ANHYDROUS COMPOSITION IN AEROSOL FORM COMPRISING AN ANTIPERSPIRANT ACTIVE AGENT AND A WATER-INSOLUBLE FILM-FORMING BLOCK ETHYLENIC POLYMER AND A PHENYL SILICONE

Abstract

The present invention relates to an anhydrous composition in aerosol form comprising, in particular in a physiologically acceptable medium: a) an oily phase comprising i) at least one volatile oil, and ii) at least one nonvolatile hydrocarbon-based oil, and iii) at least one phenyl silicone, and b) at least one antiperspirant active agent chosen from aluminum and/or zirconium salts or complexes, c) at least one water-insoluble film-forming block ethylenic polymer d) at least one propellant.

The invention also relates to a cosmetic process for treating human perspiration, and optionally the body odors associated with human perspiration, especially underarm odors, comprising the application of said composition to a surface of the skin.

Claims

1. An anhydrous composition in aerosol form comprising, in particular in a physiologically acceptable medium: a) an oily phase comprising i) at least one volatile oil, and ii) at least one nonvolatile hydrocarbon-based oil, and iii) at least one phenyl silicone, and b) at least one antiperspirant active agent chosen from aluminum and/or zirconium salts or complexes, and c) at least one water-insoluble film-forming block ethylenic polymer, and d) at least one propellant.

2. The composition as claimed in claim 1, wherein the aluminum and/or zirconium salts or complexes are chosen from aluminum chlorohydrate, aluminum chlorohydrex, the aluminum chlorohydrex-polyethylene glycol complex, the aluminum chlorohydrex-propylene glycol complex, aluminum dichlorohydrate, the aluminum dichlorohydrex-polyethylene glycol complex, the aluminum dichlorohydrex-propylene glycol complex, aluminum sesquichlorohydrate, the aluminum sesquichlorohydrex-polyethylene glycol complex, the aluminum sesquichlorohydrex-propylene glycol complex, aluminum sulfate buffered with sodium aluminum lactate, aluminum zirconium octachlorohydrate, aluminum zirconium pentachlorohydrate, aluminum zirconium tetrachlorohydrate, aluminum zirconium trichlorohydrate, and the aluminum zirconium octachlorohydrex-glycine, aluminum zirconium pentachlorohydrex-glycine, aluminum zirconium tetrachlorohydrex-glycine and aluminum zirconium trichlorohydrex-glycine complexes.

3. The composition as claimed in claim 2, wherein the antiperspirant active agent is aluminum chlorohydrate and/or aluminum sesquichlorohydrate.

4. The composition as claimed in claim 1, wherein said at least one water-insoluble film-forming block ethylenic polymer comprises a first block with a glass transition temperature (Tg) of greater than or equal to 85° C. and a second block with a Tg of less than or equal to 20° C., and in that said first and second blocks are linked together via an intermediate segment comprising at least one constituent monomer of said first block and at least one constituent monomer of said second block.

5. The composition as claimed in claim 4, wherein the block with a Tg of greater than or equal to 85° C. comprises at least one monomer with a Tg of greater than or equal to 85° C., chosen from the following monomers, alone or as a mixture: the methacrylates of formula CH.sub.2═C(CH.sub.3)—COOR.sub.1 in which R.sub.1 represents a methyl or tert-butyl group; or a C.sub.6 to C.sub.12 cycloalkyl group; the acrylates of formula CH.sub.2═CH—COOR.sub.2 in which R.sub.2 represents a C.sub.6 to C.sub.12 cycloalkyl group or a tert-butyl group; the (meth)acrylamides of formula CH.sub.2═C(CH.sub.3)—CONR.sub.7R.sub.8 or CH.sub.2═CH—CONR.sub.7R.sub.8, in which R.sub.7 and R.sub.8, which may be identical or different, represent a hydrogen atom or a methyl or isopropyl group; or R.sub.7 represents H and R.sub.8 represents a branched C.sub.3 to C.sub.5 group; styrene and derivatives thereof such as chlorostyrene.

6. The composition as claimed claim 4, wherein the block with a Tg of greater than or equal to 85° C. comprises at least one monomer with a Tg of greater than or equal to 85° C., chosen from methyl methacrylate, tert-butyl (meth)acrylate and isobornyl (meth)acrylate, and mixtures thereof.

7. The composition as claimed in claim 4, wherein the block with a Tg of less than or equal to 20° C. comprises at least one monomer with a Tg of less than or equal to 20° C., chosen from the following monomers, alone or as a mixture: the acrylates of formula CH.sub.2═CHCOOR.sub.3, with R.sub.3 representing a linear or branched C.sub.1 to C.sub.12 alkyl group, with the exception of the tert-butyl group, in which one or more heteroatoms chosen from O, N and S are optionally intercalated, said alkyl group also optionally being substituted with one or more substituents chosen from hydroxyl groups and halogen atoms; the methacrylates of formula CH.sub.2═C(CH.sub.3)—COOR.sub.4, with R.sub.4 representing a linear or branched C.sub.6 to C.sub.12 alkyl group, in which one or more heteroatoms chosen from O, N and S are optionally intercalated, said alkyl group also optionally being substituted with one or more substituents chosen from hydroxyl groups and halogen atoms; the vinyl esters of formula R.sub.5—CO—O—CH═CH.sub.2 in which R.sub.5 represents a linear or branched C.sub.4 to C.sub.12 alkyl group; C.sub.4 to C.sub.12 alkyl vinyl ethers; N—(C.sub.4 to C.sub.12)alkyl acrylamides; the monomers of formula (I) below, alone or as a mixture: ##STR00010## in which: R.sub.1 is a hydrogen atom or a methyl radical; Z is a divalent group chosen from —COO—, —CONH—, —CONCH.sub.3—, —OCO—, —O—, —SO.sub.2— —CO—O—CO— and —CO—CH.sub.2—CO—; x is 0 or 1; R.sub.2 is a linear, branched or cyclic, saturated or unsaturated, optionally aromatic divalent carbon-based radical, of 1 to 30 carbon atoms, which may comprise 1 to 18 heteroatoms chosen from O, N, S, F, Si and P; m is 0 or 1; n is an integer between 3 and 300 inclusive; R.sub.3 is a hydrogen atom or a linear, branched or cyclic, saturated or unsaturated, optionally aromatic carbon-based radical, of 1 to 30 carbon atoms, which may comprise 1 to 20 heteroatoms chosen from O, N, S, F, Si and P.

8. The composition as claimed in claim 4, wherein the block with a Tg of less than or equal to 20° C. comprises at least one monomer with a Tg of less than or equal to 20° C., chosen from alkyl acrylates in which the alkyl chain comprises from 1 to 10 carbon atoms, with the exception of the tert-butyl group; and also poly(ethylene glycol) (meth)acrylates and alkylpoly(ethylene glycol) (meth)acrylates, more particularly methylpoly(ethylene glycol) methacrylates; and mixtures thereof.

9. The composition as claimed in claim 1, wherein the water-insoluble film-forming block ethylenic polymer is chosen from: a poly(isobornyl acrylate/isobornyl methacrylate/isobutyl acrylate/acrylic acid) polymer, an isobornyl acrylate/isobornyl methacrylate/PEG methacrylate/acrylic acid random polymer and more particularly a poly(isobornyl acrylate/isobornyl methacrylate/isobutyl acrylate/acrylic acid) polymer.

10. The composition as claimed in claim 1, wherein the propellant is chosen from dimethyl ether, volatile hydrocarbons such as n-butane, propane, isopropane, isobutane, pentane and isopentane, and mixtures thereof, optionally with at least one chlorohydrocarbon and/or fluorohydrocarbon.

11. The composition as claimed in claim 1, wherein the weight ratio between the liquid phase and the propellant gas varies in a ratio from 5/95 to 50/50.

12. The composition as claimed in claim 1, wherein the volatile oil is chosen from C.sub.8-C.sub.16 volatile hydrocarbon-based oils.

13. The composition as claimed in claim 1, wherein the nonvolatile hydrocarbon-based oil(s) is (are) chosen from hydrogenated polyisobutene oils, ethers, fatty acid esters, fatty alcohols and mixtures thereof.

14. The composition as claimed in claim 1, wherein the proportion of phenyl silicone, relative to all the oils, preferably ranges from 0.1% to 20%.

15. The composition as claimed in claim 1, wherein the nonvolatile phenyl silicone is chosen from the phenyl silicones of formula (VII) below: ##STR00011## in which: R.sub.1 to R.sub.6, independently of one another, are saturated or unsaturated, linear, cyclic or branched C.sub.1-C.sub.30 hydrocarbon-based radicals, m, n and p are, independently of one another, integers between 0 and 100, with the proviso that the sum n+m is between 1 and 100.

16. The composition as claimed in claim 1, wherein the viscosity at 25° C. of the phenyl silicone is less than 1000 mm.sup.2/s.

17. The composition as claimed in claim 1, wherein the phenyl silicone is chosen from phenyl trimethicones.

18. The composition as claimed in claim 1, wherein it also comprises one or more moisture absorbers chosen from perlites.

19. A cosmetic process for treating human perspiration, and optionally the body odors associated with human perspiration, which comprises applying to the surface of the skin an effective amount of the composition as defined in claim 1.

20. An aerosol device consisting of a container comprising an aerosol composition as defined according to claim 1 and of a means for dispensing said aerosol composition.

Description

EXAMPLE 1

[0316] The formulae tested in aerosol form comprise a base manufactured according to the process described below and containing the ingredients mentioned in the following table:

TABLE-US-00002 Fluid Fluid Fluid Example 1 Comparative Comparative Phase Ingredients (invention) example C1 example C2 A Isopropyl palmitate.sup.(1) 9.15 12.29 9.15 Isododecane.sup.(2) 32 32 32 Acrylic acid/isobutyl 16 16 16 acrylate/isobornyl acrylate copolymer (50% in isododecane).sup.(3) Phenyl Trimethicone.sup.(4) 3.14 0 — 22.5 cSt Diphenyl — 0 3.14 Dimethicone .sup.(5) 1000 cSt B Disteardimonium 2.6 2.6 2.6 hectorite .sup.(6) C Propylene carbonate .sup.(7) 0.78 0.78 0.78 D Aluminum 35 35 35 chlorohydrate .sup.(8) Perlite .sup.(9) 1.33 1.33 1.33 .sup.(1)sold under the trade name Isopropyl Palmitate by the company Cognis (BASF) .sup.(2)sold under the trade name Isododecane by the company Ineos .sup.(3)sold under the trade name Mexomere PAS by the company Chimex .sup.(4)sold under the trade name Dow Corning Cosmetic Grade Fluid by the company Dow Corning .sup.(5) sold under the trade name Belsil PDM1000 by the company Wacker .sup.(6) sold under the trade name Bentone 38VCG by the company Elementis .sup.(7) sold under the trade name Jeffsol propylene carbonate by the company Huntsman .sup.(8) sold under the trade name Reach 103 by the company Summitreheis .sup.(9) sold under the trade name Optimat 2550 OR by the company Worldminerals (Imerys)
Phase A was mixed with stirring. Phase (B) was introduced slowly into phase (A) and the mixture was then left to swell for five minutes. (C) was introduced. The mixture was stirred vigorously until good homogenization was obtained. The aluminum chlorohydrate and the perlite (D) were then added portionwise. Stirring was continued to obtain good homogenization.
The bases thus formulated were packaged in cans and a propellant was added to the above preparations according to the following schemes:

TABLE-US-00003 Comparative Comparative Aerosol Example 1 example C1 example C2 Fluid 15 — — Example 1 Fluid — 15 — Comparative Example C1 Fluid — — 15 Comparative Example C2 Isobutane 85 85 85

[0317] Results Regarding Transfer-Resistance Efficacy and Regarding Tackiness

[0318] The example 1 aerosol with a phenyl silicone having a viscosity at 25° C. of 22.5 cSt was sprayed under the conditions described above and the results obtained in comparison with the aerosol without phenyl silicone (comparative C1) and with a phenyl silicone having a viscosity at 25° C. of 1000 cSt (comparative C2) are described in the table below:

TABLE-US-00004 Example 1 Example 2 with Phenyl with Diphenyl Trimethicone Comparative Trimethicone (invention) Example C1 (invention) having a without having a viscosity at Phenyl viscosity at Aerosol 25° C. of 22.5 cSt Trimethicone 25° C. of 1000 cSt Level of 48.52 ± 1.17 50.51 ± 1.54 50.29 ± 1.07 gray dry Level of 42.40 ± 0.36 48.33 ± 8.62 51.01 ± 1.67 gray with the artificial sweat Tackiness 40 low 150 high 100 medium

[0319] It was noted that, in the case of the composition of example 1, the persistence was lower when dry and with the artificial sweat than that of composition C1 and than that of the composition of example 2.

[0320] It was noted that the tacky effect was substantially decreased with examples 1 and 2 of the invention comprising a phenyl silicone compared with the very high tackiness of composition C1 not containing phenyl silicone.

EXAMPLE 2

[0321] The formulae tested in aerosol form comprise a base manufactured according to the process described below and containing the ingredients mentioned in the following table:

TABLE-US-00005 Preparation Comparative Invention Preparation Phase Ingredients Example 2 C3 A Isopropyl palmitate.sup.(1) 0.86 3.215 A Isododecane.sup.(2) 24 24 A Cocos nucifera 0.315 0.315 (coconut) oil.sup.(3) A Acrylic acid/isobutyl 12 12 acrylate/isobornyl acrylate copolymer (50% in isododecane).sup.(4) A Phenyl trimethicone .sup.(5) 2.355 0 B Disteardimonium 2.6 2.6 hectorite .sup.(6) C Propylene carbonate.sup.(7) 0.87 0.87 D Aluminum 35 35 chlorohydrate .sup.(8) D Aluminum 15 15 sesquichlorohydrate .sup.(9) Fragrance 7 7 .sup.(1)sold under the trade name Isopropyl Palmitate by the company Cognis (BASF) .sup.(2)sold under the trade name Isododecane by the company Ineos .sup.(3)sold under the trade name refined coconut oil GV 24/26 by the company Sio (ADM) .sup.(4)sold under the trade name Mexomere PAS by the company Chimex .sup.(5) sold under the trade name Dow Corning Cosmetic Grade Fluid by the company Dow Corning .sup.(6) sold under the trade name Bentone 38VCG by the company Elementis .sup.(7)sold under the trade name Jeffsol propylene carbonate by the company Huntsman .sup.(8) sold under the trade name Reach 103 by the company Summitreheis .sup.(9) sold under the trade name Reach 301 by the company Summitreheis
Phase A was mixed with stirring. Phase (B) was introduced slowly into phase (A) and the mixture was then left to swell for five minutes. (C) was introduced. The mixture was stirred vigorously until good homogenization was obtained. The aluminum chlorohydrate and the aluminum sesquichlorohydrate (D) were then added portionwise. Stirring was continued to obtain good homogenization. The fragrance was added. The bases thus formulated were packaged in cans and a propellant was added to the above preparations according to the following schemes:

TABLE-US-00006 Example 2 Comparative Aerosol (Invention) C3 Preparation 20 — Ex 2 Preparation — 20 C3 Isobutane 80 80

[0322] The example 2 aerosol with phenyl trimethicone, having a viscosity at 25° C. of 22.5 cSt, was sprayed under the conditions described above and the results obtained in comparison with the aerosol without phenyl trimethicone (comparative C3) are described in the table below:

TABLE-US-00007 Example 2 Comparative Example C3 with Phenyl without Phenyl Trimethicone 22.5 cSt Trimethicone Aerosol (invention) (outside the invention) Level of gray 47.2 ± 1.1 57.9 ± 0.9 dry Level of gray 45.80 ± 1.6  49.4 ± 1.5 with the artificial sweat Tackiness 40 low 120 high

[0323] It was noted that, in the case of the composition of example 2 with phenyl silicone, the transfer was lower than in the case of composition C3 without phenyl silicone.

[0324] It was noted that, in the case of the composition of example 2, the tackiness is judged to be low, while in the case of composition C3, the tackiness is judged to be very high.