Composition includes inorganic UV filter and thickener
A composition with specific inorganic UV filters and thickeners stabilizes UV filters, addressing aggregate issues and enhancing UV protection and texture in sunscreen formulations.
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Utility models
- Current Assignee / Owner
- LOREAL SA
- Filing Date
- 2024-12-10
- Publication Date
- 2026-06-12
Abstract
Description
Title of the invention: Composition comprising an inorganic UV filter and thickener technical field
[0001] The present invention relates to a composition including at least one inorganic UV filter and at least one specific thickener, as well as a cosmetic process using the composition. STATE OF THE ART
[0002] Skin aging is not solely a consequence of chronological age. The skin is exposed to various environmental aggressions, such as UV (ultraviolet) radiation, which cause the formation of free radicals in the skin. Free radicals include, for example, singlet oxygen, hydroxyl radicals, superoxide anions, nitric oxide, and hydrogen radicals. The end result is a loss of skin elasticity and the appearance of wrinkles, leading to premature skin aging. This process is commonly referred to as photoaging.
[0003] Numerous sunscreen compositions designed to protect keratinous material such as skin against UV radiation have been proposed to date. Sunscreen compositions generally include one or more UV filters to protect against UV radiation. In particular, sunscreen compositions commonly include inorganic UV filters such as fine particles of TiO2. DISCLOSURE OF THE INVENTION
[0004] In order to stably suspend or disperse inorganic UV filters in a composition, one or more thickeners may be used. Increasing the amount of a thickener in a composition containing inorganic UV filters can enhance the stability of the inorganic UV filters suspended or dispersed in the composition.
[0005] However, the use of more than one thickener in a composition sometimes causes the formation of aggregates, which may be in the form of vermicelli, derived from the thickener, during the use of the composition.
[0006] Thus, an objective of the present invention is to propose a stable composition comprising a thickener with reduced aggregate formation, which may be in the form of vermicelli.
[0007] The above objective of the present invention can be achieved by a composition, including:
[0008] (a) at least one inorganic UV filter; and
[0009] (b) at least one thickener selected from (bl) thickeners based on (meth)acrylic, (b2) cellulose-based thickeners, and (b3) mixtures thereof,
[0010] in which
[0011] The (bl) (meth)acrylic-based thickener comprises at least one monomer bearing at least one sulfonic group, and
[0012] the weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition is less than 0.2, preferably 0.15 or less, and more preferably 0.1 or less.
[0013] The (a) inorganic UV filter can be selected from (a3) amphiphilic inorganic UV filters.
[0014] The (a3) amphiphilic inorganic UV filter may include at least one coating comprising at least one amphiphilic material, preferably at least one surfactant, more preferably at least one anionic surfactant and / or at least one non-ionic surfactant.
[0015] The (a3) amphiphilic inorganic UV filter may comprise at least one coating comprising
[0016] (i) at least one anionic surfactant selected from alkyl phosphates and their salts, preferably from C8-C26 alkyl monophosphates and their salts, more preferably from C12-C22 alkyl monophosphates and their salts, even more preferably from the group consisting of cetyl phosphate, potassium cetyl phosphate and a mixture thereof, and in particular cetyl phosphate;
[0017] and / or
[0018] (ii) at least one non-ionic surfactant selected from
[0019] - the esters of a fatty acid, preferably a C8-C24 fatty acid, and more preferably of a fatty acid in Ci6-C22, and of (poly)oxyalkylated sorbitol esters, in particular oxyethylated and / or oxypropylened such as polysorbate-20, polysorbate-40, polysorbate-60, polysorbate-65, polysorbate-80 and polysorbate-85;
[0020] - esters of a fatty acid in the form C12-C2O and a polyglycerol comprising 3 to 12 glycerol groups, preferably 6 to 10 glycerol groups such as polyglyceryl-6 stearate, polyglyceryl-6 isostearate, polyglyceryl-6 laurate, polyglyceryl-6 myristate, polyglyceryl-6 oleate, polyglyceryl-10 stearate, polyglyceryl-10 isostearate, polyglyceryl-10 laurate, polyglyceryl-10 myristate and polyglyceryl-10 oleate; and
[0021] - mixtures thereof,
[0022] preferably (i) at least one anionic surfactant selected from alkyl phosphates and their salts, preferably from C8-C26 alkyl monophosphates and their salts, more preferably from C12-C22 alkyl monophosphates and their salts, even more preferably from the group consisting of cetyl phosphate, potassium cetyl phosphate, and a mixture thereof, and in particular cetyl phosphate.
[0023] The above coating may further comprise at least one hydrophilic compound selected from the group consisting of silica, hydrated silica, alumina and aluminum hydroxide: at least one lipophilic compound selected from the group consisting of stearic acid and isostearic acid: or mixtures thereof, preferably at least one hydrophilic compound selected from the group consisting of silica, hydrated silica, alumina, and aluminum hydroxide, and more preferably silica.
[0024] The quantity of the (a) inorganic UV filter(s) in the composition according to the present invention can be from 0.1% to 35% by weight, preferably from 0.5% to 30% by weight, and more preferably from 1% to 25% by weight, relative to the total weight of the composition.
[0025] The (bl) thickener based on (meth)acrylic can be selected from (meth)acrylic polymers comprising at least one monomer bearing at least one sulfonic group, and at least one monomer of N,N-di(Ci-C4)alkylacrylamide, preferably (meth)acrylic polymers comprising at least one monomer bearing at least one sulfonic group, at least one monomer of N,N-di(Ci-C4)alkylacrylamide, and at least one monomer represented by the following formula (3):
[0026] in which Ri denotes a hydrogen atom or a linear or branched Ci-C6 alkyl radical, preferably methyl; Y denotes O or NH; R2 denotes a hydrocarbon-based radical comprising from 6 to 50 carbon atoms and more preferably from 8 to 40 carbon atoms and even more preferably from 10 to 30 carbon atoms; and x denotes a number from 0 to 100, and more preferably optionally crosslinked copolymers of 2-acrylamido-2-methylpropanesulfonic acid, N,N-dimethylacrylamide, tetraethoxylated lauryl methacrylate and lauryl methacrylate.
[0027] The quantity of the (meth)acrylic-based thickener(s) in the composition according to the present invention can be from 0.01% to 10% by weight, preferably from 0.05% to 5% by weight, and more preferably from 0.1% to 1% by weight, relative to the total weight of the composition.
[0028] The (b2) cellulose-based thickener may be selected from the group consisting of microcrystalline cellulose, carboxymethylcellulose, sodium carboxymethylcellulose or cellulose gum, carboxymethyl hydroxyethylcellulose, hydroxyethyl cellulose, hydroxyethyl ethylcellulose, hydroxypropylcellulose, hydroxypropyl methylcellulose, hydroxyethylmethylcellulose, sodium cellulose sulfate, and a mixture thereof, preferably from the group consisting of microcrystalline cellulose, cellulose gum, and a mixture thereof.
[0029] The quantity of the (b2) cellulose-based thickener(s) in the composition according to the present invention can be from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight, and more preferably from 0.1% to 5% by weight, relative to the total weight of the composition.
[0030] The composition according to the present invention may further comprise (c) at least one oil.
[0031] The quantity of the (c) oil(s) in the composition according to the present invention can be from 0.01% to 40% by weight, preferably from 0.1% to 35% by weight, and more preferably from 1% to 30% by weight, relative to the total weight of the composition.
[0032] The composition according to the present invention may further comprise (d) water.
[0033] The composition according to the present invention may be in the form of a dispersion or an O / W emulsion.
[0034] The present invention also relates to a cosmetic process for a keratinous material, such as skin, comprising:
[0035] the application on keratinous material of the composition according to the present invention. Best embodiment of the invention
[0036] After diligent research, the inventors discovered that it is possible to propose a stable composition comprising a thickener with reduced aggregate formation, which can be in the form of vermicelli.
[0037] Thus, the composition according to the present invention comprises:
[0038] (a) at least one inorganic UV filter; and
[0039] (b) at least one thickener selected from (bl) thickeners based on (meth)acrylic, (b2) cellulose-based thickeners, and (b3) mixtures thereof,
[0040] in which
[0041] The (bl) (meth)acrylic-based thickener comprises at least one monomer bearing at least one sulfonic group, and
[0042] the weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition is less than 0.2, preferably 0.15 or less, and more preferably 0.1 or less.
[0043] The composition according to the present invention can protect against UV rays. Therefore, the composition according to the present invention can be used to protect a keratinous material from UV rays, such as those from the sun.
[0044] The composition according to the present invention is stable. For example, the (a) inorganic UV filter can be stably suspended or dispersed in the composition according to the present invention. Thus, the composition according to the present invention can be stored even for a long period.
[0045] In addition, the composition according to the present invention exhibits reduced formation of aggregates, which may be in the form of vermicelli or string-like objects, derived from (b) thickener in the composition.
[0046] Controlling the weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition according to the present invention can contribute to the reduced formation of aggregates derived from the (b) thickener.
[0047] Furthermore, the use of at least one (a1) phosphate-treated inorganic UV filter in the composition according to the present invention can also contribute to the reduced formation of aggregates derived from the (b) thickener.
[0048] In addition, the composition according to the present invention can offer a good user experience such as a feeling of freshness and / or a reduced greasy or sticky texture.
[0049] The composition, process and similar according to the present invention will be described in more detail below. [UV absorbing system]
[0050] Definition:
[0051] A “UV-absorbing system containing essentially at least one ultraviolet (UV) attenuating physical material” as used herein means that the disclosure compositions contain less than 3% of UV filters other than the ultraviolet (UV) attenuating physical material(s), in particular less than 3% of organic UV filters, which means that in this definition, as subcategories, are compositions containing less than 2% of UV filters other than the ultraviolet (UV) attenuating physical material(s), in particular less than 2% of organic UV filters, and less than 1% of UV filters other than the ultraviolet (UV) attenuating physical material(s), in particular less than 1% of organic UV filters, as well as those that are “free of UV filters other than the ultraviolet (UV) attenuating physical material,"Virtually free of UV filters other than the physical ultraviolet (UV) attenuating material," and "devoid of UV filters other than the physical ultraviolet (UV) attenuating material," as defined above.
[0052] “Primary particle” as used in connection with the description of a material Ultraviolet (UV) attenuation physics here refers to inorganic or organic particles (structures) that can be held together by molecular or atomic bonding to form an ultraviolet (UV) attenuation physics material.
[0053] “Primary particle size” means the size of a non-aggregated primary particle in a physical material for attenuating ultraviolet (UV).
[0054] “Passive” as used in relation to the description of a physical material Ultraviolet (UV) attenuation here refers to a material that has been treated in such a way that the potential for the release of ionic species when in contact with water is reduced compared to the same non-passivated material.
[0055] In the following definition, we use the abbreviations ZnO for zinc oxide and TiO2 for titanium dioxide.
[0056] Physical UV attenuation material:
[0057] According to this disclosure, compositions comprising at least one ultraviolet (UV) attenuating physical material are proposed. "UV attenuating physical material," as used herein, refers to solid inorganic ingredients that absorb incoming ultraviolet (UV) light and may optionally scatter incoming ultraviolet (UV) light, when present in the compositions disclosed herein. The physical UV attenuation material preferably comprises one or more metal oxides such as, for example, oxides of titanium, chromium, zinc, tin, alumina, cerium and / or iron. Specific examples of suitable metal oxide(s) include, but are not limited to, at least one metal oxide selected from the group consisting of titanium dioxide, zinc oxide, iron oxide, chromium oxide, tin oxide, alumina, cerium oxide, and mixtures thereof.
[0058] The UV attenuating physical material may be subjected to a surface treatment agent to improve the sensoriality, performance, and / or compatibility of the compositions disclosed herein. Suitable surface treatment agents may include hydrophobic or hydrophilic surface treatment agents such as, for example, those described in Cosmetics & Toiletries, February 1990, Vol. 105, pp. 53-64, including, but not limited to, specific examples such as amino acids, beeswax, fatty acids, fatty acid salts, fatty alcohols, anionic surfactants, lecithin, lecithin derivatives, metal alkoxides, polyethylene, silicones, proteins, alkanolamines, silicon dioxide, metal oxides, sodium hexametaphosphate, alumina, and / or glycerol. Preferably, the UV attenuating physical material is passivated.
[0059] Preferably, the UV attenuation physical material comprises one or more zinc oxides and / or titanium dioxides. Preferably, the UV attenuation physical material comprising one or more zinc oxides or titanium dioxides is passivated.
[0060] According to a first embodiment, the UV attenuation physical material comprises titanium dioxide. The titanium dioxide may be present in any form. Furthermore, the TiO2 may be treated (coated) or untreated.
[0061] According to a second embodiment, the UV attenuation physical material comprises zinc oxide. The zinc oxide may be present in any form (for example, as wurtzite or zinc blende) in the compositions disclosed herein. Furthermore, the zinc oxide may be treated (coated) or untreated.
[0062] Preferably, the UV attenuation physical material comprises one or more zinc oxides. More preferably, the zinc oxide is passivated.
[0063] Preferably, the physical attenuation material comprises one or more titanium dioxides. More preferably, the titanium dioxide is passivated.
[0064] Preferably, the average primary particle size of the ultraviolet (UV) attenuating material is from 1 nm to 500 nm, preferably from 5 nm to 250 nm, preferably from 10 nm to 100 nm, and preferably from 20 nm to 50 nm, including all intermediate ranges and sub-ranges such as, for example, 25 nm to 40 nm, 10 nm to 75 nm and 15 nm to 150 nm.
[0065] The coated pigments are more particularly titanium oxides that have been coated:
[0066] - of hydrated silica, such as Tayca's MT-100WP product,
[0067] - of silica and iron oxide, such as the product "Sunveil F" from Ikeda,
[0068] - of silica and alumina, such as the MT-500SA and MT-100SA products from Tayca and Croda's Tioveil™ AQ-N,
[0069] - of alumina, such as Ishihara's TTO-55 (A) product,
[0070] - of alumina and aluminum stearate, such as the MT-100TV and MT-100Z products and Tayca's MT-01, Croda's Solaveil™ CT 100, and Merck's Eusolex T-AVO,
[0071] - of silica, alumina and alginic acid, such as Tayca's MT-lOOAQ product,
[0072] - of alumina and aluminum laurate,
[0073] - of iron oxide and iron stearate,
[0074] - of zinc oxide and zinc stearate,
[0075] - of silica and alumina and treated with a silicone, such as the MTY-500SAS products or Microtitanium Dioxide MT-100SAS from Tayca,
[0076] - of silica, alumina and aluminum stearate and treated with a silicone,
[0077] - of silica and treated with a silicone,
[0078] - of silica and treated with a silicone, such as Ishihara's TTO-55(S) product;
[0079] - of triethanolamine,
[0080] - of stearic acid, such as Ishihara's TTO-55 (C) product,
[0081] - of sodium hexametaphosphate,
[0082] - of TiO2 treated with octyltrimethylsilane,
[0083] - of TiO2 treated with a polydimethylsiloxane,
[0084] - of TiO2 anatase / rutile treated with a polydimethylhydrogenosiloxane,
[0085] - TiO2 coated with triethylhexanoin, aluminium stearate and alumina sold under the trade name Solaveil™ CT-200 by Croda,
[0086] - TiO2 coated with aluminum stearate, alumina and silicone, sold under the name commercial Solaveil™ CT-12W by Croda,
[0087] - of TiO2 coated with lauroyl lysine,
[0088] - of TiO2 coated with C9-C15 fluoroalcohol phosphate and hydroxide aluminum.
[0089] Other examples include TiO2 pigments doped with at least one transition metal such as iron, zinc, or manganese, and more particularly manganese. Preferably, these doped pigments are in the form of an oily dispersion. The oil in the oily dispersion is preferably selected from triglycerides, particularly capric / caprylic acids. The oily dispersion of titanium dioxide particles may also include one or more dispersants, for example, a sorbitan ester, such as sorbitan isostearate, or a polyoxyalkylated fatty acid ester of glycerol, such as tri-PPG-3 myristylether citrate and polyglyceryl-3 polyricinoleate. Preferably, the oily dispersion of titanium dioxide particles includes at least one dispersant selected from polyoxyalkylated fatty acid esters of glycerol.One example is the oily dispersion of manganese-doped TiO2 particles in capric / caprylic acid triglyceride in the presence of tri-PPG-3 myristyl ether citrate and polyglyceryl-3 polyricinoleate and sorbitan isostearate, the INCI name of which is: titanium dioxide (and) TRLPPG-3 myristyl ether citrate (and) polyglyceryl-3 ricinoleate (and) sorbitan isostearate, for example the product sold under the trade name Optisol™ OTP-1 by Croda.
[0090] Uncoated titanium oxide pigments are for example sold by Tayca under the trade names MT-500B or MT-600B, or by Evonik under the name Degussa P 25.
[0091] Suitable examples of uncoated zinc oxide include, for example, zinc oxide marketed under the name "Z-COTE" by BASF, zinc oxide zinc marketed under the name "NanoArc Zinc Oxide" by Nanophase Technologies, zinc oxide marketed under the name "MZ-500", "MZ-300", "MZ-200" or "MZ-150" by TAYCA.
[0092] Treated (coated) zinc oxide compounds are compounds that have undergone one or more surface treatments of a chemical, electronic, mechanochemical and / or mechanical nature with compounds such as described, for example, in Cosmetics & Toiletries, February 1990, Vol. 105, pp. 53-64, such as amino acids, beeswax, fatty acids, fatty alcohols, anionic surfactants, lecithins, sodium, potassium, zinc, iron or aluminum salts of fatty acids, metal alkoxides (titanium or aluminum), polyethylene, silicones, hydrated silica, proteins (collagen, elastin), alkanolamines, silicon oxides, triethoxycaprylylsilane, metal oxides or sodium hexametaphosphate.
[0093] Examples of suitable coated zinc oxide include, but are not limited to, polymethylhydrogenosiloxane-coated zinc oxide; zinc oxide dispersed in Cl2-15 alkyl benzoate (INCI: Zinc Oxide (and) Cl2-15 Alkyl Benzoate (and) Polyhydroxystearic Acid (and) Isostearic Acid), marketed by Croda under the trade name Sovaveil CZ-100; zinc oxide dispersions in C9-12 alkane with a dispersing agent, marketed under the trade name "DAITOPERSION Zn-60VA" by Daito Kasei; silicone-grafted acrylic polymer-coated ZnO dispersed in cyclodimethylsiloxane, marketed under the name "SPD-Z5" by Shin-Etsu; ZnO coated with hydrated silica, marketed by TAYCA under the name "MZ-500HP"; ZnO coated with hydrated silica, triethoxysilylethyl polydimethylsiloxyethyl hexyl dimethicone and hydrogenodimethicone (H-Me-Si), marketed by TAYCA under the name MZ-510 HPSX;stearic acid-coated or isostearic acid-coated ZnO, such as those marketed by TAYCA under the name "MZ-505T", "MZY-505EX" or "MZY-304EX"; silicone oil-coated ZnO, such as those marketed by TAYCA under the name "MZX-510HPS", "MZY-505S", "MZY-510M3S", "MZ-505M", "MZY-303S", "MZY-303M", "MZY-203S", "MZY-210M3S" or "MZY-153S"; triethoxycaprylylsilane-coated ZnO, such as those marketed by BASF under the name Z-COTE HP1, or by TAYCA under the name "MZX-508OTS", "MZY-203OTS" or "MZX-304OTS" or by DSM under the name PARSOL ZX; for example: ZnO marketed under the brand name "Zinc Oxide CS-5" by Toshiba (ZnO coated with polymethylhydrosiloxane); ZnO marketed under the brand name "Nanogard Zinc Oxide FN" by Nanophase Technologies (as a 40% dispersion in Finsolv TN, C12-C15 alkyl benzoate);of ZnO marketed under the brand name "Daitopersion Zn-30" and "Daitopersion Zn-50" by Daito (dispersions in polydimethylsiloxane / ; oxyethylenated cyclopolymethylsiloxane comprising 30% or 50% of zinc nanooxides coated with silica and polymethylhydrosiloxane); ZnO marketed under the brand name "NFD Ultrafine ZnO" by Daikin (ZnO coated with perfluoroalkyl phosphate and a perfluoroalkylethyl copolymer dispersed in cyclopentasiloxane); ZnO marketed under the brand name "SPD-Z1" by Shin-Etsu (ZnO coated with a silicone-grafted acrylic polymer dispersed in cyclodimethylsiloxane); ZnO marketed under the brand name "Escalol Z100" by ISP (alumina-treated ZnO dispersed in a copolymer mixture of ethylhexyl methoxycinnamate / PVP-hexadecene methicone); ZnO marketed under the brand name "Fuji ZnO-SMS-10" by Fuji Pigment (ZnO coated with silica and polymethylsilsesquioxane); and ZnO marketed under the brand name "Nanox Gel TN" by Elementis (ZnO dispersed at 55% in C12-C15 alkyl benzoate with hydroxystearic acid polycondensate);ZnO marketed under the Finex brand by SAKAI such as FINEX-50LP, FINEX-50S-LP2 and FINEX-30S-LPT (ZnO coated with hydrogenodimethicone); FINEX-33W (ZnO coated with hydrated silica), FINEX-52W-LP2 and FINEX-33W-LP2 (ZnO coated with hydrogenodimethicone and hydrated silica), FINEX-50-OTS and FINEX-30-OTS (ZnO coated with triethoxycaprylysilane). Preferred coatings may include one or more of the following: hydrated silica, triethoxysilylethyl polydimethylsiloxyethyl, hexyl dimethicone and / or hydrogenodimethicone, triethoxycaprylysilane.
[0094] According to preferred embodiments of this disclosure, zinc oxide may be in the form of wafers, and may be coated or uncoated. Suitable examples of such forms are sold by Croda under the name Solaveil (MicNo), such as Solaveil MXP3, MZP7, MZP8, MZ3-100, MZ3-300, and MZ7-100. Preferably, the zinc oxide wafers useful according to this disclosure (1) have a median specific area of more than 25 square meters per gram, preferably greater than 30 square meters per gram, and / or (2) are transparent (i.e., transmission >30% at 600 nm). Suitable examples of such wafer forms may also be found in US Patent 11,608,275.
[0095] A suitable example of other coated pigments, which have an amphiphilic property, may be chosen from:
[0096] cetyl phosphate and silica coated titanium oxides, such as Merck's "EusolexT-EASY" product;
[0097] titanium oxides coated with polyglyceryl-10 oleate and stearic acid, such as Tayca's "MTY-200STW";
[0098] zinc oxides coated with polyglyceryl-10 oleate and isostearic acid, such as Tayca's "MZY-505EXW";
[0099] titanium oxides coated with polysorbate 80 and isostearic acid, such as Tayca's "MT-10EXW"; and
[0100] zinc oxides coated with polysorbate 80 and isostearic acid, such as Tayca's "MZY-304EXW".
[0101] Preferably, the at least one ultraviolet (UV) attenuating physical material is present in the compositions of this disclosure in an amount of at least 5% by weight, preferably at least about 10% by weight, preferably at least about 12% by weight, preferably at least about 14% by weight, and preferably at least about 15% by weight, the upper end of the range of the at least one ultraviolet (UV) attenuating physical material present being preferably about 40% by weight (e.g., about 5 to 40%, about 10 to 40%, about 12 to 40%, etc.), preferably about 30% by weight (e.g., about 5 to 30%, about 10 to 30%, about 12 to 30%, etc.), preferably about 25% by weight (e.g., about 5 to 25%, about 10 to 25%, about 12 to 25%, etc.), and preferably about 20% by weight (for example, about 5 to 20%, about 10 to 20%, about 12 to 20%, etc.), all weights being based on the total weight of the composition.
[0102] According to preferred embodiments, the compositions of this disclosure contain a UV-absorbing system comprising essentially one or more ultraviolet (UV) attenuating physical materials as defined above. [Composition]
[0103] The composition according to the present invention comprises: a. at least one inorganic UV filter; and b. at least one thickener selected from (b1) (meth)acrylic-based thickeners, (b2) cellulose-based thickeners, and (b3) mixtures thereof,
[0104] wherein
[0105] The (bl) (meth)acrylic-based thickener comprises at least one monomer bearing at least one sulfonic group, and
[0106] the weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition is less than 0.2, preferably 0.15 or less, and more preferably 0.1 or less.
[0107] The weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition according to the present invention can be 0.001 or more, preferably 0.005 or more, and more preferably 0.01 or more.
[0108] Thus, the weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition according to the present invention can be 0.001 or more and less than 0.2, preferably from 0.005 to 0.15, and more preferably from 0.01 to 0.1. (Inorganic UV filter)
[0109] The composition according to the present invention comprises (a) at least one inorganic UV filter. Two or more different types of inorganic UV filters may be used in combination. Thus, a single type of inorganic UV filter or a combination of different types of inorganic UV filters may be used.
[0110] The term “UV” here includes the UV-B region (wavelengths from 260 to 320 nm) and the UV-A region (wavelengths from 320 to 400 nm).
[0111] The (a) organic UV filter can be active in the UV-A and / or UV-B region.
[0112] The (a) inorganic UV filter is preferably insoluble in solvents such as water and ethanol commonly used in cosmetics.
[0113] It is preferable that the (a) organic UV filter be solid at room temperature (25 °C) and atmospheric pressure (101325 Pa).
[0114] It is preferable that the inorganic particle for the (a) inorganic UV filter be in the form of a fine particle such that its average (primary) diameter ranges from 1 nm to 80 nm, preferably from 5 nm to 60 nm, and more preferably from 15 nm to 50 nm. The average (primary) particle size or average (primary) particle diameter is here an average diameter in volume.
[0115] The inorganic particle may be chosen from the group consisting of silicon carbide, metal oxides, and mixtures thereof.
[0116] Preferably, the inorganic particle for the (a) inorganic UV filters can be chosen from metal oxides, such as, for example, titanium dioxide (amorphous or crystalline in the form of rutile and / or anatase) and zinc oxide, and mixtures thereof, and more preferably the inorganic particle is titanium dioxide.
[0117] The (a) inorganic UV filter may or may not be coated. In other words, the (a) inorganic UV filter may or may not have a surface treatment. Thus, the (a) inorganic UV filter may have at least one coating.
[0118] Coated inorganic UV filters are preferable because the UV filtering effects of inorganic UV filters can be enhanced. Furthermore, the coating(s) can contribute to the uniform or homogeneous dispersion of the inorganic UV filters in the composition according to the present invention.
[0119] The (a) inorganic UV filter can be selected from (a1) hydrophilic inorganic UV filters, (a2) lipophilic inorganic UV filters, (a3) amphiphilic inorganic UV filters, and mixtures thereof.
[0120] It is preferable that the (a) inorganic UV filter be chosen from among the (a3) amphiphilic inorganic UV filters.
[0121] The quantity of the inorganic UV filter(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, relative to the total weight of the composition.
[0122] The quantity of the (a) inorganic UV filter(s) in the composition according to the present invention may be 35% by weight or less, preferably 30% by weight or less, and more preferably 25% by weight or less, relative to the total weight of the composition.
[0123] The quantity of the (a) inorganic UV filter(s) in the composition according to the present invention can be from 0.1% to 35% by weight, preferably from 0.5% to 30% by weight, and more preferably from 1% to 25% by weight, relative to the total weight of the composition.
[0124] In one embodiment, the quantity of the (a) inorganic UV filter(s) in the composition according to the present invention may be more than 6% by weight, preferably more than 7% by weight, and more preferably more than 8% by weight, relative to the total weight of the composition.
[0125] Thus, in this embodiment, the quantity of the (a) inorganic UV filter(s) in the composition according to the present invention can be more than 6% by weight and 30% by weight or less, preferably more than 7% by weight and 25% by weight or less, and more preferably more than 8% by weight and 20% by weight or less, relative to the total weight of the composition. Hydrophilic inorganic UV filter:
[0126] If the (a) inorganic UV filter is dispersed in an aqueous phase, when mixed with a biphasic or two-phase composition comprising the aqueous phase made solely from water and an oily phase made solely from isopropyl myristate, the weight ratio of the aqueous phase: the oily phase being 1:1, at room temperature (25 °C) under atmospheric pressure (101325 Pa), the inorganic UV filter can be considered to be hydrophilic.
[0127] The (al) hydrophilic inorganic UV filter may or may not have at least one hydrophilic coating.
[0128] The hydrophilic coating may comprise at least one hydrophilic compound selected from the group consisting of silica, hydrated silica, alumina, aluminum hydroxide, polysaccharides, alkanolamines, metal salts of polyphosphoric acid such as sodium hexametaphosphate, glycols such as butylene glycol, organic acids such as phytic acid, alkali metal hydroxides such as sodium hydroxide, and mixtures thereof.
[0129] It is preferable that the hydrophilic coating comprise at least one hydrophilic compound selected from the group consisting of silica, hydrated silica, alumina, aluminium hydroxide, glycols, organic acids, alkali metal hydroxide, and mixtures thereof.
[0130] The coated inorganic UV filter may have been prepared by subjecting the inorganic UV filter to one or more surface treatments of a chemical, electronic, mechanochemical and / or mechanical nature with any of the compounds as described above.
[0131] The hydrophilic inorganic UV filter (al) may be coated titanium dioxide:
[0132] of silica, such as the product “Sunveil” from Ikeda, and “Sunsil TIN 50” from Sunjin Chemical, and EusolexT-AVO from Merck;
[0133] of silica and iron oxide, such as the product "Sunveil F" from Ikeda;
[0134] of silica and alumina, such as the products “Microtitanium Dioxide MT 500 SA” of Tayca, “Tioveil” from Tioxide, and “Mirasun TiW 60” from Rhodia;
[0135] of hydrated silica and alumina, such as Tayca's "MT-100 SA" products;
[0136] of alumina, such as the products “Tipaque TTO-55 (B)” and “Tipaque TTO-55 (A)” from Ishihara, and “UVT 14 / 4” from Kemira;
[0137] of phytic acid and sodium hydroxide, such as Sensient's "UV TIO2 PHY" products;
[0138] of hydrated silica, such as the product “STR-100W” from Sakai Chemical Industry;
[0139] of hydrated silica, such as the product "GT-10W2" from Sakai Chemical Industry;
[0140] of triethanolamine, such as the product “STT-65-S” from Titan Kogyo; or
[0141] of sodium hexametaphosphate, such as the product "Microtitanium Dioxide MT 150 W » of Tayca.
[0142] The following coated TiO2 can also be used as a hydrophilic inorganic UV filter:
[0143] Silica (and) TiO2, such as Tayca's "MT-100 WP" product, with a primary particle mean diameter of 15 nm; or
[0144] Silica (and) Aluminium hydroxide (and) Alginic acid (and) TiO2, such as Tayca's "MT-100 AQ" product, with a primary particle mean diameter of 15 nm.
[0145] Uncoated titanium dioxide, as a hydrophilic inorganic UV filter, is, for example, those marketed by Tayca under the brands "Microtitanium Dioxide MT500B" or "Microtitanium Dioxide MT600B", by Degussa under the brand "P 25", by Wacker under the brand "Transparent Titanium Oxide PW", by Miyoshi Kasei under the brand "UFTR", by Tomen under the brand "ITS", and by Tioxide under the brand "Tioveil AQ".
[0146] Uncoated zinc oxide, as a hydrophilic inorganic UV filter, is, for example:
[0147] those marketed under the brand name “Z-cote” by Sunsmart;
[0148] those marketed under the "Nanox" brand by Elementis; or
[0149] those marketed under the brand name “Nanogard WCD 2025” by Nanophase Technologies.
[0150] It is preferable that the (al) hydrophilic inorganic UV filter be chosen from hydrophilic metal oxide, and more preferably hydrophilic TiO2.
[0151] It is preferable that the (al) hydrophilic inorganic UV filter be chosen from the group consisting of titanium dioxide (and) alumina, titanium dioxide (and) silica, titanium dioxide (and) hydrated silica, titanium dioxide (and) aluminium hydroxide (and) hydrated silica, titanium dioxide (and) butylene glycol (and) hydrated silica, titanium dioxide (and) phytic acid (and) sodium hydroxide, and one of their mixtures. Lipophilic organic UV filter:
[0152] If the (a) inorganic UV filter is dispersed in an oily phase made solely from isopropyl myristate, when mixed with a biphasic or two-phase composition comprising an aqueous phase made from water and the oily phase, with a weight ratio of 1:1, at room temperature (25 °C) under atmospheric pressure (101325 Pa), the inorganic UV filter can be considered to be lipophilic.
[0153] It is preferable that the (a2) lipophilic inorganic UV filter be chosen from among the lipophilic metal oxides, and more preferably lipophilic TiO2. The terms "lipophilic metal oxide" and "lipophilic TiO2" here refer, respectively, to the metal oxide with a lipophilic surface and to TiO2 with a lipophilic surface.
[0154] The (a2) lipophilic inorganic UV filter may have at least one lipophilic or hydrophobic coating. The lipophilic or hydrophobic coating may provide a lipophilic or hydrophobic surface.
[0155] It is preferable that the (a2) lipophilic inorganic UV filter be surface treated to have at least a lipophilic or hydrophobic coating.
[0156] The lipophilic or hydrophobic coating may include at least one lipophilic or hydrophobic compound selected from the group consisting of silicones, silanes, fatty acids or their salts (such as sodium, potassium, zinc, iron or aluminum salts), fatty alcohols, waxes such as beeswax, organic UV filters, (per)fluorinated compounds, and mixtures thereof.
[0157] It is preferable that the lipophilic or hydrophobic coating comprise at least one lipophilic or hydrophobic compound selected from the group consisting of silicones, silanes, fatty acids, and mixtures thereof.
[0158] It may be preferable for the lipophilic or hydrophobic coating to include at least one organic UV filter. As an organic UV filter in the coating, a dibenzoylmethane derivative such as butyl methoxydibenzoylmethane (Avobenzone) and 2,2'-Methylenebis[6-(2H-Benzotriazol-2-yl)-4-(l,l,3,3-Tetramethyl-Butyl)Phenol] (Methylene Bis-Benzotriazolyl Tetramethylbutylphenol) marketed under the name "TINOSORB M" by BASF may be preferable.
[0159] In a known manner, the silicones in the coating(s) may be organosilicon polymers or oligomers comprising a linear or cyclic and branched or crosslinked structure, of variable molecular weight, obtained by polymerization and / or polycondensation of suitable functional silanes and essentially composed of repeated main motifs in which the silicon atoms are linked to each other by oxygen atoms (siloxane bond), optionally substituted hydrocarbon radicals being directly linked to said silicon atoms by a carbon atom.
[0160] The term “silicones” also includes the silanes required for their preparation, in particular alkylsilanes.
[0161] The silicones used for the lipophilic or hydrophobic coating(s) may preferably be chosen from the group consisting of alkylsilanes, polydialkylsiloxanes and polyalkylhydrosiloxanes. More preferably still, the silicones are chosen from the group consisting of octyltrimethylsilanes, polydimethylsiloxanes and polymethylhydrosiloxanes.
[0162] Of course, the (a2) lipophilic inorganic UV filter made, for example, of metal oxides may, before their treatment with silicones, have been treated with other surfactants, in particular with cerium oxide, alumina, silica, aluminium compounds, silicon compounds, or mixtures thereof.
[0163] The coated inorganic UV filter may have been prepared by subjecting the inorganic UV filter to one or more surface treatments of a chemical, electronic, mechanochemical and / or mechanical nature with any of the compounds as described above.
[0164] The (a2) lipophilic inorganic UV filter may be coated titanium dioxide:
[0165] of alumina and aluminum stearate, such as the product “Microtitanium Dioxide MT 100 T, MT 100 TX, MT 100 Z or MT-01” from Tayca, the products “Solaveil CT-300”, “Solaveil CT-200”, “Solaveil CT-12 W”, “Solaveil CT-60 W” and “Solaveil CT 100” from Croda
[0166] of alumina and aluminum laurate, such as the product "Microtitanium Dioxide MT 100 S" from Tayca;
[0167] of iron oxide and iron stearate, such as the product "Microtitanium Dioxide MT 100 F" from Tayca;
[0168] of zinc oxide and zinc stearate, such as Tayca's "BR351" product;
[0169] of silica and alumina and treated with a silicone, such as the products “Microtitanium Dioxide MT 600 SAS”, “Microtitanium Dioxide MT 500 SAS” and “Microtitanium Dioxide MT 100 SAS” from Tayca;
[0170] of silica, alumina and aluminium stearate and treated with a silicone, such as the product "STT-30-DS" from Titan Kogyo;
[0171] of silica and treated with a silicone, such as Kemira's "UV-Titan X 195" product;
[0172] of alumina and treated with a silicone, such as the products “Tipaque TTO-55 (S)” from Ishihara or “UV Titan M 262” from Kemira; Or
[0173] of stearic acid, such as the product “Tipaque TTO-55 (C)” from Ishihara and “MT-500CST” from Tayca.
[0174] Another titanium dioxide treated with a silicone is preferably TiO2 treated with octyltrimethylsilane and having an average size of individual particles of 25 and 40 nm, such as that marketed under the brand name "T 805" by Degussa Silices, TiO2 treated with a polydimethylsiloxane and having an average size of individual particles of 21 nm, such as that marketed under the brand name "70250 Cardre UF TiO2Si3" by Cardre, and TiO2 anatase / rutile treated with a polydimethylhydrosiloxane and having an average size of individual particles of 25 nm, such as that marketed under the brand name "Microtitanium Dioxide USP carbonate Hydrophobie" by Color Techniques.
[0175] Preferably, the following coated TiO2 can be used as a (a2) lipophilic inorganic UV filter:
[0176] Stearic acid (and) Aluminium hydroxide (and) TiO2, such as Tayca's "MT-100 TV" product, with an average primary particle diameter of 15 nm, and Tayca's "MT-N1" and Titan Kogyo's "ST-485SA15", with an average primary particle diameter of 8 nm;
[0177] Dimethicone (and) Stearic acid (and) Aluminium hydroxide (and) TiO2, such as the product "SA-TTO-S4" by Miyoshi Kasei, with a mean primary particle diameter of 15 nm;
[0178] Dimethicone (and) Silica (and) Aluminium Hydroxide (and) TiO2, such as Tayca's "MT-Y02" and "MT-Y-110 M3S", with a primary particle mean diameter of 10 nm;
[0179] Dimethicone (and) Aluminium Hydroxide (and) TiO2, such as the product "SA-TTO-S3" from Miyoshi Kasei, with a mean primary particle diameter of 15 nm; or
[0180] Dimethicone (and) Alumina (and) TiO2, such as the product "UV TITAN M170" from Sachtleben, with a mean primary particle diameter of 15 nm.
[0181] In terms of UV filtering capacity, TiO2 coated with at least one organic UV filter may be more preferable. For example, Avobenzone (and) Stearic Acid (and) Aluminum Hydroxide (and) TiO2, such as Tayca's "HXMT-100ZA" product, with an average primary particle diameter of 15 nm, may be used.
[0182] Coated zinc oxide, as a (a2) lipophilic inorganic UV filter, is for example:
[0183] those marketed under the brand name "Zinc Oxide CS-5" by Toshiba (ZnO coated with polymethylhydrosiloxane);
[0184] those marketed under the brand name "Nanogard Zinc Oxide FN" by Nanophase Technologies (in 40% dispersion in Finsolv TN alkyl benzoate, C12-C15);
[0185] those marketed under the brand name “Daitopersion Zn-30” and “Daitopersion Zn-50” by Daito (dispersions in oxyethylenated polydimethylsiloxane / cyclopolymethylsiloxane comprising 30% or 50% of zinc nanooxides coated with silica and polymethylhydrosiloxane);
[0186] those marketed under the brand name "NFD Ultrafine ZnO" by Daikin (ZnO coated with perfluoroalkyl phosphate and a perfluoroalkylethyl copolymer dispersed in cyclopentasiloxane);
[0187] those marketed under the brand name "SPD-Z1" by Shin-Etsu (ZnO coated with a silicone grafted acrylic polymer dispersed in cyclodimethylsiloxane);
[0188] those marketed under the brand name "Escol Z100" by ISP (alumina-treated ZnO dispersed in an ethylhexyl methoxycinnamate / PVP-hexadecene / methicone copolymer mixture);
[0189] those marketed under the brand name "Fuji ZnO-SMS-10" by Fuji Pigment (ZnO coated with silica and polymethylsilsesquioxane); and those marketed under the brand name "Nanox Gel TN" by Elementis (ZnO dispersed at 55% in Ci2-Ci5 alkyl benzoate with a hydroxystearic acid polycondensate);
[0190] those marketed under the brand name "FINEX-50-OTS" by Sakai Chemical (triethoxycaprylylsilane-coated ZnO); or
[0191] those marketed under the brand name FINEX-52W-LP2" by Sakai Chemical (ZnO coated with hydrated silica and hydrogenodimethicone).
[0192] Preferably the (a2) lipophilic inorganic UV filter is selected from the group consisting of titanium dioxide (and) alumina (and) aluminium stearate, titanium dioxide (and) alumina (and) aluminium stearate (and) simethicone, titanium dioxide (and) alumina (and) stearic acid, titanium dioxide (and) alumina (and) simethicone, titanium dioxide (and) aluminium hydroxide (and) triethoxycaprylylsilane, titanium dioxide (and) aluminium hydroxide (and) dimethicone (and) hydrogenodimethicone, titanium dioxide (and) aluminium hydroxide (and) stearic acid, titanium dioxide (and) silica (and) hydrogenodimethicone, titanium dioxide (and) hydrated silica (and) hydrogenodimethicone), and a mixture thereof. Amphiphilic inorganic UV filter:
[0193] If the (a) inorganic UV filter is dispersed both in an aqueous phase made solely from water and in an oily phase made solely from isopropyl myristate and is adsorbed at the interface between the aqueous phase and the oily phase, with or without emulsion formation, when mixed with a biphasic or two-phase composition comprising the aqueous phase and the oily phase, with the weight ratio of the aqueous phase: the oily phase being 1:1, at room temperature (25 °C) under atmospheric pressure (101325 Pa), the inorganic UV filter can be considered to be amphiphilic.
[0194] It is preferable that the (a3) amphiphilic inorganic UV filter be chosen from among amphiphilic metal oxides, and more preferably amphiphilic TiO2. The terms "amphiphilic metal oxide" and "amphiphilic TiO2" here refer, respectively, to a metal oxide with an amphiphilic surface and a TiO2 with an amphiphilic surface.
[0195] The (a3) amphiphilic inorganic UV filter may have at least one amphiphilic coating. The amphiphilic coating may confer an amphiphilic surface.
[0196] It is preferable that the (a3) amphiphilic inorganic UV filter be surface treated to have at least an amphiphilic coating.
[0197] The amphiphilic coating may comprise at least one amphiphilic material, preferably at least one surfactant, more preferably at least one anionic surfactant and / or at least one non-ionic surfactant which may have an HLB value greater than or equal to 8 at 25 °C.
[0198] For the purposes of the present invention, "surfactant" means an amphiphilic compound, that is, a compound which has two parts of different polarities. Generally, one is lipophilic (soluble or dispersible in an oily phase). The other is hydrophilic (soluble or dispersible in water).
[0199] Surfactants, particularly nonionic surfactants, can be characterized by their HLB (hydrophilic-lipophilic balance) value, the HLB being the ratio of the hydrophilic to the lipophilic portion of the molecule. The term "HLB" is well known to those skilled in the art and is described, for example, in "The HLB System: A Time-Saving Guide to Emulsifier Selection" (published by ICI Americas Inc.; 1984). The HLB of the surfactant(s) used according to the present invention can be determined via the Griffin method or the Davies method.
[0200] In one embodiment, the amphiphilic coating may comprise:
[0201] (i) at least one anionic surfactant selected from alkyl phosphates and their salts, preferably from C8-C26 alkyl monophosphates and their salts, more preferably from C2-C22 alkyl monophosphates and their salts, and even more preferably from the group consisting of cetyl phosphate, cetyl potassium phosphate and mixtures thereof, and in particular cetyl phosphate;
[0202] and / or
[0203] (ii) at least one non-ionic surfactant, which may have an HLB value at 25 °C greater than or equal to 8, preferably greater than or equal to 10, selected from:
[0204] - esters of a fatty acid, preferably a C8-C24 fatty acid, and more preferably of a fatty acid in Ci6-C22, and (poly)oxyalkylated sorbitol esters, in particular oxyethylated and / or oxypropylened which may comprise from 20 to 200 oxyethylene and / or oxypropylene motifs such as polysorbate-20, polysorbate-40, polysorbate-60, polysorbate-65, polysorbate-80 and polysorbate-85;
[0205] - esters of a C12-C20 fatty acid and a polyglycerol comprising 3 to 12 glycerol groups, preferably 6 to 10 glycerol groups such as polyglyceryl-6 stearate, polyglyceryl-6 isostearate, polyglyceryl-6 laurate, polyglyceryl-6 myristate, polyglyceryl-6 oleate, polyglyceryl-10 stearate and polyglyceryl-10 isostearate, polyglyceryl-10 laurate, polyglyceryl-10 myristate and polyglyceryl-10 oleate; and
[0206] - their mixtures,
[0207] preferably (i) at least one anionic surfactant selected from alkyl phosphates and their salts, preferably from C8-C26 alkyl monophosphates and their salts, more preferably from Ci2-C22 alkyl monophosphates and their salts, even more preferably from the group consisting of cetyl phosphate, potassium cetyl phosphate, and a mixture thereof, and in particular cetyl phosphate.
[0208] The amphiphilic coating may further comprise at least one hydrophilic compound selected from the group consisting of silica, hydrated silica, alumina and aluminum hydroxide: at least one lipophilic compound which may be selected from the group consisting of stearic acid, and isostearic acid: or mixtures thereof, preferably at least one hydrophilic compound selected from the group consisting of silica, hydrated silica, alumina, and aluminum hydroxide, and more preferably silica.
[0209] The coated inorganic UV filter may have been prepared by subjecting the inorganic particles to one or more surface treatments of a chemical, electronic, mechanochemical and / or mechanical nature with any of the compounds as described above.
[0210] The coated inorganic particle may have been prepared by first treating the surface of the particle to make it hydrophobic, and then treating it with a surfactant to make it hydrophilic.
[0211] It is preferable that the (a3) amphiphilic inorganic UV filter be chosen from:
[0212] cetyl phosphate and silica coated titanium oxides, such as the product " EusolexT-EASY » from Merck;
[0213] titanium oxides coated with polyglyceryl-10 oleate and stearic acid, such as Tayca's "MTY-200STW";
[0214] zinc oxides coated with polyglyceryl-10 oleate and isostearic acid, such as Tayca's "MZY-505EXW";
[0215] titanium oxides coated with polysorbate 80 and isostearic acid, such as Tayca's "MT-10EXW"; and
[0216] zinc oxides coated with polysorbate 80 and isostearic acid, such as Tayca's "MZY-304EXW".
[0217] In particular, it is preferable that the (a3) amphiphilic inorganic UV filter be titanium dioxide (and) silica (and) cetyl phosphate, such as the product sold by Merck under the name EusolexT-EASY. (Thickening)
[0218] The composition according to the present invention comprises (b) at least one thickener selected from (b1) (meth)acrylic-based thickeners, (b2) cellulose-based thickeners, and (b3) mixtures thereof. Two or more different types of thickeners may be used in combination. Thus, a single type of thickener or a combination of different types of thickeners may be used.
[0219] The quantity of (b) thickener(s) in the composition according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more, and more preferably 0.1% by weight or more, relative to the total weight of the composition.
[0220] The quantity of (b) thickener(s) in the composition according to the present invention may be 10% by weight or less, preferably 5% by weight or less, and more preferably 1% by weight or less, relative to the total weight of the composition.
[0221] The quantity of (b) thickener(s) in the composition according to the present invention may be from 0.01% to 10% by weight, preferably from 0.05% to 5% by weight and more preferably from 0.1% to 1% by weight, relative to the total weight of the composition.
[0222] The weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition according to the present invention may be 0.001 or more, preferably 0.005 or more, and more preferably 0.01 or more.
[0223] The weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition according to the present invention may be 0.001 or more and less than 0.2, preferably from 0.005 to 0.15, and more preferably from 0.01 to 0.1.
[0224] In one embodiment, the weight ratio of the quantity of the (meth)acrylic-based thickener(s) to the quantity of the inorganic UV filter(s) in the composition according to the present invention may be 0.04 or less, preferably 0.03 or less, and more preferably 0.02 or less. Conversely, the weight ratio of the quantity of the (meth)acrylic-based thickener(s) to the quantity of the organic UV filter(s) in the composition according to the present invention may be 0.001 or more, preferably 0.005 or more, and more preferably 0.01 or more. Thus, in this embodiment, the weight ratio of the quantity of the (bl) thickener(s) based on (meth)acrylic / the quantity of the (a) organic UV filter(s) in the composition according to the present invention can be from 0.001 to 0.04, preferably from 0.005 to 0.03, and more preferably from 0.01 to 0.02.
[0225] In one embodiment, the weight ratio of the quantity of (b2) cellulose-based thickener(s) to the quantity of (a) inorganic UV filter(s) in the composition according to the present invention may be less than 0.2, preferably 0.15 or less, and more preferably 0.1 or less. Conversely, the weight ratio of the quantity of (b2) cellulose-based thickener(s) to the quantity of (a) inorganic UV filter(s) in the composition according to the present invention may be 0.01 or more, preferably 0.03 or more, and more preferably 0.05 or more. Thus, in this embodiment, the weight ratio of the quantity of the (b2) cellulose-based thickener(s) to the quantity of the (a) inorganic UV filter(s) in the composition according to the present invention may be 0.01 or more and less than 0.2, preferably from 0.03 to 0.15, and more preferably from 0.05 to 0.1. (Meth)acrylic-based thickener:
[0226] The composition according to the present invention may comprise (bl) at least one (meth)acrylic-based thickener. Only one type of (meth)acrylic-based thickener may be used, but two or more different types of (meth)acrylic-based thickeners may be used in combination.
[0227] The term "(meth)acrylic based thickener" as used herein refers to polymers based on one or more (meth)acrylic acid monomers and / or (meth)acrylate monomers.
[0228] The (bl) thickener based on (meth)acrylic can be selected from (meth)acrylic polymers.
[0229] Preferably, the (meth)acrylic polymer is a hydrophilic (meth)acrylic polymer. The expression "hydrophilic (meth)acrylic polymer" here means a non-hydrophobic and non-amphiphilic acrylic polymer.
[0230] The (meth)acrylic polymer may have a number average molecular weight ranging from 1000 to 20,000,000 g / mol, preferably ranging from 20,000 to 5,000,000 g / mol and more preferably from 100,000 to 1,500,000 g / mol.
[0231] The (meth)acrylic polymer may be crosslinked or non-crosslinked.
[0232] According to the present invention, the (bl) thickener based on (meth)acrylic is a (meth)acrylic polymer comprising at least one monomer bearing at least one sulfonic group, preferably a sulfonic group. Thus, the (bl) thickener based on (meth)acrylic is selected from (meth)acrylic polymers comprising at least one repeating unit bearing at least one sulfonic group, preferably a sulfonic group.
[0233] The (meth)acrylic polymer comprising at least one monomer bearing at least one sulfonic group may be a homopolymer which can be obtained from an ethylenically unsaturated monomer bearing at least one sulfonic group, which may be in free form or in partially or totally neutralized form.
[0234] Preferably, the (meth)acrylic polymer comprising at least one monomer bearing at least one sulfonic group is partially or totally neutralized with a mineral base (sodium hydroxide, potassium hydroxide, or aqueous ammonia) or an organic base such as monoethanolamine, diethanolamine, triethanolamine, an aminomethylpropanediol, N-methylglucamine, basic amino acids, for example, arginine and lysine, and mixtures of these compounds. The (meth)acrylic polymer comprising at least one monomer bearing at least one sulfonic group is generally neutralized.
[0235] In the present invention, the term “neutralized” refers to polymers that are totally or almost totally neutralized, i.e., neutralized to at least 90%.
[0236] The monomer bearing at least one sulfonic group may be selected from vinylsulfonic acid, styrenesulfonic acid, (meth)acrylamido(Ci-C22)alkylsulfonic acids, N-(Cr C22)alkyl(meth)acrylamido(Ci-C22)alkylsulfonic acids such as undecylacrylamidomethanesulfonic acid, and also their partially or totally neutralized forms, and mixtures thereof.
[0237] According to a preferred embodiment of the present invention, the monomer bearing at least one sulfonic acid group is selected from (meth)acrylamido(Ci-C22)alkylsulfonic acids, for example acrylamidomethanesulfonic acid, acrylamidoethanesulfonic acid, acrylamidopropanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methacrylamido-2-methylpropanesulfonic acid, 2-acrylamido-n-butanesulfonic acid, 2-acrylamido-2,4,4-trimethylpentanesulfonic acid, 2-Methacrylamidododecylsulfonic acid and 2-acrylamido-2,6-dimethyl-3-heptanesulfonic acid, and also their partially or totally neutralized forms, and mixtures thereof.
[0238] In particular, 2-acrylamido-2-methylpropanesulfonic acid (AMPS) is used, as well as its partially or totally neutralized forms.
[0239] According to the present invention, the 2-acrylamido-2- acid monomer methylpropanesulfonic acid (AMPS) preferably corresponds to the following general formula (1):
[0240] wherein X+ denotes a cationic counterion, in particular an alkali metal or an alkaline earth metal, or an ammonium, preferably an alkali metal or an ammonium ion; Ri denotes a hydrogen atom or a linear or branched Ci-C6 alkyl radical such as methyl, and Ri preferably denotes a hydrogen atom.
[0241] When the (meth)acrylic polymer is crosslinked, the crosslinking agents can be chosen from among the polyolefinically unsaturated compounds commonly used for crosslinking polymers obtained by radical polymerization.
[0242] Examples of crosslinking agents that may be cited include divinylbenzene, diallyl ether, dipropylene glycol diallyl ether, polyglycol diallyl ether, triethylene glycol divinyl ether, hydroquinone diallyl ether, ethylene glycol or tetraethylene glycol di(meth)acrylate, trimethylolpropane triacrylate, methylenebisacrylamide, methylenebismethacrylamide, triallylamine, triallyl cyanurate, diallyl maleate, tetraallylethylenediamine, tetraallyloxyethane, trimethylolpropane diallyl ether, allyl (meth)acrylate, allylic ethers of sugar alcohols, or other allyl or vinyl ethers of polyfunctional alcohols, as well as allylic esters of phosphoric and / or vinylphosphonic acid derivatives, or mixtures of these compounds.
[0243] According to a preferred embodiment of the present invention, the crosslinking agent is selected from methylenebisacrylamide, allyl methacrylate, and trimethylolpropane triacrylate (TMPTA). The degree of crosslinking generally ranges from 0.01 mol% to 10 mol%, and more particularly from 0.2 mol% to 2 mol%, relative to the polymer.
[0244] The homopolymer of monomers bearing at least one sulfonic group can be crosslinked with one or more crosslinking agents.
[0245] These homopolymers are generally cross-linked and neutralized, and they can be obtained according to the preparation process comprising the following steps:
[0246] (a) the monomer such as 2-acrylamido-2-methylpropanesulfonic acid in the form free is dispersed or dissolved in a solution of tert-butanol or water and tert-butanol;
[0247] (b) the monomer solution or dispersion obtained in (a) is neutralized with a or several mineral or organic bases, preferably aqueous ammonia NH3, in a quantity allowing to obtain a degree of neutralization of the sulfonic acid functions of the polymer ranging from 90% to 100%;
[0248] (c) the crosslinking monomer(s) is / are added to the solution or to the dispersion obtained in (b);
[0249] (d) a standard free radical polymerization is carried out in the presence of free radical initiators at a temperature ranging from 10 to 150 °C; the polymer precipitates in the tert-butanol-based solution or dispersion.
[0250] Preferred AMPS homopolymers are generally characterized in that they comprise, randomly distributed:
[0251] a) from 90% to 99.9% by weight of motifs of general formula (2) below: H2 (2) C z / \ Z CH CH3 o 7 N----^CH2SO3X+ (î|) CHA
[0252] wherein X+ denotes a proton, an alkali metal cation, an alkaline earth metal cation or the ammonium ion, not more than 10% by mole of the X+ cations being possibly H+ protons; and
[0253] b) from 0.01% to 10% by weight of crosslinking motifs from at least one monomer containing at least two olefinic double bonds; the weight proportions being defined in relation to the total weight of the polymer.
[0254] The homopolymers most particularly preferred comprise 98% to 99.5% by weight of formula motifs (2) and 0.2% to 2% by weight of crosslinking motifs.
[0255] One such polymer which may be cited in particular is the crosslinked and neutralized 2-acrylamido-2-methylpropanesulfonic acid homopolymer sold by Clariant under the trade name Hostacerin AMPS (CTFA name: ammonium polyacryldimethyltauramide) or Simulgel 800 (CTFA name: ammonium polyacryloyldimethyl taurate) sold by Seppic.
[0256] Other (meth)acrylic polymers comprising at least one monomer bearing at least one sulfonic group include, in particular, acryloyldimethyltaurate polymer, preferably acryloyldimethyltaurate copolymer. Acryloyldimethyltaurate polymer is a polymer comprising acryloyldimethyltaurate as a monomer, and acryloyldimethyltaurate copolymer is a copolymer comprising acryloyldimethyltaurate as a monomer and one or more other monomers. An example of an acryloyldimethyltaurate copolymer is an acryloyldimethyltaurate-vinylpyrrolidone (VP) copolymer such as ammonium acryloyldimethyltaurate / VP copolymer, sold under the name Aristoflex AVC by Clariant.
[0257] In particular, other (meth)acrylic polymers comprising at least one monomer bearing at least one sulfonic group may be cited as acrylamide / AMPS copolymers.
[0258] According to this embodiment, the (meth)acrylic polymer is a copolymer crosslinked anionic formed from motifs derived from the reaction between (i) acrylamide (monomer 1), (ii) 2-acrylamido-2-methylpropanesulfonic acid, and (iii) at least one unsaturated polyolefin compound (monomer 3), constituting here the crosslinking agent.
[0259] The crosslinked anionic copolymers used in the context of the present invention are products already known per se and their preparation has been described in particular in patent application EP-A-0 503 853.
[0260] The above copolymers can thus be obtained in a conventional manner according to the emulsion polymerization technique from three different comonomers included in their constitution.
[0261] The unsaturated polyolefin monomers used as crosslinking agents for the preparation of the copolymers according to the present invention are preferably selected from the group consisting of methylenebisacrylamide, allylsucrose, and pentaerythritol. More preferably, methylenebisacrylamide is used.
[0262] Preferably, said unsaturated polyolefinic compound is present in the copolymer at a concentration of between 0.06 and 1 mmol per mole of the monomer motifs as a whole.
[0263] The ratio, expressed as a mole percent, between acrylamide and AMPS is preferably between 85 / 15 and 15 / 85, advantageously between 70 / 30 and 30 / 70, even more preferably between 65 / 35 and 35 / 65, and even more particularly between 60 / 40 and 40 / 60. Furthermore, AMPS is generally at least partially neutralized in the form of a salt, for example with sodium hydroxide, with hydroxide of potassium or with a low molecular weight amine such as triethanolamine, or mixtures thereof.
[0264] A crosslinked copolymer that is particularly preferred in the context of implementing the present invention corresponds to that prepared in Example 1 of patent application EP-A-0 503 853 mentioned above, and which is in the form of a water-in-oil inverse emulsion. More specifically, this copolymer is formed from 60 mol% acrylamide and 40 mol% the sodium salt of AMPS, and it is crosslinked with methylenebisacrylamide in a proportion of 0.22 mmol per mole of the total monomer mixture. The final water-in-oil inverse emulsion preferably contains about 40 wt% of the crosslinked copolymer as defined above and about 4 wt% of an ethoxylated fatty alcohol with an HLB of about 12.5.
[0265] The crosslinked copolymers which are more particularly used according to the present invention are the products sold under the names Sepigel 305 (CTFA name: polyacrylamide / C13-14 isoparaffin / Laureth 7) or Simulgel 600 (CTFA name: acrylamide / sodium acryloyldimethyltaurate copolymer / isohexadecane / polysorbate 80) sold by the company SEPPIC, or Simulgel EG (CTFA name: sodium acrylate / sodium acryloyldimethyltaurate copolymer / isohexadecane / polysorbate 80).
[0266] As other preferable examples of the (meth)acrylic copolymer comprising at least one monomer bearing at least one sulfonic group, we may cite AMPS copolymers comprising at least one monomer of 2-acrylamido-2-methylpropanesulfonic acid (AMPS), at least one monomer with a hydrophobic group, and at least one ethylenically unsaturated monomer which does not include any hydrophobic group.
[0267] In the context of the present invention, the expression "hydrophobic group" means a hydrocarbon-based fatty chain, branched or unbranched, saturated or unsaturated, comprising from 6 to 50 carbon atoms, preferably from 8 to 40 carbon atoms, and more preferably from 10 to 30 carbon atoms.
[0268] In this embodiment, the 2-acrylamido-2-methylpropanesulfonic acid (AMPS) monomers represented by the general formula (1) above may preferably be used.
[0269] The above AMPS copolymer comprises at least one monomer with a hydrophobic group which is preferably an ethylenically unsaturated monomer comprising at least one hydrocarbon-based fatty chain comprising 6 to 50 carbon atoms, preferably 8 to 40 and more particularly 10 to 30 carbon atoms.
[0270] The monomer with a hydrophobic group is preferably chosen from the (meth)acrylates or (meth)acrylamides of the following formula (3):
[0271] in which Ri denotes a hydrogen atom or a linear or branched Ci-C6 alkyl radical, preferably methyl; Y denotes O or NH; R2 denotes a hydrocarbon-based radical comprising from 6 to 50 carbon atoms and more preferably from 8 to 40 carbon atoms and even more preferably from 10 to 30 carbon atoms; and x denotes a number from 0 to 100.
[0272] According to a particular embodiment of the present invention, in formula (3), Y denotes an oxygen atom.
[0273] According to a particular embodiment of the present invention, in formula (3), the Ri group represents a methyl.
[0274] According to a particular embodiment of the present invention, x represents an integer between 3 and 25, and x is preferably equal to 4.
[0275] According to a particular embodiment of the present invention, in formula (3), the group R2 represents an alkyl radical comprising 12 to 18 carbon atoms.
[0276] According to a particular embodiment of the present invention, the hydrophobic monomer of formula (3) is tetraethoxylated lauryl methacrylate (4EO), corresponding to the compound of formula (3) in which the group Y designates O, the group R2 represents an alkyl radical comprising 12 carbon atoms and x is equal to 4.
[0277] Preferably, the monomer with a hydrophobic group is tetraethoxylated lauryl methacrylate.
[0278] According to a particular embodiment of the present invention, the above AMPS copolymer may comprise at least one monomer of formula (3) in which x is equal to 0, Y representing an oxygen atom, the Ri group representing a methyl group and the R2 group representing an alkyl radical comprising 12 to 18 carbon atoms.
[0279] In this embodiment, the monomer with a hydrophobic group is preferably lauryl methacrylate.
[0280] Preferably, the above AMPS copolymer comprises, as monomers with a hydrophobic group, lauryl methacrylate and tetraethoxylated lauryl methacrylate.
[0281] The above AMPS copolymer also comprises at least one ethylenically unsaturated monomer, which does not comprise any hydrophobic group, preferably corresponding to the following general formula (4): X1 O [q---r2 r3
[0282] in which Ri denotes a hydrogen atom or a linear or branched Ci-C4 alkyl radical> Ri preferably denotes a hydrogen atom, R2 denotes a linear or branched C1-C4 alkyl radical and R3 denotes a linear or branched Ci-C4 alkyl radical and R2 and R3 preferably denote a methyl.
[0283] The ethylenically unsaturated monomer which does not include any hydrophobic group is selected from (meth)acrylamides such as acrylamide, (meth)acrylic acids and their (meth)acrylate esters, such as 2-hydroxyethyl acrylate, vinylpyrrolidones, N-(Ci-C4)alkylacrylamides, and N,N-di(Cr C4)alkylacrylamides such as N,N-dimethylacrylamide.
[0284] Preferably, the ethylenically unsaturated monomer which does not include any hydrophobic group is N,N-dimethylacrylamide.
[0285] Preferably, the above AMPS copolymer is selected from copolymers of 2-acrylamido-2-methylpropanesulfonic acid, preferably fully salified, N,N-dimethylacrylamide, tetraethoxylated lauryl methacrylate and lauryl methacrylate, preferably crosslinked, such as, for example, the copolymer sold under the name Sepimax Zen by SEPPIC, bearing the INCI name Polyacrylate crosspolymer-6.
[0286] In one embodiment of the present invention, the (bl) thickener based on (meth)acrylic can be selected from (meth)acrylic polymers comprising at least one monomer bearing at least one sulfonic group, and at least one monomer of N,N-di(Ci-C4)alkylacrylamide, preferably (meth)acrylic polymers comprising at least one monomer bearing at least one sulfonic group, at least one monomer of N,N-di(Ci-C4)alkylacrylamide, and at least one monomer represented by the following formula (3):
[0287] in which Ri denotes a hydrogen atom or a linear or branched Ci-C6 alkyl radical, preferably methyl; Y denotes O or NH; R2 denotes a hydrocarbon-based radical comprising from 6 to 50 carbon atoms and more preferably from 8 to 40 carbon atoms and even more preferably of 10 to 30 carbon atoms; and x denotes a number from 0 to 100, and more preferably optionally crosslinked copolymers of 2-acrylamido-2-methylpropanesulfonic acid, N,N-dimethylacrylamide, tetraethoxylated lauryl methacrylate and lauryl methacrylate.
[0288] The quantity of the (meth)acrylic-based thickener(s) in the composition according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more, and more preferably 0.1% by weight or more, relative to the total weight of the composition.
[0289] The quantity of the (meth)acrylic-based thickener(s) in the composition according to the present invention may be 10% by weight or less, preferably 5% by weight or less, and more preferably 1% by weight or less, relative to the total weight of the composition.
[0290] The quantity of the (meth)acrylic-based thickener(s) in the composition according to the present invention can be from 0.01% to 10% by weight, preferably from 0.05% to 5% by weight, and more preferably from 0.1% to 1% by weight, relative to the total weight of the composition. Cellulose-based thickener:
[0291] The composition according to the present invention may comprise (b2) at least one cellulose-based thickener. Only one type of cellulose-based thickener may be used, but two or more different types of cellulose-based thickeners may be used in combination.
[0292] The expression "cellulose-based thickener" (cellulosic thickening agent) as used herein refers to cellulose-based polymers which can be used to increase viscosity.
[0293] Non-limiting examples of (b2) cellulose-based thickeners include, for example, cellulose and modified cellulosic compounds such as carboxymethylcellulose, sodium carboxymethylcellulose or cellulose gum, carboxymethyl hydroxyethylcellulose, cellulose acetate propionate carboxylate, hydroxyethylcellulose, hydroxyethyl ethylcellulose, hydroxypropylcellulose, hydroxypropyl methylcellulose, methyl hydroxyethylcellulose, microcrystalline cellulose, sodium cellulose sulfate, and mixtures thereof. Alkyl-substituted celluloses are also useful here. In these polymers, a certain portion of the hydroxyl groups of the cellulosic polymer are hydroxyalkylated (preferably hydroxyethylated or hydroxypropylated) to form hydroxyalkylated cellulose, which is then further modified with a straight-chain or C10-30 branched-chain alkyl group via an ether bond.Typically, these polymers are straight-chain or branched C1-C3-chain alcohol ethers with hydroxyalkylcelluloses. Examples of useful alkyl groups here include those chosen from the group consisting of stearyl, isostearyl, lauryl, myristyle, cetyl, isocetyl, cocoyl (e.g., alkyl groups derived from coconut oil alcohols), palmityl, oleyl, linoleyl, linoleyl, ricinoleyl, behenyl, and mixtures thereof.
[0294] It is preferable that the (b2) cellulose-based thickener be selected from the group consisting of microcrystalline cellulose, carboxymethylcellulose, sodium carboxymethylcellulose or cellulose gum, carboxymethyl hydroxyethylcellulose, hydroxyethyl cellulose, hydroxyethyl ethylcellulose, hydroxypropylcellulose, hydroxypropyl methylcellulose, hydroxyethylmethylcellulose, sodium cellulose sulfate, and a mixture thereof.
[0295] It is more preferable that the (b2) cellulose-based thickener be chosen from the group consisting of microcrystalline cellulose, cellulose gum and a mixture thereof.
[0296] There are no limitations regarding the microcrystalline cellulose to be used in the composition according to the present invention.
[0297] In one embodiment, the microcrystalline cellulose may be in particle form, and the particle preferably has an average particle size of 50 µm or less, preferably 10 µm or less, and more preferably less than 1 µm. Average particle size here means the average particle size by volume. AvicelPC-611, CL-611, and RC-591 (DuPont) may be used as microcrystalline cellulose in particle form.
[0298] In another embodiment, the microcrystalline cellulose may be in the form of a fiber, and the fiber preferably has an average fiber diameter of 2 to 5 nm. The average fiber diameter means the average fiber diameter by volume. RHEOCRYSTAC-2SP (DKS Co. Ltd.) may be used as a microcrystalline cellulose fiber.
[0299] Microcrystalline cellulose can be an isolated crystalline portion of wood pulp cellulose fibres which can be used in colloidal form (i.e. co-treated with a soluble hydrocolloid) or non-colloidal form.
[0300] In one embodiment, microcrystalline cellulose can be used in colloidal form having a particle size <1 µm, i.e., a rod-like particle shape. The initial viscosity is preferably chosen in the range of 30 to 150 cps as a dispersion of 1 to 3 wt%. More preferably, the microcrystalline cellulose also has a sieved fraction of +60 mesh not exceeding 0.1 wt% and of +325 mesh not exceeding 75 wt%.
[0301] Microcrystalline cellulose can form a three-dimensional network of insoluble, rod-like particles smaller than one micron, which would strengthen the The composition according to the present invention exhibits physical stability under zero or low shear stress (e.g., in a container). However, when a relatively high shear stress is applied to the composition according to the present invention, the three-dimensional network can collapse, imparting low viscosity to the composition. This property is preferable for spraying the composition according to the present invention.
[0302] Microcrystalline cellulose can be used alone or in a mixture with sodium carboxymethylcellulose (cellulose gum). Microcrystalline cellulose and carboxymethylcellulose can interact with each other through hydrogen bonding.
[0303] Microcrystalline cellulose is commercially available. Examples of commercially available products including microcrystalline cellulose include AvicelPC-611, CL-611 or RC-591 (DuPont) comprising microcrystalline cellulose and sodium carboxymethylcellulose (cellulose gum), or RHEOCRYSTAC-2SP (DKS Co. Ltd.) (aqueous dispersion of 2% by weight of microcrystalline cellulose).
[0304] AvicelPC-611 and CL-611 contain microcrystalline cellulose and sodium carboxymethylcellulose in a ratio of 85 / 15 by weight. AvicelRC-591 contains microcrystalline cellulose and sodium carboxymethylcellulose in a ratio of 89 / 11 by weight.
[0305] The quantity of the (b2) cellulose-based thickener(s) in the composition according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more, and more preferably 0.1% by weight or more, relative to the total weight of the composition.
[0306] The quantity of the (b2) cellulose-based thickener(s) in the composition according to the present invention may be 15% by weight or less, preferably 10% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition.
[0307] The quantity of the (b2) cellulose-based thickener(s) in the composition according to the present invention can be from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight, and more preferably from 0.1% to 5% by weight, relative to the total weight of the composition. (Oil)
[0308] The composition according to the present invention may comprise (c) at least one oil. If two or more oils are used, they may be identical or different.
[0309] Here, "oil" means a fatty compound or a fatty substance that is in the form of a liquid or a paste (not solid) at room temperature (25 °C) under atmospheric pressure (760 mmHg). As oils, those generally used in Cosmetic oils can be used alone or in combination. These oils can be volatile or non-volatile.
[0310] The (c) oil may be a non-polar oil such as a hydrocarbon oil, a silicone oil or the like; a polar oil such as a vegetable or animal oil and an ester oil or an ether oil; or a mixture thereof.
[0311] The (c) oil may be selected from the group consisting of oils of vegetable or animal origin, synthetic oils, silicone oils, hydrocarbon oils and fatty alcohols.
[0312] Examples of vegetable oils include apricot oil, linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.
[0313] Examples of animal oils include, for example, squalene and squalane.
[0314] Examples of synthetic oils include alkane oils such as isododecane and isohexadecane, ester oils, ether oils and artificial triglycerides.
[0315] The ester oils are preferably liquid esters of saturated or unsaturated, linear or branched Ci-C26 aliphatic monoacids or polyacids and of saturated or unsaturated, linear or branched Ci-C26 aliphatic monoalcohols or polyalcohols, the total number of carbon atoms of the esters being greater than or equal to 10.
[0316] Preferably, for monoalcohol esters, at least one of the alcohol and acid from which the esters of the present invention are derived is branched.
[0317] Among the monoesters of monoacids and monoalcohols, ethyl palmitate, ethylhexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate and isostearyl neopentanoate may be mentioned.
[0318] Esters of C4-C22 dicarboxylic or tricarboxylic acids and Ci-C22 alcohols, and esters of non-sugar C4-C26 monocarboxylic, dicarboxylic or tricarboxylic acids and dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols, may also be used.
[0319] Examples include: 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; trilactate glyceryl; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; neopentyl glycol diheptanoate; diethylene glycol diisononanoate.
[0320] As ester oils, esters and sugar diesters of C6-C30 fatty acids, and preferably C2-C22, may be used. It is recalled that the term "sugar" refers to compounds based on oxygen-bearing hydrocarbons containing several alcohol functional groups, with or without aldehyde or ketone functional groups, and comprising at least four carbon atoms. These sugars may be monosaccharides, oligosaccharides, or polysaccharides.
[0321] Examples of suitable sugars that may be cited include sucrose, glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose, and their derivatives, including alkylated derivatives, such as methyl derivatives, for example methylglucose.
[0322] Sugar esters of fatty acids may be selected in particular from the group comprising the esters or mixtures of esters of sugars described above and of linear or branched fatty acids, saturated or unsaturated in C6-C3o, and preferably in Ci2-C22. If they are unsaturated, these compounds may have one to three conjugated or non-conjugated carbon-carbon double bonds.
[0323] The esters according to this variant can also be chosen from monoesters, diesters, triesters, tetraesters, polyesters, and mixtures thereof.
[0324] These esters may be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates and arachidonates, or mixtures thereof such as, in particular, mixed esters of oleopalmitate, oleostearate and palmitostearate, as well as pentaerythrityl tetraethyl hexanoate.
[0325] Monoesters and diesters are used in particular, and in particular monooleates or dioleates, stearates, behenates, oleopalmitates, linoleates, linolenates and oleostearates of sucrose, glucose or methylglucose.
[0326] An example that can be cited is the product sold under the name Glucate DO by the company Amerchol, which is a methylglucose dioleate.
[0327] Examples of preferred ester oils include, for instance, diisopropyl adipate, dioctyl adipate, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, isodecyl neopentanoate, myristyle 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, laurate isohexyl, hexyl laurate, isocetyl stearate, isopropyl isostearate, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), the pentaerythrityl tetra(2-ethylhexanoate), 2-ethylhexyl succinate, diethyl sebacate, cetearyl isononanoate, and mixtures thereof.
[0328] Examples of artificial triglycerides include, 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).
[0329] Examples of silicone oils include, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenopolysiloxane and the like; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like; and mixtures thereof.
[0330] Preferably, the silicone oil is selected from liquid polydialkylsiloxanes, in particular liquid polydimethylsiloxanes (PDMS) and liquid polyorganosiloxanes comprising at least one aryl group.
[0331] These silicone oils can also be organomodified. The organomodified silicones that can be used for 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.
[0332] Organopolysiloxanes are defined in more detail in Chemistry and Technology of Silicones (1968) by Walter Noll, Academy Press. They can be volatile or non-volatile.
[0333] When volatile, silicones are particularly chosen from those having a boiling point between 60 °C and 260 °C, and even more particularly from:
[0334] (i) Cyclic polydialkylsiloxanes comprising 3 to 7 and preferably 4 with 5 silicon atoms. Examples include 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 and Silbione 70045 V5 by Rhodia; and dodecamethylcyclopentasiloxane, sold under the name Silsoft 1217 by Momentive Performance Materials, and mixtures thereof. Also noteworthy are cyclocopolymers of the dimethylsiloxane / methylalkylsiloxane type, such as Volatile Silicone FZ 3109, sold by Union Carbide, with the formula: p DD ——dg —; ÇHa '----------------------------ÇH; with D”: '"" SH O — with 0': """ St ™ O — CHg 0¾¾
[0335] Other examples include 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,r-bis(2,2,2',2',3,3'-hexatrimethylsilyloxy)neopentane; and
[0336] (ii) Linear volatile polydialkylsiloxanes containing 2 to 9 silicon atoms and having a viscosity less than or equal to 5 x 10⁶ m² / s at 25 °C. An example is decamethyltetrasiloxane, sold in particular under the name SH 200 by Toray Silicone. Silicones belonging to this category are also described in the article published in Cosmetics and Toiletries, Vol. 91, Jan. 1976, pp. 27–32, Todd & Byers, Volatile Silicone Fluids for Cosmetics. The viscosity of silicones is measured at 25 °C according to ASTM 445 Annex C.
[0337] Non-volatile polydialkylsiloxanes can also be used. These non-volatile silicones are more particularly chosen from among the polydialkylsiloxanes, among which the main examples are polydimethylsiloxanes containing trimethylsilyl terminal groups.
[0338] Among these polydialkylsiloxanes, the following commercial products may be cited, without limitation:
[0339] - Silbionedes oils from ranges 47 and 70 047 or Mirasil oils sold by Rhodia, for example oil 70 047 V 500 000;
[0340] - the oils from the Mirasil range sold by the company Rhodia;
[0341] - Dow Corning's 200 series oils, such as DC200 with a viscosity of 60,000 mm² / s; and
[0342] - Viscasil oils from General Electric and certain oils in the SF range (SF 96, SF 18) from General Electric.
[0343] We can also mention polydimethylsiloxanes containing dimethylsilanol terminal groups known as dimethiconol (CTFA), such as the oils in the 48 range from the Rhodia company.
[0344] Among silicones containing aryl groups, we can mention polydiarylsiloxanes, in particular polydiphenylsiloxanes and polyalkylarylsiloxanes such as phenyl silicone oil.
[0345] The phenyl silicone oil may be selected from the phenyl silicones of the following formula:
[0346] in which
[0347] - Ri in Rio, independently of each other, are radicals based of saturated or unsaturated, linear, cyclic or branched C1-C30 hydrocarbons, preferably C1-C12 hydrocarbon-based radicals, and more preferably C1-C6 hydrocarbon-based radicals, in particular methyl, ethyl, propyl or butyl radicals, and
[0348] - m, n, p and q are, independently of each other, integers from 0 up to 900 inclusive, preferably from 0 to 500 inclusive, and more preferably from 0 to 100 inclusive,
[0349] provided that the sum n+m+q is not equal to 0.
[0350] Examples that may be cited include products sold under the following names:
[0351] - Silbionede oils from the 70 641 range of Rhodia;
[0352] - the oils from the Rhodorsil70 633 and 763 ranges of Rhodia;
[0353] - Dow Corning 556 Cosmetic Grade Fluid oil from Dow Corning;
[0354] - silicones from Bayer's PK range, such as product PK20;
[0355] - certain oils in the General Electric SF range, such as SF 1023, SF 1154, SF 1250 and SF 1265.
[0356] As a phenylsilicone oil, phenyltrimethicone (Ri to R10 are a methyl; p, qetn = 0; m=l in the formula above) is preferable.
[0357] Organomodified liquid silicones may, in particular, contain polyethyleneoxy and / or polypropyleneoxy groups. Examples include KF-6017 silicone offered by Shin-Etsu, and SilwetL722 and L77 oils from Union Carbide.
[0358] Hydrocarbon oils may be selected from:
[0359] - lower C6-Ci6 alkanes, linear or branched, optionally cyclic. Examples that can be cited include hexane, undecane, dodecane, tridecane, and isoparaffins, for example isohexadecane, isododecane, and isodecane; and
[0360] - linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffins, liquid petroleum jelly, hydrogenated polydecenes and polyisobutenes such as Parleam# and squalane.
[0361] Preferred examples of hydrocarbon oils include, 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, isoeicosane and a decene / butene copolymer; and mixtures thereof.
[0362] The term "fatty" in fatty alcohol means the inclusion of a relatively large number of carbon atoms. Thus, alcohols that have 4 or more carbon atoms, preferably 6 or more, and more preferably 12 or more, are encompassed within the scope of fatty alcohols. Fatty alcohols can be saturated or unsaturated. Fatty alcohols can be linear or branched.
[0363] The fatty alcohol may have the structure R-OH in which R is selected from saturated and unsaturated, linear and branched radicals containing from 4 to 40 carbon atoms, preferably from 6 to 30 carbon atoms, and more preferably from 12 to 20 carbon atoms. In at least one embodiment, R may be selected from alkyl groups in the form C2-C2O and alkenyl groups in the form C2-C2O. R may or may not be substituted with at least one hydroxyl group.
[0364] Examples of fatty alcohols include lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, oleyl alcohol, linoleyl alcohol, palmitoleyl alcohol, arachidonylic alcohol, erucyl alcohol and mixtures thereof.
[0365] It is preferable that the fatty alcohol be a saturated fatty alcohol.
[0366] Thus, the fatty alcohol can be chosen from among the saturated or unsaturated, linear or branched C6-C3o alcohols, preferably the saturated, linear or branched C6-C3o alcohols, and more preferably the saturated, linear or branched Ci2-C2o alcohols.
[0367] The term "saturated fatty alcohol" here refers to an alcohol having a long saturated aliphatic carbon chain. Preferably, the saturated fatty alcohol should be chosen from any saturated C6-C30 fatty alcohols, linear or branched. Among saturated C6-C30 fatty alcohols, linear or branched, saturated C12-C20 fatty alcohols, linear or branched, may preferably be used. Any saturated C16-C20 fatty alcohol, linear or branched, may more preferably be used. Branched C16-C20 fatty alcohols may even more preferably be used.
[0368] Examples of saturated fatty alcohols include lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, and mixtures thereof. In one embodiment, cetyl alcohol, stearyl alcohol, octyldodecanol, hexyldecanol, or a mixture thereof (for example, alcohol cetearyl), as well as behenyl alcohol, can be used as saturated fatty alcohol.
[0369] 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.
[0370] It is preferable that the (c) oil be chosen from among polar oils, more preferably ester oils, and even more preferably dicaprylyl carbonate, isopropyl lauroyl sarcosinate, and one of their mixtures.
[0371] The quantity of the (c) oils in the composition according to the present invention may be 1% by weight or more, preferably 5% by weight or more, and more preferably 10% by weight or more, relative to the total weight of the composition.
[0372] The quantity of the (c) oil(s) in the composition according to the present invention may be 50% by weight or less, preferably 40% by weight or less and, more preferably 30% by weight or less, relative to the total weight of the composition.
[0373] The quantity of the (c) oils in the composition according to the present invention can be from 1% to 50% by weight, preferably from 5% to 40% by weight, and more preferably from 10% to 30% by weight, relative to the total weight of the composition. (Water)
[0374] The composition according to the present invention may include (d) water.
[0375] The quantity of (d) water in the composition according to the present invention may be 40% by weight or more, preferably 45% by weight or more, and more preferably 50% by weight or more, relative to the total weight of the composition.
[0376] The quantity of (d) water in the composition according to the present invention may be 80% by weight or less, preferably 75% by weight or less, and more preferably 70% by weight or less, relative to the total weight of the composition.
[0377] The quantity of (d) water in the composition according to the present invention can be from 40% to 80% by weight, preferably from 45% to 75% by weight, and more preferably from 50% to 70% by weight, relative to the total weight of the composition. (Surfactant)
[0378] The composition according to the present invention may comprise (e) at least one surfactant. If two or more surfactants are used, they may be identical or different.
[0379] The (e) surfactant may be selected from the group consisting of (e1) anionic surfactants, (e2) cationic surfactants, (e3) amphoteric surfactants, (e4) non-ionic surfactants, and mixtures thereof.
[0380] It is preferable that the (e) surfactant be chosen from the group consisting of (e3) amphoteric surfactants, (e4) non-ionic surfactants, and mixtures thereof.
[0381] It is more preferable that the (e) surfactant be chosen from among non-ionic surfactants.
[0382] The quantity of the surfactant(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, relative to the total weight of the composition.
[0383] The quantity of the surfactant(s) in the composition according to the present invention may be 15% by weight or less, preferably 10% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition.
[0384] The quantity of the surfactant(s) in the composition according to the present invention can be from 0.1% to 15% by weight, preferably from 0.5% to 10% by weight and, more preferably, from 1% to 5% by weight, relative to the total weight of the composition.
[0385] In one embodiment, the quantity of the surfactant(s) in the composition according to the present invention may be greater than 0.5% by weight, preferably 0.6% by weight or more, and more preferably 0.7% by weight or more, relative to the total weight of the composition.
[0386] In one embodiment, the quantity of the surfactant(s) in the composition according to the present invention may be greater than 0.5% and 15% by weight or less, preferably from 0.6% to 10% by weight, and more preferably from 0.7% to 5% by weight, relative to the total weight of the composition. Anionic surfactant:
[0387] It may be preferable that the anionic surfactant be chosen from the group consisting of (C6-C3O)alkyl sulfates, (C6-C3O)alkyl ether sulfates, (C6-C3O)alkylamido ether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates; (C6-C3O)alkylsulfonates, (C6-C3O)alkylamide sulfonates, (C6-C3O)alkylaryl sulfonates, α-olefin sulfonates, paraffin sulfonates; (C6-C3O)alkyl phosphates; (C6-C3O)alkyl sulfosuccinates, (C6-C3O)alkyl ether sulfosuccinates, (C6-C3O)alkylamide sulfosuccinates; (C6-C3O)alkyl sulfoacetates; (C6-C24)acyl sarcosinates; (C6-C24)acyl glutamates; (C6-C30)alkylpolyglycoside carboxylic ethers; (C6-C30)alkylpolyglycoside sulfosuccinates; (C6-C30)alkyl sulfosuccinamates; (C6-C24)acyl isethionates; N-(C6-C24)acyl taurates; C6-C30 fatty acid salts; coconut oil acid salts or hydrogenated coconut oil acid salts; (C8-C20)acyl lactylates; (C6-C30)alkyl-D-galactoside uronic acid salts; (C6- C3o)alkyl ether polyoxyalkylenated carboxylic acids; salts of (C6-C30)alkylaryl ether polyoxyalkylenated carboxylic acids and salts of (C6-C3o)alkylamido ether polyoxyalkylenated carboxylic acids; and their corresponding acidic forms.
[0388] In at least one embodiment, the anionic surfactants are in the form of salts such as alkali metal salts, for example sodium; alkaline earth metal salts, for example magnesium; ammonium salts; amine salts; and amino alcohol salts. Depending on the conditions, they may also be in acidic form. Cationic surfactant:
[0389] The (e2) cationic surfactant may be selected from the group consisting of primary, secondary or tertiary fatty amine salts optionally polyoxyalkylated, quaternary ammonium salts, and mixtures thereof.
[0390] According to one embodiment, the (e2) cationic surfactant that can be used in the composition according to the present invention is selected from behenyltrimethylammonium chloride, cetyltrimethylammonium chloride, quaternium-83, quaternium-87, quaternium-22, behenyllamidopropyl-2,3-dihydroxypropyldimethylammonium chloride, palmitylamidopropyltrimethylammonium chloride, and stearamidopropyldimethylamine. Amphoteric surfactant:
[0391] Amphoteric surfactants (zwitterionic surfactants) may be, for example (non-limiting list), amine derivatives such as aliphatic secondary or tertiary amines, and optionally quaternized amine derivatives, in which the aliphatic radical is a linear or branched chain including 8 to 22 carbon atoms and containing at least one water-soluble anionic group (e.g., carboxylate, sulfonate, sulfate, phosphate or phosphonate), and phospholipids.
[0392] The (e3) amphoteric surfactant may preferably be chosen from the group consisting of betaines and amidoaminecarboxylated derivatives, and phospholipids.
[0393] In one embodiment, the (e3) amphoteric surfactant may be chosen from betaine-type surfactants.
[0394] The amphoteric surfactant of the betaine type is preferably selected from the group consisting of alkylbetaines, alkylamidoalkylbetaines, sulfobetaines, phosphobetaines, and alkylamidoalkylsulfobetaines, in particular, (C8-C24)alkylbetaines, (C8-C24)alkylamido(Ci-C8)alkylbetaines, sulfobetaines, and (C8-C24)alkylamido(Ci-C8)alkylsulfobetaines. In one embodiment, the (e3) amphoteric surfactants of the betaine type are selected from (C8-C24)alkylbetaines, (C8-C24)alkylamido(Ci-C8)alkylsulfobetaines, sulfobetaines, and phosphobetaines.
[0395] Non-limiting examples that may be cited include compounds classified in the CTFA International Cosmetic Ingredient Dictionary & Handbook, 15th edition, 2014, under the names cocobetaine, laurylbetaine, cetylbetaine, coco / oleamidopropylbetaine, cocamidopropylbetaine, palmitamidopropylbetaine, stearamidopropylbetaine, cocamidoethylbetaine, cocamidopropylhydroxysultaine, oleamidopropylhydroxysultaine, cocohydroxysultaine, laurylhydroxysultaine, and cocosultaine, alone or in mixtures.
[0396] The amphoteric surfactant of the betaine type is preferably an alkylbetaine and an alkylamidoalkylbetaine, in particular cocobetaine and cocamidopropylbetaine.
[0397] Among the carboxylated amidoamine derivatives, we can cite the products sold under the name Miranol, as described in US patents no. 2,528,378 and 2,781,354 and classified in the CTFA dictionary, 3rd edition, 1982, under the names amphocarboxyglycinates and amphocarboxypropionates, with the respective structures:
[0398] RrCONHCH2CH2-N+(R2)(R3)(CH2COO) M+
[0399] in which:
[0400] - Ri designates an alkyl radical of an acid Ri-COOH present in coconut oil hydrolyzed, a heptyl, nonyl or undecyl radical,
[0401] - R2 designates a beta-hydroxyethyl group,
[0402] - R3 designates a carboxymethyl group,
[0403] - M+ denotes a cationic ion derived from alkali metals such as sodium; an ion ammonium; or an ion derived from an organic amine;
[0404] - X designates an organic or inorganic anionic ion such as halides, acetates, phosphates, nitrates, alkyl(Ci-C4)sulfates, alkyl(Ci-C4)- or alkyl(Ci-C4)aryl-sulfonates, in particular methylsulfate and ethylsulfate; or M+ and X are not present;
[0405] R1'-CONCH2CH2-N(B)(C) (B2)
[0406] in which:
[0407] - Rf designates an alkyl radical of an acid Ri'-COOH present in coconut oil or in hydrolyzed linseed oil, an alkyl radical, such as a C7, C9, Cn or Ci3 alkyl radical, a Cp alkyl radical and its isoform, or a Cp unsaturated radical,
[0408] - B represents -CH2CH2OX',
[0409] - C represents -(CH2)Z-Y', with z=l or 2,
[0410] - X' denotes a group -CH2-COOH, -CH2-COOZ', -CH2CH2-COOH, -CH2CH2- COOZ' or a hydrogen atom, and
[0411] - Y' denotes a radical -COOH, -COOZ', -CH2-CHOH-SO3Z', -CH2-CHOH-SO3H or a radical -CH2-CH(OH)-SO3-Z',
[0412] in which Z' represents an ion of an alkali or alkaline earth metal such as sodium, an ion derived from an organic amine or an ammonium ion;
[0413] and
[0414] Ra-NH-CH(Y”)-(CH2)nC(O)-NH-(CH2)nN(Rd)(Re) (B'2)
[0415] in which:
[0416] - Y" denotes -C(O)OH, -C(O)OZ", -CH2-CH(OH)-SO3H or -CH2-CH(OH)-SO3- Z", where Z" denotes a cationic ion derived from an alkali metal or alkaline earth metals such as sodium, an ion derived from an organic amine or an ammonium ion;
[0417] - Rd and Re denote a Ci-C4 alkyl or Ci-C4 hydroxyalkyl radical;
[0418] - Ra designates an alkyl or alkenyl group in the form C10-C3O of an acid, and
[0419] - n and n' independently denote an integer from 1 to 3.
[0420] It is preferable that the (e3) amphoteric surfactant of formula B1 and B2 be chosen from among the (C8-C24)-alkyl amphomonoacetates, the (C8-C24)alkyl amphodiacetates, the (C8-C24)alkyl amphomonopropionates and the (C8-C24)alkyl amphodipropionates.
[0421] These compounds are listed in the CTFA dictionary, 5th edition, 1993, under the names Disodium Cocoamphodiacetate, Disodium Lauroamphodiacetate, Disodium Caprylamphodiacetate, Disodium Capryloamphodiacetate, Disodium Cocoamphodipropionate, Disodium Lauroamphopropionate, Disodium Caprylamphodipropionate, Disodium Caprylamphodipropionate, Lauroamphodipropionic acid and Cocoamphodipropionic acid.
[0422] As an example, we can cite cocoamphodiacetate sold under the trade name Miranol C2M concentrate by the company Rhodia Chimie.
[0423] Among the compounds of formula (B'2) we can mention sodium diethylaminopropyl cacaospartamide (CTFA) marketed by CHIMEX under the name CHIMEXANE HB.
[0424] It may be preferable for the (e3) amphoteric surfactant to be chosen from among the phospholipids. The phospholipids may be chosen from the group consisting of lecithin, hydrogenated lecithin, lysolecithin, hydrogenated lysolecithin, hydroxylated lecithin, and a mixture thereof. Non-ionic surfactant:
[0425] The (e4) nonionic surfactants may be selected from alkyl and polyalkyl esters of poly(ethylene oxide), alkyl and polyalkyl ethers of poly(ethylene oxide), oxyalkylated alcohols, optionally polyoxyethylenated alkyl and polyalkyl esters of sorbitan, optionally polyoxyethylenated alkyl and polyalkyl ethers of sorbitan, alkyl and polyalkyl glycosides or polyglycosides, in particular alkyl and polyalkyl glucosides or polyglucosides, alkyl and polyalkyl esters of sucrose, alkyl and polyalkyl esters Optionally polyoxyethylenated glycerols, and optionally polyoxyethylenated alkyl and polyalkyl ethers of glycerol, and mixtures thereof. These are explained below. 1. The alkyl and polyalkyl esters of poly(ethylene oxide) that are preferably used are those with a number of ethylene oxide (EO) motifs ranging from 2 to 200. Examples that can be cited include stearate 40 EO, stearate 50 EO, stearate 100 EO, laurate 20 EO, laurate 40 EO and distearate 150 EO. 2. The alkyl and polyalkyl poly(ethylene oxide) ethers that are preferably used are those with an ethylene oxide (EO) number of motifs ranging from 2 to 200. Examples that can be cited include cetyl ether 23 EO, oleyl ether 50 EO, phytosterol 30 EO, steareth 40, steareth 100 and beheneth 100. 3. Oxyalkylated alcohols, in particular oxyethylated and / or oxypropylated, which are preferably used are those which may comprise from 1 to 150 oxyethylene and / or oxypropylene motifs, in particular containing from 20 to 100 oxyethylene motifs, in particular ethoxylated fatty alcohols, in particular in C8-C24 and preferably in Ci2-Ci8, such as ethoxylated stearyl alcohol with 20 oxyethylene motifs (CTFA name Steareth-20), for example Brij 78 sold by the company Uniqema, ethoxylated cetearyl alcohol with 30 oxyethylene motifs (CTFA name Ceteareth-30), and the mixture of fatty alcohols in Ci2-C15 comprising 7 oxyethylene motifs (CTFA name Ci2-Ci5 Pareth-7), for example the product sold under the name Neodol 25-7 by Shell Chemicals;or in particular oxyalkylated (oxyethylated and / or oxypropylated) alcohols containing 1 to 15 oxyethylene and / or oxypropylene motifs, in particular fatty alcohols ethoxylated in C8-C24 and preferably in Ci2-Ci8, such as stearyl alcohol ethoxylated with 2 oxyethylene motifs (CTFA name Steareth-2), for example Brij 72 sold by the company Uniqema. ; 4. The alkyl and polyalkyl esters of sorbitan optionally polyoxyethylenated which are preferably used are those having a number of ethylene oxide (EO) motifs ranging from 0 to 100. Examples which may be cited include sorbitan laurate 4 or 20 EO, in particular polysorbate 20 (or polyoxyethylene (20) sorbitan monolaurate) such as the Tween 20 product sold by Uniqema, sorbitan palmitate 20 EO, sorbitan stearate 20 EO, sorbitan oleate 20 EO, or the Cremophor products (RH 40, RH 60, etc.) from BASF. 5. The alkyl and polyalkyl sorbitan ethers optionally polyoxyethylenated which are preferably used are those with an ethylene oxide (EO) motif number from 0 to 100. 6. The alkyl or polyalkyl glucosides or polyglucosides which are preferably used are those containing an alkyl group comprising from 6 to 30 carbon atoms and preferably from 6 to 18 or even from 8 to 16 carbon atoms, and containing a glucoside group comprising preferably from 1 to 5 and in particular 1, 2 or 3 glucoside motifs.Alkyl polyglucosides can be chosen, for example, from decyl glucoside (alkyl-ClCi / Cn-polyglucoside (1,4)), for example the product sold under the name Mydol 10 by Kao Chemicals or the product sold under the name Plantacare 2000 UP by Henkel and the product sold under the name Oramix NS 10 by SEPPIC; caprylyl / capryl glucoside, for example the product sold under the name Plantacare KE 3711 by Cognis or Oramix CG 110 by SEPPIC; lauryl glucoside, for example the product sold under the name Plantacare 1200 UP by Henkel or Plantaren 1200 N by Henkel; coco glucoside, for example the product sold under the name Plantacare 818 UP by Henkel; caprylyl glucoside, for example the product sold under the name Plantacare 810 UP by the company Cognis; and mixtures thereof. 7. Examples of alkyl and polyalkyl esters of sucrose that are The preferred ones used are sucrose laurate sold by Mitsubishi-Kagaku Foods under the name Surfhope SE COSME C-1216, sucrose palmitate sold by Mitsubishi-Kagaku Foods under the names Ryoto Sugar Ester P-1670 and Surfhope SE COSME C-1616, sucrose stearate sold under the name Crodesta F160, and sucrose cocoate sold by Evonik under the name TegosoftLSE 65K Soft. 8. Alkyl and polyalkyl esters of glycerol (optional) Polyoxyethylenates that are preferably used are those with an ethylene oxide (EO) number of motifs ranging from 0 to 100 and a glycerol number of motifs ranging from 1 to 30. Examples that can be cited include hexaglyceryl monolaurate and PEG-30 glyceryl stearate.
[0426] In one embodiment, the (e4) nonionic surfactant can be selected from fatty acid polyglyceryl esters.
[0427] The fatty acid polyglyceryl ester may have a polyglycerol fraction derived from 2 to 10 glycerols, preferably from 2 to 8 glycerols, and more preferably from 2 to 6 glycerols. In other words, the fatty acid polyglyceryl ester may comprise from 2 to 10 polyglyceryl motifs, preferably 2 to 8 polyglyceryl motifs, and more preferably 2 to 6 polyglyceryl motifs.
[0428] The fatty acid polyglyceryl ester may be selected from mono, di and tri esters of linear or branched fatty acids, saturated or unsaturated, preferably of saturated fatty acids, including from 4 to 32 carbon atoms, preferably from 8 to 26 carbon atoms, and more preferably from 10 to 20 carbon atoms, such as lauric acid, oleic acid, stearic acid, isostearic acid, capric acid, caprylic acid and myristic acid.
[0429] It is preferable that the (e4) nonionic surfactant be chosen from polyglyceryl monoesters of saturated or unsaturated fatty acid.
[0430] The fatty acid polyglyceryl ester may have an HLB (hydrophilic-lipophilic balance) value of 7.0 to 16.0, preferably 7.5 to 15.5, and more preferably 8.0 to 15.0. The term HLB (hydrophilic-lipophilic balance) is well known to those skilled in the art and reflects the ratio between the hydrophilic and lipophilic parts in the molecule. If two or more fatty acid polyglyceryl esters are used, the HLB value is determined by the weighted average of the HLB values of all the fatty acid polyglyceryl esters.
[0431] The fatty acid polyglyceryl ester may be selected from the group consisting of PG-2 caprate (HLB: 9.5), PG-2 laurate (HLB: 8.5), PG-4 oleate (HLB: 8.8), PG-4 laurate (HLB: 10.4), PG-4 isostearate (HLB: 8.2), PG-5 laurate (HLB: 15.8), PG-6 isostearate (HLB: 10.8), PG-3 cocoate (HLB: 12.0), PG-3 caprate (HLB: 10.0), PG-4 caprylate (HLB: 14), PG-4 caprate (HLB: 14.0), PG-5 myristate (HLB: 15.4), PG-5 stearate (HLB: 15.0), PG-5 oleate (HLB: 14.9), PG-6 caprylate (HLB: 14.6), PG-6 caprate (HLB: 13.1), PG-6 laurate (HLB: 14.5), and mixtures thereof.
[0432] It may be preferable that the (e4) nonionic surfactant be chosen from fatty acid polyglyceryl esters, more preferably saturated fatty acid polyglyceryl esters, and even more preferably saturated fatty acid polyglyceryl monoesters such as PG-4 caprate.
[0433] 9) Alkyl and polyalkyl glycerol ethers optionally polyoxyethylenated which Preferably used are those with a number of ethylene oxide (EO) motifs ranging from 0 to 100 and a number of glycerol motifs ranging from 1 to 30. Examples that can be cited include Nikkol Batyl 100 alcohol and Nikkol Chimyl 100 alcohol.
[0434] It is preferable that the (e4) nonionic surfactant be chosen from alkyl or polyalkyl esters of sucrose, more preferably from the group consisting of sucrose laurate, sucrose palmitate, sucrose stearate, sucrose cocoate, and a mixture thereof. (Optional ingredients)
[0435] The composition according to the present invention may also include at least one optional or additional ingredient.
[0436] The optional or additional ingredient(s) may be chosen from the group consisting, for example, of polyols; cationic, anionic, non-ionic or amphoteric polymers; perfumes; preservatives, co-preservatives, stabilizers; and mixtures thereof.
[0437] The quantity of the optional ingredient or ingredients) or additional ingredient(s) is not limited, but may be from 0.01% to 30% by weight, preferably from 0.1% to 20% by weight and, more preferably, from 1% to 10% by weight, relative to the total weight of the composition according to the present invention.
[0438] The composition according to the present invention may include at least one organic UV filter in an amount of less than 6% by weight, preferably less than 3% by weight, and more preferably less than 1% by weight, relative to the total weight of the composition. Preferably, the composition according to the present invention may not include any organic UV filter. (Methods of implementation)
[0439] According to a preferred embodiment, the composition according to the present invention comprises, relative to the total weight of the composition:
[0440] from 0.1% to 35% by weight of (a) at least one inorganic UV filter; and
[0441] from 0.01% to 10% by weight of (b) at least one thickener selected from (b1) (meth)acrylic-based thickeners, (b2) cellulose-based thickeners, and (b3) mixtures thereof,
[0442] in which
[0443] The (bl) (meth)acrylic-based thickener comprises at least one monomer bearing at least one sulfonic group, and
[0444] the weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition is less than 0.2, preferably 0.15 or less, and more preferably 0.1 or less.
[0445] According to another, more preferred embodiment, the composition according to the present invention comprises, relative to the total weight of the composition:
[0446] from 0.5% to 30% by weight of (a3) at least one amphiphilic inorganic UV filter; and
[0447] from 0.05% to 5% by weight of (b) at least one thickener selected from (bl1) (Meth)acrylic polymers comprising at least one monomer bearing at least one sulfonic group and at least one N,N-di(Ci-C4)alkylacrylamide monomer, (b2') microcrystalline cellulose, carboxymethylcellulose, sodium carboxymethylcellulose or cellulose gum, carboxymethyl hydroxyethylcellulose, hydroxyethyl cellulose, hydroxyethyl ethylcellulose, hydroxypropylcellulose, hydroxypropyl methylcellulose, hydroxyethylmethylcellulose, sodium cellulose sulfate, and mixtures thereof, and (b3) mixtures thereof,
[0448] in which
[0449] the weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition is less than 0.2, preferably 0.15 or less, and more preferably 0.1 or less.
[0450] According to another, even more preferred embodiment, the composition according to the present invention comprises, relative to the total weight of the composition:
[0451] of 1% to 25% by weight of (a3") titanium dioxide (and) silica (and) cetyl phosphate; and
[0452] from 0.1% to 1% by weight of (b) at least one thickener selected from (b1) crosslinked polyacrylate-6 polymer, (b2) microcrystalline cellulose, cellulose gum, and mixtures thereof, and (b3) mixtures thereof,
[0453] in which
[0454] the weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition is less than 0.2, preferably 0.15 or less, and more preferably 0.1 or less. (Preparation)
[0455] The composition according to the present invention can be prepared by mixing the essential ingredient(s) as explained above, and the optional ingredient(s), if necessary, as explained above.
[0456] The method and means for mixing 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. (Shape)
[0457] The form of the composition according to the present invention is not limited. For example, the composition according to the present invention may be in the form of a suspension or a dispersion.
[0458] The composition according to the present invention may be in the form of an oil-in-water (O / W), water-in-oil (W / O), or multiphase dispersion or emulsion (for example, W / O / O and W / O / O), preferably an O / W or W / O dispersion or emulsion, and more preferably an O / W dispersion or emulsion when combined with at least one oil and water. Thus, if the composition according to the present invention comprises (c) at least one oil and (d) water, the composition according to the present invention may be in the form, for example, of an O / W composition such as an O / W dispersion or emulsion.
[0459] It is preferable that the composition according to the present invention be in the form of an O / W dispersion or emulsion.
[0460] The composition according to the present invention, in the form of an oil-in-water dispersion or emulsion, may comprise dispersed fatty phases, such as oily phases dispersed in a continuous aqueous phase. The dispersed fatty phases may be in the form of oil droplets in the aqueous phase. Preferably, the composition according to the present invention may be in the form of an oil-in-water gel dispersion or emulsion.
[0461] The H / W architecture or structure, which consists of fatty phases dispersed in an aqueous phase, has an external aqueous phase and, consequently, the composition according to the present invention having the H / W architecture or structure can provide a pleasant sensation when used because of the immediate feeling of freshness that the aqueous phase can provide.
[0462] The oily phase in the composition according to the present invention may further comprise any hydrophobic ingredient in addition to (c) oil.
[0463] For example, the oil phase of the composition according to the present invention may comprise at least one lipophilic or liposoluble cosmetic active ingredient. A single type of such cosmetic active ingredient, or two or more different types of such a cosmetic active ingredient, may be used in combination.
[0464] The quantity of the fat phase in the composition according to the present invention may be 1% by weight or more, preferably 5% by weight or more and, more preferably, 10% by weight or more, relative to the total weight of the composition.
[0465] The quantity of the fat phase in the composition according to the present invention may be 50% by weight or less, preferably 45% by weight or less and, more preferably, 40% by weight or less, relative to the total weight of the composition.
[0466] The quantity of the fat phase in the composition according to the present invention can be from 1% to 50% by weight, preferably from 5% to 45% by weight and, more preferably, from 10% to 40% by weight, relative to the total weight of the composition.
[0467] The aqueous phase, if present, in the composition according to the present invention may further comprise any hydrophilic ingredient in addition to (d) water.
[0468] For example, the aqueous phase, if present, of the composition according to the present invention may comprise at least one hydrophilic or water-soluble cosmetic active ingredient. Only one type of such cosmetic active ingredient may be used, or two or more different types of such a cosmetic active ingredient may be used in combination.
[0469] In addition, the aqueous phase may include at least one pH adjuster such as an acid and a base, and / or at least one organic solvent such as a diol and a polyol.
[0470] The quantity of the aqueous phase in the composition according to the present invention may be 40% by weight or more, preferably 45% by weight or more and, more preferably, 50% by weight or more, relative to the total weight of the composition.
[0471] The quantity of the aqueous phase in the composition according to the present invention may be 90% by weight or less, preferably 85% by weight or less and, more preferably, 80% by weight or less, relative to the total weight of the composition.
[0472] The quantity of the aqueous phase in the composition according to the present invention can be from 40% to 90% by weight, preferably from 45% to 85% by weight and, more preferably, from 50% to 80% by weight, relative to the total weight of the composition.
[0473] The weight ratio of fat phase / aqueous phase can be from 50 / 50 to 10 / 90, preferably from 50 / 50 to 15 / 85 and, more preferably, from 50 / 50 to 20 / 80. (Application)
[0474] The composition according to the present invention can be used as a cosmetic composition for a keratinous material, preferably as a cosmetic composition for the skin, and more preferably as a cosmetic composition for the skin for the protection of the skin from UV rays.
[0475] The keratinous material encompasses the skin and mucous membranes. The skin here includes the skin of the face, the skin of the neck, and the scalp. The composition according to the present invention can also be used for mucous membranes such as the lips.
[0476] In particular, the composition according to the present invention may be a sunscreen composition or an anti-UV composition. [Procedure and use]
[0477] The present invention may also relate to:
[0478] a cosmetic process for a keratinous material such as skin, comprising: applying the composition according to the present invention to the keratinous material; or
[0479] a use of the composition according to the present invention for the preparation of a UV protective film on a keratinous material such as skin.
[0480] The cosmetic process here refers to a non-therapeutic process for protecting a keratinous material such as the skin against UV rays such as those from the sun.
[0481] The present invention may also relate to a use of
[0482] (b) at least one thickener selected from (bl) thickeners based on (meth)acrylic, (b2) cellulose-based thickeners, and (b3) mixtures thereof,
[0483] in a composition comprising
[0484] (a) at least one inorganic UV filter,
[0485] in which
[0486] The (bl) (meth)acrylic-based thickener comprises at least one monomer bearing at least one sulfonic group, and
[0487] the weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition is less than 0.2, preferably 0.15 or less, and more preferably 0.1 or less,
[0488] in order to stabilize the composition and reduce the formation of aggregates, which may be in the form of vermicelli, derived from (b) the thickener.
[0489] The above explanations concerning the (a) inorganic UV filter and the (b) thickener, including the (b1) (meth)acrylic-based thickener, the (b2) cellulose-based thickener, and (b3) mixture thereof, for the composition according to the present invention, can also be applied to those used above. EXAMPLES
[0490] The present invention will be described in more detail by means of examples. However, these should not be interpreted as limiting the scope of the present invention. Examples 1 to 4 and Comparative Examples 1 to 3 [Preparation]
[0491] Each of the compositions according to Examples 1 to 4 and Comparative Examples 1 to 3 was prepared by mixing the ingredients listed in Table 1. The numerical values of the quantities of ingredients in Table 1 are all based on a "% by weight" of active substances.
[0492] Elements (a) to (e) in Table 1 correspond to those explained above in the descriptive memorandum.
[0493] [Tables 1] Com p. 1 Ex. 2 Ex. 3 Com p.4 Ex. Com p. 1 Ex. Com p. 2 Ex. Comp. 3 (a) Titanium dioxide (and) Silica (and) Cetyl phosphate*(1) 10 10 10 10 10 10 10 (b2) Microcrystalline cellulose (and) cellulose gum*(2) 0.75 1 - - 2 - - (bl) Polyacrylate-6 crosslinked polymer*(3) - - 0.1 0.15 - - - Xanthan gum - - - - - 0.1 0.25 (c) Isopropyl lauroyl sarcosinate 20 20 20 20 20 20 20 (e) Sucrose laurate 2 2 2 2 2 2 2 Glycerin 10 10 10 10 10 10 10 Preservatives 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 (d) Water qsp 10 0 qsp 100 qsp 100 qsp 100 qsp 10 0 qsp 10 0 qsp 100 (b) / (a) 0.075 0.1 0.01 0.015 0.2 0.01 0.025 Stability Good Good Good Good Good Bad Good Vermicelli Formation Very good Very good Good Good Bad Good Bad 1. Sold by Merck under the name EusolexT-EASY 2. Sold by DuPont under the name Avicel PC-611 3. Sold by the company SEPPIC under the name SEPIMAX ZEN™
[0494] (b) / (a): Weight ratio of the quantity of ingredient (b) (ingredient (bl) or ingredient (b2)) / the quantity of ingredient (a) [Reviews] (Stability)
[0495] Each of the compositions according to Examples 1 to 4 and Comparative Examples 1 to 3 was stored in a transparent container at 55 °C for 1 week. Stability compositions were observed visually and evaluated according to the following criteria.
[0496] Good: No phase separation, creaming or sedimentation was observed.
[0497] Bad: Phase separation and / or creaming and / or sedimentation have been observed.
[0498] The results are shown in Table 1. (Vermicelli)
[0499] 0.08 mL of each of the compositions according to Examples 1 to 4 and Examples Comparisons 1 to 3 were applied to artificial skin (Biokinde Beaulax), spread with a finger, and then dried at 45°C. Next, foundation was applied and rubbed twice with the backs of the fingers using a back-and-forth motion. The formation of ridges in the foundation was assessed according to the following criteria.
[0500] Very good: No vermicelli was observed.
[0501] Good: Small vermicelli in quantities less than 10 were observed.
[0502] Bad: Medium-sized vermicelli in quantities less than 10 or small-sized vermicelli in quantities of 10 or more were observed.
[0503] Very bad: Large vermicelli in quantities less than 10 or small vermicelli in quantities of 50 or more were observed.
[0504] Vermicelli: Aggregation that appears as a gum residue produced during application
[0505] The results are shown in Table 1. (Summary)
[0506] The compositions according to Examples 1 to 4 were stable and presented a low risk of vermicelli formation.
[0507] In contrast, the composition according to Comparative Example 1 was stable but presented a high risk of vermicelli formation. These results demonstrate that an appropriate range for the weight ratio of the amount of a thickener to the amount of an inorganic UV filter is important for both good stability and a low risk of vermicelli formation.
[0508] The compositions according to Comparative Examples 2 and 3 were unstable or presented a high risk of vermicelli formation. These results demonstrate that the use of a thickener that is not a (meth)acrylic-based thickener or a cellulose-based thickener does not work.
Claims
Demands
1. Composition, comprising: (a) at least one inorganic UV filter; and (b) at least one thickener selected from (b1) (meth)acrylic-based thickeners, (b2) cellulose-based thickeners, and (b3) mixtures thereof, wherein the (b1) (meth)acrylic-based thickener comprises at least one monomer bearing at least one sulfonic group, and the weight ratio of the amount of (b) thickener(s) / the amount of (a) inorganic UV filter(s) in the composition is less than 0.2, preferably 0.15 or less, and more preferably 0.1 or less.
2. Composition according to claim 1, wherein the (a) inorganic UV filter is selected from the (a3) amphiphilic inorganic UV filters.
3. Composition according to claim 2, wherein the (a3) amphiphilic inorganic UV filter comprises at least one coating comprising at least one amphiphilic material, preferably at least one surfactant, more preferably at least one anionic surfactant and / or at least one non-ionic surfactant.
4. Composition according to claim 2 or 3, wherein the (a3) amphiphilic inorganic UV filter comprises at least one coating comprising (i) at least one anionic surfactant selected from alkyl phosphates and their salts, preferably from C8-C26 alkyl monophosphates and their salts, more preferably from Ci2-C22 alkyl monophosphates and their salts, even more preferably from the group consisting of cetyl phosphate, potassium cetyl phosphate and a mixture thereof, and in particular cetyl phosphate; and / or (ii) at least one non-ionic surfactant selected from - esters of a fatty acid, preferably of a C8-C24 fatty acid, and more preferably of a C16-C22 fatty acid, and (poly)oxyalkylated sorbitol esters, in particular oxyethylated and / or oxypropylened such as polysorbate-20, polysorbate-40, polysorbate-60, polysorbate-65, polysorbate-80 and polysorbate-85; - esters of a fatty acid in Ci2-C2o and a polyglycerol comprising 3 to 12 glycerol groups, preferably 6 to 10 glycerol groups such as polyglyceryl-6 stearate, polyglyceryl-6 isostearate, polyglyceryl-6 laurate, polyglyceryl-6 myristate, polyglyceryl-6 oleate, polyglyceryl-10 stearate, polyglyceryl-10 isostearate, polyglyceryl-10 laurate, polyglyceryl-10 myristate and polyglyceryl-10 oleate;and - their mixtures, preferably (i) at least one anionic surfactant selected from alkyl phosphates and their salts, preferably from C8-C26 alkyl monophosphates and their salts, more preferably from Ci2-C22 alkyl monophosphates and their salts, even more preferably from the group consisting of cetyl phosphate, potassium cetyl phosphate, and a mixture thereof, and in particular cetyl phosphate.;
5. Composition according to claim 3 or 4, wherein the coating further comprises at least one hydrophilic compound selected from the group consisting of silica, hydrated silica, alumina and aluminum hydroxide; at least one lipophilic compound selected from the group consisting of stearic acid and isostearic acid; or mixtures thereof, preferably at least one hydrophilic compound selected from the group consisting of silica, hydrated silica, alumina and aluminum hydroxide, and more preferably silica.
6. Composition according to any one of claims 1 to 5, wherein the (bl) thickener based on (meth)acrylic is selected from (meth)acrylic polymers comprising at least one monomer bearing at least one sulfonic group, and at least one monomer of N,N-di(Ci-C4)alkylacrylamide, preferably (meth)acrylic polymers comprising at least one monomer bearing at least one sulfonic group, at least one monomer of N,N-di(Ci-C4)alkylacrylamide, and at least one monomer represented by the following formula (3): % / Ri (3) / O—r9 crJx 2 in which Ri denotes a hydrogen atom or a linear or branched Ci-C6 alkyl radical, preferably methyl; Y denotes O or NH; R2 denotes a hydrocarbon-based radical comprising from 6 to 50 carbon atoms and more preferably from 8 to 40 carbon atoms and even more preferably from 10 to 30 carbon atoms; and x denotes a number from 0 to 100, and more preferably optionally crosslinked copolymers of 2-acrylamido-2-methylpropanesulfonic acid, N,N-dimethylacrylamide, tetraethoxylated lauryl methacrylate and lauryl methacrylate.
7. Composition according to any one of claims 1 to 6 wherein the amount of (meth)acrylic-based thickener(s) in the composition is from 0.01% to 10% by weight, preferably from 0.05% to 5% by weight, and more preferably from 0.1% to 1% by weight, relative to the total weight of the composition.
8. Composition according to any one of claims 1 to 7, wherein the (b2) cellulose-based thickener is selected from the group consisting of microcrystalline cellulose, carboxymethylcellulose, sodium carboxymethylcellulose or cellulose gum, carboxymethyl hydroxyethylcellulose, hydroxyethyl cellulose, hydroxyethyl ethylcellulose, hydroxypropylcellulose, hydroxypropyl methylcellulose, hydroxyethyl methylcellulose, sodium cellulose sulfate, and mixtures thereof, and preferably from the group consisting of microcrystalline cellulose, cellulose gum, and mixtures thereof.
9. Composition according to any one of claims 1 to 8, wherein the amount of the (b2) cellulose-based thickener(s) in the composition is from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight, and more preferably from 0.1% to 5% by weight, relative to the total weight of the composition.
10. Composition according to any one of claims 1 to 9, wherein the composition comprises, relative to the total weight of the composition: from 1% to 25% by weight of (a3") titanium dioxide (and) silica (and) cetyl phosphate; and from 0.1% to 1% by weight of (b) at least one thickener selected from (b1) crosslinked polyacrylate-6 polymer, (b2) microcrystalline cellulose, cellulose gum, and mixtures thereof, and (b3) mixtures thereof, in which the weight ratio of the quantity of (b) thickener(s) / the quantity of (a) inorganic UV filter(s) in the composition is less than 0.2, preferably 0.15 or less, and more preferably 0.1 or less.