Solid preparation and use of a polar oil

Abstract

Solid preparation including: - a wax component consisting of at least one natural wax, - at least one hydrocarbon that is volatile at a temperature of 25°C and an air pressure of 1013 hPa and - at least one liquid oil at a temperature of 25°C and an air pressure of 1013 hPa with an oil / water interfacial tension of less than 30 mN / m.

Description

[0001] The present invention relates to a solid preparation which is characterized by a structured wax phase and to the use of an oil which is liquid at a temperature of 25°C and an air pressure of 1013 hPa and has an oil / water interfacial tension of less than 30 mN / m.

[0002] Over the past decade, a noticeable shift has been observed among consumers striving for greater naturalness and sustainability. Specifically in the interest of sustainability, efforts are being made to minimize the use of mineral oil-based or petroleum-based raw materials in many sectors, such as crayons and cosmetics, because they represent a limited, non-renewable resource.

[0003] However, due to their positive properties, such as high purity, very good compatibility with other raw materials and especially oil components, and thus often a very simple formulation of stable products, petroleum-based substances such as polyethylene, ozokerites or polyisobutenes are still used.

[0004] Volatile silicone compounds such as D4, D5, D6, or low-molecular-weight, linear silicones / dimethicones are often used as volatile components. These compounds are classified as SVHC (substances of very high concern) by the ECHA (European Chemicals Agency). This means that these raw material classes should also no longer be considered for future new developments.

[0005] To meet the desire for greater sustainability, efforts are being made to utilize more natural raw materials. When developing a natural product, such as a wax-based crayon or cosmetic pencil, the raw material selection is limited to waxes and oils of natural origin. This presents several challenges.

[0006] For example, waxes from natural sources have a diverse chemical structure, usually with a basic structure of esters, n-alkanes, fatty alcohols, fatty acids, ketones, mono-, di-, and triacylglycerides, as well as sterol esters, and especially mixtures thereof. Waxes classified as "generally safe," such as beeswax, rice bran wax, candelilla wax, or carnauba wax, are often used.

[0007] The interactions of waxes with themselves and with other waxes and oils used and thus the stability of a preparation depend on many factors, such as the degree of purity of the substances used, the chemical composition of the preparation, as well as the melting and crystallization temperatures.

[0008] Different samples of the same wax plant also contain different wax compositions, which can be analyzed using chromatography.

[0009] It is therefore often difficult to predict how different natural waxes will behave in a preparation. Especially in combination with natural volatile components, such as low-molecular-weight alkanes (linear and branched), which are used as potential alternatives to the aforementioned volatile silicone compounds, incompatibility between the polar components of the natural wax and the non-polar volatile alkane is not uncommon. This, in turn, can lead to separation or undesirable effects, such as so-called "blooming." "Blooming" or "efflorescence" refers to the separation and crystallization of incompatible wax components, which appears as small white crystals or a whitish coating on the surface of solid wax-containing preparations, such as chocolate, colored pencils, or cosmetic pencils.

[0010] This phenomenon is perceived as unsightly by consumers or users and is often even confused with mold, which means that products showing efflorescence are not saleable.

[0011] Based on this prior art, it is an object of the present invention to provide a solid preparation characterized by a well-structured and stable wax phase, thus minimizing incompatibilities and effectively preventing separations, such as blooming. Furthermore, it is an object of the present invention to provide the use of an oil that is liquid at a temperature of 25°C and an air pressure of 1013 hPa and has an oil / water interfacial tension of less than 30 mN / m in a solid wax-containing preparation.

[0012] The objects are achieved by the features of the independent claims. The dependent claims contain advantageous developments and refinements of the invention.

[0013] In the following description, the raw materials described are listed by their INCI (International Nomenclature of Cosmetic Ingredients) names, unless otherwise noted. Furthermore, all quantities are given as a percentage by mass.

[0014] According to a first aspect of the present invention, the object is achieved by a solid preparation which comprises a wax component, at least one hydrocarbon which is volatile at a temperature of 25°C and an air pressure of 1013 hPa and at least one oil which is liquid at a temperature of 25°C and an air pressure of 1013 hPa and has an oil / water interfacial tension of less than 30 mN / m.

[0015] A solid preparation within the meaning of the present invention is understood to be a preparation which is used in particular for art supplies and cosmetic purposes and which is not free-flowing under its own weight at room temperature, i.e. 25°C. The preparation can be in various forms, for example filled into a jar or a tin. The preparation can also be in the form of a lead and provided with a sleeve or other casing, as is the case, for example, with wax crayons, colored pencils, lipsticks, lip liners, eyeliners or eyebrow pencils. However, any other form is also conceivable and the present invention is not limited to the aforementioned forms of application. The preparation according to the invention can be applied to the application site directly or by means of an applicator.

[0016] It goes without saying that the preparation according to the invention can have a different composition depending on the application form. However, the preparation always comprises a wax component consisting of at least one natural wax. A natural wax within the meaning of the invention is a wax that is of plant or animal origin or is nature-identical, and is thus a "replica" of a plant or animal wax and has the same composition. Purely synthetically produced waxes are excluded from this; however, vegetable oils hardened by hydrogenation reactions are not considered purely synthetically produced waxes within the meaning of the invention and also fall under "natural wax." Examples of hardened vegetable oils are hydrogenated castor oil or hydrogenated jojoba oil. The wax component consists of at least one natural wax and can comprise two or more natural waxes.In other words, a natural wax is a substance or mixture of substances that belongs to the lipid family. The main components of these natural substances or mixtures are esters of fatty acids with long-chain, aliphatic, primary alcohols, so-called fatty alcohols. In addition to its main component, the natural wax may also contain free, long-chain, aliphatic carboxylic acids, ketones, alcohols, and hydrocarbons. These minor components are inherent in the natural wax and are not added separately. They are present in the natural wax in a maximum of 20% by mass, based on the total mass of the natural wax.

[0017] Different natural waxes not only have different compositions, but also differ, for example, in their feel, melting behavior, hardness, and / or crystallization capacity. By appropriately combining two or more natural waxes, the stability and application of the preparation according to the invention can be specifically adjusted. The wax component is non-flowable at 25°C and an air pressure of 1013 hPa, but, depending on its melting point, can be melted at temperatures higher than 25°C without significant decomposition. The melting point or melting range of a wax can be measured using differential scanning calorimetry (DSC).

[0018] To determine the melting point using a DSC method, a DSC measuring device from Netzsch is used. According to the invention, a wax sample is weighed into an aluminum crucible on a precision balance. The crucible is then sealed with an aluminum lid. The sample is then examined in a DSC measuring device. To exclude oxidation processes during the measurement, the measurement is carried out under a nitrogen atmosphere. First, the sample is cooled from room temperature (RT = 25 °C) to -10 °C and then heated to 150 °C at a heating rate of 10 K / min. One measurement point is recorded every second. This allows the melting behavior of the sample to be visualized and the melting point to be determined. After 150 °C has been reached, the sample is cooled to -10 °C at a cooling rate of 10 K / min in the next step, which allows additional conclusions to be drawn about the crystallization behavior of the sample.The heating and cooling process described above can be repeated. This allows any differences from the initially recorded curves to be visualized, which then provide insights into the original manufacturing process.

[0019] The preparation according to the invention comprises, as a further essential component, at least one hydrocarbon which is volatile at a temperature of 25°C and an air pressure of 1013 hPa. The hydrocarbon can be linear or branched. Two or more of these volatile hydrocarbons can also be combined with one another in order, for example, to specifically adjust the drying behavior of the preparation. The greater the volatility at 25°C and an air pressure of 1013 hPa, the faster the preparation according to the invention dries after application at the application site. Rapid drying is desirable, for example, with eyeliners in order to prevent the eyeliner applied to the upper lash line of one eye from transferring to the upper eyelid when the made-up eye is opened. The volatile hydrocarbon can also influence the softness of the texture and thus the application behavior and coverage.To adjust the desired drying rate, one volatile hydrocarbon can be used alone or two or more volatile hydrocarbons can be combined.

[0020] As explained above for the prior art, the combination of natural waxes with a volatile hydrocarbon can lead to separations or the so-called blooming of incompatible wax components. These phenomena can be prevented according to the invention by the preparation according to the invention comprising, as a further essential component, at least one oil that is liquid at a temperature of 25°C and an air pressure of 1013 hPa and has an oil / water interfacial tension of less than 30 mN / m. The lower limit of the interfacial tension of the oil is essentially not restricted and is in particular 2 mN / m. Preferred oils used according to the invention have an oil / water interfacial tension of 10 to less than 30 mN / m and in particular of 18 to 28 mN / m. DE102005051862 A1 lists examples of oils and their interfacial tensions.

[0021] According to the invention, the Wilhelmy plate method is used to determine the interfacial tension of oils and a corresponding test setup is described in Figs. 1 and Figs. 2 shown.

[0022] The measurement is performed using a KRÜSS K-100 tensiometer. Interfacial tension is the work required to increase the interface between two adjacent, incompletely mixing phases. In a narrower sense, the term refers to the liquid / liquid phase boundaries. The force acting on an optimally wettable plate immersed vertically in the lower phase is measured. Important parameters are the dimensions of the plate, the force F acting on this plate, and the contact angle that forms between the two liquids at this plate.

[0023] When measuring interfacial tension, platinum is used as the material for the plate because it is chemically inert and easy to clean. Due to its very high surface free energy, it is optimally wettable and therefore generally forms a contact angle θ of 0° (cos θ = 1) with liquids. The desired value σ can be directly calculated from the measured force using the following equation. σ=FL⋅cosθF=Force acting on the Pt plateL=Length of the wetted Pt plateθ=Contact angle between Pt plate and liquid 1

[0024] Using the method described above, interfacial tensions of an oil to be measured can be determined at the interface with water at 25°C and an air pressure of 1013 hPa. Corresponding interfacial tensions of potentially usable oils can be obtained from the literature or measured as described above.

[0025] Among the multitude of polar oils available on the market, those that have an interfacial tension, measured using the above method, of less than 30 mN / m have proven essential for the invention. These include, in particular, ester oils, linear or branched alcohols, unsaturated fatty acids, triglycerides, and the like. It is important that the oil is liquid at 25°C and an air pressure of 1013 hPa, i.e., flowable under its own weight, as this allows it to be distributed very evenly throughout the preparation and adhere to the natural wax. Due to the oil's high affinity for polar components of the natural wax, these polar components are retained within the preparation and are not repelled. This results in a uniquely structured preparation characterized by a uniform and stable wax-oil distribution and is prone to neither incompatibilities nor separations, such as blooming.

[0026] The preparation according to the invention may further contain further components, such as antioxidants, thickeners, fillers, preservatives, care additives and the like, which, due to the demand for high sustainability of the preparation, are in particular also of natural origin.

[0027] Thus, according to an advantageous development, the preparation is free of synthetic and petroleum-based waxes. Synthetic waxes are understood, in particular, to be individual raw materials that are produced entirely by synthesis. Petroleum-based waxes include, for example, paraffin waxes, ozokerites, microcrystalline waxes, polybutenes, polyisobutenes, polyethylenes, polypropylenes, and the like. This also promotes market acceptance of the preparation.

[0028] For application to soft surfaces such as skin, semi-mucous membranes or mucous membranes, a preparation which is characterized by a moderate degree of hardness and thus a soft release is advantageous. This can be achieved by the amount of wax component, based on the total mass of the preparation, being 4 to 70% by mass, in particular 5 to 60% by mass and in particular 7 to 40% by mass. Higher amounts of wax component of more than 60% by mass or even more than 70% by mass can also be used for cosmetic applications, but are generally more suitable for crayons. In contrast, amounts of wax component which are too small, such as less than 5% by mass or even less than 4% by mass, can have a detrimental effect on the stability, i.e. both the transport stability and the storage stability of the preparation.

[0029] The natural wax is particularly advantageous, as it is a vegetable wax. This further improves the market acceptance of the preparation.

[0030] Due to its excellent evaporation behavior and high vapor pressure, the volatile hydrocarbon is advantageously selected from linear and / or branched hydrocarbons, and is particularly selected from C9-C12 alkanes, isododecanes, coconut alkanes, coco-caprylate / caprate, C9-C12 isoalkanes, C11-C15 isoalkanes, dodecanes, C13-15 alkanes, hydrogenated polyisobutenes, hydrogenated polydecenes, hydrogenated poly(C6-14 olefin), hydrogenated vegetable oil, hydrogenate rapeseed alcohol, and mixtures thereof. The use of these volatile hydrocarbons makes it possible to produce preparations that dry very quickly after application and adhere to the application site for a long time. This is particularly true if the preparation contains 7 to 40% by mass of wax component, as this remains on the application site and ensures good adhesion of the preparation there.

[0031] In order to improve the evaporation behavior, on the one hand to achieve a high evaporation rate and on the other hand to provide sufficient time to make corrections to the applied preparation, the amount of volatile hydrocarbon, based on the total mass of the preparation, is 8 to 50 mass%, in particular 9 to 40 mass% and in particular 10 to 35 mass%. While high amounts of more than 40 mass% or even more than 50 mass% result in a rather soft constitution of the preparation upon application, which is then relatively solid after evaporation of the volatile hydrocarbon, smaller amounts of volatile hydrocarbon are more suitable for improving the stability of the preparation even at storage temperatures of 40°C and above. An amount of 10 to 35 mass% has proven to be particularly suitable for amounts of wax component of 7 to 40 mass%.

[0032] Due to its excellent processability with natural waxes and volatile hydrocarbons, and in particular due to its very good affinity for polar components of natural waxes, the oil with an oil / water interfacial tension of less than 30 mN / m is preferably selected from esters, fatty alcohols, fatty acids, and glycerides, including di- and triglycerides, and is particularly selected from the group consisting of octyldodecanol, caprylic / capric triglyceride, butylene glycol dicaprylate / dicaprate, propylene glycol dicaprylate / dicaprate, dipentaerythrityl pentaisononanoate, diisostearyl malate, isopropyl myristate, isopropyl palmitate, and mixtures thereof. Octyldodecanol is particularly preferred.Due to its relatively long-chain structure, octyldodecanol is particularly well suited to intercalating between crystals of natural waxes and thus structuring the wax structure, i.e., harmonizing it and thus stabilizing any component of the natural wax in the preparation, so that separations are avoided and, in particular, blooming is suppressed.

[0033] In order to achieve improved structuring of the preparation and also to prevent blooming, even the smallest amounts of liquid oil are sufficient, such as 0.5% or 0.8% by mass. Very high amounts of liquid oil of more than 20% or even more than 25% by mass can produce very soft preparations, which then, however, also have reduced storage stability at elevated temperatures, such as 40°C. The amount of liquid oil with an oil / water interfacial tension of less than 30 mN / m is therefore preferably 0.5 to 25% by mass, in particular 0.8 to 20% by mass and in particular 1 to 10% by mass, based on the total mass of the preparation. From amounts above 25% by mass, no further stabilizing effect of any kind can be detected. Amounts of 1 to 10% by mass are very suitable for amounts of wax component of 7 to 40% by mass.

[0034] To achieve a visual effect with the preparation according to the invention, it preferably comprises at least one pigment. A single pigment or two or more pigments can be used in combination. The pigment can be tailored to the intended application. If the preparation is intended for application to a user, it will be advantageous to use a pigment approved for cosmetic use. For the purposes of the present invention, a pigment is understood to mean any coloring substance that is essentially insoluble in the preparation according to the invention.

[0035] Very good coloring effects can be achieved when the amount of pigment, based on the total mass of the preparation, is in particular 2 to 50% by mass, in particular 5 to 45% by mass, and especially 8 to 40% by mass. The lower the pigment content, the more translucent the preparation will be. The higher the pigment content, the better the color coverage at the application site.

[0036] As already stated above, the specific form of the preparation is not limited. Advantageously, the preparation has a continuous lipophilic phase, as is the case with water-in-oil emulsions or anhydrous preparations. The preparation according to the invention is particularly advantageous in anhydrous form, as it is thus less susceptible to microbial contamination and is characterized by consistently good storage stability. However, solid water-in-oil emulsions are also suitable.

[0037] Particularly advantageously, the preparation is in the form of a pencil lead, which can be free-standing or in a sheath or a sleeve or in another suitable casing.

[0038] Furthermore, the preparation is advantageously a cosmetic preparation and can be applied in particular to skin, mucous membranes, semi-mucous membranes or keratin fibers.

[0039] A further aspect of the invention also describes the use of an oil which is liquid at a temperature of 25°C and an air pressure of 1013 hPa and has an oil / water interfacial tension of less than 30 mN / m for reducing or preventing efflorescence on the surface of a solid preparation comprising a wax component comprising at least one natural wax, at least one hydrocarbon which is volatile at a temperature of 25°C and an air pressure of 1013 hPa, and the oil which is liquid at a temperature of 25°C and an air pressure of 1013 hPa. Due to its high affinity to polar components of the natural wax, the liquid oil prevents separation of these polar components and leads to good structuring of the preparation.

[0040] The advantages, advantageous effects and further developments described for the preparation according to the invention also apply to the use according to the invention.

[0041] The present invention will be further described with reference to the drawings and examples. The drawing shows: Figs. 1 a schematic structure of the Wilhelmy plate method for determining the interfacial tension in side view, Figs. 2 a section of the schematic structure of the Wilhelmy plate process according to Figs. 1 for determining the interfacial tension in the cross section, Figs. 3 a pencil lead of Example A after 12 weeks of storage at room temperature, Figs. 4 a pencil lead of Example B after 12 weeks of storage at room temperature and Figs. 5 a pencil lead of Example C after 12 weeks of storage at room temperature.

[0042] The figures show only the features essential to the invention. All other features have been omitted for clarity. Furthermore, the same reference numerals refer to the same parts, elements, or components.

[0043] Figs. 1 and Figs. Figure 2 shows the schematic setup for determining the interfacial tension of oils 2 at the phase boundary with water 3. According to the invention, a KRÜSS tensiometer K-100 is used as the measuring device. Interfacial tension is the work required to increase the interface between two adjacent, incompletely mixing phases, i.e., the test oil 2 and water 3.

[0044] When measuring interfacial tension, platinum is used as the material for plate 1. It generally forms a contact angle θ of 0° (cos θ = 1) with water 3. The desired value σ, i.e., the interfacial tension, can be directly calculated from the measured force using the following equation. σ=FL⋅cosθF=Force acting on the Pt plateL=Length of the wetted Pt plateθ=Contact angle between Pt plate and liquid 1

[0045] Using the method described above, the oil / water interfacial tensions were determined at 25°C and an air pressure of 1013 hPA for the following liquid oils: Coconut Alkanes, Coco-Caprylate / Caprate: 41.6 mN / m Isododecane: 39.6 mN / m Octyldodecanol: 21.6 mN / m Dipentaerythrityl pentaisononanoate: 13.7 mN / m Diisostearyl malates: 10.7 mN / m Caprylic / Capric triglycerides: 21.3 mN / m Butylene Glycol Dicaprylate / Dicaprate: 27.0 mN / m Propylene Glycol Dicaprylate / Dicaprate: 18.7 mN / m Triisostearin: 2.4 mN / m.

[0046] Further interfacial tensions of exemplary oils are described, for example, in DE 10 2005 051 862 A1. Examples -

[0047] As explained below, the preparations A, B, C (comparative preparation), D, E and F disclosed in Table 1 were prepared as Examples A, B, D, E and F and Comparative Example C: First, components i) were melted until a homogeneous mass was formed. Then, components ii) were added one after the other, and finally, components iii) were stirred in. The resulting mass was rolled twice using a three-roll mill and melted again. Finally, components iv) were added, and the mass was poured into a metal tube, from which a pencil lead could be removed after cooling. Table 1: File Part Rohstoff [INCHES] A [Wt%] B [Wt%] C [Wt%] D [Mass%] And [Mass%] F [Wt%] iii) Iron Oxides 77491 / 7749 2 / 77499 30,06 30,44 30,97 30,06 30,44 29,97 iii) Ferric Ammonium Ferrocyanide 77510 1,72 1,74 1,77 1,72 1,74 1,77 iii) Mica 7,16 7,25 7,37 7,16 7,25 7,37 iii) Disteardimonium Hectorite 0,25 0,40 0,40 0,25 0,40 0,40 ii) Tocopherol 0,24 0,25 0,25 0,24 0,25 0,25 i) Sucrose Tetrastearate Triacetate 7,87 7,98 8,11 7,87 7,98 7,72 i) Hydrogenate and Castor Oil 5,51 5,58 5,68 5,51 5,58 5,68 i) Bis-Behenyl / Isos tearyl / Phyto steryl Dimer Dilinoleyl Dimer Dilinoleate 9,30 9,43 9,59 9,30 9,43 9,09 i) Copernicia Cerifera (Carnauba) Wax 3,22 3,26 3,32 3,22 3,26 3,12 i) Helianthus Annuus (Sunflower) Seed Wax 8,59 8,70 8,85 8,59 8,70 8,55 iii) Propylene Carbonate 0,10 0,10 0,10 0,10 0,10 0,10 iv) Isododecane 22,90 - - 22,90 21,79 22,90 iv) 12 Alkanes - 21,75 23,59 - - - iv) Octyldodeca nol 3,08 3,12 - - - - iv) Caprylic / Capric Triglyceride - - - 3,08 - - iv) Butylene Glycol Dicaprylate / Dicaprate - - - - 3,08 - iv) Propylene Glycol Dicaprylate / Dicaprate - - - - - 3,08 Amount - 100% 100% 100% 100% 100% 100%

[0048] The comparative formulations G and H shown in Table 2 reflect the influence of a non-polar oil used instead of the polar component. The preparation was carried out analogously to the formulations shown in Table 1. Table 2: File Part Rohstoff [INCHES] G [Wt%] H [Wt%] iii) Iron Oxides 77491 / 77492 / 77499 30,06 29,55 iii) Ferric Ammonium Ferrocyanide 77510 1,72 1,74 iii) Mica 7,16 7,03 iii) Disteardimonium Hectorite 0,25 0,40 ii) Tocopherol 0,24 0,25 i) Sucrose Triacetate Tetrastearate 7,87 7,98 i) Hydrogenated Castor Oil 5,51 5,58 i) Bis-Behenyl / Isostearyl / Phytosteryl Dimer Dilinoleyl Dimer Dilinoleate 9,30 9,43 i) Copernicia Cerifera (Carnauba) Wax 3,22 3,26 i) Helianthus Annuus (Sunflower) Seed Wax 8,59 8,70 iii) Propylene Carbonate 0,10 0,10 iv) Isododecane 22,90 22,90 iv) Squalane 3,08 - iv) Dimethicone (10 cst) - 3,08 Summe - 100% 100%

[0049] Examples A, B, D, E, and F, as well as Comparative Example C, were water-free and contained a wax component (i) consisting exclusively of natural waxes. All examples were easy to prepare and showed a soft but stable, opaque color release.

[0050] By combining at least one natural wax, at least one hydrocarbon which is volatile at a temperature of 25°C and an air pressure of 1013 hPa and at least one oil which is liquid at a temperature of 25°C and an air pressure of 1013 hPa and has an oil / water interfacial tension of less than 30 mN / m, as in examples A, B, D, E and F, it was possible to obtain a solid preparation with a stable wax structure which showed no tendency to separate, had a uniform application behaviour and was permanently stable in storage.

[0051] The resulting pencil leads were solid wax-based pencil leads and were stored for 12 weeks at 25°C and 40°C and then visually assessed. Pencil leads of formulation A and B after 12 weeks of storage at room temperature (25°C) are shown as examples in Fig. 3 and Fig. 4 shown.

[0052] A pencil lead of formula C after 12 weeks of storage at room temperature (25°C) is in Fig. 5 shown.

[0053] A comparison of the Fig. 3 and Fig. 4 with Fig. Figure 5 shows that the pencil lead of Comparative Example C exhibited efflorescence, visible as small bright spots on the lead surface, while the pencil leads of Examples A and B did not exhibit efflorescence. This is due to the fact that Comparative Example C did not contain octyldodecanol and thus did not contain an oil that was liquid at 25°C and an air pressure of 1013 hPa and had an oil / water interfacial tension of less than 30 mN / m.

[0054] The pencil leads of formulations (examples) D, E and F, which were formulated with caprylic / capric triglyceride, butylene glycol dicaprylate / dicaprate and propylene glycol dicaprylate / dicaprate, respectively, instead of octyldodecanol, gave analogous results to the inventive examples A and B.

[0055] In contrast, the comparative formulations (or comparative examples) G and H, which contained as added components further non-polar oils that were liquid at 25°C and an air pressure of 1013 hPa and had an oil / water interfacial tension of more than 30 mN / m, showed no positive effect with regard to the homogeneity of the mass, lead stability or blooming behavior of incompatible components. List of reference symbols: 1 platinum plate 2 test oil 3 Water QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 102005051862 A1 [0020, 0046]

Claims

[1] Solid preparation comprising: - a wax component consisting of at least one natural wax, - at least one hydrocarbon which is volatile at a temperature of 25°C and an atmospheric pressure of 1013 hPa and - at least one oil which is liquid at a temperature of 25°C and an air pressure of 1013 hPa and has an oil / water interfacial tension of less than 30 mN / m. [2] Preparation according to claim 1, wherein the preparation is free from synthetic and petroleum-based waxes. [3] Preparation according to claim 1 or 2, wherein the amount of the wax component, based on the total mass of the preparation, is 4 to 70 mass%, in particular 5 to 60 mass% and in particular 7 to 40 mass%. [4] Preparation according to one of the preceding claims, wherein the natural wax is a vegetable wax. [5] Preparation according to one of the preceding claims, wherein the volatile hydrocarbon is selected from linear and / or branched hydrocarbons and in particular is selected from C9-C12 alkanes, isododecanes, coconut alkanes, coco-caprylate / caprate, C9-C12 isoalkanes, C11-C15 isoalkanes, dodecanes, C13-15 alkanes, hydrogenated polyisobutenes, hydrogenated polydecene, hydrogenated, poly(C6-14 olefin), hydrogenated vegetable oil, hydrogenate rapeseed alcohol and mixtures thereof. [6] Preparation according to one of the preceding claims, wherein the amount of the volatile hydrocarbon, based on the total mass of the preparation, is 8 to 50 mass%, in particular 9 to 40 mass% and in particular 10 to 35 mass%. [7] Preparation according to one of the preceding claims, wherein the oil having an oil / water interfacial tension of less than 30 mN / m is selected from the group consisting of esters, fatty alcohols, fatty acids, and glycerides, including di- and triglycerides. [8] Preparation according to one of the preceding claims, wherein the oil with an oil / water interfacial tension of less than 30 mN / m is selected from the group consisting of octyldodecanol, caprylic / capric triglyceride, butylene glycol dicaprylate / dicaprate, propylene glycol dicaprylate / dicaprate, dipentaerythrityl pentaisononanoate, diisostearyl malate, isopropyl myristate, isopropyl palmitate and mixtures thereof and in particular octyldodecanol. [9] Preparation according to one of the preceding claims, wherein the amount of liquid oil with an oil / water interfacial tension of less than 30 mN / m, based on the total mass of the preparation, is 0.5 to 25 mass%, in particular 0.8 to 20 mass% and in particular 1 to 10 mass%. [10] Preparation according to one of the preceding claims, further comprising at least one pigment. [11] Preparation according to claim 10, wherein the amount of pigment, based on the total mass of the preparation, is 2 to 50 mass%, in particular 5 to 45 mass% and in particular 8 to 40 mass%. [12] Preparation according to one of the preceding claims, wherein the preparation is anhydrous. [13] Preparation according to one of the preceding claims, wherein the preparation is in the form of a pencil lead. [14] Preparation according to one of the preceding claims, wherein the preparation is a cosmetic preparation. [15] Use of an oil which is liquid at a temperature of 25°C and an air pressure of 1013 hPa and has an oil / water interfacial tension of less than 30 mN / m for reducing or preventing efflorescence on the surface of a solid preparation comprising a wax component comprising at least one natural wax, at least one hydrocarbon which is volatile at a temperature of 25°C and an air pressure of 1013 hPa and the oil which is liquid at a temperature of 25°C and an air pressure of 1013 hPa.

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