Cosmetic cleansing concentrate

Abstract

A cosmetic preparation.

Description

[0001] This invention belongs to the field of beauty and relates to a cleansing concentrate that is diluted with water before application.

[0002] Humans are born with the desire to look beautiful and attractive. While the ideal of beauty has changed over time, the pursuit of a flawless appearance has always been a human goal, as a pleasing appearance increases self-esteem and attractiveness to peers. A crucial part of a beautiful and attractive appearance is the condition and tone of the skin. A component of daily skincare is cleansing, which involves using beauty cleansing products.

[0003] Traditional cleaning agents are typically marketed as liquid, water-based formulations. Analysis of the composition of such formulations shows that they contain a significant amount of water. Typical examples of shower gels are disclosed in WO1994010975A1, WO1993021900A1, and WO2002005758A2.

[0004] Therefore, large quantities of water are transported from suppliers to stores and then to consumers to provide them with their chosen cleaning products. Given that most households are connected to public water supplies, it seems ecologically unwise to send water to places where it can theoretically be used without restriction. By avoiding or reducing water in the products and transporting concentrates in liquid or solid form, transportation costs and associated greenhouse gas emissions can be reduced.

[0005] Therefore, environmentally friendly beauty and cleaning products can also be supplied to consumers in the form of concentrates. Consumers dissolve the concentrate in water at a predetermined ratio to produce the beauty and cleaning product. This form of application conserves water in the production of the concentrate. This results in a reduced environmental impact by minimizing weight, as consumers can typically add water at home.

[0006] This application relates to a liquid concentrate that is diluted by the consumer with a predetermined amount of water before use.

[0007] Typical concentrates are particularly described in WO2016172468A1.

[0008] However, difficulties may arise in the preparation of cleaning concentrates. Typically, a defined viscosity needs to be established after a predetermined amount of water is added by the consumer. This should accordingly allow for common removal from the packaging device. Such a suitable viscosity is in the range of 3000 mPa·s to 5000 mPa·s. Therefore, the cleaning concentrate must already contain a thickening system that allows for automatic viscosity adjustment upon dilution with a predetermined amount of water.

[0009] Especially when sodium lauryl ether sulfate (CAS: 15826-16-1) is used as a surfactant, thickening is achieved by adjusting the salt / sodium chloride content of the preparation. The problem is that preparations containing sodium chloride can lead to corrosion during production. If the preparation is in concentrate form, the salt concentration is relatively higher than that of conventional cleaning products with higher water content. However, a large amount of sodium chloride is required to ensure sufficient thickening.

[0010] Therefore, there is a need for a method to achieve relatively high viscosity in the concentrate at low salt content when consumers dilute the concentrate with a predetermined amount of water.

[0011] The present invention is surprisingly able to solve this problem.

[0012] This invention provides a beauty concentrate, the beauty concentrate comprising, based on the total weight of the concentrate, a) A surfactant system comprising 20% ​​to 70% by weight, wherein the surfactant system contains at least sodium lauryl ether sulfate. b) Sodium chloride, and c) 1,3-Butanediol and / or 1,2-Propanediol.

[0013] It has been surprisingly discovered that the combination according to the invention makes it possible to provide a concentrate that, when diluted with water, forms a viscosity within a desired range. The addition of 1,3-butanediol and / or 1,2-propanediol surprisingly results in more effective salt thickening in the concentrate according to the invention, thereby allowing for lower salt concentrations.

[0014] The present invention further provides a method for providing beauty and cleansing products, the method comprising the following steps: a) Provide a concentrate according to the invention b) Add a predetermined amount of water to the concentrate. c) The water is mixed with the concentrate to form the cleaning product.

[0015] The present invention further provides the use of 1,3-butanediol and / or 1,2-propanediol in a concentrate comprising 20% ​​to 70% by weight of a surfactant system, the surfactant system comprising at least sodium lauryl ether sulfate and sodium chloride for thickening the concentrate upon addition of water.

[0016] Unless otherwise stated, all tests and measurements are performed under “standard conditions”. The term “standard conditions” refers to 20°C, 10¹³ hPa, and 50% relative humidity.

[0017] The term "skin" specifically refers to human skin.

[0018] If weight percentages (wt%) are given below without mentioning a specific composition or mixture, these amounts are always based on the total weight of the concentrate. If component / substance / group of substances ratios are disclosed below, these ratios refer to the weight ratios of the components / substances / groups of substances.

[0019] If the weight percentage range of the components of the concentrate is given below, then the disclosure of this application also includes all individual values ​​within these weight percentage ranges in increments of 0.1 wt%.

[0020] In the context of this disclosure, expressions such as "according to the invention," "advantageous according to the invention," and "advantageous in the sense of the invention" always refer not only to the concentrates according to the invention, but also to the uses and methods according to the invention.

[0021] In the sense of this disclosure, the term "free of" should be understood to mean that, based on the total weight of the concentrate, the proportion of the substance does not exceed 0.1% by weight, and in particular 0% by weight. Therefore, accidental introduction via impurities should not result in exclusion from the scope of protection.

[0022] The term "emulsifier" should be understood to refer to all substances listed as "emulsifier" in the 13th edition of the International Cosmetic Ingredient Dictionary and Handbook, 2010 (ISBN 1-882621-47-6). The term "surfactant" should be understood to refer to all substances listed as "surfactant" in the 13th edition of the International Cosmetic Ingredient Dictionary and Handbook, 2010 (ISBN 1-882621-47-6).

[0023] Viscosity values ​​given in this disclosure refer to measurements taken at 25°C in a 150 ml wide-mouth flask (VWR: 807-0001) using a Rheomat R 123 from proRheo. The Rheomat R 123 from proRheo GmbH is a rotational viscometer, where the measuring body rotates within the analyte. The force required to rotate the measuring body within the sample at a specified speed is measured. Viscosity is calculated based on this torque, the rotational speed of the measuring body, and the geometry of the measuring system used. A measuring body of size 1 (product number 200 0191) suitable for a viscosity range up to 10,000 mPa·s and a speed range of 62.5 rpm is used.

[0024] If an average is given in this publication, it always refers to the arithmetic mean.

[0025] If molecular weight data of the polymer are given in this disclosure, these data involve measurements by light scattering.

[0026] According to the invention, the concentrate contains 20% to 70% by weight of a surfactant system, which at least comprises sodium lauryl ether sulfate. Advantageously, according to the invention, the total proportion of the surfactant system, based on the total weight of the concentrate, is 20% to 70% by weight, preferably 25% to 60% by weight, and especially 35% to 50% by weight, wherein at least sodium lauryl ether sulfate is present.

[0027] The proportion of sodium lauryl ether sulfate is advantageously from 4% to 40% by weight, preferably from 7% to 35% by weight, and especially from 10% to 30% by weight, in each case based on the total weight of the concentrate.

[0028] By definition, all surfactants in the concentrate are part of the surfactant system, and therefore no additional surfactants can exist outside of the surfactant system.

[0029] Advantageous according to the invention is the presence of at least one amphoteric and / or facultative zwitterionic surfactant as an additional surfactant. Advantageously, the amphoteric and / or facultative zwitterionic surfactants that can be used include... - Acyl / dialkylethylenediamine, especially sodium acylamphoacetate, disodium acylamphodipropionate, disodium alkylamphodiacetate, disodium cocoamphodiacetate, sodium cocoamphomonoacetate, sodium acylamphohydroxypropylsulfonate, disodium acylamphodiacetate, and sodium acylamphopropionate; -N-alkylamino acids, especially aminopropyl alkyl glutamide, alkylaminopropionic acid, sodium alkylimidodipropionate, and lauroamphocarboxyglycinate. - Betaine, especially cocobetaine and cocamidopropyl betaine; and -Sultaine, especially lauryl hydroxysulftaine.

[0030] Particularly advantageous are amphoteric and / or zwitterionic surfactants known by INCI names such as sodium cocoamphoacetate, disodium cocoamphodiacetate, sodium cocoamphopropionate, disodium cocoamphodipropionate, Coco Betaine, Lauryl Betaine, and / or Cocamidopropyl Betaine. Cocamidopropyl Betaine is selected as the most preferred amphoteric and / or zwitterionic surfactant from the group described above.

[0031] It is particularly advantageous when cocamidopropyl betaine is present in a proportion of 4% to 20% by weight, preferably 10% to 14% by weight, based on the total weight of the concentrate.

[0032] According to the invention, it is further advantageous when at least one additional anionic surfactant is present. Advantageously, the additional anionic surfactants that can be used according to the invention include sulfates other than sodium lauryl ether sulfate, such as… - Substances that are distinct from sodium lauryl ether sulfate, particularly ammonium lauryl ether sulfate, magnesium lauryl ether sulfate, MIPA lauryl ether sulfate, TIPA lauryl ether sulfate, sodium myristyl ether sulfate, and sodium C12-13 pareth sulfate (known under the INCI name); - Alkyl sulfates, especially sodium lauryl sulfate, ammonium lauryl sulfate and TEA lauryl sulfate. And sulfonic acids and salts, such as - Acyl isethionate, especially sodium / ammonium cocoyl isethionate. -alkylaryl sulfonate; alkyl sulfonates, especially sodium cocomonoglyceride sulfate, sodium C12-14 olefin sulfonate, sodium lauryl sulfoacetate, and PEG-3 cocamide sulfate. - Sulfosuccinate salts, especially dioctylsodium sulfosuccinate, disodium laurethsulfosuccinate, disodium lauryl sulfosuccinate, disodium undecylenamido MEA-sulfosuccinate, and PEG-5 lauryl citrate sulfosuccinate.

[0033] Further advantageously, the anionic surfactants that can be used include acyl amino acids and their salts, such as... - Acyl glutamate, especially sodium acylglutamate, di-TEA-palmitoyl aspartate and sodium caprylic / capric glutamate. - Acyl peptides, especially palmitoyl-hydrolyzed milk protein, cocoyl-hydrolyzed soy protein, and sodium / potassium cocoyl-hydrolyzed collagen. -Acyl sarcosinate, especially myristoyl sarcosine, TEA-lauroyl sarcosinate, sodium lauroyl sarcosinate, and sodium cocoyl sarcosinate. - Acyl taurate, especially sodium lauroyl taurate and sodium methyl cocoyl taurate; - Acyl lactylate, especially lauroyllactylate and caproyl lactylate. -Acyl alaninate; Acyl glycinate, especially sodium cocoyl glycinate.

[0034] Further advantageously, the anionic surfactants that can be used include the group consisting of the specified carboxylic acids and carboxylic acid derivatives. - Carboxylic acids, especially lauric acid, aluminum stearate, magnesium alkanolate, and zinc undecylenate. -Ester carboxylic acid, such as calcium stearoyllactylate, laureth-6 citrate, and sodium PEG-4-lauramide carboxylate. -Ether carboxylic acid, such as sodium laureth-13-carboxylate and sodium PEG-6-cocamidecarboxylate. And phosphate esters and phosphates, such as DEA-oleth-10 phosphate and dilaureth-4 phosphate.

[0035] Furthermore, it is advantageous when the concentrate contains at least one nonionic surfactant. Advantageously, the nonionic surfactants that can be used include: - Fatty acid alkanolamides of general formula (II) Where R 3 It is a straight-chain or branched, saturated or unsaturated alkyl or alkenyl group having 8 to 24 carbon atoms, where R4 represents either a hydrogen atom or a -(CH2)nOH group, where n can be an integer of 2 or 3, provided that at least one of the groups R4 is a -(CH2)nOH group, for example, cocamide MEA / DEA / MIPA. - Addition products of ethylene oxide and fatty acid alkanolamide -1 mol to 50 mol of C8-C30 fatty acid monoesters and / or diesters of the addition products of ethylene oxide and glycerol; -2 mol to 50 mol of ethylene oxide and / or 0 mol to 5 mol of propylene oxide with straight-chain or branched fatty alcohols having 8 to 30 carbon atoms, fatty acids having 8 to 30 carbon atoms, and alkylphenols having 8 to 15 carbon atoms in their alkyl groups; and - Alkyl polyglycosides, such as lauryl glucoside, decyl glucoside, caprylyl / capryl glucoside and coco-glucoside, are preferred.

[0036] An advantageous embodiment of the invention is characterized in that, as nonionic surfactants, they contain alkyl polysaccharides, particularly decyl glucoside, octyl / decyl glucoside, and / or cocoyl glucoside. If the cosmetic cleansing concentrate according to the invention contains alkyl polysaccharides, particularly decyl glucoside, octyl / decyl glucoside, and / or cocoyl glucoside, then the proportion of alkyl polysaccharides is preferably 2% to 20% by weight, and more preferably 3% to 10% by weight, based on the total weight of the cleansing concentrate.

[0037] According to the invention, the concentrate contains sodium chloride. Advantageously, according to the invention, the proportion of sodium chloride is 1% to 10% by weight, preferably 2% to 7% by weight, and particularly preferably 3.5% to 5.7% by weight, based on the total weight of the clean concentrate.

[0038] The concentrate according to the invention advantageously further comprises 1,3-butanediol. Preferably, the proportion of 1,3-butanediol is 1% to 17% by weight, more preferably 2% to 7% by weight, and particularly preferably 3.1% to 5.7% by weight, based on the total weight of the clean concentrate.

[0039] The concentrate according to the invention advantageously further comprises 1,2-propanediol. Preferably, the proportion of 1,2-propanediol is 1% to 17% by weight, more preferably 2% to 7% by weight, and particularly preferably 3.1% to 5.7% by weight, based on the total weight of the clean concentrate.

[0040] The concentrate according to the invention advantageously further comprises 1,2-propanediol and 1,3-butanediol. Preferably, the total proportion of 1,2-propanediol and 1,3-butanediol is from 1% to 17% by weight, more preferably from 2% to 7% by weight, and particularly preferably from 3.1% to 5.6% by weight, based on the total weight of the clean concentrate.

[0041] It is further advantageous when additives are present to preserve the concentrate. In particular, sodium benzoate and / or sodium salicylate are preferred. Therefore, the presence of sodium benzoate is preferred, and more preferably when the total content of sodium benzoate is 1.5% to 3.0% by weight based on the total weight of the concentrate. The presence of sodium salicylate is preferred, and more preferably when the total content of sodium salicylate is 1.3% to 2.5% by weight based on the total weight of the concentrate.

[0042] It is further advantageous when the concentrate contains citric acid and / or its corresponding salts. If these citric acids and / or their corresponding salts are present, it is preferred that the total proportion, based on the total weight of the clean concentrate, is 0.5% to 5.5% by weight, preferably 1.5% to 4.5% by weight, and particularly preferably 2.1% to 3.5% by weight.

[0043] A preferred embodiment of the invention is further characterized by the presence of at least one pearlescent agent. These pearlescent agents are preferably selected from the group consisting of: ethylene glycol distearate, glyceryl stearate, PEG-3 distearate, and mixtures thereof.

[0044] If one or more pearlescent agents selected from the group consisting of ethylene glycol distearate, glyceryl stearate, PEG-3 distearate, and mixtures thereof are present, it is preferred that the total proportion is from 0.5% to 4.5% by weight, preferably from 1.0% to 3.0% by weight, based on the total weight of the clean concentrate.

[0045] It has been surprisingly found that, even after 3 days of dilution of the concentrate according to the invention, the pearlescent material in the formulation still maintains a uniform appearance. Therefore, the produced formulation is stored for 3 days after mixing.

[0046] Based on the total weight of the concentrate, the concentrate preferably further contains less than 45% by weight, particularly less than 43% by weight, and most preferably less than 42% by weight of water. Based on the total weight of the concentrate, the water content of the concentrate advantageously is at least 10% by weight, preferably at least 20% by weight, and particularly preferably at least 25% by weight.

[0047] The concentrate of the present invention may further comprise one or more flavorings that are liquid under standard conditions. Based on the total weight of the concentrate, the total proportion of liquid flavorings under standard conditions is advantageously from 1.5% to 4.5% by weight.

[0048] Further preferred is when, in the context of this invention, the concentrate does not contain pentylene glycol.

[0049] To provide a beauty and cleansing concentrate, the concentrate according to the invention is advantageously mixed with water at a weight ratio (concentrate:water) of 1:10 to 1:1, preferably 1:8 to 1:1.5, and particularly preferably 1:4 to 1:2. It has been surprisingly found that the concentrate can dissolve particularly effectively in water even when manually mixed by shaking alone.

[0050] The preparations according to the invention may further contain additional additives and active substances, provided that they are not incompatible with the preparations according to the invention.

[0051] Example The following examples are intended to illustrate the invention, but are not intended to limit the invention to these examples. The numerical values ​​used in the examples are weight percentages based on the total weight of the corresponding preparations.

[0052] The embodiments of the present invention are abbreviated as "Example X", where X also represents a consecutive number. The formulations are hereinafter referred to as "Comparative Example X", where X is a consecutive number and is a comparative example not based on the present invention.

[0053] For comparative experiments, the following formula was initially provided.

[0054] Table 1 Transparent Formula The above lists water as present as "balance to 100%". This describes the corresponding formulation as totaling 100%, with any unspecified portion consisting of water.

[0055] Table 2 Opaque Formula The formulations listed in Tables 1 and 2 all contain additional salt. This is then mixed with water to produce a standard cleaning product. The viscosity of the respective mixtures was measured using the method described above 24 hours after the cleaning product production. Table 3 below indicates the corresponding mixing ratios: Table 3 Mixing ratios used for viscosity measurements (all quantities listed are by weight, based on the weight of the resulting cleaning product): The viscosity values ​​obtained for all tested concentrates are listed in Table 4. Table 4 shows the amount of NaCl added in addition to the base amount already present in the preparation.

[0056] Table 4 It has been surprisingly discovered that the glycols of the present invention allow for effective viscosity increases even at relatively low salt contents. This is particularly true in the case of propylene glycol, where low salt contents can be used. In contrast, pentanediol is unusable because it does not allow for sufficient viscosity increases.

[0057] The following lists other concentrates that can be mixed with water to create beauty and cleansing products. The weight ratio of concentrate to water is typically 1:4 to 1:2.

[0058] Table 5: Opaque Example Formulations Table 6: Transparent Concentrate Table 7: Opaque Example Formulations Table 8: Transparent Example Formulations

Claims

1. A beauty cleansing concentrate, said beauty cleansing concentrate comprising, based on the total weight of said concentrate, a) A surfactant system comprising 20% ​​to 70% by weight, wherein the surfactant system comprises at least sodium lauryl ether sulfate. b) Sodium chloride, and c) 1,3-Butanediol and / or 1,2-Propanediol.

2. The concentrate according to claim 1, characterized in that, When the total weight of the concentrate is used, the total proportion of the surfactant system is 20% to 70% by weight, preferably 25% to 60% by weight, and especially 35% to 50% by weight.

3. The concentrate according to claim 1 or 2, characterized in that, The proportion of sodium lauryl ether sulfate is advantageously from 4% to 40% by weight, preferably from 7% to 35% by weight, and especially from 10% to 30% by weight, in each case based on the total weight of the concentrate.

4. The concentrate according to any one of the preceding claims, characterized in that, The surfactant system includes at least one amphoteric and / or facultative zwitterionic surfactant.

5. The concentrate according to claim 4, characterized in that, The amphoteric and / or facultative zwitterionic surfactants include sodium cocoamphoacetate, disodium cocoamphodiacetate, sodium cocoamphopropionate, disodium cocoamphopropionate, cocoyl betaine, lauryl betaine, and / or cocamidopropyl betaine.

6. The concentrate according to claim 4, characterized in that, Based on the total weight of the concentrate, the proportion of cocamidopropyl betaine is from 4% to 20% by weight, preferably from 10% to 14% by weight.

7. The concentrate according to any one of the preceding claims, characterized in that, The concentrate includes at least one nonionic surfactant.

8. The concentrate according to claim 7, characterized in that, The nonionic surfactant includes at least one alkyl polysaccharide, wherein the alkyl polysaccharide is preferably selected from decyl glucoside, octyl / decyl glucoside and / or cocoyl glucoside.

9. The concentrate according to claim 8, characterized in that, Based on the total weight of the concentrate, the proportion of the alkyl polysaccharide is 2% to 20% by weight, preferably 3% to 10% by weight.

10. The concentrate according to any one of the preceding claims, characterized in that, Based on the total weight of the concentrate, the proportion of sodium chloride is 1% to 10% by weight, preferably 2% to 7% by weight, and particularly preferably 3.5% to 5.7% by weight.

11. The concentrate according to any one of the preceding claims, characterized in that, Based on the total weight of the concentrate, the proportion of 1,3-butanediol is from 1% to 17% by weight, preferably from 2% to 7% by weight, and particularly preferably from 3.1% to 5.7% by weight.

12. The concentrate according to any one of the preceding claims, characterized in that, Based on the total weight of the concentrate, the proportion of 1,2-propanediol is from 1% to 17% by weight, preferably from 2% to 7% by weight, and particularly preferably from 3.1% to 5.7% by weight.

13. The concentrate according to any one of the preceding claims, characterized in that, The concentrate does not contain pentylene glycol.

14. A method for providing a beauty cleansing product, the method comprising the following steps: a) Provide the concentrate according to any one of the preceding claims. b) Add a predetermined amount of water to the concentrate. c) The water is mixed with the concentrate to form the cleaning product.

15. The method according to claim 14, characterized in that, The concentration is mixed with water at a weight ratio of 1:10 to 1:1, preferably 1:8 to 1:1.5, and particularly preferably 1:4 to 1:

2.

16. Use of 1,3-butanediol and / or 1,2-propanediol in a concentrate, said concentrate comprising: a) A surfactant system comprising 20% ​​to 70% by weight, wherein the surfactant system comprises at least sodium lauryl ether sulfate. b) and sodium chloride This is used to thicken the concentrate when water is added.

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