EP3229759A1

EP3229759A1 - Deodorant emulsion containing a mixture of alkylpolyglycoside and fatty alcohol, an associative nonionic polyurethane polyether, a volatile hydrocarbon-based oil

Info

Publication number: EP3229759A1
Application number: EP15808602.5A
Authority: EP
Inventors: Francine Baldo
Original assignee: LOreal SA
Current assignee: LOreal SA
Priority date: 2014-12-12
Filing date: 2015-12-11
Publication date: 2017-10-18
Also published as: BR112017010231A2; FR3032613A1; RU2692476C2; RU2017124440A3; RU2017124440A; FR3032613B1; WO2016092107A1; MX2017007129A

Abstract

The present invention relates to an oil-in-water emulsion comprising: a) at least one continuous aqueous phase; and b) at least one oil phase dispersed in said aqueous phase and comprising at least one volatile hydrocarbon-based oil; and c) at least one mixture comprising at least one alkylpolyglycoside whose alkyl chain is linear or branched and comprises from 12 to 22 carbon atoms and at least one linear or branched fatty alcohol, having from 12 to 22 carbon atoms; d) at least one associative nonionic polyether polyurethane; e) at least one deodorant active agent. The present invention also relates to a method for the treatment of body odor and optionally of human perspiration, which consists in applying to a keratin material an emulsion as defined previously.

Description

DEODORANT EMULSION CONTAINING A MIXTURE OF ALKYLPOLYGLYCOSIDE AND FATTY ALCOHOL, AN ASSOCIATIVE NONIONIC POLYURETHANE POLYETHER, A VOLATILE HYDROCARBON- BASED OIL

The present invention relates to an oil-in-water emulsion containing:

a) at least one continuous aqueous phase; and

b) at least one oil phase dispersed in said aqueous phase and comprising at least one volatile hydrocarbon-based oil; and

c) at least one mixture comprising at least one alkylpolyglycoside whose alkyl chain is linear or branched and comprises from 12 to 22 carbon atoms and at least one linear or branched fatty alcohol, having from 12 to 22 carbon atoms; d) at least one associative nonionic polyether polyurethane;

e) at least one deodorant active agent.

The present invention also relates to a method for the treatment of body odor and optionally of human perspiration, which consists in applying to a keratin material an emulsion as defined previously. In the cosmetic field, it is well known to use, in topical application, deodorant products containing active substances such as antiperspirants, bactericides or odor-absorbers for reducing or even preventing body odor, in particular the generally unpleasant underarm odor. Many different types of deodorant compositions have been described in the literature and have appeared on the market in forms such as gels, sticks, creams, roll-ons or aerosols.

Among deodorant creams, three major types of formulation exist: anhydrous or soft solid formulations, water-in-oil emulsions and oil-in-water emulsions.

The soft solid anhydrous formulations and water-in-oil emulsions that are continuous oil-based substrates present the drawback of producing a greasy sensation upon application and a lack of fresh sensation or even insufficient deodorant effectiveness.

Deodorant oil-in-water emulsions with a continuous aqueous phase that are packaged in the form of roll-on balls are particularly sought after for their original cosmetic qualities in terms of the fresh sensation on the skin after application.

Today consumers demand effective deodorants having better sensorial properties all day long, in particular for roll-ons, which are often perceived as being sticky and taking time to dry during application. In patent EP1550435 antiperspirant formulations of the oil-in-water type are also known, containing

(A) at least one mixture comprising at least one alkylpolyglycoside whose alkyl chain is linear or branched and comprises from 12 to 22 carbon atoms and at least one linear or branched fatty alcohol, having from 12 to 22 carbon atoms; (B) at least one associative nonionic polyether polyurethane. These compositions are not completely satisfactory in terms of sensorial properties because they may lead to a perceptible sticky effect for the consumer. Therefore a need exists for finding new deodorant formulations that can be packaged in the form of roll-ons having good efficacy and in which the sticky effect is appreciably reduced relative to formulations known from the prior art.

The Applicant has discovered in an unexpected manner that this objective could be reached with an oil-in-water emulsion containing:

a) at least one continuous aqueous phase; and

e) at least one deodorant active agent. This type of oil-in-water emulsion appreciably reduces the stickiness upon application, leading to a slighter texture and a cleaner skin sensation.

This discovery forms the basis of the present invention. The present invention therefore firstly relates to an oil-in-water emulsion containing:

a) at least one continuous aqueous phase; and

e) at least one deodorant active agent.

The present invention secondly relates to a method for the treatment of body odor and optionally of human perspiration, which consists in applying to a keratin material an emulsion as defined previously. According to one particular form of the invention, the emulsion comprises a physiologically acceptable medium.

For the purposes of the present invention, the term "physiologically acceptable medium" denotes a medium that is suitable for the topical administration of a composition, i.e. a medium which is odorless and has no unpleasant appearance, and which is perfectly compatible with the topical route of administration. Such a medium is considered to be "physiologically acceptable" when it does not cause any tingling, tautness or redness unacceptable for the user. The expression "deodorant active agent" is understood to mean any substance capable of reducing, masking or absorbing human body odors, in particular underarm odors. The term "oil" means a fatty substance which is liquid at room temperature (25°C) and atmospheric pressure (760 mmHg, i.e. 10⁵ Pa). The oil may be volatile or non-volatile.

For the purposes of the invention, the term "volatile oil" is intended to mean an oil that is capable of evaporating on contact with the skin or the keratin fiber in less than one hour, at ambient temperature and atmospheric pressure. The volatile oils of the invention are volatile cosmetic oils that are liquid at ambient temperature with a non-zero vapor pressure, at ambient temperature and atmospheric pressure ranging in particular from 0.13 Pa to 40 000 Pa (10^"3 to 300 mmHg), in particular ranging from 1 .3 Pa to 13 000 Pa (0.01 to 100 mmHg) and more particularly ranging from 1 .3 Pa to 1300 Pa (0.01 to 10 mmHg).

The term "hydrocarbon-based oil" is intended to mean an oil mainly containing carbon and hydrogen atoms and possibly one or more functions chosen from hydroxyl, ester, ether and carboxylic functions.

The term "oil-in-water" means a composition comprising a continuous aqueous phase and an oil phase dispersed in the aqueous phase, where both phases are stabilized by an emulsifying system.

For the purposes of the present invention, the term "associative polymer" means a hydrophilic polymer that is capable, in an aqueous medium, of reversibly combining with itself or with other molecules. Their chemical structure more particularly comprises at least one hydrophilic region and at least one hydrophobic region.

The term "hydrophobic group" is intended to mean a radical or polymer comprising a saturated or unsaturated and linear or branched hydrocarbon-based chain. When the hydrophobic group denotes a hydrocarbon-based radical, it comprises at least 10 carbon atoms, preferably from 10 to 30 carbon atoms, in particular from 12 to 30 carbon atoms and more preferably from 18 to 30 carbon atoms. Preferentially, the hydrocarbon-based group is derived from a monofunctional compound. By way of example, the hydrophobic group may be derived from a fatty alcohol, such as stearyl alcohol, dodecyl alcohol or decyl alcohol, or else from a polyalkylenated fatty alcohol, such as Steareth-100. It may also denote a hydrocarbon polymer, for instance polybutadiene. ALKYLPOLYGLUCOSIDE/ FATTY ALCOHOL MIXTURE

The compositions in accordance with the invention comprise at least one mixture of:

a) at least one alkylpolyglycoside whose alkyl chain is linear or branched and comprises from 12 to 22 carbon atoms and b) at least one linear or branched fatty alcohol having from 12 to 22 carbon atoms.

In the composition, this mixture behaves as an emulsifying agent.

For the purposes of the present invention, the term "alkylpolyglycoside" means an alkylmonosaccharide (degree of polymerization 1 ) or an alkylpolyglycoside (degree of polymerization greater than 1 ).

Preferably the emulsifying fatty alcohol/alkylpolyglycoside mixture contains:

(a) from 5 to 60% by weight of alkylpolyglycoside(s);

(b) from 95 to 40% by weight of fatty alcohol(s) relative to the total weight of said emulsifying mixture.

The alkylpolyglycosides may be used alone or in the form of mixtures of several alkylpolyglycosides. They generally correspond to the following structure:

R(O)(G)_x in which the R substituent is a linear or branched C12-C22 alkyl substituent, G is a saccharide residue and x ranges from 1 to 5, preferably from 1 .05 to 2.5 and more preferentially from 1 .1 to 2.

The saccharide residue may be chosen from glucose, dextrose, saccharose, fructose, galactose, maltose, maltotriose, lactose, cellobiose, mannose, ribose, dextran, talose, allose, xylose, levoglucan, cellulose and starch. More preferentially, the saccharide residue denotes glucose.

It should also be noted that each unit of the polysaccharide part of the alkylpolyglycoside may be in a or β isomer form, in L or D form, and the configuration of the saccharide residue may be of furanoside or pyranoside type.

It is, of course, possible to use mixtures of alkylpolysaccharides, which may differ from each other in the nature of the borne alkyl unit and/or the nature of the bearing polysaccharide chain. Concerning the fatty alcohols that must be used, alone or in mixtures, in combination with alkylpolysaccharides in the emulsifying mixtures in accordance with the invention, these can be linear or branched fatty alcohols of synthetic or alternatively of natural origin, for example alcohols derived from plant material (coconut, palm kernel, palm, etc.) or animal material (tallow, etc.). Needless to say, other long-chain alcohols may also be used, for instance ether alcohols or Guerbet alcohols. Finally, use may also be made of certain fractions of alcohols of varying length of natural origin, for instance coconut (C12 to C16) or tallow (C16 to Cis) or compounds such as diols or cholesterol. According to a preferred embodiment of the present invention, the fatty alcohol(s) used are chosen from those containing from 12 to 22 carbon atoms and even more preferentially from 12 to 18 carbon atoms.

As particular examples of fatty alcohols that may be used in the context of the present invention, mention may be made especially of lauryl alcohol, cetyl alcohol, myristic alcohol, stearyl alcohol, isostearyl alcohol, palmitic alcohol, oleic alcohol, behenyl alcohol and arachidyl alcohol, which may thus be taken alone or as mixtures. In addition, it is particularly advantageous, as claimed in the present invention, to use together a fatty alcohol and an alkylpolysaccharide whose alkyl part is identical to that of the selected fatty alcohol.

The fatty alcohol/alkylpolyglycoside emulsifying mixtures as defined above are known as such. They are described in applications WO92/06778, WO95/13863 and WO98/47610 and prepared according to the preparation processes indicated in these documents.

Among the particularly preferred fatty alcohols/alkylpolyglycoside mixtures, mention may be made of the products sold by the company SEPPIC under the name Montanov®, such as the following mixtures:

Cetylstearyl alcohol/cocoyl glucoside - Montanov 82®

Arachidyl alcohol and behenyl alcohol/arachidyl glucoside - MONTANOV 802® Myristyl alcohol/myristyl glucoside - Montanov 14®

Cetylstearyl alcohol/cetylstearyl glucoside - Montanov 68®

Ci₄-C22 alcohols/Ci2-C2o alkylglucoside - Montanov L®

Cocoyl alcohol/cocoyl glucoside - Montanov S®

Isostearyl alcohol/isostearyl glucoside - Montanov WO 18® Fatty alcohol/alkylpolyglycoside mixtures chosen from the following will be preferred:

Cetylstearyl alcohol/cetylstearyl glucoside;

Ci₄-C22 /C12-C20 alkylglucoside alcohols and even more particularly the C14-C22 /C12-C20 alkylglucoside alcohols mixture such as the commercial product C14-C22 alcohol/Ci2-C2o alkylglucoside - Montanov L®.

The fatty alcohol/alkylpolyglycoside mixture is preferably present in emulsions in accordance with the invention in concentrations ranging from 0.5% to 15% by weight and more preferentially from 1 to 10% by weight relative to the total weight of the composition.

NONIONIC ASSOCIATIVE POLYURETHANE POLYETHER

The non-ionic polyether polyurethanes according to the invention generally comprise, in their chain, both hydrophilic blocks, usually of polyoxyethylene nature, and hydrophobic blocks that may be aliphatic sequences alone and/or cycloaliphatic and/or aromatic sequences.

Preferably, these polyether polyurethanes comprise at least two lipophilic hydrocarbon chains containing from 6 to 30 carbon atoms, separated by a hydrophilic block, the hydrocarbon chains possibly being pendent chains or chains at the end of the hydrophilic block. In particular, it is possible for one or more pendent chains to be provided. In addition, the polymer may comprise a hydrocarbon-based chain at one end or at both ends of a hydrophilic block. The polyurethane polyethers can be multiblock, in particular in triblock form. The hydrophobic blocks can be at each end of the chain (for example: triblock copolymer having a hydrophilic central block) or distributed both at the ends and in the chain (for example, multiblock copolymer). These same polymers can also be graft polymers or star polymers.

The nonionic fatty-chain polyurethane polyethers can be triblock copolymers, whose hydrophilic block is a polyoxyethylene chain comprising from 50 to 1000 oxyethylene groups.

The non-ionic polyether polyurethanes comprise a urethane linkage between the hydrophilic blocks, whence arises the name. By extension, also included among the non-ionic polyether polyurethanes comprising a hydrophobic chain are those in which the hydrophilic blocks are linked to the hydrophobic blocks via other chemical bonds.

As examples of non-ionic polyether polyurethanes comprising a hydrophobic chain that may be used in the invention, it is also possible to use Rheolate 205® containing a urea functional group, sold by the company Rheox, or Rheolate® 208, 204 or 212, and also Acrysol RM 184®.

Mention may also be made of the product Elfacos T210® containing a C12-C14 alkyl chain, and the product Elfacos T212® containing a C18 alkyl chain, from Akzo.

The product DW 1206B® from Rohm & Haas containing a C20 alkyl chain and a urethane linkage, sold at a solids content of 20% in water, may also be used.

Use may also be made of solutions or dispersions of these polymers, in particular in water or in an aqueous alcohol medium. Examples of such polymers that may be mentioned are Rheolate® 255, Rheolate® 278 and Rheolate® 244 sold by the company Rheox. Use may also be made of the products DW 1206F and DW 1206J sold by the company Rohm & Haas.

The polyurethane polyethers that may be used according to the invention may also be chosen from those described in the article by G. Fonnum, J. Bakke and Fk. Hansen - Colloid Polym. Sci., 271 , 380-389 (1993).

According to a specific form of the invention, use will be made of a polyether polyurethane that may be obtained by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol comprising from 150 to 180 mol of ethylene oxide, (ii) stearyl alcohol or decyl alcohol, and (iii) at least one diisocyanate.

Such polyether polyurethanes are sold in particular by the company Rohm & Haas under the names Aculyn 46® and Aculyn 44®. Aculyn 46® having the INCI name: PEG-150/Stearyl Alcohol/SMDI Copolymer, is a polycondensate of polyethylene glycol comprising 150 or 180 mol of ethylene oxide, of stearyl alcohol and of methylenebis(4-cyclohexyl isocyanate) (SMDI) at 15% by weight in a matrix of maltodextrin (4%) and water (81 %) .

Aculyn 44® (PEG-150/Decyl Alcohol/SMDI Copolymer) is a polycondensate of polyethylene glycol comprising 150 or 180 mol of ethylene oxide, of decyl alcohol and of methylenebis(4-cyclohexyl isocyanate) (SMDI) at 35% by weight in a mixture of propylene glycol (39%) and water (26%).

According to a particularly preferred form of the invention, use will be made of a polyether polyurethane that may be obtained by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol comprising from 150 to 180 mol of ethylene oxide, (ii) a polyoxyethylenated stearyl alcohol comprising 100 mol of ethylene oxide, and (iii) a diisocyanate.

Such polyether polyurethanes are sold especially by the company Sasol Servo BV under the name SER-AD FX 1 100®, which is a polycondensate of polyethylene glycol containing 136 mol of ethylene oxide, of stearyl alcohol polyoxyethylenated with 100 mol of ethylene oxide and of hexamethylene diisocyanate (HDI) with a weight-average molecular weight of 30 000 (INCI name: PEG-136/Steareth- 1001/SMDI Copolymer).

The amount of associative polyether polyurethane as active substance may range, for example, from 0.1 to 10% by weight, preferably from 0.25 to 8% by weight and better still from 1 .5 to 5% by weight relative to the total weight of the composition.

DEODORANT ACTIVE AGENTS Among the deodorant active agents that can be used according to the invention, mention may be made of antiperspirant active agents.

The term "antiperspirant active agent" is intended to mean an active agent which, by itself, has the effect of reducing the flow of sweat, of reducing the sensation on the skin of moisture associated with human sweat and of masking human sweat.

Among the antiperspirant active agents, mention may be made of salts or complexes of aluminum and/or of zirconium, preferably chosen from aluminum halohydrates; aluminum zirconium halohydrates, complexes of zirconium hydroxychloride and of aluminum hydroxychloride with or without an amino acid, such as those described in patent US-3 792 068.

Among the aluminum salts, mention may in particular be made of aluminum chlorohydrate in activated or unactivated form, aluminum chlorohydrex, the aluminum chlorohydrex-polyethylene glycol complex, the aluminum chlorohydrex- propylene glycol complex, aluminum dichlorohydrate, the aluminum dicnlorohydrex-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.

Among the aluminum zirconium salts, mention may be made in particular of aluminum zirconium octachlorohydrate, aluminum zirconium pentachlorohydrate, aluminum zirconium tetrachlorohydrate and aluminum zirconium trichlorohydrate. The complexes of zirconium hydroxychloride and of aluminum hydroxychloride with an amino acid are generally known as ZAG (when the amino acid is glycine). Among these products, mention may be made of the aluminum zirconium octachlorohydrex-glycine complexes, the aluminum zirconium pentachlorohydrex- glycine complexes, the aluminum zirconium tetrachlorohydrex-glycine complexes and the aluminum zirconium trichlorohydrex-glycine complexes.

Aluminum sesquichlorohydrate is in particular sold under the trade name Reach 301® by the company Summitreheis.

Among the aluminum and zirconium complexes, mention may be made of the complexes of zirconium hydroxychloride and of aluminum hydroxychloride with an amino acid such as glycine, having the INCI name: Aluminum Zirconium Tetrachlorohydrex Gly, for example the product sold under the name Reach AZP- 908-SUF® by the company Summitreheis.

Use will more particularly be made of the aluminum chlorohydrate sold under the trade names Locron S FLA®, Locron P and Locron L.ZA by the company Clariant; under the trade names Microdry Aluminum Chlorohydrate®, Micro-Dry 323®, Chlorhydrol 50, Reach 103 and Reach 501 by the company Summitreheis; under the trade name Westchlor 200® by the company Westwood; under the trade name Aloxicoll PF 40® by the company Guilini Chemie; Cluron 50%® by the company Industria Quimica Del Centra; or Clorohidroxido Aluminio SO A 50%® by the company Finquimica.

As other active agent that can reduce the sensation of moisture on the skin related to human sweat, mention may be made of expanded perlite particles such as those obtained by the expansion process described in patent US 5,002,698.

The perlites which can be used according to the invention are generally aluminosilicates of volcanic origin and have the composition:

70.0-75.0% by weight of silica SiO₂

12.0-15.0% by weight of aluminum oxide AI2O3

3.0-5.0% of sodium oxide Na2O

3.0-5.0% of potassium oxide K₂O

0.5-2% of iron oxide Fe₂O₃ ->

0.2-0.7% of magnesium oxide MgO

0.5-1 .5% of calcium oxide CaO

0.05-0.15% of titanium oxide TiO₂.

Preferably, the perlite particles used will be ground; in this case, they are known as Expanded Milled Perlite (EMP). They preferably have a particle size defined by a median diameter D50 ranging from 0.5 to 50 μιτι and preferably from 0.5 to 40 μιτι. Preferably, the perlite particles used have a loose bulk density at 25°C ranging from 10 to 400 kg/m³ (standard DIN 53468) and preferably from 10 to 300 kg/m³. Preferably, the expanded perlite particles according to the invention have a water absorption capacity, measured at the wet point, ranging from 200% to 1500% and preferably from 250 to 800%.

The wet point corresponds to the amount of water which has to be added to 1 g of particle in order to obtain a homogeneous paste. This method derives directly from the oil uptake method applied to solvents. The measurements are taken in the same manner by means of the wet point and the flow point, which have, respectively, the following definitions: wet point: mass expressed in grams per 100 g of product corresponding to the production of a homogeneous paste during the addition of a solvent to a powder; flow point: mass expressed in grams per 100 g of product above which the amount of solvent is greater than the capacity of the powder to retain it. This is reflected by the production of a more or less homogeneous mixture which flows over the glass plate.

The wet point and the flow point are measured according to the following protocol: Protocol for measuring the water absorption

1 ) Equipment used

Glass plate (25 x 25 mm)

Spatula (wooden shaft and metal part, 15 x 2.7 mm)

Silk-bristled brush

Balance

2) Procedure

The glass plate is placed on the balance and 1 g of perlite particles is weighed out. The beaker containing the solvent and the liquid sampling pipette is placed on the balance. The solvent is gradually added to the powder, the whole being regularly blended (every 3 to 4 drops) with the spatula.

The weight of solvent needed to obtain the wet point is noted. Further solvent is added and the weight which makes it possible to reach the flow point is noted. The average of 3 tests will be determined.

The expanded perlite particles sold under the trade names Optimat 1430 OR or Optimat 2550 by the company World Minerals will be used in particular. Mention may also be made of talcs or magnesium silicates such as that sold under the name Luzenac 15 M00® by the company Luzenac. b) Bacteriostatic agents or bactericidal agents The deodorant active agents may be bacteriostatic agents or bactericides that act on underarm odor microorganisms, such as 2,4,4'-trichloro-2'-hydroxydiphenyl ether (©Triclosan), 2,4-dichloro-2'-hydroxydiphenyl ether, 3',4',5'- trichlorosalicylanilide, 1 -(3',4'-dichlorophenyl)-3-(4'-chlorophenyl)urea (©Triclocarban) or 3,7,1 1 -trimethyldodeca-2, 5,10-trienol (©Farnesol); quaternary ammonium salts such as cetyltrimethylammonium salts, cetylpyridinium salts, DPTA (1 ,3-diaminopropanetetraacetic acid), 1 ,2-decanediol (Symclariol from the company Symrise); glycerol derivatives, for instance caprylic/capric glycerides (Capmul MCM® from Abitec), glyceryl caprylate or caprate (Dermosoft GMCY® and Dermosoft GMC®, respectively from Straetmans), polyglyceryl-2 caprate (Dermosoft DGMC® from Straetmans), and biguanide derivatives, for instance polyhexamethylene biguanide salts; chlorhexidine and salts thereof; 4-phenyl-4,4- dimethyl-2-butanol (Symdeo MPP® from Symrise); zinc salts such as zinc salicylate, zinc gluconate, zinc pidolate, zinc sulfate, zinc chloride, zinc lactate or zinc phenolsulfonate; salicylic acid and derivatives thereof such as 5-n- octanoylsalicylic acid.

C) Odor absorbers The deodorant active agents may be odor absorbers such as zinc ricinoleates or sodium bicarbonate; metallic or silver or silver-free zeolites, or cyclodextrins and derivatives thereof. They may also be chelating agents such as Dissolvine GL-47- S® from Akzo Nobel, EDTA and DPTA. They may also be a polyol such as glycerol or 1 ,3-propanediol (Zemea Propanediol sold by Dupont Tate and Lyle Bioproducts). d) Enzymatic inhibitors

The deodorant active agents may also be enzyme inhibitors such as triethyl citrate; or alum.

In the event of incompatibility or to stabilize them, for example, some of the active agents mentioned above may be incorporated into spherules, especially ionic or nonionic vesicles and/or nanoparticles (nanocapsules and/or nanospheres).

The deodorant active agents may be present in the composition according to the invention in a proportion of from 0.001 to 40% by weight relative to the total weight of the composition, and preferably in a proportion of from 0.1 to 25% by weight. OIL PHASE

The compositions according to the invention contain at least one water-immiscible organic liquid phase, known as an oil phase. This phase generally comprises one or more hydrophobic compounds that make said phase water-immiscible. Said phase is liquid at ambient temperature (20-25°C).

Preferentially, the oil phase is present in concentrations ranging from 1 to 60% by weight and more preferentially from 4 to 40% by weight relative to the total weight of the composition. The oil phase of the emulsions in accordance with the invention comprises at least one volatile hydrocarbon-based oil.

The volatile hydrocarbon-based oil is chosen in particular from hydrocarbon- based oils containing from 8 to 16 carbon atoms, and especially Cs-Ci6 isoalkanes (also known as isoparaffins), for instance isododecane (also known as 2,2,4,4,6- pentamethylheptane), isodecane and isohexadecane, for example the oils sold under the trade names Isopar or Permethyl, branched Cs-Ci6 esters and isohexyl neopentanoate, and mixtures thereof. Use may also be made of other volatile hydrocarbon-based oils, such as petroleum distillates, in particular those sold under the name Shell Solt by the company Shell; and volatile linear alkanes, such as those described in patent application DE10 2008 012 457 by the company Cognis.

Preferentially, the volatile hydrocarbon-based oil is chosen from Cs-Ci6 isoalkanes and particularly, from isododecane, isodecane, isohexadecane and mixtures thereof and even more particularly isododecane. Preferentially, the volatile hydrocarbon-based oil(s) are present in concentrations ranging from 0.1 to 100% by weight and more preferentially from 1 to 80% by weight relative to the total weight of the oil phase.

Preferentially, the volatile hydrocarbon-based oil(s) are present in concentrations ranging from 0.1 to 30% and more preferentially from 0.5 to 15% relative to the total weight of the composition.

According to one particular form of the invention, the oil phase of the emulsions in accordance with the invention comprises at least one additional oil.

The additional oil may be chosen from mineral, vegetable, synthetic oils; particularly non-volatile hydrocarbon-based oils and/or non-volatile or volatile silicones, volatile or non-volatile fluorinated oils and mixtures thereof.

Preferentially, the additional oil(s) are present in concentrations ranging from 0.1 to 99% by weight and more preferentially from 0.1 to 90% by weight relative to the total weight of the oil phase.

The term "non-volatile oil" is intended to mean an oil that remains on the skin or the keratin fiber at ambient temperature and atmospheric pressure for at least several hours, and that especially has a vapor pressure of less than 10^"3 mmHg (0.13 Pa).

The volatile silicones may be chosen from volatile linear or cyclic silicone oils, in particular those with a viscosity of≤ 8 centistokes

(8 x 10^"6 m²/s), and containing in particular from 2 to 7 silicon atoms, these silicones optionally comprising alkyl or alkoxy groups containing from 1 to 10 carbon atoms. As volatile silicone oils that may be used in the invention, mention may be made especially of octamethylcyclotetrasiloxane, decamethyl- cyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyl- trisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyl- trisiloxane, decamethyltetrasiloxane and dodecamethylpentasiloxane and mixtures thereof.

Mention may also be made of volatile linear alkyltrisiloxane oils of general formula

where R represents an alkyl group comprising from 2 to 4 carbon atoms, one or more hydrogen atoms of which may be replaced with a fluorine or chlorine atom. Among the oils of general formula (I), mention may be made of:

3-butyl-1 ,1 ,1 ,3,5,5,5-heptamethyltrisiloxane,

3-propyl-1 ,1 ,1 ,3,5,5,5-heptamethyltrisiloxane, and

3-ethyl-1 ,1 ,1 ,3,5,5,5-heptamethyltrisiloxane,

corresponding to the oils of formula (I) for which R is, respectively, a butyl group, a propyl group or an ethyl group.

As examples of non-volatile oils that may be used in the invention, mention may be made of:

hydrocarbon-based oils of plant origin, such as liquid triglycerides of fatty acids containing from 4 to 24 carbon atoms, for instance caprylic/capric acid triglycerides such as those sold by the company Stearineries Dubois or those sold under the names Miglyol 810, 812 and 818 by the company Dynamit Nobel;

linear or branched hydrocarbons of mineral or synthetic origin, such as liquid paraffins and derivatives thereof, petroleum jelly, polydecenes, polybutenes, hydrogenated polyisobutene, such as Parleam, or squalane;

synthetic ethers having from 10 to 40 carbon atoms, such as propylene glycols and their derivatives such as PPG14 butyl ether;

synthetic esters, especially of fatty acids, isononyl isononanoate, isopropyl myristate, isopropyl palmitate, C12-C15 alcohol benzoates, hexyl laurate, diisopropyl adipate, 2-ethylhexyl palmitate, 2-octyldodecyl stearate, 2-octyldodecyl erucate, isostearyl isostearate;

- fatty alcohols that are liquid at ambient temperature, containing a branched and/or unsaturated carbon-based chain containing from 12 to 26 carbon atoms, for instance octyldodecanol, isostearyl alcohol, 2-butyloctanol, 2-hexyldecanol, 2- undecylpentadecanol or oleyl alcohol;

- higher fatty acids such as oleic acid, linoleic acid or linolenic acid;

- carbonates;

- acetates;

- citrates;

- fluoro oils that are optionally partially hydrocarbon-based and/or silicone-based, for instance fluorosilicone oils, fluoropolyethers and fluorosilicones as described in the document EP-A-847 752;

- silicone oils, for instance non-volatile polydimethylsiloxanes (PDMSs); phenyl silicones, for instance phenyl trimethicones, phenyl dimethicones, phenyl- trimethylsiloxydiphenylsiloxanes, diphenyl dimethicones, diphenylmethyl- diphenyltrisiloxanes, 2-phenylethyl trimethylsiloxysilicat.es, and

- mixtures thereof. Preferentially, at least one non-volatile silicone oil will be used, and more preferentially, a polydimethylsiloxane (INCI name: Dimethicone).

Preferentially, the non-volatile silicone oil(s) or the additionals are present in concentrations ranging from 0.1 to 99% by weight and more preferentially from 0.1 to 90% by weight relative to the total weight of the oil phase.

AQUEOUS PHASE

Preferentially, the aqueous phase is present in concentrations ranging from 1 to 95% by weight and more preferentially from 50 to 80% by weight relative to the total weight of the composition.

The aqueous phase of said compositions contains water and may contain other water-soluble or water-miscible solvents. The water-soluble or water-miscible solvents comprise short chain, for example Ci-C₄, monoalcohols, such as ethanol or isopropanol; diols or polyols, for instance ethylene glycol, 1 ,2-propylene glycol, 1 ,3-butylene glycol, hexylene glycol, diethylene glycol, dipropylene glycol, 2- ethoxyethanol, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether and sorbitol. Propylene glycol and glycerol, propane-1 ,3-diol, will be used more particularly.

According to one particular form of the invention, the emulsion comprises:

a) at least one continuous aqueous phase; and

b) at least one oil phase dispersed in said aqueous phase and comprising at least one Cs-Ci6 isoalkane; and

c) at least one C14-C22 alcohol/Ci2-C2o alkylglucoside mixture; and

d) at least one polycondensate of polyethylene glycol containing 136 mol of ethylene oxide, of stearyl alcohol polyoxyethylenated with 100 mol of ethylene oxide and of hexamethylene diisocyanate (HDI) with a weight-average molecular weight of 30 000 (INCI name: PEG-136/Steareth-100I/SMDI Copolymer) and e) at least one aluminum and/or zirconium salt or complex, particularly aluminum chlorohydrate.

ADDITIVES

The cosmetic compositions according to the invention may also comprise cosmetic adjuvants chosen from emollients, antioxidants, opacifiers, stabilizers, moisturizers, vitamins, bactericides, preserving agents, polymers, fragrances, a structuring agent for a fatty phase, in particular chosen from waxes, pasty compounds, mineral or organic lipophilic gelling agents; organic or mineral fillers; thickeners or suspending agents, or any other ingredient normally used in cosmetics for this type of application.

Needless to say, a person skilled in the art will take care to select this or these optional additional compounds such that the advantageous properties intrinsically associated with the cosmetic composition in accordance with the invention are not, or are not substantially, adversely affected by the envisaged addition(s).

Wax(es)

The wax is in general a lipophilic compound that is solid at room temperature (25°C), with a reversible solid/liquid change in state, having a melting point of greater than or equal to 30°C, which may be up to 200°C and in particular up to 120°C.

In particular, the waxes that are suitable for the invention may have a melting point of greater than or equal to 45°C and in particular of greater than or equal to 55°C. Within the context of the invention, the melting point corresponds to the temperature of the most endothermic peak observed in thermal analysis (DSC) as described in the standard ISO 1 1357-3; 1999. The melting point of the wax may be measured using a differential scanning calorimeter (DSC), for example the calorimeter sold under the name MDSC 2920 by the company TA Instruments.

The measuring protocol is as follows:

A sample of 5 mg of wax placed in a crucible is subjected to a first temperature rise ranging from -20°C to 100°C, at a heating rate of 10°C/minute, it is then cooled from 100°C to -20°C at a cooling rate of 10°C/minute and it is finally subjected to a second temperature rise ranging from -20°C to 100°C at a heating rate of 5°C/minute. During the second temperature rise, the variation in the difference in power absorbed by the empty crucible and by the crucible containing the sample of wax is measured as a function of the temperature. The melting point of the compound is the temperature value corresponding to the top of the peak of the curve representing the variation in the difference in power absorbed as a function of the temperature.

The waxes that may be used in the compositions according to the invention are chosen from waxes that are solid at room temperature of animal, plant, mineral or synthetic origin, and mixtures thereof.

As illustrations of waxes that are suitable for the invention, mention may be made in particular of hydrocarbon waxes, for instance beeswax, lanolin wax, Chinese insect waxes, rice bran wax, carnauba wax, candelilla wax, ouricury wax, esparto wax, berry wax, shellac wax, Japan wax and sumac wax; montan wax, orange wax and lemon wax, refined sunflower wax sold under the name Sunflower Wax by Koster Keunen, microcrystalline waxes, paraffins and ozokerite; polyethylene waxes, the waxes obtained by the Fischer-Tropsch synthesis and waxy copolymers, and also esters thereof.

Mention may also be made of waxes obtained by catalytic hydrogenation of animal or plant oils containing linear or branched C8-C32 fatty chains. Mention may in particular be made, among these waxes, of isomerized jojoba oil, such as the trans-isomerized partially hydrogenated jojoba oil manufactured or sold by the company Desert Whale under the commercial reference lso-Jojoba-50®, hydrogenated sunflower oil, hydrogenated castor oil, hydrogenated coconut oil, hydrogenated lanolin oil and bis(1 ,1 ,1 -trimethylolpropane) tetrastearate, sold under the name Hest 2T-4S® by the company Heterene.

Mention may also be made of silicone waxes (C3o_-45 alkyl dimethicone) and fluorinated waxes.

Use may also be made of the waxes obtained by hydrogenation of castor oil esterified with cetyl alcohol, sold under the names Phytowax ricin 16L64® and 22L73® by the company Sophim. Such waxes are described in Application FR-A- 2 792 190.

As wax, use may be made of a C2o-C₄o alkyl (hydroxystearyloxy)stearate

(the alkyl group comprising from 20 to 40 carbon atoms), alone or as a mixture.

Such a wax is sold in particular under the names Kester Wax K 82 P®, Hydroxypolyester K 82 P® and Kester Wax K 80 P® by the company Koster Keunen.

As microwaxes that may be used in the compositions according to the invention, mention may be made especially of carnauba microwaxes, such as the product sold under the name MicroCare 350® by the company Micro Powders, synthetic microwaxes, such as the product sold under the name MicroEase 1 14S® by the company Micro Powders, microwaxes consisting of a mixture of carnauba wax and polyethylene wax, such as the products sold under the names Micro Care 300® and 310® by the company Micro Powders, microwaxes consisting of a mixture of carnauba wax and of synthetic wax, such as the product sold under the name Micro Care 325® by the company Micro Powders, polyethylene microwaxes, such as the products sold under the names Micropoly 200®, 220®, 220L® and 250S® by the company Micro Powders, the commercial products Performalene 400 Polyethylene® and Performalene 500-L Polyethylene® from New Phase Technologies, Performalene 655 Polyethylene® or paraffin waxes, for instance the wax having the INCI name Microcrystalline Wax and Synthetic Wax and sold under the trade name Microlease by the company Sochibo; polytetrafluoroethylene microwaxes, such as those sold under the names Microslip 519® and 519 L® by the company Micro Powders.

Pasty compounds

For the purposes of the present invention, the term "pasty compound" is intended to mean a lipophilic fatty compound which exhibits a reversible solid/liquid change of state, which exhibits, in the solid state, an anisotropic crystal arrangement and which comprises, at the temperature of 23°C, a liquid fraction and a solid fraction.

The pasty compound is preferably chosen from synthetic compounds and compounds of plant origin. A pasty compound can be obtained by synthesis from starting products of plant origin. The pasty compound may be advantageously chosen from: - lanolin and derivatives thereof,

- polymeric or non-polymeric silicone compounds,

- polymeric or non-polymeric fluorinated compounds,

- vinyl polymers, in particular:

- olefin homopolymers,

- olefin copolymers,

- hydrogenated diene homopolymers and copolymers,

- linear or branched oligomers, homopolymers or copolymers of alkyl (meth)acrylates preferably containing a C8-C30 alkyl group,

- homo- and copolymeric oligomers of vinyl esters containing C8-C30 alkyl groups, and

- homopolymer and copolymer oligomers of vinyl ethers containing C8-C30 alkyl groups,

- liposoluble polyethers resulting from polyetherification between one or more C2- C100 and preferably C2-C50 diols,

- esters,

- mixtures thereof.

Inorganic lipophilic gelling agents

Mineral lipophilic gelling agents that may be mentioned include optionally modified clays, for instance hectorites modified with a C10-C22 ammonium chloride, for instance hectorite modified with distearyldimethylammonium chloride, for instance the product sold under the name Bentone 38V® by the company Elementis.

Mention may also be made of fumed silica optionally hydrophobically treated at the surface, the size of the particles of which is less than 1 μιτι. This is because it is possible to chemically modify the surface of the silica, by chemical reaction generating a reduction in the number of silanol groups present at the surface of the silica. It is possible in particular to replace silanol groups with hydrophobic groups: a hydrophobic silica is then obtained. The hydrophobic groups can be trimethylsiloxyl groups, which are obtained in particular by treatment of fumed silica in the presence of hexamethyldisilazane. Silicas thus treated are named "silica silylate" according to the CTFA (8th edition, 2000). They are sold, for example, under the references Aerosil R812® by the company Degussa, Cab-O- Sil TS-530® by the company Cabot, dimethylsilyloxyl or polydimethylsiloxane groups, which are obtained especially by treating fumed silica in the presence of polydimethylsiloxane or dimethyldichlorosilane. Silicas thus treated are known as "silica dimethyl silylate" according to the CTFA (8th edition, 2000). They are sold, for example, under the references Aerosil R972® and Aerosil R974® by the company Degussa, and Cab-O-Sil TS-610® and Cab-O-Sil TS-720® by the company Cabot.

The hydrophobic fumed silica in particular has a particle size that may be nanometric to micrometric, for example ranging from about 5 to 200 nm.

Organic lipophilic gelling agents

The polymeric organic lipophilic gelling agents are, for example, partially or totally crosslinked elastomeric organopolysiloxanes of three-dimensional structure, for instance those sold under the names KSG6®, KSG16® and KSG18® from Shin- Etsu, Trefil E-505C® or Trefil E-506C® from Dow Corning, Gransil SR-CYC®, SR DMF10®, SR-DC556®, SR 5CYC gel®, SR DMF 10 gel® and SR DC 556 gel® from Grant Industries and SF 1204® and JK 1 13® from General Electric; ethylcellulose, for instance the product sold under the name Ethocel® by Dow Chemical; galactomannans comprising from one to six and in particular from two to four hydroxyl groups per saccharide, substituted with a saturated or unsaturated alkyl chain, for instance guar gum alkylated with Ci to C6, and in particular Ci to C3, alkyl chains, and mixtures thereof. Block copolymers of "diblock", "triblock" or "radial" type, of the polystyrene/polyisoprene or polystyrene/polybutadiene type, such as the products sold under the name Luvitol HSB® by the company BASF, of the polystyrene/copoly(ethylene-propylene) type, such as the products sold under the name Kraton® by the company Shell Chemical Co., or of the polystyrene/copoly(ethylene-butylene) type, and mixtures of triblock and radial (star) copolymers in isododecane, such as those sold by the company Penreco under the name Versagel®, for instance the mixture of butylene/ethylene/styrene triblock copolymer and of ethylene/propylene/styrene star copolymer in isododecane (Versagel M 5960). Mention may also be made, among the lipophilic gelling agents which can be used in the compositions according to the invention, of esters of dextrin and of fatty acid, such as dextrin palmitates, in particular such as those sold under the names Rheopearl TL® or Rheopearl KL® by the company Chiba Flour. It is also possible to use silicone polyamides of the polyorganosiloxane type such as those described in documents US-A-5 874 069, US-A-5 919 441 , US-A-6 051 216 and US-A-5 981 680.

Thickeners and suspending agents

The thickeners can be chosen from carboxyvinyl polymers, such as the Carbopols (Carbomers) and the Pemulens (acrylate/Cio-C3o alkyl acrylate copolymer); polyacrylamides, such as, for example, the crosslinked copolymers sold under the names Sepigel 305 (CTFA name: polyacrylamide/Ci3-i₄ isoparaffin/laureth 7) or Simulgel 600 (CTFA name: acrylamide/sodium acryloyldimethyltaurate copolymer/isohexadecane/polysorbate 80) by the company Seppic; optionally crosslinked and/or neutralized polymers and copolymers of 2-acrylamido-2- methylpropanesulfonic acid, such as the poly(2-acrylamido-2- methylpropanesulfonic acid) sold by the company Hoechst under the trade name Hostacerin AMPS (CTFA name: ammonium polyacryloyldimethyltaurate) or Simulgel 800, sold by the company Seppic (CTFA name: sodium polyacryloyldimethyltaurate/polysorbate 80/sorbitan oleate); copolymers of 2- acrylamido-2-methylpropanesulfonic acid and of hydroxyethyl acrylate, such as Simulgel NS and Sepinov EMT 10, sold by the company Seppic; cellulose derivatives, such as hydroxyethyl cellulose or cetyl hydroxyethylcellulose; polysaccharides and in particular gums, such as xanthan gum or hydroxypropyl guar gums; or silicas, such as, for example, Bentone Gel MIO, sold by the company NL Industries, or Veegum Ultra, sold by the company Polyplastic. The thickeners can also be cationic, such as, for example, Polyquaternium-37, sold under the name Salcare SC95 (Polyquaternium-37 (and) Mineral Oil (and) PPG-1 Trideceth-6) or Salcare SC96 (Polyquaternium-37 (and) Propylene Glycol Dicaprylate/Dicaprate (and) PPG-1 Trideceth-6), or other crosslinked cationic polymers, such as, for example, those having the CTFA name Ethyl Acrylate/Dimethylaminoethyl Methacrylate Cationic Copolymer In Emulsion.

Organic powder According to one particular form of the invention, the compositions according to the invention will additionally comprise an organic powder.

In the present patent application, the term "organic powder" means any solid that is insoluble in the medium at room temperature (25°C).

As organic powders that may be used in the composition of the invention, examples that may be mentioned include polyamide particles and in particular those sold under the Orgasol names by the company Atochem; nylon-6,6 fibers, in particular the polyamide fibers sold by Etablissements P Bonte under the name Polyamide 0.9 Dtex 0.3 mm (INCI name: Nylon 6,6 or Polyamide 6,6) having a mean diameter of 6 μιτι, a weight of approximately 0.9 dtex and a length ranging from 0.3 mm to 1 .5 mm; polyethylene powders; microspheres based on acrylic copolymers, such as those made of ethylene glycol dimethacrylate/lauryl methacrylate copolymer sold by the company Dow Corning under the name of Polytrap; polymethyl methacrylate microspheres, sold under the name Microsphere M-100 by Matsumoto or under the name Covabead LH85 by the company Wackherr; hollow polymethyl methacrylate microspheres (particle size: 6.5-10.5 μιτι) sold under the name Ganzpearl GMP 0800 by Ganz Chemical; methyl methacrylate/ethylene glycol dimethacrylate copolymer microbeads (size: 6.5-10.5 μιτι) sold under the name Ganzpearl GMP 0820 by Ganz Chemical or Microsponge 5640 by the company Amcol Health & Beauty Solutions; ethylene- acrylate copolymer powders, such as those sold under the name Flobeads by the company Sumitomo Seika Chemicals; expanded powders such as hollow microspheres and especially microspheres formed from a terpolymer of vinylidene chloride, acrylonitrile and methacrylate and sold under the name Expancel by the company Kemanord Plast under the references 551 DE 12 (particle size of about 12 μιτι and mass per unit volume of 40 kg/m³), 551 DE 20 (particle size of about 30 μιτι and mass per unit volume of 65 kg/m³), 551 DE 50 (particle size of about 40 μιτι), or the microspheres sold under the name Micropearl F 80 ED by the company Matsumoto; powders of natural organic materials such as starch powders, especially of crosslinked or non-crosslinked corn, wheat or rice starch, such as the powders of starch crosslinked with octenylsuccinic anhydride, sold under the name Dry-Flo by the company National Starch; silicone resin microbeads such as those sold under the name Tospearl by the company Toshiba Silicone, especially Tospearl 240; amino acid powders such as the lauroyllysine powder sold under the name Amihope LL-1 1 by the company Ajinomoto; particles of wax microdispersion, which preferably have mean sizes of less than 1 μιτι and especially ranging from 0.02 μιτι to 1 μιτι, and which are formed essentially from a wax or a mixture of waxes, such as the products sold under the name Aquacer by the company Byk Cera, and especially: Aquacer 520 (mixture of synthetic and natural waxes), Aquacer 514 or 513 (polyethylene wax) or Aquacer 51 1 (polymer wax), or such as the products sold under the name Jonwax 120 by Johnson Polymer (mixture of polyethylene and paraffin waxes) and under the name Ceraflour 961 by the company Byk Cera (micronized modified polyethylene wax); and mixtures thereof.

Suspending agents

In order to improve the homogeneity of the product, use may additionally be made of one or more suspending agents which are preferably chosen from hydrophobic modified montmorillonite clays, such as hydrophobic modified bentonites or hectorites. Mention may be made, for example, of the product Stearalkonium Bentonite (CTFA name) (reaction product of bentonite and of the quaternary ammonium stearalkonium chloride), such as the commercial product sold under the name Tixogel MP 250 by the company Sud Chemie Rheologicals, United Catalysts Inc., or the product Disteardimonium Hectorite (CTFA name) (reaction product of hectorite and of distearyldimonium chloride), sold under the name Bentone 38 or Bentone Gel by the company Elementis Specialities. Other suspending agents can be used, in this case in hydrophilic (aqueous and/or ethanolic) media. They can be derivatives of cellulose, xanthan, guar, starch, locust bean or agar agar.

The amounts of these various constituents that may be present in the cosmetic composition according to the invention are those conventionally used in deodorant compositions.

DELIVERY FORMS

The composition according to the invention may be presented in the form of a cream of varying thickness distributed in a tube or in a grating; in the form of a roll-on (packaged in ball form) and contain for this purpose the ingredients generally used in this type of product and well known to the person skilled in the art. Preferably the composition is presented in the form of a roll-on. The emulsions in accordance with the invention may be prepared according to the standard techniques used for preparing oil-in-water emulsions. They can be obtained according to a process comprising at least the following steps:

1 ) preparation of the oil phase with the volatile hydrocarbon-based oil; the mixture comprising at least one alkylpolyglycoside whose alkyl chain is linear or branched and comprises from 12 to 22 carbon atoms and at least one linear or branched fatty alcohol, having from 12 to 22 carbon atoms and heated to a temperature greater than or equal to 70°C (for example 80°C); and

2) preparation of the aqueous phase with polyether polyurethane and heating to the same temperature as step 1 ); c) addition of the mixture obtained in step 1 ) to the mixture obtained in step 2) with stirring then the entirety is cooled to a temperature less than or equal to 50°C (for example 40°C);

3) addition of the deodorant active agent with stirring, then of the other ingredients present in the composition at room temperature (20-25°C).

The examples which follow illustrate the present invention without limiting the scope thereof. The amounts are expressed as weight percentages relative to the total weight of the composition.

Examples: Roll-ons

Protocol for preparing the emulsions

Dimethicone and the glucoside derivative are added to a beaker and heated to 80°C with stirring. In a second beaker, the water and copolymer are mixed together with stirring to disperse and heated to 80°C. The premix from beaker 1 is added, with strong stirring, then the entirety is cooled to 40°C. The aluminum salts are added with stirring, then the other ingredients, with the perlite last. The fragrance was added around 25°C.

IN VITRO TACKINESS MEASUREMENT TESTS The protocol used allowed standardization of application, drying time and temperature and relative humidity conditions. 10 tests are run per formula every 0.5 seconds up to 15 minutes using a tribometer. Protocol:

The product studied is spread on a specific substrate constituted of a PMMA plate onto which a substrate simulating the appearance of skin (SUPPLALE® substrate - reference PBZ13001 from Idemitsu). Spreading is done using a finger cot on the SUPPLALE substrate in a circle defined by a two-sided crown. The amount of product spread is 3.75 mg/cm².

After uniform spreading of the product, the plate with the film is placed under the texture analyzer - Model TA-XT2 from company Stable Micro Systems - equipped with a cylindrical probe which is 18 mm in diameter, to which an 18 mm disk of Bioskin support (Bioskin plate black K275 from Maprecos SAS) has been attached - and has been covered with a SUPPLALE support.

The texture analyzer is placed in a glovebox so as to work in a temperature- and humidity-controlled atmosphere (temperature of 37°C and relative humidity of 40%).

The probe will "compress" the product with a determined force. The apparatus then calculates the force required for the probe to separate from the sample. In the case of the experiment, only the maximum force expressed in grams, which represents the strength of the tackiness of the formula at this given moment, is retained. This type of measurement is made at different times (every 30 seconds) until a "zero" (^*) force is obtained, which means that the film of the formula studied is dry.

Results:

The tackiness obtained for compositions 1 and 2 is shown in figures 1 and 2. In figure 1 , the plot has drying time over 15 minutes on the x-axis and the force to separate the film from the probe is expressed in grams on the y-axis.

In figure 2, the plot is a histogram showing the maximum force, which represents the intensity of the tackiness of the formula.

It has been observed that composition 1 according to the invention comprising the volatile hydrocarbon-based oil (isododecane) reduces the tackiness of composition 2 without isododecane by 50%.

Claims

1. An oil-in-water emulsion, in particular comprising a physiologically acceptable medium, characterized by the fact that it contains:

a) at least one continuous aqueous phase; and

e) at least one deodorant active agent.

2. The emulsion as claimed in claim 1 , wherein said emulsifier contains (a) from 5 to 60% by weight of alkylpolyglycoside(s);

3. The emulsion as claimed in claim 1 or 2, where the alkylpolyglycoside(s) have the following structure:

4. The emulsion as claimed in claim 3, where the saccharide residue G is chosen from glucose, dextrose, saccharose, fructose, galactose, maltose, maltotriose, lactose, cellobiose, mannose, ribose, dextran, talose, allose, xylose, levoglucan, cellulose and starch, and more particularly glucose.

5. The emulsion as claimed in any one of claims 1 to 4, where the fatty alcohol(s) have from 12 to 18 carbon atoms, and more particularly are chosen alone or in mixtures from lauryl alcohol, cetyl alcohol, myristic alcohol, stearyl alcohol, isostearyl alcohol, palmitic alcohol, oleic alcohol, behenyl alcohol, and arachidyl alcohols.

6. The emulsion as claimed in any one of claims 1 to 5, where the alkylpolyglucoside has an alkyl portion identical to that of the fatty alcohols.

7. The emulsion as claimed in any one of claims 1 to 6, where the fatty alcohol/alkylpolyglucoside mixture is chosen from the following mixtures:

Cetylstearyl alcohol/cocoyl glucoside;

Arachidyl alcohol and behenyl alcohol/arachidyl glucoside;

Myristyl alcohol/myristyl glucoside;

Cetylstearyl alcohol/cetylstearyl glucoside;

CM-C22 alcohols/Ci2-C2o alkylglucoside;

Cocoyl alcohol/cocoyl glucoside;

Isostearyl alcohol/isostearyl glucoside; and more particularly chosen from Cetylstearyl alcohol/cetylstearyl glucoside;

C14-C22/C12-C20 alkylglucoside alcohols and even more particularly the Ci₄- C22/C12-C20 alkylglucoside alcohol mixture.

8. The emulsion as claimed in any one of claims 1 to 7, where the associative nonionic polyether polyurethane includes in its chain both hydrophilic and hydrophobic sequences that may be aliphatic sequences alone and/or cycloaliphatic and/or aromatic sequences.

9. The emulsion as claimed in claim 8, where the associative nonionic polyether polyurethane comprises at least two lipophilic hydrocarbon-based chains containing from 6 to 30 carbon atoms, separated by a hydrophilic block, where the hydrocarbon-based chains may be pendent chains or chains at the end of a hydrophilic block.

10. The emulsion as claimed in claim 9, where the associative nonionic polyether polyurethane is in the form of triblock whose hydrophilic sequence is a polyoxyethylenated chain including from 50 to 1000 oxyethylenated groups.

11. The emulsion as claimed in any one of claims 8 to 10, where the associative nonionic polyether polyurethane may be obtained by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol comprising from 150 to 180 mol of ethylene oxide, (ii) a polyoxyethylenated stearyl alcohol comprising 100 mol of ethylene oxide, and (iii) a diisocyanate.

12. The emulsion as claimed in claim 1 1 , where the associative nonionic polyether polyurethane is a polycondensate of polyethylene glycol containing 136 mol of ethylene oxide, of stearyl alcohol polyoxyethylenated with 100 mol of ethylene oxide and of hexamethylene diisocyanate (HDI) with a weight-average molecular weight of 30 000 (INCI name: PEG-136/Steareth-100I/SMDI Copolymer).

13. The emulsion as claimed in any one of claims 1 to 12, where the deodorant active agent is chosen from antiperspirant active agents, in particular the salts or complexes of aluminum and/or of zirconium, and more particularly still aluminum chlorohydrate.

14. The emulsion as claimed in any one of claims 1 to 13, where the volatile hydrocarbon-based oil(s) are present in concentrations ranging from 0.1 % to 30% by weight and more preferentially from 0.5% to 15% by weight relative to the total weight of the composition.

15. The emulsion as claimed in any one of claims 1 to 14, where the volatile hydrocarbon-based oil is chosen from Cs-Ci6 isoalkanes and particularly, from isododecane, isodecane, isohexadecane and mixtures thereof and even more particularly isododecane.

16. The emulsion as claimed in any one of claims 1 to 15, comprising:

a) at least one continuous aqueous phase; and

b) at least one oil phase dispersed in said aqueous phase and comprising at least one Cs-Ci6 isoalkane; and c) at least one C14-C22 alcohols/Ci2-C2o alkylglucoside mixture; and

17. The emulsion as claimed in any one of claims 1 to 16, comprising at least one additional oil chosen from non-volatile hydrocarbon-based oils and/or volatile or non-volatile silicone oils, volatile or non-volatile fluorinated oils and mixtures thereof, and more particularly chosen from non-volatile silicone oils, and even more particularly from non-volatile polydimethylsiloxanes.

18. The emulsion as claimed in any one of claims 1 to 17, characterized by the fact that it is presented in the form of cream, distributed in a tube or a grating; in the form of roll-on and more particularly in the form of roll-on.

19. A method for the treatment of body odor and optionally of human perspiration, which consists in applying to a keratin material an emulsion as defined in any one of claims 1 to 18.