Compositions containing chitosan and salicylic acid or derivatives thereof

Abstract

To provide stable compositions containing oil and water with reduced or no surfactants while containing environmentally compatible ingredients.SOLUTION: The present invention relates to a composition containing: (a) at least one cationic polymer selected from chitosans; (b) at least one compound selected from salicylic acid and derivatives thereof; (c) water; and (d) oil, which is free of surfactants or contains at least one surfactant in an amount of 1 wt.% or less, preferably 0.1 wt.% or less, more preferably 0.01 wt.% or less, based on the total weight of the composition. The composition according to the present invention contains no surfactants or only small amounts of surfactants, but is stable even when containing oil and water, and can contain at least one environmentally compatible ingredient.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a composition comprising chitosan and salicylic acid or a derivative thereof, and a cosmetic method using said composition. [Background technology]

[0002] Environmentally compatible cosmetic formulations, which are designed and developed with environmental issues in mind, have become a major goal to meet global challenges.

[0003] It is therefore essential to propose more sustainable compositions, preparation methods and ingredients to address these environmental issues.

[0004] In this context, it is important to develop new cosmetic compositions that have a better carbon footprint, in particular by promoting the use of renewable raw materials and / or materials with a good natural index and / or materials of natural origin, more particularly materials of plant origin, while reducing the use of compounds of petrochemical origin.

[0005] As is widely known, certain cosmetic compositions and any other compositions exist in the form of emulsions, including but not limited to W / O, O / W, W / O / W and O / W / O. In most cases, emulsifiers or surfactants are necessary to stabilize the emulsion form. However, some surfactants may have potential problems, such as skin irritation. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] WO03 / 068824 Summary of the Invention [Problem to be solved by the invention]

[0007] There is a need for stable oil and water containing compositions with reduced or no surfactants while including environmentally compatible ingredients.

[0008] It is therefore a first object of the present invention to provide a stable composition comprising oil and water, even when the composition contains no or only a small amount of surfactant.

[0009] Additionally, a second object of the present invention is to provide a composition that can include at least one environmentally compatible ingredient. [Means for solving the problem]

[0010] The above object of the present invention is to (a) at least one cationic polymer selected from chitosans; (b) at least one compound selected from salicylic acid and its derivatives; (c) Water, and (d) oil A composition, preferably a cosmetic composition, more preferably a cosmetic composition for keratinous materials such as the skin, comprising: This can be achieved by a composition that is free of surfactants or that contains at least one surfactant in an amount of 1% by weight or less, preferably 0.1% by weight or less, more preferably 0.01% by weight or less, relative to the total weight of the composition.

[0011] (a) The cationic polymer may be selected from chitosans having a molecular weight of more than 20,000.

[0012] The amount of the (a) cationic polymer in the composition according to the present invention may be 0.01 to 15% by mass, preferably 0.05 to 10% by mass, and more preferably 0.1 to 5% by mass, relative to the total mass of the composition.

[0013] Derivatives of salicylic acid are represented by the formula (I):

[0014] [ka]

[0015] [In the formula, R1 represents hydrogen or a saturated linear, branched or cyclic aliphatic hydrocarbon group, or an alkoxy, ester or ketoxy group, or an unsaturated group having at least one conjugated or non-conjugated double bond, which may contain from 1 to 22 carbon atoms and which may optionally be substituted with at least one substituent selected from halogen atoms, trifluoromethyl groups, hydroxyl groups in free form or esterified by an acid having from 1 to 6 carbon atoms, R2 is a hydroxyl group or a group of formula (II):

[0016] [ka]

[0017] (In the formula, R4 represents a saturated aliphatic hydrocarbon group or an alkenyl group having 1 to 18 carbon atoms. represents an ester group of the formula R3 represents hydrogen or a saturated or unsaturated, linear or branched aliphatic hydrocarbon group having 1 to 30 carbon atoms and optionally containing one or more of the above-mentioned substituents. The compound can be selected from compounds represented by:

[0018] The amount of the (b) compound in the composition according to the present invention may be 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, and more preferably 0.1% by mass to 5% by mass, relative to the total mass of the composition.

[0019] The amount of (c) water in the composition according to the present invention may be 50% by mass to 99% by mass, preferably 60% by mass to 97% by mass, and more preferably 70% by mass to 95% by mass, based on the total mass of the composition.

[0020] (d) The oil may be selected from vegetable oils, synthetic ester oils, and mixtures thereof, preferably vegetable oils.

[0021] The amount of (d) oil in the composition according to the present invention may be from 1 mass % to 50 mass %, preferably from 3 mass % to 45 mass %, more preferably from 5 mass % to 40 mass %, relative to the total mass of the composition.

[0022] The composition according to the present invention may further comprise (e) at least one monovalent non-polymeric acid or a salt thereof, preferably one monovalent non-polymeric organic acid or a salt thereof, more preferably one monovalent carboxylic acid or a salt thereof, and even more preferably lactic acid or a salt thereof.

[0023] The amount of (e) the monovalent non-polymeric acid or its salt in the composition according to the present invention may be 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, and more preferably 0.1% by mass to 5% by mass, relative to the total mass of the composition.

[0024] The composition according to the present invention may further comprise (f) at least one fatty acid.

[0025] (f) Fatty acids are C4 to C 26 , preferably C6 to C 24 , more preferably C8 to C 22 They may be chosen from saturated and unsaturated, straight-chain or branched fatty acids.

[0026] The amount of the (f) fatty acid in the composition according to the present invention may be 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, and more preferably 0.1% by mass to 5% by mass, relative to the total mass of the composition.

[0027] The pH of the composition according to the present invention may be 3-8, preferably 3-7.5, and more preferably 3-7.

[0028] The present invention also provides a cosmetic method for keratinous materials, such as the skin, comprising the steps of: applying a composition according to the invention to keratinous materials; drying the composition to form a cosmetic film on the keratinous material; The present invention also relates to a method, comprising: DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] After extensive investigation, the inventors have discovered that it is possible to provide a stable composition that includes oil and water, and that can include at least one environmentally compatible ingredient, even when the composition does not include any surfactant or includes only a small amount of surfactant.

[0030] Therefore, the composition according to the invention (a) at least one cationic polymer selected from chitosans; (b) at least one compound selected from salicylic acid and its derivatives; (c) Water, and (d) oil Including, The composition contains no surfactant or at least one surfactant in an amount of not more than 1% by weight, preferably not more than 0.1% by weight, more preferably not more than 0.01% by weight, relative to the total weight of the composition.

[0031] The compositions according to the invention contain no or only small amounts of surfactants, yet are stable with oil and water.

[0032] (a) A cationic polymer selected from chitosans can form a complex with (b) a compound selected from salicylic acid and its derivatives through ionic interaction between the amino group of (a) the cationic polymer and the carboxy group of (b) the compound.

[0033] The above ionic interaction can strengthen the affinity between (a) cationic polymer and (d) oil. Therefore, the above complex can effectively exist on the interface between (d) oil and (c) water and act like a polymer surfactant. Therefore, the distribution of (d) oil in (c) water or (c) water in (d) oil can be stable.

[0034] Since chitosans can be obtained from natural sources, (a) the cationic polymer is an environmentally compatible component. Therefore, the composition according to the present invention can include an environmentally compatible component.

[0035] In addition, components (b) to (d) as well as components (e) and (f) can originate from renewable and / or biodegradable materials, such as plants, and thus the composition according to the invention can be environmentally compatible.

[0036] Since the composition according to the present invention does not contain any surfactant or contains only a small amount of surfactant, the composition according to the present invention can be less irritating.

[0037] The composition according to the present invention may comprise (c) an aqueous phase comprising water.

[0038] The composition according to the invention may comprise (d) a fatty phase comprising an oil. When the composition according to the invention comprises (f) at least one fatty acid, the (f) fatty acid may be present in the fatty phase.

[0039] The fatty phase may be dispersed in the aqueous phase, in which case the fatty phase is the discontinuous phase while the aqueous phase is the continuous phase, so that the composition according to the invention may be in the form of O / W (oil-in-water).

[0040] The composition according to the present invention is stable even when it contains a relatively large amount of (d) oil. Therefore, the composition according to the present invention can contain a relatively large amount of (d) oil.

[0041] The composition according to the present invention is stable for a long period of time, i.e., phase separation of the composition according to the present invention can be prevented for a long period of time.

[0042] Therefore, the composition according to the present invention can be stored for a long period of time.

[0043] The present invention will now be described in more detail.

[0044] [Composition] (cationic polymer) The composition according to the present invention comprises (a) at least one cationic polymer.

[0045] (a) There is no limitation on the type of cationic polymer. Two or more different types of cationic polymers may be used in combination. Therefore, a single type of cationic polymer or a combination of different types of cationic polymers may be used.

[0046] The cationic polymer has a positive charge density. The charge density of the (a) cationic polymer may be 0.01 meq / g to 20 meq / g, preferably 0.05 to 15 meq / g, and more preferably 0.1 to 10 meq / g.

[0047] (a) The cationic polymer is selected from chitosans.

[0048] The chitosan preferably has a molecular weight (Da) of more than 20,000, preferably more than 50,000, more preferably more than 80,000. In other words, the (a) cationic polymer is a high molecular weight chitosan.

[0049] The molecular weight (Da) of chitosan may be less than 1,000,000, preferably less than 500,000, more preferably less than 300,000.

[0050] Therefore, the molecular weight (Da) of chitosan may be greater than 20,000 and less than 1,000,000, preferably greater than 50,000 and less than 500,000, more preferably greater than 80,000 and less than 300,000.

[0051] Unless otherwise defined in the description, "molecular weight" means weight average molecular weight. Molecular weight can be measured or determined, for example, by gel permeation chromatography according to ASTM D5296-19.

[0052] Chitosan is very rare in nature: it has only been reported in the exoskeletons of certain insects, such as termite queens, and in the cell walls of a certain class of fungi, the Zygomycetes.

[0053] Chitosan can be obtained by deacetylation of chitin, a polysaccharide composed of several N-acetyl-D-glucosamine units linked together by β-type bonds (1,4).

[0054] The idealized chemical structure of chitosan is a sequence of β-D-glucosamine monomers linked by glycosidic bonds (1→4).

[0055] "Chitosan" according to the present invention means any copolymer formed from the building blocks 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%, preferably less than 50%. Chitosan consists of glucosamine sugar units (deacetylated units) and N-acetyl-D-glucosamine units (acetylated units) linked together by β-type bonds (1,4), and is a polymer of the poly(N-acetyl-D-glucosamine)-poly(D-glucosamine) type.

[0056] More preferably, the degree of acetylation of chitosan is not more than 40%, preferably not more than 35%, preferably not more than 25%, preferably not more than 15%, preferably not more than 10%.

[0057] 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 titration with a strong base.

[0058] The chitosan of the present invention is preferably a polysaccharide prepared from a fungal source, in particular, chitosan is extracted and purified from safe and abundant food or biotechnological fungal sources such as mushroom (Agaricus bisporus) or Aspergillus niger).

[0059] The chitosan of the present invention is preferably derived from the mycelium of fungi of the Ascomycete type, in particular Aspergillus niger and / or Basidiomycete fungus, in particular Lentinula edodes and / or Agaricus bisporus. Preferably, the fungus is Aspergillus niger.

[0060] The chitosan may be of Genetically Modified Organisms (GMO) origin, but is preferably of non-GMO origin.

[0061] The chitosan according to the invention is natural, i.e. unmodified, in particular it does not contain any chemical modifications.

[0062] One method for preparing chitosan is that described in WO03 / 068824.

[0063] Preferably, the chitosan used in the present invention is in the form of a powder. It is marketed under the name Kiosmetine or Kionutrime by the company Kitozyme, e.g. Kiosmetine-CSH and Kiosmetine P.

[0064] The amount of (a) cationic polymer in the composition according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more, more preferably 0.1% by weight or more, based on the total weight of the composition.

[0065] The amount of (a) cationic polymer in the composition according to the present invention may be 15% by weight or less, preferably 10% by weight or less, more preferably 5% by weight or less, based on the total weight of the composition.

[0066] The amount of the (a) cationic polymer in the composition according to the present invention may be 0.01 to 15% by mass, preferably 0.05 to 10% by mass, and more preferably 0.1 to 5% by mass, relative to the total mass of the composition.

[0067] [Salicylic acid and its derivatives] The composition according to the present invention comprises at least one compound selected from (b) salicylic acid and its derivatives. When two or more (b) compounds are used, they may be the same or different.

[0068] Salicylic acid is a compound represented by the following chemical formula:

[0069] [ka]

[0070] The derivative of salicylic acid may be selected from the compounds of formula (I) or salts thereof:

[0071] [ka]

[0072] [In the formula, R1 represents hydrogen or a saturated linear, branched or cyclic aliphatic hydrocarbon group, or an alkoxy, ester or ketoxy group, or an unsaturated group having at least one conjugated or non-conjugated double bond, which may contain from 1 to 22 carbon atoms and may be substituted with at least one substituent selected from halogen atoms, trifluoromethyl groups and hydroxyl groups in free form or esterified by an acid having from 1 to about 6 carbon atoms, R2 is a hydroxyl group or a group of formula (II):

[0073] [ka]

[0074] (In the formula, R4 represents a saturated aliphatic hydrocarbon group or an alkenyl group having 1 to 18 carbon atoms. represents an ester of R3 represents hydrogen or a saturated or unsaturated, linear or branched aliphatic hydrocarbon group having from 2 to 30 carbon atoms and optionally containing one or more substituents such as those listed above.

[0075] Preferred for R3 are alkyl and alkenyl groups containing 2 to 30 carbon atoms, which are optionally substituted.

[0076] A preferred substituent is the hydroxyl group.

[0077] When R3 is hydrogen, salts of the compound of formula (I) can be used, particularly salts obtained by reaction with a base. Suitable bases include alkali metal hydroxides (sodium and potassium hydroxide), ammonium hydroxide, organic bases such as primary, secondary, tertiary or cyclic organic amines, and amino acids. Specific examples of bases include glycine, taurine, alanine, valine, cysteine, trihydroxymethylaminomethane (TRISTA) and triethanolamine.

[0078] According to a preferred embodiment of the present invention, the composition is prepared using a derivative of formula (I) in which R1 contains at least 4 carbon atoms. For example, R1 may be a saturated linear alkyl or alkoxy group having 4 to 11 carbon atoms.

[0079] Derivatives of formula (I), where R2 is hydroxyl and R3 is hydrogen, include 5-n-octanoylsalicylic acid (CTFA name: capryloylsalicylic acid), 5-n-decanoylsalicylic acid, 5-n-dodecanoylsalicylic acid, 5-n-octylsalicylic acid, 5-n-heptyloxysalicylic acid, 5-tert-octylsalicylic acid, 5-butoxysalicylic acid, 5-ethoxysalicylic acid, 5-methoxysalicylic acid, 5-propoxysalicylic acid, 5-methylsalicylic acid, 5-ethylsalicylic acid and 5-propylsalicylic acid, optionally treated with base.

[0080] When R1 represents hydrogen and R2 represents a hydroxyl group, the derivative of formula (I) is a salicylic acid ester.Preferred compounds include esters of fatty alcohols such as dodecyl, hexadecyl, stearyl, cetyl, myristyl, linoleyl, octyl, oleyl and tridecyl alcohol, or esters of butyl, propyl and ethyl alcohol, or esters of polyols such as propylene glycol, butylene glycol, ethylene glycol or glycerol, or mixtures of these esters.Specific examples include cetyl salicylate, dodecyl salicylate and tridecyl salicylate.

[0081] The amount of the (b) compound in the composition according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more, more preferably 0.1% by weight or more, based on the total weight of the composition.

[0082] The amount of the (b) compound in the composition according to the invention may be up to 15% by weight, preferably up to 10% by weight, more preferably up to 5% by weight, relative to the total weight of the composition.

[0083] The amount of the (b) compound in the composition according to the present invention may be 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, and more preferably 0.1% by mass to 5% by mass, relative to the total mass of the composition.

[0084] (water) The composition according to the present invention comprises (c) water.

[0085] (c) Water may constitute an aqueous phase, which may be the continuous phase, in compositions according to the invention.

[0086] The amount of (c) water may be 50% by weight or more, preferably 60% by weight or more, and more preferably 70% by weight or more, based on the total weight of the composition.

[0087] (c) The amount of water may be up to 99% by weight, preferably up to 97% by weight, and more preferably up to 95% by weight, based on the total weight of the composition.

[0088] The amount of (c) water may be 50% by mass to 99% by mass, preferably 60% by mass to 97% by mass, and more preferably 70% by mass to 95% by mass, based on the total mass of the composition.

[0089] (oil) The composition according to the invention comprises (d) at least one oil. When two or more oils are used, they may be the same or different.

[0090] (d) Oil may constitute a fatty phase, which may be a dispersed or discontinuous phase, in the composition according to the invention.

[0091] In this specification, "oil" means a fatty compound or substance that is in the form of a liquid or paste (non-solid) at atmospheric pressure (760 mmHg) and at room temperature (25°C). As oils, those commonly used in cosmetics can be used, either alone or in combination. These oils can be volatile or non-volatile.

[0092] (d) The oil may be a non-polar oil, such as a hydrocarbon oil, a silicone oil, or the like; a polar oil, such as a vegetable oil or an animal oil, and an ester oil or an ether oil; or a mixture thereof.

[0093] (d) The oil may be selected from the group consisting of oils derived from biological sources, such as oils of vegetable or animal origin, oils derived from non-biological sources, such as chemical, synthetic oils, silicone oils, hydrocarbon oils and fatty alcohols, and mixtures thereof.

[0094] Examples of vegetable oils include, for example, apricot oil, linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, camellia oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

[0095] Examples of animal oils include, for example, squalene and squalane.

[0096] Examples of synthetic oils include alkane oils such as isododecane and isohexadecane, ester oils, ether oils, and artificial triglycerides.

[0097] The ester oil is preferably a saturated or unsaturated, linear or branched C1-C 26 Aliphatic mono- or poly-acids and saturated or unsaturated, linear or branched C1-C 26 They are liquid esters with aliphatic monohydric or polyhydric alcohols, the total number of carbon atoms in the ester being 10 or more.

[0098] Preferably, in the case of esters of monohydric alcohols, at least one of the alcohol and acid from which the esters of the invention are derived is branched.

[0099] Among the monoesters of monovalent acids and monohydric alcohols, mention may be made of ethyl palmitate, ethylhexyl 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.

[0100] C4~C 22 Dicarboxylic or tricarboxylic acids and C1-C 22 Esters with alcohols, and mono-, di- or tricarboxylic acids and non-sugar C4-C 26 Esters with dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols can also be used.

[0101] Mention may in particular be made of the following: 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.

[0102] As ester oil, C6-C 30 , preferably C 12 ~C 22 Sugar esters and diesters of fatty acids can be used. It is recalled that the term "sugar" means an oxygen-bearing hydrocarbon-based compound containing at least four carbon atoms and containing several alcohol functional groups, with or without aldehyde or ketone functional groups. These sugars can be monosaccharides, oligosaccharides or polysaccharides.

[0103] Examples of suitable sugars that may be mentioned are sucrose (or sucrose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose, as well as derivatives thereof, in particular alkyl derivatives, such as methyl derivatives, for example methylglucose.

[0104] Sugar esters of fatty acids are in particular those which are composed of the aforementioned sugars and linear or branched, saturated or unsaturated C6-C 30 , preferably C 12 ~C 22 The esters or mixtures of esters with fatty acids may be selected from the group consisting of: esters or mixtures of esters with fatty acids, which compounds, when unsaturated, may have from 1 to 3 conjugated or non-conjugated carbon-carbon double bonds.

[0105] The esters according to this variant can also be chosen from monoesters, diesters, triesters, tetraesters and polyesters, and mixtures thereof.

[0106] These esters may be, for example, oleate, laurate, palmitate, myristate, behenate, coconut oil fatty acid esters, stearate, linoleate, linolenate, caprate and arachidonic acid esters, or mixtures thereof, such as, in particular, the mixed esters of oleopalmitate, oleostearate and palmitostearate, and pentaerythrityl tetraethylhexanoate.

[0107] More specifically, mono- and diesters are used, in particular the mono- or dioleate, stearate, behenate, oleopalmitate, linoleate, linolenate and oleostearate of sucrose, glucose or methylglucose.

[0108] An example that may be mentioned is the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

[0109] Examples of preferred ester oils include 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 / 2-ethylhexyl caprate, methyl palmitate, ethyl palmitate, isopropyl palmitate, carbon black, and the like. Examples of suitable oleic acid salts include dicaprylyl acetate, isopropyl lauroyl sarcosinate, isononyl isononanoate, ethylhexyl palmitate, isohexyl laurate, hexyl laurate, isocetyl stearate, isopropyl isostearate, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), pentaerythrityl tetra(2-ethylhexanoate), 2-ethylhexyl succinate, diethyl sebacate, and mixtures thereof.

[0110] Examples of artificial triglycerides include capryl caprylyl glyceride, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, capric / caprylic triglyceride, and capric / caprylic / linolenic triglyceride.

[0111] The hydrocarbon oil may be selected from: - Linear or branched, optionally cyclic, C6-C 16 Lower alkanes. Examples that may be mentioned are hexane, undecane, dodecane, tridecane, and isoparaffins, such as isohexadecane, isododecane and isodecane. - Linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffin, liquid petroleum jelly, polydecenes and hydrogenated polyisobutenes, such as Parleam®, and squalane.

[0112] Preferred examples of hydrocarbon oils include, for example, linear or branched hydrocarbons such as isohexadecane, isododecane, squalane, mineral oils (e.g., liquid paraffin), paraffin, petrolatum or petrolatum, naphthalene, and the like; hydrogenated polyisobutene, isoeicosane, and decene / butene copolymers; and mixtures thereof.

[0113] The term "aliphatic" in aliphatic alcohols means containing a relatively large number of carbon atoms. Thus, alcohols having 4 or more, preferably 6 or more, more preferably 12 or more carbon atoms are included within the scope of aliphatic alcohols. The aliphatic alcohols may be saturated or unsaturated. The aliphatic alcohols may be linear or branched.

[0114] The aliphatic alcohol may have the structure R-OH, where R is selected from saturated and unsaturated, linear and branched groups 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 is selected from C 12 ~C 20 Alkyl group and C 12 ~C 20 alkenyl groups. R may be unsubstituted or substituted with at least one hydroxyl group.

[0115] 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, arachidonyl alcohol, erucyl alcohol, and mixtures thereof.

[0116] Preferably, the fatty alcohol is a saturated fatty alcohol.

[0117] Thus, aliphatic alcohols are linear or branched, saturated or unsaturated C6-C 30 Alcohols, preferably linear or branched, saturated C6-C 30 Alcohols, more preferably linear or branched, saturated C 12 ~C 20 Alcohol can be selected.

[0118] The term "saturated fatty alcohol" as used herein means an alcohol having a long aliphatic saturated carbon chain. A saturated fatty alcohol is any linear or branched saturated C-C 30 It is preferably selected from aliphatic alcohols. Linear or branched saturated C6-C 30 Among fatty alcohols, linear or branched saturated C 12 ~C 20 Fatty alcohols are preferably used. Any linear or branched saturated C 16 ~C 20 More preferably, an aliphatic alcohol can be used. 16 ~C 20 Even more preferably, an aliphatic alcohol can be used.

[0119] 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 mixtures thereof (e.g., cetearyl alcohol), and behenyl alcohol can be used as the saturated fatty alcohol.

[0120] According to at least one embodiment, the fatty alcohols used in the compositions according to the invention are preferably chosen from octyldodecanol, hexyldecanol, and mixtures thereof.

[0121] It is preferred to use oils derived from biological sources, such as oils of vegetable or animal origin, more preferably vegetable oils.

[0122] Oils of vegetable or animal origin can include hydrocarbon oils.

[0123] Preferred examples of the plant-derived hydrocarbon oil include linear or branched hydrocarbons such as dodecane, tetradecane, hexadecane, octadecane, squalane, and hemisqualane.

[0124] The (d) oil is preferably selected from vegetable oils, synthetic ester oils, and mixtures thereof, preferably vegetable oils.

[0125] In a preferred embodiment, the (d) oil may be surrounded by a plurality of (a) cationic polymers or a complex of the (a) cationic polymer and the (b) compound selected from salicylic acid and its derivatives, or the (d) oil may be present in the hollow of the capsule formed by the (a) cationic polymer or the above complex. In other words, the (d) oil may be covered by the (a) cationic polymer or the above complex, or the capsule formed by the (a) cationic polymer and the above complex contains the (d) oil in the hollow of the capsule.

[0126] The (d) oil surrounded by the (a) cationic polymer or the above complex or present within the hollow of the capsule formed by the (a) cationic polymer or the above complex cannot directly contact keratinous materials such as skin, etc. Therefore, even if the (d) oil has a sticky or oily feel when used, the composition according to the present invention is not considered to have a sticky or oily feel when used.

[0127] The amount of (d) oil in the composition according to the present invention may be 1% by mass or more, preferably 3% by mass or more, more preferably 5% by mass or more, based on the total mass of the composition.

[0128] The amount of (d) oil in the composition according to the present invention may be 50% by mass or less, preferably 45% by mass or less, more preferably 40% by mass or less, based on the total mass of the composition.

[0129] The amount of (d) oil in the composition according to the present invention may be from 1 mass % to 50 mass %, preferably from 3 mass % to 45 mass %, more preferably from 5 mass % to 40 mass %, relative to the total mass of the composition.

[0130] (Monovalent non-polymeric acid or its salt) The composition according to the present invention may comprise (e) at least one monovalent non-polymeric acid or salt thereof. Two or more monovalent non-polymeric acids or salts thereof may be used in combination. Thus, a single type of monovalent non-polymeric acid or salt thereof or a combination of different types of monovalent non-polymeric acids or salts thereof may be used.

[0131] The term "non-polymeric" as used herein means that the acid is not obtained by polymerizing two or more monomers, and thus does not correspond to acids obtained by polymerizing two or more monomers, such as polyacrylic acid.

[0132] The term "salt" as used herein refers to a salt formed by adding a suitable base to a monovalent non-polymeric acid, which can be obtained from the reaction of a monovalent non-polymeric acid with a base according to methods known to those skilled in the art. Salts can include metal salts, such as salts with alkali metals such as Na and K, and salts with alkaline earth metals such as Mg and Ca, and ammonium salts.

[0133] (e) The molecular weight of the monovalent non-polymeric acid or salt thereof is preferably less than 1,000, preferably 500 or less, and more preferably 100 or less.

[0134] The (e) monovalent non-polymeric acid or salt thereof can be included in the aqueous phase formed by (c) water. The (e) monovalent non-polymeric acid or salt thereof can promote dissolution of the (a) cationic polymer in the aqueous phase.

[0135] (e) The monovalent non-polymeric acid or salt thereof may be selected from monovalent organic or inorganic acids and salts thereof, preferably monovalent organic acids and salts thereof, and more preferably monovalent carboxylic acids and salts thereof.

[0136] The monovalent non-polymeric acids have a single acid group which may be selected from the group consisting of carboxylic acid groups, sulfate groups, sulfonic acid groups, phosphoric acid groups, phosphonic acid groups, and mixtures thereof.

[0137] The monovalent non-polymeric acid may be selected from hydroxy acids, preferably alpha-hydroxy acids, such as lactic acid and glycolic acid.

[0138] The monovalent non-polymeric acid may be a monovalent non-polymeric organic acid, preferably a monovalent carboxylic acid, more preferably lactic acid.

[0139] The amount of (e) the monovalent non-polymeric acid or salt 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, based on the total weight of the composition.

[0140] The amount of (e) the monovalent non-polymeric acid or salt 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, based on the total weight of the composition.

[0141] The amount of (e) the monovalent non-polymeric acid or its salt in the composition according to the present invention may be 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, and more preferably 0.1% by mass to 5% by mass, relative to the total mass of the composition.

[0142] (fatty acid) The composition according to the invention may comprise (f) at least one fatty acid. When two or more fatty acids are used, they may be the same or different.

[0143] The term "fatty acid" as used herein means a carboxylic acid having a long aliphatic carbon chain.

[0144] (f) The fatty acid has at least 4 carbon atoms, preferably at least 6 carbon atoms, more preferably at least 8 carbon atoms. (f) The fatty acid may contain up to 26 carbon atoms, preferably up to 24 carbon atoms, more preferably up to 22 carbon atoms. (f) The fatty acid may be any of C4-C 26Fatty acids, preferably C6-C 24 Fatty acids, even more preferably C8-C 22 It is preferably selected from fatty acids.

[0145] The (f) fatty acid may be selected from saturated or unsaturated, linear or branched fatty acids. Thus, the (f) fatty acid may be selected from C4 to C 26 , preferably C6 to C 24 , more preferably C8 to C 22 They may be chosen from saturated and unsaturated, straight-chain or branched fatty acids.

[0146] As the unsaturated linear or branched fatty acid, monounsaturated linear or branched fatty acid or polyunsaturated linear or branched fatty acid may be used. The unsaturated portion of the unsaturated linear or branched fatty acid may include a carbon-carbon double bond or a carbon-carbon triple bond.

[0147] Saturated fatty acids include, for example, caprylic acid (C8), pelargonic acid (C9), and capric acid (C 10 ), lauric acid (C 12 ), myristic acid (C 14 ), pentadecanoic acid (C 15 ), palmitic acid (C 16 ), heptadecanoic acid (C 17 ), stearic acid (C 18 ), Isostearic acid (C 18 ), nonadecanoic acid (C 19 ), arachidic acid (C 20 ), behenic acid (C 22 ), and lignoceric acid (C 24 ) can be mentioned.

[0148] Examples of unsaturated fatty acids include myristoleic acid (C 14 ), palmitoleic acid (C 16 ), oleic acid (C 18 ), linoleic acid (C 18 ), linoleic acid (C 18 ), elaidic acid (C 18 ), arachidonic acid (C 20), eicosenoic acid (C 20 ), erucic acid (C 22 ), and nervonic acid (C 24 ) can be mentioned.

[0149] (f) Fatty acids are C8 to C 18 It is preferred to select from saturated or unsaturated, straight or branched chain fatty acids, more preferably from the group consisting of caprylic acid, capric acid, oleic acid, linoleic acid, stearic acid, isostearic acid and mixtures thereof.

[0150] (f) The fatty acid may be in the form of its free acid or its salt. The salt of the fatty acid may include inorganic salts, such as alkali metal salts (sodium salt, potassium salt, etc.) and alkaline earth metal salts (magnesium salt, calcium salt, etc.), as well as organic salts, such as ammonium salts (quaternary ammonium salts, etc.) and amine salts (triethanolamine salt, triethylamine salt, etc.). A single type of fatty acid salt or a combination of different types of fatty acid salts may be used. Furthermore, a combination of one or more fatty acids in the form of free acid and one or more fatty acids in the form of salt may be used, and one or more types of salt may be used.

[0151] The amount of (f) fatty acid in the composition according to the present invention may be 0.01% by mass or more, preferably 0.05% by mass or more, more preferably 0.1% by mass or more, based on the total mass of the composition.

[0152] On the other hand, the amount of (f) fatty acid in the composition according to the present invention may be 15% by mass or less, preferably 10% by mass or less, more preferably 5% by mass or less, based on the total mass of the composition.

[0153] Therefore, the amount of the (f) fatty acid in the composition according to the present invention may be in the range of 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, and more preferably 0.1% by mass to 5% by mass, relative to the total mass of the composition.

[0154] (pH) The pH of the composition according to the present invention may be 3-8, preferably 3-7.5, and more preferably 3-7.

[0155] (a) the cationic polymer or the complex of (a) the cationic polymer and (b) the compound selected from salicylic acid and its derivatives can be very stable at a pH of 3 to 8. Thus, the composition according to the present invention can be very stable under a pH of 3 to 8.

[0156] 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 compound selected from salicylic acid and its derivatives or (e) a monovalent non-polymeric acid 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.

[0157] (Alkaline agent) 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.

[0158] The alkaline agent may be an inorganic alkaline agent, preferably 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.

[0159] Examples of inorganic alkali metal hydroxides include sodium hydroxide and potassium hydroxide. Examples of alkaline earth metal hydroxides include calcium hydroxide and magnesium hydroxide. As the inorganic alkaline agent, sodium hydroxide is preferred.

[0160] The alkaline agent may be an organic alkaline agent, which is preferably 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, and guanidine and its derivatives.

[0161] Examples of organic alkaline agents include alkanolamines, such as mono-, di-, and triethanolamine, and isopropanolamine, urea, guanidine and their derivatives, basic amino acids, such as ornithine, and diamines, such as those having the following structures:

[0162] [ka]

[0163] (wherein R represents an alkylene such as propylene optionally substituted with a hydroxyl group or a C1-C4 alkyl group, and R1, R2, R3 and R4 independently represent a hydrogen atom, an alkyl group or a C1-C4 hydroxyalkyl group), and examples thereof include 1,3-propanediamine and derivatives thereof.

[0164] The alkaline agent can be used in a total amount of 0.01% by mass to 15% by mass, preferably 0.02% by mass to 10% by mass, and more preferably 0.03% by mass to 5% by mass, based on the total mass of the composition, depending on the solubility thereof.

[0165] (acid) The composition according to the 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.

[0166] The acid may be any inorganic or organic acid commonly used in cosmetics, preferably an inorganic acid. Monobasic and / or polybasic acids may be used. Monobasic acids such as hydrochloric acid (HCl) may be used.

[0167] The acids can be used in a total amount of 0.01% by mass to 15% by mass, preferably 0.02% by mass to 10% by mass, and more preferably 0.03% by mass to 5% by mass, based on the total mass of the composition, depending on their solubility.

[0168] (Optional Ingredients) In addition to the above-mentioned components, the composition according to the present invention may contain optional components typically used in cosmetics, specifically, for example, (a) hydrophilic or lipophilic thickeners derived from synthetic polymers other than cationic polymers, volatile or nonvolatile organic solvents, anionic polymers, amphoteric polymers, nonionic polymers such as β-glucan, (d) silicones and silicone derivatives other than oils, natural extracts derived from animals or plants other than (a) cationic polymers or (d) oils, waxes, etc., within a range that does not impair the effects of the present invention.

[0169] The composition according to the present invention may contain the above optional components in an amount of 0.01% to 30% by mass, preferably 0.05% to 20% by mass, and more preferably 0.1% to 10% by mass, relative to the total mass of the composition.

[0170] The composition according to the invention is free of surfactants or contains at least one surfactant in an amount of at most 1% by weight, preferably at most 0.1% by weight, more preferably at most 0.01% by weight, relative to the total weight of the composition. It is particularly preferred that the composition according to the invention is free of surfactants.

[0171] The amount of synthetic thickeners and / or organic solvents in the composition according to the invention may be up to 1% by weight, preferably up to 0.1% by weight, more preferably up to 0.01% by weight, relative to the total weight of the composition. It is particularly preferred that the composition according to the invention does not contain any synthetic thickeners or organic solvents.

[0172] [Preparation] The composition according to the present invention can be prepared by mixing the essential components described above and, if necessary, the optional components described above.

[0173] The method and means for mixing the above essential components and optional components are not limited. Any conventional method and means can be used to mix the above essential components and optional components to prepare the composition according to the present invention.

[0174] The composition according to the present invention can be prepared by simple or easy mixing with conventional mixing means such as stirrers and homogenizers, and heating may not be required. Therefore, the preparation method of the composition according to the present invention can be environmentally friendly.

[0175] [Cosmetic use] The composition according to the present invention may be intended to be used as a cosmetic composition. Thus, the cosmetic composition according to the present invention may be intended to be applied to keratinous materials. Keratinous materials herein mean materials that contain keratin as a main component, examples of which include skin, scalp, nails, lips, hair, etc. Therefore, it is preferred that the cosmetic composition according to the present invention is used for a cosmetic method for keratinous materials, particularly skin.

[0176] Therefore, the cosmetic composition according to the present invention may be a skin cosmetic composition, preferably a skin care composition or a skin make-up composition, more preferably a skin care composition.

[0177] [form] The compositions according to the invention may be in any form.

[0178] For example, (d) oil can form a fatty phase, and (c) water can form an aqueous phase, and the fatty phase can be dispersed in the aqueous phase. Therefore, the aqueous phase can function as a continuous phase, and the fatty phase can function as a dispersed phase. In other words, the composition according to the present invention may be in the form of an O / W dispersion, such as an O / W emulsion. When the composition according to the present invention is of the O / W type, it can provide a refreshing feeling due to (c) water forming its external phase.

[0179] [Coating] The composition according to the present invention can be used to easily prepare a coating.

[0180] The present invention therefore also relates to a method for preparing a film, preferably a decorative film, optionally having a thickness of more than 0.5 μm, more preferably 1.0 μm or more, even more preferably 1.5 μm or more, comprising: applying a composition according to the invention onto a substrate, preferably a keratinous material, more preferably the skin; drying the composition; The present invention may also relate to a method comprising:

[0181] The upper limit of the thickness of the coating according to the present invention is not limited. Thus, for example, the thickness of the coating 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.

[0182] Since the method for preparing a film according to the present invention includes a step of applying the composition according to the present invention onto a substrate, preferably a keratinous material, more preferably onto the skin, and a step of drying the composition, the method according to the present invention does not require any spin coating or spraying, and therefore, even a relatively thick film can be easily prepared. Therefore, the method for preparing a film according to the present invention can prepare a relatively thick film without using any special equipment such as a spin coater or a spray machine.

[0183] Even if the film according to the invention is relatively thick, it can still be thin and transparent and therefore not easily perceptible, so that the film according to the invention can preferably be used as a cosmetic film.

[0184] If the substrate is not a keratinous material, it is preferred that the substrate is water-soluble, since the coating according to the invention can be removed by washing the substrate with water. Examples of water-soluble materials include poly(meth)acrylic acid, polyethylene glycol, polyacrylamide, polyvinyl alcohol (PVA), starch, cellulose acetate, etc. PVA is preferred.

[0185] When the non-keratin substrate is in the form of a sheet, the substrate may have a thickness greater than that of the coating according to the present invention in order to facilitate handling of the coating attached to the substrate sheet. The thickness of the non-keratin substrate sheet is not limited, but may be 1 μm to 5 mm, preferably 10 μm to 1 mm, more preferably 50 to 500 μm.

[0186] It is more preferred that the film according to the present invention is removable from the non-keratin substrate. The manner of removal is not limited. Thus, the film according to the present invention may be peeled off from the non-keratin substrate, or may be removed by dissolving the substrate sheet in a solvent such as water.

[0187] The present invention also provides (1) A film, preferably a decorative film, optionally having a thickness of preferably more than 0.5 μm, more preferably 1.0 μm or more, even more preferably 1.5 μm or more, applying a composition according to the invention onto a substrate, preferably a keratinous material, more preferably the skin; drying the composition; A coating prepared by a method comprising: and (2) A coating, preferably a decorative coating, optionally having a thickness of preferably more than 0.5 μm, more preferably 1.0 μm or more, even more preferably 1.5 μm or more, (a) at least one cationic polymer selected from chitosans, preferably having a molecular weight of more than 20,000; (b) at least one compound selected from salicylic acid and its derivatives, and (d) oil Including, It may also concern coatings that do not contain surfactants.

[0188] The coating may also include (e) at least one monovalent non-polymeric acid or salt thereof and / or (f) at least one fatty acid.

[0189] The above description of optional ingredients such as (a) cationic polymer, (b) compound selected from salicylic acid and its derivatives, and (d) oil, as well as (e) monovalent non-polymeric acid or its salt, and (f) fatty acid, can be applied to the above coatings (1) and (2).

[0190] The film thus obtained above may be self-supporting. The term "self-supporting" as used herein means that the film may be in the form of a sheet and may be handled as an independent sheet without the aid of a substrate or support. Therefore, the term "self-supporting" may have the same meaning as "self-supporting".

[0191] It is preferred that the coating according to the present invention is hydrophobic.

[0192] The term "hydrophobic" as used herein means that the solubility of the film in water (preferably in a volume of 1 liter) at 20-40° C., preferably 25-40° C., more preferably 30-40° C., is less than 10% by mass, preferably less than 5% by mass, more preferably less than 1% by mass, and even more preferably less than 0.1% by mass, based on the total mass of the film. Most preferably, the film is not soluble in water.

[0193] When the film according to the present invention is hydrophobic, the film can have water-resistant properties and can therefore remain on the keratinous material, such as the skin, even when the surface of the keratinous material is wet, for example, from sweat and rain, so that when the film according to the present invention provides any cosmetic benefit, the cosmetic benefit can last for a long time.

[0194] On the other hand, the film according to the invention can be easily removed from keratinous materials such as skin under alkaline conditions, such as a pH of 8 to 12, preferably 9 to 11. Thus, while the film according to the invention is difficult to remove with water, it can be easily removed with soaps that can provide such alkaline conditions.

[0195] The coating according to the present invention may comprise at least one biocompatible and / or biodegradable polymer layer. 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.

[0196] The term "biocompatible" polymer, as used herein, means that the polymer does not have excessive interactions between the polymer and cells in the body, including the skin, and the polymer is not recognized as foreign by the body.

[0197] The term "biodegradable" polymer, as used herein, means that the polymer can be broken down or broken down in vivo, for example by the metabolism of the organism itself or by the metabolism of microorganisms that may be present in the organism. Biodegradable polymers can also be broken down by hydrolysis.

[0198] When the coating according to the present invention comprises a biocompatible and / or biodegradable polymer, for example, the coating can reduce or eliminate irritation to the scalp and / or eliminate environmental pollution.

[0199] Indeed, the coating according to the invention may comprise at least one cationic polymer selected from (a) the chitosan family, which are biodegradable polymers.

[0200] In addition, the use of biocompatible and / or biodegradable polymers allows the cosmetic sheet according to the present invention to adhere well to the skin.

[0201] The film according to the present invention can be used for the cosmetic treatment of keratinous materials, preferably skin, especially face.The film according to the present invention can be in any shape or form.For example, the film can be used as a full face mask sheet, or a patch for a part of face, such as cheek, nose, and around the eyes.

[0202] [Cosmetic methods and uses] The present invention also provides A cosmetic method for keratinous materials such as the skin, comprising the steps of applying a composition according to the invention to the keratinous materials and drying the composition to form a cosmetic film on the keratinous materials, or Use of the composition according to the invention for preparing a cosmetic film on a keratinous material such as the skin Also relates to.

[0203] Cosmetic method means herein a non-therapeutic cosmetic method for the care and / or coverage of keratinous surfaces such as the skin.

[0204] Furthermore, the cosmetic film described above may have cosmetic benefits such as trapping sebum, providing a matte appearance to keratinous materials such as skin, absorbing or adsorbing malodors, and / or protecting keratinous materials from, for example, dirt or pollutants, even if the cosmetic film does not contain any cosmetic active ingredients.

[0205] In addition, the cosmetic film can instantly change or modify the appearance of the skin by changing the light reflection on the skin, even if the cosmetic film does not contain any cosmetic active ingredient. Thus, the cosmetic film can be capable of hiding skin defects such as pores or wrinkles. Furthermore, the cosmetic film can instantly change or modify the feel of the skin by changing the surface roughness on the skin, etc. Furthermore, the cosmetic film can instantly protect the skin from environmental stresses, such as pollutants, impurities, etc., by covering the surface of the skin and shielding the skin as a barrier.

[0206] The cosmetic benefits can be adjusted or controlled by varying the chemical composition, thickness and / or surface roughness of the cosmetic coating.

[0207] When the cosmetic film contains at least one additional cosmetic active ingredient other than (b) a compound selected from salicylic acid and its derivatives and (d) oil, the cosmetic film can have a cosmetic effect brought about by the additional cosmetic active ingredient.For example, when the cosmetic film contains at least one cosmetic active ingredient selected from an anti-aging agent, a sebum suppressant, a deodorant agent, an antiperspirant, a whitening agent, and a mixture thereof, the cosmetic film can treat skin aging, absorb sebum on the skin, control odor on the skin, control sweat on the skin, and / or whiten the skin.

[0208] It is also possible to apply a make-up cosmetic composition onto the cosmetic film or cosmetic sheet according to the present invention after application onto the skin.

[0209] The present invention also relates to a method for producing a composition comprising the steps of: (b) at least one compound selected from salicylic acid and its derivatives; (a) at least one cationic polymer selected from chitosans, preferably having a molecular weight of more than 20,000; (c) water, and (d) oil It may also relate to use in a composition comprising the compound of formula (I) for stabilising the composition.

[0210] The composition may also include (e) at least one monovalent non-polymeric acid or salt thereof and / or (f) at least one fatty acid.

[0211] The above explanations regarding optional ingredients such as (a) cationic polymer, (b) compound selected from salicylic acid and its derivatives, (c) water and (d) oil, and (e) monovalent non-polymeric acid or its salt, and (f) fatty acid, are applicable in the above uses. EXAMPLES

[0212] The present invention will now be described in more detail by means of examples, which should not, however, be construed as limiting the scope of the present invention.

[0213] (Examples 1 to 10 and Comparative Examples 1 to 3) [Preparation] Each of the compositions according to Examples 1 to 10 and Comparative Examples 1 to 3 was prepared by mixing the components shown in Tables 1 to 6. All numerical values ​​for the amounts of the components in Tables 1 to 6 are based on "mass %" of the active ingredient.

[0214] [Table 1]

[0215] [Table 2]

[0216] [Table 3]

[0217] [Table 4]

[0218] [Table 5]

[0219] [Table 6]

[0220] [evaluation] (stability) Each of the compositions according to Examples 1 to 10 and Comparative Examples 1 to 3 was stored in a transparent container at room temperature for one day. The stability of the composition was visually observed and evaluated according to the following criteria. Very good: the composition was homogeneous. Good: The composition was homogeneous, but some unevenness was observed. Poor: The composition was not uniform and unevenness was observed. Very poor: Phase separation was observed.

[0221] The results are shown in Tables 1 to 6.

[0222] (Summary) According to Table 1, the compositions according to Examples 1 to 3 were stable, but the composition according to Comparative Example 1 was unstable. The composition according to Example 3 was more preferred because it showed better stability than the composition according to Example 1.

[0223] Table 2 shows that the composition according to Example 4, which contained a relatively small amount of oil (20% by weight), was stable.

[0224] Table 3 shows that compositions according to the invention can contain relatively high amounts of oil (40% by weight).

[0225] Table 4 shows that the addition of a fatty acid (oleic acid) can improve the stability of the composition according to the invention.

[0226] Table 5 shows that a polyhydric alcohol (glycerin) can be added to the composition according to the invention.

[0227] Table 6 shows that the monovalent non-polymeric acid (lactic acid) or its salts can be omitted from compositions according to the invention.

[0228] Moreover, the compositions according to the present invention contain ingredients that are environmentally compatible.

Claims

1. (a) at least one cationic polymer selected from chitosans, (b) at least one compound selected from salicylic acid and its derivatives, (c) water, and (d) oil A composition comprising, preferably a cosmetic composition, more preferably a cosmetic composition for keratinous substances such as skin, A composition that does not contain a surfactant, or contains at least one surfactant in an amount of 1% by mass or less, preferably 0.1% by mass or less, and more preferably 0.01% by mass or less, based on the total mass of the composition.

2. (a) The composition according to claim 1, wherein the cationic polymer is selected from chitosans having a molecular weight greater than 20,000.

3. The composition according to claim 1, wherein the amount of (a) cationic polymer in the composition is 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

4. Salicylic acid derivatives are given by formula (I): 【Chemistry 1】 [In the formula, R 1 This represents hydrogen, or a saturated linear, branched, or cyclic aliphatic hydrocarbon group, or an alkoxy, ester, or ketoxy group, or an unsaturated group having at least one conjugated or non-conjugated double bond, where these groups may contain 1 to 22 carbon atoms and may optionally be substituted with at least one substituent selected from a halogen atom, a trifluoromethyl group, or a hydroxyl group in free form or esterified with an acid having 1 to 6 carbon atoms. R 2 is a hydroxyl group or formula (II): 【Chemistry 2】 (In the formula, R 4 (This represents a saturated aliphatic hydrocarbon group or an alkenyl group having 1 to 18 carbon atoms.) It represents the ester group, R 3 This represents a saturated or unsaturated linear or branched aliphatic hydrocarbon group having hydrogen or 1 to 30 carbon atoms, and optionally containing one or more of the above substituents. The composition according to claim 1, selected from compounds represented by

5. The composition according to claim 1, wherein the amount of compound (b) in the composition is 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

6. The composition according to claim 1, wherein the amount of (c) water in the composition is 50% to 99% by mass, preferably 60% to 97% by mass, and more preferably 70% to 95% by mass, based on the total mass of the composition.

7. (d) The composition according to claim 1, wherein the oil is selected from vegetable oils, synthetic ester oils, and mixtures thereof, preferably from vegetable oils.

8. The composition according to claim 1, wherein the amount of (d) oil in the composition is 1% to 50% by mass, preferably 3% to 45% by mass, and more preferably 5% to 40% by mass, based on the total mass of the composition.

9. (e) The composition according to claim 1, further comprising at least one monovalent nonpolymeric acid or a salt thereof, preferably one monovalent nonpolymeric organic acid or a salt thereof, more preferably one monovalent carboxylic acid or a salt thereof, and even more preferably lactic acid or a salt thereof.

10. The composition according to claim 9, wherein the amount of (e) a monovalent nonpolymeric acid or a salt thereof in the composition is 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

11. (f) The composition according to claim 1, further comprising at least one fatty acid.

12. (f) The fatty acid is C 4 to C 26 , preferably C 6 to C 24 , more preferably C 8 to C 22 The composition according to claim 11, selected from saturated and unsaturated straight-chain or branched fatty acids.

13. The composition according to claim 11, wherein the amount of (f) fatty acid in the composition is 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

14. The composition according to claim 1, wherein the pH of the composition is 3 to 8, preferably 3 to 7.5, more preferably 3 to 7.

15. A cosmetic method for keratinous substances in the skin, etc. A step of applying the composition according to any one of claims 1 to 14 to a keratin substance, The process involves drying the composition to form a cosmetic film on the keratin material. Methods that include...

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