JPH06507413A - Acid-stable gel stick antiperspirant compositions and methods for producing them - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Acid stable gel stick antiperspirant composition and their manufacturing method Technical field The present invention relates to antiperspirant compositions in the form of solid gel sticks. For more details, please refer to the main issue. Akira is an antiperspirant gel stick containing dibenzylidene alditol gelling agent. related. The present invention further relates to a method of making an antiperspirant gel stick composition.

Background of the invention There are three main types of antiperspirant stick formulations: compressed powder stick, gel stick There are sticks and wax sticks. Each of these formulation types may be useful under certain usage conditions. However, each also has its drawbacks. For example, compressed powder sticks are brittle and hard. They often leave a cosmetically unacceptable powder on the skin upon application. row base The formulation may also be cosmetically unacceptable due to factors such as hardness, stickiness and stickiness. This may result in a dirty product. The opacity of such wax sticks and their Residues resulting from use are also aesthetically undesirable.

Gel paste sticks have some advantages that both compressed powder and wax sticks do not have. has advantages. For example, gel sticks leave very little residue or dust on the skin. Or there is a tendency not to leave it at all. Gel sticks have a vehicle that easily glides on the skin surface. It also provides a user interface that makes applying the product very easy and comfortable.

Unfortunately, it is difficult to form effective and stable antiperspirant compositions in the form of gel sticks. It is. One important ingredient in antiperspirant gel sticks is the gelling agent. many Known cosmetic gel sticks contain a gelling alcohol solution.

A gelling agent such as sodium stearate was used to form the gel.

However, such gels and other agents may interact with antiperspirant active agents. Cannot be used in the presence of acidic antiperspirant active salts.

A gelling agent that is more useful in the manufacture of antiperspirant gel sticks is dibenzylidenzo. dibenzylidene sorbitol, such as rubitol (DBS). for example , U.S. Pat. No. 4.154., Roehl et al., issued May 15, 1979. No. 816, US Pat. No. 1, Loebbe et al., issued March 28, 1989. No. 4.816.261; McCx issued on May 10, 1988 See U.S. Pat. No. 4,743,444. Various substituted dibenzylidene als Ditol gelling agents can also be used in antiperspirant gel sticks.

Kao's Japanese Publication Application No. 64-62377 published on March 8, 1989 The specification describes fluorine as an effective gelling agent in cosmetic compositions containing a wide range of organic solvents. It describes dibenzylidene polyhydric alcohol derivatives.

Matai et al., U.S. Pat. No. 4,429, issued January 31, 1984. No. 140 describes a method for producing DBS and its derivatives. Open The DBS derivatives shown include lower alkyl groups with 1 to 3 benzene rings, lower alkyl groups, and Some are substituted with a koxy group, a halogen atom, or a nitro group.

MahalfB U.S. Pat. No. 4,371.6, issued January 1, 1983. No. 45 describes plastics containing DBS derivatives for improved transparency. It describes the composition. These DBS derivatives have meta and/or para positions. must contain chlorine or bromine substituents, lower alkyl, hydroxy, methoxy , mono- or dialkylamino or fluorine substituents. di(p-black) b) DBS, di(p-fluoro)DBS and di(p-methoxy)DBS are all Specifically disclosed.

European patent for ROquesCF+e+es published on December 1, 1988 Application No. 0286522 describes a method for producing high-purity alditol diacetal. It describes about. p-Chloro DBS is disclosed.

A gelling agent found to be particularly useful in antiperspirant gel sticks was introduced in 1990. Oh, Ioneja and Cannot U.S. patent application filed April 6th No. 071505°807. This application is based on the benzene ring structure. Discloses substituted dibenzylidene alditols derivatized at the t-position. illustration The compounds include di(m-fluoro)DBS and di(m-chloro)DBS.

These m-substituted dibenzylidene alditols have improved stability under acidic conditions. has.

Processing of antiperspirant gel stick containing dibenzylidene alditol gelling agent and during manufacturing, the gelling agent is dissolved in a solvent, typically a monohydric or polyhydric alcohol. It is necessary to understand. To do this, the temperature must be sufficiently high to induce solubilization. heating the ingredients to a temperature that is above the gelling point of the gelling agent/solvent solution. is necessary. Unfortunately, the relatively high temperatures required require antiperspirant actives or Gelling agents tend to degrade in the presence of other acidic substances. This is packaged and then above the gel point before the end of cooling to form a gel. This is exacerbated by practical problems during processing that often require the composition to be maintained at high temperatures. often. Decomposition occurs over the life of the product, even at lower temperatures. It may continue. Therefore, penzylidene alcohol, which shows improved gel stability, There is a need to provide an antiperspirant gel stick composition containing a ditol gelling agent. be.

Antiperspirant gel stick set with reduced gelling agent degradation in the presence of acidic substances There is a further need to provide a method for making a product.

Attempts have been made in the past to serve these purposes. For example, dated February 2, 1988 No. 4,722,835 to Schampet et al., issued in 1988. U.S. Pat. No. 4,719,10 to Rxndhava et al., issued January 12, 2013. No. 2, U.S. Patent No. 4 to Schampet et al., issued May 21, 1985. ．． No. 518.582 and Schamper dated February 16, 1988. No. 4,725,430 to et al., dibenzylidene monosol It can be used as a stabilizer in antiperspirant sticks that utilize bitol acetal gelling agents. It has been proposed to incorporate basic metal salts in certain compositions. gelling agent stabilizer Certain basic metal salts that can be added as magnesium sulfate, zinc acetate, Zinc, calcium acetate, magnesium oxide, calcium carbonate, calcium hydroxide , magnesium carbonate, sodium carbonate, zinc carbonate and potassium carbonate. US Patent No. 4,518,582 uses hexamethylenetetra as a gel stabilizer. No. 4,725,430 discloses the use of N-( 2-hydroxyethyl)acetamide. These compositions are Although said to increase gelling agent stability, the disclosed stabilizers do not contain off-flavors, especially acid their effectiveness, such as compatibility with other ingredients (at normal pH), compatibility with the skin, etc. or have certain drawbacks that limit their ability to be incorporated into existing consumer products. Ru.

The present invention provides improved gelling agent efficacy during processing and storage, and improved gel stability of the composition. Can exhibit low gelling agent interaction with qualitative and acidic substances, e.g. antiperspirant actives. Special gel used in antiperspirant gel compositions containing dibenzylidene alditol The present invention provides a stabilizing agent. In addition, its gelling agent stabilizer eliminates unwanted off-flavors from the product. Compatible with other ingredients in the composition. The present invention relates to the use of such compositions. A manufacturing method is also provided.

Summary of the invention The invention: (a) 0.5 to about 35% antiperspirant active; (b) substituted and unsubstituted dibenzylides; alditols (e.g. sorbitol, xylitol and ribitol) and about 0.5 to about 10% of a gel agent selected from the group consisting of a mixture of; (cl preferably selected from the group consisting of monohydric and polyhydric alcohols and mixtures thereof) from about 5% to about 98% of the solvent for the gelling agent, including the solvent material: (d) gel other agent; about 0.05 to about 5% by weight of stabilizer, which stabilizer has a p of about 3.8 to about 6.5 at 25°C. is a basic metal salt of an acid having a Ka; the salt is at least partially soluble in the composition. The above stabilizers are C-C dicarboxylate, C-C monocarboxylate, substituted or unsubstituted benzoates and mixtures thereof. (the stabilizer does not have amino or amide functionality); Provided for a solid antiperspirant composition in the form of a gel stick having an acidic pH, comprising: do.

Detailed description of the invention Solid antiperspirant compositions encompassed by the present invention are in the form of gel sticks. these The sticks deposit an effective amount of antiperspirants on the skin when they are used normally On the other hand, it has appropriate hardness to maintain dimensional stability during use and storage. vinegar The hardness of the tick is determined by the American Society for Testing and Banma. Terrials (ASTM) Method D-5 (＾me+1can 5ociet7 forTenting and Maje+ial+ (ASTM) Meth It can be investigated by various methods including od D-5). This method Use a needle or polish cone of the same amount and size, which will stick for a specified amount of time. is moved downward in the liquid substance. The distance moved by the needle or cone is the distance moved by the needle or cone. It is a relative measure of tick hardness. ASTM-DI321 arrowhead molding weighing 50g Inlet needle [Fisher Scientific (Fi+cbe+5cieli) fic Co,) Sales model +3-401-101 and model 13-399- Using the D-5 method with a 10-needle anthropometer (sold by Fisher Scientific) However, the stick composition of the present invention showed an I of 171O for 5 seconds at ambient temperature. Preferably about 60 to about 200, more preferably about 100 when measured in units of with an average penetration value of ~160. These values indicate that such intrusive values are varies from stick to stick, so the average degree of stick penetration within a given production batch represents.

The stick compositions of the present invention are acidic in nature due to their incorporation of antiperspirant actives. It is gender. Specifically, they have an apparent pH of about 1.5 to about 4. “Appearance The term ``pH'' is used here because the composition is usually non-aqueous; Therefore, the pH of the composition is measured in a non-aqueous system. Specifically, the pH is Determined by melting the liquid and measuring its pH at 25°C using a standard pH meter. be done. The stick is heated at a relatively high temperature (e.g. for about 1 hour at about 120°C). If melted, it will not resolidify on cooling and the pH at 25°C can be easily measured. Ru. Under these conditions, the apparent pH of the compositions of the invention should be between about 1.5 and about 4. It is possible.

All parts, percentages and ratios specified herein are expressed unless otherwise indicated. Depends on weight.

The essential and optional components of the invention are described in detail below.

gelling agent The compositions of the present invention are about 0.5% to about 10%, preferably about 2% to about 5%, most preferably contains from about 2 to about 3.5% of a specifically defined gelling agent component. This gelation The agent component is substituted or unsubstituted dibenzylidene sorbitol (e.g. sorbitol , xylitol or ribitol). Dibenzylidene sorbitol (DBS) ) and DBS derivatives are preferred.

To assist in understanding the invention, the ortho, meta and para positions are shown below. Nijibe which is the formula of dibenzylidene sorbitol and dibenzylidene xylitol ndzilidene sorbitol dibenzylidene xylitol Dibenzylidene ribitol is structurally similar to dibenzylidene xylitol. However, it is based on ribitol rather than xylitol.

Other unsubstituted dibenzylidene sorbitols include dibenzylidene xylitol ( D B X') and dibenzylidene ribitol (D B R).

Preferred substituted dibenzylidene sorbitols are substituted with one or more electron withdrawing groups. Ru. It is particularly preferred when the substituent is an electron-withdrawing group located in the meta position, provided that The substituent may be located in the para or ortho position. Similarly, substituents are meta and para , meta and ortho or para and ortho positions. Like Examples of new electron-withdrawing substituents include 10) (2F, -CH2C1, -Fl -C1, - Br, -I and -(:H=CHNO2. Preferably, electron-withdrawing substituents are At least one is located at the meta position of the benzene ring. Multiple substituents (in their list) ) is in the meta position as long as at least one of its lists is in the meta position. Any of these preferred gelling agents may be utilized.

Most preferably the alditol is sorbitol.

In other preferred gelling agents, at least one of the certain substituents is on the benzene ring. Located in the meta or para position.

Furthermore, two or more of these substituents (or substituents not listed) may be in a particular molecule as long as at least one of the list is located in the meta or para position. May be included. These substituents include -NO2, -CF　C11-8o H, -8o R, -Co2H.

-Co　R, -CONH2, -CHol-COR and -C3N, R is C- C alkyl.

Particularly preferred substituted gelling agents for use in the present invention have the following substituents at the meta position: -CHF, - It has CHCl, -F, -C1°-Br, -I and -CIl=CHN02. − Particularly preferred are the F and -CI substituents. This meta-substitution is the only substitution in the benzene ring. It is preferable that there be. The substituents listed here are common on both benzene rings of the compound. Always seen. Di(m-fluoropenzylidene)sorbitol and di(m-chloro Particularly preferred is benzylidene) sorbitol.

The substituents provide a gelling agent that exhibits good stability in the acid environment of antiperspirant compositions. . The preferred subgroups of these substituents are that they usually give stronger gels. It is a group with a small molecular size because of its tendency. For this reason , for example, gels obtained with fluorine or chlorine substituted compounds are trifluoromethyl tend to be stronger than those obtained with substituted compounds. Useful in the composition of the present invention It is also preferred that the gelling agent used has a high purity. For example, they are their p-toluenesulfonic acid or any other catalyst used in the synthesis and these gels. It should be substantially free of any salt forms (eg, sodium) of the oxidizing agent. So The presence of impurities, such as, tends to weaken the gel that is formed.

Mixtures of the gelling agents specified herein may also be used in the compositions of the invention.

The gelling agents that can be used here are generally Patent No. 1,291,819; Schnm issued May 28, 1985 U.S. Pat. No. 4,518.582 to Per et al., issued May 15, 1979. U.S. Pat. No. 4,154,816 to Roehl et al.: March 28, 1989 U.S. Pat. No. 4,816.261 to Lucbbe et al., issued on 1988. McCall U.S. Pat. No. 4,743.444, issued May 10, 2006; U.S. Patent No. 4.429 to Murai et al., issued January 31, 1984. ．． No. 140, all of which are incorporated herein by reference. be included.

Preferred unsubstituted DBS is, for example, GELL-ALL-D. (Manufactured by New Japan Chemical Co., Ltd. ] and MILLITI (IXI 925) Milliken Chemical, a division of Liken & Compan7) It is commercially available as (manufactured by Ken Chemical).

Preferred meta-substituted gelling agents are incorporated herein by reference, December 1, 1988. European Patent Application No. 028652 for Roqt+ejteF+ens published on date Meta-substituted benzaldehyde can be converted to the corresponding meta-substituted benzaldehyde using the reaction shown in No. 2 specification. Usually formed by converting to a replacement DBS. As a specific example, m-fluoro The synthesis of DBS and m-chloroDBS is described below.

Vitol (1000 g; 5, 52 mol) in D-so in 3000 ml of distilled water, m -fluorobenzaldehyde (1240g; 9.99mall and p-) toluene A solution of sulfonic acid hydrate (1310 g; 6.87 mol) was heated at 30°C for 21 hours. Stirred. The resulting suspension was adjusted to pH 7.0-7.5 with 10% NaOH aqueous solution. The white precipitate is collected by filtration. The solid was then reagent grade acetate:/(3 X10.01) and suspended continuously in warm (60°C) distilled water (3xlO,Ol). The purified di(m-fluoro)DB was collected and dried under vacuum at 50°C. Obtain 1113 g (47%) of S.

Di(m-chloro)DBS is also synthesized using a similar procedure, except that m-chloro Nuzaldehyde is used in place of m-fluorobenzaldehyde.

The para-substituted compounds used in the present invention are also synthesized using similar procedures, with the exception that p -Substituted benzaldehydes are utilized as starting materials. Substituted dibenzylidenexy The general synthesis method for litol and substituted dibenzylidene ribitol was published in March 1989. Kao's Japanese Publication Application No. 64-62377 published on August 8th and January 1984 In U.S. Pat. No. 4,429,140 issued by Mu et al. disclosed herein, both of which are incorporated herein by reference. Similarly, ortho-substituted compounds Can be manufactured.

antiperspirant active agent The compositions of the present invention are about 0.5% to about 35%, preferably about 5% to about 35%, more preferably about 5% to about 35%. It also contains about 5% to about 25% antiperspirant active. What are antiperspirant actives? Antiperspirant active astringent metal salts and astringent complexes of such salts. The activator is It may be blended in either solution or particle form. Transparent or translucent stick composition When desired, the composition includes an antiperspirant active that can be present in dissolved form in the solvent system. must be included. Because this solvent system forms a base matrix with gelling agents, The same solvent used for On the other hand, other solvents can also be used to suppress sweating in addition to gelling agent solvents. Can be used as a deactivator solvent. These weight percentages are calculated on an anhydrous metal salt basis. (excluding glycine, salts of glycine or other complexing agents). used in particle form Sometimes the material is about 1 to about 100 microns, preferably about 1 to about 50 microns. Preferably, the particle size is 100%. They may be minute in shape or microspheres; and preferably have a high bulk density (eg, about 0.7 g/ci or higher). child For example, many aluminum or zirconium astringent salts or complexes are well known in the antiperspirant industry.

Any aluminum astringent antiperspirant salt or aluminum and/or zirconium Mu-convergent complexes can also be used here. As a component of an astringent antiperspirant salt or an astringent complex Useful salts include aluminum halide, aluminum hydroxyhalide, Conyloxyhalide, zirconylhydroxyhalide and mixtures of these substances There is.

Aluminum salts of this type include aluminum chloride and the general formula AI (OH ) There is an aluminum hydroxy halide with IQL XH20, and in situ Q is chlorine, bromine or iodine; X is about 2 to about 5, and x+y=about 6 However, X and y need not be integers; X is from about 1 to about 6. This type of a Luminium Salts Published June 3, 1975, incorporated herein by reference. Gilman U.S. Pat. No. 3,887.692 and September 9, 1975. 1anes and RI+bino U.S. Patent No. 3,904,741 issued It can be manufactured as described in more detail in the specification.

Zirconium compounds useful in the present invention include zirconium oxy salts and zirconium There are both zirconyl salts and zirconyl hydroxide salts. Also called oxysalt. These compounds are represented by the following general empirical formula: 2+0 (OH) B 2-n+X In the above formula, 2 is about 0.9 to about 2 and does not need to be an integer; n is the valence of B. Yes; 2-nz is 0 or more; B is halide, nitric acid, sulfamic acid, sulfuric acid and mixtures thereof. Only zirconium compounds have this Although exemplified herein, other Group IVB metal compounds, including hafnium, are also useful in the present invention. It will be understood that it can be used.

In the case of basic aluminum compounds, the above formula can be simplified and used in various amounts. Compounds having coordinate bonds and/or bound water and the above polymers, mixtures and complexes will be understood to represent and include. As can be seen from the above formula, di Ruconium hydroxy salts vary in number of groups from about 1.1 to slightly more than 0 per molecule. A range of compounds having varying amounts of hydroxyl groups are represented in practice.

Several types of antiperspirant complexes utilizing the antiperspirant salts are known in the art. example For example, U.S. Patent No. 3 to Luedde+s et al., issued February 12, 1974 ．． No. 792.068 describes aluminum, zirconium and glycine. discloses a complex of amino acids.

Complexes such as those disclosed in the Laedders et al. patent and other similar complexes are generally known as ZAG. ZAG complex is aluminum, zirconium and chlorine can be chemically analyzed for the presence of The ZAG complex useful here is aluminum Molar ratio of zirconium to zirconium (hereinafter referred to as “Al:lr” ratio) and total metal to chlorine molar ratio The ZAG complex is The body is about 1.67 to about 12. 5 Al:2+ ratio and about 0.73 to about 1.93 gold genus, with C1 ratio.

Preferred ZAG complexes are: (A) (1) 1 part AI (OH)61Q, (Q is chlorine, bromine and iodine an anion selected from the group consisting of; m is an integer from about 0.8 to about 2.0; (2) 1 part of XrO (Off) Q nHO (Q is chlorine, bromine or 2-a a 2 is iodine; a is about 1 to about 2; n is about 1 to about 8; X is about 0.16 (3) Glycine, dl-)Liptophan, di-β - phenylalanine, dl-valine, dl-methionine and β-alanine (p has a value of about 0.06 to about 0.53) ) in water.

(B) co-drying the resulting mixture to a brittle solid; and (C) the resulting dry inorganic - forming the organic antiperspirant complex into particulate form; It is formed by

Preferred aluminum compounds for the production of such ZAG type composites have the empirical formula A. I2(OH)sCl.2H20 aluminum chlorohydroxide.

A preferred zirconium compound for producing such a ZAG type composite is shown in the empirical formula 2. Zirconyl hydroxychloride with rO(OH)CI.3H20 and empirical formula zrO(0 old C1・n[I Q2-a 2 2 (a is about 1.5 to about 1.87; n is about 1 to about 7) It is roxyhalide. Preferred amino acids for the production of such ZAG type complexes The acid is glycine of formula CI (NO3)COOH. Such amino acid salts Can be used in antiperspirant complexes. April 1, 1977, incorporated herein by reference. See U.S. Pat. No. 4,017,599 to Robino, issued on 2nd. .

Various other types of antiperspirant complexes are also known in the art. For example, 1975 9 5ieH1 U.S. Patent No. 3,903,258, issued on May 2nd, Zirconyl chloride to aluminum hydroxide and aluminum chlorhydro About zirconium aluminum composite produced by reacting with oxide Disclosed.

Rubino U.S. Patent No. 3.979,51, issued September 7, 1976. Specification No. 0 describes a certain aluminum compound, a certain zirconium compound, and a certain compound. Antiperspirant complexes formed from combined aluminum buffers are disclosed.

In U.S. Pat. No. 3,981.896, issued September 21, 1976, is manufactured from aluminum polyol compounds, zirconium compounds and organic buffers. discloses an antiperspirant complex. Published on July 20, 1976 In MeCCa's U.S. Patent No. 3'970.748, the general formula % is approximately % hydroxyglycinate complexes are disclosed.

All such patents are incorporated herein by reference.

Of all the above types of antiperspirant actives, the preferred compounds include the empirical formula AI 2 (OH)s C1・2H20 5/6 basic aluminum salt (such chemical The compound is commonly referred to as aluminum chlorohydrate (“ACH”); approximately 0.5 having an aluminum chloride to aluminum hydroxide chloride weight ratio within mixture of AlCl3.6H20 and Al2(OH)5Cl.2H20; The conium salt is 2+O(OH)Cl　・3H20, and the aluminum salt is Al 2(Off+5CI・2H20 or AlCl3@6820 and Al2(OHI5 C1-2H20] ZAG type complex which is the above mixture (all gold in the complex The genus to chloride mole ratio is about 1.25 or less; Al: X+-11-le ratio 1 ; about 3, 3 theal; the amino acid is glycine); the zirconium salt is i ! +O(0 old CI・nil,, 0(a is about 1.5 to about 1.87 and -a a n is about 1 to about 7), the aluminum salt is Al2(Of)sCl ・21 (20, there is a ZAG type complex whose amino acid is glycine.

The solubilized antiperspirant actives utilized in the present invention are also well known in the art and include those described above. Contains active agent. Compositions containing solubilized antiperspirant actives are Add monohydric or polyhydric alcohol or water to dissolve the antiperspirant active before applying. Use a solvent such as Examples of active agents for such use are e.g. Rubino U.S. Pat. No. 4,137,306, issued January 30, 1 Sa+ith and War+I U.S. patent applications filed June 23, 989 No. 370,559 and European Published Application No. 370,559, published December 14, 1988. No. 0295070, all of which are incorporated herein by reference. It will be done. ACH is a preferred type for compositions containing solubilized antiperspirant actives. It is an activator.

Examples of particularly preferred activators include improved potency ACH (IACH) and There is a ZAG (IZAG) with improved efficacy. High potency is due to improved molecular distribution . 1982, all such materials are incorporated herein in their entirety by reference. U.S. Pat. No. 4,359.456 to Golfing et al., issued Nov. 16. No.: U++1ley+ Lim1ted published on January 9, 1980 Armou published European Patent Application No. 6739, June 4, 1986 rPhgrmxceolicxl Compxn7 European Patent Application Publication No. 183 , No. 171; G11leHe C++ published on December 10, 1980 mpxB UK Patent No. 2,048, '229; published August 20, 1986 Lin1layer PLC European Patent Application Publication No. 191.628; 1 British special edition of G11let+e Compan7 released on March 20, 1985. Patent No. 2,144.992; Unile published on January 23, 1980 Already combined with European Patent Application No. 7191 of ve+Li1Ilited No. 370,559, filed June 23, 1989, and It is described in European Patent No. 0295070.

The compositions of the present invention are about 5% to about 98%, preferably about 7% to about 90%, most preferably It also contains about 60 to about 85% gelling agent solvent. The solvent is combined with a gelling agent Form a solid stick base matrices in case.

As will be apparent to those skilled in the art, the choice of specific solvent will depend on the desired stick characteristics. Dependent. For example, the solvent may have antiperspirant activity in formulations with solubilized antiperspirant actives. Components can also be dissolved. In another example, the solvent is applied to the skin They may also be selected to exhibit cosmetic effects such as emollient properties when used. useful here Examples of suitable solvents include -hydric alcohols (especially lower-hydric alcohols) and polyhydric alcohols. There are kohl and mixtures thereof. Water may also be included as part of the solvent. deer However, the solvent usually contains water at a level of up to about 5% by weight of the final composition.

Examples of solvents utilized in the present invention include liquid polyethylene glycol (e.g. ethylene glycol, triethylene glycol), liquid polypropylene glycol (e.g. dipropylene glycol, tripropylene glycol), liquid poly Propylene polyethylene glycol copolymer, water, ethanol, n-propaz alcohol, n-butanol, t-butanol, 2-methoxyethanol, 2-ethoxyethanol diethanol, ethylene glycol, 1゜2-propylene glycol, 1,3- Propylene glycol, 1,4-butylene gelicol, 1,2-butylene glycol alcohol, isopropanol, isobutanol, diethylene glycol monomethyl ether ether, diethylene glycol monoethyl ether, 1,3-butylene glycol 2,3-butylene glycol, 2,4-dihydroxy-2-methylpentane , trimethylene glycol, glycerin, 1,3-butanediol, 1,4-butanediol Tandiol etc. and mixtures thereof. The polyethylene glycol used here Coal, polypropylene glycol, polypropylene polyethylene glycol Polymers include alkyl ether derivatives of these compounds (e.g. ethyl, propylene). and butyl nityl derivatives). An example of such a compound is PPG-5- Polypropylene polyethylene glycol copolymer such as BLETH-7 It is a polymer.

These solvents are described, for example, in Schampet et al., published May 21, 1985. U.S. Pat. No. 4,518.582 and Lu, published May 2, 1984. Described in detail in European Published Application No. 107.330 of ebbe et al. is also incorporated herein for reference. The preferred solvent for use here is liquid polyester. Ethylene glycol, liquid polypropylene glycol, liquid polypropylene glycol Liethylene glycol copolymer, propylene glycol, 1,3-butylene Recall, 2,4-dihydroxy-2-methylpentane (sometimes hexylene glycol) koal) and mixtures thereof. Particularly preferred solvents are Pyrene glycol, dipropylene glycol, tripropylene glycol, tri- There are ethylene glycol, hexylene glycol and mixtures thereof.

gelling agent stabilizer This composition is effective for increasing the stability of gelling agents in acidic environments in antiperspirant compositions. Contains an amount of gelling agent stabilizer as an essential ingredient. Generally, the composition is approximately 0.05 to about 5%, preferably about 0.1. ~about 3%, more preferably about 0.5~ Contains about 2% stabilizer.

Gelling agent stabilizer is C-C alkyl dicarboxylic acid, C-C alkyl monocarboxylic acid and basic metal salts of substituted and unsubstituted benzoic acids. C-C alkylcarboxylic acid The alkyl group of the salt and C-C alkyl monocarboxylate should be saturated and unsubstituted. It is possible. Gelling agent stabilizers useful herein range from about 3.8 to about 6.5 at ambient temperature, preferably or a basic metal salt of a weak acid having a pKa of about 3.8 to about 6.0. This game The stabilizer stabilizer is further characterized by the absence of amino and amide functional groups. The stabilizer is be at least partially solubilized in antiperspirant compositions to neutralize strong acids present. must be in good condition. Such strong acids are typically solvents or gelling agents. present as residual impurities in or formed from antiperspirant actives. whatever Without being limited to any particular theory, the presence of strong acids in gel sticks is Even a small amount of dibenzylidene alditol together with water can cause the decomposition of the gelling agent. It is thought to be a mediator. This stabilizer neutralizes such strong acids and converts them into weak acids through a reaction. Forms metal salts of strong acids.

These weak acids are poor proton sinks and can significantly destabilize the gelling agent. I can't imagine that. The exact level of solubilizing stabilizer is determined by the effective amount that will prevent the decomposition of the gelling agent. It is unimportant as long as it exists in the way. The high stability of the composition is due to the gel stability of the present invention. over time by comparing products obtained with the agent versus products obtained without it. Can be done. For example, in high performance (pressure) liquid chromatography (HPLC) Quantitative analysis of gelling agents in compositions, comparative hardness of gels and gel conversion to liquid state A variety of suitable analytical methods are known in the art, including measurements. These measurements are This can be accelerated by increasing the storage temperature of the product. Stabilizers are beneficial throughout the antiperspirant composition. It is preferable to have a wide distribution.

For transparent or translucent antiperspirant gel stick compositions, the gel present in the composition The stabilizer should be sufficiently soluble in the composition to minimize light refraction. be.

For opaque antiperspirant gel stick compositions containing antiperspirant actives in particulate form , the stabilizer need only be partially soluble in the composition, but not completely soluble in the composition. Stabilizers that are soluble in are preferred.

Suitable salt-forming cations include sodium, potassium, lithium, and magnesium. , calcium and zinc.

Sodium, potassium, magnesium and calcium are preferred, sodium, More preferred are potassium and calcium. Potassium and sodium are most preferred stomach.

C-C dicarboxylic acid salts and C-C monocarboxylic acid salts useful as gelling agent stabilizers herein. Examples of phosphate salts include conolinate, glutarate, adipate, hexanoate, and hexanoate. There are putanoates, octanoates and mixtures thereof.

More specific examples of C6-08 monocarboxylic acid stabilizers include n-hexanoate, There are n-hebutanoates and n-octanoates.

Examples of unsubstituted and substituted benzoic acid stabilizers are benzoate (unsubstituted) and benzoic acid. There are salt derivatives (substitutions).

Substituted benzoates include monohalogen-, mono-, di- and trihydroxy-, methyl and ethyl- and mono- and dimethquine-substituted derivatives. Benzoic acid derivative ingredient Examples include 3-fluorobenzoate, 3-hydroxybenzoate, 2-methyl Benzoate, 4-bromobenzoate, 4=chlorobenzoate, 2,5-dimethyl Benzoate, 2-methoxybenzoate, 3-methoxybenzoate, 4-fluoro Benzoate, 2,4-dimethylbenzoate, 3-methylbenzoate, 3,5-dimethylbenzoate Methylbenzoate, 3.4.5-trihydroxybenzoate, 4-ethylbenzoate acid salts, 4-methylbenzoate and 3,4-dimethylbenzomonochloride. benzoin The substituents substituted on the acid must not change the IIKI of the corresponding acid outside the above range, and Do not allow benzoate to become off-flavored. In addition, substituted benzoates are present in the composition. It must be compatible with other ingredients and suitable for application to the skin.

Preferred stabilizers are unsubstituted benzoates, conolinates and octanoates. Cheap Particularly preferred are the zoate and octanoate salts, especially their sodium and potassium salts. stomach.

Optional ingredients In addition to antiperspirants, the compositions of the present invention may alter the physical characteristics of the composition or Other optional ingredients that serve as "active" ingredients when deposited in - may also be included. child All optional components useful herein are described in the following documents, which are incorporated herein by reference: U.S. Pat. No. 4.04 to Hsnau, issued September 20, 1977. No. 9.792; Btckme7e+ et al. issue dated March 27, 1984. May Nada Patent No. 1.164,347, published August 29, 1984. European Patent Application No. 117.070: Ge+ia,’Formulation of 5tick Antipers pirants and Deodorants’ (Stick antiperspirants and deodorant prescription).

Cosme+ic+ & Toi1et+ie+, 99:55-60 (198 4).

The particular inactive ingredients that are useful will depend on the characteristics desired in the particular stay-took composition. Exists. Such ingredients include, for example, emollients, humectants, and hardening agents (e.g. waxes), fillers and particulate matter, colorants, fragrances and emulsifiers.

“Particulate matter” as used here refers to particles that not only do not dissolve in the composition ingredients, but also stick to them. materials, including colloidal dispersions, that do not melt during the production of

Compositions of the present invention may contain from about 1% to about 40% of one or more emollients. a Ethyl, isopropyl and n-butyldipic, phthalic and monocuccinic acids These emollients, such as esters, have intermediate polarity. Emollients like this Preferred examples include di-n-butyl phthalate, diethyl sebacate, and adipic acid. diisopropyl and ethyl carbomethyl phthalate, all of which are reference Lucddert, dated August 30, 1977, is hereby incorporated by reference. No. 4,045,548 to et al. Other useful skin The softener is C-C alcohol benzoate [Finetex Co., Ltd. (Fine +et, Inc., commercially available as Finsolv. Ru. Useful emollients include fatty acids such as cetyl and stearyl alcohol. There are also alcohols, which (if used) preferably range from about 1% to about 10%; is preferably present at a level of about 1% to about 5%. The composition of the present invention non-polar emollients such as oils, non-polar non-volatile emollients and mixtures thereof; It may also contain agents. The term “volatile” as used here refers to It relates to substances that have a vapor pressure of about 300 degrees.

Volatile silicone oils useful in the cosmetic stick compositions of the present invention range from about 3 to about 9, preferably from about 3 to about 9. Cyclic or linear polydimethylsiloxane preferably having about 4 to about 5 silicon atoms. It is preferable that The following formula is the antiperspirant stick composition disclosed herein: Useful cyclic volatile polydimethylsiloxanes are shown below: In the above formula, n is about 3 to about 7. Linear polydimethylsiloxane has about 3 per molecule ~ has about 9 silicon atoms and has the following general formula: (C113) 35i-0-[Si (C113) 2-0. −5i(C H3) 3 In the above formula, n is about 1 to about 7. Linear volatile silicone materials are usually 2 The source material typically has a viscosity of about 5 centistokes or less at 5°C; It has a viscosity of 0 centistokes or less. The description of various volatile silicone oils is T. odd et al.'Volatile 5ilicone Fluids fat C osme+ic++ (volatile silicone liquid for cosmetics), Cosmetic & Toilel+ies, 91:27-32 (1976), the disclosure of which Incorporated herein for reference.

Examples of preferred volatile silicone oils useful herein include Dow Corning (Do t CoCo1n1n 344, Dow Corning 345 and Dow Corning 200 (manufactured by Dow Corning): Silicone 7207 and Silicone 7158 [Manufactured by Union Carbide Corp.] ;5F1202 (General Electric +icj); 5WS-03314 (manufactured by SW Silicones) .

Nonvolatile silicone oils useful as emollient materials include polyalkylsiloxanes. , polyaryl siloxanes and polyether siloxane copolymers. here Essentially non-volatile polyalkylsiloxanes useful in Polydimethylsiloxane having a viscosity of 5 to about 100,000 centistokes There is. Preferred non-volatile emollients useful in the present compositions include from about 2 to about 4. There is a polydimethylsiloxane with a viscosity of 0.00 centistokes. like this For polyalkylsiloxanes, VISCXIL series (GENE manufactured by Ral Electric Co.) and Dow Corning 200 series (manufactured by Dow Co.) (manufactured by Ning Co., Ltd.). As a polyalkylarylsiloxane, it is about 15 at 25℃. There is a polymethylphenylsiloxane having a viscosity of ~65 centistokes. . These include, for example, 5F1075 methyl phenyl liquid (General Electric Company) (manufactured by Dow Corning) and 556 Cosmetic Grade Fluid (manufactured by Dow Corning). Wear. Useful polyether siloxane copolymers include, for example, about 12 Polyoxyalkylene ether with a viscosity of 00 to 1500 centistokes There are copolymers. Such liquid is 5F1066 organosiloxane surfactant. (manufactured by General Electric Company). polysiloxane ethylene Glycol ether copolymers are preferred copolymers for use in the present compositions.

The compositions of the present invention may also contain processing aids. These ingredients are in the gel form of the composition It acts to reduce the formation temperature or to reduce the melting temperature of the gelling agent. child Examples of substances such as those published in the publication dated January 12, 1988, which are incorporated herein by reference. No. 4,719,102 to Randhaya et al. particularly propylene carbonate, butyrolactone, caprolactone and mixtures thereof. There is. More preferred processing aids include the aforementioned solvents (e.g. -hydric and polyhydric alcohols) A co-solvent used in combination with C-C a substituted at the 3-position of the heterocycle. 2-oxazolinone compounds having alkyl group or mixtures of such compounds. be. This cosolvent should be miscible with the solvent. Gelling agents also reduce the processing temperature of the composition. It should be more soluble in the co-solvent than in the above-mentioned solvent in order to make it less soluble. 2-Oki The sazolidinone cosolvent typically ranges from about 0.5% to about 40% by weight of the composition, preferably is present in the composition at a level of about 1 to about 25%, more preferably about 5 to about 15%. Ru. The weight ratio of the -hydric and polyhydric alcohol solvent to the above 2-oxazolidinone is preferred. The ratio is preferably about 1:1 to about 50:1, more preferably about 3:1 to about 20=1, and the gel The weight ratio of the oxidizing agent to the 2-oxazolidinone is preferably from about 0.05.1 to about 2.0. 1, more preferably about 0.1:1 to about 11.

Generally, 2-oxazolidinone compounds have the formula In the above formula, the group R at position 3 is C-C alkyl, preferably C-C2 alkyl, more preferably C-C2 alkyl. or C1 (ie, methyl). Preferred compounds have hydrogen in the 4 and 5 positions , 3-(C-C'alkyl)-2-oxazolidinone. 3- (C-C alkyl)-2-th xazolidinone is more preferred. 3-methyl-2- Most preferred are oxazolidinones. The compound has 4 heterocycles instead of hydrogen. and may have a substituent located at the 5-position. Preferably, if used, Such substituents include lower chain alkyl, such as C-C alkyl, preferably C-0 2alkyl, more preferably methyl. Makes the compound immiscible with other solvents None or less than in the case of -hydric and polyhydric alcohol solvents (addition of gelling agent to it) Other substituents may also be present that do not reduce solubility. Additionally, the compound remains stable against degradation during processing and under typical storage and use conditions. There must be.

Compositions of the invention may also contain from about 0.5% to about 10% inert filler materials. suitable A suitable filler material is colloidal silica [e.g. +Cab-0-3il manufactured by Corp.), clay (e.g. (e.g. bentonite), hydrophobic (quaternized) clays, silica/alumina thickeners, tal Silicate powders such as aluminum silicate and magnesium silicate; There are starch, metal stearates and mixtures thereof. makeup stick nakayasu 1987, incorporated herein by reference. No. 4,126,679 issued to DavT et al. Disclosed in the details. Compositions of the present invention are known in the art at levels of about 0.1 to about 5%. It may also contain well-known flavoring agents, emulsifying agents and coloring agents.

In addition to the antiperspirant actives, the antiperspirant sticks of the present invention are capable of being deposited on human tissue. One or more additional ingredients may also be included in safe and effective amounts to enhance the effect. This kind of life Active ingredients include astringents, bacteriostatic agents, fungistatic agents, pigments, dyes, colorants, fragrances, and skin softeners. UV absorbers, UV absorbers and mixtures thereof. These ingredients are included in the formulation of the present invention. must be stable. These “safe and effective” amounts of active ingredients are for human use. is the amount that exhibits the desired effect at a reasonable benefit/risk ratio. Of those useful in the present invention In October 1980, various active ingredients are incorporated herein for reference. As described in Yaha+ U.S. Pat. No. 4,226.889, issued Ru.

The present invention provides an antiperspirant gel stick composition in which the decomposition of the gelling agent is reduced during processing. A method for manufacturing the same is further provided. In addition, improved gel stability of the final composition is also obtained. .

More specifically, the solvent, substituted or unsubstituted dibenzylidene aldi Antiperspirant gel stick compositions containing tall gelling agents and antiperspirant actives An improved manufacturing method is provided, which involves gelation at high temperatures to form a solution. by dissolving the gelling agent in a solvent and then cooling the solution to form a gel. , in which case improvement is achieved by adding an effective amount of gelling agent stabilizing agent to increase the stability of the gelling agent. The stabilizer has a temperature of about 3.8 to about 6.0 mm at ambient temperature. A basic metal salt of an acid having a IIKk of 5, the salt having a C-C alkyl radical. carbonate, C-Cs alkyl monocarboxylate, substituted and unsubstituted benzoate and their the gel stabilizer is selected from the group consisting of mixtures thereof, in which case the gel stabilizer is amino or amino; It has no functional groups.

Preferably, the gel stabilizer is applied before heating the solvent and dissolving the gelling agent. Preferably, it is added to the solvent prior to addition of the antiperspirant active to the solvent. Regarding this processing The term "solvent" as used includes a solvent capable of dissolving the gelling agent or a solvent capable of dissolving the gelling agent. Additives, including processing aids that can be present in dissolved form and can be used as co-solvents, such as those described above. It includes all kinds of substances.

This process creates an antiperspirant gel stick composition with improved gel storage stability. I can provide things. In addition, this process provides improved gelling agent stability and This in turn provides an improved initial gel stick composition and improved gelling agent efficacy. can do. This process involves, for example, cooling and gelling after packaging. The composition may be kept at high temperatures, e.g., above the gel point, in anticipation of forming Particularly beneficial under the required conditions.

In a preferred process, the antiperspirant gel stick composition: (a) from about 0.5 to about 10% by weight of the final composition as described above, substituted or unsubstituted; about 0.0 of the gelling agent, solvent for the gelling agent and the final composition. Prepare a solution containing from 5% to about 5% by weight of a gelling agent stabilizer (the stabilizer is a solvent). and at least partially soluble in the solution of the gelling agent); (mixing the b1 antiperspirant active into the above solution; and (C) forming a gel. The gel is prepared by cooling the solution in order to It has an average penetration value of about 60 to about 200 in I/10 mm at ambient temperature.

Preferably, the amount of solvent, gelling agent stabilizer and antiperspirant active in the final composition is Levels and selections are as described above.

Generally, a monohydric or polyhydric alcohol or alcohol is preferably used to dissolve the gelling agent. requires heating the solvent containing the mixture to about 70 to about 150°C. .

Consistent with the above, the compositions of the present invention may be prepared by techniques commonly known to those skilled in the art. good. Such techniques are incorporated herein for reference. 1cks Formalar7' (gel and stick formula collection), Cosmet ics & Toilet Hies.

99 Near 7-84 (1984). Antiperspirant actives and optional ingredients is added, the solution is poured into stick molds. A solid gel forms upon cooling.

Since stick compositions solidify rapidly when cooled, it is necessary to apply the composition while maintaining high temperatures. Care should be taken when mixing and processing.

The gel-type antiperspirant stick composition of the present invention can be used in a conventional manner. Specifically, that The composition is particularly effective for areas of the body that are prone to sweating (e.g. the armpit or axillary area). Prevent and/or control sweating dampness by topically applying an amount of the composition at least once a day. used to control

The following non-limiting examples illustrate the compositions, methods of manufacture, and methods of use described in this application. .

Example I-II+ Opaque antiperspirant gel stick compositions are exemplified in these examples. The composition is below Manufactured according to the operation.

Phase A - Weigh the water into a beaker. Sodium benzoate or sodium octanoate Add the gel stabilizer solution and stir at room temperature until dissolved to form a gel stabilizer solution.

Gel stabilizer solution and Phase A solvent (apply only dipropylene glycol in Phase A part) 3-methyl-2-oxazolidinone) in a refluxing condenser. Add to a 3 neck round bottom flask equipped with a capacitor, thermometer and magnetic stir bar. Adjustment resistance Place the flask in a heating mantle connected to a vessel.

Weigh the gelling agent and add it to the flask. Wait until the gelling agent is completely dissolved. from about 110°C to about 132°C for Example I, from about 120°C to about 142°C for Example 11, and from about 120°C to about 142°C for Example 11. For II+, heat the flask to about 90 to about 110°C with stirring. Do not stir Keep the temperature within the applicable temperature range.

Phase B - Weigh out the dipropylene glycol and ethanol in Phase B and place in a reflux condenser. Add to a round bottom flask equipped with a thermometer, thermometer and magnetic star. Anti-perspirant activity Add sex agent and mix until well dispersed. On the other hand, the mix is a high shear mixer You can go there. Fumed silica, fumed aluminum oxide as applicable and sodium heptanosinate to a flask and heated it connected to a rheostat. Place the flask in a mantle and heat from about 65 to about 90° C. for Example I and about 90° C. for Example II. The flask was heated at about 70 to about 95°C, and in the case of Example I11, about 45 to about 70°C, with stirring. Heat the rice. Maintain the temperature within the applicable temperature range while stirring.

Add Phase B to Phase A flask and mix until uniform. Mixed liquid in canister - Pour inside and loosely cover to contain volatiles. Chamber composition Cool until warm.

Ingredient example # (weight%) Sodium benzoate 1.00 - 2.00 Sodium octoate -1,0 0- Water 2.0G 2.0G 2. H Dipropylene glycol 15.00 - 41.50 Propylene glycol 15.00 42.00 -3-methyl-2-oxazolidinone 10.00 - 5.00 di(m-fluorobenzylidene) sorbitol 3.00 3.0 0-Dibenzylidene sorbitol (non-positioned button-3,50 phase B Dipropylene glycol 27.0G 30.00 2G, 00 Ethanol 1 0.00 - 10.00 Zirconium aluminum trichlorohydrex G ly (ZAG)” 15.00 15.0G 15.00 Humid Silica **1.67 1.00 1.00 Humid aluminum oxide *** 0.3 0--Diethyl sebacate-5,0- 8Westwood Chemical Company p, ) (Middletown, NY, USA) to Wes L'Ole (WESTC [ 1 LOR) zR30B Available as DM powder 0 Cabot Co. (Truscola, I L, USA) as CABOSIL+**8 Degutsusa (Degussa, Inc.) (Tebo, NJ.

Available as Aluminum Oxide C from USA) Opaque stick has excellent gel properties It is storage stable and has excellent antiperspirant efficacy when applied to the axillary area. show.

Example IV-Vl Transparent antiperspirant gel stick compositions are exemplified in these examples. The composition is prepared by the following procedure. Manufactured according to the regulations.

Phase A - Weigh the water in the Phase A portion and add it to a beaker. Add gel stabilizer and dissolve Stir at room temperature until forming a gel stabilizer solution.

Apply gel stabilizer solution and remaining Phase A solvent to reflux condenser and thermometer. and into a 3 neck round bottom flask equipped with a magnetic stir bar. A rheostat connected to Place the flask in a heat mantle.

Weigh the gelling agent and add it to the flask. Wait until the gelling agent is completely dissolved. from about 110°C to about 132°C for Example 1V, from about 120°C to about 142°C for Example V, and For Ml, heat the flask at about 90 to about 110°C with stirring. stirring Keep the temperature within the applicable temperature range.

Phase B - Weigh and add propylene glycol to the flask. Added antiperspirant actives Well, mix until it's homogeneous. Add water from Phase B part. high energy mixer Mix at a temperature of 45°C to 85°C until the activator is dissolved. To do so. Degas.

Apply ethanol and silica with solubilizing activator to a reflux condenser, temperature Add to a round bottom flask equipped with a meter and magnetic stir bar. Heating connected to a rheostat Place the flask in a mantle and heat at about 65°C to about 90°C for Example +V; The flask was heated with stirring at about 70°C to about 95°C and from about 45°C to about 70°C for Example Vl. Heat.

Apply with stirring and keep within temperature range.

Add Phase B to Phase A flask and mix until uniform. Mixed liquid in canister - Pour inside and loosely cover to contain volatiles. Chamber composition Cool until warm. The composition is transparent or translucent.

Ingredient example # (weight%) Sodium benzoate 1.00 - 2.00 Sodium octoate -1,0 0- Water 2. GO2,002,00 Dipropylene glycol 43.00 - 46.50 Propylene glycol -59.0G -3-methyl-2-oxazolidinone 10. H-5,00 ce Diethyl bacate -5,00- Di(m-fluorobenzylidene) sorbitol 3.00 3.00-diben Zylidene sorbitol (unsubstituted) --3,5Q phase B Ethanol 10.00 - 10. (10 propylene glycol 15.θ0 15.00 15. Ofl aluminum chlorohydrate” 13.50 13. 50 13.50 humid silica" 1.00 - 1.00 water 1.50 1.50 1.50 1 Westwood-Chemical Co. (Middletown, NY).

Obtained as Westchlor DM 200 powder from Cahot Co., Ltd. (USA). Obtained as Cabosil from Cola, IL, USA) The stick has excellent gel properties, is storage stable and applied to the axillary area Sometimes exhibits excellent antiperspirant efficacy.

Continuation of front page (81) Designated countries EP (AT, BE, CH, DE.

DK, ES, FR, GB, GR, IT, LU, MC, NL, SE), 0A (BF , BJ, CF, CG, CI, CM, GA, GN, ML, MR, SN, TD, TG. ), AU, BB, BG, BR, CA, C3, FI, HU, JP.

KP, KR, LK, MG, MN, MW, No, PL, R○, RU, SD

Claims (10)

[Claims] 1. (a) 0.5-35% antiperspirant active; (b) substituted and unsubstituted dibenzylides; 0.5 to 1 gelling agent selected from the group consisting of alditol and mixtures thereof 0%, preferably 2-5%; (c) 5-98% of the solvent for the gelling agent, preferably 60-80% (the above solvent is a monohydric or polyhydric alcohol or a mixture thereof) and (d) gelling agent stabilizer 0.05 to 5% by weight, preferably is 0.1 to 3% (the above stabilizer is suitable for acids with pXa of 3.8 to 6.5 at ambient temperature). is a basic metal salt; the salt is at least partially soluble in the composition; Fixing agent is C4-C6 alkyl dicarboxylic acid salt, C6-C8 alkyl monocarboxylic acid the gelling agent stabilizer selected from the group consisting of salts and substituted and unsubstituted benzoates; has no amino or amide functionality); A solid antiperspirant composition in the form of a gel stick having an acidic pH, comprising: 2. The stabilizer is unsubstituted benzoate, octanoate, succinate and mixtures thereof. The solid antiperspirant according to claim 1, which is a salt selected from the group consisting of. 3. The gelling agent is substituted or unsubstituted dibenzylidene sorbitol or a mixture thereof. compounds, preferably di(m-fluorobenzylidene)sorbitol, di(m-chlorobenzylidene) Lobenzylidene) sorbitol or a mixture thereof. solid antiperspirant compositions. 4. Solvent is propylene glycol, dipropylene glycol, tripropylene glycol Recall, triethylene glycol, hexylene glycol and mixtures thereof 4. A solid antiperspirant composition according to claim 1, 2 or 3 selected from the group consisting of. 5. A solid foam according to claim 1, 2, 3 or 4, wherein the antiperspirant active is in solubilized form. Anti-perspirant composition. 6. 2-Oxazolidinone having a C1-C4 alkyl substituent at the 3-position of the heterocycle 0.5-40% of the compound or mixture thereof, preferably 3-(C1-C2 alkyl) - Claim 1, 2, 3, 4 or 5 further comprising 5 to 15% of -2-oxazolidinone. A solid antiperspirant composition as described. 7. An effective amount of the solid antiperspirant composition according to claim 1, 2, 3, 4, 5 or 6. A method for the prevention and control of sweat dampness in humans, consisting of application to the armpit area of the body. 8. With acidic pH, solvent, substituted or unsubstituted dibenzylidene alditol gelation An improved antiperspirant gel stick composition containing an antiperspirant and an antiperspirant active. A manufacturing method, The method includes dissolving the gelling agent in the solvent at an elevated temperature to form a solution; cooling the solution to form a gel, in which case the above method An effective amount of gelling agent stabilizer may be incorporated into the above solvent to enhance gelling agent stability. The gelling agent stabilizer has a pKa of 3.8 to 6.5 at ambient temperature. C4-C6 alkyl dicarboxylate, C6-C8 consisting of alkyl monocarboxylic acid salts, substituted and unsubstituted benzoic acid salts and mixtures thereof. the gelling agent stabilizer does not have an amino or amide functional group; A method consisting of. 9. Has an acidic pH: (a) 0.5-10% by weight of the final composition of substituted or unsubstituted dibenzylidene aldi Tall gelling agent, solvent for the gelling agent and 0.05-5% gel by weight of the final composition Prepare a solution containing a stabilizing agent (the stabilizer is at least partially incorporated into the solution). is a salt of an acid that is soluble in water and has a pKa of 3.8 to 6.5 at ambient temperature; The salt is C4-C6 alkyl dicarboxylate, C6-C8 argyl monocarboxylic acid selected from the group consisting of salts, substituted and unsubstituted benzoates and mixtures thereof; the gelling agent stabilizer does not have amino or amide functionality); (b) mixing an antiperspirant active into the solution; and (c) forming a gel. cool the solution to allow the gel to reach ambient temperature; antiperspirant gel having a flat penetration value of about 60 to about 200 in 1/10 mm increments. Method for producing stick composition. 10. A product manufactured by the method according to claim 8 or 9.