Composition and process for dyeing keratin fibres

Abstract

This 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 different from the protein; and c) at least one colorant selected from pigments, direct dyes, and mixtures thereof. The invention also relates to a method for dyeing keratin fibers, such as hair, comprising applying the composition to the keratin fibers, such as hair.

Description

Technical Field

[0001] This invention relates to a cosmetic composition. In particular, it relates to a composition for dyeing keratin fibers, such as hair. The invention also relates to a method for dyeing keratin fibers, such as hair. Background Technology

[0002] For a long time, many people have sought to change the color of their hair, and especially to cover up their gray or white hair.

[0003] In the field of staining keratin fibers, especially human keratin fibers, various techniques for staining keratin fibers are known, including non-permanent staining using direct dyes or pigments, and permanent staining using dye precursors.

[0004] There are three main types of hair dyeing methods: a) "Permanent" dyeing, which functions to provide a substantial change in natural color, and uses oxidative dyes that penetrate into the hair fibers and form dyes through an oxidative condensation process; b) Non-permanent, semi-permanent, or direct dyeing that does not use an oxidative condensation process and is resistant to four or five shampoo washes; it consists of dyeing hair with a dye composition containing direct dyes. c) Temporary coloring, which causes a change in the natural color of the hair that persists between shampoo washes and is used to enhance or correct an already achieved tone. It can also be similar to a "makeup" process.

[0005] Temporary staining methods consist of the use of pigments. Specifically, the application of pigments to the surface of keratin fibers typically allows for visible coloring on dark hair because the surface pigments mask the fiber's natural color.

[0006] However, some hair dye products on the market have the drawback of transfer, meaning they become at least partially deposited on some carriers (especially clothing or skin) that they may come into contact with, leaving traces.

[0007] Furthermore, the coloring obtained by this dyeing method exhibits poor tolerance to water and external agents (such as sebum, sweat, combing and / or friction).

[0008] Therefore, there is a need to develop a composition for dyeing keratin fibers such as hair that has good color transfer tolerance and is durable against water and various corrosive factors that keratin fibers such as hair may be subjected to (e.g., combing and / or friction). Summary of the Invention

[0009] One object of this application is to provide a composition for dyeing keratin fibers, such as hair, which has good color transfer resistance and durability against water and various corrosive factors that keratin fibers, such as hair, may be subjected to (e.g., combing and / or friction).

[0010] Another object of this application is to provide a method for dyeing keratin fibers, such as hair.

[0011] Therefore, the present invention provides a composition, preferably used for dyeing keratin 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 that is different from a protein; and c) At least one colorant selected from pigments, direct dyes and mixtures thereof.

[0012] It has been found that the compositions according to the invention form a colored coating on hair that is durable against water and various corrosive factors that hair may be subjected to, such as combing and / or friction.

[0013] After the composition is applied to keratin fibers such as hair, the composition exhibits good transfer tolerance and has limited deposition on carriers (e.g., skin and / or clothing) in contact with the composition.

[0014] Preferably, the composition according to the invention is a composition for hair dyeing.

[0015] The present invention also relates to a method for dyeing keratin fibers, such as hair, comprising applying the composition described above to keratin fibers, such as hair.

[0016] Other subjects, features, aspects and advantages of the invention will become more apparent upon reading the following detailed description and examples.

[0017] Detailed description of the invention Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In the event of any conflict between the definitions of terms in this specification and their common understanding by one of ordinary skill in the art to which this invention pertains, the definitions set forth herein shall prevail.

[0018] As used herein, unless otherwise stated, the endpoints of a numerical range are included within the range, particularly in expressions “between ... and ...” and “from ... to ...”.

[0019] Furthermore, the expression "at least one / kind" used in this specification is equivalent to the expression "one / kind or more / kinds".

[0020] In this application, the term "comprising / including" should be interpreted as encompassing all specifically mentioned features as well as optional, additional, and unspecified features. As used herein, the use of the term "comprising / including" also discloses embodiments in which features other than those specifically mentioned are absent (i.e., "composed of").

[0021] Unless otherwise stated, all numerical values ​​used in the specification and claims to indicate amounts of components, etc., should be understood to be modified by the term "approximately". Therefore, unless otherwise indicated, the numerical values ​​and parameters described herein are approximate and can be changed as needed for the desired purpose.

[0022] As used in this article, molecular weight refers to weight-average molecular weight.

[0023] Unless otherwise stated, all percentages in this invention refer to weight percentages.

[0024] The term "keratinous fibers" or "keratinous fibers" here refers to fibers that contain keratin as a major component, and examples of such fibers include hair, eyelashes, eyebrows, etc.

[0025] For the purposes of this invention and unless otherwise stated: - An "alkyl" group indicates a saturated group containing, for example, 1 to 30 carbon atoms, either straight or branched. - An "aminoalkyl" group represents an alkyl group as defined above, wherein the alkyl group contains an NH2 group; - A "hydroxyalkyl" group represents an alkyl group as defined above, wherein the alkyl group contains an OH group; - "alkylene" groups refer to groups based on straight-chain or branched divalent saturated C1-C10 hydrocarbons, such as methylene, ethylene, or propylene; - A "cycloalkyl" or "alicycloalkyl" group means a group based on a cyclic saturated monocyclic or polycyclic, preferably monocyclic hydrocarbon, containing 1 to 3 rings, preferably 2 rings, and containing 3 to 40 carbon atoms, particularly 3 to 24 carbon atoms, more particularly 3 to 20 carbon atoms, even more particularly 3 to 12 carbon atoms, preferably 5 to 10 carbon atoms, such as cyclopropyl, cyclopentyl, cyclohexyl, cycloheptyl, or norbornyl, or isobornyl, particularly cyclopropyl, cyclopentyl, or cyclohexyl. It should be understood that the cycloalkyl group may be substituted by one or more (C1-C4) alkyl groups, such as methyl; preferably, the cycloalkyl group is isobornyl. - An "aryl" group is a cyclic group based on a monocyclic, bicyclic, or tricyclic, fused or unfused, unsaturated, and aromatic hydrocarbon, comprising 6 to 30 carbon atoms, preferably 6 to 14 carbon atoms, more preferably 6 to 12 carbon atoms; preferably, the aryl group comprises a 6-carbon ring, such as phenyl, naphthyl, anthraceneyl, phenanthryl, and biphenyl, and it should be understood that the aryl group may be substituted by one or more (C1-C4) alkyl groups, such as methyl, preferably tolyl, xylyl, or methylnaphthyl; preferably, the aryl group represents phenyl; - The "aryloxy" group represents an aryl-oxy group, where "aryl" is as defined above; - An "alkoxy" group represents an alkyl-oxy group, where "alkyl" is as defined above.

[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 that is different from a protein; and c) At least one colorant selected from pigments, direct dyes and mixtures thereof.

[0027] protein The compositions of the present invention comprise at least one protein having a molecular weight of at least 10 kDa.

[0028] As used in this article, 1 kDa equals 1000 g / mol.

[0029] The protein may be of animal or plant origin.

[0030] The protein may be hydrolyzed or non-hydrolyzed, preferably non-hydrolyzed.

[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] As used in this article, the term "hydrolyzed protein" refers to the hydrolysis products of homogeneous or heterogeneous proteins or their respective components, derivatives or combinations thereof.

[0033] The term “non-hydrolyzed protein” as used in this article means that the protein has not been hydrolyzed.

[0034] Protein sources that can be used in the compositions 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, eggs, wheat, corn, soybeans, oats, casein, albumin, or any collagen or keratin substance or its derivatives.

[0035] Preferably, the protein is selected from silk protein, pea protein, soy protein, wheat protein, corn protein, collagen, and mixtures thereof, and is non-hydrolyzed.

[0036] More preferably, the protein is selected from non-hydrolyzed corn protein, collagen and mixtures thereof, and even more preferably from non-hydrolyzed corn protein, especially corn gliadin.

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

[0038] According to a preferred embodiment, the composition of the present invention comprises at least one protein selected from corn protein, collagen and mixtures thereof, said protein being non-hydrolyzed and having a molecular weight of at least 10 kDa.

[0039] According to even more preferred embodiments, the compositions of the present invention comprise at least one protein selected from corn protein, collagen, and mixtures thereof, said protein being non-hydrolyzed and having a molecular weight of at least 15 kDa.

[0040] You may mention the product Arorganic-zein, sold by AROMA HOLLY LIMITED.

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

[0042] Film-forming polymers The compositions of the present invention contain at least one film-forming polymer that is different from a protein.

[0043] Preferably, the film-forming polymer is selected from hydrophilic film-forming polymers, hydrophobic film-forming polymers, and mixtures thereof.

[0044] For the purposes of this invention, the term "polymer" means a compound corresponding to the repetition of one or more units (which are derived from compounds called monomers). These units are repeated at least twice, and preferably at least three times.

[0045] The term "hydrophobic polymer" refers to a polymer that has a solubility in water of less than 1% by weight at 25°C.

[0046] The term "hydrophilic polymer" refers to a polymer that has a solubility in water of 1% by weight or greater at 25°C.

[0047] The term "film-forming" polymer refers to a polymer that can form a macroscopic continuous film on a carrier, particularly on keratin materials, either on its own or in the presence of an auxiliary film-forming agent, and preferably forms a cohesive film.

[0048] According to a preferred embodiment, the film-forming polymer is selected from hydrophobic film-forming polymers.

[0049] In a particularly preferred embodiment, the hydrophobic film-forming polymer is selected from the following polymers: - Film-forming polymers that are soluble in organic solvent media, especially lipophilic polymers; this means that the polymer is soluble or miscible in organic media and forms a single homogeneous phase when incorporated into the media; - Film-forming polymers that are dispersible in organic solvent media, meaning that the polymer forms an insoluble phase in the organic medium and remains stable and / or compatible once incorporated into the medium. In particular, such 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 dispersion comprises polymer particles whose surface is stabilized by at least one stabilizer; these non-aqueous dispersions are often referred to as NADs. - Film-forming polymers are formed in the form of aqueous dispersions of polymer particles, meaning that the polymer forms an insoluble phase in water. Once incorporated into water, the polymer remains stable and / or compatible, and the polymer particles can be stabilized on their surface by at least one stabilizer. These polymer particles are often referred to as latex; in this case, the composition must contain an aqueous phase.

[0050] Among the hydrophobic film-forming polymers that may be used in the compositions of the present invention, synthetic polymers, free radical or condensation polymers, naturally derived polymers, and mixtures thereof may be mentioned.

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

[0052] Nonionic, amphoteric, anionic, or cationic hydrophobic film-forming polymers can be used.

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

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

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

[0056] C1-C22 alkyl (meth)acrylate monomers, particularly C10-C22 alkyl (meth)acrylates, and more particularly C12-C20 alkyl (meth)acrylates. C1-C22 alkyl (meth)acrylate monomers may 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)acrylates include sodium (meth)acrylate, potassium (meth)acrylate, and ammonium (meth)acrylate.

[0058] The acrylic polymers used can be in the form of aqueous dispersions.

[0059] Acrylic polymers, as aqueous dispersions, can be used according to the present invention: - Aqueous dispersions of acrylic polymers marketed by BASF under the name Acronal DS-6250®, by DSM under the names Neocryl A-45®, Neocryl XK-90®, Neocryl A-1070®, Neocryl A-1090®, Neocryl BT-62®, Neocryl A-1079® and Neocryl A-523®, by BASF under the names Joncryl 95® and Joncryl 8211®, by DaitoKasey Kogyo under the names Daitosol 5000 AD® (INCI name: acrylic copolymer) or Daitosol 5000 SJ® (INCI name: acrylic / ethylhexyl acrylate copolymer), and by Interpolymer under the name Syntran 5760 CG® (INCI name: styrene / acrylic / ammonium methacrylate copolymer).

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

[0061] Hydrophobic film-forming polymers may also be selected from homopolymers and copolymers that can be obtained from amides of acid monomers; (meth)acrylamides may be mentioned, and especially N-alkyl (meth)acrylamides, particularly C2-C12 alkyl, such as N-ethylacrylamide, N-tert-butylacrylamide or N-octylacrylamide; N-(C1-C4)dialkyl (meth)acrylamides and perfluoroalkyl (meth)acrylates.

[0062] Also mentioned are copolymers with the CTFA (4th edition, 1991) name of octylacrylamide / acrylate / butylaminoethyl methacrylate copolymer, such as products sold by National Starch under the names Amphomer® or Lovocryl® 47, and copolymers with the CTFA name of acrylate / octylacrylamide copolymer, such as products sold by National Starch under the names Dermacryl® LT or Dermacryl® 79.

[0063] According to the invention, copolymers of unsaturated vinyl esters of alkoxylated fatty alcohols can also be used. Such unsaturated vinyl esters are in particular esters of acrylic acid, methacrylic acid and itaconic acid, and such alkoxylated fatty alcohols are in particular stearyl alcohol polyether-20 and cetyl alcohol polyether-20.

[0064] For example, it may mention Aculyn® 22 (acrylate / stearyl ether-20 methacrylate copolymer), Aculyn® 28 (acrylate / behendol ether-25 methacrylate copolymer), Structure 2001® (acrylate / stearyl ether-20 itaconic acid copolymer), Structure 3001® (acrylate / cetyl ether-20 itaconic acid copolymer), Structure Plus® (acrylate / aminoacrylate / C10-30 alkyl PEG-20 itaconic acid copolymer), Carbopol® 1342, 1382, Ultrez 20, Ultrez 21 (acrylate / C10-30 alkyl acrylate crosspolymer), Synthalen W2000® (acrylate / palm oil ether-25 methacrylate copolymer), or Soltex OPT sold by Dow Chemical. (Acrylic (ester) / C12-22 alkyl methacrylate copolymer).

[0065] Hydrophobic film-forming polymers may also be selected from homopolymers and copolymers obtained from vinyl monomers. Homopolymers or copolymers of N-vinylpyrrolidone, vinylcaprolactam, vinyl-N-(C1-C6)alkylpyrrole, vinyloxazole, vinylthiazole, vinylpyrimidine, or vinylimidazole may be mentioned.

[0066] Examples of vinylpyrrolidone copolymers that can be used in this 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 / triacene copolymer, or VP / acrylic acid / laurate methacrylate copolymer.

[0067] Hydrophobic film-forming polymers can also be selected from homopolymers and copolymers that can be obtained from olefins such as ethylene, propylene, butene, isoprene, and butadiene.

[0068] Hydrophobic film-forming polymers can also be selected from polyurethane.

[0069] The polyurethanes that can be used in the compositions 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 that can be used in the compositions of the present invention include polyurethane-1, polyurethane-6, polyurethane-32, polyurethane-34, polyurethane-35, polyurethane-48, polyurethane-93, and polyurethane-99.

[0071] As commercial products of polyurethane, references may be made to products sold by BASF under the names Luviset PUR® and Luviset® Si PUR (INCI names Polyurethane-1 and Polyurethane-6, respectively), and products sold by COVESTRO under the name BAYCUSAN CQ E 1000 (INCI name Polyurethane-93). Preferably, the film-forming polymer according to the invention is selected from acrylic polymers, polyurethanes, polyesters, polyamides, and mixtures thereof.

[0072] More preferably, the hydrophobic film-forming polymer according to the present invention is selected from acrylic polymers, polyurethanes, and mixtures thereof.

[0073] More preferably, 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.

[0074] Even more preferably, the film-forming polymer is selected from polyurethane-93, polyurethane-99, styrene / acrylate / ammonium methacrylate copolymers and mixtures thereof.

[0075] Most preferably, the film-forming polymer is selected from polyurethane-93, styrene / acrylate / ammonium methacrylate copolymers 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% to 10% by weight, preferably from 0.2% to 5% by weight, more preferably from 0.3% to 3% by weight, relative to the total weight of the composition.

[0077] Colorant The compositions of the present invention comprise at least one colorant selected from pigments, direct dyes and mixtures thereof.

[0078] pigment Preferably, the colorant is selected from pigments.

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

[0080] The term "pigment" refers to any pigment that imparts color to keratin materials. Its 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 specifically selected from organic and / or inorganic pigments known in the art, particularly those described in Kirk-Othmer's Encyclopedia of Chemical Technology and Ullmann's Encyclopedia of Industrial Chemistry.

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

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

[0084] Pigments can be selected from, for example, mineral pigments, organic pigments, lakes, special effects pigments such as pearlescent pigments or glitter flakes and mixtures thereof.

[0085] The pigment can be a mineral pigment. The term "mineral pigment" refers to any pigment that meets the definition in the Inorganic Pigments chapter of Ullmann's Encyclopedia. Among the inorganic pigments available in this invention, iron oxides, chromium oxides, manganese violet, ultramarine blue, chromium hydrate, ferric blue, and titanium oxides may be mentioned.

[0086] Pigments can be organic pigments. The term "organic pigment" refers to any pigment that meets the definition in the organic pigments chapter of Ullmann's encyclopedia.

[0087] Organic pigments may be specifically selected from compounds of nitroso, nitro, azo, xanthones, pyrene, quinoline, anthraquinone, triphenylmethane, fluorane, phthalocyanine, metal complexes, isoindolineone, isoindoline, quinacridone, perinone, perylene, diketopyrrolopyrrole, indigo, thioindigo, dioxazine, triphenylmethane, and quinoline.

[0088] Specifically, white or colored organic pigments may be selected from carmine, carbon black, aniline black, azo yellow, quinacridone, phthalocyanine blue, blue pigments listed in the Color Index with numbers CI 42090, 69800, 69825, 74100, and 74160, yellow pigments listed in the Color Index with numbers CI 11680, 11710, 19140, 20040, 21100, 21108, 47000, and 47005, green pigments listed in the Color Index with numbers CI 61565, 61570, and 74260, orange pigments listed in the Color Index with numbers CI 11725, 45370, and 71105, and other pigments listed in the Color Index with numbers CI 42090, 69800, 69825, 74100, and 74160. Red pigments of the numbers 12085, 12120, 12370, 12420, 12490, 14700, 15525, 15580, 15620, 15630, 15800, 15850, 15865, 15880, 26100, 45380, 45410, 58000, 73360, 73915, and 75470, obtained by oxidative polymerization of indole or phenol derivatives as described in patent FR 2 679771.

[0089] Other examples include pigment pastes of organic pigments, such as products marketed by Hoechst under the following name: - Cosmenyl Yellow 10G: Yellow 3 pigment (CI 11710); - Cosmenyl Yellow G: Yellow 1 pigment (CI 11680); - Cosmenyl Orange GR: Orange 43 pigment (CI 71105); - Cosmenyl Red R: Red 4 pigment (CI 12085); - Cosmenyl Carmine FB: Red 5 Pigment (CI 12490); - Cosmenyl Violet RL: Violet 23 pigment (CI 51319); - Cosmenyl Blue A2R: Blue 15.1 pigment (CI 74160); - Cosmenyl Green GG: Green 7 pigment (CI 74260); - Cosmenyl Black R: Black 7 pigment (CI 77266).

[0090] 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 may in particular consist of particles comprising an inorganic core, at least one binder for attaching an organic pigment to the core, and at least one organic pigment that at least partially covers the core.

[0091] Organic pigments can also be lakes. The term "lake" refers to a dye adsorbed onto insoluble particles, thus the resulting combination remains insoluble during use.

[0092] The mineral matrix on which the dye is adsorbed is, for example, alumina, silicon dioxide, sodium calcium borosilicate, or calcium aluminum borosilicate and aluminum.

[0093] Carmine acid may be mentioned among dyes. Dyes known by the following names may also be mentioned: 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), and D&C Blue 1 (CI 42 090).

[0094] An example of a lake that may be mentioned is a product known by the following name: D&C Red 7 (CI 15 850:1).

[0095] Pigments can also be special effects pigments. The term "special effects pigments" refers to pigments that typically produce a non-uniform, colored appearance that varies with viewing conditions (light, temperature, viewing angle, etc.) and is characterized by a certain hue, a certain saturation, and a certain level of brightness. They are thus different from colored pigments, which provide standard, uniform opaque, translucent, or transparent hues.

[0096] There are several types of special effect pigments: those with low refractive index, such as fluorescent or photochromic pigments, and those with high refractive index, such as pearlescent pigments, interference pigments, or glitter flakes.

[0097] Examples of special effects pigments that may be mentioned include pearlescent pigments such as mica coated with titanium or bismuth oxychloride, colored pearlescent pigments such as mica coated with titanium and iron oxides, mica coated with iron oxides, mica coated with titanium and especially with iron blue or chromium oxides, mica coated with titanium and organic pigments as defined above, and pearlescent pigments based on bismuth oxychloride. Pearlescent pigments that may be mentioned include Cellini (mica-TiO2-lake) sold by BASF, Prestige (mica-TiO2) sold by Eckart, Prestige Bronze (mica-Fe2O3) sold by Eckart, and Colorona (mica-TiO2-Fe2O3) sold by Merck.

[0098] Also mentioned are the gold pearlescent pigments sold 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 pearlescent pigments sold by Merck under the names Bronze fine (17384) (Colorona) and Bronze (17353) (Colorona), and by BASF under the name Super bronze (Cloisonne); the orange pearlescent pigments sold by BASF under the names Orange 363C (Cloisonne) and Orange MCR 101 (Cosmica), and by Merck under the names Passion orange (Colorona) and Matteorange (17449) (Microna); and the Nu-antiquecopper 340XB (Cloisonne) and Brown pearlescent pigments sold by BASF. Brown pearlescent pigment sold as CL4509 (Chromalite); copper-toned pearlescent pigment sold by BASF under the name Copper 340A (Timica); red-toned pearlescent pigment sold by Merck under the name Sienna fine (17386) (Colorona); yellow-toned pearlescent pigment sold by BASF under the name Yellow (4502) (Chromalite); gold-toned red pearlescent pigment sold by BASF under the name Sunstone G012 (Gemtone); pink pearlescent pigment sold by BASF under the name Tan opale G005 (Gemtone); gold-toned black pearlescent pigment sold by BASF under the name Nu antique bronze 240 AB (Timica); blue pearlescent pigment sold by Merck under the name Matte blue (17433) (Microna); and pearlescent pigment sold by Merck under the name Xirona. Silver sells silver-toned white pearlescent pigments; and Merck sells gold-green to pink-orange pearlescent pigments, and mixtures thereof, under the name Indian summer (Xirona).

[0099] As another example of a pearlescent agent, particles on a borosilicate substrate coated with titanium dioxide may also be mentioned.

[0100] The particles, including those coated with titanium oxide onto a glass substrate, are specifically sold by Toyal under the name Metashine MC1080RY.

[0101] Finally, examples of pearlescent pigments that may also be mentioned include polyethylene terephthalate glitter flakes, particularly those marketed by Meadowbrook Inventions under the name Silver 1P 0.004X0.004 (Silver Glitter Flakes). Multilayer pigments based on synthetic substrates, such as alumina, silica, sodium calcium borosilicate, calcium aluminum borosilicate, and aluminum, are also conceivable.

[0102] Specialty pigments can also be selected from reflective particles, specifically particles whose size, structure (especially the thickness of the layers that make them up), physical and chemical properties, and surface conditions allow them to reflect incident light. Where appropriate, this reflection can be strong enough to produce visible highlights on the surface of the composition or mixture (when applied to a carrier to be made up), i.e., brighter spots that contrast with their environment, making them appear shimmering.

[0103] Reflective particles can be selected to not significantly alter the coloring effect produced by the colorants combined with them, and to more specifically optimize their color rendering effect. They can be particularly available in colors or hues of yellow, pink, red, bronze, orange, brown, gold, and / or copper.

[0104] These particles can take various forms, and can be in particular flake or spherical form, especially spherical.

[0105] Reflective particles, regardless of their form, may or may not have a multilayer structure, and in the case of a multilayer structure, they may have, for example, at least one layer of uniform thickness, particularly a layer of reflective material.

[0106] When reflective particles do not have a multilayer structure, they can be composed, for example, of metal oxides, particularly synthetically obtained titanium or iron oxides.

[0107] When reflective particles have a multilayer structure, they may include, for example, a natural or synthetic substrate, particularly a synthetic substrate at least partially coated with at least one layer of reflective material (especially at least one metal or metallic material). The substrate may be made of one or more organic and / or inorganic materials.

[0108] More specifically, it may be selected from glass, ceramics, graphite, metal oxides, alumina, silicon dioxide, silicates (especially aluminosilicates and borosilicates), and synthetic mica and mixtures thereof, the list being not limiting.

[0109] The reflective material may include a layer of metal or a metallic material.

[0110] Reflective particles are specifically described in documents JP-A-09188830, JP-A-10158450, JP-A-10158541, JP-A-07258460 and JP-A-05017710.

[0111] Again, as examples of reflective particles including mineral substrates coated with a metal layer, we may also mention particles including borosilicate substrates coated with silver.

[0112] Silver-coated glass substrate particles (in flake form) are marketed by Toyal under the name Microglass MetashineREFSX 2025 PS. Particles with a glass substrate coated with a nickel / chromium / molybdenum alloy are marketed by the same company under the names Crystal Star GF 550 and GF 2525.

[0113] Alternatively, particles comprising a metal substrate (e.g., silver, aluminum, iron, chromium, nickel, molybdenum, gold, copper, zinc, tin, magnesium, steel, bronze, or titanium) may be used, said substrate being coated with at least one layer of at least one metal oxide (e.g., titanium oxide, aluminum oxide, iron oxide, cerium oxide, chromium oxide, silicon oxide, and mixtures thereof).

[0114] Examples that may be mentioned include aluminum powder, bronze powder, or copper powder coated with SiO2 sold by Eckart under the name Visionaire.

[0115] Also mentioned are non-attached pigments with interference effects, such as liquid crystals (Helicones HC from Wacker) or interference holographic glitter sheets (Geometric Pigments or Spectraf / x from Spectratek). Special effects pigments also include fluorescent pigments, whether they fluoresce in sunlight or produce ultraviolet fluorescence, phosphorescent pigments, photochromic pigments, thermochromic pigments, and quantum dots (such as those marketed by Quantum Dots Corporation).

[0116] The diversity of pigments that can be used in this invention allows for a wide range of colors to be obtained, as well as specific optical effects such as metallic or interference effects.

[0117] The pigments used in the compositions according to the invention are typically 10 nm to 200 µm in size, preferably 20 nm to 80 µm, and more preferably 30 nm to 50 µm.

[0118] Pigments can be dispersed in the composition using a dispersant.

[0119] Dispersants are used to protect dispersed particles from aggregation or flocculation. These dispersants can be surfactants, oligomers, polymers, or mixtures thereof, carrying one or more functional groups with a strong affinity for the surface of the particles to be dispersed. In particular, they can be physically or chemically attached to the pigment surface. These dispersants also contain at least one functional group that is compatible with or soluble in the continuous medium. Specifically, esters of 12-hydroxystearic acid, and especially 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 by Avecia under the name Solsperse 21 000, polyglycerol-2-dimeric hydroxystearate (CTFA name) sold by Henkel under the number DehymylsPGPH, or polyhydroxystearic acid, such as the product sold by Uniqema under the number Arlacel P100, and mixtures thereof.

[0120] As other dispersants that can be used in the compositions of the present invention, quaternary ammonium derivatives of condensed fatty acids, such as Solsperse 17 000 sold by Avecia, and polydimethylsiloxane / oxypropylene mixtures, such as those sold by Dow Corning under the numbers DC2-5185 and DC2-5225 C, may be mentioned.

[0121] The pigments used in the composition can be surface-treated with organic reagents.

[0122] Therefore, in the context of this invention, surface-pretreated pigments are those that have undergone complete or partial surface treatment with organic agents before dispersion in the compositions according to the invention, in a chemical, electronic, electrochemical, mechanochemical, or mechanical manner, such as those described particularly in Cosmetics and Toiletries, February 1990, Vol. 105, pp. 53-64. These organic agents may be selected from, for example, waxes, such as carnauba 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; lecithin; sodium, potassium, magnesium, iron, titanium, zinc, or aluminum salts of fatty acids, such as aluminum stearate or aluminum laurate; metal alkoxides; polyethylene; (meth)acrylic polymers, such as polymethyl methacrylate; polymers and copolymers containing acrylate units; alkanolamines; silicone compounds, such as silicones, particularly polydimethylsiloxane; organofluorine compounds, such as perfluoroalkyl ethers; and fluorosilicone compounds.

[0123] The surface-treating pigments useful in the composition can also be treated with mixtures of these compounds, and / or can undergo multiple surface treatments.

[0124] In the context of this invention, useful surface treatment pigments can be prepared according to surface treatment techniques well known to those skilled in the art, or they can be commercially available.

[0125] Preferably, the surface-treated pigment is coated with an organic layer.

[0126] Organic reagents for treating pigments can be deposited on pigments through solvent evaporation, chemical reactions between surface agent molecules, or the formation of covalent bonds between the surface agent and the pigment.

[0127] Therefore, surface treatment can be performed, for example, through a chemical reaction between the surface agent and the pigment surface, and through the formation of covalent bonds between the surface agent and the pigment or filler. This method is specifically described in U.S. Patent 4,578,266.

[0128] Organic reagents that are covalently bonded to pigments are preferred.

[0129] The surface treatment agent may be present in an amount of 0.1% to 50% by weight relative to the total weight of the surface treatment pigment, preferably in an amount of 0.5% to 30% by weight relative to the total weight of the surface treatment pigment, and even more preferably in an amount of 1% to 20% by weight.

[0130] Preferably, the surface treatment of the pigment is selected from the following treatments: -PEG-silicone treatment, such as AQ surface treatment sold by LCW; - Polymethylsiloxane treatment, such as SI surface treatment sold by LCW; - Polydimethylsiloxane treatment, such as Covasil 3.05 surface treatment sold by LCW; - Polydimethylsiloxane / trimethylsiloxysilicate treatment, such as Covasil 4.05 surface treatment sold by LCW; - Magnesium myristate treatment, such as MM surface treatment sold by LCW; - Aluminum dimyristate treatment, such as MI Surface Treatment sold by Miyoshi; - Perfluoropolymethyl isopropyl ether treatment, such as FHC surface treatment sold by LCW; -Isostearyl sebacate monoester treatment, such as HS surface treatment sold by Miyoshi; - Perfluoroalkyl phosphate / salt treatment, such as PF surface treatment sold by Daito; - Acrylic ester / polydimethylsiloxane copolymer and perfluoroalkyl phosphate / salt treatment, such as FSA surface treatment sold by Daito; - Polymethylhydrosiloxane / perfluoroalkyl phosphate / salt treatment, such as FS01 surface treatment sold by Daito; - Acrylic ester / polydimethylsiloxane copolymer treatment, such as ASC surface treatment sold by Daito; - Treatment with isopropyl titanium triisostearate, such as ITT surface treatments sold by Daito; - Acrylic copolymer treatment, such as APD surface treatment sold by Daito; - Perfluoroalkyl phosphate / salt / triisostearic acid isopropoxytitanium salt treatment, such as PF + ITT surface treatment sold by Daito.

[0131] According to a specific embodiment of the invention, the dispersant is present together with the organic or mineral pigment in the form of submicron-sized particles.

[0132] The term "submicron" or "submicronic" refers to a pigment that has been micronized by a micronization method and has an average particle size of less than one micrometer (µm), particularly 0.1 to 0.9 µm, and preferably 0.2 to 0.6 µm.

[0133] According to one embodiment, the dispersant and pigment are present in an amount (dispersant: pigment) according to a weight ratio of 1:4 to 4:1, particularly 1.5:3.5 to 3.5:1 or more preferably 1.75:3 to 3:1.

[0134] Therefore, dispersants can have a silicone backbone, such as silicone polyethers and amino silicone dispersants. Suitable dispersants that may be mentioned include: -Amino silicones, i.e., silicones containing one or more amino groups, such as those sold under the following names and numbers: BYK LPX 21879 sold by BYK, and 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. - Carboxyl-containing polydimethylsiloxane (PDMS) silicones, such as X-22162 and X-22370 sold by Shin-Etsu; epoxy silicones, such as GP-29, GP-32, GP-502, GP-504, GP-514, GP-607, GP-682 and GP-695 sold by Genesee Polymers; or Tego® RC 1401, Tego® RC 1403 and Tego® RC1412 sold by Evonik.

[0135] According to a particular implementation, the dispersant is of the aminosilicone type and is cationic.

[0136] Preferably, the pigment is selected from mineral pigments, mixed mineral-organic pigments, or organic pigments.

[0137] In a variant of the invention, the pigment is an organic pigment, preferably an organic pigment surface-treated with an organic reagent selected from silicone compounds.

[0138] In another variation, the pigment is a mineral pigment.

[0139] Direct dyes The compositions according to the present invention may contain one or more direct dyes.

[0140] The term "direct dye" refers to natural and / or synthetic dyes other than oxidative dyes. These dyes will spread onto the fibers.

[0141] They can be ionic or nonionic, with cationic or nonionic types being preferred.

[0142] Examples of suitable direct dyes that may be mentioned include azo direct dyes; polymethyl cyanide dyes such as cyanines, hemicyanines, and styryls; carbonyl dyes; azazine dyes; nitro(hetero)aryl dyes; tri(hetero)arylmethane dyes; porphyrin dyes; phthalocyanine dyes and natural direct dyes, either alone or in mixtures.

[0143] Among the natural direct dyes that can be used according to the present invention are lawsone, juglone, alizarin, purpurin, carminic acid, kermesic acid, purpurogallin, protocatechaldehyde, indigo, isatin, curcumin, spinulosin, apigenidin, and orceins. Extracts or decoctions containing these natural dyes, and especially henna-based pastes or extracts, can also be used.

[0144] The colorant may be present in a total amount of 0.001% to 20% by weight, and preferably 0.005% to 15% by weight, relative to the total weight of the composition according to the invention.

[0145] The pigment may be present in a total content of 0.05% to 20% by weight, preferably 0.1% to 15% by weight, and more preferably 0.5% to 10% by weight, relative to the total weight of the composition according to the invention.

[0146] The direct dye may be present in a total amount of 0.001% to 10% by weight relative to the total weight of the composition, preferably 0.005% to 5% by weight relative to the total weight of the composition according to the invention.

[0147] Alkoxysilane The compositions of the present invention may contain at least one alkoxysilane.

[0148] According to a preferred embodiment, the composition comprises at least one alkoxysilane selected from compounds of formula (I) or formula (I'), their oligomers, and / or mixtures thereof: (I) (I') in: -R a The alkyl group, such as methyl, contains 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms, more preferably 1 to 4 carbon atoms, and particularly 1 to 2 carbon atoms, wherein the alkyl group is optionally substituted with an aryl group; an alkoxy group, such as ethoxy, contains 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, and particularly 1 to 2 carbon atoms; or an aryl group contains 6 to 12 carbon atoms. -R band R c The same or different can represent hydrogen atoms; alkyl groups containing 1 to 20 carbon atoms, preferably 1 to 6 carbon atoms, and especially 1 to 4 carbon atoms, particularly ethyl groups, should be understood that if Ra does not represent an alkoxy group, then Rb and Rc cannot simultaneously represent hydrogen atoms; -R d and R e The same or different can represent hydrogen atoms; alkyl groups containing 1 to 20 carbon atoms, preferably 1 to 6 carbon atoms, and especially 1 to 4 carbon atoms; cycloalkyl groups containing 3 to 20 carbon atoms; aryl groups containing 6 to 12 carbon atoms; and aminoalkyl groups containing 1 to 20 carbon atoms. -A independently represents a straight-chain or branched alkylene group containing 1 to 10 carbon atoms, which may be interrupted by at least one heteroatom selected from O, S, NH or carbonyl (CO), preferably NH; -Q represents carbonyl (CO); -r represents an integer from 0 to 1.

[0149] Among the alkoxysilanes of formula (I), their oligomers and / or mixtures thereof, 3-aminopropyltriethoxysilane (APTES), 3-aminopropylmethyldiethoxysilane (APMDES), 3-ureopropyltrimethoxysilane and N-cyclohexylaminomethyltriethoxysilane may be specifically mentioned.

[0150] APTES can be purchased, for example, from Dow Corning under the name Xiameter OFS-6011 Silane, from Momentive Performance Materials under the name Silsoft A-1100, or from Shin-Etsu under the name KBE-903.

[0151] Compound (I) may also represent Dynasylan SIVO 210 or Dynasylan 1505, which are sold by Evonik.

[0152] 3-Uretopropyltrimethoxysilane can be purchased, for example, from Gelest under the designation SIU9058.0.

[0153] N-Cycloheylaminomethyltriethoxysilane can be purchased, for example, from Wacker under the name Geniosil XL 926.

[0154] In particular, among the alkoxysilanes of formula (I'), their oligomers and / or mixtures thereof, N,N-bis[3-(trimethoxysilyl)propyl]ethylenediamine (CAS RN: 74956-86-8), N1,N1-bis[3-(triethoxysilyl)propyl]-1,2-ethylenediamine (CAS RN: 457065-96-2), 1,2-ethylenediamine, N1-[3-(triethoxysilyl)propyl]-N1-[3-(trimethoxysilyl)propyl]- (CAS RN: 1638528-78-5), and mixtures thereof.

[0155] Preferably, alkoxysilanes, their oligomers, and / or mixtures thereof are selected from compounds of formula (I): (I) in: -R a The alkyl group, preferably methyl, contains 1 to 10 carbon atoms, especially 1 to 4 carbon atoms, and particularly 1 to 2 carbon atoms; or the alkoxy group, preferably ethoxy, contains 1 to 4 carbon atoms, preferably 1 to 2 carbon atoms. -R b and R c They may be the same or different, representing alkyl groups containing 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, such as ethyl groups; -R d and R e Same, representing a hydrogen atom, or R d Represents a hydrogen atom and R e This indicates C5-C6 cycloalkyl groups, such as cyclohexyl; -A independently represents a straight-chain or branched alkylene group containing 1 to 10 carbon atoms, which may be interrupted by at least one heteroatom selected from O, S and NH or carbonyl (CO), preferably NH; -r indicates an integer equal to 0.

[0156] Preferably, the alkoxysilane, its oligomers and / or mixtures thereof are selected from compounds of formula (I), wherein Ra represents ethoxy, Rb and Rc are the same and represent ethyl, Rd and Re represent hydrogen atoms, A represents propylene, and r represents an integer equal to 0.

[0157] According to a preferred embodiment, the alkoxysilane of formula (I), its oligomers and / or mixtures thereof are 3-aminopropyltriethoxysilane (APTES).

[0158] The alkoxysilane of formula (I) or formula (I'), its oligomers and / or mixtures thereof may be present in a total amount of 0.1% to 30% by weight, preferably 0.3% to 20% by weight, more preferably 0.5% to 15% by weight, even more preferably 0.8% to 10% by weight, and even more preferably 0.8% to 5% by weight relative to the total weight of the composition.

[0159] According to another preferred embodiment, the composition according to the invention comprises at least one alkoxysilane of formula (II), its oligomer, and / or mixture thereof: (II) in: -R a The alkyl group, such as methyl, contains 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms, more preferably 1 to 4 carbon atoms, and particularly 1 to 2 carbon atoms, wherein the alkyl group is optionally substituted with an aryl group; an alkoxy group, such as ethoxy, contains 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, and particularly 1 to 2 carbon atoms; or an aryl group contains 6 to 12 carbon atoms. -R b The alkyl group, particularly the ethyl group, represents a hydrogen atom or contains 1 to 20 carbon atoms, preferably 1 to 6 carbon atoms, and especially 1 to 4 carbon atoms; -R c The alkyl group, such as methyl, contains 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms, more preferably 1 to 4 carbon atoms, and especially 1 to 2 carbon atoms, wherein the alkyl group is optionally substituted with an aryl group; an alkoxy group, such as ethoxy, contains 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, and especially 1 to 2 carbon atoms; or an aryl group contains 6 to 12 carbon atoms. It should be understood that if R a and R c If R does not represent an alkoxy group, then b It cannot represent a hydrogen atom; -k represents an integer from 0 to 5, preferably an integer from 0 to 3; -R f Represents a hydrogen atom; an alkyl group containing 1 to 10 carbon atoms, particularly 1 to 4 carbon atoms; or a group of formula (IIa): (IIa) Rn represents a hydroxyl group (OH); and an alkyl group containing 1 to 10 carbon atoms, preferably a methyl group.

[0160] Among the alkoxysilanes of formula (II), oligomers thereof and / or mixtures thereof, tetraethoxysilane (TEOS), methyltrimethoxysilane (MTMS), methyltriethoxysilane (MTES), dimethyldiethoxysilane (DMDES), diethyldiethoxysilane, dipropyldiethoxysilane, propyltriethoxysilane, isobutyltriethoxysilane, phenyltriethoxysilane, phenylmethyldiethoxysilane, diphenyldiethoxysilane, benzyltriethoxysilane, benzylmethyldiethoxysilane, dibenzyldiethoxysilane, acetoxymethyltriethoxysilane and mixtures thereof may be specifically mentioned.

[0161] TEOS can be purchased, for example, from Evonik under the names Dynasylan® A or Dynasylan® A SQ.

[0162] MTES can be purchased, for example, from Evonik under the name Dynasylan® MTES.

[0163] DMDES can be purchased, for example, from Gelest under the number SID3404.0.

[0164] Preferably, the alkoxysilanes of formula (II), their oligomers, and / or mixtures thereof satisfy: -R a It means an alkoxy group containing 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, and especially 1 to 2 carbon atoms, such as methoxy or ethoxy; or an alkyl group containing 1 to 10 carbon atoms, optionally substituted with an aryl group, preferably 1 to 2 carbon atoms, optionally substituted with an aryl group; -R b This indicates an alkyl group containing 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, and particularly 1 to 2 carbon atoms, such as methyl or ethyl. -R c The alkoxy group, such as methoxy or ethoxy, contains 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, and especially 1 to 2 carbon atoms. -k represents an integer from 0 to 3, preferably an integer equal to 0; -R f It represents a hydrogen atom or an alkyl group containing 1 to 10 carbon atoms, and especially 1 to 4 carbon atoms, such as methyl or ethyl.

[0165] More preferably, the alkoxysilanes of formula (II), their oligomers, and / or mixtures thereof satisfy: -R a This indicates an alkyl group containing 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, and particularly 1 to 2 carbon atoms, such as methyl or ethyl. -R bThis indicates an alkyl group containing 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, and particularly 1 to 2 carbon atoms, such as methyl or ethyl. -R c The alkoxy group, such as methoxy or ethoxy, contains 1 to 10 carbon atoms, preferably 1 to 4 carbon atoms, and especially 1 to 2 carbon atoms. -k represents an integer equal to 0; -R f This indicates an alkyl group containing 1 to 10 carbon atoms, and particularly 1 to 4 carbon atoms, such as methyl or ethyl.

[0166] According to a preferred embodiment, the alkoxysilane of formula (II), its oligomers and / or mixtures thereof are methyltrimethoxysilane (MTMS) or methyltriethoxysilane (MTES).

[0167] The alkoxysilane of formula (II), its oligomers and / or mixtures thereof may be present in a total amount of 0.1% to 30% by weight, preferably 0.3% to 20% by weight, more preferably 0.5% to 15% by weight, even more preferably 0.8% to 10% by weight, and even more preferably 0.8% to 5% by weight relative to the total weight of the composition.

[0168] Preferably, the composition according to the invention comprises at least one alkoxysilane of formula (I), its oligomers and / or mixtures thereof, more preferably 3-aminopropyltriethoxysilane (APTES).

[0169] According to a preferred embodiment, the alkoxysilane may be present in a total amount of 0.1% to 30% by weight, preferably 0.3% to 20% by weight, more preferably 0.5% to 15% by weight, even more preferably 0.8% to 10% by weight, and even more preferably 0.8% to 5% by weight relative to the total weight of the composition.

[0170] According to a preferred embodiment, the alkoxysilane of formula (I), its oligomers and / or mixtures thereof may be present in a total amount of 0.1% to 30% by weight, preferably 0.3% to 20% by weight, more preferably 0.5% to 15% by weight, even more preferably 0.8% to 10% by weight, and even more preferably 0.8% to 5% by weight relative to the total weight of the composition.

[0171] organic solvents The compositions of the present invention may contain at least one organic solvent.

[0172] Preferably, the organic solvent is selected from C2-C8 monohydric alcohols, C2-C8 diols, C2-C8 fatty acids, and mixtures thereof.

[0173] As used in this article, C2-C8 monohydric alcohols can be saturated or unsaturated, and can be straight-chain or branched.

[0174] Preferably, the organic solvent is selected from saturated, straight-chain or branched C2-C6 monohydric alcohols, such as ethanol, propanol, butanol, isopropanol, and isobutanol.

[0175] As used in this article, C2-C8 diols can be saturated or unsaturated, and can be straight-chain or branched.

[0176] Preferably, the organic solvent is selected from saturated, straight-chain or branched C2-C6 diols, such as ethylene glycol, propylene glycol, butanediol, isopentyl glycol, hexanediol, and octyl glycol.

[0177] As used herein, C2-C8 fatty acids can be saturated or unsaturated, and can be straight-chain or branched. Optionally, the hydrogen atoms attached to the carbon atoms can be replaced by hydroxyl groups. Examples of C2-C8 fatty acids include acetic acid, lactic acid, citric acid, butyric acid, valeric acid, hexanoic acid, heptanoic acid, and octanoic acid.

[0178] More preferably, the organic solvent is selected from ethanol, propylene glycol, acetic acid, lactic acid, and mixtures thereof.

[0179] Even more preferably, the organic solvent is selected from ethanol, propylene glycol and mixtures thereof.

[0180] Advantageously, the organic solvent is present in the composition of the present invention in an amount of 5% to 90% by weight, preferably 10% to 85% by weight, more preferably 20% to 80% by weight, relative to the total weight of the composition.

[0181] In some preferred embodiments, the organic solvent is selected from C2-C8 monohydric alcohols, particularly ethanol, and is present in the composition of the present invention in an amount of 10% to 85% by weight, preferably 15% to 80% by weight, more preferably 15% to 70% by weight, relative to the total weight of the composition.

[0182] In some preferred embodiments, the organic solvent is selected from C2-C8 glycols, particularly propylene glycol, and is present in the composition of the present invention in an amount of 10% to 85% by weight, preferably 15% to 80% by weight, more preferably 20% to 70% by weight, relative to the total weight of the composition.

[0183] water Preferably, the composition of the present invention further comprises water.

[0184] Advantageously, water is present in the composition of the present invention in an amount of 5% to 80% by weight, preferably 10% to 70% by weight, more preferably 15% to 60% by weight, relative to the total weight of the composition.

[0185] adjuvant The compositions according to the present invention may also contain one or more cosmetic adjuvants.

[0186] For example, the composition may contain one or more additives well known in the art, such as antioxidants, pH adjusters, and preservatives.

[0187] Those skilled in the art can select these optional additional compounds and their amounts so that the inherently advantageous properties associated with the invention are not (or substantially not) adversely affected by the contemplated additions.

[0188] According to a preferred embodiment, the composition according to the invention comprises, by weight relative to the total weight of the composition: a) 0.1% to 20% by weight of at least one protein selected from silk protein, pea protein, soy protein, wheat protein, corn protein and mixtures thereof, wherein the protein is non-hydrolyzed and has a molecular weight of at least 10 kDa. b) 0.1% 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) At least one pigment, ranging from 0.05% to 20% by weight.

[0189] According to a preferred embodiment, the composition according to the invention comprises, by weight relative to the total weight of the composition: a) 1.5% to 8% by weight of at least one corn protein, wherein the protein is non-hydrolyzed and has a molecular weight of at least 15 kDa; b) 0.3% to 3% by weight of at least one film-forming polymer selected from polyurethane-93, styrene / acrylate / ammonium methacrylate copolymers and mixtures thereof; and c) 0.5% to 10% by weight of at least one pigment selected from mineral pigments, mixed mineral-organic pigments or organic pigments.

[0190] Preparation and Uses The compositions according to the present invention can be prepared by conventional methods in the cosmetic field and can be used for hair dyeing.

[0191] The present invention relates to a method for dyeing keratin fibers such as hair, comprising applying the composition described above to keratin fibers such as hair.

[0192] This method can be repeated multiple times to obtain the desired coloring.

[0193] Example The following examples are used to illustrate the present invention and should not be construed as limiting the scope.

[0194] The main raw materials used, their trade names, and suppliers are listed in Table 1.

[0195] Table 1 .

[0196] Examples 1-2 and Comparative Examples 1-4 of the present invention The compositions of Examples (IE) 1-2 and Comparative Examples (CE) 1-4 according to the present invention were prepared using the components listed in Table 2 (unless otherwise stated, the content is expressed as a weight percentage of the component relative to the total weight of each composition—AM: active ingredient): Table 2 .

[0197] The compositions of Examples 1 and 2 of this invention are compositions according to the present invention.

[0198] The composition of Comparative Example 1 does not contain at least one film-forming polymer that is different from a protein.

[0199] The compositions of Comparative Examples 2-4 do not contain at least one protein with a molecular weight of at least 10 kDa.

[0200] Preparation procedure: The above composition is prepared as follows: 1. Mix the organic solvent and water for 5 minutes to obtain a solvent mixture; 2. Preheat the solvent mixture in a 50°C water bath for 5 minutes; 3. Add the protein (if present) to the solvent mixture and stir for 10 minutes to obtain a homogenized system; 4. Add the film-forming polymer (if present) to the homogenized system and stir for 5 minutes; 5. Cool to room temperature, then add the colorant to the system and stir for 10 minutes to obtain a homogeneous composition.

[0201] evaluate: The color transfer resistance and water resistance of the compositions of Examples 1-2 and Comparative Examples 1-4 of the present invention were evaluated.

[0202] Resistance to color transfer 1.5 g of the test sample was applied to a 3 g strand of natural hair (grade 3), and the hair strand was then blow-dried. Next, the hair was rubbed with a wiping cloth, and six professional hairdressers scored the color stains on the wiping cloth according to the following criteria; the scores were then averaged: 1: Almost all the color transferred to the wiping cloth; 2: The wiping cloth has a lot of colored stains; 3: There are colored stains on the wiping cloth, but the degree of color is acceptable; 4. There are a few colored stains on the wiping cloth, but they are not obvious; 5. There are no color stains on the wiping cloth.

[0203] Waterproofing 1.5 g of the test sample was applied to a 3 g strand of natural black hair, and the hair strand was then blow-dried. Next, 0.5 g of water was sprayed onto the hair strand, and the hair was then rubbed with a cloth. Six professional hairdressers scored the color stains on the cloth according to the following criteria, and the scores were averaged: 1: Almost all the color transferred to the wiping cloth; 2: The wiping cloth has a lot of colored stains; 3: There are colored stains on the wiping cloth, but the degree of color is acceptable; 4. There are a few colored stains on the wiping cloth, but they are not obvious; 5. There are no color stains on the wiping cloth.

[0204] The color transfer resistance and water resistance scores of the compositions of Examples 1-2 and Comparative Examples 1-4 of this invention are summarized in Table 3.

[0205] Table 3 .

[0206] As can be seen from Table 3, the composition according to the invention forms a colored coating on hair that is durable against water and various corrosive factors that hair may suffer (such as combing and / or friction).

[0207] Furthermore, the composition exhibits good resistance to color transfer after being applied to hair.

Claims

1. A composition, preferably used for dyeing keratin 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 that is different from a protein; and c) At least one colorant selected from pigments, direct dyes and mixtures thereof.

2. The composition according to claim 1, wherein the protein is selected from non-hydrolyzed silk protein, pea protein, soybean protein, wheat protein, corn protein, collagen, and mixtures thereof.

3. The composition according to claim 1 or 2, wherein the molecular weight of the protein is at least 15 kDa.

4. The composition according to any one of claims 1-3, wherein the protein is present in an amount of 0.1% to 20% by weight, preferably 0.5% to 15% by weight, more preferably 1% to 10% by weight, and even more preferably 1.5% to 8% by weight, relative to the total weight of the composition.

5. The composition according to any one of claims 1-4, wherein the film-forming polymer is selected from hydrophobic film-forming polymers, preferably selected from acrylic polymers, polyurethanes and mixtures thereof.

6. The composition according to any one of claims 1-5, 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.

7. The composition according to any one of claims 1-6, wherein the film-forming polymer is present in an amount of 0.1% to 10% by weight, preferably 0.2% to 5% by weight, more preferably 0.3% to 3% by weight, relative to the total weight of the composition.

8. The composition according to any one of claims 1-7, wherein the composition comprises one or more pigments selected from mineral pigments, mixed mineral-organic pigments, or organic pigments.

9. The composition according to any one of claims 1-8, wherein the colorant is present in a total content of 0.001 wt% to 20 wt%, and preferably 0.005 wt% to 15 wt%, relative to the total weight of the composition, and preferably the pigment is present in a total content of 0.05 wt% to 20 wt%, preferably 0.1 wt% to 15 wt%, and more preferably 0.5 wt% to 10 wt%, relative to the total weight of the composition.

10. The composition according to any one of claims 1-9 further comprises at least one organic solvent, preferably selected from C2-C8 monohydric alcohols, C2-C8 diols, C2-C8 fatty acids and mixtures thereof, more preferably selected from ethanol, propylene glycol, acetic acid, lactic acid and mixtures thereof.

11. The composition according to claim 10, wherein the organic solvent is present in an amount of 5% to 90% by weight, preferably 10% to 85% by weight, more preferably 20% to 80% by weight, relative to the total weight of the composition.

12. The composition according to any one of claims 1-11, further comprising water.

13. The composition according to claim 12, wherein the water is present in an amount of 5% to 80% by weight, preferably 10% to 70% by weight, more preferably 15% to 60% by weight, relative to the total weight of the composition.

14. The composition according to claim 1, comprising, relative to the total weight of the composition: a) 0.1% to 20% by weight of at least one protein selected from silk protein, pea protein, soy protein, wheat protein, corn protein and mixtures thereof, wherein the protein is non-hydrolyzed and has a molecular weight of at least 10 kDa. b) 0.1% 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) At least one pigment, ranging from 0.05% to 20% by weight.

15. A method for dyeing keratin fibers, such as hair, comprising applying the composition according to any one of claims 1-14 to keratin fibers, such as hair.