377] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the antioxidant is between 0.01% and 1% relative to the total mass of the cosmetic composition. .

[000378] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the antioxidant is between 0.1% and 1% relative to the total mass of the cosmetic composition. .

[000379] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the antioxidant is between 0.01% and 0.1% relative to the total mass of the cosmetic composition. [000380] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one pigmentary part.

[000381] This pigment part makes it possible to obtain coloring of the cosmetic composition. The pigments used are of synthetic, mineral or vegetable origin. Their dosage is also subtle.

[000382] In one embodiment, the cosmetic composition according to the invention is characterized in that the pigment part is chosen from the group comprising: water-soluble dyes, fat-soluble dyes, pigments, pearls, flakes and their mixtures .

[000383] In one embodiment, the cosmetic composition according to the invention is characterized in that the pigment part is chosen from the group comprising: organic pigments such as fixed pigments or precipitated pigments, mineral pigments such as carbon dioxide titanium or iron oxides, sodium aluminosilicate thiosulfates, chromium oxides, bismuth oxychloride, copper phthalocyanine, metal-free phthalocyanine, chlorinated copper phthalocyanine. [000384] Thus, the level of titanium oxide determines the coverage and opacity of the film. [000385] The use of lacquers or precipitated pigments determines the color and chrominance.

[000386] As an illustration, other types of pigments can be used such as titanium mica, borosilicates and their derivatives, mica, silica.

[000387] Mineral pigments are used to nuance the shades while compounds such as bismuth oxychloride can be used to confer particular effects (metallic, shimmering effects, etc.).

[000388] In one embodiment, the cosmetic composition according to the invention is characterized in that the pigment part comprises a synthetic dye chosen from the group comprising: CI100006, CI12010, CI12085, CI12120, CI12370, CI12420, CI12490, CI14270, CI14700, CI14720, CI14815, CI15525, CI15580, CI15620, CI15630, CI15850, CI15865, CI15880, CI15980, CI15985, CI1035, CI16255, CI16290, CI17200, CI18050, CI451 00, CI45220, CI45380, CI45430.

[000389] In one embodiment, the cosmetic composition according to the invention is characterized in that the pigment part comprises a synthetic dye chosen from the group comprising: CI77499, CI77267, CI77268, CI77499 CI77266, CI50420, CI27755, CI28440, CI20470 and their mixtures.

[000390] In one embodiment, the cosmetic composition according to the invention is characterized in that the pigment part comprises a dye of plant origin chosen from fruit and/or plant extracts containing dyes. [000391] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigment part is at least 0.01% relative to the total mass of the cosmetic composition.

[000392] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigment part is at least 1% relative to the total mass of the cosmetic composition.

[000393] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigment part is at least 5% relative to the total mass of the cosmetic composition.

[000394] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigmentary part is between 0.01% and 20% relative to the total mass of the cosmetic composition.

[000395] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigment part is between 1% and 20% relative to the total mass of the cosmetic composition.

[000396] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigment part is between 5% and 20% relative to the total mass of the cosmetic composition.

[000397] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigment part is between 1% and 15% relative to the total mass of the cosmetic composition.

[000398] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigment part is between 5% and 15% relative to the total mass of the cosmetic composition.

[000399] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigment part is between 0.01% and 5% relative to the total mass of the cosmetic composition.

[000400] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigment part is between 5% and 10% relative to the total mass of the cosmetic composition.

[000401] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the pigment part is between 10% and 15% relative to the total mass of the cosmetic composition.

[000402] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one surfactant.

[000403] For the purposes of the present invention, surfactant means a compound which modifies the surface tension between two surfaces, phases. Generally speaking, these Compounds are amphiphilic molecules and make it possible to solubilize two immiscible phases of a composition.

[000404] In one embodiment, the cosmetic composition according to the invention is characterized in that the at least surfactant is chosen from the group comprising non-ionic, anionic and amphoteric surfactants.

[000405] In one embodiment, the cosmetic composition according to the invention is characterized in that the at least one surfactant is a non-ionic surfactant.

[000406] In one embodiment, the cosmetic composition according to the invention is characterized in that the at least surfactant is chosen from the group of non-ionic surfactants consisting of: polyoxyalkylene alkyl ethers, glycerin alkyl ethers, glycerin fatty acid esters, polyglycerin fatty acid esters, sorbitan fatty acid esters, derivatives thereof, and mixtures thereof.

[000407] In one embodiment, the cosmetic composition according to the invention is characterized in that the at least one surfactant is an anionic surfactant.

[000408] In one embodiment, the cosmetic composition according to the invention is characterized in that the at least surfactant is an anionic surfactant chosen from the group consisting of: alkyl phosphates, polyoxyalkylene alkyl ether phosphates , sulfonates, alkyl sulfates, polyaspartates, their derivatives and their mixtures.

[000409] In one embodiment, the cosmetic composition according to the invention is characterized in that the at least one surfactant is an amphoteric surfactant.

[000410] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the at least surfactant is at least 0.1% relative to the total mass of the cosmetic composition.

[000411] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the at least surfactant is at least 5% relative to the total mass of the cosmetic composition.

[000412] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the at least surfactant is between 0.1% and 30% relative to the total mass of the cosmetic composition. .

[000413] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the at least surfactant is between 5% and 15% relative to the total mass of the cosmetic composition.

[000414] In one embodiment, the cosmetic composition according to the invention is characterized in that it comprises a mixture according to the invention and at least one aqueous phase.

[000415] In one embodiment, the cosmetic composition according to the invention is characterized in that the aqueous phase consists of water. [000416] In one embodiment, the cosmetic composition according to the invention is characterized in that the aqueous phase comprises water and at least one organic solvent miscible with water.

[000417] In one embodiment, the cosmetic composition according to the invention is characterized in that the aqueous phase comprises at least one organic solvent miscible with water chosen from the group consisting of lower alcohols such as ethanol, isopropanol, butanol, isoamyl alcohol, glycols such as ethylene glycol, propylene glycol, 1,3-butylene glycol, ketones and short chain C2-C4 aldehydes.

[000418] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the aqueous phase is between 1 and 95% relative to the total mass of the cosmetic composition.

[000419] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the aqueous phase is between 5 and 80% relative to the total mass of the cosmetic composition.

[000420] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the aqueous phase is between 5 and 60% relative to the total mass of the cosmetic composition.

[000421] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the aqueous phase is between 1 and 50% relative to the total mass of the cosmetic composition.

[000422] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the aqueous phase is between 1 and 30% relative to the total mass of the cosmetic composition.

[000423] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the aqueous phase is between 10 and 40% relative to the total mass of the cosmetic composition.

[000424] In one embodiment, the cosmetic composition according to the invention is characterized in that the mass percentage of the aqueous phase is between 1 and 20% relative to the total mass of the cosmetic composition.

[000425] In one embodiment, the cosmetic composition according to the invention is characterized in that it has a naturalness index greater than or equal to 80% carbon 14 ( ¹⁴ C) determined according to one of the following ASTM standards D6866, EN 16640 or EN 16785-1.

[000426] In one embodiment, the cosmetic composition according to the invention is characterized in that it has a naturalness index greater than or equal to 85% carbon 14 ( ¹⁴ C) determined according to one of the following ASTM standards D6866, EN 16640 or EN 16785-1. [000427] In one embodiment, the cosmetic composition according to the invention is characterized in that it has a naturalness index greater than or equal to 90% carbon 14 ( ¹⁴ C) determined according to one of the following ASTM standards D6866, EN 16640 or EN 16785-1.

[000428] In one embodiment, the cosmetic composition according to the invention is characterized in that it has a naturalness index greater than or equal to 95% carbon 14 ( ¹⁴ C) determined according to one of the following ASTM standards D6866, EN 16640 or EN 16785-1.

[000429] In one embodiment, the cosmetic composition according to the invention is characterized in that at least 85% by weight of its ingredients is biosourced relative to the total mass of the composition.

[000430] In one embodiment, the cosmetic composition according to the invention is characterized in that at least 50% by weight of its ingredients is of natural origin relative to the total mass of the composition.

[000431] In one embodiment, the cosmetic composition according to the invention is characterized in that at least 75% by weight of its ingredients is of natural origin relative to the total mass of the composition.

[000432] In one embodiment, the cosmetic composition according to the invention is characterized in that at least 90% by weight of its ingredients is of natural origin relative to the total mass of the composition.

[000433] In one embodiment, the cosmetic composition according to the invention is characterized in that 50% by weight of its ingredients is of natural origin relative to the total mass of the composition.

[000434] In one embodiment, the cosmetic composition according to the invention is characterized in that 75% by weight of its ingredients is of natural origin relative to the total mass of the composition.

[000435] In one embodiment, the cosmetic composition according to the invention is characterized in that 90% by weight of its ingredients is of natural origin relative to the total mass of the composition.

[000436] The invention also relates to the use of the mixture according to the invention for the preparation of a cosmetic composition for lipstick, long-lasting lipstick or lip glosses.

[000437] For the purposes of the present invention, the term "long-lasting" lipstick or also called "non-transfer" lipstick means a lipstick which does not leave marks, is water-resistant and sometimes in fat.

[000438] Likewise, the term “lip gloss” or even called “gloss” means a makeup product which gives a shiny and/or wet appearance to the lips, and sometimes, to color or even glitter them. Some of these lip glosses are transparent and can be applied over a classic lipstick to add a shine effect.

[000439] Classically, according to the book Design of cosmetic products: formulation, by Anne-Marie PENSE-LHERITIER published in 2014 by LAVOISIER, the composition of a lipstick is based around a binomial: base or support Pigmentary part

[000440] The base contains different types of ingredients selected essentially on their organoleptic properties: volatile solvents to facilitate application and hold; oils to provide slipperiness and ease of application; waxes, to fix consistency and hardness; fatty substances such as pasty fatty substances or gelling agents to adjust the smoothness and ease of use.

[000441] Obtaining a lipstick is done by seeking a subtle dosage between these different ingredients.

[000442] Various additives providing specific properties can be added to these ingredients: polymers, absorbent powders, stabilizing additives (antioxidants, preservatives, etc.), perfume and active ingredients where appropriate.

[000443] In one embodiment, the cosmetic compositions for long-lasting lipstick, or lip glosses comprising the mixture according to the invention have excellent stability and remarkable cosmetic qualities such as ease of application, resistance to water, good hold, intense and luminous color.

[000444] The invention also relates to the use of the mixture according to the invention for the preparation of a cosmetic eye makeup composition.

[000445] In one embodiment, the mixture according to the invention is used for the preparation of a cosmetic mascara or eyeliner composition.

[000446] Classically, according to the book Design of cosmetic products: formulation, by Anne-Marie PENSE-LHERITIER published in 2014 by LAVOISIER, there are mainly two types of mascara formulations:

Continuous water-based mascaras are also called “water-based mascara”

Continuous oil phase mascaras are also called “waterproof mascara”

[000447] In one embodiment, the mixture according to the invention is used for the preparation of cosmetic compositions of mascaras with a continuous oil phase. [000448] Continuous oil phase mascaras are mainly based on the use of wax or continuous oil phase emulsion. The goal is to form a continuous film on the surface of the eyelash, a film that is perfectly water resistant.

[000449] To do this, the mascara composition comprises in particular a fatty phase and a pigment part and this composition can optionally comprise an aqueous phase.

[000450] In one embodiment, the mascara composition comprising the mixture according to the invention comprises a mass percentage less than or equal to 10% in water relative to the total mass of the composition.

[000451] In a preferred embodiment, the mascara composition comprising the mixture according to the invention is free of an aqueous phase.

[000452] The fatty phase includes in particular volatile solvents, oils, surfactants, waxes, gelling agents, film-forming polymers, and preservatives.

[000453] The pigment part includes water-soluble dyes, fat-soluble dyes, pigments, pearls and flakes.

[000454] Obtaining a mascara is done by searching for a subtle dosage between these different ingredients.

[000455] Various additives providing specific properties can be added to these ingredients: polymers, absorbent powders, stabilizing additives such as antioxidants, perfume and active ingredients where appropriate.

[000456] Concerning eyeliners, their composition is similar to that of the mascaras developed above.

[000457] In one embodiment, cosmetic compositions for the eyes, such as those of mascara or eyeliner, comprising the mixture according to the invention have excellent stability and remarkable cosmetic qualities such as ease of application, water resistance, good hold and a more intense color.

[000458] The invention also relates to the use of the mixture according to the invention for the preparation of a cosmetic composition applicable to the skin.

[000459] In one embodiment, the mixture according to the invention is particularly used for the preparation of cosmetic compositions such as a makeup primer or base, a blush, an eye shadow, a foundation or a makeup remover formulation. .

[000460] Foundation means a formulation intended to unify the epidermis and lightly color it. It must be applied in an even layer but also allow for blending, on the face and part of the neck.

[000461] Likewise, the term base, primer or even makeup base is understood to mean a cosmetic composition which makes it possible to blur skin imperfections and prevents makeup from settling into wrinkles and pores throughout the day. Thus, this formulation makes it possible to perfect the skin before applying foundation, blush, etc.

[000462] Blush or commonly called “blush” is a cosmetic formulation intended to mimic and reinforce a “rosy cheek” visual.

[000463] Likewise, by eye shadow or commonly called “eye-shadow” we mean cosmetic formulations applicable to the eyelid in order to highlight the eyes by creating color contrasts.

[000464] By makeup remover formulation we mean a makeup remover oil but also a biphasic makeup remover formulation which makes it possible to clean the face of makeup while respecting the skin of its user.

[000465] As stated above, these make-up remover formulations can be in the form of a make-up remover oil made up of oils and different fatty substances.

[000466] They can also be in the form of a biphasic formulation comprising an aqueous phase and an oily phase.

[000467] Conventionally, the mixture according to the invention is used for the preparation of cosmetic compositions applicable to the skin, in particular foundation and/or base compositions which can be formulated in a fluid or solid form of the type powder, loose compacted or cast.

[000468] These compositions can in particular, independently of each other, be presented in an anhydrous form or in the form of an emulsion.

[000469] These emulsions can be presented in different forms, namely in the form of an oil-in-water emulsion, water-in-oil emulsion but also under certain conditions in the form of multiple W/O/W (water/oil/water) emulsions. or even O/W/O (oil/water/oil) combining at least one aqueous phase and one fatty phase.

[000470] In one embodiment, the mixture according to the invention is used for the preparation of a cosmetic composition applicable to the skin comprising at least one aqueous phase and one fatty phase.

[000471] The aqueous phase consists essentially of water.

[000472] The fatty phase contains different types of ingredients selected essentially on their organoleptic properties: volatile solvents to facilitate the application and hold of oils to give slipperiness and ease of application of waxes, to fix the consistency and hardness fatty substances such as pasty fatty substances or gelling agents to adjust the smoothness and ease of use. [000473] Generally, the mixture according to the invention is used for the preparation of a cosmetic composition applicable to the skin comprising a pigmentary part.

[000474] Obtaining a satisfactory cosmetic composition applicable to the skin is achieved by seeking a subtle dosage between these different ingredients. [000475] Various additives providing specific properties can be added to these ingredients: polymers, absorbent powders, stabilizing additives (antioxidants, preservatives, etc.), perfume and active ingredients where appropriate.

[000476] In one embodiment, the cosmetic compositions applicable to the skin such as bases or primers, foundations or powders, comprising the mixture according to the invention have excellent stability and remarkable cosmetic properties such as ease of application. application, water resistance, good hold, more intense and luminous color.

[000477] The invention also relates to the use of the mixture according to the invention for the preparation of a cosmetic composition for the treatment of keratin fibers, in particular hair.

[000478] In one embodiment, the mixture according to the invention is used for the preparation of cosmetic compositions for the treatment of keratin fibers in the form of solution, dispersion, oil/water emulsion, water/oil emulsion , water/oil/water emulsion, powder, talc, sponge, foam, hairspray and gel. [000479] In one embodiment, the mixture according to the invention is used for the preparation of cosmetic compositions for the treatment of keratin fibers such as hair toners, hair dyes, hair styling products, shampoos, conditioners hair conditioners, conditioning shampoos, hair treatment products, hair sprays, hair masks, hair care products, hair treatment products, perm setting solutions, hair conditioning products hair styling, shampoos for colored hair, hair fixatives, hair holding products, hair styling preparations, leave-in hair products, curling iron lotions, setting mousses, gels hair products, hair waxes or combinations thereof.

[000480] In one embodiment, the cosmetic compositions for the treatment of keratin fibers, in particular hair, comprising the mixture according to the invention have excellent stability and remarkable cosmetic properties such as ease of application, good hold , a luminous color and an intense shine.

[000481] The following examples are given in order to illustrate the invention.

[000482] Method for determining viscosity [000483] The viscosity is determined using a Brookfield type automatic viscometer.

[000484] The type of mobile and the speed of the mobile are adapted to the measurement range.

[000485] The result of the measurement is the dynamic viscosity expressed in cP or mPa.s.

[000486] This value divided by the density of the product makes it possible to obtain the kinematic viscosity expressed in cSt or mm ² . s ^-1 .

[000487] Method for determining the acid number

[000488] The quantity of free acids is determined using the NF EN ISO 660 method.

[000489] Method for determining the hydroxyl number

[000490] The quantity of free hydroxyl is determined using the NF ISO 4629 4629-2 method.

[000491] Method for determining density

[000492] The density is measured using a DENSITO device from Mettler Toledo.

It is expressed in g. cm ^-3 .

[000493] Method of measuring the refractive index

[000494] The refractive index is measured using an automatic device of the Model RFM330-M type, Belligham and Stanley Ltd.

Example 1: process for preparing a mixture according to the invention

[000495] 47.5 kg of C36 diacid (Pripol 1009, Croda), 54 kg of diol are loaded into a 700 L reactor equipped with a heating system, stirring and a vacuum system. C36 (Pripol 2033, Croda) and 41.4 kg of squalane (Squalive, Biosynthis).

[000496] The pressure is lowered to 10 mbar while the temperature of the mixture with stirring gradually rises to 220°C.

[000497] 5 kg of water are recovered by condensation during the esterification reaction.

[000498] The temperature of the reaction medium is then lowered to 100°C and the pressure is returned to atmospheric pressure.

[000499] The mixture obtained, 138 kg, is composed of 70% polyester and 30% squalane by mass.

[000500] The mixture according to the invention has a viscosity of 384,515 cSt at 40°C, a density of 0.8699 at 40°C, an acid number of 0.34 mg KOH/g, a refractive index of 1 .4775 at 20°C and a hydroxyl number of 10 mg KOH/g. Example 2: process for preparing a mixture according to the invention

[000501] 47.5 kg of C36 diacid (Pripol 2009, Croda), 54 kg of diol are loaded into a 700 L reactor equipped with a heating system, stirring and a vacuum system. C36 (Pripol 2033, Croda), 41.4 kg of squalene (Vegetable squalene ST, Biosynthis) and 0.1 kg of methanesulfonic acid.

[000502] The pressure is lowered to 10 mbar while the temperature of the mixture with stirring gradually rises to 160°C.

[000503] 5 kg of water are recovered by condensation during the esterification reaction.

[000504] The temperature of the reaction medium is then lowered to 100°C and the pressure is returned to atmospheric pressure.

[000505] The mixture obtained, 138 kg, is composed of 70% polyester and 30% squalene by mass.

[000506] The mixture according to the invention has a viscosity of 266,007 cSt at 40°C, a density of 0.8699 at 40°C, an acid number of 0.81 mg KOH/g, a refractive index of 1 .4906 at 20°C and a hydroxyl number of 10 mg KOH/g.

Example 3: process for preparing a mixture according to the invention

[000507] 47.5 kg of C36 diacid (Pripol 1009, Croda), 54 kg of diol are loaded into a 700 L reactor equipped with a heating system, stirring and a vacuum system. C36 (Pripol 2033, Croda), 41.4 kg of a mixture of C16-C18 alkanes (Vegelight 1618, Biosynthis) and 0.1 kg of tin oxalate.

[000508] The pressure is lowered to 200 mbar while the temperature of the mixture with stirring gradually rises to 170°C.

[000509] 5 kg of water are recovered by condensation during the esterification reaction.

[000510] The temperature of the reaction medium is then lowered to 100°C and the pressure is returned to atmospheric pressure.

[000511] The mixture obtained, 138 kg, is composed of 70% polyester and 30% of a mixture of C16-C18 alkanes by mass.

[000512] The mixture according to the invention has a viscosity of 120080 cSt at 40°C, a density of 0.8436 at 40°C, an acid number of 0.20 mg KOH/g, a refractive index of 1, 4697 of 20°C and a hydroxyl number less than 10 mg KOH/g.

Example 4: cosmetic hair serum composition comprising a mixture according to the invention

[000513] A cosmetic hair serum composition is prepared from the mixture according to the invention prepared according to the process described in Example 1. [000514] This mixture is composed of 70% by mass of polyester resulting from the reaction between the diacid C36 (Pripol 1009, Croda) and the diol C36 (Pripol 2033, Croda) and 30% by mass of squalane.

[000515] The detailed composition of this cosmetic formulation of hair serum is given in the table below:

[Table 1]

[000516] The ingredients of phase 1 are dispersed using Ultra-Turrax™.

[000517] Phases 1 and 2 are then mixed to obtain a hair serum.

[000518] The cosmetic hair serum composition comprising a mixture according to the invention has the following characteristics: a refractive index of 1.4348 at 20°C and a viscosity of 33 cSt at 25°C.

Example 5: cosmetic mascara composition comprising a mixture according to the invention

[000519] A cosmetic mascara composition is prepared from a mixture according to the invention prepared according to the process described in Example 2.

[000520] This mixture is composed of 70% by mass of polyester resulting from the reaction between the diacid C36 (Pripol 1009, Croda) and the diol C36 (Pripol 2033, Croda) and 30% by mass of squalene.

[000521] The detailed composition of this cosmetic formulation of hair serum is given in the table below:

[Table 2]

[000522] The ingredients of phase 1 are mixed and the mixture is heated to a maximum of 40°C.

[000523] The ingredients of phase 2 are mixed and heated to 60°C.

[000524] Phase 2 is added to phase 1.

[000525] Then, phase 3 is added to the mixture of phases 1 and 2.

[000526] Phase 4 is gradually added to the mixtures of phases 1, 2 and 3 with vigorous stirring.

[000527] Finally, the ingredients of phase 5 are added to the mixture of phases 1, 2, 3 and 4.

Example 6: process for preparing an ultra-viscous Viscoplast.

[000528] In a 700L reactor, equipped with a heating system, stirring and a vacuum system are loaded: 166 kg of C36 diacid (Pripol 1009 from CRODA), 30kg of 1.4 Butanediol (1.4BDO from BRENNTAG), 4 kg of diol C36 (Pripol 2033 from CRODA) and 2 kg of catalyst B, which is tin oxalate.

[000529] The mixture is stirred and the pressure is gradually lowered to a pressure of 10 mbar.

[000530] The temperature is then gradually raised to 170°C.

[000531] During esterification, 12kg of water and excess BDO are evaporated. [000532] The temperature is then lowered to 100°C and the pressure is returned to atmospheric pressure.

[000533] The mixture obtained, 200 kg, is composed of 100% ultra viscous Viscoplast.

[000534] The ultra-viscous Viscoplast has a molecular mass of 142,261 g/mol measured by Size Exclusion Chromatography (SEC), and it has a viscosity of 500,000 cSt, a density of 0.9500 at 40°C, an index hydroxyl of 30 mg KOH/g, an acid index of 2.0 mg KOH/g and a refractive index at 20°C of 1.4853.

Example 7: Process for preparing an ultra-viscous viscoplast.

In a 300L reactor, equipped with a heating system, stirring and a vacuum system are loaded: 166kg of C36 diacid (pripol 1009 from croda), 27kg of 1.4 Butanediol (1, 4BDO from brenntag), and 0.2kg of acid catalyst A, which is methane sulfonic acid. The mixture is stirred and the pressure is gradually lowered to a pressure of 10 mbar. The temperature is then gradually raised to 170°C. during esterification, 10.5 kg of water and excess BDO are evaporated. The temperature is then lowered to 100°C and the pressure is returned to atmospheric pressure. The reaction mixture is drawn off 182.7 kg and is composed of 100% ultra viscous viscoplast.

This composition has the following characteristics: a viscosity of 1,600,000 cST, a density of 0.9500 at 40°C, an acid index of 1.7 mg KOH/g and a refractive index at 20°C of 1. 4853.

[000535] In comparison, a Viscoplast prepared according to a protocol of the prior art such as VISCOPLAST GREEN 3,000, having a viscosity of 3,000 cSt, and has an average molecular mass of 20,602 g/mol measured by Size Exclusion Chromatography (SEC) as well as a density of 0.9500.

[000536] In conclusion, the Viscoplasts obtained by a process according to the invention have both lower hydroxyl indices than those of the prior art, while having higher viscosities and molecular masses.

Claims

[Claim 1] Mixture comprising: a) at least one polyester resulting from a reaction between at least one dicarboxylic acid dimer and at least one alcohol carrying at least two hydroxyl functions, the at least one polyester having a viscosity of at least 200,000 cSt at 40°C and a hydroxyl number less than 30 mg KOH/g, b) at least one biosourced hydrocarbon compound. [Claim 2] Polyester resulting from a reaction between at least one dicarboxylic acid dimer and at least one alcohol bearing at least two hydroxyl functions, the at least one polyester having a viscosity of at least 500,000 cSt at 40°C and a hydroxyl number less than 30 mg KOH/g. [Claim 3] Mixture according to claim 1 or polyester according to claim 2, characterized in that the at least one polyester comes from a reaction between at least one dicarboxylic acid dimer of plant origin and at least one alcohol carrying least two hydroxyl functions of plant origin. [Claim 4] Mixture according to any one of the preceding claims or polyester according to any one of claims 2 to 3, characterized in that the at least one dicarboxylic acid dimer is chosen from the group consisting of acid dimers hydrogenated oleic acid, hydrogenated linoleic and/or linolenic acid dimers, alone or in mixture. [Claim 5] Blend according to claim 4 or polyester according to claim 4, characterized in that the at least one dicarboxylic acid dimer is the compound with CAS number 68783-41-5. [Claim 6] Mixture according to claim 3 or polyester according to claim 3, characterized in that the at least one alcohol carrying two hydroxyl functions is chosen from the group consisting of (9Z,12Z)-18-[(6Z, 9Z)-18- hydroxyoctadeca-6,9-dienoxy]octadeca-9,12-dien-l-ol (CAS 147853-32-5), 1,4- butanediol, 1,3-propanediol, 1, 5-pentanediol and mixtures thereof. [Claim 7] Mixture according to claim 1 characterized in that the at least biosourced hydrocarbon compound is a non-volatile compound. [Claim 8] Mixture according to claim 1 characterized in that the at least biosourced hydrocarbon compound is of plant origin. [Claim 9] Mixture according to claim 1 characterized in that the at least biosourced hydrocarbon compound is chosen from the group consisting of linear or branched, saturated or unsaturated alkanes comprising at least 12 carbon atoms, alone or in a mixture. [Claim 10] Mixture according to any one of claims 7 to 9 characterized in that the at least biosourced hydrocarbon compound is chosen from the group consisting of squalane, squalene and mixtures of C16-C18 alkanes. [Claim 11] Mixture according to any one of the preceding claims, characterized in that it has a percentage greater than or equal to 85% of carbon 14 (14C) determined according to one of the following standards ASTM D6866, EN 16640 or EN 16785 -1. [Claim 12] Mixture according to any one of the preceding claims, characterized in that it comprises at least 50% by mass of at least one polyester resulting from a reaction between at least one dicarboxylic acid dimer and at least one alcohol carrying at least two hydroxyl functions and at least 10% by mass of at least one biosourced hydrocarbon compound. [Claim 13] Mixture according to any one of the preceding claims, characterized in that it contains from 50 to 90% by mass of at least one polyester resulting from a reaction between at least one dicarboxylic acid dimer and at least one alcohol carrying at least two hydroxyl functions and 10 to 50% by mass of at least one biosourced hydrocarbon compound. [Claim 14] Process for obtaining the mixture according to any one of the preceding claims, characterized in that it comprises the following steps: a) there is at least one carboxylic acid dimer, b) there is at least one alcohol carrying at least two hydroxyl functions, c) we have at least one biosourced hydrocarbon compound, d) we mix the compounds of steps a), b) and c), e) we lower the pressure of the mixture to a pressure of between 900 and 10 mbar, f) the mixture is gradually heated to a target temperature of between 150°C and 250°C, g) the water formed during the condensation reaction is continuously eliminated, h) the water formed during the condensation reaction is continuously eliminated, obtains a mixture comprising a polyester and the biosourced hydrocarbon compound, characterized in that the compounds of steps a), b) and c) can be mixed in any order during step d). [Claim 15] Process for obtaining the mixture according to any one of claims 1 to 13, characterized in that at least one catalyst is added to the mixture obtained during step d) of the process according to claim 14. [Claim 16] Process according to claim 13, characterized in that the polyester obtained in step h), has a viscosity of at least 1,000,000 cSt at 40°C and a hydroxyl number less than 15 mg KOH/g . [Claim 17] Method according to any one of claims 13 to 14, characterized in that the dicarboxylic acid dimer is chosen from the group consisting of hydrogenated oleic acid dimers, linoleic acid dimers and/ or hydrogenated linolenics, and the at least one alcohol carrying two hydroxyl functions is chosen from the group consisting of (9Z,12Z)-18-[(6Z,9Z)-18-hydroxyoctadeca- 6,9-dienoxy]octadeca- 9,12-dien-l-ol (CAS 147853-32-5), 1,4-butanediol, 1,3-propanediol, 1,5-pentanediol and their mixtures. [Claim 18] Cosmetic composition comprising a mixture according to any one of claims 1 to 12 and at least one compound chosen from non-volatile oils, volatile oils, shiny oils, pasty fatty substances, gelling agents, film-forming polymers , waxes, anti-oxidants, pigments, dyes, surfactants, an aqueous phase, and mixtures thereof. [Claim 19] Cosmetic composition according to claim 17, characterized in that the mass percentage content of the mixture is greater than or equal to 5% relative to the total mass of the composition. [Claim 20] Cosmetic composition according to any one of claims 17 and 18 characterized in that the cosmetic composition has a percentage greater than or equal to 80% of carbon 14 (14C) determined according to one of the following standards ASTM D6866, EN 16640 or EN 16785-1. [Claim 21] Use of the mixture according to any one of claims 1 to 12, for the preparation of a cosmetic composition for lipstick, long-lasting lipstick or lip glosses. [Claim 22] Use of the mixture according to any one of claims 1 to 12, for the preparation of a cosmetic eye makeup composition. [Claim 23] Use of the mixture according to any one of claims 1 to 12, for the preparation of a cosmetic composition applicable to the skin. [Claim 24] Use of the mixture according to any one of claims 1 to 12, for the preparation of a cosmetic composition for the treatment of keratin fibers.