Improved emulsion composition

Abstract

The present invention relates to an emulsion composition comprising: (a) at least one cationic polymer; (b) at least one fatty acid; (c) at least one oil-soluble organic UV filter; and (d) at least one oil in an amount of 15% by weight or less relative to the total weight of the composition. The present invention can provide a stable emulsion composition which can prevent a formation of crystals of organic UV filters even though it includes a relatively low amount of oils as solvents.

Description

[0001] DESCRIPTION

[0002] TITLE OF INVENTION

[0003] IMPROVED EMULSION COMPOSITION

[0004] TECHNICAL FIELD

[0005] The present invention relates to an emulsion composition, preferably a sun care composition in the form of a stable O / W emulsion, for a keratin material such as skin.

[0006] BACKGROUND ART

[0007] Sun care products are widely used in order to protect keratin materials, in particular skin, from the damage caused by UV radiation. Among sun care products, emulsion sun care compositions are widely distributed since they are in general water resistant and thus can be retained on the surface of the skin even after exposed to water or sweat.

[0008] In sun care cosmetic products, organic UV filters are widely used to impart a UV protecting property to sun care compositions.

[0009] For example, WO2023 / 277194 discloses a W / O emulsion composition comprising:

[0010] (a) at least one oil-soluble organic UV filter, (b) at least one powder other than microplastic filler, (c) at least one cationic polymer, and (d) at least one oil, wherein the composition comprises microplastic filler in an amount of 5% by weight or less, preferably 3% by weight or less, and more preferably 1% by weight or less, or the composition is free of microplastic filler.

[0011] Also, JP-A-2014-185152 discloses a microcapsule comprising a solid sunscreen and a natural polymer forming the microcapsule for encapsulating the solid sunscreen, wherein the solid sunscreen agent is an inorganic ultraviolet (UV) screening agent, an organic ultraviolet absorber, or a mixture thereof; and the natural polymer is agar, agarose, cellulose, chitosan, or a derivative thereof.

[0012] Also, JP-B- 3766070 discloses a water-resistant O / W type cosmetic comprising cationic polymer emulsifier of a derivative obtained by partially introducing a fatty acid group having 8 to 20 carbon atoms in an amount of 0.1 to 50.0% by mass into chitin, chitosan, or quaternized chitosan; an oily material; water; and a zwitterionic polymer composed of 2-methacryloyloxyethyI phosphocholine and butyl methacrylate copolymer; wherein the cosmetic has an ultraviolet protective effect obtained by formulating at least one of an organic ultraviolet absorbent and inorganic fine particles having an ultraviolet scattering effect.

[0013] However, there may be some cases in that organic UV filters in emulsion compositions form crystals during storage in conventional sun care emulsion compositions.

[0014] Moreover, the formulation of environmentally-friendly cosmetic products, which are designed and developed considering environmental issues, is becoming a major goal in an effort to meet global challenges. It is therefore essential to propose more sustainable compositions, preparation processes and ingredients to address these environmental concerns.

[0015] In this context, it is important to develop new cosmetic compositions, such as new sun care cosmetic compositions, by promoting the use of renewable raw materials and / or materials with a good index of naturalness and / or materials of natural origin.

[0016] Thus, there is still a demand to provide new formulations of stable emulsion compositions which can prevent a formation of crystals of organic UV filters.

[0017] DISCLOSURE OF INVENTION

[0018] An objective of the present invention is to provide a stable emulsion composition which can prevent a formation of crystals of organic UV filters even though it includes a relatively low amount of oils as solvents.

[0019] The above objective of the present invention can be achieved by an emulsion composition, comprising:

[0020] (a) at least one cationic polymer;

[0021] (b) at least one fatty acid;

[0022] (c) at least one oil-soluble organic UV filter; and

[0023] (d) at least one oil in an amount of 15% by weight or less relative to the total weight of the composition.

[0024] The (a) cationic polymer may be selected from polyamines.

[0025] The (a) cationic polymer may be selected from chitosan, polylysine, and a mixture thereof, and preferably is chitosan.

[0026] The (b) fatty acid may be selected from C8-C24, preferably C12-C22saturated or unsaturated, linear or branched fatty acids, such as isopalmitic acid (C16), isostearic acid (C18), myristoleic acid (C14), palmitoleic acid (C16), and oleic acid (C18), and mixtures thereof.

[0027] The (c) oil-soluble organic UV filter may be solid oil-soluble organic UV filter.

[0028] The (c) oil-soluble organic UV filter may be selected from oil-soluble organic UV filter selected from oil-soluble organic UV-A and UV-B filters, such as benzophenone compounds, benzotriazole compounds, bis-resorcinyl triazine compounds, and benzoxazole compounds.

[0029] The (d) oil may be selected from ester oils, preferably ester oils of monoesters of monoacids and of monoalcohols, such as ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2- ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate, isostearyl neopentanoate, and combinations thereof.

[0030] The (a) cationic polymer may be present in an amount ranging from 0.1% to 10% by weight, preferably from 0.5% to 7.5% by weight, and more preferably from 1% to 5% by weight, relative to the total weight of the composition.

[0031] The (b) fatty acid may be present in an amount ranging from 1% to 15% by weight, preferably from 2% to 10% by weight, and more preferably from 3% to 7.5% by weight, relative to the total weight of the composition.

[0032] The (c) oil-soluble organic UV filter may be present in an amount ranging from 0.5% to 10% by weight, preferably from 1% to 7.5% by weight, and more preferably from 2% to 5% by weight, relative to the total weight of the composition.

[0033] The (d) oil may be present in an amount ranging from 0.5% to 15% by weight, preferably from 1% to 12.5% by weight, and more preferably from 3% to 10% by weight, relative to the total weight of the composition.

[0034] The composition may further comprise at least one polyol.

[0035] The composition may further comprise surfactant(s) in an amount of 1% by weight or less, preferably 0.5% by weight or less, and more preferably 0.1% by weight or less, relative to the total weight of the composition, or the composition may be free of any surfactants.

[0036] The present invention also relates to a cosmetic process for a keratin material, such as skin, comprising applying to the keratin material the composition according to the present invention.

[0037] BEST MODE FOR CARRYING OUT THE INVENTION

[0038] After diligent research, the inventors have surprisingly discovered that an emulsion composition comprising a combination of the (a) at least one cationic polymer, the (b) at least one fatty acid, (c) at least one oil-soluble organic UV filter and the (d) at least one oil can provide a stable emulsion composition which can prevent a formation of crystals of the (c) oil-soluble organic UV filters even though it includes a relatively low amount of the (d) oils as solvents for the oil-soluble organic UV filters, and thus completed the present invention.

[0039] Thus, the present invention relates to an emulsion composition, comprising:

[0040] (a) at least one cationic polymer;

[0041] (b) at least one fatty acid;

[0042] (c) at least one oil-soluble organic UV filter; and

[0043] (d) at least one oil in an amount of 15% by weight or less relative to the total weight of the composition.

[0044] Hereinafter, the emulsion composition and cosmetic process according to the present invention will be explained in a more detailed manner.

[0045] [Composition]

[0046] The composition according to the present invention includes (a) at least one cationic polymer, (b) at least one fatty acid, (c) at least one oil-soluble organic UV filter, and (d) at least one oil.

[0047] The composition according to the present invention is of an emulsion form, in particular of liquid or semi-liquid consistency, of O / W, W / O or multiple type of W / O / W or O / W / O. Preferably, the composition according to the present invention has an emulsion form having multiple, discontinuous and dispersed oily phases in a form of droplets, being of O / W, W / O / W or O / W / O. Preferably, the composition according to the present invention has an emulsion form comprising multiple, discontinuous and dispersed oily phases in a continuous aqueous phase. Preferably, the composition according to the present invention is in a form of O / W emulsion comprising multiple, discontinuous, and dispersed oily phases and one continuous aqueous phase.

[0048] The emulsion composition according to the present invention can provide a stable emulsion structure without any use of surfactants(s). It is believed that this effect can be produced by a complex of the (a) cationic polymer and the (b) fatty acid.

[0049] In addition, the present invention can prevent a formation of crystals of the (c) oil-soluble organic UV filters even though it includes a relatively low amount of oils as solvents. It was surprisingly discovered that the combination of the (a) cationic polymer and the (b) fatty acid can inhibit a formation of the crystals of the (c) oil-soluble organic UV filters even though the composition includes a relatively low amount of oils as solvents for oil-soluble organic UV filters. Thus, the composition according to the present invention can provide an improved, watery and / or fresh texture thanks for a small amount of the (d) oils, because oils generally lead to an oily sensation.

[0050] The ingredients in the composition will be described in a detailed manner below.

[0051] (Cationic Polymer)

[0052] The composition according to the present invention comprises (a) at least one cationic polymer. Two or more types of cationic polymers may be used in combination. Thus, a single type of cationic polymer or a combination of different types of cationic polymers may be used.

[0053] A cationic polymer has a positive charge density. The charge density of the cationic 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.

[0054] The cationic polymer may be hydrophilic or water soluble. Thus, in a preferred embodiment, the (a) cationic polymer is present in the aqueous phase(s) of the emulsion composition according to the present invention.

[0055] The molecular weight of the (a) cationic polymer may be more than 20,000. The molecular weight of the cationic polymer may be greater than 30,000, preferably more than 50,000, and more preferably more than 70,000. The upper limit of the molecular weight of the (a) cationic polymer is not particularly limited, but in general less than 500,000, preferably less than 400,000, more preferably less than 300,000, and even more preferably less than 200,000.

[0056] In one embodiment of the present invention, the molecular weight of the (a) cationic polymer ranges more than 20,000 and less than 500,000, preferably more than 30,000 and less than 400,000, more preferably more than 50,000 and less than 300,000, and even more preferably more than 70,000 and less than 200,000.

[0057] Unless otherwise defined in the description, “molecular weight” means a number average molecular weight. The molecular weight can be measured or determined by a gel permeation chromatography, for example, in accordance with ASTM D5296-19.

[0058] The (a) 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 ammonium group, a guanidine group, a biguanide group, an imidazole group, an imino group, and a pyridyl group. The term (primary) “amino group” here means the NH2group.

[0059] The (a) cationic polymer may be a homopolymer or a copolymer. The term “copolymer” is understood to mean both copolymers obtained from two kinds of monomers and those obtained from more than two kinds of monomers, such as terpolymers obtained from three kinds of monomers.

[0060] The (a) cationic polymer may be selected from natural and synthetic cationic polymers. Nonlimiting examples of the cationic polymers are as follows.

[0061] (1) Homopolymers and copolymers derived from acrylic or methacrylic esters and amides and comprising at least one unit chosen from units of the following formulas: wherein:

[0062] R1and R2, which may be identical or different, are chosen from hydrogen and alkyl groups comprising from 1 to 6 carbon atoms, for instance, methyl and ethyl groups;

[0063] R3, which may be identical 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;

[0064] R4, R5, and R6, which may be identical or different, are chosen from alkyl groups comprising from 1 to 18 carbon atoms and benzyl groups, and in at least one embodiment, alkyl groups comprising from 1 to 6 carbon atoms; and

[0065] X is an anion derived from an inorganic or organic acid, such as methosulphate anions and halides, for instance chloride and bromide.

[0066] The copolymers of family (1) may also comprise at least one unit derived from comonomers which may be chosen from acrylamides, methacrylamides, diacetone acrylamides, acrylamides and methacrylamides substituted on the nitrogen atom with (C1-C4) lower alkyl groups, groups derived from acrylic or methacrylic acids and esters thereof, vinyllactams such as vinylpyrrolidone and vinylcaprolactam, and vinyl esters.

[0067] Examples of copolymers of family (1) include, but are not limited to: copolymers of acrylamide and of dimethylaminoethyl methacrylate quaternized with dimethyl sulphate or with a dimethyl halide, copolymers of acrylamide and of methacryloyloxyethyltrimethylammonium chloride described, for example, in European Patent Application No. 0 080 976, copolymers of acrylamide and of methacryloyloxyethyltrimethylammonium methosulphate, quaternized or nonquaternized vinylpyrrolidone / dialkylaminoalkyl acrylate or methacrylate copolymers, described, for example, in French Patent Nos. 2 077 143 and 2 393 573, dimethylaminoethyl methacrylate / vinylcaprolactam / vinylpyrrolidone terpolymers, vinylpyrrolidone / methacrylamidopropyldimethylamine copolymers, quaternized vinylpyrrolidone / dimethylaminopropylmethacrylamide copolymers, and crosslinked methacryloyloxy(C1-C4)alkyltri(C1-C4)alkylammonium salt polymers such as the polymers obtained by homopolymerization of dimethylaminoethyl methacrylate quaternized with methyl chloride, or by copolymerization of acrylamide with dimethylaminoethyl methacrylate quaternized with methyl chloride, the homopolymerization or copolymerization being followed by crosslinking with a compound containing an olefinic unsaturation, for example, methylenebisacrylamide.

[0068] Preferably, copolymers of family (1 ) have a unit derived from vinylpyrrolidone. More preferably, copolymers of family (1) have at least one pendent ring structure derived from vinylpyrrolidone. On the other hand, it is preferable that the copolymers of family (1) comprise no ring structure in the backbone of the polymer.

[0069] The copolymers of family (1) having vinylpyrrolidone units can be selected from:

[0070] (i) the copolymers comprising vinylpyrrolidone units and dimethylaminoethyl methacrylate units, for example: vinylpyrrolidone / dimethylaminoethyl methacrylate copolymers; for example, vinylpyrrolidone / dimethylaminoethyl methacrylate copolymer (20 / 80 by weight) sold under the trade name Copolymer 845 by the company I.S.P., vinylpyrrolidone / dimethylaminoethyl methacrylate copolymers quaternized with diethyl sulphate; for example, vinylpyrrolidone / dimethylaminoethyl methacrylate copolymer quaternized with diethyl sulphate, sold under the trade names Gafquat 734, 755, 755S and 755L by the company I.S.P.,

[0071] - vinylpyrrolidone / dimethylaminoethyl methacrylate / hydrophilic polyurethane copolymers; for example, vinylpyrrolidone / dimethylaminoethyl methacrylate / hydrophilic polyurethane copolymer, sold under the trade name Pecogel GC-310 by the company U.C.I.B., or under the trade names Aquamere C1031 and C1511 by the company Blagden Chemicals, vinylpyrrolidone / dimethylaminoethyl methacrylate / C8-C16olefin copolymers, quaternized or non-quaternized; for example, vinylpyrrolidone / dimethylaminoethyl methacrylate / C8-C16olefin copolymer sold under the trade names Ganex ACP1050 to 1057, 1062-1069 and 1079- 1086 by the company I.S.P., and

[0072] - vinylpyrrolidone / dimethylaminoethyl methacrylate / vinylcaprolactam copolymers; for example, vinylpyrrolidone / dimethylaminoethyl methacrylate / vinylcaprolactam copolymer sold under the trade name Gaffix VC713 by the company I.S.P;

[0073] (ii) the copolymers comprising vinylpyrrolidone units and methacrylamidopropyltrimethylammonium (MAPTAC) units, for example: vinylpyrrolidone / methacrylamidopropyltrimethylammonium copolymers; for example, vinylpyrrolidone / MAPTAC copolymer sold under the trade names Gafquat ACPI 011 and Gafquat HS100 by the company I.S.P., and vinylpyrrolidone / methacrylamidopropyltrimethylammonium / vinylcaprolactam terpolymers; for example, vinylpyrrolidone / MAPTAC / vinylcaprolactam terpolymer sold under the trade names Polymer ACP 1059, 1060 and 1156 by the company I.S.P.; and

[0074] (iii) the copolymers comprising vinylpyrrolidone units and methylvinylimidazolium units, for example: vinylpyrrolidone / methylvinylimidazolium chloride copolymers; for example, vinylpyrrolidone / methylvinylimidazolium chloride copolymer sold under the trade names Luviquat FC370, FC550, FC905 and HM552 by the company BASF, vinylpyrrolidone / methylvinylimidazolium chloride / vinylimidazole copolymers; for example, vinylpyrrolidone / methylvinylimidazolium chloride / vinylimidazole copolymer sold under the trade name Luviquat 8155 by the company BASF, and vinylpyrrolidone / methylvinylimidazolium methosulphate copolymers; for example, vinylpyrrolidone / methylvinylimidazolium methosulphate copolymer sold under the trade name Luviquat MS370 by the company BASF.

[0075] It is preferable that the copolymers of family (1) be chosen from the copolymer comprising vinylpyrrolidone units and dimethylaminoethyl methacrylate units, more preferably chosen from vinylpyrrolidone / dimethylaminoethyl methacrylate copolymers quaternized with diethyl sulphate, and even more preferably Polyquaternium-11.

[0076] (2) Cationic cellulose derivatives such as cellulose ether derivatives comprising quaternary ammonium groups described, for example, in French Patent No. 1 492 597, such as the polymers sold under the names "JR" (JR 400, JR 125, JR 30M) or "LR" (LR 400, LR 30M) by the company Union Carbide Corporation. These polymers are also defined in the CTFA dictionary as quaternary ammoniums of hydroxyethylcellulose that have reacted with an epoxide substituted with a trimethylammonium group.

[0077] It is preferable that the cationic cellulose derivatives be quaternized hydroxyethyl celluloses modified with at least one quaternary ammonium group comprising at least one fatty chain, such as alkyl, arylalkyl or alkylaryl groups comprising at least 8 carbon atoms, or mixtures thereof. The alkyl radicals home by the quaternary ammonium group may preferably contain from 8 to 30 carbon atoms, especially from 10 to 30 carbon atoms. The aryl radicals preferably denote phenyl, benzyl, naphthyl or anthryl groups.

[0078] More preferably, the cationic cellulose derivatives may comprise at least one quaternary ammonium group including at least one C8-C30hydrocarbon group.

[0079] Examples of quaternized alkylhydroxyethylcelluloses containing C8-C30fatty chains that may be mentioned include the products Quatrisoft LM 200, Quatrisoft LM-X 529-18-A, Quatrisoft LM-X 529-18B (C12 alkyl) and Quatrisoft LM-X 529-8 (C18 alkyl) or Softcat Polymer SL100, Softcat SX-1300X, Softcat SX-1300H, Softcat SL-5, Softcat SL-30, Softcat SL-60 , Softcat SK-MH, Softcat SX-400X, Softcat SX-400H, SoftCat SK-L, Softcat SK-M, and Softcat SK-H, sold by the company Amerchol and the products Crodacel QM, Crodacel, QL (C12 alkyl) and Crodacel QS (C18 alkyl) sold by the company Croda.

[0080] It is preferable that the cationic polymer be selected from the group consisting of Polyquaternium- 24, Polyquaternium-67 and mixtures thereof. Polyquaternium-67 is most preferable.

[0081] From another viewpoint, the cationic cellulose derivatives could also be chosen among cationic cellulose ether(s), comprising from 4 000 to 10 000 anhydroglucose units, said anhydroglucose units being substituted with at least: (i) one substituent of formula

[0082] [R4R5R6R9N+](X2-) in which

[0083] R4and R5represent, independently of one another, a methyl or ethyl group,

[0084] R6represents a linear or branched C8-C24alkyl group or an aralkyl group in which the linear or branched alkyl part is C8-C24,

[0085] R9represents a divalent group which allows the attachment to the anhydroglucose group and which is chosen from -(B)q-CH2-CHOH-CH2- and -CH2CH2-, q denoting 0 or 1,

[0086] B denoting the divalent group -(CH2CH2O)n-, n' being an integer ranging from 1 to 100, X2- represents an anion; and

[0087] (ii) one substituent of formula

[0088] [R1R2R3R8N+](X1-) in which:

[0089] R1, R2and R3represent, independently of one another, a methyl or ethyl group,

[0090] R8represents a divalent group which allows the attachment to the anhydroglucose group and which is chosen from -(A)p-CH2-CHOH-CH2- and -CH2CH2-, p denoting 0 or 1,

[0091] A denoting a divalent group -(CH2CH2O)n-, n being an integer ranging from 1 to 100, and X1- represents an anion.

[0092] Preferably, the substituent (i) of formula [R4R5R6R9N+](X2-) is present at an average of from 0.0003 to 0.08 mol, per mole of anhydroglucose units.

[0093] The cationic cellulose ethers that can be used in the compositions according to the present invention are preferably hydroxyethyl celluloses or hydroxypropyl celluloses. The cationic cellulose ethers that can be used in the compositions according to the present invention preferably comprise more than 4500, advantageously more than 5000, and more preferably more than 6000 anhydroglucose units.

[0094] Preferably, the cationic cellulose ethers that can be used in the compositions according to the present invention comprise up to 9000, and more preferably up to 8000 anhydroglucose units.

[0095] These cationic cellulose ethers and the process for the preparation thereof are described in application WO 2005 / 000903.

[0096] According to a preferred variant, the cationic cellulose ethers that can be used in the compositions according to the present invention are formed from at least one unit (IV) and at least one of the following units (I), (II) and (III): X2- with the proviso that: the total number of units (I)+(II)+(III)+(IV) is between 4000 and 10 000; the [(III)+(IV)] / [(I)+(II)+(III)+(IV)] ratio ranges from 0.0003 to 0.8; the [(II)+(IV)] / [(I)+(II)+(III)+(IV)] ratio ranges from 0.02 to 0.9; the integers n and n', independently of one another, range from 0 to 5;

[0097] R1, R2, R3, R4and R5represent, independently of one another, a methyl or ethyl group;

[0098] R6represents a linear or branched C8-C24, preferably C10-C24, more preferably C12-C24and better still C12-C15, an Ikyl group or an aralkyl group in which the linear or branched alkyl part is C8-C24; X1- and X2- represent anions preferably chosen, independently of one another, from phosphate, nitrate, sulphate and halide (Cl-, Br-, F-, I-) ions.

[0099] According to a particular variant, the cationic cellulose ethers that can be used in the compositions according to the present invention are formed from at least one unit (IV) and at least one of the units (I), (II) or (III) above, in which R6is a linear dodecyl group.

[0100] Among the cationic cellulose ethers that can be used in the compositions of the present invention, mention may be made of the polymers of Softcat SL-5, SL-30, SL-60 and SL-100 type (INCI: Polyquaternium-67) sold by the company Amerchol. The cationic cellulose ethers that are particularly preferred are the polymers of SL-60 and SL-100 type .

[0101] (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 U.S. Pat. No. 4,131,576, such as hydroxyalkylcelluloses, for instance, hydroxymethyl-, hydroxyethyl-, and hydroxypropylcelluloses grafted, for example, with a salt chosen from methacryloylethyltrimethylammonium, methacrylamidopropyltrimethylammonium, and dimethyldiallylammonium salts.

[0102] Commercial products corresponding to these polymers include, for example, the products sold under the name "Celquat® L 200" and "Celquat® H 100" by the company National Starch.

[0103] (4) Non-cellulose-based cationic polysaccharides described in U.S. Pat. Nos. 3,589,578 and 4,031,307, such as guar gums comprising cationic trialkylammonium groups, cationic hyaluronic acid, and dextran hydroxypropyl trimonium chloride. Guar gums modified with a salt, for example, the chloride, of 2,3-epoxypropyltrimethylammonium (guar hydroxypropyltrimonium chloride) may also be used.

[0104] Such products are sold, for instance, under the trade names JAGUAR® C13 S, JAGUAR® C15, JAGUAR® C17, and JAGUAR® C162 by the company MEYHALL.

[0105] (5) Polymers comprising piperazinyl units and divalent alkylene or hydroxyalkylene groups comprising straight or branched chains, optionally interrupted with at least one entity chosen from oxygen, sulphur, nitrogen, aromatic rings, and heterocyclic rings, and also the oxidation and / or quaternization products of these polymers. Such polymers are described, for example, in French Patent Nos. 2 162 025 and 2 280 361.

[0106] (6) Water-soluble polyamino amides prepared, for example, by polycondensation of an acidic compound with a polyamine; these polyamino amides possibly being crosslinked with an entity chosen from epihalohydrins; diepoxides; dianhydrides; unsaturated dianhydrides; bisunsaturated derivatives; bishalohydrins; bisazetidiniums; bishaloacyidiamines; bisalkyl halides; oligomers resulting from the reaction of a difunctional compound which is reactive with an entity chosen from bishalohydrins, bisazetidiniums, bishaloacyldiamines, bisalkyl halides, epihalohydrins, diepoxides, and bisunsaturated 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 may be quaternized. Such polymers are described, for example, in French Patent Nos. 2 252 840 and 2 368 508.

[0107] (7) Polyamino amide derivatives resulting from the condensation of polyalkylene poly amines with polycarboxylic acids, followed by alkylation with difunctional agents, for example, adipic acid / dialkylaminohydroxyalkyldialkylenetriamine polymers in which the alkyl group comprises from 1 to 4 carbon atoms, 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 instance, in French Patent No. 1 583 363. In at least one embodiment, these derivatives may be chosen from adipic acid / dimethylaminohydroxypropyldiethylenetriamine polymers.

[0108] (8) Polymers obtained by reaction of 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 the polyalkylene polyamine to the dicarboxylic acid may range from 0.8:1 to 1.4:1 ; the polyamino amide resulting therefrom being reacted with epichlorohydrin in a molar ratio of epichlorohydrin relative to the 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. Nos. 3,227,615 and 2,961,347.

[0109] (9) Cyclopolymers of alkyldiallylamine and cyclopolymers of dialkyldiallyl-ammonium, such as homopolymers and copolymers comprising, as the main constituent of the chain, at least one unit chosen from units of formulas (la) and (lb): wherein: k and t, which may be identical or different, are equal to 0 or 1 , the sum k+t being equal to 1 ;

[0110] R12is chosen from hydrogen and methyl groups; R10and R11, which may be identical or different, are chosen from allcyl 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 lower (C1-C4)amidoalkyl groups, or R10and R11may form, together with the nitrogen atom to which they are attached, heterocyclic groups such as piperidinyl and morpholinyl; and

[0111] Y' is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulphate, bisulphite, sulphate, and phosphate. These polymers are described, for example, in French Patent No. 2 080 759 and in its Certificate of Addition 2 190406.

[0112] In one embodiment, R10and R11, which may be identical or different, are chosen from alkyl groups comprising from 1 to 4 carbon atoms.

[0113] Examples of such polymers include, but are not limited to, (co)polydiallyldialkyl ammonium chloride such as the dimethyidiallylammonium chloride homopolymer sold under the name "MERQUAT® 100" by the company CALGON (and its homologues of low weight-average molecular mass) and the copolymers of diallyldimethylammonium chloride and of acrylamide sold under the name "MERQUAT® 550".

[0114] 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 hydroxyalkyl aliphatic groups, or alternatively R13, R14, R15, and R16may 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 identical or different, are chosen from linear or branched C1-C6alkyl groups substituted with at least one group chosen from nitrile groups, ester groups, acyl groups, amide groups, -CO-O-R17-E groups, and -CO-NH-R17-E groups, wherein R17is an alkylene group and E is a quaternary ammonium group;

[0115] A1and B1, which may be identical or different, are chosen from polymethylene groups comprising from 2 to 20 carbon atoms, which may be linear or branched, saturated or unsaturated, and which may comprise, linked or intercalated in the main chain, at least one entity chosen from aromatic rings, oxygen, sulphur, sulphoxide groups, sulphone groups, disulphide groups, amino groups, alkylamino groups, hydroxyl groups, quaternary ammonium groups, ureido groups, amide groups, and ester groups, and

[0116] X- is an anion derived from an inorganic or organic acid;

[0117] A1, R13, and R15may form, together with the two nitrogen atoms to which they are attached, a piperazine ring; if A1is chosen from linear or branched, saturated or unsaturated alkylene or hydroxyalkylene groups, B1may be chosen from:

[0118] -(CH2)n-CO-E'-OC-(CH2)n- wherein E' is chosen from: a) glycol residues of formula -O-Z-O-, wherein Z is chosen from linear or branched hydrocarbonbased groups and groups of the following formulas: -(CH2-CH2-O)x-CH2-CH2-

[0119] -[CH2-CH(CH3)-O]y-CH2-CH(CH3)- wherein x and y, which may 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-secondary diamine residue such as piperazine derivatives; c) bis-primary diamine residues of formula -NH-Y-NH-, wherein Y is chosen from linear or branched hydrocarbon-based groups and the divalent group -CH2-CH2-S-S-CH2-CH2-; and d) ureylene groups of formula -NH-CO-NH-.

[0120] In at least one embodiment, X- is an anion such as chloride or bromide.

[0121] 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 U.S. Pat. Nos. 2,273,780; 2,375,853; 2,388,614;

[0122] 2,454,547; 3,206,462; 2,261,002; 2,271,378; 3,874,870; 4,001,432; 3,929,990; 3,966,904;

[0123] 4,005,193; 4,025,617; 4,025,627; 4,025,653; 4,026,945; and 4,027,020.

[0124] 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.

[0125] (11) Polyquaternary ammonium polymers comprising units of formula (IV): wherein:

[0126] 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(OCH2CH2)pOH groups, wherein p is chosen from integers ranging from 0 to 6, with the proviso that R18, R19, R20, and R21are not simultaneously hydrogen, r and s, which may be identical or different, are chosen from integers ranging from 1 to 6, q is chosen from integers ranging from 0 to 34,

[0127] X- is an anion such as a halide, and

[0128] A is chosen from radicals of dihalides and -CH2-CH2-O-CH2-CH2-. Such compounds are described, for instance, in European Patent Application No. 0 122 324.

[0129] (12) Quaternary polymers of vinylpyrrolidone and of vinylimidazole.

[0130] 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, condensates of polyamines and of epichlorohydrin, quaternary polyureylenes, and chitin derivatives.

[0131] 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 "JR 400" by the company UNION CARBIDE CORPORATION, cationic cyclopolymers, for instance, the homo-polymers and copolymers of dimethyldiallylammonium chloride sold under the names MERQUAT® 100, MERQUAT® 550, and MERQUAT® S by the company CALGON, guar gums modified with a 2,3-epoxypropyltrimethylammonium salt, and quaternary polymers of vinylpyrrolidone and of vinylimidazole.

[0132] (13) Polyamines

[0133] As the cationic polymer, it is also possible to use (co)polyamines, which may be homopolymers or copolymers, with a plurality of amino groups. The amino group may be a primary, secondary, tertiary or quaternary amino group. The amino group may be present in a polymer backbone or a pendent group, if present, of the (co)polyamines.

[0134] As examples of the (co)polyamines, mention may be made of chitosan, (co)polyallylamines, (co)polyvinylamines, (co)polyanilines, (co)polyvinylimidazoles,

[0135] (co)poly dimethylaminoethylenemethacrylates, (co)polyvinylpyridines such as (co)poly-l-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)polyomithines, (co)polyarginines, (co)polyhistidines, aminodextrans, aminocelluloses, amino(co)polyvinylacetals, and salts thereof.

[0136] As the (co)polyamines, it is preferable to use chitosans. Chitosan is well known. Chitosan can be a linear polysaccharide composed of randomly distributed β-(1→ 4)-linked D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine (acetylated unit). The actylation degree of chitosan may be from 1 .0% to 10.0%, preferably from 2.0% to 8.0%, and more preferably from 3.0% to 6.0%. Chitosan can be prepared by, for example, treating the chitin shells of shrimp and other crustaceans with an alkaline substance, such as sodium hydroxide. Thus, the cationic polymer may be polyamines of polysaccharides, preferably linear polysaccharides.

[0137] As the (co)polyamines, it is preferable to use (co)poly lysines. Polylysine is well known.

[0138] Poly lysine can be a natural homopolymer of L-lysine that can be produced by bacterial fermentation. For example, polylysine can be ε-Poly-L-lysine, typically used as a natural preservative in food products. Polylysine is a polyelectrolyte which is soluble in polar solvents such as water. Polylysine is commercially available in various forms, such as poly D-lysine and poly L-lysine. Polylysine can be in salt and / or solution form.

[0139] (14) Cationic Poly aminoacids As the cationic polymer, it may be possible use cationic polyaminoacids, which may be cationic homopolymers or copolymers, with a plurality of amino groups and carboxyl groups. The amino group may be a primary, secondary, tertiary or quaternary amino group. The amino group may be present in a polymer backbone or a pendent group, if present, of the cationic polyaminoacids. The carboxyl group may be present in a pendent group, if present, of the cationic polyaminoacids.

[0140] As examples of the cationic polyaminoacids, mention may be made of cationized collagen, cationized gelatin, steardimonium hydroxypropyl hydrolyzed wheat protein, cocodimonium hydroxypropyl hydrolyzed wheat protein, hydroxypropyltrimonium hydrolyzed conchiolin protein, steardimonium hydroxypropyl hydrolyzed soy protein, hydroxypropyltrimonium hydrolyzed soy protein, cocodimonium hydroxypropyl hydrolyzed soy protein, and the like.

[0141] It may be preferable that the cationic polymer be selected from the group consisting of cyclopolymers of alkyldiallylamine and cyclopolymers of dialkyldiallylammonium such as (co)polydiallyldialkyl ammonium chloride, (co)polyamines such as (co)polylysines, cationic (co)polyaminoacids such as cationized collagen, and salts thereof.

[0142] The cationic polymer may be a polyquaternium polymer or a polymeric quaternary ammonium salt.

[0143] Polymeric quaternary ammonium salts are cationic polymers comprising at least one quaternized nitrogen atom. Mention may in particular be made, as polymeric quaternary ammonium salts, of the Polyquaternium products (CTFAname), which contribute mainly to the quality of the foam and the feeling of the skin after use, in particular the feeling of the skin after use. These polymers can preferably be chosen from the following polymers: Polyquaternium-5, such as the product Merquat 5 sold by Nalco;

[0144] Polyquaternium-6, such as the product Salcare SC 30 sold by BASF and the product Merquat 100 sold by Nalco;

[0145] Polyquaternium-7, such as the products Merquat S, Merquat 2200, Merquat 7SPR, and Merquat 550 sold by Nalco and the product Salcare SC 10 sold by BASF;

[0146] Polyquaternium- 10, such as the product Polymer JR400 sold by Amerchol;

[0147] Polyquaternium-11, such as the products Gafquat 755, Gafquat 755N and Gafquat 734 sold by ISP;

[0148] Polyquaternium- 15, such as the product Rohagit KF 720 F sold by Rohm;

[0149] Polyquaternium- 16, such as the products Luviquat FC905, Luviquat FC370, Luviquat HM552 and Luviquat FC550 sold by BASF;

[0150] Polyquaternium-28, such as the product Styleze CC10 sold by ISP;

[0151] Polyquaternium-44, such as the product Luviquat Care sold by BASF;

[0152] Polyquaternium-46, such as the product Luviquat Hold sold by BASF;

[0153] Polyquatemium-47, such as the product Merquat 2001 sold by Nalco; and Polyquatemium-67, such as the product Softcat sold by Amerchol.

[0154] The (a) cationic polymer is preferably selected from polyamines, more preferably chitosan, polylysine, and a mixture thereof, and in particular chitosan.

[0155] The amount of the (a) cationic polymer(s) in the composition according to the present invention may be 0.1% by weight or more, preferably 0.5% by weight or more, and more preferably 1% by weight or more.

[0156] The amount of the (a) cationic polymer(s) in the composition according to the present invention may be 10% by weight or less, preferably 7.5% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition.

[0157] The amount of the (a) cationic polymer(s) in the composition according to the present invention may range from 0.1% to 10% by weight, preferably from 0.5% to 7.5% by weight, and more preferably from 1% to 5% by weight, relative to the total weight of the composition.

[0158] In the context of the present specification, any combinations of the upper limit values and the lower limit values above can be available to represent the preferred range of the amount.

[0159] (Fatty Acid)

[0160] The composition according to the present invention comprises (b) at least one fatty acid. Two or more fatty acids may be used in combination. Thus, a single type of fatty acid or a combination of different types of fatty acids may be used.

[0161] The term “fatty acid” here means a carboxylic acid with a long aliphatic carbon chain.

[0162] The (b) fatty acid has at least 4 carbon atoms. Preferably, the (b) fatty acid has at least 8 carbon atoms, and more preferably at least 12 carbon atoms, and in particular, at least 14 carbon atoms. The (b) fatty acid may comprise up to 24 carbon atoms, preferably up to 22 carbon atoms, and more preferably up to 20 carbon atoms. It is preferable that the (b) fatty acid be selected from C8-C24fatty acid, more preferably C12-C22fatty acid, and even more preferably C14-C20fatty acid.

[0163] The (b) fatty acid may be selected from saturated or unsaturated, linear or branched fatty acids. Thus, the (b) fatty acid may be selected from C8-C24, preferably C12-C22, more preferably C14-C20saturated or unsaturated, linear or branched fatty acids.

[0164] As the unsaturated, linear or branched fatty acids, mono-unsaturated, linear or branched fatty acids or polyunsaturated, linear or branched fatty acids may be used. As the unsaturated moiety of the unsaturated, linear or branched fatty acids, a carbon-carbon double bond or a carbon-carbon triple bond may be mentioned.

[0165] As the saturated fatty acid, mention may be made of linear or branched saturated fatty acids, for example, caprylic acid (C8), pelargonic acid (C9), capric acid (C10), lauric acid (C12), myristic acid (C14), pentadecanoic acid (C15), palmitic acid (C16), isopahnitic acid (C16), heptadecanoic acid (C17), stearic acid (C18), isostearic acid (C18), nonadecanoic acid (C19), arachidic acid (C20), behenic acid (C22), and lignoceric acid (C24).

[0166] In one preferred embodiment, the saturated fatty acid is selected from branched saturated fatty acids, such as isopahnitic acid (C16), isostearic acid (C18), and mixtures thereof.

[0167] As the unsaturated fatty acid, mention may be made of linear unsaturated fatty acids, for example, myristoleic acid (C14), palmitoleic acid (C16), oleic acid (C18), linoleic acid (C18), linolenic acid (C18), elaidic acid (C18), arachidonic acid (C20), eicosenoic acid (C20), erucic acid (C22), and nervonic acid (C24).

[0168] In one preferred embodiment, the unsaturated fatty acid is selected from linear or branched monounsaturated, preferably linear mono-unsaturated fatty acids, for example, myristoleic acid (C14), palmitoleic acid (C16), and oleic acid (C18), and mixtures thereof. It is preferable that the (b) fatty acid be selected from C8-C24, preferably C12-C22, saturated or unsaturated, linear or branched fatty acids, and more preferably from the group consisting of myristic acid, palmitic acid, isopalmitic acid, stearic acid, isostearic acid, oleic acid, linoleic acid, arachidic acid, arachidonic acid, eicosenoic acid, behenic acid, and mixtures thereof.

[0169] In another preferred embodiment, the (b) fatty acid is selected from C14-C22saturated branched fatty acids and C14-C22linear mono-unsaturated fatty acids, such as isopalmitic acid (C16), isostearic acid (C18), myristoleic acid (C14), palmitoleic acid (C16), and oleic acid (C18), and mixtures thereof.

[0170] The (b) fatty acid may be in the form of a free acid or in the form of a salt thereof. As a salt of the fatty acid, mention may be made of an inorganic salt such as an alkali metal salt (a sodium salt, a potassium salt, or the like) and an alkaline earth metal salt (a magnesium salt, a calcium salt, or the like); and an organic salt such as an ammonium salt (a quaternary ammonium salt or the like) and an amine salt (a triethanolamine salt, a triethylamine salt, or the like). A single type of fatty acid salt or a combination of different type of fatty acid salts may be used. Further, a combination of one or more fatty acid in the form of a free acid and one or more fatty acid in the form of a salt may be used, in which one or more type of salts may also be used.

[0171] The amount of the (b) fatty acid(s) in the composition may be 1% by weight or more, preferably 1% by weight or more, and more preferably 3% by weight or more, relative to the total weight of the composition.

[0172] The amount of the (b) fatty acid(s) in the composition according to the present invention may be 15% by weight or less, preferably 10% by weight or less, and more preferably 7.5% by weight or less, relative to the total weight of the composition.

[0173] The composition according to the present invention may contain the (b) fatty acid(s) in an amount of from 1% to 15% by weight, preferably from 2% to 10% by weight, and more preferably from 3% to 7.5% by weight, relative to the total weight of the composition.

[0174] While not wishing to be bound by theory, it is believed that the (a) cationic polymer(s) and the (b) fatty acid(s) can form a complexation by ionic bonding between positively charged functional groups from the (a) cationic polymer(s), such as amino groups, and -COO" group(s) from the (b) fatty acid(s). It is believed that the complex can exist on the interface between aqueous phase and oily phase, and thus, the present invention can provide stable emulsion structure without including any surfactants.

[0175] (Oil-soluble Organic UV Filter)

[0176] The composition according to the present invention comprises (c) at least one oil-soluble organic UV filter. Two or more 1 oil-soluble organic UV filters may be used in combination. Thus, a single type of oil-soluble organic UV filter or a combination of different types of oil-soluble organic UV filters may be used.

[0177] The term “oil-soluble” is inter-changeable with liposoluble in the context. The (c) oil-soluble organic UV filter(s) may be present in the oily phase in the composition according to the present invention. The term “oil-soluble UV filter” here represents UV filters which are soluble in oils at a concentration of at least 1% by weight, for example 5% or 10% by weight, relative to the total weight of the oils at room temperature (25°C) and atmosphere pressure (105Pa).

[0178] The term “UV” here comprises the UV-B region (260-320 nm in wavelength), the UV-A region (320-400 nm in wavelength), and the high energy visible light region (400-450 nm in wavelength). Therefore, a UV filter means any material which has filtering effects in the wavelength of UV rays, in particular the UV-A, UV-B, and high energy visible light regions.

[0179] The UV filter(s) used for the present invention may be active in the UV-A and / or UV-B region, preferably in each of the UV-A and UV-B regions alone or in combination. Therefore, the UV filter(s) used in the present invention include(s) a UV-A filter capable of absorbing UV radiation from 320 to 400 nm, a UV-B filter capable of absorbing UV radiation from 280 to 320 nm, and a UV-A and UV-B filter capable of absorbing UV radiation from 280 to 400 nm.

[0180] The (c) oil-soluble organic UV filter may be solid or liquid. The terms “solid” and “liquid” mean solid and liquid, at room temperature (25°C) and atmosphere pressure (105Pa). Preferably, the (c) oil-soluble organic UV filter is solid at room temperature (25°C) and atmosphere pressure (105Pa).

[0181] The oil-soluble organic UV-A filters used in the present invention may include, but are not limited to, aminobenzophenone compounds, dibenzoylmethane compounds, anthranilic acid compounds, and 4,4-diarylbutadiene compounds.

[0182] As the aminobenzophenone compounds, mention may be made of n-hexyl 2-(4-diethlamino-2- hydroxybenzoyl)benzoate, the alternative name of which is diethylamino hydroxybenzoyl hexyl benzoate (DHHB), sold under the trade name “Uvinul A+” from BASF.

[0183] As the dibenzoylmethane compounds, mention may be made of 4-isopropyldibenzoylmethane, sold under the name of “Eusolex 8020” from Merck, l-(4-methoxy-l-benzofuran-5-yl)-3- phenylpropane- 1,3-dione, sold under the name of “Pongamol” from Quest, l-(4-(tert-butyl)phenyl)- 3-(2-hydroxyphenyl)propane-l,3-dione, and butyl methoxy dibenzoylmethane, sold under the trade name “Parsol 1789” from Hoffinann-La Roche.

[0184] As the anthranilic acid compounds, mention may be made of menthyl anthranilate marketed under the name "NEO HELIPAN MA" by Symrise.

[0185] As the 4,4-diarylbutadiene compounds, mention may be made of 1,1 -dicarboxy (2,2'- dimethylpropyl)-4,4-diphenylbutadiene and diphenyl butadiene malonates and malononitriles.

[0186] The oil-soluble organic UV-B filters used in the present invention may include, but are not limited to, triazine compounds, para-aminobenzoic acid compounds, salicylic compounds, cinnamate compounds, β,β-diphenylacrylate compounds, benzylidenecamphor compounds, phenylbenzimidazole compounds, imidazoline compounds, benzalmalonate compounds, and merocyanine compounds.

[0187] As the triazine compounds, mention may be made of ethylhexyl triazone, marketed under the name “UVINUL T-150” by BASF, diethylhexyl butamido triazone, marketed under the name “UVASORB HEB” by SIGMA 2V, 2,4,6-tris(dineopentyl 4’-aminobenzalmalonate)-s-triazine, 2,4,6-tris(diisobutyl 4’-aminobenzalmalonate)-s-triazine, 2,4-bis(dineopentyl 4’- aminobenzalmalonate)-6-(n-butyl 4’-aminobenzoate)-s-triazine, and 2,4-bis(n-butyl 4’- aminobenzoate)-6-(aminopropyltrisiloxane)-s-triazine.

[0188] As the para-aminobenzoic acid derivatives, mention may be made of para-aminobenzoates (PAB A), for example, ethyl PABA (para-aminobenzoate), ethyl dihydroxypropyl PABA, and ethylhexyl dimethyl PABA, marketed under the name “ESCALOL 5972 from ISP.

[0189] As the salicylic compounds, mention may be made of homosalate, marketed under the name “Eusolex HMS” by Rona / EM industries, and ethylhexyl salicylate, marketed under the name “NEO HELIOPAN OS” by Symrise.

[0190] As the cinnamate compounds, mention may be made of ethylhexyl methoxycinnamate, marketed under the name “PARSOL CX” by DSM NUTRITIONAL PRODUCTS, isopropyl ethoxy cinnamate, isoamyl methoxy cinnamate, marketed under the name “NEO HELIOPAN E 1000” by Symrise, diisopropyl methylcinnamate, cinoxate, and glyceryl ethylhexanoate dimethoxycinnamate.

[0191] As the β,β-diphenylacrylate compounds, mention may be made of octocry lene, marketed under the name “UVINUL N539” by BASF, and etocrylene, marketed under the name “UVINUL N35” by BASF.

[0192] As the benzylidenecamphor compounds, mention may be made of 3 -benzylidene camphor, marketed under the name “MEXORYL SD” from CHIMEX, methylbenzylidene camphor, marketed under the name “EUSOLEX 6300” by MERCK, polyacrylamidomethyl benzylidene Camphor, marketed under the name “MEXORYL SW” by CHIMEX, and terephthalylidene dicamphor sulfonic acid, marketed under the name “Mexoryl SX” by Chimex.

[0193] As the phenylbenzimidazole compounds, mention may be made of phenylbenzimidazole sulfonic acid, marketed under the name “Eusolex 232” by Merck, and disodium phenyl dibenzimidazole tetrasulfonate, marketed under the name “Neo Heliopan AP” by Haarmann and Reimer.

[0194] As the imidazoline compounds, mention may be made of ethylhexyl dimethoxybenzylidene dioxoimidazoline propionate.

[0195] As the benzalmalonate compounds, mention may be made of polyorganosiloxane containing a benzalmalonate moiety, for example, Polysilicone- 15, marketed under the name “Parsol SEX” by DSM NUTRITIONAL PRODUCTS, and di-neopentyl 4'-methoxybenzalmalonate.

[0196] The oil-soluble organic UV filters of the present invention may comprise oil-soluble organic UV-A and UV-B filters, which cover UV-A and UV-B regions. The following are non-limiting examples of the oil-soluble organic UV-A and UV-B filters:

[0197] - Benzophenone compounds, such as benzophenone- 1 marketed under the name “UVINUL 400” by BASF, benzophenone-2 marketed under the name “UVINUL 500” by BASF, benzophenone- 3 or oxybenzone marketed under the name “UVINUL M40” by BASF, benzophenone-6 marketed under the name “Helisorb 11” by Norquay, benzophenone-8 marketed under the name “Spectra- Sorb UV-24” by American Cyanamid, benzophenone- 10, benzophenone-11, and benzophenone- 12;

[0198] - benzotriazole compounds such as drometrizole trisiloxane marketed under the name “Silatrizole” by Rhodia Chimie, bumetrizole marketed under the name “TINOGUARTD AS” by CIBA- GEIGY ,and , phenylbenzotriazole derivatives: 2-(2H-benzotriazole-2-yl)-6-dodecyl-4- methylpheno, branched and linear;

[0199] - bis-resorcinyl triazine compounds, such as bis-ethylhexyloxyphenol methoxyphenyl triazine marketed under the name “TINOSORB S” by CIBA-GEIGY; and

[0200] - benzoxazole compounds, such as 2, 4-bis[5-(l -dimethylpropyl) benzoxazol-2-yl(4-phenyl)imino]- 6-(2-ethylhexyl)imino-l,3,5-triazine marketed under the name “Uvasorb K2A” by Sigma 3 V.

[0201] Preferably, the oil-soluble organic UV filter may be selected from aminobenzophenone compounds, such as diethylamino hydroxybenzoyl hexyl benzoate (DHHB), dibenzoylmethane compounds, such as butyl methoxydibenzoylmethane, triazine compounds, such as ethylhexyl triazone, salicylic compounds, such as homosalate, β,β-diphenylacrylate compounds, such as octocrylene, and benzotriazole compounds, such as drometrizole trisiloxane, and mixtures thereof.

[0202] In one embodiment of the present invention, the oil-soluble organic UV filter of the present invention comprises a combination of at least one oil-soluble organic UV-A filter and at least one oil-soluble organic UV-B filter.

[0203] Thus, in another embodiment of the present invention, the oil-soluble organic UV filter comprises at least one oil-soluble organic UV-A filter selected from aminobenzophenone compounds and dibenzoylmethane compounds, and at least one oil-soluble organic UV-B filter selected from triazine compounds, salicylic compounds, β,β-diphenylacrylate compounds, and benzotriazole compounds.

[0204] Alternatively, in one preferred embodiment of the present invention, the oil-soluble organic UV filter of the present invention comprises at least one oil-soluble organic UV-A and UV-B filter.

[0205] Thus, in another preferred embodiment of the present invention, the oil-soluble organic UV filter comprises at least one oil-soluble organic filter selected from benzophenone compounds, benzotriazole compounds, bis-resorcinyl triazine compounds, and benzoxazole compounds.

[0206] In yet another preferred embodiment of the present invention, the oil-soluble organic UV filter comprises at least one bis-resorcinyl triazine compounds, in particular bis-ethylhexyloxyphenol methoxyphenyl triazine.

[0207] The amount of the (c) oil-soluble organic UV filter(s) in the composition according to the present invention may be 0.5% by weight or more, preferably 1% by weight or more, and more preferably 2% by weight or more, relative to the total weight of the composition.

[0208] The amount of the (c) oil-soluble organic UV filter(s) in the composition according to the present invention may be 10% by weight or less, preferably 7.5% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition.

[0209] The amount of the (c) oil-soluble organic UV filter(s) in the composition according to the present invention may range from 0.5% to 10% by weight, preferably from 1% to 7.5% by weight, and more preferably from 2% to 5% by weight, relative to the total weight of the composition.

[0210] (Oil)

[0211] The composition according to the present invention comprises (d) at least one oil. If two or more (d) oils are used, they may be the same or different.

[0212] The (d) oil(s) can constitute the oily phase(a) in the composition according to the present invention. Here, “oil” can mean a fatty compound or substance which is in the form of a liquid, a paste (nonsolid), or solid at room temperature (25°C) under atmospheric pressure (760 mmHg). As the oils, those generally used in cosmetics can be used alone or in combination thereof. These oils may be volatile or non-volatile.

[0213] Preferably, the (d) oil is in the form of a liquid, or a paste (non-solid) at room temperature (25°C) under atmospheric pressure (760 mmHg).

[0214] The (d) oil may be a non-polar oil such as a hydrocarbon oil, a silicone oil, or the like; a polar oil such as a plant or animal oil and an ester oil or an ether oil; or a mixture thereof.

[0215] The (d) oil may be selected from the group consisting of oils of plant or animal origin, synthetic oils, silicone oils, hydrocarbon oils, and fatty alcohols.

[0216] As examples of plant oils, mention may be made of, for example, apricot oil, linseed oil, camellia oil, macadamia nut oil, com oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

[0217] As examples of animal oils, mention may be made of, for example, squalene and squalane.

[0218] As examples of synthetic oils, mention may be made of alkane oils such as isododecane and isohexadecane, ester oils, ether oils, and artificial triglycerides.

[0219] The ester oils are preferably liquid esters of saturated or unsaturated, linear or branched C1-C26aliphatic monoacids or polyacids and of saturated or unsaturated, linear or branched C1-C26aliphatic monoalcohols or polyalcohols, the total number of carbon atoms of the esters being greater than or equal to 10.

[0220] Preferably, for the esters of monoalcohols, at least one from among the alcohol and the acid from which the esters of the present invention are derived is branched.

[0221] Among the monoesters of monoacids and of monoalcohols, mention may be made of ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate and isostearyl neopentanoate.

[0222] Esters of C4-C22dicarboxylic or tricarboxylic acids and of C1-C22alcohols, and esters of monocarboxylic, dicarboxylic or tricarboxylic acids and of non-sugar C4-C26dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols may also be used.

[0223] Mention may especially 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; trioctyldodecyl citrate; trioleyl citrate; neopentyl glycol diheptanoate; diethylene glycol diisononanoate.

[0224] As ester oils, one can use sugar esters and diesters of C6-C30and preferably C12-C22fatty acids. It is recalled that the term “sugar” means oxygen-bearing hydrocarbon-based compounds containing several alcohol functions, with or without aldehyde or ketone functions, and which comprise at least 4 carbon atoms. These sugars may be monosaccharides, oligosaccharides or polysaccharides.

[0225] Examples of suitable sugars that may be mentioned include sucrose (or saccharose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose, and derivatives thereof, especially alkyl derivatives, such as methyl derivatives, for instance methylglucose.

[0226] The sugar esters of fatty acids may be chosen especially from the group comprising the esters or mixtures of esters of sugars described previously and of linear or branched, saturated or unsaturated C6-C30and preferably C12-C22fatty acids. If they are unsaturated, these compounds may have one to three conjugated or non-conjugated carbon-carbon double bonds.

[0227] The esters according to this variant may also be selected from monoesters, diesters, triesters, tetraesters and polyesters, and mixtures thereof.

[0228] These esters may be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates and arachidonates, or mixtures thereof such as, especially, oleopalmitate, oleostearate and palmitostearate mixed esters, as well as pentaerythrityl tetraethyl hexanoate.

[0229] More particularly, use is made of monoesters and diesters and especially sucrose, glucose or methylglucose monooleates or dioleates, stearates, behenates, oleopalmitates, linoleates, linolenates and oleostearates.

[0230] An example that may be mentioned is the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

[0231] As examples of preferable ester oils, mention may be made of, for example, diisopropyl adipate, dioctyl adipate, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, isodecyl neopentanoate, myristyl propionate, 2-ethylhexyl 2-ethylhexanoate, 2-ethylhexyl octanoate, 2-ethylhexyl caprylate / caprate, methyl palmitate, ethyl palmitate, isopropyl palmitate, dicaprylyl carbonate, isopropyl lauroyl sarcosinate, isononyl isononanoate, ethylhexyl palmitate, isohexyl laurate, hexyl laurate, isocetyl stearate, isopropyl isostearate, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), pentaerythrityl tetra(2-ethylhexanoate), 2-ethylhexyl succinate, diethyl sebacate, and mixtures thereof.

[0232] As examples of artificial triglycerides, mention may be made of, for example, capryl caprylyl glycerides, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, glyceryl tri(caprate / caprylate) and glyceryl tri(caprate / caprylate / linolenate).

[0233] As examples of silicone oils, mention may be made of, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, and the like; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like; and mixtures thereof.

[0234] Preferably, silicone oil is chosen from liquid polydialkylsiloxanes, especially liquid polydimethylsiloxanes (PDMS) and liquid polyorganosiloxanes comprising at least one aryl group.

[0235] These silicone oils may also be organomodified. The organomodified silicones that can be used according to the present invention are silicone oils as defined above and comprise in their structure one or more organofunctional groups attached via a hydrocarbon-based group.

[0236] Organopolysiloxanes are defined in greater detail in Walter Noll’s Chemistry and Technology of Silicones (1968), Academic Press. They may be volatile or non-volatile.

[0237] When they are volatile, the silicones are more particularly chosen from those having a boiling point of between 60°C and 260°C, and even more particularly from:

[0238] (i) Cyclic polydialkylsiloxanes comprising from 3 to 7 and preferably 4 to 5 silicon atoms. These are, for example, octamethylcyclotetrasiloxane sold in particular 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 mixtures thereof. Mention may also be made of cyclocopolymers of the type such as dimethylsiloxane / methylalkylsiloxane, such as Silicone Volatile® FZ 3109 sold by the company Union Carbide, of formula: with

[0239] Mention may also be made of mixtures of cyclic polydialkylsiloxanes with organosilicon compounds, 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

[0240] (ii) Linear volatile polydialkylsiloxanes containing 2 to 9 silicon atoms and having a viscosity of less than or equal to 5* IO"6m2 / s at 25°C. An example is decamethyltetrasiloxane sold in particular 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 the silicones is measured at 25°C according to ASTM standard 445 Appendix C.

[0241] Non-volatile polydialkylsiloxanes may also be used. These non-volatile silicones are more particularly chosen from polydialkylsiloxanes, among which mention may be made mainly of polydimethylsiloxanes containing trimethylsilyl end groups. Preferably, the polydialkylsiloxane is chosen from liquid polydialkylsiloxanes, especially liquid polydimethylsiloxanes (PDMS, dimethicone).

[0242] Among these polydialkylsiloxanes, mention may be made, in a non-limiting manner, of the following commercial products: the Silbione® oils of the 47 and 70 047 series or the Mirasil® oils sold by Rhodia, for instance the oil 70 047 V 500 000; the oils of the Mirasil® series sold by the company Rhodia; the oils of the 200 series from the company Dow Coming, such as DC200 with a viscosity of 60,000 mm2 / s; and the Viscasil® oils from General Electric and certain oils of the SF series (SF 96, SF 18) from General Electric. Mention may also be made of polydimethylsiloxanes containing dimethylsilanol end groups known under the name dimethiconol (CTFA), such as the oils of the 48 series from the company Rhodia.

[0243] Among the silicones containing aryl groups, mention may be made of polydiarylsiloxanes, especially polydiphenylsiloxanes and polyalkylarylsiloxanes such as phenyl silicone oil.

[0244] The phenyl silicone oil may be chosen from the phenyl silicones of the following formula: in which

[0245] R1to R10, independently of each other, are saturated or unsaturated, linear, cyclic or branched C1- C30hydrocarbon-based radicals, preferably C1-C12hydrocarbon-based radicals, and more preferably C1-C6hydrocarbon-based radicals, in particular methyl, ethyl, propyl or butyl radicals, and m, n, p and q are, independently of each other, integers 0 to 900 inclusive, preferably 0 to 500 inclusive, and more preferably 0 to 100 inclusive, with the proviso that the sum n+m+q is not 0.

[0246] Examples that may be mentioned include the products sold under the following names : the Silbione® oils of the 70 641 series from Rhodia; the oils of the Rhodorsil® 70 633 and 763 series from Rhodia; the oil Dow Coming 556 Cosmetic Grade Fluid from Dow Coming; the silicones of the PK series from Bayer, such as the product PK20; certain oils ofthe SF series from General Electric, such as SF 1023, SF 1154, SF 1250 and SF 1265.

[0247] As the phenyl silicone oil, phenyl trimethicone (R1to R10are methyl; p, q, and n 0; m=l in the above formula) is preferable.

[0248] The organomodified liquid silicones may especially contain polyethyleneoxy and / or polypropyleneoxy groups. Mention may thus be made ofthe silicone KF-6017 proposed by Shin- Etsu, and the oils Silwet® L722 and L77 from the company Union Carbide.

[0249] Hydrocarbon oils may be chosen from: linear or branched, optionally cyclic, C6-C16lower alkanes. Examples that may be mentioned include hexane, undecane, dodecane, tridecane, and isoparaffins, for instance isohexadecane, isododecane and isodecane; and linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffins, liquid petroleum jelly, poly decenes and hydrogenated polyisobutenes such as Parleam and squalane. As preferable examples of hydrocarbon oils, mention may be made of, for example, linear or branched hydrocarbons such as isohexadecane, isododecane, squalane, mineral oil (e.g., liquid paraffin), paraffin, vaseline or petrolatum, naphthalenes, and the like; hydrogenated polyisobutene, isoeicosan, and decene / butene copolymer; and mixtures thereof.

[0250] The term “fatty” in the fatty alcohol means the inclusion of a relatively large number of carbon atoms. Thus, alcohols which have 4 or more, preferably 6 or more, and more preferably 12 or more carbon atoms are encompassed within the scope of fatty alcohols. The fatty alcohol may be saturated or unsaturated. The fatty alcohol may be linear or branched.

[0251] The fatty alcohol may have the structure R-OH wherein R is chosen from saturated and unsaturated, linear and branched radicals containing from 4 to 40 carbon atoms, preferably from 6 to 30 carbon atoms, and more preferably from 12 to 20 carbon atoms. In at least one embodiment, R may be chosen from C12-C20alkyl and C12-C20alkenyl groups. R may or may not be substituted with at least one hydroxyl group.

[0252] As examples of the 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, palmitoleyl alcohol, arachidonyl alcohol, erucyl alcohol, and mixtures thereof.

[0253] It is preferable that the fatty alcohol be a saturated fatty alcohol.

[0254] Thus, the fatty alcohol may be selected from straight or branched, saturated or unsaturated C6-C30alcohols, preferably straight or branched, saturated C6- C30alcohols, and more preferably straight or branched, saturated C12-C20alcohols.

[0255] The term “saturated fatty alcohol” here means an alcohol having a long aliphatic saturated carbon chain. It is preferable that the saturated fatty alcohol be selected from any linear or branched, saturated C6- C30fatty alcohols. Among the linear or branched, saturated C6-C30fatty alcohols, linear or branched, saturated C12-C20fatty alcohols may preferably be used. Any linear or branched, saturated C16-C20fatty alcohols may be more preferably used. Branched C16-C20fatty alcohols may be even more preferably used.

[0256] 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.

[0257] 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.

[0258] It may be preferable that the (d) oil be selected from ester oils.

[0259] In one preferred embodiment, the (d) oil is selected from ester oils of monoesters of monoacids and of monoalcohols, such as ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2- ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate, isostearyl neopentanoate, and combinations thereof. The composition according to the present invention comprises the (d) oils in relatively low amount. Specifically, the amount of the (d) oil(s) in the composition according to the present invention is 15% by weight or less relative to the total weight of the composition. Preferably, the amount of the (d) oil(s) in the composition is 12.5% by weight or less, preferably 10% by weight or less, relative to the total weight of the composition.

[0260] The amount of the (d) oil(s) in the composition according to the present invention may be 0.5% by weight or more, preferably 1% by weight or more, and more preferably 3% by weight or more, relative to the total weight of the composition.

[0261] The amount of the (d) oil(s) in the composition according to the present invention may range from 0.5% to 15% by weight, preferably from 1% to 12.5% by weight, and more preferably from 3% to 10% by weight, relative to the total weight of the composition.

[0262] (Other ingredients)

[0263] • Polyol

[0264] The composition according to the present invention may comprise at least one polyol as an optional ingredient. Two or more different types of polyols may be used in combination. Thus, a single type of polyol or a combination of different types of polyols may be used.

[0265] Within the meaning of the present invention, the term “polyol” should be understood as meaning any organic molecule comprising at least two free hydroxyl groups. The term “polyol” does not generally encompass a saccharide or a derivative thereof. The derivative of a saccharide includes a sugar alcohol which is obtained by reducing one or more carbonyl groups of a saccharide, as well as a saccharide or a sugar alcohol in which the hydrogen atom or atoms in one or more hydroxy groups thereof has or have been replaced with at least one substituent such as an alkyl group, a hydroxyalkyl group, an alkoxy group, an acyl group or a carbonyl group.

[0266] Preferably, a polyol in accordance with the present invention is present in liquid form at ambient temperature.

[0267] A polyol suitable for the invention can be a compound of saturated or unsaturated and linear, branched or cyclic alkyl type carrying, on the alkyl chain, at least two -OH functional groups, in particular at least three -OH functional groups and more particularly at least four -OH functional groups.

[0268] The polyols which are advantageously suitable for the formulation of a composition according to the present invention are those exhibiting in particular from 2 to 32 carbon atoms, preferably from 3 to 16 carbon atoms.

[0269] The polyol may be a C2-C12polyol, preferably a C2-C9polyol, comprising at least 2 hydroxy groups, and preferably 2 to 5 hydroxy groups.

[0270] Advantageously, the polyol can, for example, be chosen from ethylene glycol, pentaerythritol, trimethylolpropane, butylene glycol, isoprene glycol, pentylene glycol, hexylene glycol, glycerol, polyglycerols, such as glycerol oligomers, for example diglycerol oligomers, polyethylene glycols and their mixtures. The polyol may be chosen from linear or branched, preferably linear polyols having from 2 to 5 carbon atoms; mention may be made especially of:

[0271] - diols such as hexylene glycol, propylene glycol, pentylene glycol, isoprene glycol, caprylyl glycol, diethylene glycol, and butylene glycol; and

[0272] - triols, such as glycerol (glycerin), and mixtures thereof.

[0273] According to a preferred embodiment of the invention, said polyol is chosen from butylene glycol, pentylene glycol, isoprene glycol, glycerol, polyglycerols, polyethylene glycols and their mixtures.

[0274] According to a more preferred embodiment, said polyol is chosen from butylene glycol, pentylene glycol, isoprene glycol, and their mixtures.

[0275] According to a specific mode, the composition of the invention can comprise at least propylene glycol.

[0276] According to another specific mode, the composition of the invention can comprise at least butylene glycol.

[0277] The amount of the polyol(s) in the composition according to the present invention may be 0.1% by weight or more, preferably 0.2% by weight or more, and more preferably 0.3% by weight or more, relative to the total weight of the composition.

[0278] The amount of the polyol(s) in the composition according to the present invention may be 20% by weight or less, preferably 15% by weight or less, and more preferably 12% by weight or less, relative to the total weight of the composition.

[0279] The amount of the polyol(s) in the composition according to the present invention may range from 0.1% to 20% by weight, preferably from 0.2% to 15% by weight, and more preferably from 0.3% to 12% by weight, relative to the total weight of the composition.

[0280] • Surfactant

[0281] The composition according to the present invention may comprise at least one surfactant as an optional ingredient. The surfactant may be chosen from amphoteric, anionic, cationic, or nonionic surfactants, used alone or as a mixture.

[0282] Preferably, the surfactant is chosen from nonionic surfactants. Thus, the composition according to the present invention may comprise at least one nonionic surfactant.

[0283] Examples of nonionic surfactants usable in the compositions of the invention may include polyethoxylated fatty alcohols or polyglycerolated fatty alcohols, such as the adducts of ethylene oxide with lauryl alcohol, especially those containing from 9 to 50 oxy ethylene units (Laureth-9 to Laureth-50 as the INCI names), in particular Laureth-9; esters of polyols and of a fatty acid possessing a saturated or unsaturated chain comprising, for example, from 8 to 24 carbon atoms, and their oxyalky lenated derivatives, that is to say comprising oxyethylene and / or oxypropylene units, such as esters of glycerol and of a C8-C24fatty acid, and their oxyalkylenated derivatives, in particular polyoxyethylenated glyceryl stearate (mono-, di- and / or tristearate), for example PEG-20 glyceryl triisostearate; esters of sugar and of a C8-C24fatty acid and their oxyalkylenated derivatives, such as polyethoxylated sorbitol esters of C8-C24fatty acids, in particular Polysorbate 80, such as the product marketed under the name “TWEEN 80” by Croda; ethers of a sugar and of C8-C24fatty alcohols, such as caprylyl / capryl glucoside; polyoxyethylene alkyl ethers; polyoxyethylene oxypropylene alkyl ethers; fatty acid alkanol amides; alkyl amine oxides; alkyl polyglycosides and silicone surfactants, such as polydimethylsiloxane containing oxyethylene groups and / or oxypropylene groups, for example, PEG-10 dimethicone, bis-PEG / PPG-14 / 14 dimethicone, bis- PEG / PPG-20 / 20 dimethicone, and PEG / PPG-20 / 6 dimethicone, and alkyl dimethicone copolyols, notably those having an alkyl radical with 10 to 22 carbon atoms and having 2 to 50 oxy ethylene groups and 2 to 50 oxypropylene groups, such as cetyl dimethicone copolyol (INCI name: Cetyl PEG / PPG-10 / 1 Dimethicone), and lauryl dimethicone copolyol (INCI name: Lauryl PEG / PPG- 18 / 18 Methicone); and polyglyceryl fatty acid ester such as polyglyceryl-4 caprate, polyglyceryl-6 dicaprate, polyglyceryl-6 dicaprate, polyglyceryl-6 dioleate, polyglyceryl-6 caprylate, polyglyceryl- 2 oleate, and polyglyceryl-6 polyricinoleate; and mixtures thereof.

[0284] In addition, mention can be made of alkylpolyglycosides as nonionic surfactants, represented by the following general formula (1):

[0285] R-O-(G)X(1) in which R represents a branched and / or unsaturated alkyl radical comprising from 14 to 24 carbon atoms, G represents a reduced sugar comprising 5 or 6 carbon atoms and x denotes a value ranging from 1 to 10 and preferably from 1 to 4, and G in particular denotes glucose, fructose or galactose. Mention may be made, as alkyl polyglycosides of this type, of alkyl polyglucosides (G = glucose in the formula (I)) and in particular the compounds of formula (I) in which R more particularly represents an oleyl radical (unsaturated C18radical) or isostearyl (saturated C18radical), G denotes glucose and x is a value ranging from 1 to 2, in particular isostearyl glucoside, oleyl glucoside and their mixtures. This alkyl polyglucoside can be used as a mixture with a coemulsifier, more especially with a fatty alcohol and in particular a fatty alcohol having the same fatty chain as that of the alkyl poly glucoside, that is to say comprising from 14 to 24 carbon atoms and having a branched and / or unsaturated chain, for example isostearyl alcohol when the alkyl polyglucoside is isostearyl glucoside and oleyl alcohol when the alkyl polyglucoside is oleyl glucoside. Use may be made, for example, of the mixture of isostearyl glucoside and isostearyl alcohol, sold under the name Montanov WO 18 by Seppic, and also the mixture of octyldodecanol and octyldodecyl xyloside sold under the name Fludanov 20X by Seppic.

[0286] When the composition according to the present invention comprises the surfactant(s), the amount of the surfactant(s) can be more than 0% by weight relative to the total weight of the composition.

[0287] The amount of the surfactant(s) in the composition according to the present invention may be 1% by weight or less, preferably 0.5% by weight or less, and more preferably 0.1% by weight or less, relative to the total weight of the composition. In one embodiment of the present invention, the composition is free of any surfactants.

[0288] • Water

[0289] The composition according to the present invention may comprise water.

[0290] The water can form the aqueous phase(s) in the composition of the present invention.

[0291] The amount of water in the composition may be from 40% by weight or more, preferably 50% by weight or more, more preferably 60% by weight or more, relative to the total weight of the composition. The amount of water in the composition may be 95% by weight or less, preferably 90% by weight or less, and more preferably 85% by weight or less, relative to the total weight of the composition.

[0292] The amount of water in the composition may range from 40% to 95% by weight, preferably from 50% to 90% by weight, and more preferably from 60% to 85% by weight, relative to the total weight of the composition.

[0293] • Acidifying agents

[0294] The composition according to the present invention may comprise at least one acidifying agent as an optional ingredient. The acidifying agent may be chosen from amphoteric, anionic, cationic, or nonionic surfactants, used alone or as a mixture.

[0295] Among the acidifying agents, mention may be made, by way of example, of mineral or organic acids. Preferably, the acidifying agent is selected from organic acids.

[0296] As mineral acids, mention can be made of hydrochloric acid, ortho-phosphoric acid, and sulfuric acid.

[0297] As organic acids, mention can be made of carboxylic acids, such as acetic acid, tartaric acid, citric acid, lactic acid, and sulfonic acids.

[0298] The amount of the acidifying agent(s) in the composition according to the present invention may be 0.1% by weight or more, preferably 0.25% by weight or more, and more preferably 0.5% by weight or more, relative to the total weight of the composition.

[0299] The amount of the acidifying agent(s) in the composition according to the present invention may be 5% by weight or less, preferably 3% by weight or less, and more preferably 2% by weight or less, relative to the total weight of the composition.

[0300] The amount of the acidifying agent(s) in the composition according to the present invention may range from 0.1% to 5% by weight, preferably from 0.25% to 3% by weight, and more preferably from 0.5% to 2% by weight, relative to the total weight of the composition.

[0301] - Adjuvants

[0302] The compositions according to the present invention may also contain various adjuvants conventionally used in compositions for sun care products, which may be selected from a physiologically and / or cosmetically acceptable organic solvent, anionic, non-ionic, amphoteric or zwitterionic polymers or mixtures thereof, antioxidants, neutralizing agents, alkaline agents, sequestering agents, buffers, fragrances, emollients, dispersing agents, dyes and / or pigments, filmforming agents, thickeners, ceramides, preservatives, co-preservatives and opacifying agents.

[0303] The adjuvants may be present in the composition of the present invention in an amount preferably ranging from 0.01% to 30% by weight, more preferably from 0.1% to 20% by weight, and even more preferably from 0.5% to 10% by weight, relative to the total weight of the composition.

[0304] The composition according to the present invention may be intended for use as a cosmetic topical composition. Thus, the composition according to the present invention may be intended for application onto a keratin material. Keratin material here means a material containing keratin as a main constituent element, and examples thereof include the skin, scalp, nails, lips, hair, and the like. In particular, the composition according to the present invention may be a skin sun care cosmetic composition for protecting skin from UV rays.

[0305] According to a preferred embodiment, the composition according to the invention comprises relative to the total weight of the composition:

[0306] (a) from 0.1% to 10% by weight of the (a) at least one cationic polymer selected from polyamines;

[0307] (b) from 1% to 15% by weight of the (b) at least one fatty acid selected from C8-C24, preferably C12-C22saturated or unsaturated, linear or branched fatty acids;

[0308] (c) from 0.5% to 10% of the (c) at least one oil-soluble organic UV filter selected from oilsoluble organic UV-A and UV-B filters, such as benzophenone compounds, benzotriazole compounds, bis-resorcinyl triazine compounds, and benzoxazole compounds; and

[0309] (d) from 0.5% to 15% by weight of the (d) at least one oil selected from ester oils.

[0310] According to a preferred embodiment, the composition according to the invention comprises relative to the total weight of the composition:

[0311] (a) from 1% to 5% by weight of the (a) at least one cationic polymer selected from chitosan, polylysine, and a mixture thereof, in particular chitosan;

[0312] (b) from 3% to 7.5% by weight of the (b) at least one fatty acid chosen from C14-C22saturated branched fatty acids and C14-C22linear mono-unsaturated fatty acids, such as isopalmitic acid (C16), isostearic acid (C18), myristoleic acid (C14), palmitoleic acid (C16), and oleic acid (C18), and mixtures thereof;

[0313] (c) from 2% to 5% of the (c) at least one oil-soluble organic UV filter selected from bisresorcinyl triazine compounds, in particular bis-ethylhexyloxyphenol methoxyphenyl triazine; and

[0314] (d) from 3% to 10% by weight of the (d) at least one oil selected from ester oils of monoesters of monoacids and of monoalcohols, such as ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate, isostearyl neopentanoate, and combinations thereof.

[0315] [Preparation]

[0316] The composition according to the present invention can be prepared by mixing ingredients (a) to (d), as essential ingredients, as well as optional ingredient(s), as explained above.

[0317] The method and means to mix the above essential and optional ingredients are not limited. Any conventional method and means can be used to mix the above essential and optional ingredients to prepare the composition according to the present invention.

[0318] The composition according to the present invention can be prepared by simple or easy mixing with a conventional mixing means such as a stirrer and a homogenizer. Also, heating may not be necessary. Therefore, the process for preparing the composition according to the present invention may be environmentally friendly.

[0319] [Cosmetic Process]

[0320] The present invention also relates to: a cosmetic process for a keratin material, such as skin, comprising applying to the keratin material the composition according to the present invention.

[0321] The composition according to the present invention may preferably be used as a cosmetic composition. The cosmetic composition may be a sun care composition for protecting keratin materials, such as skin, from UV rays.

[0322] The cosmetic process here means a non-therapeutic cosmetic method for caring for and / or making up the surface of a keratin material such as skin.

[0323] Therefore, the present invention relates to a cosmetic process for protecting keratin materials from UV radiation, comprising, at least one step of applying the composition according to the present invention to the keratin material, such as skin.

[0324] EXAMPLES

[0325] The present invention will be described in more detail by way of examples which however should not be construed as limiting the scope of the present invention.

[0326] [Compositions]

[0327] Each of the O / W emulsion compositions according to Examples 1 to 9 (Ex. 1 to Ex. 9) and Comparative Examples 1 and 2 (Comp. Ex. 1 , Comp. Ex. 2) was prepared by mixing the ingredients listed in the following Tables 1 and 2. The numerical values for the amounts of the ingredients are all based on “% by weight” as active raw materials.

[0328] [Evaluation]

[0329] (Emulsion Formation)

[0330] The emulsion formation of each of the obtained emulsion compositions was visually observed with an optical microscope after they were manufactured, and evaluated under the following criteria.

[0331] Very Good: stable emulsion was obtained and oil droplets were very fine Good: stable emulsion was obtained and oil droplets were fine Fair: between stable and unstable

[0332] Bad: unstable emulsion was obtained and oil droplets were not fine

[0333] (Crystallization)

[0334] The each of the obtained emulsion compositions in a beaker was kept at 4°C for 7 days after they were manufactured. The appearance of each sample was then observed with an optical microscope, and the result of crystallization was evaluated under the following criteria.

[0335] Good: crystals were not observed Bad: crystals were observed

[0336] The results are shown in Tables 1 and 2 below. Table 1

[0337] Table 2

[0338] As can be seen from the evaluation results in Tables 1 and 2, the emulsion compositions according to Examples 1 to 9, which include the combination of the (a) cationic polymer, the (b) fatty acid, the (c) oil-soluble organic UV filter, and the (d) oil provided a good formation of the emulsion, and could inhibit crystallization of the (c) oil-soluble organic UV filter.

[0339] On the other hand, filler aggregation was observed in the compositions according to Comparative Examples 1 to 3, which do not include the (a) cationic polymer of the present invention. Therefore, it can be concluded that the emulsion compositions according to the present invention is very preferable as a sun care cosmetic composition.

Claims

CLAIMS1. An emulsion composition comprising:(a) at least one cationic polymer;(b) at least one fatty acid;(c) at least one oil-soluble organic UV filter; and(d) at least one oil in an amount of 15% by weight or less relative to the total weight of the composition.

2. The composition according to Claim 1, wherein the (a) cationic polymer is selected from polyamines.

3. The composition according to Claim 1 or 2, wherein the (a) cationic polymer is selected from chitosan, polylysine, and a mixture thereof, and preferably is chitosan.

4. The composition according to any one of Claims 1 to 3, wherein the (b) fatty acid is selected from C8-C24, preferably C12-C22saturated or unsaturated, linear or branched fatty acids.

5. The composition according to any one of Claims 1 to 4, wherein the (b) fatty acid is selected from C14-C22saturated branched fatty acids and C14-C22linear mono-unsaturated fatty acids, such as isopalmitic acid (C16), isostearic acid (C18), myristoleic acid (C14), palmitoleic acid (C16), and oleic acid (C18), and mixtures thereof.

6. The composition according to any one of Claims 1 to 5, wherein the (c) oil-soluble organic UV filter is solid oil-soluble organic UV filter.

7. The composition according to any one of Claims 1 to 6, wherein the (c) oil-soluble organic UV filter is selected from oil-soluble organic UV filter selected from oil-soluble organic UV-A and UV-B filters, such as benzophenone compounds, benzotriazole compounds, bis-resorcinyl triazine compounds, and benzoxazole compounds.

8. The composition according to any one of Claims 1 to 7, wherein the (d) oil is selected from ester oils, preferably ester oils of monoesters of monoacids and of monoalcohols, such as ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2- ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate, isostearyl neopentanoate, and combinations thereof.

9. The composition according to any one of Claims 1 to 8, wherein the (a) cationic polymer is present in an amount ranging from 0.1% to 10% by weight, preferably from 0.5% to 7.5% by weight, and more preferably from 1% to 5% by weight, relative to the total weight of the composition.

10. The composition according to any one of Claims 1 to 9, wherein the (b) fatty acid is present in an amount ranging from 1% to 15% by weight, preferably from 2% to 10% by weight, and more preferably from 3% to 7.5% by weight, relative to the total weight of the composition.

11. The composition according to any one of Claims 1 to 10, wherein the (c) oil-solubleorganic UV filter is present in an amount ranging from 0.5% to 10% by weight, preferably from 1% to 7.5% by weight, and more preferably from 2% to 5% by weight, relative to the total weight of the composition.

12. The composition according to any one of Claims 1 to 11, wherein the (d) oil is present in an amount ranging from 0.5% to 15% by weight, preferably from 1% to 12.5% by weight, and more preferably from 3% to 10% by weight, relative to the total weight of the composition.

13. The composition according to any one of Claims 1 to 11, further comprising at least one polyol.

14. The composition according to any one of Claims 1 to 14, comprising surfactant(s) in an amount of 1% by weight or less, preferably 0.5% by weight or less, and more preferably 0.1% by weight or less, relative to the total weight of the composition, or being free of any surfactants.

15. A cosmetic process for a keratin material, such as skin, comprising applying to the keratin material the composition according to any one of Claims 1 to 14.

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