MXPA99001835A - Non-aqueous antiperspirant composition - Google Patents

Abstract

Disclosed is a non-aqueous composition for reducing body malodor, containing an antiperspirant active material, volatile silicone material, non-volatile emollient material (e.g., non-volatile silicone emollient material), and a thickening agent, the thickening agent including a gelling agent which is a solid plasticizer. Illustrative gelling agents are hydroxy polyester and polydimethylsiloxanyl beeswax. Other beeswax derivatives whose free fatty acids have been reacted with silicone materials can also be used as the gelling agent for compositions of the present invention. The compositions of the present invention can be formulated as antiperspirant creams by incorporating appropriate amounts of antiperspirant active material and thickening agent in the composition, and can be used to reduce axillary perspiration. Compositions of the present invention have good rheological and viscoelastic properties.

Description

NON-AQUEOUS ANTIPERSPIRANT COMPOSITION Technical Field The present invention is directed to a non-aqueous composition for reducing body odor (e.g., a non-aqueous antiperspirant composition), which leaves a residue essentially visible on the skin, which is stable and does not exhibit synergism (fluid separation). and the cu has excellent rheological characteristics such as, for example, a cream composition, while maintaining a soft skin feel. In particular, the present invention is directed to a non-aqueous solid antiperspirant composition (e.g., a cream) that contains at least one antiperspirant active material suspended in the composition. The composition being stable and homogeneous, and not leaving essentially a visible residue on the skin.

Art Background Antiperspirant products are well known in the art. Antiperspirant products have appeared on the market in various dosage forms, such as bars, gele rollers, aerosols and creams. Of these, the dosage forms, eg the various gels, sticks and creams are constructed of a solid base material solidified by a solidification agent, and these fall within the solid compositions according to the present invention. Generally, dosage forms include a solution of the active ingredient in a suitable solvent, a suspension of the active ingredient in an n solvent, or a multiphasic emulsion or dispersion in which a solution of the active ingredient is dispersed in some continuous form or in which the active ingredient solubilized constitutes the continuous phase.

U.S. Patent No. 5,531,986 issued to Shave et al. Describes a low residual solid antiperspirant sweep made with the volatile and non-volatile silicones, high and low melt point waxes and dimethicone copolyol. _ A variety of cream formulas (also known as soft or semi-solid solids) are known. Various of these cream formulas include a clay thickener, and an activator for such a clay thickener. See, for example, U.S. Pat. No. 5,019,375 issued to Tanner et al., And U.S. Pat. of North America No. 4,526.78 granted to Marschner et al., the contents of which are incorporated herein by reference in their entirety.

Other cream compositions contain a particulate thickener such as fumed silica. See United States of America Patents No. 5,069.89 granted to Orr and United States of America Patent No. 4,937,069 issued to Shin.

This United States Patent of North America No. 4,937,069 issued to Shin discloses an essentially anhydrous antiperspirant semi-solid composition, containing specific amounts of an antiperspirant active powder thickening / suspension agents containing fumed silica solid emollients / thickeners, volatile liquid emollients / plasticizers, and volatile emollients. This patent describes that the-emolien.t & s / plastificadc, r.es Ilíq idos no volátile They are used in order to avoid a product: which produces a grainy and waxed powder on the skin after the volatile emollients evaporate; the addition of the non-volatile liquid emollients / plasticizers leaves a silky, creamy and fine residue on the skin and also imparts good adhesion to the skin. The contents of the United States Patent No. 4,937,069 issued to Shin s are hereby incorporated by reference in their entirety.

U.S. Patent No. 4,010,659 issued to Kasat, the contents of which are hereby incorporated by reference in their entirety, describe anhydrous creamy and heterogeneous antiperspirant product which contains, in percent by weight of the total weight of composition, 30-70% of a volatile silicone product as a carrier, 7-30% of a suitable gelling agent or agents, about 12-30% of a physiologically acceptable antiperspirant agent. This patent discloses that the gelatin agent can be any of a number of composition including, for example, hydrogenated vegetable oil, hydrogenated castor oil, fatty acids, beeswax, paraffin wax, fatty alcohols, polyethylene. and similar.

In spite of all the foregoing, it is still desirable to provide a cosmetic composition that is stable, exhibiting synergism. { fluid separation) and which is homogeneous and which does not essentially leave a residue with the application to the pi or after drying of the application composition while maintaining a smooth skin feeling. It is also desired to provide a composition having the above properties, and which is free of conventional gelati agents such as fatty alcohols and hydrogenated castor oil, while at the same time having good rheological properties. It is particularly desired to provide a non-aqueous antiperspirant cream composition containing the antiperspirant active material in a particulate form suspended in the composition, the composition of the properties as discussed above including good stability and not exhibiting a visible residue while at the same time. Time is maintained a feeling of smooth skin, and have good rheological properties.

Description of the invention Therefore, it is a first object of the present invention to provide an aqueous composition (for example a non-aqueous solid composition) containing antiperspirant active materials, which leaves no residue essentially visible (white) on the skin either with the application or after the drying of the composition after application, it has good cosmetic properties (including a soft skin feel) and which is stable and homogeneous (including exhibiting essentially no synergism) and a method for making and using the same It is a further object of the present invention to provide such a composition, which also has good rheological properties, and a method for making and using the same It is a still further object of the present invention to provide such a non-aqueous composition "which is easy to manufacture.

It is still a further object of the present invention to provide an antiperspirant composition (eg, an antiperspirant cream composition) which is essentially anhydrous.

The above objects are achieved by the non-aqueous composition of the present invention which contains (1 an antiperspirant active material, (2) volatile silico materials, (3) non-volatile emollient materials (for example non-volatile silicone emollients), and ( 4) a thickened agent the thickening agent includes a gelatin people which is a solid plasticizer and which acts to thicken the composition The use of this solid plasticizer as a gelation agent to thicken the composition reduces the crystallinity of the product (that is, it reduces both the size and the amount of crystals in the product), thereby increasing the aesthetics of the composition. (providing for example a feeling of soft skin) Furthermore, through the use of the plasticizer which is a solid, a product having good rheological properties can be achieved.

In general, the antiperspirant active material is included in the composition in an amount sufficient to reduce the body odor (for example, where the composition is applied to the underarm reactions of the human body, the composition contains sufficient antiperspirant active material. to reduce the bad smell that arises from perspiration in the armpit regions). The thickening agent which includes the gelation agent described above which is a solid plasticizer, is included in the composition in a sufficient amount to provide the non-aqueous composition as a solid composition, illustratively, the composition may include an amount of the thickening agent for proportion a cream composition as the final product. Therefore, semi-solid or soft solid compositions fall within the scope of the present invention. Of course, where the increased amounts of the thickening agents are included in the composition, thicker (more viscous) solid cosmetic compositions can be provided.

The compositions according to the present invention can desirably also include trihydroxystearin, which is a triester of glycerin and hydroxystearic acid (trihydroxystearin is an organic derivative of castor oil).

The non-aqueous compositions according to the present invention are easy to manufacture, with a mixture of the antiperspirant active material and the other components being formed. For example, the components can be mixed at elevated temperatures and then cooled partially (desirably before adding a volatile fragrance) when manufacturing the formulas of the present invention.

After the compositions according to the present invention have been formed, they can be introduced from the dispensing containers as is known in the art. For example, where a cream antiperspirant deodorant composition is formed, this composition can be introduced and packaged in, for example, conventional containers which have the appearance of a bar, but which supply the product through the openings in the container. the top surface of the container. In use, the product is extruded on the upper surface of the package through the openings, and product on the surface, upper; -frota, -for example on the armpit region of the human body, to deposit the product containing the active antiperspirant material on it.

Thus, through the use of the present invention, an aqueous homogeneous composition (such as an antiperspirant or deodorant composition) which leaves an essentially visible residue (white) on the skin after application and after drying can be provided. The film applied, but which is stable (without syneresis while having good cosmetic properties (including maintaining a smooth skin feel) .In addition, the compositions according to the present invention have good efficacy and good rheological properties.

Brief Description of the Drawings Figure 1 is a graph showing both storage modulus (elasticity) and the loss modulus (viscosity) against torsion for a first embodiment of the present invention.

Figure 2 is a graph showing both storage modulus (elasticity) and the loss modulus (viscosity) against torsion, for a formula of cre outside the scope of the present invention.

Figure 3 is a graph showing both storage modulus (elasticity) and the pddi modulus (viscosity) against the angular frequency, for the first embodiment of the present invention.

Figure 4 is a graph showing both storage modulus (elasticity) and the pddi modulus (viscosity) against the angular frequency, for a cream formula outside the scope of the present invention.

Figure 5 is a graph showing the cutting tension of the cutting rate, for the first embodiment of the present invention.

Figure 6 is a graph showing the cutting tension of the cutting rate, for a cream formula according to the scope of the present invention.

Figure 7 is a graph that shows both the storage modulus (elasticity) and the loss modulus (viscosity) against torsion, for both a second mode of the present invention and a solid commercial soft product.

Figure 8 is a graph showing both the storage modulus (elasticity) and the loss modulus (viscosity) against torsion, for both a third embodiment of the present invention and the soft commercial solid products.

Figure 9 is a graph showing both the storage modulus (elasticity) and the loss modulus. (viscosity) against the angular frequency, for both the third embodiment of the present invention and the commercial soft solid products.

Figure 10 is a plot of penetration force against penetration depth for third embodiment of the present invention.

Best Mode to carry out the Invention Although the present invention will be described in connection with the specific and preferred embodiments, it will be understood that no attempt is made to limit the invention to modalities. On the contrary, it is intended that the present invention cover all alterations, equivalent modifications as may be included within the spirit and scope of the invention as defined by the appended claims' .. "iu? Bü .. t? invention was described primarily in relation to antiperspirant compositions for application to the skin, particularly to the skin in the armpit regions of the human body, in order to reduce the body's malodor, for example, by reducing the flow of sweat. Armpit regions, the present invention is not limited to the specified use, Generally, the present invention is directed to compositions for reducing the body's bad odor, by reducing the bad odor of the body it is generally meant that there was less bad odor of the body after the application of composition to a person's skin (for example, the skin in the armpit region) in comparison to the bad smell of the body of the person without the application of e the composition. Such a reduction is necessarily due to the reduction of sudo flow. Antiperspirant materials may have a deodorant function, for example, an antimicrobial agent. However, when appropriate antiperspirant materials are used, they act primarily to reduce odor by reducing the sweat production.

Throughout the present description, where the compositions are described as including or comprising specific components or materials, or the methods are described as including or comprising specific processing steps, it is contemplated by the inventors that the compositions and methods of present invention also consist essentially of, or consist of the recited material components, or of the recited steps. Thus, through the present disclosure any described composition of the present invention may consist essentially of, or consist of, the recited components or materials, any method may consist essentially, or consist of recited steps.

The present invention contemplates an aqueous composition, for reducing the bad odor of a human body, containing an antiperspirant active material, volatile silicone materials, non-volatile emollient materials (for example non-volatile silicone emollient materials) and a thickener, the agent Thickener includes a gelation agent which is a solid plasticizer and which acts to thicken composition. Through the use of a solid plasticizer (eg, which is an amorphous material), the crystallinity of the product produced is reduced, while the product is provided having good rheological properties. That is, through the use of a gelling agent which is a plasticizer, both the size of the crystals in the composition and the amount of the crystals, are reduced, provide advantageous cosmetic properties. In addition, through the use of a solid plasticizer good rheological properties are achieved. By solid plasticizer, we want to mean plasticizers; which have a melt-to-feed ratio of 58 ° C, preferably of at least 62 °.

Generally, the solid plasticizers according to the present invention have a branched structure so as to achieve the desired product characteristics including reduced crystallinity and good rheological properties in a stable composition which leaves no visible residue.

US Pat. No. 4,937,069 to Northamic issued to Shin discloses semi-solid antiperspirant compositions containing among other non-volatile liquid emollients / plasticizers; The compositions described in Shin, having liquid emollients / plasticizers, do not achieve the advantages of the present invention containing solid plasticizers including, for example, the rheological properties achieved by the present invention.

Illustratively, the solid plasticizer according to the present invention can be: (1) a polyester hydroxy material or (2) a beeswax derivative in which the free fatty acids of beeswax have been reacted with the silicone materials (transesterification). Therefore, the beeswax derivative, which can constitute solid plasticizer of the present invention, can be formed by esterification of the beeswax acid free sites with silicone-containing materials, in order to form the silicone-containing derivative of the beeswax. Beeswax "is a solid plasticizer.

As illustrative of these types of non-limiting materials of the present invention, the hydroxy polyester can be a C18-38 hydroxy stearate; and the derivative of the beeswax can be a polydimethylsiloxane beeswax.

The solid plasticizer to be incorporated into the composition of the present invention may also include carnauba PEG (which has a melting point in the range of 80o-85oC).

A specific hydroxy polyester material which can be a solid plasticizer incorporated in the composition of the present invention is the hydroxy stearo stearate. This has a melting point of 58 c.

A polydimethylsiloxane beeswax, which may be a solid plasticizer in the composition of the present invention is sold by Koster Keunen, Inc. as a "Siliconil Beeswax" which is a solid amorphous material having a melting point in the 62-> range -72oc, an acid val minus; d "2'iy a - range - ~ .70-90 Other physical properties of this Beeswax Siliconil includes less than 1% free fatty acids, 11% derivatives of fatty acid ester type, 15% hydrocarbons, 14 of complex esters and 60% of monoesters Siliconil Beeswax has the following chemical structure: CH3 CH3 O / / HO - CH2CH2CH2- [- Si -0- CH2- CH2 -] x- Si -0-CH2CH2CH2 -0- C- (CH2) ra- CH3 \ \ CH3 CH3 In this structure, m varies from 22 to 30, and is 20, giving a molecular weight for the beeswax derivative of 2500 to 2700 g / m.

Silicone beeswax forms n-sticky, non-sticky films on the surface of the skin, and imparts film-forming properties to the emulsions and gels in which it is incorporated. It also reduces the tackiness of other constituents of the composition imparting a silky feel to the skin. Beeswax with siliconil has been used in facial creams and moisturizers Illustratively, and not in a limiting manner for the present invention, the plasticizer is included in the composition in an amount of 5% -20% by weight, preferably 6% -16% by weight, of the total weight of the composition.

The volatile silicone material to be incorporated into the composition of the present invention can be those known volatile silicone materials, including linear and cyclic silicone materials. A preferred volatile silicone material is cyclomethicone. Illustratively, and not in a limiting manner for the present invention, the volatile silica material is included in the composition in a quantity of 30% -70%, preferably 30% -70%, more preferably d 30% -45%, by weight, of the total weight of the composition.

The non-volatile emollient material (eg, non-volatile silicone emollient) can be any of those normally used in the art, including mixtures of at least two materials. These include, illustratively, dimethicone and PPG-14 butyl ether. Illustratively, and not in a limiting manner for the present invention, the non-volatile emollient material is included in the composition in an amount of 2% 15%, preferably 5% -10%, by weight of the total weight of the composition.

The composition of the present invention also includes an antiperspirant active material. These include, by way of example (and not of a limiting nature) aluminum chlorohydrate, aluminum chloride-, aluminum sesquichlorohydrate zirconium hydroxychloride, zirconium aluminum glycine complex (aluminum-zirconium glyceryl tretrachlorohydrate), etc. Aluminum-containing materials can be commonly referred to as antiperspirant active aluminum salts. Generally, antiperspirant active materials containing metal above are antiperspirant active metal salts. The compositions according to the present invention need not include metal salts including aluminum, and may include other antiperspirant active materials, including other antiperspirant active metal salts. Generally, the active antiperspirant ingredient Category I listed in the monograph d administration of food and drugs on antiperspirant drug products for human use on the shelf (October 10, 1973) can be used. In addition, any new drug, not listed in the monograph, such as aluminum nitrate hydrate and its combination with zirconyl hydroxychlorides nitrides, or aluminum-stannous chlorohydrates, can be incorporated as antiperspirant active ingredients and antiperspirant compositions according to the invention. present invention The antiperspirant active material is desirably included as suspended particles in the composition of the present invention, in amounts up to, for example, 30% by weight, of the total weight of the composition (illustratively, to reduce the flow-of,. the .transpiration <5n in, for example, the regions of a person's armpit, in a range of 12% -30% preferably 14% -26%, by weight, of the total weight of the composition). This is illustrative and not limiting of the present invention. As an illustrative minimum amount, and not limiting, the composition may include at least 0.1% by weight of antiperspirant active material, of the total weight of the composition; however, at lower amounts (eg d 0.1% -10% by weight, of the total weight of the composition), the material may not reduce perspiration (for example, it may act as an active deodorant material, such as an antimicrobial agent). rather than reducing perspiration). Therefore, where small amounts are included (eg, 0.1% -10% by weight, of the total weight of the composition of the antiperspirant acti material in the composition, whereby the material acts as an active deodorant material, the composition it can be a deodorant composition, for example, for application to the armpit regions of a person to reduce body odor, for example, a deodorant cream composition.

Desirably, the compositions according to the present invention also include trihydroxystearin which is a thickener in the composition. This material sold, among others. as "Thixcin R", by Rheox, Inc. (Highstown, New Jersey). Illustratively, and not in limitation for the present invention, the trihydroxystear can be included in the composition in an amount of 5% -1 by weight, preferably 5% -7% by weight, of the total weight of composition.

The compositions according to the present invention can include other ingredients conventionally incorporated in the compositions to reduce body malocracies (eg, deodorant and antiperspirant compositions). These include (but are not limited to) perfumes, cosmetic powders, dyes, emulsifiers, deodorant fragrances and antimicrobial agents (bacteriostats). As for several other ingredients which may be incorporated, attention is directed to the optional components such as the colorants, the perfumes and the fillers described in the following United States of America patents: United States of America No. 5,019,375 to Tanner others (whose contents are incorporated herein by reference in its entirety); U.S. Patent No. 4,937,069 issued to Shin (whose contents have been previously incorporated herein by reference in its entirety); and United States Patent No. 5,102,656 issued to Kasa (whose contents have been previously incorporated herein by reference in its entirety).

Conventional deodorant fragrances and / or antimicrobial agents can be incorporated into the compositions of the present invention. A fragrance will be incorporated illustratively in an amount of 0.5% -3.0% by weight, of the total weight of the composition; the antimicrobial / bacteriostat material, such as Triclosan, will preferably and illustratively be included in an amount from 0.1% to about 0.5% by weight, of the total weight of the composition. As previously indicated, where the antiperspirant active material is included in the composition in small amounts it acts as an antimicrobial agent alone and does not reduce the flow of sweat.

Illustratively, the compositions according to the present invention are essentially anhydrous. In addition, they are free of conventional gelation agents such as fatty alcohols (eg, stearyl alcohol) and hydrogenated castor oil.

The particulate materials can also be incorporated into the compositions according to the present invention, in order to further thicken the compositions. These particulate thickeners include known clay, fumed silica, talc and other known inert materials. Illustrative particles are the Cabosil M5, d Cabot Corporation.

The compositions according to the present invention may also include known inert fillers such as (but not limited to) corn starch, calcium carbonate alumina.

The compositions according to the present invention can be made by mixing the active antiperspirant material, the thickening agent (including the solid plasticizer), volatile and n-volatile silicone materials, optionally trihydroxystearin, and other components optionally. The mixture can be introduced into the dispensing containers, as with conventional solid compositions (for example, conventional cre-compositions). Where the solid composition is a cre (e.g., a soft solid or a solid-solid), these dispensing containers may be containers: 3 having a top surface with grooves there, the composition extrudes on the upper surface from a reservoir in a container, and then rubbed on the skin from the upper surface so as to deposit a film of the product on the skin. See U.S. Patent No. 5,540,361 issued to Fattori, July 30, 1996, which contents are hereby incorporated by reference in their totality with respect to dispensing containers which may be used to supply the cream compositions (semi-finished). solid or soft sole) of the present invention.

Illustratively, wherein the antiperspirant composition and composition comprising an antiperspirant actiZed material to reduce sweat in the axial regions, the composition is extruded from the interior of the dispensing can through the slots on the upper surface of the dispenser, and from the armpit regions are applied (rubbed) on the skin, as if to deposit a sufficient antiperspirant acti-material (and, if present, a sufficient active deodorant material) to reduce perspiration "and reduce the bad smell of the body originates in the armpit region of the human body.

In the following, specific examples of the compositions are established within the scope of the present invention. Of course, these specific examples are illustrative of the present invention and not limiting. In these examples, the amounts of the components are in percent by weight, of the total weight of the composition. In these examples, as well as through the present description, the various names used are the CTFA names (Cosmetics Toiletry and Fragrance Association, Inc.) as established in the Dictionary of Intangible Cosmetics International CFTA (4th Edition, 1991) EXAMPLE 1 Ingredient Amount Volatile silicone (cyclomethicone) 42.00 Non-volatile silicone (dimethicone) 7.20 PPG-14 Butyl Ether (AP Fluid) 10.00 Active Antiperspirant 26.00 CABOSIL M5 2.00 THIXCIN R 6.00 Beeswax Siliconil 6.00 Fragrance Quantity Sufficient COMPARATIVE EXAMPLE 1 Ingredient Amount Volatile silicone 53.00 Non-volatile silicone 10.00 Active antiperspirant 26.00 CABOSIL M5 2.00 Polyethylene 5.00 Propylene carbonate 2.00 Fragrance Quantity Sufficient EXAMPLE 2 Ingredient Amount Volatile silicone (cyclomethicone) 38.8 Non-volatile silicone (dimethicone) 7.2 PPG-14 Butyl Ether (AP Fluid) 10.0 Active Antiperspirant 26.0 CABOSIL M5 2.0 Beeswax Siliconil 16.0 Fragrance Quantity Sufficient EXAMPLE 3 Ingredient Amount Volatile silicone (cyclomethicone) 43.00 Non-volatile emollient (PPG-14 Butyl Ether) 12.00 Active antiperspirant 26.00 Silicone Beeswax 16.00 Hydrogenated Castor Wax -2.00 Fragrance Quantity Su icient In the formation of the compositions of the 1, cyclomethicone, dimethicone, PPG-14 butyl ether (AP Fluid) and Siliconil Beeswax were heated, together with the Cabosil M5_in_ a container at 150-165 < - > F, and they mixed. Mixing during this process was carried out using a Premier mixer. When the uniform mixing was complete, the "THIXCIN R" was added, with the mixing continuing for 10 more minutes. Then the mixture was cooled to 140o with the fragrance then added. The product was then filled in the appropriate containers.

Corresponding processing steps were carried out to provide the composition of Comparative Example 1. That is, the volatile and non-volatile silicone materials, the antiperspirant active and the Cabosil M5 were mixed together, the charge was cooled and the fragrance.

Figures 1-7 show the results of the rheology measurements for the compositions of Examples and 2 and Comparative Example 1. Three measurements were carried out to determine the rheology: a torsional force sweep, a frequency sweep and a sweep cut rate. These measurements can indicate resistance of a cream (solid or soft or semi-solid) tension, and can indicate whether the sample exhibits "stress-induced flow with recovery (viscoelasticity)." Sweeps of torsional force and frequency define the viscoelastic properties of the composition, while the cutting rate sweep defines the viscosity properties while cutting.These three properties are important properties for creams (soft or semi-solid solids), with respect to their flow characteristics. especially true pair the sweep rate of cut, which is a measurement made during the movement of the composition.

Viscosity measurements refer to the continuous (fluid) phase of the composition. Elasticity measurements refer to how the product reacts to stress, and indicates the characteristics of recovery product in the container. It is required that there be a balance between the elasticity and the viscosity of the cream compositions (of soft or semi-solid solid) in order to achieve a composition with the most desirable properties. This balance achieves by compositions of the present invention.

The rheology measurements shown in Figures 1-6, 8 and 9 were carried out using a CSL2 100 Carri-Med rheometer from TA Instruments (of New Castle, DE). The following Table 1 shows the rheometer conditions and the geometry used for sweeps.

TABLE 1 Figures 1 and 2 respectively show the torsional force sweeps for Example 1 and for Comparative Example 1. In Figure 1, curve 1 is a storage modulus (elasticity) and curve 2 is the loss modulus (viscosity). ), and in Figure 2, curve 3 represents the storage modulus (elasticity) and curve 4 represents the loss modulus (viscosity).

As seen in Figures 1 and 2, the response torsional force applied by the composition of Example 1 is similar to that of the composition of Comparative Example 1. The value of the initial storage modulus (elasticity for Example 1 is greater that of the Comparative Example with both examples resisting high levels of torsional force applied The viscosity data acquired from the test at 100 mN "m indicate" that both tests are very different as shown in the following: Example 1: 102900 Pa «S (1.9E + 8cP) Comparative Example 1: 5485 Pa * S (5.4E + 6cP).

Figures 3 and 4 show the frequency sweeps for the compositions respectively of Example and Comparative Example 1. In Figure 3, curves 5 and 6 respectively are the storage module and the loss modulus for the composition of Example 1. In Figure 4, the curves 7 and 8, respectively, are the storage module the loss module for the composition of Comparative Example 1. The difference in the storage module, as shown by curves 5 and 7, are similar to sweeps of torsional force and in good coincidence. Both samples have good profiles, indicating a structural integrity of order cut and long order. In addition, the composition of Comparative Example 1 is more elastic (solid type) than the composition of Example 1. This was derived from the tan (d) value which is the ratio of the loss modulus to the storage module. The tan (d) at an angular frequency of 2.5 radians / second is 0.116 for the composition of Example 1 and 0.044 for the composition of Comparative Example 1.

Examples of the thixotropic circuits are shown in Figures 5 and 7, respectively for the composition of Example 1 for the composition of Comparative Example 1. This test was used to simulate the cut applied by the consumer when the gel is dispensed through. barrel holes (< 30 sec "1). Suffice it to say that the compositions of Example 1 and Comparative Example 1 are soft solids because none indicate flow under these conditions.

The resistance to flow is shown in the data of Table 2 given below. Both samples can not achieve any significant cutoff rate (flow viscosity) due to high voltage.

TABLE 2 Cutting Rate (1 / s) Cutting Voltage (Pa) Viscosity (Pa »s) Prototype I 6 .59 E-4 502. 5 762. 500 Prototype I I 0. 0145 550 .3 37. 950 Figure 7 shows a comparison of torsional force sweep of the composition of Example 2, compared to a commercial soft solid product. In Figure 7, curves 9 and 10 represent respectively the storage module and the loss modulus of the composition of Example 2, and curves 1 and 12 respectively represent the storage module and the loss module of the commercial product. As clearly seen in Figure 7, both the storage module and the loss module of the compositions according to the present invention are greater than those of the commercial product.

Products 8 and 9 show the results of the rheology measurements for the composition of Example 3 and for two commercial soft solids antiperspirant compositions. Figure 8 shows the torsional sweeping force and Figure 9 shows the frequency sweep. The results are similar to those achieved in relation to Examples 1 and 2. In Figure 8, curves 13 and 14 respectively are the storage module and the loss modulus of the composition of Example 3; the curves 15 and 16 respectively are the storage module and the loss module of a first commercial soft solid product; and curves 17 and 18 are the storage module and the loss module of a second commercial soft solid product. In figure 9, curves 19 and 20 respectively are the storage module and the loss module of the composition of Example 3; the curves 21 and 22 respectively are the storage module and the loss module of the first commercial product; and curves 23 and 24 respectively are the storage module and the loss module of the second commercial product. Neither the first nor the second commercial product contains, among others, silicone beeswax as in Examples 1-3.

Figure 10 is a graph of the penetration force against the penetration depth for the composition of Example 3, showing an essentially linear relationship between them.

Thus, by the present invention a non-aqueous homogeneous composition can be provided to combat the body's malodour, which is stable (eg, does not exhibit any synergism), and which leaves no visible residue (white), either with application or after drying the applied composition. The composition has good rheological properties when formulated as a cream and has good cosmetic properties (including maintaining a smooth skin feeling). In addition, the composition is easy to manufacture.

Industrial Applicability The non-aqueous composition of the present invention has applicability as a deodorant composition especially as an antiperspirant composition, to reduce malodour (eg, to reduce the flow of perspiration) from the armpit regions of the human body.

Even though we have shown and described several embodiments according to the present invention, it is understood that it is not limited thereto, but is susceptible to numerous changes and modifications as known by one having ordinary skill in the art and we therefore, we do not wish to limit ourselves to the details shown and described here, but rather attempt to cover all such modifications as covered by the scope of the appended claims.

Claims (41)

R E I V I N D I C A C I O N S

1. A non-aqueous composition comprising: (a) an antiperspirant active material, in an amount sufficient to reduce the odor of a human body when applied to the. body, in comparison to the bad smell of the body without the application of the composition to it; (b) a thickening agent comprising a gelation agent which is a solid plasticizer selected from the group consisting of hydroxypolyester, polydimethylsiloxanyl beeswax, and mixtures thereof, the thickening agent being included in the composition in an amount sufficient to provide a solid composition; (c) a volatile silicone material; Y (d) a non-volatile emollient material.

2. The composition as claimed in clause 1, characterized in that the gelation agent is hydroxy polyester.

3. The composition as claimed in clause 1, characterized in that the gelation agent is polydimethylsiloxanil beeswax.

4. The composition as claimed in clause 1, characterized in that the thickener is included in the composition in an amount sufficient to provide a cream composition.

5. The composition as such and as claimed in clause 1, characterized in that the antiperspirant active material is included in the composition in a sufficient amount to reduce a flow of perspiration from the body.

6. The composition as claimed in clause 5, characterized in that the antiperspirant active material is an antiperspirant active metal salt.

7. The composition as claimed in clause 6, characterized in that the antiperspirant active metal salt is in a particulate form suspended in the composition.

8. The composition as claimed in clause 5, characterized in that the antiperspirant active material is in the form of particles, suspended in the composition.

9. The composition as claimed in clause 8, characterized in that the volatile silicone material is cyclomethicone.

10. The composition as claimed in clause 8, characterized in that the non-volatile emollient material includes a non-volatile silicone emollient material.

11. The composition as claimed in clause 10, characterized in that the non-volatile silicone emollient material is dimethicone.

12. The composition as claimed in clause 8, characterized in that the non-volatile emollient material is PPG-14 butyl ether.

13. The composition as claimed in clause 3, characterized in that it also comprises trihydroxystearin.

14. The composition as claimed in clause 13, characterized in that the thickening agent is included in the composition in an amount sufficient to provide a cream composition.

15. The composition as claimed in clause 14, characterized in that the antiperspirant active material is included in the composition in a sufficient amount to reduce the flow of perspiration from the body.

16. The composition as claimed in clause 15, characterized in that the antiperspirant active material is in the form of particles, suspended in the composition.

17. The composition as claimed in clause 1, characterized in that it also comprises trihydroxystearin.

18. The composition as claimed in clause 17, characterized in that the antiperspirant active material is included in the composition in a sufficient amount to reduce the flow of perspiration from the body.

19. The composition as claimed in clause 18, characterized in that the antiperspirant active material is in the form of suspended particles in the composition.

20. The composition as claimed in clause 19, characterized in that the thickening agent is included in the composition in an amount sufficient to provide a cream composition.

"21. The composition as claimed in clause 1, characterized in that the antiperspirant active material is included in the composition in a sufficient amount to reduce the flow of perspiration from the body.

22. The composition as claimed in clause 21, characterized in that the antiperspirant active material is in the form of suspended particles in the composition.

23. The composition as claimed in clause 22, characterized in that the thickening agent is included in the composition in an amount sufficient to provide a cream composition.

24. The composition as claimed in clause 2, characterized in that the hydroxypolyester is C18-38 hydroxystearate.

25. The composition as claimed in clause 1, characterized in that the antiperspirant active material is included in the composition in a quantity sufficient to have an antimicrobial effect; but not enough to have an antiperspirant effect, so the composition is a deodorant composition.

26. A non-aqueous composition comprising in percent by weight based on the total weight of the composition: (a) an antiperspirant active material in an amount of 0.1-30% by weight; (b) a thickening agent including 5-20% by weight, of the total weight of the composition, of a gelation agent which is a solid plasticizer selected from the group consisting of hydroxypolyester, polydimethylsiloxanil beeswax and mixtures thereof; (c) 30-70% by weight of a volatile silicone (d) of 2-15% by weight of a non-volatile emollient material.

27. The composition as claimed in clause 26, further characterized in that it comprises 5-10% by weight, of the total weight of the composition, of trihydroxystearin

28. The composition as claimed in clause 27, characterized in that the non-volatile emollient material includes a non-volatile silicone emollient material.

29. The composition as claimed in clause 28, characterized in that the non-volatile silicone emollient material is dimethicone.

30. The composition as claimed in clause 27, characterized in that the non-volatile emollient material includes PPG-14 butyl ether.

31. The composition as claimed in clause 27, characterized in that the composition includes 0. 1-10% by weight, of the total weight of the composition, of antiperspirant active material.

32. The composition as claimed in clause 27, characterized in that the composition includes 12 30% by weight, of the total weight of the composition, of antiperspirant active material.

33. The composition as claimed in clause 29, characterized in that the non-volatile emollient material includes PPG-14 butyl ether.

34. The composition as claimed in clause 29, characterized in that the composition includes 0.1-10% by weight, of the total weight of the composition, of the antiperspirant active material.

35. The composition as claimed in clause 29, characterized in that the composition includes 12 30 percent by weight, of the total weight of the composition of the antiperspirant active material.

36. The composition as claimed in clause 29, characterized in that said gelling agent is at least one material selected from the group consisting of hydroxy polyester and beeswax of polydimethylsiloxanil.

37. A method for reducing body odor, comprising the step of applying the composition as claimed in clause 29, to the armpit regions of the human body.

38. A method for reducing body odor, comprising the step of applying the composition as claimed in clause 21, to the armpit regions of the human body.

39. A method for reducing body odor, comprising the step of applying the composition as claimed in clause 13, to the armpit regions of the human body.

-40. A method for reducing body odor, which comprises the step of applying the composition as claimed in clause 5, to the armpit regions of the human body.

41. A method for reducing body odor, comprising the step of applying the composition as claimed in clause 1, to the armpit regions of the human body. SUMMARY A non-aqueous composition for reducing body odor is described, containing an antiperspirant activ material, a volatile silicone material, a non-volatile emollient material (e.g., a non-volatile silicone emollient material) and a thickener agent. Thicken includes a gelation agent which is a solid plasticizer. Illustrative gelling agents are hydroxy polyester and polydimethylsiloxanyl beeswax. Other beeswax derivatives whose free fatty acids have been reacted with the silicone materials can be used as the gelation agent for the compositions of the present invention. The compositions of the present invention can be formulated as antiperspirant creams by incorporating appropriate amounts of antiperspirant active material and thickener in the composition, and can be used to reduce underarm perspiration. The compositions of the present invention have good rheological and viscoelastic properties.