DE10317751A1 - Anhydrous antiperspirant composition in semisolid to solid form includes a thickener system comprising hydroxyoctacosanyl 12-hydroxystearate and an inorganic and/or polymeric thickener - Google Patents

Abstract

Anhydrous antiperspirant composition in semisolid to solid form comprises an antiperspirant, a volatile carrier, a nonvolatile emollient and a thickener system comprising hydroxyoctacosanyl 12-hydroxystearate and an inorganic and/or polymeric thickener. An independent claim is also included for producing the antiperspirant composition by melting the waxy components together with the liquid components, stirring in the powder components and cooling the mixture without further stirring.

Description

The The present invention relates to a cosmetic antiperspirant product, which is an essentially anhydrous, semi-solid to solid formulation is and evenly applied with the help of an appropriate dispenser can be.

Usually antiperspirants are offered in diverse product forms, in Europe scooters, pump atomizers and aerosols dominate, in the United States, Central and South America Pencils. They are both water-free (suspensions) and water-containing Products (hydro-alcoholic formulations, emulsions) are known. In Europe, anhydrous semi-solid to solid products (e.g. so-called soft solids or pens) increasingly consumer acceptance win. Soft solids are wordings that have a semi-solid consistency and by light pressure or Shear become less viscous and therefore by an appropriate Applicator can be well distributed on the skin.

Anhydrous Semi-solid formulations are characterized in that one or several solid particulate antiperspirants in a carrier are suspended. The carrier consists of at least one or more volatile oils, a or more non-volatile Emollients and one or more thickeners. Raw materials with thickening Properties are, for example, waxes and organic or polymeric Materials such as clays, silicates and polysaccharides.

Anhydrous semi-solid products are highly effective and a powdery, not sticky, velvety-silky skin feeling. The tendency to form white residues is disadvantageous. This is due to the selection and concentration of raw materials, especially thickeners and To prevent emollients.

• – Antitranspirantformulierungen mit hohen Gehalten an Tonerden ( US 4526780 , US 5019375 ) oder Kieselsäuren ( US 4937069 , US 5069897 , DE 690 05 029 ) mit einem Gehalt vorzugsweise größer 2%, Nachteil ist das unerwünschte Weisseln (Bildung von weißen Rückständen auf der Haut),
• – Einsatz von Silikon-Elastomeren (quervernetzte Silikonpolymere) (WO 9800097, WO 9951192) oder Silikon-Latex Copolymeren (WO 9804236)
• – Einsatz von Verdickerkombinationen auf Basis von Triglyceriden wie z.B. Tribehenin ( US 5718890 , WO 9717941, WO 0187251), auch zusammen mit anorganischen Verdickern (WO 9851272),
• – Verwendung von hydriertem Rizinusöl in Kombination mit Paraffin (WO 9916410) und in Kombination mit Stearylalkohol und Dimethiconcopolyol ( US 5531986 )
• – Antitranspirantgelzubereitungen mit Hydroxystearinsäureestern ( US 5,552,136 ), wobei ein zusätzlicher Gelbildner erforderlich ist.

The preparation of water-free preparations is possible in various ways, which are described below.

• - antiperspirant formulations with high levels of alumina ( US 4526780 . US 5019375 ) or silica ( US 4937069 . US 5069897 . DE 690 05 029 ) with a content preferably greater than 2%, disadvantage is the unwanted whitening (formation of white residues on the skin),
• - Use of silicone elastomers (cross-linked silicone polymers) (WO 9800097, WO 9951192) or silicone-latex copolymers (WO 9804236)
• - Use of thickener combinations based on triglycerides such as tribehenin ( US 5718890 , WO 9717941, WO 0187251), also together with inorganic thickeners (WO 9851272),
• - Use of hydrogenated castor oil in combination with paraffin (WO 9916410) and in combination with stearyl alcohol and dimethicone copolyol ( US 5531986 )
• - antiperspirant gel preparations with hydroxystearic acid esters ( US 5,552,136 ), whereby an additional gel former is required.

task The present invention is therefore, anhydrous semi-solid formulations to develop, which are characterized by a high heat stability, a pleasant feeling on the skin and not to form white ones Residues tend.

• – mindestens ein Antitranspirantwirkstoff,
• – mindestens ein flüchtiges Trägermaterial,
• – mindestens ein nichtflüchtiges Emollient,
• – mindestens einen anorganischen und/oder polymeren Verdicker und
• – 12-Hydroxystearinsäure-hydroxyoctacosanylester (CTFA Bezeichnung: Hydroxyoctacosanyl Hydroxystearate).

The water-free formulations according to the invention contain

• - at least one antiperspirant active ingredient,
• - at least one volatile carrier material,
• - at least one non-volatile emollient,
• - At least one inorganic and / or polymeric thickener and
• - 12-Hydroxystearic acid hydroxyoctacosanyl ester (CTFA name: Hydroxyoctacosanyl hydroxystearate).

In addition, in the formulation solid emulsifiers, preferably from the group nonionic surfactants, and other cosmetic auxiliaries and additives how to contain perfumes.

The For the purposes of the invention, formulation is considered to be anhydrous if no water is added to the preparation of the preparation and Water content less than 5 wt .-%, preferably less than 2 wt .-% water and especially less than 1% by weight, with a residual amount of water inevitably introduced by the raw materials used becomes.

The invention also relates to a process for the preparation of the formulations according to the invention, the wax-like components being melted together with the liquid components zen, then the powdered components are incorporated with stirring and the mass is cooled without further stirring.

The The following list of antiperspirant active ingredients which can be used advantageously is not meant to be limiting in any way his:

Aluminum salts

• - aluminum salts such as aluminum chloride AlCl ₃ , aluminum sulfate Al ₂ (SO ₄ ) ₃
• Aluminum chlorides of empirical empirical formula [Al ₂ (OH) _m Cl _n ], where m + n = 6
• - Aluminum chlorohydrate [Al ₂ (OH) ₅ Cl] × H ₂ O standard Al complexes: Locron P (Clariant), Micro-Dry (Reheis), ACH-331, (Summit), Aloxicoll PF 40 (Giulini). Activated Al complexes: Reach 501 (Reheis), AACH-324 (Summit)
• - Aluminum sesquichlorohydrate [Al ₂ (OH) _4.5 Cl _1.5 ] × H ₂ O standard Al complexes: Aluminum sesquichlorohydrate (Reheis), ACH-308 (Summit), Aloxicoll 31 L (Giulini) Activated Al complexes: Reach 301 (Reheis)
• Aluminum dichlorohydrate [Al ₂ (OH) ₄ Cl ₂ ] × H ₂ O

Aluminum-zirconium salts

• - Aluminum / zirconium trichlorohydrex glycine [Al ₄ Zr (OH) ₁₃ Cl ₃ ] × H ₂ O × Gly standard Al / Zr complexes: Rezal 33GP (Reheis), AZG-7164 (Summit), Zirkonal P3G (Giulini) activated Al / Zr complexes: Reach AZZ 902 (Reheis), AAZG-7160 (Summit), Zirkonal AP3G (Giulini)
• - Aluminum / zirconium tetrachlorohydrex glycine [Al ₄ Zr (OH) ₁₂ Cl ₄ ] × H ₂ O × Gly standard Al / Zr complexes: Rezal 36G (Reheis), AZG-368 (Summit), zirconal L435G (Giulini) activated Al / Zr complexes: Reach AZP 855 (Reheis), AAZG-7167 (Summit), Zirkonal AP4G (Giulini)
• - Aluminum / zirconium pentachlorohydrex glycine [Al ₈ Zr (OH) ₂₃ Cl ₅ ] × H ₂ O × Gly Standard Al / Zr complexes: Rezal 67 (Reheis), Zirkonal L540 (Giulini) Activated Al / Zr complexes: Reach AZN 885 (Reheis)
• - Aluminum / zirconium octachlorohydrex glycine [Al ₈ Zr (OH) ₂₀ Cl ₈ ] × H ₂ O × Gly

As well can be beneficial but also be glycine-free aluminum / zirconium salts.

The Antiperspirant agents are used in the water-free according to the invention Semi-solid to solid formulations in powder form in one quantity from 5 to 35% by weight, preferably from 10 to 25% by weight. Antiperspirant agents with a fine degree of grinding are advantageous, d. H. with an average particle diameter of maximum 50 μm. Preferably in 97% of the particles the diameter should be <50 μm degrees of grinding are very preferred, in which 95% of the particles smaller than 10 μm are.

Advantageous can also be the use of AT salt suspensions or gels, where powdered existing aluminum and aluminum / zirconium salts dispersed in various oils Tobe offered.

Hydroxystearinsäureester

According to the Thickener 12-hydroxystearic acid hydroxyoctacosanyl ester (CTFA name: Hydroxyoctacosanyl Hydroxystearate), where the Use concentration advantageously in the range from 6 to 15% by weight, is in particular in the range 6 to 10% by weight. This thickener is for example under the trade name Elfacos C26 from the company Akzo Nobel offered.

Inorganic / polymeric thickener

Thickeners according to the invention from the group of inorganic and / or polymeric thickeners are silicas, clays and polysaccharides. These substances improve the strength and the oil-binding capacity of the semi-solid to solid formulations. Silicas and polysaccharides, in particular starches and celluloses, are preferred. In the case of celluloses white powder are particularly fine fiber, suitable in which the particle size is preferably less than 100 microns, for example, cellulose grades with the trade name Carecel ^® from CFF GmbH.

The Total content of inorganic and polymeric thickeners should have a share of 0.5 to 10% by weight of the total preparation. According to the invention, the proportion of at least one inorganic thickener is in the range from 0.5 to 4% by weight, in particular in the range from 0.75 to 3% by weight. For the polymer The proportion of thickener is based on the total preparation 1 to 9% by weight, preferably 3 to 8% by weight.

The oil phase of the Preparations according to the invention consists of at least one volatile and at least one non-volatile oil (emollient).

Volatile carrier material

According to the invention the fleeting support material at least 20% by weight of the preparation (based on the total weight of the preparations). As volatile support material find one or more oils Use a substantial vapor pressure at body temperature exhibit.

Prefers become the fleeting support materials of the preparations according to the invention selected from the group of cyclic silicones, which in the context of the present Disclosure can also be referred to as "silicone oils".

wobei die Substituenten an den Siliziumatome R₁ bis R₄ die gleichen oder unterschiedliche Alkylreste und/oder Arylreste sein können. Die Ringgröße n kann dabei Werte von 3/2 bis 20 annehmen. Gebrochene Werte für n berücksichtigen, dass eine ungeradzahlige Anzahl von Siloxylgruppen im Zyklus vorhanden sein kann.Cyclic silicones to be used advantageously according to the invention are generally characterized by the following structural element

wherein the substituents on the silicon atoms R ₁ to R _{4 can be} the same or different alkyl radicals and / or aryl radicals. The ring size n can assume values from 3/2 to 20. Broken values for n take into account that there may be an odd number of siloxyl groups in the cycle.

The use of cyclomethicone with the formula [(CH ₃ ) ₂ -SiO] _n , in which n = 4, 5 or 6, in a concentration of 20 to 80% by weight, preferably of 30 to 60% by weight.

Further can the fleeting carrier also contain other volatile oils. According to the invention are in particular Hydrocarbons such as isoparaffins. Examples of isoparaffins according to the invention are isohexadecane and isododecane.

Non-volatile oils

Not volatile oils, too referred to as an emollient, serve to improve the feeling on the skin and contribute significantly to white Avoid residues.

she can come from the group of non-silicone oils.

The following Emollients are from the group of non-silicone oils Particularly suitable, the naming being in no way restrictive should: Addition products of propylene oxide to mono- or polyvalent Alcohols, e.g. B. PPG-14 butyl ether, esters liquid at room temperature, z. B. butyl stearate and esters of carbonic acid, e.g. B. Dicaprylyl carbonate and polydecene.

The not become volatile oils in the anhydrous according to the invention semi-solid formulations in an amount of 5 to 40 wt .-%, preferably from 10 to 30% by weight.

The formulations according to the invention can 0.1 to 5 wt .-% - based on the total weight the formulation - contain non-ionic surfactants (non-ionic surfactants) in solid form.

Of Another is the use of other cosmetic additives such as perfume, stabilizers, Preservatives and the like, alone or in any Combination according to the invention.

Preparations according to the invention exhibit a hardness up to 2.0 N (200 g). This can be measured by penetration force after that of Procter & Gamble determine the method described in U.S. Patent 5,552,136. there is in a texture analyzer (TA.XT2i HR from Stable Micro Systems) a conical indenter (P / 45Cx stainless steel cone 45 °) with a test speed of 20 mm / min 10 mm deep into a 23 ° C warm sample and the needed for pressing Force recorded. The maximum value, the penetration force after 10 mm, represents the hardness represents.

Especially Preparations whose hardness is less than 1.5 N (150 g) are advantageous.

The the following examples are intended to illustrate the present invention, without restricting them. The Numerical values in the examples mean percentages by weight, based on on the total weight of the respective preparations.

to Dispenser and pomade holder can be applied to the preparation as they are known in cosmetics and dermatology. In particular rotary / sliding dispenser for deodorant / antiperspirant sticks and lipsticks are great.

to Production of an anhydrous according to the invention Antiperspirant preparation are all in a first step wax-like components melted together with the liquid components and in a second step, the powdery components are incorporated with stirring. The still warm mass is cooled without further stirring, the shape of the later Product before cooling he follows.

According to the invention is considered Melting temperature selected a temperature that is not more than 5 ° C above the Melting temperature of the highest melting Component lies.

Example recipe examples 1

The Preparation has a hardness of 1.1 N (110 g).

Ex. 2

Claims (19)

Anhydrous antiperspirant preparation with semi-solid to solid form, in addition to other cosmetic additives - at least an antiperspirant ingredient, - at least one fleeting one Support material - at least a non-volatile Emollient and - on Thickener system containing: (a) 12-hydroxystearic acid hydroxyoctacosanyl ester, (B) at least one inorganic and / or polymeric thickener. Anhydrous antiperspirant preparation according to claim 1, characterized in that the hardness of the preparation is below 2.0 N (200 g), in particular less than 1.5 N (150 g). Anhydrous antiperspirant preparation after one or more of the preceding claims, characterized in that the content of 12-hydroxystearic acid hydroxyoctacosanyl ester (CTFA name: Hydroxyoctacosanyl Hydroxystearate) one of 6 to 15 wt .-% of the total amount of the preparation, in particular 6 to 10 wt .-% are advantageous. Anhydrous antiperspirant preparation after one or more of the preceding claims, characterized in that as antiperspirant active ingredients, one or more aluminum and / or Aluminum / zirconium salts are used, especially aluminum chlorohydrates and / or aluminum / zirconium chlorohydrate Anhydrous antiperspirant preparation after one or more of the preceding claims, characterized in that the antiperspirant active ingredients in powder form with a fine Degree of grinding are present. Anhydrous antiperspirant preparation after one or more of the preceding claims, characterized in that the antiperspirant active ingredient content ranges from 5 to 35 Wt .-% of the total amount of the preparation, in particular 10 to 25 wt .-% are advantageous. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that the fleeting support material a cyclic silicone oil is, especially cyclomethicone. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that the volatile content support material accounts for 20 to 80% by weight of the total preparation, in particular 30 to 60 wt .-%. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that the non-volatile Emollient PPG-14 is butyl ether and / or a polydecene. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that the content of non-volatile Emollient accounts for 5 to 40% by weight of the total preparation makes up, in particular 10 to 30 wt .-%. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that the inorganic and / or polymeric thickener the group of silicas and / or clays and / or polysaccharides. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that the polymeric thickener is starch or cellulose. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that the total content of inorganic and / or polymeric thickeners accounts for 0.5 to 10% by weight of the total preparation. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that the content of inorganic thickener from 0.5 to 4 wt .-%, makes up in particular 0.75 to 3% by weight. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that the content of polymeric thickener from 1 to 9 wt .-%, in particular Makes up 3 to 8 wt .-%. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that besides other cosmetic additives, perfume and / or Contains fragrances. Anhydrous antiperspirant preparation after one characterized in one or more of the preceding claims that they contain 0.1 to 5% by weight of nonionic surfactants in solid form. Process for the preparation of an anhydrous antiperspirant preparation according to one or more of the preceding claims, characterized characterized that the waxy components together with the liquid Components are melted, then the powdered components with stirring be incorporated and the mass is cooled without further stirring. Use of an anhydrous antiperspirant formulation according to at least one of the preceding claims for application to the human skin, especially to reduce perspiration.