WATER-IN-OIL EMULSION COMPRISING A PARTICULAR EMULSIFYING SYSTEM, A LIPOPHILIC CLAY, AND AN ORGANOPOLYSILOXANE ELASTOMER POWDER COATED WITH A SILICONE RESIN

Abstract

The present invention relates to a composition, in particular comprising a physiologically acceptable medium, in particular for coating keratin materials, more particularly for making up and/or caring for keratin materials such as the skin, a) a continuous oily phase, and b) at least one discontinuous aqueous phase dispersed in said oily phase; c) at least one emulsifying system comprising: i) at least one fatty acid ester of a polyol and ii) at least one polymer of polyoxyethylenated fatty acid ester of glycol; and d) at least one lipophilic clay; e) at least one organopolysiloxane elastomer powder coated with a silicone resin. The invention also relates to a process for coating keratin materials, more particularly for making up and/or caring for keratin materials, such as the skin, characterized in that it comprises the application to the keratin materials of a composition as defined previously.

Claims

1: A composition, in the form of a water-in-oil emulsion comprising: a) a continuous oily phase; b) at least one discontinuous aqueous phase dispersed in said oily phase; c) at least one emulsifying system comprising: i) at least one fatty acid ester of a polyol and ii) at least one polymer of polyoxyethylenated fatty acid ester of glycol; d) at least one lipophilic clay; and e) at least one organopolysiloxane elastomer powder coated with a silicone resin.

2: The composition according to claim 1, wherein the fatty acid ester of a polyol is polyglyceryl-4 diisostearate polyhydroxystearate sebacate of formula: ##STR00005## in which PHS denotes polyhydroxystearic acid and IS denotes isostearic acid, having the INCI name: Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate.

3: The composition according to claim 1, wherein the polymer of polyoxyethylenated fatty acid ester of glycol is polyethylene glycol dipolyhydroxystearate containing 30 EO having the INCI name: PEG-30 Dipolyhydroxystearate.

4: The composition according to claim 1, wherein: i) the fatty acid ester of a polyol is preferably present in the composition in contents ranging from 0.1% to 5% by weight, relative to the total weight of the composition; and ii) the polymer of polyoxyethylenated fatty acid ester of glycol is present in the composition in contents ranging from 0.1% to 5% by weight, relative to the total weight of the composition.

5: The composition according to claim 1, wherein the lipophilic clay is selected from the group consisting of bentonites which have been hydrophobically modified and hectorites which have been hydrophobically modified.

6: The composition according to claim 1, wherein the lipophilic clay is present in the composition in concentrations ranging from 0.1% to 5% by weight, relative to the total weight of the composition.

7: The composition according to claim 1, wherein the organopolysiloxane elastomer powder is coated with a silsesquioxane resin.

8: The composition according to claim 1, wherein the organopolysiloxane elastomer powder coated with silicone resin is present in a content ranging from 0.1% to 10% by weight, relative to the total weight of said composition.

9: The composition according to claim 1, comprising at least one additive selected from the group consisting of: active agents; sunscreens; pigments; fillers; water-soluble colorants and/or liposoluble colorants; and mixtures thereof.

10: The composition according to claim 1, comprising at least one pigment.

11: The composition according to claim 1, wherein the composition is in the form of a foundation.

12: A process for coating keratin materials, comprising applying the composition according to claim 1 to the keratin materials.

Description

EXAMPLE: FOUNDATION IN THE FORM OF A WATER/OIL EMULSION

[0540]

TABLE-US-00001 Phase Ingredients EX 1 (invention) A1 POLYGLYCERYL-4 DIISOSTEARATE/ 0.75 POLYHYDROXYSTEARATE SEBACATE (ISOLAN GPS from EVONIK) PEG-30 DIPOLYHYDROXYSTEARATE 1.00 (CITHROL DPHS-SO-(MV) from the company CRODA A2 HOMOSALATE 10 ETHYLHEXYL SALICYLATE 5 OCTOCRYLENE 7 A3 DODECAMETHYLPENTASILOXANE 16.00 PDMS 2 CST (SILICONE FLUID 2CS from DOW CORNING) A4 DISTEARDIMONIUM HECTORITE 0.75 (BENTONE V38 from ELEMENTIS) A5 VINYL DIMETHICONE/METHICONE 2.00 SILSESQUIOXANE CROSSPOLYMER (KSP 100 from SHIN ETSU) A6 VITAMIN E TOCOPHEROL 1.00 B PROPANEDIOL 5 SCUTELLARIA BAICALENSIS ROOT 0.2 EXTRACT (BAICALIN 95 MM from MMP) MAGNESIUM SULFATE 0.7000 WATER qs 100 PHENOXYETHANOL 0.50 NIACINAMIDE 2 CAFFEINE 1 C ALCOHOL 5 D YELLOW IRON OXIDE COATED WITH 14 ALUMINIUM STEAROYL GLUTAMATE RED IRON OXIDE COATED WITH ALUMINIUM STEAROYL GLUTAMATE BLACK IRON OXIDE COATED WITH ALUMINIUM STEAROYL GLUTAMATE TITANIUM DIOXIDE COATED WITH ALUMINIUM STEAROYL GLUTAMATE

Preparation Protocol

Preparation of the Aqueous Phase B:

[0541] In a glass beaker: the Niacinamide was dissolved in water with stirring using a magnetic bar, then the caffeine was added in order to obtain a transparent solution, then the baicalin was added in order to obtain a clear yellow transparent solution with a pH of 4.7 and then the MgSO.sub.4 salt, propanediol and phenoxyethanol were added in order to obtain a clear yellow transparent solution with a pH of 4.75.

Preparation of the Oily Phase:

[0542] In a capsule, a part of the silicone (two times the amount of clay) was taken in order to wet the clay with a flexible spatula. On a hot plate, in the main beaker, the ethylhexyl salicylate was heated with the PEG-30 dipolyhydroxystearate and the polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate to around 55 C., until the PEG-30 dipolyhydroxystearate had melted, and then the mixture was cooled by adding the other two sunscreens (the temperature drops to 30 C.) and the rest of the silicone was added.

Emulsification:

[0543] The aqueous phase was added little by little, with stirring on a Moritz stirrer, to the oily phase in order to obtain a concentrated white base, the stirring speed was increased and the mixture was left to stir for 10 minutes until a fluid mixture was obtained. The mixture of modified clay and volatile silicone oil was added to the white base and the resulting mixture was stirred in a turbine very strongly in order to activate the clay, and was left to stir for 15 minutes until the mixture had thickened. The KSP 100 was added, with stirring on a Moritz stirrer, and the mixture was left for 10 minutes until it had thickened. The vitamin E and then the pigments were added until there was good development of the colour. The formula was then debubbled.

[0544] After production, the appearance of formula 1 at ambient temperature was smooth, uniform and fluid. The stability of formula 1, which is placed in a 30 ml transparent glass mortar for preparing ointment, so that it fills it to of its volume, was evaluated: [0545] at ambient temperature for 2 months; [0546] in an incubator at 4 C. for 2 months; [0547] in an incubator at 45 C. for 2 months.

[0548] The results obtained are indicated in the following table:

TABLE-US-00002 Stability measured EX 1 (invention) Ambient temperature for 2 months Stable 4 C. for 2 months Stable 45 C. for 2 months Stable

[0549] The composition of Example 1 is storage-stable equally at ambient temperature, 4 C. and 45 C. After application, it has good sensory cosmetic properties, such as a non-tacky effect, a non-greasy effect, the absence of an unpleasant film sensation after application, and a feeling of lightness.