Antiperspirants containing benzaldehyde and ionones

Abstract

A cosmetic preparation.

Description

[0001] Beiersdorf AG

[0002] Antiperspirants containing benzaldehyde and ionones

[0003] The invention belongs to the cosmetic field and is a cosmetic preparation that can be homogenized particularly quickly.

[0004] 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.

[0005] 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. This decomposition process produces fatty acid residues, which characterize the typical, familiar smell of sweat. Although deodorants and antiperspirants are applied to the same area of ​​skin and have the same objective, they differ in their technical mechanisms of action.

[0006] Antiperspirants contain active ingredients that inhibit and reduce perspiration. Antiperspirants containing aluminum can clog the sweat glands.

[0007] 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.

[0008] 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.

[0009] In addition to product performance, a growing number of consumers value products that are manufactured as sustainably as possible, meaning with minimal energy consumption. For cosmetic manufacturers, it is therefore becoming increasingly important to provide cosmetic products that require less energy input during production. Relevant steps include, among others, the heating of components or premixes, as well as the homogenization times of components.

[0010] The goal is to achieve the shortest possible homogenization times, as this allows for higher product yields per unit of time, for example in batch processes. This significantly reduces production and energy costs per unit.

[0011] Consequently, there is a need to enable more environmentally friendly production of antiperspirant preparations. In particular, the required homogenization time should be reduced.

[0012] Antiperspirant preparations are described, among other documents, in W02012080017 A2 and EP 2023888 B1. However, neither of these documents provided any guidance.

[0013] Surprisingly, it has now been found that the present invention addresses the problem.

[0014] The invention relates to a cosmetic preparation in the form of an emulsion comprising a) aluminium chlorohydrate, and b) benzaldehyde and / or ionones.

[0015] According to the invention, the use of benzaldehyde in cosmetic preparations in the form of emulsions containing aluminum chlorohydrate to reduce the homogenization time during the production of the preparation is particularly useful.

[0016] Surprisingly, it was found that the emulsions of the invention can be homogenized significantly faster in the presence of benzaldehyde. Structurally similar substances, on the other hand, showed a considerably longer homogenization time.

[0017] According to the invention, a method comprising the steps a) spreading out one or more components of the preparation, which are not benzaldehyde and ionones, and optionally mixing and / or pre-homogenizing, b) adding benzaldehyde and / or ionones to the components from step a), c) optionally adding further components of the preparation and d) homogenizing the preparation.

[0018] 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.

[0019] 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.

[0020] Unless otherwise stated, all tests and measurements were performed under "normal conditions". "Normal conditions" refers to 20°C, 1013 hPa, and 50% relative humidity.

[0021] 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.

[0022] Where viscosity values ​​are given in this disclosure, all values ​​refer to a measurement 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 used. 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 of 62.5 rpm. -1 , used.

[0023] The term "skin" refers exclusively to human skin. The invention surprisingly eliminated or reduced disadvantages of the prior art.

[0024] Cosmetic and / or dermatological formulations are advantageously suitable as preparations.

[0025] It is advantageous if the proportion of aluminium chlorohydrate is from 1 wt.% to 30 wt.%, preferably from 5 wt.% to 20 wt.% and particularly preferably from 7 wt.% to 12 wt.%, based on the total weight of the preparation.

[0026] The preparation advantageously also comprises benzaldehyde. It is preferred that the proportion of benzaldehyde 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.

[0027] The preparation advantageously comprises ionones. The ionone is preferably characterized by being present as β-ionone. It is preferred that the proportion of ionones 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.

[0028] It is further in accordance with 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 also preferred if the emulsion is in the form of a macroemulsion. In particular, it is preferably an oil-in-water macroemulsion.

[0029] A macroemulsion is advantageously characterized by having an average oil droplet size of 0.1 to 50 pm, which can be determined 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.

[0030] 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 that 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.

[0031] 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.

[0032] A combination of emulsifiers containing at least steareth- is particularly preferred.

[0033] 2 and Steareth-21.

[0034] 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.

[0035] 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-

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] It is preferred if the proportion of polyglyceryl esters is selected from the group consisting of polyglyceryl-4 caprate, polyglyceryl-6 caprylate and polyglyceryl-3.

[0043] Caprate / caprylate / succinate of 0.5 to 8.0 wt.%, preferably of 1.0 to 6.0 wt.% and particularly preferably of 2.2 to 4.5 wt.%, based on the total weight of the preparation.

[0044] 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.

[0045] It is particularly advantageous if caprylyl / capryl glucoside is included as the alkyl glucoside.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.%.

[0050] 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.

[0051] Furthermore, it is advantageous if the preparation additionally contains at least one or more other perfume ingredients that are liquid under normal conditions. Advantageously chosen additional perfume ingredients 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).

[0052] 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.

[0053] In one embodiment of the invention, it is advantageous if propylene glycol is included, wherein the proportion of propylene glycol is advantageously between 0.5 and 2.5 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.

[0054] 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.

[0055] Furthermore, it is advantageous if the preparation contains at least one oil. Suitable oils can be either natural or synthetic.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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:

[0061] 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.

[0062] The preparations were made by heating the raw materials of the oil phase to 75°C. Additionally, the raw materials of the aqueous phase, with the exception of an aqueous aluminum chlorohydrate solution (50 wt% aluminum chlorohydrate + 50 wt% water), were heated to 75°C. The two phases were then combined and cooled to 40°C while stirring. At 40°C, the aluminum chlorohydrate solution was added, followed by pre-homogenization under standard conditions. Benzaldehyde, ionones, and / or phellandrene were then added. The mixture was subsequently homogenized under standard conditions. This homogenization time was determined by recording a test series for each sample, in which the sample was homogenized for a specific duration. The shortest time to complete homogenization (see definition above) was recorded in the table above. Homogenization was performed using an IKA T 25 digital Ultra Turrax with 20The measurement was performed at 000 rpm. For each measurement, 250g of the total ingredients were used in a 600mL beaker.

[0063] Compared to phellandrene, β-ions and benzaldehyde show a shorter homogenization time.

[0064] Examples of microemulsions:

[0065] Examples of suspension (not part of the invention):

[0066] Aerosol spray suspensions (not part of the invention):

[0067] 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.

[0068] Further example formulations according to the invention are listed below:

[0069]

Claims

1. Cosmetic preparation in the form of an emulsion comprising a) aluminium chlorohydrate, and b) benzaldehyde and / or ionones.

2. Preparation according to claim 1 characterized in that the proportion of aluminium chlorohydrate is from 1 wt.% to 30 wt.%, preferably from 5 wt.% to 20 wt.% and particularly preferably from 7 wt.% to 12 wt.%, based on the total weight of the preparation.

3. Preparation according to one of the preceding claims, characterized in that the preparation comprises benzaldehyde.

4. Preparation according to claim 3 characterized in that the proportion of benzaldehyde 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.

5. Preparation according to one of the preceding claims, characterized in that the preparation comprises Ionone 6. Preparation according to claim 5 characterized in that the proportion of ionones 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. Preparation according to one of the preceding claims characterized in that the ionone is characterized in that it is present as β-ionone.

8. Preparation according to claim 7 characterized in that the proportion of β-lonone 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.

9. Preparation according to one of the preceding claims, characterized in that the emulsion is an oil-in-water emulsion.

10. Preparation according to one of the preceding claims characterized in that the emulsion has a mean oil droplet size of 0.1 to 50 pm.

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 3 to 6.

12. 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.

13. Preparation according to one of the preceding claims characterized in that oils are contained in the preparation in a total proportion of 0.02 to 5.5% by weight, wherein the figure refers to the total weight of the preparation.

14. 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.

15. Method for the manufacture of a cosmetic preparation comprising the steps a) spreading out one or more components of the preparation which are not benzaldehyde and ionones, b) adding benzaldehyde and / or ionones to the components from step a), c) optionally adding further components of the preparation and d) homogenizing the preparation.

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