Improved water resistance of cosmetic compositions containing ensulsol

Abstract

The present invention relates to a cosmetic composition comprising an UV filter ensulizole, an ester of a fatty acid and dextrin, and a mixture of branched and linear saturated C15-C19, the mixture mainly comprising branched saturated C15-C19. The cosmetic composition exhibits water resistance with an improved UV protection factor.

Description

Detailed Description of the Invention

[0001] [Technical field] The present invention relates to the field of cosmetic compositions that protect against UV light, in particular cosmetic compositions that preferably contain UV filters such as those marketed as PARSOL® HS by DSM Nutritional Products Ltd.

[0002] [Background of the invention] There has been a long-standing trend away from elegant paleness towards a "healthy, sporty brown skin". To achieve this, people expose their skin to the sun's rays, which cause pigmentation in the sense of melanogenesis. However, the ultraviolet radiation of sunlight also has a damaging effect on the skin. In addition to acute damage (sunburn), overexposure of the skin to light in the UV(B) range (wavelength: 280-315 nm) can also cause long-term damage, such as an increased risk of skin cancer. Overexposure to UV(B) and UV(A) radiation (wavelength: 315-400 nm) also reduces the strength of the elastin and collagen fibers of the connective tissue. This causes many phototoxic and photoallergic reactions, which result in premature aging of the skin.

[0003] Therefore, a range of photoprotective screening substances have been developed that can be used in cosmetic formulations to protect the skin.

[0004] The ability of a cosmetic composition to protect the skin from UV radiation is typically expressed in terms of the Sun Protection Factor (SPF).

[0005] Enthrizole is a very important UV(B) filter, but has only limited ability to protect against UV(A) light.

[0006] Enthrizole becomes very soluble in water when neutralized to a pH above 7. Typical neutralizing agents are NaOH or amines such as triethanolamine or tromethamine.

[0007] When UV protection cosmetic composition is exposed to water, as occurs during bathing, UV filters are usually removed from skin to a great extent, thereby reducing the ability to protect against UV light.This can be expressed as a significant reduction in the SPF of composition.In particular, it has been found that ensulizole is prone to be removed in this way by exposure to water.

[0008] FR 3073407 A1 discloses a photoprotective composition comprising a specific acrylate polymer, an ester of dextrin and a UV filter. In examples 1 and 4, the composition comprises the UV filters phenylbenzimidazole sulfonic acid and isohexadecane, among other UV filters. The SPF of the compositions is measured and compared immediately after preparation. However, FR 3073407 A1 does not disclose mixtures of branched and linear saturated C15-C19 alkanes, nor does it concern the water resistance of the photoprotective composition.

[0009] However, the water resistance of sun protection products is an important requirement for today's sunscreens and can be improved, for example, by adding film-forming polymers, but such film-forming polymers are either insufficiently effective, as outlined, for example, in DE 102010063825 A1, and / or the resulting organoleptic properties make the products less attractive for the end consumer, since such products often have an oily, heavy and sticky feel on the skin.

[0010] [Summary of the invention] Therefore, the problem to be solved is to obtain an ultraviolet protective cosmetic composition containing the UV filter ensulsol and having significantly improved water resistance.

[0011] Surprisingly, it has been found that the cosmetic composition according to claim 1 is able to solve this problem.

[0012] It has been shown that the water resistance of UV-protective cosmetic compositions containing ensulizole can be significantly improved by adding a specific mixture of branched and linear saturated C15-C19 alkanes and esters of fatty acids with dextrin. This solution has been found to be a very sustainable and advantageous approach to this problem, in particular, since the preferred mixture of C15-C19 alkanes can be obtained from biological sources. It is therefore possible to provide cosmetic compositions with a high sun protection factor (SPF) and significantly improved water resistance.

[0013] It has been found that when the UV filter Enthrisol is combined with other UV filters, the water resistance is improved even more significantly.

[0014] In particular, it has been found that a particular mixture of linear and branched saturated C15-C19 alkanes is important for enhancing the water resistance of cosmetic compositions.

[0015] Furthermore, it was found that by adding a specific mixture of branched and linear saturated C15-C19 alkanes and an ester of a fatty acid and dextrin, a cosmetic composition containing ensulsol with reduced sand adhesion can be obtained.

[0016] Further aspects of the invention are the subject matter of further independent claims. Particularly preferred embodiments are the subject matter of the dependent claims.

[0017] [Detailed Description of the Invention] In a first aspect, the present invention provides a cosmetic composition comprising: - Formula (I) [ka] UV filters or their salts; - a mixture of branched and linear saturated C15-C19 alkanes; - Ester of fatty acid and dextrin wherein the amount of branched saturated C15-C19 alkane in the mixture of branched and linear saturated C15-C19 alkanes is greater than 80% by weight, preferably greater than 90% by weight, and most preferably greater than 92% by weight.

[0018] In this specification, "C x~y An "alkyl" group is an alkyl group containing x to y carbon atoms, i.e., for example, C 1~3 An alkyl group is an alkyl group containing 1 to 3 carbon atoms. An alkyl group can be straight or branched. For example, -CH(CH3)-CH2-CH3 is considered a C4 alkyl group.

[0019] Similarly, "C x~y An "alkylene" group is an alkylene group containing x to y carbon atoms, i.e., for example, C 1~3 An alkylene group is an alkylene group containing 1 to 3 carbon atoms. An alkylene group can be straight or branched. For example, -CH2-CH2-CH2- and -CH(CH3)-CH2- and -C(CH2-CH3)- and -C(CH3)2- are all considered to be C3 alkylene groups.

[0020] In this specification, when the same designation for a symbol or group occurs in several formulas, the definition of said group or symbol given in relation to one particular formula also applies to other formulas containing the same said designation.

[0021] The term "UV filter" in this specification refers to a substance that absorbs ultraviolet light (=UV light), i.e. electromagnetic radiation with a wavelength of 280-400 nm. A UV(A) filter is a UV filter that absorbs UV(A) light, i.e. electromagnetic radiation with a wavelength of 315-400 nm. A UV(B) filter is a UV filter that absorbs UV(B) light, i.e. electromagnetic radiation with a wavelength of 280-315 nm.

[0022] Liquid organic UV filters are liquid at ambient temperature (ie 25° C.).

[0023] Solid organic UV filters are solid at ambient temperature (ie 25° C.).

[0024] By "mixture of branched and linear saturated C15-C19 alkanes" in this specification is meant that the mixture comprises different alkanes, each of which contains only 15, 16, 17, 18 or 19 carbon atoms, and does not contain any alkanes below that number of carbon atoms. Thus, this type of mixture does not contain, for example, dodecane or isododecane. The mixture comprises both branched and linear C15-C19 alkanes.

[0025] [UV filter of formula (I)] The present cosmetic composition comprises a composition represented by formula (I) [ka] Contains a UV filter.

[0026] The UV filter of formula (I) (CAS: [27503-81-7]) is a solid with a melting point of 1>300° C. It is also known as phenylbenzimidazole sulfonic acid (INCI name) and ensulizole.

[0027] Enthrizole is a strong UV(B) light filter that specifically absorbs light in the 280-340 nm region with an absorption maximum at 302 nm.

[0028] Enthrizole is a UV filter that is widely used in sun protection products. Enthrizole is water-soluble and is therefore often used in products that are formulated to be light and less oily. Due to its poor absorption properties for UV(A) light, it is usually used in combination with other UV filters, especially UV(A) filters, especially avobenzone.

[0029] Enthrisol is commercialized under the trademark EUSOLEX® 232 by Merck KGaA and, inter alia, under the trademark Parsol® HS by DSM Nutritional Products Ltd.

[0030] [Ester of fatty acid and dextrin] The present cosmetic composition further comprises an ester of a fatty acid and a dextrin.

[0031] Dextrin is an oligomer of D-glucose. Its structure can be represented by the simplified structure shown below. [ka]

[0032] Dextrins have various average degrees of sugar chain polymerization, and therefore various molecular weights.

[0033] In the present invention, the dextrin of the ester of a fatty acid and a dextrin preferably has an average degree of polymerization of the sugar chain of 3-20, particularly 8-16.

[0034] The fatty acid of the ester of fatty acid and dextrin is preferably a C14 to C18 fatty acid, particularly a straight-chain C14 to C18 fatty acid, most preferably palmitic acid.

[0035] A particularly suitable ester of fatty acid and dextrin is dextrin palmitate, commercially available as Rheopearl® KL2 from Chiba Flour Milling.

[0036] Dextrin has several hydroxyl groups which can be esterified.

[0037] Preferably, said esters of fatty acids with dextrin have an average number of esterified hydroxyl groups per glucose unit of more than 2.5, preferably between 2.7 and 3.5, more preferably between 28 and 3.4, most preferably between 2.8 and 3.2.

[0038] In one embodiment, said ester of fatty acid with dextrin has an average number of esterified hydroxyl groups per glucose unit greater than 3, preferably between 3.05 and 3.5, more preferably between 3.1 and 3.4, most preferably between 3.1 and 3.2.

[0039] In other words, preferably essentially all of the hydroxyl groups of the dextrin are esterified.

[0040] More preferably, the ester of fatty acid and dextrin has a molecular weight M of 8,000 to 16,000 Da, preferably 9,000 to 13,000 Da, more preferably 10,000 to 11,500 Da. n has.

[0041] The molecular weight Mn is determined in Daltons (Da) by SEC / GPC, in particular using polystyrene as standard.

[0042] Both fatty acids and dextrins are of biological origin. It is highly advantageous for chemicals to be of biological origin, as such materials or their products are more sustainable. Sustainable products or compositions are in high demand in the market.

[0043] [Mixture of branched and linear saturated C15-C19 alkanes] The present cosmetic composition comprises a mixture of branched and linear saturated C15-C19 alkanes.

[0044] Particularly suitable mixtures of C15 to C19 alkanes are in particular those disclosed in WO 2016 / 185046, WO 2017 / 046177, WO 2018 / 109353 A1 and WO 2018 / 109354 A1 and WO 2018 / 172228 A1.

[0045] Preferably, the mixture of branched and linear saturated C15-C19 alkanes has a content of bio-derived carbon of 90% or more based on the total weight of the mixture of branched and linear saturated C15-C19 alkanes. It is highly advantageous for chemicals to be derived from living organisms, as this increases the sustainability of such substances. Highly sustainable products or compositions are in high demand in the market.

[0046] The determination of the biogenic content or biogenic carbon content is carried out in accordance with ASTM Standards D 6866-12, Method B (ASTM D 6866-06) and ASTM D 7026 (ASTM D 7 026-04). ASTM Standard D 6866 is concerned with "Determination of Biomass Origin Within Natural Ranges Using Radiocarbon and Isotope Ratio Mass Spectroscopy", while ASTM Standard D 7 026 is concerned with "Sampling and Reporting of Results for Determining the Biomass Origin of Materials by Carbon Isotope Analysis". The second listed standard refers to the first listed standard in the first paragraph. The first standard is concerned with the determination of the biomass origin of the sample. 14 C / 12 The paper describes a test to measure the C ratio of a sample derived from 100% renewable materials. 14 C / 12 By comparing with the C ratio, the relative proportion of C from renewable materials in the sample is given. 14 It is based on the same concept as C dating.

[0047] More preferably, the composition contains no or very little aromatic hydrocarbons (less than 100 ppm, in particular less than 30 ppm) relative to the total weight of the mixture of branched and linear saturated C15 to C19 alkanes.

[0048] The mixture of branched and linear saturated C15-C19 alkanes is produced by catalytic hydrogenation of a hydrocarbon biomass feedstock, in particular as detailed in WO 2016 / 185046, in particular as disclosed as Example 3 of WO 2016 / 185046.

[0049] Preferably, the amount of linear saturated C15-C19 alkanes in said mixture of branched and linear saturated C15-C19 alkanes is less than 10% by weight, preferably less than 8% by weight, most preferably greater than 5% by weight.

[0050] More preferably, the amount of C15 is less than 3% by weight, in particular less than 1% by weight, preferably less than 0.05% by weight, relative to the weight of said mixture of branched and linear saturated C15 to C19 alkanes.

[0051] Preferably, the mixture of branched and straight-chain saturated C15-C19 alkanes is a mixture of branched and straight-chain saturated C16-C19 alkanes.

[0052] More preferably, the amount of branched saturated C16-C18 alkanes is more than 90% by weight, preferably more than 95% by weight, based on the weight of said mixture of branched and linear saturated C15-C19 alkanes.

[0053] More preferably, the amount of C15 alkanes is less than 5% by weight, in particular less than 2% by weight, based on the weight of said mixture of branched and linear saturated C15 to C19 alkanes.

[0054] More preferably, the amount of C16 alkanes is less than 5% by weight, in particular less than 2% by weight, based on the weight of said mixture of branched and linear saturated C15-C19 alkanes.

[0055] More preferably, the amount of branched saturated C17-C18 alkanes is more than 85% by weight, preferably more than 92% by weight, based on the weight of said mixture of branched and linear saturated C15-C19 alkanes.

[0056] More preferably, the amount of C17 alkane is between 15 and 20% by weight based on the weight of said mixture of branched and linear saturated C15 to C19 alkanes.

[0057] More preferably, the amount of branched saturated C18 alkanes is more than 50% by weight, preferably more than 60% by weight, even more preferably more than 70% by weight based on the weight of said mixture of branched and linear saturated C15-C19 alkanes.

[0058] More preferably, the amount of C18 alkanes is between 70 and 75% by weight, especially relative to the weight of said mixture of branched and linear saturated C15 to C19 alkanes.

[0059] In other words, the mixture of branched and linear saturated C15-C19 alkanes preferably consists primarily of C18 alkanes, most preferably consists primarily of branched C18 alkanes.

[0060] Since the cosmetic composition comprises a mixture of branched and linear saturated C15-C19 alkanes, said composition does not comprise lower alkanes, i.e. in particular does not comprise C12 alkanes, and in particular does not comprise C12, C13 or C14 alkanes.

[0061] More preferably, the mixture of C15 to C19 alkanes has a viscosity at 20° C. of 3 to 15 mPa·s, particularly preferably 6 to 12 mPa·s.

[0062] The refractive index of the mixture of C15 to C19 alkanes at 20° C. is more preferably 1.40 to 1.48, particularly preferably 1.42 to 1.45, and most preferably 1.43 to 1.44.

[0063] More preferably, the mixture of C15 to C19 alkanes is the mixture of C15 to C19 alkanes commercialized as EMOGREEN (trademark) L19 from SEPPIC.

[0064] In said composition, the ratio of the weight of said ester of fatty acid and dextrin to the weight of said mixture of branched and linear saturated C15-C19 alkanes is preferably less than 100% by weight, preferably in the range of 50-80% by weight, most preferably in the range of 60-70% by weight.

[0065] In other words, the weight of the C15 to C19 alkane contained in the present composition is preferably greater than the weight of the ester of the fatty acid and dextrin.

[0066] Furthermore, the weight ratio of the UV filter of formula (I) to the ester of fatty acid and dextrin in said composition is preferably from 70:1 to 1:100, preferably from 50:1 to 1:20, more preferably from 40:1 to 1:10, most preferably from 10:1 to 1:10.

[0067] [Additional ingredients] The cosmetic composition comprises a compound of formula R 1 OR 1 Dialkyl ethers of formula R 3 OOCR 2 COOR 3 diesters of dicarboxylic acids of formula R 4 COOR 5 and aliphatic monoesters of the formula R 6 COOR 7 The composition comprises at least one emollient selected from the group consisting of esters of R 1 is C 5~14 Alkyl groups, especially C 6~10 Represents an alkyl group. R 2 optionally containing at least one OH group 2~10 Alkylene groups, especially C 4~8 Represents an alkylene group. R 3 is C 2~14 Alkyl groups, especially C 2~8 Represents an alkyl group. R 4 is C 4~22 Alkyl groups, especially C 7~16 Represents an alkyl group. R 5 is C 8~20 Alkyl groups, especially C 8~16 Alkyl groups, more specifically C 10~16 Represents an alkyl group. R 6 is C 6~10 It represents an aryl group, in particular a phenyl group. R7 is C 8~20 Alkyl groups, especially C 8~16 Alkyl groups, more specifically C 12~15 Represents an alkyl group.

[0068] In a first embodiment, the emollient has the formula R 1 OR 1 It is a dialkyl ether of the formula:

[0069] Preferably, the dialkyl ether is selected from the group consisting of dihexyl ether, dioctyl ether, diethylhexyl ether, dioctyl ether and didecyl ether.

[0070] Preferably, the formula R 1 OR 1 The dialkyl ether of is dioctyl ether (= dicaprylyl ether (INCI)).

[0071] In a second embodiment, the emollient has the formula R 3 OOCR 2 COOR 3 It is a diester of the dicarboxylic acid.

[0072] This diester is a dicarboxylic acid (=HOOC-R 2 -COOH) and monoalcohols (R 3 It is important to recognize that the diesters are those obtainable by esterification of a monocarboxylic acid with a diol (-OH), and not those obtainable by esterification of a monocarboxylic acid with a diol.

[0073] The dicarboxylic acids may contain at least one OH group. Preferred examples of dicarboxylic acids containing a hydroxyl group are tartaric acid, pentacarboxylic acid and 3-hydroxyglutaric acid, with tartaric acid being preferred.

[0074] Particularly suitable dicarboxylic acids are selected from the group consisting of succinic acid, 2,2-dimethylmalonic acid, adipic acid, pimelic acid, sebacic acid, suberic acid, dodecanoic acid, in particular from the group consisting of adipic acid, pimelic acid, sebacic acid and suberic acid. Most preferably, said dicarboxylic acid is adipic acid or sebacic acid.

[0075] The alcohol (R 3 -OH) is preferably selected from the group consisting of ethanol, propanol, isopropanol, butanol, hexanol, octanol, 2-ethylhexanol, nonanol, isononanol, decanol, isodecanol, dodecanol and isododecanol, preferably selected from the group consisting of ethanol, isopropanol, butanol and 2-ethylhexanol.

[0076] Ethanol, propanol, isopropanol and butanol are most preferred.

[0077] formula R 3 OOCR 2 COOR 3 The diester is preferably a diester selected from the group consisting of diisopropyl sebacate, diethylhexyl adipate, dibutyl adipate, di-C12-13 alkyl tartrate, diethyl adipate, and diisopropyl adipate.

[0078] Diisopropyl sebacate is particularly preferred.

[0079] In a third embodiment, the emollient has the formula R 4 COOR 5 It is an aliphatic monoester of

[0080] The ester is a carboxylic acid (=R 4 -COOH) to monoalcohol (R 5 -OH) to obtain the ester.

[0081] Particularly suitable carboxylic acids are selected from the group consisting of pivalic acid, caproic acid, caprylic acid, 2-ethylhexanoic acid, capric acid, 3,5,5-trimethylhexanoic acid, isononanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid and arachidonic acid, preferably from the group consisting of 2-ethylhexanoic acid, 3,5,5-trimethylhexanoic acid, isononanoic acid, lauric acid, myristic acid, palmitic acid and stearic acid.

[0082] The alcohol (R 5 -OH) is preferably selected from the group consisting of octanol, 2-ethylhexanol, nonanol, isononanol, decanol, isodecanol, dodecanol, isododecanol, tridecanol, isotridecanol and cetearyl alcohol, preferably selected from the group consisting of 2-ethylhexanol, isodecanol, isotridecanol and cetearyl alcohol.

[0083] formula R 4 COOR 5 In one embodiment of the preferred esters, the residue R 4 is C 7~16 Represents an alkyl group, and the residue R 5 is C 8~18 Represents an alkyl group, especially R 4 = C8 alkyl group, R 5 =C 10 Alkyl group or C 13 It is an alkyl group.

[0084] formula R 4 COOR 5 In another embodiment of the preferred esters of the residue R 4 is C 7~14 represents an alkyl group, R 5 is C 10~16 Represents an alkyl group, especially R 4 = C8 alkyl group, R 5 =C 10 Alkyl group or C 13 It is an alkyl group.

[0085] formula R 4 COOR5 is preferably selected from the group consisting of ethylhexyl coconut fatty acid, ethylhexyl palmitate, isotridecyl myristate, isotridecyl isononanoate, isodecyl ethylhexanoate, isodecyl isononanoate, isodecyl octanoate, isodecyl neopentanoate and cetearyl isononanoate.

[0086] In further embodiments, the emollient has the formula R 6 COOR 7 It is an ester of.

[0087] Preferably, the ester is a C ester of benzoic acid 8~20 Alkyl esters, especially C 8~16 Alkyl esters, more specifically C 12~15 It is an alkyl ester. Formula R 6 COOR 7 The ester of is most preferably an alkyl benzoate (C 12~15 ).

[0088] The present cosmetic composition may contain two or more of the above-mentioned emollients.

[0089] The composition preferably comprises at least two emollients, in particular at least dicaprylyl ether and diisopropyl sebacate, as emollients.

[0090] The cosmetic composition typically includes other ingredients suitable for use in cosmetic compositions.

[0091] The cosmetic composition preferably comprises water.

[0092] The cosmetic composition may be in the form of a suspension or dispersion in a solvent or fatty substance, or in the form of an emulsion or microemulsion (in particular of the oil-in-water (O / W) or water-in-oil (W / O) type, silicone-in-water (Si / W) or water-in-silicone (W / Si) type, PIT-emulsion, multiple emulsion (for example of the oil-in-water-in-oil (O / W / O) or water-in-oil-in-water (W / O / W) type), Pickering emulsion, hydrogel, alcoholic gel, lipogel, single- or multiphase solution or vesicle dispersion, or other conventional forms which may also be applied by pen, as a facial pack or spray.

[0093] A preferred cosmetic composition in all embodiments of the present invention comprises water and is in the form of an emulsion.

[0094] In particular, the emulsion comprises an oily phase and an aqueous phase, such as in particular an O / W, W / O, Si / W, W / Si, O / W / O, W / O / W multiple or Pickering emulsion.

[0095] The total amount of oily phase present in such emulsions is preferably at least 10% by weight, for example in the range of 10 to 60% by weight, preferably in the range of 15 to 50% by weight, most preferably in the range of 15 to 40% by weight, based on the total weight of the cosmetic composition.

[0096] The amount of aqueous phase present in such emulsions is preferably at least 20% by weight, for example in the range of 40 to 90% by weight, preferably in the range of 50 to 85% by weight, and most preferably in the range of 60 to 85% by weight, based on the total weight of the cosmetic composition.

[0097] More preferably, the cosmetic composition is in the form of an oil-in-water (O / W) emulsion comprising an oily phase dispersed in an aqueous phase in the presence of an O / W or Si / W emulsifier. The preparation of such O / W emulsions is well known to those skilled in the art.

[0098] The composition in the form of an O / W emulsion may, for example, be provided in any formulation form of an O / W emulsion, such as a serum, milk or cream, which are prepared according to the usual methods. This composition may preferably constitute a dermatological or cosmetic composition, in particular, intended for topical application, for example intended to protect human skin against the harmful effects of UV radiation (anti-wrinkle, anti-aging, moisturizing, sun protection, etc.).

[0099] The cosmetic composition preferably comprises an additional UV filter. The additional UV filter may be a solid or liquid. Preferably, the additional UV filter is a solid UV filter.

[0100] Suitable liquid organic UV filters absorb light in the UV(B) and / or UV(A) range and are liquid at ambient temperature (i.e. 25° C.). Liquid UV filters of this type are known to the person skilled in the art and include in particular cinnamic acid esters such as octyl methoxycinnamate (Parsol® MCX) and isoamyl methoxycinnamate (Neo Heliopan® E 1000), salicylic acid esters such as homosalate (3,3,5 trimethylcyclohexyl 2-hydroxybenzoate, Parsol® HMS) and ethylhexyl salicylate (also known as ethylhexyl salicylate, 2-ethylhexyl 2-hydroxybenzoate, Parsol® EHS), acrylic acid esters such as octocrylene (2-cyano-3,3-diphenyl 2-ethylhexyl acrylate, Parsol® 340) and 2-cyano-3, 3-ethyl diphenylacrylate, esters of benzalmalonic acid, particularly dialkyl benzalmalonates, such as di(2-ethylhexyl) 4-methoxybenzalmalonate and polysilicone 15 (Parsol® SLX), dialkyl esters of naphthalic acid, such as diethylhexyl 2,6-naphthalate (Corapan® TQ), syringylidene malonate esters, such as diethylhexyl syringylidene malonate (Oxynex® ST liquid), and benzotriazolyl dodecyl p-cresol (Tinoguard® TL), as well as benzophenone-3 and drometrizole trisiloxane.

[0101] Particularly advantageous liquid organic UV filters are octyl methoxycinnamate, homosalate, ethylhexyl salicylate, octocrylene, diethylhexyl 2,6-naphthalate, diethylhexyl syringylidene malonate, benzotriazolyl dodecyl p-cresol, benzophenone-3, drometrizole trisiloxane and mixtures thereof.

[0102] In a preferred embodiment, the liquid UV filter is a liquid UV(B) filter selected from the group consisting of ethylhexyl methoxycinnamate, octocrylene, homosalate, ethylhexyl salicylate, benzophenone-3 and drometrizole trisiloxane.

[0103] Suitable solid organic UV filters absorb light in the UV(B) and / or UV(A) region and are solid at ambient temperature (i.e. 25° C.). Particularly suitable solid UV filters are those from the group consisting of bisethylhexyloxyphenol methoxyphenyl triazine, butyl methoxydibenzoylmethane, diethylaminohydroxybenzoyl hexyl benzoate, ethylhexyl triazone, diethylhexylbutamido triazone, 4-methylbenzylidene camphor and 1,4-di(benzoxazol-2′-yl)benzene and methylenebisbenzotriazolyltetramethylbutylphenol (bisoctrizole).

[0104] Bisoctrizole is a broadband ultraviolet radiation filter that absorbs not only UV(B) rays but also UV(A) rays, and has excellent photostability. Its absorption maxima are at 308nm and 349nm. Meanwhile, it not only absorbs UV light, but also reflects and scatters it. Therefore, Bisoctrizole is a complex UV absorber and an organic UV filter that is manufactured as fine (<200nm) organic particles. Even if other organic UV filters need to be dissolved in either oily or aqueous phases, Bisoctrizole is applied as invisible particles because it is difficult to dissolve in either.

[0105] Preferred solid organic UV(A) filters are UV(A) filters selected from the group consisting of bisethylhexyloxyphenol methoxyphenyl triazine, butyl methoxydibenzoylmethane, diethylamino hydroxybenzoyl hexyl benzoate and trisbiphenyl triazine.

[0106] Preferred solid organic UV(B) filters are UV(B) filters selected from the group consisting of ethylhexyl triazone (=Uvinul® T150), diethylhexylbutamido triazone (=Uvasorb® HEB) and 4-methylbenzylidene camphor (=Parsol® 5000).

[0107] The total amount of organic UV filters depends largely on the desired UV protection.

[0108] Preferably, the amount of solid organic UV filters, in particular solid organic UV(A) filters, is chosen in the range of 0.1 to about 6% by weight, preferably 0.5 to 5% by weight, most preferably 1 to 4% by weight.

[0109] More preferably, the amount of solid organic UV filters, in particular solid organic UV(B) filters, is chosen in the range of 0.1 to about 6% by weight, preferably 0.5 to 5% by weight, most preferably 1 to 4% by weight.

[0110] More preferably, the amount of liquid organic UV filter, in particular liquid organic UV(B) filter, is chosen in the range of 0.1 to about 10% by weight, preferably 0.5 to 12% by weight, most preferably 1 to 10% by weight.

[0111] Particularly preferably, the cosmetic composition comprises a UV filter of formula (I) or a salt thereof (preferably such as that commercialized under the name Parsol® HS by DSM Nutritional Products Ltd.) and at least one further UV filter. This at least further UV filter is preferably avobenzone (butyl methoxydibenzoylmethane) (preferably such as that commercialised as Parsol® 1789 by DSM Nutritional Products Ltd.), octocrylene (2-ethylhexyl 2-cyano-3,3-diphenylacrylate) (preferably such as that commercialised as Parsol® 340 by DSM Nutritional Products Ltd.), bisoctrizole (methylene bisbenzotriazolyl tetramethylbutylphenol) (preferably such as that commercialised as Parsol® MAX by DSM Nutritional Products Ltd.), bisethylhexyloxyphenol methoxyphenyl triazine (preferably such as that commercialised as Parsol® Shield by DSM Nutritional Products Ltd.), ethylhexyl salicylate (preferably such as that commercialised as Parsol® EHS by DSM Nutritional Products Ltd.), homosalate (preferably such as that commercialised as Parsol® EHS by DSM Nutritional Products Ltd.), ethylhexyl benzoate ... Ltd. as Parsol® HMS) and ethylhexyl methoxycinnamate (preferably such as that available as Parsol® MCX from DSM Nutritional Products Ltd.).

[0112] More preferably, this at least further UV filter is selected from the group consisting of avobenzone (butyl methoxydibenzoylmethane) (preferably such as that commercialized as Parsol® 1789 by DSM Nutritional Products Ltd.), octocrylene (2-ethylhexyl 2-cyano-3,3-diphenylacrylate) (preferably such as that commercialized as Parsol® 340 by DSM Nutritional Products Ltd.) and bisoctrizole (methylene bisbenzotriazolyl tetramethylbutylphenol) (preferably such as that commercialized as Parsol® MAX by DSM Nutritional Products Ltd.).

[0113] Preferably, the weight ratio of the UV filter of formula (I) to the further UV filter is from 1:15 to 5:1, preferably from 1:10 to 4:1, more preferably from 1:8 to 3:1.

[0114] The cosmetic composition further preferably comprises at least one emulsifier, preferably an anionic emulsifier, preferably an anionic emulsifier selected from the group consisting of potassium cetyl phosphate, disodium cetearyl sulfosuccinate, sodium stearoyl glutamate, sodium stearoyl lactylate, glyceryl stearate citrate and sodium cocoyl isethionate.

[0115] In an advantageous embodiment, the cosmetic composition further comprises a phosphate ester emulsifier. Among the preferred phosphate ester emulsifiers are mentioned C8-10 alkyl ethyl phosphate, alkyl (C9-15) phosphate, ceteareth-2 phosphate, ceteareth-5 phosphate, ceteth-8 phosphate, ceteth-10 phosphate, cetyl phosphate, (C6-10) pareth-4 phosphate, (C12-15) pareth-2 phosphate, (C12-15) pareth-3 phosphate, ceteareth-2 phosphate DEA, cetyl phosphate DEA, oleth-3 phosphate DEA, potassium cetyl phosphate, deceth-4 phosphate, deceth-6 phosphate and trilaureth-4 phosphate. A specific phosphate ester emulsifier is, for example, potassium cetyl phosphate, commercially available as Amphisol® K from DSM Nutritional Products Ltd Kaiseraugst.

[0116] The present cosmetic compositions may also include a non-ionic emulsifier.

[0117] Examples of non-ionic emulsifiers include condensates of aliphatic (C8-C18) primary or secondary straight or branched chain alcohols with alkylene oxides, usually ethylene oxide, usually having 6 to 30 ethylene oxide groups. Other representative non-ionic emulsifiers include mono- or di-alkyl alkanolamides, such as coconut oil fatty acid mono- or diethanolamide and coconut oil fatty acid monoisopropanolamide. Further non-ionic emulsifiers can include alkyl polyglycosides (APGs). APGs typically include alkyl groups attached (optionally via a bridging group) to a block of one or more glycosyl groups, such as Oramix™ NS 10 from Sepic; PLANTACARE® 818UP, PLANTACARE® 1200 and PLANTACARE® 2000 from BASF.

[0118] When the cosmetic composition is an O / W emulsion, it is preferably a polyhydroxystearate such as PEG-30 dipolyhydroxystearate, PEG-4 dilaurate, PEG-8 dioleate, PEG-40 sorbitol oleate, PEG-7 glyceryl cocoate, PEG-20 glyceryl almondate, PEG-25 hydrogenated castor oil, glyceryl stearate (and) PEG-100 stearate, PEG-7 olivoate, PEG-8 oleate, PEG-8 laurate, PEG-60 glyceryl almondate, PEG-20 methylglucose sesquistearate, PEG-40 stearate, PEG-100 stearate, The emulsion comprises at least one O / W or Si / W emulsifier selected from the following list: PEG-80 sorbitan laurate, steareth-2, steareth-12, oleth-2, ceteth-2, laureth-4, oleth-10, oleth-10 / polyoxyl 10 oleyl ether, ceteth-10, isosteareth-20, ceteareth-20, oleth-20, steareth-20, steareth-21, ceteth-20, isoceteth-20, laureth-23, steareth-100, glyceryl stearate citrate, glyceryl stearate (self-emulsifying), stearic acid, salts of stearic acid, polyglyceryl-3 methylglucose distearate. Further suitable emulsifiers are sorbitan oleate, sorbitan sesquioleate, sorbitan isostearate, sorbitan trioleate, lauryl glucoside, decyl glucoside, sodium stearoyl glutamate, sucrose polystearate and hydrogenated polyisobutene.

[0119] Additionally, one or more synthetic polymers may be used as emulsifiers, such as PVP eicosene copolymer, (acrylates / C10-30 alkyl acrylate) crosspolymer, (acrylates / steareth-20 methacrylate) copolymer, PEG-22 / dodecyl glycol copolymer, PEG-45 / dodecyl glycol copolymer, and mixtures thereof.

[0120] Another particularly suitable class of O / W emulsifiers are the non-ionic self-emulsifying systems derived from olive oil, known as (INCI name) cetearyl olivate and sorbitan olivate (chemical composition: sorbitan and cetearyl esters of olive oil fatty acids), for example sold under the trade name OLIVEM 1000.

[0121] Further suitable are commercially available polymeric emulsifiers, for example hydrophobized polyacrylic acids such as (acrylates / alkyl acrylates (C10-30)) crosspolymers available from Noveon under the tradenames Pemulen® TR-1 and TR-2.

[0122] Another particularly suitable type of emulsifier is polyglycerol esters or diesters of fatty acids, also called polyglyceryl esters / diesters (i.e. polymers in which fatty acids are linked by esterification with polyglycerin), such as Isolan GPS available from Evonik (INCI name (Diisostearate / Polyhydroxystearic acid / Sebacic acid) Polyglyceryl-4 (i.e. diester of a mixture of isostearic acid, polyhydroxystearic acid and sebacic acid with polyglycerin-4) or Dehymuls PGPH (INCI: Polyglyceryl-2 Dipolyhydroxystearate) available from Cognis.

[0123] Polyethylene glycol ethers such as Brij 72 (polyoxyethylene (2) stearyl ether) or Brij 721 (polyoxyethylene (21) stearyl ether) available from Croda are also suitable.

[0124] The at least one O / W or Si / W emulsifier is preferably used in an amount ranging from 0.5 to 10% by weight, particularly from 0.5 to 5% by weight, most particularly from 0.5 to 4% by weight, based on the total weight of the composition.

[0125] Suitable W / O or W / Si emulsifiers are polyglyceryl-2 dipolyhydroxystearate, PEG-30 dipolyhydroxystearate, cetyl dimethicone copolyol, polyglyceryl-3 diisostearate, polyglycerol esters of oleic acid / isostearic acid, polyglyceryl-6 hexalicinoleate, polyglyceryl-4 oleate, polyglyceryl-4 oleate / PEG-8-PG cocoate, magnesium stearate, sodium stearate, potassium laurate, potassium ricinoleate, sodium cocoate, sodium tallowate, potassium castorate, sodium oleate and mixtures thereof. Further suitable W / Si emulsifiers are lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone and / or PEG-9 polydimethylsiloxyethyl dimethicone and / or cetyl PEG / PPG-10 / 1 dimethicone and / or PEG-12 dimethicone crosspolymer and / or PEG / PPG-18 / 18 dimethicone. The at least one W / O emulsifier is preferably used in an amount of about 0.001 to 10% by weight, more preferably in an amount of 0.2 to 7% by weight, relative to the total weight of the composition.

[0126] Preferably, the cosmetic composition according to this further advantageously contains at least one co-surfactant, such as one selected from the group of mono- and diglycerides and / or fatty alcohols. The co-surfactant is generally used in an amount selected from the range of 0.1 to 10% by weight, in particular from the range of 0.5 to 6% by weight, most particularly from the range of 1 to 5% by weight, based on the total weight of the composition. Particularly suitable co-surfactants are selected from the list of alkyl alcohols, such as cetyl alcohol (Lorol C16, Lanette 16), cetearyl alcohol (Lanette O), stearyl alcohol (Lanette 18), behenyl alcohol (Lanette 22), glyceryl stearate, glyceryl myristate (Estol 3650), hydrogenated cocoglycerides (Lipocire Na10) and mixtures thereof.

[0127] The amount of the emulsifier is preferably in the range of 0.1 to 6.0% by weight, more preferably 0.25 to 5.0% by weight, and particularly preferably 0.5 to 4.0% by weight, based on the total weight of the cosmetic composition.

[0128] The composition is preferably sulfate-free.

[0129] The cosmetic composition is therefore preferably free of sulfates, in particular from the group consisting of alkyl sulfates, alkyl ether sulfates, alkyl amido ether sulfates, alkyl aryl polyether sulfates and monoglyceride sulfates, and mixtures thereof.

[0130] The term "free" as used herein, for example in "sulfate-free", is used to mean that the respective substance is present at less than 0.5% by weight, particularly less than 0.1% by weight, and more particularly less than 0.05% by weight, based on the weight of the composition. Preferably, "free" means that the respective substance is completely absent from the composition.

[0131] As used herein, the term "sulfate-free" refers to a composition that is a compound of the formula [ka] This means that the anionic surfactant does not include an anionic surfactant having a terminal anionic group.

[0132] The cosmetic composition preferably does not contain a cationic emulsifier. Typical examples of this type of cationic emulsifier are isostearamidopropyl dimethylamine, stearalkonium chloride, stearamidoethyl diethylamine, behentrimonium methosulfate, behenoyl PG trimonium chloride, cetrimonium bromide, behenamidopropyl dimethylamine behenate, brassicamidopropyl dimethylamine, stearamidopropyl dimethylamine stearate, cocamidopropyl PG dimonium chloride, distearoyl ethyl hydroxyethyl monium methosulfate, dicocoyl ethyl hydroxyethyl monium methosulfate, distearo ... These include, in particular, behentrimonium chloride, distearyldimonium chloride, cetrimonium chloride, steartrimonium chloride, palmitamidopropyltrimonium chloride, linoleamidopropyl dimethylamine, brassyl isoleucine esylate, acrylamidopropyltrimonium chloride / acrylates copolymer, linoleamidopropyl ethyldimonium ethosulfate, dimethyl lauramine isostearate, isostearamidopropyl lauryl acetodimmonium chloride, in particular behentrimonium chloride, distearyldimonium chloride, cetrimonium chloride, steartrimonium chloride and palmitamidopropyltrimonium chloride.

[0133] The cosmetic composition may further comprise cosmetic carriers, excipients and diluents, as well as additives and active ingredients commonly used in the skin care industry that are suitable for use in cosmetic compositions, such as, but not limited to, those described in the International Cosmetic Ingredient Dictionary & Handbook by the Personal Care Product Council (http: / / www.personalcarecouncil.org / ), available online at INFO BASE (http: / / online.personalcarecouncil.org / jsp / Home.jsp).

[0134] Possible ingredients of such cosmetic compositions are, in particular, preservatives, antioxidants, fatty substances / oils, thickeners, emollients, light screening agents, moisturizers, fragrances, surfactant auxiliaries, fillers, sequestering agents, cationic, nonionic or amphoteric polymers or mixtures thereof, acidifying or basifying agents, viscosity modifiers, etc., which improve performance and / or consumer acceptability, as well as natural hair nutrients such as botanical substances, fruit extracts, sugar derivatives and / or amino acids or any other ingredients that are usually incorporated into cosmetic compositions. The necessary amounts of auxiliaries and additives can be easily selected by a person skilled in the art based on the desired product and are illustrated, but not limited to, in the examples.

[0135] Particularly preferred thickening agents in all embodiments are xanthan gum, gellan gum and / or carboxymethylcellulose. The most preferred thickening agent in all embodiments is xanthan gum or gellan gum.

[0136] Such thickeners are preferably used in a (total) amount selected from the range of 0.1 to 1% by weight, more preferably in an amount of 0.1 to 0.5% by weight, based on the total weight of the cosmetic composition.

[0137] The cosmetic composition preferably has a pH in the range of 3 to 10, preferably in the range of 4 to 8, and most preferably in the range of 4 to 7.5. The pH can be easily adjusted, if necessary, using a suitable acid, such as citric acid, or a base, such as NaOH, according to standard methods in the art.

[0138] The cosmetic composition is preferably sulfate-free and / or paraben-free and / or silicone oils and / or silicone surfactants-free.

[0139] The cosmetic composition is preferably a topical composition.

[0140] The term "topical" as used herein is understood to mean external application to keratinous materials, in particular the skin, scalp, eyelashes, eyebrows, nails, mucous membranes and hair, preferably the skin.

[0141] Since topical compositions are intended for topical application, it is well understood that they comprise a physiologically acceptable medium, i.e. a medium that is compatible with the skin, mucous membranes and keratinous materials such as keratinous fibers. In particular, physiologically acceptable solvents are cosmetically acceptable carriers.

[0142] The term "cosmetically acceptable carrier" refers to any carrier and / or excipient and / or diluent conventionally used in cosmetic compositions, in particular sun protection products.

[0143] Preferably, the cosmetic composition is a skin care formulation, a decorative formulation or a functional formulation.

[0144] Examples of skin care formulations are in particular photoprotection formulations, anti-ageing formulations, formulations for treating photoageing, body oils, body lotions, body gels, treatment creams, skin protective ointments, skin powders, moisturizing gels, moisturizing sprays, moisturizers for the face and / or body, skin tanning formulations (i.e. compositions for artificial / sunless tanning and / or browning of human skin), e.g. self-tanning creams, and formulations for skin whitening.

[0145] Examples of functional formulations are cosmetic or pharmaceutical compositions containing active ingredients, such as, but not limited to, hormone preparations, vitamin preparations, plant extract preparations and / or anti-aging preparations.

[0146] The cosmetic composition is preferably a skin care composition.

[0147] In the most preferred embodiment, the cosmetic composition is a sunscreen composition.The sunscreen composition is, for example, a sunscreen emulsion, a sunscreen lotion, a sunscreen cream, a sunscreen oil, a sunscreen or a sunscreen preparation (sunscreen product), such as a daycare cream with SPF (sunscreen protection factor).Of particular interest are sunscreen creams, sunscreen lotions, sunscreen emulsions and sunscreen preparations.

[0148] Cosmetic compositions, and in particular topical sunscreen emulsions according to the present invention, generally have a pH in the range of 3 to 10, preferably in the range of 5 to 8, and most preferably in the range of 6 to 7.5. The pH can be easily adjusted, if necessary, using a suitable acid, such as citric acid, or a base, such as sodium hydroxide (e.g., as an aqueous solution), triethanolamine (TEA Care), tromethamine (Trizma base), and aminomethylpropanol (AMP-Ultra PC2000), according to standard methods in the art.

[0149] The amount of cosmetic composition applied to the skin is not critical and can be easily adjusted by one skilled in the art. Preferably, this amount is between 0.1 and 3 mg / cm. 2 Skin area, e.g., preferably 0.1 to 2 mg / cm 2 Skin area, most preferably 0.5-2 mg / cm 2 Selected from a range of skin

[0150] The cosmetic composition has improved sensory properties, in particular improved feel after application.

[0151] In one embodiment, the cosmetic composition is in the form of a gel.

[0152] The cosmetic composition described above has been shown to have improved water resistance. It has been shown that the addition of the mixture of branched and linear saturated C15-C19 alkanes described above in combination with the ester of fatty acid and dextrin detailed above to a cosmetic composition containing the UV filter ensulisole improves water resistance.

[0153] Furthermore, the above-mentioned cosmetic composition has been shown to have reduced stickiness. It has been observed that the stickiness is significantly reduced after a long time, i.e., after more than 3 minutes, particularly after more than 15 minutes, has passed after the cosmetic composition has been applied. It has been observed that the skin to which the cosmetic composition has been applied has significantly reduced stickiness, and in particular, sand is less likely to adhere to it. This is particularly important for its use on sandy beaches.

[0154] Thus, in a further aspect, the present invention provides a compound comprising at least one of formula (I) [ka] The present invention relates to the use of a mixture of branched and linear saturated C15-C19 alkanes in combination with an ester of a fatty acid and a dextrin to improve the water resistance of a topical cosmetic composition comprising a UV filter of the present invention, wherein the amount of branched saturated C15-C19 alkanes in said mixture of branched and linear saturated C15-C19 alkanes is more than 80% by weight, preferably more than 90% by weight, most preferably more than 92% by weight.

[0155] Preferably, said use comprises a compound of formula R 1 OR 1 Dialkyl ethers of formula R 3 OOCR 2 COOR 3 and diesters of dicarboxylic acids of formula R 4 COOR 5 and aliphatic monoesters of the formula R 6 COOR 7 and more preferably at least one emollient selected from the group consisting of esters of formula R 1 OR 1 Dialkyl ethers of formula R3 OOCR 2 COOR 3 and diesters of dicarboxylic acids of formula R 4 COOR 5 At least one emollient selected from the group consisting of aliphatic monoesters is included.

[0156] The definition and selection of ingredients are as already detailed above.

[0157] [Example] The following examples are provided to further illustrate the compositions and effects of the present invention. These examples are illustrative only and are not intended to limit the scope of the invention in any way.

[0158] The cosmetic compositions outlined in Table 1 or Table 2 were prepared according to standard methods in the art.

[0159] [water resistance] 1.3 mg / cm of each of the compositions outlined in Table 1 or Table 2 2 was applied to four PMMA plates (Schoenberg, 5 μm) and the plates were dried at RT for 30 min. The initial in vitro SPF (Sun Protection Factor) (SPF inital The plate was then immersed in a flask filled with 4 L of water (double distilled) for 20 min, during which the water temperature was 30°C and the water was stirred with a paddle stirrer for 150 min. -1 (The plate was attached to the edge of the flask with a clothespin, with the surface coated with the composition facing the flask). The plate was then dried at 40° C. for 30 minutes. The soaking / drying procedure was repeated one more time. After the final drying, the SPF immersed The in vitro SPF was measured as the standard deviation, and the water resistance (WR) was measured as the standard deviation. WR=[(SPF immersed / (SPF inital )] It was calculated as:

[0160] The results are shown in Tables 1 and 2.

[0161] [Table 1]

[0162] The results in Table 1 show that the cosmetic composition containing ensulisole (Reference Example 1) has poor water resistance, as can be seen from the measured SPF. When the composition further contains a mixture of branched and linear saturated C15-C19 alkanes, the water resistance is slightly improved (Reference Example 2 vs. Reference Example 1). Comparing Reference Examples 5 and 1, it can be seen that the specific mixture of branched and linear saturated C15-C19 alkanes has a beneficial effect on the water resistance of the cosmetic composition. When the composition further contains an ester of a fatty acid with dextrin, the water resistance is significantly improved (1, 2 vs. Reference Example 2).

[0163] Reference Examples 3 and 4 show that a specific mixture of branched and linear saturated C15-C19 alkanes has a beneficial effect. For example, on the one hand, when branched isododecane (C12) (Reference Example 3) is used instead of the mixture (C15-C19) (1), water resistance is significantly reduced. On the other hand, when a very specific single type of alkane, such as isohexadecane (C16) (Reference Example 4), is used instead of a mixture, instead of the very specific mixture (C15-C19) (1), water resistance is also reduced. This clearly shows that in order to improve the water resistance of a cosmetic composition containing ensulisole, which is a UV filter, it is important not only to use an ester of a fatty acid and dextrin, but also to use a very specific mixture of C15-C19 alkanes.

[0164] The compositions of Table 2 contain four UV filters (shown in italics in the table below).

[0165] [Table 2]

[0166] Table 2 confirms the results of Table 1 with more complex formulations and the results show that the SPF is significantly improved. In this case, the improvement in water resistance is even more significant than in Table 1.

Claims

1. A cosmetic composition comprising: - Formula (I) 【Chemistry 1】 or a salt thereof; a mixture of branched and linear saturated C15-C19 alkanes; - Ester of fatty acid and dextrin wherein the amount of branched saturated C15-C19 alkane in the mixture of branched and linear saturated C15-C19 alkanes is greater than 80% by weight, preferably greater than 90% by weight, and most preferably greater than 92% by weight.

2. 2. The composition according to claim 1, characterized in that the amount of linear saturated C15-C19 alkanes in the mixture of branched and linear saturated C15-C19 alkanes is less than 10% by weight, preferably less than 8% by weight, most preferably more than 5% by weight.

3. 3. The composition according to claim 1 or 2, characterized in that the amount of branched saturated C18 alkanes is more than 50% by weight, preferably more than 60% by weight, even more preferably more than 70% by weight, relative to the weight of the mixture of branched and linear saturated C15-C19 alkanes.

4. Formula R １ OR １ dialkyl ethers of formula R ３ O.O.C.R. ２ COOR ３ and diesters of dicarboxylic acids of formula R ４ COOR ５ and further comprising at least one emollient selected from the group consisting of aliphatic monoesters of the formula: R １ is C ５～１４ Alkyl groups, especially C ６～１０ represents an alkyl group; R ２ C optionally containing at least one OH group ２～１０ Alkylene groups, especially C ４～８ represents an alkylene group; R ３ is C ２～１４ Alkyl groups, especially C ２～８ represents an alkyl group; R ４ is C ４～２２ Alkyl groups, especially C ７～１６ represents an alkyl group; R ５ is C ８～２０ Alkyl groups, especially C ８～１６ Alkyl groups, more particularly C １０～１６ A composition according to any one of claims 1 to 3, characterized in that it represents an alkyl group.

5. 5. The composition of claim 4, wherein the emollient is diisopropyl sebacate.

6. The composition according to any one of claims 1 to 5, characterized in that it further comprises at least one further UV filter.

7. 7. The composition according to claim 6, characterized in that the further UV filter is selected from the group consisting of avobenzone (butyl methoxydibenzoylmethane), octocrylene (2-ethylhexyl 2-cyano-3,3-diphenylacrylate) and bisoctrizole (methylene bisbenzotriazolyl tetramethylbutylphenol).

8. 8. Composition according to claim 6 or 7, characterized in that the weight ratio of the UV filter of formula (I) to the further UV filter is from 1:15 to 5:1, preferably from 1:10 to 4:1, more preferably from 1:8 to 3:

1.

9. 9. The composition according to claim 1, wherein the fatty acid of the ester of fatty acid with dextrin is a C14-C18 fatty acid, in particular a linear C14-C18 fatty acid, most preferably palmitic acid.

10. 10. The composition according to claim 1, wherein the dextrin of the ester of fatty acid with dextrin has an average degree of glycopolymerization of 3 to 20, in particular 8 to 16.

11. 11. The composition according to any one of claims 1 to 10, characterized in that the ester of fatty acid with dextrin has an average number of esterified hydroxyl groups per glucose unit of more than 2.5, preferably between 2.7 and 3.5, more preferably between 28 and 3.4, most preferably between 2.8 and 3.

2.

12. The ester of fatty acid and dextrin has a molecular weight M of 8,000 to 16,000 Da, preferably 9,000 to 13,000 Da, more preferably 10,000 to 11,500 Da. ｎ The composition according to any one of claims 1 to 11, characterized in that it has

13. A composition according to any one of claims 1 to 12, characterized in that it comprises water and is in the form of an emulsion.

14. Composition according to any one of claims 1 to 13, characterized in that it has a sun protection factor (SPF) of 10 or more, preferably 20 or more, more preferably 30 or more, even more preferably 50 or more.

15. At least one compound represented by formula (I) 【Chemistry 2】 or a salt thereof, wherein the amount of branched saturated C15-C19 alkane in the mixture of branched and linear saturated C15-C19 alkanes is more than 80% by weight, preferably more than 90% by weight, most preferably more than 92% by weight.

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