COMPOSITION AND DYEING PROCESS OF KERATINOUS FIBERS

Abstract

COMPOSITION AND PROCESS FOR DYEING KERATINOUS FIBERS The present invention relates to a composition comprising: a) at least one protein having a molecular weight of at least 10 kDa; b) at least one film-forming polymer other than a protein; and c) at least one coloring agent selected from pigments, direct dyes, and mixtures thereof. The present invention also relates to a process for dyeing keratinous fibers such as hair, comprising applying said composition to the keratinous fibers such as hair. Figure for abstract: none

Description

Title of the invention: COMPOSITION AND DYEING PROCESS OF KERATINOUS FIBERS technical field

[0001] The present invention relates to a cosmetic composition. In particular, the present invention relates to a composition for dyeing keratinous fibers such as hair. The present invention also relates to a process for dyeing keratinous fibers, such as hair. STATE OF THE ART

[0002] Many people have long sought to change the color of their hair, and in particular to cover up their grey hair.

[0003] In the field of dyeing keratinous fibers, in particular human keratinous fibers, it is already known to color keratinous fibers via various techniques using direct dyes or pigments for non-permanent dyeing, or dye precursors for permanent dyeing.

[0004] There are essentially three types of hair dyeing processes: a. "Permanent" dyeing, the function of which is to allow a substantial modification of the natural color and which uses oxidation dyes that penetrate the hair fibers and form the dye via an oxidative condensation process; b. non-permanent, semi-permanent or direct dyeing, which does not use the oxidative condensation process and resists four or five shampoo washes; it consists of dyeing the hair with dyeing compositions containing direct dyes; c. Temporary dyeing, which results in a change to the natural hair color that remains from one shampoo to the next, and which serves to enhance or correct a shade that has already been achieved. It can also be likened to a "makeup" process.

[0005] The temporary dyeing process involves using pigments. Specifically, the use of pigments on the surface of keratinous fibers generally makes it possible to obtain visible colors on dark hair, because the surface pigment masks the natural color of the fiber.

[0006] However, some temporary hair dye products on the market have the disadvantage of transferring, that is to say, of depositing at least partially, leaving traces, on certain surfaces with which they may come into contact and in particular on clothing or skin.

[0007] Moreover, the colors obtained via this dyeing process have the disadvantage of having poor resistance to water and also to external agents, such as sebum, perspiration, brushing and / or rubbing.

[0008] Thus, there is a need to develop a dye composition for keratinous fibers such as hair with good color transfer resistance properties and which is persistent with respect to water and the various attack factors to which keratinous fibers such as hair may be subjected such as brushing and / or rubbing actions. Summary of the invention

[0009] An objective of the present application is to propose a dye composition for keratinous fibers such as hair with good color transfer resistance properties and which is persistent with respect to water and the various attack factors to which keratinous fibers such as hair may be subjected such as brushing and / or rubbing actions.

[0010] Another objective of the present application is to propose a process for dyeing keratinous fibers, such as hair.

[0011] Thus, the present invention proposes a composition, preferably a dye for keratinous fibers such as hair, comprising: a. at least one protein with a molecular weight of at least 10 kDa; b. at least one film-forming polymer other than a protein; and c. at least one coloring agent selected from pigments, direct dyes and their mixtures.

[0012] It has been observed that the composition according to the present invention forms a colored coating on the hair which is persistent with respect to water and the various attack factors to which the hair may be subjected such as brushing and / or rubbing actions.

[0013] After application of the composition to keratinous fibers, such as hair, the composition exhibits good resistance to transfer and deposition on the supports with which the composition comes into contact, such as skin and / or clothing, is limited.

[0014] Preferably, the composition according to the present invention is a hair dye composition.

[0015] The present invention also relates to a process for dyeing keratinous fibers such as hair comprising the application of the composition as described above to keratinous fibers such as hair.

[0016] Other subjects and features, aspects and advantages of the present invention appear will become even clearer upon reading the detailed description and examples that follow. DETAILED DESCRIPTION OF THE INVENTION

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as that commonly understood by a person skilled in the art in the field covered by the present invention. Where the definition of a term in the present invention conflicts with the meaning commonly understood by a person skilled in the art in the field covered by the present invention, the definition described herein shall apply.

[0018] As used herein, unless otherwise indicated, the limits of a range of values ​​are included in that range, in particular in the expressions "between...and..." and "from...to...".

[0019] Moreover, the expression "at least one" used in this description is equivalent to the expression "one or more".

[0020] Throughout this application, the term "including" shall be interpreted as encompassing all the specifically mentioned features as well as optional, additional, and unspecified features. As used herein, the use of the term "including" also discloses the embodiment in which no features other than the specifically mentioned features are present (i.e., "consisting of").

[0021] Unless otherwise specified, all numerical values ​​expressing a quantity of ingredients and the like used in the description and claims shall be understood as modified by the term "approximately". Consequently, unless otherwise indicated, the numerical values ​​and parameters described herein are approximate values ​​which, where appropriate, may be changed according to the desired purpose.

[0022] As used here, molecular weight indicates the average molecular weight by weight.

[0023] In the present invention, all percentages refer, unless otherwise specified, to a percentage by weight.

[0024] The expression "keratinous fibers" or "keratin fibers" here refers to fibers containing keratin as the main constituent element, and examples of which include hair, eyelashes, eyebrows, and the like.

[0025] For the purposes of the present invention, and unless otherwise indicated: • an “alkyl” radical refers to a linear or branched saturated radical containing, for example, from 1 to 30 carbon atoms; • an “aminoalkyl” radical refers to an alkyl radical as defined above, said alkyl radical comprising an NH2 group; • a “hydroxyalkyl” radical refers to an alkyl radical as defined previously previously, said alkyl radical comprising an OH group; • an “alkylene” radical refers to a divalent linear or branched saturated Cl-ClO hydrocarbon-based group such as methylene, ethylene or propylene; • a “cycloalkyl” or “alicycloalkyl” radical means a monocyclic or polycyclic saturated cyclic hydrocarbon-based group, preferably monocyclic, comprising 1 to 3 rings, preferably 2 rings, and comprising 3 to 40 carbon atoms, in particular comprising 3 to 24 carbon atoms, more particularly 3 to 20 carbon atoms, even more particularly 3 to 12 carbon atoms, preferably between 5 and 10 carbon atoms, such as cyclopropyl, cyclopentyl, cyclohexyl, cycloheptyl or norbornyl, or isobomyl, in particular cyclopropyl, cyclopentyl or cyclohexyl, it being understood that the cycloalkyl radical may be substituted by one or more alkyl groups (in C1-C4) such as methyl; preferably, the cycloalkyl radical is then an isobomyl group; • an “aryl” radical is a cyclic radical based on monocyclic, bicyclic or tricyclic hydrocarbons, fused or unfused, unsaturated and aromatic, comprising from 6 to 30 carbon atoms, preferably from 6 to 14 carbon atoms, more preferably from 6 to 12 carbon atoms; preferably, the aryl group comprises 1 ring of 6 carbon atoms such as phenyl, naphthyl, anthryl, phenanthryl and biphenyl, it being understood that the aryl radical may be substituted by one or more alkyl groups (in C1-C4) such as methyl, preferably tolyl, xylyl or methyl-naphthyl; preferably, the aryl group represents a phenyl; • an “aryloxy” radical refers to an aryl-oxy radical with “aryl” as defined previously; • an “alkoxy” radical refers to an alkyl-oxy radical with “alkyl” as defined previously.

[0026] The composition according to the present invention comprises: a. at least one protein with a molecular weight of at least 10 kDa; b. at least one film-forming polymer other than a protein; and c. at least one coloring agent selected from pigments, direct dyes and their mixtures. Protein

[0027] The composition of the present invention comprises at least one protein with a molecular weight of at least 10 kDa.

[0028] As used here, 1 kDa is equivalent to 1000 g / mol.

[0029] Said protein may be of animal or vegetable origin.

[0030] Said protein may be hydrolyzed or non-hydrolyzed, preferably non-hy- drolysée.

[0031] Preferably, the composition according to the invention comprises at least one non-hydrolyzed protein with a molecular weight of at least 10 kDa.

[0032] The expression "hydrolyzed protein" as used herein refers to the product of the hydrolysis of homogeneous or heterogeneous proteins, or of their respective components, derivatives or combinations thereof.

[0033] The expression "non-hydrolyzed protein" as used herein refers to the protein that is not hydrolyzed.

[0034] Sources of useful proteins for the composition of the present invention include, but are not limited to, plants and their respective components, seeds, animal bones, connective tissue, animal keratin, bovine and porcine collagen, human hair, wool, silk, elastin, reticulin, milk, egg, wheat, corn, soy, oats, casein, albumin or any collagenous or keratinous substance, or their derivatives.

[0035] Preferably, the protein is chosen from silk protein, pea protein, soy protein, wheat protein, maize protein, collagen and mixtures thereof, which are non-hydrolyzed.

[0036] More preferably, the protein is chosen from maize protein, collagen and their mixtures which are non-hydrolyzed, more preferably still from maize protein, in particular zein, which are non-hydrolyzed.

[0037] Preferably, the protein has a molecular weight of at least 15 kDa.

[0038] According to preferred embodiments, the composition of the present invention includes at least one protein selected from maize protein, collagen and their mixtures, the proteins are non-hydrolyzed and have a molecular weight of at least 10 kDa.

[0039] According to even more preferred embodiments, the composition of the present invention comprises at least one protein selected from maize protein, collagen and mixtures thereof, the proteins are non-hydrolyzed and have a molecular weight of at least 15 kDa.

[0040] One example is the product Arorganic-zein sold by the company AROMA HOLLY LIMITED.

[0041] Advantageously, the protein is present in the composition of the present invention in an amount ranging from 0.1% by weight to 20% by weight, preferably from 0.5% by weight to 15% by weight, more preferably from 1% by weight to 10% by weight, more preferably still from 1.5% by weight to 8% by weight relative to the total weight of the composition. Film-forming polymer

[0042] The composition of the present invention comprises at least one film-forming polymer other than a protein.

[0043] Preferably, the film-forming polymer is chosen from among hydrophilic film-forming polymer(s), hydrophobic film-forming polymer(s) and mixtures thereof.

[0044] For the purposes of this invention, the term "polymer" refers to a compound consisting of the repetition of one or more motifs (these motifs being derived from compounds known as monomers). This motif(s) is / are repeated at least twice and, preferably, at least three times.

[0045] The expression "hydrophobic polymer" is intended to designate a polymer having a solubility in water at 25 °C of less than 1% by weight.

[0046] The expression "hydrophilic polymer" is intended to designate a polymer having a solubility in water at 25 °C greater than or equal to 1% by weight.

[0047] The term "film-forming" polymer is intended to designate a polymer which is capable of forming, alone or in the presence of an auxiliary film-forming agent, a macroscopically continuous film on a support, in particular on keratinous materials, and preferably a cohesive film.

[0048] According to a preferred embodiment, the film-forming polymer(s) is / are chosen from among hydrophobic film-forming polymer(s).

[0049] In a particularly preferred embodiment, the hydrophobic film-forming polymer is a polymer selected from the group comprising: • film-forming polymers that are soluble in an organic solvent medium, in particular liposoluble polymers; this means that the polymer is soluble or miscible in the organic medium and forms a single homogeneous phase when incorporated into the medium; • Film-forming polymers that are dispersible in an organic solvent medium, meaning that the polymer forms an insoluble phase in the organic medium, the polymer remaining stable and / or compatible once incorporated into this medium. In particular, these polymers can be in the form of non-aqueous dispersions of polymer particles, preferably dispersions in silicone oils or hydrocarbon-based oils; in one embodiment, the non-aqueous polymer dispersions comprise polymer particles stabilized on their surface with at least one stabilizer; these non-aqueous dispersions are often called "NADs"; • Film-forming polymers in the form of aqueous dispersions of polymer particles, meaning that the polymer forms a phase insoluble in water, the polymer remaining stable and / or compatible once incorporated into water, the polymer particles being able to be stabilized on their surface with at least one stabilizer. These polymer particles are often called latex; In this case, the composition must include an aqueous phase.

[0050] Among the hydrophobic film-forming polymers that can be used in the composition of the present invention, we can mention synthetic polymers, radical type or polycondensate type, polymers of natural origin and their mixtures.

[0051] Hydrophobic film-forming polymers that may be cited in particular include acrylic polymers, polyurethanes, polyesters, polyamides, polyureas, cellulose-based polymers such as nitrocellulose, silicone polymers, acrylamide-type polymers and polyisoprenes.

[0052] Non-ionic, amphoteric, anionic or cationic hydrophobic film-forming polymers may be used.

[0053] The hydrophobic film-forming polymer can be chosen from acrylic polymers.

[0054] The acrylic polymer can be a styrene / acrylate copolymer and in particular a polymer selected from copolymers of at least one styrene monomer, at least one C1-C22 alkyl (meth)acrylate monomer, and optionally one or more (meth)acrylic acid salts.

[0055] Examples of styrene monomers that can be used in the invention include styrene and α-methylstyrene, and in particular styrene.

[0056] The C1-C22 alkyl (meth)acrylate monomer is in particular a C10-C22 alkyl (meth)acrylate and more particularly a C12-C20 alkyl (meth)acrylate. The C1-C22 alkyl (meth)acrylate monomer can be selected from methyl acrylate, methyl methacrylate, ethyl acrylate, propyl acrylate, butyl acrylate, butyl methacrylate, hexyl acrylate, octyl acrylate, 2-ethylhexyl acrylate, lauryl (meth)acrylate, stearyl (meth)acrylate and nonadecanyl (meth)acrylate.

[0057] Examples of (meth)acrylic acid salts include sodium (meth)acrylic acid, potassium (meth)acrylic acid and ammonium (meth)acrylic acid.

[0058] The acrylic polymer used can be in the form of an aqueous dispersion.

[0059] As an acrylic polymer in aqueous dispersion, it can be used according to the invention: • Aqueous dispersions of acrylic polymer sold under the names Acronal DS-6250® by BASF, Neocryl A-45®, Neocryl XK-90®, Neocryl A-1070®, Neocryl A-1090®, Neocryl BT-62®, Neocryl A-1079® and Neocryl A-523® by DSM, Joncryl 95® and Joncryl 821 1® by BASF, Daitosol 5000 AD® (INCI name: Acrylates copolymer) or Daitosol 5000 SJ® (INCI name: Acrylates / ethylhexyl acrylate copolymer) by Daito Kasey Kogyo; Syntran 5760 CG® (INCI name: Styrene / acrylates / ammonium methacrylate copolymer) by the company Interpolymer.

[0060] Preferably, the composition according to the invention comprises an aqueous dispersion of film-forming acrylic polymer.

[0061] The hydrophobic film-forming polymer can also be chosen from homopolymers and copolymers that can be obtained from amides of acidic monomers; examples include (meth)acrylamides, and in particular the N-alkyl(meth)acrylamides, in particular C2-C12 alkyl, such as N-ethylacrylamide, Nt-butylacrylamide or N-octylacrylamide; N-(C1-C4)dialkyl(meth)acrylamides and perfluoroalkyl (meth)acrylates.

[0062] We can also mention copolymers whose CTFA name (4th edition, 1991) is Octylacrylamide / Acrylates / Butylaminoethyl Methacrylate Copolymer, such as the products sold under the name Amphomer® or Lovocryl® 47 by the company National Starch, and also copolymers with the CTFA name Acrylates / Octylacrylamide Copolymer, such as the products sold under the name Dermacryl® LT or Dermacryl® 79 by the company National Starch.

[0063] Copolymers of unsaturated ethylenic acid esters of alkoxylated fatty alcohols can also be used according to the invention. These unsaturated ethylenic acid esters are in particular of acrylic acid, methacrylic acid and itaconic acid, and these alkoxylated fatty alcohols are in particular steareth-20 and ceteth-20.

[0064] Examples include Aculyn®22 (acrylates / steareth-20 methacrylate copolymer), Aculyn®28 (acrylates / beheneth-25 methacrylate copolymer), Structure 2001® (acrylates / steareth-20 itaconate copolymer), Structure 3001® (acrylates / ceteth-20 itaconate copolymer), Structure Plus® (acrylates / amino-acrylates / C10-30 alkyl PEG-20 itaconate copolymer), Carbopol® 1342, 1382, Ultrez 20, Ultrez 21 (C10-30 alkyl acrylate crosslinked polymer), Synthalen W2000® (acrylates / palmeth-25 acrylate copolymer) or Soltex OPT (acrylates / alkyl methacrylate in Cl2-22) sold by Dow Chemical.

[0065] The hydrophobic film-forming polymer can also be selected from homopolymers and copolymers obtained from vinyl monomers. Examples include homopolymers or copolymers of N-vinylpyrrolidone, vinylcaprolactam, vinyl-N-(Cl-C6)alkylpyrroles, vinyloxazoles, vinylthiazoles, vinylpyrimidines, or vinylimidazoles.

[0066] Examples of vinylpyrrolidone copolymers that can be used in the invention include VP / vinyl laurate copolymer, VP / vinyl stearate copolymer, butylated polyvinylpyrrolidone (PVP) copolymer, VP / hexadecene copolymer sold by ISP under the name Ganex V216, VP / eicosene copolymer sold by ISP under the name Ganex V220, VP / triacontene copolymer or VP / acrylic acid / lauryl methacrylate copolymer.

[0067] The hydrophobic film-forming polymer can also be chosen from homopolymers and copolymers that can be obtained from olefins such as ethylene, propylene, butenes, isoprene, butadienes.

[0068] The hydrophobic film-forming polymer can also be chosen from polyurethanes.

[0069] The polyurethanes that can be used in the composition of the present invention are those described in patent applications EP 0 751 162, EP 0 637 600, EP 0 648 485, FR 2 743 297, and EP 0 656 021, WO 94 / 03510, EP 0 619 111 and WO2020074493A1.

[0070] Preferred polyurethanes useful for the composition of the present invention include Polyurethane-1, Polyurethane-6, Polyurethane-32, Polyurethane-34, Polyurethane-35, Polyurethane-48, Polyurethane-93 and Polyurethane-99.

[0071] Examples of commercial polyurethane products include the products sold under the names Luviset PUR® and Luviset® Si PUR by BASF (INCI names Polyurethane-1 and Polyurethane-6 respectively), and BAYCUSAN CQ E 1000 by COVESTRO (INCI name Polyurethane-93). Preferably, the film-forming polymer(s) according to the invention are selected from an acrylic polymer, polyurethane, polyester, polyamide and mixtures thereof.

[0072] More preferably, the hydrophobic film-forming polymer(s) according to the invention are chosen from an acrylic polymer, polyurethane and their mixtures.

[0073] More preferably, the film-forming polymer is chosen from Polyurethane-1, Polyurethane-6, Polyurethane-32, Polyurethane-34, Polyurethane-35, Polyurethane-48, Polyurethane-93, Polyurethane-99, styrene / acrylate copolymers, and their mixtures.

[0074] More preferably, the film-forming polymer is chosen from Polyurethane-93, Polyurethane-99, styrene / acrylates / ammonium methacrylate copolymers and their mixtures.

[0075] Most preferably, the film-forming polymer is chosen from Polyurethane-93, the styrene / acrylates / ammonium methacrylate copolymer, and mixtures thereof.

[0076] Advantageously, the film-forming polymer is present in the composition of the present invention in an amount ranging from 0.1% by weight to 10% by weight, preferably from 0.2% by weight to 5% by weight, more preferably from 0.3% by weight to 3% by weight, relative to the total weight of the composition. Coloring agents

[0077] The composition of the present invention comprises at least one coloring agent selected from pigments, direct dyes and their mixtures. Pigments

[0078] Preferably, the coloring agent is chosen from pigments.

[0079] Preferably, the composition according to the present invention comprises one or more pigments.

[0080] The term "pigment" refers to any pigment that gives color to keratinous materials. Their solubility in water at 25 °C and atmospheric pressure (760 mmHg) is less than 0.05% by weight, and preferably less than 0.01% by weight.

[0081] The pigments that can be used are in particular chosen from among the organic and / or mineral pigments known in art, in particular those described in Kirk-Othmer's Encyclopedia of Chemical Technology and in Ullmann's Encyclopedia of Industrial Chemistry.

[0082] They can be natural, of natural origin or non-natural.

[0083] These pigments can be in powder or pigment paste form. They can be coated or uncoated.

[0084] Pigments can be chosen, for example, from mineral pigments, organic pigments, lacquers, special effect pigments such as mother-of-pearl or glitter flakes, and mixtures thereof.

[0085] The pigment may be a mineral pigment. The term "mineral pigment" refers to any pigment that meets the definition in Ullmann's Encyclopedia in the chapter on inorganic pigments. Examples of inorganic pigments used in the present invention include iron oxides, chromium oxides, manganese violet, ultramarine blue, chromium hydrate, ferric blue, and titanium dioxide.

[0086] The pigment may be an organic pigment. The expression "organic pigment" refers to any pigment that meets the definition in Ullmann's encyclopedia in the chapter on organic pigments.

[0087] The organic pigment may in particular be chosen from the compounds nitroso, nitro, azo, xanthene, pyrene, quinoline, anthraquinone, triphenylmethane, fluorane, phta-locyanine, metal complex, isoindolinone, isoindoline, quinacridone, perinone, perylene, diketopyrrolopyrrole, indigo, thioindigo, dioxazine, triphenylmethane and quinophthalone.

[0088] In particular, the white or colored organic pigments may be selected from carmine, carbon black, aniline black, azo yellow, quinacridone, phthalocyanine blue, the blue pigments coded in the Color Index under references CI 42090, 69800, 69825, 74100, 74160, the yellow pigments coded in the Color Index under references CI 11680, 11710, 19140, 20040, 21100, 21108, 47000, 47005, the green pigments coded in the Color Index under reference CI 61565, 61570, 74260, the orange pigments coded in the Color Index under references CI 11725, 45370, 71105, the red pigments coded in the Color Index under references CI 12085, 12120, 12370, 12420, 12490, 14700, 15525, 15580, 15620, 15630, 15800, 15850, 15865, 15880, 26100, 45380, 45410, 58000, 73360, 73915, 75470, the pigments obtained by oxidative polymerization of indole or phenol derivatives as described in patent FR 2 679,771.

[0089] Examples that can also be cited include pigment pastes of organic pigments, such as the products sold by the Hoechst company under the names:

[0090] - Cosmenyl Yellow 10G: Pigment yellow 3 (CI 11710);

[0091] - Cosmenyl Yellow G: Yellow pigment 1 (CI 11680);

[0092] - Cosmenyl Orange GR: Pigment orange 43 (CI 71105);

[0093] - Cosmenyl Red R: Pigment red 4 (CI 12085);

[0094] - Cosmenyl Carminé FB: Pigment red 5 (CI 12490);

[0095] - Cosmenyl Violet RL: Violet pigment 23 (CI 51319);

[0096] - Cosmenyl Blue A2R: Blue pigment 15.1 (CI 74160);

[0097] - Cosmenyl Green GG: Green pigment 7 (CI 74260);

[0098] - Cosmenyl Black R: Black pigment 7 (CI 77266).

[0099] The pigments according to the invention can also be in the form of composite pigments, as described in patent EP 1 184 426. These composite pigments can be composed in particular of particles including an inorganic core, at least one binder for fixing the organic pigments to the core, and at least one organic pigment which at least partially covers the core.

[0100] The organic pigment can also be a lake. The term "lake" refers to dyes adsorbed onto insoluble particles, the resulting whole remaining insoluble during use.

[0101] The mineral substrates on which the dyes are adsorbed are, for example, alumina, silica, calcium-sodium borosilicate or calcium-aluminum borosilicate and aluminum.

[0102] Among the dyes, we can mention carminic acid. We can also mention the dyes known under the following names: D&C Red 21 (CI 45 380), D&C Orange 5 (CI 45 370), D&C Red 27 (CI 45 410), D&C Orange 10 (CI 45 425), D&C Red 3 (CI 45 430), D&C Red 4 (CI 15 510), D&C Red 33 (CI 17 200), D&C Yellow 5 (CI 19 140), D&C Yellow 6 (CI 15 985), D&C Green 5 (CI 61 570), D&C Yellow 10 (CI 77 002), D&C Green 3 (CI 42 053), D&C Blue 1 (CI 42 090).

[0103] An example of lacquer that can be mentioned is the product known under the following name: D&C Red 7 (CI 15 850:1).

[0104] The pigment can also be a special effects pigment. The expression "Special effect pigments" refers to pigments that generally create a colored appearance (characterized by a certain hue, vibrancy, and luminance level) that is non-uniform and changes depending on viewing conditions (light, temperature, viewing angles, etc.). They are thus distinguished from colored pigments that offer a standard uniform opaque, semi-transparent, or transparent hue.

[0105] There are several types of special effect pigments: those with a low refractive index, such as fluorescent or photochromic pigments, and those with a high refractive index, such as mother-of-pearl, interference pigments or glitter flakes.

[0106] Examples of special effect pigments that may be cited include pearlescent pigments such as titanium-coated mica or bismuth oxychloride, colored pearlescent pigments such as titanium-coated mica and iron oxides, iron oxide-coated mica, titanium-coated mica, particularly ferric blue or chromium oxide, titanium-coated mica and an organic pigment as defined above, and bismuth oxychloride-based pearlescent pigments. Examples of pearlescent pigments that may be cited include Cellini pearlescent pigments sold by BASF (mica-TiO2 lake), Prestige pearlescent pigments sold by Eckart (mica-TiO2), Prestige Bronze pearlescent pigments sold by Eckart (mica-Fe2O3), and Colorona pearlescent pigments sold by Merck (mica-TiO2-Fe2O3).

[0107] We can also mention the golden mother-of-pearl sold in particular by BASF under the names Brilliant gold 212G (Timica), Gold 222C (Cloisonne), Sparkle gold (Timica), Gold 4504 (Chromalite) and Monarch gold 233X (Cloisonne); the bronze mother-of-pearl sold in particular by Merck under the names Bronze fine (17384) (Colorona) and Bronze (17353) (Colorona) and by BASF under the name Super bronze (Cloisonne); the orange mother-of-pearl sold in particular by BASF under the names Orange 363C (Cloisonne) and Orange MCR 101 (Cosmica) and by Merck under the names Passion orange (Colorona) and Matte Orange (17449) (Microna); brown mother-of-pearl sold in particular by BASF under the names Nu-antique copper 340XB (Cloisonne) and Brown CL4509 (Chromalite); mother-of-pearl with a coppery hue sold in particular by BASF under the name Copper 340A (Timica); mother-of-pearl with a red hue sold in particular by Merck under the name Sienna fine (17386) (Colorona);yellow-tinted mother-of-pearl sold notably by BASF under the name Yellow (4502) (Chromalite); red mother-of-pearl with a golden tint sold notably by BASF under the name Sunstone G012 (Gemtone); pink mother-of-pearl sold notably by BASF under the name Tan opale G005 (Gemtone); black mother-of-pearl with a golden tint sold notably by BASF under the name Nu antique bronze 240 AB (Timica); blue mother-of-pearl sold; in particular by the Merck company under the name Matte blue (17433) (Microna), white mother-of-pearl with a silvery tint sold in particular by the Merck company under the name Xirona Silver and green-gold and pink-orange mother-of-pearl sold in particular by the Merck company under the name Indian summer (Xirona), and their mixtures.

[0108] As further examples of pearlescent agents, one can also mention particles including a borosilicate substrate coated with titanium oxide.

[0109] Particles comprising a glass substrate coated with titanium oxide are notably sold under the name Metashine MC1080RY by the company Toyal.

[0110] Finally, examples of mother-of-pearl that can also be cited include polyethylene terephthalate glitter flakes, in particular those sold by Mea-dowbrook Inventions under the name Silver IP 0.004X0.004 (silver glitter flakes). Multilayer pigments based on synthetic substrates, such as alumina, silica, calcium-sodium borosilicate, calcium-aluminum borosilicate, and aluminum, can also be considered.

[0111] Special effect pigments may also be chosen from reflective particles, that is to say, in particular, particles whose size, structure, including the thickness of the layer(s) of which they are composed, as well as their physical and chemical nature and surface condition, enable them to reflect incident light. This reflection may, where appropriate, have sufficient intensity to create, on the surface of the composition or mixture, when applied to the makeup support, highlights visible to the naked eye, that is to say, brighter points that contrast with their surroundings, appearing to sparkle.

[0112] The reflective particles can be chosen so as not to significantly alter the coloring effect generated by the coloring agents with which they are combined, and more particularly so as to optimize this effect in terms of color rendering. They can, more particularly, have a yellow, pink, red, bronze, orange, brown, gold and / or copper color or shade.

[0113] These particles can have various shapes and can in particular be in platelet or globular form, especially in spherical form.

[0114] Reflective particles, whatever their shape, may or may not have a multilayer structure and, in the case of a multilayer structure, may have, for example, at least one layer of uniform thickness, in particular of a reflective material.

[0115] When the reflective particles do not have a multilayer structure, they can be composed, for example, of metal oxides, in particular titanium or iron oxides obtained synthetically.

[0116] When reflective particles have a multilayer structure, they may include, for example, a natural or synthetic substrate, in particular a synthetic substrate The surface must be at least partially coated with at least one layer of a reflective material, including at least one metallic or metallized material. The substrate may consist of one or more organic and / or inorganic materials.

[0117] More particularly, it may be selected from glasses, ceramics, graphite, metal oxides, aluminas, silicas, silicates, in particular aluminosilicates and borosilicates, and synthetic mica, and mixtures thereof, this list not being exhaustive.

[0118] The reflective material may include a layer of metal or a metallic material.

[0119] Reflective particles are described in particular in documents JP-A-09188830, JP-A-10158450, JP-A-10158541, JP-A-07258460 and JP-A-05017710.

[0120] As further examples of reflective particles including a mineral substrate coated with a layer of metal, one can also mention particles including a borosilicate substrate coated with silver.

[0121] Silver-coated glass substrate particles, in wafer form, are sold under the name Microglass Metashine REFSX 2025 PS by Toyal. Nickel / chromium / molybdenum alloy coated glass substrate particles are sold under the names Crystal Star GF 550 and GF 2525 by the same company.

[0122] Particles comprising a metallic substrate such as silver, aluminum, iron, chromium, nickel, molybdenum, gold, copper, zinc, tin, magnesium, steel, bronze or titanium may also be used, said substrate being coated with at least one layer of at least one metallic oxide such as titanium oxide, aluminum oxide, iron oxide, cerium oxide, chromium oxide, silicon oxides, and mixtures thereof.

[0123] Examples that can be cited include aluminium powder, bronze powder or SiO2 coated copper powder sold under the name Visionaire by the Eckart company.

[0124] Other examples include interference effect pigments that are not fixed to a substrate, such as liquid crystals (Wacker's Helicones HC) and holographic interference glitter flakes (Spectratek's Geometry Pigments or Spectra f / x). Special effect pigments also include fluorescent pigments, whether substances that fluoresce in daylight or produce ultraviolet fluorescence, phosphorescent pigments, photochromic pigments, thermochromic pigments, and quantum dots, sold, for example, by Quantum Dots Corporation.

[0125] The variety of pigments that can be used in the present invention makes it possible to obtain a wide range of colors, as well as particular optical effects such as metallic effects or interference effects.

[0126] The size of the pigment used in the composition according to the present invention is generally between 10 nm and 200 pm, preferably between 20 nm and 80 pm and more preferably between 30 nm and 50 pm.

[0127] The pigments can be dispersed in the composition by means of a dispersant.

[0128] The dispersant serves to protect the dispersed particles from agglomeration or flocculation. This dispersant may be a surfactant, an oligomer, a polymer, or a mixture of several of these, possessing one or more functionalities with a strong affinity for the surface of the particles to be dispersed. In particular, they may bind physically or chemically to the surface of the pigments. These dispersants also contain at least one functional group that is compatible with the continuous medium or soluble in it.In particular, esters of 12-hydroxystearic acid and especially of C8 to C20 fatty acids and polyols such as glycerol or diglycerol are used, such as poly(12-hydroxystearic acid) stearate with a molecular weight of about 750 g / mol, such as the product sold under the name Solsperse 21 000 by Avecia, polyglyceryl-2 dipolyhydroxystearate (name CTFA) sold under the reference Dehymyls PGPH by Henkel, or polyhydroxystearic acid such as the product sold under the reference Arlacel P100 by Uniqema, and mixtures thereof.

[0129] Other dispersants that can be used in the compositions of the invention include quaternary ammonium derivatives of poly-condensed fatty acids, for example Solsperse 17 000 sold by Avecia, and polydimethylsiloxane / oxypropylene mixtures such as those sold by Dow Corning under the references DC2-5185 and DC2-5225 C.

[0130] The pigments used in the composition can be surface treated with an organic agent.

[0131] Thus, the previously surface-treated pigments that are useful in the context of the invention are pigments that have been wholly or partially subjected to a surface treatment of a chemical, electronic, electrochemical, mechano-chemical or mechanical nature with an organic agent, such as those described in particular in Cosmetics and Toiletries, February 1990, Vol. 105, pages 53 to 64, before being dispersed in the composition according to the invention.These organic agents can be chosen, for example, from waxes, for example camauba wax and beeswax; fatty acids, fatty alcohols and their derivatives, such as stearic acid, hydroxystearic acid, stearyl alcohol, hydroxystearyl alcohol and lauric acid and their derivatives; anionic surfactants; lecithins; sodium, potassium, magnesium, iron, titanium, zinc or aluminium salts of fatty acids, for example aluminium stearate or laurate; metal alkoxides; polyethylene; (meth)acrylic polymers, for example polymers. methyl thacrylates; polymers and copolymers containing acrylate motifs; alkanolamines; silicone compounds, for example silicones, in particular polydimethylsiloxanes; organofluorine compounds, for example perfluoroalkyl ethers; fluorosilicone compounds.

[0132] Surface-treated pigments that are useful in the composition may also have been treated with a mixture of these compounds and / or may have undergone several surface treatments.

[0133] Surface-treated pigments that are useful in the context of the present invention can be prepared using surface treatment techniques well known to those skilled in the art, or can be commercially available as is.

[0134] Preferably, the surface-treated pigments are coated with an organic layer.

[0135] The organic agent with which the pigments are treated can be deposited on the pigments by solvent evaporation, chemical reaction between the molecules of the surfactant or creation of a covalent bond between the surfactant and the pigments.

[0136] Surface treatment can thus be carried out, for example, by chemical reaction of a surfactant with the surface of the pigments and creation of a covalent bond between the surfactant and the pigments or fillers. This process is described in particular in US patent 4,578,266.

[0137] An organic agent covalently linked to the pigments will preferably be used.

[0138] The surface treatment agent can represent from 0.1% by weight to 50% by weight relative to the total weight of the pigment treated on the surface, preferably from 0.5% by weight to 30% by weight and even more preferably from 1% by weight to 20% by weight relative to the total weight of the pigment treated on the surface.

[0139] Preferably, the surface treatments of the pigments are chosen from the following treatments: • a PEG-silicone treatment, for example the AQ surface treatment sold by LCW; • a methicone treatment, for example the SI surface treatment sold by LCW; • a dimethicone treatment, for example the Covasil 3.05 surface treatment sold by LCW; • a dimethicone / trimethyl siloxysilicate treatment, for example the Covasil 4.05 surface treatment sold by LCW; • a magnesium myristate treatment, for example the MM surface treatment sold by LCW; • aluminum dimyristate treatment, such as the MI surface treatment sold by Miyoshi; • a treatment with perfluoropolymethyl isopropyl ether, for example the FHC surface treatment sold by LCW; • a treatment with isostearyl sebacate, for example the HS surface treatment sold by Miyoshi; • a perfluoroalkyl phosphate treatment, for example the PF surface treatment sold by Daito; • a treatment with acrylate / dimethicone copolymer and perfluoroalkyl phosphate, for example the FSA surface treatment sold by Daito; • a treatment with polymethylhydrogenosiloxane / perfluoroalkyl phosphate, for example the FS01 surface treatment sold by Daito; • an acrylate / dimethicone copolymer treatment, for example the ASC surface treatment sold by Daito; • a treatment with isopropyl titanium triisostearate, for example the ITT surface treatment sold by Daito; • an acrylate copolymer treatment, for example the APD surface treatment sold by Daito; • a treatment with perfluoroalkyl phosphate / isopropyl titanium triisostearate, for example the PF + ITT surface treatment sold by Daito.

[0140] According to a particular embodiment of the invention, the dispersant is present with organic or mineral pigments in the form of submicron-sized particles.

[0141] The term "submicron" or "submicron" refers to pigments having a particle size that has been micronized by a micronization process and having an average particle size of less than one micrometer (pm), in particular between 0.1 and 0.9 pm, and preferably between 0.2 and 0.6 pm.

[0142] According to one embodiment, the dispersant and the pigment(s) are present in a quantity (dispersant:pigment), according to a weight ratio, between 1:4 and 4:1, in particular between 1.5:3.5 and 3.5:1 or better still between 1.75:3 and 3:1.

[0143] The dispersant(s) may therefore have a silicone skeleton, such as silicone polyether and amino silicone dispersants. Suitable dispersants that can be cited include: • Aminosilicones, i.e. silicones comprising one or more amino groups such as those sold under the names and references: BYK LPX 21879 by BYK, GP-4, GP-6, GP-344, GP-851, GP-965, GP-967 and GP-988-1, sold by Genesee Polymers, • silicone acrylates such as Tego® RC 902, Tego® RC 922, Tego® RC 1041, and Tego® RC 1043, sold by Evonik, • polydimethylsiloxane (PDMS) silicones bearing carboxyl groups such such as X-22162 and X-22370 by Shin-Etsu, epoxy silicones such as GP-29, GP-32, GP-502, GP-504, GP-514, GP-607, GP-682 and GP-695 by Genesee Polymers, or Tego® RC 1401, Tego® RC 1403, Tego® RC 1412 by Evonik.

[0144] According to a particular embodiment, the dispersant(s) is / are of the amino silicone type and is / are cationic.

[0145] Preferably, the pigment(s) is / are chosen from mineral, mixed mineral-organic or organic pigments.

[0146] In one embodiment of the invention, the pigments are organic pigments, preferably organic pigments treated on the surface with an organic agent chosen from silicone compounds.

[0147] In another embodiment of the invention, the pigments are mineral pigments. Direct dyes

[0148] The composition according to the invention may comprise one or more direct dyes.

[0149] The term "direct dye" refers to natural and / or synthetic dyes, other than oxidation dyes. These are dyes that spread superficially on the fiber.

[0150] They can be ionic or non-ionic, preferably cationic or non-ionic.

[0151] Examples of suitable direct dyes that may be cited include azo direct dyes; (poly)methine dyes such as cyanines, hemicyanines and styryls; carbonyl dyes; azine dyes; nitro(hetero)aryl dyes; tri(hetero)arylmethane dyes; porphyrin dyes; phthalocyanine dyes and natural direct dyes, alone or in mixtures.

[0152] Among the natural direct dyes that can be used according to the invention are lawsone, juglone, alizarin, purpurin, carminic acid, kermesic acid, purpurogallin, protocatechaldehyde, indigo, isatin, curcumin, spinulosin, apigenidine, and orceins. Extracts or decoctions containing these natural dyes, and in particular henna-based poultices or extracts, can also be used.

[0153] The colouring agent(s) may be present in a total content ranging from 0.001% to 20% by weight and preferably from 0.005% to 15% by weight relative to the total weight of the composition according to the invention.

[0154] The pigment(s) may be present in a total content ranging from 0.05% by weight to 20% by weight, preferably from 0.1% by weight to 15% by weight and even better from 0.5% by weight to 10% by weight, relative to the total weight of the composition according to the invention.

[0155] The direct dye(s) may be present in a total content ranging from

[0156]

[0157] 0.001% by weight to 10% by weight relative to the total weight of the composition, preferably from 0.005% by weight to 5% by weight relative to the total weight of the composition according to the invention. Alkoxysilanes The composition of the present invention may include at least one alkoxysilane. According to a preferred embodiment, the composition comprises at least one alkoxysilane selected from the compounds of formula (I) or formula (I1) below, their oligomers and / or mixtures thereof: (D

[0158] in which: Ra represents an alkyl group containing from 1 to 20 carbon atoms, preferably from 1 to 10 carbon atoms, more preferably from 1 to 4 carbon atoms and in particular from 1 to 2 carbon atoms such as a methyl, said alkyl group being optionally substituted by an aryl group; an alkoxy group containing from 1 to 10 carbon atoms, preferably from 1 to 4 carbon atoms and in particular from 1 to 2 carbon atoms such as an ethoxy; or an aryl group containing from 6 to 12 carbon atoms; Rb and Rc, which may be identical or different, represent a hydrogen atom; an alkyl group containing from 1 to 20 carbon atoms, preferably from 1 to 6 carbon atoms and in particular from 1 to 4 carbon atoms, in particular an ethyl group, it being understood that if Ra does not represent an alkoxy group, then Rb and Rc cannot simultaneously represent a hydrogen atom; Rd and Re, which may be identical or different, represent a hydrogen atom; an alkyl group containing 1 to 20 carbon atoms, preferably 1 to 6 carbon atoms and particularly 1 to 4 carbon atoms; a cycloalkyl group containing 3 to 20 carbon atoms; a an aryl group containing 6 to 12 carbon atoms; an aminoalkyl group containing 1 to 20 carbon atoms; • A independently represents a linear or branched alkylene group containing from 1 to 10 carbon atoms, which may be interrupted by at least one heteroatom chosen from O, S, NH or a carbonyl group (CO), preferably NH; • Q represents a carbonyl group (CO); • r denotes an integer ranging from 0 to 1.

[0159] Among the alkoxysilanes of formula (I), their oligomers and / or mixtures, particular examples include 3-aminopropyltriethoxysilane (APTES), 3-aminopropylmethyldiethoxysilane (APMDES), 3-ureidopropyltrimethoxysilane and N-cyclohexylaminomethyltriethoxysilane.

[0160] APTES can be purchased for example from Dow Corning under the name Xiameter OFS-6011 Silane or from Momentive Performance Materials under the name Silsoft Al 100 or from Shin-Etsu under the name KBE-903.

[0161] The compounds of formula (I) may also refer to Dynasylan SIVO 210 or Dynasylan 1505 sold by the company Evonik.

[0162] 3-Ureidopropyltrimethoxysilane can be purchased, for example, from the Gelest company under reference SIU9058.0.

[0163] N-Cyclohexylaminomethyltriethoxysilane can be purchased, for example, from the Wacker company under the name Geniosil XL 926.

[0164] Among the alkoxysilanes of formula (!'), their oligomers and / or mixtures thereof, particular examples include N,N-bis[3-(trimethoxysilyl)propyl]ethylenediamine (CAS identification number: 74956-86-8), Nl,Nl-bis[3-(triethoxysilyl)propyl]-l,2-ethanediamine (CAS identification number: 457065-96-2), 1,2-ethanediamine, Nl-[3-(triethoxysilyl)propyl]-Nl-[3-(trimethoxysilyl)propyl]- (CAS identification number: 1638528-78-5), and mixtures thereof.

[0165] Preferably, the alkoxysilane(s), their oligomers and / or mixtures thereof are selected from the compounds of formula (I) below:

[0166] in which: • Ra represents an alkyl group containing 1 to 10 carbon atoms, in particular of 1 to 4 carbon atoms and in particular of 1 to 2 carbon atoms, preferably a methyl, or an alkoxy group containing 1 to 4 carbon atoms, preferably 1 to 2 carbon atoms, preferably an ethoxy; • Rb and Rc, which may be identical or different, represent an alkyl group containing 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, such as an ethyl; • Rd and Re, which are identical, represent a hydrogen atom or Rd designates a hydrogen atom and Re designates a C5-C6 cycloalkyl radical such as cyclohexyl; • A independently represents a linear or branched alkylene group containing from 1 to 10 carbon atoms, which may be interrupted by at least one heteroatom chosen from O, S and NH or a carbonyl group (CO), preferably NH; • r denotes an integer equal to 0.

[0167] Preferably, the alkoxysilane or alkoxysilanes, their oligomers and / or mixtures are chosen from compounds of formula (I) in which Ra represents an ethoxy group, Rb and Rc are identical and represent an ethyl, Rd and Re represent a hydrogen atom, A represents a propylene and r denotes an integer equal to 0.

[0168] According to a preferred embodiment, alkoxysilane of formula (I), its oligomers and / or mixtures thereof, is 3-aminopropyltriethoxysilane (APTES).

[0169] Alkoxysilane or alkoxysilanes of formula (I) or formula (F), their oligomers and / or mixtures thereof may be present in a total amount from 0.1% by weight to 30% by weight, preferably from 0.3% by weight to 20% by weight, preferably from 0.5% by weight to 15% by weight, better still from 0.8% by weight to 10% by weight and even better from 0.8% by weight to 5% by weight, relative to the total weight of the composition.

[0170] According to another preferred embodiment, the composition according to the invention comprises at least one alkoxysilane of formula (II) below, its oligomers and / or mixtures thereof:

[0171] in which: • Ra represents an alkyl group containing from 1 to 20 carbon atoms, preferably from 1 to 10 carbon atoms, more preferably from 1 to 4 carbon atoms and in particular from 1 to 2 carbon atoms such as a methyl, said alkyl group being optionally substituted by an aryl group; an alkoxy group containing from 1 to 10 carbon atoms, preferably from 1 to 4 carbon atoms and in particular from 1 to 2 carbon atoms such as an ethoxy; or an aryl group containing from 6 to 12 carbon atoms; • Rb represents a hydrogen atom or an alkyl group containing from 1 to 20 carbon atoms, preferably from 1 to 6 carbon atoms and in particular from 1 to 4 carbon atoms, in particular an ethyl group; • Rc represents an alkyl group containing from 1 to 20 carbon atoms, preferably from 1 to 10 carbon atoms, more preferably from 1 to 4 carbon atoms and in particular from 1 to 2 carbon atoms such as a methyl, said alkyl group being optionally substituted by an aryl group; an alkoxy group containing from 1 to 10 carbon atoms, preferably from 1 to 4 carbon atoms and in particular from 1 to 2 carbon atoms such as an ethoxy; or an aryl group containing from 6 to 12 carbon atoms;

[0172] it being understood that if Ra and Rc do not represent an alkoxy group, then Rb cannot represent a hydrogen atom; • k denotes an integer ranging from 0 to 5, preferably ranging from 0 to 3; • Rf represents a hydrogen atom; an alkyl group containing from 1 to 10 carbon atoms, and in particular from 1 to 4 carbon atoms; or a group of formula (lia) below:

[0173] « ° (Ha)

[0174] in which Rn represents a hydroxyl group (OH); an alkyl group containing 1 to 10 carbon atoms, preferably a methyl.

[0175] Among the alkoxysilanes of formula (II), their oligomers and / or mixtures thereof, particular examples include tetraethoxysilane (TEOS), methyltrimethoxysilane (MTMS), methyltriethoxysilane (MTES), dimethyltriethoxysilane (DMDES), diethyltriethoxysilane, dipropyltriethoxysilane, propyltriethoxysilane, risobutyltriethoxysilane, phenyltriethoxysilane, phenylmethyltriethoxysilane, diphenyltriethoxysilane, benzyltriethoxysilane, benzylmethyltriethoxysilane, di-benzyltriethoxysilane, acetoxymethyltriethoxysilane and mixtures thereof.

[0176] TEOS can for example be purchased from the company Evonik under the name Dynasylan® A or Dynasylan® A SQ.

[0177] MTES can be purchased for example from the company Evonik under the name Dynasylan® MTES.

[0178] DMDES can be purchased, for example, from the company Gelest under the reference SID3404.0.

[0179] Preferably, the alkoxysilane or alkoxysilanes of formula (II), their oligomers and / or mixtures thereof are such that: • Ra represents an alkoxy group containing from 1 to 10 carbon atoms, preferably from 1 to 4 carbon atoms and in particular from 1 to 2 carbon atoms such as a methoxy or an ethoxy; or an alkyl group containing from 1 to 10 carbon atoms optionally substituted by an aryl group, preferably from 1 to 2 carbon atoms optionally substituted by an aryl group; • Rb represents an alkyl group containing 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, in particular 1 to 2 carbon atoms, such as a methyl or an ethyl; • Rc represents an alkoxy group containing from 1 to 10 carbon atoms, preferably from 1 to 4 carbon atoms and in particular from 1 to 2 carbon atoms, such as a methoxy or an ethoxy; • k denotes an integer from 0 to 3, preferably equal to 0; • Rf represents a hydrogen atom or an alkyl group containing from 1 to 10 carbon atoms and in particular 1 to 4 carbon atoms, such as a methyl or an ethyl.

[0180] More preferably, the alkoxysilane(s) of formula (II), their oligomers and / or mixtures thereof are such that: • Ra represents an alkyl group containing 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, in particular 1 to 2 carbon atoms, such as a methyl or an ethyl; • Rb represents an alkyl group containing 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, in particular 1 to 2 carbon atoms, such as a methyl or an ethyl; • Rc represents an alkoxy group containing from 1 to 10 carbon atoms, preferably from 1 to 4 carbon atoms and in particular from 1 to 2 carbon atoms, such as a methoxy or an ethoxy; • k denotes an integer equal to 0; • R represents an alkyl group containing from 1 to 10 carbon atoms, and in particular from 1 to 4 carbon atoms, such as a methyl or ethyl group.

[0181] According to a preferred embodiment, the alkoxysilane of formula (II), its oligomers and / or mixtures thereof, is methyltrimethoxysilane (MTMS) or methyltriethoxysilane (MTES).

[0182] Alkoxysilane or alkoxysilanes of formula (II), their oligomers and / or mixtures thereof may be present in a total amount from 0.1% by weight to 30% by weight, preferably from 0.3% by weight to 20% by weight, preferably from 0.5% by weight to 15% by weight, better still from 0.8% by weight to 10% by weight and even better from 0.8% by weight to 5% by weight, relative to the total weight of the composition.

[0183] Preferably, the composition according to the invention comprises at least one alkoxysilane of formula (I), its oligomers and / or mixtures thereof, more preferably 3-aminopropyItriethoxysilane (APTES).

[0184] According to a preferred embodiment, alkoxysilane or alkoxysilanes is / are present in a total amount ranging from 0.1% by weight to 30% by weight, preferably from 0.3% by weight to 20% by weight, preferably from 0.5% by weight to 15% by weight, better still from 0.8% by weight to 10% by weight and even better from 0.8% by weight to 5% by weight, relative to the total weight of the composition.

[0185] According to a preferred embodiment, alkoxysilane or alkoxysilanes of formula (I), their oligomers and / or mixtures thereof are present in a total amount ranging from 0.1% by weight to 30% by weight, preferably from 0.3% by weight to 20% by weight, preferably from 0.5% by weight to 15% by weight, better still from 0.8% by weight to 10% by weight and even better from 0.8% by weight to 5% by weight, relative to the total weight of the composition. Organic solvents

[0186] The composition of the present invention may include at least one organic solvent.

[0187] Preferably, the organic solvent is chosen from C2-C8 monoalcohols, C2-C8 glycols, C2-C8 fatty acids and mixtures thereof.

[0188] As used here, C2-C8 monoalcohols can be saturated or unsaturated, and linear or branched.

[0189] Preferably, the organic solvent is chosen from a saturated, linear or branched C2-C6 monoalcohol, for example, ethanol, propanol, butanol, isopropanol, isobutanol.

[0190] As used here, C2-C8 glycols can be saturated or unsaturated, and linear or branched.

[0191] Preferably, the organic solvent is chosen from among the saturated C2-C6 glycols, linear or branched, for example, ethylene glycol, propylene glycol, butylene glycol, isoprene glycol, hexylene glycol, caprylyl glycol.

[0192] As used here, C2-C8 fatty acids can be saturated or unsaturated, and linear or branched; optionally, a hydrogen atom bonded to a carbon atom is substituted by a hydroxyl group. Examples of C2-C8 fatty acids include: Examples include acetic acid, lactic acid, citric acid, butyric acid, valeric acid, pentanoic acid, caproic acid, heptyl acid, and caprylic acid.

[0193] More preferably, the organic solvent is chosen from ethanol, propylene glycol, acetic acid, lactic acid and mixtures thereof.

[0194] Even more preferably, the organic solvent is chosen from ethanol, propylene glycol and mixtures thereof.

[0195] Advantageously, the organic solvent is present in the composition of the present invention in an amount ranging from 5% by weight to 90% by weight, preferably from 10% by weight to 85% by weight, more preferably from 20% by weight to 80% by weight, relative to the total weight of the composition.

[0196] In some preferred embodiments, the organic solvent is chosen from C2-C8 monoalcohols, in particular ethanol, present in the composition of the present invention in an amount ranging from 10% by weight to 85% by weight, preferably from 15% by weight to 80% by weight, more preferably from 15% by weight to 70% by weight, relative to the total weight of the composition.

[0197] In some preferred embodiments, the organic solvent is chosen from C2-C8 glycols, in particular propylene glycol, present in the composition of the present invention in an amount from 10% by weight to 85% by weight, preferably from 15% by weight to 80% by weight, more preferably from 20% by weight to 70% by weight, relative to the total weight of the composition. Water

[0198] Preferably, the composition of the present invention further comprises water.

[0199] Advantageously, water is present in the composition of the present invention in an amount ranging from 5% by weight to 80% by weight, preferably from 10% by weight to 70% by weight, more preferably from 15% by weight to 60% by weight, relative to the total weight of the composition. Adjuvants

[0200] The composition according to the present invention may also include one or more cosmetic adjuvants.

[0201] For example, the composition may include one or more additives that are well known in the art, such as antioxidants, pH correctors and preservatives.

[0202] A person skilled in the art may choose these optional additional compounds and their quantities in such a way that the advantageous properties intrinsically associated with the invention are not, or substantially not, negatively affected by the envisaged addition(s).

[0203] According to a preferred embodiment, the composition according to the present invention comprises, relative to the total weight of the composition, a. from 0.1% by weight to 20% by weight of at least one protein selected from silk protein, pea protein, soy protein, wheat protein, maize protein and mixtures thereof, wherein the proteins are non-hydrolyzed and have a molecular weight of at least 10 kDa; b. from 0.1% by weight to 10% by weight of at least one film-forming polymer selected from Polyurethane-93, Polyurethane-99, styrene / acrylate copolymers and their mixtures; and c. from 0.05% by weight to 20% by weight of at least one pigment.

[0204] According to a preferred embodiment, the composition according to the present invention comprises, relative to the total weight of the composition, a. from 1.5% by weight to 8% by weight of at least one maize protein, wherein the protein is non-hydrolyzed and has a molecular weight of at least 15 kDa; b. from 0.3% by weight to 3% by weight of at least one film-forming polymer selected from Polyurethane-93, styrene / acrylates / ammonium methacrylate copolymers and mixtures thereof; and c. from 0.5% by weight to 10% by weight of at least one pigment chosen from mineral, mixed mineral-organic or organic pigments. Preparation and Use

[0205] The composition according to the present invention can be prepared by conventional processes in the cosmetic field and can be used for dyeing hair.

[0206] The present invention relates to a process for dyeing keratinous fibers such as hair comprising the application of the composition as described above to keratinous fibers such as hair.

[0207] The process can be repeated several times to obtain the desired colouring. EXAMPLES

[0208] The following examples are given by way of illustration of the present invention and shall not be construed as limiting the scope.

[0209] The main raw materials used, their trade names and their suppliers have been listed in Table 1.

[0210] [Tables 1] INCI Name Trade Name Supplier Zein (molecular weight of at least 10 kDa) Arorganic-zein AROMA HOLLY LIMITED RED 30 COVASOP RED W 3773 SENSIENT Polyurethane-93 (containing 30% active ingredient) BAYCUSAN CQ E 1000 COVESTRO Styrene / acrylates / ammonium methacrylate copolymer (and) sodium laureth sulfate (and) caprylyl glycol Syntran 5760 CG® INTERPOLYMER Hydroxypropyltrimonium hydrolyzed wheat protein (molecular weight strictly less than 10 kDa) GLUADIN WQT P BASF

[0211] Inventive Examples 1 and 2 and Comparative Examples 1 to 4

[0212] The compositions according to Inventive Examples (EI) 1 and 2 and Comparative Examples (CE) 1 to 4 were prepared with the components listed in Table 2 (the contents were expressed as percentages by weight of ingredients relative to the total weight of each composition, unless otherwise indicated - MA: Active Ingredient):

[0213] [Tables2] Components El. 1 EL 2 EC. 1 EC. 2 CE. 3 EC. 4 Zein 3.6 3.6 3.6 - - - Red 30 2.4 MA 2.4 MA 2.4 MA 2.4 MA 2.4 MA 2.4 MA Propylene glycol QS100 QS100 QS100 QS100 QS100 QS100 Ethanol 20 20 20 20 20 20 Water 26 26 26 26 26 26 Polyurethane-93 1.5 - - 1.5 - 1.5 Styrene / acrylates / ammonium methacrylate copolymer (and) sodium laureth sulfate (and) caprylyl glycol - 1.5 - - 1.5 - Hydroxypropyltrimonium hydrolyzed wheat protein (4 kDa) - - - - - 3.6

[0214] The compositions of Inventive Examples 1 and 2 are compositions according to the present invention.

[0215] The composition of Comparative Example 1 does not include at least one film-forming polymer other than a protein.

[0216] The compositions of Comparative Examples 2 to 4 do not include at least one protein with a molecular weight of at least 10 kDa.

[0217] Preparation procedure:

[0218] The compositions listed above were prepared as follows: 1. Mixing organic solvents and water with stirring for 5 minutes to obtain a solvent mixture; 2. Preheating the solvent mixture in a water bath at 50 °C for 5 minutes; 3. Adding protein (if applicable) to the solvent mixture with stirring for 10 minutes to obtain a homogeneous system; 4. Addition of film-forming polymer (if applicable) to the homogeneous system with stirring for 5 minutes; 5. Cool to room temperature, then add coloring agent to the system and stir for 10 minutes to obtain a composition homogeneous. Assessment

[0219] The color transfer resistance and water resistance properties of the compositions of Inventive Examples 1 and 2 and Comparative Examples 1 to 4 were evaluated. color transfer resistance property

[0220] 1.5 g of the test sample was applied to a 3 g strand of hair natural (level 3), then the strand was blow-dried. Next, the hair was wiped with a cloth, and the color stain on the cloth was scored according to the following standard by 6 professional hairdressers, then the scores were averaged:

[0221] 1: almost total color transfer onto the cloth;

[0222] 2: large colour stain on the cloth;

[0223] 3: color stain present on the cloth, but the color level is acceptable;

[0224] 4: a small color stain on the cloth but not obvious;

[0225] 5: no color stain on the cloth. Water resistance

[0226] 1.5 g of the test sample was applied to a 3 g strand of black hair natural, then the strand was blow-dried. Next, 0.5 g of water was sprayed onto the strand of hair, then the hair was wiped with a cloth, and the color stain on the cloth was scored according to the following standard by 6 professional hairdressers, then the scores were averaged:

[0227] 1: almost total color transfer onto the cloth;

[0228] 2: large colour stain on the cloth;

[0229] 3: color stain present on the cloth, but the color level is acceptable;

[0230] 4: a small color stain on the cloth but not obvious;

[0231] 5: no color stain on the cloth.

[0232] The property scores for color transfer resistance and water resistance of the compositions of Inventive Examples 1 and 2 and Comparative Examples 1 to 4 have been summarized in Table 3.

[0233] [Tables3] Properties El. 1 EI.2 EC. 1 EC. 2 EC. 3 EC. 4 Color transfer resistance 4.3 3.7 3.3 1.5 2 1.5 Water resistance 4.3 3.7 2.3 1 1.3 1.3

[0234] It can be seen from Table 3 that the composition according to the present invention forms a colored coating on the hair that is persistent against water and various attack factors to which the hair may be subjected such as brushing and / or rubbing.

[0235] Moreover, after application of the composition to the hair, the composition exhibits good resistance to color transfer.

Claims

Demands

1. Composition, preferably for dyeing keratinous fibers such as hair, comprising: a) at least one protein with a molecular weight of at least 10 kDa; b) at least one film-forming polymer other than a protein; and c) at least one coloring agent selected from pigments, direct dyes and mixtures thereof.

2. Composition according to claim 1, wherein the protein is selected from silk protein, pea protein, soy protein, wheat protein, maize protein, collagen and mixtures thereof, which are non-hydrolyzed.

3. Composition according to any one of claims 1 to 2, wherein the protein is present in an amount from 0.1% by weight to 20% by weight, preferably from 0.5% by weight to 15% by weight, more preferably from 1% by weight to 10% by weight, more preferably still from 1.5% by weight to 8% by weight, relative to the total weight of the composition.

4. Composition according to any one of claims 1 to 3, wherein the film-forming polymer is selected from hydrophobic film-forming polymer(s), preferably selected from an acrylic polymer, a polyurethane, and mixtures thereof.

5. Composition according to any one of claims 1 to 4, wherein the film-forming polymer is selected from Polyurethane-1, Polyurethane-6, Polyurethane-32, Polyurethane-34, Polyurethane-35, Polyurethane-48, Polyurethane-93, Polyurethane-99, styrene / acrylate copolymers, and mixtures thereof, preferably selected from Polyurethane-93, Polyurethane-99, styrene / acrylate / ammonium methacrylate copolymers, and mixtures thereof, more preferably selected from Polyurethane-93, styrene / acrylate / ammonium methacrylate copolymers and mixtures thereof.

6. Composition according to any one of claims 1 to 5, wherein the composition comprises one or more pigments selected from mineral, mixed mineral-organic or organic pigments.

7. A composition according to any one of claims 1 to 6, further comprising at least one organic solvent, preferably selected from C2-C8 monoalcohols, C2-C8 glycols, acids

8.

9.

10. C2-C8 fats, and mixtures thereof, more preferably chosen from ethanol, propylene glycol, acetic acid, lactic acid, and mixtures thereof. Composition according to any one of claims 1 to 7, further comprising water. Composition according to claim 1, comprising, relative to the total weight of the composition, a) from 0.1% by weight to 20% by weight of at least one protein selected from silk protein, pea protein, soy protein, wheat protein, maize protein, and mixtures thereof, wherein the proteins are non-hydrolyzed and have a molecular weight of at least 10 kDa; b) from 0.1% by weight to 10% by weight of at least one film-forming polymer selected from Polyurethane-93, Polyurethane-99, styrene / acrylate copolymers and mixtures thereof; and (c) from 0.05% by weight to 20% by weight of at least one pigment. Dyeing process for keratinous fibers such as hair comprising applying the composition according to any one of claims 1 to 9 to keratinous fibers such as hair.