COMPOSIÇÃO E PROCESSO COSMÉTICO PARA FIBRAS DE QUERATINA

Abstract

The present invention relates to a composition comprising: (a) at least one cationic polymer; (b) at least one monovalent non-polymeric acid or a salt thereof; and (c) at least one non-polymeric acid having two or more pKa values or a salt thereof, wherein the (a) cationic polymer is selected from chitosans with a molecular weight of more than 20,000. The composition according to the present invention can provide keratin fibers such as hair with good alignment and shape recovery effects, and can include at least one environmentally-friendly ingredient.

Description

1 / 44 “COMPOSITION AND COSMETIC PROCESS FOR KERATIN FIBERS” Technical Field

[001] The present invention relates to a composition that includes an ionically crosslinked high molecular weight chitosan, as well as to a cosmetic process that utilizes the composition. Background of the Invention

[002] The formulation of environmentally friendly cosmetic products, which are designed and developed considering environmental issues, is becoming an important objective to address global challenges.

[003] Therefore, it is essential to propose more sustainable compositions, preparation processes and ingredients to address these environmental concerns.

[004] In this context, it is important to develop new cosmetic compositions with a better carbon footprint, particularly by promoting the use of renewable raw materials and / or materials with a good naturalness index and / or materials of natural origin and, more particularly, materials of plant origin, reducing the use of compounds of petrochemical origin.

[005] As is known in the state of the art, certain cosmetic compositions and any other compositions utilize a polyion complex, which is formed by an anionic polymer and a cationic polymer.

[006] For example, document WO 2021 / 171909 discloses a composition comprising at least one polyion complex particle comprising at least one cationic polymer, at least one anionic polymer and at least one non-polymeric acid having two or more pKa values. Petition 870250083866, dated 09 / 17 / 2025, page 49 / 97 2 / 44 Description of the Invention

[007] There is a need for a composition that can provide keratin fibers, such as hair, with good straightening and shape-restoring effects, while also including environmentally friendly ingredient(s). The straightening effect means that the keratin fibers can be easily arranged into a desired line, such as a straight line. The shape-restoring effect means that the keratin fibers can easily return to their original shape.

[008] Thus, a first objective of the present invention is to provide a composition that can give keratin fibers, such as hair, good alignment and shape recovery effects.

[009] Furthermore, a second objective of the present invention is to provide a composition that can include at least one environmentally friendly ingredient.

[010] The objectives mentioned above of the present invention can be achieved by means of a composition, preferably a cosmetic composition, and more preferably a cosmetic composition for keratin fibers, such as hair, comprising: (a) at least one cationic polymer; (b) at least one monovalent nonpolymeric acid or a salt thereof; and (c) at least one nonpolymeric acid having two or more pKa values ​​or a salt thereof, wherein the (a) cationic polymer is selected from chitosans with a molecular weight (Da) greater than 20,000.

[011] The amount of (a) cationic polymer(s) in the composition according to the present invention may be from 0.01% to 15% in Petition 870250083866, dated 09 / 17 / 2025, page 50 / 97 3 / 44 by weight, preferably from 0.05% to 10% by weight, and more preferably from 0.1% to 5% by weight, in relation to the total weight of the composition.

[012] The (b) monovalent nonpolymeric acid or a salt thereof may be a monovalent nonpolymeric organic acid or a salt thereof, preferably a monovalent carboxylic acid or a salt thereof, and more preferably lactic acid or a salt thereof.

[013] The amount of (b) monovalent non-polymeric acid(s) or salt(s) thereof in the composition according to the present invention may be from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight, and more preferably from 0.1% to 5% by weight, relative to the total weight of the composition.

[014] The (c) non-polymeric acid having two or more pKa values ​​or a salt thereof may be an organic acid or a salt thereof, preferably a hydrophilic or water-soluble organic acid having at least one phosphoric acid group and / or at least two carboxylic acid groups, or salts thereof, and more preferably phosphoric acid, diphosphoric acid, citric acid, tartaric acid or salts thereof.

[015] The amount of (c) non-polymeric acid(s) having two or more pKa values ​​or salt(s) thereof in the composition according to the present invention may be from 0.001% to 10% by weight, preferably from 0.003% to 5% by weight and, more preferably, from 0.005% to 1% by weight, relative to the total weight of the composition.

[016] Preferably, the composition according to the present invention comprises (d) water.

[017] The amount of (d) water in the composition according to the present invention may be from 50% to 99% by weight, preferably from 60% to 97% by weight and, more preferably, from 70% to 95% by weight, relative to the total weight of the composition. Petition 870250083866, dated 09 / 17 / 2025, page 51 / 97 4 / 44

[018] The composition according to the present invention may further comprise (and) at least one oil.

[019] The (e) oil may be selected from vegetable oils, synthetic ester oils and mixtures thereof, and preferably from vegetable oils.

[020] The amount of oil(s) in the composition according to the present invention may be from 1% to 50% by weight, preferably from 3% to 45% by weight and, more preferably, from 5% to 40% by weight, relative to the total weight of the composition.

[021] The composition according to the present invention may further comprise (f) at least one fatty acid.

[022] The (f) fatty acid may be selected from saturated and unsaturated fatty acids, linear or branched, C4-C26, preferably C6-C24, most preferably C8-C22.

[023] The (a) cationic polymer can be hydrophobized by the (f) fatty acid.

[024] The amount of (f) fatty acid(s) in the composition according to the present invention may be from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight and, more preferably, from 0.1% to 5% by weight, relative to the total weight of the composition.

[025] The present invention also relates to a cosmetic process for keratin fibers, such as hair, comprising applying the composition according to the present invention to the keratin fibers; and drying the composition to form a cosmetic film on the keratin fibers. Brief Description of the Figures

[026] Figure 1 shows schematic drawings that show the Petition 870250083866, dated 09 / 17 / 2025, page 52 / 97 5 / 44 behavior of (a) cationic polymers around a greasy phase, if present, such as an oil droplet dispersed in an aqueous phase, and examples of hydrophobization of (a) cationic polymer, in an embodiment of the present invention.

[027] Figure 1A shows a schematic drawing that shows the behavior of (a) cationic polymers around a fatty phase, if present, such as an oil droplet, dispersed in an aqueous phase, in the case where the fatty phase does not include (f) fatty acid.

[028] Figure 1B shows a schematic drawing that shows the behavior of (a) cationic polymers around a fatty phase, if present, such as an oil droplet, dispersed in an aqueous phase, in the case of the fatty phase including (f) fatty acid.

[029] Figure 1C shows a schematic drawing that shows an example of a hydrophobization mechanism of the (a) cationic polymer by the (f) fatty acid. Best Mode of Implementing the Invention

[030] After diligent research, the inventors discovered that it is possible to provide a composition that can give keratin fibers, such as hair, good straightening and shape-restoring effects, and can include at least one environmentally friendly ingredient.

[031] Thus, the composition according to the present invention comprises: (a) at least one cationic polymer; (b) at least one monovalent nonpolymeric acid or a salt thereof; and (c) at least one nonpolymeric acid having two or more pKa values ​​or a salt thereof, wherein Petition 870250083866, dated 09 / 17 / 2025, page 53 / 97 6 / 44 The cationic polymer is selected from chitosans with a molecular weight (Da) greater than 20,000.

[032] Keratin fibers treated with the composition according to the present invention can be easily arranged into a desired line, such as a straight line. Furthermore, keratin fibers treated with the composition according to the present invention can easily return to their original shape. Therefore, the composition according to the present invention can provide good malleability to keratin fibers, such as hair.

[033] The (a) cationic polymer can be ionically crosslinked by the (c) non-polymeric acid having two or more pKa values ​​or a salt thereof. The crosslinked cationic polymer can provide better bonding and shape memory effects between keratin fibers, such as hair. Therefore, the crosslinked cationic polymer can provide keratin fibers, such as hair, with good alignment and shape recovery effects. Thus, the present invention can provide, for example, excellent hair styling effects.

[034] Since chitosans can be obtained from natural resources, the cationic polymer is an environmentally friendly ingredient. Therefore, the composition according to the present invention may include an environmentally friendly ingredient.

[035] Furthermore, ingredients (b) and (c) can be derived from renewable materials, such as plants and / or biodegradable materials. Therefore, the composition according to the present invention can be environmentally friendly.

[036] Preferably, the composition according to the invention comprises (d) water.

[037] The composition according to the present invention may comprise an aqueous phase comprising (d) water. Petition 870250083866, dated 09 / 17 / 2025, page 54 / 97 7 / 44

[038] If the composition according to the present invention comprises (e) at least one oil, the composition according to the present invention may comprise fatty phases comprising the (e) oil. If the composition according to the present invention comprises (f) at least one fatty acid, the (f) fatty acid may be present in the fatty phases.

[039] The fatty phases may be dispersed in the aqueous phase. In this case, the fatty phases are discontinuous phases, while the aqueous phase is a continuous phase. Thus, the composition according to the present invention may be in the O / W (oil in water) form.

[040] The cationic polymer can be hydrophobized by the fatty acid. The hydrophobized cationic polymer can be present between the fatty phase and the aqueous phase to stabilize the fatty phase. Thus, the fatty phases can be stably dispersed in the aqueous phase.

[041] The composition according to the present invention is stable even when it comprises a relatively large amount of the (and) oil. Thus, the composition according to the present invention can comprise a relatively large amount of the (and) oil.

[042] The composition according to the present invention is stable for a long period of time. In other words, phase separation of the composition according to the present invention can be avoided for a long period of time.

[043] Consequently, the composition according to the present invention can be stored for a long period of time.

[044] The present invention will be explained in more detail below. Composition Cationic Polymer

[045] The composition according to the present invention Petition 870250083866, dated 09 / 17 / 2025, page 55 / 97 8 / 44 comprises (a) at least one cationic polymer.

[046] There is no limit to the type of (a) cationic polymer. Two or more different types of cationic polymers may be used in combination. Thus, a single type of cationic polymer or a combination of different types of cationic polymers may be used.

[047] A cationic polymer has a positive charge density. The charge density of the (a) cationic polymer can vary from 0.01 meq / g to 20 meq / g, preferably from 0.05 to 15 meq / g, more preferably from 0.1 to 10 meq / g.

[048] The cationic polymer is selected from chitosans with a molecular weight (Da) greater than 20,000, preferably greater than 30,000, more preferably greater than 50,000 and, even more preferably, greater than 80,000. In other words, the cationic polymer is a high molecular weight chitosan.

[049] The molecular weight (Da) of the cationic polymer may be less than 2,000,000, preferably less than 1,000,000, more preferably less than 500,000 and, even more preferably, less than 300,000.

[050] Thus, the molecular weight (Da) of the cationic polymer (a) may be greater than 20,000 and less than 2,000,000, preferably greater than 30,000 and less than 1,000,000, more preferably greater than 50,000 and less than 500,000, and even more preferably greater than 80,000 and less than 300,000.

[051] Unless otherwise defined in the descriptions, “molecular weight” means a weight-average molecular weight. Molecular weight can be measured or determined by gel permeation chromatography, for example, according to ASTM D5296-19.

[052] Chitosan is very uncommon in nature. It is reported Petition 870250083866, dated 09 / 17 / 2025, pp. 56 / 97 9 / 44 only in the exoskeletons of certain insects, such as termite queens, and in the cell walls of a specific class of fungi, the zygomycetes.

[053] Chitosan can be obtained by deacetylation of chitin. Chitin is a polysaccharide composed of several N-acetyl-Dglucosamine units linked together by a β (1,4) type linkage.

[054] The ideal chemical structure of chitosan is a sequence of β-D-glucosamine monomers linked by a (1^4) glycosidic bond.

[055] “Chitosan”, according to the present invention, means any copolymer formed from the constituent units N-acetyl-D-glucosamine and D-glucosamine, the degree of acetylation of which is less than 90%, preferably less than 80%, preferably less than 70%, preferably less than 60% and preferably less than 50%. Chitosan consists of glucosamine sugar units (deacetylated units) and N-acetyl-D-glucosamine units (acetylated units) linked together by β (1,4) type linkages and is a Poly(N-acetyl-D-glucosamine)poly(D-glucosamine) type polymer.

[056] Most preferably, the degree of acetylation of chitosan is less than or equal to 40%, preferably less than or equal to 35%, preferably less than or equal to 25%, preferably less than or equal to 15%, and preferably less than or equal to 10%.

[057] The degree of acetylation is the percentage of acetylated units relative to the total number of units, and can be determined by Fourier transform infrared spectroscopy (FT-IR) or by titration with a strong base.

[058] The chitosan of the present invention is preferably a polysaccharide prepared from a fungal source. In particular, it is extracted and purified from safe and abundant food or biotechnological fungal sources, such as Agaricus bisporus or Aspergillus niger. Petition 870250083866, dated 09 / 17 / 2025, page 57 / 97 10 / 44

[059] The chitosan of the present invention is preferably derived from the mycelium of an Ascomycete-type fungus, in particular Aspergillus niger and / or a Basidiomycete fungus, in particular Lentinula edodes (shiitake) and / or Agaricus bisporus. Preferably, the fungus is Aspergillus niger.

[060] Chitosan can be of genetically modified (GMO) origin, but is preferably of non-GMO origin.

[061] The chitosan according to the present invention is native, that is, it is not modified. In particular, it does not contain any chemical modification.

[062] A method for preparing chitosan is as described in document WO 03 / 068824.

[063] Preferably, the chitosan used in the present invention is in powder form. It is marketed by Kitozyme under the names Kiosmetine or Kionutrime, for example, Kiosmetine-CSH and Kiosmetine P.

[064] The amount of (a) cationic polymer(s) in the composition according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more, and most preferably 0.1% by weight or more, relative to the total weight of the composition.

[065] The amount of cationic polymer(s) in the composition according to the present invention may be 15% by weight or less, preferably 10% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition.

[066] The amount of the cationic polymer(s) in the composition according to the present invention may be from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight, and most preferably from 0.1% to 5% by weight, relative to the total weight of the composition. Petition 870250083866, dated 09 / 17 / 2025, page 58 / 97 11 / 44 Monovalent non-polymeric acid or salt thereof

[067] The composition according to the present invention comprises (b) at least one monovalent nonpolymeric acid or a salt thereof. Two or more monovalent nonpolymeric acids or salts thereof may be used in combination. Thus, a single type of monovalent nonpolymeric acid or a salt thereof may be used, or a combination of different types of monovalent nonpolymeric acids or salts thereof.

[068] The term “non-polymeric” here means that the acid is not obtained by the polymerization of two or more monomers. Therefore, a non-polymeric acid does not correspond to an acid obtained by the polymerization of two or more monomers, such as polyacrylic acids.

[069] The term “salt” here means a salt formed by the addition of suitable base(s) to a monovalent nonpolymeric acid, which can be obtained from a reaction of the monovalent nonpolymeric acid with the base(s) according to methods known to those skilled in the art. As salts, metallic salts may be mentioned, for example, salts with alkali metals, such as Na and K, and salts with alkaline earth metals, such as Mg and Ca, and ammonium salts.

[070] It is preferable that the molecular weight of (b) the monovalent non-polymeric acid or its salt be less than 1000, preferably 500 or less, and most preferably 100 or less.

[071] The (b) monovalent non-polymeric acid or a salt thereof may be included in the aqueous phase formed by (d) water. The (b) monovalent non-polymeric acid or a salt thereof may promote the dissolution of the (a) cationic polymer in the aqueous phase.

[072] (b) Monovalent non-polymeric acid or a salt thereof may be selected from monovalent organic or inorganic acids and salts thereof, preferably organic acids Petition 870250083866, dated 09 / 17 / 2025, page 59 / 97 12 / 44 monovalent and salts thereof, and more preferably monovalent carboxylic acids and salts thereof.

[073] The non-polymeric monovalent acid has a single acid group which can be selected from the group consisting of a carboxylic group, a sulfuric group, a sulfonic group, a phosphoric group, a phosphonic group and a mixture thereof.

[074] The non-polymeric monovalent acid can be selected from hydroxyl acids and, preferably, alpha-hydroxy acids. As alpha-hydroxy acids, lactic acid and glycolic acid can be mentioned, for example.

[075] The monovalent nonpolymeric acid may be a monovalent nonpolymeric organic acid, preferably a monovalent carboxylic acid and, more preferably, lactic acid.

[076] The amount of (b) monovalent non-polymeric acid(s) or salt(s) thereof in the composition according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more and, more preferably, 0.1% by weight or more, relative to the total weight of the composition.

[077] The amount of (b) monovalent non-polymeric acid(s) or salt(s) thereof in the composition according to the present invention may be 15% by weight or less, preferably 10% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition.

[078] The amount of (b) monovalent non-polymeric acid(s) or salt(s) thereof in the composition according to the present invention may be from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight, and more preferably from 0.1% to 5% by weight, relative to the total weight of the composition. Petition 870250083866, dated 09 / 17 / 2025, pp. 60 / 97 13 / 44 A non-polymeric acid possessing two or more acid dissociation constants.

[079] The composition according to the present invention comprises (c) at least one non-polymeric acid having two or more pKa values ​​or a salt thereof, i.e., at least one non-polymeric acid having two or more acid dissociation constants or a salt thereof. The pKa value (acid dissociation constant) is well known to those skilled in the art and should be determined at a constant temperature, such as 25 °C.

[080] The (c) non-polymeric acid having two or more pKa values ​​or a salt thereof may be included in the aqueous phase which includes (d) water. The non-polymeric acid having two or more pKa values ​​may function as a crosslinking agent for the (a) cationic polymer.

[081] The term “non-polymeric” here means that the acid is not obtained by the polymerization of two or more monomers. Therefore, non-polymeric acid does not correspond to an acid obtained by the polymerization of two or more monomers, such as polyacrylic acid.

[082] It is preferable that the molecular weight of the (c) non-polymeric acid having two or more pKa values ​​or a salt thereof be 1000 or less, preferably 800 or less and, most preferably, 700 or less.

[083] There is no limit to the type of (c) nonpolymeric acid having two or more pKa values ​​or a salt thereof. Two or more different types of (c) nonpolymeric acids having two or more pKa values ​​or salts thereof may be used in combination. Thus, one may use a single type of (c) nonpolymeric acid having two or more pKa values ​​or a salt thereof, or a combination of different types of (c) nonpolymeric acids having two or more pKa values ​​or salts thereof. Petition 870250083866, dated 09 / 17 / 2025, pp. 61 / 97 14 / 44

[084] The term “salt” here means a salt formed by the addition of suitable base(s) to a nonpolymeric acid having two or more pKa values, which can be obtained from a reaction of the nonpolymeric acid having two or more pKa values ​​with the base(s) according to methods known to those skilled in the art. Examples of salts include metallic salts, such as salts with alkali metals like Na and K, and salts with alkaline earth metals like Mg and Ca, and ammonium salts.

[085] The (c) non-polymeric acid having two or more pKa values ​​or a salt thereof may be an organic acid, an inorganic acid or a salt thereof and, preferably, a hydrophilic or water-soluble organic acid, an inorganic acid or a salt thereof.

[086] A non-polymeric acid having two or more pKa values ​​may have at least two monovalent acid groups or at least one polyvalent acid group, which may be selected from the group consisting of a carboxylic group, a sulfuric group, a sulfonic group, a phosphoric group, a phosphonic group, a phenolic hydroxyl group and a mixture thereof.

[087] It is preferable that the non-polymeric acid having two or more pKa values ​​has at least one phosphoric group and / or at least two carboxylic acid groups.

[088] A non-polymeric acid having two or more pKa values ​​may be a polyvalent non-polymeric acid. The polyvalent non-polymeric acid may be selected from the group consisting of dicarboxylic acids, disulfonic acids, phosphoric acid, diphosphoric acids and a mixture thereof.

[089] The (c) non-polymeric acid having two or more pKa values ​​or a salt thereof may be selected from the group consisting of oxalic acid, malonic acid, succinic acid, glutaric acid, acid Petition 870250083866, dated 09 / 17 / 2025, pp. 62 / 97 15 / 44 adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, fumaric acid, maleic acid, malic acid, citric acid, aconitic acid, oxaloacetic acid, tartaric acid and salts thereof; aspartic acid, glutamic acid and salts thereof; terephthalylidene dicamphor sulfonic acid or salts thereof (Mexoryl SX), Benzophenone-9; phytic acid and salts thereof;Red 2 (Amaranth), Red 102 (New Coccine), Yellow 5 (Tartrazine), Yellow 6 (Sunset Yellow FCF), Green 3 (Fast Green FCF), Blue 1 (Brilliant Blue FCF), Blue 2 (Indigo Carmine), Red 201 (Lithol Rubine B), Red 202 (Lithol Rubine BCA), Red 204 (Lake Red CBA), Red 206 (Lithol Red CA), Red 207 (Lithol Red BA), Red 208 (Lithol Red SR), Red 219 (Brilliant Lake Red R), Red 220 (Deep Maroon), Red 227 (Fast Acid Magenta) Green SF Yellowish), Blue 203 (Patent Blue CA), Blue 205 (Alfazurine FG), Red 401 (Violamine R), Red 405 (Permanent Re F5R), Red 502 (Ponceau 3R), Red 503 (Ponceau R), Red 504 (Ponceau SX), Green 401 (Naphtol Green B), Green 402 (Guinea Green B) and Black 401 (Naphtol Blue Black); folic acid, ascorbic acid, erythorbic acid and salts thereof; cystine and salts thereof; EDTA and salts thereof; glycyrrhizin and salts thereof; and a mixture thereof.

[090] It may be preferable that the (c) non-polymeric acid having two or more pKa values ​​or a salt thereof be selected from the group consisting of phosphoric acid, diphosphoric acid, phosphonic acid, phytic acid, citric acid, tartaric acid and salts thereof, and more preferably phosphoric acid, diphosphoric acid, phytic acid, citric acid, tartaric acid and salts thereof.

[091] The amount of (c) non-polymeric acid(s) having two or more pKa values ​​or salt(s) thereof in the composition according to the present invention may be 0.001% by weight or more, preferably 0.003% by weight or more, and most preferably 0.005% by weight. Petition 870250083866, dated 09 / 17 / 2025, pp. 63 / 97 16 / 44 weight or more, in relation to the total weight of the composition.

[092] The amount of (c) non-polymeric acid(s) having two or more pKa values ​​or salt(s) thereof in the composition according to the present invention may be 10% by weight or less, preferably 5% by weight or less, and most preferably 1% by weight or less, relative to the total weight of the composition.

[093] The amount of (c) non-polymeric acid(s) having two or more pKa values ​​or salt(s) thereof in the composition according to the present invention may be from 0.001% to 10% by weight, preferably from 0.003% to 5% by weight, and most preferably from 0.005% to 1% by weight, relative to the total weight of the composition. WATER

[094] Preferably, the composition according to the present invention comprises (d) water.

[095] (d) Water may constitute an aqueous phase which may be, for example, a continuous phase in the composition according to the present invention.

[096] The amount of (d) water may be 50% by weight or more, preferably 60% by weight or more, and most preferably 70% by weight or more, in relation to the total weight of the composition.

[097] The amount of (d) water may be 99% by weight or less, preferably 97% by weight or less, and most preferably 95% by weight or less, in relation to the total weight of the composition.

[098] The amount of (d) water can be from 50% to 99% by weight, preferably from 60% to 97% by weight, and most preferably from 70% to 95% by weight, in relation to the total weight of the composition. OIL

[099] The composition according to the present invention may Petition 870250083866, dated 09 / 17 / 2025, pp. 64 / 97 17 / 44 understand (and) at least one oil. If two or more oils are used, they may be the same or different.

[0100] The (e) oil may constitute fatty phases which may be, for example, dispersed or discontinuous phases in the composition according to the present invention.

[0101] Here, “oil” means a fatty compound or substance that is in the form of a liquid or paste (not solid) at room temperature (25 °C) under atmospheric pressure (760 mmHg). Like oils, those commonly used in cosmetics can be used alone or in combination. These oils can be volatile or non-volatile.

[0102] The oil may be a non-polar oil, such as a hydrocarbon oil, a silicone oil or similar; a polar oil, such as a vegetable or animal oil and an ester oil or an ether oil; or a mixture thereof.

[0103] The (e) oil may be selected from the group consisting of oils derived from biological resources, such as vegetable or animal oils; oils derived from non-biological resources, such as synthetic oils, silicone oils, hydrocarbon oils and fatty alcohols derived from chemicals; and mixtures thereof.

[0104] Examples of vegetable oils include, for instance, apricot oil, linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

[0105] Examples of animal oils include, for example, squalene and squalane.

[0106] Examples of synthetic oils include Petition 870250083866, dated 09 / 17 / 2025, pp. 65 / 97 18 / 44 mentioned alkane oils, such as isododecane and isohexadecane, ester oils, ether oils, and artificial triglycerides.

[0107] Ester oils are preferably liquid esters of saturated or unsaturated, linear or branched C1-C26 aliphatic monoacids or polyacids and saturated or unsaturated, linear or branched C1-C26 aliphatic monoalcohols or polyalcohols, the total number of carbon atoms of the esters being greater than or equal to 10.

[0108] Preferably, for monoalcohol esters, at least one of the alcohol and the acid from which the esters of the present invention are derived is branched.

[0109] Among the monoesters of monoacids and monoalcohols, ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate and isostearyl neopentanoate may be mentioned.

[0110] Esters of C4-C22 dicarboxylic or tricarboxylic acids and C1-C22 alcohols, and esters of unsweetened C4C26 monocarboxylic, dicarboxylic or tricarboxylic acids and dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols may also be used.

[0111] Specifically cited are: diethyl sebacate; isopropyl lauroyl sarcosinate; diisopropyl sebacate; bis(2-ethylhexyl) sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; bis(2-ethylhexyl) adipate; diisostearyl adipate; bis(2-ethylhexyl) maleate; triisopropyl citrate; triisocetyl citrate; triisostearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; neopentyl glycol diheptanoate; and diethylene glycol diisononanoate.

[0112] As ester oils, esters can be used and Petition 870250083866, dated 09 / 17 / 2025, pp. 66 / 97 19 / 44 sugar diesters of C6-C30 fatty acids and, preferably, C12-C22. It is worth remembering that the term "sugar" means hydrocarbon-based compounds containing oxygen, containing various alcohol functions, with or without aldehyde or ketone functions, and comprising at least 4 carbon atoms. These sugars can be monosaccharides, oligosaccharides or polysaccharides.

[0113] Examples of suitable sugars that may be mentioned include sucrose (or sucrose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose, and their derivatives, especially alkyl derivatives, such as methyl derivatives, for example, methylglucose.

[0114] Sugar esters of fatty acids may be specially selected from the group comprising the esters or mixtures of esters of sugars described above and of linear or branched fatty acids, saturated or unsaturated C6-C30, and preferably C12-C22. If unsaturated, these compounds may have from one to three carbon-carbon double bonds, conjugated or non-conjugated.

[0115] Esters according to this variant may also be selected from monoesters, diesters, triesters, tetraesters and polyesters, and mixtures thereof.

[0116] These esters may be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates and arachidonates, or mixtures thereof, such as, especially, mixed esters of oleopalmitate, oleostearate and palmitostearate, as well as pentaerythrityl tetraethyl hexanoate.

[0117] More specifically, monoesters and diesters are used, especially sucrose, glucose or methylglucose monooleates or dioleates, stearates, behenates, oleopalmitates, linoleates, linolenates and Petition 870250083866, dated 09 / 17 / 2025, pp. 67 / 97 20 / 44 oleostearates.

[0118] One example that can be mentioned is the product marketed under the name Glucate® DO by the company Amerchol, which is a methyl glucose dioleate.

[0119] As examples of preferred ester oils, one may mention, for example, diisopropyl adipate, dioctyl adipate, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, isodecyl neopentanoate, myristyl propionate, 2-ethylhexyl 2-ethylhexanoate, 2-ethylhexyl octanoate, 2-ethylhexyl caprylate / caprate, methyl palmitate, ethyl palmitate, isopropyl palmitate, dicaprylyl carbonate, isopropyl lauroyl sarcosinate, isononyl isononanoate, ethylhexyl palmitate, isohexyl laurate, hexyl laurate, isocetyl stearate, isostearate isopropyl, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), pentaerythrityl tetra(2-ethylhexanoate), 2-ethylhexyl succinate, diethyl sebacate and mixtures thereof.

[0120] Examples of artificial triglycerides include, for example, caprylyl glycerides, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprilate, glyceryl tri(caprate / caprylate) and glyceryl tri(caprate / caprylate / linolenate).

[0121] Hydrocarbon oils can be chosen from: - Linear or branched C6-C16 lower alkanes, optionally cyclic. Examples that can be mentioned include hexane, undecane, dodecane, tridecane and isoparaffins, for example, isohexadecane, isododecane and isodecane; and - Linear or branched hydrocarbons containing more than 100 carbon atoms, such as liquid paraffins, liquid petrolatum, hydrogenated polydecenes and polyisobutenes, such as Parleam®, and squalane.

[0122] As preferred examples of hydrocarbon oils, Petition 870250083866, dated 09 / 17 / 2025, pp. 68 / 97 21 / 44 may include, for example, linear or branched hydrocarbons such as isohexadecane, isododecane, squalane, mineral oil (e.g., liquid paraffin), paraffin, petrolatum or petrolatum, naphthalenes and the like; hydrogenated polyisobutene, isoeicosane and decene / butene copolymer; and mixtures thereof.

[0123] The term “fatty” in fatty alcohol means the inclusion of a relatively large number of carbon atoms. Thus, alcohols having 4 or more, preferably 6 or more, and most preferably 12 or more carbon atoms, are encompassed within the scope of fatty alcohols. Fatty alcohol can be saturated or unsaturated. Fatty alcohol can be linear or branched.

[0124] Fatty alcohols may have the structure R-OH, wherein R is chosen from saturated and unsaturated, linear and branched radicals containing from 4 to 40 carbon atoms, preferably from 6 to 30 carbon atoms and, more preferably, from 12 to 20 carbon atoms. In at least one embodiment, R may be chosen from C12-C20 alkyl and C12-C20 alkenyl groups. R may or may not be substituted by at least one hydroxyl group.

[0125] Examples of fatty alcohols include lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, oleyl alcohol, linoleyl alcohol, palmitoleyl alcohol, arachidonic alcohol, erucill alcohol, and mixtures thereof.

[0126] It is preferable that the fatty alcohol be a saturated fatty alcohol.

[0127] Thus, fatty alcohols can be selected from linear or branched C6-C30 alcohols, saturated or unsaturated, preferably linear or branched saturated C6-C30 alcohols, and more Petition 870250083866, dated 09 / 17 / 2025, pp. 69 / 97 22 / 44 preferential linear or branched saturated C12-C20 alcohols.

[0128] The term “saturated fatty alcohol” here means an alcohol with a long saturated aliphatic carbon chain. It is preferable that the saturated fatty alcohol be selected from any linear or branched saturated C6-C30 fatty alcohols. Among the linear or branched saturated C6-C30 fatty alcohols, linear or branched saturated C12-C20 fatty alcohols may be used preferentially. Any linear or branched saturated C16-C20 fatty alcohols may be used even more preferably. Branched C16-C20 fatty alcohols may be used even more preferably.

[0129] Examples of saturated fatty alcohols include lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, and mixtures thereof. In one embodiment, cetyl alcohol, stearyl alcohol, octyldodecanol, hexyldecanol, or a mixture thereof (e.g., cetearyl alcohol), as well as behenyl alcohol, can be used as a saturated fatty alcohol.

[0130] According to at least one embodiment, the fatty alcohol used in the composition according to the present invention is preferably chosen from octyldodecanol, hexyldecanol and mixtures thereof.

[0131] It is preferable to use oils derived from biological resources, such as oils of vegetable or animal origin, and more preferably vegetable oils.

[0132] Vegetable or animal oils may include hydrocarbon oils.

[0133] As preferable examples of plant hydrocarbon oils, linear or branched hydrocarbons such as dodecane, tetradecane, hexadecane, octadecane, may be mentioned. Petition 870250083866, dated 09 / 17 / 2025, pp. 70 / 97 23 / 44 squalane, hemisqualane and similar compounds.

[0134] It is preferable that the (e) oil be selected from vegetable oils, synthetic ester oils and mixtures thereof, and preferably from vegetable oils.

[0135] If present, the (e) oil may be surrounded by a plurality of (a) cationic polymers or a complex of (a) cationic polymers and (c) non-polymeric acid having two or more pKa values ​​or a salt thereof, or the (e) oil may be present in the cavity of a capsule formed by the (a) cationic polymers or the above complex. In other words, the (e) oil may be coated by the (a) cationic polymers or the above complex, or by a capsule formed by the (a) cationic polymers and the above complex encloses the (e) oil in the cavity of the capsule.

[0136] The (e) oil that is surrounded by the (a) cationic polymers or the above complex, or present in the cavity of the capsule formed by the (a) cationic polymers or the above complex, cannot come into direct contact with keratin fibers, such as hair. Thus, even if the (e) oil has a sticky or oily feel during use, the composition according to the present invention would not provide a sticky or oily feel during use.

[0137] The amount of oil(s) in the composition according to the present invention may be 1% by weight or more, preferably 3% by weight or more, and most preferably 5% by weight or more, relative to the total weight of the composition.

[0138] The amount of oil(s) in the composition according to the present invention may be 50% by weight or less, preferably 45% by weight or less, and most preferably 40% by weight or less, relative to the total weight of the composition.

[0139] The quantity of oil(s) in the composition according to Petition 870250083866, dated 09 / 17 / 2025, p. 71 / 97 24 / 44 The present invention may consist of 1% to 50% by weight, preferably 3% to 45% by weight, and more preferably 5% to 40% by weight, relative to the total weight of the composition. Fatty acid

[0140] The composition according to the present invention may comprise (f) at least one fatty acid. If two or more fatty acids are used, they may be the same or different.

[0141] The term “fatty acid” here means a carboxylic acid with a long aliphatic carbon chain.

[0142] The (f) fatty acid has at least 4 carbon atoms, preferably at least 6 carbon atoms and, more preferably, at least 8 carbon atoms. The (f) fatty acid may comprise up to 26 carbon atoms, preferably up to 24 carbon atoms and, more preferably, up to 22 carbon atoms. It is preferable that the (f) fatty acid be selected from C4-C26 fatty acids, more preferably C6-C24 fatty acids and even more preferably C8-C22 fatty acids.

[0143] The (f) fatty acid can be selected from saturated or unsaturated, linear or branched fatty acids. Thus, the (f) fatty acid can be selected from C4-C26 fatty acids, preferably C6-C24, more preferably C8-C22 saturated and unsaturated, linear or branched.

[0144] As for unsaturated fatty acids, linear or branched, either monounsaturated fatty acids, linear or branched, or polyunsaturated fatty acids, linear or branched, may be used. As the unsaturated fraction of unsaturated fatty acids, linear or branched, one may mention a carbon-carbon double bond or a carbon-carbon triple bond. Petition 870250083866, dated 09 / 17 / 2025, pp. 72 / 97 25 / 44

[0145] Examples of saturated fatty acids include caprylic acid (Cs), pelargonic acid (C9), capric acid (C10), lauric acid (C12), myristic acid (C14), pentadecanoic acid (C15), palmitic acid (C16), heptadecanoic acid (C17), stearic acid (C1s), isostearic acid (C1s), nonadecanoic acid (C19), arachidic acid (C20), behenic acid (C22), and lignoceric acid (C24).

[0146] Examples of unsaturated fatty acids include myristoleic acid (C14), palmitoleic acid (C16), oleic acid (C1s), linoleic acid (C1s), linolenic acid (C18), elaidic acid (C1s), arachidonic acid (C20), eicosenoic acid (C20), erucic acid (C22), and nervosa (C24).

[0147] It is preferable that the (f) fatty acid be selected from saturated or unsaturated linear or branched Cs-C1s fatty acids, and more preferably from the group consisting of caprylic acid, capric acid, oleic acid, linoleic acid, stearic acid, isostearic acid and mixtures thereof.

[0148] The (f) fatty acid may be in the form of a free acid or in the form of a salt thereof. As a fatty acid salt, one may mention an inorganic salt, such as an alkali metal salt (a sodium salt, a potassium salt, or similar) and an alkaline earth metal salt (a magnesium salt, a calcium salt, or similar); and an organic salt, such as an ammonium salt (a quaternary ammonium salt or similar) and an amine salt (a triethanolamine salt, a triethylamine salt, or similar). A single type of fatty acid salt or a combination of different types of fatty acid salts may be used. In addition, a combination of one or more fatty acids in the form of a free acid and one or more fatty acids in the form of a salt may be used, in which one or more types of salts may also be used.

[0149] The amount of (f) fatty acid(s) in the composition of Petition 870250083866, dated 09 / 17 / 2025, p. 73 / 97 26 / 44 according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more, and more preferably 0.1% by weight or more, relative to the total weight of the composition. It may be even more preferable that the amount of the (f) fatty acid(s) in the composition according to the present invention be 1% by weight or more, relative to the total weight of the composition.

[0150] On the other hand, the amount of (f) fatty acid(s) in the composition according to the present invention may be 15% by weight or less, preferably 10% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition. It may be even more preferable that the amount of (f) fatty acid(s) in the composition according to the present invention be 4% by weight or less, relative to the total weight of the composition.

[0151] Consequently, the amount of (f) fatty acid(s) in the composition according to the present invention may vary from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight, and more preferably from 0.1% to 5% by weight, relative to the total weight of the composition. It may be even more preferable that the amount of (f) fatty acid(s) in the composition according to the present invention be from 1% to 4% by weight, relative to the total weight of the composition. pH

[0152] The pH of the composition according to the present invention can be from 3 to 9, preferably from 3.3 to 8.5 and, more preferably, from 3.5 to 8.

[0153] At a pH of 3 to 9, the (a) cationic polymer or a complex of the (a) cationic polymer and the (c) non-polymeric acid having two or more pKa values ​​or a salt thereof can be very stable. Thus, the composition according to the present invention can be very stable under the Petition 870250083866, dated 09 / 17 / 2025, pp. 74 / 97 27 / 44 pH from 3 to 9.

[0154] The pH of the composition according to the present invention can be adjusted by adding at least one alkaline agent and / or at least one acid, other than (b) a monovalent nonpolymeric acid or a salt thereof or (c) a nonpolymeric acid having two or more pKa values ​​or a salt thereof. The pH of the composition according to the present invention can also be adjusted by adding at least one buffering agent. Alkaline Agent

[0155] The composition according to the present invention may comprise at least one alkaline agent. Two or more alkaline agents may be used in combination. Thus, a single type of alkaline agent or a combination of different types of alkaline agents may be used.

[0156] The alkaline agent may be an inorganic alkaline agent. It is preferable that the inorganic alkaline agent be selected from the group consisting of ammonia; alkali metal hydroxides; alkaline earth metal hydroxides; alkali metal phosphates and monohydrogen phosphates, such as sodium phosphate or sodium monohydrogen phosphate.

[0157] Examples of inorganic alkali metal hydroxides include sodium hydroxide and potassium hydroxide. Examples of alkaline earth metal hydroxides include calcium hydroxide and magnesium hydroxide. Sodium hydroxide is preferable as an inorganic alkaline agent.

[0158] The alkaline agent may be an organic alkaline agent. It is preferable that the organic alkaline agent be selected from the group consisting of monoamines and their derivatives; diamines and their derivatives; polyamines and their derivatives; basic amino acids and their derivatives; oligomers of basic amino acids and their derivatives; polymers of basic amino acids and their derivatives; urea and its derivatives. Petition 870250083866, dated 09 / 17 / 2025, pp. 75 / 97 28 / 44 of the same; and guanidine and its derivatives.

[0159] Examples of organic alkaline agents include alkanolamines, such as mono-, di-, and tri-ethanolamine and isopropanolamine; urea, guanidine, and their derivatives; basic amino acids, such as ornithine; and diamines, such as those described in the structure below: R1 / R3 'NRN R2 R4 where R denotes an alkylene, such as propylene, optionally substituted with a hydroxyl or a C1-C4 alkyl radical, and R1, R2, R3 and R4 independently denote a hydrogen atom, an alkyl radical or a C1-C4 hydroxyalkyl radical, which can be exemplified by 1,3-propanediamine and its derivatives.

[0160] The alkaline agent(s) may be used in a total amount of 0.01% to 15% by weight, preferably 0.02% to 10% by weight, more preferably 0.03% to 5% by weight, relative to the total weight of the composition, depending on its solubility. ACID

[0161] The composition according to the present invention may comprise at least one acid. Two or more acids may be used in combination. Thus, a single type of acid or a combination of different types of acids may be used.

[0162] As an acid, any inorganic or organic acids may be mentioned, preferably inorganic acids, commonly used in cosmetic products. A monovalent acid and / or a polyvalent acid may be used. A monovalent acid, such as hydrochloric acid (HCl), may be used.

[0163] The acid(s) may be used in a total amount of 0.01% to 15% by weight, preferably 0.02% to 10% by weight, Petition 870250083866, dated 09 / 17 / 2025, pp. 76 / 97 29 / 44 more preferably from 0.03% to 5% by weight, relative to the total weight of the composition, depending on its solubility. Optional ingredient

[0164] The composition according to the present invention may comprise, in addition to the ingredients mentioned above, optional ingredient(s) typically employed in cosmetics, specifically, surfactants / emulsifiers, hydrophilic or lipophilic thickeners, derived from, for example, synthetic polymers other than (a) cationic polymer; volatile or non-volatile organic solvents; anionic polymers; amphoteric polymers; nonionic polymers, such as beta-glucan; silicones and silicone derivatives other than (e) oil; natural extracts derived from animals or plants other than (a) cationic polymer or (e) oil; waxes; and the like, within a range that does not impair the effects of the present invention.

[0165] The composition according to the present invention may comprise the above optional ingredient(s) in an amount of 0.01% to 30% by weight, preferably 0.05% to 20% by weight and, more preferably, 0.1% to 10% by weight, relative to the total weight of the composition.

[0166] The amount of synthetic surfactant(s) / emulsifier(s) and / or thickener(s) and / or organic solvent(s) in the composition according to the present invention may be 1% by weight or less, preferably 0.1% by weight or less, and more preferably 0.01% by weight or less, relative to the total weight of the composition. It is particularly preferable that the composition according to the present invention does not include synthetic surfactant / emulsifier, thickener or organic solvent. Preparation

[0167] The composition according to the present invention can be prepared by mixing the essential ingredient(s) as explained. Petition 870250083866, dated 09 / 17 / 2025, pp. 77 / 97 30 / 44 above, and the optional ingredient(s), if needed, as explained above.

[0168] The method and means for mixing the above essential and optional ingredients are not limited. Any conventional method and means may be used to mix the above essential and optional ingredients to prepare the composition according to the present invention.

[0169] The composition according to the present invention can be prepared by simple or easy mixing with a conventional mixing medium, such as a stirrer and a homogenizer. Furthermore, heating may not be necessary. Therefore, the process of preparing the composition according to the present invention can be environmentally friendly. Cosmetic Application

[0170] The composition according to the present invention can be intended for use as a cosmetic composition.

[0171] The cosmetic composition according to the present invention can be used for application to keratin fibers. Keratin fibers herein means fibers containing keratin as the main constituent element, and examples thereof include hair and the like. It is preferable that the cosmetic composition according to the present invention be used in a cosmetic process for keratin fibers, in particular for hair.

[0172] It is preferable that the cosmetic composition according to the present invention be a cosmetic composition for keratin fibers, such as hair, and more preferably a cosmetic composition for hair care. Form

[0173] The composition according to the present invention may be present in any form. Petition 870250083866, dated 09 / 17 / 2025, pp. 78 / 97 31 / 44

[0174] If the composition according to the present invention includes (e) oil, the (e) oil can form greasy phases, the (d) water can form an aqueous phase, and the greasy phases can be dispersed in the aqueous phase. Thus, the aqueous phase can function as a continuous phase and the greasy phase can function as a dispersed phase. In other words, the composition according to the present invention can be in the form of an O / W dispersion, such as an O / W emulsion. If the composition according to the present invention is of the O / W type, it can provide a sensation of freshness due to the (d) water that forms the external phase thereof. Mechanism

[0175] Figure 1 presents schematic drawings showing the behavior of (a) cationic polymers around a greasy phase, if present, such as an oil droplet, dispersed in an aqueous phase, and examples of hydrophobization of (a) cationic polymer, in one embodiment of the present invention.

[0176] A plurality of (a) cationic polymers or a complex of (a) cationic polymers and (c) a non-polymeric acid having two or more pKa values, or a salt thereof, may be present at the interface between the fat phase and the aqueous phase. Thus, the (a) cationic polymers or the above complex may form an emulsion without the aid of any conventional surfactant or emulsifier. The emulsion formed by the (a) cationic polymer or the above complex may be similar to a so-called Pickering emulsion.

[0177] Alternatively, a plurality of the (a) cationic polymers or the above complex may form a capsule with a cavity. The (e) oil may be present in the cavity. In other words, the (e) oil may be incorporated into the capsule. The capsule wall may be composed of a continuous layer or film formed from the (a) cationic polymers or the Petition 870250083866, dated 09 / 17 / 2025, pp. 79 / 97 32 / 44 complex above. Without limiting ourselves to theory, it is believed that the (a) cationic polymers or the complex above can rearrange at the interface of the (e) oil and the (d) water to spontaneously form a capsule with a cavity to enclose the (e) oil. For example, a continuous aqueous phase comprising the (d) water and dispersed phases comprising the (e) oil in the capsule can form an O / W emulsion that may also be similar to the so-called Pickering emulsion.

[0178] The fatty phase may comprise the (f) fatty acid, if present. The (f) fatty acid in the fatty phase may hydrophobize the (a) cationic polymer in situ. Figure 1 shows a schematic of hydrophobization of the (a) cationic polymer by the (f) fatty acid.

[0179] Figure 1A shows a schematic drawing that shows the behavior of (a) cationic polymers around a fatty phase, if present, as an oil droplet, dispersed in an aqueous phase, in the case where the fatty phase does not include (f) fatty acid.

[0180] In Figure 1A, the (a) cationic polymer may exhibit insufficient hydrophobicity. Therefore, the affinity between the (a) cationic polymer and the grease phase, including the (e) oil, may be limited. Thus, the emulsification of the grease phase in the aqueous phase may be less stable.

[0181] On the other hand, Figure 1B shows a schematic drawing that shows the behavior of (a) cationic polymers around a fatty phase, like an oil droplet, dispersed in an aqueous phase, in the case where the fatty phase includes (f) fatty acid.

[0182] In Figure 1B, the carboxylic group in the (f) fatty acid in the fat phase can ionically interact with the cationic or cationizable group, such as an ammonium group or an amino group, in the (a) cationic polymer, as shown in Figure 1C. Consequently, the (a) cationic polymer is ionically hydrophobized and can exhibit sufficient hydrophobicity. Therefore, the affinity between the (a) cationic polymer and the fat phase, including the (e) oil, is increased. Petition 870250083866, dated 09 / 17 / 2025, pp. 80 / 97 33 / 44 Thus, the emulsification of the fat phase in the aqueous phase is stable. Film

[0183] The composition according to the present invention can be used for the easy preparation of a film.

[0184] Thus, the present invention may also refer to a process for preparing a film, preferably a cosmetic film, optionally with a thickness preferably greater than 0.5 µm, more preferably 1.0 µm or more, and even more preferably 1.5 µm or more, comprising: Apply the composition according to the present invention to keratin fibers, such as hair; and dry the composition.

[0185] The upper limit of the film thickness according to the present invention is not limited. Thus, for example, the film thickness according to the present invention may be 1 mm or less, preferably 500 µm or less, more preferably 300 µm or less, and even more preferably 100 µm or less.

[0186] As the process for preparing a film according to the present invention includes the steps of applying the composition according to the present invention to keratin fibers, such as hair, and drying the composition, the process according to the present invention does not require any centrifugation or spray coating and, therefore, it is possible to easily prepare even a relatively thick film. Thus, the process for preparing a film according to the present invention can prepare a relatively thick film without the need for special equipment, such as centrifugation and spray coating machines.

[0187] Even though the film according to the present invention is relatively thick, it is still thin and can be transparent and therefore can Petition 870250083866, dated 09 / 17 / 2025, pp. 81 / 97 34 / 44 not being easily perceptible. Thus, the film according to the present invention can preferably be used as a cosmetic film.

[0188] The present invention may also refer to: (1) A film, preferably a cosmetic film, optionally with a thickness preferably greater than 0.5 µm, more preferably 1.0 µm or more, and even more preferably 1.5 µm or more, prepared by a process comprising: Apply the composition according to the present invention to keratin fibers, such as hair; and dry the composition; and (2) A film, preferably a cosmetic film, optionally with a thickness preferably greater than 0.5 µm, more preferably 1.0 µm or more, and even more preferably 1.5 µm or more, comprising: (a) at least one cationic polymer selected from chitosans with a molecular weight greater than 20,000; (b) at least one monovalent nonpolymeric acid or a salt thereof; and (c) at least one nonpolymeric acid having two or more pKa values ​​or a salt thereof.

[0189] The film may also include (e) at least one oil and / or (f) at least one fatty acid.

[0190] The above explanations regarding (a) cationic polymer, (b) monovalent nonpolymeric acid or a salt thereof, and (c) nonpolymeric acid having two or more pKa values ​​or a salt thereof, as well as optional ingredients such as (e) oil and (f) fatty acid, can be applied to the above films (1) and (2). Petition 870250083866, dated 09 / 17 / 2025, pp. 82 / 97 35 / 44

[0191] It is preferable that the film according to the present invention be hydrophobic.

[0192] The term “hydrophobic” in this description means that the solubility of the film in water (preferably with a volume of 1 liter) at a temperature of 20 to 40 °C, preferably 25 to 40 °C and, more preferably, 30 to 40 °C is less than 10% by weight, preferably less than 5% by weight, more preferably less than 1% by weight and, even more preferably, less than 0.1% by weight, relative to the total weight of the film. It is more preferably that the film is not soluble in water.

[0193] If the film according to the present invention is hydrophobic, it can exhibit water-resistant properties and therefore can remain on keratin fibers, such as hair, even if the surface of the keratin fibers is wet due to, for example, sweat and rain. Thus, when the film according to the present invention provides some cosmetic effect, this can last a long time.

[0194] The film according to the present invention may comprise at least one layer of biocompatible and / or biodegradable polymer. Two or more biocompatible and / or biodegradable polymers may be used in combination. Thus, a single type of biocompatible and / or biodegradable polymer or a combination of different types of biocompatible and / or biodegradable polymers may be used.

[0195] The term “biocompatible” polymer in this descriptive report means that the polymer does not exhibit excessive interaction between the polymer and the cells of the living body, including the skin, and that the polymer is not recognized by the living body as a foreign material.

[0196] The term “biodegradable” polymer in this descriptive report means that the polymer can be degraded or decomposed in a living body due to, for example, the metabolism of the living body itself. Petition 870250083866, dated 09 / 17 / 2025, pp. 83 / 97 36 / 44 or to the metabolism of microorganisms that may be present in the living body. In addition, the biodegradable polymer can be degraded by hydrolysis.

[0197] If the film according to the present invention includes a biocompatible and / or biodegradable polymer, for example, it may be less irritating or non-irritating to the scalp and / or may not contaminate the environment.

[0198] In fact, the film according to the present invention may include (a) at least one cationic polymer selected from chitosans, which are biodegradable polymers.

[0199] The film according to the present invention can be used for cosmetic treatments of keratin fibers, such as hair. Cosmetic Process and Use

[0200] The present invention also relates to: A cosmetic process for keratin fibers, such as hair, comprising: applying the composition according to the present invention to the keratin fibers; and drying the composition to form a cosmetic film on the keratin fibers; or using the composition according to the present invention to prepare a cosmetic film on keratin fibers, such as hair.

[0201] The cosmetic process here means a non-therapeutic cosmetic method for caring for and / or coating the surface of keratin fibers, such as hair.

[0202] The film of the present invention can provide keratin fibers, such as hair, with a good straightening and shape-restoring effect, as explained above.

[0203] In addition, the aforementioned cosmetic film can immediately protect keratin fibers, such as hair, by covering the Petition 870250083866, dated 09 / 17 / 2025, pp. 84 / 97 37 / 44 surface of keratin fibers and protecting them, as a barrier, against environmental aggressions, such as pollutants, contaminants and the like.

[0204] The above cosmetic effects can be adjusted or controlled by altering the chemical composition, thickness and / or surface roughness of the above cosmetic film.

[0205] If the above cosmetic film includes at least one additional cosmetic active ingredient besides the oil, the cosmetic film may have cosmetic effects provided by the additional cosmetic active ingredient(s). For example, if the cosmetic film includes at least one cosmetic active ingredient, such as a deodorant agent, the cosmetic film may control odors in keratin fibers, such as hair.

[0206] The present invention may also relate to the use of (a) at least one cationic polymer selected from chitosans with a molecular weight greater than 20,000, in a composition for the treatment of keratin fibers, such as hair, comprising: (b) at least one monovalent nonpolymeric acid or a salt thereof; and (c) at least one nonpolymeric acid having two or more pKa values ​​or a salt thereof, in order to improve the alignment and shape recovery of keratin fibers.

[0207] The above composition may also include (e) at least one oil and / or (f) at least one fatty acid.

[0208] The above explanations regarding (a) cationic polymer, (b) monovalent nonpolymeric acid or a salt thereof, and (c) nonpolymeric acid having two or more pKa values ​​or a salt thereof, as well as optional ingredients such as (d) water, (e) oil and (f) fatty acid, may be applied to those in the above usage. Petition 870250083866, dated 09 / 17 / 2025, pp. 85 / 97 38 / 44 Examples

[0209] The present invention will be described in more detail by means of examples. However, these should not be interpreted as limiting the scope of the present invention. Examples 1 to 31 and Comparative Examples 1 to 10 Preparations

[0210] Each of the compositions according to Examples 1 to 31 and Comparative Examples 1 to 10 was prepared by mixing the ingredients shown in Tables 1 to 8. The numerical values ​​for the quantities of ingredients in Tables 1 to 8 are all based on “% by weight” as raw materials.

[0211] The preparation details are as follows.

[0212] First, chitosan was added to water. Then, lactic acid was added to solubilize the chitosan (since, for Comparative Examples 6 to 10, lactic acid was not used, as the low molecular weight chitosan used there was soluble in water without the aid of lactic acid). Next, a crosslinking agent (phosphoric acid, diphosphoric acid, citric acid, or tartaric acid) was added slowly. Then, fatty acid (oleic acid, isostearic acid, linoleic acid, or erucic acid) was added with an oil (corn oil) to be emulsified and mixed at room temperature. Table 1 Ex. 1 Ex. 2 Ex. 3 Ex. 4 Ex. 5 Ex. 6 Ex. 7 Ex. Comp. 1 Ex. Comp. 2 Water qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 Chitosan (MW > 20,000) 2.0 2.0 2.0 1.0 1.0 1.0 1.0 2.0 1.0 Lactic acid 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Phosphoric acid 0.2 0.4 0.6 0.1 0.2 0.3 0.4 - - Oleic acid 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 Petition 870250083866, dated 09 / 17 / 2025, pp. 86 / 97 39 / 44 Ex. 1 Ex. 2 Ex. 3 Ex. 4 Ex. 5 Ex. 6 Ex. 7 Ex. Comp. 1 Ex. Comp. 2 Corn Oil 5 5 5 5 5 5 5 5 5 Crosslinker: Phosphoric Acid Fatty acid: Oleic acid Table 2 Ex. 8 Ex. 9 Ex. 10 Ex. 11 Ex. 12 Ex. 13 Water qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 Chitosan (MW > 20,000) 2.0 2.0 2.0 1.0 1.0 1.0 Lactic acid 1.0 1.0 1.0 1.0 1.0 1.0 Diphosphoric acid 0.1 0.2 0.3 0.1 0.2 0.3 Oleic acid 1.7 1.7 1.7 1.7 1.7 1.7 Corn oil 5 5 5 5 5 5 Crosslinker: Diphosphoric Acid Fatty acid: Oleic acid Table 3 Ex. 14 Ex. 15 Ex. 16 Water qsp 100 qsp 100 qsp 100 Chitosan (MW > 20,000) 2.0 2.0 2.0 Lactic acid 1.0 1.0 1.0 Citric acid 0.1 0.2 0.3 Oleic acid 1.7 1.7 1.7 Corn oil 5 5 5 Crosslinking agent: Citric acid Fatty acid: Oleic acid Table 4 Ex. 17 Ex. 18 Ex. 19 Water qsp 100 qsp 100 qsp 100 Chitosan (MW > 20,000) 2.0 2.0 2.0 Lactic acid 1.0 1.0 1.0 Tartaric acid 0.1 0.2 0.3 Oleic acid 1.7 1.7 1.7 Corn oil 5 5 5 Crosslinking agent: Tartaric acid Fatty acid: Oleic acid Petition 870250083866, dated 09 / 17 / 2025, pages 87 / 97 40 / 44 Table 5 Ex. 20 Ex. 21 Ex. 22 Ex. 23 Ex. Comp. 3 Water qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 Chitosan (MW > 20,000) 2.0 2.0 2.0 2.0 2.0 Lactic acid 1.0 1.0 1.0 1.0 1.0 Phosphoric acid 0.1 0.2 0.4 0.6 - Isostearic acid 1.7 1.7 1.7 1.7 1.7 Corn oil 5 5 5 5 5 Crosslinker: Phosphoric Acid Fatty acid: Isostearic acid Table 6 Ex. 24 Ex. 25 Ex. 26 Ex. 27 Ex. Comp. 4 Water qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 Chitosan (MW > 20,000) 2.0 2.0 2.0 2.0 2.0 Lactic acid 1.0 1.0 1.0 1.0 1.0 Phosphoric acid 0.1 0.2 0.4 0.6 - Linoleic acid 1.7 1.7 1.7 1.7 1.7 Corn oil 5 5 5 5 5 Crosslinker: Phosphoric Acid Fatty acid: Linoleic acid Table 7 Ex. 28 Ex. 29 Ex. 30 Ex. 31 Ex. Comp. 5 Water qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 Chitosan (MW > 20,000) 2.0 2.0 2.0 2.0 2.0 Lactic acid 1.0 1.0 1.0 1.0 1.0 Phosphoric acid 0.1 0.2 0.4 0.6 - Erucic acid 1.7 1.7 1.7 1.7 1.7 Corn oil 5 5 5 5 5 Crosslinker: Phosphoric Acid Fatty acid: Erucic acid Table 8 Ex. 1 Ex. Comp. 6 Ex. Comp. 7 Ex. Comp. 8 Ex. Comp. 9 Ex. Comp. 10 Water qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 qsp 100 Chitosan 2.0 - - - - - Petition 870250083866, dated 09 / 17 / 2025, pp. 88 / 97 41 / 44 Ex. 1 Ex. Comp. 6 Ex. Comp. 7 Ex. Comp. 8 Ex. Comp. 9 Ex. Comp. 10 (MW > 20,000) Chitosan (MW < 5,000) - 2.0 2.0 2.0 2.0 2.0 Lactic acid 1.0 - - - - - Phosphoric acid 0.2 0.1 0.2 0.4 0.6 - Oleic acid 1.7 1.7 1.7 1.7 1.7 1.7 Corn oil 5 5 5 5 5 5 Crosslinker: Phosphoric Acid Fatty acid: Oleic Acid Reviews Hair Alignment

[0213] 0.15g of each of the compositions according to Examples 1 to 31 and Comparative Examples 1 to 10 were applied to 2.7g of hair and dried with a hair dryer. The hair alignment of the dried hair was visually observed and evaluated according to the following criteria: Very good: Much better than the controller; Good: Better than the controller; Bad: Same as the controller.

[0214] The results are presented in Tables 9 to 14 below. Getting Back in Shape

[0215] 0.15 g of each of the compositions according to Examples 1 to 31 and Comparative Examples 1 to 10 were applied to 2.7 g of hair and dried with a hair dryer. The dried hair was spread using a comb and the recovery of shape, i.e., how much the hair was aligned back by manual touch, was visually observed and evaluated according to the following criteria: Very good: Much better than the controller; Petition 870250083866, dated 09 / 17 / 2025, pp. 89 / 97 42 / 44 Good: Better than the controller; Bad: Same as the controller.

[0216] The results are presented in Tables 9 to 14 below. Table 9 Ex. 1 Ex. 2 Ex. 3 Ex. 8 Ex. 9 Ex. 10 Ex. 14 Ex. 15 Ex. 16 Ex. 17 Ex. 18 Ex. 19 Ex. Comp. 1 Hair Alignment Very good Good Good Good Good Good Good Good Good Good Good Control Shape Recovery Good Good Good Good Good Good Good Very good Good Good Good Control High Molecular Weight Chitosan: 2% by weight Fatty Acid: Oleic Acid Table 10 Ex. 4 Ex. 5 Ex. 6 Ex. 7 Ex. 11 Ex. 12 Ex. 13 Ex. Comp. 2 Hair Alignment Good Good Good Good Good Good Good Control Shape Recovery Good Good Good Good Good Good Good Control High Molecular Weight Chitosan: 1% by weight Fatty Acid: Oleic Acid Table 11 Ex. 20 Ex. 21 Ex. 22 Ex. 23 Ex. Comp. 3 Hair Alignment Good Good Good Good Control Shape Recovery Good Good Good Good Control High Molecular Weight Chitosan: 2% by weight Fatty Acid: Isostearic Acid Table 12 Ex. 24 Ex. 25 Ex. 26 Ex. 27 Ex. Comp. 4 Hair Alignment Good Good Good Very good Control Shape Recovery Good Good Good Good Control High Molecular Weight Chitosan: 2% by weight. Fatty Acid: Linoleic Acid. Petition 870250083866, dated 09 / 17 / 2025, pp. 90 / 97 43 / 44 Table 13 Ex. 28 Ex. 29 Ex. 30 Ex. 31 Ex. Comp. 5 Hair Alignment Good Good Good Good Control Shape Recovery Good Good Good Good Control High Molecular Weight Chitosan: 2% by weight Fatty Acid: Erucic Acid Table 14 Ex. 1 Ex. Comp. 6 Ex. Comp. 7 Ex. Comp. 8 Ex. Comp. 9 Ex. Comp. 10 Hair Alignment Very good Bad Bad Bad Bad Control Shape Recovery Good Bad Bad Bad Bad Control High Molecular Weight Chitosan: 2% by weight Low Molecular Weight Chitosan: 2% by weight Fatty Acid: Oleic Acid Summary

[0217] According to Tables 9 and 10, it can be seen that the composition according to the present invention, including a varied crosslinker, showed good or very good effects in relation to capillary alignment and shape recovery, compared with the composition without a crosslinker.

[0218] According to Tables 11 to 13, it can be seen that the composition according to the present invention, including a varied fatty acid, showed good effects in relation to capillary alignment and shape recovery, compared to the composition without crosslinker.

[0219] According to Table 14, it can be seen that the use of low molecular weight chitosan, with a molecular weight of less than 5,000, resulted in poor effects regarding hair alignment and shape recovery, compared to the composition without crosslinker. The use of high molecular weight chitosan, with a molecular weight greater than 20,000, resulted in very good effects regarding hair alignment and shape recovery. Petition 870250083866, dated 09 / 17 / 2025, pp. 91 / 97 44 / 44 compared to the composition using low molecular weight chitosan, with a molecular weight of less than 5,000.

[0220] In addition, the composition according to the present invention includes environmentally friendly ingredient(s). Petition 870250083866, dated 09 / 17 / 2025, pp. 92 / 97

Claims

1 / 3 Claims 1. COMPOSITION, preferably a cosmetic composition, and more preferably a cosmetic composition for keratin fibers, such as hair, characterized by comprising: (a) at least one cationic polymer; (b) at least one monovalent non-polymeric acid or a salt thereof; and (c) at least one non-polymeric acid having two or more pKa values ​​or a salt thereof, wherein the (a) cationic polymer is selected from chitosans with a molecular weight greater than 20,000.

2. COMPOSITION, according to claim 1, characterized in that the amount of (a) cationic polymer(s) in the composition is from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight, and more preferably from 0.1% to 5% by weight, relative to the total weight of the composition.

3. COMPOSITION, according to any one of claims 1 to 2, characterized in that (b) the monovalent nonpolymeric acid or a salt thereof is a monovalent nonpolymeric organic acid or a salt thereof, preferably a monovalent carboxylic acid or a salt thereof, and more preferably lactic acid or a salt thereof.

4. COMPOSITION, according to any one of claims 1 to 3, characterized in that the amount of (b) monovalent non-polymeric acid(s) or salt(s) thereof in the composition is from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight, and more preferably from 0.1% to 5% by weight, relative to the total weight of the composition. Petition 870250083866, dated 17 / 09 / 2025, p. 93 / 97 2 / 3 5. COMPOSITION, according to any one of claims 1 to 4, characterized in that (c) a non-polymeric acid having two or more pKa values ​​or a salt thereof being an organic acid or a salt thereof, preferably a hydrophilic or water-soluble organic acid having at least one phosphoric acid group and / or at least two carboxylic acid groups, or salts thereof, and more preferably phosphoric acid, diphosphoric acid, citric acid, tartaric acid or salts thereof.

6. COMPOSITION, according to any one of claims 1 to 5, characterized in that the amount of (c) non-polymeric acid(s) having two or more pKa values ​​or salt(s) thereof in the composition is from 0.001% to 10% by weight, preferably from 0.003% to 5% by weight, and more preferably from 0.005% to 1% by weight, relative to the total weight of the composition.

7. COMPOSITION, according to any one of claims 1 to 6, characterized in that the composition further comprises (d) water, preferably in an amount of 50% to 99% by weight, more preferably 60% to 97% by weight and even more preferably 70% to 95% by weight, relative to the total weight of the composition.

8. COMPOSITION, according to any one of claims 1 to 7, characterized in that the composition further comprises (and) at least one oil.

9. COMPOSITION, according to claim 8, characterized in that (e) the oil is selected from vegetable oils, synthetic ester oils and mixtures thereof, and preferably from vegetable oils.

10. COMPOSITION, according to any of claims 8 to 9, characterized in that the amount of the oil(s) in the composition is from 1% to 50% by weight, preferably from 3% to 45% by weight, and more preferably from 5% to 40% by weight, in relation to the total weight of the composition.

11. COMPOSITION, according to any one of claims 8 to 10, characterized in that the composition further comprises (f) at least one fatty acid.

12. COMPOSITION, according to claim 11, characterized in that (f) the fatty acid is selected from saturated and unsaturated fatty acids, linear or branched, C4-C26, preferably C6-C24, more preferably C8-C22.

13. COMPOSITION, according to any one of claims 11 to 12, characterized in that (a) the cationic polymer is hydrophobized by (f) the fatty acid.

14. COMPOSITION, according to any one of claims 11 to 13, characterized in that the amount of (f) fatty acid(s) in the composition is from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight and, more preferably, from 0.1% to 5% by weight, relative to the total weight of the composition.

15. COSMETIC PROCESS FOR KERATIN FIBERS, such as hair, characterized by comprising: applying to the keratin fibers the composition, as defined in any one of claims 1 to 14; and drying the composition to form a cosmetic film on the keratin fibers. Petition 870250083866, dated 09 / 17 / 2025, pp. 95 / 97

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