Anhydrous antiperspirant composition in aerosol form comprising an antiperspirant active agent and a water-insoluble film-forming block ethylenic polymer

Patent metadata

Field	Value
Publication number	US-10350149-B2
Application number	US-201415105653-A
Country	US
Kind code	B2
Filing date	Dec 18, 2014
Priority date	Dec 19, 2013
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

Anhydrous antiperspirant composition in aerosol form comprising an antiperspirant active agent and a water-insoluble film-forming block ethylenic polymer The present invention relates to an anhydrous composition in aerosol form containing: i) an oily phase comprising, in a physiologically acceptable medium: —at least one volatile oil, and —one or more antiperspirant active agents chosen from aluminum and/or zirconium salts, and —one or more water-insoluble film-forming block ethylenic polymers comprising 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 ii) one or more propellants; the said oily phase containing less than 15% by weight and even more preferably less than 12% by weight of non-volatile polydimethylsiloxane relative to the total weight of the oils. The invention also relates to a cosmetic process for treating human perspiration, to a use of the same and to an aerosol device using the said cosmetic composition.

First claim

The invention claimed is:

1. An anhydrous composition in aerosol form comprising:
i) a liquid phase comprising an oily phase comprising, in a physiologically acceptable medium:
at least one volatile oil,
at least one antiperspirant active agent chosen from aluminium and/or zirconium salts, and
at least one water-insoluble film-forming block ethylenic polymer comprising a first block with a glass transition temperature (Tg) of greater than or equal to about 85° C. and a second block with a Tg of less than or equal to about 20° C., and

ii) at least one propellant;
the oily phase containing less than about 11% by weight of non-volatile polydimethylsiloxane, relative to the total weight of the oils,
the second block comprising at least one monomer with a Tg of less than or equal to about 20° C., chosen from the following monomers, alone or as a mixture:
acrylates of formula CH 2 ═CHCOOR 3 , wherein R 3 is chosen from a linear or branched C 1 to C 12 alkyl group, with the exception of the tert-butyl group, wherein at least one heteroatom chosen from O, N and S is optionally intercalated, the alkyl group optionally substituted with at least one substituent chosen from hydroxyl groups or halogen atoms;
methacrylates of formula CH 2 ═C(CH 3 )—COOR 4 , wherein R 4 is chosen from a linear or branched C 6 to C 12 alkyl group wherein at least one heteroatom chosen from O, N and S is optionally intercalated, the alkyl group optionally substituted with at least one substituent chosen from hydroxyl groups or halogen atoms;
vinyl esters of formula R 5 —CO—O—CH═CH 2 in which R 5 is chosen from a linear or branched C 4 to C 12 alkyl group;
C 4 to C 12 alkyl vinyl ethers;
N—(C 4 to C 12 )alkyl acrylamides; or
monomers of formula (I) below, alone or as a mixture:

wherein:
R 1 is a hydrogen atom or a methyl radical;
Z is a divalent group chosen from —COO—, —CONH—, —CONCH 3 —, —OCO—, —O—, —SO 2 — —CO—O—CO—, or —CO—CH 2 —CO—;
x is 0 or 1;
R 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 ranging from 3 to 300; and
R 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;

wherein the anhydrous composition exhibits improved transfer-resistance compared to an anhydrous composition without the at least one water-insoluble film-forming block ethylenic polymer, as measured by grey level of a fabric when sprayed in aerosol form.

2. The composition according to claim 1 , wherein the at least one antiperspirant agent chosen from aluminium salts are chosen from aluminium chlorohydrate, aluminium chlorohydrex, aluminium chlorohydrex PEG, aluminium chlorohydrex PG, aluminium dichlorohydrate, aluminium dichlorohydrex PEG, aluminium dichlorohydrex PG, aluminium sesquichlorohydrate, aluminium sesquichlorohydrex PEG, aluminium sesquichlorohydrex PG, alum salts, aluminium sulfate, aluminium zirconium octachlorohydrate, aluminium zirconium pentachlorohydrate, aluminium zirconium tetrachlorohydrate, or aluminium zirconium trichlorohydrate.

3. The composition according to claim 1 , wherein the first and second blocks are linked together via an intermediate segment comprising at least one constituent monomer of the first block and at least one constituent monomer of the second block.

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

5. The composition according to claim 1 , wherein the first block with a Tg of greater than or equal to about 85° C. comprises at least one monomer with a Tg of greater than or equal to about 85° C., chosen from methyl methacrylate, tert-butyl (meth)acrylate, isobornyl (meth)acrylate, or mixtures thereof.

6. The composition according to claim 1 , wherein the second block with a Tg of less than or equal to about 20° C. of at least one water-insoluble film-forming block ethylenic polymer comprises at least one monomer with a Tg of less than or equal to about 20° C., chosen from methyl acrylate, isobutyl acrylate, 2-ethylhexyl acrylate, poly(ethylene glycol) (meth)acrylates, alkylpoly(ethylene glycol) (meth)acrylates, methylpoly(ethylene glycol) methacrylates, or mixtures thereof, with the exception of the tert-butyl group.

7. The composition according to claim 1 , wherein the at least one water-insoluble film-forming block ethylenic polymer is chosen from:
a poly(isobornyl acrylate/isobornyl methacrylate/isobutyl acrylate/acrylic acid) polymer, or
an isobornyl acrylate/isobornyl methacrylate/PEG methacrylate/acrylic acid statistical polymer.

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

9. The composition according to claim 1 , wherein the weight ratio between the liquid phase and the propellant gas ranges from about 5/95 to about 50/50.

10. The composition according to claim 1 , wherein the weight ratio between the liquid phase and the propellant gas ranges from about 10/90 to about 40/60.

11. The composition according to claim 1 , wherein the weight ratio between the liquid phase and the propellant gas ranges from about 15/85 to about 30/70.

12. The composition according to claim 1 , wherein the at least one volatile oil is chosen from C 8 -C 16 volatile hydrocarbon-based oils, C 8 -C 16 isoalkanes, linear C 8 -C 16 alkanes, or mixtures thereof.

13. The composition according to claim 12 , wherein the at least one volatile oil is isododecane.

14. The composition according to claim 1 , wherein the volatile oil is present in an amount ranging from about 50% to about 100% by weight, relative to the total amount of oil.

15. The composition according to claim 1 , further comprising at least one moisture absorber chosen from perlites or expanded perlites.

16. A method for treating human perspiration, the method comprising applying to the surface of the skin an effective amount of the composition comprising:
i) an oily phase comprising, in a physiologically acceptable medium:
at least one volatile oil,
at least one antiperspirant active agent chosen from aluminium and/or zirconium salts, and
at least one water-insoluble film-forming block ethylenic polymer comprising a first block with a glass transition temperature (Tg) of greater than or equal to about 85

Assignees

• Oreal

Inventors

• Aubrun Odile
• Jalenques Xavier
• Sebillotte-Arnaud Laurence

Classifications

• A61Q15/00

  Anti-perspirants or body deodorants (deodorisation of air A61L9/00) · CPC title

• A61K8/90

  Block copolymers (A61K8/89 takes precedence) · CPC title

• A61K8/81

  obtained by reactions involving only carbon-to-carbon unsaturated bonds · CPC title

• A61K8/31

  Hydrocarbons · CPC title

• A61K8/28

  Zirconium; Compounds thereof · CPC title