BR112019025398B1 - COMPOSITION, PROCESS FOR PREPARING A FILM, COSMETIC PROCESS FOR A KERATIN SUBSTRATE AND USE OF THE COMPOSITION - Google Patents

Abstract

The present invention relates to a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising: (a) at least one particle, comprising at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid having two or more pKa values or salt(s) of the (s) same(s) or at least one non-polymeric base with two or more pKb values or salt(s) thereof; (b) at least one oil; and (c) water. The composition according to the present invention is stable and can have a variety of cosmetic functions. For example, the composition according to the present invention can prepare a film which can have cosmetic effects such as hydration due to the oil(s).

Description

TECHNICAL FIELD

[001] The present invention relates to a composition that includes particles of the polyionic complex and a film of particles of the polyionic complex, as well as a process for preparing a film using particles of the polyionic complex and a use of particles of the polyionic complex to the preparation of a film.

BACKGROUND OF THE INVENTION

[002] A polyionic complex that is formed with an anionic polymer and a cationic polymer is already known.

[003] The use of a film made of a polyionic complex for cosmetic purposes is also proposed by, for example, WO 2013/153678 and JP-A-2014-227389. The film disclosed in WO 2013/153678 and JP-A-2014-227389 can provide certain cosmetic effects.

[004] However, the preparation of the film disclosed in WO 2013/153678 and JP-A-2014-227389 requires a spin coating process that needs a high speed rotation of a substrate and therefore can be difficult prepare the film in situ on a keratin substrate such as skin.

[005] Document JP-A-2015-107939 discloses the preparation of a film made from a polyionic complex for cosmetic purposes, spraying a first solution of an anionic polymer and a cationic polymer and spraying a second solution of the other polymer anionic and cationic polymer, into a keratin substance, to mix the anionic and cationic polymers to form a film including the polyionic complex. This preparation can prepare the film in situ on a keratin substance such as skin.

[006] However, it may be difficult to prepare the above film by the spraying process disclosed in JP-A-2015-107939 without careful control, because it may not be easy to control the amounts of the first and second solutions to be sprayed. In particular, preparing a relatively thick film using the sputtering process disclosed in JP-A-2015-107939 can be difficult.

[007] An option to easily make a film made from a polyionic complex can be the use of a polyionic complex in the form of particles. For example, JP-A-2005-36190 discloses a dispersion including particles of the polyion complex which has been formed by an anionic polymer and a cationic polymer.

SHORT DESCRIPTION OF THE INVENTION

[008] However, it has been found that a dispersion including particles of the polyionic complex is not always stable. If the dispersion is unstable, the polyionic complex particles tend to precipitate.

[009] Thus, a first object of the present invention is to provide a stable composition, in particular a stable composition in the form of an emulsion, which includes particles of the polyionic complex.

[0010] The above object of the present invention can be achieved by a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition comprising: (a) at least one particle, comprising at least one cationic polymer and at least one polymer anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid with two or more pKa values or salt( is) of the same(s) or at least one non-polymeric base with two or more pKb values or salt(s) thereof; (b) at least one oil; and (c) water.

[0011] A plurality of (a) particles may be present at the interface between the (b) oil and (c) water, or it may form a capsule with a void, and the (b) oil is present in the void.

[0012] The cationic polymer may have at least one positively chargeable and/or positively charged moiety selected from the group consisting of a primary, secondary or tertiary amino group, a quaternary amino group, a guanidine group, a biguanide group, a imidazole group, an imino group and a pyridyl group.

[0013] The cationic polymer may be selected from the group consisting of alkyldiallylamine cyclopolymers and dialkyldiallylammonium cyclopolymers such as (co)polydiallyldialkyl ammonium chloride, (co)polyamines such as (co)polylysines and chitosans, (co) ) cationic polyamino acids, such as collagen, and salts thereof.

[0014] The anionic polymer may have at least one negatively chargeable and/or negatively charged portion selected from the group consisting of a sulfuric group, a sulfate group, a sulfonic group, a sulfonate group, a phosphoric group, a phosphate group , a phosphonic group, a phosphonate group, a carboxylic group, and a carboxylate group.

[0015] The anionic polymer can be selected from the group consisting of polysaccharides such as alginic acid, hyaluronic acid and cellulose polymers, anionic (co)polyamino acids such as (co)polyglutamic acids, (co)poly(meth)acrylic acids , (co)polyamic acids, (co)polystyrene sulfonate, (co)poly(vinyl sulfate), dextran sulfate, chondroitin sulfate, (co)polymaleic acids, (co)polyfumaric acids, maleic acid (co)polymers , and salts thereof.

[0016] The amphoteric polymer may have at least one positively chargeable and/or positively charged moiety selected from the group consisting of a primary, secondary or tertiary amino group, a quaternary ammonium group, a guanidine group, a biguanide group, an imidazole group, an imino group and a pyridyl group, and at least one negatively charged and/or negatively charged moiety selected from the group consisting of a sulfuric group, a sulfate group, a sulfonic group, a sulfonate group, a phosphoric group, a phosphate group, a phosphonic group, a phosphonate group, a carboxylic group, and a carboxylate group.

[0017] The amphoternium polymer may be selected from the group consisting of polyquaternium-22, polyquaternium-39, polyquaternium-53, polyquaternium-64, polyquaternium-51, polyquaternium-61, and mixtures thereof.

[0018] The amount of polymer(s) in the composition according to the present invention can be from 0.001 to 25% by weight, preferably from 0.1 to 20% by weight, and more preferably from 0.3 at 15% by weight, relative to the total weight of the composition.

[0019] The amount of the non-polymeric acid having two or more pKa values or salt(s) of the same(s) or the non-polymeric base having two or more pKb values or salt(s) of the same(s) ) same(s) in the composition according to the present invention can be from 0.0001 to 30% by weight, preferably from 0.01 to 20% by weight, and more preferably from 0.1 to 15% by weight , in relation to the total weight of the composition.

[0020] The particle (a) may comprise (d) at least one hydrophobic amino acid other than the non-polymeric acid or base.

[0021] The pH of the composition according to the present invention may be from 3 to 9, preferably from 3.5 to 8.5, and more preferably from 4 to 8.

[0022] The amount of particles (a) in the composition according to the present invention can be from 0.001 to 60% by weight, preferably from 0.1 to 50% by weight, and more preferably from 1 to 40% by weight relative to the total weight of the composition.

[0023] It is preferred that oil (b) be selected from polar oils.

[0024] The amount of oil (b) in the composition may be from 0.01 to 50% by weight, preferably from 0.1 to 40% by weight, and more preferably from 1 to 35% by weight, relative to weight total composition.

[0025] It is preferred that the composition according to the present invention is in the form of an emulsion, more preferably an O/W emulsion, and even more preferably an O/W emulsion comprising 0.1% by weight or less of surfactant. s), preferably 0.01% by weight or less of surfactant(s), and most preferably no surfactant(s).

[0026] It is preferred that the composition according to the present invention comprises (e) at least one oil gelling agent.

[0027] A second object of the present invention is to provide a process that can easily prepare a film made from polyionic complex particles wherein the film comprises at least one oil.

[0028] The above object of the present invention can be achieved by a process for preparing a film, preferably a cosmetic film, comprising: - applying on a substrate, preferably a keratin substrate, and more preferably skin, the composition according to present invention; and - drying the composition.

[0029] A third object of the present invention is to provide a film made from polyion complex particles wherein the film comprises at least one oil.

[0030] The above object of the present invention can be achieved by: (1) A film, preferably a cosmetic film, prepared by a process comprising: - application on a substrate, preferably a keratin substrate, and more preferably skin, the composition according to the present invention; and - drying the composition, or (2) A film, preferably a cosmetic film, comprising: at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer; at least one non-polymeric acid having two or more pKa values or salt(s) thereof or at least one non-polymeric base having two or more pKb values or salt(s) thereof (s); and at least one oil.

[0031] The present invention also relates to a cosmetic process for a keratin substrate such as skin, comprising - applying to the keratin substrate the composition according to the present invention; and - drying the composition to form a cosmetic film on the keratin substrate.

[0032] The thus obtained cosmetic film can be resistant to water with a pH of 7 or less and can be removable with water with a pH greater than 7, preferably 8 or more and more preferably 9 or more.

[0033] The present invention also relates to the use of the composition according to the present invention for the preparation of a cosmetic film on a keratin substrate, such as skin, wherein the cosmetic film is resistant to water with a pH of 7 or less and is removable with water having a pH greater than 7, preferably 8 or greater and most preferably 9 or greater.

BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 shows encapsulation of oil globules by PGP according to Example 1.

DETAILED DESCRIPTION OF THE INVENTION

[0035] After diligent research, the inventors have found that it is possible to provide a stable composition, such as a stable emulsion, which includes polyionic complex particles and oil. Therefore, the composition according to the present invention comprises: (a) at least one particle, comprising at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid with two or more pKa values or salt(s) thereof or at least one non-polymeric base with two or more pKb values or salt(s) thereof; (b) at least one oil; and (c) water.

[0036] It may be preferred that a plurality of the particles of (a) are present at the interface between the oil (b) and the water (c), or a plurality of the particles (a) form a capsule that has a void, and the oil (b) is present in the void.

[0037] Furthermore, the inventors have found that it is possible to provide a process that can easily prepare a film comprising polyion complex particles and oil(s). Thus, the process according to the present invention is a process for preparing a film, preferably a plastic film, the process comprising - applying on a substrate, preferably a keratin substrate, the composition according to the present invention; and - drying the composition.

[0038] Furthermore, the inventors have found that it is possible to provide a film comprising polyionic complex particles and oil(s). Thus, the film according to the present invention is (1) A film, preferably a cosmetic film, prepared by a process comprising: - applying onto a substrate, preferably a keratin substrate, and more preferably the skin, the composition of according to the present invention; and - drying the composition, Or (2) A film, preferably a cosmetic film, comprising: at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer; at least one non-polymeric acid having two or more pKa values or salt(s) thereof or at least one non-polymeric base having two or more pKb values or salt(s); and at least one oil.

[0039] The composition according to the present invention is stable for a long period of time and can be used to easily prepare a film of a polyionic complex wherein the film includes at least one oil by applying the composition on a substrate, preferably a keratin substrate such as skin and hair, and more preferably skin and drying composition.

[0040] The polyion complex film according to the present invention can have a variety of cosmetic functions.

[0041] For example, the film according to the present invention itself can have cosmetic effects such as moisturizing due to the oil(s), as well as absorbing or adsorbing bad odor, changing the appearance of a keratin substrate such as the skin, altering the feel of the keratin substrate, and/or protecting the keratin substrate from, for example, dirt or pollutants.

[0042] It is also possible to perform sustained release of the oil(s) from the film.

[0043] If the polyion complex film includes at least one cosmetic active ingredient other than oil, the film may have cosmetic effects provided by the active ingredient(s). For example, if the polyionic complex film includes at least one cosmetic active ingredient selected from UV filters, anti-aging agents, anti-sebum agents, deodorizing agents, anti-perspirant agents, bleaching agents and a mixture of the same, the film can filter UV rays, treat skin aging, absorb sebum from the skin, control skin odor, control skin perspiration and/or lighten the skin.

[0044] The film according to the present invention may be transparent and therefore may not be easy to see even when the film is relatively thick.

[0045] Furthermore, the film according to the present invention is water-resistant, and therefore, it can remain on a keratin substrate such as skin even if the surface of the keratin substrate is wet due to, for example, example, sweat and rain.

[0046] Furthermore, the film according to the present invention can be easily removed from a keratin substrate such as skin under alkaline conditions. Therefore, the film according to the present invention is difficult to remove with water, although it can be easily removed with a soap that can provide alkaline conditions.

[0047] Thus, if the film according to the present invention includes a hydrophilic or water-soluble UV filter, the film according to the present invention can exhibit UV-shielding effects that are water resistant (waterproof ) and can be long-lasting, but can be easily removed with a soap that can provide alkaline conditions.

[0048] Hereinafter, the composition, process, film and the like according to the present invention will be explained in more detail. [Polyionic Complex Particles]

[0049] The composition according to the present invention includes (a) at least one particle which is a polyion complex particle. Two or more different types of (a) particles may be used in combination. Thus, a single type of particle (a) or a combination of different types of particles (a) can be used.

[0050] The particle size of polyionic complex may be from 5 nm to 100 µm, preferably from 100 nm to 50 µm, more preferably from 200 nm to 30 µm, and even more preferably from 500 nm to 20 µm. A particle size smaller than 1 μm can be measured by a dynamic light scattering method, and a particle size larger than 1 μm can be measured by an optical microscope. Such a particle size can be based on the number average diameter.

[0051] The amount of the particle(s) (a) in the composition according to the present invention may be 0.001% by weight or more, preferably 0.1% by weight or more, and more preferably 1% by weight weight or more relative to the total weight of the composition.

[0052] The amount of the particle(s) (a) in the composition according to the present invention may be 60% by weight or less, preferably 50% by weight or less, and more preferably 40% by weight weight or less relative to the total weight of the composition.

[0053] The amount of the particle(s) (a) in the composition according to the present invention can be from 0.001 to 60% by weight, preferably from 0.1 to 50% by weight, and more preferably from 1 to 40% by weight, relative to the total weight of the composition.

[0054] A plurality of the particles (a) may be present at the interface between the oil (b) and the water (c). Thus, particles (a) can form an emulsion. For example, if water (c) constitutes a continuous phase and oil (b) constitutes dispersed phases, the particles (a) can form an O/W emulsion which can be similar to the so-called Pickering emulsion.

[0055] Alternatively, a plurality of particles (a) can form a capsule with a void. Oil (b) may be present in the vacuum. In other words, the oil (b) can be incorporated into the capsule. The capsule wall may be composed of a continuous layer or film formed from the particles (a). While not wishing to be bound by theory, it is believed that the particles (a) can reassemble at the oil (b) and water (c) interface to spontaneously form a capsule that has a void to enclose the oil (b) . For example, a continuous phase made up of water (c) and a dispersed phase made up of oil (b) in the capsule can form an O/W emulsion which can also be similar to the so-called Pickering emulsion.

[0056] The above would mean that the particle (a) itself is amphiphilic and insoluble in oil or water.

[0057] The particle (a) includes at least one polymer or combination of polymers. Specifically, particle (a) includes: (1) at least one cationic polymer and at least one anionic polymer; (2) at least one cationic polymer and at least one amphoteric polymer; (3) at least one anionic polymer and at least one amphoteric polymer; or (4) at least one amphoteric polymer.

[0058] There is no limit to the type of cationic, anionic and amphoteric polymers. Two or more different types of cationic polymers can be used in combination. Thus, a single type of cationic polymer or a combination of different types of cationic polymers can be used. Two or more different types of anionic polymers can be used in combination. Thus, a single type of anionic polymer or a combination of different types of anionic polymers can be used. Two or more different types of amphoteric polymers can be used in combination. Thus, a single type of amphoteric polymer or a combination of different types of amphoteric polymers can be used.

[0059] In the above (1), the ratio of the amount, for example chemical equivalent, of the cationic polymer(s)/anionic polymer(s) may be 0.05 to 18, preferably 0.1 to 10, and more preferably 0.5 to 5.0. In particular, it may be preferred that the number of cationic groups of the cationic polymer(s)/number of anionic groups of the anionic polymer(s) is from 0.05 to 18, plus preferably 0.1 to 10 and even more preferably 0.5 to 5.0.

[0060] In the above (2), the ratio of the amount, for example chemical equivalent, of the cationic polymer(s)/amphoteric polymer(s) may be 0.05 to 18, preferably 0 .1 to 10, and more preferably 0.5 to 5.0. In particular, it may be preferred that the number of cationic groups of the cationic polymer(s)/number of cationic and anionic groups of the amphoteric polymer(s) is from 0.05 to 18 , more preferably 0.1 to 10, and even more preferably 0.5 to 5.0.

[0061] In (3) above, the ratio of the amount, for example chemical equivalent, of the anionic polymer(s)/amphoteric polymer(s) may be 0.05 to 18, preferably 0.1 to 10, and most preferably 0.5 to 5.0. In particular, it may be preferred that the number of anionic groups of the anionic polymer(s)/number of cationic and anionic groups of the amphoteric polymer(s) is from 0.05 to 18, more preferably 0.1 to 10, and even more preferably 0.5 to 5.0.

[0062] The total amount of the polymer(s) according to any one of the items (1) to (4) above in the composition according to the present invention may be 0.001% by weight or more, preferably 0. 1% by weight or more, and more preferably 1% by weight or more, based on the total weight of the composition.

[0063] The total amount of the polymer(s) according to any one of the items (1) to (4) above in the composition according to the present invention may be 25% by weight or less, preferably 20% by weight or less and more preferably 15% by weight or less, relative to the total weight of the composition.

[0064] The total amount of polymer(s) according to any one of the items (1) to (4) above in the composition according to the present invention can be from 0.001 to 25% by weight, preferably from 0 .1 to 20% by weight, and more preferably from 1 to 15% by weight, relative to the total weight of the composition. (Cationic Polymer)

[0065] A cationic polymer has a positive charge density. The charge density of the cationic polymer can be from 0.01 meq/g to 20 meq/g, preferably from 0.05 to 15 meq/g, and more preferably from 0.1 to 10 meq/g.

[0066] It may be preferred that the molecular weight of the cationic polymer is 500 or more, preferably 1000 or more, more preferably 2000 or more and even more preferably 5000 or more.

[0067] Unless otherwise defined in the descriptions, "molecular weight" means a number average molecular weight.

[0068] The cationic polymer may have at least one positively chargeable and/or positively charged portion selected from the group consisting of a primary, secondary or tertiary amino group, a quaternary ammonium group, a guanidine group, a biguanide group, a imidazole group, an imino group and a pyridyl group. The term "amino group" (primary) herein means an -NH 2 group.

[0069] The cationic polymer may be a homopolymer or a copolymer. The term "copolymer" is understood to mean both copolymers obtained from two types of monomers and those obtained from more than two types of monomers, such as terpolymers obtained from three types of monomers.

[0070] The cationic polymer can be selected from natural and synthetic cationic polymers. Non-limiting examples of cationic polymers are as follows. (1) Homopolymers and copolymers derived from acrylic or methacrylic esters and amides and comprising at least one unit chosen from the units of the following formulas: wherein: R1 and R2, which may be the same or different, are chosen from hydrogen atoms and alkyl groups comprising from 1 to 6 carbon atoms, for example, methyl and ethyl groups; R3, which may be the same or different, is chosen from hydrogen and CH3; the symbols A, which may be identical or different, are chosen from linear or branched alkyl groups comprising from 1 to 6 carbon atoms, for example from 2 to 3 carbon atoms, and hydroxyalkyl groups comprising from 1 to 4 carbon atoms carbon; R4, R5, and R6, which may be the same or different, are chosen from alkyl groups comprising 1 to 18 carbon atoms and benzyl groups, and in at least one embodiment, alkyl groups comprising 1 to 6 carbon atoms; and X is an anion derived from an inorganic or organic acid, such as methosulfate anions and halides, for example chloride and bromide.

[0071] The copolymers of family (1) may also comprise at least one unit derived from co-monomers that may be chosen from acrylamides, methacrylamides, diacetone acrylamides, acrylamides and methacrylamides substituted on the nitrogen atom with alkyl groups (C1- C4) lower, groups derived from acrylic or methacrylic acids and their esters, vinyl lactams, such as vinylpyrrolidone and vinylcaprolactam, and vinyl esters.

[0072] Examples of family (1) copolymers include, but are not limited to: copolymers of acrylamide and dimethylaminoethyl methacrylate quaternized with dimethyl sulfate or a dimethyl halide, copolymers of acrylamide and methacryloyloxyethyltrimethylammonium chloride described by for example, in European patent application No. 0 080 976, copolymers of acrylamide and methacryloyloxyethyltrimethylammonium methosulfate, copolymers of vinylpyrrolidone/dialkylaminoalkyl acrylate or methacrylate, quaternized or not, described, for example, in French patents 2 077 143 and 2 393 573, dimethylaminoethyl methacrylate/vinylcaprolactam/vinylpyrrolidone terpolymers, vinylpyrrolidone/methacrylamidopropyldimethylamine copolymers, quaternized vinylpyrrolidone/dimethylaminopropylmethacrylamide copolymers, and cross-linked methacryloyloxy(C1-C4)alkyltri(C1-C4)alkylammonium salt polymers, such as polymers obtained by homopolymerization of the methyl chloride quaternized dimethylaminoethyl methacrylate, or by copolymerization of the acrylamide with the methyl chloride quaternized dimethylaminoethyl methacrylate, the homopolymerization or copolymerization being followed by crosslinking with a compound containing an olefinic unsaturation, for example methylenebisacrylamide; (2) Cationic cellulose derivatives, such as cellulose ether derivatives comprising quaternary ammonium groups, described, for example, in French Patent No. 1 492 597, as polymers sold under the names “JR” (JR 400, JR 125 , JR 30M) or “LR” (LR 400, LR 30M) by Union Carbide Corporation. These polymers are also defined in the CTFA dictionary as quaternary ammoniums of hydroxyethylcellulose which have reacted with an epoxide substituted with a trimethylammonium group; (3) Cationic cellulose derivatives, such as cellulose copolymers and cellulose derivatives grafted with a water-soluble monomer of quaternary ammonium, and described, for example, in US Patent No. 4,131,576, as hydroxyalkylcelluloses, for example, hydroxymethyl-, hydroxyethyl - and hydroxypropylcelluloses grafted, for example, with a salt chosen from the methacryloylethyl trimethylammonium salts, methacrylamidopropyltrimethylammonium and dimethyldiallylammonium salts.

[0073] Commercial products corresponding to these polymers include, for example, products sold under the name “Celquat® L 200” and “Celquat® H 100” by the company National Starch, (4) Non-cellulose-based cationic polysaccharides described in US Patent Nos. 3,589,578 and 4,031,307, such as guar gums comprising cationic trialkylammonium groups, cationic hyaluronic acid, and hydroxypropyl trimonium dextran chloride. Guar gums modified with a salt, for example 2,3-epoxypropyltrimethylammonium chloride (guar hydroxypropyltrimonium chloride) can also be used.

[0074] Such products are sold, for example, under the trade names JAGUAR® C13 S, JAGUAR® C15, JAGUAR® C17 and JAGUAR® C162 by the company MEYHALL.

[0075] (5) Polymers comprising piperazinyl units and divalent alkylene or hydroxyalkylene groups comprising straight or branched chains, optionally interrupted by at least one entity chosen from oxygen, sulfur, nitrogen, aromatic rings and heterocyclic rings and also oxidation products and/or quaternization of these polymers. Such polymers are described, for example, in French patent Nos. 2 162 025 and 2 280 361.

[0076] (6) Water-soluble polyamino amides prepared, for example, by polycondensation of an acidic compound with a polyamine; these polyamino amides possibly being cross-linked with an entity chosen from epihalohydrins; diepoxides; dianhydrides; unsaturated dianhydrides; bi-unsaturated derivatives; bishalohydrins; bisazetidins; bishaloacidamines; bisalkyl halides; oligomers resulting from the reaction of a difunctional compound that is reactive with an entity chosen from bishalohydrins, bisazetidins, bishaloacyldiamines, bisalkyl halides, epihalohydrins, diepoxides and biunsaturated derivatives; the crosslinking agent being used in an amount ranging from 0.025 to 0.35 mol per amine group of the polyamino amide; these polyamino amides optionally being alkylated or, if they comprise at least one tertiary amine function, they can be quaternized. Such polymers are described, for example, in French patent Nos. 2 252 840 and 2 368 508.

[0077] (7) Polyamino amide derivatives resulting from the condensation of polyalkylene polyamines with polycarboxylic acids, followed by alkylation with difunctional agents, for example, adipic acid/polymer of dialkylaminohydroxyalkyldialkylenetriamine in which the alkyl group comprises from 1 to 4 atoms of carbon, such as methyl, ethyl and propyl groups and the alkylene group comprises from 1 to 4 carbon atoms, such as an ethylene group. Such polymers are described, for example, in French Patent No. 1 583 363. In at least one embodiment, these derivatives can be chosen from adipic acid/dimethylaminohydroxypropyldiethylenetriamine polymers.

[0078] (8) Polymers obtained by reacting a polyalkylene polyamine comprising two primary amine groups and at least one secondary amine group, with a dicarboxylic acid chosen from diglycolic acid and saturated aliphatic dicarboxylic acids comprising from 3 to 8 carbon atoms . The molar ratio of polyalkylene polyamine to dicarboxylic acid can range from 0.8:1 to 1.4:1; the polyamino amide resulting therefrom being reacted with the epichlorohydrin in a molar ratio of epichlorohydrin to secondary amine group of the polyamino amide ranging from 0.5:1 to 1.8:1. Such polymers are described, for example, in U.S. Pat. US 3,227,615 and 2,961,347.

[0079] (9) Alkyldiallylamine cyclopolymers and dialkyldiallyl-ammonium cyclopolymers, such as homopolymers and copolymers comprising, as the main constituent of the chain, at least one unit chosen from where: ket, which can be identical or different, are equal to 0 or 1, with the sum k + t equal to 1; R12 is chosen from hydrogen and methyl groups; R10 and R11, which may be identical or different, are chosen from alkyl groups comprising from 1 to 6 carbon atoms, hydroxyalkyl groups in which the alkyl group comprises, for example, from 1 to 5 carbon atoms, and amidoalkyl groups (C1-C4) lower, or R10 and R11 may form, together with the nitrogen atom to which they are attached, heterocyclic groups, such as piperidinyl and morpholinyl; and Y' is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulfate, bisulfite, sulfate and phosphate. Such polymers are described, for example, in French patent No. 2 080 759 and its certificate of addition 2 190 406.

[0080] In one embodiment, R10 and R11, which may be the same or different, are chosen from alkyl groups comprising from 1 to 4 carbon atoms.

[0081] Examples of such polymers include, but are not limited to, (co)polydiallyldialkyl ammonium chloride, such as dimethyldiallylammonium chloride homopolymer, sold under the name “MERQUAT® 100” by the company CALGON (and its weight average molecular weight counterparts low) and diallyldimethylammonium chloride and acrylamide copolymers sold under the name “MERQUAT® 550”.

[0082] Quaternary diammonium polymers comprising at least one repeating unit of formula (II): wherein: R13, R14, R15 and R16, which may be identical or different, are chosen from aliphatic, alicyclic and arylaliphatic groups comprising from 1 to 20 carbon atoms and lower aliphatic hydroxyalkyl groups or, alternatively, R13, R14, R15 and R16 may form, together or separately, with the nitrogen atoms to which they are attached, heterocycles optionally comprising a second heteroatom other than nitrogen or, alternatively, R13, R14, R15 and R16, which may be the same or different, are chosen from linear or branched C1-C6 alkyl groups substituted by at least one group chosen from nitrile groups, ester groups, acyl groups, amide groups, -CO-OR17-E groups, and -CO-NH-R17- groups E, wherein R17 is an alkylene group and E is a quaternary ammonium group; A1 and B1, which can be identical or different, are chosen from polymethylene groups comprising from 2 to 20 carbon atoms, which can be linear or branched, saturated or unsaturated and which can comprise, linked or interspersed in the main chain, at least one entity chosen from aromatic rings, oxygen groups, sulfur groups, sulfoxide groups, sulfone groups, disulfide groups, amino groups, alkylamino groups, hydroxyl groups, quaternary ammonium groups, ureido groups, amide groups and ester groups, and X - is an anion derived from an inorganic or organic acid; A1, R13, and R15 can form, together with the two nitrogen atoms to which they are attached, a piperazine ring; and A1 is chosen from straight or branched, saturated or unsaturated alkylene or hydroxyalkylene groups, B1 may be chosen from: -(CH2)n-CO-E'-OC-(CH2)n- where E ' is chosen from: a) glycol residues of the formula -OZO-, where Z is chosen from groups based on linear or branched hydrocarbons and groups of the following formulas: -(CH2-CH2-O)x- CH2-CH2- -[CH2-CH(CH3)-O]y-CH2-CH(CH3)- where x and y, which can be identical or different, are chosen from integers ranging from 1 to 4, which represent a defined and unique degree of polymerization, and numbers ranging from 1 to 4, which represent an average degree of polymerization; b) bis-minor diamine residue, such as piperazine derivatives; c) bis-primary diamine residues of formula -NH-Y-NH-, in which Y is chosen from groups based on linear or branched hydrocarbons and divalent groups -CH2-CH2-SS-CH2-CH2 --; and d) ureylene groups of formula -NH-CO-NH-.

[0083] In at least one embodiment, X- is an anion such as chloride or bromide.

[0084] Polymers of this type are described, for example, in French Patent Nos. 2 320 330; 2,270,846; 2,316,271; 2,336,434; and 2,413,907 and US Pat. US 2,273,780; 2,375,853; 2,388,614; 2,454,547; 3,206,462; 2,261,002; 2,271,378; 3,874,870; 4,001,432; 3,929,990; 3,966,904; 4,005,193; 4,025,617; 4,025,627; 4,025,653; 4,026,945; and 4,027,020.

[0085] Non-limiting examples of such polymers include those comprising at least one repeating unit of formula (III): wherein R13, R14, R15 and R16, which may be identical or different, are chosen from alkyl and hydroxyalkyl groups comprising from 1 to 4 carbon atoms, n and p, which may be identical or different, are integers ranging from 2 to 20, and X- is an anion derived from an inorganic or organic acid. (11) Polyquaternary ammonium polymers comprising units of formula (IV): where: R18, R19, R20 and R21, which may be identical or different, are chosen from hydrogen, methyl groups, ethyl groups, propyl groups, β-hydroxyethyl groups, β-hydroxypropyl groups, -CH2CH2(OCH2 CH2 )pOH, where p is chosen from integers ranging from 0 to 6, with the proviso that R18, R19, R20, and R21 are not simultaneously hydrogen, res, which may be identical or different, are chosen from from integers ranging from 1 to 6, q is chosen from integers ranging from 0 to 34, X- is an anion such as a halide, and A is chosen from dihalide radicals and -CH2-CH2- O-CH2-CH2-.

[0086] Such compounds are described, for example, in European Patent Application No. 0 122 324.

[0087] (12) Quaternary polymers of vinylpyrrolidone and vinylimidazole.

[0088] Other examples of suitable cationic polymers include, but are not limited to, cationic proteins and cationic protein hydrolysates, polyalkyleneimines such as polyethyleneimines, polymers comprising units chosen from vinylpyridine and vinylpyridinium units, polyamine and epichlorohydrin condensates, quaternary polyureylenes and chitin derivatives.

[0089] According to one embodiment of the present invention, the at least one cationic polymer is chosen from cellulose ether derivatives comprising quaternary ammonium groups, such as the products sold under the name “JR400” by the company UNION CARBIDE CORPORATION, cationic cyclopolymers, eg homopolymers and copolymers of dimethyldiallylammonium chloride sold under the names MERQUAT® 100, MERQUAT® 550 and MERQUAT® S by the company CALGON, 2,3-epoxypropyltrimethylammonium salt modified guar gums and quaternary polymers vinylpyrrolidone and vinylimidazole.

[0090] (13) Polyamines.

[0091] As a cationic polymer, it is also possible to use (co)polyamines, which can be homopolymers or copolymers, with a plurality of amino groups. The amino group can be a primary, secondary, tertiary or quaternary amino group. The amino group can be present on a polymer backbone or on a pendant group, if present, of (co)polyamines.

[0092] As an example of (co)polyamines, chitosan, (co)polyallylamines, (co)polyvinylamines, (co)polyanilines, (co)polyvinylimidazoles, (co)polydimethylaminoethylenemethacrylates, (co)polyvinylpyridines, such as (co) poly-1-methyl-2-vinylpyridines, (co)polyimines such as (co)polyethyleneimines, (co)polypyridines such as (co)poly(quaternary pyridines), (co)polybiguanides such as (co)polyaminopropyl biguanides, (co)polylysines, (co)polyornithines, (co)polyarginines, (co)polyhistidines, aminodextrans, aminocelluloses, amino (co)polyvinylacetals and salts thereof.

[0093] As with (co)polyamines, it is preferable to use (co)polylysines. Polylysine is well known. Polylysine can be a natural homopolymer of L-lysine that can be produced by bacterial fermentation. For example, the polylysine can be ε-Poly-L-lysine, typically used as a natural preservative in food products. Polylysine is a polyelectrolyte that is soluble in polar solvents such as water, propylene glycol and glycerol. Polylysine is commercially available in various forms such as poly D-lysine and poly L-lysine. The polylysine can be in salt and/or solution form.

[0094] (14) Cationic polyamino acids.

[0095] As a cationic polymer, it may be possible to use cationic polyamino acids, which may be cationic homopolymers or copolymers, having a plurality of amino groups and carboxyl groups. The amino group can be a primary, secondary, tertiary or quaternary amino group. The amino group may be present on a polymer backbone or on a pendant group, if present, of cationic polyamino acids. The carboxyl group may be present on a pendant group, if present, of the cationic polyamino acids.

[0096] As examples of cationic polyamino acids, we can mention cationized collagen, cationized gelatin, wheat protein hydrolyzed with hydroxypropyl steardimonium, wheat protein hydrolyzed with hydroxypropyl cocodimonium, conchiolin protein hydrolyzed with hydroxypropyltrimonium, soy protein hydrolyzed with hydroxypropyl steardimonium, soy protein hydrolyzed with hydroxypropyltrimonium, soy protein hydrolyzed with hydroxypropyl cocodimonium and the like.

[0097] It may be preferable that the cationic polymer is selected from the group consisting of alkyldiallylamine cyclopolymers and dialkyldiallylammonium cyclopolymers, such as (co)polydiallyldialkyl ammonium chloride, (co)polyamines, such as (co)polylysines, ( cationic co)polyamino acids such as cationized collagen, and salts thereof.

[0098] The amount of the cationic polymer(s) in the composition according to the present invention may be 0.001% by weight or more, preferably 0.1% by weight or more, and most preferably 1% by weight or more relative to the total weight of the composition.

[0099] The amount of cationic polymer(s) in the composition according to the present invention may be 25% by weight or less, preferably 20% by weight or less, and more preferably 15% by weight or less, in relation to the total weight of the composition.

[00100] The amount of the cationic polymer(s) in the composition according to the present invention can be from 0.001 to 25% by weight, preferably from 0.1 to 20% by weight, and more preferably from 1 to 15% by weight, relative to the total weight of the composition. (Anionic Polymer)

[00101] An anionic polymer has a positive charge density. The charge density of the anionic polymer can be from 0.1 meq/g to 20 meq/g, preferably from 1 to 15 meq/g, and more preferably from 4 to 10 meq/g if the anionic polymer is a synthetic anionic polymer, and the average degree of substitution of the anionic polymer can be from 0.1 to 3.0, preferably from 0.2 to 2.7, and more preferably from 0.3 to 2.5 if the anionic polymer is a natural anionic polymer .

[00102] It may be preferred that the molecular weight of the anionic polymer is 1000 or more, preferably 10000 or more, more preferably 50000 or more, and even more preferably 100000 or more.

[00103] The anionic polymer may have at least one negatively chargeable and/or negatively charged portion selected from the group consisting of a sulfuric group, a sulfate group, a sulfonic group, a sulfonate group, a phosphoric group, a phosphate group , a phosphonic group, a phosphonate group, a carboxylic group, and a carboxylate group.

[00104] The anionic polymer can be a homopolymer or a copolymer. The term "copolymer" is understood to mean both copolymers obtained from two types of monomers and those obtained from more than two types of monomers, such as terpolymers obtained from three types of monomers.

[00105] The anionic polymer can be selected from natural and synthetic anionic polymers.

[00106] The anionic polymer may comprise at least one hydrophobic chain.

[00107] The anionic polymer that can comprise at least one hydrophobic chain can be obtained by copolymerizing a monomer (a) chosen from carboxylic acids comprising a,e-ethylenic unsaturation (a' monomer) and 2-acrylamido- 2-methylpropanesulfonic acid (monomer a”) with a non-surfactant monomer (b) comprising an ethylenic unsaturation other than (a) and/or a monomer (c) comprising an ethylenic unsaturation resulting from the reaction of an acrylic monomer comprising an a,e-monoethylenic unsaturation or an isocyanate monomer comprising a monoethylenic unsaturation with a monohydric nonionic amphiphilic component or with a primary or secondary fatty amine.

[00108] Thus, the anionic polymer with at least one hydrophobic chain can be obtained by two synthetic routes: - by copolymerization of monomers (a') and (c), or (a'), (b) and (c), or (a”) and (c) or (a”), (b) and (c), - or by modification (and in particular esterification or amidation) of a copolymer formed from the monomers (a') or the monomers (a') and (b), or (a”) and (b), by a monohydric nonionic amphiphilic compound or a primary or secondary fatty amine.

[00109] Mention may in particular be made, as copolymers of 2-acrylamido-2-methylpropanesulfonic acid, one of those described in the article “Micelle formation of random copolymers of sodium 2 (acrylamido)-2 methylpropanesulfonate and nonionic surfactant macromonomer in water as studied by fluorescence and dynamic light scattering - Macromolecules, 2000, Vol. 33, No. 10 - 3694 3704” and in deposits EP-A-0 750 899 and EP-A-1 069 172.

[00110] The carboxylic acid comprising an a,e-monoethylenic unsaturation constituting the monomer (a') can be chosen from numerous acids and in particular from acrylic acid, methacrylic acid, crotonic acid, itaconic acid and maleic acid . It is preferably acrylic or methacrylic acid.

[00111] The copolymer may comprise a monomer (b) comprising a monoethylenic unsaturation which does not have a surfactant property. Preferred monomers are those which give water-insoluble polymers when homopolymerized. They can be chosen, for example, from C1-C4 alkyl acrylates and methacrylates, such as methyl acrylate, ethyl acrylate, butyl acrylate or the corresponding methacrylates. More particularly preferred monomers are methyl acrylate and ethyl acrylate. The other monomers that can be used are, for example, styrene, vinyl toluene, vinyl acetate, acrylonitrile and vinylidene chloride. Non-reactive monomers are preferred, such monomers being those in which the single ethylene group is the only group that is reactive under the conditions of polymerization. However, monomers comprising groups that react under the effect of heat, such as hydroxyethyl acrylate, can optionally be used.

[00112] The monomer (c) is obtained by reacting an acrylic monomer comprising a,e-monoethylenic unsaturation, such as (a), or an isocyanate monomer comprising monoethylenic unsaturation with a monohydric nonionic amphiphilic compound or a primary fatty amine or secondary.

[00113] The non-ionic monohydric amphiphilic compounds or the primary or secondary fatty amines used to produce the non-ionic monomer (c) are well known. Monohydric nonionic amphiphilic compounds are generally alkoxylated hydrophobic compounds comprising an alkylene oxide forming the hydrophilic part of the molecule. Hydrophobic compounds are generally composed of an aliphatic alcohol or an alkylphenol, wherein compounds of a carbonaceous chain comprising at least six carbon atoms constitute the hydrophobic part of the amphiphilic compound.

[00114] Preferred monohydric non-ionic amphiphilic compounds are compounds with the following formula (V): R-(OCH2CHR')m-(OCH2 CH2)n-OH (V) in which R is chosen from alkyl or alkylene groups comprising from 6 to 30 carbon atoms and alkylaryl groups with alkyl radicals comprising from 8 to 30 carbon atoms, R' is chosen from alkyl groups comprising from 1 to 4 carbon atoms, n is an average number ranging from approximately 1 a 150 and m is an average number ranging from approximately 0 to 50, provided that n is at least as large as m.

[00115] Preferably, in the compounds of formula (V), the group R is chosen from alkyl groups comprising from 12 to 26 carbon atoms and alkylphenyl groups in which the alkyl group is C8-C13; the R' group is the methyl group; m = 0 and n = 1 to 25.

[00116] Preferred primary and secondary fatty amines are composed of one or two alkyl chains comprising from 6 to 30 carbon atoms.

[00117] The monomer used to form the nonionic urethane monomer (c) can be chosen from highly varied compounds. Use may be made of any compound comprising a copolymerizable unsaturation, such as an acrylic, methacrylic or allylic unsaturation. The monomer (c) can be obtained in particular from an isocyanate comprising a monoethylenic unsaturation, such as, in particular, α,α-dimethyl-m-isopropenylbenzyl isocyanate.

[00118] The monomer (c) can be chosen, in particular, from acrylates, methacrylates or itaconates of C6-C30 oxyethylenated fatty alcohol (1-50 EO), such as steareth-20 methacrylate, oxyethylenated behenyl methacrylate (25 EO), oxyethylene monoacetyl itaconate (20 EO), oxyethylenated monostearyl itaconate (20 EO) or the acrylate modified by polyoxyethylene C12-C24 alcohols (25 EO) and oxyethylenated C6-C30 fatty alcohol dimethyl-m-isopropenylbenzyl isocyanates ( 1-50 EO), such as, in particular, oxyethylenated behenyl alcohol dimethyl-m-isopropenylbenzyl isocyanate.

[00119] According to a specific embodiment of the present invention, the anionic polymer is chosen from acrylic terpolymers obtained from (a) a carboxylic acid comprising an a,e-ethylenic unsaturation, (b) a non-alcoholic monomer surface active comprising an ethylenic unsaturation other than (a), and (c) a nonionic urethane monomer which is the reaction product of a monohydric nonionic amphiphilic compound with an isocyanate comprising a monoethylenic unsaturation.

[00120] It can be mentioned, in particular, as anionic polymers comprising at least one hydrophobic chain, of the terpolymer of acrylic acid / ethyl acrylate / alkyl acrylate, such as the product with a 30% aqueous dispersion sold under the name Acusol 823 by Rohm &Haas; acrylates/steareth-20 methacrylate copolymer, such as the product sold under the name Aculyn 22 by Rohm &Haas; (meth)acrylic acid/ethyl acrylate/behenyl methacrylate oxyethylene (25 EO) terpolymer as the product to an aqueous emulsion sold under the name Aculyn 28 by Rohm &Haas; acrylic acid/oxyethylenated monoacetyl itaconate copolymer (20 EO), such as the product with a 30% aqueous dispersion sold under the name Structure 3001 by National Starch; acrylic acid/oxyethylenated monostearyl itaconate copolymer (20 EO), such as the product with a 30% aqueous dispersion, sold under the name Structure 2001 by National Starch; the acrylates/acrylate modified by C12-C24 alcohol polyoxyethylene (25 EO) copolymer, such as the 30-32% latex copolymer sold under the name Synthalen W2000 by 3V SA; or the methacrylic acid/methyl acrylate/dimethyl-meta-isopropenylbenzyl isocyanate of ethoxylated behenyl alcohol terpolymer as the product with a 24% aqueous dispersion and comprising 40 ethylene oxide groups disclosed in EP-A-0 173 109.

[00121] Anionic polymers can also be Polyester-5, such as the product sold under the name of Eastman AQ™ 55S Polymer by EASTMAN CHEMICAL with a chemical formula below. A: dicarboxylic acid moiety G: glycol moiety SO3-Na+: sodium sulfo group OH: hydroxyl group.

[00122] It may be preferred that the anionic polymer is selected from the group consisting of polysaccharides such as alginic acid, hyaluronic acid and cellulose polymers (eg carboxymethylcellulose), anionic (co)polyamino acids such as (co)polyglutamic acids, (co)poly(meth)acrylics, (co)polyamic acids, (co)polystyrene sulfonate, (co)poly(vinyl sulfate), dextran sulfate, chondroitin sulfate, (co)polymaleic acids, (co)polyfumaric acids , maleic acid (co)polymers, and salts thereof.

[00123] The maleic acid copolymer may comprise one or more co-monomers of maleic acid and one or more co-monomers chosen from vinyl acetate, vinyl alcohol, vinylpyrrolidone, olefins comprising from 2 to 20 carbon atoms and styrene .

[00124] Thus, "maleic acid copolymer" means any polymer obtained by copolymerizing one or more co-monomers of maleic acid and one or more co-monomers chosen from vinyl acetate, vinyl alcohol, vinylpyrrolidone, olefins comprising from 2 to 20 carbon atoms, such as octadecene, ethylene, isobutylene, diisobutylene or isooctylene and styrene, the co-monomers of maleic acid optionally being partially or completely hydrolysed. Preferably, hydrophilic polymers will be used, i.e. polymers with a solubility in water greater than or equal to 2 g/l.

[00125] In an advantageous aspect of the present invention, the maleic acid copolymer may have a molar portion of maleic acid units between 0.1 and 1, more preferably between 0.4 and 0.9.

[00126] The weight average molar mass of the maleic acid copolymer may be between 1,000 and 500,000, and preferably between 1,000 and 50,000.

[00127] It is preferred that the maleic acid copolymer is a styrene/maleic acid copolymer, and more preferably sodium styrene/maleic acid copolymer.

[00128] Preferably, a copolymer of styrene and maleic acid in a 50/50 ratio will be used.

[00129] For example, the styrene/maleic acid copolymer (50/50), in the form of a 30% ammonium salt in water, sold under the reference SMA1000H® by Cray Valley, or the styrene copolymer / maleic acid (50/50), as a 40% sodium salt in water, sold under Cray Valley part number SMA1000HNa®.

[00130] The use of styrene/maleic acid copolymer, such as sodium styrene/maleic acid copolymer, can improve the wettability of a film prepared by the composition according to the present invention.

[00131] The amount of anionic polymer(s) in the composition according to the present invention may be 0.001% by weight or more, preferably 0.1% by weight or more, and more preferably 1% by weight or more, in relation to the total weight of the composition.

[00132] The amount of anionic polymer(s) in the composition according to the present invention may be 25% by weight or less, preferably 20% by weight or less, and more preferably 15% by weight or less, in relation to the total weight of the composition.

[00133] The amount of anionic polymer(s) in the composition according to the present invention may be from 0.001 to 25% by weight, preferably from 0.1 to 20% by weight, and more preferably from 1 to 15% by weight, based on the total weight of the composition. (Amphoteric polymer)

[00134] An amphoteric polymer has a positive charge density and a negative charge density.

[00135] The positive charge density of the amphoteric polymer may be from 0.01 meq/g to 20 meq/g, preferably from 0.05 to 15 meq/g, and more preferably from 0.1 to 10 meq/g.

[00136] The negative charge density of the amphoteric polymer may be from 0.01 meq/g to 20 meq/g, preferably from 0.05 to 15 meq/g, and more preferably from 0.1 to 10 meq/g.

[00137] It may be preferred that the molecular weight of the amphoteric polymer is 500 or more, preferably 1000 or more, more preferably 2000 or more, and even more preferably 5000 or more.

[00138] Unless otherwise defined in the descriptions, “molecular weight” means a number average molecular weight.

[00139] The amphoteric polymer may have at least one positively chargeable and/or positively charged portion selected from the group consisting of a primary, secondary or tertiary amino group, a quaternary ammonium group, a guanidine group, a biguanide group, an imidazole group, an imino group and a pyridyl group, and at least one negatively chargeable and/or negatively charged moiety selected from the group consisting of a sulfuric group, a sulfate group, a sulfonic group, a sulfonate group, a phosphoric group, a phosphate group, a phosphonic group, a phosphonate group, a carboxylic group, and a carboxylate group.

[00140] The amphoteric polymer may be a homopolymer or a copolymer. The term "copolymer" is understood to mean both copolymers obtained from two types of monomers and those obtained from more than two types of monomers, such as terpolymers obtained from three types of monomers.

[00141] The amphoteric polymers that can be used according to the present invention can be chosen from polymers that contain K and M units randomly distributed in the polymeric chain, where K indicates a unit that is derived from a monomer containing at least one basic nitrogen atom and M denotes a unit that is derived from an acidic monomer containing one or more carboxylic or sulfonic groups or, alternatively, K and M may denote groups that are derived from zwitterionic monomers of carboxybetines or sulfobetaines. K and M may also denote a cationic polymeric chain containing primary, secondary, tertiary or quaternary amine groups, in which at least one of the amine groups carries a carboxylic or sulfonic group linked through a hydrocarbon radical or, alternatively, K and M are part of a polymer chain with an α,β-ethylene dicarboxylic unit in which one of the carboxylic groups has been reacted with a polyamine containing one or more primary or secondary amine groups.

[00142] The amphoteric polymers corresponding to the definition given above which are more particularly preferred are chosen from the following polymers: (1) Polymers resulting from the copolymerization of a monomer derived from a vinyl compound containing a carboxylic group, as more particularly acid acrylic, methacrylic acid, maleic acid, alpha-chloroacrylic acid and a basic monomer derived from a substituted vinyl compound containing at least one basic atom, such as more particularly dialkylaminoalkyl methacrylate and acrylate, dialkylaminoalkylmethacrylamide and acrylamide. Such compounds are described in US Patent No. 3,836,537. Mention may also be made of sodium acrylate/acrylamidopropyltrimethylammonium chloride copolymer sold under the name POLYQUART KE 3033 by the company HENKEL. The vinyl compound can also be a dialkyldiallylammonium salt, such as dimethyldiallylammonium chloride. Copolymers of acrylic acid and the latter monomer are supplied under the names MERQUAT 280, MERQUAT 295, MERQUAT 2003 PR, MERQUAT 3330 PR and MERQUAT PLUS 3330 by the company Lubrizol; (2) Polymers containing units derived from: a) at least one monomer chosen from acrylamides or methacrylamides substituted on nitrogen by an alkyl radical, b) at least one acid co-monomer containing one or more reactive carboxylic groups, and c ) at least one basic comonomer, such as esters with primary, secondary, tertiary and quaternary amine substituents of acrylic and methacrylic acids and the quaternization product of dimethylaminoethyl methacrylate with dimethyl or diethyl sulfate.

[00143] The most particularly preferred N-substituted acrylamides or methacrylamides according to the invention are groups whose alkyl radicals contain from 2 to 12 carbon atoms and more particularly N-ethylacrylamide, N-tert-butylacrylamide, N-tert-octylacrylamide, N-octylacrylamide, N-decylacrylamide, N-dodecylacrylamide, as well as the corresponding methacrylamides.

[00144] The acid co-monomers are chosen more particularly from acrylic, methacrylic, crotonic, itaconic, maleic and fumaric acids, as well as the alkyl monoesters having 1 to 4 carbon atoms of anhydrides or maleic or fumaric acids.

[00145] Preferred basic comonomers are aminoethyl, butylaminoethyl, N,N'-dimethylaminoethyl, N-tert-butylaminoethyl methacrylates.

[00146] Particularly used are copolymers whose CTFA name (4th ed. 1991) is octylacrylamide/acrylates/butylaminoethylmethacrylate copolymer, such as products sold under the name AMPHOMER or LOVOCRYL 47 by the company NATIONAL STARCH.

[00147] (3) Partially or completely alkylated and cross-linked polyamino amides derived from polyamino amides of the following general formula: -[-CO-R4-CO-Z-]- in which R4 represents a divalent radical derived from a dicarboxylic acid saturated acid, a mono- or dicarboxylic aliphatic acid with an ethylenic double bond, an ester of a lower alkanol having 1 to 6 carbon atoms of these acids or a radical deriving from the addition of any of the said acids with a bis-primary amine -NH-[(CH2 )x-NH-]p- where x = 2 and p = 2 or 3, or alternatively x = 3 and p = 2, this radical being derived from diethylenetriamine, triethylenetetraamine or dipropylenetriamine; b) in proportions from 0 to 40% in mol, the radical (IV) above, in which x = 2 and p = 1 and which is derived from ethylenediamine or the radical which is derived from piperazine: c) in proportions from 0 to 20 mol%, the -NH-(CH2)6-NH- radical derived from hexamethylenediamine, these polyamino amines being crosslinked by adding a bifunctional crosslinking agent chosen from epihalohydrins, diepoxides, dianhydrides, bis-unsaturated derivatives, using 0.025 to 0.35 mol of crosslinking agent per amine group of the polyamino amide and alkylated by the action of acrylic acid, chloroacetic acid or an alkanesulfone or salts thereof.

[00148] Saturated carboxylic acids are preferably chosen from acids with 6 to 10 carbon atoms, such as adipic acid, 2,2,4-trimethyladipic and 2,4,4-trimethyladipic acid, terephthalic acid, acids with a double bond of ethylene, such as acrylic, methacrylic and itaconic acids.

[00149] The alkanesultones used in the alkylation are preferably propane or butanesultone, and the salts of the alkylating agents are preferably the sodium or potassium salts.

[00150] (4) Polymers containing zwitterionic units of formula: wherein R5 designates a polymerizable unsaturated group such as an acrylate, methacrylate, acrylamide or methacrylamide group, y and z represent an integer from 1 to 3, R6 and R7 represent a hydrogen atom, methyl, ethyl or propyl, R8 and R9 represent a hydrogen atom or an alkyl radical such that the sum of the carbon atoms in R8 and R9 must not exceed 10.

[00151] The polymers comprising these units may also comprise units derived from non-zwitterionic monomers, such as dimethyl or diethylaminoethyl acrylate or methacrylate or alkyl acrylates or methacrylates, acrylamides or methacrylamides or vinyl acetate.

[00152] By way of example, mention may be made of butyl methacrylate/dimethylcarboxymethylammonioethyl methacrylate copolymer such as the product sold under the name DIAFORMER Z301 by the company SANDOZ.

[00153] (5) Polymers derived from chitosan containing monomeric units corresponding to the following formulas (VI), (VII) and (VIII): the unit (VI) being present in proportions from 0 to 30%, the unit (VII) in proportions from 5 to 50% and the unit (VIII) in proportions from 30 to 90%, it being understood that in this unit (VIII) , R10 represents a radical of formula: in which if q = 0, R11, R12 and R13, identical or different, each represent a hydrogen atom, a methyl, hydroxyl, acetoxy group or amino residue, a monoalkylamine residue or a dialkylamine residue optionally interrupted by one or more of nitrogen atoms and/or optionally substituted by one or more amino, hydroxyl, carboxyl, alkylthio or sulfonic groups, or an alkylthio residue whose alkyl group carries an amino residue, at least one of the radicals R11, R12 and R13 being in this case one hydrogen atom; or if q = 1, R11, R12 and R13 each represent a hydrogen atom, as well as the salts formed by these compounds with bases or acids.

[00154] (6) Polymers derived from N-carboxyalkylation of chitosan, such as N-carboxymethyl chitosan or N-carboxybutyl chitosan, sold under the name “EVALSAN” by the company JAN DEKKER.

[00155] (7) Polymers corresponding to the general formula (IX), such as those described, for example, in French patent 1,400,366: wherein R14 denotes a hydrogen atom, a CH3O, CH3CH2O or phenyl radical, R15 denotes hydrogen or a lower alkyl radical such as methyl or ethyl, R16 denotes hydrogen or a lower alkyl radical such as methyl or ethyl, R17 denotes a lower alkyl radical such as methyl or ethyl or a radical corresponding to the formula: -R18-N(R16)2, R18 represents a group -CH2-CH2-, -CH2-CH2-CH2- or -CH2-CH(CH3)-, R16 with the meanings mentioned above, as well as the larger homologues of these radicals and containing up to 6 carbon atoms.

[00156] (8) Amphoteric polymers of the -DXDX- type, chosen from: a) polymers obtained by the action of chloroacetic acid or sodium chloroacetate on compounds containing at least one unit of formula: -DXDXD- (X) where D denotes a radical and X denotes the symbol E or E', E or E', which are the same or different, denote a bivalent radical which is an alkylene radical with a straight or branched chain containing up to 7 carbon atoms in the main chain which is unsubstituted or substituted by hydroxyl groups and which may also contain oxygen, nitrogen or sulfur atoms, 1 to 3 aromatic and/or heterocyclic rings; oxygen, nitrogen and sulfur atoms present in the form of ether, thioether, sulfoxide, sulphone, sulphonium, alkylamine or alkenylamine groups, or hydroxyl, benzylamine, amine oxide, quaternary ammonium, amide, imide, alcohol, ester and/or urethane; b) Polymers of formula: -DXDX- (XI) where D denotes a radical and X denotes the symbol E or E' and, at least once, E'; E with the meaning indicated above and E' is a bivalent radical which is an alkylene radical with a straight or branched chain with up to 7 carbon atoms in the main chain, which is unsubstituted or substituted by one or more hydroxyl radicals and containing one or more nitrogen atoms, the nitrogen atom being replaced by an alkyl chain optionally interrupted by an oxygen atom and necessarily containing one or more carboxyl functional groups or one or more hydroxyl functional groups and betainized by reaction with chloroacetic acid or sodium chloroacetate.

[00157] (9) (C1-C5)alkyl vinyl ether/maleic anhydride copolymers partially modified by semiamidation with a N,N-dialkylaminoalkylamine such as N,N-dimethylaminopropylamine or by semi-esterification with a N,N-dialkanolamine. These copolymers may also contain other vinyl co-monomers such as vinylcaprolactam.

[00158] Particularly preferred amphoteric polymers according to the invention are those of the family (1), particularly those containing a dialkyldiallyl ammonium salt as a cationic monomer.

[00159] The amphoternium polymers may consist of polyquaternium-22, polyquaternium-39, polyquaternium-53, polyquaternium-64, polyquaternium-51, polyquaternium-61 and mixtures thereof. Polyquaternium-39 and Polyquaternium-53, for example, the product Merquat 3330 PR and Merquat 2003 PR, sold by Lubrizol, are more preferable.

[00160] The amount of the amphoteric polymer(s) in the composition according to the present invention may be 0.001% by weight or more, preferably 0.1% by weight or more, and more preferably 1% by weight or more. more, in relation to the total weight of the composition.

[00161] The amount of the amphoteric polymer(s) in the composition according to the present invention may be 25% by weight or less, preferably 20% by weight or less, and more preferably 15% by weight or less, relative to the total weight of the composition.

[00162] The amount of the amphoteric polymer(s) in the composition according to the present invention can be from 0.001 to 25% by weight, preferably from 0.1 to 20% by weight, and more preferably from 1 to 15% by weight, based on the total weight of the composition. [Oil]

[00163] The composition according to the present invention comprises (b) at least one oil. If two or more oils (b) are used, they can be the same or different.

[00164] Here, “oil” means a fatty compound or substance that is in the form of a liquid or a 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 with them. These oils can be volatile or non-volatile.

[00165] 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 or animal oil and an ester oil or an ether oil; or a mixture thereof.

[00166] The oil can be selected from the group consisting of vegetable or animal oils, synthetic oils, silicone oils, hydrocarbon oils and fatty alcohols.

[00167] Examples of vegetable oils include, for example, linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, oil castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil and mixtures thereof.

[00168] As examples of animal oils, one can mention, for example, squalene and squalane.

[00169] As examples of synthetic oils, one can mention alkane oils such as isododecane and isohexadecane, ester oils, ether oils and artificial triglycerides.

[00170] Ester oils are preferably liquid esters of linear or branched, saturated or unsaturated C1-C26 aliphatic mono or polyalcohols C1-C26 aliphatic acids, and of linear or branched C1-C26 aliphatic polyalcohols or polyalcohols, saturated or unsaturated, the total number of atoms of the esters being greater than or equal to 10.

[00171] Preferably, for esters of monoalcohols, at least one of the alcohol and the acid from which the esters of the present invention are derived is branched.

[00172] Among the monoesters of monoacids and monoalcohols, one can mention ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2 -ethylhexyl isononanoanoate, isonononate and isostearyl neopentanoate.

[00173] Esters of dicarboxylic or tricarboxylic acids C4 C22 and alcohols C1-C22, and esters of monocarboxylic, dicarboxylic or tricarboxylic acids and non-sugar dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols C4-C26 can also be used.

[00174] Special mention may be made of: 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; triocyldodecyl citrate; trioleyl citrate; neopentyl glycol diheptanoate; diethylene glycol diisononanoate.

[00175] As ester oils, sugar esters and diesters of C6-C30 and preferably C12-C22 fatty acids can be used. It is recalled that the term "sugar" means compounds based on hydrocarbons 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.

[00176] 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.

[00177] The sugar esters of fatty acids can be chosen especially from the group comprising the esters or mixtures of sugar esters described above and C6-C30 fatty acids, saturated or unsaturated, linear or branched, and preferably C12 -C22. If they are unsaturated, these compounds can have one to three conjugated or non-conjugated carbon-carbon double bonds.

[00178] The esters according to this variant can also be selected from monoesters, diesters, triesters, tetraesters and polyesters, and mixtures thereof.

[00179] These esters can be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linolates, linolenates, caprates and arachidonates, or mixtures thereof, such as, in particular, mixed esters of oleopalmitate, oleostearate and palmitostearate , as well as tetraethyl pentaerythrityl hexanoate.

[00180] More particularly, monoesters and diesters are used and especially sucrose, glucose or methylglucose monooleates or dioleates, stearates, behenates, oleopalmitates, linoleates, linolenates and oleostearates.

[00181] An example that can be mentioned is the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

[00182] As examples of preferable ester oils, there may be mentioned, for example, diisopropyl adipate, dioctyl adipate, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, octyldodecyl neopentanoate, isodecyl, 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 isononanoane , ethylhexyl palmitate, isohexyl laurate, hexyl laurate, isocetyl stearate, isopropyl isostearate, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), pentaerythyl tetra(2-ethylhexanoate), 2- -ethylhexyl, diethyl sebacate and mixtures thereof.

[00183] As examples of artificial triglycerides, mention may be made, for example, of caprylyl capryl glycerides, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, tri(caprate / glyceryl caprylate) and glyceryl tri(caprate/caprylate/linolenate).

[00184] As examples of silicone oils, mention may be made, for example, of linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane and the like; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane and the like; and mixtures thereof.

[00185] Preferably, the silicone oil is chosen from liquid polydialkylsiloxanes, especially liquid polydimethylsiloxanes (PDMS) and liquid polyorganosiloxanes comprising at least one aryl group.

[00186] These silicone oils can also be organomodified. The organomodified silicones that can be used according to the present invention are silicone oils, as defined above and that comprise in their structure one or more organofunctional groups linked through a group based on hydrocarbons.

[00187] Organopolysiloxanes are defined in more detail in Walter Noll's Chemistry and Technology of Silicones (1968), Academic Press. They can be volatile or non-volatile.

[00188] When they are volatile, silicones are chosen more particularly from those with a boiling point between 60 °C and 260 °C, and even more particularly from: (i) cyclic polydialkylsiloxanes comprising from 3 to 7 and preferably 4 to 5 silicon atoms. These are, for example, octamethylcyclotetrasiloxane sold privately under the name Volatile Silicone® 7207 by Union Carbide or Silbione® 70045 V2 by Rhodia, decamethylcyclopentasiloxane sold under the name Volatile Silicone® 7158 by Union Carbide, Silbione® 70045 V5 by Rhodia and dodecamethylcyclopentasiloxane sold under the name Silsoft 1217 by Momentive Performance Materials and blends thereof. Cyclocopolymers of the dimethylsiloxane/methylalkylsiloxane type can also be mentioned, such as Silicone Volatile® FZ 3109, sold by the company Union Carbide, with the formula:

[00189] Mixtures of cyclic polydialkylsiloxanes with organosilicon compounds can also be mentioned, such as the mixture of octamethylcyclotetrasiloxane and tetratrimethylsilylpentaerythritol (50/50) and the mixture of octamethylcyclotetrasiloxane and oxy-1,1'-bis(2,2,2', 2',3,3'-hexatrimethylsilyloxy)neopentane; and (11) linear volatile polydialkylsiloxanes containing 2 to 9 silicon atoms and having a viscosity less than or equal to 5 x 10 -6 m 2 /sec at 25 °C. An example is decamethyltetrasiloxane sold privately under the name SH 200 by the company Toray Silicone. Silicones belonging to this category are also described in the article published in Cosmetics and Toiletries, vol. 91, Jan. 76, pp. 27-32, Todd & Byers, Volatile Silicone Fluids for Cosmetics. The viscosity of silicones is measured at 25 °C, according to ASTM 445, appendix C.

[00190] Non-volatile polydialkylsiloxanes can also be used. These non-volatile silicones are more particularly chosen from polydialkylsiloxanes, among which polydimethylsiloxanes containing trimethylsilyl end groups may be mentioned in particular.

[00191] Among these polydialkylsiloxanes, the following commercial products can be mentioned, without limitation: - Silbione ® oils from series 47 and 70 047 or Mirasil® oils sold by Rhodia, for example, oil 70 047 V 500 000; - oils from the Mirasil® series sold by the company Rhodia; - Dow Corning's 200 series oils, such as DC200, with a viscosity of 60 000 mm2/s; and - General Electric's Viscasil ® oils and certain General Electric SF series oils (SF 96, SF 18).

[00192] It is also possible to mention polydimethylsiloxanes containing final groups of dimethylsilanol known under the name dimethiconol (CTFA), such as the 48 series oils of the company Rhodia.

[00193] Among the silicones containing aryl groups, mention may be made of polydiarylsiloxanes, especially polydiphenylsiloxanes and polyalkylarylsiloxanes, such as phenyl silicone oil.

[00194] Phenyl silicone oil can be chosen from phenyl silicones of the following formula: in which R1 to R10, independently of one another, are saturated or unsaturated, linear, cyclic or branched C1-C30 hydrocarbon-based radicals, preferably C1-C12 hydrocarbon-based radicals, and more preferably C1-C12 hydrocarbon-based radicals. C1-C6 hydrocarbons, in particular methyl, ethyl, propyl or butyl radicals, in, n, p and q are, independently of one another, integers from 0 to 900 inclusive, preferably 0 to 500 inclusive, and more preferably 0 to 100 inclusive, with the condition that the sum n + m + q is different from 0.

[00195] Examples that may be mentioned include products sold under the following names: - Rhodia series 70 641 Silbione® oils; - oils from the Rhodorsil® 70 633 and 763 series by Rhodia; - Dow Corning 556 Cosmetic Grade Fluid oil by Dow Corning; - Bayer's PK series silicones, such as the product PK20; - certain General Electric SF series oils such as SF 1023, SF 1154, SF 1250 and SF 1265.

[00196] As phenyl silicone oil, phenyl trimethicone is preferred (R1 to R10 are methyl; p, q and n = 0; m = 1 in the above formula).

[00197] Organomodified liquid silicones may contain especially polyethyleneoxy and/or polypropyleneoxy groups. Thus, the KF-6017 silicone proposed by Shin-Etsu and the Silwet® L722 and L77 oils by the Union Carbide company can be mentioned.

[00198] The hydrocarbon oils can be chosen from: - lower alkanes C6-C16 linear or branched, optionally cyclic. Examples which may be mentioned include hexane, undecane, dodecane, tridecane and isoparaffins, for example isohexadecane, isododecane and isodecane; and - linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffins, liquid vaseline, hydrogenated polydecenes and polyisobutenes such as Parleam®, and squalane.

[00199] As preferable examples of hydrocarbon oils, mention may be made, for example, of linear or branched hydrocarbons such as isohexadecane, isododecane, squalane, mineral oil (for example, liquid paraffin), paraffin, vaseline or petrolatum, naphthalenes and the like ; hydrogenated polyisobutene, isoeicosane and decene/butene copolymer; and mixtures thereof.

[00200] 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 included in the scope of fatty alcohols. Fatty alcohol can be saturated or unsaturated. The fatty alcohol can be linear or branched.

[00201] The fatty alcohol may have the structure R-OH in which 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 selected from C12-C20 alkyl and C12-C20 alkenyl groups. R may or may not be substituted by at least one hydroxyl group.

[00202] As examples of fatty alcohol, mention may be made of lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, oleyl alcohol, linoleyl alcohol, palmitolyl alcohol, arachidonyl alcohol , erucyl alcohol and mixtures thereof.

[00203] It is preferred that the fatty alcohol is a saturated fatty alcohol.

[00204] Thus, the fatty alcohol can be selected from saturated or unsaturated, linear or branched C6-C30 alcohols, preferably saturated, linear or branched C6-C30 alcohols, and more preferably saturated, linear or branched C12-C20 alcohols .

[00205] The term “saturated fatty alcohol” here means an alcohol with a long saturated aliphatic carbon chain. It is preferred that the saturated fatty alcohol be selected from any linear or branched C6-C30 saturated fatty alcohols. Among the linear or branched saturated C6-C30 fatty alcohols, linear or branched C12-C20 saturated fatty alcohols can be preferably used. Any saturated, linear or branched C16-C20 fatty alcohols can be used with greater preference. Branched C16-C20 fatty alcohols can be even more preferably used.

[00206] As examples of saturated fatty alcohols, mention may be made of 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.

[00207] 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.

[00208] It is preferable that the oil (b) is chosen from polar oils, more preferably from ester oils, artificial triglycerides and mixtures thereof, and even more preferably from ester oils, artificial triglycerides and mixtures different than organic lipophilic UV filters, in particular ethylhexylmethoxycinnamate.

[00209] According to the present invention, the oil (b) can be surrounded by a plurality of particles (a) or the oil (b) can be present in the void of a capsule formed by the particles (a). In other words, the oil (b) can be covered by the particles (a), or a capsule formed by the particles (a) includes the oil (b) in the void of the capsule.

[00210] The oil (b) that is surrounded by the particles (a) or present in the void of the capsule formed by the particles (a) cannot make direct contact with a keratin substance, such as the skin. Thus, even if the oil (b) has a sticky or greasy wearing feel, the composition according to the present invention may not give a sticky or greasy wearing feel.

[00211] The amount of oil(s) (b) in the composition according to the present invention may be 0.01% by weight or more, preferably 0.1% by weight or more, and more preferably 1% by weight or more relative to the total weight of the composition.

[00212] The amount of oil(s) (b) in the composition according to the present invention may be 50% by weight or less, preferably 40% by weight or less, and more preferably 35% by weight or less, in relation to the total weight of the composition.

[00213] The amount of oil(s) (b) in the composition according to the present invention can be from 0.01 to 50% by weight, preferably from 0.1 to 40% by weight, and more preferably from 1 to 35% by weight, relative to the total weight of the composition. [Water]

[00214] The composition according to the present invention comprises (c) water.

[00215] The amount of (c) water may be 40% by weight or more, preferably 50% by weight or more, and more preferably 60% by weight or more, relative to the total weight of the composition.

[00216] The amount of (c) water may be 90% by weight or less, preferably 80% by weight or less, and more preferably 70% by weight or less, relative to the total weight of the composition.

[00217] The amount of water (c) may be from 40 to 90% by weight, preferably from 50 to 80% by weight, and more preferably from 60 to 70% by weight, relative to the total weight of the composition. (Non-Polymeric Acid with Two or More Acid Dissociation Constants)

[00218] The composition according to the present invention may include at least one non-polymeric acid with two or more pKa values or salt(s), that is, at least one non-polymeric acid with two or more constants or salt(s) ) of acid dissociation 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.

[00219] Non-polymeric acid with two or more pKa values or salt(s) thereof(s) may be included in particle (a). Non-polymeric acid with two or more pKa values can function as a crosslinker for cationic polymer, anionic polymer and amphoteric polymers.

[00220] The term “non-polymeric” here means that the acid is not obtained by polymerizing two or more monomers. Therefore, non-polymeric acid does not correspond to an acid obtained by polymerizing two or more monomers, such as polycarboxylic acid.

[00221] It is preferred that the molecular weight of the non-polymeric acid having two or more pKa values or salt(s) thereof is 1000 or less, preferably 800 or less, and most preferably 700 or less.

[00222] There is no limit to the type of non-polymeric acid with two or more pKa values or salt(s) thereof. Two or more different types of non-polymeric acids with two or more pKa values or salts thereof can be used in combination. Thus, a single type of non-polymeric acid with two or more pKa values or a salt thereof or a combination of different types of non-polymeric acids with two or more pKa values or salts thereof can be used.

[00223] The term "salt" in this specification means a salt formed by adding suitable base(s) to non-polymeric acid having two or more pKa values, which can be obtained from a reaction with the n non-polymeric acid having two or more pKa values with the base(s) according to methods known to those skilled in the art. As salt, there can be mentioned metal salts, 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.

[00224] The non-polymeric acid with two or more pKa values or salt(s) thereof may be an organic acid or salt(s) thereof, and preferably an acid or hydrophilic or water-soluble organic salt or salt(s) thereof.

[00225] Non-polymeric acid having two or more pKa values may have at least two acid groups 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.

[00226] The non-polymeric acid with two or more pKa values may be a non-polymeric polyvalent acid.

[00227] The non-polymeric acid having two or more pKa values may be selected from the group consisting of dicarboxylic acids, disulfonic acids, and diphosphoric acids, and a mixture thereof.

[00228] Non-polymeric acid with two or more pKa values or salt(s) thereof may be selected from the group consisting of oxalic acid, malonic acid, succinic acid, glutaric acid, acid adipic acid, pimelic acid, suberic acid, azelaic acid, sebatic 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; terephthalilidene 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), Yellow 203 (Quinoline Yellow WS), Green 201 (Alizanine Cyanine Green F), Green 204 (Pyranine Conc), Green 205 (Light 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.

[00229] It may be preferable that the non-polymeric acid with two or more pKa values or salt(s) thereof is selected from the group consisting of terephthalylidene dicamphor sulfonic acid and salts thereof (Mexoryl SX), Yellow 6 (Sunset Yellow FCF), ascorbic acid, phytic acid and salts thereof, and a mixture thereof.

[00230] The amount of the non-polymeric acid having two or more pKa values or salt(s) thereof in the composition according to the present invention may be 0.0001% by weight or more, depending on preferably 0.01% by weight or more, and more preferably 0.1% by weight or more, based on the total weight of the composition.

[00231] The amount of the non-polymeric acid having two or more pKa values or salt(s) thereof in the composition according to the present invention may be 30% by weight or less, preferably 20% by weight or less, and more preferably 15% by weight or less, relative to the total weight of the composition.

[00232] The amount of non-polymeric acid having two or more pKa values or salt(s) thereof in the composition according to the present invention can be from 0.0001 to 30% in weight, preferably from 0.01 to 20% by weight, and more preferably from 0.1 to 15% by weight, relative to the total weight of the composition. (Non-Polymeric Base with Two or More Base Dissociation Constants)

[00233] The composition according to the present invention may include at least one non-polymeric base with two or more pKb values or salt(s) thereof, that is, at least one non-polymeric base with two or more base dissociation constants or salt(s) thereof. The pKb value (base dissociation constant) is well known to those skilled in the art, and should be determined at a constant temperature, such as 25°C.

[00234] The non-polymeric base having two or more pKb values or salt(s) thereof(s) may be included in the particle (a). The non-polymeric base having two or more pKb values can function as a crosslinker for cationic polymer, anionic polymer and amphoteric polymers.

[00235] The term “non-polymeric” here means that the base is not obtained by polymerizing two or more monomers. Therefore, the non-polymeric base does not correspond to a base obtained by polymerization of two or more monomers, such as polyallylamine.

[00236] It is preferred that the molecular weight of the non-polymeric base having two or more pKb values or salt(s) thereof is 1000 or less, preferably 800 or less, and most preferably 700 or less.

[00237] There is no limit for the type of non-polymeric base that has two or more pKb values or salt(s) thereof. Two or more different types of non-polymeric bases with two or more pKb values or salts thereof can be used in combination. Thus, a single type of non-polymeric base having two or more pKb values or a salt thereof or a combination of different types of non-polymeric bases having two or more pKb values or salts thereof may be used.

[00238] The term "salt" in this specification means a salt formed by adding appropriate acid(s) to the non-polymeric base having two or more pKb values, which can be obtained from a reaction with the non-polymeric base having two or more pKb values with the acid(s) according to methods known to those skilled in the art. As the salt, mention may be made of ammonium salts, for example salts with inorganic acid such as HCl and HNO 3 , and salts with organic acids such as carboxylic acids and sulfonic acids.

[00239] The non-polymeric base with two or more pKb values or salt(s) thereof may be an organic base or salt(s) thereof, and preferably a hydrophilic or water-soluble organic base or salt(s) thereof.

[00240] The non-polymeric base having two or more pKb values may have at least two basic groups selected from the group consisting of an amino group, a guanidine group, a biguanide group, an imidazole group, an imino group, a pyridyl group and a mixture thereof.

[00241] The non-polymeric base having two or more pKb values can be selected from the group consisting of non-polymeric diamines such as ethylenediamine, propylenediamine, pentanediamine, hexanediamine, urea and derivatives thereof and guanidine and derivatives thereof, non-polymeric polyamines such as spermine and spermidine, basic amino acids and a mixture thereof.

[00242] The non-polymeric base having two or more pKb values or salt(s) thereof may be selected from the group consisting of arginine, lysine, histidine, cysteine, cystine, tyrosine, tryptophan , ornithine, and a mixture thereof.

[00243] It may be preferred that the non-polymeric base having two or more pKb values or salt(s) thereof is selected from the group consisting of arginine, lysine, histidine and a mixture thereof .

[00244] The amount of the non-polymeric base having two or more pKb values or salt(s) thereof in the composition according to the present invention may be 0.0001% by weight or more, of a preferably 0.01% by weight or more, and more preferably 0.1% by weight or more, based on the total weight of the composition.

[00245] The amount of the non-polymeric base having two or more pKb values or salt(s) thereof in the composition according to the present invention may be 30% by weight or less, preferably 20 % by weight or less, and more preferably 15% by weight or less, relative to the total weight of the composition.

[00246] The amount of the non-polymeric base having two or more pKb values or salt(s) thereof in the composition according to the present invention may be from 0.0001 to 30% by weight, from preferably from 0.01 to 20% by weight, and more preferably from 0.1 to 15% by weight, relative to the total weight of the composition. [Hydrophobic Amino Acid]

[00247] The particle (a) in the composition according to the present invention may include (d) at least one hydrophobic amino acid other than the above-mentioned non-polymeric acid having two or more pKa values or salt(s) of the same(s) or the above non-polymeric base with two or more pKb values or salt(s) thereof. Two or more hydrophobic amino acids can be used in combination.

[00248] The term "hydrophobic amino acid" may be selected from the group consisting of isoleucine, leucine, valine, methionine, phenylalanine, threonine, glycine, cysteine, alanine and mixtures thereof. It is preferred that the hydrophobic amino acid (d) is selected from leucine, phenylalanine and mixtures thereof.

[00249] The hydrophobic amino acid (d) can be useful for controlling the hydrophobicity of the particles (a) which can influence the encapsulation capacity of the particles (a), depending on the type of oil (b).

[00250] The amount of the hydrophobic amino acid(s) (d) in the composition according to the present invention may be 0.001% by weight or more, preferably 0.01% by weight or more , and more preferably 0.1% by weight or more, based on the total weight of the composition.

[00251] The amount of the hydrophobic amino acid(s) (d) in the composition according to the present invention may be 10% by weight or less, preferably 5% by weight or less, and more preferably 1 % by weight or less, based on the total weight of the composition.

[00252] The amount of hydrophobic amino acid(s) (d) in the composition according to the present invention can be from 0.001 to 10% by weight, preferably from 0.01 to 5% by weight weight, and more preferably from 0.1 to 1% by weight, relative to the total weight of the composition. [Oil gelling agent]

[00253] The composition according to the present invention may include (e) at least one oil gelling agent. Two or more oil gelling agents can be used in combination.

[00254] The (e) oil gelling agent (lipophilic thickener) can improve the stability of the composition according to the present invention even if the oil in the composition is less polar or non-polar.

[00255] The oil gelling agent (e) can be chosen from gelling agents derived from glutamic acid, gelling agents in polymeric form, and gelling agents in mineral form. The gelling agent includes agents that gel by chemical crosslinking and agents that gel by physical crosslinking.

[00256] N-acyl glutamic acid derivatives can be used as gelling agents derived from glutamic acid. Derivatives of N-acyl glutamic acid include N-acyl glutamic acid amides and N-acyl glutamic acid esters. In one embodiment, N-acyl glutamic acid amides in which the acyl group represents a C8 to C22 alkyl chain are preferred.

[00257] Examples of N-acyl glutamic acid derivatives that may be mentioned include N-lauroyl glutamic acid diethyl amide, N-lauroyl glutamic acid dibutyl amide, N-lauroyl glutamic acid dihexyl amide, dioctyl glutamic acid amide, N-lauroyl glutamic acid, N-lauroyl glutamic acid didecyl amide, N-lauroyl glutamic acid didodecyl amide, N-lauroyl glutamic acid ditetradecyl amide, N-lauroyl glutamic acid dihexadecyl amide, N-lauroyl glutamic acid distearyl amide, N-lauroyl-glutamic acid, N-ethylhexanoyl-L-glutamic acid dibutyl amide, N-stearoyl-glutamic acid dibutyl amide, N-stearoyl-glutamic acid dihexyl amide, N-stearoyl-glutamic acid diheptyl amide, dioctyl N-stearoyl glutamic acid amide, N-stearoyl glutamic acid didecyl amide, N-stearoyl glutamic acid didodecyl amide, N-stearoyl glutamic acid ditetradecyl amide, N-stearoyl glutamic acid dihexadecyl amide, distearyl N-stearoyl-glutamic acid amide and mixtures thereof, and more preferred is N-lauroyl-glutamic acid dibutyl amide, N-stearyl-glutamic acid dihexyl amide and mixtures thereof.

[00258] The gelling agent is preferably N-acyl glutamic acid dialkylamide, and more preferably N-lauroyl-L-glutamic acid dibutylamide (INCI: dibutyl lauroyl glutamide), manufactured or sold by Ajinomoto under the name GP -1 and N-ethylhexanoyl-L-dibutylamide glutamic acid (INCI: dibutyl ethylhexanoyl glutamide), manufactured or sold by Ajinomoto under the name EB-21.

[00259] Lipophilic polyamide polymers can be used as gelling agents in polymeric form. As lipophilic polyamide polymers, mention may be made of branched polyamides with pendant fatty chains and/or terminal fatty chains containing from 12 to 120 carbon atoms and in particular from 12 to 68 carbon atoms, the terminal fatty chains being attached to the structure main polyamide via ester groups. These polymers are most especially those described in US Pat. 5,783,657 to Union Camp Corporation. In particular, mention may be made of polymers of which the INCI name is “ethylenediamine/stearyl dimer dilinoleate copolymer” and “ethylenediamine/stearyl dimer tallate copolymer”.

[00260] As an example of gelling agents, commercial products sold by the company Bush Boake Allen under the names Uniclear 80, Uniclear 100, Uniclear 80 V, Uniclear 100 V and Uniclear 100 VG can be mentioned. They are sold, respectively, in the form of a gel at 80% (relative to the active material) in a mineral oil and 100% (relative to the active material).

[00261] Modified clays can be used as gelling agents, examples of which include hectorites modified with an ammonium chloride of a C10 to C22 fatty acid, such as bentonite modified with distearyldimethylammonium chloride, also known as quaternium-18 bentonite, such as the products sold or manufactured under the names Bentone 34 and Bentone 38 VCG by the Rheox Company, Claytone XL, Claytone 34 and Claytone 40 sold or manufactured by the Southern Clay Company, the modified clays known under the name Quaternium-18 Benzalkonium Bentonites and sold or manufactured under the names Claytone HT, Claytone GR and Claytone PS by the Southern Clay Company, clays modified with stearyldimethylbenzoylammonium chloride, known as stearalkonium bentonites, such as products sold or manufactured under the names Claytone APA and Claytone AF by the Southern Clay Company, and Baragel 24 sold or manufactured by the company Rheox.

[00262] The amount of the oil gelling agent(s) (e) in the composition according to the present invention may be 0.001% by weight or more, preferably 0.01% by weight or more, and more preferably 0.1% by weight or more, based on the total weight of the composition.

[00263] The amount of the oil gelling agent(s) (e) in the composition according to the present invention may be 10% by weight or less, preferably 5% by weight or less, and more preferably 1% by weight or less, relative to the total weight of the composition.

[00264] The amount of the oil gelling agent(s) (e) in the composition according to the present invention may be from 0.001 to 10% by weight, preferably from 0.01 to 5% by weight, and more preferably from 0.1 to 1% by weight, based on the total weight of the composition. [Cosmetic active ingredient]

[00265] The composition according to the present invention may comprise at least one cosmetic active ingredient (additional) in addition to the oil (b). There is no limitation for the additional cosmetic active ingredient as long as it is not the oil (b). Two or more additional cosmetic active ingredients can be used in combination. Thus, a single type of additional cosmetic active ingredient or a combination of different types of additional cosmetic active ingredients can be used.

[00266] Among the additional cosmetic active ingredients to be used, hydrophobic or water-insoluble UV filters, antioxidants, cleaning agents, free radical scavengers, moisturizers, whitening agents, liporegulators, anti-acne agents, anti -dandruff, anti-aging agents, softeners, anti-wrinkle agents, keratolytic agents, fresheners, antibacterial agents, antifungal agents, antiperspirants, deodorants, skin conditioners, anesthetics, nourishing agents and sebum absorbers or moisture absorbers.

[00267] The composition according to the present invention may comprise the additional cosmetic active ingredients in an amount of 0.01 to 50% by weight, preferably 0.1 to 40% by weight, more preferably 1 to 30% by weight weight, and even more preferably 2 to 20% by weight, relative to the total weight of the composition. (Hydrophobic or water insoluble UV filter)

[00268] According to a preferred embodiment of the present invention, the additional cosmetic active ingredient can be selected from hydrophobic or water-insoluble UV filters.

[00269] There is no limit for the type of UV filter hydrophobic or water insoluble. Two or more types of hydrophobic or water-insoluble UV filters can be used in combination. Thus, a single type of hydrophobic or water-insoluble UV filter can be used, or a combination of different types of hydrophobic or water-insoluble UV filters can be used. The hydrophobic or water-insoluble UV filter may be selected from the group consisting of an inorganic UV filter, a hydrophobic or water-insoluble organic UV filter, and a mixture thereof. (Inorganic UV filter)

[00270] The composition according to the present invention may comprise at least one inorganic UV filter. If two or more inorganic UV filters are used, they can be the same or different, preferably the same.

[00271] The inorganic UV filter used for the present invention can be active in the UV-A and/or UV-B region. The inorganic UV filter used for the present invention is water insoluble in solvents such as water and ethanol commonly used in cosmetics, but can be hydrophilic and/or lipophilic.

[00272] It is preferable that the inorganic UV filter is in the form of a fine particle such that the mean (primary) particle diameter thereof ranges from 1 nm to 50 nm, preferably from 5 nm to 40 nm, and more preferably from 10 nm to 30 nm. The average (primary) particle size or the average (primary) particle diameter here is an arithmetic average diameter.

[00273] The inorganic UV filter can be selected from the group consisting of silicon carbide, metal oxides that may or may not be coated and mixtures thereof.

[00274] Preferably, inorganic UV filters can be selected from pigments (average primary particle size: generally from 5 nm to 50 nm, preferably from 10 nm to 50 nm) formed from metal oxides, such as, for example, pigments formed from titanium oxide (amorphous or crystalline in the form of rutile and/or anatase), iron oxide, zinc oxide, zirconium oxide or cerium oxide, which are all UV photoprotective agents that are well known per se. Preferably, the inorganic UV filters can be selected from titanium oxide, zinc oxide, and most preferably, titanium oxide.

[00275] The inorganic UV filter may or may not be coated. The inorganic UV filter can have at least one coating. The coating may comprise at least one compound selected from the group consisting of alumina, silica, aluminum hydroxide, silicones, silanes, fatty acids or salts thereof (such as sodium, potassium, zinc, iron, or salts thereof). aluminium), fatty alcohols, lecithin, amino acids, polysaccharides, proteins, alkanolamines, waxes such as beeswax, (meth)acrylic polymers, organic UV filters and (per)fluoro compounds.

[00276] It is preferable that the coating includes at least one organic UV filter. As an organic UV filter in the coating, a dibenzoylmethane derivative such as butyl methoxydibenzoylmethane (Avobenzone) and 2,2'-Methylenebis[6-(2H-Benzotriazol-2-yl)-4-(1,1,3,3-Tetramethyl -Butyl)Phenol] (Methylene Bis-Benzotriazolyl Tetramethylbutylphenol) marketed as “TINOSORB M” by BASF may be preferable.

[00277] In a known manner, the silicones in which the coating(s) may be organosilicon polymers or oligomers comprising a linear or cyclic and branched or crosslinked structure, of variable molecular weight, obtained by polymerization and/or polycondensation of suitable functional silanes and essentially composed of repeating head units in which the silicon atoms are connected to each other by oxygen atoms (siloxane linkage), the optionally substituted hydrocarbon radicals being connected directly to said silicon atoms by a carbon atom.

[00278] The term "silicones" also covers silanes necessary for their preparation, in particular alkylsilanes.

[00279] The silicones used for the coating(s) may preferably be selected from the group consisting of alkylsilanes, polydialkylsiloxanes, and polyalkylhydrosiloxanes. Most preferably, the silicones are selected from the group consisting of octyltrimethylsilanes, polydimethylsiloxanes, and polymethylhydrosiloxanes.

[00280] Clearly, inorganic UV filters made of metal oxides may, prior to their treatment with silicones, have been treated with other coating agents, in particular, with cerium oxide, alumina, silica, aluminum compounds, silicon compounds, or mixtures thereof.

[00281] The coated inorganic UV filter may have been prepared by subjecting the inorganic UV filter to one or more surface treatments of a chemical, electronic, mechanochemical, and/or mechanical nature with any of the compounds as described above, as well as polyethylenes , metal alkoxides (titanium or aluminum alkoxides), metal oxides, sodium hexametaphosphate and those shown, for example, in Cosmetics & Toiletries, February 1990, vol. 105, pp. 53-64.

[00282] Coated inorganic UV filters can be titanium oxides coated with: - silica, such as Ikeda's “Sunveil” product; - silica and iron oxide, such as Ikeda's “Sunveil F” product; - silica and alumina, such as the products “Microtitanium Dioxide MT 500 SA” from Tayca, “Tioveil” from Tioxide, and “Mirasun TiW 60” from Rhodia; - alumina, such as the products “Tipaque TTO-55 (B)” and “Tipaque TTO-55 (A)” from Ishihara, and “UVT 14/4” from Kemira; - alumina and aluminum stearate, such as the product “Microtitanium Dioxide MT 100 T, MT 100 TX, MT 100 Z or MT-01” by Tayca, the products “Solaveil CT-10 W” and “Solaveil CT 100” by Uniqema, and Merck's “Eusolex T-AVO” product; - alumina and aluminum laurate, such as the product “Microtitanium Dioxide MT 100 S” by Tayca; - iron oxide and iron stearate, such as the product “Microtitanium Dioxide MT 100 F” by Tayca; - zinc oxide and zinc stearate, such as Tayca's “BR351” product; - silica and alumina and treated with a silicone, such as the products “Microtitanium Dioxide MT 600 SAS”, “Microtitanium Dioxide MT 500 SAS”, and “Microtitanium Dioxide MT 100 SAS” by Tayca; - silica, alumina, and aluminum stearate and treated with a silicone, such as Titan Kogyo's “STT-30-DS” product; - silica and silicone-treated, such as Kemira's “UV-Titan X 195” product; - alumina and silicone treated, such as the products “Tipaque TTO-55 (S)” by Ishihara or “UV Titan M 262” by Kemira; - triethanolamine, such as the product “STT-65-S” by Titan Kogyo; - stearic acid, such as the product “Tipaque TTO-55 (C)” from Ishihara; or - sodium hexametaphosphate, such as the product “Microtitanium Dioxide MT 150 W” by Tayca.

[00283] Other titanium oxide pigments treated with a silicone are preferably TiO2 treated with octyltrimethylsilane and for which the average individual particle size is between 25 and 40 nm, such as that marketed under the trademark “T 805” by Degussa silicas, TiO2 treated with a polydimethylsiloxane and whose average individual particle size is 21 nm, as sold under the brand name “70250 Cardre UF TiO2Si3” by Cardre, and anatase/rutile TiO2 treated with a polydimethylhydrosiloxane and for which the size average of individual particles is 25 nm, as marketed under the trademark “Microtitanium Dioxide USP Grade Hydrophobic” by Color Techniques.

[00284] Preferably, the following coated TiO2 can be used as the coated inorganic UV filter: - Stearic acid (and) Aluminum hydroxide (and) TiO2, such as Tayca's “TA-100 TV” product, with an average primary particle diameter of 15 nm; - Dimethicone (and) Stearic Acid (and) Aluminum Hydroxide (and) TiO2, such as Miyoshi Kasei's “SA-TTO-S4” product, with an average primary particle diameter of 15 nm; - Silica (and) TiO2, such as Tayca's “MT-100 WP” product, with an average primary particle diameter of 15 nm; - Dimethicone (and) Silica (and) Aluminum Hydroxide (and) TiO2, such as Tayca's “TA Y02” and “TA-Y-110 M3S” product, with an average primary particle diameter of 10 nm; Dimethicone (and) Aluminum Hydroxide (and) TiO2, such as Miyoshi Kasei's “SATTO-S3” product, with an average primary particle diameter of 15 nm; Dimethicone (and) Alumina (and) TiO2, such as Sachtleben's “UV TITAN M170” product, with an average primary particle diameter of 15 nm; and - Silica (e) Aluminum Hydroxide (e) Alginic Acid (e) TiO2, such as Tayca's “MT-100 AQ” product, with an average primary particle diameter of 15 nm.

[00285] In terms of UV filtering ability, TiO2 coated with at least one organic UV filter is more preferable. For example, Avobenzone (and) Stearic Acid (and) Aluminum Hydroxide (and) TiO2, such as Tayca's "HXMT-100ZA" product, with an average primary particle diameter of 15 nm, can be used.

[00286] Uncoated titanium oxide pigments are, for example, marketed by Tayca under the trademarks “Microtitanium Dioxide MT500B” or “Microtitanium Dioxide MT600B”, by Degussa under the trademark “P 25”, by Wacker under the registered trademark “Oxyde de titane transparent PW”, by Miyoshi Kasei under the trademark “UFTR”, by Tomen under the trademark “ITS”, and by Tioxide under the trademark “Tioveil AQ”.

[00287] Uncoated zinc oxide pigments are, for example: - those marketed under the trademark “Z-cote” by Sunsmart; - those marketed under the trademark “Nanox” by Elementis; and - those marketed under the trademark “Nanogard WCD 2025” by Nanophase Technologies.

[00288] Coated zinc oxide pigments are, for example: - those marketed under the trademark “Oxide Zinc CS-5” by Toshiba (ZnO coated with polymethylhydrosiloxane); - those marketed under the trademark “Nanogard Zinc Oxide FN” by Nanophase Technologies (as a 40% dispersion in Finsolv TN, C12-C15 alkyl benzoate); - those marketed under the trademark “Daitopersion Zn-30” and “Daitopersion Zn-50” by Daito (dispersions in polydimethylsiloxane/oxyethylenated cyclopolymethylsiloxane/cyclopolymethylsiloxane comprising 30% or 50% of zinc nano-oxides coated with silica and polymethylhydrosiloxane); - those marketed under the trademark “NFD Ultrafine ZnO” by Daikin (ZnO coated with perfluoroalkyl phosphate and a perfluoroalkylethyl-based copolymer as a dispersion in cyclopentasiloxane); - those marketed under the trademark “SPD-Z1” by Shin-Etsu (ZnO coated with an acrylic polymer grafted with silicone dispersed in cyclodimethylsiloxane); - those marketed under the trademark “Escalol Z100” by the ISP (ZnO treated with alumina dispersed in a mixture of ethylhexyl methoxycinnamate/PVP-hexadecene copolymer/methicone); - those marketed under the trademark “Fuji ZnO-SMS-10” by Fuji Pigment (ZnO coated with silica and polymethylsilsesquioxane); and those marketed under the trademark “Nanox Gel TN” by Elementis (55% dispersed ZnO in C12-C15 alkyl benzoate with polycondensed hydroxystearic acid).

[00289] Uncoated cerium oxide pigments are marketed, for example, under the trademark “Colloidal Cerium Oxide” by Rhone-Poulenc.

[00290] Uncoated iron oxide pigments are, for example, marketed by Arnaud under the trademarks “Nanogard WCD 2002 (FE 45B)”, “Nanogard Iron FE 45 BL AQ”, “Nanogard FE 45R AQ”, and “Nanogard WCD 2006 (FE 45R)” or by Mitsubishi under the trademark “TY-220”.

[00291] Coated iron oxide pigments are, for example, marketed by Arnaud under the trademarks “Nanogard WCD 2008 (FE 45B FN)”, “Nanogard WCD 2009 (FE 45B 556)”, “Nanogard FE 45 BL 345 ”, and “Nanogard FE 45 BL”, or by BASF under the brand name “Oxyde de fer transparent”.

[00292] Mention may also be made of mixtures of metal oxides, in particular titanium dioxide and cerium dioxide, including a mixture of equal weights of silica-coated titanium dioxide and silica-coated cerium dioxide marketed by Ikeda under the trademark “Sunveil A”, and also a mixture of titanium dioxide and zinc dioxide coated with alumina, with silica and with silicone, such as the product “M 261” marketed by Kemira, or coated with alumina, with silica, and with glycerol, such as the product “M 211” marketed by Kemira.

[00293] Coated inorganic UV filters are preferable, because the UV filtering effects of inorganic UV filters can be improved. Furthermore, the coating(s) can help to evenly or homogeneously disperse the UV filters in the composition according to the present invention.

[00294] If inorganic UV filters in the form of fine particles are used, a film according to the present invention that can be prepared from the composition according to the present invention can also have the effect of not providing a white appearance, but a transparent or clear appearance, because the fine particles of inorganic UV filters do not clump together, but can spread evenly or homogeneously on the film. It should be noted that fine particles free of inorganic UV filter(s) easily aggregate to give a white appearance to the skin. (Hydrophobic or Water Insoluble Organic UV Filter)

[00295] The composition according to the present invention may comprise at least one hydrophobic or water-insoluble organic UV filter. If two or more hydrophobic or water-insoluble organic UV filters are used, they may be the same or different, preferably the same.

[00296] The hydrophobic or water-insoluble organic UV filter used for the present invention can be active in the UV-A and/or UV-B region. The hydrophobic or water-insoluble organic UV filter may be lipophilic.

[00297] The hydrophobic or water-insoluble organic UV filter can be solid or liquid. The terms "solid" and "liquid" mean solid and liquid, respectively, at 25 °C below 1 atm.

[00298] The hydrophobic or water-insoluble organic UV filter can be selected from the group consisting of anthranilic compounds; dibenzoylmethane compounds; cinnamic compounds; salicylic compounds; camphor compounds; benzophenone compounds; β,β-diphenylacrylate compounds; triazine compounds; benzotriazole compounds; benzalmalonate compounds; benzimidazole compounds; imidazoline compounds; bis-benzoazolyl compounds; p-aminobenzoic acid (PABA) compounds; methylenebis(hydroxyphenylbenzotriazole) compounds; benzoxazole compounds; screening polymers and screening silicones; dimers derived from α-alkylstyrene; 4,4-diarylbutadiene compounds; guaiazulene and derivatives thereof; rutin and derivatives thereof; and mixtures thereof.

[00299] Mention may be made, as examples of the organic UV filter(s) hydrophobic(s) or insoluble(s) in water, of those indicated below under their INCI names, and mixtures thereof: - Compound anthranilics: menthyl anthranilate, marketed under the trademark “Neo Heliopan MA” by Haarmann and Reimer; - Dibenzoylmethane compounds: butyl methoxydibenzoylmethane, marketed privately under the trademark “Parsol 1789” by Hoffmann-La Roche; and isopropyl dibenzoylmethane; - Cinnamic compounds: ethylhexyl methoxycinnamate, marketed privately under the trademark “Parsol MCX” by Hoffmann-La Roche; isopropyl methoxycinnamate; isopropoxy methoxycinnamate; isoamyl methoxycinnamate, marketed under the trademark “Neo Heliopan E 1000” by Haarmann and Reimer; cinoxate (2-ethoxyethyl-4-methoxy cinnamate); DEA methoxycinnamate; diisopropyl methylcinnamate; and glyceryl ethylhexanate dimethoxycinnamate; - Salicylic compounds: Homosalate (homomentyl salicylate), marketed under the trademark “Eusolex HMS” by Rona/EM Industries; ethylhexyl salicylate, marketed under the trademark “Neo Heliopan OS” by Haarmann and Reimer; glycol salicylate; butyl octyl salicylate; phenyl salicylate; dipropylene glycol salicylate, marketed under the trademark “Dipsal” by Scher; and TEA salicylate, marketed under the trade name “Neo Heliopan TS” by Haarmann and Reimer; - Camphor compounds, in particular, benzylidene camphor derivatives: 3-benzylidene camphor, manufactured under the trademark “Mexoryl SD” by Chimex; 4-methylbenzylidene camphor, marketed under the trade name “Eusolex 6300” by Merck; benzylidene camphor sulfonic acid, manufactured under the trademark “Mexoryl SL” by Chimex; benzalkonium camphor methosulfate, manufactured under the trade name “Mexoryl SO” by Chimex; and polyacrylamidomethyl benzylidene camphor, manufactured under the trademark “Mexoryl SW” by Chimex; - Benzophenone compounds: Benzophenone-1 (2,4-dihydroxybenzophenone), marketed under the trademark “Uvinul 400” by BASF; benzophenone-2 (Tetrahydroxybenzophenone), marketed under the trademark “Uvinul D50” by BASF; Benzophenone-3 (2-hydroxy-4-methoxybenzophenone) or oxybenzone, marketed under the trademark “Uvinul M40” by BASF; benzophenone-4 (hydroxymethoxy benzophonene sulfonic acid), marketed under the trademark “Uvinul MS40” by BASF; Benzophenone-5 (Sodium Benzophenone Hydroxymethoxy Sulfonate); benzophenone-6 (dihydroxy dimethoxy benzophenone); marketed under the trademark “Helisorb 11” by Norquay; benzophenone-8, marketed under the trade name “Spectra-Sorb UV-24” by American Cyanamid; benzophenone-9 (disodium dihydroxy dimethoxy benzophenone disulfonate), marketed under the trademark “Uvinul DS-49” by BASF; benzophenone-12 and n-hexyl 2-(4-diethylamino-2-hydroxybenzoyl)benzoate (UVINUL A+ by BASF); - β, β-Diphenylacrylate compounds: Octocrylene, marketed in particular under the trademark “Uvinul N539” by BASF; and Ethocrylene, marketed privately under the trademark “Uvinul N35” by BASF; - Triazine compounds: Diethylhexyl butamido triazone, marketed under the trademark “Uvasorb HEB” by Sigma 3V; 2,4,6-tris(dinepentyl 4'-aminobenzalmalonate)-s-triazine, bis-ethylhexyloxyphenol methoxyphenyl triazine sold under the trade name “Tinosorb S” by Ciba Geigy, and ethylhexyl triazone sold under the trade name “UVINUL T150” by BASF; - Benzotriazole compounds, in particular phenylbenzotriazole derivatives: 2-(2H-benzotriazol-2-yl)-6-dodecyl-4-methylphene, branched and linear; and those described in USP 5,240,975; - Benzalmalonate compounds: dineopentyl 4'-methoxybenzalmalonate and polyorganosiloxane comprising benzalmalonate functional groups, such as polysilicone-15, marketed under the trademark “Parsol SLX” by Hoffmann-LaRoche; - benzimidazole compounds, in particular phenylbenzimidazole derivatives; - Imidazoline compounds: ethylhexyl propionate dimethoxybenzylidene dioxoimidazoline; - Bis-benzoazolyl compounds: Derivatives as described in EP-669,323 and US Pat. No. 2,463,264; - Para-aminobenzoic acid compounds: PABA (p-aminobenzoic acid), and ethyl PABA, ethyl dihydroxypropyl PABA, pentyl dimethyl PABA, ethylhexyl dimethyl PABA, sold in particular under the trademark “Escalol 507” by ISP, glyceryl PABA and PEG-25 PABA, marketed under the trademark “Uvinul P25” by BASF; - Methylene bis(hydroxyphenylbenzotriazole) compounds, such as 2,2'-methylenebis[6-(2H-benzotriazol-2-yl)-4-methyl-phenol] marketed in solid form under the trademark “Mixxim BB/ 200” by Fairmount Chemical, 2,2'-methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol] marketed in micronized form in aqueous dispersion under the trademark “Tinosorb M” by BASF, or under the trademark “Mixxim BB/100” by Fairmount Chemical, and the derivatives described in Pat. 5,237,071, 5,166,355, GB-2,303,549, DE-197,26,184 and EP-893,119, and - Drometrizol trisiloxane, marketed under the trademark “Silatrizole” by Rhodia Chimie or “Mexoryl XL” by L'Oreal, as depicted below; - Benzoxazole compounds: 2,4-bis[5-1(dimethylpropyl)benzoxazol-2-yl-(4-phenyl)imino]-6-(2-ethylhexyl)imino-1,3,5-triazine, marketed under Sigma 3V's trademark Uvasorb K2A; - Screening polymers and screening silicones: The silicones described in WO 93/04665; - Dimers derived from α-alkylstyrene: the dimers described in DE-19855649; - 4,4-Diarylbutadiene compounds: 1,1-dicarboxy(2,2'-dimethylpropyl)-4,4-diphenylbutadiene.

[00300] It is preferred that hydrophobic or water-insoluble organic UV filters are selected from the group consisting of: - butyl methoxydibenzoylmethane, ethylhexyl methoxycinnamate, homosalate, ethylhexyl salicylate, octocrylene, benzophenone-3, benzophenone-4, benzophenone n-hexyl -5,2-(4-diethylamino-2-hydroxybenzoyl)benzoate, 1,1'-(1,4-piperazinodiyl)bis[1-[2-[4-(diethylamino)-2-hydroxybenzoyl] phenyl]-methanone 4-methylbenzylidene camphor, ethylhexyl triazone, bis-ethylhexyloxyphenol methoxyphenyl triazine, diethylhexyl butamido triazone, 2,4,6-tris(dinepentyl 4'-aminobenzalmalonate)-s-triazine, 2,4,6-tris(diisobutyl 4'-aminobenzalmalonate)-s-triazine, 2,4-bis-(n-butyl 4'-aminobenzalmalonate)-6-[(3-{1,3,3,3-tetramethyl-1-[(trimethylsilyloxy]- disiloxanyl}propyl)amino]-s-triazine, 2,4,6-tris-(diphenyl)-triazine, 2,4,6-tris-(tert-phenyl)-triazine, methylene bis-benzotriazolyl tetramethylbutylphenol, drometrizole trisiloxane, polysilicone-15, dinepentyl 4'-methoxybenzalmalonate, 1,1-dicarboxy(2,2'-dimethylpropyl)-4,4-diphenylbutadiene, 2,4-bis[5-1(dimethylpropyl)benzoxazol-2-yl- (4-phenyl)imino]-6-(2-ethylhexyl)imino-1,3,5-triazine, benzylkonium camphor methosulfate and mixtures thereof. (Bleaching Agent)

[00301] According to a preferred embodiment of the present invention, the cosmetic active ingredient can be selected from whitening agents.

[00302] There is no limit for the type of bleaching agent. Two or more types of bleaching agents can be used in combination. Thus, a single type of bleaching agent or a combination of different types of bleaching agents can be used.

[00303] As examples of the whitening agent, there may be mentioned ascorbic acid or derivatives thereof, kojic acid or derivatives thereof, tranexamic acid or derivatives thereof, resorcinol or derivatives thereof, alkoxysalicylic acid or salts thereof, adenosine phosphate or salts thereof, hydroquinone or glycosides thereof or derivatives thereof, glutathione, 4-(4-hydroxyphenyl)-2-butanol, magnolignan (5,5'-dipropyl-biphenyl-2,2'-diol), chamomilla recutita and the like.

[00304] Ascorbic acid has a D configuration or L configuration, and the L configuration is preferably employed. Ascorbic acid is also known as vitamin C and has melanin production inhibition effects due to the strong reducing effects of ascorbic acid. The ascorbic acid derivatives may be ascorbic acid salts and the ascorbic acid salts are preferably selected from sodium ascorbate, magnesium ascorbyl phosphate and sodium ascorbyl phosphate. Derivatives of ascorbic acids can be ascorbic acid glycosides or ascorbic acid esters. As an example of ascorbic acid glycosides, mention may be made, for example, of ascorbyl glucoside. As examples of ascorbic acid esters, mention may be made, for example, of silyl ascorbate, tocopheryl ascorbate and alkyl ascorbate. As the alkyl ascorbate, methyl ascorbate or ethyl ascorbate is preferably used. In particular, ascorbyl glycoside is preferable. Ascorbic acid or derivatives thereof can be used alone or in combination with two or more types.

[00305] As detailed examples of ascorbic acid derivatives, mention may be made, for example, of 5,6-di-O-dimethylsilyl ascorbate, which is commercially available as PRO-AA by Exsymol SAM; dl-alpha-tocopheryl-2-l-ascorbyl phosphate which is commercially available as SEPIVITAL EPC from Senju Pharmaceutical Co., Ltd.; sodium ascorbyl phosphate which is commercially available as Stay-C 50 from Roche; ascorbyl glycoside which is commercially available from Hayashibara Biochemical Labs., Inc.; 3-O-ethyl ascorbic acid; It's similar.

[00306] Ascorbic acid or the derivative thereof is preferably used in combination with a copolymer of styrene and maleic anhydride. In particular, at least a part of the maleic anhydride unit of the above-mentioned copolymer is preferably hydrolyzed. The aforementioned hydrolyzed maleic anhydride unit may be in the form of an alkaline salt, such as a sodium salt, a potassium salt, a lithium salt or the like. The above-mentioned maleic anhydride unit preferably occupies 0.4 to 0.9 mol per one mol of the whole copolymer, and a ratio of the maleic anhydride unit and the styrene unit is preferably 50:50. In particular, it is preferable that the ratio of the maleic anhydride unit to the styrene unit is preferably 50:50, and the ammonium salt or sodium salt is used. By employing ascorbic acid or derivative thereof in combination with the above-mentioned copolymer, the stability of ascorbic acid or derivative thereof is improved. As the aforementioned copolymer, for example, a copolymer of styrene and maleic anhydride (50/50) in the form of an ammonium salt at a concentration of 30% in water, commercially available as product number SMA 1000 H (trademark) of Atofina Chemicals Inc; or a copolymer of styrene and maleic anhydride (50/50) in the form of the sodium salt at a concentration of 40% in water, commercially available as product number SMA 1000 H Na (registered trademark) from Atofina Chemicals Inc., can be used. The above-mentioned copolymer is used in a concentration ranging from 0.1 to 20% by weight, and preferably ranging from 0.1 to 10% by weight, based on the total weight of the bleaching agent for topical application.

[00307] As an example of kojic acid derivatives, mention may be made of, for example, kojic acid glycoside.

[00308] As examples of tranexamic acid derivatives, tranexamic acid dimers (such as trans-4-(trans-aminomethylcyclohexanecarbonyl) aminomethylcyclohexane carboxylic acid hydrochloric acid), tranexamic acid esters and hydroquinone (such as 4' -hydroxyphenyl trans-4-aminomethylcyclohexane carboxylate), esters of tranexamic acid and gentisic acid (as 2-(trans-4-aminomethylcyclohexanecarbonyloxy)-5-hydroxybenzoic acid and salts thereof), tranexamic amides (as trans-4-hydroxyphenyl aminomethylcyclohexanecarboxylic methylamide) and salts thereof, trans-4-(p-methoxybenzoyl)aminomethylcyclohexanecarboxylic acid and salts thereof, and trans-4-guanidinomethylcyclohexanecarboxylic acid and salts thereof) and the like.

[00309] As examples of resorcinol derivatives, mention may be made of, for example, 4-n-butylresorcinol (Rucinol) and the like.

[00310] An alkoxysalicylic acid is a compound in which any of the hydrogen atoms at the 3 position, at the 4 position, or the 5 position of the salicylic acid is replaced by an alkoxy group. The above-mentioned alkoxy group is preferably any one of a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group and an isobutoxy group, and is more preferably a methoxy group or an ethoxy group. As examples of the compound, mention may be made, for example, of 3-methoxysalicylic acid, 3-ethoxysalicylic acid, 4-methoxysalicylic acid, 4-ethoxysalicylic acid, 4-propoxysalicylic acid, 4-isopropoxysalicylic acid, 4-butoxysalicylic acid, 5-methoxysalicylic acid, 5-ethoxysalicylic acid, 5-propoxysalicylic acid and the like. Salts of alkoxysalicylic acids are not particularly limited. As examples thereof, mention may be made, for example, of alkali metal salts or alkaline earth metal salts, such as sodium salts, potassium salts, calcium salts and the like, ammonium salts, amino acid salts and the like . A potassium salt of 4-methoxysalicylic acid is preferred.

[00311] As examples of adenosine phosphate or salts thereof, mention may be made, for example, of adenosine phosphate disodium and the like.

[00312] As examples of hydroquinone glycosides, mention may be made, for example, of hexose glycosides such as hydroquinone alpha-D-glucose, hydroquinone beta-D-glucose, hydroquinone alpha-L-glucose, hydroquinone beta-L-glucose hydroquinone alpha-D-galactose, hydroquinone beta-D-galactose, hydroquinone alpha-L-galactose, hydroquinone beta-L-galactose and the like; pentose glycosides, such as hydroquinone alpha-D-ribose, hydroquinone beta-D-ribose, hydroquinone alpha-L-ribose, hydroquinone beta-L-ribose, hydroquinone alpha-D-arabinose, hydroquinone beta-D-arabinose, hydroquinone beta-L -arabinose, hydroquinone beta-L-arabinose and the like; amino sugar glycosides such as hydroquinone alpha-D-glucosamine, hydroquinone beta-D-glucosamine, hydroquinone alpha-L-glucosamine, hydroquinone beta-L-glucosamine, hydroquinone alpha-D-galactosamine, hydroquinone beta-D-galactosamine, hydroquinone alpha -L-galactosamine, hydroquinone beta-L-galactosamine and the like; urocanic acid glycosides such as alpha-D-glucuronic acid hydroquinone, beta-D-glucuronic acid hydroquinone, alpha-L-glucuronic acid hydroquinone, beta-L-glucuronic acid hydroquinone, beta-L-glucuronic acid hydroquinone , alpha-D-galacturonic acid hydroquinone, beta-D-galacturonic acid hydroquinone, alpha-L-galacturonic acid hydroquinone, beta-L-galacturonic acid hydroquinone and the like. Among these compounds, beta-D-glucose hydroquinone (hereinafter referred to as “arbutin”) is preferable. As examples of derivatives of hydroquinone or its glycosides, mention may be made, for example, of salts of hydroquinone or its glycosides. In particular, as examples of arbutin derivatives, mention may be made of, for example, 6-O-caffeoylarbutin and the like.

[00313] As whitening active ingredients, in particular, L-ascorbic acid or derivatives thereof, kojic acid or derivatives thereof, tranexamic acid or derivatives thereof, arbutin or derivatives thereof and Rucinol are preferable and ascorbic acid derivatives , such as 3-O-ethyl L-ascorbic acid and L-ascorbic acid glycoside are more preferable. [pH]

[00314] The pH of the composition according to the present invention can be from 3 to 9, preferably from 3.5 to 8.5 and more preferably from 4 to 8.

[00315] At a pH of 3 to 9, the particle (a) can be very stable.

[00316] 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 the acid (d) to be incorporated into the particle (a). The pH of the composition according to the present invention can also be adjusted by adding at least one buffering agent. (Alkaline agent)

[00317] The composition according to the present invention may comprise at least one alkaline agent. Two or more alkaline agents can be used in combination. Thus, a single type of alkaline agent or a combination of different types of alkaline agents can be used.

[00318] The alkaline agent may be an inorganic alkaline agent. It is preferred 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.

[00319] As examples of the inorganic alkali metal hydroxides, mention may be made of sodium hydroxide and potassium hydroxide. As examples of the alkaline earth metal hydroxides, mention may be made of calcium hydroxide and magnesium hydroxide. As an inorganic alkaline agent, sodium hydroxide is preferable.

[00320] The alkaline agent may be an organic alkaline agent. It is preferred that the organic alkaline agent is selected from the group consisting of monoamines and derivatives thereof; diamines and derivatives thereof; polyamines and derivatives thereof; basic amino acids and derivatives thereof; oligomers of basic amino acids and derivatives thereof; polymers of basic amino acids and derivatives thereof; urea and derivatives thereof; and guanidine and derivatives thereof.

[00321] As examples of organic alkaline agents, alkanolamines, such as mono-, di-, and tri-ethanolamine, and isopropanolamine; urea, guanidine and derivatives thereof; basic amino acids such as lysine, ornithine or arginine; and diamines as described in the structure below: wherein R denotes an alkylene group such as propylene optionally substituted by a hydroxyl group or a C1-C4 alkyl radical, and R1, R2, R3 and R4 independently represent a hydrogen atom, an alkyl radical or a C1-C1-hydroxyalkyl radical C4, which can be exemplified by 1,3-propanediamine and derivatives thereof. Arginine, urea and monoethanolamine are preferred.

[00322] The alkaline agent(s) may be used in a total amount of 0.1 to 20% by weight, preferably 0.2 to 10% by weight, more preferably from 0.3 to 5% by weight, relative to the total weight of the composition, depending on its solubility. (Acid)

[00323] The composition according to the present invention may comprise at least one acid other than the acid (d) to be incorporated in the particle (a). Two or more acids can be used in combination. Thus, a single type of acid or a combination of different types of acids can be used.

[00324] As acid, reference may be made to any inorganic or organic acids, preferably inorganic acids, which are commonly used in cosmetic products. A monovalent acid and/or a polyvalent acid can be used. A monovalent acid such as citric acid, lactic acid, sulfuric acid, phosphoric acid and hydrochloric acid (HCl) can be used. HCl is preferable.

[00325] The acid(s) may be used in a total amount of 0.1 to 15% by weight, preferably 0.2 to 10% by weight, more preferably 0. 3 to 5% by weight, relative to the total weight of the composition, depending on its solubility. (Buffering Agent)

[00326] The composition according to the present invention may comprise at least one buffering agent. Two or more buffering agents can be used in combination. Thus, a single type of buffering agent or a combination of different types of buffering agents can be used.

[00327] As the buffering agent, mention may be made of an acetate buffer (for example, acetic acid + sodium acetate), phosphate buffer (for example, sodium dihydrogen phosphate + disodium hydrogen phosphate), a citrate buffer (e.g. citric acid + sodium citrate), a borate buffer (e.g. boric acid + sodium borate), a tartrate buffer (e.g. tartaric acid + sodium tartrate dihydrate), Tris buffer (eg, tris(hydroxymethyl)aminomethane), Hepes buffer (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid). [Optional additives]

[00328] The composition according to the present invention may comprise, in addition to the aforementioned components, components normally used in cosmetics, specifically, surfactants or emulsifiers, hydrophilic thickeners, non-volatile organic solvents, silicones and silicone derivatives with the exception of oil (b), natural extracts derived from animals or vegetables, waxes and the like, within a range that does not impair the effects of the present invention.

[00329] The composition according to the invention may also comprise at least one fatty acid. The fatty acid can be useful for controlling the hydrophobicity of the particles (a) which can influence the encapsulation capacity of the particles (a), depending on the type of oil (b).

[00330] The composition according to the present invention may comprise the aforementioned optional additives in an amount of 0.01 to 50% by weight, preferably 0.05 to 30% by weight, and more preferably 0.1 to 50% by weight. 10% by weight, based on the total weight of the composition.

[00331] However, it is preferable that the composition according to the present invention includes a very limited amount of surfactant(s) or emulsifier(s). The amount of surfactant(s) or emulsifier(s) in the composition according to the present invention may be 0.1% by weight or less, preferably 0.01% by weight or less, and most preferably 0.001% by weight or less. less, in relation to the total weight of the composition. It is particularly preferred that the composition according to the present invention does not include surfactant or emulsifier. [Composition]

[00332] Since the composition according to the present invention comprises at least one oil (b), the composition according to the present invention can comprise at least one fatty phase.

[00333] On the other hand, since the composition according to the present invention comprises water (c), the composition according to the present invention may comprise at least one aqueous phase.

[00334] The aqueous phase may comprise at least one C2-C6 monohydric alcohol. Two or more C2-C6, monohydric alcohols may be used in combination.

[00335] The C2-C6 monohydric alcohol suitable for the present invention may comprise from 2 to 5 carbon atoms, preferably from 2 to 4 carbon atoms, such as ethanol, isopropanol, propanol or butanol.

[00336] Ethanol and isopropanol, and preferably ethanol, are very particularly suitable for the present invention.

[00337] The amount of C2-C6 monohydric alcohol in the composition according to the present invention may be 20% by weight or less, preferably 15% by weight or less, and more preferably 10% by weight or less, by relative to the total weight of the composition. On the other hand, the amount of monohydric C2-C6 alcohol in the composition according to the present invention is 5% by weight or more, preferably 6% by weight or more, and more preferably 7% by weight or more, in relation to the total weight of the composition. For example, the amount of monohydric C2-C6 alcohol can be from 5% to 20% by weight, preferably from 6% to 15% by weight, and more preferably from 7% to 10% by weight, relative to the weight. total composition.

[00338] The aqueous phase may comprise polyhydric alcohols containing 2 to 8 carbon atoms, such as propylene glycol, ethylene glycol, 1,3-butylene glycol, dipropylene glycol, diethylene glycol, pentylene glycol, hexylene glycol, glycerin, and mixtures thereof.

[00339] The amount of polyhydric alcohol(s), such as glycols, if present, in the aqueous phase according to the present invention may vary from 0.1 to 15% by weight, preferably from 0.5 to 12% by weight, and more preferably from 1 to 8% by weight, relative to the total weight of the composition.

[00340] The composition according to the present invention may be in the form of an emulsion, an O/W emulsion or a W/O emulsion. It is preferred that the composition according to the present invention is in the form of an O/W emulsion A, because it can provide a feeling of freshness due to the water (c) that forms its external phase.

[00341] It is most preferred that the amount of surfactant(s) or emulsifier(s) in the emulsion, in particular an O/W emulsion, is 0.1% by weight or less, preferably 0.01% by weight or less and more preferably 0.001% by weight or less, relative to the total weight of the composition, because the surfactant(s) can adversely affect water resistance. It is particularly preferred that the emulsion, in particular an O/W emulsion, does not include a surfactant or emulsifier.

[00342] The composition according to the present invention can be used as a cosmetic composition. Thus, the cosmetic composition according to the present invention can be intended for application in a keratin substance. Keratin substance herein means a material which contains keratin as a major constituent element, and examples thereof include skin, scalp, nails, lips, hair, and the like. Thus, it is preferable that the cosmetic composition according to the present invention is used in a cosmetic process for the keratin substance, in particular the skin.

[00343] Thus, the cosmetic composition according to the present invention may be a skin cosmetic composition, preferably a skin care composition or a skin makeup composition, in particular a composition for protecting the skin from the rays UV and/or pollutants in the air.

[00344] The composition according to the present invention can be prepared by mixing the above optional and essential ingredients and according to any of the processes that are well known to those skilled in the art.

[00345] The composition according to the present invention can be prepared by simple or easy mixing with a conventional mixing means such as a stirrer. Thus, strong shear, for example by a homogenizer, is not necessary. Also, heating is not necessary. [Film]

[00346] The composition according to the present invention can be used to easily prepare a film. Particles (a) can aggregate and integrate into a continuous film.

[00347] Thus, the present invention also relates to a process for preparing a film, preferably a cosmetic film, with a thickness of preferably more than 0.1 μm, more preferably 1.5 μm or more, and even more preferably 2 µm or more, comprising: - applying on a substrate, preferably a keratin substrate, more preferably skin, the composition according to the present invention; and - drying the composition.

[00348] The upper limit of film thickness according to the present invention is not limited. Thus, for example, the film thickness according to the present invention can be 1 mm or less, preferably 500 µm or less, more preferably 300 µm or less, and even more preferably 100 µm or less.

[00349] Since the process for preparing a film according to the present invention includes the steps of applying the composition according to the present invention on a substrate, preferably a keratin substrate, and more preferably on the skin, and drying the composition, the process according to the present invention does not require any coating or rotational spraying, and therefore it is possible to prepare even a relatively thick film easily. Thus, the process for preparing a film according to the present invention can prepare a relatively thick film without any special equipment such as spin coaters and sputtering machines.

[00350] Even though the film according to the present invention is relatively thick, it is still thin and may be transparent and therefore may not be easy to see. Thus, the film according to the present invention can be preferably used as a cosmetic film.

[00351] If the substrate is not a keratin substrate, such as skin, the composition according to the present invention can be applied over a substrate made of any material other than keratin. Non-keratinous substrate materials are not limited. Two or more materials can be used in combination. Thus, a single type of material or a combination of different types of materials can be used. In any case, it is preferable that the substrate is flexible or elastic.

[00352] If the substrate is not a keratin substrate, it is preferable that the substrate is water-soluble, because it is possible to leave the film according to the present invention by washing the substrate with water. As examples of water-soluble materials, mention may be made of poly(meth)acrylic acids, polyethylene glycols, polyacrylamides, polyvinyl alcohol (PVA), starch, cellulose acetate and the like. PVA is preferable.

[00353] If the non-keratinized substrate is in the form of a sheet, it may have a thickness of more than that of the film according to the present invention, in order to facilitate handling of the film attached to the substrate sheet. The thickness of the non-keratinous substrate sheet is not limited, but can be from 1 µm to 5 mm, preferably from 10 µm to 1 mm, and more preferably from 50 to 500 µm.

[00354] It is more preferable that the film according to the present invention is releasable from the non-keratinous substrate. Release mode is not limited. Therefore, the film according to the present invention can be peeled off the non-keratinous substrate, or released by dissolving the substrate sheet in a solvent such as water.

[00355] The present invention also relates to: (1) A film, preferably a cosmetic film, with a thickness of preferably greater than 0.1 μm, more preferably 1.5 μm or more, and even more preferably 2 μm or more, prepared by a process comprising: - applying on a substrate, preferably a keratin substrate, and more preferably the skin, the composition according to the present invention; and - drying the composition, E (2) A film, preferably a cosmetic film, with a thickness of preferably greater than 0.1 µm, more preferably 1.5 µm or more, and even more preferably 2 μm or more, comprising: - at least one cationic polymer and at least one anionic polymer, - at least one cationic polymer and at least one amphoteric polymer, - at least one anionic polymer and at least one amphoteric polymer, or - at least an amphoteric polymer; - at least one non-polymeric acid with two or more pKa values or salt(s) thereof or at least one non-polymeric base with two or more pKb values or salt(s) thereof same(s), and at least one oil.

[00356] The above explanations about the cationic and anionic polymers as well as the above oil may apply to those in film (1) and (2) above.

[00357] The film thus obtained above can be autonomous. The term "stand-alone" here means that the film can be in the form of a sheet and can be handled as an independent sheet without the aid of a substrate or support. Thus, the term “autonomous” can have the same meaning as “self-sustaining”,

[00358] It is preferable that the film according to the present invention is hydrophobic.

[00359] The term "hydrophobic" in the present specification means that the solubility of the polymer in water (preferably with a volume of 1 liter) between 20 and 40 °C, preferably between 25 and 40 °C and most preferably between 30 and 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, based on the total weight of the polymer. It is most preferable that the polymer is not water soluble.

[00360] If the film according to the present invention is hydrophobic, the film can have water resistant properties and therefore can remain on a keratin substrate such as the skin even if the surface of the keratin substrate is wet due to a, for example, sweat and rain. Thus, when the film according to the present invention provides any cosmetic effect, the cosmetic effect can last for a long period of time.

[00361] On the other hand, the film according to the present invention can be easily removed from a keratin substrate, such as skin, under alkaline conditions, such as a pH of 8 to 12, preferably 9 to 11. film according to the present invention is difficult to remove with water, although it can be easily removed with a soap that can provide such alkaline conditions.

[00362] 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 can 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 can be used.

[00363] The term “biocompatible” polymer in the present specification means that the polymer has no excess interaction between the polymer and cells in the living body, including the skin, and the polymer is not recognized by the living body as a foreign material.

[00364] The term “biodegradable” polymer in the present specification means that the polymer can be degraded or decomposed in a living body due, for example, to the metabolism of the living body itself or to the metabolism of microorganisms that may be present in the living body. Furthermore, the biodegradable polymer can be degraded by hydrolysis.

[00365] If the film according to the present invention includes a biocompatible and/or biodegradable polymer, it is less irritable or non-irritating to the skin and does not cause rash. Furthermore, due to the use of a biocompatible and/or biodegradable polymer, the cosmetic sheet according to the present invention can adhere well to the skin.

[00366] The film according to the present invention can be used for cosmetic treatments of keratin substances, preferably skin, in particular the face. The film according to the present invention can be in any shape or configuration. For example, it can be used as a face mask sheet or as a sticker for a part of the face such as the cheek, nose and eyes.

[00367] If the film according to the present invention includes at least one hydrophilic or water-soluble UV filter, it can provide UV-shielding effects derived from the hydrophilic or water-soluble UV filter. Typically, a hydrophilic or water-soluble UV filter can be washed off the surface of a keratinous substrate, such as skin, by water, such as sweat and rain. However, since the hydrophilic or water-soluble UV filter is included in the film according to the present invention, it is difficult for the hydrophilic or water-soluble UV filter to be removed by water, resulting in lasting UV protection effects. [Process and use of cosmetics]

[00368] The present invention also relates to: - a cosmetic process for a keratin substrate such as skin, comprising: applying the composition of the present invention to the keratin substrate; and drying the composition to form a cosmetic film on the keratin substrate; and - a use of the composition according to the present invention for the preparation of a cosmetic film on a keratin substrate, such as skin.

[00369] Cosmetic process here means a non-therapeutic cosmetic method for caring for and/or forming the surface of a keratin substrate such as skin.

[00370] In both the above process and use, the above cosmetic film is resistant to water with a pH of 7 or less, and is removable with water with a pH of more than 7, preferably 8 or more, and most preferably 9 or more.

[00371] In other words, the above cosmetic film can be resistant to water, under neutral or acidic conditions, such as a pH of 7 or less, preferably in a range of 6 or more and 7 or less, and more preferably in a range of 5 or more and 7 or less, while the above cosmetic film can be removed under alkaline conditions, such as a pH of more than 7, preferably 8 or more, and most preferably 9 or more. The upper pH limit is preferably 13, more preferably 12 and even more preferably 11.

[00372] Therefore, the above cosmetic film can be water resistant and therefore can remain on a keratin substrate such as skin even if the surface of the keratin substrate is wet due to, for example, sweat and rain. On the other hand, the above cosmetic film can be easily removed from a keratin substrate such as skin under alkaline conditions. Therefore, the film according to the present invention is difficult to remove with water, although it can be easily removed with a soap that can provide alkaline conditions.

[00373] If the above cosmetic film includes a UV filter that may be present in the composition according to the present invention, the above cosmetic film can protect a keratin substrate such as skin from UV rays, thus limiting skin darkening, improving skin color and evenness and/or treating skin aging.

[00374] In addition, the above cosmetic film can have cosmetic effects such as absorbing or adsorbing bad odor, changing the appearance of a keratin substrate such as skin, changing the feel of the keratin substrate, and/or protect the keratin substrate from, for example, dirt or pollutants, due to the properties of the polyion complex particles in the cosmetic film, even if the cosmetic film does not include any cosmetic active ingredients.

[00375] In addition, the above cosmetic film can immediately change or modify the appearance of the skin by changing the reflection of light on the skin and the like, even if the cosmetic film does not include any cosmetic active ingredients. Therefore, it may be possible that the above cosmetic film hides skin defects such as pores or wrinkles. In addition, the above cosmetic film can immediately change or modify the feel of the skin, changing the surface roughness on the skin and the like. In addition, the above cosmetic film can immediately protect the skin by covering the surface of the skin and protecting the skin as a barrier from environmental stresses such as pollutants, contaminants and the like.

[00376] The above cosmetic effects can be adjusted or controlled by changing the chemical composition, thickness and/or surface roughness of the above cosmetic film.

[00377] If the above cosmetic film includes at least one additional cosmetic active ingredient other than oil (b), the cosmetic film may have cosmetic effects provided by the additional cosmetic active ingredient(s) (is). For example, if the cosmetic film includes at least one cosmetic active ingredient selected from anti-aging agents, anti-sebum agents, deodorant agents, anti-perspirant agents, bleaching agents and a mixture thereof, the cosmetic film it can treat skin aging, absorb sebum in the skin, control odor in the skin, control sweating in the skin, and/or brighten the skin.

[00378] It is also possible to apply a cosmetic composition for make-up on the cosmetic sheet according to the present invention after being applied to the skin. EXAMPLES

[00379] The present invention will be described in more detail by way of examples. However, they should not be construed as limiting the scope of the present invention. [Polyion Complex 1 Particle Preparation]

[00380] 1.50 g of a 10% aqueous solution by weight of carboxymethylcellulose (CMC) as a polyanion, 16.76 g of a 25% aqueous solution of polylysine (PLYS) as a polycation, 0.58 g of a 40% by weight aqueous solution of styrene/sodium maleic acid (SMA) copolymer as a polyanion, 0.30 g of phenylalanine, 0.50 g of phenoxyethanol and 50.06 g of water were mixed using a stirrer. While stirring, 30.30 g of an aqueous solution containing 33% by weight of terephthalylidene dicamphor sulfonic acid (Mexoryl SX) was added to the above mixture. With the decrease in the pH of the mixture thus obtained, gel particles of the polyionic complex (PGP) were formed. Thus, a stable dispersion of PGP was successfully prepared. The final pH of the PGP dispersion was about 4 to 4.5. The number average particle size obtained was 800 nm.

[00381] The materials used to prepare the PGP dispersion according to Example 1 are shown in Table 1. The numerical values for the ingredient amounts shown in Table 1 are all based on “g”.

[00382] Mexoryl SX:

[00383] An emulsion was prepared using the PGP dispersion prepared as above. Each of the oily ingredients shown in Table 2 was added to the PGP dispersion and mixed with a homogenizer at 2500 rpm for 20 minutes under the conditions that the amount of PGP was 15% by weight with respect to the total weight of the emulsion. The amount of each oily ingredient is also shown in Table 2. The numerical values for the ingredient amounts shown in Table 2 are all based on “% by weight”, (Evaluation 1)

[00384] The emulsions according to Examples 1 to 8 were stored for 1 month. The appearance of each emulsion was observed visually and evaluated according to the following criteria: - Very stable: No phase separation was observed; - Stable: A slight phase separation was observed, but the overall appearance was almost homogeneous.

[00385] The results are shown in Table 2.

[00386] Table 2 shows that PGP can be used to prepare stable emulsions with a variety of oils. Using PGP, emulsions can be prepared without any surfactants. At least up to about 30% by weight oil can be used, but it may be preferred that the amount of oil is about 30% by weight or less.

[00387] Table 2 also shows that polar and non-polar oils can be used to prepare emulsions. It may be preferable to use polar oils such as isononyl isononanoate and caprylic/capric triglyceride in terms of emulsion stability. However, by combination with a gelling agent such as ethylenediamine/stearyl dimer dilinoleate copolymer, non-polar oil such as mineral oil can also be emulsified very stably. (Evaluation 2)

[00388] A suitable small amount of pyranine and nile red was added to the emulsions according to Examples 1 to 8. Pyramine was used as a fluorescent marker for the aqueous phase of the emulsions. Nile red was used as a fluorescent marker for the oil phase of the emulsions.

[00389] The emulsions according to Examples 1 to 8 were observed with a fluorescent microscope. It was observed that the oil was encapsulated with capsules made from PGP. In other words, the oil globules were coated with a film or thin layer made from PGP. Figure 1 shows oil globules encapsulated with capsules made from PGP according to Example 1. Thus, the emulsions according to Examples 1 to 8 were an O/W type of emulsion.

[00390] It was found that PGP is located at the interface between water and oil, as PGP is amphiphilic and insoluble in water and oil, and that PGP encapsulation can be easily performed by a process of simply mixing a dispersion and oil of PGP without heating or strong shear. [Polyonic Complex 2 Particle Preparation] (Example 9)

[00391] 0.02 g of carboxymethylcellulose and 0.2 g of vegetable chitosan were dissolved in 60 g of water and the pH was adjusted to 2.5 in 4% HCl aqueous solution by weight. 1.5 g of an aqueous solution (10% by weight) of arginine was added to this mixture until the pH reached 6.4. While increasing the pH of the mixture, particles of cationic polyionic complex (cationic PGP) were successfully prepared, which were composed of carboxymethylcellulose (polyanion), chitosan (polycation) and arginine (cationic crosslinker).

[00392] The diameter of the cationic PGP was about 15 nm, and the Z potential of the cationic PGP was 30 mV.

[00393] The cationic dispersion of PGP according to Example 9 was stable for 2 weeks at room temperature. Thus, no precipitates were visually observed for 2 weeks. (Example 10)

[00394] 0.05 g of carboxymethylcellulose and 0.2 g of vegetable chitosan were dissolved in 60 g of water and the pH was adjusted to 1.8 in 4% HCl aqueous solution by weight. 3 g of an aqueous solution (10% by weight) of arginine was added to this mixture until the pH reached 4.9. During the pH increase of the mixture, cationic PGP particles, which were composed of carboxymethylcellulose (polyanion), chitosan (polycation) and arginine (cationic crosslinking agent), were successfully prepared.

[00395] The diameter of the cationic PGP was about 370 nm, and the Z potential of the cationic PGP was 6 mV.

[00396] The cationic dispersion of PGP according to Example 1 was stable for 2 weeks at room temperature. Thus, no precipitates were observed visually for 2 weeks. [Preparation of Crosslinked Polyampholyte Particle 1]

[00397] As a polyanion, a 10% by weight aqueous solution of carboxymethylcellulose (CMC) was used. As a polycation, a 25% by weight aqueous solution of polylysine (PLYS) was used. As a polyampholyte, a 20.54% by weight aqueous solution of polyquaternium-53 was used.

[00398] For Examples 11-16, in accordance with the composition shown in Table 3 below, the ingredients shown in Table 3 except for terephthalidene dicamphor sulfonic acid (Mexoryl SX: MSX) were added to a beaker, heated to 70° C and mixed with a stirrer, so that the amount of each of the ingredients is as shown in Table 3. Then, an aqueous solution containing 33% by weight of MSX was added to the above mixture, so that the amount of MSX was as shown in Table 3. With decreasing pH of the mixture thus obtained, cross-linked polyampholyte (CARP) particles were formed. Therefore, a stable dispersion of CARP was successfully prepared. The number average particle size of the obtained particle was 1 µm. The numerical values shown in Table 3 are all based on "% by weight" of the active material in each ingredient. [Preparation of Cross-linked Polyaflyte Particle 2]

[00399] As a polyanion, a 10% by weight aqueous solution of carboxymethylcellulose (CMC) was used. As a polyampholyte, an aqueous solution of polyquaternium-39 at 9.25% by weight was used.

[00400] For Examples 17-21, according to the composition shown in Table 4 shown below, the ingredients shown in Table 4 except terephthalylidene dicamphor sulfonic acid (Mexoryl SX: MSX) and/or phytic acid were added to a beaker heated to 70 °C and mixed with a stirrer, so that the amount of each of the ingredients is as shown in Table 4. Then, an aqueous solution containing 33% by weight of MSX and/or phytic acid was added to the above mixture, so that the amount of MSX and/or phytic acid was as shown in Table 4. With the decrease of the pH of the mixture thus obtained, particles of cross-linked polyampholytes (CARP) were formed. Therefore, a stable dispersion of CARP was successfully prepared. The number average particle size of the obtained particle was 1 µm. Numerical values shown in Table 4 are all based on “% by weight” of active material in each ingredient. (Evaluation 3)

[00401] The appearance of the compositions according to Examples 11-21 was observed with microscopy and evaluated according to the following criteria: - Good: Particles were formed; - Weak: Particles were not formed.

[00402] The results are shown in the line “Formation of CARP” in Tables 3 and 4. [Emulsion preparation]

[00403] An emulsion was prepared using the CARP dispersion prepared as above. Each of the oily ingredients shown below was added to the CARP dispersion and mixed with a homogenizer at 2500 rpm for 20 minutes under the conditions that the amount of CARP was 15% by weight relative to the total weight of the emulsion. The amount of each oily ingredient is also shown below. Numerical values for ingredient amounts shown below are all based on “% by weight”, (Evaluation 4)

[00404] The emulsions prepared with the CARP dispersion according to Examples 11-21 were stored at room temperature for 1 month. The appearance of each of the emulsions was observed visually and evaluated according to the following criteria: - Stable: no phase separation was observed or a slight phase separation was observed, but the appearance was almost homogeneous as a whole; - Unstable: complete phase separation was observed.

[00405] The results are shown in the line “Emulsion Stability” in Tables 3 and 4. (Evaluation 5)

[00406] 50 mg of the emulsion prepared with the CARP dispersion according to each of Examples 11-21 were applied to a surface of a polymethylmethacrylate (PMMA) plate (HELIOPLATE HD6) and dried at room temperature for 1 hour .

[00407] After drying, the PMMA plate was immersed in a calcium chloride solution (0.14 g/l) at room temperature for 15 minutes.

[00408] After immersion, the PMMA plate was pulled up and dried for 1 hour. The surface of the PMMA plate was visually observed and evaluated according to the following criteria: - Good: A film was present on the PMMA plate; - Weak: there was no film on the PMMA board.

[00409] The results are shown in the line “Resistivity to water” in Tables 3 and 4. The obtained film thickness was 1 μm. [Emulsion preparation]

[00410] As a polyampholyte, a 20.54% by weight aqueous solution of polyquaternium-53 was used.

[00411] According to the composition shown in Table 5 shown below, the above ingredient and water were added to a beaker, heated to 70 °C, and mixed with a stirrer, such that the amount of each of the ingredients was as shown in Table 5. Then, an aqueous solution containing 33% by weight of terephthalylidene dicamphor sulfonic acid (Mexoryl SX) was added to the above mixture, so that the amount of Mexoryl SX was as shown in Table 5. of the pH of the mixture thus obtained, particles of cross-linked polyampholytes (CARP) were formed. Therefore, a stable dispersion of CARP was successfully prepared. The numerical values shown in Table 5 are all based on “% by weight” of active material in each ingredient.

[00412] Then, the oily ingredients shown in Table 5 (see shaded lines) were added to the CARP dispersion, and mixed with a homogenizer at 6000 rpm for 20 minutes to prepare an emulsion according to Example 22. The amount of each oily ingredient is also shown in Table 5. The numerical values for the ingredient amounts shown in Table 5 are all based on "% by weight" of the active material in each ingredient. (Evaluation 6)

[00413] A suitable small amount of pyranine and nile red was added to the emulsions according to Example 22. Pyramine was used as a fluorescent marker for the aqueous phase of the emulsion. Nile red was used as a fluorescent marker for the oil phase of the emulsion.

[00414] The emulsion according to Example 22 was observed with a fluorescent microscope. It was observed that the oil was encapsulated with capsules made from CARP. In other words, the oil globules were coated with a film or thin layer made from CARP. Thus, the emulsion according to Example 22 is an O/W type of emulsion.

[00415] It was found that CARP is located at the interface between water and oil, as CARP is amphiphilic and insoluble in water and oil, and that encapsulation of CARP can be easily carried out by a process of simply mixing a dispersion and oil from CARP without heating or strong shear.

Claims (13)

1. COMPOSITION, preferably a cosmetic composition, and more preferably a skin cosmetic composition, characterized in that it comprises: (a) at least one particle, comprising - at least one cationic polymer and at least one anionic polymer, - at least one polymer cationic and at least one amphoteric polymer, - at least one anionic polymer and at least one amphoteric polymer, or - at least one amphoteric polymer, and - at least one non-polymeric acid having two or more pKa values or salt(s) of the same selected from the group consisting of terephthalylidene dicamphor sulfonic acid and salts thereof, Yellow 6, ascorbic acid, phytic acid and salts thereof, and a mixture thereof or - at least one non- polymeric having two or more pKb values or salt(s) thereof selected from the group consisting of arginine, lysine, histidine, cysteine, cystine, tyrosine, tryptophan, ornithine, and a mixture thereof ; (b) at least one oil; and (c) water, wherein the particle (a) is amphiphilic and insoluble in (b) oil or (c) water, a plurality of the particles from (a) are present at the interface between the oil (b) and the water ( c), or a plurality of particles (a) form a capsule with a void, and oil (b) is present in the void, the amount of oil (b) in the composition is from 0.01 to 50% by weight, by relative to the total weight of the composition, and the pH of the composition is from 3 to 9. 2. COMPOSITION, according to claim 1, characterized in that the cationic polymer has at least one positively chargeable and/or positively charged portion selected from the group consisting of a primary, secondary or tertiary amino group, a quaternary ammonium group, a guanidine group, a biguanide group, an imidazole group, an imino group and a pyridyl group, particularly wherein the cationic polymer is selected from the group consisting of alkyldiallylamine cyclopolymers and dialkyldiallylammonium cyclopolymers, such as (co)chloride polydiallyldialkyl ammonium, (co)polyamines, such as (co)polylysines and chitosan, cationic (co)polyamino acids, such as collagen, and salts thereof. 3. COMPOSITION according to any one of claims 1 to 2, characterized in that the anionic polymer has at least one negatively charged and/or negatively charged portion selected from the group consisting of a sulfuric group, a sulfate group, a sulfonic group, a sulfonate group, a phosphoric group, a phosphate group, a phosphonic group, a phosphonate group, a carboxylic group, and a carboxylate group, particularly wherein the anionic polymer is selected from the group consisting of polysaccharides such as alginic acid, hyaluronic acid, and cellulose polymers, anionic (co)polyamino acids, such as (co)polyglutamic acids, (co)poly(meth)acrylic acids, (co)polyamic acids, (co)polystyrene sulfonate, (co) )poly(vinyl sulfates), dextran sulfate, chondroitin sulfate, (co)polymaleic acids, polyfumaric acids, maleic acid (co)polymers, and salts thereof. 4. COMPOSITION according to any one of claims 1 to 3, characterized in that the amphoteric polymer has - at least one positively chargeable and/or positively charged moiety selected from the group consisting of a primary, secondary or tertiary amino group, a quaternary ammonium group, a guanidine group, a biguanide group, an imidazole group, an imino group and a pyridyl group, and - at least one negatively chargeable and/or negatively charged moiety selected from the group consisting of a sulfuric group, a sulfate group, a sulfonic group, a sulfonate group, a phosphoric group, a phosphate group, a phosphonic group, a phosphonate group, a carboxylic group, and a carboxylate group, particularly wherein said amphoteric polymer is selected from the group consisting of polyquaternium-22, polyquaternium-39, polyquaternium-53, polyquaternium-64, polyquaternium-51, polyquaternium-61, and mixtures thereof. 5. COMPOSITION according to any one of claims 1 to 4, characterized in that the amount of polymer(s) in the composition is from 0.001 to 25% by weight, preferably from 0.1 to 20% by weight, and more preferably from 1 to 15% by weight, relative to the total weight of the composition. 6. COMPOSITION according to any one of claims 1 to 5, characterized in that the pH of the composition is from 3.5 to 8.5, and preferably from 4 to 8. 7. COMPOSITION according to any one of claims 1 to 6, characterized in that the amount of particles (a) in the composition is from 0.001 to 60% by weight, preferably from 0.1 to 50% by weight, and more preferably from 1 to 40% by weight, based on the total weight of the composition. 8. COMPOSITION according to any one of claims 1 to 7, characterized in that the amount of oil(s) (b) in the composition is from 0.1 to 40% by weight, and preferably from 1 to 35 % by weight, relative to the total weight of the composition. 9. COMPOSITION according to any one of claims 1 to 8, characterized in that the composition is in the form of an emulsion, preferably an O/W emulsion, and more preferably an O/W emulsion comprising 0.1% by weight or less of surfactant(s), preferably 0.01% by weight or less of surfactant(s) and most preferably no surfactant(s). COMPOSITION according to any one of claims 1 to 9, characterized in that the composition further comprises (e) at least one oil gelling agent. 11. PROCESS FOR PREPARING A FILM, preferably a cosmetic film, characterized in that it comprises: - applying on a substrate, preferably a keratin substrate, and more preferably the skin, the composition, as defined in any one of claims 1 to 10; and - drying the composition. 12. COSMETIC PROCESS FOR A KERATIN SUBSTRATE, such as the skin, characterized in that it comprises - applying to the keratin substrate the composition as defined in any one of claims 1 to 10; and - drying the composition to form a cosmetic film on the keratin substrate. 13. USE OF THE COMPOSITION, as defined in any one of claims 1 to 10, characterized in that it is for the preparation of a cosmetic film on a keratin substrate, such as the skin, in which the cosmetic film is resistant to water with a pH of 7 or less and is removable with water having a pH greater than 7, preferably 8 or greater and most preferably 9 or greater.