JP7086529B2 - The composition in the form of a dispersion, preferably an emulsion, more preferably a pickering emulsion. - Google Patents

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.

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

However, such pickering emulsions may be impaired in stability, and therefore new designs are desired to stabilize the pickering emulsions. In addition, cosmetic applications of such pickering emulsions require a good feel when applied to keratinous substances such as skin, especially if the emulsion contains a sticky organic UV filter. .. Further, if the pickering emulsion contains an organic UV filter, it is desirable that the organic UV filter can provide an effective UV shielding effect.

WO 98/42300 FR 0 853 634 EP-A-0 955 039 US 2004-175 338 US Pat. No. 5,246,694 US 2004/0180011 US Pat. No. 7,470,725 USP 5240975 EP-669,323 US Pat. No. 2,463,264 US Pat. No. 5,237,071 US 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, Vol. 91, p. 2001 C.M. Hansen, "The three dimensional solubility parameters", J. Paint Technol, Vol. 39, p. 105 (1967) Brinker C.J. and Scherer G.W., Sol-Gel Science, New York, Academic Press, 1990 The Journal of the American Chemical Society, Vol. 60, pp. 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. Vol. 40, pp. 127-133, (1989)

An object of the present invention is a composition comprising at least one organic UV filter, preferably in the form of a dispersion, preferably in the form of an emulsion, more preferably in the form of a pickering emulsion, without any surfactant or. It is an object of the present invention to provide a composition which can be stable even when containing only a very small amount of a surfactant, can impart a good tactile sensation, and can have a high UV shielding effect.

The object of the present invention described above 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) component (c) and different from (d), (a) at least one dispersed phase in the continuous phase,
(c) At least one equation (R) SiO _3/2 [In the equation, R is independently selected from a hydrocarbon group and a hydroxyl group by a trifunctional unit, provided that at least one R is a hydrocarbon. At least one first water-insoluble particle, including at least one silicone resin, comprising the trifunctional unit of], as well as
(d) Containing at least one second water-insoluble particle containing hydrophobic silica,
(e) Further include at least one organic UV filter,
Optionally, include at least one surfactant in an amount of 1% by weight or less relative to the total mass of the composition.
It can be realized by the composition.

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

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

Fat substances can be selected from polar oils.

Polar oils are C ₁₂ to C ₁₅ alcohol benzoate, diisopropyl sebacate, lauroyl sarcosine isopropyl, dicaprylic carbonate, 2-phenylethyl benzoate, butyl octyl salicylate, 2-octyldodecyl neopentanoate, dicapryryl ether, isosetyl stearate, neopentane. It can be selected from the group consisting of isodecyl acid acid, isononyl isononanoate, isopropyl myristate, isopropyl palmitate, isostearyl behenate, myristyl myristate, octyl palmitate, tridecyl trimeritoate, 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 contain at least one polyalkylsilsesquioxane, preferably at least one polymethylsilsesquioxane.

The amount of (c) first water-insoluble particles in the composition according to the present invention is 0.01 to 20% by mass, preferably 0.05 to 10% by mass, and more preferably 0.1 to 5% by mass with respect to the total mass of the composition. Can be%.

Hydrophobic silica can be silylated silica.

The amount of (d) second water-insoluble particles in the composition according to the present invention is 0.01 to 20% by mass, preferably 0.05 to 10% by mass, and more preferably 0.1 to 5% by mass with respect to the total mass of the composition. Can be%.

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 include butylmethoxydibenzoylmethane, ethylhexyl methoxycinnamate, ethylhexyl salicylate, homosalate, butylmethoxydibenzoylmethane, octocrylene, benzophenone-3, n-hexyl 2- (4-diethylamino-2-hydroxy). Benzoyl) benzoate, 4-methylbenzylene camphor, bis (ethylhexyloxyphenyl) methoxyphenyltriazine, ethylhexyltriazone, diethylhexylbutamidotriazone, 2,4,6-tris (dineopentyl 4'-aminobenzalmaronate)- s-Triazine, 2,4,6-Tris (diisobutyl 4'-aminobenzalmaronate)-s-triazine, 2,4-bis (dineopentyl 4'-aminobenzalmaronate)-6- (n-butyl) 4'-Aminobenzoate) -s-triazine, 2,4,6-tris (biphenyl-4-yl) -1,3,5-triazine, 2,4,6-tris (terphenyl) -1,3, 5-Triazine, Drometrizoletrisiloxane, Polysilicone-15,1,1-dicarboxy (2,2'-dimethylpropyl) -4,4-diphenylbutadiene, 2,4-bis [4- [5-( 1,1-dimethylpropyl) benzoxazole-2-yl] phenylimino] -6-[(2-ethylhexyl) imino] -1,3,5-triazine, terephthalylidenedicampharsulfonic acid, and mixtures thereof You can choose from a group of

The amount of (e) the 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, based on the total mass of the composition. ..

The present invention also relates to a method of cosmeticizing a keratin substance, which comprises the step of applying the composition according to the present invention to the keratin substance.

As a result of diligent studies, we have found that the composition is in the form of a dispersion, preferably in the form of an emulsion, more preferably in the form of a pickering emulsion, wherein the composition does not contain any surfactant or is interfacial. It is possible to provide a composition which can be stable even when containing only a very small amount of the activator, can impart a good tactile sensation, and can have a high UV shielding effect. I found.

Therefore, 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) component (c) and different from (d), (a) at least one dispersed phase in the continuous phase,
(c) At least one equation (R) SiO _3/2 [In the equation, R is independently selected from a hydrocarbon group and a hydroxyl group by a trifunctional unit, provided that at least one R is a hydrocarbon. At least one first water-insoluble particle, including at least one silicone resin, comprising the trifunctional unit of], as well as
(d) Containing at least one second water-insoluble particle containing 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% by weight or less relative to the total mass of the composition.

The present invention comprises (c) a first water-insoluble particle 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. (d) It can be characterized by the use of a second water-insoluble particle.

(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 present invention may have an excellent effect even when it contains no surfactant or a very small amount of the surfactant.

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

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

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

In addition, since the composition according to the present invention contains no surfactant or only a small amount of the surfactant, any disadvantages such as irritation to the skin can be avoided or reduced.

Generally, pickering emulsions require water-insoluble particles that have been surface-treated with at least one amphipathic substance. However, the invention does not need to use such particles to form a dispersion, preferably in the form of an emulsion, more preferably in the form of a pickering emulsion.

Hereinafter, the composition according to the present invention will be described in more detail.

[Composition]
(Form of dispersion)
The composition according to the invention comprises (a) a continuous phase and (b) at least one dispersed phase. (b) The dispersed phase exists 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.

If (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, if (a) the continuous phase is the aqueous phase and (b) the dispersed phase is the oil 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, (a) the continuous phase usually comprises at least one fatty substance and (b) the dispersed phase comprises water.

The term "W / O emulsion" or "water-in-oil emulsion" refers 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, including, macroscopically homogeneous.

The composition according to the invention is more preferably in the form of a pickering emulsion. It is even more preferred that the composition according to the invention is in the form of a W / O pickering emulsion.

(Fat substance)
The term "fat substance" is an organic that is insoluble in water at room temperature (25 ° C) and atmospheric pressure (760 mmHg) (solubility less than 5% by weight, preferably less than 1% by weight, even more preferably less than 0.1% by weight). Means a compound. The fatty material can contain at least two contiguous siloxane groups or at least one hydrocarbon chain containing at least 6 carbon atoms in its structure. 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 kinds of fatty substances can be used in combination. Therefore, a single type of fatty substance or a combination of different types of fatty substances can be used. The fatty material can be selected from lipophilic or oil-soluble UV filters described below.

The fatty substance may be in the form of a liquid or a solid. Here, "liquid" and "solid" mean that the fatty substance is in the form of liquid, paste (non-solid) or solid at room temperature (25 ° C) and atmospheric pressure ⁽ 760 mmHg or 105 Pa), respectively. Means. The fatty material is preferably in the form of a liquid or paste, more preferably in the form of a liquid, at room temperature and atmospheric pressure.

Fat substances may be selected from the group consisting of animal or plant origin oils, mineral oils, synthetic glycerides, animal oils or vegetable oils and fatty acid esters other than synthetic glycerides, fatty alcohols, fatty acids, silicone oils, and aliphatic hydrocarbons. can. These fatty substances may be volatile or non-volatile. Preferably, the fatty material can be selected from aliphatic hydrocarbons, vegetable oils, fatty alcohols, animal oils or 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 (eg liquid paraffin), paraffin, petrolatum or petrolatum and naphthalene; isoeikosan, polydecene, hydrogenated polyisobutenes such as Parleam. , And decene / butene copolymers; and mixtures thereof.

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

Examples of synthetic glycerides include, for example, caprylic acid / capric acid triglycerides, such as those sold by Stealinerie Dubois, or sold by Dynamit Nobel under the names Miglyol® 810, 812 and 818. I can mention things.

Examples of silicone oils include, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane; cyclic organopolysiloxanes such as octamethylcyclotetrasiloxane, decamethyl. Cyclopentasiloxane, dodecamethylcyclohexasiloxane, etc .; and mixtures thereof can be mentioned.

Examples of vegetable oils include flaxseed oil, camellia oil, macadamia nut oil, sunflower oil, apricot oil, soybean oil, arara oil, hazelnut oil, corn oil, mink oil, olive oil, avocado oil, etc. Examples include Southernca oil, sunflower oil, saflower oil, jojoba oil, sunflower oil, almond oil, grape seed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

Examples of animal oils include squalene, perhydrosqualene and squalene.

Examples of esters of fatty acids and / or aliphatic alcohols that are advantageous to be different from the above animal or vegetable oils and synthetic glycerides are, among other things, saturated or unsaturated, linear or branched C ₁ to. Esters of C ₂₆ aliphatic monoacids or polyacids and saturated or unsaturated, linear or branched C ₁ to C ₂₆ aliphatic monovalent or polyhydric alcohols can be mentioned, and the total number of esters can be mentioned. The number of carbon atoms is 10 or more.

Among the monoesters, dihydroabiethyl behenate, octyldodecyl behenate, isocetyl behenate, cetyl lactate, C ₁₂ -C ₁₅ alkyl lactate, isostearyl lactate, lauryl lactate, linoleil lactate, oleyl lactate, octanoic acid (iso) Stearyl, Isocetyl Octanoate, Octyl Octanoate, Cetyl Octanoate, Decyl Oleate, Isocetyl Isostearate, Isocetyl Laurate, Isocetyl Stearate, Isodecyl Octanoate, Isodecyl Oleate, Isononyl Isononanoate, Isostearyl Palmitate, Acetylricinoleic Acid Methyl, myristyl stearate, octyl isononanoate, 2-ethylhexyl isononanoate, octyl palmitate, octyl pelargonate, octyl stearate, octyldodecyl lactate, oleyl lactate, ethyl palmitate and isopropyl palmitate, 2-ethylhexyl palmitate , 2-octyldecyl palmitate, alkyl myristate, such as isopropyl myristate, butyl myristate, cetyl myristate, 2-octyldodecyl myristate, myristyl myristate or stearyl myristate, hexyl stearate, butyl stearate, stear Examples thereof include isobutyl acid acid, dioctyl malate, hexyl laurate, and 2-hexyldecyl laurate.

Furthermore, in relation to 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 and di- of C ₂ to C ₂₆ . , Tri-, tetra- or esters with pentahydroxy alcohols can also be used.

In particular: diethyl sevacinate, diisopropyl sevacinate, diisopropyl adipate, di-n-propyl adipate, dioctyl adipate, diisostearyl adipate, dioctyl maleate, glyceryl undecylate, octyl stearoyl stearate: Dodecyl, pentaerythrityl monolysinolate, pentaerythrityl tetraisononanoate, pentaerythrityl tetraperargonate, pentaerythrityl tetraisostearate, pentaerythrityl tetraoctanoate, propylene glycol dicaprylate, propylene glycol dicaprate, tridecyl erucate , Triisopropyl citrate, triisostearyl citrate, glyceryl trilactic acid, glyceryl trioctanoate, trioctyldodecyl citrate, trioleyl citrate, propylene glycol dioctanoate, neopentyl glycol diheptate, diethylene glycol diisononanoate, and polyethylene distearate. Glycol.

Among the above esters, ethyl palmitate, isopropyl palmitate, myristyl palmitate, cetyl palmitate or stearyl palmitate, 2-ethylhexyl palmitate, 2-octyldecyl palmitate, alkyl myristate, eg, 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 May be preferable to use.

The composition according to the present invention can also contain, as fatty acid esters, sugar esters and diesters of C ₆ to C ₃₀ , preferably C ₁₂ to C ₂₂ fatty acids. The term "sugar" refers to an oxygen-bearing hydrocarbon compound that contains several alcohol functional groups, contains or does not contain aldehyde or ketone functional groups, and contains at least 4 carbon atoms. Recall what it means. These sugars may be monosaccharides, oligosaccharides or polysaccharides.

Examples of suitable sugars that can be mentioned include sucrose (or saccharose), 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 other things, esters or esters of the aforementioned sugars with linear or branched, saturated or unsaturated C ₆ to C ₃₀ , preferably C ₁₂ to C ₂₂ fatty acids. You can choose from a group. If the fatty acid is unsaturated, these compounds can contain 1-3 conjugated or unconjugated carbon-carbon double bonds.

Esters in this modified form 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, for example, in particular, oleo-palmitic acid mixed esters, oleo-stearic acid mixed esters and palmito-stearic acid mixed esters.

Use monoesters and diesters, especially sucrose, glucose or methylglucos, mono-or dioleic acid esters, stearic acid esters, behenic acid esters, oleopalmitic acid esters, linoleic acid esters, linolenic acid esters and oleostearic acid esters. May be more preferred.

An example that can be mentioned is the product sold by Amerchol under the name Glucate® DO, 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 Crodasta F160, F140, F110, F90, F70 and SL40, from 73% monoesters and 27% diesters and triesters to 61% monoesters and diesters, respectively. , From 39% Triesters and Tetraesters, 52% Monoesters and 48% Diesters, Triesters and Tetraesters, 45% Monoesters and 55% Diesters, Triesters and Tetraesters, 39% Monoesters and Diesters, Triesters. Representing each palmitostearate sucrose, as well as monolauric acid sucrose, formed from 61% esters and tetraesters,
--Products sold under the name Ryoto Sugar Ester, for example, the equivalent of sucrose behenate formed from 20% monoester and 80% di-, tri-, polyester, reference number B370.
--Mono-dipalmit-sucrose stearate sold by Goldschmidt under the name Tegosoft® PSE.

The fatty substance can be at least one fatty acid, and two or more fatty acids can be used. The fatty acid should be in acidic form (ie, not in salt form to avoid becoming soap) and may be saturated or unsaturated, with 6-30 carbon atoms, especially 9-30 carbons. It may contain atoms and is optionally substituted with one or more hydroxyl groups (particularly 1 to 4). If the fatty acid is unsaturated, these compounds can contain 1-3 conjugated or unconjugated 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 "aliphatic alcohol" as used herein means any saturated or unsaturated, linear or branched, C ₈ to C ₃₀ aliphatic alcohol, which is particularly one or more. It is optionally substituted with multiple hydroxyl groups (especially 1 to 4). If the fatty alcohol is unsaturated, these compounds can contain 1-3 conjugated or unconjugated carbon-carbon double bonds.

Among the C ₈ to C ₃₀ aliphatic alcohols, for example, C ₁₂ to C ₂₂ aliphatic alcohols can be used. Among these, lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, behenyl alcohol, linoleil alcohol, undecylenyl alcohol, palmitrail alcohol, linolenyl alcohol, myristyl alcohol, arachidonyl alcohol and elcil. Alcohols, as well as mixtures thereof, can be mentioned. 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. As used herein, the term "wax" means that the fatty substance is in a substantially solid form at room temperature (25 ° C.) and at atmospheric pressure (760 mmHg) and generally has a melting point of 35 ° C. or higher. As the waxy fatty substance, waxes generally used in cosmetics can be used alone or in combination.

For example, the wax is carnauba wax, microcrystallin wax, ozokelite, hydrogenated jojoba oil, polyethylene wax, for example, wax sold under the name of "Performalene 400 Polyethylene" by New Phase Technologies, silicone wax, for example by Goldschmidt. Polyethylene (C ₂₄ -C ₂₈ ) alkylmethyldimethylsiloxane, palm fat, products sold under the name "Abil Wax 9810", C stearate sold under the name "Kester Wax K82H" by Koster Keunen You can choose from ₂₀ -C ₄₀ alkyl, stearyl benzoate, cellac wax, and mixtures 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 zokerite, as well as mixtures thereof.

The fatty substance is preferably selected from polar oils.

The term "polar oil" is any lipophilicity at 25 ° C with a solubility parameter δ _d characteristic of dispersion interactions greater than 16 and a solubility parameter δ _p characteristic of polar interactions greater than exactly 0. Means a compound. 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.

Definitions and calculations of solubility parameters in the Hansen three-dimensional solubility space are described in the paper C.M. Hansen, "The three dimensional solubility parameters", J. Paint Technol, Vol. 39, p. 105 (1967).

According to this Hansen space
—— δ _d characterizes the London dispersion force resulting from the formation of dipoles induced during molecular influences.
―― δ _p characterizes the Debye interaction force between permanent dipoles and the Kasom interaction force between induced dipoles and permanent dipoles.
—— δ _h characterizes a particular interaction force (eg hydrogen bond, acid / base, donor / acceptor, etc.) and
--δ _a is calculated by the equation: 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 substantially formed or even composed of carbon and hydrogen atoms, and optionally oxygen and nitrogen atoms, but silicon atoms are also fluorine atoms. Means oil that does not contain any. The polar hydrocarbon-based oil may contain an alcohol group, an ester group, an ether group, a carboxylic acid group, an amine group, and / or an amide group.

Priority, the polar oils according to the invention have a surface tension of greater than 10 mN / m at 25 ° C. and atmospheric pressure.

Surface activity is measured by a static tension measurement method using the Dunuiling 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 completely immersed in the pre-evaluation liquid and then pulled out very slowly until the force is maximized. From this maximum force F _max , formula the surface tension:
σ = F _max / 4πR f _corr (r, R, ρ)
(In the equation, f _corr is the correction factor of the ring that depends on the geometry and density ρ of the ring).

The 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, non-volatile polar oils can be selected from the following list of oils, and mixtures thereof:
--Triglycerides consisting of hydrocarbon-based polar oils such as phytosteryl esters such as phytosteryl oleate, phytosteryl isostearate and phytosteryl lauroyl glutamate / octyldodecyl (Ajinomoto Co., Ltd., Eldew PS203), glycerol fatty acid esters, especially C ₄ -C. ₃₆ , especially triglycerides of fatty acids that can have chain lengths ranging from 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, sunflower oil, shea butter oil, avocado oil, olive oil, soybean oil, sweet almond Oil, palm oil, abrana seed oil, cottonseed oil, hazelnut oil, macadamia oil, jojoba oil, alfalfa oil, poppy oil, pumpkin oil, pepo pumpkin oil, black sardine oil, evening primrose oil, millet oil, corn oil, quinoa oil, limewood oil, Saflower oil, Kukui oil, Tokeisou oil or Muskrose oil; Shea butter; or instead caprilic acid / capric acid triglyceride, such as those sold by Stealinerie Dubois or Miglyol 810®, 812 by Dynamit Nobel. Can be sold under the names (Registered Trademark) and 818 (Registered Trademark),
--Synthetic ethers containing 10-40 carbon atoms, such as dicaprylyl ethers,
--The hydrocarbon system of the formula RCOOR'(in the formula, 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 octanate, 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, heptanic acid ester, especially isostearyl heptanate, octanoic acid, decanoic acid or lysinoic acid alcohol or polyhydric alcohol, such as propylene glycol dioctanoate, cetyl octanoate, tridecyl octanoate, 4-diheptanoic acid and 2-palmitic acid. Ethylhexyl, alkyl benzoate, polyethylene glycol diheptate, propylene glycol 2-diethylhexanoate, and mixtures thereof, C ₁₂ -C ₁₅ alcohol benzoate, hexyl laurate, neopentanoic acid esters such as isodecyl neopentate, isotridecyl neopentanoate, Isostearyl neopentanoate and 2-octyldodecyl neopentanoate, isononanoic acid esters such as isononyl isononanoate, isotolideyl isotoridenate and octyl isononanoate, oleyl erucate, diisopropyl lauroyl sarcosine, diisopropyl sebacate, isosetyl stearate, isodecyl neopentanoate, Isostearyl behenate, as well as myristyl myristine,
--Polyesters obtained by condensing unsaturated fatty acid dimers and / or trimmers with diols, such as those described in patent application FR 0 853 634, in particular, obtained by condensing, for example, dilinolic acid with 1,4-butanediol. Polyester to be. In this regard, in particular the polymers sold by Biosynthis under the name Viscoplast 14436H [INCI name: (dilinolic acid / butanediol) copolymer], or copolymers of polyols with dimerated diacids and their esters, such as Hailuscent ISDA. Can be mentioned,
—— Polyol esters and pentaerythritol esters such as tetra (hydroxystearic acid / isostearic acid) dipentaerythritol,
—— Aliphatic alcohols containing 12 to 26 carbon atoms, such as octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol and oleyl alcohol,
--C ₁₂ to C ₂₂ higher fatty acids such as oleic acid, linoleic acid and linolenic acid, and mixtures thereof,
--Choice-based, partially hydrocarbon-based and / or silicone-based fluorinated oil,
—— A fatty acid containing 12 to 26 carbon atoms, such as oleic acid,
—— Dialkyl carbonates in which the two alkyl chains are optionally the same or different, such as dicaprylyl carbonate, sold by Cognis under the name Cetiol CC®, as well.
—— Non-volatile oils with high molecular weight, eg between 400 and 10,000 g / mol, especially between 650 and 10,000 g / mol, eg:
i) Vinylpyrrolidone copolymer, eg vinylpyrrolidone / 1-hexadecene copolymer, Antaron V-216 (MW = 7300g / mol), sold or manufactured by ASP Japan, Inc.,
ii) Esters, for example:
a) Linear fatty acid esters with a total carbon number range of 35-70, such as pentaerythrityl tetrapelargonate (MW = 697.05 g / mol),
b) Hydroxylated esters such as polyglycerol triisostearate-2 (MW = 965.58 g / mol),
c) Aromatic esters such as tridecyl trimeritate (MW = 757.19 g / mol), C ₁₂ -C ₁₅ alcohol benzoate, 2-phenylethyl benzoate and butyl octyl salicylate,
d) C ₂₄ -C ₂₈ branched fatty acid or aliphatic alcohol esters, such as those described in patent application EP-A-0 955 039, in particular triisoaraxyl citrate (MW = 1033.76 g / mol). ), Pentaerythrityl tetraisononanoate (MW = 697.05g / mol), Glyceryl triisostearate (MW = 891.51g / mol), Tris (2-decyl) Glyceryl tetradecanoate (MW = 1143.98g / mol), Tetraisosteare Pentaerythrityl acid (MW = 1202.02g / mol), polyglyceryl-2 tetraisostearate (MW = 1232.04g / mol) or tetrakis (2-decyl) pentaerythrityl tetradecanoate (MW = 1538.66g / mol),
e) Esters and polyesters of dimerdiol and monocarboxylic acid or dicarboxylic acid, for example, esters of dimerdiol and fatty acid and esters of dimerdiol and dimergingcarboxylic acid, for example, sold by Nippon Seika Co., Ltd. Lusplan DD-DA5® and Lusplan DD-DA7®, described in patent application US 2004-175 338 (the contents of which are incorporated herein by reference),
and
--A mixture of these.

Polar oils are C ₁₂ to C ₁₅ alcohol benzoate, diisopropyl sebacate, lauroyl sarcosine isopropyl, dicaprylic carbonate, 2-phenylethyl benzoate, butyl octyl salicylate, 2-octyldodecyl neopentanoate, dicapryryl ether, isosetyl stearate, neopentane. It is more preferred to be selected from the group consisting of isodecyl acid acid, isononyl isononanoate, isopropyl myristate, isopropyl palmitate, isostearyl behenate, myristyl myristate, octyl palmitate, tridecyl trimeritoate, 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 preferable that the amount of the fatty substance in the composition according to the present invention is 55% by mass or less with respect to the total mass 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 preferable that the amount of the fatty substance in the composition according to the present invention is 48% by mass or more with respect to the total mass of the composition.

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

(First water-insoluble particle)
As described above, the composition according to the present invention contains (c) at least one first water-insoluble particle different from the component (b). For the purposes of the present invention, the term "water-insoluble particles" has a water solubility at 25 ° C. of less than 1% by weight, preferably less than 0.1% by weight, more preferably less than 0.01% by weight, based on the total mass of the particles. Particles, most preferably insoluble particles.

According to the present invention, two or more kinds of first water-insoluble particles can be used in combination. Therefore, 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 solid form. More preferably, (c) the first water-insoluble particles can be powdered.

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

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

(c) It may be preferable that the average particle size (average of the maximum dimensions) of the first water-insoluble particles is 500 nm or more. (c) The average particle size 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 further. More preferably, it can be 10 μm or less. The average particle size can be measured by dynamic light scattering, for example with the Nicomp Z380.

(c) The first water-insoluble particle is at least one formula (R) SiO _3/2 [in the formula, R is independently selected from a hydrocarbon group and a hydroxyl group by a trifunctional unit, provided that , At least one R is a hydrocarbon-based group] contains at least one silicone resin.

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

As used herein, the term "resin" means a crosslinked or non-crosslinked three-dimensional structure. Examples of polysiloxane T resins that can be mentioned include silsesquioxane and siloxysilicates.

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

The letter M represents, for example, a monofunctional unit of formula (CH ₃ ) _{3SiO 1/2} , and this silicon atom is attached to only one oxygen atom in the polymer containing this unit.

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

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

The silicone resin preferably contains at least one polyalkylsilsesquioxane, more preferably at least one polymethylsilsesquioxane. The silicone resin is more preferably composed of at least one polyalkylsilsesquioxane, and even more preferably at least one polymethylsilsesquioxane.

Within each of the M, D and T units given above as an example, at least one of the methyl groups may be substituted. In some embodiments, at least one silicone resin containing at least one trifunctional unit of formula (R) SiO _3/2 is such that the formula: ((R') SiO _3/2 ) _x [in the formula, x ranges from 100 to 500 and R'is independently selected from hydrocarbon or hydroxyl groups 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 group containing 1-10 carbon atoms is a methyl group. In some embodiments, the at least one silicone resin containing at least one trifunctional unit of formula (R) SiO _3/2 is such that the formula: ((R') SiO _3/2 ) _x [in the formula, x ranges from 100 to 500, and R'is independently selected from CH ₃ , a hydrocarbon group containing 2 to 10 carbon atoms, or a hydroxyl group, but at least one. R'is selected from the hydrocarbon-based groups] silsesquioxane.

Finally, the letter Q means the tetrafunctional unit SiO _4/2 , in which the silicon atom is attached to the four oxygen atoms, which themselves are attached 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, It also changes according to the size of the side chain.

Silicone resin contains at least one T unit. Therefore, it can be, for example, a T resin, an MT resin, an MTQ resin, or an MDTQ resin.

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

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

As already described in the definition of the T unit, the silicone resin has the following formula: ((CH ₃ ) SiO _3/2 ) _x [In the formula, x can be up to several thousand, and CH ₃ groups are R groups. It may be substituted] and can be selected from silsesquioxane represented by. The number x of T units of 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 at it in detail, not all silsesquioxane form a film, for example, highly polymerized polymethylsilsesquioxane, for example, Tospearl manufactured by Momentive Performance Materials Japan GK. Trademark) 145A (average particle size 4.5 μm) and Tospearl ™ 2000B (average particle size 6 μm) or KMP590 manufactured by Shin-Etsu Chemical Industry Co., Ltd. are insoluble and do not form a film. The molecular weights of these polymethylsilsesquioxane are difficult to measure, but generally have more than 1000 T units.

Examples of silicone resins containing at least one of these T units include: Polysil of formula ((R) SiO _3/2 ) _x (T unit) [where x exceeds 100 and the R group can independently be methyl or other substituents defined above]. Sesquioxane; polymethylsyl sesquioxane in which R is a methyl group, polymethylsyl sesquioxane, such polymethylsyl sesquioxane are described, for example, in US Pat. No. 5,246,694; R is phenyl. The base polyphenylsilsesquioxane, this compound and its synthesis are described, for example, in patent application US 2004/0180011.

Examples of commercially available polymethylsilsesquioxane resins that can be mentioned include:
Sold by Wacker under the reference name Resin MK, for example, Belsil PMS MK, a polymer containing CH _{3SiO 3/2 repeating} units (T units), up to 1% by weight (CH ₃ ). A polymer that can also contain _{2SiO 2/2 units} (D units) and has an average molecular weight of approximately 10,000 g / mol. Polymers are considered to be of the "cage" type and "ladder" type 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 an ethoxy group at the end. This ethoxy group makes up 4.5% by weight of the polymer. Since this terminal group can react with water, small amounts of various amounts of SiOH groups may also be present.

Sold by Shin-Etsu Chemical Co., Ltd. under the reference name of KR-220L [consisting of T units of formula CH _{3SiO 3/2 and} having a Si-OH (silanol) terminal group], KR-242A Those sold under the reference name [containing 98% T unit and 2% dimethyl D unit and having Si-OH end groups], or those sold under the reference name of KR-251 [T unit 88% and Contains 12% dimethyl D unit and has Si-OH end groups].

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

Examples of commercially available polyphenylsilsesquioxane resins that can be mentioned include:
Sold by Dow Corning under the reference name Dow Corning 217 Flake Resin [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. At least one silicone resin containing at least one T unit can be present in the composition in concentrations 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 containing 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 (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 preferable that the amount of (c) first water-insoluble particles in the composition according to the present invention is 3% by mass or less with respect to the total mass of the composition.

The amount of (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, based on the total mass of the composition. be able to. It may be even more preferable that the amount of (c) first water-insoluble particles in the composition according to the present invention is 0.2% by mass or more with respect to the total mass of the composition.

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

(Second water-insoluble particle)
As described above, the composition according to the present invention contains (d) at least one second water-insoluble particle which is different from the components (b) and (c). For the purposes of the present invention, the term "water-insoluble particles" has a water solubility at 25 ° C. of less than 1% by weight, preferably less than 0.1% by weight, more preferably less than 0.01% by weight, based on the total mass of the particles. Particles, most preferably insoluble particles.

According to the present invention, two or more kinds of second water-insoluble particles can be used in combination. Therefore, 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 solid form. More preferably, (d) the second water-insoluble particles can be powdered.

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

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

(d) It may be preferable that the average particle size (average of the maximum dimensions) of the second water-insoluble particles is 500 nm or more. (d) The average particle size of the second 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 further. More preferably, it can be 10 μm or less. The average particle size can be measured by dynamic light scattering, for example with the Nicomp Z380.

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

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

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

Amorphous hydrophobic silica of fume origin is obtained from hydrophilic silica. Hydrophilic silica is obtained by pyrolyzing silicon tetrachloride (SiCl ₄ ) in the presence of hydrogen and oxygen in a continuous flame at 1000 ° C. They are then made hydrophobic by treatment with halogenated silanes, alkoxysilanes or silazanes. Hydrophobic silica differs from the starting hydrophilic silica in that it has a low density of silanol groups and less water vapor adsorption.

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 of 3 to 50 nm. More specifically, these are the hydrophobic silicas listed in the following table and mixtures thereof.

According to this embodiment, the hydrophobic silica used in the compositions of the present invention is also completely or partially coated with silica particles, particularly completely or partially hydrophobic silica. It can also consist of the inorganic particles that have been formed, such as pigments and metal oxides that are coated with hydrophobic silica. These particles can also have optical properties in the product and on the skin, for example, they may have a matte effect or a slight whitening effect.

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

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

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

Silica airgels are generally synthesized in a liquid medium by the sol-gel method and then usually dried by extraction of a supercritical fluid (most commonly used is supercritical CO ₂ ). This type of drying makes it possible to avoid shrinkage of pores and materials. 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.

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

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

The specific surface area per unit of mass can be determined by the nitrogen absorption method known as the BET (Brunauer-Emmett-Teller) method, which is the Journal of the American Chemical Society, Vol. 60, p. 309, 1938. Listed in February, it complies with 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 commercially available particle size analyzer, the MasterSizer 2000 from Malvern. The data is processed based on the 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.

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

It is advantageous that the airgel silica particles used in the present invention have a packing density (ρ) in the range of 0.04 g / cm ³ to 0.10 g / cm ³ , preferably 0.05 g / cm ³ to 0.08 g / cm ³ . could be.

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

According to one embodiment, the hydrophobic silica airgel particles used in the present invention have a specific surface area SV of 5 to 60 m ² / cm ³ , preferably 10 to 50 m ² / cm ³ , even better. It ranges from 15 to 40 m ² / cm ³ .

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

Preferably, the hydrophobic silica airgel particles according to the present invention have an oil absorption capacity measured at a wet point in the range of 5 to 18 ml / g, preferably 6 to 15 ml / g, and more preferably 8 to 12 ml / g. be.

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

It is measured according to the "wet point" method or the method described in Standard NFT 30-022 to determine the oil uptake of the powder. It corresponds to the amount of oil adsorbed on and / or absorbed by the powder on the available surface of the powder, as measured by the wet point below.

Place an amount of powder w = 2 g on a glass plate, then add oil (isonononyl isononanoate) droplets. Add 4-5 drops of oil to the powder, then mix using a spatula and continue adding the oil until an aggregate of oil and powder is formed. From the time of formation, the oil is added at a rate of 1 drop at a time, followed by grinding the mixture with a spatula. Stop adding oil when a firm and smooth paste is obtained. The paste must be able to be spread on a glass plate without cracking or forming lumps. The volume Vs (represented in ml) of the oil used is then recorded.

The amount of oil taken up corresponds to the ratio Vs / w.

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

The term "hydrophobic silica" refers to silylating agents such as silane halides such as alkylchlorosilanes, siloxanes, especially dimethylsiloxanes, so that the OH group is functionalized with a silyl group Si-Rn, such as a trimethylsilyl group. , For example hexamethyldisiloxane, or any silica that has been treated with silazane, is understood to mean any silica.

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

Aerogel particles of hydrophobic silica (trimethylsiloxyylated silica) whose surface is modified with a trimethylsilyl group will be particularly used.

As the hydrophobic silica airgel that can be used in the present invention, for example, the airgel sold by Dow Corning under the name of VM-2260 (INCI name: silylated silica) can be mentioned, and the particles thereof are average. It has a diameter of approximately 1000 microns and a specific surface area per mass unit in the range of 600-800 m ² / g.

Also mentioned are the airgels sold by Cabot under the references Aerogel TLD 201, Aerogel OGD 201 and Aerogel TLD 203.

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

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

The amount of (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, based on the total mass of the composition. be able to. It may be even more preferable that the amount of (d) second water-insoluble particles in the composition according to the present invention is 0.2% by mass or more with respect to the total mass of the composition.

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

(water)
The composition according to the present invention may contain 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 to 50% by mass, preferably 5 to 45% by mass, and more preferably 10 to 40% by mass with respect to the total mass 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) The organic UV filter can be present in (a) continuous phase of the composition according to the invention.

The amount of (e) the 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, based on the total mass of the composition. ..

The amount of (e) the 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, based on the total mass of the composition. ..

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

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

The term "lipophilic or oil-soluble organic UV filter" as used herein can shield UV irradiation and be completely dissolved in the oil phase in molecular form, 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 filters used in the present invention can be active in the UV-A and / or UV-B regions. 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 types of lipophilic or oil-soluble organic UV filters can be used in the compositions according to the invention. Preferably, the lipophilic or oil-soluble organic UV filter is an anthranil 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; a benzotriazole compound. Benzalmalonate compounds; benzimidazole compounds; imidazoline compounds; bis-benzoazolyl compounds; p-aminobenzoic acid (PABA) compounds; methylenebis (hydroxyphenylbenzotriazole) compounds; benzoxazole compounds; shielding polymers and shielding silicones; α- It can be selected from the group consisting of dimers derived from alkylstyrene; 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 listed below by their INCI name and mixtures thereof.

--Anthranil compound: Menthyl anthranilate marketed by Haarmann and Reimer under the trade name "Neo Heliopan MA".

--Dibenzoylmethane compounds: Butylmethoxydibenzoylmethane; and isopropyldibenzoylmethane, in particular, marketed by Hoffmann-La Roche under the trade name "Parsol 1789".

--Cinnamic acid compounds: In particular, ethylhexyl methoxycinnamate marketed under the trade name "Parsol MCX" by BASF; isopropyl methoxycinnamate; isopropoxymethoxycinnamate; "Neo Heliopan E" by Haarmann and Reimer. Isoamyl methoxycinnamate commercially available under the trade name of "1000"; Shinoxate (2-ethoxyethyl-4-methoxycinnamate); DEA methoxycinnamate; Methyl diisopropyl cinnamic acid; and Dimethoxycinnamic acid ethylhexanoate Glyceryl.

--Salicylic acid compound: Homo salate (homomentyl salicylate) marketed by Rona / EM Industries under the trade name "Eusolex HMS"; ethylhexyl salicylate marketed by Haarmann and Reimer under the trade name "Neo Heliopan OS"; salicylic acid Glycol; Butyl octyl salicylate; Phenyl salicylate; Dipropylene glycol salicylate marketed under the trade name "Dipsal" by Scher; TEA salicylate marketed under the trade name "Neo Heliopan TS" by Haarmann and Reimer.

--Camphor compounds, in particular benzylidene camphor derivatives: 3-benzylidene camphor manufactured by Chimex under the trade name "Mexoryl SD"; 4-methylbenzidene camphor marketed by Merck under the trade name "Eusolex 6300". Benzylidene camphor sulfonic acid manufactured by Chimex under the trade name "Mexoryl SL"; camphor benzalconium metosulfate manufactured by Chimex under the trade name "Mexoryl SO"; and " Polyacrylamide methylbenzylidene camphor manufactured under the trade name of "Mexoryl SW".

--Benzophenone compound: Benzophenone-1 (2,4-dihydroxybenzophenone) marketed by BASF under the trade name "Uvinul 400"; Benzophenone-2 (2,4-dihydroxybenzophenone) marketed by BASF under the trade name "Uvinul D50" Tetrahydroxybenzophenone); benzophenone-3 (2-hydroxy-4-methoxybenzophenone) marketed by BASF under the trade name "Uvinul M40" or oxybenzophenone; marketed by BASF under the trade name "Uvinul MS40" Benzophenone-4 (Hydroxymethoxybenzophenone sulfonic acid); Benzophenone-5 (Sodium hydroxymethoxybenzophenone sulfonate); Benzophenone-6 (dihydroxydimethoxybenzophenone) marketed by Norquay under the trade name "Helisorb 11"; American Cyanamid Benzophenone-8 marketed under the trade name "Spectra-Sorb UV-24" by BASF; Benzophenone-9 (disodium dihydroxydimethoxybenzophenone disulfonate) marketed 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-diphenylacrylate compounds: Octocrylene marketed in particular by BASF under the trade name "Uvinul N539"; and in particular octocrylene marketed by BASF under the trade name "Uvinul N35".

--Triazine Compound: Diethylhexylbutamidotriazone marketed by Sigma 3V under the trade name "Uvasorb HEB"; 2,4,6-tris (dineopentyl 4'-aminobenzalmaronate)-s-triazine, Bis-ethylhexyloxyphenol methoxyphenyl triazine marketed by CIBA GEIGY under the trade name << TINOSORB S >>, and ethylhexyltriazine marketed by BASF under the trade name << UVINUL T150 >>.

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

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

—— Benzimidazole compounds, especially phenylbenzimidazole derivatives.

--Imidazolines compound: Ethylhexyldimethoxybenzylidenedioxoimidazoline propionate.

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

--Para-aminobenzoic acid compound: PABA (p-aminobenzoic acid), ethyl PABA, ethyldihydroxypropyl PABA, pentyldimethyl PABA, especially marketed by AISP Japan Co., Ltd. under the trade name "Escalol 507". Dimethyl PABA Ethylhexyl, glyceryl PABA, and PEG-25 PABA marketed by BASF under the trade name "Uvinul P25".

--Methylenebis- (hydroxyphenylbenzotriazole) compounds, such as 2,2'-methylenebis [6- (2H-benzotriazole-2), marketed in solid form under the trade name "Mixxim BB / 200" by Fairmount Chemical. -Il) -4-methyl-phenol], marketed under the trade name "Tinosorb M" by BASF or under the trade name "Mixxim BB / 100" by Fairmount Chemical, in the form of micronized aqueous dispersions. 2,2'-Methylenebis [6- (2H-benzotriazole-2-yl) -4- (1,1,3,3-tetramethylbutyl) phenol], and US Pat. Nos. 5,237,071, 5,166,355, Derivatives described in GB-2,303,549, DE-197,26,184 and EP-893,119, as well as
Drometrizole trisiloxane, as shown below, marketed by Rhodia Chimie under the trade name "Silatrizole" or by L'Oreal under the trade name "Mexoryl XL".

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

--Shielding Polymers and Shielding Silicones: Silicones as described in WO 93/04665.

--Dimers derived from α-alkylstyrene: Dimers 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-hexyl2- (4-diethylamino-2-hydroxybenzoyl) benzoate, 1, 1'-(1,4-piperazindiyl) bis [1- [2- [4- (diethylamino) -2-hydroxybenzoyl] phenyl] -methanone, 4-methylbenzylene camphor, ethylhexyltriazone, bis-ethylhexyloxyphenol Methylphenyltriazine, diethylhexylbutamidotriazone, 2,4,6-tris (dineopentyl 4'-aminobenzalmaronate)-s-triazine, 2,4,6-tris (diisobutyl 4'-aminobenzalmaloate) Nate) -s-triazine, 2,4-bis- (n-butyl 4'-aminobenzalmaronate) -6-[(3- {1,3,3,3-tetramethyl-1-[(trimethylsilyl) Oxy] disiroxanyl} propyl) amino] -s-triazine, 2,4,6-tris- (di-phenyl) -triazine, 2,4,6-tris-(tel-phenyl) -triazine, methylenebis-benzotriazoli Lutetramethylbutylphenol, Drometrizoletrisiloxane, Polysilicone-15, Dineopentyl 4'-methoxybenzalmalonate, 1,1-dicarboxy (2,2'-dimethylpropyl) -4,4-diphenylbutadiene, 2 , 4-Bis [5-1 (dimethylpropyl) benzoxazole-2-yl- (4-phenyl) imino] -6- (2-ethylhexyl) imino-1,3,5-triazine, camphorbenzalconium methylolu It is preferably selected from the group consisting of Fate and mixtures thereof.

The amount of the lipophilic or oil-soluble organic UV filter in the composition according to the present invention is 1 to 50% by mass, preferably 5 to 40% by mass, and more preferably 10 to 30% by mass with respect to the total mass of the composition. Can be%.

(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.

The term "hydrophilic or water-soluble organic UV filter" as used herein can shield UV irradiation and be completely soluble in the aqueous phase in molecular form, or in colloidal form in the aqueous phase (eg,). 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 regions.

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 types 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.

Hydrophilic or water-soluble organic UV filters include, but are not limited to:
Tereftalylidene dikanfer sulfonic 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, more specifically the compound phenyldibenzoimidazole tetra sold by Haarmann and Reimer under the trade name "Neo Heliopan AP". Disodium sulfonate and its salts,
p-Aminobenzoic acid (PABA) derivatives such as PABA, glyceryl PABA and PEG-25 PABA, and salts thereof, such as those sold by BASF under the name "Uvinul P25",
Phenylbenzimidazole sulfonic acid and its salts, such as those sold under the trade name "Eusolex 232" by Merck, in particular,
Ferulic acid and its salts,
Salicylic acid and its salts,
Ocyl 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 metosulfate and its salts, such as those manufactured by Chimex under the name "Mexoryl SO",
Benzophenone-4 and its salts, such as those sold by BASF under the trade name "Uvinul MS40",
Benzophenone-5 and its salts,
Benzophenone-9 and its salts,
(+)-10-Camphorsulfonic acid and its salts,
Includes 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid and its salts, as well as phenyldibenzoimidazole tetrasulfonic acid disodium and its salts.

Hydrophilic or water-soluble organic UV filters include terephthalylidene dicamer sulfonic acid and its salts, phenylbenzoimidazole sulfonic acid and its salts, (+) -10-camfer sulfonic acid and its salts, 2-hydroxy-4-. It can be selected from the group consisting of methoxybenzophenone-5-sulfonic acid and its salt, phenyldibenzoimidazole disodium tetrasulfonic acid and its salt, and mixtures thereof.

The amount of the hydrophilic or water-soluble organic UV filter in the composition according to the present invention is 0.1 to 15% by mass, preferably 0.5 to 10% by mass, and more preferably 1 to 5% by mass with respect to the total mass of the composition. Can be%.

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

In the composition according to the present invention, at least one surfactant is optionally added in an amount of 1% by mass or less, preferably 0.1% by mass or less, more preferably 0.01% by mass or less, based on the total mass of the composition. However, 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 in an amount of 1 mass relative to the total mass of the composition. It means that it is contained only in an amount of% or less, preferably 0.1% by mass or less, and more preferably 0.01% by mass or less.

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

(Optional ingredient)
The compositions according to the invention can also contain other effective amounts of agents previously known elsewhere in whitening or coloring compositions, eg (c) first water-insoluble particles. And (d) fillers and pigments other than the second water-insoluble particles, pH adjusters such as acids and bases, metal ion blocking agents such as EDTA and ethidronic acid, inorganic UV shielding agents, silicones other than those mentioned above, such as There are silicone oils, preservatives, vitamins or provitamins such as pantenols, opalescents, fragrances, plant extracts, cationic polymers and the like.

The composition according to the present invention may contain 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. Therefore, the organic solvent is preferably miscible with water. As organic solvents, for example, C ₁ to C ₄ alkanols such as ethanol and isopropanol; polyols and polyol ethers such as glycerol, 2-butoxyethanol, propylene glycol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether and monomethyl ether; Aromatic alcohols such as benzyl alcohol and phenoxyethanol; similar products; and mixtures thereof can be mentioned.

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

The pH of the composition according to the invention can generally be, for example, 4-12. The pH can be in the range of 5-11, preferably 6-10, and may be adjusted to the desired value using a pH regulator 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 leometer, preferably conical flat 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 1s ^-1 .

[Preparation]
The composition according to the present invention can be prepared by mixing the above-mentioned essential components and optional components as in the conventional case.

For example, the composition according to the present 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 1% by weight or less relative to the total mass of the composition).
Can be prepared by a method including a step of mixing.

It is possible to further mix any of the optional components other than the surfactant.

As described above, (a) the components for the continuous phase may preferably contain at least one fatty substance.

As described above, (b) the component for the dispersed phase may preferably contain water.

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

The mixing can be carried out at any temperature, preferably 55 ° C. or higher, preferably 65 ° C. or higher, and more preferably 75 ° C. or higher. It is possible to further mix any of the above optional components.

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.

[Makeup applications and beauty methods]
The composition according to the present invention can be a cosmetic composition used in a cosmetic treatment method for a keratin substance.

Therefore, the present invention also relates to a cosmetic method for a keratin substance, which comprises the step of applying the composition according to the present invention to the keratin substance.

The keratinous substance can be skin, lips, nails, hair, eyelashes, eyebrows and / or scalp, preferably skin.

The composition according to the present invention can be used, for example, as a make-up product.

The compositions according to the invention are also, for example, for facial and / or body, liquid to semi-liquid consistency, such as milk, somewhat rich creams, cream gels and pasty care products and / or sun protection products. It can also be used. These may optionally be packaged in aerosol form or in mousse or spray form.

According to the present invention, the composition according to the invention in the form of an evaporative fluid lotion is applied to the skin or hair in the form of fine particles using a pressurizing device. According to the invention, the apparatus is well known to those of skill in the art and includes a non-aerosol pump or "atomizer", an aerosol container containing an 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 in the range of 15% by weight to 50% by weight with respect to the total weight of the composition.

Since the composition according to the present invention (e) contains at least one organic UV filter, the composition and the cosmetic method according to the present invention may be applied to the skin, especially the skin of the face, due to the UV shielding effect provided by the organic UV filter. A beauty effect can be imparted to a keratin substance.

The UV shielding effect can be the basis for the care and / or make-up of keratinous substances such as skin. By forming a substantially uniform or homogeneous film on the keratin substance, an even or uniform UV shielding effect can be obtained. Cosmetological effects may include controlling skin darkening, improving facial skin color and uniformity, and / or treating 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. In the use of particles and (d) a second water-insoluble particle, the dispersion is:
(a) Continuous phase and
(b) Containing at least one dispersed phase in the continuous phase, which is different from component (c).
The composition further comprises (e) at least one organic UV filter.
The composition optionally comprises at least one surfactant in an amount of 1% by weight or less relative to the total mass of the composition.
Can be used.

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

(Examples 1 and 2 and Comparative Examples 1 to 3)
The compositions of the formulations shown in Table 1 were prepared by mixing the ingredients shown in Table 1. The numerical values of the amounts of the components shown in Table 1 are all based on "mass%" as an active raw material.

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

[evaluation]
The stability and tactile sensation of the compositions of Examples 1 and 2 and Comparative Examples 1 to 3 were evaluated as follows.

1. In vitro SPF
For each of the compositions of Examples 1-2 and Comparative Examples 1-3, the Sunlight Protective Index (SPF) was calculated by BL Diffey, J. Soc. Cosmet. Chem., Vol. 40, pp. 127-133, (1989). ), The measurement was performed according to the "in vitro" method.

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

The results are shown in Table 1.

2. Non-greasy skin feel An expert sensory examiner applied each of the compositions of Examples 1 and 2 and Comparative Examples 1 to 3 and evaluated the tactile sensation. Each sensory tester takes each composition on a finger and then applies it to the forearm at a rate of 2 mg / cm ² to assess the sticky feel, with a score from 1 (sticky feel) to 5 (non-sticky feel). Then, based on the average score, they were classified into the following three categories.
○○: Excellent (5.0-3.5)
×: Somewhat defective (3.5-2.0)
XX: Defective (1.9-1.0)

The results are shown in Table 1.

3. Stability Each of the compositions of Examples 1 and 2 and Comparative Examples 1 to 3 was filled in a transparent glass bottle and kept at 60 ° C. for 1 month. One month later, 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 immediately after preparation. Almost no separation or aggregation was observed.)
×: Normal (some separation or aggregation was observed)
XX: Defective (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 at 60 ° C. for 1 month. The composition of Example 1 also showed good tactile sensations such as non-greasy skin feel. Furthermore, the composition of Example 1 had a high SPF value.

The composition of Comparative Example 1 contained polymethylsilsesquioxane as compared to the composition of Example 1, but did not contain silylated silica. 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 a good tactile sensation such as a non-greasy skin feel. Furthermore, the composition of Comparative Example 1 did not have a high SPF value.

The comparison between Example 1 and Comparative Example 1 demonstrates that the addition of silylated silica can increase the SPF value and impart a good haptic feel such as non-greasy skin feel.

The composition of Comparative Example 2 contained silylated silica but not polymethylsilsesquioxane as 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 a good tactile sensation such as a non-greasy skin feel. Furthermore, the composition of Comparative Example 2 had a high SPF value.

Comparisons between Example 1 and Comparative Example 2 demonstrate that the addition of polymethylsylsesquioxane can provide a pickering emulsion form that is stable for one month even at temperatures 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 sensations such as non-greasy 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 a good tactile sensation such as a non-greasy skin feel. Furthermore, the composition of Comparative Example 3 did not show a very high SPF value.

The 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-greasy skin feel.

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

Claims (13)

A composition in the form of a pickering emulsion,
(a) Continuous phase,
(b) component (c) and different from (d), (a) at least one dispersed phase in the continuous phase,
(c) At least one first water-insoluble particle comprising at least one polyalkylsilsesquioxane , as well as
(d) Containing at least one second water-insoluble particle containing hydrophobic silica,
(e) Further include at least one organic UV filter,
(a) The continuous phase contains at least one fatty substance and (b) the dispersed phase contains water.
(c) The amount of the first water-insoluble particles is 0.01 to 20% by mass with respect to the total mass of the composition.
(d) The amount of the second water-insoluble particles is 0.01 to 20% by mass with respect to the total mass of the composition.
Contains at least one surfactant in an amount of 1% by weight or less based on the total mass of the composition.
Composition. The composition according to claim 1, wherein the fatty substance is in the form of a liquid at room temperature and atmospheric pressure. The composition according to claim 1 or 2, wherein the fatty substance is selected from polar oils. The polar oils are C ₁₂ to C ₁₅ alcohol benzoate, diisopropyl sebacate, lauroyl sarcosine isopropyl, dicaprylyl carbonate, 2-phenylethyl benzoate, butyl octyl salicylate, 2-octyldodecyl neopentate, dicapryryl ether, isosetyl stearate, The third aspect of claim 3, which is selected from the group consisting of isodecyl neopentate, isononyl isononanoate, isopropyl myristate, isopropyl palmitate, isostearyl behenate, myristyl myristate, octyl palmitate, tridecyl trimeritoate, and mixtures thereof. Composition. The composition according to any one of claims 1 to 4, wherein the amount of the fatty substance is 30% by mass or more with respect to the total mass of the composition. (c) The composition according to any one of claims 1 to 5 , wherein the amount of the first water-insoluble particles is 0.05 to 10 % by mass with respect to the total mass of the composition. The composition according to any one of claims 1 to 6 , wherein the hydrophobic silica is silylated silica. (d) The composition according to any one of claims 1 to 7 , wherein the amount of the second water-insoluble particles is 0.05 to 10 % by mass with respect to the total mass of the composition. The composition according to any one of claims 1 to 8 , wherein the amount of water is 70% by mass or less with respect to the total mass of the composition. (e) The composition according to any one of claims 1 to 9 , wherein the organic UV filter is a lipophilic or oil-soluble organic UV filter. (e) Organic UV filters include butylmethoxydibenzoylmethane, ethylhexyl methoxycinnamate, ethylhexyl salicylate, homosalate, butylmethoxydibenzoylmethane, octocrylene, benzophenone-3, n-hexyl 2- (4-diethylamino-2-hydroxy). Benzoyl) benzoate, 4-methylbenzylene camphor, bis (ethylhexyloxyphenyl) methoxyphenyltriazine, ethylhexyltriazone, diethylhexylbutamidotriazone, 2,4,6-tris (dineopentyl 4'-aminobenzalmaronate)- s-Triazine, 2,4,6-Tris (diisobutyl 4'-aminobenzalmaronate)-s-triazine, 2,4-bis (dineopentyl 4'-aminobenzalmaronate)-6- (n-butyl) 4'-Aminobenzoate) -s-triazine, 2,4,6-tris (biphenyl-4-yl) -1,3,5-triazine, 2,4,6-tris (terphenyl) -1,3, 5-Triazine, Drometrizoletrisiloxane, Polysilicone-15,1,1-dicarboxy (2,2'-dimethylpropyl) -4,4-diphenylbutadiene, 2,4-bis [4- [5-( 1,1-dimethylpropyl) benzoxazole-2-yl] phenylimino] -6-[(2-ethylhexyl) imino] -1,3,5-triazine, terephthalylidenedicampharsulfonic acid, and mixtures thereof The composition according to any one of claims 1 to 10 , which is selected from the group consisting of. (e) The composition according to any one of claims 1 to 11 , wherein the amount of the organic UV filter is 50% by mass or less with respect to the total mass of the composition. A method for cosmetology of a keratin substance, which comprises a step of applying the composition according to any one of claims 1 to 12 to the keratin substance.