JP2018188498A - Composition in form of dispersion, preferably, emulsion, and more preferably, pickering emulsion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composition which is stable when containing no surface active agent or an extremely small amount of the surface active agent, can impart good tactile and can have a high UV shielding effect.SOLUTION: A composition in a form of a dispersion, preferably emulsion, and more preferably a pickering emulsion, contains: (a) a continuous phase; (b) at least one dispersion phase in (a) the continuous phase different from components (c) and (d); (c) at least one first water-insoluble particles containing at least one silicone resin containing a tri-functional unit represented by at least one formula (R)SiO, in formula, R is independently selected from a hydrocarbon group and a hydroxyl group by a tri-functional unit, and provided that at least R is a hydrocarbon group; and (d) at least second water-insoluble particles containing hydrophobic silica, and further contains (e) at least one organic UV filter.SELECTED DRAWING: None

Description

  The present invention relates to a composition in the form of a dispersion, preferably in the form of an emulsion, more preferably in the form of a pickering emulsion.

  Compositions in the form of emulsions can take various forms such as W / O, O / W, W / O / W and O / W / O. In most cases, an emulsifier or surfactant is essential to stabilize the emulsion form. However, emulsifiers have potential problems such as irritation to the skin.

  Pickering reported on emulsions stabilized with powder particles (J. Chem. Soc. 1907, 91, 2001). Since then, several emulsions called Pickering emulsions have been proposed which are stabilized by powder particles and contain no surfactant or only a small amount of surfactant. For example, WO 98/42300 discloses a pickering emulsion containing fine particles having a particle size of less than 200 nm and coated with silicone or the like.

  However, such pickering emulsions may have a loss of stability, and therefore, new designs that stabilize the pickering emulsions are desired. In addition, cosmetic applications of such pickering emulsions require good tactile sensation when applied to keratinous materials such as skin, especially when the emulsion contains a sticky organic UV filter . Furthermore, when the pickering emulsion includes an organic UV filter, it is desirable to be able to provide an effective UV shielding effect with the organic UV filter.

WO 98/42300 FR 0 853 634 EP-A-0 955 039 US 2004-175 338 U.S. Pat.No. 5,246,694 US 2004/0180011 U.S. Patent No. 7,470,725 USP 5240975 EP-669,323 U.S. Pat.No. 2,463,264 U.S. Pat.No. 5,237,071 U.S. Pat.No. 5,166,355 GB-2,303,549 DE-197,26,184 EP-893,119 WO 93/04665 DE-19855649 EP 669 323 US 2,463,264 US 4 077 441 US 4 850 517

J. Chem. Soc. 1907, 91, 2001 C.M.Hansen, `` The three dimensional solubility parameters '', J. Paint Technol, 39, 105 (1967) Brinker C. J. and Scherer G. W., Sol-Gel Science, New York, Academic Press, 1990 The Journal of the American Chemical Society, 60, 309, February 1938 International standard ISO 5794/1 (Annex D) Van de Hulst, H. C., "Light Scattering by Small Particles", Chapters 9 and 10, Wiley, New York, 1957 Standard NF T 30-022 B.L.Diffey, J. Soc. Cosmet. Chem. 40, 127-133, (1989)

  The object of the present invention is a composition in the form of a dispersion, preferably in the form of an emulsion, more preferably in the form of a pickering emulsion, comprising at least one organic UV filter and does not contain any surfactant or The present invention provides a composition that can be stable even when containing a very small amount of a surfactant, can provide a good tactile sensation, and can have a high UV shielding effect.

The above object of the present invention is a composition in the form of a dispersion, preferably in the form of an emulsion, more preferably in the form of a pickering emulsion,
(a) continuous phase,
(b) different from component (c) and (d), (a) at least one dispersed phase in the continuous phase;
(c) at least one formula (R) SiO _{3/2 wherein} R is independently selected from a hydrocarbon-based group and a hydroxyl group by means of a trifunctional unit, provided that at least one R is a hydrocarbon At least one first water-insoluble particle comprising at least one silicone resin, and a trifunctional unit
(d) comprising at least one second water-insoluble particle comprising hydrophobic silica,
(e) further comprising at least one organic UV filter;
Optionally, at least one surfactant is included in an amount of 1% or less by weight relative to the total weight of the composition.
It can be realized by a composition.

  The (a) continuous phase of the composition according to the invention may comprise at least one fatty substance, and the (b) dispersed phase of the composition according to the invention may comprise water.

  The fatty substance may be in liquid form at room temperature and atmospheric pressure.

  The fatty substance can be selected from polar oils.

Polar oil, C ₁₂ -C ₁₅ alcohol benzoate, diisopropyl sebacate, lauroyl sarcosine isopropyl, dicaprylyl carbonate, 2-phenylethyl benzoate, salicylate butyl octyl neopentanoate 2-octyldodecyl, dicaprylyl ether, isocetyl stearate, neopentane It can be selected from the group consisting of isodecyl acid, isononyl isononanoate, isopropyl myristate, isopropyl palmitate, isostearyl behenate, myristyl myristate, octyl palmitate, tridecyl trimellitate, and mixtures thereof.

  The amount of the fatty substance in the composition according to the present invention can be 30% by mass or more, preferably 40% by mass or more, more preferably 45% by mass or more, based on the total mass of the composition.

  The silicone resin may comprise at least one polyalkylsilsesquioxane, preferably at least one polymethylsilsesquioxane.

  The amount of (c) first water-insoluble particles in the composition according to the invention is 0.01-20% by weight, preferably 0.05-10% by weight, more preferably 0.1-5% by weight, based on the total weight of the composition. %.

  The hydrophobic silica can be silylated silica.

  The amount of (d) second water-insoluble particles in the composition according to the invention is 0.01-20% by weight, preferably 0.05-10% by weight, more preferably 0.1-5% by weight, based on the total weight of the composition. %.

  The amount of water in the composition according to the present invention can be 70% by mass or less, preferably 60% by mass or less, more preferably 50% by mass or less, based on the total mass of the composition.

  (e) The organic UV filter can be a lipophilic or oil-soluble organic UV filter.

  (e) Organic UV filters are butyl methoxydibenzoylmethane, ethylhexyl methoxycinnamate, ethylhexyl salicylate, homosalate, butylmethoxydibenzoylmethane, octocrylene, benzophenone-3, n-hexyl 2- (4-diethylamino-2-hydroxy Benzoyl) benzoate, 4-methylbenzylidene camphor, bis (ethylhexyloxyphenyl) methoxyphenyltriazine, ethylhexyltriazone, diethylhexylbutamidotriazone, 2,4,6-tris (dineopentyl 4'-aminobenzalmalonate)- s-triazine, 2,4,6-tris (diisobutyl 4'-aminobenzalmalonate) -s-triazine, 2,4-bis (dineopentyl4'-aminobenzalmalonate) -6- (n-butyl 4'-aminobenzoate) -s-triazine, 2,4,6-tris (biphenyl-4-yl) -1,3,5- Liazine, 2,4,6-Tris (terphenyl) -1,3,5-triazine, Drometrizol trisiloxane, Polysilicone-15, 1,1-dicarboxy (2,2'-dimethylpropyl) -4 , 4-Diphenylbutadiene, 2,4-bis [4- [5- (1,1-dimethylpropyl) benzoxazol-2-yl] phenylimino] -6-[(2-ethylhexyl) imino] -1,3 , 5-triazine, terephthalylidene dicamphor sulfonic acid, and mixtures thereof.

  The amount of the (e) organic UV filter in the composition according to the present invention can be 50% by mass or less, preferably 40% by mass or less, more preferably 30% by mass or less, with respect to the total mass of the composition. .

  The invention also relates to a method for the cosmetic treatment of keratin materials comprising the step of applying a composition according to the invention to the keratin materials.

  As a result of intensive studies, the inventors have found that the present invention is a composition in the form of a dispersion, preferably an emulsion, more preferably a pickering emulsion, and the composition does not contain any surfactant or an interface. It is possible to provide a composition that can be stable even when it contains only a very small amount of an active agent, can provide a good tactile sensation, and can have a high UV shielding effect. I found

Thus, the composition according to the invention is in the form of a dispersion, preferably in the form of an emulsion, more preferably in the form of a pickering emulsion,
(a) continuous phase,
(b) different from component (c) and (d), (a) at least one dispersed phase in the continuous phase;
(c) at least one formula (R) SiO _{3/2 wherein} R is independently selected from a hydrocarbon-based group and a hydroxyl group by means of a trifunctional unit, provided that at least one R is a hydrocarbon At least one first water-insoluble particle comprising at least one silicone resin, and a trifunctional unit
(d) comprising at least one second water-insoluble particle comprising hydrophobic silica,
The composition further comprises (e) at least one organic UV filter,
The composition optionally comprises at least one surfactant in an amount of 1% or less by weight relative to the total weight of the composition.

  The present invention preferably comprises (c) first water-insoluble particles and (c) first water-insoluble particles for preparing a dispersion in the form of an emulsion, more preferably in the form of a pickering emulsion, and even more preferably in the form of a W / O pickering emulsion. (d) may be characterized by the use of second water-insoluble particles.

  (c) The first water-insoluble particles and (d) the second water-insoluble particles can be present at the interface between (a) the continuous phase and (b) the dispersed phase.

  The composition according to the invention can have an excellent effect even when it contains no surfactant or very little surfactant.

  For example, the composition according to the invention can be stable not only immediately after preparation, but also under various temperature conditions over a long period of time.

  Furthermore, the composition according to the present invention can impart a good tactile sensation such as a non-sticky skin feel.

  Furthermore, the composition according to the invention may have a high UV shielding effect.

  In addition, the composition according to the invention does not contain any surfactant or contains only a small amount of surfactant, so that any disadvantages such as irritation of the skin can be avoided or reduced.

  Pickering emulsions usually require water-insoluble particles that are surface treated with at least one amphiphile. However, the present invention does not require the use of such particles to form a dispersion, preferably in the form of an emulsion, more preferably in the form of a pickering emulsion.

  In the following, the composition according to the invention will be explained in more detail.

[Composition]
(Dispersion form)
The composition according to the invention comprises (a) a continuous phase and (b) at least one dispersed phase. (b) The dispersed phase is present in (a) the continuous phase. The (b) dispersed phase is different from (c) the first water-insoluble particles and (d) the second water-insoluble particles, both of which will be described later.

  When (a) the continuous phase is an oily phase and (b) the dispersed phase is an aqueous phase, this is in the form of a W / O emulsion. On the other hand, when (a) the continuous phase is an aqueous phase and (b) the dispersed phase is an oily phase, this is in the form of an O / W emulsion.

  The composition according to the invention is preferably in the form of a W / O emulsion. In this preferred embodiment, usually (a) the continuous phase contains at least one fatty substance and (b) the dispersed phase contains water.

  The terms `` W / O emulsion '' or `` water-in-oil emulsion '' refer to a continuous oily phase (containing at least one fatty substance) and an aqueous phase in the form of droplets dispersed in the oily phase. Means any composition that is homogeneous to the naked eye, including the naked eye.

  More preferably, the composition according to the invention is in the form of a pickering emulsion. Even more preferably, the composition according to the invention is in the form of a W / O pickering emulsion.

(Fat substance)
The term `` fatty substance '' is an organic that is insoluble in water (solubility is less than 5% by weight, preferably less than 1% by weight, even more preferably less than 0.1% by weight) at room temperature (25 ° C.) and atmospheric pressure (760 mmHg). Means a compound. The fatty substance can contain in its structure at least two consecutive siloxane groups or at least one hydrocarbon-based chain containing at least 6 carbon atoms. In addition, the fatty material may be soluble in organic solvents such as chloroform, ethanol, benzene or decamethylcyclopentasiloxane under the same temperature and pressure conditions.

  According to the present invention, two or more fatty substances can be used in combination. For this reason, a single type of fatty substance or a combination of different types of fatty substances can be used. The fatty substance can be selected from lipophilic or oil-soluble UV filters which will be described later.

The fatty substance may be in liquid form or solid form. Here, the term “liquid” and “solid” means that the fatty substance is in a liquid or paste (non-solid) or solid form at room temperature (25 ° C.) and atmospheric pressure (760 mmHg or 10 ⁵ Pa), respectively. Means. The fatty substance is preferably in liquid or paste form, more preferably in liquid form at room temperature and atmospheric pressure.

  The fatty substance may be selected from the group consisting of oils of animal or vegetable origin, mineral oils, synthetic glycerides, animal or vegetable oils and fatty acid esters other than synthetic glycerides, fatty alcohols, fatty acids, silicone oils, and aliphatic hydrocarbons. it can. These fatty substances may be volatile or non-volatile. Preferably, the fatty substance can be selected from aliphatic hydrocarbons, vegetable oils, fatty alcohols, animal oils or vegetable oils and fatty acid esters other than synthetic glycerides, or mixtures thereof, more preferably from aliphatic hydrocarbons.

  Examples of aliphatic hydrocarbons include, for example, linear or branched hydrocarbons such as mineral oil (e.g. liquid paraffin), paraffin, petrolatum or petrolatum and naphthalene; isoeicosane, polydecene, hydrogenated polyisobutenes such as Parleam And decene / butene copolymers; and mixtures thereof.

Examples of other aliphatic hydrocarbons can also include linear or branched or optionally cyclic C ₆ -C ₁₆ lower alkanes. Examples that may be mentioned include hexane, undecane, dodecane, tridecane, and isoparaffins such as isohexadecane and isodecane.

  Examples of synthetic glycerides include, for example, caprylic / capric triglycerides, such as those sold by Steininerie Dubois or sold under the names Miglyol® 810, 812 and 818 by Dynamite Nobel Things can be mentioned.

  Examples of silicone oils include, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane; cyclic organopolysiloxanes such as octamethylcyclotetrasiloxane, decamethyl Mention may be made of cyclopentasiloxane, dodecamethylcyclohexasiloxane and the like; and mixtures thereof.

  Examples of vegetable oils include, for example, linseed oil, camellia oil, macadamia nut oil, sunflower oil, apricot oil, soybean oil, arara oil, hazelnut oil, corn oil, mink oil, olive oil, avocado oil, Mention may be made of sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, grape seed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

  Examples of animal oils include, for example, squalene, perhydrosqualene, and squalane.

Examples of esters of fatty acids and / or fatty alcohols that are advantageously different from the animal or vegetable oils and synthetic glycerides mentioned above include, inter alia, saturated or unsaturated, linear or branched C _1- Mention may be made of esters of C ₂₆ aliphatic monoacids or polyacids with saturated or unsaturated, linear or branched C _{1 to} C ₂₆ aliphatic monohydric or polyhydric alcohols. The carbon number is 10 or more.

Among monoesters, dihydroabiethyl behenate, octyldodecyl behenate, isocetyl behenate, cetyl lactate, C ₁₂ -C ₁₅ alkyl lactate, isostearyl lactate, lauryl lactate, linoleyl lactate, oleyl lactate, octanoic acid (iso) Stearyl, isocetyl octanoate, octyl octanoate, cetyl octanoate, decyl oleate, isocetyl isostearate, isocetyl laurate, isocetyl stearate, isodecyl octoate, isodecyl oleate, isononyl isononanoate, isostearyl palmitate, acetylricinoleic acid Methyl, myristyl stearate, octyl isononanoate, 2-ethylhexyl isononanoate, octyl palmitate, octyl pelargonate, octyl stearate, octyldodecyl erucate, Oleyl lucate, ethyl palmitate and isopropyl palmitate, 2-ethylhexyl palmitate, 2-octyldecyl palmitate, alkyl myristate such as isopropyl myristate, butyl myristate, cetyl myristate, 2-octyldodecyl myristate, myristine Mention may be made of myristyl acid or stearyl myristate, such as hexyl stearate, butyl stearate, isobutyl stearate, dioctyl malate, hexyl laurate, and 2-hexyldecyl laurate.

Furthermore, in connection with this variant, esters of C _{4 to} C ₂₂ dicarboxylic acids or tricarboxylic acids with C _{1 to} C ₂₂ alcohols, and mono-, di- or tricarboxylic acids with C _{2 to} C ₂₆ di- Esters with tri-, tetra- or pentahydroxy alcohols can also be used.

  In particular: diethyl sebacate, diisopropyl sebacate, diisopropyl adipate, di-n-propyl adipate, dioctyl adipate, diisostearyl adipate, dioctyl maleate, glyceryl undecylate, octyl stearoyl stearate Dodecyl, pentaerythrityl monoricinoleate, pentaerythrityl tetraisononanoate, pentaerythrityl tetrapelargonate, pentaerythrityl tetraisostearate, pentaerythrityl tetraoctanoate, propylene glycol dicaprylate, propylene glycol dicaprate, tridecyl erucate , Triisopropyl citrate, triisostearyl citrate, glyceryl trilactate, glyceryl trioctanoate, trioctyldede citrate Sil, trioleyl citrate, propylene glycol dioctanoate, neopentyl glycol diheptanoate, diethylene glycol diisononanoate, and polyethylene glycol distearate.

  Among the above esters, ethyl palmitate, isopropyl palmitate, myristyl palmitate, cetyl palmitate or stearyl palmitate, 2-ethylhexyl palmitate, 2-octyldecyl palmitate, alkyl myristate, such as isopropyl myristate, Butyl myristate, cetyl myristate or 2-octyldodecyl myristate, hexyl stearate, butyl stearate or isobutyl stearate, dioctyl malate, hexyl laurate, 2-hexyldecyl laurate, isononyl isononanoate or cetyl octanoate It may be preferable to use

The composition according to the invention can also comprise sugar esters and diesters of C ₆ -C ₃₀ , preferably C ₁₂ -C ₂₂ fatty acids, as fatty acid esters. The term “sugar” refers to an oxygen-bearing hydrocarbon-based compound containing several alcohol functional groups, with or without aldehyde functional groups or ketone functional groups, and containing at least 4 carbon atoms. I want to recall what it means. These sugars may be monosaccharides, oligosaccharides or polysaccharides.

  Examples of suitable sugars that may be mentioned include sucrose (or sucrose), glucose, galactose, ribose, fructose, maltose, mannose, arabinose, xylose and lactose, and derivatives thereof, in particular alkyl derivatives such as methyl derivatives, For example, methyl glucose is included.

Sugar esters of fatty acids include, among others, the aforementioned sugar, a linear or branched, saturated or unsaturated, C ₆ -C _30, preferably an ester or ester mixture of C ₁₂ -C ₂₂ fatty acids You can choose from a group. When the fatty acid is unsaturated, these compounds can contain 1 to 3 conjugated or non-conjugated carbon-carbon double bonds.

  Esters according to this variant can also be selected from mono-, di-, tri-, tetraesters and polyesters, and mixtures thereof.

  These esters include, for example, oleic acid ester, lauric acid ester, palmitic acid ester, myristic acid ester, behenic acid ester, coconut fatty acid ester, stearic acid ester, linoleic acid ester, linolenic acid ester, capric acid ester and arachidonic acid ester. Or mixtures thereof, such as, in particular, oleo-palmitic acid mixed esters, oleo-stearic acid mixed esters and palmito-stearic acid mixed esters.

  Use monoesters and diesters, in particular mono- or dioleic acid esters, stearic acid esters, behenic acid esters, oleopalmitic acid esters, linoleic acid esters, linolenic acid esters and oleostearic acid esters of sucrose, glucose or methyl glucose It may be more preferable.

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

Examples of esters or ester mixtures of sugars and fatty acids that can also be mentioned include: That is,
-Products sold by Croda, Inc. under the names Crodesta F160, F140, F110, F90, F70 and SL40, from 73% monoester and 27% diester and triester, respectively, 61% monoester and diester From 39% of triesters and tetraesters, 52% of monoesters and 48% of diesters, triesters and tetraesters, 45% of monoesters and 55% of diesters, triesters and tetraesters, 39% of monoesters and diesters, Each sucrose palmitostearate formed from 61% ester and tetraester, and sucrose monolaurate,
A product sold under the name Ryoto Sugar Ester, for example the reference number B370 corresponding to sucrose behenate formed from 20% monoester and 80% di-, tri-, polyester,
-Mono-dipalmito-sucrose stearate sold under the name Tegosoft® PSE by the company Goldschmidt.

  The fatty substance can be at least one fatty acid, and two or more fatty acids can be used. Fatty acids should be in acidic form (i.e. not in salt form to avoid soaping) and may be saturated or unsaturated, 6-30 carbon atoms, especially 9-30 carbons It may contain atoms and is optionally substituted, in particular with one or more hydroxyl groups (especially 1 to 4). When the fatty acid is unsaturated, these compounds can contain 1 to 3 conjugated or non-conjugated carbon-carbon double bonds. More specifically, the fatty acid is selected from myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid and isostearic acid. Preferably, the fatty substance is not a fatty acid.

  The fatty substance can be at least one fatty alcohol, and two or more fatty alcohols can be used.

The term “fatty alcohol” as used herein means any C ₈ -C ₃₀ aliphatic alcohol, saturated or unsaturated, linear or branched, especially one or Optionally substituted with multiple hydroxyl groups (especially 1 to 4). When the fatty alcohol is unsaturated, these compounds can contain 1 to 3 conjugated or non-conjugated carbon-carbon double bonds.

Among C ₈ -C ₃₀ aliphatic alcohols, for example, C ₁₂ -C ₂₂ aliphatic alcohols can be used. Among these, lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, behenyl alcohol, linoleyl alcohol, undecylenyl alcohol, palmitoleyl alcohol, linolenyl alcohol, myristyl alcohol, arachidonyl alcohol and erucyl Mention may be made of alcohols, as well as mixtures thereof. In one embodiment, cetyl alcohol, stearyl alcohol, or mixtures thereof (eg, cetearyl alcohol) and myristyl alcohol can be used as solid fatty substances. In another embodiment, isostearyl alcohol can be used as a liquid fatty substance.

  The fatty substance can be a wax. In the present specification, the term “wax” means that the fatty substance is in a substantially solid form at room temperature (25 ° C.) and atmospheric pressure (760 mmHg) and generally has a melting point of 35 ° C. or higher. As waxy fatty substances, waxes generally used in cosmetics can be used alone or in combination.

For example, the wax may be carnauba wax, microcrystalline wax, ozokerite, hydrogenated jojoba oil, polyethylene wax, such as wax sold under the name “Performalene 400 Polyethylene” by New Phase Technologies, silicone wax, such as Goldschmidt "Abil Wax 9810" poly, such as the product sold under the name (C ₂₄ -C ₂₈₎ alkyl methyl dimethylsiloxane, palm fat, Koster Keunen by the company "Kester Wax K82H" stearic acid C sold under the name ₂₀ -C ₄₀ alkyl, stearyl benzoate, shellac wax, and can be selected from a mixture thereof. For example, a wax selected from carnauba wax, candelilla wax, ozokerite, hydrogenated jojoba oil, and polyethylene wax can be used. In at least one embodiment, the wax is preferably selected from candelilla wax and ozokerite, and mixtures thereof.

  The fatty substance is preferably selected from polar oils.

The term “polar oil” means any lipophilicity at 25 ° C. where the solubility parameter δ _d characteristic of the dispersion interaction is greater than 16 and the solubility parameter δ _p characteristic of the polar interaction is strictly greater than 0. Means a compound. The solubility parameters δ _d and δ _p are defined according to the Hansen classification. For example, these polar oils can be selected from esters, triglycerides and ethers.

  The definition and calculation of the solubility parameter of the Hansen 3D solubility space is described in the paper C.M. Hansen, “The three dimensional solubility parameters”, J. Paint Technol, 39, 105 (1967).

According to this Hansen space,
-δ _d characterizes the London dispersion force resulting from the formation of dipoles induced during molecular effects,
-δ _{p characterizes} the Debye interaction force between permanent dipoles, and also the Caesom interaction force between induced and permanent dipoles,
- [delta] _h characterizes the specific interaction forces (e.g. hydrogen bonding, acid / base, donor / acceptor, etc.),
-δ _a is determined by the formula: δ _a = (δ _p ² + δ _h ² ) ^1/2 . The parameters δ _p , δ _h , δ _d and δ _a are represented by (J / cm ³ ) ^1/2 .

  The polar oil can be a volatile or non-volatile hydrocarbon oil.

  These oils may be of plant, mineral or synthetic origin.

  The term "polar hydrocarbon-based oil" is formed substantially from or even composed of carbon and hydrogen atoms, and optionally oxygen and nitrogen atoms, but silicon atoms are also fluorine atoms. Also means no oil. The polar hydrocarbon oil may contain an alcohol group, an ester group, an ether group, a carboxylic acid group, an amine group, and / or an amide group.

  Preferentially, the polar oil according to the invention has a surface tension of more than 10 mN / m at 25 ° C. and atmospheric pressure.

  The surface activity is measured by a static tension measurement method using the Dunuiring method.

  The principle of measurement is as follows (measurement carried out at 25 ° C. and atmospheric pressure).

Neutralize the mass of the ring with a tare. The ring is fully immersed in the liquid before evaluation and then withdrawn very slowly until the force is maximized. From this maximum force F _max , the surface tension is expressed as:
σ = F _max / 4πR f _corr (r, R, ρ)
_Where f _corr is the ring correction factor depending on the ring geometry and density ρ.

  Parameters r and R represent the inner and outer radii of the ring, respectively.

According to the first embodiment, the polar oil can be a non-volatile oil. In particular, the non-volatile polar oil can be selected from the following list of oils, and mixtures thereof:
- hydrocarbon-based polar oils such as phytosteryl esters, for example, phytosteryl oleate, isostearic acid phytosteryl and lauroyl glutamate phytosteryl / octyldodecyl (Ajinomoto Co., Eldew PS203), triglycerides consisting of fatty acid esters of glycerol, in particular C ₄ -C ₃₆ , especially triglycerides of fatty acids, which may have a chain length in the range of C _{18 to} C ₃₆ , these oils are optionally linear or branched, saturated or unsaturated; these oils are especially heptane Acid triglyceride or octanoic acid triglyceride, wheat germ oil, sunflower oil, grape seed oil, sesame seed oil (820.6 g / mol), corn oil, apricot oil, castor oil, shea butter oil, avocado oil, olive oil, soybean oil, sweet almond Oil, palm oil, rape seed oil, cottonseed oil, hazelnut , Macadamia oil, jojoba oil, alfalfa oil, poppy oil, pumpkin oil, pepo pumpkin oil, black currant oil, evening primrose oil, millet oil, barley oil, quinoa oil, rye oil, safflower oil, kukui oil, passiflora oil or mussels oil Or alternatively caprylic / capric triglycerides such as those sold by Steininerie Dubois or under the names Miglyol 810®, 812® and 818® by Dynamit Nobel Can be sold,
-Synthetic ethers containing 10 to 40 carbon atoms, for example dicaprylyl ether,
-Hydrocarbon system of the formula RCOOR ', where RCOO represents a carboxylic acid residue containing 2 to 40 carbon atoms and R' represents a hydrocarbon chain containing 1 to 40 carbon atoms Esters such as cetostearyl octoate, isopropyl alcohol esters such as isopropyl myristate or isopropyl palmitate, ethyl palmitate, 2-ethylhexyl palmitate, isopropyl stearate or isopropyl isostearate, isostearyl isostearate, octyl stearate, adipine Diisopropyl acid, heptanoic acid ester, especially isostearyl heptanoate, octanoic acid, decanoic acid or ricinoleic alcohol or polyhydric alcohol such as propylene glycol dioctanoate, cetyl octanoate, tridecyl octanoate, 4-diheptanoic acid and 2-ethylhexyl palmitate, alkyl benzoate, polyethylene glycol diheptanoate, 2-diethyl hexanoate propylene glycol, and mixtures thereof, C ₁₂ -C ₁₅ alcohol benzoate, hexyl laurate, neopentanoate esters, e.g., isodecyl neopentanoate, Isotridecyl neopentanoate, isostearyl neopentanoate and 2-octyldodecyl neopentanoate, isononanoic acid esters such as isononyl isononanoate, isotridecyl isononanoate and octyl isononanoate, oleyl erucate, lauroyl sarcosine isopropyl, diisopropyl sebacate, isocetyl stearate, Isodecyl neopentanoate, isostearyl behenate, and myristyl myristate,
Polyesters obtained by condensation of unsaturated fatty acid dimers and / or trimers with diols, for example those described in patent application FR 0 853 634, in particular obtained by condensation of dilinoleic acid with 1,4-butanediol Polyester. In this regard, the polymer sold under the name Viscoplast 14436H [INCI name: (dilinoleic acid / butanediol) copolymer] by the company Biosynthis, or a copolymer of polyol and dimerized diacid and its esters, such as Hailuscent ISDA in particular, Can be cited,
-Polyol esters and pentaerythritol esters, for example tetra (hydroxystearic acid / isostearic acid) dipentaerythrityl,
-Aliphatic alcohols containing 12 to 26 carbon atoms, such as octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol and oleyl alcohol,
- C ₁₂ -C ₂₂ higher fatty acids, such as oleic acid, linoleic acid and linolenic acid, and mixtures thereof,
-Optionally hydrocarbon-based and / or silicone-based fluorinated oils,
-Fatty acids containing 12 to 26 carbon atoms, for example oleic acid,
A dialkyl carbonate in which the two alkyl chains are optionally identical or different, for example dicaprylyl carbonate sold under the name Cetiol CC® by the company Cognis, and
Non-volatile oils of high molecular weight, for example between 400 and 10,000 g / mol, in particular between 650 and 10,000 g / mol, for example:
i) vinylpyrrolidone copolymers, such as vinylpyrrolidone / 1-hexadecene copolymer, Antaron V-216 (MW = 7300 g / mol) sold or manufactured by IS Japan
ii) esters, for example:
a) a linear fatty acid ester having a total carbon number in the range of 35 to 70, such as pentaerythrityl tetrapelargonate (MW = 697.05 g / mol),
b) hydroxylated esters such as polyglycerol-2 triisostearate (MW = 965.58 g / mol),
c) aromatic esters such as tridecyl trimellitate (MW = 757.19 g / mol), C ₁₂ -C ₁₅ alcohol benzoate, 2-phenylethyl benzoate and butyl octyl salicylate,
d) esters of C ₂₄ -C ₂₈ Branched fatty acids or fatty alcohols, for example, those described in patent application EP-A-0 955 039, in particular, citric acid Torii SOARER Kizil (MW = 1033.76g / mol ), Pentaerythrityl tetraisononanoate (MW = 697.05 g / mol), glyceryl triisostearate (MW = 891.51 g / mol), glyceryl tris (2-decyl) tetradecanoate (MW = 1143.98 g / mol), tetraisostearin Pentaerythrityl acid (MW = 1202.02 g / mol), polyglyceryl tetraisostearate-2 (MW = 12.32.04 g / mol) or tetrakis (2-decyl) tetradecanoic acid pentaerythrityl (MW = 1538.66 g / mol),
e) Esters and polyesters of dimer diol and monocarboxylic acid or dicarboxylic acid, for example, esters of dimer diol and fatty acid and esters of dimer diol and dimer carboxylic acid, for example, sold by Nippon Seika Co., Ltd. Lusplan DD-DA5® and Lusplan DD-DA7®, which are described in patent application US 2004-175 338, the contents of which are incorporated into this application by reference,
And
-A mixture of these.

Polar oil, C ₁₂ -C ₁₅ alcohol benzoate, diisopropyl sebacate, lauroyl sarcosine isopropyl, dicaprylyl carbonate, 2-phenylethyl benzoate, salicylate butyl octyl neopentanoate 2-octyldodecyl, dicaprylyl ether, isocetyl stearate, neopentane More preferably, it is selected from the group consisting of isodecyl acid, isononyl isononanoate, isopropyl myristate, isopropyl palmitate, isostearyl behenate, myristyl myristate, octyl palmitate, tridecyl trimellitate, and mixtures thereof.

  The amount of the fatty substance in the composition according to the present invention can be 80% by mass or less, preferably 70% by mass or less, more preferably 60% by mass or less, based on the total mass of the composition. It may be even more preferred that the amount of fatty substance in the composition according to the invention is not more than 55% by weight relative to the total weight of the composition.

  The amount of the fatty substance in the composition according to the present invention can be 30% by mass or more, preferably 40% by mass or more, more preferably 45% by mass or more, based on the total mass of the composition. It may be even more preferred that the amount of fatty substance in the composition according to the invention is 48% by weight or more relative to the total weight of the composition.

  Therefore, the amount of fatty substance in the composition according to the present invention is 30% to 80% by weight, preferably 40% to 70% by weight, more preferably 45% to 60% by weight relative to the total weight of the composition. It can be in the range of mass%. It may be even more preferred that the amount of fatty substance in the composition according to the invention is 48% to 55% by weight relative to the total weight of the composition.

(First water-insoluble particle)
The composition according to the invention comprises (c) at least one first water-insoluble particle which is different from component (b), as described above. For the purposes of the present invention, the term “water-insoluble particles” means that the water solubility at 25 ° C. is less than 1% by weight, preferably less than 0.1% by weight, more preferably less than 0.01% by weight, relative to the total weight of the particles. And most preferably means a particle having no solubility.

  According to the present invention, two or more kinds of first water-insoluble particles can be used in combination. Thus, a single type of first water-insoluble particles or a combination of different types of first water-insoluble particles can be used.

  (c) The first water-insoluble particles are preferably in a solid form. More preferably, (c) the first water-insoluble particles can be a powder.

  (c) The particle diameter of the first water-insoluble particles is not limited.

  In general, the maximum size of the (c) first water-insoluble particles that can be used in the present invention can be in the range of 0.1-100 μm, preferably 0.2-50 μm, more preferably 0.5-20 μm.

  (c) The average particle size (average of the maximum dimension) of the first water-insoluble particles may be preferably 500 nm or more. (c) The average particle diameter of the first water-insoluble particles can be preferably 750 nm or more, more preferably 1 μm or more, still more preferably 2 μm or more, preferably 100 μm or less, more preferably 50 μm or less, and more More preferably, it can be 10 μm or less. The average particle diameter can be measured by, for example, Nicomp Z380 by a dynamic light scattering method.

(c) the first water-insoluble particle has at least one formula (R) SiO _{3/2 wherein} R is independently selected from a hydrocarbon group and a hydroxyl group depending on the trifunctional unit, , At least one R is a hydrocarbon-based group], including at least one silicone resin.

  In other words, (c) the first water-insoluble particles contain at least one silicone resin containing at least one so-called T unit.

  As used herein, the term “resin” means a cross-linked or non-cross-linked three-dimensional structure. Examples of polysiloxane T resins that may be mentioned include silsesquioxane and siloxysilicate.

  The name of the silicone resin is known by the designation MDTQ, and the resin is described according to the various siloxane monomer units it contains, and each letter of MDTQ characterizes the type of unit.

The letter M represents, for example, a monofunctional unit of the formula (CH ₃ ) ₃ SiO _1/2 , the silicon atom being bonded to only one oxygen atom in the polymer containing this unit.

The letter D means a bifunctional unit, for example (CH ₃ ) ₂ SiO _{2/2 in} which a silicon atom is bonded to two oxygen atoms.

The letter T represents for example a trifunctional unit of the formula (CH ₃ ) SiO _3/2 .

  The silicone resin preferably contains at least one polyalkylsilsesquioxane, more preferably at least one polymethylsilsesquioxane. More preferably, the silicone resin comprises at least one polyalkylsilsesquioxane, even more preferably at least one polymethylsilsesquioxane.

Of the M, D and T units exemplified above, at least one of the methyl groups may be substituted. In some embodiments, at least one silicone resin comprising at least one trifunctional unit of formula (R) SiO _3/2 is of the formula: ((R ′) SiO _3/2 ) _x [wherein x ranges from 100 to 500 and R ′ is independently selected from a hydrocarbon-based group or hydroxyl group containing 1 to 10 carbon atoms, depending on the trifunctional unit, provided that at least one R 'Is a hydrocarbon group]] is selected from silsesquioxane. In some embodiments, the hydrocarbon-based group containing 1-10 carbon atoms is a methyl group. In some embodiments, at least one silicone resin comprising at least one trifunctional unit of formula (R) SiO _3/2 is of the formula: ((R ′) SiO _3/2 ) _x [wherein x ranges from 100 to 500, and R ′ is independently selected from units CH ₃ , hydrocarbon-based groups containing 2 to 10 carbon atoms, or hydroxyl groups, provided that at least one R ′ is a hydrocarbon group]].

Finally, the letter Q means the tetrafunctional unit SiO _4/2 (in this case the silicon atoms are bonded to 4 oxygen atoms, which themselves are bonded to the rest of the polymer).

  Various resins with different properties can be obtained from these different units, the properties of these polymers being the type of monomer (or unit), the type and number of substituents, the length of the polymer chain, the degree of branching, In addition, it varies depending on the size of the side chain.

  The silicone resin contains at least one T unit. Thus, for example, it can be T resin, MT resin, MTQ resin or MDTQ resin.

  In some embodiments, the unit composition of silicone resin is at least 50% T units, or at least 80% T units.

  In some embodiments, the T resin can contain M, D, and Q units such that at least 80 mol% or at least 90 mol% of the total amount of silicone is T units. The T resin can also contain hydroxyl groups and / or alkoxy groups. The total mass of hydroxyl functional groups of the T resin can range from 2% to 10%, the total mass of alkoxy functional groups can be up to 20%, and in some embodiments the hydroxyl functional groups The total mass of can range from 4% to 8% and the total mass of alkoxy functional groups can be up to 10%.

Silicone resins have the following formula: ((CH ₃ ) SiO _3/2 ) _x (wherein x can be up to several thousand, and the CH ₃ group is an R group, as already described in the definition of the T unit. It may be selected from silsesquioxanes which may be substituted]. The number x of T units in the silsesquioxane may be 500 or less, or may be in the range of 50 to 500. The molecular weight of the silicone resin may be in the range of 500 to 50,000 g / mol, 500 to 20,000 g / mol, or 500 to 10,000 g / mol.

  Silicone resin can form a film. Looking in detail, not all silsesquioxanes form a film; for example, highly polymerized polymethylsilsesquioxane, for example, Tospearl (Momentive Performance Materials Japan GK) Trademark) 145A (average particle size is 4.5 μm) and Tospearl® 2000B (average particle size is 6 μm) or KMP590 manufactured by Shin-Etsu Chemical Co., Ltd. are insoluble and do not form a film. The molecular weight of these polymethylsilsesquioxanes is difficult to measure, but generally there are more than 1000 T units.

Examples of silicone resins containing at least one T unit include the following. A polysyl of the formula ((R) SiO _3/2 ) _x (T units), wherein x is greater than 100 and the R group can independently be methyl or other substituents as defined above Sesquioxanes; polymethylsilsesquioxanes, polysilsesquioxanes where R is a methyl group, such polymethylsilsesquioxanes are described, for example, in U.S. Pat.No. 5,246,694; R is phenyl The group polyphenylsilsesquioxane, this compound and its synthesis are described, for example, in patent application US 2004/0180011.

Examples of commercially available polymethylsilsesquioxane resins that may be mentioned include the following:
What is sold by Wacker under the name Resin MK, for example, Belsil PMS MK, a polymer containing CH ₃ SiO _3/2 repeating units (T units), up to 1% by weight of (CH ₃ ) ₂ A polymer that can also contain ₂ SiO _2/2 units (D units) and has an average molecular weight of about 10,000 g / mol. The polymers are considered to be “cage” and “ladder” types as shown in the figure below. The average molecular weight of each unit of the “cage” type is calculated to be 536 g / mol. The majority of polymers are of the “ladder” type with terminal ethoxy groups. This ethoxy group accounts for 4.5% by weight of the polymer. Since this end group can react with water, small amounts of various amounts of SiOH groups may also be present.

What is sold under the reference name KR-220L by Shin-Etsu Chemical Co., Ltd. [consisting of a T unit of the formula CH ₃ SiO _3/2 and having a Si—OH (silanol) end group], KR-242A Those sold under the reference name [including 98% T units and 2% dimethyl D units and having Si-OH end groups], or those sold under the reference name KR-251 [88% T units and It contains 12% dimethyl D units and has Si-OH end groups].

Examples of commercially available polypropylsilsesquioxane resins that may be mentioned include:
Sold by Dow Corning under the reference name Dow Corning 670 Fluid [polypropylsilsesquioxane diluted with D5]
Is included.

Examples of commercially available polyphenylsilsesquioxane resins that may be mentioned include:
Sold under the reference name Dow Corning 217 Flake Resin by Dow Corning [polyphenylsilsesquioxane with silanol end groups],
Includes those sold by Wacker under the reference name Belsil SPR 45 VP.

  In some embodiments, the silicone resin is soluble or dispersible in the composition. The silicone resin can be soluble in volatile silicones and organic solvents. In some embodiments, the silicone resin is solid at 25 ° C.

  The composition may contain a plurality of types of silicone resins containing at least one T unit. The at least one silicone resin comprising at least one T unit can be present in the composition at a concentration ranging from 0.1% to 20%, 0.2% to 15%, or 0.5% to 10%.

In some embodiments, the mass ratio of (1) at least one silicone resin comprising at least one trifunctional unit of formula (R) SiO _3/2 to (2) at least one volatile solvent is The range is 1/200 to 1/10.

  The amount of the (c) first water-insoluble particles in the composition according to the present invention is 20% by mass or less, preferably 10% by mass or less, more preferably 5% by mass or less, based on the total mass of the composition. be able to. It may be even more preferred that the amount of (c) first water-insoluble particles in the composition according to the invention is not more than 3% by weight relative to the total weight of the composition.

  The amount of the (c) first water-insoluble particles in the composition according to the present invention is 0.01% by mass or more, preferably 0.05% by mass or more, more preferably 0.1% by mass or more with respect to the total mass of the composition. be able to. It may be even more preferred that the amount of (c) first water-insoluble particles in the composition according to the invention is 0.2% by weight or more relative to the total weight of the composition.

  Therefore, the amount of the (c) first water-insoluble particles in the composition according to the present invention is 0.01 mass% to 20 mass%, preferably 0.05 mass% to 10 mass%, based on the total mass of the composition. Preferably, it can be in the range of 0.1% by mass to 5% by mass. It may be even more preferred that the amount of (c) first water-insoluble particles in the composition according to the invention is 0.2% to 3% by weight relative to the total weight of the composition.

(Second water-insoluble particles)
The composition according to the invention comprises at least one second water-insoluble particle, as described above, which is different from both component (b) and (c) (d). For the purposes of the present invention, the term “water-insoluble particles” means that the water solubility at 25 ° C. is less than 1% by weight, preferably less than 0.1% by weight, more preferably less than 0.01% by weight, relative to the total weight of the particles. And most preferably means a particle having no solubility.

  According to the present invention, two or more kinds of second water-insoluble particles can be used in combination. Thus, a single type of second water-insoluble particles or a combination of different types of second water-insoluble particles can be used.

  (d) The second water-insoluble particles are preferably in a solid form. More preferably, (d) the second water-insoluble particles can be a powder.

  (d) The particle size of the second water-insoluble particles is not limited.

  In general, (d) the second water-insoluble particles that can be used in the present invention can have a maximum dimension in the range of 0.1 to 100 μm, preferably 0.2 to 50 μm, more preferably 0.5 to 20 μm.

  (d) The average particle size (average of the maximum dimension) of the second water-insoluble particles may be preferably 500 nm or more. (d) The average particle size of the second water-insoluble particles is preferably 750 nm or more, more preferably 1 μm or more, even more preferably 2 μm or more, preferably 100 μm or less, more preferably 50 μm or less, and more More preferably, it can be 10 μm or less. The average particle diameter can be measured by, for example, Nicomp Z380 by a dynamic light scattering method.

  (d) The second water-insoluble particles contain hydrophobic silica. (d) The second water-insoluble particles are preferably made of hydrophobic silica.

  The term “hydrophobic silica” is understood in the context of the present invention to mean both pure hydrophobic silica and particles coated with hydrophobic silica.

  According to certain embodiments, the hydrophobic silica that can be used in the compositions of the present invention is amorphous and of fume origin. It is preferably provided in powder form.

Fume-derived amorphous hydrophobic silica is obtained from hydrophilic silica. Hydrophilic silica is obtained by thermally decomposing silicon tetrachloride (SiCl ₄ ) in a continuous flame at 1000 ° C. in the presence of hydrogen and oxygen. They are then rendered hydrophobic by treatment with halogenated silanes, alkoxysilanes or silazanes. Hydrophobic silica differs from the starting hydrophilic silica in that, among other things, the density of silanol groups is low and the adsorption of water vapor is low.

According to this embodiment, the hydrophobic silica is preferably selected from silica having a specific surface area of 50 to 500 m ² / g and a number average particle size in the range of 3 to 50 nm. These are more particularly hydrophobic silicas listed in the following table, and mixtures thereof.

  According to this embodiment, the hydrophobic silica used in the composition of the present invention is also fully or partially coated with silica particles, in particular completely or partially coated with hydrophobic silica. It is also possible to consist of pigments and metal oxides coated with inorganic particles such as hydrophobic silica. These particles can also have optical properties in the product and on the skin, for example, they can have a matte-feeling effect or a slight whitening effect.

  As the hydrophobic silica, it is preferable to use a hydrophobic fumed silica surface-treated with dimethylsiloxane, for example, one sold under the name Aerosil R972 (INCI name: dimethylsilylated silica) by Evonik Degussa.

According to another particular embodiment, the hydrophobic silica that can be used in the composition of the invention has a specific surface area (SW) per mass unit in the range of 500-1500 m ² / g, and a volume average Hydrogel silica airgel particles with a size expressed as a diameter (D [0.5], also known as volume median diameter Dv50) in the range of 1-1500 μm.

  Silica airgel is a porous material obtained by replacing (by drying) the liquid component of silica gel with air.

Silica aerogels are generally synthesized in a liquid medium by a sol-gel process and then dried by extraction of a supercritical fluid (most commonly used is supercritical CO ₂ ). This type of drying makes it possible to avoid pore and material shrinkage. The sol-gel process and various drying operations are described in detail in Brinker CJ and Scherer GW, Sol-Gel Science, New York, Academic Press, 1990.

Airgel particles of hydrophobic silica used in the present invention has a specific surface area per mass unit (SW) is, 500 to 1500 ² / g, preferably 600~1200m ² / g, further the good 600~800m ² / The size expressed as volume average diameter (D [0.5], also known as volume median diameter Dv50) is in the range of 1 to 1500 μm, better 1 to 1000 μm, preferably 1 to 100 μm In particular, it is in the range of 1 to 30 μm, more preferably 5 to 25 μm, even better 5 to 20 μm, and even better 5 to 15 μm.

  According to one embodiment, the hydrophobic silica airgel particles used in the present invention have a size expressed as a volume average diameter (D [0.5], also known as volume median diameter Dv50) of 1 to It is in the range of 30 μm, preferably 5-25 μm, better 5-20 μm and even better 5-15 μm.

  The specific surface area per mass unit can be determined by the nitrogen absorption method known as BET (Brunauer-Emmett-Teller) method, which is described in The Journal of the American Chemical Society, Vol. 60, 309, 1938. It is described in February and corresponds to the international standard ISO 5794/1 (Annex D). The BET specific surface area corresponds to the total specific surface area of the particles under consideration. The size of the airgel silica particles can be measured by static light scattering using a Malvern MasterSizer 2000 model, which is a commercially available particle size analyzer. Data is processed based on Mie scattering theory. This theory is accurate for isotropic particles, and in the case of non-spherical particles, it is possible to determine the “effective” particle size. This theory is described in particular in Van de Hulst, H.C., "Light Scattering by Small Particles", Chapters 9 and 10, Wiley, New York, 1957 publication.

According to an advantageous embodiment, the hydrophobic silica airgel particles used in the present invention have a specific surface area (SW) per mass unit in the range of 600 to 800 m ² / g and a volume average diameter (D [0.5 , Also known as volume median diameter Dv50) is in the range of 5-20 μm, and even better is in the range of 5-15 μm.

Airgel silica particles used in the present invention, the filling density ([rho) is ^{0.04g / cm 3 ~0.10g / cm 3} , preferably advantageously ranges from 0.05g / cm ³ ~0.08g / cm ³ possible.

In the context of the present invention, this density, known as packing density, can be evaluated according to the following protocol.
Pour 40 g of powder into a graduated cylinder, then place the graduated cylinder on a Stampf Volumeter Stav 2003 device and then subject the graduated cylinder to 2500 continuous filling operations (the volume difference between two consecutive tests is Repeat this operation until less than 2%), then measure the final volume Vf of the filled powder directly with a graduated cylinder. The packing density is determined by the ratio w / Vf, in this example 40 / Vf (Vf is expressed in cm ³ and w is expressed in g).

According to one embodiment, the hydrophobic silica airgel particles used in the present invention have a specific surface area SV per volume unit of 5 to 60 m ² / cm ³ , preferably 10 to 50 m ² / cm ³ , and better. Is in the range of 15-40 m ² / cm ³ .

The specific surface area per volume unit is the relation: SV = SW × p (where p is the packing density expressed in g / cm ³ and SW is expressed in m ² / g as defined above. Specific surface area per mass unit).

  Preferably, the hydrophobic silica airgel particles according to the invention have an oil absorption capacity measured at the wet point of 5 to 18 ml / g, preferably 6 to 15 ml / g, better still 8 to 12 ml / g. is there.

  The absorption capacity, measured at the wet point, denoted Wp, corresponds to the amount of oil that needs to be added to 100 g of particles in order to obtain a homogeneous paste.

  It is measured according to the “wet point” method or the method for determining the oil uptake of powders as described in Standard NF T 30-022. It corresponds to the amount of oil adsorbed on and / or absorbed into the available surface of the powder by measuring the wet point as described below.

  An amount of powder w = 2 g is placed on a glass plate and then oil (isononyl isononanoate) is added dropwise. Add 4-5 drops of oil to the powder and then mix using a spatula and continue to add oil until an aggregate of oil and powder is formed. From the time of formation, the oil is added at a rate of one drop at a time, followed by grinding the mixture with a spatula. Stop oil addition when a firm and smooth paste is obtained. This paste must be able to be spread on a glass plate without breaking or forming lumps. The volume of oil used, Vs (expressed in ml) is then recorded.

  The oil intake is equivalent to the ratio Vs / w.

  The airgel used according to the present invention is preferably a hydrophobic silica airgel of silylated silica (INCI name: silylated silica).

  The term “hydrophobic silica” means that the surface is functionalized with a silyl group Si—Rn, such as a trimethylsilyl group, so that the surface is a silylating agent, such as a halogenated silane, such as an alkylchlorosilane, a siloxane, in particular dimethylsiloxane. Is understood to mean any silica which has been treated, for example with hexamethyldisiloxane, or silazane.

  Reference can be made to the literature, US Pat. No. 7,470,725 for the preparation of hydrophobic silica airgel particles whose surface is modified by silylation.

  Of particular use are airgel particles of hydrophobic silica (trimethylsiloxylated silica) whose surface is modified with trimethylsilyl groups.

Examples of the hydrophobic silica airgel that can be used in the present invention include an airgel sold under the name VM-2260 (INCI name: silylated silica) by Dow Corning, and the particles have an average The diameter is approximately 1000 microns and the specific surface area per mass unit is in the range of 600-800 m ² / g.

  Mention may also be made of the aerogels sold by Cabot under the reference names Aerogel TLD 201, Aerogel OGD 201 and Aerogel TLD 203.

More specifically, the airgel sold under the name Aerogel Fine Particles VM-2270 (INCI name: silylated silica) by Dow Corning will be used, and the particles will have an average diameter in the range of 5-15 microns. And the specific surface area per mass unit is in the range of 600 to 800 m ² / g.

  The amount of the (d) second water-insoluble particles in the composition according to the present invention is 20% by mass or less, preferably 10% by mass or less, more preferably 5% by mass or less, with respect to the total mass of the composition. be able to. It may be even more preferred that the amount of (d) second water-insoluble particles in the composition according to the invention is 3% by weight or less, based on the total weight of the composition.

  The amount of the (d) second water-insoluble particles in the composition according to the present invention is 0.01% by mass or more, preferably 0.05% by mass or more, more preferably 0.1% by mass or more with respect to the total mass of the composition. be able to. It may be even more preferred that the amount of (d) second water-insoluble particles in the composition according to the invention is 0.2% by weight or more relative to the total weight of the composition.

  Therefore, the amount of the (d) second water-insoluble particles in the composition according to the present invention is 0.01 mass% to 20 mass%, preferably 0.05 mass% to 10 mass%, based on the total mass of the composition. Preferably, it can be in the range of 0.1% by mass to 5% by mass. It may be even more preferred that the amount of (d) second water-insoluble particles in the composition according to the invention is from 0.2% to 3% by weight relative to the total weight of the composition.

(water)
The composition according to the invention may comprise water.

  The composition according to the invention can be in the form of an emulsion.

  The amount of water in the composition according to the present invention can be 1% by mass or more, preferably 5% by mass or more, more preferably 10% by mass or more, based on the total mass of the composition. The amount of water in the composition according to the present invention can be 50% by mass or less, preferably 45% by mass or less, more preferably 40% by mass or less, based on the total mass of the composition. Therefore, the amount of water in the composition according to the present invention can be 1-50% by weight, preferably 5-45% by weight, more preferably 10-40% by weight, based on the total weight of the composition. .

(Organic UV filter)
The composition according to the invention comprises (e) at least one organic UV filter. When two or more organic UV filters are used, they may be the same or different. The organic UV filter can be selected from lipophilic or oil-soluble organic UV filters, hydrophilic or water-soluble organic UV filters, and mixtures thereof.

  (e) An organic UV filter may be present in (a) the continuous phase of the composition according to the invention.

  The amount of the (e) organic UV filter in the composition according to the present invention can be 0.01% by mass or more, preferably 0.1% by mass or more, more preferably 1% by mass or more with respect to the total mass of the composition. .

  The amount of the (e) organic UV filter in the composition according to the present invention can be 50% by mass or less, preferably 40% by mass or less, more preferably 30% by mass or less, with respect to the total mass of the composition. .

  Therefore, the amount of (e) organic UV filter in the composition according to the invention is 0.01% to 50% by weight, preferably 0.1% to 40% by weight, more preferably 1%, relative to the total weight of the composition. It can be in the range of mass% to 30 mass%.

(Lipophilic or oil-soluble organic UV filter)
The composition according to the invention can comprise (e) at least one lipophilic or oil-soluble organic UV filter as organic UV filter. When two or more lipophilic or oil-soluble organic UV filters are used, they may be the same or different.

  As used herein, the term “lipophilic or oil-soluble organic UV filter” is used to mask UV radiation and be completely soluble in the molecular state in the oil phase, or in colloidal form in the oil phase. It is understood to mean any agent that can be dispersed (eg in micellar form). The “lipophilic or oil-soluble organic UV filter” has an oil solubility of 0.5 g or more per 100 ml of isododecane. The lipophilic or oil-soluble organic UV filter used in the present invention can be active in the UV-A and / or UV-B region. The lipophilic or oil-soluble organic UV filter may be hydrophobic or water-insoluble.

  The lipophilic or oil-soluble organic UV filter may be solid or liquid. The terms “solid” and “liquid” mean solid and liquid, respectively, at 25 ° C. and 1 atm.

  All kinds of lipophilic or oil-soluble organic UV filters can be used in the composition according to the invention. Preferably, the lipophilic or oil-soluble organic UV filter comprises an anthranyl compound; a dibenzoylmethane compound; a cinnamic acid compound; a salicylic acid compound; a camphor compound; a benzophenone compound; a β, β-diphenyl acrylate compound; a triazine compound; and a benzotriazole compound. Benzalmalonate compound; benzimidazole compound; imidazoline compound; bis-benzoazolyl compound; p-aminobenzoic acid (PABA) compound; methylene bis (hydroxyphenylbenzotriazole) compound; benzoxazole compound; shielding polymer and shielding silicone; α- It can be selected from the group consisting of dimers derived from alkyl styrene; 4,4-diarylbutadiene compounds; guaiazulene and its derivatives; rutin and its derivatives; and mixtures thereof.

  Examples of lipophilic or oil-soluble organic UV filters include those indicated by their INCI names below and mixtures thereof.

-Anthranilate: Menthyl anthranilate marketed under the trade name “Neo Heliopan MA” by Haarmann and Reimer.

Dibenzoylmethane compounds: in particular butylmethoxydibenzoylmethane sold under the trade name “Parsol 1789” by the company Hoffmann-La Roche; and isopropyldibenzoylmethane.

-Cinnamic acid compounds: In particular, ethylhexyl methoxycinnamate; isopropyl methoxycinnamate; isopropoxymethoxycinnamate sold under the trade name "Parsol MCX" by BASF; "Neo Heliopan E" by Haarmann and Reimer Isoamyl methoxycinnamate (2-ethoxyethyl-4-methoxycinnamate); methoxycinnamate DEA; methyl diisopropylcinnamate; and dimethoxycinnamate ethylhexanoate Glyceryl.

-Salicylic acid compounds: homosalate marketed under the trade name `` Eusolex HMS '' by Rona / EM Industries; homohexyl salicylate sold under the trade name `` Neo Heliopan OS '' by Haarmann and Reimer; salicylic acid Glycol; butyl octyl salicylate; phenyl salicylate; dipropylene salicylate marketed under the trade name “Dipsal” by Scher; and TEA salicylic acid marketed under the trade name “Neo Heliopan TS” by Haarmann and Reimer.

-Camphor compounds, especially benzylidene camphor derivatives: 3-benzylidene camphor manufactured under the trade name "Mexoryl SD" by Chimex; 4-methylbenzylidene camphor sold under the trade name "Eusolex 6300" by Merck Benzylidene camphor sulfonic acid manufactured under the trade name "Mexoryl SL" by Chimex; camphor benzalkonium methosulfate produced under the trade name "Mexoryl SO" by Chimex; and " Polyacrylamide methylbenzylidene camphor manufactured under the trade name Mexoryl SW.

-Benzophenone compound: Benzophenone-1 (2,4-dihydroxybenzophenone) marketed under the trade name `` Uvinul 400 '' by BASF; benzophenone-2 (marketed under the trade name `` Uvinul D50 '' by BASF Tetrahydroxybenzophenone); benzophenone-3 (2-hydroxy-4-methoxybenzophenone) or oxybenzone sold under the trade name `` Uvinul M40 '' by BASF; sold under the trade name `` Uvinul MS40 '' by BASF Benzophenone-4 (hydroxymethoxybenzophenone sulfonic acid); benzophenone-5 (sodium hydroxymethoxybenzophenone sulfonate); benzophenone-6 (dihydroxydimethoxybenzophenone) sold under the trade name `` Helisorb 11 '' by Norquay; American Cyanamid Commercially available under the trade name Spectra-Sorb UV-24 Enon-8; benzophenone-9 (disodium dihydroxydimethoxybenzophenone disulfonate) sold under the trade name `` Uvinul DS-49 '' by BASF; benzophenone-12, and n-hexyl 2- (4-diethylamino-2 -Hydroxybenzoyl) benzoate (UVINUL A + by BASF).

β, β-diphenyl acrylate compounds: in particular octocrylene sold under the trade name “Uvinul N539” by the company BASF; and in particular ethocrylene sold under the trade name “Uvinul N35” by the company BASF.

-Triazine compound: diethylhexylbutamide triazone marketed by Sigma 3V under the name `` Uvasorb HEB ''; 2,4,6-tris (dineopentyl 4′-aminobenzalmalonate) -s-triazine, Bis-ethylhexyloxyphenol methoxyphenyltriazine marketed under the trade name << TINOSORB S >> by CIBA GEIGY and ethylhexyltriazone marketed under the trade name << UVINUL T150 >> by BASF.

-Benzotriazole compounds, in particular phenylbenzotriazole derivatives: branched and linear 2- (2H-benzotriazol-2-yl) -6-dodecyl-4-methylpheno, and those described in USP 5240975 .

-Benzalmalonate compounds: Dineopentyl 4'-methoxybenzalmalonate, and polyorganosiloxanes containing benzalmalonate functional groups, such as the polysilicone marketed under the name "Parsol SLX" by the company Hoffmann-LaRoche -15.

-Benzimidazole compounds, in particular phenylbenzimidazole derivatives.

-Imidazoline compound: ethylhexyl dimethoxybenzylidene dioxoimidazoline propionate.

Bis-benzoazolyl compounds: derivatives described in EP-669,323 and US Pat. No. 2,463,264.

-Para-aminobenzoic acid compounds: PABA (p-aminobenzoic acid), ethyl PABA, ethyldihydroxypropyl PABA, pentyldimethyl PABA, especially marketed under the trade name `` Escalol 507 '' by IPS Japan Ltd. Dimethyl PABA ethylhexyl, glyceryl PABA, and PEG-25 PABA marketed by BASF under the trade name “Uvinul P25”.

A methylene bis- (hydroxyphenylbenzotriazole) compound, for example 2,2′-methylenebis [6- (2H-benzotriazole-2, sold in solid form under the trade name “Mixxim BB / 200” by Fairmount Chemical -Yl) -4-methyl-phenol], marketed in the finely divided form of aqueous dispersions under the trade name "Tinosorb M" by BASF or "MixximBB / 100" by Fairmount Chemical. 2,2′-methylenebis [6- (2H-benzotriazol-2-yl) -4- (1,1,3,3-tetramethylbutyl) phenol], and U.S. Pat.Nos. 5,237,071, 5,166,355, Derivatives described in GB-2,303,549, DE-197,26,184 and EP-893,119, and
Drometrizole trisiloxane as shown below, marketed under the trade name "Silatrizole" by Rhodia Chimie or under the trade name "Mexoryl XL" by L'Oreal.

-Benzoxazole compound: 2,4-bis [5-1 (dimethylpropyl) benzoxazol-2-yl- (4-phenyl) imino] -6- () marketed by Sigma 3V under the name Uvasorb K2A 2-Ethylhexyl) imino-1,3,5-triazine.

-Shielding polymers and shielding silicones: Silicones described in WO 93/04665.

-Dimer derived from α-alkylstyrene: a dimer described in DE-19855649.

-4,4-diarylbutadiene compound: 1,1-dicarboxy (2,2'-dimethylpropyl) -4,4-diphenylbutadiene.

Lipophilic or oil-soluble organic UV filters
Butylmethoxydibenzoylmethane, ethylhexyl methoxycinnamate, homosalate, ethylhexyl salicylate, octocrylene, benzophenone-3, benzophenone-4, benzophenone-5, n-hexyl 2- (4-diethylamino-2-hydroxybenzoyl) benzoate, 1, 1 '-(1,4-piperazinediyl) bis [1- [2- [4- (diethylamino) -2-hydroxybenzoyl] phenyl] -methanone, 4-methylbenzylidene camphor, ethylhexyltriazone, bis-ethylhexyloxyphenol Methoxyphenyltriazine, diethylhexylbutamidotriazone, 2,4,6-tris (dineopentyl 4'-aminobenzalmalonate) -s-triazine, 2,4,6-tris (diisobutyl4'-aminobenzalmalo) Nate) -s-triazine, 2,4-bis- (n-butyl 4'-aminobenzalmalonate) -6-[(3- {1,3,3,3- Tramethyl-1-[(trimethylsilyloxy] disiloxanyl} propyl) amino] -s-triazine, 2,4,6-tris- (di-phenyl) -triazine, 2,4,6-tris- (ter-phenyl)- Triazine, methylene bis-benzotriazolyl tetramethylbutylphenol, drometrizole trisiloxane, polysilicone-15, dineopentyl 4'-methoxybenzalmalonate, 1,1-dicarboxy (2,2'-dimethylpropyl) -4 , 4-Diphenylbutadiene, 2,4-bis [5-1 (dimethylpropyl) benzoxazol-2-yl- (4-phenyl) imino] -6- (2-ethylhexyl) imino-1,3,5-triazine Preferably, it is selected from the group consisting of camphor benzalkonium methosulfate and mixtures thereof.

  The amount of lipophilic or oil-soluble organic UV filter in the composition according to the invention is 1-50% by weight, preferably 5-40% by weight, more preferably 10-30% by weight, based on the total weight of the composition. %.

(Hydrophilic or water-soluble organic UV filter)
The composition according to the present invention may include (e) at least one hydrophilic or water-soluble organic UV filter as the organic UV filter. When two or more hydrophilic or water-soluble organic UV filters are used, they may be the same or different.

  As used herein, the term `` hydrophilic or water-soluble organic UV filter '' masks UV radiation and can be completely dissolved in the molecular state in the aqueous phase, or in colloidal form in the aqueous phase (e.g. It is understood to mean any agent that can be dispersed (in micellar form). The “hydrophilic or water-soluble organic UV filter” has a water solubility of 0.5 g or more per 100 ml of water. The hydrophilic or water-soluble organic UV filter used in the present invention can be active in the UV-A and / or UV-B region.

  The hydrophilic or water-soluble organic UV filter may be solid or liquid. The terms “solid” and “liquid” mean solid and liquid, respectively, at 25 ° C. and 1 atm.

  There is no limitation on the type of hydrophilic or water-soluble organic UV filter. All kinds of hydrophilic or water-soluble organic UV filters can be used in the composition. Two or more different types of hydrophilic or water-soluble organic UV filters can be used in combination. Thus, a single type of hydrophilic or water-soluble organic UV filter, or a combination of different types of hydrophilic or water-soluble organic UV filters can be used.

The hydrophilic or water-soluble organic UV filter is not limited to the following,
Terephthalylidene dicamphorsulfonic acid and its salts, such as those manufactured by Chimex under the name "Mexoryl SX",
Bisbenzoxazolyl derivatives, such as those described in patents EP 669 323 and US 2,463,264, and more particularly the compound phenyldibenzimidazole tetra sold under the trade name “Neo Heliopan AP” by Haarmann and Reimer Disodium sulfonate and salts thereof,
p-aminobenzoic acid (PABA) derivatives such as PABA, glyceryl PABA and PEG-25 PABA, and salts thereof such as those sold under the name `` Uvinul P25 '' by the company BASF,
Phenylbenzimidazolesulfonic acid and its salts, such as those sold under the name "Eusolex 232", in particular by Merck
Ferulic acid and its salts,
Salicylic acid and its salts,
Methoxycinnamic acid DEA and its salts,
Benzylidene camphorsulfonic acid and its salts, such as those manufactured by Chimex under the name "Mexoryl SL",
Camphor benzalkonium methosulfate and its salts, such as those manufactured by Chimex under the name "Mexoryl SO",
Benzophenone-4 and its salts, such as those sold under the trade name "Uvinul MS40" by BASF,
Benzophenone-5 and its salts,
Benzophenone-9 and its salts,
(+)-10-camphorsulfonic acid and its salts,
2-hydroxy-4-methoxybenzophenone-5-sulfonic acid and salts thereof, and disodium phenyldibenzimidazole tetrasulfonate and salts thereof are included.

  Hydrophilic or water-soluble organic UV filters include terephthalylidene dicamphor sulfonic acid and its salt, phenylbenzimidazole sulfonic acid and its salt, (+)-10-camphor sulfonic acid and its salt, 2-hydroxy-4- It can be selected from the group consisting of methoxybenzophenone-5-sulfonic acid and its salts, disodium phenyldibenzimidazole tetrasulfonate and its salts, and mixtures thereof.

  The amount of the hydrophilic or water-soluble organic UV filter in the composition according to the invention is 0.1 to 15% by weight, preferably 0.5 to 10% by weight, more preferably 1 to 5% by weight relative to the total weight of the composition. %.

(Surfactant)
The composition according to the invention is preferably in the form of a pickering emulsion.

  The composition according to the present invention optionally contains at least one surfactant in an amount of 1% by weight or less, preferably 0.1% by weight or less, more preferably 0.01% by weight or less, based on the total weight of the composition. Most preferably, it does not contain a surfactant.

  In one embodiment, the composition according to the invention is substantially free of surfactant. The expression “substantially free of surfactant” means that the composition according to the invention contains no surfactant or at least one surfactant, based on the total mass of the composition, by 1 mass. % Or less, preferably 0.1% by mass or less, more preferably 0.01% by mass or less.

  The surfactant can be selected from the group consisting of an anionic surfactant, an amphoteric surfactant, a cationic surfactant, and a nonionic surfactant. Two or more surfactants can be used in combination. For this reason, a single type of surfactant or a combination of different types of surfactants can be used. Preferably, according to the present invention, the “surfactant” is capable of forming a foam with water without additives.

(Optional ingredients)
The composition according to the invention may also comprise other effective amounts of agents known previously in whitening compositions or coloring compositions, for example (c) first water-insoluble particles. And (d) fillers and pigments other than the second water-insoluble particles, pH adjusting agents such as acids and bases, sequestering agents such as EDTA and etidronic acid, inorganic UV screening agents, silicones other than those mentioned above, such as Silicone oils, preservatives, vitamins or provitamins such as panthenol, opacifiers, fragrances, plant extracts, cationic polymers and the like.

The composition according to the invention may comprise an aqueous medium. The aqueous medium in the composition according to the invention comprises water. The aqueous phase may further comprise at least one organic solvent. Thus, the organic solvent is preferably water miscible. As the organic solvent, for example, C ₁ -C ₄ alkanols, such as ethanol and isopropanol; polyols and polyol ethers, for example, glycerol, 2-butoxyethanol, propylene glycol, monomethyl ether of propylene glycol, monoethyl ether and monomethyl ether of diethylene glycol; As well as aromatic alcohols such as benzyl alcohol and phenoxyethanol; similar products; and mixtures thereof.

  The organic water-soluble solvent can be present in an amount ranging from 1 to 40% by weight, preferably from 1 to 30% by weight, more preferably from 5 to 20% by weight, based on the total weight of the composition.

  The pH of the composition according to the invention can generally be 4 to 12, for example. The pH can range from 5 to 11, preferably from 6 to 10, and may be adjusted to the desired value using pH adjusters well known in the art.

The viscosity of the composition according to the present invention is not particularly limited. Viscosity can be measured at 25 ° C. with a viscometer or rheometer, preferably with a conical plate geometry. Preferably, the viscosity of the composition according to the invention can be in the range of ¹ to 2000 Pa.s, preferably ¹ to 1000 Pa.s, for example at 25 ° C. and 1 s ⁻¹ .

[Preparation]
The composition according to the present invention can be prepared by mixing the above essential and optional ingredients in a conventional manner.

For example, the composition according to the invention is
(a) ingredients for continuous phase,
(b) ingredients for the dispersed phase,
(c) at least one first water-insoluble particle as described above,
(d) at least one second water-insoluble particle as described above,
(e) at least one organic UV filter, and optionally at least one surfactant (provided that the amount of surfactant is not more than 1% by weight relative to the total weight of the composition)
Can be prepared by a method including a step of mixing.

  Any of the optional ingredients other than the surfactant can be further mixed.

  As explained above, it may be preferred that (a) the component for the continuous phase comprises at least one fatty substance.

  As explained above, it may be preferred that component (b) for the dispersed phase contains water.

  (a) A component for continuous phase and (e) an organic UV filter are mixed to prepare a premix, and this premix is then mixed with (c) first water-insoluble particles and (d) second water-insoluble particles. It may be preferred to prepare a mixture by mixing with (b) further components for the dispersed phase.

  Mixing can be carried out at any temperature, preferably 55 ° C. or higher, preferably 65 ° C. or higher, more preferably 75 ° C. or higher. Any of the above optional ingredients can be further mixed.

  The composition according to the invention is preferably in the form of a liquid, preferably an emulsion, more preferably a water-in-oil emulsion, even more preferably a W / O pickering emulsion.

[Cosmetics and beauty methods]
The composition according to the invention can be a cosmetic composition used in a cosmetic treatment method for keratin substances.

  Accordingly, the present invention also relates to a method for cosmetic treatment of keratin materials comprising the step of applying a composition according to the present invention to keratin materials.

  The keratin material can be the skin, lips, nails, hair, eyelashes, eyebrows and / or scalp, preferably the skin.

  The composition according to the invention can be used, for example, as a makeup product.

  The composition according to the invention can also be used as a care product and / or sun protection product, for example for the face and / or body, in a liquid to semi-liquid consistency, for example milk, somewhat rich creams, cream gels and pastes. It can also be used. These may optionally be packaged in an aerosol form and may be in the form of a mousse or spray.

  According to the invention, the composition according to the invention in the form of an evaporating fluid lotion is applied to the skin or hair in the form of fine particles using a pressure device. In accordance with the present invention, the apparatus is well known to those skilled in the art and includes a non-aerosol pump or “atomizer”, an aerosol container containing a propellant, and an aerosol pump using compressed air as the propellant. These devices are described in patents US 4 077 441 and US 4 850 517.

  Compositions packaged as aerosols generally include conventional propellants such as hydrogen fluoride treated compounds, dichlorodifluoromethane, difluoroethane, dimethyl ether, isobutane, n-butane, propane or trichlorofluoromethane, and the like. These are preferably present in an amount ranging from 15% to 50% by weight relative to the total weight of the composition.

  Since the composition according to the present invention comprises (e) at least one organic UV filter, the composition according to the present invention and the cosmetic method are suitable for skin, in particular facial skin, etc. due to the UV shielding effect provided by the organic UV filter. A cosmetic effect can be imparted to the keratin substance.

  The UV shielding effect can be the basis for the care and / or makeup of keratin materials such as skin. By forming a substantially uniform or homogeneous film on the keratin material, a uniform or uniform UV shielding effect can be obtained. Cosmetic effects may include suppression of darkening of the skin, improvement of facial skin color and uniformity, and / or treatment of skin aging.

Another subject of the invention is (c) a first water-insoluble, for preparing a dispersion, preferably in the form of an emulsion, more preferably in the form of a pickering emulsion, even more preferably in the form of a W / O pickering emulsion. Use of particles and (d) second water-insoluble particles, the dispersion comprising:
(a) continuous phase, and
(b) different from component (c), comprising at least one dispersed phase in the continuous phase,
The composition further comprises (e) at least one organic UV filter;
The composition optionally comprises at least one surfactant in an amount of 1% or less by weight relative to the total weight of the composition;
Can be used.

  The invention will be described in more detail by way of examples, which should not be construed as limiting the scope of the invention.

(Examples 1-2 and Comparative Examples 1-3)
A composition having the formulation shown in Table 1 was prepared by mixing the components shown in Table 1. The numerical values of the amounts of the components shown in Table 1 are all based on “% by mass” as active raw materials.

  The components of Phase A in Table 1 were mixed uniformly, dissolved at 75-80 ° C., and cooled to room temperature to prepare Phase A. The components of phase E in Table 1 were added to phase A at room temperature and mixed uniformly to prepare a mixture of phase A + phase E. The components of Phase B in Table 1 were mixed uniformly, dissolved at 75-80 ° C., and cooled to room temperature to prepare Phase B. The components of Table C in Table 1 were added to Phase B at room temperature and mixed uniformly to prepare a mixture of Phase B + Phase C. The components of Phase D in Table 1 were added to the mixture of Phase B + C and mixed at room temperature to prepare a mixture of Phase B + C + D. A phase + E phase was added to a mixture of B phase + C phase + D phase and mixed to prepare a pickering emulsion.

[Evaluation]
For the compositions of Examples 1-2 and Comparative Examples 1-3, the stability and feel were evaluated as follows.

1. SPF in vitro
For each of the compositions of Examples 1-2 and Comparative Examples 1-3, the sun protection factor (SPF) was calculated from BL Diffey, J. Soc. Cosmet. Chem. 40, 127-133, (1989 ) According to the “in vitro” method described in).

The SPF measurement was performed using a UV-2000 SPF analyzer manufactured by Labsphere. Each of the compositions of Examples 1-2 and Comparative Examples 1-3 was applied to a PMMA plate in an amount of 0.8 mg / cm ² and the SPF value in vitro was measured with a UV-2000 SPF analyzer.

  The results are shown in Table 1.

2. Non-sticky skin feel An expert sensory tester applied each of the compositions of Examples 1-2 and Comparative Examples 1-3 to evaluate the feel. Each sensory tester takes each composition on the finger and then applies it to the forearm at a rate of ² mg / cm ² to evaluate the sticky feel, and gives a rating from 1 (sticky feel) to 5 (sticky feel). Then, it was classified into the following three categories based on the average score.
○○: Excellent (5.0-3.5)
×: Somewhat bad (3.5-2.0)
XX: Defect (1.9-1.0)

  The results are shown in Table 1.

3. Stability Each of the compositions of Examples 1-2 and Comparative Examples 1-3 was filled into transparent glass bottles and kept for 1 month at 60 ° C. After one month, each sample was visually evaluated according to the following criteria.
◯: Excellent (appearance was the same as immediately after preparation. No separation or aggregation was observed)
○: Good (appearance was almost the same as that immediately after preparation. Little separation or aggregation was observed)
X: Average (some separation or aggregation was observed)
XX: Poor (no W / O pickering emulsion was observed)

  The results are shown in Table 1.

4. Summary Example 1 is comparable to Comparative Examples 1 and 2.

  The composition of Example 1 contained both polymethylsilsesquioxane and silylated silica and was in the form of a pickering emulsion. The composition of Example 1 was stable for 1 month at 60 ° C. The composition of Example 1 also showed good tactile sensations such as non-sticky skin feel. Furthermore, the composition of Example 1 had a high SPF value.

  The composition of Comparative Example 1 contained polymethylsilsesquioxane but did not contain silylated silica as compared to the composition of Example 1. The composition of Comparative Example 1 was in the form of a pickering emulsion. The composition of Comparative Example 1 was stable at 60 ° C. for 1 month. However, the composition of Comparative Example 1 did not show good tactile sensation such as non-sticky skin feel. Furthermore, the composition of Comparative Example 1 did not have a high SPF value.

  Comparison between Example 1 and Comparative Example 1 demonstrates that the addition of silylated silica can increase the SPF value and give a good tactile sensation such as non-sticky skin feel.

  The composition of Comparative Example 2 contained silylated silica but did not contain polymethylsilsesquioxane compared to the composition of Example 1. The composition of Comparative Example 2 was not in the form of a pickering emulsion. However, the composition of Comparative Example 2 showed good tactile sensation such as non-sticky skin feel. Furthermore, the composition of Comparative Example 2 had a high SPF value.

  Comparison of Example 1 and Comparative Example 2 demonstrates that the addition of polymethylsilsesquioxane can provide a form of pickering emulsion that is stable for one month even at a temperature of 60 ° C. .

  Example 2 is comparable to Comparative Example 3.

  The composition of Example 2 contained both polymethylsilsesquioxane and silylated silica and was in the form of a pickering emulsion. The composition of Example 2 was stable at 60 ° C. for 1 month. The composition of Example 2 also showed good tactile sensation such as non-sticky skin feel. Furthermore, the composition of Example 2 had a much higher SPF value.

  The composition of Comparative Example 3 contained polymethylsilsesquioxane, but did not contain silylated silica as compared to the composition of Example 2. The composition of Comparative Example 3 was in the form of a pickering emulsion. The composition of Comparative Example 3 was stable at 60 ° C. for 1 month. However, the composition of Comparative Example 3 did not show good tactile sensation such as non-sticky skin feel. Furthermore, the composition of Comparative Example 3 did not show a very high SPF value.

  Comparison between Example 2 and Comparative Example 3 demonstrates that the addition of silylated silica can increase the SPF value and impart a good tactile sensation such as non-sticky skin feel.

  The amount of silylated silica in the composition of Example 2 is greater than the amount in the composition of Example 1. Therefore, the composition of Example 2 has a greater improvement in SPF value and feel than the composition of Example 1.

Claims (15)

A composition in the form of a dispersion, preferably in the form of an emulsion, more preferably in the form of a pickering emulsion,
(a) continuous phase,
(b) different from component (c) and (d), (a) at least one dispersed phase in the continuous phase;
(c) at least one formula (R) SiO _{3/2 wherein} R is independently selected from a hydrocarbon-based group and a hydroxyl group by means of a trifunctional unit, provided that at least one R is a hydrocarbon At least one first water-insoluble particle comprising at least one silicone resin, and a trifunctional unit
(d) comprising at least one second water-insoluble particle comprising hydrophobic silica,
(e) further comprising at least one organic UV filter;
Optionally, at least one surfactant is included in an amount of 1% or less by weight relative to the total weight of the composition.
Composition.   The composition of claim 1, wherein (a) the continuous phase comprises at least one fatty substance and (b) the dispersed phase comprises water.   3. A composition according to claim 2, wherein the fatty substance is in liquid form at room temperature and atmospheric pressure.   4. The composition of claim 3, wherein the fatty substance is selected from polar oils. Wherein the polar oil is, C ₁₂ -C ₁₅ alcohol benzoate, diisopropyl sebacate, lauroyl sarcosine isopropyl, dicaprylyl carbonate, 2-phenylethyl benzoate, salicylate butyl octyl neopentanoate 2-octyldodecyl, dicaprylyl ether, isocetyl stearate, 5.Claim 4 selected from the group consisting of isodecyl neopentanoate, isononyl isononanoate, isopropyl myristate, isopropyl palmitate, isostearyl behenate, myristyl myristate, octyl palmitate, tridecyl trimellitate, and mixtures thereof. Composition.   The amount of the fatty substance is 30% by mass or more, preferably 40% by mass or more, more preferably 45% by mass or more with respect to the total mass of the composition, according to any one of claims 2 to 5. Composition.   7. A composition according to any one of the preceding claims, wherein the silicone resin comprises at least one polyalkylsilsesquioxane, preferably at least one polymethylsilsesquioxane.   (c) The amount of the first water-insoluble particles is 0.01 to 20% by mass, preferably 0.05 to 10% by mass, more preferably 0.1 to 5% by mass, based on the total mass of the composition. 8. The composition according to any one of 1 to 7.   The composition according to any one of claims 1 to 7, wherein the hydrophobic silica is silylated silica.   (d) The amount of the second water-insoluble particles is 0.01 to 20% by mass, preferably 0.05 to 10% by mass, more preferably 0.1 to 5% by mass, based on the total mass of the composition. The composition according to any one of 1 to 9.   The composition according to any one of claims 2 to 10, wherein the amount of water is 70% by mass or less, preferably 60% by mass or less, more preferably 50% by mass or less, based on the total mass of the composition. object.   12. The composition according to any one of claims 1 to 11, wherein the (e) organic UV filter is a lipophilic or oil-soluble organic UV filter.   (e) Organic UV filter is butylmethoxydibenzoylmethane, ethylhexyl methoxycinnamate, ethylhexyl salicylate, homosalate, butylmethoxydibenzoylmethane, octocrylene, benzophenone-3, n-hexyl 2- (4-diethylamino-2-hydroxy Benzoyl) benzoate, 4-methylbenzylidene camphor, bis (ethylhexyloxyphenyl) methoxyphenyltriazine, ethylhexyltriazone, diethylhexylbutamidotriazone, 2,4,6-tris (dineopentyl 4'-aminobenzalmalonate)- s-triazine, 2,4,6-tris (diisobutyl 4'-aminobenzalmalonate) -s-triazine, 2,4-bis (dineopentyl4'-aminobenzalmalonate) -6- (n-butyl 4'-aminobenzoate) -s-triazine, 2,4,6-tris (biphenyl-4-yl) -1,3,5- Liazine, 2,4,6-Tris (terphenyl) -1,3,5-triazine, Drometrizol trisiloxane, Polysilicone-15, 1,1-dicarboxy (2,2'-dimethylpropyl) -4 , 4-Diphenylbutadiene, 2,4-bis [4- [5- (1,1-dimethylpropyl) benzoxazol-2-yl] phenylimino] -6-[(2-ethylhexyl) imino] -1,3 12. The composition according to any one of claims 1 to 11, selected from the group consisting of 1,5-triazine, terephthalylidene dicamphor sulfonic acid, and mixtures thereof.   (e) The amount of the organic UV filter is 50% by mass or less, preferably 40% by mass or less, more preferably 30% by mass or less, based on the total mass of the composition. The composition according to item.   A method for cosmetic treatment of a keratin substance, comprising a step of applying the composition according to any one of claims 1 to 14 to a keratin substance.