MXPA00000073A - Anhydrous gel deodorant compositions containing volatile nonpolar solvents - Google Patents

Abstract

Disclosed are anhydrous gel deodorant compositions comprising from about 0.001%to about 50%by weight of deodorant active, fragrance, or combination thereof;from about 0.01%to about 20%by weight of a fatty acid salt gellant;from about 1%to about 50%by weight of a nonpolar volatile solvent having a solubility parameter of less than 8. 0 (cal/cm3)0.5, a vapor pressure of from about 0.01 mm Hg to about 6 mm Hg at 25°C, and a boiling point at 1 atm of less than about 250°C;from about 1%to about 10%by weight of a polar solvent having a solubility parameter of from 12.5 (cal/cm3)0.5 to about 25 (cal/cm3)0.5 and optionally a moderately polar solvent having a solubility parameter of from about 8.0 (cal/cm3)0.5 to less than 12.5 (cal/cm3)0.5. Also disclosed are anhydrous gel deodorant compositions comprising select combinations of metal salts of fatty acid gellants and glycerin. Also disclosed are anhydrous gel deodorant compositions containing improved combinations of deodorant actives, and gel deodorant compositions containing 1,2-hexanediol as a moderately polar solvent. These compositions provide improved performance, product clarity, and/or skin feel characteristics, and are especially effective at providing deodorant application which is milder to the skin and which causes little or no skin irritation.

Description

COMPOSITION DESODORgftNTE gftNHIDRA AND GEL CONTAINING VOLATILE NON-POLAR SOLVENTS FIELD OF THE INVENTION This invention relates to anhydrous, gel deodorant compositions containing a non-polar volatile solvent in combination with a polar solvent, a gelling agent and a fragrance or active deodorant agent. These compositions are softer for the skin and cause less irritation therein and provide good skin perception characteristics during and after application.

BACKGROUND OF THE INVENTION The malodor in the human body is generally considered to be caused in part by the microbial interaction with the secretions of the sweat glands, which produce pungent fatty acids. In addition to cleaning, one way to control these odors is through the topical application of deodorant or antiperspirant compositions in the underarm portion. The deodorant compositions in gel form are especially popular as a means to avoid or mask the malodor arising from perspiration. These gel deodorizing compositions are typically P965 in the form of a solid or solid soft bar and, like other deodorant and antiperspirant products, is also applied topically to the armpit area or to other areas of the skin. However, gel deodorants typically glide more easily on the skin than many other antiperspirant or deodorant products, and leave very little residue after application, if it becomes visible. Gel deodorants typically contain a gelling agent, a polar solvent to solubilize the gellant and a deodorant active ingredient that serves as an antimicrobial active agent, perfume or as another odor-masking material. The gelling agents commonly used in these systems include salts of fatty acids, examples of which include sodium or potassium salts of the C 12 -C 22 fatty acids. The polar solvents commonly used in combination with the fatty acid salts to form the gel structure of the composition, including monohydric or dihydric alcohols, especially ethanol and glycols such as propylene glycol, dipropylene glycol and other high molecular weight polypropylene glycols. Many of these gel deodorants do not have a mild effect on the skin and can cause excessive irritation. Therefore, an object of this invention is to provide an anhydrous gel deodorant composition that P965 acts more smoothly on the skin and causes less irritation, and also provides good skin perception characteristics during and after topical application. Still another object of the present invention is to provide a composition, wherein the composition comprises a volatile and non-polar solvent in combination with polar solvent, and further provides this composition optionally comprising a polar modulated solvent.

SP * MARI? OF THE INVENTION The present invention is directed to anhydrous gel deodorant compositions comprising approximately 0. 001% to about 50% by weight of a deodorant active agent, a fragrance or a combination thereof, from about 0.01% to about 20% by weight of a metal salt of a fatty acid gellant, from about 1% to about 50% by weight of a non-polar volatile solvent having a solubility parameter of less than 8.0 (cal / cm 3) 0.5, a vapor pressure of about 0.01 mm Hg at about 6 mm Hg at 25 ° C and a point boiling average of less than about 250 ° C, and from about 1% to about 10% by weight of a polar solvent having a solubility parameter of between 12.5 and about (cal / cm) A preferred embodiment of the composition P965 gel anhydrous deodorant of the present invention comprises glycerin as a polar solvent, wherein the weight ratio of glycerin to fatty acid salts ranges from about 0.5: 1 to about 3: 1. Other preferred embodiments comprise solvents of 1, 2-hexanediol which provide an improved smoother effect and / or better product clarity. Also preferred are those compositions which contain a combination of triclosan and deodorant active agents of triclocarban, for better effective deodorant. It has been found that these anhydrous gel deodorant compositions provide better performance and better skin perception characteristics and especially are more effective in providing deodorant application which has a smoother effect on the skin and which causes less irritation.

PETAL DESCRIPTION The anhydrous deodorant compositions of this invention are comprised of essential ingredients such as: a gelling agent, a non-polar volatile solvent, a polar solvent and a perfume or deodorant active agent. Anhydrous gel deodorant compositions are intended for topical application in the armpit area or in any other suitable area of the skin. Preferably the compositions are in the form of solid bars or soft solid bars, but may also be formulated in a variety of formulations that are not in the form of a stick and are suitable for application to the armpit area or to other areas of the skin. The term "anhydrous" as used herein refers to the gel deodorant composition of the present invention and means that the composition is essentially free of water, preferably has less than about 5% by weight of free or added water in the deodorant in gel, more preferably less than about 1%, and most preferably zero percent. The term "environmental conditions" which is used herein refers to the surrounding conditions under about one atmosphere of pressure, at about 50% relative humidity and about 25 ° C. The term "essentially free of aromatic hydrocarbons" as used herein refers to the fact that the gel deodorant compositions of the invention contain less than about 10% by weight of aromatic hydrocarbons selected from the group of -pinene, β-pinene d-li -onene and other terpenes, and preferably less than about 5% by weight thereof. The anhydrous deodorant composition of this invention may comprise, consist or consist essentially of essential elements and limitations as described herein, as well as of any other, additional or optional ingredient as well as components or limitations described herein. All percentages, parts and proportions are given by weight of the total composition unless otherwise specified. All weights that belong to the ingredients listed are based on the active level and, therefore, do not include the solvents or by-products that could be included in commercially available materials, unless otherwise specified.

Active deodorant ingredient? Fragrance The anhydrous gel deodorant compositions of this invention comprise an active deodorant ingredient, a fragrance or a combination thereof, including deo-fragrances, at concentrations ranging from about 0.001% to about 50%, preferably from about 0.01% to about 20% by weight, more preferably from about 0.1% to about 10% by weight of the composition. The active deodorant ingredients and perfumes include any known or effective and safe fragrance or deodorant which is suitable for topical application to human skin. Unless otherwise specified, the term "active" as used herein generally refers to fragrances or active deodorants, while the term "active deodorant agent" specifically refers to topical materials that can be avoided or eliminated. the bad smell resulting from perspiration. The term "fragrance" as used herein refers to any topical material that covers or masks odors that result from perspiration or that well provide the desired fragrance aroma composition.

A) Active deodorizing agents Active deodorant agents suitable for use in anhydrous gel deodorant compositions include any topical material that is known or effective in preventing or eliminating the malodor associated with perspiration. These active deodorants are typically antimicrobial agents (e.g., bactericides, fungicides), odor absorbing materials, or combinations thereof. Preferred active deodorants are antimicrobial agents, non-limiting examples thereof include cetyltrimethylammonium bromide, cetyl pyridinium chloride, benzethonium chloride, diisobutyl phenoxy ethyl dimethyl benzyl ammonium chloride, sodium N-lauryl sarcosine, sodium N-palmityl sarcosine, lauroyl sarcosine, n-myristoyl glycine, N-lauryl sarcosine potassium trimethyl ammonium chloride, sodium aluminum chlorohydroxy lactate, triethyl citrate, tricetylmethyl ammonium chloride, 2,4,4'-trichloro-2'-hydroxy diphenyl ether (triclosan), 3,4, 4'-trichlorocarbanilide (triclocarban), diaminoalkyl amides such as L-lysine hexadecyl amide, heavy metal salts of citrate, salicylate and pyroctose, especially zinc salts and acids thereof, heavy metal salts of pyrithione, especially pyrithione zinc, zinc phenolsulfate, farnesol and combinations thereof. The deodorant active ingredients are triclosan, triclocarban and combinations thereof, wherein the preferred concentrations of triclosan or triclocarban vary between about 0.01% and about 1.0%, more preferably between about 0.1% and about 0.5%, still with greater preference between about 0.1% and 0.3% by weight of the composition and wherein the total concentration of triclosan and triclocarban, when used together in a composition, ranges from about 0.01% to about 2.0%, more preferably from about 0.2% to about 1.0%, still more preferably between about 0.2% and about 0.6%, by weight of the composition. It has been found that the combination of these two active deodorant ingredients provide deodorant efficacy that exceeds the cumulative deodorizing efficacy that could be predicted from this combination. The preferred combination of triclosan and triclocarban is effective to provide improved deodorant performance from the deodorant compositions described herein or from any known topical or deodorant composition containing this combination that would otherwise be suitable for application to the human skin. The present invention is therefore directed to a method for controlling associated malodor for human perspiration by the topical application of triclosan / triclocarban combination described above, or any other suitable composition containing the triclosan / triclocarban combination described above , to the area under the arm or some other area of the skin. Of the majority of the deodorant compositions containing this combination, they are applied from about 0.1 grams to about 2.0 grams per armpit, and preferably once or twice a day, more preferably once a day. Other deodorant active agents include odor absorbing materials, such as dicarbonate and carbonate salts, including bicarbonates and alkali metal, ammonium and tetralkylammonium carbonates. The sodium and potassium salts of these odor absorbing materials are preferred. The gel anhydrous deodorant composition is preferably essentially free of astringent antiperspirant agents such as complexes or astringent aluminum or zirconium salts. In this "essentially free" context it is meant that the gel deodorant composition preferably contains less than about 5%, more preferably less than about 2%, still more preferably 0% by weight of these astringent antiperspirant actives.

B) Fragrance Suitable fragrances that are used in the anhydrous gel deodorant composition include any topical material that is known to be effective in masking the malodor associated with perspiration or that well provides the composition with the desired perfumed flavor. These fragrances include any perfume or chemical perfume agent suitable for topical application to the skin. The concentration of the fragrance in the anhydrous gel deodorant composition should be effective in providing the desired aroma characteristics or masking the malodour, where the malodour is inherently associated with the composition itself or is associated with the development of the malodour to the odor. from human perspiration. Also, the fragrance and the accompanying carriers should not impart excessive itching to the skin, especially to irritated or injured skin, at the levels previously described. The fragrances will typically be in the form of water insoluble perfumes that are solubilized in the anhydrous gel deodorant composition. The fragrances are prepared by those skilled in the art in a wide range of fragrances and intensities. Typical fragrances are described in Arctander, Perfume and Flavor Chemicals (Aroma Chemicals), Vol. I and II (1969); and Arctander, Perfume and Flavor Materials of Natural Origin (1960). The Patents of the United States Nos. 4,322,308 and 4,304,679, which are incorporated by reference, set forth fragrance components which generally include, but are not limited to, volatile phenolic substances, for example isoamylsalicylate, benzylsalicylate and thymus oil red; essential oils (such as geranium oil, patchouli oil and petitgrain oil); citrus oils; extracts and resins (for example P965 benzoin siam resinoid and opoponax resinoid); "synthetic" oils, (for example Bergamot 37 and 430, Geranium 76 and Pomeransol 314); aldehydes and ketones (such as B-methyl naphthyl ketone, p-t-butyl-A-methyl hydrocinnamic aldehyde and p-t-amyl cyclohexanone); polycyclic compounds (for example coumarin and β-naphthyl methyl ether); esters (such as diethyl phthalate, phenyl ethyl phenylacetate, non-annelid-1: 4). The fragrances also include esters and essential oils derived from floral and fruit materials, citrus oils, absolute oils, aldehydes, resinoids, musk and other animal aromas (for example natural isolates of algaria, beaver and musk), balsamic oils, etc. . and alcohols (for example, dimethochol, phenylethyl alcohol and tetrahydromuguol). Examples of these useful components in fragrances herein include decyl aldehyde, undecyl aldehyde, undecylenic aldehyde, lauric aldehyde, amyl cinnamic aldehyde, ethyl methyl phenyl glycylate, methyl nonyl acetaldehyde, myristic aldehyde, nonalactone, nonyl aldehyde, octyl aldehyde, undecalactone, hexyl cinnamic aldehyde, benzaldehyde, vanillin, heliotropin, camphor, para-hydroxy phenol butanone, 6-acetyl 1, 1, 3, 4, 4, 6-hexamethyl tetrahydronaphthalene, alpha-methyl ionone, gamma-methyl ionone and amyl-cyclohexanone and mixtures of these components. Other suitable fragrances are those that P965 mask or aid in masking odors associated with perspiration (hereinafter referred to as odor masking fragrances, some non-limiting examples of which are described in U.S. Patent Nos. 5,554,588, 4,278,658, 5,501,805, and in US Pat. European Patent Application No. 684 037 Al, all of which are incorporated herein by reference Preferred odor masking fragrances are those having a deodorant value of at least about 0.25, more preferably from about 0.25 to about 3.5, still more preferably from about 0.9 to about 3.5, which is measured with a Deodorant Value Test which is described in European Patent Application No. 684 037 Al. The fragrances used herein may contain solubilizers, diluents or solvents that They are well known in the art.These materials are described in Arctander, Perfume and Flavor Chemi cals, (Aroma Chemicals), Vol. I and II (1969). These materials typically include dipropylene glycol, diethylene glycol, C.-C6 alcohols and benzyl alcohol.

GELIFICANTS The anhydrous gel deodorant composition of this P965 invention comprises a metal salt of a fatty acid as a gellant suitable to provide the desired application and hardness characteristics for the composition. The gellant concentrations vary between about 0.01% and about 20%, preferably 0.1% and about 10%, more preferably between about 1% and about 8%, even more preferably between about 3% and about 7% by weight of the deodorant composition in gel. Any fatty acid salt gellant may be used in the anhydrous gel deodorant compositions of this invention so long as the selected gellant can be melted or formed into a solution or other homogeneous liquid or liquid dispersions with the selected solvent system described herein, to a processing temperature of between about 50 ° C and about 150 ° C, preferably about 50 ° C and about 120 ° C, more preferably between about 60 ° C and about 100 ° C. The selected gelling agent must also provide the gel deodorizing composition with the desired gel matrix after the formulation and completion of the processing which subsequently provides the desired dispersion and hardness characteristics. Preferred fatty acid salts are those P965 having from about 12 to about 40 carbon atoms, preferably from about 12 to about 22 carbon atoms, more preferably from about 16 to about 20 carbon atoms, still more preferably about 18 carbon atoms. Suitable salt forming cations which are used for the gelling agents include metal salts such as alkali metals, for example sodium and potassium, alkaline earth metals, for example magnesium and aluminum. The preferred salts are those of sodium and potassium, the most preferred being sodium stearate, sodium palmitate, sodium laurate, sodium arachidate, sodium behenate, potassium stearate, potassium palmitate, sodium myristate, aluminum monostearate and combinations thereof. The most preferred is sodium stearate. Non-limiting examples of suitable fatty acids for making the fatty acid gelling agents include acids such as myristic, palmitic, stearic, oleic, behenic, arachidonic, lauric, linoleic, linolenic, margaric acid and combinations thereof. These fatty acids are preferably derived from sources such as coconut oil, beef bait, lanolin, fish oil, beeswax, palm oil, coconut oil, olive oil, cottonseed oil, oil P965 from beans, soybeans, corn oil, rapeseed oil, rosin acids, fats and other natural sources, or are derived by synthetic or semi-synthetic methods well known to those skilled in the art of formulation.

Non-polar volatile solvent. The gel deodorant composition of the present invention comprises a non-polar, volatile solvent having a selected vapor pressure and a select solubility parameter. The concentration of the volatile and non-polar hydrocarbon solvent in the gel deodorant composition varies between about 1% and about 50%, preferably between about 10% and about 40%, more preferably between about 20% and about 40%, and with superlative preference between about 30% and about 40% by weight of the composition. The term "volatile" which is used in this context refers to the volatile and non-polar solvent of the gel deodorant composition of the present invention and in this context refers specifically to non-polar solvents having a vapor pressure measured at 25 °. C of between about 0.01 mmHg to about 6.0 mmHg, preferably of about 0.02 mmHg to about 1.5 mmHg and an average boiling point P965 under a pressure atmosphere (1 atm) of less than about 250 ° C, preferably less than about 235 ° C, under 1 atmosphere of pressure (atm). The term "non-polar" which is used in this context refers to non-polar and volatile solvents of the gel deodorant composition of this invention and in this context specifically refers to volatile solvents having a solubility parameter of less than 8.0 (lime). / cm3) 0.5, preferably from about 5.0 (cal / cm3) 0.5 to less than 8.0 (cal / cm3) 0.5, more preferably 6.0 (cal / cm3) 0.5 to about 7.60 ( cal / cm3) 0.5. The solubility parameters for volatile and non-polar solvents and for other materials described herein are determined by methods well known in the chemical area to establish the relative polar character of a solvent or other material. A description of the solubility parameters and the means to determine them is described by C.D. Vaughan, "Solubility Effets in Product, Package, Penetration and Preservation" 103 Cosmetics and Toiletries 47-69, October 1988; and C.D. Vaughan, "Using Solubility Parameters in Cosmetics Formulation", 36 J. Soc. Cosmetic Chemists 319-333, September / October 1988, the descriptions of which are incorporated herein by reference. Suitable volatile and non-polar solvents P965 for use in gel deodorant compositions are those solvents having the vapor pressure described above and the solubility parameters described above, which may include hydrocarbons, esters, amides and ethers having the required vapor pressure and the solubility parameter required. Preferred are non-polar hydrocarbon solvents which may be of cyclic, branched or chain configuration, more preferably branched chain hydrocarbons. The non-polar volatile solvent is more preferably a branched chain hydrocarbon having the required vapor pressure and solubility parameter and having from about 4 to about 30 carbon atoms, preferably from about 4 to about 20 carbon atoms. carbon, more preferably from about 6 to about 20 carbon atoms. The gel deodorant composition most preferably comprises a combination of two or more of the aforementioned branched chain hydrocarbons, wherein these two or more hydrocarbons have different molecular weights, different number of carbon atoms and / or different chain configurations. Specific non-limiting examples of these more preferred combinations of hydrocarbon solvents include isoparaffins P965 available from Exxon Chemical Company, Baytown, Texas USA, as Isopar M (Isoparaffin C13-C14), Isopar C (Isoparaffin C7-C8), Isoparaffin C8-C9 (Isopar E), Isopar G (Isoparaffin C10-11), Isopar L (C11-C13 Isoparaffin), Isopar H (C11-C12 Isoparaffin). Other non-limiting examples of suitable branched chain hydrocarbons include Permethyl 99A (isododecane), Permethyl 102A (isoeicosane), Permethyl 101A (isohexadecane) and combinations thereof. The Permethyl series are available from Preperse, Inc., South Plainfield, New Jersey, E.U.A. Other non-limiting examples of suitable branched chain hydrocarbons include petroleum distillates such as those available from Phillips Chemical such as Soltrol 130, Soltrol 170 and those available from Shell as Shell Sol 70, -71 and -2033. Non-limiting examples of other volatile and non-polar solvents suitable for use in the anhydrous gel deodorant composition include: butyl adipate, isopropyl adipate, dodecane, octane, decane and combinations thereof. Still other examples include C1: l-C alkanes / cycloalkanes such as those available from Exxon such as Exxsol D80.

Polar Solvent The anhydrous gel deodorant composition of this P965 invention comprises one or more polar solvents having a selectively high solubility diameter. The concentration of the polar solvent in the anhydrous gel deodorant composition will vary with the specific combination of polar solvent, gelling agent and other optional solvents that are present in the composition, but should exceed about 10% by weight of the composition, preferably from about 0.5% to about 10% by weight of the composition, more preferably about 1% by weight of the composition. about 8%, still more preferably from about 3% to about 7% by weight of the gel deodorizing composition, wherein the polar solvent has a solubility parameter of at least 12.5 (cal / cm3) 0.5, of preference of 12.5 (cal / cm3) 0"5 to about 25 (cal / cm3) 0.5, more preferably 12.5 (cal / cm3) 0.5 to about 17.5 (cal / cm3) 0.5. Non-limiting of suitable polar solvents which are used in the anhydrous gel deodorant composition include monohydric alcohols, polyhydric alcohols, and combinations thereof, examples of these include C1 to C20 monohydric alcohols, preferably C2 monohydric alcohols. C8 and polypropylene glycols and polyethylene glycols having from 2 to 7 propoxylate or ethoxylate groups as a repeat and P965 polyglycerols that have 2 to 16 portions of repeating glycerol. Specific examples of suitable polar solvents that are included in the anhydrous gel deodorant include, without limitation, glycerin, propylene glycol, dipropylene glycol, ethanol, water, tripropylene glycol, butylene glycol, propylene glycol methyl ether, dipropylene glycol methyl ether and combinations thereof. The most preferred is glycerin. A preferred embodiment of the gel deodorant composition of the present invention is that which comprises glycerin as the polar solvent and a metal salt of a fatty acid as defined herein, as a gelling agent, wherein the weight ratio of glycerin to the The fatty acid salt is from about 0.5: 1 to about 3: 1, preferably from about 0.8: 1 to about 1.5: 1. It has been found that this reduced ratio of glycerin to fatty acid salt in the gel deodorizing composition allows the formulation to be a sufficiently hard gel bar that can also be formulated or processed using sufficiently low process temperatures to decrease or eliminate thermal degradation. of the thermosensitive materials of the composition. The most preferred combinations are sodium stearate and glycerin.

P965 The anhydrous gel deodorant compositions of this invention are preferably essentially free of propylene glycol, dipropylene glycol or combinations thereof. In this context, the term "essentially free" refers to the compositions preferably containing less than 20%, more preferably less than 10% and still more preferably zero percent by weight of propylene glycol, dipropylene glycol or combinations thereof. same. Other non-limiting examples of polar solvents that may be suitable for use herein are described in U.S. Patent No. 5,429,816; Cosmetics, Science, and Technology, Vol. 1, 27-104, edited by Balsam and Sagarin (1972); U.S. Patent No. 4,202,879; and in U.S. Patent No. 4,816,261, which are incorporated herein by reference.

Moderately Polar Solvent The gel deodorant composition of the present invention may further comprise one or more moderately polar solvents having a selectively modest solubility parameter. This optional solvent is used in the gel deodorant compositions in addition and in combination with the polar solvent that has been P965 described here. The moderately polar solvent helps to reduce the synergism of the gel deodorant composition during transport or prolonged storage, especially when transport or storage is carried out in hot climates or under storage conditions in hot climates. The moderately polar solvent also helps reduce process temperatures that can cause thermal degradation of fragrances and other similar materials in the gel deodorant composition. The moderately polar solvent comprises one or more solvents having a parameter of between about 8.0 (cal / cm3) 0.5 to less than 12.5 (cal / cm3) 0.5, preferably from about 9.0 to less than 12.5 (cal / cm3) 0.5, wherein the concentration of the moderately polar solvent in the gel deodorant composition preferably ranges from about 0.1% to about 40%, more preferably between about 5% and about 30%. The selection of specific concentrations for a moderately polar solvent will vary depending on the other solvents and gelling agents selected in the gel deodorizing composition. Non-limiting examples of moderately polar solvents suitable for use in gel deodorant compositions include ethers P965 fatty alcohol ethoxylates having from about 8 to about 30 carbon atoms, esters of polyhydric alcohols, fatty acid esters, polyethylene glycols having at least 8 ethoxylate groups, polypropylene glycols having at least 8 ethoxylate groups, non-polymeric diols having at least 4 carbon atoms and combinations thereof. Specific non-limiting examples of moderately polar solvents suitable for use in the gel deodorant composition include propylene glycol monoisostearate; myristyl ether PPG-3; PEG-8; hexylene glycol; 1,2-hexanediol; PPG-14 butyl ether, dimethyl isosorbide and combinations thereof. Preferred are hexylene glycol, PPG-3 myristyl ether, propylene glycol monoisostearate, 1,2-hexanediol, and combinations thereof. It has been found that anhydrous gel deodorant compositions containing 1,2-hexanediol are especially effective in providing improved clarity in the product and more gentleness when applied topically to the skin.

Other Optional Ingredients The gel deodorant stick compositions of this invention may further comprise one or more optional components that can modify the P965 physical, chemical or aesthetic characteristics of the composition or serve as additional "active" components, when deposited on the skin. The compositions may also comprise other optional inert ingredients. Many of these optional materials are already known in the deodorant art and can be used in the compositions herein, as long as these optional materials are compatible with the essential materials described herein, or they do not unduly diminish the performance of the product. . Non-limiting examples of optional ingredients suitable for use in the gel deodorant composition herein include pH buffering agents, additional emollients, humectants, soothing agents; dyes and pigments, medications; preservatives and soothing agents such as aloe vera, allantoin, D-panthenol, avocado oil and other vegetable oils and lichen extract.

Manufacturing Method The compositions of this invention can be made by any of the methods known in the art of formulating gel deodorant compositions. As will be evident by those experts in this P965 field, the particular method will depend on the choice of specific types and quantities of components used. In general, the compositions of the invention can be prepared by mixing the polar solvent, the non-polar volatile solvent, the deodorant active agent and other optional agents. The gellant is added with stirring and the mixture is heated to a temperature between about 75 ° C and about 100 ° C to allow the gellant to melt and form a translucent or substantially clear liquid. The resulting solution is cooled before adding fragrance (if applicable) and then the cold composition is poured over a suitable container or dispenser at about 70 ° C and allowed to solidify inside the container or dispenser by cooling or allowing the contained composition to cool to room temperature ambient.

Method of Use The anhydrous gel deodorant composition of this invention can be applied topically to the skin in any known manner or effective method for controlling the malodor associated with perspiration. These methods comprise applying to the armpit portion or other area of the human skin an effective and safe amount of the gel deodorant composition of the present invention.

P965 In this context, the term "safe and effective amount" refers to an amount of gel deodorant composition applied topically to the skin, which is effective in masking, reducing or eliminating the bad odor associated with human perspiration, while safe for human use in a reasonable risk / benefit ratio. In this context, a safe and effective amount typically ranges from about 0.1 grams to about 2.0 grams per armpit. The compositions preferably are applied to the armpit or to another area of the skin once or twice a day and preferably once a day.

EXAMPLES The following examples illustrate specific embodiments of the anhydrous gel deodorant compositions of the present invention, including the methods of manufacture and use, but are not intended to be limiting. Other modifications may be developed by skilled artisans without departing from the spirit and scope of this invention. Each of the exemplifying compositions is prepared by combining all the listed components, except the gelling agent and the fragrance, when applicable, and heating with stirring the combination of ingredients at a temperature above the set point.

P965 melting of the gelling agent but less than 110 ° C. The gellant is subsequently added while the mixture is combined with heat and agitation, until a translucent or essentially clear liquid results, at which time the liquid is cooled to a temperature between 65 ° C and 80 ° C. The fragrance is added with agitation to the cooled liquid. The fragrance-containing liquid is poured over a suitable dispenser or other type of container and allowed to solidify by cooling to room temperature.

P965 P965 P965 The resulting compositions described above are gel deodorants which are then applied topically to the armpit portion in an amount ranging from about 0.1 grams to about 2 grams per axilla. The compositions applied with effective to reduce, mask or eliminate perspiration odor and have good skin perception characteristics during and after application. The applied compositions have mild effects on the skin and do not cause irritation or irritation is very mild. Compositions containing a combination of triclosan and triclocarban in particular are effective to provide deodorant efficacy. The compositions containing 1,2-hexanediol provide improved clarity in the product. All exemplified amounts are given in percent by weight / weight based on the total weight of the composition, unless otherwise specified.

P965

Claims (10)

1. g *** EIVIWDICACI? g * 3ES t 1. An anhydrous gel deodorant composition comprising: (a) from 0.001% to 50% by weight of a deodorant active agent, a fragrance or a combination thereof; (b) from 0.01% to 20% by weight of a metal salt of a fatty acid gellant; (c) from 1% to 50% by weight of a non-polar volatile solvent having a solubility parameter of less than 8.0 (cal / cm 3) 0.5, a vapor pressure of 0.01 mm Hg at 6 mm Hg at 25 ° C and an average boiling point of less than 250 ° C; and (d) from 1% to 10% by weight of a polar solvent having a solubility parameter of between 12.5 to 25 (cal / cm3) 0.5. The anhydrous gel deodorant composition according to claim 1, wherein the composition comprises less than 1% by weight of water and wherein the fatty acid salt is an alkali metal salt having from 12 to 22 carbon atoms. 3. The anhydrous gel deodorant composition according to claim 1 or 2, wherein the non-polar volatile solvent is a branched chain volatile hydrocarbon having from 4 to 40 carbon atoms, a solubility parameter of from (cal / cm minus of 8.0 P965 (cal / cm3) 0.5, and a vapor pressure of 0.01 mmHg to 1.5 mmHg at 25 ° C. 4. The anhydrous gel deodorant composition according to claim 3, wherein the composition comprises a combination of two or more branched chain volatile hydrocarbons having different molecular weights, each having from 6 to 20 carbon atoms. 5. The anhydrous gel deodorant composition according to claim 4, wherein the branched chain volatile hydrocarbon is selected from the group consisting of C13-C14 isoparaffin, C7-C8 isoparaffin, C10-11 isoparaffin), C11-C13 isoparaffin, isoparaffin C11-C12 and combinations thereof. 6. The anhydrous gel deodorant composition according to any of the preceding claims, wherein the polar solvent is selected from the group consisting of glycerin, propylene glycol, dipropylene glycol, ethanol, tripropylene glycol, butylene glycol, propylene glycol methyl ether, dipropylene glycol methyl ether and combinations thereof. same. The anhydrous gel deodorant composition according to claim 6, wherein the polar solvent comprises glycerin and wherein the weight ratio of glycerin to fatty acid gellant is about P965 0.5: 1 to 3: 1. 8. The anhydrous gel deodorant composition according to any of the preceding claims, wherein the active deodorant agent is selected from the group consisting of 0.01% to 1.0% by weight of triclocarban, from 0.01% to 1.0% of triclosan and any combination thereof . 9. The anhydrous gel deodorant composition according to any of the preceding claims, wherein the composition further comprises 0.1% to 40% by weight of a moderately polar solvent having a solubility parameter of 8.0 (cal / cm3) 0.5. less than 12.5 (cal / cm3) 0.5. 10. The anhydrous gel deodorant composition according to claim 9, wherein the moderately polar solvent comprises 1,2-hexanediol. P965 SUMMARY OF THE INVENTION Anhydrous gel deodorizing compositions comprising from about 0.001% to about 50% by weight of deodorant active agent, a fragrance or a combination thereof, are exposed from about 0.01% to about 20% by weight of a fatty acid salt gelling agent, from about 1% to about 50% by weight of a non-polar volatile solvent having a solubility parameter of less than 8.0 (cal / cm3) 0.5, a vapor pressure of between about 0.01 mm Hg at about 6 mm Hg at 25 ° C and a boiling point at 1 atm of at least about 250 ° C; from about 1% to 10% by weight of a polar solvent having a solubility parameter of between 12.5 (cal / cm3) 0.5 to about 25 (cal / cm3) 0.5 and optionally a moderately polar solvent having a solubility parameter between approximately 8.0 (cal / cm3) 0.5 and less than 12.5 (cal / cm3) 0.5. Anhydrous gel deodorizing compositions comprising a select combination of metal salts of fatty acid gelling agents and glycerin are also disclosed. Anhydrous gel deodorizing compositions containing improved combinations of active deodorant agents and gel deodorizing compositions containing 1,2-hexanediol as moderately polar solvents are also disclosed. These compositions provide a P965 improved performance, produce better characteristics of clarity and / or perception in the skin, and especially are more effective to provide the application of deodorant with a smoother action on the skin and causing less irritation or absence of irritation in it. P965