FR3131212A1 - Cosmetic composition comprising a polyhydroxyalkanoate copolymer with an (un)saturated hydrocarbon chain, and a modified polysaccharide - Google Patents

Abstract

The present invention relates to a cosmetic composition comprising a) one or more polyhydroxyalkanoate (PHA) copolymer(s) which contains, which contains and preferably consisting of, several repeating units chosen from the following units (A), as well as their optical isomers , geometric, their acid or base salts, organic or mineral, and their solvates such as hydrates: -[-O-CH(R1)-CH2-C(O)-]- unit (A) polymeric units (A) in which: R 1 is as defined in the description and b) one or more modified polysaccharide(s).

Description

Cosmetic composition comprising a polyhydroxyalkanoate copolymer with an (un)saturated hydrocarbon chain, and a modified polysaccharide

The present invention relates to a cosmetic composition comprising a) at least one polyhydroxyalkanoate (PHA) copolymer with (un)saturated hydrocarbon groups, b) at least one modified polysaccharide, c) optionally at least one fatty substance, and d) optionally at least one organic solvent different from c) as well as a process for treating keratin materials using such a composition.

It is known to use film-forming polymers in cosmetics which can be transported in organic media such as hydrocarbon oils. Polymers are used in particular as a film-forming agent in makeup products such as mascaras, eyeliners, eye shadows or lipsticks.

Document FR-A-2964663 describes a cosmetic composition comprising pigments coated with a C ₃ -C ₂₁ polyhydroxyalkanoate such as poly(hydroxybutyrate-co-hydroxyvalerate).

Document WO 2011/154508 describes a cosmetic composition comprising a 4-carboxy-2-pyrolidinone ester derivative and a film-forming polymer which may be a polyhydroxyalkanoate such as polyhydroxybutyrate, polyhydroxyvalerate and polyhydroxybutyrate-co-polyhydroxyvalerate.

Document US-A-2015/274972 describes a cosmetic composition comprising a cosmetic composition comprising a thermoplastic resin, such as a polyhydroxyalkanoate, in aqueous dispersion and a silicone elastomer.

Most polyhydroxyalkanoate copolymers are polymers resulting from the polycondensation of largely identical repeating polymer units and originating from the same carbon source or substrate. These documents do not describe the cosmetic use of copolymers resulting from polycondensation from a substrate or ^1st source of aliphatic carbon, and at least a ^2nd substrate different from the first comprising one or more hydrocarbon groups (in) saturated with modified polysaccharides. A need therefore exists to have a composition comprising lipophilic or lipophilic polyhydroxyalkanoate copolymers soluble in the fatty phase. This makes it possible to obtain a film on keratin materials with good cosmetic properties, in particular good resistance to oils and sebum, as well as being able to play on shine or dullness.

The applicant has discovered that polyhydroxyalkanoate copolymers with particular grafted or functionalized hydrocarbon groups, as defined below, can be easily used in fatty media, thus making it possible to obtain homogeneous compositions. Composition C1 has good stability, particularly after storage for one month at room temperature (25°C). Composition C1, particularly after its application to keratin materials, makes it possible to obtain a film having good cosmetic properties, good color fastness without bleeding for when the composition, as well as a matte or shiny appearance of the treated keratin materials .

In many conditions of use of flame-forming materials on keratin materials such as in makeup or coloring applications for example, it is desirable to have, in addition to good resistance to water and oils, particularly food oils such as olive oil, very good resistance to friction of deposits of film-forming materials both to avoid transfer, for example to clothing, and to maintain a homogeneous appearance of the deposits. If the friction resistance is insufficient, deposits can be obtained which quickly become very unsightly for consumers, particularly if these deposits are colored as in makeup applications such as lipsticks, foundations or mascaras. In hair applications, the lack of resistance to friction is also very problematic in all coloring applications because it causes transfer to clothing and creates an unsightly appearance of the keratin fibers. There is therefore a need to improve the performance of PHAs conveyed, particularly in the oil phase.

There is therefore a real need to obtain deposits of film-forming materials which are resistant to oils, particularly food oils, resistant to water and have very good resistance to friction.

Particularly when the deposit is colored, the deposit obtained must also have good resistance to humidity to avoid color transfers, for example to clothing, which in themselves are problematic and which make the deposit very unsightly.

These problems are solved by the use of compositions C1 described below, these compositions making it possible to significantly improve the friction resistance of the polyhydroxyalkanoate (PHA) copolymer(s). Furthermore, the C1 compositions according to the invention make it possible to obtain, after deposition, a film on keratin materials having good cosmetic properties, in particular good resistance to oils and sebum, good resistance to water, good adhesion, good resistance to friction as well as being able to play on shine or dullness.

• R ¹ représente une chaine hydrocarbonée, non cyclique saturée ou insaturée, linéaire ou ramifiée, ou cyclique saturée ou insaturée, aromatique ou non aromatique, comprenant de 5 à 28 atomes de carbones ; de préférence la chaine hydrocarbonée est choisie parmi i) (C₅-C₂₈)alkyle, linéaire ou ramifié, ii) (C₅-C₂₈)alkényle, linéaire ou ramifié, iii) (C₅-C₂₈)alkynyle, linéaire ou ramifié, de préférence le groupe hydrocarboné est linéaire ;

ladite chaine hydrocarbonée étant :

• éventuellement substituée par un ou plusieurs atomes ou groupes choisis parmi : a) halogène tels que chlore ou brome, b) hydroxy, c) thiol, d) (di)(C₁-C₄)(alkyl)amino, e) (thio)carboxy, f) (thio)carboxamide –C(O)-N(R_a)₂ou –C(S)-N(R_a)₂, g) cyano, h) iso(thio)cyanate, i) (hétéro)aryle tel que phényl ou furyl, et j) (hétéro)cycloalkyle tel que anhydride, époxyde ou dithiolane, k) actif cosmétique ; l) R-X avecRreprésentant un groupe choisi parmi α) cycloalkyle tel que cyclohexyle, β) hétérocycloalkyle tel que sucre de préférence monosaccharide tel que glucose, γ) (hétéro)aryle tel que phényle, δ) actif cosmétique, m) thiosulfate et X représentant a’) O, S, N(R_a) ou Si(R_b)(R_c), b’) S(O)_r, ou (thio)carbonyle, c’) ou les associations de a’) avec b’) tels que (thio)ester, (thio)amide, (thio)urée, sulfonamide ;R _a représentant un atome d’hydrogène, ou un groupe (C₁-C₄)alkyle, ou aryl(C₁-C₄)alkyle tel que benzyle, de préférence R_areprésente un atome d’hydrogène ;R _b etR _c , identiques ou différents, représentent un groupe (C₁-C₄)alkyle ou (C₁-C₄)alkoxy particulièrement un seul substituant ; de préférence choisi parmi b) halogène, et j) tel que epoxide ; et/ou
• éventuellement interrompue par un ou plusieurs a’) hétéroatomes tels que O, S, N(R_a), et Si(R_b)(R_c), b’) S(O)_r, (thio)carbonyle, c’) ou les associations de a’) avec b’) tels que (thio)ester, (thio)amide, (thio)urée, sulfonamide avecrvalant 1 ou 2,R _a étant tel que défini précédemment, de préférenceR _a représente un atome d’hydrogène,R _b etR _c , étant tels que définis précédemment ;
• et

b) un ou plusieurs polysaccharide(s) modifié(s) ; et
c) éventuellement un ou plusieurs corps gras ; de préférence liquides à 25 °C et à pression atmosphérique ; et
d) éventuellement un ou plusieurs solvant(s) organique(s) différent(s) de c), de préférence polaire aprotique ou protique, particulièrement polaire et protique ; et
e) éventuellement de l’eau,
de préférence la composition C1 contient les ingrédients c) + d).Thus the main object of the present invention is a composition C1 comprising:
a) one or more polyhydroxyalkanoate (PHA) copolymer(s) which contains, preferably consisting of, several repeating units chosen from the following units (A) , as well as their optical, geometric isomers, their acid salts or basic, organic or mineral, and their solvates such as hydrates:
-[-O-CH(R ¹ )-CH ₂ -C(O)-]- unit (A)
polymeric units (A) in which:

• R ¹ represents a hydrocarbon chain, non-cyclic saturated or unsaturated, linear or branched, or cyclic saturated or unsaturated, aromatic or non-aromatic, comprising from 5 to 28 carbon atoms; preferably the hydrocarbon chain is chosen from i) (C ₅ -C ₂₈ ) alkyl, linear or branched, ii) (C ₅ -C ₂₈ ) alkenyl, linear or branched, iii) (C ₅ -C ₂₈ ) alkynyl, linear or branched, preferably the hydrocarbon group is linear;

said hydrocarbon chain being:

• optionally substituted by one or more atoms or groups chosen from: a) halogen such as chlorine or bromine, b) hydroxy, c) thiol, d) (di)(C ₁ -C ₄ )(alkyl)amino, e) (thio )carboxy, f) (thio)carboxamide –C(O)-N(R _a ) ₂ or –C(S)-N(R _a ) ₂ , g) cyano, h) iso(thio)cyanate, i) ( hetero)aryl such as phenyl or furyl, and j) (hetero)cycloalkyl such as anhydride, epoxide or dithiolane, k) cosmetic active ingredient; l) RX with R representing a group chosen from α) cycloalkyl such as cyclohexyl, β) heterocycloalkyl such as sugar preferably monosaccharide such as glucose, γ) (hetero)aryl such as phenyl, δ) cosmetic active ingredient, m) thiosulfate and representing a') O, S, N(R _a ) or Si(R _b )(R _c ), b') S(O) _r , or (thio)carbonyl, c') or the associations of a') with b') such as (thio)ester, (thio)amide, (thio)urea, sulfonamide; R _a representing a hydrogen atom, or a (C ₁ -C ₄ )alkyl group, or aryl (C ₁ -C ₄ )alkyl such as benzyl, preferably R _a represents a hydrogen atom; R _b and R _c , identical or different, represent a (C ₁ -C ₄ ) alkyl or (C ₁ -C ₄ ) alkoxy group, particularly a single substituent; preferably chosen from b) halogen, and j) such as epoxide; and or
• optionally interrupted by one or more a') heteroatoms such as O, S, N(R _a ), and Si(R _b )(R _c ), b') S(O) _r , (thio)carbonyl, c') or the associations of a') with b') such as (thio)ester, (thio)amide, (thio)urea, sulfonamide with r being 1 or 2, R _a being as defined above, preferably R _a represents a hydrogen atom, R _b and R _c , being as defined above;
• And

b) one or more modified polysaccharide(s); And
c) possibly one or more fatty substances; preferably liquid at 25°C and atmospheric pressure; And
d) optionally one or more organic solvent(s) different from c), preferably polar aprotic or protic, particularly polar and protic; And
e) possibly water,
preferably composition C1 contains ingredients c) + d).

Another object of the invention is the use in cosmetics of a composition C1 comprising a) one or more PHA copolymer(s) as defined(s) previously, b) one or more polysaccharide(s) ) modified, optionally c) one or more fatty substances as defined above, d) optionally one or more organic solvent(s) different from c), and e) optionally water, preferably composition C1 contains ingredients c) + d).

Another object of the invention is a process for treating keratin materials, preferably α) keratin fibers, in particular human fibers such as hair, or β) human skin, in particular lips, using a) one or more PHA copolymer(s) as defined above, b) one or more modified polysaccharide(s), optionally c) one or more fatty substances as defined above, optionally d) one or more organic solvent(s) different from c) and optionally e) water, preferably using ingredients a, b), c) and d).

More particularly, the subject of the invention is a cosmetic, non-therapeutic process for treating keratin materials, comprising the application to the keratin materials of a composition C1 as defined above, or C'1 as defined below. The treatment process is in particular a process of care or makeup of keratin materials.

• Par «Actif cosmétique» : on entend le radical d’un composé organique ou organosilicié pouvant être intégré à une composition cosmétique pour apporter un effet sur les matières kératiniques, que cet effet soit immédiat ou apporté par des applications répétées. A titre d’exemples d’actif cosmétique on peut citer les chromophores colorés ou non, fluorescents ou non tels que ceux issu d’azurants optiques, ou les chromophores issus de filtres UVA et/ou UVB, les actifs anti-âges ou destinés à apporter un bénéfice sur la peau tels que les actifs ayant une action sur la fonction barrière, les actifs déodorants différents de particules minérales, les actifs antitranspirants différents de particules minérales, les actifs desquamants les actifs antioxydants, les actifs hydratants, les actifs régulateurs de sébum, les actifs destinés à limiter la brillance de la peau, les actifs destinés à lutter contre les effets de la pollution, les actifs antimicrobiens ou bactéricides, les actifs antipelliculaires, et les parfums.
• Par «(hétéro)aryle» on entend les groupes aryle ou hétéroaryle ;
• Par «(hétéro)cycloalkyle» on entend les groupes cycloalkyle ou hétérocycloalkyle;
• Les radicaux «aryle» ou «hétéroaryle» ou la partie aryle ou hétéroaryle d’un radical peuvent être substitués par au moins un substituant porté par un atome de carbone, choisi parmi :

• un radical alkyle en C₁-C₆, de préférence en C₁-C₄;
• un atome d’halogène tel que chlore, fluor ou brome ;
• un groupement hydroxy ;
• un radical alcoxy en C₁-C₂; un radical (poly)-hydroxyalcoxy en C₂-C₄;
• un radical amino ;
• un radical amino substitué par un ou deux radicaux alkyle, identiques ou différents, en C₁-C₆, C₁-C₆, de préférence en C₁-C₄;
• un radical acylamino (-NR-COR’) dans lequel le radical R est un atome d’hydrogène,
• un radical alkyle en C₁-C₄et le radical R’ est un radical alkyle en C₁-C₄; un radical carbamoyle ((R)₂N-CO-) dans lequel les radicaux R, identiques ou non, représentent un atome d’hydrogène, un radical alkyle en C₁-C₄;
• un radical alkylsulfonylamino (R’SO₂-NR-) dans lequel le radical R représente un atome d’hydrogène, un radical alkyle en C₁-C₄et le radical R’ représente un radical alkyle en C₁-C₄, un radical phényle ;
• un radical aminosulfonyle ((R)₂N-SO₂-) dans lequel les radicaux R, identiques ou non, représentent un atome d’hydrogène, un radical alkyle en C₁-C₄;
• un radical carboxylique sous forme acide ou salifiée (de préférence avec un métal alcalin ou un ammonium, substitué ou non) ;
• un groupement cyano (CN) ;
• un groupement polyhalogéno(C₁-C₄)alkyle, préférentiellement le trifluorométhyle (CF₃) ;

• la partie cyclique ou hétérocyclique d’un radical non aromatique peut être substituée par au moins un substituant porté par un atome de carbone choisi parmi les groupements :

• hydroxy,
• alcoxy en C₁-C₄, (poly)hydroxyalcoxy en C₂-C₄,
• alkylcarbonylamino ((RCO-NR’-) dans lequel le radical R’ est un atome d’hydrogène, un radical alkyle en C₁-C₄et le radical R est un radical alkyle en C₁-C₂, amino substitué par un ou deux groupements alkyle identiques ou différents en C₁-C₄;
• alkylcarbonyloxy ((RCO-O-) dans lequel le radical R est un radical alkyle en C₁-C₄, amino substitué par un ou deux groupements alkyle identiques ou différents en C₁-C₄;
• alkcoxycarbonyle ((RO-CO-) dans lequel le radical R est un radical alkyle en C₁-C₄, amino substitué par un ou deux groupements alkyle identiques ou différents en C₁-C₄;

• un radical cyclique, hétérocyclique, ou une partie non aromatique d’un radical aryle ou hétéroaryle, peut également être substitué par un ou plusieurs groupements oxo ;
• une chaîne hydrocarbonée est insaturée lorsqu’elle comporte une ou plusieurs liaisons doubles et/ou une ou plusieurs liaisons triples ;
• un radical «aryle» représente un groupement mono ou polycyclique hydrocarboné, condensé ou non, comprenant de 6 à 22 atomes de carbones, et dont au moins un cycle est aromatique ; préférentiellement le radical aryle est un phényle, biphényle, naphtyle, indényle, anthracényle, ou tétrahydronaphtyle ;
• un radical «hétéroaryle» représente un groupement mono ou polycyclique, condensé ou non, comprenant de 5 à 22 chaînons, de 1 à 6 hétéroatomes choisis parmi l’atome d’azote, d’oxygène, de soufre et de sélénium, et dont au moins un cycle est aromatique ; préférentiellement un radical hétéroaryle est choisis parmi acridinyle, benzimidazolyle, benzobistriazolyle, benzopyrazolyle, benzopyridazinyle, benzoquinolyle, benzothiazolyle, benzotriazolyle, benzoxazolyle, pyridinyle, tetrazolyle, dihydrothiazolyle, imidazopyridinyle, imidazolyle, indolyle, isoquinolyle, naphthoimidazolyle, naphthooxazolyle, naphthopyrazolyle, oxadiazolyle, oxazolyle, oxazolopyridyle, phénazinyle, phénooxazolyle, pyrazinyle, pyrazolyle, pyrilyle, pyrazoyltriazyle, pyridyle, pyridinoimidazolyle, pyrrolyle, quinolyle, tétrazolyle, thiadiazolyle, thiazolyle, thiazolopyridinyle, thiazoylimidazolyle, thiopyrylyle, triazolyle, xanthylyle;
• un radical «cyclique» ou «cycloalkyle» est un radical hydrocarboné cyclique non aromatique, mono ou polycyclique, condensé ou non, contenant de 5 à 22 atomes de carbone, pouvant comporter de 1 à plusieurs insaturations, de préférence le cycloalkyle est un groupe cyclohexyle;
• un radical «hétérocyclique» ou «hétérocycloalkyle» est un radical cyclique non aromatique mono ou polycyclique, condensé ou non, contenant de 3 à 9 chaînons, comportant de 1 à 4 hétéroatomes choisis parmi l’atome d’azote, d’oxygène, de soufre et de sélénium, de préférence l’hétérocycloalkyle est choisi parmi epoxyde, pipérazinyl, pipéridinyl, morpholinyl, ou dithiolane ;
• un radical «alkyle» est un radical hydrocarboné saturé, linéaire ou ramifié, en particulier en en C₁-C₆, de préférence en C₁-C₄;
• un radical «alkényle» est un radical hydrocarboné insaturé, linéaire ou ramifié, comprenant une ou plusieurs doubles liaisons, conjuguées ou non ;
• un radical «alkynyle» est un radical hydrocarboné insaturé, linéaire ou ramifié, comprenant une ou plusieurs triples liaisons, conjuguées ou non ;
• un radical «alkoxy» est un radical alkyl-oxy pour lequel le radical alkyle est un radical hydrocarboné, linéaire ou ramifié, en C₁-C₆préférentiellement en C₁-C₄;
• un radical «sucre», est un radical monosaccharide, ou polysaccharide, et leurs dérivés de sucre O-protégés tels que les esters de sucres et d'acides (C₁-C₆)alkylcarboxyliques comme l’acide acétique, les sucres à groupe(s) amine et dérivés (C₁-C₄)alkylés, tels que les dérivés méthylés comme le méthylglucose. On peut citer comme radical sucre : le sucrose (ou saccharose), le glucose, le galactose, le ribose, le fucose, le maltose, le fructose, le mannose, l'arabinose, le xylose, le lactose ;
• par «monosaccharide», on entend un sucre mono-osidique comprenant au moins 5 atomes de carbone de formule C_x(H₂O)_x, avec x un entier supérieur ou égal à 5, de préférence x est supérieur ou égal à 6, en particulier x est compris inclusivement entre 5 et 7, de préférence x = 6, ils peuvent être de configuration D ou L, et d’anomère alpha ou béta, ainsi que leurs sels et leurs solvates tels que les hydrates ;
• par «polysaccharide», on entend un sucre poly-osidique qui est un polymère constitué de plusieurs oses liés entre eux par des liaisons O-osidiques lesdits polymères étant constitués d’unités monosaccharides (également appelées mono-osidiques) telles que définies précédemment lesdites unités monosaccharidique comprenant au moins 5 atomes de carbone, de préférence 6, particulièrement les unités mono-osidiques sont reliées entre elles en 1,4 ou 1,6 en anomère α (alpha) ou β(beta), chaque unité osidique pouvant être de configuration L ou D, ainsi que ses sels et ses solvates tels que les hydrates desdits monosaccharides ; il s’agit plus particulièrement de polymères formés d'un certain nombre d'oses (ou monosaccharides) ayant pour formule générale : -[C_x(H₂O)_y)]_w- ou -[(CH₂O)_x]_w-, avec x un entier supérieur ou égal à 5, de préférence x est supérieur ou égal à 6, en particulier x est compris inclusivement entre 5 et 7, de préférence x = 6, et y un entier qui représente x - 1, et w est un entier supérieur ou égal à 2, particulièrement compris inclusivement entre 3 et 3000, plus particulièrement entre 5 et 2500, préférentiellement entre 10 et 2300, particulièrement compris inclusivement entre 15 et 1000, plus particulièrement entre 20 et 500, préférentiellement entre 25 et 200 ;
• par « sucre à groupe(s) amine », on entend que le radical sucre est substitué par un ou plusieurs groupe(s) amino NR₁R₂i.e. au moins un des groupes hydroxy d’au moins une unité osidique du radical sucre est remplacé par un groupe NR₁R₂, avec R₁et R₂, identiques ou différents, représentant i) un atome d’hydrogène, ii) un groupe (C₁-C₆)alkyle, iii) un groupe aryle tel que phényle, iv) un groupe aryl(C₁-C₄)alkyle tel que benzyle, vii) –C(Y)-(Y’)_f-R’₁avec Y et Y’, identiques ou différents, représentant un atome d’oxygène, de soufre ou N(R’₂), de préférence oxygène, f = 0 ou 1, de préférence 0 ; et R’₁et R’₂représentant i) à vi) de R₁et R₂définis précédemment, et en particulier R’₁désignant un groupe (C₁-C₆)alkyle tel que méthyle. De préférence R₁et/ou R₂représentent un atome d’hydrogène, ou un groupe (C₁-C₄)alkylcarbonyle tel que acétyle et plus préférentiellement R₁représente un atome d’hydrogène et R₂représente un groupe (C₁-C₄)alkylcarbonyle tel que acétyle.
• par «sel d'acide organique ou minéral», on entend plus particulièrement les sels d’acide organique ou minéral en particulier choisis parmi un sel dérivé i) d’acide chlorhydrique HCl, ii) d'acide bromhydrique HBr, iii) d'acide sulfurique H₂SO₄, iv) d'acides alkylsulfoniques : Alk-S(O)₂OH tels que d'acide méthylsulfonique et d’acide éthylsulfonique ; v) d'acides arylsulfoniques : Ar-S(O)₂OH tel que d'acide benzène sulfonique et d’acide toluène sulfonique ; vi) d’acides alkoxysulfiniques : Alk-O-S(O)OH tels que d'acide méthoxysulfinique et d'acide éthoxysulfinique ; vii) d’acides aryloxysulfiniques tels que d'acide toluèneoxysulfinique et d'acide phénoxysulfinique ; viii) d'acide phosphorique H₃PO₄; ix) d'acide triflique CF₃SO₃H et x) d'acide tétrafluoroborique HBF₄; xi) d’acides organiques carboxyliques R°-C(O)-OH (I’z) formule (I’z) dans laquelle R° représente un groupe (hétéro)aryle tel que phényle, (hétéro)aryl(C₁-C₄)alkyle tel que benzyle, ou (C₁-C₁₀)alkyle ledit groupe alkyle étant éventuellement substitué de préférence par un ou plusieurs groupes hydroxy, radicaux amino, ou carboxy, R° désignant de préférence un groupe (C₁-C₆)alkyle éventuellement substitué par 1, 2 ou 3 groupes hydroxy, ou carboxy plus préférentiellement les acides de formule (I’z) monocarboxyliques sont choisis parmi choisis parmi l’acide acétique l’acide glycolique, l'acide lactique, et leurs mélanges, et plus particulièrement parmi l’acide acétique et l’acide lactique ; et les acides polycarboxyliques sont choisis parmi l’acide tartrique, l'acide succinique, l’acide fumarique, l’acide citrique et leurs mélanges ; et xii) les acides aminés comportant plus de radicaux acides carboxyliques que de groupes amino tels que l’acide gamma-carboxyglutamique, l’acide aspartique, l’acide glutamique, en particulier l’acide gamma-carboxyglutamique ;
• un «contre-ion anionique» est un anion ou un groupement anionique associé à la charge cationique; plus particulièrement le contre-ion anionique est choisi parmi i) les halogénures tels que le chlorure, le bromure ; ii) les nitrates ; iii) les sulfonates parmi lesquels les C₁-C₆alkylsulfonates : Alk-S(O)₂O^-tels que le méthylsulfonate ou mésylate et l’éthylsulfonate ; iv) les arylsulfonates : Ar-S(O)₂O^-tel que le benzènesulfonate et le toluènesulfonate ou tosylate ; v) le citrate ; vi) le succinate ; vii) le tartrate ; viii) le lactate ; ix) les alkylsulfates : Alk-O-S(O)O^-tels que le méthylsulfate et l’éthylsulfate ; x) les arylsulfates : Ar-O-S(O)O^-tels que le benzènesulfate et le toluènesulfate ; xi) les alcoxysulfates : Alk-O-S(O)₂O^-tel que le méthoxy sulfate et l’éthoxysulfate ; xii) les aryloxysulfates : Ar-O-S(O)₂O^-, xiii) le phosphate ; xiv) l'acétate ; xv) le triflate ; et xvi) les borates tels que le tétrafluoroborate.
• Les «solvates» représentent les hydrates ainsi que l’association avec des alcools linéaires ou ramifiés en C₁-C₄linéaire ou ramifié tels que l’éthanol, l’isopropanol, le n-propanol ;
• par «chromophore» on entend un radical issu d’un composé incolore ou coloré capable d’absorber dans le rayonnement UV et/ou visible à une longueur d’onde λ_abscomprise entre 250 et 800 nm ; De préférence le chromophore est coloré i.e. qu’il absorbe les longueur d’onde dans le visible i.e. de préférence entre 400 et 800 nm. De préférence les chromophores apparaissent colorés à l’œil; particulièrement entre 400 et 700 nm (Ullmann’s Encyclopedia, 2005, Wiley-VcH, Verlag « Dyes, General Survey », § 2.1 Basic Principle of Color) ;
• par «chromophore fluorescent» on entend un chromophore qui est en outre capable de réémettre dans le domaine du visible à une longueur d’onde d’émission λ_émcomprise entre 400 et 800 nm, et supérieure à la longueur d’onde d’absorption. De préférence avec un déplacement de Stoke i.e. différence entre la longueur d’onde d’absorption maximale et la longueur d’onde d’émission est d’au moins 10 nm. De préférence chromophores fluorescents sont issus de colorants fluorescents capables d’absorber dans le visible λ_absi.e. à une longueur d’onde comprise entre 400 et 800 nm et de réémettre dans le visible λ_émcomprise entre 400 et 800 nm. Plus préférentiellement les chromophores fluorescents sont capables d’absorber à une λ_abscomprise entre 420 nm et 550 nm et de réémettre dans le visible à une λ_émcomprise entre 470 et 600 nm.
• par «chromophored’azurant»,on entend un chromophore issu de composé d’azurant optique ou d’«Optical brighteners, optical brightening agents (OBAs) »ou de« fluorescent brightening agents (FBAs) »,ou de« fluorescent whitening agents (FWAs) » i.e.qui absorbe dans le rayonnement UV i.e. à une longueur d’onde λ_abscomprise entre entre 250 et 350 nm de longueur d'onde et réémet ensuite cette énergie par fluorescence dans le visible à une longueur d’onde d’émission λ_émcomprise entre 400 et 600 nm, soit les longueurs d'onde entre le bleu-violet et le bleu-vert avec un maximum dans le bleu. Les chromophores d’azurant optique sont donc incolore à l’œil.
• Par «filtre UV-A» on entend un chromophore issu de composé qui filtre (ou absorbe) les rayons ultraviolets UV-A à une longueur d’onde comprise entre 320 et 400 nm. On peut distinguer les filtres UV-A courts (absorbant les rayons à une longueur d’onde comprise entre 320 et 340 nm), les filtres UV-A longs (absorbant les rayons à une longueur d’onde entre 340 et 400 nm).
• Par« filtre UV-B» on entend un chromophore issu de composé qui filtre (ou absorbe) les rayons ultraviolets UV-B à une longueur d’onde comprise entre 280 et 320 nm.

De plus, sauf indication contraire, les bornes délimitant l'étendue d'une plage de valeurs sont comprises dans cette plage de valeurs.For the purposes of the present invention, and unless otherwise indicated:

• By “ Cosmetic Active ”: we mean the radical of an organic or organosilicon compound that can be integrated into a cosmetic composition to provide an effect on keratin materials, whether this effect is immediate or provided by repeated applications. As examples of cosmetic active ingredients, we can cite colored or non-colored, fluorescent or non-fluorescent chromophores such as those from optical brighteners, or chromophores from UVA and/or UVB filters, anti-aging active ingredients or intended for provide a benefit to the skin such as active ingredients having an action on the barrier function, deodorant active ingredients different from mineral particles, antiperspirant active ingredients different from mineral particles, desquamating active ingredients, antioxidant active ingredients, moisturizing active ingredients, sebum regulating active ingredients , active ingredients intended to limit the shine of the skin, active ingredients intended to combat the effects of pollution, antimicrobial or bactericidal active ingredients, anti-dandruff active ingredients, and perfumes.
• By “ (hetero)aryl ” we mean the aryl or heteroaryl groups;
• By “ (hetero)cycloalkyl ” is meant cycloalkyl or heterocycloalkyl groups;
• The “ aryl ” or “ heteroaryl ” radicals or the aryl or heteroaryl part of a radical can be substituted by at least one substituent carried by a carbon atom, chosen from:

• a C ₁ -C ₆ alkyl radical, preferably C ₁ -C ₄ ;
• a halogen atom such as chlorine, fluorine or bromine;
• a hydroxy group;
• a C ₁ -C ₂ alkoxy radical; a (poly)-hydroxyalkoxy C ₂ -C ₄ radical;
• an amino radical;
• an amino radical substituted by one or two alkyl radicals, identical or different, in C ₁ -C ₆ , C ₁ -C ₆ , preferably in C ₁ -C ₄ ;
• an acylamino radical (-NR-COR') in which the radical R is a hydrogen atom,
• a C ₁ -C ₄ alkyl radical and the radical R' is a C ₁ -C ₄ alkyl radical; a carbamoyl radical ((R) ₂ N-CO-) in which the R radicals, identical or not, represent a hydrogen atom, a C ₁ -C ₄ alkyl radical;
• an alkylsulfonylamino radical (R'SO ₂ -NR-) in which the radical R represents a hydrogen atom, a C ₁ -C ₄ alkyl radical and the radical R' represents a C ₁ -C ₄ alkyl radical, a phenyl radical;
• an aminosulfonyl radical ((R) ₂ N-SO ₂ -) in which the R radicals, identical or not, represent a hydrogen atom, a C ₁ -C ₄ alkyl radical;
• a carboxylic radical in acidic or salified form (preferably with an alkali metal or an ammonium, substituted or not);
• a cyano group (CN);
• a polyhalo(C ₁ -C ₄ ) alkyl group, preferably trifluoromethyl (CF ₃ );

• the cyclic or heterocyclic part of a non-aromatic radical can be substituted by at least one substituent carried by a carbon atom chosen from the groups:

• hydroxy,
• C ₁ -C ₄ alkoxy, (poly)hydroxyC ₂ -C ₄ alkoxy,
• alkylcarbonylamino ((RCO-NR'-) in which the radical R' is a hydrogen atom, a C ₁ -C ₄ alkyl radical and the radical R is a C ₁ -C ₂ alkyl radical, amino substituted by a or two identical or different C ₁ -C ₄ alkyl groups;
• alkylcarbonyloxy ((RCO-O-) in which the radical R is a C ₁ -C ₄ alkyl radical, amino substituted by one or two identical or different C ₁ -C ₄ alkyl groups;
• alkkoxycarbonyl ((RO-CO-) in which the radical R is a C ₁ -C ₄ alkyl radical, amino substituted by one or two identical or different C ₁ -C ₄ alkyl groups;

• a cyclic, heterocyclic radical, or a non-aromatic part of an aryl or heteroaryl radical, can also be substituted by one or more oxo groups;
• a hydrocarbon chain is unsaturated when it contains one or more double bonds and/or one or more triple bonds;
• an “ aryl ” radical represents a mono or polycyclic hydrocarbon group, condensed or not, comprising from 6 to 22 carbon atoms, and of which at least one cycle is aromatic; preferably the aryl radical is phenyl, biphenyl, naphthyl, indenyl, anthracenyl, or tetrahydronaphthyl;
• a “ heteroaryl ” radical represents a mono or polycyclic group, condensed or not, comprising from 5 to 22 members, from 1 to 6 heteroatoms chosen from nitrogen, oxygen, sulfur and selenium atoms, and of which at least the less aromatic a ring is; preferably a heteroaryl radical is chosen from acridinyl, benzimidazolyl, benzobistriazolyl, benzopyrazolyl, benzopyridazinyl, benzoquinolyl, benzothiazolyl, benzotriazolyl, benzoxazolyl, pyridinyl, tetrazolyl, dihydrothiazolyl, imidazopyridinyl, imidazolyl, indolyl, isoquinolyl, naphthoimidazolyl, naphthooxazolyl, naphthopyrazolyl, oxadiazolyl, oxazolyl, oxazolopyridyl , phenazinyl, phenooxazolyl, pyrazinyl, pyrazolyl, pyrilyl, pyrazoyltriazyl, pyridyl, pyridinoimidazolyl, pyrrolyl, quinolyl, tetrazolyl, thiadiazolyl, thiazolyl, thiazolopyridinyl, thiazoylimidazolyl, thiopyrylyl, triazolyl, xanthylyl ;
• a “ cyclic ” or “ cycloalkyl ” radical is a non-aromatic cyclic hydrocarbon radical, mono or polycyclic, condensed or not, containing from 5 to 22 carbon atoms, which may contain from 1 to several unsaturations, preferably the cycloalkyl is a cyclohexyl group ;
• a “ heterocyclic ” or “ heterocycloalkyl ” radical is a non-aromatic mono or polycyclic cyclic radical, condensed or not, containing from 3 to 9 members, comprising from 1 to 4 heteroatoms chosen from the atom of nitrogen, oxygen, sulfur and selenium, preferably the heterocycloalkyl is chosen from epoxide, piperazinyl, piperidinyl, morpholinyl, or dithiolane;
• an “ alkyl ” radical is a saturated hydrocarbon radical, linear or branched, in particular in C ₁ -C ₆ , preferably in C ₁ -C ₄ ;
• an “ alkenyl ” radical is an unsaturated hydrocarbon radical, linear or branched, comprising one or more double bonds, conjugated or not;
• an “ alkynyl ” radical is an unsaturated hydrocarbon radical, linear or branched, comprising one or more triple bonds, conjugated or not;
• an “ alkoxy ” radical is an alkyl-oxy radical for which the alkyl radical is a hydrocarbon radical, linear or branched, in C ₁ -C ₆ , preferably in C ₁ -C ₄ ;
• a “ sugar ” radical, is a monosaccharide radical, or polysaccharide, and their O-protected sugar derivatives such as esters of sugars and (C ₁ -C ₆ ) alkylcarboxylic acids such as acetic acid, sugars with (s) amine and (C ₁ -C ₄ ) alkylated derivatives, such as methylated derivatives such as methylglucose. We can cite as sugar radical: sucrose (or sucrose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose;
• by “ monosaccharide ” is meant a monosaccharide sugar comprising at least 5 carbon atoms of formula C _x (H ₂ O) _x , with x an integer greater than or equal to 5, preferably x is greater than or equal to 6, in particular x is inclusively between 5 and 7, preferably x = 6, they can be of D or L configuration, and of alpha or beta anomer, as well as their salts and their solvates such as hydrates;
• by “ polysaccharide ” is meant a polysaccharide sugar which is a polymer consisting of several oses linked together by O-saccharide bonds, said polymers being made up of monosaccharide units (also called monosaccharides) as defined above, said units monosaccharide comprising at least 5 carbon atoms, preferably 6, particularly the monosaccharide units are linked together at 1.4 or 1.6 in an α (alpha) or β(beta) anomer, each saccharide unit being able to be of L or D configuration, as well as its salts and solvates such as the hydrates of said monosaccharides; these are more particularly polymers formed from a certain number of oses (or monosaccharides) having the general formula: -[C _x (H ₂ O) _y )] _w - or -[(CH ₂ O) _x ] _w -, with x an integer greater than or equal to 5, preferably x is greater than or equal to 6, in particular x is inclusively between 5 and 7, preferably x = 6, and y an integer which represents x - 1, and w is an integer greater than or equal to 2, particularly included inclusively between 3 and 3000, more particularly between 5 and 2500, preferably between 10 and 2300, particularly included inclusively between 15 and 1000, more particularly between 20 and 500, preferably between 25 and 200;
• by “sugar with amine group(s)”, it is meant that the sugar radical is substituted by one or more amino group(s) NR ₁ R ₂ ie at least one of the hydroxy groups of at least one sugar unit of the sugar radical is replaced by an NR ₁ R ₂ group, with R ₁ and R ₂ , identical or different, representing i) a hydrogen atom, ii) a (C ₁ -C ₆ ) alkyl group, iii) an aryl group such as phenyl , iv) an aryl(C ₁ -C ₄ )alkyl group such as benzyl, vii) –C(Y)-(Y') _f -R' ₁ with Y and Y', identical or different, representing an atom of oxygen, sulfur or N(R' ₂ ), preferably oxygen, f = 0 or 1, preferably 0; and R' ₁ and R' ₂ representing i) to vi) of R ₁ and R ₂ defined previously, and in particular R' ₁ designating a (C ₁ -C ₆ ) alkyl group such as methyl. Preferably R ₁ and/or R ₂ represent a hydrogen atom, or a (C ₁ -C ₄ ) alkylcarbonyl group such as acetyl and more preferably R ₁ represents a hydrogen atom and R ₂ represents a (C ₁ -C ₄ )alkylcarbonyl such as acetyl.
• by “ organic or mineral acid salt ”, we mean more particularly the salts of organic or mineral acid in particular chosen from a salt derived from i) hydrochloric acid HCl, ii) hydrobromic acid HBr, iii) sulfuric acid H ₂ SO ₄ , iv) alkylsulfonic acids: Alk-S(O) ₂ OH such as methylsulfonic acid and ethylsulfonic acid; v) arylsulfonic acids: Ar-S(O) ₂ OH such as benzene sulfonic acid and toluene sulfonic acid; vi) alkoxysulfinic acids: Alk-OS(O)OH such as methoxysulfinic acid and ethoxysulfinic acid; vii) aryloxysulfinic acids such as tolueneoxysulfinic acid and phenoxysulfinic acid; viii) phosphoric acid H ₃ PO ₄ ; ix) triflic acid CF ₃ SO ₃ H and x) tetrafluoroboric acid HBF ₄ ; xi) organic carboxylic acids R°-C(O)-OH (I'z) formula (I'z) in which R° represents a (hetero)aryl group such as phenyl, (hetero)aryl(C ₁ - C ₄ )alkyl such as benzyl, or (C ₁ -C ₁₀ )alkyl said alkyl group being optionally substituted preferably by one or more hydroxy groups, amino radicals, or carboxy, R° preferably designating a group (C ₁ -C ₆ ) alkyl optionally substituted by 1, 2 or 3 hydroxy, or carboxy groups, more preferably the monocarboxylic acids of formula (I'z) are chosen from acetic acid, glycolic acid, lactic acid, and mixtures thereof , and more particularly among acetic acid and lactic acid; and the polycarboxylic acids are chosen from tartaric acid, succinic acid, fumaric acid, citric acid and mixtures thereof; and xii) amino acids containing more carboxylic acid radicals than amino groups such as gamma-carboxyglutamic acid, aspartic acid, glutamic acid, in particular gamma-carboxyglutamic acid;
• A "anionic counterion» is an anion or an anionic group associated with the cationic charge; more particularly the anionic counterion is chosen from i) halides such as chloride, bromide; ii) nitrates; iii) sulfonates including C₁-VS₆alkylsulfonates: Alk-S(O)₂O^-such as methylsulfonate or mesylate and ethylsulfonate; iv) arylsulfonates: Ar-S(O)₂O^-such as benzenesulfonate and toluenesulfonate or tosylate; v) citrate; vi) succinate; vii) tartrate; viii) lactate; ix) alkyl sulfates: Alk-O-S(O)O^-such as methyl sulfate and ethyl sulfate; x) arylsulfates: Ar-O-S(O)O^-such as benzenesulfate and toluenesulfate; xi) alkoxy sulfates: Alk-O-S(O)₂O^-such as methoxy sulfate and ethoxy sulfate; xii) aryloxy sulfates: Ar-O-S(O)₂O^-, xiii) phosphate; xiv) acetate; xv) triflate; and xvi) borates such as tetrafluoroborate.
• The “ solvates ” represent the hydrates as well as the association with linear or branched linear or branched C ₁ -C ₄ alcohols such as ethanol, isopropanol, n-propanol;
• by “ chromophore ” is meant a radical originating from a colorless or colored compound capable of absorbing UV and/or visible radiation at a wavelength λ _abs of between 250 and 800 nm; Preferably the chromophore is colored ie it absorbs wavelengths in the visible ie preferably between 400 and 800 nm. Preferably chromophores appear colored to the eye; particularly between 400 and 700 nm ( Ullmann's Encyclopedia , 2005, Wiley-VcH, Verlag “Dyes, General Survey”, § 2.1 Basic Principle of Color);
• by “ fluorescent chromophore ” we mean a chromophore which is also capable of re-emitting in the visible range at an emission wavelength λ _em between 400 and 800 nm, and greater than the absorption wavelength . Preferably with a Stoke shift the difference between the maximum absorption wavelength and the emission wavelength is at least 10 nm. Preferably fluorescent chromophores come from fluorescent dyes capable of absorbing in the visible λ _abs ie at a wavelength between 400 and 800 nm and re-emitting in the visible λ _em between 400 and 800 nm. More preferably, the fluorescent chromophores are capable of absorbing at a λ _abs between 420 nm and 550 nm and re-emitting in the visible at a λ _em between 470 and 600 nm.
• by “ brightener chromophore ” is meant a chromophore derived from an optical brightener compound or “ Optical brighteners, optical brightening agents (OBAs)” or “fluorescent brightening agents (FBAs)”, or “fluorescent whitening agents (FWAs) » ie which absorbs UV radiation ie at a wavelength λ _abs between 250 and 350 nm wavelength and then re-emits this energy by fluorescence in the visible at a wavelength of emission λ _em between 400 and 600 nm, i.e. the wavelengths between blue-violet and blue-green with a maximum in the blue. Optical brightener chromophores are therefore colorless to the eye.
• By “ UV-A filter ” we mean a chromophore derived from a compound which filters (or absorbs) UV-A ultraviolet rays at a wavelength between 320 and 400 nm. We can distinguish between short UV-A filters (absorbing rays at a wavelength between 320 and 340 nm), and long UV-A filters (absorbing rays at a wavelength between 340 and 400 nm).
• By “UV-B filter ” we mean a chromophore derived from a compound which filters (or absorbs) UV-B ultraviolet rays at a wavelength between 280 and 320 nm.

Furthermore, unless otherwise indicated, the limits delimiting the extent of a range of values are included in this range of values.

a) The PHA copolymer(s)

The composition C1 or C'1 of the invention comprises as first ingredient a) one or more PHA copolymer(s) which contain, or preferably consist of, at least two different polymeric units repeating units (A) as defined previously.

According to a particular embodiment of the invention the composition according to the invention the composition C1 is C1' and comprises as first ingredient a) one or more PHA copolymer(s) which contains, or preferably consisting of, at least two different repeating polymeric units chosen from units (A) and (B) as defined previously.

• R ¹ représente une chaine hydrocarbonée, non cyclique saturée ou insaturée, linéaire ou ramifiée, ou cyclique saturée ou insaturée aromatique ou non aromatique, comprenant de 5 à 28 atomes de carbones, particulièrement une chaine hydrocarbonée choisie parmi i) (C₅-C₂₈)alkyle, linéaire ou ramifié, ii) (C₅-C₂₈)alkényle, linéaire ou ramifié, iii) (C₅-C₂₈)alkynyle, linéaire ou ramifié, de préférence le groupe hydrocarboné est linéaire ;

ladite chaine hydrocarbonée étant :

• éventuellement substituée par un ou plusieurs atomes ou groupes choisis parmi : a) halogène tels que chlore ou brome, b) hydroxy, c) thiol, d) (di)(C₁-C₄)(alkyl)amino, e) (thio)carboxy, f) (thio)carboxamide –C(O)-N(R_a)₂ou –C(S)-N(R_a)₂, g) cyano, h) iso(thio)cyanate, i) (hétéro)aryle tel que phényl ou furyl, et j) (hétéro)cycloalkyle tel que anhydride, époxyde ou dithiolane, k) actif cosmétique ; l) R-X avecRreprésentant un groupe choisi parmi α) cycloalkyle tel que cyclohexyle, β) hétérocycloalkyle tel que sucre de préférence monosaccharide tel que glucose, γ) (hétéro)aryle tel que phényle, δ) actif cosmétique, m) thiosulfate et X représentant a’) O, S, N(R_a) ou Si(R_b)(R_c), b’) S(O)_r, ou (thio)carbonyle, c’) ou les associations de a’) avec b’) tels que (thio)ester, (thio)amide, (thio)urée, sulfonamide ;R _a représentant un atome d’hydrogène, ou un groupe (C₁-C₄)alkyle, ou aryl(C₁-C₄)alkyle tel que benzyle, de préférence R_areprésente un atome d’hydrogène ;R _b etR _c , identiques ou différents, représentent un groupe (C₁-C₄)alkyle ou (C₁-C₄)alkoxy particulièrement un seul substituant ; de préférence choisi parmi b) halogène, et j) tel que epoxide ; et/ou
• éventuellement interrompue par un ou plusieurs a’) hétéroatomes tels que O, S, N(R_a), et Si(R_b)(R_c), b’) S(O)_r, (thio)carbonyle, c’) ou les associations de a’) avec b’) tels que (thio)ester, (thio)amide, (thio)urée, sulfonamide avecrvalant 1 ou 2,R _a étant tel que défini précédemment, de préférenceR _a représente un atome d’hydrogène,R _b etR _c , étant tels que définis précédemment ;
• R ² représente un groupe hydrocarboné, cyclique ou non cyclique, linéaire ou ramifiée, saturé ou insaturé, comprenant de 3 à 30 atomes de carbone éventuellement substituée par un ou plusieurs atomes ou groupes a) à m) et/ou éventuellement intérrompu par un ou plusieurs hétéroatomes ou groupes a’) à c’) tels que défini pour R¹; en particulier choisi parmi (C₃-C₂₈)alkyle, linéaire ou ramifié, et (C₃-C₂₈)alkényle linéaire ou ramifié, en particulier un groupe hydrocarboné linéaire, plus particulièrement (C₄-C₂₀)alkyle ou (C₄-C₂₀)alkényle, de préférence le groupe hydrocarboné possède un nombre de carbone correspondant au nombre d’atomes de carbone du radicalR ¹ auquel on retranche au moins un atome de carbone, de préférence correspondant au nombre d’atomes de carbone du radicalR ¹ auquel on retranche deux atomes de carbone ; et

b) un ou plusieurs polysaccharide(s) modifié(s) ; et
c) éventuellement un ou plusieurs corps gras ; de préférence liquides à 25 °C et à pression atmosphérique; et
d) éventuellement un ou plusieurs solvant(s) organique(s) différent(s) de c) ;
e) éventuellement de l’eau,
étant entendu que :

• (A)est différent de(B)et
• la composition C’1 contient c) un ou plusieurs corps gras et/ou e) de l’eau, de préférence c). Plus particulièrement c) et d)

Preferably the composition C1 of the invention is a composition C1', preferably cosmetic comprising: a) one or more polyhydroxyalkanoate copolymer(s) (PHA) which contains and preferably consists of at least two polymeric units different repeats chosen from the units(HAS)And(B)following, as well as their optical and geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates:
-[-O-CH(R¹)-CH₂-C(O)-]- unit(HAS)
-[-O-CH(R²)-CH₂-C(O)-]- unit(B)
polymeric units(HAS)And(B)in which :

• R ¹ represents a hydrocarbon chain, non-cyclic saturated or unsaturated, linear or branched, or cyclic saturated or unsaturated aromatic or non-aromatic, comprising from 5 to 28 carbon atoms, particularly a hydrocarbon chain chosen from i) (C ₅ -C ₂₈ )alkyl, linear or branched, ii) (C ₅ -C ₂₈ )alkenyl, linear or branched, iii) (C ₅ -C ₂₈ )alkynyl, linear or branched, preferably the hydrocarbon group is linear;

said hydrocarbon chain being:

• optionally substituted by one or more atoms or groups chosen from: a) halogen such as chlorine or bromine, b) hydroxy, c) thiol, d) (di)(C ₁ -C ₄ )(alkyl)amino, e) (thio )carboxy, f) (thio)carboxamide –C(O)-N(R _a ) ₂ or –C(S)-N(R _a ) ₂ , g) cyano, h) iso(thio)cyanate, i) ( hetero)aryl such as phenyl or furyl, and j) (hetero)cycloalkyl such as anhydride, epoxide or dithiolane, k) cosmetic active ingredient; l) RX with R representing a group chosen from α) cycloalkyl such as cyclohexyl, β) heterocycloalkyl such as sugar preferably monosaccharide such as glucose, γ) (hetero)aryl such as phenyl, δ) cosmetic active ingredient, m) thiosulfate and representing a') O, S, N(R _a ) or Si(R _b )(R _c ), b') S(O) _r , or (thio)carbonyl, c') or the associations of a') with b') such as (thio)ester, (thio)amide, (thio)urea, sulfonamide; R _a representing a hydrogen atom, or a (C ₁ -C ₄ )alkyl group, or aryl (C ₁ -C ₄ )alkyl such as benzyl, preferably R _a represents a hydrogen atom; R _b and R _c , identical or different, represent a (C ₁ -C ₄ ) alkyl or (C ₁ -C ₄ ) alkoxy group, particularly a single substituent; preferably chosen from b) halogen, and j) such as epoxide; and or
• optionally interrupted by one or more a') heteroatoms such as O, S, N(R _a ), and Si(R _b )(R _c ), b') S(O) _r , (thio)carbonyl, c') or the associations of a') with b') such as (thio)ester, (thio)amide, (thio)urea, sulfonamide with r being 1 or 2, R _a being as defined above, preferably R _a represents a hydrogen atom, R _b and R _c , being as defined above;
• R ² represents a hydrocarbon group, cyclic or non-cyclic, linear or branched, saturated or unsaturated, comprising from 3 to 30 carbon atoms optionally substituted by one or more atoms or groups a) to m) and/or optionally interrupted by one or more heteroatoms or groups a') to c') as defined for R¹; in particular chosen from (C₃-VS₂₈)alkyl, linear or branched, and (C₃-VS₂₈) linear or branched alkenyl, in particular a linear hydrocarbon group, more particularly (C₄-VS₂₀)alkyl or (C₄-VS₂₀)alkenyl, preferably the hydrocarbon group has a carbon number corresponding to the number of carbon atoms of the radicalR ¹ from which at least one carbon atom is subtracted, preferably corresponding to the number of carbon atoms of the radicalR ¹ from which two carbon atoms are subtracted; And

b) one or more modified polysaccharide(s); And
c) possibly one or more fatty substances; preferably liquid at 25°C and atmospheric pressure; And
d) optionally one or more organic solvent(s) different from c);
e) possibly water,
Being heard that :

• (A) is different from (B) and
• the composition C'1 contains c) one or more fatty substances and/or e) water, preferably c). More particularly c) and d)

preferably composition C’1 contains ingredients c) + d) + e).

By “ co-polymer ” we mean that said polymer comes from the polycondensation of repeating polymer units different from each other, ie said polymer comes from the polycondensation of repeating polymer units (A) different from each other, or from the polycondensation of 'polymeric repeating unit (A) with (B) it being understood that the polymeric units (A) are different from the polymeric units (B) said copolymer can be obtained from a single saturated or unsaturated aliphatic carbon source optionally substituted and/ or interrupted preferably unsubstituted uninterrupted, or from several carbon sources, in particular at least one of which is saturated aliphatic unsubstituted uninterrupted and the other carbon source(s) being saturated or unsaturated aliphatic optionally substituted in particular by a halogen atom such as bromine, or by a cyano group, a bunte salt, a dithiolane radical, a carboxy etc.

According to one embodiment, the copolymer according to the invention comes from a single carbon source, preferably a single saturated or unsaturated aliphatic carbon source optionally substituted and/or interrupted, preferably unsubstituted uninterrupted.

According to one embodiment, the copolymer according to the invention comes from several carbon sources, preferably from 2 to 10 carbon sources, more preferably 2 to 5 carbon sources, even more preferably 2 carbon sources.

According to one embodiment, the copolymer according to the invention comes from several carbon sources and at least one is saturated aliphatic. According to a particular embodiment of the invention, the PHA copolymer(s) consist(s) of two different repeating polymeric units chosen from units (A) and (B) as defined above.

According to a particular embodiment of the invention, the PHA copolymer(s) comprise, preferably consist of, two different repeating polymeric units chosen from the units (A) as previously defined, the units (B) such asR ² represents a hydrocarbon group, cyclic or non-cyclic, linear or branched, saturated or unsaturated, comprising from 3 to 30 carbon atoms; in particular chosen from (C₃-VS₂₈)alkyl, linear or branched, and (C₃-VS₂₈) linear or branched alkenyl, in particular a linear hydrocarbon group, more particularly (C₄-VS₂₀)alkyl or (C₄-VS₂₀)alkenyl, preferably the hydrocarbon group has a carbon number corresponding to the number of carbon atoms of the radicalR ¹ from which at least one carbon atom is subtracted, preferably corresponding to the number of carbon atoms of the radicalR ¹ from which two carbon atoms are subtracted.

More particularly, the PHA copolymer(s) according to the invention comprise the repeating unit of formula (I), as well as their optical, geometric isomers, their organic or mineral acid or base salts, and their solvates such as hydrates:

• R ¹ etR ² sont tels que défini précédemment ;
• metnsont des entiers supérieurs ou égal à 1, de préférence la somme n + m est compris inclusivement entre 450 et 1400,

de préférence m > n lorsqueR ¹ etR ² représentent un groupe alkyle non substitué et non intérrompu – plus préférentiellement lorsque R¹et R²sont alkyle linéaire alors R¹est un groupe alkyle en C₅-C₁₃; et R²représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 2 atomes de carbone tel qu’un groupe alkyle en C₃-C₁₁; et
de préférence m < n lorsqueR ¹ représente un groupe alkyle substitué et/ou intérrompu, alkényle éventuellement substitué et/ou intérrompu ou alkynyle éventuellement substitué et/ou intérrompu, etR ² représente un groupe alkyle.[Chem. 1]:
Formula (I) in which:

• R ¹ and R ² are as defined previously;
• m and n are integers greater than or equal to 1, preferably the sum n + m is inclusively between 450 and 1400,

preferably m > n when R ¹ and R ² represent an unsubstituted and uninterrupted alkyl group – more preferably when R ¹ and R ² are linear alkyl then R ¹ is a C ₅ -C ₁₃ alkyl group; and R ² represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which 2 carbon atoms are subtracted such as a C ₃ -C ₁₁ alkyl group; And
preferably m < n when R ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or interrupted alkenyl or optionally substituted and/or interrupted alkynyl, and R ² represents an alkyl group.

• R ¹ , etR ² sont tels que définis précédemment ;
• R ³ représente un groupe hydrocarboné, cyclique ou non cyclique, linéaire ou ramifiée, saturé ou insaturé, comprenant de 1 à 30 atomes de carbone éventuellement substitué par un ou plusieurs atomes ou groupes a) à m) et/ou éventuellement intérrompu par un ou plusieurs hétéroatomes ou groupes a’) à c’) tels que défini pour R¹; en particulier représente un groupe hydrocarboné choisi parmi (C₁-C₂₈)alkyle, linéaire ou ramifié, et (C₂-C₂₈)alkényle linéaire ou ramifié, en particulier un groupe hydrocarboné linéaire, plus particulièrement (C₄-C₂₀)alkényle, de préférence le groupe hydrocarboné possède un nombre de carbone correspondant au nombre d’atomes de carbone du radical R¹, ou alors correspondant au nombre d’atomes de carbone du radical R¹auquel on retranche au moins trois atomes de carbone, de préférence correspondant au nombre d’atomes de carbone du radical R¹auquel on retranche quatre atomes de carbone ; et

étant entendu que :

• (A)est différent de(B)et(C),(B)est différent de(A)et(C),et(C)est différent de(A)et(B); et
• de préférence lorsqueR ¹ ,R ² etR ² représentent un groupe alkyle non substitué et non intérrompu le pourcentage molaire en unité(A)est supérieur au pourcentage molaire en unité(B),et le pourcentage molaire en unité(B)est supérieur au pourcentage molaire en unité(C)– plus préférrentiellement lorsque R¹, R²et R³sont alkyle linéaire, alors R¹est un groupe alkyle en C₅-C₁₃; et R²représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 2 atomes de carbone, et R³représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 4 atomes de carbone,et
• de préférence lorsqueR ¹ représente un groupe alkyle substitué et/ou intérrompu, alkényle éventuellement substitué et/ou éventuellement intérrompu ou alkynyle éventuellement substitué et/ou éventuellement intérrompu, alors le pourcentage molaire en unité(A)est inférieur au pourcentage molaire en unité(B)et le pourcentage molaire en unité(C)est inférieur au pourcentage molaire en unité(B)notamment si R²représente un groupe alkyle et/ou R³représentent un groupe alkyle.

According to a particular embodiment, the PHA copolymer(s) of composition a) contain three different repeating polymeric units(HAS),(B)And(VS), preferably consists of 3 different polymer units(HAS),(B)And(VS)following, as well as their optical and geometric isomers and their solvates such as hydrates:
-[-O-CH(R¹)-CH₂-C(O)-]- unit(HAS)
-[-O-CH(R²)-CH₂-C(O)-]- unit(B)
-[-O-CH(R³)-CH₂-C(O)-]- unit(VS)
polymeric units(HAS),(B)And(VS)in which :

• R ¹ , and R ² are as defined previously;
• R ³ represents a hydrocarbon group, cyclic or non-cyclic, linear or branched, saturated or unsaturated, comprising from 1 to 30 carbon atoms optionally substituted by one or more atoms or groups a) to m) and/or optionally interrupted by one or several heteroatoms or groups a') to c') as defined for R ¹ ; in particular represents a hydrocarbon group chosen from (C ₁ -C ₂₈ ) alkyl, linear or branched, and (C ₂ -C ₂₈ ) linear or branched alkenyl, in particular a linear hydrocarbon group, more particularly (C ₄ -C ₂₀ ) alkenyl, preferably the hydrocarbon group has a number of carbons corresponding to the number of carbon atoms of the radical R ¹ , or corresponding to the number of carbon atoms of the radical R ¹ from which at least three carbon atoms are subtracted, preference corresponding to the number of carbon atoms of the radical R ¹ from which four carbon atoms are subtracted; And

Being heard that :

• (A) is different from (B) and (C) , (B) is different from (A) and (C), and (C) is different from (A) and (B) ; And
• preferably when R ¹ , R ² and R ² represent an unsubstituted and uninterrupted alkyl group, the mole percentage in units (A) is greater than the molar percentage in units (B), and the molar percentage in units (B) is greater to the molar percentage in units (C) – more preferably when R ¹ , R ² and R ³ are linear alkyl, then R ¹ is a C ₅ -C ₁₃ alkyl group; and R ² represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which 2 carbon atoms are subtracted, and R ³ represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which we subtract 4 carbon atoms , and
• preferably whenR ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group, then the molar percentage in unit(HAS)is less than the mole percentage in unit(B)and the mole percentage in unit(VS)is less than the mole percentage in unit(B)especially if R²represents an alkyl group and/or R³represent an alkyl group.

According to a particular embodiment of the invention, the PHA copolymer(s) comprise the repeating unit of formula (II), as well as their optical, geometric isomers, their acid or base, organic or mineral salts, and their solvates. such as hydrates:

• R ¹ ,R ² etR ³ , sont tels que défini précédemment ;
• m,netp,sont des entiers supérieurs ou égal à 1, de préférence la somme n + m + p est compris inclusivement entre 450 et 1400 ; et

• de préférence m > n + p lorsqueR ¹ ,R ² etR ³ représentent un groupe alkyle non substitué et non intérrompu - plus préférentiellement lorsque R¹, R²et R³sont alkyle linéaire, alors R¹est un groupe alkyle en C₅-C₁₃; et R²représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustraite 2 atomes de carbone tel qu’un groupe alkyle en C₃-C₁₁, et R³représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustraite 4 atomes de carbone tel qu’un groupe alkyle en C₁-C₉; et
• de préférence m < n + p lorsqueR ¹ représente un groupe alkyle substitué et/ou intérrompu, alkényle éventuellement substitué et/ou éventuellement intérrompu ou alkynyle éventuellement substitué et/ou éventuellement intérrompu, etR ² etR ³ représentent un groupe alkyle.

[Chem. 2]:
Formula (II) in which:

• R ¹ , R ² and R ³ are as defined above;
• m , n and p, are integers greater than or equal to 1, preferably the sum n + m + p is inclusively between 450 and 1400; And

• preferably m > n + p when R ¹ , R ² and R ³ represent an unsubstituted and uninterrupted alkyl group - more preferably when R ¹ , R ² and R ³ are linear alkyl, then R ¹ is a C alkyl group ₅ -C ₁₃ ; and R ² represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which 2 carbon atoms are subtracted such as a C ₃ -C ₁₁ alkyl group, and R ³ represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which 4 carbon atoms are subtracted such as a C ₁ -C ₉ alkyl group; And
• preferably m < n + p when R ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl, and R ² and R ³ represent an alkyl group.

• R ¹ ,R ² etR ³ sont tels que définis précédemment ;
• R ⁴ représente un groupe hydrocarboné, cyclique ou non cyclique, linéaire ou ramifié, saturé comprenant de 3 à 30 atomes de carbone éventuellement substituée par un ou plusieurs atomes ou groupes a) à m) et/ou éventuellement intérrompu par un ou plusieurs hétéroatomes ou groupes a’) à c’) tels que défini pour R¹; en particulier représente un groupe hydrocarboné choisi parmi (C₄-C₂₈)alkyle, linéaire ou ramifié éventuellement substitué par un ou plusieurs atomes ou groupes a) à m) et/ou intérrompu par un ou plusiuers hétéroatomes ou groupes a’) à c’) tels que défini pour R¹; et

étant entendu que :

• (A)est différent de(B),(C)et(D),(B)est différent de(A),(C)et(D),et(C)est différent de(A),(B)et(D); et(D)est différent de(A),(B)et(C); et
• de préférence lorsqueR ¹ ,R ² ,R ³ etR ⁴ représentent un groupe alkyle non substitué et non intérrompu le pourcentage molaire en unité(A)est supérieur au pourcentage molaire en unité(B),supérieur au pourcentage molaire en unité(C),et supérieur au pourcentage molaire en unité(D) -plus préférentiellement lorsque R¹, R², R³et R⁴sont alkyle linéaire, alors R¹est un groupe alkyle en C₅-C₁₃; et R²représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 2 atomes de carbone tel qu’un groupe alkyle en C₃-C₁₁, R³représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 4 atomes de carbone tel qu’un groupe alkyle en C₁-C₉, et R⁴représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 6 atomes de carbone,et
• de préférence lorsqueR ¹ représente un groupe alkyle substitué et/ou intérrompu, alkényle éventuellement substitué et/ou éventuellement intérrompu ou alkynyle éventuellement substitué et/ou éventuellement intérrompu, alors le pourcentage molaire en unité(A)est inférieur au pourcentage molaire en unité(B),le pourcentage molaire en unité(C)est inférieur au pourcentage molaire en unité(B),notamment siR ² représente un groupe alkyle et/ouR ³ représentent un groupe alkyle, etR ⁴ représente un groupe alkyle éventuellement substitué et/ou éventuellement intérrompu, alkényle éventuellement substitué et/ou éventuellement intérrompu ou alkynyle éventuellement substitué et/ou éventuellement intérrompu.

According to a particular embodiment, the PHA copolymer(s) of composition a) contain four different repeating polymeric units(HAS),(B),(VS), And(D)preferably consists of 4 different polymer units(HAS),(B),(VS), And(D), following, as well as their optical, geometric isomers and their acid or base, organic or mineral salts, as well as their solvates such as hydrates:
-[-O-CH(R¹)-CH₂-C(O)-]- unit(HAS)
-[-O-CH(R²)-CH₂-C(O)-]- unit(B)
-[-O-CH(R³)-CH₂-C(O)-]- unit(VS)
-[-O-CH(R⁴)-CH₂-C(O)-]- unit(D)
polymeric units(HAS),(B),(VS)And(D)in which :

• R ¹ ,R ² AndR ³ are as defined above;
• R ⁴ represents a hydrocarbon group, cyclic or non-cyclic, linear or branched, saturated comprising from 3 to 30 carbon atoms optionally substituted by one or more atoms or groups a) to m) and/or optionally interrupted by one or more heteroatoms or groups a') to c') as defined for R ¹ ; in particular represents a hydrocarbon group chosen from (C ₄ -C ₂₈ ) alkyl, linear or branched optionally substituted by one or more atoms or groups a) to m) and/or interrupted by one or more heteroatoms or groups a') to c ') as defined for R ¹ ; And

Being heard that :

• (A) is different from (B) , (C) and (D) , (B) is different from (A) , (C) and (D), and (C) is different from (A) , (B) and D) ; and (D) is different from (A) , (B) and (C) ; And
• preferably when R ¹ , R ² , R ³ and R ⁴ represent an unsubstituted and uninterrupted alkyl group, the mole percentage in units (A) is greater than the molar percentage in units (B), greater than the molar percentage in units (C ), and greater than the molar percentage in units (D) - more preferably when R ¹ , R ² , R ³ and R ⁴ are linear alkyl, then R ¹ is a C ₅ -C ₁₃ alkyl group; and R ² represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which 2 carbon atoms are subtracted such as a C ₃ -C ₁₁ alkyl group, R ³ represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which 4 carbon atoms are subtracted such as a C ₁ -C ₉ alkyl group, and R ⁴ represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which we subtract 6 carbon atoms , and
• preferably whenR ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group, then the molar percentage in unit(HAS)is less than the mole percentage in unit(B),THE mole percentage in unit(VS)is less than the mole percentage in unit(B),especially ifR ² represents an alkyl group and/orR ³ represent an alkyl group, andR ⁴ represents an optionally substituted and/or optionally interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group.

According to a particular embodiment of the invention, the PHA copolymer(s) comprise the repeating unit of formula (III), as well as their optical, geometric isomers, their acid or base, organic or mineral salts, and their solvates. such as hydrates:

• R ¹ ,R ² ,R ³ , etR ⁴ sont tels que défini précédemment ;
• m,n, p,etvsont des entiers supérieurs ou égal à 1,

• de préférence la somme n + m + p + v est compris inclusivement entre 450 et 1400 et;
• de préférence lorsqueR ¹ ,R ² ,R ³ etR ⁴ représentent un groupe alkyle non substitué et non intérrompu alors m > n + p + q-plus préférrentiellement lorsque R¹, R², R³et R⁴sont alkyle linéaire, alors R¹est un groupe alkyle en C₅-C₁₃; et R²représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 2 atomes de carbone, R³représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 4 atomes de carbone, et R⁴représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 6 atomes de carbone ; et
• de préférence lorsqueR ¹ représente un groupe alkyle substitué et/ou intérrompu, alkényle éventuellement substitué et/ou éventuellement intérrompu ou alkynyle éventuellement substitué et/ou éventuellement intérrompu, etR ² etR ³ représentent un groupe alkyle, etR ⁴ représente un groupe un groupe alkyle substitué et/ou intérrompu, alkényle éventuellement substitué et/ou éventuellement intérrompu ou alkynyle éventuellement substitué et/ou éventuellement intérrompu alors n > m + v ; plus préférentiellement n + p > m + v .

[Chem. 3]:

Formula(III)in which :

• R ¹ , R ² , R ³ , and R ⁴ are as defined above;
• m , n, p, and v are integers greater than or equal to 1,

• preferably the sum n + m + p + v is inclusively between 450 and 1400 and;
• preferably when R ¹ , R ² , R ³ and R ⁴ represent an unsubstituted and uninterrupted alkyl group then m > n + p + q - more preferably when R ¹ , R ² , R ³ and R ⁴ are linear alkyl, then R ¹ is a C ₅ -C ₁₃ alkyl group; and R ² represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ to which 2 carbon atoms are subtracted, R ³ represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ to which 4 carbon atoms are subtracted, and R ⁴ represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which 6 carbon atoms are subtracted; And
• preferably whenR ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group, andR ² AndR ³ represent an alkyl group, andR ⁴ represents a group a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group then n > m + v; more preferably n + p > m + v.

• R ¹ ,R ² ,R ³ etR ⁴ sont tels que définis précédemment ; et
• R ⁵ représente un groupe hydrocarboné, cyclique ou non cyclique, linéaire ou ramifiée, saturé comprenant de 3 à 30 atomes de carbone éventuellement substituée par un ou plusieurs atomes ou groupes a) à m) et/ou éventuellement intérrompu par un ou plusiuers hétéroatomes ou groupes a’) à c’) tels que défini pour R¹; en particulier représente un groupe hydrocarboné choisi parmi (C₄-C₂₈)alkyle, linéaire ou ramifié éventuellement substituée par un ou plusieurs atomes ou groupes a) à m) et/ou intérrompu par un ou plusieurs hétéroatomes ou groupes a’) à c’) tels que défini pour R¹, de préférence le groupe hydrocarboné possède un nombre de carbone correspondant au nombre d’atomes de carbone du radical R⁴auquel on retranche au moins un atome de carbone, de préférence correspondant au nombre d’atomes de carbone du radical R⁴auquel on retranche au moins 2 atomes de carbone, de préférence auquel on retranche 2 atomes de carbone ;

étant entendu que :

• (A)est différent de(B),(C), (D)et(E);(B)est différent de(A),(C), (D)et(E),et(C)est différent de(A),(B), (D)et(E);(D)est différent de(A),(B), (C)et(E); et(E)est différent de(A),(B), (C)et(D); et
• de préférence lorsqueR ¹ ,R ² ,R ³ ,R ⁴ etR ⁵ représentent un groupe alkyle non substitué et non intérrompu le pourcentage molaire en unité(A)est supérieur au pourcentage molaire en unité(B),supérieur au pourcentage molaire en unité(C),et supérieur au pourcentage molaire en unité(D),supérieur au pourcentage molaire en unité(E) -plus préférentiellement lorsque R¹, R², R³, R⁴et R⁵sont alkyle linéaire, alors R¹est un groupe alkyle en C₅-C₁₃; et R²représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 2 atomes de carbone, R³représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 4 atomes de carbone, R⁴représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 6 atomes de carbone, et R⁵représente un groupe alkyle linéaire avec un nombre de carbone correspondant au nombre de carbone de R¹auquel on soustrait 8 atomes de carbone,et
• de préférence lorsqueR ¹ représente un groupe alkyle substitué et/ou intérrompu, alkényle éventuellement substitué et/ou éventuellement intérrompu ou alkynyle éventuellement substitué et/ou éventuellement intérrompu, alors le pourcentage molaire en unité(A)est inférieur au pourcentage molaire en unité(B),et le pourcentage molaire en unité(C)est inférieur au pourcentage molaire en unité(B),notamment siR ² représente un groupe alkyle et/ouR ³ représente un groupe alkyle, etR ⁴ etR ⁵ représentent un groupe alkyle substitué et/ou intérrompu, alkényle éventuellement substitué et/ou éventuellement intérrompu ou alkynyle éventuellement substitué et/ou éventuellement intérrompu.

According to one embodiment more particularly the PHA copolymer(s) of composition a) contain five different repeating polymeric units(HAS),(B),(VS),(D), And(E)preferably consists of 5 different polymer units(HAS),(B),(VS),(D), And(E)following, as well as their optical, geometric isomers and their acid or base, organic or mineral salts, as well as their solvates such as hydrates:
-[-O-CH(R¹)-CH₂-C(O)-]- unit(HAS)
-[-O-CH(R²)-CH₂-C(O)-]- unit(B)
-[-O-CH(R³)-CH₂-C(O)-]- unit(VS)
-[-O-CH(R⁴)-CH₂-C(O)-]- unit(D)
-[-O-CH(R⁵)-CH₂-C(O)-]- unit(E)
polymeric units(HAS),(B),(C), (D)And(E)in which :

• R ¹ ,R ² ,R ³ AndR ⁴ are as defined above; And
• R ⁵ represents a hydrocarbon group, cyclic or non-cyclic, linear or branched, saturated comprising from 3 to 30 carbon atoms optionally substituted by one or more atoms or groups a) to m) and/or optionally interrupted by one or more heteroatoms or groups a') to c') as defined for R ¹ ; in particular represents a hydrocarbon group chosen from (C ₄ -C ₂₈ ) alkyl, linear or branched optionally substituted by one or more atoms or groups a) to m) and/or interrupted by one or more heteroatoms or groups a') to c ') as defined for R ¹ , preferably the hydrocarbon group has a number of carbons corresponding to the number of carbon atoms of the radical R ⁴ from which at least one carbon atom is subtracted, preferably corresponding to the number of atoms of carbon of the radical R ⁴ from which at least 2 carbon atoms are removed, preferably from which 2 carbon atoms are removed;

Being heard that :

• (A) is different from (B) , (C), (D) and (E) ; (B) is different from (A) , (C), (D) and (E), and (C) is different from (A) , (B), (D) and (E) ; (D) is different from (A) , (B), (C) and (E) ; and (E) is different from (A) , (B), (C) and (D) ; And
• preferably whenR ¹ ,R ² ,R ³ ,R ⁴ AndR ⁵ represent an unsubstituted and uninterrupted alkyl group the molar percentage in unit(HAS)is greater than the mole percentage in units(B),greater than the mole percentage in unit(VS),and greater than the mole percentage in unit(D),greater than the mole percentage in unit(E) -more preferentially when R¹,R²,R³, R⁴and R⁵are linear alkyl, then R¹is a C alkyl group₅-VS₁₃; and R²represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 2 carbon atoms, R³represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 4 carbon atoms, R⁴represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 6 carbon atoms, and R⁵represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 8 carbon atoms,And
• preferably whenR ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group, then the molar percentage in unit(HAS)is less than the mole percentage in unit(B),and the mole percentage in unit(VS)is less than the mole percentage in unit(B),especially ifR ² represents an alkyl group and/orR ³ represents an alkyl group, andR ⁴ AndR ⁵ represent a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group.

According to a particular embodiment of the invention, the PHA copolymer(s) comprise the repeating unit of formula (IV), as well as their optical, geometric isomers, their acid or base, organic or mineral salts, and their solvates. such as hydrates:

• R ¹ ,R ² ,R ³ ,R ⁴ etR ⁵ sont tels que définis précédemment ;
• m,n, p, vetzsont des entiers supérieurs ou égal à 1, de préférence la somme n + m + p + v + z est compris inclusivement entre 450 et 1400 ; et

• de préférence lorsqueR ¹ ,R ² ,R ³ ,R ⁴ etR ⁵ représentent un groupe alkyle non substitué et non intérrompu alors m > n + p + v + z ;
• de préférence lorsqueR ¹ représente un groupe alkyle substitué et/ou intérrompu ; alkényle éventuellement substitué et/ou éventuellement intérrompu ; ou alkynyle éventuellement substitué et/ou éventuellement intérrompu,R ² etR ³ représentent un groupe alkyle et les groupesR ⁴ etR ⁵ représentent un groupe alkyle substitué et/ou intérrompu ; alkényle éventuellement substitué et/ou éventuellement intérrompu ; ou alkynyle éventuellement substitué et/ou éventuellement intérrompu, alors n > m + v + z; plus préférentiellement n + p > m + v + z .

[Chem. 4]:

Formula(IV)in which :

• R ¹ , R ² , R ³ , R ⁴ and R ⁵ are as defined above;
• m , n, p, v and z are integers greater than or equal to 1, preferably the sum n + m + p + v + z is inclusively between 450 and 1400; And

• preferably when R ¹ , R ² , R ³ , R ⁴ and R ⁵ represent an unsubstituted and uninterrupted alkyl group then m > n + p + v + z;
• preferably whenR ¹ represents a substituted and/or interrupted alkyl group; optionally substituted and/or optionally interrupted alkenyl; or optionally substituted and/or optionally interrupted alkynyl,R ² AndR ³ represent an alkyl group and the groupsR ⁴ AndR ⁵ represent a substituted and/or interrupted alkyl group; optionally substituted and/or optionally interrupted alkenyl; or optionally substituted and/or optionally interrupted alkynyl, then n > m + v + z; more preferably n + p > m + v + z.

Preferably R ¹ represents a hydrocarbon (C ₅ -C ₂₈ ) alkyl chain, linear or branched, preferably linear. According to one embodiment of the composition according to the invention C1 or C1', the PHA copolymer(s) are such that the radical R ¹ is an alkyl group comprising 5 to 14, preferably between 6 and 12 carbon atoms, more preferably between 7 and 10 carbon atoms such as n-pentyl, n-hexyl, n-octyl, or n-nonyl.

According to a particular embodiment of the invention, the hydrocarbon chain R ¹ is not substituted. According to a particular embodiment of the invention the hydrocarbon chain R ¹ is not interrupted.

According to another embodiment, the hydrocarbon chain of the radical R ¹ of the invention is 1) either substituted, 2) either interrupted, 3) either substituted and interrupted.

According to a particular embodiment of the invention, the PHA copolymer(s) are such that R ¹ represents a hydrocarbon chain, in particular an alkyl group as defined above, which is interrupted by one or more (preferably one) selected atoms or groups among O, S, N(R _a ), carbonyl, or their associations such as ester, amide, urea, with R _a being as defined above, preferably R _a represents a hydrogen atom; preferably R ¹ represents an alkyl group which is interrupted by one or more atoms chosen from O, S, more preferably by an O atom, or S in particular S. Particularly the radical R ¹ when it represents an interrupted hydrocarbon chain, in particular alkyl , is in C ₇ -C ₂₀ , more particularly in C ₈ -C ₁₈ , even more particularly in C ₉ -C ₁₆ . Preferably said interrupted hydrocarbon chain, in particular alkyl, is linear.

According to another embodiment of the invention, the PHA copolymer(s) are such that R ¹ represents a hydrocarbon chain, in particular an alkyl group as defined above, substituted by one or more (preferably one) atoms or groups chosen from: a) to k) as defined previously. Preferably said hydrocarbon chain is substituted by a single atom or group chosen from: a) to k) as defined above.

According to a particular embodiment of the invention, the PHA copolymer(s) are such that R ¹ represents a hydrocarbon chain, in particular an alkyl group as defined above, which is substituted by one or more (preferably one) groups chosen from a ) halogen such as chlorine or bromine, b) hydroxy, c) thiol, d) (di)(C ₁ -C ₄ )(alkyl)amino and preferably amino, e) carboxy, i) (hetero)cycloalkyl such as anhydride , dithiolane or epoxy, j) cosmetic active chosen from colored or non-colored, fluorescent or non-fluorescent chromophores such as optical brighteners, UV filters, h) (hetero)aryl such as phenyl or furyl, k) RX with R representing a selected group among α) cycloalkyl such as cyclohexyl, β) heterocycloalkyl such as sugar radical preferably monosaccharide such as glucosyl, γ) (hetero)aryl such as phenyl, δ) cosmetic active as defined above m) thiosulfate and X representing a') O , S, N(R _a ), b') carbonyl, c') or their associations of a') with b') such as ester, amide, urea; R _a representing a hydrogen atom, a (C ₁ -C ₄ )alkyl group, or aryl (C ₁ -C ₄ )alkyl such as benzyl, preferably R _a represents a hydrogen atom.

Even more preferably the PHA copolymer(s) are such that R ¹ represents a hydrocarbon chain, in particular an alkyl group as defined above, which is substituted by one or more (preferably one) group(s) chosen from a) halogen such as chlorine or bromine, b) hydroxy, d) (di)(C ₁ -C ₄ )(alkyl)amino preferably amino, e) carboxy, i) (hetero)cycloalkyl such as epoxide, h) (hetero)aryl such as phenyl or furyl, k) RX with R representing a group chosen from α) cycloalkyl such as cyclohexyl, β) heterocycloalkyl such as sugar radical preferably monosaccharide such as glucosyl, γ) (hetero)aryl such as phenyl, and X representing a' ) O, S, N(R _a ) preferably S; R _a representing a hydrogen atom, a (C ₁ -C ₄ )alkyl group, preferably R _a represents a hydrogen atom.

According to one embodiment, said substituted hydrocarbon chain, in particular alkyl, is linear.

According to another embodiment, said substituted hydrocarbon chain, in particular alkyl, is branched.

According to another particular embodiment of the invention, the hydrocarbon chain of the radical R ¹ of the invention is substituted and interrupted.

• substituée par un ou plusieurs (de préférence un) groupes choisis parmi a) halogène tels que chlore ou brome, b) hydroxy, c) thiol, d) (di)(C₁-C₄)(alkyl)amino de préférence amino, e) carboxy, i) (hétéro)cycloalkyle tel que anhydride, dithiolane ou époxyde, j) actif cosmétique choisi parmi les chromophores colorés ou non, fluorescents ou non tels que les azurants optiques, filtres UV, h) (hétéro)aryle tel que phényl ou furyl, k) R-X avecRreprésentant un groupe choisi parmi α) cycloalkyle tel que cyclohexyle, β) hétérocycloalkyle tel que sucre de préférence monosaccharide tel que glucose, γ) (hétéro)aryle tel que phényle, δ) actif cosmétique tel que défini précédemment et X représentant a’) O, S, N(R_a), b’) carbonyle, c’) ou leurs associations de a’) avec b’) tels que ester, amide, urée ;R _a représentant un atome d’hydrogène, un groupe (C₁-C₄)alkyle, ou aryl(C₁-C₄)alkyle tel que benzyle, de préférence R_areprésente un atome d’hydrogène ; et
• interrompue par un ou plusieurs (de préférence un) atomes ou groupes choisis parmi O, S, N(R_a), carbonyle, ou leurs associations telles que ester, amide, urée, avecR _a étant tel que défini précédemment, de préférence R_areprésente un atome d’hydrogène; de préférence un groupe alkyle qui est interrompu par un ou plusieurs atomes choisis parmi O, S, plus préférentiellement par un atome O, ou S notamment S. Particulièrement le radicalR ¹ lorsqu’il représente une chaine hydrocarbonée interrompue, notamment alkyle, est en C₇-C₂₀, plus particulièrement en C₈-C₁₈, encore plus particulièrement en C₉-C₁₆.

According to a particular embodiment of the invention, the hydrocarbon chain (in particular an alkyl group as defined above) of the radical R ¹ of the invention is:

• substituted by one or more (preferably one) groups chosen from a) halogen such as chlorine or bromine, b) hydroxy, c) thiol, d) (di)(C ₁ -C ₄ )(alkyl)amino preferably amino, e) carboxy, i) (hetero)cycloalkyl such as anhydride, dithiolane or epoxide, j) cosmetic active chosen from colored or uncolored, fluorescent or non-fluorescent chromophores such as optical brighteners, UV filters, h) (hetero)aryl such as phenyl or furyl, k) RX with R representing a group chosen from α) cycloalkyl such as cyclohexyl, β) heterocycloalkyl such as sugar preferably monosaccharide such as glucose, γ) (hetero)aryl such as phenyl, δ) cosmetic active such as defined previously _and R _a representing a hydrogen atom, a (C ₁ -C ₄ )alkyl group, or aryl (C ₁ -C ₄ )alkyl such as benzyl, preferably R _a represents a hydrogen atom; And
• interrupted by one or more (preferably one) atoms or groups chosen from O, S, N(R _a ), carbonyl, or their associations such as ester, amide, urea, with R _a being as defined above, preferably R _a represents a hydrogen atom; preferably an alkyl group which is interrupted by one or more atoms chosen from O, S, more preferably by an O, or S atom in particular S. Particularly the radical R ¹ when it represents an interrupted hydrocarbon chain, in particular alkyl, is in C ₇ -C ₂₀ , more particularly in C ₈ -C ₁₈ , even more particularly in C ₉ -C ₁₆ .

• substituée par un ou plusieurs (de préférence un) groupes choisis parmi a) halogène tels que chlore ou brome, b) hydroxy, d) (di)(C₁-C₄)(alkyl)amino de préférence amino, e) carboxy, i) (hétéro)cycloalkyle tel que époxyde, h) (hétéro)aryle tel que phényl ou furyl, k) R-X avecRreprésentant un groupe choisi parmi α) cycloalkyle tel que cyclohexyle, β) hétérocycloalkyle tel que sucre de préférence monosaccharide tel que glucose, γ) (hétéro)aryle tel que phényle, et X représentant a’) O, S, N(R_a) de préférence S ;R _a représentant un atome d’hydrogène, un groupe (C₁-C₄)alkyle, de préférence R_areprésente un atome d’hydrogène; et
• interrompue par un ou plusieurs (de préférence un) atomes ou groupes choisis parmi O, S, N(R_a), carbonyle, ou leurs associations telles que ester, amide, urée, avecR _a étant tel que défini précédemment, de préférence R_areprésente un atome d’hydrogène; de préférence un groupe alkyle qui est interrompu par un ou plusieurs atomes choisis parmi O, S, plus préférentiellement par un atome O, ou S notamment S. Particulièrement le radicalR ¹ lorsqu’il représente une chaine hydrocarbonée interrompue, notamment alkyle, est en C₇-C₂₀, plus particulièrement en C₈-C₁₈, encore plus particulièrement en C₉-C₁₆.

According to a preferred embodiment of the invention, the hydrocarbon chain (in particular an alkyl group as defined above) of the radical R ¹ of the invention is:

• substituted by one or more (preferably one) groups chosen from a) halogen such as chlorine or bromine, b) hydroxy, d) (di)(C ₁ -C ₄ )(alkyl)amino preferably amino, e) carboxy, i) (hetero)cycloalkyl such as epoxide, h) (hetero)aryl such as phenyl or furyl, k) RX with R representing a group chosen from α) cycloalkyl such as cyclohexyl, β) heterocycloalkyl such as sugar preferably monosaccharide such as glucose, γ) (hetero)aryl such as phenyl, and X representing a') O, S, N(R _a ) preferably S; R _a representing a hydrogen atom, a (C ₁ -C ₄ )alkyl group, preferably R _a representing a hydrogen atom; And
• interrupted by one or more (preferably one) atoms or groups chosen from O, S, N(R _a ), carbonyl, or their associations such as ester, amide, urea, with R _a being as defined above, preferably R _a represents a hydrogen atom; preferably an alkyl group which is interrupted by one or more atoms chosen from O, S, more preferably by an O, or S atom in particular S. Particularly the radical R ¹ when it represents an interrupted hydrocarbon chain, in particular alkyl, is in C ₇ -C ₂₀ , more particularly in C ₈ -C ₁₈ , even more particularly in C ₉ -C ₁₆ .

Preferably said substituted and interrupted hydrocarbon chain is in particular alkyl, and preferably is linear.

More preferably when said hydrocarbon chain R ¹ is substituted, it is substituted at the end of the chain on the opposite side of the carbon atom which carries said radical R ¹ .

According to one embodiment of the invention said hydrocarbon chain R ¹ is of the following formula –(CH ₂ ) _r -X-(ALK) _u -G with X being as defined above, in particular representing O, S, N( R _a ), preferably S, ALK represents a (C ₁ -C ₁₀ ) alkylene chain, linear or branched, preferably linear, more particularly (C ₁ -C ₈ ) alkylene, r represents an integer inclusively between 6 and 11 , preferably between 7 and 10 such as 8; u is 0 or 1; and G represents a hydrogen atom, or a group chosen from hydroxy, carboxy, (di)(C ₁ -C ₄ )(alkyl)amino, (hetero)aryl in particular aryl such as phenyl, cycloalkyl such as cyclohexyl, or sugar, in particular a monosaccharide optionally protected by one or more groups such as acyl, preferably Suc.

[Chem. 4]:

According to another particular embodiment of the invention, the PHA copolymer(s) are such that R ¹ represents (C ₅ -C ₂₈ ) alkyl substituted by one or more halogen atoms such as fluorine, chlorine, or bromine. More particularly (C ₄ -C ₂₀ ) alkyl, even more particularly (C ₅ -C ₁₃ ) alkyl, linear, substituted by a halogen atom such as bromine. Preferably the halogen atom is substituted at the end of said alkyl group. More preferably R ¹ represents 1-halo-5-yl such as 1-bromo-5-yl.

According to another particular embodiment of the invention, the PHA copolymer(s) are such that R ¹ represents a (C ₅ -C ₂₈ ) alkyl group substituted by one or more or groups chosen from g) cyano, more particularly represents a group ( C ₃ -C ₁₃ )alkyl, preferably linear, substituted by a g)cyano group, such as 1-cyano-3-propyl.

According to another particular embodiment of the invention, the PHA copolymer(s) are such that R ¹ represents a group vii) (hetero)aryl(C ₁ -C ₂ )alkyl, more particularly aryl aryl(C ₁ -C ₂ )alkyl , preferably phenylethyl.

According to another particular embodiment of the invention, the PHA copolymer(s) are such that R ¹ represents a (C ₅ -C ₂₈ ) alkyl group substituted by one or more or groups chosen from c) (hetero) cycloalkyl. More particularly R ¹ represents a (C ₅ -C ₁₃ ) alkyl group, preferably linear, substituted by a heterocycloalkyl group such as epoxide or dithiolane, preferably epoxide.

In particular the PHA copolymer(s) are such that R ² is chosen from (C ₁ -C ₂₈ ) alkyl, linear or branched, and (C ₂ -C ₂₈ ) linear or branched alkenyl, in particular a linear hydrocarbon group, more particularly (C ₃ -C ₂₀ ) alkyl or (C ₃ -C ₂₀ ) alkenyl, preferably (C ₃ -C ₂₀ ) linear or branched and more particularly linear alkyl.

In particular the PHA copolymer(s) are such that R ² is chosen from (C ₁ -C ₂₈ ) alkyl, linear or branched, and (C ₂ -C ₂₈ ) linear or branched alkenyl, in particular a linear hydrocarbon group, more particularly (C ₃ -C ₂₀ ) alkyl or (C ₃ -C ₂₀ ) alkenyl, preferably the hydrocarbon group has a carbon number corresponding to the number of carbon atoms of the radical R ¹ from which at least one carbon atom is subtracted, preferably corresponding to the number of carbon atoms of the radical R ¹ from which two carbon atoms are subtracted.

According to one embodiment of the invention, the PHA copolymer(s) are such that the radical R ² is a (C ₃ -C ₈ ) alkyl group, linear or branched, preferably linear, particularly in (C ₃ -C ₆ )alkyl, preferably (C ₄ -C ₆ )alkyl such as n -pentyl or n -hexyl.

According to another embodiment of the composition according to the invention C1 or C1', the PHA copolymer(s) comprise a radical R ² (C ₃ -C ₈ ) branched alkyl, particularly in (C ₄ -C ₆ ) alkyl, of preferably (C ₄ -C ₅ ) branched alkyl such as isobutyl.

According to another embodiment of the composition according to the invention C1 or C1', the PHA copolymer(s) of the invention comprise the units (A) having an alkenyl radical R ¹ as defined above, the units (B) such as defined previously and the units (C) having a linear or branched (C ₆ -C ₂₀ ) alkenyl radical, particularly (C ₇ -C ₁₄ ) alkenyl, more particularly (C ₈ -C ₁₀ ) alkenyl, preferably linear and comprising a single unsaturation at the end of the chain, in particular –[CR ⁴ (R ⁵ )] _q -C(R ⁶ )=C(R ⁷ )-R ⁸ with R ⁴ , R ⁵ , R ⁶ , R ⁷ and R ⁸ , identical or different, representing a hydrogen atom or a (C ₁ -C ₄ ) alkyl group such as methyl, preferably a hydrogen atom and q represents an integer inclusively between 2 and 20, preferably between 3 and 10, more preferably between 4 and 8 such as 6, such as –[CH ₂ ] _q -CH=CH ₂ and q represents an integer inclusively between 3 and 8, preferably between 4 and 6, such as 5.

According to one embodiment of the composition according to the invention C1 or C1', the PHA copolymer(s) comprise units (A) having an alkyl radical R ¹ comprising between 8 and 16 carbon atoms substituted by one or more (preferably a) groups chosen from hydroxy, (di)(C ₁ -C ₄ )(alkyl)amino, carboxy, and RX- as defined above, preferably RS- with R representing a cycloalkyl group such as cyclohexyl, heterocycloalkyl such as sugar or preferably monosaccharide such as glucose, optionally substituted aryl(C ₁ -C ₄ )alkyl such as (C ₁ -C ₄ )(alkyl)benzyl or phenylethyl, or heteroaryl(C ₁ -C ₄ )alkyl such as furylmethyl,

According to one embodiment of the composition C1' of the invention, the copolymer(s) comprise units (B) having an R ² (C ₁ -C ₈ ) alkyl radical, linear or branched, preferably linear, particularly in ( C ₂ -C ₆ )alkyl, preferably (C ₄ -C ₅ )alkyl such as pentyl.

According to another embodiment of the composition C1 or C1' according to the invention, the PHA copolymer(s) comprise units (A) having an alkyl radical R ¹ as defined above, units (B) as defined above and (C) having a linear or branched (C ₆ -C ₂₀ )alkenyl radical, particularly (C ₇ -C ₁₄ )alkenyl, more particularly (C ₈ -C ₁₀ )alkenyl, preferably linear and comprising a single unsaturation at the end of chain such that –[CH ₂ ] _p -CH=CH ₂ and p represents an integer inclusively between 3 and 8, preferably between 4 and 6, such as 5.

According to a particular embodiment of the invention in the PHA copolymer(s), the unit (A) comprises a hydrocarbon chain as defined previously, in particular ii), said unit (A) being preferably present in a molar percentage ranging from 0.1 to 99%, more preferably a molar percentage ranging from 0.5 and 50%, even more preferably a molar percentage ranging from 1 and 40%, even better a molar percentage ranging from 2 and 30%, a percentage molar ranging from 5 and 20%.

According to a particular embodiment of the invention in the PHA copolymer(s), the unit (A) is preferably present in a molar percentage ranging from 0.5 to 99%.

According to one embodiment, when R ¹ represents a (C ₅ -C ₂₈ ) alkyl group, the unit (A) is preferably present in a molar percentage ranging from 0.5% to 99%, more preferably 50% to 99%, more particularly from 60% to 99% and even more preferably from 70% to 99%. According to this embodiment, the unit (B) is preferably present in a molar percentage ranging from 2 to 40%; and the unit (C) is preferably present in a molar percentage ranging from 0.5 to 20% relative to all of the units (A) , (B) and (C) .

According to another embodiment when R ¹ represents hydrocarbon chain chosen from i) (C ₅ -C ₂₈ ) alkyl, linear or branched, ii) (C ₅ -C ₂₈ ) alkenyl, linear or branched, iii) (C ₅ - C ₂₈ ) alkynyl, linear or branched, preferably the hydrocarbon group is linear, said hydrocarbon chain being substituted by one or more atoms or groups a) to m) and/or interrupted by one or more heteroatoms or groups a') to c' ) as defined for R ¹ ; in particular represents a hydrocarbon group chosen from (C ₄ -C ₂₈ ) alkyl, linear or branched optionally substituted by one or more atoms or groups a) to m) and/or interrupted by one or more heteroatoms or groups a') to c ') as defined previously, the unit (A) is preferably present in a molar percentage ranging from 0.5% to 99%, more preferably a molar percentage ranging from 1% and 50%, even more preferably a molar percentage ranging from 5% and 40%, even better a molar percentage ranging from 5% and 30%; the unit (B) is present in a molar percentage ranging from 1% to 99.5%, preferably from 1% to 90%, more preferably from 2% to 70%; and the unit (C) is present in a molar percentage ranging from 0.5% to 20% relative to all of the units (A) , (B) and (C) . Advantageously, the PHA copolymer(s) of the invention comprise from 2% to 70% by mole of unit (B) ; and from 0.5% to 10% by mole of unit (C) , more advantageously the copolymer comprises from 5% to 70% by mole of unit (B) ; and from 0.5% to 7% by mole of unit (C) .

• l’unité(A)comprend une chaine hydrocarbonée par un ou plusieurs atomes ou groupes a) à m) et/ou intérrompue par un ou plusieurs hétéroatomes ou groupes a’) à c’) telle que définie précédemment, ladite unité(A)étant présente en un pourcentage molaire allant de 0,1 % à 99 %, préférentiellement un pourcentage molaire allant de 0,5 % et 50 %, plus préférentiellement un pourcentage molaire allant de 1 % et 40 %, encore plus préférentiellement un pourcentage molaire allant de 2 % et 30 %, en mole d’unité(A); et
• l’unité(B)est présente en un pourcentage molaire allant de 1 à 40 % ; préférentiellement un pourcentage molaire de 2 % à 40 %, plus préférentiellement un pourcentage molaire de 5 % à 30 % en mole d’unité(B); et/ou
• l’unité(C)est présente en un pourcentage molaire allant de 0,5 % à 20 %, préférentiellement un pourcentage molaire de 1 % à 10 %, plus préférentiellement de 0,5 % à 7 % en mole d’unité(C).

According to a more particular embodiment of the invention, the PHA copolymer(s) are such as in the PHA copolymer(s) a):

• the unit (A) comprises a hydrocarbon chain with one or more atoms or groups a) to m) and/or interrupted by one or more heteroatoms or groups a') to c') as defined previously, said unit (A) being present in a molar percentage ranging from 0.1% to 99%, preferably a molar percentage ranging from 0.5% and 50%, more preferably a molar percentage ranging from 1% and 40%, even more preferably a molar percentage ranging 2% and 30%, in mole of unit (A) ; And
• the unit (B) is present in a molar percentage ranging from 1 to 40%; preferably a mole percentage of 2% to 40%, more preferably a mole percentage of 5% to 30% by mole of unit (B) ; and or
• the unit (C) is present in a mole percentage ranging from 0.5% to 20%, preferably a mole percentage of 1% to 10%, more preferably from 0.5% to 7% by mole of unit (C ) .

Preferably when R ¹ of unit (A) is an uninterrupted unsubstituted saturated hydrocarbon chain said unit (A) is present in a molar percentage greater than 30%, more particularly greater than 50%, more preferably greater than 60 % preferably between 60% and 90%.

The values of the molar percentages of the units (A), (B) and (C) of the PHA copolymer(s) are calculated relative to the total number of moles of (A) + (B) if the copolymer(s) do not include additional unit (C), otherwise if the copolymer(s) of the invention contain 3 different units (A), (B) and (C) then the mole percentage is calculated in relation to the total number of moles (A) + (B) + (C); otherwise if the copolymer(s) of the invention contain 4 different units (A), (B), (C) and (D) then the mole percentage is calculated in relation to the total number of moles (A) + (B) + (C) + (D); otherwise if the copolymer(s) of the invention contain 5 different units (A), (B), (C), (D) and (E) then the mole percentage is calculated in relation to the total number of moles (A) + (B) + (C) + (D) + (E).

According to one form of the invention, the PHA copolymer(s) of the invention comprise the repeating units(HAS)following, as well as their optical and geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates: (HAS) R ¹ A1 -ALK ₁ -S-ALK ₂ -COOH A2 -ALK ₁ -S-ALK ₂ -H A3 -ALK ₁ -S-ALK ₂ -OH A4 -ALK ₁ -S-ALK ₂ -NH ₂ AT 5 -ALK ₁ -S-Cycl' A6 -ALK ₁ -S-CH ₂ -Fur A7 -ALK ₁ -S-Suc AT 8 -ALK ₁ -S-ALK ₂ -Ar A9 -ALK ₁ -Hal A10 -ALK ₁ -CN A11 -ALK ₁ -CH=CR _r R _w AT 12 -ALK ₂ -H Repeater unit A1 to A12 in which:
-ALK₁represents a divalent hydrocarbon radical in C₁-VS₂₀linear or branched, preferably C₁-VS₁₀linear or branched, more preferably linear;
-ALK₂represent a divalent hydrocarbon radical in C₁-VS₂₀linear or branched, preferably C₁-VS₁₂linear or branched;
- Rr and Rw independently designate a hydrogen atom or an alkyl radical (C₁-VS₄such as methyl, preferably Rr and Rw are identical;
- Hal represents a halogen atom such as bromine;
- Ar: represents a (hetero)aryl group such as phenyl;
- Cycl': represents a cycloalkyl group such as cyclohexyl or heterocycloalkyl such as dithiolane or epoxide, preferably epoxide;
- Fur: represents a furyl group, preferably 2-furyl;
- Suc: represents a sugar group, in particular a monosaccharide possibly protected by one or more groups such as acyl, in particular acetyl.
Particularly the stereochemistry of carbon atoms carrying R radicals¹is of configuration (R).

According to one form of the invention, the PHA copolymer(s) of the invention comprise the repeating units(B)of formula (A12), as well as their optical, geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates, it being understood that(B)is different from(HAS).

Preferably the PHA copolymer(s) of the invention comprise the following repeating units, as well as their optical, geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates:

[Chem. 5]:

m and n are as defined above, Hal represents a halogen atom such as bromine and t represents an integer between 1 and 10, preferably between 3 and 8 such as 6.
Ar: represents a (hetero)aryl group such as phenyl;
Ar': represents a (C ₁ -C ₄ )alkyl(hetero)aryl group such as t-Butylphenyl, preferably 4- t -butylphenyl;
Cycl: represents a cyclohexyl group;
Fur: represents a furyl group, preferably 2-furyl;
Suc: represents a sugar group, in particular a monosaccharide optionally protected by one or more groups such as acyl, preferably Suc represents:
[Chem. 6]:
Particularly the stereochemistry of carbon atoms carrying the radicals R ¹ , and R ² is the same configuration (R) or (S), preferably configuration (R).

More particularly the stereochemistry of the carbon atoms carrying the radicals R ¹ , R ² and R ³ is the same configuration (R) or (S), preferably of configuration (R). More particularly the stereochemistry of the carbon atoms carrying the radicals R ¹ , R ² , R ³ , and R ⁴ is the same configuration (R) or (S), preferably of configuration (R).

More particularly the stereochemistry of the carbon atoms carrying the radicals R ¹ , R ² , R ³ , R ⁴ , and R ⁵ is the same configuration (R) or (S), preferably of configuration (R).

More preferably, the PHA copolymer(s) have the following formula, as well as their optical isomers, their organic or mineral acid or base salts, and their solvates such as hydrates:

[Chem. 7]:

M, n, Hal, t, Ar, Ar', Cycl, Fur, and Suc are as defined above for compounds (1) to (14).

Preferably the PHA(s) a) of the invention are chosen from compounds (15), (16) and (17) in particular (16).

More particularly, the PHA(s) a) of the invention are chosen from compounds (15'), (16') and (17') in particular (16').

More particularly the PHA(s) a) of the invention is the compound (23').

Preferably the PHA(s) a) of the invention are chosen from compounds (25), (26), (31) and (32) in particular (26).

The PHA copolymer(s) of the invention preferably have a number average molecular weight ranging from 50,000 to 150,000.

The molecular weight can be measured in particular by steric exclusion chromatography. One method is described below in the examples.

The PHA copolymer(s) are particularly present in composition C1 according to the invention in a content ranging from 0.1 to 65% by weight, relative to the total weight of the composition, preferably ranging from 0.1 to 60% by weight. weight.
Method of preparation of the PHA copolymer(s):

The methods for preparing the PHA copolymer(s) of the invention are known to those skilled in the art. We can in particular cite the use of microbial strains producing “ functionalizable ” PHA.

By “ functionalizable ” we mean that the PHA copolymer(s) comprises a hydrocarbon chain comprising one or more atoms or groups capable of reacting chemically with another reagent – also called “reactive atoms or reactive groups ” – to lead to a covalent bond Σ with said reagent. The reagent is for example a compound comprising at least one nucleophilic group and said functionalized hydrocarbon chain comprises at least one electrophilic or nucleophobic atom or group, the nucleophilic group(s) reacting with the electrophilic group(s) to graft covalently onto the reagent. The nucleophilic reagent can also react with one or more unsaturations of the alkylenyl group(s) to also lead to grafting by covalent bond of the hydrocarbon chain functionalized by said reagent. The addition reaction can also be radical, a Markovnikov or anti-Markovnikov type addition, a nucleophilic or electrophilic substitution. The addition or condensation reactions can be carried out by radical means or not, using catalysts or not, enzymes or not, heat preferably at a temperature less than or equal to 100°C or without the addition of heat, under pressure greater than 1 atm or not, under inert atmosphere or not, or under oxygen or not.

By “ nucleophile ” we mean any atom or electron-donating group by inductive effect +I and/or mesomer +M. As an electron donor group, we can cite hydroxy, thiol and amino groups.

By “ electrophile ” we mean any atom or group which is electroattractant by inductive effect –I and/or by mesomeric effect –M. As an electroattractor we can cite.

The microorganisms producing PHAs of the invention, in particular with a hydrocarbon chain, can be naturally produced by the Bacterial kingdom such as Cyanobacteria of the order Nostocales (e.g. Nostoc muscorum, Synechocystis and Synechococcus ) but mainly among Proteobacteria, for example in the class of:
- beta - Proteobacteria , of the order Burkholderiales ( Cupriavidus negator synonym Rasltonia eutropha )
- alpha - Proteobacteria , of the order Rhodobacteriales (marine and photosynthetic Rhodobacter capsulatus )
- gamma-Proteobacteria , of the order Pseudomonales of the family Moraxellaceae (Acinetobacter Junii)

Among the microorganisms of the Bacterial kingdom, the genera Azotobacter, Hydrogenomomas, or Chromatium are the most representative of PHA-producing organisms.

The organisms naturally producing PHAs with a hydrocarbon chain in particular in C ₃ -C ₅ are in particular the Proteobacteria , such as gamma-Proteobacteria , and more particularly of the order of Pseudomonas of the Pseudomonas family such as Pseudomonas resinovorans , Pseudomonas putida , Pseudomonas fluorescens , Pseudomonas aeruginosa , Pseudomonas citronellolis , Pseudomonas mendocina , Pseudomonas chlororaphis and preferably Pseudomonas putida GPo1 and Pseudomonas putida KT2440 . Preferably Pseudomonas putida and Pseudomonas putida and in particular Pseudomonas putida GPo1 and Pseudomonas putida KT2440

Some organisms can also naturally produce PHAs without belonging to the order Pseudomonaes such as Commamonas testosteroni which belongs to the class of beta-Proteobacteria of the order Burkholderiales of the family Comamonadaceae .

The PHA-producing microorganism according to the invention can also be a recombinant strain if a PHA 3-oxidation synthase metabolic pathway is present. The 3-oxidation PHA synthase metabolic pathway is mainly represented by four classes of EC enzymes: 2.3.1 B2; EC: 2.3.1 B3 EC: 2.3.1 B4 and EC: 2.3.1 B5.

The recombinant strain can be from the Bacteria kingdom such as Escherichia coli , or from the Plantae kingdom such as Chlorella pyrenoidosa ( International Journal of Biological Macromolecules , 116, 552-562 “Influence of nitrogen on growth, biomass composition, production, and properties of polyhydroxyalkanoates (PHAs) by microalgae") or from the kingdom Fungi ex Saccaromyces cerevisiae or Yarrowia lipotyca: Applied Microbiology and Biotechnology 91 , 1327–1340 (2011) "Engineering polyhydroxyalkanoate content and monomer composition in the oleaginous yeast Yarrowia lipolytica by modifying the ß-oxidation multifunctional proteins”).

It is also possible to use genetically modified microorganisms, which can allow for example the increase in PHA production, and/or to increase the oxygen consumption capacity, and/or to decrease autolysis and/or to modify the ratio of monomers.

It is known that for PHAs, a large part of the total production cost is allocated to the culture medium and mainly to the substrate/carbon source. Thus we can use genetically modified microorganisms using less nutrient (carbon source) for their growth, for example photo-autotrophic by nature, ie using light and CO ₂ as the main source of energy.

The copolymer can be obtained in a known manner by biosynthesis, for example with microorganisms belonging to the genus Pseudomonas, such as Pseudomonas resinovorans, Pseudomonas putida, Pseudomonas fluorescens, Pseudomonas aeruginosa, Pseudomonas citronellolis, Pseudomonas mendocina, Pseudomonas chlororaphis and preferably Pseudomonas putida; and with a carbon source which may be a C ₂ -C ₂₀ carboxylic acid, preferably C ₆ -C ₁₈ , such as acetic acid, propionic acid, butyric acid, hexanoic acid , heptanoic acid, octanoic acid, nonanoic acid, dodecanoic acid; an alkenoic acid such as undecylenic acid, a saccharide such as fructose, maltose, lactose, xylose, arabinose, etc. ) ; an n -alkane such as hexane, octane, dodecane; an n -alcohol such as methanol, ethanol, octanol, glycerol; methane, carbon dioxide.

The biosynthesis can optionally be carried out in the presence of an inhibitor of the β-oxidation pathway such as acrylic acid, methacrylic acid, propionic acid, cinnamic acid, salicylic acid, pentenoic acid. , 2-butynoic acid, 2-octynoic acid, phenylpropionic acid, and preferably acrylic acid.

According to one embodiment, the process for preparing PHAs of the invention uses microbial cells producing PHAs by genetically modified microorganisms (GMO). Genetic modification may increase PHA production, increase oxygen uptake capacity, increase resistance to solvent toxicity, decrease autolysis, alter the ratio of PHA co-monomers, and/or any combination of these -this. In some of these embodiments, changing the ratio of unit co-monomers (A) increases the amount of predominant monomer vs (B) of the PHA of the invention obtained. In another embodiment, the PHA-producing microbial cells reproduce naturally.

As an example of a microbial strain producing genetically modified functionalizable PHA or comprising a reactive group, we can cite Pseudomonas entomophila LAC23 ( Biomacromolecules . 2014 Jun 9;15(6):2310-9. doi: 10.1021/bm500669s)

It is also possible to use genetically modified microorganisms producing phenylvaleric co 3-Hydroxydodecanoic copolymers ( Sci China Life Sci , Shen R, et al.,. 57 No.1, (2014) with a strain such as Pseudomonas entomophila LAC23 .

Nutrients such as water-soluble salts based on nitrogen, phosphorus, sulfur, magnesium, sodium, potassium and iron can also be used for biosynthesis.

Known suitable conditions of temperature, pH, dissolved oxygen (DO) can be used for the cultivation of microorganisms.

The microorganisms can be cultivated according to any known cultivation method, such as in a bioreactor in continuous, batch mode, in fed or non-fed mode.

The biosynthesis of the polymers used according to the invention is described in particular in the article “Biosynthesis and Properties of Medium-Chain-Length Polyhydroxyalkanoates with Enriched Content of the Dominant Monomer”, Xun Juan et al; Biomacromolecules 2012, 13, 2926−2932 and in application WO 2011/069244.

The microbial strains producing functionalizable PHA or comprising a reactive group as defined above are for example of the Pseudomonas genus such as P. cichorii YN2 , P. citronellolis , P. jessenii, and more generally by species of Pseudomonas putida such as Pseudomonas putida GPo1 (synonymous with Pseudomonas oleovorans), P. putida KT2442, P. putida KT2440 , P. putida KCTC 2407, P. putida BM01 and in particular P. putida KT2440.

The source(s) of carbon:

One way to access the PHAs of the invention is to introduce one or more organic compounds into the culture medium, this or these organic compounds represent one or more carbon sources preferably chosen from alkanes, alkenes, alcohols. , carboxylic acids and their mixture.

In one embodiment, the organic compound(s) will preferably be chosen from alcohols, carboxylic acids and their mixture.

1. Source de carbone par un ou plusieurs composés organiques introduit dans le milieu :

The carbon source(s) can be classified into 2 categories:

1. Source of carbon by one or more organic compounds introduced into the environment:

According to a particular embodiment of the invention, the organic compound(s) are chosen from alcohols, in particular (C ₅ -C ₂₀ ) alkanols, and/or carboxylic acids, in particular (C ₅ -C ₂₀ ) acids. )alkanoic acids optionally substituted and/or interrupted, in particular (C ₅ -C ₂₀ )alkanoic acids such as (C ₇ -C ₁₁ )alkanoic acids such as nonanoic acid or pelargonic acid and/or (C ₅ -C) acids ₂₀ ) alkenoic acids, in particular (C ₅ -C ₂₀ ) alkenoic acids such as (C ₇ -C ₁₁ ) alkenoic acids such as undecylenic acid, and mixtures thereof.

• groupe A, le composé organique peut aider à la croissance de la souche productrice et aide à la production de PHA structurellement lié au composé organique.
• groupe B, le composé organique peut aider à la croissance de la souche mais ne participe pas à la production de PHA structurellement lié au composé organique.
• groupe C : le composé organique ne participe pas à la croissance de la souche.

The carbon source(s) can be classified into 3 groups according to their destination:

• group A, the organic compound can aid in the growth of the producing strain and aids in the production of PHA structurally related to the organic compound.
• group B, the organic compound can help the growth of the strain but does not participate in the production of PHA structurally linked to the organic compound.
• group C: the organic compound does not participate in the growth of the strain.

Such microbiological processes are known to those skilled in the art, particularly in the scientific literature. We can cite: International Journal of Biological Macromolecules 28 , 23–29 (2000); The Journal of Microbiology , 45 , No. 2, 87-97, (2007).

According to a variant, the integration of the substrate which is structurally linked to the reactive atom(s) or to the reactive group(s) of the PHA(s) of the invention is introduced directly into the medium as a unique carbon source in a suitable medium for microbial growth. (Example: group A for P.putida GPo1 : alkenoic acid in particular terminals).

According to another variant, the integration of the substrate which is structurally linked to the reactive atom(s) in particular halogen or to the reactive group(s) of the PHA(s) of the invention is introduced into the medium as a carbon source. with a second carbon source as a co-substrate that is also structurally linked to the PHA in a medium suitable for microbial growth. (Example: group B for P.putida GPo1 : preferably terminal haloalkanoic acids such as terminal Bromo-alkanoic acids).

According to yet another variant, the integration of the substrate which is structurally linked to the reactive atom(s) in particular halogen or to the reactive group(s) of the PHA(s) of the invention can be introduced directly into the medium as carbon source with a second co-substrate carbon source that is also structurally related to the PHA(s) and a third co-substrate carbon source that is not structurally related to the PHA(s) in a suitable medium for microbial growth. (Example: group C glucose or sucrose).

In one embodiment, the inhibitor of the beta oxidation pathway is acrylic acid, 2-butynoic acid, 2-octynoic acid, phenylpropionic acid, propionic acid, trans-acid cinnamic acid, salicylic acid, methacrylic acid, 4-pentenoic acid or 3-mercaptopropionic acid.

In one embodiment of the first aspect, the functionalized fatty acid is a functionalized hexanoic acid, functionalized heptanoic acid, functionalized octanoic acid, functionalized nonanoic acid, functionalized decanoic acid, functionalized undecanoic acid, functionalized dodecanoic acid or functionalized tetradecanoic acid.

• pour une fonctionnalisation du ou des PHA avec un groupe alkyl ramifié ou branché : voir par ex.Applied and Environmental Microbiology,.60, No.9, 3245-325 (1994) ;
• pour une fonctionnalisation du ou des PHA avec un groupe alkyl linéaire comprenant un motif terminal en cyclohexyl : voir par ex. doi.org/10.1016/S0141-8130(01)00144-1 ;
• pour une fonctionnalisation du ou des PHA avec un groupe alkyl insaturé de préférence terminal voir par ex. doi.org/10.1021/bm8005616) ;
• pour une fonctionnalisation du ou des PHA avec un groupe alkyl linéaire comprenant un halogène de préférence en terminaison de la chaine hydrocarbonée (doi.org/10.1021/ma00033a002) ;
• pour une fonctionnalisation du ou des PHA avec un groupe (hétéro)aromatique alkyle par exemple phényl, benzoyl, phénoxy, voir par ex.J.Microbiol. Biotechnol, 11, 3,435-442 (2001) ;
• pour une fonctionnalisation du ou des PHA avec un groupe alkyl linéaire comprenant un hétéroatome notamment en terminaison de chaine hydrocarbonée, voir par ex. DOI 10.1007/s00253-011-3099-4 ;
• pour une fonctionnalisation du ou des PHA avec un groupe alkyl linéaire comprenant une fonction cyano notamment en terminaison de chaine hydrocarbonée, voir par ex. .org/10.1111/j.1574-6968.1992.tb05839.x ;
• pour une fonctionnalisation du ou des PHA avec un groupe alkyl linéaire comprenant une fonction époxy notamment en terminaison de chaine hydrocarbonée, voir par ex. doi.org/10.1016/S1381-5148(97)00024-2 ;

The functionalization can be introduced by an organic compound chosen from the precursors of the alcohol and/or carboxylic acid category, in particular:

• for functionalization of the PHA(s) with a branched or branched alkyl group: see e.g. Applied and Environmental Microbiology, . 60 , No.9, 3245-325 (1994);
• for functionalization of the PHA(s) with a linear alkyl group comprising a terminal cyclohexyl unit: see e.g. doi.org/10.1016/S0141-8130(01)00144-1;
• for functionalization of the PHA(s) with a preferably terminal unsaturated alkyl group see e.g. doi.org/10.1021/bm8005616);
• for functionalization of the PHA(s) with a linear alkyl group comprising a halogen preferably at the end of the hydrocarbon chain (doi.org/10.1021/ma00033a002);
• for functionalization of the PHA(s) with a (hetero)aromatic alkyl group, for example phenyl, benzoyl, phenoxy, see e.g. J. Microbiol. Biotechnol, 11 , 3,435-442 (2001);
• for functionalization of the PHA(s) with a linear alkyl group comprising a heteroatom in particular at the end of the hydrocarbon chain, see e.g. DOI 10.1007/s00253-011-3099-4;
• for functionalization of the PHA(s) with a linear alkyl group comprising a cyano function in particular at the end of the hydrocarbon chain, see e.g. .org/10.1111/j.1574-6968.1992.tb05839.x;
• for functionalization of the PHA(s) with a linear alkyl group comprising an epoxy function in particular at the end of the hydrocarbon chain, see e.g. doi.org/10.1016/S1381-5148(97)00024-2;

The journal International Microbiology 16:1-15 (2013) doi:10.2436/20.1501.01.175) also mentions the majority of functionalized native PHAs.

In a particular embodiment of the invention, the group A fatty acid is chosen from 11-undecenoic acid, 10-epoxyundecanoic acid, 5-phenyl valeric acid, citronellol, and acid 5-cyanopentanoic.

In a particular embodiment of the invention, the group A fatty acid is chosen from halogenooctanoic acids such as 8-bromooctanoic acid.

1. Source de carbone en présence d’inhibiteur d’oxydation introduit dans le milieu :

In a particular embodiment of the invention, the carbon source of group C is a monosaccharide, preferably glucose.

1. Source of carbon in the presence of an oxidation inhibitor introduced into the environment:

Another aspect of the invention is the use of microbial strains producing PHA, in a medium suitable for microbial growth, said medium comprising: a substrate which is structurally linked to the PHA(s); at least one carbon source that is not structurally related to the PHA(s); and at least one inhibitor of the oxidation pathway, in particular beta oxidation. This allows the growth of microbial cells to occur in said medium, the microbial cells synthesize the PHA polymer(s) of the invention; preferably copolymer having particularly more than 95% identical unit, which has a co-monomer ratio of unit (A) and unit (B) which differs from that obtained in the absence of the inhibitor of the pathway. beta oxidation.

The diagram below illustrates by way of example the functionalization of PHA copolymers according to the invention from PHA copolymer with an unsaturated hydrocarbon chain according to the following diagram 1:

• R ² ,m, etnsont tels que définis précédemment ;
• Yreprésente un groupe choisi parmi Hal tel que chlore ou brome, hydroxy, thiol, (di)(C₁-C₄)(alkyl)amino, R-X avecRreprésentant un groupe choisi parmi α) cycloalkyle tel que cyclohexyle, β) hétérocycloalkyle tel que sucre de préférence monosaccharide tel que glucose, γ) (hétéro)aryle tel que phényle ; δ) actif cosmétique tel que défini précédemment ; ε) (C₁-C₂₀)alkyle, (C₂-C₂₀)alkényle, (C₂-C₂₀)alkynyle ; et X représentant a’) O, S, N(R_a) ou Si(R_b)(R_c) ou e) (C₁-C₂₀)alkyle, linéaire ou ramifié, avec R_a, R_bet R_ctels que définis précédemment;
• q’représente un entier compris inclusivement entre 2 et 20, de préférence entre 3 et 10, plus préférentiellement entre 4 et 8 tel que 6, mieux entre 3 et 8, de préférence entre 4 et 6, tel que 5.

[Chem. 8]:
Diagram 1 in which:

• R ² , m , and n are as defined previously;
• Y represents a group chosen from Hal such as chlorine or bromine, hydroxy, thiol, (di)(C ₁ -C ₄ )(alkyl)amino, RX with R representing a group chosen from α) cycloalkyl such as cyclohexyl, β) heterocycloalkyl such as sugar, preferably monosaccharide such as glucose, γ) (hetero)aryl such as phenyl; δ) cosmetic active ingredient as defined previously; ε) (C ₁ -C ₂₀ )alkyl, (C ₂ -C ₂₀ )alkenyl, (C ₂ -C ₂₀ )alkynyl; _{and _ _ _ _ _ _ _} as defined previously;
• q' represents an integer inclusively between 2 and 20, preferably between 3 and 10, more preferably between 4 and 8 such as 6, better still between 3 and 8, preferably between 4 and 6, such as 5.

Other reactions can be carried out from double or triple unsaturations such as Michael additions, Diels-Alder additions, radical additions, catalytic hydrogenation reactions (in particular with Pd, Ni) or not, hydrogenation reactions. halogenation in particular with bromine, hydration, controlled or uncontrolled oxidation, and reactions on electrophiles as shown schematically below:

• une chaine hydrocarbonée R¹linéaire ou ramifiée saturée, substituée et/ou intérrompue par des atomes ou groupes tels que définis précédemment pour R¹, comprenant au total entre 5 et 30 atomes de carbone, de préférence entre 6 et 20 atomes de carbone plus particulièrement entre 7 et 11 carbone et
• une chaine hydrocarbonée R²représentant un radical (C₃-C₂₀)alkényle linéaire ou ramifié, particulièrement (C₅-C₁₄)alkényle, plus particulièrement (C₇-C₁₀)alkényle, de préférence linéaire et comprenant une seule insaturation en bout de chaine, en particulier –[CR⁴(R⁵)]_q-C(R⁶)=C(R⁷)-R⁸avec R⁴, R⁵, R⁶, R⁷et R⁸, identiques ou différents, représentant un atome d’hydrogène ou un groupe (C₁-C₄)alkyle tel que méthyle, de préférence un atome d’hydrogène et q représente un entier compris inclusivement entre 2 et 20, de préférence entre 3 et 10, plus préférentiellement entre 4 et 8 tel que 6, tel que –[CH₂]_q-CH=CH₂et q représente un entier compris inclusivement entre 3 et 8, de préférence entre 4 et 6, tel que 5 ,

ladite chaine R²comprenant entre 1 et 99 %, préférentiellement entre 2 à 50% et encore plus préférentiellement entre 3 et 40% d’insaturations, et encore plus particulièrement entre 3 et 30 % d’insaturation, mieux entre 5 et 20% d’insaturations. Selon ce mode particulier de l’invention dans lequel les copolymères PHA comprenent des insaturations, ces insaturations peuvent être modifiés chimiquement :
A) par des réactions d’addition, telles que des additions radicalaires, additions de Michael, additions électrophiles, réaction de Diels-Alder, d’halogénation, d’hydratation, d’hydrogénation, et de préférence d’hydrothiolation avec des particules, des composés chimiques ou des polymères.According to a particular embodiment of the invention, the PHA copolymers comprise

• a saturated linear or branched hydrocarbon chain R ¹ , substituted and/or interrupted by atoms or groups as defined above for R ¹ , comprising in total between 5 and 30 carbon atoms, preferably between 6 and 20 carbon atoms more particularly between 7 and 11 carbon and
• a hydrocarbon chain R ² representing a linear or branched (C ₃ -C ₂₀ )alkenyl radical, particularly (C ₅ -C ₁₄ )alkenyl, more particularly (C ₇ -C ₁₀ )alkenyl, preferably linear and comprising a single unsaturation in end of chain, in particular –[CR ⁴ (R ⁵ )] _q -C(R ⁶ )=C(R ⁷ )-R ⁸ with R ⁴ , R ⁵ , R ⁶ , R ⁷ and R ⁸ , identical or different , representing a hydrogen atom or a (C ₁ -C ₄ ) alkyl group such as methyl, preferably a hydrogen atom and q represents an integer inclusively between 2 and 20, preferably between 3 and 10, more preferably between 4 and 8 such as 6, such as –[CH ₂ ] _q -CH=CH ₂ and q represents an integer inclusively between 3 and 8, preferably between 4 and 6, such as 5,

said R ² chain comprising between 1 and 99%, preferably between 2 to 50% and even more preferably between 3 and 40% unsaturations, and even more particularly between 3 and 30% unsaturation, better still between 5 and 20% d unsaturations. According to this particular mode of the invention in which the PHA copolymers comprise unsaturations, these unsaturations can be chemically modified:
A) by addition reactions, such as radical additions, Michael additions, electrophilic additions, Diels-Alder reaction, halogenation, hydration, hydrogenation, and preferably hydrothiolation with particles, chemical compounds or polymers.

• Les alcanethiols linéaires, ramifiés, cycliques ou aromatiques comportant 1 à 14 atomes de carbone, tel que méthane-, éthane-, propane-, pentane-, cyclopentane-, hexane-, cyclohexane-, heptane-, octane, phénylethane-, 4-tert-butylphénylmethane-, 2-furanmethane-thiol, de préférence hexane-, cyclohexane-, heptane-, octane, phénylethane-, 4-tert-butylphénylmethane-, 2-furanmethane-thiol ;
• Les organosiloxanes portant une fonction thiol, tels que le (3-mercaptopropyl)trimethoxysilane, le (3-Mercaptopropyl)methyldimethoxysilane, le 2-(Triethoxysilyl)ethanethiol, le mercaptopropyl-isobutyl-POSS ;
• Les Huiles silicones thiolées notamment celle décrites dans le document DOI : 10.1016/j.actbio.2015.01.020) ;
• Les oligomères ou polymères thiolés portant une fonction réactive, tel qu’une amine, un alcool, un acide, un halogène, un thiol, un époxyde, un nitrile, un isocyanate, un hétéroatome, de préférence la cysteine, la cystéamine, la N-acetylcysteamine, 2-Mercaptoethanol, 1-Mercapto-2-propanol, 8-Mercapto-1-octanol, l’acide thiolactique, l’acide thioglycolique, l’acide mercapto-3-propionique, l’acide 11-mercaptoundecanoique, le polyéthylene glycol dithiol, le 3-Mercaptopropionitrile, le 1,3-Propanedithiol, le4-Cyano-1-butanethiol, le 3-Chloro-1-propanethiol, le 1-Thio-β-D-glucose tetraacetate ; et
• Les thiols pouvant être obtenus à partir de la réduction de disulfide, tel que le phenyldisulfide, le furfuryl disulfide.

Particularly, the hydrothiolation reactions can be carried out in the presence of a thermal initiator, an oxidation-reduction (redox) initiator or a photochemical initiator and an organic compound carrying a sulfhydryl group, in particular chosen from:

• Linear, branched, cyclic or aromatic alkanethiols containing 1 to 14 carbon atoms, such as methane-, ethane-, propane-, pentane-, cyclopentane-, hexane-, cyclohexane-, heptane-, octane, phenylethane-, 4- tert-butylphenylmethane-, 2-furanmethane-thiol, preferably hexane-, cyclohexane-, heptane-, octane, phenylethane-, 4-tert-butylphenylmethane-, 2-furanmethane-thiol;
• Organosiloxanes carrying a thiol function, such as (3-mercaptopropyl)trimethoxysilane, (3-Mercaptopropyl)methyldimethoxysilane, 2-(Triethoxysilyl)ethanethiol, mercaptopropyl-isobutyl-POSS;
• Thiolated silicone oils, in particular those described in the document DOI: 10.1016/j.actbio.2015.01.020);
• Thiolated oligomers or polymers carrying a reactive function, such as an amine, an alcohol, an acid, a halogen, a thiol, an epoxide, a nitrile, an isocyanate, a heteroatom, preferably cysteine, cysteamine, N -acetylcysteamine, 2-Mercaptoethanol, 1-Mercapto-2-propanol, 8-Mercapto-1-octanol, thiolactic acid, thioglycolic acid, mercapto-3-propionic acid, 11-mercaptoundecanoic acid, polyethylene glycol dithiol, 3-Mercaptopropionitrile, 1,3-Propanedithiol, 4-Cyano-1-butanethiol, 3-Chloro-1-propanethiol, 1-Thio-β-D-glucose tetraacetate; And
• Thiols obtainable from the reduction of disulfide, such as phenyldisulfide, furfuryl disulfide.

As an initiator, we can cite for example: tert-butyl peroxy-2-ethylhexanoate, cumin perpivalate, tert-butyl peroxylaurate, benzoyl peroxide, lauroyl peroxide, octanoyl peroxide, di-tert-peroxide butyl, tert-butylcumyl peroxide, dicumyl peroxide, 2,2'-azobis isobutyronitrile, 2,2'-azobis(2-methylbutyronitrile), 2,2'-azobis(2,4-dimethylvaleronitrile), 2,2' -azobis(4-methoxy-2,4-dimethylvaleronitrile), 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane, 1,1-bis(tert-butylperoxy)cyclohexane, 1,4-bis (tert-butylperoxycarbonyl)cyclohexane, 2,2-bis(tert-butylperoxy)octane, 4,4-bis(tert-butylperoxy)valerate of n-butyl, 2,2-bis(tert-butylperoxy)butane, 1,3 -bis(tert-butylperoxyisopropyl)benzene, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 2,5-dimethyl-2,5-di(benzoylperoxy)hexane, di-tert-diperoxy isophthalate butyl, 2,2-bis(4,4-di-tert-butylperoxycyclohexyl)propane, di-tert-butyl peroxy-α-methylsuccinate, di-tert-butyl peroxydimethylglutarate, di-tert-butyl peroxyhexahydroterephthalate, di-tert-butyl peroxyazelate di-tert-butyl, 2,5-dimethyl-2,5-di(tertbutylperoxy)hexane, diethylene glycol bis(tert-butylperoxycarbonate), di-tert-butyl peroxytrimethyladipate, tris(tertbutylperoxy) triazine, vinyltris(tert-butylperoxy )silane phenothiazine, tetracene, perylene, anthracene, diphenyl-9-10-anthracene, thioxanthone, benzophenone, acetophenone, xanthone, fluorenone, anthraquinone, 9, 10-dimethylanthracene, 2-ethyl-9, 10-dimethyloxyanthracene, 2, 6- dimethyl- naphthalene, 2, 5-diphenyl-1-34-oxadiazole, xanthopinacol, 1, 2-benzanthracene, 9-nitro-anthracene. Each of these primers can be used alone or in combination with others.

The chemical reactions mentioned above are known to those skilled in the art. We can cite in particular the following documents: Synthesis and preparation of PHAs modified with polyethylene glycol dithiol: 10.1021/acs.biomac.9b00479; Biomacromolecules , 19 , 3536–3548 (2018); Synthesis and preparation of PHAs modified with mercaptohexanol: 10.1021/acs.biomac.8b01257; Biomacromolecules , 20 , 2, 645–652 (2019); Synthesis and preparation of PHAs modified with Hydroxy-, Cinnamic Acid-, Sulfate-, and Zosteric Acid: 10.1021/bm049962e; Biomacromolecules , 5 , 4, 1452–1456 (2004); Radical addition of methyl methacrylate to a PHOUn: 10.1002/1521-3935(20010701)202:11<2281::AID-MACP2281>3.0.CO;2-9; Macromolecular Chemistry and Physics, vol. 202, 11 , 2281-2286 (2001); Synthesis and preparation of PHAs modified with a polysilsesquioxane (POSS): 10.1016/j.polymer.2005.04.020; Polymer Vol. 46, 14 , 5025-5031 (2005); Grafting of thio-beta-glucose on unsaturated side chains: 1022-1336/99/0202–0091$17.50+.50/0; Macromol. Rapid Commun., 20 , 91–94 (1999)
And or
B) by oxidation reactions controlled or not, for example with permanganates of concentrated or diluted alkaline agent, or ozonolysis, oxidation in the presence of a reducing agent, and make it possible to obtain new materials having in terminal position side chains of hydroxy, epoxide or carboxy groups.

The chemical reactions mentioned above are known to those skilled in the art. We can cite in particular the following documents: 10.1021/bm049337; Biomacromolecules , vol. 6, 2 , 891–896 (2005); 10.1016/S0032-3861(99)00347-X; Polymer , vol. 41, 5 , 1703-1709 (2000); 10.1021/ma9714528 and 10.1016/S1381-5148(97)00024-2; Macromolecules , 23, 15, 3705–3707 (1990); 10.1016/S0032-3861(01)00692-9; Polymer , vol 43, 4 , 1095-1101 (2002); 10.1016/S0032-3861(99)00347-X; Polymer, vol 41, 5 , 1703-1709 (2000); and 10.1021/bm025728h ; Biomacromolecules , vol 4, 2 , 193–195 (2003).

Example of functionalization of PHA copolymers according to the invention from PHA copolymer with a hydrocarbon chain with an epoxy group according to the following diagram 2:

[Chem. 9]:

Scheme 2 in which Y, m, n, q’, and R2 are as defined in scheme 1.

The epoxidized structure can be obtained by conventional method known to those skilled in the art, whether by biotechnological processes, or by chemical means such as the oxidation of unsaturation as mentioned previously. The peroxide group(s) can react with carboxylic acids, maleic anhydrides, amines, alcohols, thiols, isocyanates, all of these reagents comprising at least one C ₁ -C ₂₀ hydrocarbon chain, linear or branched, cyclic or acyclic, saturated or unsaturated, or carried by an oligomer or polymer in particular amino (poly)saccharides such as compounds derived from chitosan and (poly)sil(ox)anes; 3-glycidyloxypropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-(trimethoxysilyl)propylcarbamic acid, diethanolamine, 3-mercapto-1-propanesulfonate of alkali or alkaline earth salts such as sodium. the water.

• Préparation de PHA portant des charges à partir de diéthanolamine : 10.1021/bm8005616,Biomacromolecules, vol 9,8, 2091–2096 (2008) ;
• Préparation de PHA portant des charges à partir de 3-mercapto-1-propanesulfonate de sodium : 10.1021/acs.biomac.9b00870Biomacromolecules, vol 20, 9, 3324–3332 (2019);
• Préparation de PHA comportant un motif époxyde natif: 10.1016/S1381-5148(97)00024-2) ;Reactive and Functional Polymers,vol 34,1, 65-77 (1997)

We can cite in particular the following documents:

• Preparation of charged PHA from diethanolamine: 10.1021/bm8005616, Biomacromolecules , vol 9, 8 , 2091–2096 (2008);
• Preparation of charged PHA from sodium 3-mercapto-1-propanesulfonate: 10.1021/acs.biomac.9b00870 Biomacromolecules , vol 20, 9, 3324–3332 (2019);
• Preparation of PHA comprising a native epoxy unit: 10.1016/S1381-5148(97)00024-2); Reactive and Functional Polymers, vol 34, 1 , 65-77 (1997)

Example of functionalization of PHA copolymers according to the invention from PHA copolymer with a hydrocarbon chain with a nucleofuge group according to the following diagram 3:

[Chem. 10]:

Scheme 3 in which Y, m, n, q', and R ² are as defined in scheme 1. M corresponds to a nucleofuge group, organic or inorganic, which can be substituted by a nucleophilic group, preferably said nucleophile is a heteroatom electron donor by +I and/or +M effect such as O, S, or N. Preferably the nucleofuge M is chosen from halogen atoms such as Br, and mesylate, tosylate or triflate groups. This is a reaction known to those skilled in the art. We can cite for example the following document 10.1016/j.ijbiomac.2016.11.118, International Journal of Biological Macromolecules , vol 95, 796-808 (2017).

Example of functionalization of PHA copolymers according to the invention from PHA copolymer with a hydrocarbon chain with a cyano group according to the following diagram 4:

[Chem. 11]:
:

Scheme 4 in which Y, m, n, q', Y and R ² are as defined in scheme 1.

In a first step i) the PHA copolymer with a side chain with a cyano or nitrile group reacts with an organoalkaline or organomagnesium compound Y-MgHal, Y-Li, or Y-Na, followed by hydrolysis to lead to the PHA copolymer with a side chain with group Y grafted with a ketone function. The ketone function can be changed to thioketone by thionation for example with S8 in the presence of amine, or with Lawesson's reagent. The latter after total reduction ii) (for example by Clemensen reduction) leads to the PHA copolymer with a side chain with a Y group grafted with an alkylene group. Or the latter can be reduced in a gentle manner iii) by a conventional reducer to lead to the PHA copolymer with a side chain with a Y group grafted with a hydroxyalkylene group. The cyano group of the starting PHA copolymer can react with water after hydration v) to lead to the amide derivative, after hydrolysis iv) to the carboxy derivative. The cyano group of the starting PHA copolymer can also after reduction vi) lead to the amine derivative or the ketone derivative. The PHA copolymers with a nitrile-functional hydrocarbon side chain are prepared by conventional methods known to those skilled in the art. We can for example cite the document: 10.1016/0378-1097(92)90311-B, FEMS Microbiology Letters , vol. 103, 2-4 , 207-214 (1992).

Example of functionalization of PHA copolymers according to the invention from PHA copolymer with a hydrocarbon chain at the end of the chain according to the following diagram 5:

[Chem. 12]:

Scheme 5 in which R ¹ , R ² , m, n and Y are as defined above, and R' ¹ represents a hydrocarbon chain chosen from i) (C ₁ -C ₂₀ ) alkyl, linear or branched, ii) (C ₂ -C ₂₀ )alkenyl, linear or branched, iii) (C ₂ -C ₂₀ )alkynyl, linear or branched, iii) preferably the hydrocarbon group is linear; said hydrocarbon chain being substituted by one or more atoms or groups chosen from: a) halogen such as chlorine or bromine, b) hydroxy, c) thiol, d) (di)(C ₁ -C ₄ )(alkyl)amino, e ) (thio)carboxy, f) (thio)carboxamide –C(O)-N(R _a ) ₂ or –C(S)-N(R _a ) ₂ , f) cyano, g) iso(thio)cyanate, h) (hetero)aryl such as phenyl or furyl, and i) (hetero)cycloalkyl such as anhydride, or epoxide, j) cosmetic active chosen from colored or uncolored, fluorescent or non-fluorescent chromophores such as those from optical brighteners, or chromophores from UVA and/or UVB filters, anti-aging active ingredients.

• Préparation d’oligomères de PHAs par dégradation thermique : 10.1021/bm0156274 ;Biomacromolecules, vol 3,1, 219–224 (2002) ;
• Préparation d’oligomères de PHAs par transestérification : 10.1021/ma011420r,Macromolecules, vol 35,3, 684–689 (2002) ;
• Préparation d’oligomères de PHAs par hydrolyse : 10.1016/0032-3861(94)90590-8Polymer vol 35, 19, 4156-4162 (1994) ;
• Préparation d’oligomères de PHAs par méthanolyse : 10.1021/bm060981t,Biomacromolecules, vol 8,4, 1255–1265 (2007) ;

These grafts at the end of the chain are known on PHA polymers by those skilled in the art. For example, we can cite the following documents:

• Preparation of PHAs oligomers by thermal degradation: 10.1021/bm0156274; Biomacromolecules , vol 3, 1 , 219–224 (2002);
• Preparation of PHA oligomers by transesterification: 10.1021/ma011420r, Macromolecules , vol 35, 3 , 684–689 (2002);
• Preparation of PHA oligomers by hydrolysis: 10.1016/0032-3861(94)90590-8Polymer vol 35, 19, 4156-4162 (1994);
• Preparation of PHA oligomers by methanolysis: 10.1021/bm060981t, Biomacromolecules , vol 8, 4 , 1255–1265 (2007);

• Synthèse et caractérisation de PHA greffé avec de l’acide ascorbique : 10.1016/j.ijbiomac.2018.11.052 ;International journal of biological macromolecules, vol 123: 7 (2019) ;
• Préparation de copolymères PHB-b-PHO par polycondensation avec du divinyl adipate catalysée par une lipase : 10.1021/bm9011634,Biomacromolecules, vol 10,12, 3176–3181 (2009) ;
• Synthèse de copolymères PHB-b-PHO couplés par une jonction diisocyanate : 10.1021/ma012223v ;Macromolecules, vol 35,13, 4946–4950 (2002) ;
• Préparation d’oligomères de PHO sur du chitosan par condensation entre l’extrémité acide carboxylique du PHO et les fonctions amines du chitosan : 10.1002/app.24276 ;Journal of Applied Polymer Science, vol 103,1, (2006);
• Transestérification des PHAs par l’alcool propargylique afin de produire des oligomères de PHAs modifiables par chimie « click » : 10.1016/j.reactfunctpolym.2011.12.005 ;Reactive and Functional Polymers ,vol 72, 2, , 160-167 (2012) ;
• Préparation de copolymère PHO-b-PCL : 10.1002/mabi.200400104 ;Macromolecular Bioscience, vol 4,11(2004) ;
• Préparation de copolymère PHO-b-PEG : 10.1002/macp.201000562 ;Macromolecular Chemistry and Physics; vol 212, 3, (2010) ;
• Epoxydation d’insaturation en bout de chaine et greffage d’acide en bout de chaine : 10.14314/polimery.2017.317 ;Polimery, vol 62,4, 317-322 (2017) ;
• Greffage de motif organosiloxane en bout de chaine sur PHA : 10.1016/j.reactfunctpolym.2014.09.008 ;Reactive and Functional Polymers,vol 84, 53-59 (2014).

We can also cite other methods known to those skilled in the art:

• Synthesis and characterization of PHA grafted with ascorbic acid: 10.1016/j.ijbiomac.2018.11.052; International journal of biological macromolecules , vol 123: 7 (2019);
• Preparation of PHB-b-PHO copolymers by lipase-catalyzed polycondensation with divinyl adipate: 10.1021/bm9011634, Biomacromolecules , vol 10, 12 , 3176–3181 (2009);
• Synthesis of PHB-b-PHO copolymers coupled by a diisocyanate junction: 10.1021/ma012223v; Macromolecules , vol 35, 13 , 4946–4950 (2002);
• Preparation of PHO oligomers on chitosan by condensation between the carboxylic acid end of PHO and the amine functions of chitosan: 10.1002/app.24276; Journal of Applied Polymer Science , vol 103, 1 , (2006);
• Transesterification of PHAs with propargyl alcohol in order to produce PHA oligomers that can be modified by “click” chemistry: 10.1016/j.reactfunctpolym.2011.12.005; Reactive and Functional Polymers , vol 72, 2, 160-167 (2012);
• Preparation of PHO-b-PCL copolymer: 10.1002/mabi.200400104; Macromolecular Bioscience , vol 4, 11 (2004);
• Preparation of PHO-b-PEG copolymer: 10.1002/macp.201000562; Macromolecular Chemistry and Physics ; vol 212, 3, (2010);
• Epoxidation of unsaturation at the end of the chain and acid grafting at the end of the chain: 10.14314/polimery.2017.317; Polimery , vol 62, 4 , 317-322 (2017);
• Grafting of organosiloxane motif at the end of the chain on PHA: 10.1016/j.reactfunctpolym.2014.09.008; Reactive and Functional Polymers, vol 84, 53-59 (2014).

All of the grafted PHA copolymers of the invention described previously, according to diagram 6:

[Chem. 13]:

Scheme 6 in which R' ¹ , R ² , m, n and Y are as defined previously, and
X ' represents an atom or reactive group likely to react with an atom or electrophilic group E or nucleophilic nucleophilic to create a convincing bond σ if x' is an electrophilic or nucleofuge group so it can react with a reagent r ' ¹ - naked, if X' is a Nu nucleophilic group so it can react with R' ¹ - E to create a covalent bond Σ;

As an example, the covalent bonds or Σ bonding group that can be generated are listed in the table below from the condensation of electrophiles with nucleophiles:

[Painting. 1]:

It is also possible, from a PHA functionalized in the side chain, to carry out grafting at the end of the chain in a second step as described in diagram 7. The converse is also true, where grafting at the end of the chain is possible in a first step, then the functionalization of functionalizable pendant side chain is carried out in a second step.

[Chem. 14]:
Scheme 7 in which R' ¹ , R ² , m, n and Y are as defined previously, and

• Synthèse et préparation de PHAs modifiés par thiol-ène, puis réaction sur nouvelle fonction greffée : 10.1021/ma0304426 ;Macromolecules, vol 37,2, 385–389 (2004) ;
• Greffage de PEG et de PLA sur de PHAs fonctionnalisés avec des acides : 10.1002/marc.200900803 et 10.1002/mabi.200390033 ;
• Synthèse et préparation de PHAs modifiés avec du polyéthylène glycol dithiol : 10.1021/acs.biomac.9b00479.

All these chemical reactions are known to those skilled in the art. For example, we can cite the following documents:

• Synthesis and preparation of PHAs modified by thiol-ene, then reaction on new grafted function: 10.1021/ma0304426; Macromolecules , vol 37, 2 , 385–389 (2004);
• Grafting of PEG and PLA onto PHAs functionalized with acids: 10.1002/marc.200900803 and 10.1002/mabi.200390033;
• Synthesis and preparation of PHAs modified with polyethylene glycol dithiol: 10.1021/acs.biomac.9b00479.

b) The modified polysaccharide(s)

The composition of the invention comprises one or more modified polysaccharide(s).

Preferably, the polysaccharide(s) are thickening polymers.

By “ thickening polymer ” is meant a polymer which is introduced at 1% by weight into an alcoholic or lipoalcoholic solution containing 50% ethanol, or into an oil chosen from petroleum jelly, isopropyl myristate, octyldodecanol or cyclopentadimethylsiloxane, makes it possible to achieve a viscosity of at least 100 cps, preferably at least 500 cps, at 25 °C and at a shear rate of 1 s-1. This viscosity can be measured using a cone/plane viscometer (Haake R600 rheometer or similar).

The polysaccharide(s) useful for the invention are cationic, non-ionic, anionic or amphoteric polymers, preferably cationic, non-ionic or anionic, preferably non-ionic, modified by the presence of at least one aliphatic hydrocarbon chain, cyclic or non-cyclic. , linear or branched, saturated or unsaturated, aromatic or not, comprising from 2 to 30 carbon atoms optionally substituted by one or more atoms or groups a), f), g), h), i), j), l) as defined for R ¹ of (A) and/or p) (di)alkylamino and/or optionally interrupted by one or more heteroatoms or groups a') to c') as defined for R ¹ of (A).

The “ polysaccharides ” are as defined above, in addition the ose units -[C _x (H ₂ O) _y )] _w - or -[(CH ₂ O) _x ] _w -, are optionally modified by substitution, by oxidation , by dehydration, and/or by reduction.

As possible units of the polysaccharide(s) useful for the invention, we can preferably cite glucose; galactose; arabinose; rhamnosis; mannose; xylose; fucose; anhydrogalactose; galacturonic acid; glucuronic acid; mannuronic acid; galactose sulfate; anhydrogalactose sulfate and fructose.

Mention may in particular be made of polysaccharides modified from native gums such as those derived from exudates of trees or shrubs, algae, seeds or tubers, mushrooms, bacteria, animal organisms, plants, which have been modified by physical, chemical or enzymatic reactions.
Native erasers that can be chosen from:
- gum arabic (branched polysaccharide of galactose, arabinose, rhamnose and glucuronic acid);
- ghatti gum (polymer from arabinose, galactose, mannose, xylose and glucuronic acid);
- karaya gum (polymer from galacturonic acid, galactose, rhamnose and glucuronic acid);
- tragacanth (or tragacanth) gum (polymer of galacturonic acid, galactose, fucose, xylose and arabinose);
- agar (polymer derived from galactose and anhydrogalactose);
- alginates (polymers of mannuronic acid and glucuronic acid);
- carrageenans and furcelleranes (polymers of galactose sulfate and anhydrogalactose sulfate);
- guar gum (mannose and galactose polymer);
- locust bean gum (mannose and galactose polymer);
- fenugreek gum (mannose and galactose polymer);
- tamarind gum (polymer of galactose, xylose and glucose);
- konjac gum (glucose and mannose polymer);
- xanthan gum (polymer of glucose, mannose acetate, mannose/pyruvic acid and glucuronic acid) or dehydroxanthan gum;
- gellan gum (polymer of partially acylated glucose, rhamnose and glucuronic acid);
- scleroglucan gum (glucose polymer);:
- cellulose (glucose polymer);
- starch (glucose polymer);
- inulin and
- pectin.

In particular, the modified polysaccharides come from: i) gum arabic; ii) ghatti gum; iii) karaya gum; iv) tragacanth gum; v) agar; vi) alginates; vii) carrageenans and furcellerans; viii) guar gum; ix) locust bean gum; x) fenugreek gum; xi) tamarind gum; xii) konjac gum; xiii) xanthan gum or dehydroxanthan gum; xiv) gellan gum; xv) scleroglucan gum; xvi) cellulose; xvii) starch; xviii) inulin; and xix) pectin; preferably chosen from xvi), xvii) and xviii), more preferably xvii).

The starch molecules xvii) used in the present invention can have as botanical origin cereals or even tubers. Thus, the starches are for example chosen from corn, rice, cassava, barley, potato, wheat, sorghum and pea starches.

Starches can be modified chemically or physically: in particular by one or more of the following reactions: pregelatinization, oxidation, crosslinking, esterification, etherification, amidification, heat treatments.

According to one embodiment of the invention, the modified polysaccharide(s) b) are non-ionic.

These polymers can be modified physically or chemically. As a physical treatment, we can cite in particular temperature.

As chemical treatments we can cite esterification, etherification, amidification, oxidation, metathesis and addition reactions. These treatments make it possible to produce polymers which may in particular be nonionic, anionic or amphoteric.

Preferably these chemical or physical treatments are applied to guar gums, locust bean gums, starches and celluloses.

The modifiable starch molecules which can be used to produce modified starches according to the present invention may have cereals or even tubers as botanical origins. Thus, the starches are for example chosen from corn, rice, cassava, barley, potato, wheat, sorghum and pea starches.

Starches can be modified chemically or physically: in particular by one or more of the following reactions: pregelatinization, oxidation, crosslinking, esterification, etherification, amidification, heat treatments.

Starch molecules xvii) can come from all plant sources of starch such as corn, potatoes, oats, rice, tapioca, sorghum, barley or wheat which have been modified to link at least one aliphatic hydrocarbon chain, cyclic or non-cyclic, linear or branched, saturated or unsaturated, aromatic or not, comprising from 6 to 30 carbon atoms optionally substituted by one or more atoms or groups a), f) , g), h), i), j), l) as defined for R ¹ of (A) and/or p) (di)alkylamino and/or optionally interrupted by one or more heteroatoms or groups a') to c') as defined for R ¹ of (A). The hydrolysates of the starches mentioned above can also be used. The modified starch preferably comes from potato starch.

According to one embodiment, the modified polysaccharides b) are ethers of polysaccharides called alkyl polysaccharides whose alkyl radical comprises between 2 and 30, preferably between 2 and 10, more preferably between 2 and 6 carbon atoms.

Preferably the alkyl polysaccharides b) according to the invention are derived from cellulose or guar or mixtures thereof.

According to one embodiment, the modified polysaccharides b) are alkylcelluloses whose linear or branched alkyl residue comprises between 1 to 10 carbon atoms, in particular between 2 and 6 carbon atoms, preferably between 2 and 3 carbon atoms. .

Alkyl cellulose is an alkyl ether of cellulose comprising a chain made up of β-anhydroglucose units linked together by acetal bonds. Each anhydroglucose unit has three replaceable hydroxyl groups, all or part of these hydroxyl groups can react according to the following reaction:
Cell-OM + R-Hal Cell-OR + MHal
with Hal representing a halogen such as Cl with M representing a cationic counterion such as an alkali metal Na or K, or an alkaline earth metal, preferably an alkali metal such as Na, Cell representing a polysaccharide radical such as cellulose, where R represents a linear or branched alkyl group, comprising from 1 to 10 carbon atoms, preferably between 2 and 3 carbon atoms such as methyl or ethyl, and MHal the generated salt such as sodium chloride.

Advantageously, the alkylcellulose is chosen from ethylcellulose and propylcellulose. According to a particularly preferred embodiment, the alkylcellulose is ethylcellulose. It is an ethyl ether of cellulose.

The total substitution of the three hydroxyl groups would lead for each anhydroglucose unit to a degree of substitution of 3, in other words to a content of alkoxy groups of between 40% and 60%, particularly around 55% (54.88%).

The ethylcellulose polymers used in a C1 or C'1 composition according to the invention are preferably polymers having a degree of substitution in ethoxy groups ranging from 2.5 to 2.6 per anhydroglucose unit, in other words comprising a content of groups ethoxy ranging from 44 to 50%.

According to a particular embodiment of the invention, the modified polysaccharide of the invention is an ethylcellulose in powder form. It is for example marketed under the trade names ETHOCEL Standard from Dow Chemicals, including ETHOCEL Standard 7 FP Premium and ETHOCEL standard 100 FP Premium. Other commercially available products, such as those marketed by Ashland, Inc., under the names Aqualon Ethylcellulose type-K, type-N and type-T, preferably type-N, such as N7, N100, are particularly suitable to the realization of the invention.

According to another embodiment, the polysaccharide ethers are alkyl guars i.e. guar gums viii) modified by substitution of hydroxy hydrogen with a linear or branched alkyl group, comprising between 1 to 10 carbon atoms, in particular between 2 and 6 carbon atoms, preferably between 2 and 3 carbon atoms such as 2 carbon atoms.

The alkylguar polymers used in a C1 or C'1 composition according to the invention are preferably ethylguar.

Ethylguar is known under the name INCI: C ₁ -C ₅ alkyl galactomannan.

It more particularly has a degree of substitution of 2 to 3, and in particular of 2.5 to 2.8.

Alkylated guar gums (with C ₁ -C ₆ alkyl group), including ethylguar, are described in particular in patent application EP 708114 and document RD9537807 (October 1995), as well as their preparation process.

According to one embodiment, the modified polysaccharides b) are polysaccharide esters, in particular esters obtained by reaction between at least one polysaccharide such as dextrin with at least one linear or branched saturated or unsaturated acid and comprising from 2 to 30 carbon atoms, in particular from 10 to 30 carbon atoms.

According to a particular embodiment, the modified polysaccharides of the invention are chosen from xvi) cellulose or its derivatives such as hydroxy(C ₁ -C ₅ ) alkylcelluloses, xvii) starch and xviii) inulin; said polysaccharides xvi), xvii) and xviii) comprising at least one C ₈ -C ₃₀ fatty chain, such as alkyl, arylalkyl, alkylaryl groups or mixtures thereof or linear or branched, preferably linear, C ₈ alkyl groups -C ₃₀ and in particular:

According to a particular embodiment of the invention, the modified polysaccharide(s) are chosen from saccharide or polysaccharide mono- or polyalkyl esters.

Among the mono or polyalkyl esters of saccharide or polysaccharide suitable for the implementation of the invention, mention may be made of alkyl or polyalkyl esters of dextrin or inulin.

• nest un entier supérieur ou égal à 2, de préférence allant de 3 à 200, notamment allant de 20 à 150, et en particulier allant de 25 à 50,
• R ₁ ,R ₂ etR ₃ , identiques ou différents, sont choisis parmi l'hydrogène ou un groupe acyle (R-C(O)-) dans lequel le radical R est un groupe hydrocarboné, linéaire ou ramifié, saturé ou insaturé, possédant de 7 à 29, en particulier de 7 à 21, notamment de 11 à 19, plus particulièrement de 13 à 17, voire 15, atomes de carbone, étant entendu qu'au moins un desdits radicaux R₁, R₂ou R₃est différent de l'hydrogène.

It may in particular be a mono-or polyester dextrin (dextrin being derived from starch xvii) and at least one fatty acid (such as RC(O)-OH) and in particular meeting the following formula (XVIII) :
(XVIII)
Formula (XVIII) in which:

• n is an integer greater than or equal to 2, preferably ranging from 3 to 200, in particular ranging from 20 to 150, and in particular ranging from 25 to 50,
• R ₁ , R ₂ and R ₃ , identical or different, are chosen from hydrogen or an acyl group (RC(O)-) in which the radical R is a hydrocarbon group, linear or branched, saturated or unsaturated, having 7 to 29, in particular from 7 to 21, in particular from 11 to 19, more particularly from 13 to 17, or even 15, carbon atoms, it being understood that at least one of said radicals R ₁ , R ₂ or R ₃ is different hydrogen.

In particular, R ₁ , R ₂ and R ₃ represent a hydrogen atom or an acyl group (RC(O)-) in which R is a hydrocarbon radical as defined above, provided that at least two of said radicals R ₁ , R ₂ or R ₃ are different from hydrogen.

All of the radicals R ₁ , R ₂ and R ₃ can represent an identical or different acyl group (RC(O)), and the acyl groups are in particular identical.

In particular, n previously described advantageously varies from 25 to 50, in particular is equal to 38 in the general formula of the saccharide ester usable in the present invention.

In particular when the radicals R ₁ , R ₂ and/or R ₃ , identical or different, represent an acyl group (RC(O)), derived from fatty carboxylic acid RC(O)OH preferably chosen from caprylic, capric, Lauric, myristic, palmitic, stearic, arachic, behenic, isobutyric, isovalic, ethyl-2 butyric, ethylmethylacetic, isoheptanoic, ethyl-2 hexanoic, isononanoic, isodecanoic, isotridean, isomyristic, isostearic, isoaric ohexanoic, decadenoic, dodenoic, tetradecenoic, myristoleic, hexadecenoic, palmitoleic, oleic, elaidic, asclepinic, gondoleic, eicosenoic, sorbic, linoleic, linolenic, punicic, stearidonic, arachidonic, stearolic, and mixtures thereof.

Preferably, at least one dextrin palmitate is used as ester of dextrin and fatty acid(s). This can be used alone or mixed with other esters.

Advantageously, the ester of dextrin and fatty acid has a degree of substitution less than or equal to 2.5 on the basis of a glucose unit, in particular varying from 1.5 to 2.5, preferably from 2 to 2 ,5. The weight average molecular weight of the dextrin ester may in particular be from 10,000 to 150,000, in particular from 12,000 to 100,000 and even from 15,000 to 80,000.

Preferably the modified polysaccharide(s) b) of the invention are dextrin esters or dextrin palmitates.

Dextrin esters, in particular dextrin palmitates, are available commercially under the name RHEOPEARL KL2®, MKL2®, TL® or KL® from the company Chiba Flour.

According to one embodiment, the modified polysaccharide b) is a modified dextrin, preferably a dextrin ester, more particularly an ester of dextrin and saturated or unsaturated, linear or branched C ₁₂ -C ₂₄ fatty acid.

Preferably, the dextrin ester is chosen from esters of saturated or unsaturated, linear or branched C ₁₄ -C ₂₄ fatty acids such as myristic acid, palmitic acid or their mixture. According to one embodiment the dextrin ester is chosen from dextrin Palmitate such as RHEOPEARL KL2 and RHEOPEARL TL2 marketed by CHIBA FLOUR, dextrin myristate such as that marketed under the reference Rheopearl MKL2 by CHIBA FLOUR, dextrin palmitate/ethylhexanoate marketed under the reference RHEOPEARL TT2, dextrin palmitate/hexyldecanoate marketed under the reference RHEOPEARL WX or their mixtures.

According to a preferred embodiment, the modified polysaccharide b) designates dextrin palmitate

According to one embodiment, the modified polysaccharide is a modified inulin, preferably an inulin ester, more particularly an ester of inulin and of saturated or unsaturated, linear or branched C ₁₂ -C _{24 fatty} acid.

Preferably, the inulin ester is chosen from esters of saturated or unsaturated, linear or branched C ₁₄ -C ₂₄ fatty acids such as myristic acid, palmitic acid, stearic acid, preferably stearic acid, or their mixture.

According to one embodiment, the inulin ester is a stearoyl inulin such as the references REOPEARL ISK2 and RHEOPEARL ISL2 marketed by CHIBA FLOUR or their mixtures.

According to one embodiment, the modified polysaccharide is a modified cellulose, preferably a cellulose ester, more particularly an ester of cellulose and a saturated or unsaturated, linear or branched C ₂ -C ₂₄ acid.

Preferably, the cellulose ester is chosen from saturated or unsaturated, linear or branched C ₂ -C ₁₀ , preferably C ₂ -C ₆ , particularly C ₂ -C ₄ , acid esters such as acetic acid. , butyric acid or their mixture.

According to one embodiment, the cellulose ester is a cellulose acetate butyrate such as the reference EASTMAN CELLULOSE ACETATE BUTYRATE marketed by EASTMAN CHEMICAL.

Among the polysaccharide esters, we can also cite pullulan esters. Pullulan is a polysaccharide made up of maltotriose units.

According to one embodiment, the modified polysaccharides b) are polysaccharide esters. By polysaccharide esters we mean polysaccharides in which at least one of the hydroxy radicals is esterified by an acid to form -O-C(O)-R or -C(O)-OR ester groups in which R denotes a saturated radical or unsaturated from 2 to 30 carbon atoms, in particular 11 to 19 carbon atoms, preferably 12 to 17 carbon atoms such as 13 carbon atoms.

Advantageously, the polysaccharide ester is myristoyl pullulan.

According to another embodiment, the modified polysaccharide(s) b) of the invention are cationic. Preferably these chemical or physical treatments to obtain at least one cationic group are applied to guar gums, locust bean gums, starches and celluloses.

The cationic groups can be of the primary, secondary, tertiary or quaternary amine type, preferably quaternary, and comprise a C ₆ -C ₃₀ aliphatic chain.

According to a particular embodiment of the invention, the modified polysaccharide(s) b) are chosen from quaternized (poly)hydroxyethylcelluloses modified by groups comprising at least one aliphatic (or fatty chain), such as alkyl, arylalkyl, alkylaryl having at least 8 carbon atoms, or mixtures thereof. The alkyl radicals carried by quaternized celluloses or hydroxyethylcelluloses preferably contain from 8 to 30 carbon atoms. Aryl radicals preferably denote phenyl, benzyl, naphthyl or anthryl groups. Examples of quaternized alkylhydroxyethyl celluloses with C ₈ -C ₃₀ fatty chains can be given, such as the products QUATRISOFT LM 200, QUATRISOFT LM-X 529-18-A, QUATRISOFT LM-X 529-18-B  (C ₁₂ alkyl) and QUATRISOFT LM-X 529-8 (C ₁₈ alkyl) sold by the company Dow Corning, the products CRODACEL QM, CRODACEL QL (C ₁₂ alkyl) and CRODACEL QS (C 12 alkyl) in C ₁₈ ) sold by the company CRODA and the product SOFTCAT SL 100 sold by the company Dow Corning.

The non-ionic guar gums which can be used according to the invention can be modified by (poly)hydroxylakylammonium groups in C ₁ -C ₂₀ , preferably (poly)hydroxyalkyl in C ₁ -C ₆ , we can in particular mention as example, the halide groups of hydroxymethyltrimmonium, hydroxyethyltrimmonium, hydroxypropyltrimmonium and hydroxybutyltrimmonium, preferably Hydroxypropyltrimonium halide, preferably chloride.

Such cationic guar gums modified by hydroxyalkylammonium groups are for example sold by the company Solvay under the trade names Cationique Jaguar® C-14S Guar Hydroxypropyltrimonium Chloride F Jaguar® C-13S Guar Hydroxypropyltrimonium Chloride F Jaguar® C-17 Guar Hydroxypropyltrimonium Chloride Jaguar® Excel Guar Hydroxypropyltrimonium Chloride Jaguar® C-500 STD Guar Hydroxypropyltrimonium Chloride Jaguar® C-162 Hydroxypropyl Guar Hydroxypropyltrimonium Chloride Jaguar® Optima Guar Hydroxypropyltrimonium Chloride Jaguar® LS Hydroxypropyl Guar Hydroxypropyltrimonium Chloride.

The total quantity of the modified polysaccharide(s) present in the composition C1 or C'1 according to the invention preferably ranges from 0.05% to 20% by weight, more preferably from 0. 1% to 15% by weight, even more preferably 0.2 to 12% by weight, and in a particularly preferred manner 0.5% to 10% by weight relative to the total weight of the composition.

The weight ratio between the total quantity of PHA (active material) and the total quantity of the modified polysaccharide(s) b), present in the composition according to the invention, preferably ranges from 0.1 to 200, more preferably 0.2 to 100, and more preferably from 0.5 to 40 such as 4.
c) Fatty substances

The composition further comprises one or more fatty substances.

By “ fatty substance ” is meant an organic compound insoluble in water at ordinary room temperature (25°C) and at atmospheric pressure (760 mm Hg) (solubility less than 5% and preferably 1% again). more preferably at 0.1%). They have in their structure at least one hydrocarbon chain comprising at least 6 carbon atoms or a chain of at least two siloxane groups. In addition, fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, such as for example chloroform, ethanol, benzene, petroleum jelly or decamethyl cyclopentasiloxane.

The fatty substance(s) of the invention are of natural or synthetic origin, preferably natural, more preferably of plant origin. They are different from fatty acids because salified fatty acids constitute soaps that are generally soluble in aqueous media.

According to a particular embodiment of the invention, the composition comprises one or more fatty substances which are non-liquid at 25°C and at atmospheric pressure.
The wax(es)

According to a particular embodiment, the composition of the invention comprises one or more waxes.

By “ wax ” we mean a lipophilic compound, solid at room temperature (25°C), with a reversible solid/liquid state change, having a melting point greater than or equal to 30°C and up to 200°C. and in particular up to 120°C.

In particular, the wax(es) suitable for the invention may have a melting point greater than or equal to 45°C, and in particular greater than or equal to 55°C.

The composition according to the invention C1 or C1' preferably comprises a wax content(s) ranging from 0.5% to 30% by weight relative to the total weight of the composition, in particular from 1% to 20%, plus particularly from 2% to 15%.

According to a particular form of the invention, the composition of the invention is solid, in particular anhydrous. It can then be in the form of a stick, polyethylene micro-waxes will be used in the form of crystallites with a form factor of at least 2 having a melting point ranging from 70 to 110°C and preferably 70 to 100°C. C, in order to reduce or even eliminate the presence of strata in the solid composition. These needle-shaped crystallites and in particular their dimensions can be characterized visually according to the following method.
The pasty compound(s)

According to a particular embodiment, the composition of the invention comprises one or more pasty compounds .

By “ pasty compound ” within the meaning of the present invention, is meant a lipophilic fatty compound with a reversible solid/liquid state change, presenting in the solid state an anisotropic crystalline organization, and comprising at a temperature of 23°C a fraction liquid and a solid fraction.

Preferably the composition contains one or more fatty substances c) which are hydrocarbon fatty substances which are liquid at 25°C and atmospheric pressure.

The liquid hydrocarbon fatty substance(s) are in particular chosen from hydrocarbons and C ₆ -C ₁₆ or with more than 16 carbon atoms up to 60 carbon atoms, preferably between C ₆ and C ₁₆ , and in particular alkanes , oils of animal origin, oils of vegetable origin, glycerides or fluorinated oils of synthetic origin, fatty alcohols, fatty acid and/or fatty alcohol esters, silicones. Particularly the liquid fatty substance(s) are chosen from non-silicone oils.

It is recalled that within the meaning of the invention, alcohols, esters and fatty acids more particularly present one or more hydrocarbon group(s), linear or branched, saturated or unsaturated. (s), comprising 6 to 60 carbon atoms, optionally substituted, in particular by one or more OH hydroxyl group(s) (in particular from 1 to 4 hydroxyl group(s). If they are unsaturated, these compounds can comprise one to three unsaturation(s), preferably 1 to 3 carbon-carbon double bonds, conjugated or not.

Concerning C alkanes₆-VS₁₆, the latter are linear or branched, possibly cyclic, preferably the fatty substance(s) c) of the invention are chosen from alkanes, linear or branched, in C₈-VS₁₄, more preferably in C₉-VS₁₃Again more preferably in C₉-VS₁₂. By way of example, we can cite hexane, decane, undecane, dodecane, tridecane, isoparaffins such as isohexadecane, isodecane or isododecane. Linear or branched hydrocarbons of more than 16 carbon atoms can be chosen from paraffin oils, vaseline oil, polydecenes, hydrogenated polyisobutene such as Parléam®.

Among the hydrocarbon liquid fatty substances c) having an overall solubility parameter according to the HANSEN solubility space less than or equal to 20 (MPa) ^1/2 , we can cite oils, which can be chosen from natural or synthetic oils , hydrocarbons, optionally fluorinated, optionally branched, alone or in a mixture.

According to a very advantageous embodiment, the composition of the invention comprises one or more fatty substances which are (are) one or more hydrocarbon oil(s). The oil(s) may be volatile or non-volatile.

According to a preferred embodiment of the invention, the fatty substance(s) c) are hydrocarbon oils, linear or branched, which are volatile, in particular chosen from undecane, decane, dodecane, isododecane, tridecane, and their mixture of different, volatile oils preferably comprising isododecane in the mixture, or a mixture of undecane and tridecane

According to another particular embodiment, the liquid fatty substance(s) c) are a mixture of a volatile hydrocarbon oil and a non-volatile hydrocarbon oil, the mixture of which preferably comprises dodecane or isododecane as volatile oil.

Particularly the fatty substance(s) c) of the invention are a mixture of C ₉ -C ₁₂ alkanes, preferably of natural origin, whose chains comprise from 9 to 12 carbon atoms, preferably linear or branched, in C ₉ -C ₁₂ . This mixture is notably known under the name INCI C ₉ -C ₁₂ ALKANE, CAS 68608-12-8, VEGELIGHT SILK® marketed by BioSynthIs. This biodegradable, volatile blend of oils obtained from coconut oil (viscosity is 0.9-1.1 cSt (40°C) and a flash point at 65°C).

According to one embodiment, composition C1 contains only liquid oils at 25°C and atmospheric pressure. According to another embodiment, composition C1 contains at least 80% of liquid oils at 25°C and atmospheric pressure hydrocarbons, preferably volatile, more preferably chosen from isodecane, decane, Cetiol UT®, VEGELIGHT SILK® .

According to another embodiment, composition C1 may comprise volatile and non-volatile oils, in particular in a volatile oil/non-volatile oil proportion greater than or equal to 4.

According to another embodiment, composition C1 contains 0 to 10% silicone oils, preferably 0 to 5% silicone oils.

As volatile silicone oils, mention may be made of linear or cyclic volatile silicone oils, in particular those having a viscosity less than or equal to 8 centistokes (cSt) (8 x 10 ^-6 m ² /s), and having, in particular, 2 to 10 silicon atoms, and in particular, from 2 to 7 silicon atoms, these silicones optionally comprising alkyl or alkoxy groups having 1 to 10 carbon atoms. As volatile silicone oil which can be used in the invention, mention may be made, in particular, of dimethicones of viscosity 5 and 6 cSt, octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane, dodecamethyl cyclohexasiloxane, heptamethyl hexyltrisiloxane, heptamethyloctyl trisiloxane, hexamethyl disiloxane, octamethyl trisiloxane, decamethyl tetrasiloxane, dodecamethyl pentasiloxane, and mixtures thereof.

As non-volatile silicone oils, mention may be made of non-volatile, linear or cyclic polydimethylsiloxanes (PDMS); polydimethylsiloxanes comprising alkyl, alkoxy and/or phenyl groups, during or at the end of a silicone chain, groups having from 2 to 24 carbon atoms; phenyl silicones such as phenyl trimethicones, phenyl dimethicones, phenyl trimethylsiloxy diphenyl siloxanes, diphenyl dimethicones, diphenyl methyldiphenyl trisiloxanes, 2-phenyl ethyl trimethyl-siloxysilicates and pentaphenylated silicone oils.

The hydrocarbon oil can be chosen from:
* hydrocarbon oils having 8 to 14 carbon atoms, and in particular:
- C-branched alkanes₈-VS₁₄like C isoalkanes₈-VS₁₄of petroleum origin (also called isoparaffins) such as isododecane (also called 2,2,4,4,6-pentamethylheptane), isodecane, and for example oils sold under the trade names Isopars' or Permetyls ,
- linear alkanes, for example such as n-dodecane (C12) and n-tetradecane (C14) sold by Sasol respectively under the references PARAFOL 12-97 and PARAFOL 14-97,as well as their mixtures, the undecane-tridecane mixture, the mixtures of n-undecane (C11) and n-tridecane (C13) obtained in Examples 1 and 2 of application WO 2008/155059 from the Cognis Company, and their mixtures as well as the mixtures ofnot-undecane (C11) andnot-tridecane (C13) Cetiol Ultimate® from BASF.
* short-chain esters (having 3 to 8 carbon atoms in total) such as ethyl acetate, methyl acetate, propyl acetate, n-butyl acetate
* hydrocarbon oils of plant origin such as triglycerides consisting of esters of fatty acids and glycerol whose fatty acids can have varied chain lengths from C₄to C₂₄, the latter being able to be linear or branched, saturated or unsaturated; these oils are in particular triglycerides of heptanoic acid or octanoic acid, or even wheat germ, sunflower, grape seed, sesame, corn, apricot, castor, shea, avocado, olive, soy, sweet almond, palm, rapeseed, cotton, hazelnut, macadamia, jojoba, alfalfa, poppy, pumpkin, sesame, squash, rapeseed, blackcurrant, evening primrose, millet, barley, quinoa, rye, safflower, cancholy, passionflower, muscat rose, coconut; shea butter; or even the triglycerides of caprylic/capric acids such as those sold by the company Stéarineries Dubois or those sold under the names Miglyol 810^®, 812^®and 818^®by the company Dynamit Nobel,
* synthetic ethers having 10 to 40 carbon atoms;
* linear or branched hydrocarbons, of mineral or synthetic origin such as petroleum jelly, polydecenes, hydrogenated polyisobutene such as Parleam ®, squalane, paraffin oils, and their mixtures,
* esters like formula R oils¹C(O)-O-R² in which R¹represents the remainder of a linear or branched fatty acid containing 1 to 40 carbon atoms and R² represents a particularly branched hydrocarbon chain containing from 1 to 40 carbon atoms provided that R¹+R² is greater than or equal to 10, such as for example Purcellin oil (cetostearyl octanoate), isopropyl myristate, isopropyl palmitate, C alcohol benzoates₁₂to C₁₅, hexyl laurate, isodecyl neopentanoate, isostearyl neopentanoate, diisopropyl adipate, isononyl isononanoate, 2-ethyl-hexyl palmitate, isostearyl isostearate, isostearyl laurate 2-hexyl-decyl, 2-octyl-decyl palmitate, 2-octyl-dodecyl myristate, heptanoates, octanoates, decanoates or ricinoleates of alcohols or polyalcohols such as propylene glycol dioctanoate; hydroxylated esters such as isostearyl lactate, di-isostearyl malate, 2-octyl-dodecyl lactate; polyol esters and pentaerythritol esters, more preferably linear or branched C fatty acid esters₈-VS₁₀and C fatty alcohol₁₂-VS₁₈linear or branched alone or in mixture with alkanes resulting from the hydrogenation / complete reduction of fatty acids from Cocos Nucifera (Coconut) oil, particularly dodecane or mixtures of cococaprylate / caprate with dodecane, we can cite those with the INCI name coconut alkanes (and) Coco-caprylate / caprate marketed under the name VEGELIGHT 1212LC® by Grant Industries.
* fatty alcohols that are liquid at room temperature with a branched and/or unsaturated carbon chain having 12 to 26 carbon atoms such as octyl dodecanol, isostearyl alcohol, oleic alcohol, 2-hexyldecanol, 2-butyloctanol, and 2-undecylpentadecanol.
* the carbonate oils can be chosen from carbonates of formula R8-O-CO-O-R9, with R8 and R9, identical or different, represent a C4 to C12 alkyl chain, and preferably from C6 to C10, linear or branched ; the carbonate oils can be dicaprylyl carbonate (or dioctyl carbonate), sold under the name Cetiol CC® by the company BASF, di(ethyl–2-hexyl) carbonate, sold under the name TEGOSOFT DEC® by the company Evonik, dipropylheptyl carbonate (Cetiol 4 AII from BASF), dibutyl carbonate; di-neopentyl carbonate; dipentyl carbonate; di neoheptyl carbonate; di-heptyl carbonate; di-isononyl carbonate; or di-nonyl carbonate; and preferably dioctyl carbonate;
*oils called ether oil, volatile or non-volatile

An ether hydrocarbon oil is an oil of formula R1OR2 in which R1 and R2 independently designate a linear, branched or cyclic C4-C24 alkyl group, preferably a C6-C18 alkyl group, and preferably a C8-alkyl group. C12. It may be preferable for R1 and R2 to be the same. As a linear alkyl group, mention may be made of a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an undodyl group, a dodecyl group, a tridecyl group, a tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, behenyl, docosyl, tricosyl and tetracosyl. As a branched alkyl group, mention may be made of a 1-methylpropyl group, a 2-methylpropyl group, a t-butyl group, a 1,1-dimethylpropyl group, a 3-methylhexyl group, a 5-methylhexyl group, an ethylhexyl group, a 2-ethylhexyl group, a 5-methyloctyl group, a 1-ethylhexyl group, a 1-butylpentyl group, a 2-butyloctyl group, an isotridecyl group, a 2-pentylnonyl group, a 2-hexyldecyl group, an isostearyl group, a 2-heptylundecyl group, a 2-octyldodecyl group, a 1,3-dimethylbutyl group, a 1-(1-methylethyl)-2-methylpropyl group, a 1,1,3,3-tetramethylbutyl group, a 3 group, 5,5-trimethylhexyl, a 1-(2-methylpropyl)-3-methylbutyl group, a 3,7-dimethyloctyyl group, and a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl group . As a cyclic alkyl group, mention may be made of a cyclohexyl group, a 3-methylcyclohexyl group and a 3,3,5-trimethylcyclohexyl group. Advantageously, the ether oil is chosen from dicaprylyl ether, dicapryl ether, dilauryl ether, diisostearyl ether, dioctyl ether, nonylphenyl ether, dodecyl dimethylbutyl ether, cetyl dimethylbutyl ether, cetyl isobutyl ether and their mixtures. Preferably, it is chosen from dicaprylyl ether, dicapryl ether, dilauryl ether, diisostearyl ether, dioctyl ether and mixtures thereof. Dicaprylyl ether is particularly suitable. The composition of the invention, in addition to the hydrocarbon liquid fatty substance, may include a silicone oil. If silicone oil is found in the composition of the invention, preferably it is found in an amount which does not exceed 10% by weight relative to the weight of the composition, more particularly in an amount less than 5% and more preferably less than 2% by weight relative to the total weight of the composition.

In particular, the composition comprises at least one liquid hydrocarbon fatty substance c) chosen from:
- vegetable oils formed by esters of fatty acids and polyols, in particular triglycerides, such as sunflower, sesame or rapeseed oil, macadamia oil, soybean oil, sweet almond oil, calophyllum, palm, grape seeds, corn, arara, cotton, apricot, avocado, jojoba, olive, coconut or cereal sprouts;
- linear, branched or cyclic esters, having more than 6 carbon atoms, in particular 6 to 30 carbon atoms; and in particular isononyl isononanoate;
and more particularly the esters of formula R ^d -C(O)-OR ^e in which R ^d represents the remainder of a higher fatty acid comprising from 7 to 19 carbon atoms and R ^e represents a hydrocarbon chain comprising from 3 to 20 carbon atoms, such as palmitates, adipates, myristates and benzoates, including diisopropyl adipate and isopropyl myristate; more preferably the esters of formula R ^d -C(O)-OR ^e in which R ^d represents the remainder of a higher fatty acid comprising from 8 to 10 carbon atoms and R ^e represents a hydrocarbon chain comprising from 12 to 18 atoms of carbon ;
- hydrocarbons and in particular linear, branched and/or cyclic alkanes, volatile or non-volatile, such as C ₅ -C ₆₀ isoparaffins, possibly volatile such as undecane, dodecane, isododecane, tridecane Parléam ( hydrogenated polyisobutene), isohexadecane, cyclohexane, or 'ISOPARs', and their mixture; or alkanes resulting from the hydrogenation / complete reduction of mixtures of fatty acids from Cocos Nucifera (Coconut) oil such as dodecane, the mixture of C ₉ -C ₁₂ alkanes, whose chains comprise from 9 to 12 carbon atoms, preferably linear or branched alkanes, C ₉ -C ₁₂ in particular including dodecane or paraffin oils, petroleum jelly, or hydrogenated polyisobutylene;
- ethers having 6 to 30 carbon atoms;
- carbonates having 7 to 30 carbon atoms
- ketones having 6 to 30 carbon atoms;
- aliphatic fatty monoalcohols having 6 to 30 carbon atoms, the hydrocarbon chain not comprising a substitution group, such as oleic alcohol, decanol, dodecanol, octadecanol, octyldodecanol and linoleic alcohol;
- polyols having 6 to 30 carbon atoms, such as hexylene glycol; And
- their mixtures, such as mixtures of linear or branched C ₈ -C ₁₀ fatty acid esters and C ₁₂ -C ₁₈ fatty alcohol and alkanes resulting from the hydrogenation / complete reduction of mixtures of fatty acids from Cocos Nucifera (Coconut) oil, in particular dodecane, such as mixtures of cococaprylate/caprate and dodecane, we can cite those with the name INCI coconut alkanes (and) Coco-caprylate/caprate marketed under the name of VEGELIGHT 1212LC® by Grant Industries; or mixtures of C ₉ -C ₁₂ alkanes, the chains of which comprise from 9 to 12 carbon atoms, preferably linear or branched alkanes, in C ₉ -C ₁₂ in particular including dodecane, we can cite the mixture oil named INCI C9-12 ALKANE, VEGELIGHT SILK® marketed by BioSynthIs.

Preferably, the composition of the invention comprises at least one liquid hydrocarbon fatty substance c) chosen from:
- vegetable oils formed by esters of fatty acids and polyols, in particular triglycerides,
- esters of formula R ^d -C(O)-OR ^e in which R ^d represents the remainder of a higher fatty acid comprising 7 to 19 carbon atoms and R ^e represents a hydrocarbon chain comprising 3 to 20 carbon atoms , more preferably the esters of formula R ^d -C(O)-OR ^e in which R ^d represents the remainder of a higher fatty acid comprising from 8 to 10 carbon atoms and R ^e represents a hydrocarbon chain comprising from 12 to 18 carbon atoms;
- linear or branched C ₈ -C ₆₀ alkanes, volatile or non-volatile such as isododecane and alkanes resulting from the hydrogenation / complete reduction of mixtures of fatty acids from Cocos Nucifera oil (Coconut ) in particular dodecane;
- cyclic, non-aromatic, C ₅ -C ₁₂ alkanes; volatile or non-volatile;
- ethers having 7 to 30 carbon atoms;
- ketones having 8 to 30 carbon atoms;
- aliphatic fatty monoalcohols having 12 to 30 carbon atoms, the hydrocarbon chain not comprising a substitution group, and
- their mixtures.

Advantageously, the fatty substance(s) c) of the invention, in particular liquid ones, are non-polar, i.e. formed only of carbon and hydrogen atoms.

The liquid hydrocarbon fatty substance(s) are preferably chosen from hydrocarbon oils having 8 to 14 carbon atoms, in particular volatile ones, more particularly non-polar oils, described above.

Preferably the fatty substance(s) c) of the invention, in particular liquids, are chosen from alkanes such as dodecane, decane, isododecane, fatty alcohols such as octyldodecanol, esters such as isononanoate isononyl, Coco-caprylate/caprate and their mixtures, more preferably alkanes.

More particularly the fatty substance(s) c) of the invention, in particular liquid, are chosen from C alkanes₆-VS₁₆, linear or branched, preferably in C₈-VS₁₄, more preferably in C₉-VS₁₃Again more preferably in C₉-VS_12,and even more preferably the alkanes are volatile. More particularly the liquid fatty substance(s) iii) of the invention are volatile and chosen from undecane, decane, dodecane, isododecane, tridecane, tetradecane and their mixture comprising in particular dodecane, isododecane or a mixture of undecane and tridecane.

Preferably, the fatty substance(s) c) of the invention, in particular liquids, are isododecane.

According to another advantageous embodiment of the invention, the fatty substance(s) c) of the invention, in particular liquid(s), is(are) a mixture of non-volatile oil(s) and oil(s). ) volatile(s) preferably the mixture comprises isododecane, undecane, dodecane, isododecane, tridecane, tetradecane more preferably isododecane as volatile oil. As a volatile and non-volatile oil mixture, mention may be made of the mixture of isododecane and isononyl isononanoate or the mixture of isododecane and isononyl isononanoate.

More preferably when the fatty substance(s) are a mixture of volatile and non-volatile oil, the quantity of volatile oil is greater than the quantity of non-volatile oil

In particular in the mixture the non-volatile oil is a phenyl silicone oil preferably chosen from pentaphenylated silicone oils.

Advantageously, the composition C1 or C'1 comprises one or more fatty substances, in particular liquids at 25 ° C and at atmospheric pressure, preferably one or more oils, in a content ranging from 2 to 99.9% by weight, relative to to the total weight of the composition, preferably ranging from 5 to 90% by weight, preferably ranging from 10 to 80% by weight, preferably ranging from 20 to 80% by weight.

According to a preferred embodiment of the invention, the composition C1 or C'1 according to the invention comprises c) one or more fatty substances, in particular liquids at 25°C and at atmospheric pressure, and f) one or more different organic solvents dec).
d) organic solvent(s) different from c)

According to a particular embodiment of the invention, the composition C1 or C1' further comprises one or more organic solvents different from c), apolar or polar, preferably polar, protic or aprotic, more particularly protic and/or polar, of preferably protic and polar.

Preferably the organic solvent(s) are miscible with water.

By “ water-miscible solvent ” according to the present invention is meant a compound that is liquid at room temperature and miscible with water (miscibility in water greater than 50% by weight at 25°C and atmospheric pressure).

The organic solvent(s) which can be used in composition C1 or C1' of the invention may also be volatile.

Among the organic solvents which can be used in the composition C1 or C1' according to the invention, mention may in particular be made of protic polar or aprotic polar, preferably protic polar, organic solvents, particularly lower monoalcohols having from 2 to 10 carbon atoms such as ethanol and isopropanol, preferably ethanol.

According to one embodiment, the composition C1 or C1' of the invention comprises one or more organic solvents, preferably chosen from monoalcohols having 2 to 6 carbon atoms such as ethanol and isopropanol,

Preferably the quantity of organic solvent(s) is less than 70% by weight, more preferably less than 50% by weight, relative to the total weight of composition C1 or C1'. According to one embodiment of the invention, the composition C1 or C1' comprises a quantity of organic solvent(s) greater than 0.5%, more particularly greater than or equal to 1% by weight relative to the total weight of the composition. Particularly the composition comprises between 2% and 50% by weight of organic solvent(s).
e) Water

According to a particular embodiment of the invention, the composition C1 or C'1 also comprises water.

The water suitable for the invention may be tap water, distilled water, spring water, floral water, such as cornflower water and/or mineral water such as VITTEL water, LUCAS water or LA ROCHE POSAY water and/or thermal water.

According to one embodiment, the composition C1 or C'1 of the invention comprises e) water and at least one fatty substance c).

According to a particular embodiment of the invention, the composition C1 or C1' comprises a quantity of water less than or equal to 10% by weight relative to the total weight of the composition, particularly less than or equal to 2% by weight, preferably less than 1% by weight, more preferably less than 0.5% by weight relative to the total weight of the composition. More particularly, the composition of the invention is anhydrous, ie free of water.
f) Surfactants

According to a particular embodiment of the invention, the composition C1 or C'1 further comprises f) one or more surfactant(s) preferably non-ionic(s), ionic(s) or mixtures thereof.

According to another particular embodiment of the invention, the composition C1 or C'1 does not comprise any surfactant.

By “ surfactant ” we mean a compound which modifies the surface tension between two surfaces. The surfactant(s) d) are amphiphilic molecules, which have two parts of different polarity, one lipophilic (which retains fat) which is nonpolar, the other hydrophilic (miscible or soluble in water) is polar. The lipophilic part is generally a fatty chain, and the other water-miscible part is polar and/or protic.

By “ ionic ” we mean anionic, cationic, amphoteric, or zwitterionic.

By “ fatty chain ” is meant a hydrocarbon chain comprising more than 6 atoms, preferably between 6 to 30 carbon atoms, preferably from 8 to 24 carbon atoms, linear or branched, saturated or not.

According to a first particular embodiment, the composition of the invention contains f) at least one non-ionic, silicone or non-silicone surfactant.

Among the nonionic surfactants according to the invention, we can cite, alone or mixtures, fatty alcohols, alpha-diols, alkylphenols, these 3 types of compounds being polyethoxylated, polypropoxylated and/or polyglycerolated, and having a fatty chain comprising for example 8 with 22 carbon atoms, the number of ethylene oxide or propylene oxide groups which can range in particular from 2 to 50 and the number of glycerol groups which can range in particular from 2 to 30. Mention may also be made of ethylene oxide copolymers. ethylene and propylene, condensates of ethylene and propylene oxide on fatty alcohols; polyethoxylated fatty amides preferably having from 2 to 30 moles of ethylene oxide, polyglycerolated fatty amides comprising on average 1 to 5 glycerol groups and in particular 1.5 to 4; oxyethylenated sorbitan fatty acid esters having 2 to 30 moles of ethylene oxide; fatty acid esters of sucrose, fatty acid esters of polyethylene glycol, alkylpolyglycosides, N-alkylglucamine derivatives, amine oxides such as (C ₁₀ -C ₁₄ ) alkylamine oxides or oxides of N-acylaminopropylmorpholine.

The surfactant(s) represent(s) in total particularly from 0.01% to 30% by weight relative to the total weight of the composition, preferably from 0.5% to 15% by weight and even more preferably from 1 % to 10% by weight, better between 1% and 5% by weight of the composition.
Form of composition:

According to one embodiment of the invention the composition comprises an aqueous phase. The composition is in particular formulated in aqueous lotions or in water-in-oil, oil-in-water emulsions, or in multiple emulsions (triple oil-in-water-in-oil or water-in-oil-in-water emulsion ( such emulsions are known and described for example by C. FOX in “ Cosmetics and Toiletries ” - November 1986 - Vol 101 - pages 101-112).

According to a particular embodiment of the invention the composition is a direct emulsion i.e. oil in water or Oil in water O/W type. The quantity of oil by weight is preferably less than 70% in the inverse emulsion, preferably less than or equal to 40%, more particularly less than or equal to 35% by weight relative to the total weight of the composition.

More particularly in the direct emulsion the quantity of water is greater than or equal to 30% by weight relative to the total weight of the composition, more particularly greater than or equal to 40%, preferably greater than or equal to 35%.

According to another particular embodiment of the invention, the composition of the invention is an inverse emulsion i.e. water in oil or water in oil W/O type. The quantity of oil by weight is preferably greater than 30% in the inverse emulsion, preferably greater than 40%, more preferably greater than or equal to 45% by weight relative to the total weight of the composition. More particularly in the inverse emulsion the quantity of water is less than 40% by weight relative to the total weight of the composition, preferably less than or equal to 35% by weight.

The composition according to the invention C1 or C1' preferably has a pH ranging from 3 to 9 depending on the support chosen.

According to a particular embodiment of the invention, the pH of the composition(s) is neutral or even slightly acidic. Preferably the pH of the composition is between 6 and 7. The pH of these compositions can be adjusted to the desired value using acidifying or alkalizing agents usually used in cosmetics or even using conventional buffer systems.

By “ alkalizing agent ” or “ base ” is meant an agent making it possible to increase the pH of the composition in which it is found. The alkalizing agent is a Bronsted, Lowry or Lewis base. It can be mineral or organic. Particularly said agent is chosen from a) ammonia, b) (bi)carbonate, c) alkanolamines such as mono-, di- and triethanolamines as well as their derivatives d) oxyethylenated and/or oxypropylenated ethylenediamines, e) organic amines, f) mineral or organic hydroxides, g) alkali metal silicates such as sodium metasilicates, h) amino acids with basic preferences such as arginine, lysine, ornithine, citruline and hystidine, and i) the compounds of formula (F) following:

• West un radical divalent alkylène en C₁-C₆éventuellement substitué par un ou plusieurs groupements hydroxyle ou un radical alkyle en C₁-C₆, et/ou éventuellement interrompu par un ou plusieurs hétéroatomes tel que O, ou NR_u;
• R _x ,R _y ,R _z ,R _t , etR _u , identiques ou différents, représentent un atome d'hydrogène, un radical alkyle en C₁-C₆ou hydroxyalkyle en C₁-C₆, aminoalkyle en C₁-C₆.

[Chem. 23]:
Formula (F) in which:

• W is a divalent C ₁ -C ₆ alkylene radical optionally substituted by one or more hydroxyl groups or a C ₁ -C ₆ alkyl radical, and/or optionally interrupted by one or more heteroatoms such as O, or NR _u ;
• R _x , R _y , R _z , R _t , and R _u , identical or different, represent a hydrogen atom, a C ₁ -C ₆ alkyl or C ₁ -C ₆ hydroxyalkyl radical, C ₁ -aminoalkyl _C6 .

Mention may be made, as an example of amines of formula (F) , of 1,3-diaminopropane, 1,3-diamino 2-propanol, spermine and spermidine.

By “ alkanolamine ” is meant an organic amine comprising a primary, secondary or tertiary amine function, and one or more linear or branched C ₁ -C ₈ alkyl groups carrying one or more hydroxyl radicals.

Among the mineral or organic hydroxides, mention may be made of those chosen from a) the hydroxides of an alkali metal, b) the hydroxides of an alkaline earth metal, such as sodium or potassium hydroxides, c) the hydroxides of a transition metal, d) lanthanide or actinide hydroxides, quaternary ammonium hydroxides and guanidinium hydroxide. Mineral or organic hydroxides a) and b) being preferred.

Among the acidifying agents of the compositions used in the invention, mention may be made, by way of example, of mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as hydrochloric acid. acetic acid, tartaric acid, citric acid, lactic acid, sulfonic acids.

The alkalizing agents and the acidifying agents as defined above preferably represent from 0.001% to 20% by weight of the weight of the composition containing them. More particularly from 0.005% to 8% by weight of the composition.

According to a particular embodiment of the invention, the composition C1 or C'1 comprises a quantity of water less than or equal to 10% by weight relative to the total weight of the composition. Even more preferably, composition C1 comprises a quantity of water less than or equal to 5%, better still less than 2%, even better less than 0.5% and in particular free of water. Where appropriate, such small quantities of water may in particular be provided by ingredients of the composition which may contain residual quantities.

According to a particular embodiment of the invention, the composition does not include water.

Advantageously, the composition C1 or C'1 of the invention comprises a physiologically acceptable medium. In particular the composition is a cosmetic composition.

By physiologically acceptable medium, we mean an environment compatible with the keratin materials of human beings, such as for example skin, lips, nails, eyelashes, eyebrows, hair.

By cosmetic composition is meant a composition compatible with keratin materials, which has a pleasant color, odor and feel, and which does not generate unacceptable discomfort (tingling, tightness, etc.), likely to deter the consumer.

By keratin materials, we mean the skin (body, face, eye area, scalp), hair, eyelashes, eyebrows, body hair, nails, lips.

The composition C1 or C1' according to the invention may comprise one or more cosmetic additives chosen from perfumes, preservatives, fillers, coloring agents, UV filters, oils other than fatty substances c), moisturizers, vitamins , ceramides, antioxidants, anti-free radical agents, polymers different from a), thickeners or film-forming agents different from b), trace elements, softeners, sequestrants, anti-hair loss agents, anti-dandruff agents, propellants. Particularly the composition according to the invention C1 or C1' further comprises one or more coloring agents chosen from pigments, direct dyes and mixtures thereof, preferably pigments; more preferably the pigment(s) of the invention are chosen from carbon black, iron oxides in particular black and micas coated with iron oxide, triarylmethane pigments in particular blue and violet such as BLUE 1 LAKE, pigments azo, particularly red ones such as D&C RED 7 alkali metal salt of lithol red such as the calcium salt of lithol red B, even more preferably red iron oxides.

Advantageously, the composition according to the invention C1 or C1' is a makeup composition, in particular a composition for lip makeup, mascara, eyeliner, eye shadow, foundation.
Additional Solvents

According to a particular embodiment of the invention, the composition C1 or C'1 comprises one or more preferably polar and/or protic solvents different from water in the predominantly fatty medium.
The additives

The composition C1 or C'1 according to the invention may further comprise one or more fillers, in particular in a content ranging from 0.01% to 30% by weight, relative to the total weight of the composition, preferably ranging from 0.01% to 20% by weight. By fillers, we must understand particles of any shape, colorless or white, mineral or synthetic, insoluble in the medium of the composition whatever the temperature at which the composition is manufactured. These fillers are used in particular to modify the rheology or texture of the composition.

The composition according to the invention C1 or C1' can be in the form of anhydrous composition, water-in-oil emulsion or oil-in-water emulsion.

The invention is illustrated in more detail in the following examples. Quantities are indicated in weight percentage.

Examples

The PHAs presented in the different examples were prepared in 3-liter chemostats and/or 5-liter Fernbachs flasks depending on the use of an inhibitor of the β-oxidation pathway or not. The isolation of PHAs is similar for all the examples obtained.

During a first step, the microorganism generates PHAs which are stored in intracellular granules whose proportion varies depending on the conditions applied such as the temperature or the nature of the culture medium. The generation of PHAs granules can be associated with the growth of the microorganism or not depending on the nature of the microorganisms. During the second step, the biomass containing the PHAs is isolated, i.e. separated from the fermentation medium, then dried. PHAs are extracted from the biomass before being purified if necessary.

A mixture of saturated and unsaturated carbon sources is, for certain examples, necessary for the stability of the PHA obtained.

Example 1:R side chain PHA ¹ representing a 10% linear n-octylenyl unsaturated group and R ² representing an n-pentyl group

[Chem. 24]:

The process for synthesizing the compound of Example 1 is adapted from the article: Fed-batch production of unsaturated medium-chain-length polyhydroxyalkanoates with controlled composition by Pseudomonas putida KT2440 , Z. Sun, JA Ramsay, M. Guay, BA Ramsay, Applied Microbiological Biotechnology, 82. 657–662. 2009.

The microorganism used is Pseudomonas putida KT2440 ATCC® 47054™. The culture mode is carried out in axenic conditions in discontinuous growth supplied with a maintenance solution containing a mixture of carbon sources at a rate of µ=0.15h ^-1 in a 3L chemostat containing 2.5L of culture medium.

The system is ventilated with an air flow of 0.5 vvm for a dissolved oxygen (DO) setpoint at 30% of saturation. The pH is regulated with a 15% ammonia solution. The temperature of the fermentation medium is regulated at 30°C.

• Le milieu de fermentation est régulé en température-pression d’oxygène dissous et pH (non représenté) Voir en annexe.
• Le procédé d’obtention est réalisé à l’aide de trois milieux de culture distincts. Le premier milieu de culture défini MC1 « inoculum » est utilisé pour la préparation de la préculture. Le second milieu de culture défini MC2 « bach » est utilisé pour la croissance en discontinue non alimentée du microorganisme avec les sources carbonées primaires dans les fioles de Fernbachs. Le troisième milieu de culture défini MC3 « maintenance » est utilisé pour l’alimentation discontinue, ou maintenance, de la fermentation avec les sources carbonées d’intérêt à un débit calibré en fonction de la croissance du microorganisme.

Setting up the fed batch growth fermentation mode:

• The fermentation medium is regulated in temperature, dissolved oxygen pressure and pH (not shown) See in the appendix.
• The production process is carried out using three distinct culture media. The first culture medium defined MC1 “inoculum” is used for the preparation of the preculture. The second defined culture medium MC2 “bach” is used for the unfed batch growth of the microorganism with the primary carbon sources in the Fernbachs flasks. The third culture medium defined MC3 “maintenance” is used for batch feeding, or maintenance, of the fermentation with the carbon sources of interest at a flow rate calibrated according to the growth of the microorganism.

The composition of Nutrient Broth in mass percentage is 37.5% beef extract and 62.5% peptone. Reference 233000 DIFCO™.

100 mL of preculture are prepared by suspending a cryotube containing 1 mL of the strain with 100 mL “inoculum” culture media at pH adjusted to 6.8 with 2N NaOH in a 250 mL Fernbach flask then incubate at 30°C at 150 rpm for 24 hours. 1.9L of MC2 “BATCH” culture medium placed in a 3L chemostat previously sterilized are inoculated at OD=0.1 with the 100 mL of preculture. After 4 hours at 30°C at 850 rpm.

At the end of the introduction, the biomass is isolated by centrifugation then washed three times with water. The biomass is dried by freeze-drying before being extracted with ethyl acetate for 24 hours. The suspension is clarified by filtration on a GF/A filter (Wattman®). The filtrate, composed of PHA in solution in ethyl acetate, is concentrated by evaporation then dried under high vacuum at 40°C to constant mass.

PHA can optionally be purified by solubilization and successive precipitation in an ethyl acetate/Ethanol 70% methanol system for example.

PHA was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure.

Preparation of example 1’:PHA copolymer with R side chain ¹ representing a 5% unsaturated n-octalenyl group and R ² representing a groupnot-hexyl
[Chem. 25]:
The copolymer of Example 1’ (5% unsaturation and R chain²representing n-hexyl) was prepared according to the procedure described for Example 1, with the same composition of the microelement solution as that described in Example 1 and with the following culture medium compositions: Ingredients
in grams per liter MC1
“ inoculum ” MC2
“ batch ” MC3 “ maintenance ” (NH ₄ ) ₂ SO ₄ 4.7 4.7 Na ₂ HPO ₄ ; 7H ₂ W 12 9 KH ₂ PO ₄ 2.7 2.03 MgSO ₄ ; 7H ₂ W 0.8 1.03 Nutrient Broth 3 / Nonanoic acid / 0.95 950 Undecylene acid 0.05 50 Microelements Solution / 10 NaOH 2N QSP pH=6.8 milliQ water QSP 1000 g The PHA copolymer of Example 1' has been fully characterized by spectroscopic and spectrometric methods and conforms to the expected chemical structure, with an unsaturation rate of 5%.
Example 1'': CopolymerR side chain PHA ¹ representing an unsaturated n-octalenyl group 10% linear and R ² representing an n-hexyl group
The copolymer of example 1’’ (with 10% unsaturation and R chain²representing n-hexyl) was prepared according to the procedure described for Example 1, with the same composition of the microelement solution as that described in Example 1 and with the following culture medium compositions: Ingredients
In grams per liter MC1
“ inoculum ” MC2
“ batch ” MC3 “ maintenance ” (NH ₄ ) ₂ SO ₄ 4.7 4.7 / Na ₂ HPO ₄ ; 7H ₂ W 12 9 / KH ₂ PO ₄ 2.7 2.03 / MgSO ₄ ; 7H ₂ W 0.8 1.03 / Nutrient Broth 3 / / Nonanoic acid / 0.90 900 Undecylene acid / 0.1 100 Microelements Solution / 10 / NaOH 2N QSP pH=6.8 milliQ water QSP 1000 g PHA was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure.
Example 1''':PHA copolymer with R side chain ¹ representing a 30% linear unsaturated n-octalenyl group and R ² representing an n-pentyl group
The copolymer of example 1’’’ (with 30% unsaturation and R chain²representing n-pentyl) was prepared according to the procedure described for Example 1, with the same composition of the microelement solution as that described in Example 1 and with the following culture medium compositions: Ingredients
In grams per liter MC1
“ inoculum ” MC2
“ batch ” MC3 “ maintenance ” (NH ₄ ) ₂ SO ₄ 4.7 4.7 / Na ₂ HPO ₄ ; 7H ₂ W 12 9 / KH ₂ PO ₄ 2.7 2.03 / MgSO ₄ ; 7H ₂ W 0.8 1.03 / Nutrient Broth 3 / / Octanoic acid / 0.70 700 Undecylene acid / 0.3 300 Microelements Solution / 10 / NaOH 2N QSP pH=6.8 milliQ water QSP 1000 g The PHA copolymer was fully characterized by spectroscopic and spectrometric methods and conforms to the expected chemical structure.
Example 2: Poly(3-HydroxyOctanoate-co-Undecenoate) 10% unsaturations grafted at 100% with thiolactic acid (Compound of Example 1 grafted with TLA thiolactic acid):

[Chem. 25]:

1 g of compound of Example 1 and 150 mg of thiolactic acid were dissolved in 20 mL of ethyl acetate at room temperature with stirring. 20 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365 nm (reference) and with stirring for at least 10 minutes.

20 mL of the reaction medium was then precipitated in a 200 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The grafted PHA of Example 2 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure.
Example 3 : Poly(3-HydroxyOctanoate-co-Undecenoate) 10% unsaturations grafted at 100% with octanethiol (Compound from Example 1 grafted with n-octanthiol)

[Chem. 26]:

0.5 g of compound of Example 1 and 125 mg of octanethiol were dissolved in 10 mL of ethyl acetate at room temperature with stirring. 15 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365 nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 100 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The grafted PHA of Example 3 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure.
Example 4 : Poly(3-HydroxyOctanoate-co-Undecenoate) 10% unsaturations grafted at 75% with 8-mercapto-1-octanol (Compound from Example 1 grafted with 8-mercapto-1-octanol)

[Chem. 27]:

50 mg of compound of Example 1 and 10 mg of 8-mercapto-1-octanol were dissolved in 5 mL of ethyl acetate at room temperature with stirring. 2 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365 nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 50 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The grafted PHA of Example 4 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure. Grafting at 75% or 7.5% function in total.
Example 5 : Poly(3-HydroxyOctanoate-co-Undecenoate) 10% unsaturations grafted at 32% with cysteamine (Compound from Example 1 grafted with cysteamine)

[Chem. 28]:

0.5 g of compound of Example 1 and 54 mg of cysteamine were solubilized in a mixture of 10 mL of dichloromethane and 2 mL of ethanol at room temperature with stirring. 10 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365 nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 100 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

1. [Chem. 29] :

The grafted PHA of Example 5 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure. Grafting at 32% or 3.2% function in total.
Example 6 : Poly(3-HydroxyOctanoate-co-Undecenoate) 10% unsaturations grafted at 73% with cyclohexanethiol (CHT) (Compound from Example 1 grafted CHT)

1. [Chem. 29]:

100 mg of compound of Example 1 and 26 mg of cyclohexanethiol were dissolved in 5 mL of dichloromethane at room temperature with stirring. 5 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365 nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 50 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The grafted PHA of Example 6 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure. Grafting at 73% or 7.3% function in total.
Example 7: Poly(3-HydroxyOctanoate-co-Undecenoate) 10% unsaturations grafted at 66% with 2-furanmethanethiol (FT) (Compound from Example 1 grafted FT)

[Chem. 30] :

100 mg of compound of Example 1 and 26 mg of 2-furanmethanethiol were dissolved in 5 mL of dichloromethane at room temperature with stirring. 5 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365 nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 50 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

1. [Chem. 31] :

The grafted PHA of Example 7 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure. Grafting at 66% or 6.6% function in total.
Example 8: Poly(3-HydroxyOctanoate-co-Undecenoate) 10% unsaturations grafted at 70% with 1-Thio-β-D-glucose tetraacetate (Compound from Example 1 grafted TGT)

1. [Chem. 31]:

100 mg of compound of Example 1 and 26 mg of 1-Thio-β-D-glucose tetraacetate were dissolved in 5 mL of dichloromethane at room temperature with stirring. 5 mg of 2,2-dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365 nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 50 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The grafted PHA of Example 8 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure. Grafting at 70% or 7% function in total.
Example 9: Poly(3-HydroxyOctanoate-co-Undecenoate) 10% unsaturations grafted at 50% with 2-phenylethanthiol (PT) (Compound of Example 1 grafted PT)

[Chem. 32]:

100 mg of compound of Example 1 and 26 mg of 2-phenylethanthiol were dissolved in 5 mL of dichloromethane at room temperature with stirring. 5 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365 nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 50 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The grafted PHA of Example 9 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure. Grafting at 50% or 5% function in total.
Example 10: Poly(3-HydroxyOctanoate-co-Undecenoate) 10% unsaturations grafted at 64% with 4-tert-Butylbenzyl mercaptan (TBM) (Compound from Example 1 grafted TBM)

[Chem. 33]:

100 mg of compound of Example 1 and 26 mg of 4-tert-Butylbenzyl mercaptan were dissolved in 5 mL of dichloromethane at room temperature with stirring. 5 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 50 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The grafted PHA of Example 10 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure. Grafting at 64% or 6.4% function in total.
Example 11: Poly(3-HydroxyNonanoate-co-Undecenoate) with 10% unsaturations grafted at 100% with thiolactic acid

[Chem. 34]:

0.1 g of compound of Example 1'' and 15 mg of thiolactic acid were dissolved in 5 mL of chloroform at room temperature with stirring. 5 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 50 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The grafted PHA of Example 11 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure. 100% grafting.
Example 12: Poly(3-HydroxyNonanoate-co-Undecenoate) 5% unsaturations grafted at 100% with octanethiol

[Chem. 35]:

1 g of PHA copolymer from Example 1' and 150 mg of octanethiol were dissolved in 15 mL of ethyl acetate at room temperature with stirring. 20 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 500 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The grafted PHA of Example 12 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure. 100% grafting.
Example 13: Poly(3-HydroxyNonanoate-co-Undecenoate) 5% unsaturations epoxidized at 100%

[Chem. 37]:

20 g of PHA copolymer from Example 1' are dissolved in 80 mL of anhydrous dichloromethane. A suspension of 1.9 g of m-CPBA 77% is prepared with 20 mL of anhydrous dichloromethane and added to the mixture with stirring, at room temperature for at least 120 hours.

The reaction medium was then precipitated in a 500 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The PHA of Example 13 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure. 100% epoxidation.
Example 14: Poly(3-HydroxyNonanoate-co-Undecenoate) 10% unsaturations epoxidized at 100%

10 g of PHA copolymer from Example 1'' are dissolved in 40 mL of anhydrous dichloromethane. A suspension of 1.9 g of m-CPBA 77% is prepared with 10 mL of anhydrous dichloromethane and added to the mixture with stirring, at room temperature for at least 120 hours.

The reaction medium was then precipitated in a 500 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The PHA of Example 14 was fully characterized by spectroscopic and spectrometric methods and conforms to the expected chemical structure. 100% epoxidation.
Example 15: Poly(3-HydroxyOctanoate-co-Undecenoate) 30% unsaturations epoxidized at 100%

10 g of PHA copolymer from Example 1” are dissolved in 40 mL of anhydrous dichloromethane. A suspension of 6.2 g of m-CPBA 77% is prepared with 10 mL of anhydrous dichloromethane and added to the mixture with stirring, at room temperature for at least 120 hours.

The reaction medium was then precipitated in a 250 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The PHA of Example 15 was fully characterized by spectroscopic and spectrometric methods and conforms to the expected chemical structure. 100% epoxidation.
Example 16: Poly(3-HydroxyNonanoate-co-Undecenoate) 5% unsaturations grafted at 100% with 4-tert-Butylbenzyl mercaptan (TBM) (Compound of Example 1' grafted TBM)

[Chem. 38]:

2 g of PHA copolymer from Example 1' and 300 mg of 4-tert-butylbenzylmercaptan were dissolved in 25 mL of ethyl acetate at room temperature with stirring. 25 mg of 2,2-Dimethoxy-2-Phenylacetophenone (IRGACURE 651) was added to the mixture. The medium was then irradiated under a 100W UV lamp at 365nm (reference) and with stirring for at least 10 minutes.

The reaction medium was then precipitated in a 500 mL mixture of ethanol/water 70/30 vv. A viscous white precipitate was obtained. This step can be repeated. The product thus obtained is dissolved in a minimum of ethyl acetate, poured onto a Teflon plate, then dried under dynamic vacuum at 40°C, to obtain a homogeneous film.

The PHA of Example 16 was fully characterized by spectroscopic and spectrometric methods and conforms to the expected chemical structure. 100% grafting.
Example 17 : PHA copolymer with side chain R ¹ representing an isohexylenyl group and R ² representing an isobutyl group

[Chem. 39]:

The process for obtaining Example 17 is an adaptation of Applied and Environmental Microbiology , Vol 60, No. 9. 3245-3254 (1994) “Polyester Biosynthesis Characteristics of Pseudomonas citronellolis Grown on Various Carbon Sources, Including 3-Methyl- Branched Substrate”. MUN HWAN CHOI and SUNG CHUL YOON. The microorganism used is Pseudomonas citronellolis ATCC® 13674™. The culture mode is carried out under axenic conditions in non-fed discontinuous culture in 5L Fernbachs flasks (Corning® ref. 431685) containing 2 of culture medium, shaken at 110rpm at 30°C in an orbital incubator (diameter of the 'orbit of 2.5cm).

The production process is carried out using two distinct culture media. The first culture medium defined MC1 “inoculum” is used for the preparation of the preculture. The second culture medium defined MC2 “bach” is used for the growth in unfed batch culture of the microorganism with the carbon source of interest in the Fernbachs flasks.

The composition of Nutrient Broth in mass percentage is 37.5% beef extract and 62.5% peptone. Reference 233000 DIFCO™ BD.

The composition of the yeast extract in mass percentage is 100% autolyzate of the yeast Saccharomyces cerevisiae. Reference 210933 DIFCO™ BD.

100 mL of preculture are prepared by suspending a cryotube containing 1 mL of the strain with 100 mL “inoculum” culture media at pH adjusted to 6.8 with 2N NaOH in a 250 mL Fernbach then incubate at 30 °C at 150 rpm for 24 hours. 1.9L of MC2 “BATCH” culture medium placed in a previously sterilized 5L Fernbach are inoculated at OD=0.1 with 100mL of inoculum.

After 70 hours at 30°C at 110rpm, the biomass dried by freeze-drying before being extracted with dichloromethane for 24 hours. The suspension is clarified by filtration on a GF/A filter (Wattman®). The filtrate, composed of PHA in solution in dichloromethane, is concentrated by evaporation then dried under high vacuum at 40°C to constant mass.

The PHA can optionally be purified by solubilization and successive precipitation such as a dichloromethane methanol system for example.

1. [Chem. 40] :

The PHA copolymer of Example 17 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure with: 68 mole % of unit (A) of which R ¹ = isohexylenyl and 32 mole % of unit ( B) of which R ² = isobutyl.
Example 18 : PHA copolymer with side chain R ¹ representing an isohexyl group and R ² representing an isobutyl group

1. [Chem. 40]:

Example 18 is obtained by hydrogenation of the PHA copolymer from Example 17 via an H-Cube Midi® continuous hydrogenator from ThalesNanotechnology.

A solution of 2 g (8.83 millimoles) of PHA from Example 3 is prepared with a mixture composed of 100 ml of ethyl acetate (SIGMA ALDRICH – CAS: 141-78-6) and 100 ml of methanol ( SIGMA ALDRICH – CAS: 67-56-1) is introduced at a flow rate of 3 ml per minute into a hydrogenation cartridge containing the 5% palladium on carbon catalyst (MidiCard ref DHS 2141; Thalesnano technology) maintained at 100° C under a pressure of 80 bars in the presence of hydrogen within the ThalesNanotechnology H-Cube Midi® system. The reduction of the double bond is followed by NMR. After 6 consecutive reduction cycles, the solution is concentrated by evaporation then dried under vacuum to constant mass.

The PHA can optionally be purified by solubilization and successive precipitation such as a dichloromethane methanol system for example.

The PHA copolymer of Example 4 was fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure with: 68 mole % of unit (A) of which R ¹ = isohexyl and 32 mole % of unit ( B) of which R ² = isobutyl

Example 19:

A polymer was prepared using the microorganism Pseudomonas putida KT2440 ATCC® 47054™, octanoic acid.

The culture method was carried out under axenic batch conditions in 5 L Fernbachs flasks (Corning ® ref. 431685) containing 2 L of culture medium, shaken at 110 rpm at 30°C in an orbital incubator ( orbit diameter of 2.5 cm).
The synthesis process was carried out using two distinct culture media. The first defined culture medium MC1 “inoculum” was used for the preparation of the inoculum. The second culture medium defined MC2 “batch” was used for the non-fed batch growth of the microorganism with octanoic acid in Fernbach flasks.

The composition in grams per liter of the two media is described in Table 8 below:

(2) The composition of the microelement solution in grams per liter is described in Table 9 below:

100 ml of inoculum were prepared by suspending a cryotube containing 1 ml of the strain with 100 ml “inoculum” culture media at pH adjusted to 6.8 with 2N NaOH in a 250 ml Fernbach flask then incubated at 30°C at 150 rpm for 24 hours. 1.9 l of MC2 “BATCH” culture medium placed in a previously sterilized 5 l Fernbach flask were inoculated at OD = 0.1 with 100 ml of inoculum. After 70 hours at 30°C at 110 rpm, the biomass was dried by freeze-drying before being extracted with dichloromethane for 24 hours. The suspension was clarified by filtration on a GF/A filter (Wattman®); the filtrate, containing the copolymer in solution in dichloromethane, was concentrated by evaporation then dried under high vacuum at 40°C to constant mass. The crude polyhydroxyalkanoate was purified by precipitation of a solution of the latter in solution in 10 times its weight of dichloromethane, in 10 volumes of cold methanol solution. The solid obtained was dried under high vacuum at 40 °C to constant mass.

The molecular weight of the polyhydroxyalkanoate obtained was characterized by size exclusion chromatography, refractive index detection
■ Eluent: THF
■ Analytical flow rate: 1 mL/min
■ Injection: 100 μL
■ Columns: 1 Agilent PLGel Mixed-D 5μm column; 300 x 7.5mm; 1 Agilent PLGel Mixed-C 5μm column; 300 x 7.5mm; 1 Agilent Oligopore column; 300 x 7.5mm
■ at room temperature (25°C)
■ Detection: Waters 2487 Dual Absorbance Detector, Waters 2414 Refractive
■ Index Detector
■ Integrator: refractive index at 45°C and 64mV
■ Empower (GPC Module Relative/conventional molar mass)
■ Empower injection duration 40 min
■ Standards: High mass polystyrene / EasiVial PS-H 4 mL from Agilent Technology Part No. PL2010-0200

The analysis makes it possible to measure the weight average molecular weight (Mw in g/mole), the number average molecular weight (Mn in g/mole), the polydispersity index Ip (Mw/Mn) and the degree of polymerization DPn.

The monomeric composition of the polyhydroxyalkanoate obtained was defined by gas chromatography equipped with a flame ionization detector.
Identification is carried out via the injection of commercial standards and the monomeric composition was determined by methanolysis and sylylation treatment.
To determine the monomeric composition, 7 mg of the polyhydroxyalkanoate polymer was dissolved in 1.5 mL of chloroform and was methanolyzed in the presence of 1.5 mL of a solution of MeOH/HCl (17/2, v/v) at 100°C for 4 hours. The organic phase was then washed with 1 mL of water then dried over MgSO4. Sylilation of the methyl esters formed was carried out by adding 100 μL of BSTFA (N,Obis(trimethylsilyl)trifluoroacetamide) and 100 μL of pyridine to the methylated sample. The solution was heated to 70°C for 1 hour then evaporated to dryness. The sample is then dissolved in 600 μL of dichloromethane and analyzed by chromatography under the following conditions:
■ Hewlett Packard 6890 Series device
■ ZB-5 HT stationary phase column from Phenomenex (length: 30 m, diameter: 0.25 mm)
■ Temperature: isothermal 60°C to 300°C in 6 min (heating rate: 10°C/min)
■ Gas: Helium; flow rate: 0.8 ml/min
■ Injector: Temperature: 250°C; 50ml/min
■ Flame ionization detector; Temperature: 300°C
■ Injection: Volume 1 µl
A copolymer was thus obtained containing 91% by weight of poly (hydroxy-3-octanoate), 6% by weight of poly (hydroxy-3-hexanoate) and 3% by weight of poly (hydroxy-3-butanoate).
■ Mn = 68,100 g/mol
■ Mw = 149,100 g/mol
■ Ip = 2.2
■ DPn = 531

Example 20 :

A polymer was prepared using the microorganism Pseudomonas putida KT2440 ATCC® 47054™, octanoic acid and acrylic acid.
The culture mode was carried out in continuous axenic conditions at a dilution of D=0.25h-1 in a 3 L chemostat containing 1.1 L of culture medium. The system was aerated with air at a flow of 3 vvm (vvm = volume of air per volume of fermentation medium per minute) for a dissolved oxygen (DO) set point at 30% of saturation.
The production process was carried out using three distinct culture media. The first undefined culture medium (MC1) was used for inoculum preparation. The second defined culture medium (MC2) was used for non-fed batch growth of the microorganism in the fermenter. The third defined culture medium (MC3) was used for feeding, or maintenance, the continuous fermentation containing octanoic acid and acrylic acid (inhibitor of the β-oxidation pathway).
The MC1 and MC2 media are identical to those described in Example 1. The composition in grams per liter of the MC3 medium is described in Table 10 below:

100 mL of inoculum was prepared by suspending a cryotube containing 1 mL of the strain with 100 mL of Nutrient Broth at pH adjusted to 7.0 with 2N NaOH in a 250 mL Fernbach flask and then incubated at 30° C at 150 rpm for 24 hours.

The fermenter containing 1 liter of MC2 culture medium at 30°C was inoculated at an optical density of 0.1 at 630 nm (OD630=0.1). The system was maintained at 30°C with stirring at 700 +/-200 rpm and regulated in cascade with oxygenation for approximately 16 h or until the microorganism could reach its growth plateau.

The feeding of the fermenter with the MC3 medium was initiated when the microorganism reached its growth plateau, the withdrawal was carried out in order to keep the mass of initial fermentation medium. Once the equilibrium state was reached in continuous culture, a fraction of the withdrawal was centrifuged in order to separate the biomass from the fermentation medium. The biomass was dried by freeze-drying, then extracted with dichloromethane for 24 h. The suspension obtained was clarified by filtration on a GF/A filter (Wattman®). The filtrate obtained, comprising the copolymer in solution in dichloromethane, was concentrated by evaporation then dried under high vacuum at 40° C. to constant mass. The crude polyhydroxyalkanoate was purified by precipitation of a solution of the latter in solution in 10 times its weight of dichloromethane, in 10 volumes of cold methanol solution. The solid obtained was dried under high vacuum at 40° C. to constant mass.
A copolymer was thus obtained comprising 96% by weight of poly (hydroxy-3-octanoate), 3% by weight of poly (hydroxy-3-hexanoate) and 1% by weight of poly (hydroxy-3-butanoate).
■ Mn = 67,900 g/mol:
■ Mw = 142,000 g/mol:
■ Ip = 2.1:
■ DPn = 611

Example 21 : PHA copolymer with side chain R ¹ representing an n -hexyl group and R ² representing an n -butyl group

[Chem. 42]:

A polymer was prepared using the microorganism Pseudomonas putida KT2440 ATCC® 47054™, nonanoic acid and acrylic acid. The culture mode is carried out in continuous axenic conditions at a dilution of D=0.25h-1 in a 3L chemostat containing 1.1L of culture medium. The system is aerated with air at a flow rate of 1 vvm for a dissolved oxygen (DO) setpoint at 30% of saturation.
The production process is carried out using three distinct culture media. The first culture medium (MC1) is used for the preparation of the inoculum. The second culture medium (MC2) is used for batch growth of the microorganism in the fermenter. The third culture medium (MC3) is used for feeding, or maintaining, the continuous fermentation containing the carbon source of interest and the inhibitor of the β-oxidation pathway (acrylic acid). The composition in grams per liter of the three media MC1, MC2 and MC3 is described in Table 11 below:

MC1 “inoculum” MC2 “batch” MC3 “continuous” (NH ₄ ) ₂ SO ₄ 4.7 5.02 5.02 Na ₂ HPO ₄ ; 7H ₂ W 12 2.24 2.24 KH ₂ PO ₄ 2.7 0.5 0.5 Glucose 9 3.9 3.9 MgSO ₄ ; 7H2O 0.8 1.03 1.03 Citric acid 1.6 1.03 1.03 Nutrient Broth 1 / / Nonanoic acid / / 3.8 Microelements Solution / 1.4 1.4 Acrylic acid / / 0.2 NaOH 2N QSP pH=6.8 milliQ water QSP m=1000g The composition of Nutrient Broth in mass percentage is 37.5% beef extract and 62.5% peptone. Reference 233000 DIFCO™.
The composition of the microelement solution in grams per liter is described in Table 12 below.

FeSO ₄ ·7H ₂ O 10.0g CaCl ₂ ·2H ₂ O 3.0g ZnSO ₄ ·7H ₂ O 2.2g MnSO ₄ ·4H ₂ O 0.5g H ₃ BO ₃ 0.3g CoCl ₂ ·6H ₂ O 0.2g Na ₂ MoO ₄ ·2H ₂ O 0.15g NiCl ₂ ·6H ₂ O 0.02g CuSO4·5H2O 1.00g MilliQ Water QSP 1000 g 100 mL of inoculum are prepared by suspending a cryotube containing 1 mL at OD=10 of the strain with 100 mL of MC1 “inoculum” at pH previously adjusted to 7.0 with 2N NaOH in a 500 mL Fernbach then incubate at 30° C at 150rpm for 24 hours.
The 3L fermenter containing 1 liter of MC2 “batch” culture medium at 30°C is inoculated at an optical density of 0.1 at 600nm (OD600=0.1). The system is maintained at 30°C with stirring at 700rpm +/-200rpm regulated in cascade with oxygenation for approximately 16 hours and/or until the microorganism can reach its growth plateau.
Feeding the fermenter with the “continuous” MC3 medium is started once the microorganism has reached its growth plateau, the withdrawal is carried out in order to keep the mass of initial fermentation medium. Once the equilibrium state is reached in continuous culture, a fraction of the withdrawal is centrifuged in order to separate the biomass from the fermentation medium. The biomass is dried by freeze-drying before being extracted with dichloromethane for 24 hours. The suspension is clarified by filtration on a GF/A filter (Wattman®). The filtrate composed of PHA in solution in dichloromethane is concentrated by evaporation then dried under high vacuum at 40°C to constant mass.
The molecular weight of the polyhydroxyalkanoate obtained was characterized by size exclusion chromatography, refractive index detection
■ Eluent: THF
■ Analytical flow rate: 1 mL/min
■ Injection: 100 μL
■ Columns: 1 Agilent PLGel Mixed-D 5μm column; 300 x 7.5mm; 1 Agilent PLGel Mixed-C 5μm column; 300 x 7.5mm; 1 Agilent Oligopore column; 300 x 7.5mm
■ at room temperature (25°C)
■ Detection: Waters 2487 Dual Absorbance Detector, Waters 2414 Refractive
■ Index Detector
■ Integrator: refractive index at 45°C and 64mV
■ Empower (GPC Module Relative/conventional molar mass)
■ Empower injection duration 40 min
■ Standards: High mass polystyrene / EasiVial PS-H 4 mL from Agilent Technology Part No. PL2010-0200
The analysis makes it possible to measure the weight average molecular weight (Mw in g/mole), the number average molecular weight (Mn in g/mole), the polydispersity index Ip (Mw/Mn) and the degree of polymerization DPn.
The monomeric composition of the polyhydroxyalkanoate obtained was defined by gas chromatography equipped with a flame ionization detector.
Identification is carried out via the injection of commercial standards and the monomeric composition was determined by methanolysis and sylylation treatment.
To determine the monomeric composition, 7 mg of the polyhydroxyalkanoate polymer was dissolved in 1.5 mL of chloroform and was methanolyzed in the presence of 1.5 mL of a solution of MeOH/HCl (17/2, v/v) at 100°C for 4 hours. The organic phase was then washed with 1 mL of water then dried over MgSO4. Sylilation of the methyl esters formed was carried out by adding 100 μL of BSTFA (N,Obis(trimethylsilyl)trifluoroacetamide) and 100 μL of pyridine to the methylated sample. The solution was heated to 70°C for 1 hour then evaporated to dryness. The sample is then dissolved in 600 μL of dichloromethane and analyzed by chromatography under the following conditions:
■ Hewlett Packard 6890 Series device
■ ZB-5 HT stationary phase column from Phenomenex (length: 30 m, diameter: 0.25 mm)
■ Temperature: isothermal 60°C to 300°C in 6 min (heating rate: 10°C/min)
■ Gas: Helium; flow rate: 0.8 ml/min
■ Injector: Temperature: 250°C; 50ml/min
■ Flame ionization detector; Temperature: 300°C
■ Injection: Volume 1 µl
A copolymer was thus obtained comprising 86% by weight of poly(hydroxy-3-nonanoate), 9% by weight of poly(hydroxy-3-heptanoate and 5% by weight of poly(hydroxy-3-pentanoate)
■ Mn = 65,900 g/mol
■ Mw = 143,600 g/mol
■ Ip = 2.2
■ DPn = 531

Example 22:

A polymer was prepared according to the procedure of Example 19 using nonanoic acid (instead of octanoic acid) and without acrylic acid.
A copolymer was thus obtained comprising 68% by weight of poly(hydroxy-3-nonanoate), 27% by weight of poly(hydroxy-3-heptanoate) and 5% by weight of poly(hydroxy-3-pentanoate).
■ Mn = 55,800 g/mol
■ Mw = 124,500 g/mol
■ Ip = 2.2
■ DPn = 469

Example 23:

A polymer was prepared according to the procedure of Example 19 using dodecanoic acid (instead of octanoic acid).
A copolymer was obtained comprising 44% by weight of poly(hydroxy-3-dodecanoate) and 38% by weight of poly(hydroxy-3-decanoate), and 18% by weight of poly(hydroxy-3-octanoate).
■ Mn = 67,400 g/mol
■ Mw = 129,800 g/mol
■ Ip = 1.9
■ DPn = 484
Example 24 : PHA copolymer with side chain R ¹ representing an n -pentyl group and R ² representing an n-propyl group

[Chem. 41]:
The process for obtaining Example 24 is an adaptation of the article Biomacromolecules 2012, 13, 2926−2932: “Biosynthesis and Properties of Medium-Chain-Length Polyhydroxyalkanoates with Enriched Content of the Dominant Monomer”
The microorganism used is Pseudomonas putida ATCC® 47054™
The culture mode is carried out in continuous axenic conditions at a dilution of D = 0.25h ^-1 in a 3L chemostat containing 1.1L of culture medium.
The system is aerated with air at a flow rate of 3 vvm for a dissolved oxygen (DO) setpoint at 30% of saturation.
Assembly :

See
The production process is carried out using three distinct culture media
The first undefined culture medium (MC1) is used for the preparation of the inoculum.
The second defined culture medium (MC2) is used for batch growth of the microorganism in the fermenter.
The third defined culture medium (MC3) is used for feeding, or maintaining, the continuous fermentation containing the carbon source of interest and the inhibitor of the β-oxidation pathway.
The composition in grams per liter of the three media is described in Table 13. Composition in grams per liter of culture media for inoculum and maintenance.

The composition of Nutrient Broth in mass percentage is 37.5% beef extract and 62.5% peptone. Reference 233000 DIFCO™.
The composition of the microelement solution in grams per liter is described in Table 14 composition in grams per liter of the microelement solution

100 mL of inoculum are prepared by suspending a cryotube containing 1 mL of the strain with 100 mL of Nutrient Broth at pH adjusted to 7.0 with 2N NaOH in a 250 mL Fernbach then incubate at 30°C at 150 rpm for 24 hours .

The fermenter containing 1 liter of MC2 culture medium at 30°C is inoculated at an optical density of 0.1 at 630 nm (OD630=0.1). The system is maintained at 30°C with stirring at 700 rpm +/-200 rpm regulated in cascade with oxygenation for approximately 16 hours and or until the microorganism can reach its growth plateau.

The fermenter is fed with the MC3 medium once the microorganism has reached its growth plateau, the withdrawal is carried out in order to keep the mass of initial fermentation medium. Once the equilibrium state is reached in continuous culture, a fraction of the withdrawal is centrifuged in order to separate the biomass from the fermentation medium. The biomass is dried by freeze-drying before being extracted with dichloromethane for 24 hours. The suspension is clarified by filtration on a GF/A filter (Wattman®). The filtrate, composed of PHA in solution in dichloromethane, is concentrated by evaporation then dried under high vacuum at 40°C to constant mass.

The PHA can optionally be purified by solubilization and successive precipitation such as a dichloromethane methanol system for example.

The PHA copolymer of Example 23 was fully characterized by spectrometric and spectroscopic methods. By gas chromatography fitted with an FID detector it appears that the copolymer contains 96% of radical R ¹ = n-pentyl and 4% of radical R ² = n-propyl.
Example 25: PHA with side chain R ¹ representing a 5% linear 8-bromo-n-octanoyl group and R ² representing an n-hexyl group

[Chem. 44]:

The process for synthesizing the compound of Example 1 is adapted from the article: Fed-batch production of unsaturated medium-chain-length polyhydroxyalkanoates with controlled composition by Pseudomonas putida KT2440 , Z. Sun, JA Ramsay, M. Guay, BA Ramsay, Applied Microbiological Biotechnology, 82. 657–662. 2009.

The microorganism used is Pseudomonas putida KT2440 ATCC® 47054™. The culture mode is carried out in axenic conditions in discontinuous growth supplied with a maintenance solution containing a mixture of carbon sources at a rate of µ=0.15h-1 in a 3L chemostat containing 2.5L of culture medium.

The system is ventilated with an air flow of 0.5 vvm for a dissolved oxygen (DO) setpoint at 30% of saturation. The pH is regulated with a solution composed of ammonia and glucose at 15% and 40% final mass respectively. The temperature of the fermentation medium is regulated at 30°C.

Setting up the fed batch growth fermentation mode:
The fermentation medium is regulated in temperature-dissolved oxygen pressure and pH (not shown).

The production process is carried out using three distinct culture media. The first culture medium defined MC1 “inoculum” is used for the preparation of the preculture. The second defined culture medium MC2 “bach” is used for the unfed batch growth of the microorganism with the primary carbon sources in the Fernbachs flasks. The third culture medium defined MC3 “maintenance” is used for batch feeding, or maintenance, of the fermentation with the carbon sources of interest at a flow rate calibrated according to the growth of the microorganism.

[Table 15]:

The composition of Nutrient Broth in mass percentage is 37.5% beef extract and 62.5% peptone. Reference 233000 DIFCO™.
[Painting. 16]:

100 mL of preculture are prepared by suspending a cryotube containing 1 mL of the strain with 100 mL “inoculum” culture media at pH adjusted to 6.8 with 2N NaOH in a 250 mL Fernbach flask then incubate at 30°C at 150 rpm for 24 hours. 1.9 L of MC2 “BATCH” culture medium placed in a 3L chemostat previously sterilized are inoculated at OD = 0.1 with the 100 mL of preculture. After 4 hours at 30°C at 850 rpm, the introduction of maintenance is carried out by applying the flow rate defined by equation 1.

At the end of the introduction, the biomass is isolated by centrifugation then washed three times with water. The biomass is dried by freeze-drying before being extracted with ethyl acetate for 24 hours. The suspension is clarified by filtration on a GF/A filter (Wattman®). The filtrate, composed of PHA in solution in ethyl acetate, is concentrated by evaporation then dried under high vacuum at 40°C to constant mass.

PHA can optionally be purified by solubilization and successive precipitation in an ethyl acetate/Ethanol 70% methanol system for example.

PHA has been fully characterized by spectroscopic and spectrometric method and conforms to the expected chemical structure: 95 molar % of unit (B) of which R ² = n-hexyl (71%) and n-butyl (24%) and 5 Mole % of unit (A) including R1 = 8-bromo-n-octanyl (5.9%) and 6-bromo-n-hexyl (0.2%).

The compounds of examples 1 to 25 can be mixed with one or more modified polysaccharides b) as defined above; in the presence of fatty substances c) liquid such as isododecane and possibly water e). The mixture of the PHA(s) a) with the modified polysaccharide(s) b) can be carried out at room temperature, with stirring, in the presence of liquid fatty substance c) and possibly different organic solvent(s) d ) as defined previously. According to a variant of water e) is added to the mixture of a), b) and c) then one or more organic solvent(s) different from c) d) are optionally added as defined previously .

Examples 26 and 27:

Compositions 27 (comparative) and 28 (invention) described in Table 17 below were prepared:

[Painting. 17]: Ingredients 26
Comparative 27
Invention PHA of example 21 20 20 Dextrin palmitate - 5 Isododecane 77.5 72.5 Ethanol 2.5 2.5 Procedure for preparing the compositions:
The PHA, isododecane and ethanol are stirred at 2500 rpm, at a temperature of 25°C. The modified polysaccharide/associative polymer is introduced and the medium is heated from 25°C to 80°C with stirring at 2500rpm. The medium is maintained at 80°C for 30 minutes with stirring at 3000rpm then cooled from 80°C to 25°C with stirring at 2500rpm.

Performance evaluations

Wear resistance

Description of the test:

The first step of this test is to make a deposit. The deposits are prepared on a Byko Chart Lenata contrast card with a film puller and left to dry for 24 hours at 25°C and 45% RH. The final thickness of the deposit is 30 µm.

On this dry deposit, a wear resistance test is carried out. A hydrophilic steel ball is used as a wiper. The load or normal force applied is 1N, the displacement speed is 50 mm.s ^-1 . On each film, tracks are defined on which the wiper makes multiple passes. In the case of wear measurements, permanent contact is maintained during the back and forth movements of the ball on the deposit. The number of passages increases for each track. Wear resistance is quantified as corresponding to the minimum number of passes to completely wear out the deposit.

In the case of this study the number of passages per track are respectively 10, 30, 50,100, 200 and 300 passages.

Each measurement was the subject of 5 replies.
Wear resistance test results will be quantified as described in the table below:

[Painting. 18]: Wear resistance Ratings 0-10 ball passes -- 10-30 ball passes - 30-50 ball passes + 50-100 ball passes ++ 100-200 ball passes +++ 200-300 ball passes ++++ > 300 ball passes +++++ Results : Examples Ratings 26 (comparative) -- 27 (invention) +++++

Water resistance

Description of the test:

On the same 30 μm dry deposit made for the wear test, the sensitivity is evaluated after depositing a drop of aggressor (20 μl for water) on the surface of the deposit. The evaluations are made after 1 hour of contact between the attacker and the depot. The level of sensitivity to attackers is rated as follows. It appeared that the composition of the invention (ex. 27) is very resistant to water because the film remained intact.

Claims (24)

Composition, in particular cosmetic, comprising:
a) one or more polyhydroxyalkanoate (PHA) copolymer(s) which contains, and preferably consists of, several repeating units chosen from the units(HAS)following, as well as their optical and geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates:
-[-O-CH(R¹)-CH₂-C(O)-]- unit(HAS)
polymeric units(HAS)in which :

• R ¹ represents a hydrocarbon chain, non-cyclic saturated or unsaturated, linear or branched, or cyclic saturated or unsaturated, aromatic or non-aromatic, comprising from 5 to 28 carbon atoms; preferably the hydrocarbon chain is chosen from i) (C ₅ -C ₂₈ ) alkyl, linear or branched, ii) (C ₅ -C ₂₈ ) alkenyl, linear or branched, iii) (C ₅ -C ₂₈ ) alkynyl, linear or branched, preferably the hydrocarbon group is linear;

said hydrocarbon chain being:

• optionally substituted by one or more atoms or groups chosen from: a) halogen such as chlorine or bromine, b) hydroxy, c) thiol, d) (di)(C ₁ -C ₄ )(alkyl)amino, e) (thio )carboxy, f) (thio)carboxamide –C(O)-N(R _a ) ₂ or –C(S)-N(R _a ) ₂ , g) cyano, h) iso(thio)cyanate, i) ( hetero)aryl such as phenyl or furyl, and j) (hetero)cycloalkyl such as anhydride, epoxide or dithiolane, k) cosmetic active ingredient; l) RX with R representing a group chosen from α) cycloalkyl such as cyclohexyl, β) heterocycloalkyl such as sugar preferably monosaccharide such as glucose, γ) (hetero)aryl such as phenyl, δ) cosmetic active ingredient, m) thiosulfate and representing a') O, S, N(R _a ) or Si(R _b )(R _c ), b') S(O) _r , or (thio)carbonyl, c') or the associations of a') with b') such as (thio)ester, (thio)amide, (thio)urea, sulfonamide; R _a representing a hydrogen atom, or a (C ₁ -C ₄ )alkyl group, or aryl (C ₁ -C ₄ )alkyl such as benzyl, preferably R _a represents a hydrogen atom; R _b and R _c , identical or different, represent a (C ₁ -C ₄ ) alkyl or (C ₁ -C ₄ ) alkoxy group, particularly a single substituent; preferably chosen from b) halogen, and j) such as epoxide; and or
• optionally interrupted by one or more a') heteroatoms such as O, S, N(R _a ), and Si(R _b )(R _c ), b') S(O) _r , (thio)carbonyl, c') or the associations of a') with b') such as (thio)ester, (thio)amide, (thio)urea, sulfonamide with r being 1 or 2, R _a being as defined above, preferably R _a represents a hydrogen atom, R _b and R _c , being as defined above; And

b) one or more modified polysaccharide(s); And
c) possibly one or more fatty substances; preferably liquid at 25°C and atmospheric pressure; And
d) optionally one or more organic solvent(s) different from c); And
e) possibly water,
preferably composition C1 contains ingredients c) + d). Composition C1’, according to the preceding claim, comprising:
a) one or more polyhydroxyalkanoate (PHA) copolymer(s) which contains, and preferably consists of, at least two different repeating polymeric units chosen from the units(HAS)And(B)following, as well as their optical and geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates:
-[-O-CH(R¹)-CH₂-C(O)-]- unit(HAS)
-[-O-CH(R²)-CH₂-C(O)-]- unit(B)
polymeric units(HAS)And(B)in which :

• R ¹ is as defined in the preceding claim; and or

• optionally interrupted by one or more a') heteroatoms such as O, S, N(R _a ), and Si(R _b )(R _c ), b') S(O) _r , (thio)carbonyl, c') or the associations of a') with b') such as (thio)ester, (thio)amide, (thio)urea, sulfonamide with r being 1 or 2, R _a being as defined above, preferably R _a represents a hydrogen atom, R _b and R _c , being as defined above;
• R ² represents a hydrocarbon group, cyclic or non-cyclic, linear or branched, saturated or unsaturated, comprising from 3 to 30 carbon atoms optionally substituted by one or more atoms or groups a) to m) and/or optionally interrupted by one or more heteroatoms or groups a') to c') as defined for R¹; in particular chosen from (C₃-VS₂₈)alkyl, linear or branched, and (C₃-VS₂₈) linear or branched alkenyl, in particular a linear hydrocarbon group, more particularly (C₄-VS₂₀)alkyl or (C₄-VS₂₀)alkenyl, preferably the hydrocarbon group has a carbon number corresponding to the number of carbon atoms of the radicalR ¹ from which at least one carbon atom is subtracted, preferably corresponding to the number of carbon atoms of the radicalR ¹ from which two carbon atoms are subtracted; And

b) one or more modified polysaccharide(s); And
c) possibly one or more fatty substances; preferably liquid at 25°C and atmospheric pressure; And
d) optionally one or more organic solvent(s) different from c);
e) possibly water,
Being heard that :

• (A) is different from (B) and

preferably composition C1 contains ingredients c) + d). Composition C1 or C1' according to claim 1 or 2, in which the PHA copolymer(s) a) contains the repeating unit of formula (I), as well as their optical, geometric isomers, their acid salts or basic, organic or mineral, and their solvates such as hydrates:
(I)
Formula(I)in which :

• R ¹ and R ² are as defined in claim 1;
• m and n are integers greater than or equal to 1, preferably the sum n + m is inclusively between 450 and 1400;

preferably m > n whenR ¹ AndR ² represent an unsubstituted and uninterrupted alkyl group – more preferably when R¹and R²are linear alkyl then R¹is a C alkyl group₅-VS₁₃; and R²represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 2 carbon atoms; And
preferably m < n whenR ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or interrupted alkenyl or optionally substituted and/or interrupted alkynyl group, andR ² represents an alkyl group. Composition C1 or C1' according to claim 1, in which the PHA copolymer(s) a) contains three different repeating polymeric units(HAS),(B)And(VS), preferably consisting of 3 different polymeric units(HAS),(B)And(VS),, following, as well as their optical, geometric isomers and their solvates such as hydrates:
-[-O-CH(R¹)-CH₂-C(O)-]- unit(HAS)
-[-O-CH(R²)-CH₂-C(O)-]- unit(B)
-[-O-CH(R³)-CH₂-C(O)-]- unit(VS)
polymeric units(HAS),(B)And(VS)in which :

• R ¹ , and R ² are as defined in claim 1 or 2;
• R ³ represents a hydrocarbon group, cyclic or non-cyclic, linear or branched, saturated or unsaturated, comprising from 1 to 30 carbon atoms optionally substituted by one or more atoms or groups a) to m) and/or optionally interrupted by one or several heteroatoms or groups a') to c') as defined for R ¹ in claim 1 or 2; in particular represents a hydrocarbon group chosen from (C ₁ -C ₂₈ ) alkyl, linear or branched, and (C ₂ -C ₂₈ ) linear or branched alkenyl, in particular a linear hydrocarbon group, more particularly (C ₄ -C ₂₀ ) alkenyl, preferably the hydrocarbon group has a number of carbons corresponding to the number of carbon atoms of the radical R ¹ , or corresponding to the number of carbon atoms of the radical R ¹ from which at least three carbon atoms are subtracted, preference corresponding to the number of carbon atoms of the radical R ¹ from which four carbon atoms are subtracted; And

Being heard that :

• (A) is different from (B) and (C) , (B) is different from (A) and (C), and (C) is different from (A) and (B) ; And

preferably whenR ¹ ,R ² AndR ² represent an unsubstituted and uninterrupted alkyl group the molar percentage in unit(HAS)is greater than the mole percentage in units(B),and the mole percentage in unit(B)is greater than the mole percentage in units(VS)– more preferentially when R¹,R²and R³are linear alkyl, then R¹is a C alkyl group₅-VS₁₃; and R²represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 2 carbon atoms, and R³represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 4 carbon atoms,And
preferably whenR ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group, then the molar percentage in unit(HAS)is less than the mole percentage in unit(B)and the mole percentage in unit(VS)is less than the mole percentage in unit(B)especially if R²represents an alkyl group and/or R³represent an alkyl group;
more preferably the PHA copolymer(s) a) contains the repeating unit of formula(II),as well as their optical and geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates:
(II)
Formula(II)in which :

• R ¹ , R ² and R ³ are as defined above;
• m , n and p, are integers greater than or equal to 1, preferably the sum n + m + p is inclusively between 450 and 1400;

preferably m > n + p whenR ¹ ,R ² AndR ³ represent an unsubstituted and uninterrupted alkyl group - more preferably when R¹,R²and R³are linear alkyl, then R¹is a C alkyl group₅-VS₁₃; and R²represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 2 carbon atoms, and R³represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 4 carbon atoms; And
preferably m < n + p whenR ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group, andR ² AndR ³ represent an alkyl group. Composition C1 or C1' according to any one of the preceding claims, in which the PHA copolymer(s) a) contains four different repeating polymeric units(HAS),(B),(VS), And(D)preferably consists of 4 different polymer units(HAS),(B),(VS), And(D), following, as well as their optical, geometric isomers and their acid or base, organic or mineral salts, as well as their solvates such as hydrates:
-[-O-CH(R¹)-CH₂-C(O)-]- unit(HAS)
-[-O-CH(R²)-CH₂-C(O)-]- unit(B)
-[-O-CH(R³)-CH₂-C(O)-]- unit(VS)
-[-O-CH(R⁴)-CH₂-C(O)-]- unit(D)
polymeric units(HAS),(B),(VS)And(D)in which :

• R ¹ ,R ² AndR ³ are as defined in any one of claims 1 to 4;
• R ⁴ represents a hydrocarbon group, cyclic or non-cyclic, linear or branched, saturated comprising from 3 to 30 carbon atoms optionally substituted by one or more atoms or groups a) to m) and/or optionally interrupted by one or more heteroatoms or groups a') to c') as defined for R ¹ in any one of the preceding claims; in particular represents a hydrocarbon group chosen from (C ₄ -C ₂₈ ) alkyl, linear or branched optionally substituted by one or more atoms or groups a) to m) and/or interrupted by one or more heteroatoms or groups a') to c ') as defined for R ¹ as defined previously; And

Being heard that :

• (A) is different from (B) , (C) and (D) , (B) is different from (A) , (C) and (D), and (C) is different from (A) , (B) and D) ; and (D) is different from (A) , (B) and (C) ;
• preferably when R ¹ , R ² , R ³ and R ⁴ represent an unsubstituted and uninterrupted alkyl group, the mole percentage in units (A) is greater than the molar percentage in units (B), greater than the molar percentage in units (C ), and greater than the molar percentage in units (D) - more preferably when R ¹ , R ² , R ³ and R ⁴ are linear alkyl, then R ¹ is a C ₅ -C ₁₃ alkyl group; and R ² represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which 2 carbon atoms are subtracted, R ³ represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ to which 4 carbon atoms are subtracted, and R ⁴ represents a linear alkyl group with a carbon number corresponding to the carbon number of R ¹ from which 6 carbon atoms are subtracted , and
• preferably whenR ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group, then the molar percentage in unit(HAS)is less than the mole percentage in unit(B),THE mole percentage in unit(VS)is less than the mole percentage in unit(B),and is less than the mole percentage in unit(VS),especially ifR ² represents an alkyl group and/orR ³ represent an alkyl group, andR ⁴ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group;

more preferably the PHA copolymer(s) comprise the repeating unit of formula(III),as well as their optical and geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates:
(III)
Formula(III)in which :

• R ¹ , R ² , R ³ , and R ⁴ are as defined above;
• m , n, p, and v are integers greater than or equal to 1, preferably the sum n + m + p + v is inclusively between 450 and 1400;

preferably whenR ¹ ,R ² ,R ³ AndR ⁴ represent an unsubstituted and uninterrupted alkyl group then m > n + p + q-more preferentially when R¹,R²,R³and R⁴are linear alkyl, then R¹is a C alkyl group₅-VS₁₃; and R²represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 2 carbon atoms, R³represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 4 carbon atoms, and R⁴represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 6 carbon atoms; And
preferably whenR ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group, andR ² AndR ³ represent an alkyl group, andR ⁴ represents a group a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group then n > m + v; more preferably n + p > m + v. Composition C1 or C1' according to any one of the preceding claims, in which the PHA copolymer(s) a) contains five different repeating polymeric units(HAS),(B),(VS),(D), And(E)preferably consists of 5 different polymer units(HAS),(B),(VS),(D), And(E)following, as well as their optical, geometric isomers and their acid or base, organic or mineral salts, as well as their solvates such as hydrates:
-[-O-CH(R¹)-CH₂-C(O)-]- unit(HAS)
-[-O-CH(R²)-CH₂-C(O)-]- unit(B)
-[-O-CH(R³)-CH₂-C(O)-]- unit(VS)
-[-O-CH(R⁴)-CH₂-C(O)-]- unit(D)
-[-O-CH(R⁵)-CH₂-C(O)-]- unit(E)
polymeric units(HAS),(B),(C), (D)And(E)in which :

• R ¹ ,R ² ,R ³ AndR ³ are as defined in any one of the preceding claims; And
• R ⁵ represents a hydrocarbon group, cyclic or non-cyclic, linear or branched, saturated comprising from 3 to 30 carbon atoms optionally substituted by one or more atoms or groups a) to m) and/or optionally interrupted by one or more heteroatoms or groups a') to c') as defined for R ¹ ; in particular represents a hydrocarbon group chosen from (C ₄ -C ₂₈ ) alkyl, linear or branched, substituted by one or more atoms or groups a) to l) and/or interrupted by one or more heteroatoms or groups a') to c ') as defined for R ¹ ; preferably the hydrocarbon group has a number of carbons corresponding to the number of carbon atoms of the radical R ⁴ from which at least one carbon atom is subtracted, preferably corresponding to the number of atoms of carbon of the radical R ⁴ from which at least 2 carbon atoms are removed, preferably from which 2 carbon atoms are removed;

Being heard that :

• (A) is different from (B) , (C), (D) and (E) ; (B) is different from (A) , (C), (D) and (E), and (C) is different from (A) , (B), (D) and (E) ; (D) is different from (A) , (B), (C) and (E) ; and (E) is different from (A) , (B), (C) and (D);
• preferably whenR ¹ ,R ² ,R ³ ,R ⁴ AndR ⁵ represent an unsubstituted and uninterrupted alkyl group the molar percentage in unit(HAS)is greater than the mole percentage in units(B),greater than the mole percentage in unit(VS),and greater than the mole percentage in unit(D),greater than the mole percentage in unit(E) -more preferentially when R¹,R²,R³, R⁴and R⁵are linear alkyl, then R¹is a C alkyl group₅-VS₁₃; and R²represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 2 carbon atoms, R³represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 4 carbon atoms, R⁴represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 6 carbon atoms, and R⁵represents a linear alkyl group with a carbon number corresponding to the carbon number of R¹from which we subtract 8 carbon atoms,And
• preferably whenR ¹ represents a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group, then the molar percentage in unit(HAS)is less than the mole percentage in unit(B),is less than the mole percentage in unit(B),and the mole percentage in unit(VS)is less than the mole percentage in unit(B)especially ifR ² represents an alkyl group and/orR ³ represent an alkyl group, andR ⁴ AndR ⁵ represent a substituted and/or interrupted alkyl group, optionally substituted and/or optionally interrupted alkenyl or optionally substituted and/or optionally interrupted alkynyl group;

more preferably the PHA copolymer(s) comprise the repeating unit of formula(IV),as well as their optical and geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates:
(IV)
Formula(IV)in which :

• R ¹ , R ² , R ³ , R ⁴ and R ⁵ are as defined above;
• m , n, p, v and z are integers greater than or equal to 1, preferably the sum n + m + p + v + z is inclusively between 450 and 1400;
• preferably when R ¹ , R ² , R ³ , R ⁴ and R ⁵ represent an unsubstituted and uninterrupted alkyl group then m > n + p + v + z;
• preferably whenR ¹ represents a substituted and/or interrupted alkyl group; optionally substituted and/or optionally interrupted alkenyl; or optionally substituted and/or optionally interrupted alkynyl,R ² AndR ³ represent an alkyl group and the groupsR ⁴ AndR ⁵ represent a substituted and/or interrupted alkyl group; optionally substituted and/or optionally interrupted alkenyl; or optionally substituted and/or optionally interrupted alkynyl, then n > m + v + z; more preferably n + p > m + v + z.

Composition C1 or C1' according to any one of the preceding claims, in which R ¹ represents a hydrocarbon (C ₅ -C ₂₈ ) alkyl chain, linear or branched, preferably linear, more particularly R ¹ is an alkyl group substituted by one or more atoms or groups a) to k), said alkyl group comprising 5 to 12, preferably between 6 and 10 carbon atoms, more preferably between 7 and 9 carbon atoms such as n-octyl; preferably R ¹ represents a hydrocarbon chain, substituted by one or more (preferably one) groups chosen from b) hydroxy, c) thiol, d) (di)(C ₁ -C ₄ )(alkyl)amino, preferably amino, e) carboxy, i) (hetero)cycloalkyl such as anhydride, or epoxide, j) cosmetic active chosen from colored or uncolored, fluorescent or non-fluorescent chromophores such as optical brighteners, UV filters, h) (hetero)aryl such as phenyl or furyl, k) RX with R representing a group chosen from α) cycloalkyl such as cyclohexyl, β) heterocycloalkyl such as sugar preferably monosaccharide such as glucose, γ) (hetero)aryl such as phenyl, δ) cosmetic active as defined previously _and R _a representing a hydrogen atom, a (C ₁ -C ₄ )alkyl group, or aryl (C ₁ -C ₄ )alkyl such as benzyl, preferably R _a represents a hydrogen atom;
even more preferably the PHA copolymer(s) are such that R ¹ represents a hydrocarbon chain, in particular an alkyl group as defined above, which is substituted by one or more (preferably one) groups chosen from a) halogen such as chlorine or bromine , b) hydroxy, d) (di)(C ₁ -C ₄ )(alkyl)amino preferably amino, e) carboxy, i) (hetero)cycloalkyl such as epoxide, h) (hetero)aryl such as phenyl or furyl , k) RX with R representing a group chosen from α) cycloalkyl such as cyclohexyl, β) heterocycloalkyl such as sugar preferably monosaccharide such as glucose, γ) (hetero)aryl such as phenyl, and X representing a') O, S , N(R _a ) preferably S; R _a representing a hydrogen atom, a (C ₁ -C ₄ ) alkyl group, preferably R _a represents a hydrogen atom;
better said hydrocarbon chain R ¹ is substituted at the end of the chain on the opposite side of the carbon atom which carries said radical R ¹ . Composition C1 or C1' according to any one of the preceding claims, in which R ¹ represents a hydrocarbon chain, in particular alkyl, in particular C ₇ -C ₂₀ , more particularly C ₈ -C ₁₈ , even more particularly C ₉ -C ₁₆ , which is interrupted by one or more (preferably one) atoms or groups chosen from O, S, N(R _a ), carbonyl, or their associations such as ester, amide, urea, with R _a being as defined in the preceding claims, preferably R _a represents a hydrogen atom; preferably an alkyl group which is interrupted by one or more atoms chosen from O, S, more preferably by an O, or S atom, in particular S; preferably said interrupted hydrocarbon chain, in particular alkyl, is linear. Composition C1 or C1' according to any one of the preceding claims, in which R ¹ is of the following formula –(CH ₂ ) _r -X-(ALK) _u -G with X being as defined above, in particular representing O, S, N(R _a ), preferably S, ALK represents a (C ₁ -C ₁₀ ) alkylene chain, linear or branched, preferably linear, more particularly (C ₁ -C ₈ ) alkylene, r represents an integer inclusively between 6 and 11, preferably between 7 and 10 such as 8; u is 0 or 1; and G represents a hydrogen atom, or a group chosen from hydroxy, carboxy, (di)(C ₁ -C ₄ )(alkyl)amino, (hetero)aryl in particular aryl such as phenyl, cycloalkyl such as cyclohexyl, or sugar, in particular a monosaccharide optionally protected by one or more groups such as acyl, preferably Suc represents with R ^e representing a group R ^f -C(O)-, with R ^f representing a (C ₁ -C ₄ ) alkyl group such as methyl. Preferably when u is 0, G represents a cycloalkyl group such as cyclohexyl, or sugar as defined above. According to another advantageous variant when u is 1, G represents a hydrogen atom, or a group chosen from hydroxy, carboxy, (di)(C ₁ -C ₄ )(alkyl)amino, (hetero)aryl in particular aryl such than phenyl. Composition C1 or C1' according to any one of the preceding claims, in which the PHA copolymer(s) a) comprise a radical R ² chosen from (C ₁ -C ₂₈ ) alkyl, linear or branched, and (C ₂ -C ₂₈ ) alkenyl linear or branched, in particular a linear hydrocarbon group; particularly (C ₃ -C ₂₀ ) alkyl or (C ₃ -C ₂₀ ) alkenyl, preferably the hydrocarbon group has a carbon number corresponding to the number of carbon atoms of the radical R ¹ from which at least one carbon atom is subtracted , preferably corresponding to the number of carbon atoms of the radical R ¹ from which at least two carbon atoms are subtracted. Composition C1 or C1' according to any one of the preceding claims, in which the PHA copolymer(s) a) comprise a radical R ² is a (C ₁ -C ₈ ) alkyl group, linear or branched, preferably linear, particularly in (C ₂ -C ₆ )alkyl, preferably (C ₄ -C ₆ )alkyl such as n-pentyl or n-hexyl; or R ² is a (C ₃ -C ₈ ) branched alkyl group, particularly (C ₄ -C ₆ ) alkyl, preferably branched (C ₄ -C ₅ ) alkyl such as isobutyl. Composition C1 or C1' according to any one of claims 1, 3, 4 to 11, in which the PHA copolymer(s) are such that, when R ¹ represents a (C ₃ -C ₃₀ ) alkyl group, the unit (A) is preferably present in a molar percentage ranging from 0.5% to 99%, more preferably from 50% to 99%, more particularly from 60% to 99% and even more preferably from 70% to 99%. According to this embodiment, the unit (B) is preferably present in a molar percentage ranging from 2 to 40%; and the unit (C) is preferably present in a molar percentage ranging from 0.5 to 20% relative to all of the units (A) , (B) and (C) . Composition C1 or C1' according to any one of claims 1, 3, 4 to 11, in which the PHA copolymer(s) a) are such that whenR ¹ represents hydrocarbon chain chosen from i) (C₅-VS₂₈)alkyl, linear or branched, ii) (C₅-VS₂₈)alkenyl, linear or branched, iii) (C₅-VS₂₈)alkynyl, linear or branched, preferably the hydrocarbon group is linear said hydrocarbon chain being substituted by one or more atoms or groups a) to m) and/or interrupted by one or more heteroatoms or groups a') to c') such as defined for R¹; in particular represents a hydrocarbon group chosen from (C₄-VS₂₈) alkyl, linear or branched optionally substituted by one or more atoms or groups a) to m) and/or interrupted by one or more heteroatoms or groups a’) to c’) as defined above,

• the unit (A) is present in a molar percentage ranging from 0.1 to 99%, preferably a molar percentage ranging from 0.5 and 50%, more preferably a molar percentage ranging from 1 and 40%, even more preferably a molar percentage ranging from 2 and 30%, better a molar percentage ranging from 5 and 20%; even better a mole percentage ranging from 10 and 30% by mole of unit (A) ; And
• the unit (B) is present in a molar percentage ranging from 1% to 99.5%, preferably from 1% to 90%, more preferably from 2% to 70%, most particularly from a molar percentage of 2 to 10 %; And
• the unit (C) is present in a molar percentage ranging from 0.5 to 20%, relative to all of the units (A) , (B) and (C) ; advantageously, the PHA copolymer(s) of the invention comprise from 2% to 10% by mole of unit (B) ; and from 0.5% to 7% by mole of unit (C) , more advantageously the copolymer comprises from 5% to 35% by mole of unit (B) ; and from 0.5% to 7% in mole of unit (C) ..

Composition C1 or C1' according to any one of the preceding claims, in which the PHA copolymer(s) which comprise the repeating units(HAS)following, as well as their optical and geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates: (HAS) R ¹ A1 -ALK ₁ -S-ALK ₂ -COOH A2 -ALK ₁ -S-ALK ₂ -H A3 -ALK ₁ -S-ALK ₂ -OH A4 -ALK ₁ -S-ALK ₂ -NH ₂ AT 5 -ALK ₁ -S-Cycl' A6 -ALK ₁ -S-CH ₂ -Fur A7 -ALK ₁ -S-Suc AT 8 -ALK ₁ -S-ALK ₂ -Ar A9 -ALK ₁ -Hal A10 -ALK ₁ -CN A11 -ALK ₁ -CH=CR _r R _w AT 12 -ALK ₂ -H Repeater unit A1 to A12 in which:
-ALK₁represents a divalent hydrocarbon radical in C₁-VS₂₀linear or branched, preferably C₁-VS₁₀linear or branched, more preferably linear;
-ALK₂represent a divalent hydrocarbon radical in C₁-VS₂₀linear or branched, preferably C₁-VS₁₂linear or branched;
- Rr and Rw independently designate a hydrogen atom or an alkyl radical (C₁-VS₄such as methyl, preferably Rr and Rw are identical;
- Hal represents a halogen atom such as bromine;
- Ar: represents a (hetero)aryl group such as phenyl;
- Cycl': represents a cycloalkyl group such as cyclohexyl or heterocycloalkyl such as dithiolane or epoxide, preferably epoxide;
- Fur: represents a furyl group, preferably 2-furyl;
- Suc: represents a sugar group, in particular a monosaccharide possibly protected by one or more groups such as acyl, in particular acetyl.
Particularly the stereochemistry of carbon atoms carrying R radicals¹is of configuration (R). Composition C1 or C1' according to any one of the preceding claims, in which the PHA copolymer(s) a) comprise the following repeating units as well as their optical, geometric isomers, their acid or base, organic or mineral salts, and their solvates such as hydrates:


m and n are as defined above, Hal represents a halogen atom such as bromine and t represents an integer between 1 and 10, preferably between 3 and 8 such as 6.
Ar: represents a (hetero)aryl group such as phenyl;
Ar': represents a (C ₁ -C ₄ )alkyl(hetero)aryl group such as t-Butylphenyl, preferably 4- t -butylphenyl;
Cycl: represents a cyclohexyl group;
Fur: represents a furyl group, preferably 2-furyl;
Suc: represents a sugar group, in particular a monosaccharide optionally protected by one or more groups such as acyl, preferably Suc represents:

more preferably the PHA copolymer(s) have the following formula, as well as their optical isomers, their organic or mineral acid or base salts, and their solvates such as hydrates:

M, n, Hal, t, Ar, Ar', Cycl, Fur, and Suc are as defined above for compounds (1) to (14).

s


preferably the PHA(s) a) of the invention are chosen from compounds (15), (16) and (17) in particular (16); more particularly the PHA(s) a) of the invention are chosen from compounds (15'), (16') and (17') in particular (16'); more preferably the PHA(s) a) of the invention are chosen from compounds (25), (26), (31) and (32) in particular (26),. Composition C1 or C1' according to any one of the preceding claims, in which b) the polysaccharide(s) is(are) chosen from cationic, nonionic, anionic or amphoteric, nonionic polysaccharides, preferably non-ionic, modified by the presence on said polysaccharide(s) of at least one aliphatic hydrocarbon chain, cyclic or non-cyclic, linear or branched, saturated or unsaturated, aromatic or not, comprising from 6 to 30 carbon atoms optionally substituted by one or more atoms or groups a) to m) and/or optionally interrupted by one or more heteroatoms or groups a') to c') as defined for R ¹ of (A); particularly modified polysaccharides derived from: i) gum arabic; ii) ghatti gum; iii) karaya gum; iv) tragacanth gum; v) agar; vi) alginates; vii) carrageenans and furcellerans; viii) guar gum; ix) locust bean gum; x) fenugreek gum; xi) tamarind gum; xii) konjac gum; xiii) xanthan gum or dehydroxanthan gum; xiv) gellan gum; xv) scleroglucan gum; xvi) cellulose; xvii) starch; xviii) inulin; and xix) pectin, preferably chosen from xvi), xvii) and xviii), more preferably xvii). Composition C1 or C1' according to any one of the preceding claims, in which b) the polysaccharide(s) is(are) chosen from xvi) cellulose or its derivatives such as hydroxy(C₁-VS₅)alkylcelluloses, xvii) starch and xviii) inulin; said polysaccharides xvi), xvii) and xviii) comprising at least one C fatty chain₈-VS₃₀, such as alkyl, arylalkyl, alkylaryl groups or mixtures thereof where linear or branched alkyl groups, preferably linear, in C₈-VS₃₀and in particular mono-or polyester esters of dextrin and at least one fatty acid (such as R-C(O)-OH) and in particular corresponding to the formula(XVIII)following, as well as these optical isomers and its anomers:
(XVIII)
Formula(XVIII)in which :

• n is an integer greater than or equal to 2, preferably ranging from 3 to 200, in particular ranging from 20 to 150, and in particular ranging from 25 to 50,
• R ₁ , R ₂ and R ₃ , identical or different, are chosen from hydrogen or an acyl group (RC(O)-) in which the radical R is a hydrocarbon group, linear or branched, saturated or unsaturated, having 7 to 29, in particular from 7 to 21, in particular from 11 to 19, more particularly from 13 to 17, or even 15, carbon atoms, it being understood that at least one of said radicals R ₁ , R ₂ or R ₃ is different hydrogen;,

preferably dextrin esters are chosen from dextrin palmitates. Composition C1 or C1' according to any one of the preceding claims, in which b) the modified polysaccharide(s) is(are) present in the composition C1 or C'1, in an amount between 0 .05% and 20% by weight, preferably between 0.1% and 15% by weight, more preferably between 0.2% to 12% by weight, better still between 0.5% and 10% by weight and/or
the weight ratio between the total quantity of a) PHA (active material) and the total quantity b) of the modified polysaccharide(s), present in the composition C1 or C1', ranges from present in the composition according to the invention, ranges from preferably from 0.1 to 200, more preferably from 0.2 to 100, and more preferably from 0.5 to 40 such as 4. Composition C1 or C1' according to any one of the preceding claims, which comprises c) one or more fatty substances, preferably liquid at 20°C and at atmospheric pressure, particularly chosen from:
■ hydrocarbons, particularly alkanes, oils of animal origin,
■ oils of vegetable origin,
■ glycerides or fluorinated oils of synthetic origin,
■ fatty alcohols,
■ fatty acid and/or fatty alcohol esters,
■ non-silicone waxes, silicones; And
■ their mixtures;
in particular the hydrocarbon liquid fatty substance(s) are hydrocarbon oils, preferably volatile or are a mixture of different volatile oils, preferably chosen; the volatile oil(s) are chosen from alkanes, linear or branched, in C₈-VS₁₄, more preferably in C₉-VS₁₃Again more preferably in C₉-VS₁₂more particularly chosen from undecane, dodecane, tridecane, and isododecane; or a mixture of different oils, preferably volatile including isododecane in the mixture, or a mixture of undecane and tridecane. Composition C1 or C1' according to any one of the preceding claims, which comprises c) one or more fatty substances, preferably liquid at 20°C and at atmospheric pressure, particularly chosen from:
- vegetable oils formed by esters of fatty acids and polyols, in particular triglycerides, such as sunflower, sesame or rapeseed oil, macadamia oil, soybean oil, sweet almond oil, calophyllum, palm, grape seeds, corn, arara, cotton, apricot, avocado, jojoba, olive or cereal sprouts;
- linear, branched or cyclic esters, having more than 6 carbon atoms, in particular 6 to 30 carbon atoms; and in particular isononyl isononanoate;
and more particularly the esters of formula R^d-C(O)-O-R^ein which R^drepresents the remainder of a higher fatty acid containing 7 to 19 carbon atoms and R^erepresents a hydrocarbon chain comprising 3 to 20 carbon atoms, such as palmitates, adipates, myristates and benzoates, in particular diisopropyl adipate and isopropyl myristate; more preferably the esters of formula R^d-C(O)-O-R^ein which R^drepresents the remainder of a higher fatty acid containing 8 to 10 carbon atoms and R^erepresents a hydrocarbon chain comprising 12 to 18 carbon atoms;
- hydrocarbons and in particular linear, branched and/or cyclic alkanes, volatile or non-volatile, such as C isoparaffins₅-VS₆₀, possibly volatile such as isododecane, Parléam (hydrogenated polyisobutene), isohexadecane, cyclohexane, or 'ISOPARs' and their mixture; or alkanes resulting from the complete hydrogenation/reduction of mixtures of fatty acids from Cocos Nucifera (Coconut) oil such as dodecane; or the mixture of C alkanes₉-VS₁₂, whose chains comprise from 9 to 12 carbon atoms, preferably linear or branched alkanes, in C₉-VS₁₂in particular including dodecane; or paraffin oils, petroleum jelly, or hydrogenated polyisobutylene;
- ethers having 6 to 30 carbon atoms;
- ketones having 6 to 30 carbon atoms;
- aliphatic fatty monoalcohols having 6 to 30 carbon atoms, the hydrocarbon chain not comprising a substitution group, such as oleic alcohol, decanol, dodecanol, octadecanol, octyldodecanol and linoleic alcohol;
- polyols having 6 to 30 carbon atoms, such as hexylene glycol; And
- their mixtures such as mixtures of linear or branched C fatty acid esters₈-VS₁₀and C fatty alcohol₁₂-VS₁₈and alkanes from the complete hydrogenation/reduction of mixtures of fatty acids from Cocos Nucifera (Coconut) oil, in particular dodecane such as mixtures of cococaprylate/caprate and dodecane; or mixtures of C alkanes₉-VS₁₂, whose chains comprise from 9 to 12 carbon atoms, preferably linear or branched alkanes, in C₉-VS₁₂in particular comprising dodecane; preferably the hydrocarbon liquid fatty substance(s) iii) is(are) chosen from C alkanes₆-VS₁₆, linear or branched, preferably in C₈-VS₁₄, more preferably in C₉-VS₁₃Again more preferably in C₉-VS_12,and even more preferably the alkanes are volatile and chosen from undecane, dodecane, isododecane, tridecane, and their mixture comprising in particular dodecane, isododecane or a mixture of undecane and tridecane;
or the liquid fatty substance(s) iii) is(are) a mixture of non-volatile oil(s) and volatile oil(s) in particular comprising isododecane as volatile oil, undecane, dodecane, isododecane, and/or tridecane, more preferably isododecane; as a volatile and non-volatile oil mixture, we can cite the mixture of isododecane and isononyl isononanoate; and more preferably when the fatty substance(s) are a mixture of volatile and non-volatile oil, the quantity of volatile oil is greater than the quantity of non-volatile oil. Composition C1 or C1' according to any one of the preceding claims, comprising d) one or more organic solvent(s) different from c) polar protic or polar aprotic, preferably polar protic, organic solvents, particularly lower monoalcohols having 2 to 10 carbon atoms such as ethanol and isopropanol, preferably ethanol; preferably the quantity of organic solvent(s) is less than 70% by weight, more preferably less than 50% by weight, relative to the total weight of composition C1 or C1'; According to one embodiment of the invention, the composition C1 or C1' comprises a quantity of organic solvent(s) greater than 0.5%, more particularly greater than or equal to 1% by weight relative to the total weight of the composition. Particularly the composition comprises between 2% and 50% by weight of organic solvent(s). Composition according to any one of the preceding claims, which further comprises one or more coloring agents chosen from pigments, direct dyes and mixtures thereof, preferably pigments; more preferably the pigment(s) of the invention are chosen from carbon black, iron oxides in particular black and micas coated with iron oxide, triarylmethane pigments in particular blue and violet such as BLUE 1 LAKE, pigments azo, particularly red ones such as D&C RED 7 alkali metal salt of lithol red such as the calcium salt of lithol red B, even more preferably red iron oxides. Process for treating keratin materials, preferably α) keratin fibers, in particular human fibers such as hair, or β) human skin, in particular of the lips, by application of the composition as defined in any one of the preceding claims. Cosmetic use of the composition according to any one of claims 1 to 22.