Reduced textile staining of antiperspirants

Incorporating geranyl acetate and/or linalyl acetate into antiperspirant formulations addresses the challenge of stubborn yellowish stains by reducing stain intensity and improving washability, while also reducing production costs through faster homogenization times.

WO2025261645A1PCT designated stage Publication Date: 2025-12-26BEIERSDORF AG
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Patent Information

Application Number
PCT/EP2025/061652
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-18
Filing Date
2025-04-29
Publication Date
2025-12-26

AI Technical Summary

Technical Problem

Conventional antiperspirants cause stubborn yellowish stains on clothing due to the interaction of aluminum salts with skin oils and sweat, which are difficult to remove even with pre-treatment or conventional cleaning methods.

Method used

Incorporating geranyl acetate and/or linalyl acetate into antiperspirant formulations reduces the intensity of staining and improves washability by forming a cosmetic preparation that includes aluminum-containing active ingredients, such as aluminum chlorohydrate, along with non-ionic emulsifiers and polyglyceryl esters, to create an emulsion that minimizes visible residues.

Benefits of technology

The addition of geranyl acetate and/or linalyl acetate significantly reduces the intensity of yellowish stains on clothing after washing, enhancing the washability of these residues and reducing production costs by shortening homogenization times by approximately 1/3.

✦ Generated by Eureka AI based on patent content.

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Abstract

A cosmetic preparation.
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Description

[0001] Reduced fabric staining from antiperspirants

[0002] The invention belongs to the cosmetic field and relates to a cosmetic preparation which has fewer textile stains.

[0003] Cosmetic products generally serve not only to make one look beautiful and attractive, but also contribute significantly to increased self-esteem and well-being. Accordingly, a wide variety of cosmetic products are used for daily cleansing and skin care.

[0004] One category of cosmetic products is deodorants and antiperspirants, which are applied under the arms to prevent unpleasant odors. These odors are caused by the decomposition of sweat, which is itself odorless, by bacteria. Among the byproducts of this decomposition are fatty acid residues, which characterize the typical, familiar smell of sweat. Although deodorants and antiperspirants are applied to the same area of ​​skin and pursue the same goal, they differ in their technical mechanisms of action.

[0005] Antiperspirants contain antiperspirant active ingredients that serve to inhibit and reduce perspiration. Antiperspirant active ingredients containing aluminum can clog the sweat glands.

[0006] Deodorants, on the other hand, are characterized by the fact that they do not impede the flow of perspiration. Instead, deodorants are understood to be products containing specific antimicrobial agents that reduce the growth of bacteria such as Corynebacterium jeikeium or Staphylococcus epidermidis. Consequently, the decomposition of odorless sweat is reduced, resulting in fewer unpleasant odors.

[0007] Conventionally, antiperspirants and deodorants are applied to the skin either using a roll-on applicator or as a spray. Sprays include both aerosol sprays powered by a propellant and pump sprays operated by a hand pump. Depending on the application method, the cosmetic preparations vary significantly in their composition.

[0008] Many consumers complain of unwanted underarm stains on their clothing when using antiperspirants. These are often yellowish stains that can also tend to crust over. These deposits and stains are primarily caused by a complex interaction between the product, skin oils, sweat, and detergent, and are difficult to remove using conventional cleaning methods.

[0009] The appearance of the stains can vary from person to person. One cause is the aluminum salts used in most products, which act as antiperspirant agents.

[0010] These stubborn stains cannot be completely removed by washing, even with pre-treatment using stain remover, or only with great difficulty.

[0011] EP 1178775 A1 describes the use of water-soluble surfactants to improve the washability of residues from skin and clothing. It describes combinations of astringent salts with water-soluble, non-ionic surfactants, which are intended to exhibit a rapid onset of antiperspirant action and high effectiveness.

[0012] WO2010097205 A2 describes the use of surfactants in antiperspirant preparations to reduce staining or improve the washability of stains from clothing.

[0013] The fact that certain methods and preparations are known for preventing or reducing stains caused by the use of antiperspirant preparations should not obscure the ongoing need for further active ingredients or methods to improve stain formation and washability, so that consumers notice fewer stains after washing. The present invention addresses this need.

[0014] The invention is a cosmetic preparation comprising a) at least one antiperspirant, aluminum-containing active ingredient, and b) geranyl acetate and / or linalyl acetate. According to the invention, the use of geranyl acetate and / or linalyl acetate in cosmetic preparations is particularly relevant for preventing staining of clothing caused by the cosmetic preparation and / or for improving the washability of these stains. These preparations primarily comprise one or more antiperspirant, aluminum-containing active ingredients, in particular aluminum chlorohydrate.

[0015] Surprisingly, it was found that the addition of geranyl acetate and / or linalyl acetate, unlike structurally similar substances such as neryl acetate, reduces the intensity of staining on clothing caused by the aluminum chlorohydrate-containing preparation after washing.

[0016] Another surprising effect of the invention is that the combination according to the invention allows for a significant reduction in homogenization times during preparation. This reduces production costs, as less energy is required.

[0017] Surprisingly, it was found that the homogenization time was reduced by approximately 1 / 3 compared to homogenization with neryl acetate.

[0018] According to the invention, a method comprising the steps a) providing one or more components of the preparation which are not geranyl acetate and / or linalyl acetate, and optionally mixing and / or pre-homogenizing, b) adding geranyl acetate and / or linalyl acetate to the components from step a), c) optionally adding further components of the preparation and d) homogenizing the preparation.

[0019] Another object of the invention is the use of geranyl acetate and / or linalyl acetate to reduce the homogenization times of a cosmetic preparation, in particular a cosmetic preparation comprising an antiperspirant, aluminium-containing active ingredient, in particular aluminium chlorohydrate.

[0020] By definition, homogenization is considered complete when, in step d), an emulsion is obtained in which no separate substances are discernible to the human eye. These could be separate droplets and / or crystalline structures.

[0021] Unless otherwise stated, all weight percentages (wt%) given below are based on the total weight of the preparation according to the invention. Where ratios of certain components are disclosed in the following description, these ratios refer, unless otherwise stated, to weight ratios of the components.

[0022] Unless otherwise stated, all tests and measurements were performed under "normal conditions". "Normal conditions" refers to 20°C, 1013 hPa, and 50% relative humidity.

[0023] The terms “according to the invention”, “advantageous according to the invention”, “advantageous in the sense of the present invention”, etc., always refer, within the scope of the present disclosure, to both the preparation according to the invention and the use according to the invention.

[0024] Any viscosity values ​​given in this disclosure refer to measurements taken at 25°C in a 150 ml wide-mouth bottle (VWR No.: 807-001) using the Rheomat R 123 from proRheo. The Rheomat R 123 from proRheo GmbH is a rotational viscometer, meaning that a measuring element rotates within the substance being measured. The force required to rotate the measuring element within the sample at a predetermined speed is measured. The viscosity is then calculated from this torque, the rotational speed of the measuring element, and the geometric dimensions of the measuring system. The measuring element used is No. 1 (article no. 200 0191), suitable for a viscosity range up to 10,000 mPa s, with a rotational speed range of 62.5 min⁻¹. 1 , used.

[0025] The term "skin" refers exclusively to human skin.

[0026] The invention was surprisingly able to eliminate or reduce disadvantages of the prior art.

[0027] Cosmetic and / or dermatological formulations are advantageously suitable as preparations. According to the invention, the preparation contains at least one antiperspirant, aluminum-containing active ingredient.

[0028] It is particularly advantageous if the antiperspirant, aluminium-containing active ingredient is chosen from the group of aluminium salts with the formula [Al2(0H) m Cln], where m+n=6.

[0029] Examples of aluminium salts according to the invention are:

[0030] - Aluminum salts such as aluminum chloride AlCh, aluminum sulfate Ah(SO4)3

[0031] - Aluminum chlorides of the empirical molecular formula [Al2(OH) m Cl n ], where m+n=6

[0032] - Aluminum chlorohydrate [Al2(OH)sCI] x H2O (ACH)

[0033] Standard Al complexes: Locron P (Clariant), Locron L (Clariant), Micro-Dry (Reheis), ACH-331 (Summit), Aloxicoll PF 40 (Giulini).

[0034] - Activated Al complexes: Reach 501 (Reheis), AACH-324 (Summit), AACH-7171 (Summit), Aloxicoll P (Giulini), Aloxicoll SD100

[0035] - Aluminum sesquichlorohydrate [Ah OH sCh.s] x H2O

[0036] Standard Al complexes: Aluminum Sesquichlorohydrate (Reheis), AACH-308 (Summit)

[0037] - Activated Al complexes: Reach 301 (Reheis)

[0038] - Aluminum dichlorohydrate [Ah OH^Ch] x H2O

[0039] Furthermore, it is advantageous if at least one aluminum zirconium salt is included as the antiperspirant, aluminum-containing active ingredient. Advantageously selected from the group are aluminum / zirconium trichlorohydrex glycine ([Al4Zr(OH)i3Ch] x H2O x Gly), aluminum / zirconium tetrachlorohydrex glycine ([Al4Zr(OH)i2Cl4] x H2O x Gly), aluminum / zirconium pentachlorohydrex glycine ([AlsZr OH^sCls] x H2O x Gly), aluminum / zirconium octachlorohydrex glycine ([AlsZr(OH)2oCl8] x H2O x Gly), and the glycine-free aluminum / zirconium salts. Aluminum / zirconium tetrachlorohydrex glycine is particularly preferred.

[0040] It is particularly advantageous if the antiperspirant, aluminum-containing active ingredient is aluminum chlorohydrate, aluminum sesquichlorohydrate, and / or aluminum / zirconium tetrachlorohydrex glycine, with aluminum chlorohydrate being the most preferred. Advantageously, the total proportion of the antiperspirant, aluminum-containing active ingredients is 1% to 30% by weight, preferably 5% to 20% by weight, and particularly preferably 7% to 12% by weight, based on the total weight of the preparation.

[0041] It is particularly advantageous if the proportion of aluminum chlorohydrate is from 1 wt.% to 30 wt.%, preferably from 5 wt.% to 20 wt.%, and especially preferably from 7 wt.% to 12 wt.%, based on the total weight of the preparation. A disadvantage of using the aforementioned aluminum salts, as previously explained, is the formation of residues in or on clothing, which can discolor the clothing in an unsightly manner.

[0042] Textile staining refers to stains, particularly in the underarm area. These are stains that remain on clothing after wearing and washing and can become more pronounced as the garment ages. These stains are not the same as the white residue on skin or clothing often referred to as "whitening."

[0043] According to the invention, these are mostly yellowish stains that occur when the cosmetic product, combined with underarm bodily secretions during perspiration, gets onto the fabric. Washing the fabric washes away some of these deposits, while another part remains as a residue on the fabric.

[0044] According to the invention, the preparation cannot reduce or prevent the formation of all stains that may appear on a garment due to various causes. However, the preparation according to the invention can reduce or prevent the formation of those stains that are partly caused by the preparation itself, in particular those caused by aluminum-containing antiperspirants, and can improve their washability.

[0045] The measure of improvement or reduction is defined as the difference in staining or its washing out when using the preparation according to the invention and the preparation without charged surfactants.

[0046] The invention does not refer to stains that occur when a deodorant or antiperspirant comes into direct contact with the fabric. Rather, it refers to the whitish deposits left by the product's ingredients, such as aluminum salts. These stains are easily avoidable if the product is allowed to dry before being put on the garment. These white residues can usually be removed mechanically (by brushing) or by washing. This problem of "whitening" is described in detail in the prior art, which also offers possible solutions. The invention specifically addresses the known yellowish staining of antiperspirants in or on clothing after the garment has been washed. The invention also focuses on the improved washability of these stains.The yellow value of the spot is therefore defined in particular by the b-value, which can be determined photometrically using the color numerical values ​​in the CIE L*a*b* color space.

[0047] The use of stain prevention or improved washability according to the invention preferably relates to textiles that contain cotton or consist of cotton.

[0048] The preparation advantageously also comprises geranyl acetate. If geranyl acetate is included, it is preferred that the proportion of geranyl acetate is from 0.0001 to 4.0 wt.%, preferably from 0.01 to 2.5 wt.%, and particularly preferably from 0.2 to 2.1 wt.%, based on the total weight of the preparation.

[0049] The preparation advantageously also comprises linalyl acetate. If linalyl acetate is included, it is preferred that the proportion of linalyl acetate is from 0.0001 to 4.0 wt.%, preferably from 0.01 to 2.5 wt.%, and particularly preferably from 0.2 to 2.1 wt.%, based on the total weight of the preparation.

[0050] If the advantageous case occurs that both geranyl acetate and linalyl acetate are present, it is advantageous if the total proportion of geranyl acetate and linalyl acetate is from 0.0001 to 4.0 wt.%, preferably from 0.01 to 2.5 wt.% and particularly preferably from 0.2 to 2.1 wt.%, based on the total weight of the preparation.

[0051] It is further advantageous according to the invention if the preparation is in the form of an emulsion. It is preferred if the emulsion is in the form of an oil-in-water emulsion. It is preferred according to the invention if the emulsion is in the form of a macroemulsion. In particular, it is preferably an oil-in-water macroemulsion. A macroemulsion is advantageously characterized in that it has an average oil droplet size of 0.1 to 50 pm, these values ​​being determinable by light scattering. A microemulsion has an average oil droplet size of less than 0.1 pm. Advantageously, the preparation can also be in the form of a microemulsone.

[0052] According to the invention, it is advantageous if the preparation comprises at least one non-ionic emulsifier with an HLB value in the range of 3 to 6. It is particularly preferred according to the invention if the at least one non-ionic emulsifier with an HLB value in the range of 3 to 6 is present in a total proportion of 1.5 wt.% to 3.5 wt.%, preferably 1.8 wt.% to 3.2 wt.%, and especially preferably 2.1 wt.% to 2.9 wt.%, based on the total weight of the preparation. Preferred non-ionic emulsifiers with an HLB value in the range of 3 to 6 are selected from steareth, ceteth, myristeth, laureth, trideceth, arachideth, and beheneth, each containing 1 to 4 ethylene oxide units per molecule. Particularly preferred are Steareth-1, Steareth-2, Steareth-3, Ceteth-1, Ceteth-2, Ceteth-3, Myristeth-1, Myristeth-2, Laureth-1, Beheneth-2, Beheneth-3 and / or Beheneth-4, with Steareth-2 being the most preferred.

[0053] According to the invention, it is further advantageous if the preparation comprises at least one non-ionic emulsifier with an HLB value in the range of 12 to 18. It is preferred, according to the invention, if the at least one non-ionic emulsifier with an HLB value in the range of 12 to 18 is present in a total proportion of 0.5 wt.% to 3.0 wt.%, preferably 0.8 wt.% to 2.7 wt.%, and particularly preferably 1.2 wt.% to 2.1 wt.%, based on the total weight of the preparation. Preferred non-ionic emulsifiers with an HLB value in the range of 12 to 18 are selected from steareth, ceteth, myristeth, laureth, trideceth, arachideth, and beheneth, each with 7 to 40 ethylene oxide units per molecule. Particularly preferred are Steareth-15, Steareth-20, Steareth-21, Arachideth-20, Arachideth-21, Beheneth-20, Beheneth-21, Ceteth-20, Ceteth-30, Ceteth-15 and / or Myristeth-15, with Steareth-21 being the most preferred.

[0054] A combination of emulsifiers containing at least steareth- is particularly preferred.

[0055] 2 and Steareth-21.

[0056] Preferred formulations comprise at least one polyglyceryl ester. A polyglyceryl ester is understood to be an ester formed from polyglycerol (for example, polyglycerol-10) and at least one mono- or polyhydric fatty acid.

[0057] Erfindungsgemäß vorteilhafte Polyglycerylester sind Polyglyceryl-10 Caprate, Polyglyceryl-10 Laurate, Polyglyceryl-10 Trilaurate, Polyglyceryl-10 Myristate, Polyglyceryl-10 Dimyristate, Polyglyceryl-10 Oleate, Polyglyceryl-10 Dioleate, Polyglyceryl-10 Stearate, Polyglyceryl-10 Distearate, Polyglyceryl-10 Diisostearate, Polyglyceryl-6 Caprylate, Polyglyceryl-6 Dicaprylate, Polyglyceryl-6 Oleate, Polyglyceryl-6 Ricinoleate, Polyglyceryl-6 Stearate, Polyglyceryl-6 Behenate, Polyglyceryl-5 Laurate, Polyglyceryl-5 Myristate, Polyglyceryl-5 Oleat, Polyglyceryl-5 Dioleate, Polyglyceryl-5 Stearate, Polyglyceryl-4 Caprate, Polyglyceryl-

[0058] 3 Caprates, polyglyceryl-3 cocoates, polyglyceryl-3 caprates / caprylates / succinates, and / or polyglyceryl-3 distearate. It is further advantageous if the polyglyceryl ester(s) are formed from a polyglycerol comprising 3 to 10 glycerol subunits and at least one mono- or polyhydric fatty acid with 4 to 22 carbon atoms. It is particularly advantageous if the polyglyceryl ester(s) are formed from a polyglycerol comprising 3 to 6 glycerol subunits and at least one fatty acid with 4 to 12 carbon atoms.

[0059] A particularly advantageous embodiment of the invention is characterized in that the preparation contains a polyglyceryl ester selected from the group consisting of polyglyceryl-4 caprate, polyglyceryl-6 caprylate and polyglyceryl-3 caprate / caprylate / succinate.

[0060] It is preferred if the proportion of polyglyceryl esters is 0.5 to 8.0 wt.%, preferably 1.0 to 6.0 wt.% and particularly preferably 2.2 to 4.5 wt.%, based on the total weight of the preparation.

[0061] Es ist bevorzugt, wenn der Anteil von Polyglyceryl-10 Caprate, Polyglyceryl-10 Laurate, Polyglyceryl-10 Trilaurate, Polyglyceryl-10 Myristate, Polyglyceryl-10 Dimyristate, Polyglyceryl-10 Oleate, Polyglyceryl-10 Dioleate, Polyglyceryl-10 Stearate, Polyglyceryl-10 Distearate, Polyglyceryl-10 Diisostearate, Polyglyceryl-6 Caprylate, Polyglyceryl-6 Dicaprylate, Polyglyceryl-6 Oleate, Polyglyceryl-6 Ricinoleate, Polyglyceryl-6 Stearate, Polyglyceryl-6 Behenate, Polyglyceryl-5 Laurate, Polyglyceryl-5 Myristate, Polyglyceryl-5 Oleat, Polyglyceryl-5 Dioleate, Polyglyceryl-5 Stearate, Polyglyceryl-4 Caprate, Polyglyceryl- 3 Caprate, Polyglyceryl-3 Cocoate, Polyglyceryl-3 Caprate / Caprylate / Succinate und / oder Polyglyceryl-3 Distearate von 0,5 bis 8,0 Gew.-%, bevorzugt von 1,0 bis 6,0 Gew.-% und insbesondere bevorzugt von 2,2 bis 4,5 Gew.-% beträgt, bezogen auf das Gesamtgewicht der Zubereitung.

[0062] It is preferred if the proportion of polyglyceryl esters from a polyglycerol having 3 to 10 glycerol subunits and at least one mono- or polyhydric fatty acid with 4 to 22 carbon atoms is 0.5 to 8.0 wt.%, preferably 1.0 to 6.0 wt.% and particularly preferably 2.2 to 4.5 wt.%, based on the total weight of the preparation.

[0063] It is preferred if the proportion of polyglyceryl esters from a polyglycerol having 3 to 6 glycerol subunits and at least one fatty acid with 4 to 12 carbon atoms is 0.5 to 8.0 wt.%, preferably 1.0 to 6.0 wt.% and particularly preferably 2.2 to 4.5 wt.%, based on the total weight of the preparation.

[0064] It is preferred if the proportion of the polyglyceryl esters selected from the group consisting of polyglyceryl-4 caprate, polyglyceryl-6 caprylate and polyglyceryl-3 caprate / caprylate / succinate is 0.5 to 8.0 wt.%, preferably 1.0 to 6.0 wt.% and particularly preferably 2.2 to 4.5 wt.%, based on the total weight of the preparation.

[0065] Furthermore, the preparation advantageously comprises at least 1.4 wt% of at least one alkyl glucoside, wherein the alkyl group has 6 to 14 carbon atoms. Advantageously, an alkyl glucoside is included which comprises an alkyl group with 8 to 10 carbon atoms.

[0066] It is particularly advantageous if caprylyl / capryl glucoside is included as the alkyl glucoside.

[0067] According to the invention, it is advantageous if the proportion of alkyl glucosides comprising an alkyl group with 6 to 14 carbon atoms is 1.4 to 6 wt.%, preferably 1.8 to 5.5 wt.% and particularly preferably 2.0 to 5.0 wt.%, based on the total weight of the preparation.

[0068] According to the invention, it is advantageous if the proportion of alkyl glucosides comprising an alkyl group with 8 to 10 carbon atoms is 1.4 to 6 wt.%, preferably 1.8 to 5.5 wt.% and particularly preferably 2.0 to 5.0 wt.%, based on the total weight of the preparation.

[0069] It is particularly preferred if caprylyl / capryl glucosides are contained in a proportion of 1.4 to 6 wt.%, preferably 1.8 to 5.5 wt.% and particularly preferably 2.0 to 5.0 wt.% based on the total weight of the preparation.

[0070] It is advantageous if the preparation contains substances comprising at least one polyethylene glycol subunit in proportions of less than 0.5 wt.%, preferably less than 0.3 wt.%, preferably less than 0.1 wt.% and particularly preferably 0 wt.%.

[0071] A polyethylene glycol subunit consists of at least two consecutive ethylene glycol units. Furthermore, according to the invention, it is advantageous for the preparation to contain butylene glycol and / or 1,3-propanediol. Advantageously, the proportion of butylene glycol and / or 1,3-propanediol is 1 to 40% by weight, preferably 2 to 30% by weight, and particularly preferably 4 to 25% by weight, based on the total weight of the preparation. It is particularly advantageous if 1,3-propanediol is included.

[0072] Furthermore, it is advantageous if the preparation additionally contains at least one or more other perfume substances that are liquid under normal conditions. Advantageously chosen additional perfume substances are selected from essential oils, geraniol, linalool, tetrahydrolinalool, citronellol, citronellyl acetate, dihydromyrcenol, dihydromyrcenyl acetate, tetrahydromyrcenol, terpineol, terpinyl acetate, nopol, nopyl acetate, 2-phenyl benzyl alcohol, benzyl acetate, benzyl salicylate, benzyl benzoate, styrallyl acetate, amyl salicylate, dimethylbenzylcarbinol, trichloromethylphenylcarbinyl acetate, p-tert-butylcyclohexyl acetate, isononyl acetate, vetiveryl acetate, alpha-hexylcinnamaldehyde, 2-methyl-3-(p-tert-butylphenyl)propanol, 2-methyl-3-(p-isopropylphenyl)propanal, 3-(p-tert--Butylphenyl) propanal, tricyclodecenyl acetate, tricyclodecenyl propionate, 4-(4-hydroxy-4-methylpentyl)-3-cyclohexenecarbaldehyde, 4-(4-methyl-3-pentenyl)-3-cyclohexenecarbaldehyde, 4-acetoxy-3-pentyltetrahydropyran, methyldihydrojasmonate, 2 -heptylcyclopentanone, 3-methyl -2-pentylcyclopentanone, n-decanal, 9-decenol-1, phenoxyethyl isobutyrate, phenylacetaldehyde dimethyl acetal, phenylacetaldehyde diethyl acetal, geranonitrile, citronellonitrile, cedryl acetate, 3-isocamphylcyclohephane, ethine, heliotropin, coumarin, eugenol, Vanillin, Diphenyloxide, Hydroxycitronellal, Ionone, Methylionone, Isomethylionone, Iron, cis-3-hexenol and esters thereof, indane musk fragrances, tetralin musk fragrances, isochromane musk fragrances, macrocyclic ketones, macrolactone muscrown, macrolactone muscrown brassylate, and aromatic nitro musk fragrances. Other perfume components that may be included but are not expressly preferred are listed in Arctander, Perfume and Flavor Chemicals (Chemicals) Vol.I and II (1969) and Arctander, Perfume and Flavour Materials of Natural Origin (1960).

[0073] Advantageously, the proportion of the other perfume substances, which are liquid under normal conditions, is 0.001 to 2 wt.%, preferably 0.005 to 1.5 wt.% and particularly preferably 0.01 to 1.4 wt.% based on the total weight of the preparation.

[0074] In one embodiment of the invention, it is advantageous if propylene glycol is included, wherein the proportion of propylene glycol is advantageously between 0.01 and 1.5 wt.%, based on the total weight of the preparation. It is further advantageous according to the invention if the preparation contains other polyols in proportions of less than 0.5 wt.%, preferably less than 0.4 wt.%, preferably less than 0.3 wt.%, preferably less than 0.2 wt.%, preferably less than 0.1 wt.%, and particularly preferably 0 wt.%, in each case based on the total weight of the preparation.

[0075] According to the invention, it is further advantageous if the preparation contains glycerin and / or pentylene glycol in total proportions of less than 0.5 wt.%, preferably less than 0.4 wt.%, preferably less than 0.3 wt.%, preferably less than 0.2 wt.%, preferably less than 0.1 wt.% and particularly preferably 0 wt.%, in each case based on the total weight of the preparation.

[0076] Furthermore, it is advantageous if the preparation contains at least one oil. Suitable oils can be either natural or synthetic.

[0077] The use of natural oils, in particular Persea Gratissima Oil and / or Helianthus Annuus Seed Oil, is advantageous. If at least one natural oil is included, it is advantageous if the total proportion of natural oils is between 0.05 and 4% by weight, based on the total weight of the preparation.

[0078] According to the invention, it is preferred if the preparation comprises at least PPG-15 stearyl ether in the form of an oil. If PPG-15 stearyl ether is included, it is preferred if the proportion of PPG-15 stearyl ether is from 0.1 to 5% by weight, based on the total weight of the preparation.

[0079] In general, it is preferred that the oils in the preparation are present in a total proportion of 0.02 to 5.5% by weight, where the specification refers to the total weight of the preparation.

[0080] Furthermore, it is advantageous if the preparation contains water, and it is preferred if the proportion of water is 40 to 90 wt.%, in particular preferably 45 to 85 wt.%, where the figures refer to the total weight of the preparation.

[0081] Furthermore, according to the invention, it is possible for the preparations to contain additional excipients. These may include colorants, thickeners, deodorants, or other ingredients. Examples:

[0082] The following examples are intended to illustrate the preparations and products of this invention, without limiting the invention to these examples. The numerical values ​​in the examples are percentages by weight, based on the total weight of the preparations.

[0083] In vitro method for determining stain intensity: Materials:

[0084] Textile: white, 100% cotton

[0085] Test substances / media a.) Sebum: Sebum according to BEY b.) Sweat: Human sweat or synthetic sweat, artificial axillary sweat (according to DIN 53160-2:2010-10) c.) Comparison products

[0086] The application of the weld (b.)) is optional.

[0087] Water quality: Tap water (preferably medium-hard to hard) Detergent: Standard commercial detergents, e.g., Spee Megaperls Washing machine: Standard commercial washing machine, e.g., Miele The sebum causes the stain to have a comparable yellow tint. Without sebum, the stains tend to be gray. Such a method has already been described in the literature: The Trouble with Stains. SPC July, pages 25-28;

[0088] Materials such as sebum according to BEY are available, for example, as standard test dirt from WfK-Testgewebe GmbH.

[0089] Order quantities:

[0090] Product: possible range: 10 mg / cm² 2 up to 50 mg / cm² 2 , preferably 13 mg / cm² 2 up to 40 mg / cm² 2 , especially preferably 15 mg / cm² 2 up to 30 mg / cm² 2

[0091] Sebum: possible range: 1 mg / cm² 2 up to 15 mg / cm² 2 , preferably 2 mg / cm² 2 up to 10 mg / cm² 2especially preferred 3 mg / cm² 2 up to 6 mg / cm² 2

[0092] Sweat solution: possible range: 5 mg / cm² 2 up to 40 mg / cm² 2 , preferably 7 mg / cm² 2 up to 30 mg / cm² 2

[0093] Product to sebum ratio 1:1 to 7:1, preferably 2:1 to 6:1. Product to human sweat ratio 1:3 to 7:1, preferably 1:1 to 4:1.

[0094] Color measurement: photometric, determination of color values ​​in the CIE L*a*b* color space, difference formation compared to an unblemished reference material.

[0095] Average of at least 5 measurements per area.

[0096] The dB value (yellow value) is preferably used for evaluation.

[0097] Process:

[0098] 1. Pre-wash and dry the textile cutouts

[0099] 2. Marking of the areas. 3. Preferred application of the media in the following order: a.) preparation, b.) if applicable, sweat, c.) sebum, waiting at least 10 minutes after each material until it is absorbed. Alternatively, the substances can be mixed together completely or partially beforehand and then applied in this mixture.

[0100] 4. Store the samples at 38°C and 80% relative humidity, preferably for at least 12 hours.

[0101] 5. Wash in washing machine at 60°C using the cotton wash program, detergent dosage according to manufacturer's instructions for medium water hardness and normal degree of soiling.

[0102] 6. Drying, e.g. at room temperature, 40°C or in a standard tumble dryer

[0103] 7. Color measurement on the stained areas and an unstained reference area and calculation of the difference.

[0104] 8. Repeat steps 2 to 7 at least once, preferably four times photometrically, determining the color values ​​in the CIE L*a*b* color space. In particular, determine the b-value compared to an unmarked textile. The difference yields the db* value. The higher the db* value, the more textile staining is present.

[0105] The homogenization time was determined in step d) (see above) by recording a test series for each example, homogenizing the sample for a specific duration. The shortest time to complete homogenization (see definition above) was recorded in the table below. Homogenization was performed using an IKA T 25 digital Ultra Turrax at 20,000 rpm. For each measurement, 250 g of the total ingredients were used in a 600 mL beaker.

[0106] Examples of macroemulsions: Examples of microemulsions:

[0107] Examples of suspension:

[0108] Aerosol spray suspensions:

[0109] The suspensions mentioned above were filled into aerosol cans with a dispensing valve as follows: 15% by weight suspension + 85% by weight propellant (a mixture of propane, isobutane, and butane). The aerosol cans, or pressure vessels, have a dispensing valve that can be manually operated to spray the suspension. The pressure vessel is made of aluminum, an aluminum alloy, and / or recycled aluminum and is internally coated with a protective lacquer that does not contain added BPA.

[0110] Further example recipes are listed below:

[0111]

Claims

Claims 1. Cosmetic preparation comprising a) at least one antiperspirant containing aluminium, and b) geranyl acetate and / or linalyl acetate.

2. Preparation according to claim 1 characterized in that the antiperspirant, aluminium-containing active ingredient is selected from the group of aluminium salts with the formula [Al2(OH) m Cl n ], where m+n=6.

3. Preparation according to one of the preceding claims characterized in that, if the antiperspirant, aluminium-containing active ingredient is aluminium chlorohydrate, aluminium sesquichlorohydrate, aluminium / zirconium pentachlorohydrex glycine and / or aluminium / zirconium tetrachlorohydrex glycine, wherein aluminium chlorohydrate is most preferred.

4. Preparation according to one of the preceding claims characterized in that the total proportion of the antiperspirant, aluminium-containing active ingredients is 1 wt.% to 30 wt.%, preferably 5 wt.% to 20 wt.% and particularly preferably 7 wt.% to 12 wt.%, based on the total weight of the preparation.

5. Preparation according to one of the preceding claims characterized in that it contains geranyl acetate, wherein it is preferred that the proportion of geranyl acetate is from 0.0001 to 4.0 wt.%, preferably from 0.01 to 2.5 wt.% and particularly preferably from 0.2 to 2.1 wt.%, based on the total weight of the preparation.

6. Preparation according to one of the preceding claims characterized in that it contains linalyl acetate, wherein it is preferred that the proportion of linalyl acetate is from 0.0001 to 4.0 wt.%, preferably from 0.01 to 2.5 wt.% and particularly preferably from 0.2 to 2.1 wt.%, based on the total weight of the preparation.

7. A preparation according to one of claims 1 to 4, characterized in that it contains both geranyl acetate and linalyl acetate, it is advantageous if the total proportion of geranyl acetate and linalyl acetate is from 0.0001 to 4.0 wt.%, preferably from 0.01 to 2.5 wt.% and particularly preferably from 0.2 to 2.1% by weight, based on the total weight of the preparation.

8. Preparation according to one of the preceding claims characterized in that the preparation is in the form of an oil in water emulsion.

9. Preparation according to claim 8 characterized in that the emulsion has a mean oil droplet size of 0.1 to 50 pm.

10. Preparation according to one of the preceding claims characterized in that the preparation comprises at least one non-ionic emulsifier with an HLB value in the range of 3 to 6.

11. Preparation according to one of the preceding claims characterized in that the preparation comprises at least one non-ionic emulsifier with an HLB value in the range of 12 to 18.

12. Preparation according to one of the preceding claims characterized in that the preparation contains water, wherein it is preferred if the proportion of water is 40 to 90 wt.%, in particular preferably 45 to 85 wt.%, wherein the values ​​refer to the total weight of the preparation.

13. Use of Geranyl Acetate and / or Linalyl Acetate in cosmetic preparations to prevent staining of clothing caused by the cosmetic preparation and / or to improve the washability of these stains.

Citation Information

Patent Citations

  • Antiperspirant stick

    EP1178775A1

  • Use of loaded surfactants for reducing textile spotting due to antiperspirants

    WO2010097205A2

  • DE2165302A1

  • Compositions Comprising Antimicrobials and (Bio)-Alkanediols for Skin Protection

    US20230293409A1