# US 2014/0193471 A1 · Solid antiperspirant and/or deodorant composition in the form of a water-in-oil emulsion based on silicone emulsifiers and on waxes; method for treating body odours

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- Number: US 2014/0193471 A1
- Document ID: US20140193471A1
- Status: Published application
- Kind: A1
- Application number: 14/161,774
- Filed: 2014-01-23
- Published: 2014-07-10
- Earliest claimed: 2007-12-14
- Assignees: L'oreal
- Applicants: L'oreal
- Inventors: Cyril Lemoine; Patrick Forhan; Laurence Sebillotte-Arnaud; Xavier Jalenques
- Web page: https://patentgrep.com/patent/US20140193471A1

## CPC

- A61K 8/064: {Water-in-oil emulsions, e.g. Water-in-silicone emulsions}
- A61K 8/0229: {Sticks}
- A61K 8/26: Aluminium; Compounds thereof
- A61K 8/27: Zinc; Compounds thereof
- A61K 8/28: Zirconium; Compounds thereof
- A61K 8/45: Derivatives containing from 2 to 10 oxyalkylene groups
- A61K 8/8111: {Homopolymers or copolymers of aliphatic olefines, e.g. polyethylene, polyisobutene; Compositions of derivatives of such polymers}
- A61K 8/894: modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
- A61Q 15/00: Anti-perspirants or body deodorants (deodorisation of air A61L9/00)
- B29C 39/003: {characterised by the choice of material}
- A61K 2800/594: Mixtures of polymers
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)

## Abstract

The invention relates to a solid composition in the form of a water-in-oil emulsion comprising, in a cosmetically acceptable carrier: (i) at least one discontinuous aqueous phase, (ii) at least one fatty phase comprising at least one particular wax, (iii) at least one silicone emulsifier selected in the group consisting in alkyldimethicone copolyols of particular formula (I) and dimethicone copolyols of particular formula (II) and mixtures there of (iv) and at least one antiperspirant active agent and/or one deodorant active agent. The invention relates to a method for treating body odours associated with human perspiration, and in particular body odours which are especially underarm odours. The invention relates to a method for preparing a solid composition in the form of a water-in-oil emulsion as defined above.

## Claims

### Claim 1

Solid composition in the form of a water-in-oil emulsion comprising, in a cosmetically acceptable carrier:
i) at least one discontinuous aqueous phase;
ii) at least one fatty phase comprising at least one wax in the form of crystallites having a shape factor of greater than or equal to 2 and having a melting point of 70 to 110° C.;
iii) at least one silicone emulsifier selected in the group consisting of alkyldimethicone copolyols of particular formula (I) iii) at least one alkyldimethicone copolyol of formula (I) below:
in which:
R1 denotes a linear or branched, C12-C20, preferably C12-C18, alkyl group;
R2 denotes the group: —CnH2n—(—OC2H4—)x—(—OC3H6—)y—O—R3;
R3 denotes a hydrogen atom or a linear or branched alkyl radical containing from 1 to 12 carbon atoms;
a is an integer ranging from 1 to approximately 500;
b denotes an integer ranging from 1 to approximately 500;
n is an integer ranging from 2 to 12, and preferably from 2 to 5;
x denotes an integer ranging from 1 to approximately 50, and preferably from 1 to 30;
y denotes an integer ranging from 0 to approximately 49, and preferably from 0 to 29, with the proviso that, when y is other than zero, the ratio x/y is greater than 1, and preferably ranges from 2 to 11;
and/or a dimethicone copolyols of formula (II) below:
in which:
R4 denotes the group: —CmH2m—(—OC2H4—)s—(—OC3H6—)t—O—R5;
R5 denotes a hydrogen atom or a linear or branched alkyl radical containing from 1 to 12 carbon atoms;
c is an integer ranging from 1 to approximately 500;
d denotes an integer ranging from 1 to approximately 500;
m is an integer ranging from 2 to 12, and preferably from 2 to 5;
s denotes an integer ranging from 1 to approximately 50, and preferably from 1 to 30;
t denotes an integer ranging from 0 to approximately 50, and preferably from 0 to 30; with the proviso that the sum s+t is greater than or equal to 1; and mixtures there of iv) at least one antiperspirant active agent and/or one deodorant active agent.

### Claim 2 (depends on 1)

Composition according to claim 1, in which the alkyldimethicone copolyol emulsifier of formula (I) is cetyl PEG/PPG-10/1 dimethicone, and more particularly in the form of the mixture (polyglyceryl-4-stearate and cetyl PEG/PPG-10 and dimethicone and hexyl laurate).

### Claim 3 (depends on 1)

Composition according to claim 1, in which the dimethicone copolyol of formula (II) is PEG-18/PPG-18 dimethicone, and more particularly in the form of the mixture cyclopentasiloxane (and) PEG-18/PPG-18 dimethicone.

### Claim 4 (depends on 1)

Composition according to claim 1, containing as unique type of silicone emulsifier at least one emulsifier of formula (II).

### Claim 5 (depends on 1)

Composition according to claim 1, in which the wax crystallites have an average length ranging from 5 to 10 μm.

### Claim 6 (depends on 1)

Composition according to claim 1, in which the wax or waxes in the form of crystallites is (are) chosen from hydrocarbon-based, preferably linear, waxes of formula CnH2n+2 or paraffin waxes.

### Claim 7 (depends on 1)

Composition according to claim 1, in which the antiperspirant active agent is aluminum hydrochloride in activated or nonactivated form or aluminium zirconium pentahydrochloride.

### Claim 8 (depends on 1)

Composition according to claim 1, in which the deodorant active agent is chosen from 2,4,4′-trichloro-2′-hydroxydiphenyl ether, 2,4-dichloro-2′-hydroxydiphenyl ether, 3′,4′,5′-trichloro-salicylanilide, 1-(3′,4′-dichlorophenyl)-3-(4′-chloro-phenyl) urea, 3,7,11-trimethyldodeca-2,5,10-trienol; quaternary ammonium salts such as cetyltrimethyl-ammonium salts, cetylpyridinium salts, 1,3-diamino-propanetetraacetic acid (DPTA), 1,2-decanediol; zinc salts; chlorhexidine and salts thereof; sodium bicarbonate; salicylic acid and derivatives thereof; glycerol derivatives; and biguanide derivatives.

### Claim 9 (depends on 1)

Composition according to claim 1, also comprising at least one nonionic surfactant having an HLB of greater than or equal to 10, and preferably ranging from 10 to 12, in particular beheneth-10.

### Claim 10 (depends on 1)

Composition according to claim 1, also comprising a polyethylene glycol of molecular weight greater than 400 000 g/mol as thickener.

### Claim 11 (depends on 1)

Method for preparing a solid composition in the form of a water-in-oil emulsion as defined in claim 1, characterized in that it comprises at least the following steps:
(1) the fatty phase and the aqueous phase are mixed and the mixture is heated with stirring at a temperature ranging from 70° to 110° C. until a homogeneous composition is obtained;
(2) a third phase comprising at least one heat-sensitive ingredient is optionally added to said mixture at the same temperature;
(3) the stick is cast.

### Claim 12 (depends on 1)

Cosmetic method for treating body odours associated with perspiration, in particular underarm odours, consisting in applying, to the surface of the skin to be treated, an effective amount of a composition according to claim 1.

### Claim 13 (depends on 2)

Composition according to claim 2, containing as unique type of silicone emulsifier at least one emulsifier of formula (II).

### Claim 14 (depends on 3)

Composition according to claim 3, containing as unique type of silicone emulsifier at least one emulsifier of formula (II).

### Claim 15 (depends on 2)

Composition according to claim 2, in which the wax crystallites have an average length ranging from 5 to 10 μm.

### Claim 16 (depends on 3)

Composition according to claim 3, in which the wax crystallites have an average length ranging from 5 to 10 μm.

### Claim 17 (depends on 4)

Composition according to claim 4, in which the wax crystallites have an average length ranging from 5 to 10 μm.

### Claim 18 (depends on 2)

Composition according to claim 2, in which the wax or waxes in the form of crystallites is (are) chosen from hydrocarbon-based, preferably linear, waxes of formula CnH2n+2 or paraffin waxes.

### Claim 19 (depends on 3)

Composition according to claim 3, in which the wax or waxes in the form of crystallites is (are) chosen from hydrocarbon-based, preferably linear, waxes of formula CnH2n+2 or paraffin waxes.

### Claim 20 (depends on 4)

Composition according to claim 4, in which the wax or waxes in the form of crystallites is (are) chosen from hydrocarbon-based, preferably linear, waxes of formula CnH2n+2 or paraffin waxes.