DE102019209058A1 - High consistency cleaning product - Google Patents

Abstract

Cosmetic pasty cleaning preparation containing an amino acid surfactant and an unbranched fatty alcohol, which can be provided in a crucible.

Description

The present invention describes a cleaning preparation which has such a high consistency that the preparation is suitable for removal from a crucible. Furthermore, the preparation is mild, so that the preparation is preferably intended for facial cleansing.

Cleansing products are designed to cleanse the skin and hair. After the cleaning process, the user ideally has a feeling of cleanliness, freshness and well-being. Man has always had the need to purify, i.e. Removing dirt from the skin or hair. The aim of the cleaning process is to remove dirt from the surface of the skin. The film of dirt consists of solid or liquid components that have got onto the skin from the outside. The dirt film also includes excess skin lipids and dead body cells. With the help of surface-active ingredients in the cleaning compositions, the components of the dirt film get into the washing liquor and are removed from the skin by the rinsing process. In addition to removing the film of dirt, however, surface lipids of the skin, for example barrier lipids, can also be dissolved to a limited extent by the surface-active substances in the cleaning preparations and removed during the rinsing process. The loss of skin lipids can lead to symptoms of dehydration and skin irritation. If products are intended for facial cleansing, this is all the more true because the skin of the face is a sensitive skin and this is especially true of the eye area.

Various concepts are known for reducing the irritative effects of certain surfactants in cleaning preparations. One possibility is to choose particularly mild surfactants. Another possibility is the use of moisturizing ingredients in cleaning preparations. The avoidance of anionic surfactants based on soap also helps to reduce the irritation potential of cleaning preparations.

Over time, the cleaning processes have changed, as have the products that are used for cleaning. Nowadays, special cleaning products are often used, e.g. B. for the body, for the hair, for the face, for the feet and others. The respective cleaning products are again offered in different versions.

Despite this multitude of different product forms, consumer surveys repeatedly express the desire for new, innovative product forms.

There was therefore a need to provide a cleansing preparation that is so mild that it can be used in the facial area and, on the other hand, to choose a product form for this cleansing preparation that is not common.

A concept was developed to offer cleaning preparations in one pan. Cleaning preparations are usually offered in dispensers or tubes, but also in cans, then in the present case in aerosol form. In order to enable it to be removed from a dispenser or a tube, the preparation must have a certain flowability. This means that the viscosity must not be too high to allow easy removal from the tube / dispenser.

Different requirements apply to removal from a crucible. The preparation must be pasty for this. This property is usually determined using a consistency specification. The aim was to find agents that bring about the pasty properties of the cleaning preparation without adversely affecting the other properties, cleaning performance and mildness.

The StdT contains documents that include reveal various components that can influence the consistency of a preparation.

EP 2682161 A2 describes that there are pH-sensitive amino acid surfactants that have a maximum viscosity in a certain pH range. Sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, sodium cocoyl glutamate and sodium cocoylalanate are named as pH-sensitive amino acid surfactants.

EP 2320862 A1 ( WO 2011/025898 A1 ) discloses preparations for cleaning hair that contain amino acid surfactants with a specific structure, glyceryl ethers with a specific structure and fatty alcohols. These components are intended to help ensure that the foam develops quickly and has sufficient stability and creaminess.

In the document EP 3068368 A2 ( WO 2015/071298 A2 ) cleaning preparations are described that can form a lamellar structure. These preparations should foam well and also be stable in storage. These preparations contain an anionic surfactant of the glycinate type.

In none of these documents is a pasty preparation explicitly disclosed and there is also no disclosure of how a pasty preparation can be produced in a suitable manner.

• - wenigstens ein Aminosäuretensid, insbesondere eine Acylglycinsäure und/oder ein physiologisch verträgliches Salz davon, in einer Menge von 2 bis 20 Gew.-%, bezogen auf das Gesamtgewicht der Zubereitung,
• - wenigstens ein Verdickungsmittel, insbesondere ein Acrylat-basiertes Verdickungsmittel in einer Menge von 0,1 bis 5,0 Gew.-%, bezogen auf das Gesamtgewicht der Zubereitung und
• - wenigstens ein unverzweigter Fettalkohol, mit einer Kettenlänge von 12 bis 20 Kohlenstoffatomen, in einer Menge von 0,5 bis 5,0 Gew.-%, bezogen auf das Gesamtgewicht der Zubereitung

in der Zubereitung enthalten sind und wobei der pH-Wert der Zubereitung zwischen 4,0 und 9,0 liegt und wobei in der Zubereitung das Gewichtsverhältnis von dem wenigstens einen Aminosäuretensid zu dem wenigstens einen Fettalkohol 15:1 bis 2:1, bevorzugt 12:1 bis 3:1, insbesondere bevorzugt 10:1 bis 5:1 beträgt.Surprisingly, a pasty preparation could be obtained by

• - At least one amino acid surfactant, in particular an acylglycic acid and / or a physiologically acceptable salt thereof, in an amount of 2 to 20% by weight, based on the total weight of the preparation,
• - At least one thickener, in particular an acrylate-based thickener in an amount of 0.1 to 5.0 wt .-%, based on the total weight of the preparation and
• - At least one unbranched fatty alcohol, with a chain length of 12 to 20 carbon atoms, in an amount of 0.5 to 5.0% by weight, based on the total weight of the preparation

are contained in the preparation and the pH of the preparation is between 4.0 and 9.0 and the weight ratio of the at least one amino acid surfactant to the at least one fatty alcohol 15: 1 to 2: 1, preferably 12: 1 to 3: 1, particularly preferably 10: 1 to 5: 1.

The preparation is a cosmetic preparation and is intended for cleaning the skin, in particular facial skin. For this purpose, it is advantageous if the preparation is applied to the skin and, after a short exposure time (5 seconds to 5 minutes), is removed, preferably rinsed off with water.

The preparation is an aqueous preparation; It is advantageous if the preparation contains 50 to 80% by weight, in particular 60 to 70% by weight, of water.

• wobei R₁ ein gesättigter oder ungesättigter, verzweigter oder unverzweigter Alkylrest ist,
• R₂ ein Wasserstoffatom oder eine Methylgruppe ist,
• R₃ ein Wasserstoffatom, COO^-M⁺, CH₂COO^-M⁺ oder COOH ist,
• n eine Zahl zwischen 0 und 2 ist,
• X COO^- ist und
• M unabhängig voneinander ein Wasserstoffatom [H⁺], Na⁺ oder K⁺ ist.

The preparation according to the invention contains at least one amino acid surfactant, which can be described with the following formula:

• where R _{1 is} a saturated or unsaturated, branched or unbranched alkyl radical,
• R _{2 is} a hydrogen atom or a methyl group,
• R _{3 is} a hydrogen atom, COO ^- M ⁺ , CH ₂ COO ^- M ⁺ or COOH,
• n is a number between 0 and 2,
• X COO ^- is and
• M is independently a hydrogen atom [H ⁺ ], Na ⁺ or K ⁺ .

It is preferred if the at least one amino acid surfactant is an acyl glycinate, more preferably a sodium cocoyl glycinate. Sodium cocoyl glycinate can be obtained, for example, from Clariant under the trade name Hostapon SG.

The at least one amino acid surfactant is contained in the preparation according to the invention in an amount of 2 to 20% by weight, preferably 3 to 15% by weight, more preferably 4 to 10% by weight, based on the total weight of the preparation.

The preparation according to the invention contains at least one thickener. Thickeners can also be called "hydrocolloids", a more precise term is the term "hydrophilic colloid". Hydrocolloids are macromolecules that have a largely linear shape and intermolecular forces of interaction that enable secondary and main valence bonds between the individual molecules and thus the formation of a network-like structure. They are partially water-soluble natural or synthetic polymers that form gels or viscous solutions in aqueous systems. They increase the viscosity of the water by either binding water molecules (hydration) or by absorbing and enveloping the water in their interwoven macromolecules, while at the same time restricting the mobility of the water. Such water-soluble polymers represent a large group of chemically very different natural and synthetic polymers whose common feature is their solubility or swellability in water or aqueous media. A prerequisite for this is that these polymers have a sufficient number of hydrophilic groups for solubility or swellability in water and that they are not excessively crosslinked. The hydrophilic groups can be nonionic, anionic or cationic in nature.

• - organische, natürliche Verbindungen, wie beispielsweise Agar-Agar, Carrageen, Tragant, Gummi arabicum, Alginate, Pektine, Polyosen, Guar-Mehl, Johannisbrotbaumkernmehl, Stärke, Dextrine, Gelatine, Casein,
• - organische, abgewandelte Naturstoffe, wie z. B. Carboxymethylcellulose und andere Celluloseether, Hydroxyethyl- und -propylcellulose und dergleichen,
• - organische, vollsynthetische Verbindungen, wie z. B. Polyacryl- und Polymethacryl-Verbindungen, Vinylpolymere, Polycarbonsäuren, Polyether, Polyimine, Polyamide,
• - anorganische Verbindungen, wie z. B. Polykieselsäuren, Tonmineralien wie Montmorillonite, Zeolithe, Kieselsäuren.

The group of cosmetically and dermatologically relevant hydrocolloids can be divided into:

• - organic, natural compounds, such as agar-agar, carrageenan, tragacanth, gum arabic, alginates, pectins, polyoses, guar flour, carob gum, starch, dextrins, gelatine, casein,
• - organic, modified natural substances, such as B. carboxymethyl cellulose and other cellulose ethers, hydroxyethyl and -propyl cellulose and the like,
• - organic, fully synthetic compounds, such as B. polyacrylic and polymethacrylic compounds, vinyl polymers, polycarboxylic acids, polyethers, polyimines, polyamides,
• - inorganic compounds, such as. B. polysilicic acids, clay minerals such as montmorillonites, zeolites, silicas.

Hydrocolloids preferred according to the invention are organic, fully synthetic compounds, in particular polyacrylic and / or polymethacrylic compounds.

Polyacrylates can be homopolymers of acrylic acid, which are then referred to as carbomers. An advantageous carbomer can be obtained from Lubrizol Advanced Materials under the trade name Carbopol 980, for example.

Polyacrylates or polymethacrylates can also be copolymers which, in addition to acrylic acid and / or methacrylic acid, have been synthesized from other monomers. It is advantageous according to the invention if the further monomers are alkyl acrylates and / or alkyl methacrylates, particularly advantageous with alkyl radicals having 10 to 30 carbon atoms (C10-C30). Such a polymer is, for example, an Acrylates / C10-C30 Alkylcryate Crosspolymer (INCI name), which is available from Lubrizol Advanced Materials under the trade name Carbopol ETD 2020.

In the preparation according to the invention, the at least one thickener is present in an amount of 0.1 to 5.0% by weight, preferably 0.5 to 2.5% by weight, particularly preferably 0.5 to 1.5% by weight %, based on the total weight of the preparation.

The preparation according to the invention contains at least one unbranched fatty alcohol, with a chain length of 12 to 20 carbon atoms, in an amount of 0.5 to 5.0% by weight, preferably 0.5 to 2.0% by weight, based on the Total weight of the preparation.

The fatty alcohols according to the invention can be described by the following formula: R ₄ - OH

Where R4 is an unbranched, saturated alkyl radical with 12 to 20 carbon atoms. It is preferred if the alkyl radical has 14 to 18 carbon atoms. It is particularly preferred if cetyl alcohol is contained. It is also particularly preferred if the fatty alcohol is only in the form of cetyl alcohol and no other fatty alcohols are contained.

The pH of the preparation according to the invention is between 4.0 and 9.0, preferably between 4.5 and 6.5. The pH value can be adjusted and kept stable with the agents customary in the technical field of cosmetics. According to the invention, however, it is preferred if a base is added first; it is particularly preferred if the base is added in two successive steps. It is preferred according to the invention if the base is an inorganic compound, particularly preferably sodium hydroxide and / or potassium hydroxide, more particularly preferably sodium hydroxide.

After adding the base, the pH value can be lowered again with an acid. According to the invention it is preferred if the acid is an organic acid, citric acid is particularly preferred.

It is advantageous if further surfactants are contained in the preparation according to the invention. These further surfactants can be selected from the group of anionic surfactants and / or amphoteric surfactants, with the proviso that the at least one amino acid surfactant is not included in the group of further anionic surfactants.

• - Carbonsäuren und Derivate, wie
  • • Carbonsäuren und deren Salze, beispielsweise Caprinsäure, Laurinsäure/-salz, Aluminiumstearat, Magnesiumalkanolat und Zinkundecylenat, Stearinsäure/-salz, Palmitinsäure/-salz, Myristinsäure/-salz,
  • • Ester-Carbonsäuren, beispielsweise Calciumstearoyllactylat, Laureth-6-Citrat und Natrium PEG-4-Lauramidcarboxylat,
  • • Ether-Carbonsäuren, beispielsweise Natriumlaureth-13-Carboxylat und Natrium PEG-6-Cocamide Carboxylat,
• - Phosphorsäureester und Salze, wie beispielsweise DEA-Oleth-10-Phosphat und Dilaureth-Phosphat,
• - Sulfonsäuren und Salze, wie
  • • Acyl-isethionate, z.B. Natrium-/ Ammoniumcocoyl-isethionat, Natrium Lauryl Methylisethionate,
  • • Alkylarylsulfonate,
  • • Alkylsulfonate, beispielsweise Natriumcocosmonoglyceridsulfat, Natrium C12-14 Olefin-sulfonat, Natriumlaurylsulfoacetat und Magnesium PEG-3 Cocamidsulfat,
  • • Sulfosuccinate, beispielsweise Dioctylnatriumsulfosuccinat, Dinatriumlaurethsulfosuccinat, Dinatriumlaurylsulfosuccinat, Dinatriumundecylenamido-MEA-Sulfosuccinat und PEG-5 Laurylcitrat Sulfosuccinat.
  sowie
• - Schwefelsäureester, wie
  • • Alkylethersulfat mit unterschiedlichen Ethoxylierungsgraden und deren Gemische, beispielsweise Natrium-, Ammonium-, Magnesium-, MIPA-, TIPA-Laureth-X-sulfat, Natriummyreth-X-sulfat und Natrium C12-13-Pareth-X-sulfat, mit X = 1-5 Ethoxygruppen.
  • • Alkylsulfate, beispielsweise Natrium-, Ammonium- und TEA-Laurylsulfat, Natrium- Ammonium- und TEA-Cocosulfat.

Suitable further anionic surfactants can be selected from:

• - Carboxylic acids and derivatives, such as
  • • Carboxylic acids and their salts, for example capric acid, lauric acid / salt, aluminum stearate, magnesium alkanolate and zinc undecylenate, stearic acid / salt, palmitic acid / salt, myristic acid / salt,
  • • Ester carboxylic acids, for example calcium stearoyl lactylate, laureth-6 citrate and sodium PEG-4 lauramidecarboxylate,
  • • Ether-carboxylic acids, for example sodium laureth-13-carboxylate and sodium PEG-6-cocamide carboxylate,
• - phosphoric acid esters and salts, such as DEA-oleth-10-phosphate and dilaureth-phosphate,
• - Sulphonic acids and salts, such as
  • • Acyl isethionate, e.g. sodium / ammonium cocoyl isethionate, sodium lauryl methyl isethionate,
  • • alkylarylsulfonates,
  • • alkyl sulfonates, for example sodium coconut monoglyceride sulfate, sodium C12-14 olefin sulfonate, sodium lauryl sulfoacetate and magnesium PEG-3 cocamide sulfate,
  • • Sulfosuccinates, for example dioctyl sodium sulfosuccinate, disodium laureth sulfosuccinate, disodium lauryl sulfosuccinate, disodium undecylenamido-MEA sulfosuccinate and PEG-5 lauryl citrate sulfosuccinate.
  such as
• - sulfuric acid esters, such as
  • • Alkyl ether sulfate with different degrees of ethoxylation and mixtures thereof, for example sodium, ammonium, magnesium, MIPA, TIPA-Laureth-X-sulfate, sodium myreth-X-sulfate and sodium C12-13-pareth-X-sulfate, with X = 1-5 ethoxy groups.
  • • Alkyl sulfates, for example sodium, ammonium and TEA lauryl sulfate, sodium ammonium and TEA coconut sulfate.

According to the invention, it is also advantageous to select the further surfactants from the group of alkyl ether sulfates; it is particularly further advantageous to select lauryl ether sulfate.

It is particularly advantageous according to the invention if the preparation according to the invention does not contain any soap-based surfactants. Soaps include understood the water-soluble sodium or potassium salts of saturated and unsaturated higher fatty acids.

• - Acyl-/dialkylethylendiamin, beispielsweise Natriumacylamphoacetat, Dinatriumacylamphodipropionat, Dinatriumalkylamphodiacetat, Dinatrium Cocoamphodiacetat, Dinatrium Cocoamphomonoacetat, Natriumacylamphohydroxypropylsulfonat, Dinatriumacylamphodiacetat und Natriumacylamphopropionat,
• - N-Alkylaminosäuren, beispielsweise Aminopropylalkylglutamid, Alkylaminopropions-äure, Natriumalkylimidodipropionat und Lauroamphocarboxyglycinat.
• - Alkylbetaine, beispielsweise Coco Betaine,
• - Alkylamidopropylbetaine, beispielsweise Cocoamidopropyl Betaine,
• - Sultaine, beispielsweise Lauryl Hydroxy Sultaine.

Suitable amphoteric surfactants can be selected from:

• - Acyl- / dialkylethylenediamine, for example sodium acylamphodipropionate, disodium acylamphodipropionate, disodium alkylamphodiacetate, disodium cocoamphodiacetate, disodium cocoamphomonoacetate, sodium acylamphohydroxypropyl sulfonate, disodium acylamphodampiacetate and sodium acylamphodiacetate,
• - N-alkylamino acids, for example aminopropylalkylglutamide, alkylaminopropionic acid, sodium alkylimidodipropionate and lauroamphocarboxyglycinate.
• - alkyl betaines, for example coco betaines,
• - alkylamidopropyl betaine, for example cocoamidopropyl betaine,
• - Sultaines, for example Lauryl Hydroxy Sultaine.

It is further advantageous according to the invention to select the further surfactants from the group of the alkyl betaines; it is particularly further advantageous to choose cocobetaines.

If further surfactants are contained in the preparation according to the invention, these are present with a total content of 2 to 11% by weight, preferably 2 to 8% by weight, based on the total weight of the preparation. It is advantageous if the further anionic surfactants with a content of 2 to 5 wt .-%, based on the total weight of the preparation and / or the amphoteric surfactants with a content of 2 to 6 wt .-%, based on the total weight of the preparation. The content of the at least one amino acid surfactant is not included in the total content of the further surfactants.

The preparation according to the invention can advantageously contain at least one preservative. Preservatives are those preserving substances that are used in accordance with the Cosmetics Ordinance for Germany and in accordance with Regulation (EC) No. 1223/2009 about cosmetic products for use in cosmetic products are approved for Europe.

The at least one preservative can advantageously be selected from the group consisting of phenoxyethanol, methyl paraben, ethyl paraben, benzoic acid and / or a physiological salt thereof, in particular sodium benzoate, sorbic acid and / or a physiological salt thereof, in particular sodium sorbate and / or salicylic acid and / or a physiological salt thereof, especially sodium salicylate.

If the preparation according to the invention contains preservatives, they are present with a total content of 1.0 to 4.0% by weight, preferably 1.5 to 2.0% by weight, based on the total weight of the preparation.

It is also advantageous according to the invention if one or more humectants are additionally incorporated into the preparation according to the invention. Humectants can, for example, give the skin moisture and / or help prevent moisture loss in the skin. The humectants are hygroscopic substances that can bind water. This water-binding capacity is based on hydrophilic groups such as hydroxyl groups, but also amine groups and carboxyl groups. Humectants are for example

Glycerin, Butylene Glycol, Propylene Glycol, Biosaccaride Gum-1, Ethylhexyloxyglycerin, Pyrrolidoncarboxylic Acid, Urea, Sorbitol, Xylitol, Aloe Vera Gel and others more. The use of propylene glycol and / or glycerine is preferred according to the invention.

If the preparation according to the invention additionally contains one or more humectants, the humectant (s) has a total content of 0.01 to 30% by weight, preferably 5 to 20% by weight, based on the total weight of the preparation , in front.

In order to color the preparations according to the invention, at least one dye and / or color pigment can also be included. The dyes and pigments can be selected from the corresponding positive list of the Cosmetics Ordinance or the EC list of cosmetic colorants. In most cases, they are identical to the food-approved colorings. Suitable color pigments are, for example, titanium dioxide, mica, iron oxides (e.g. Fe ₂ O ₃ , Fe ₃ O ₄ , FeO (OH)) and / or tin oxide. Suitable dyes are, for example, carmine, Prussian blue, chromium oxide green, ultramarine blue and / or manganese violet. It is advantageous to choose the dyes and / or color pigments from the Rowe Color Index, 3rd Edition, Society of Dyers and Colourists, Bradford, England, 1971.

It is particularly advantageous to select the at least one dye from water-soluble or polar dyes: CI Boarding school Bez. 11680 Yellow-P / 2299 12490 Red-P / 2241 13015 Yellow-W / 1144 14720 Red-W / 1209 15985 Orange-W / 12541 16035 Red-W / 12100 16255 Red-W / 12132 17200 Red-W / 12052 19140 Yellow-W / 12254 28440 Black-W / 12535 42051 Blue-W / 11518.9 42090 Blue-W / 11509 45170 Red-W / 12255 47005 Yellow-W / 11847 47005 Yellow-W / 12270 61570 Green-W / 11404 14720 Red-W / 13149 42053 Green-W / 13144

Furthermore, it is particularly advantageous to select titanium dioxide (CI 77891) as the color pigment.

If the preparation according to the invention contains dyes and / or colored pigments, the total content of the at least one dye and / or the at least one colored pigment is from the range 0.01 to 0.3% by weight, preferably 0.05 to 0, 2% by weight, based on the total weight of the preparation, to be selected.

The preparation according to the invention can contain cosmetic auxiliaries such as are customarily used in such preparations, eg. B. preservatives, complexing agents, bactericides, perfumes, substances to increase foaming, fillers that improve the feel of the skin, fats, oils, waxes or other common components of a cosmetic or dermatological formulation such as alcohols, foam stabilizers, electrolytes, organic solvents or silicone derivatives.

• - Wasser in einem geeigneten Gefäß vorgelegen, Zugabe des/der Verdicker(s) unter Rühren mit einem Dissolverrührer*, Rühren bis der/die Verdicker aufgequollen ist;
• - Erwärmen im Wasserbad unter Rühren auf etwa 60 bis 80°C, Zugabe des Fettalkohols (Polymerphase);
• - Zugabe des erwärmten Tensids zur Polymerphase (Ansatz) bei etwa 60°C; optional, wenn mehrere Tenside enthalten sind, Zugabe des wenigstens einen amphoteren Tensids, dann Zugabe des wenigstens einen Aminosäuretensids und Zugabe des wenigstens einen weiteren anionischen Tensids;
• - Rühren des Ansatzes für etwa 15 Minuten im Wasserbad bei 60°C; Entnahme aus dem Wasserbad und unter Rühren abkühlen auf etwa 40°C;
• - Während des Abkühlens Zugabe, optional Zugabe von einem oder mehreren Farbstoffen und/oder Parfüm; Einstellen des pH-Wertes mit einer Base und/oder einer organischen Säure (Ansatz II);
• - Abfüllen des noch warmen Ansatzes (Ansatz II) in geeignete Gefäße, insbesondere Tiegel, vollständige Abkühlung im entsprechenden Gefäß.

The preparation according to the invention can be produced by any method customary in the cosmetic industry and suitable for this form of preparation. However, it is advantageous if the preparation is made in the following way:

• - Water in a suitable vessel, addition of the thickener (s) while stirring with a dissolver stirrer *, stirring until the thickener (s) has swollen;
• - Warming in a water bath with stirring to about 60 to 80 ° C, adding the fatty alcohol (polymer phase);
• - Addition of the heated surfactant to the polymer phase (batch) at about 60 ° C; optionally, if several surfactants are included, adding the at least one amphoteric surfactant, then adding the at least one amino acid surfactant and adding the at least one further anionic surfactant;
• - Stirring the batch for about 15 minutes in a water bath at 60 ° C; Remove from the water bath and cool to about 40 ° C while stirring;
• - During cooling, adding, optionally adding one or more colorants and / or perfume; Adjusting the pH with a base and / or an organic acid (batch II);
• - Filling of the still warm batch (batch II) into suitable vessels, in particular crucibles, complete cooling in the corresponding vessel.

• - Wasser in einem geeigneten Gefäß vorgelegen, Zugabe des/der Verdicker(s) unter Rühren mit einem Dissolverrührer(Der Dissolverrührer kann beispielsweise ein Dissolverrührer von der Firma IKA sein. Der Rührer sollte eine Umdrehungszahl von 50 bis 2000 upm haben, vorteilhaft sollte für die Herstellung der erfindungsgemäßen pastösen Zubereitung ein Rührwerk ausgewählt werden, das den Rührer mit 400 bis 1200 upm bewegen kann), Rühren bis der/die Verdicker aufgequollen ist;
• - Erwärmen im Wasserbad unter Rühren auf etwa 60 bis 80°C, Zugabe des Fettalkohols, (Polymerphase).
• - Zugabe des erwärmten Tensids zur Polymerphase (Ansatz) bei etwa 60°C; wenn weitere Tenside in der Zubereitung enthalten sind, ist es vorteilhaft, das amphotere Tensid (beispielsweise Coco-Betaine) zuerst zuzusetzen, dann das wenigstens eine Aminosäuretensid (beispielsweise Natrium Cocoyl Glycinate) und dann das weitere anionische Tensid (beispielsweise Natrium Laurylethersulfate) zuzugeben;
• - Rühren des Ansatzes für etwa 15 Minuten im Wasserbad bei 60°C; Entnahme aus dem Wasserbad und unter Rühren abkühlen auf 40°C;
• - Während des Abkühlens Zugabe, wenn gewünscht, von einem oder mehreren Farbstoffen und dem Parfüm; Einstellen des pH-Wertes mit einer organischen Säure (beispielsweise Zitronensäure) in zwei Schritten, wobei zunächst die Hälfte der Säure zugegeben wird, nach 1 bis 2 Minuten wird dann die zweite Hälfte der Säure zugegeben (Ansatz II).
• - Abfüllen des noch warmen Ansatzes (Ansatz II) in geeignete Gefäße (insbesondere Tiegel), vollständige Abkühlung im geeigneten Gefäß.

It is particularly advantageous if the preparation according to the invention is produced in the following way:

• - Water in a suitable vessel, addition of the thickener (s) with stirring with a dissolver stirrer (The dissolver stirrer can be, for example, a dissolver stirrer from IKA. The stirrer should have a speed of 50 to 2000 rpm, which should be advantageous for the Production of the pasty preparation according to the invention, a stirrer can be selected that can move the stirrer at 400 to 1200 rpm), stirring until the thickener (s) has swollen;
• - Heating in a water bath with stirring to about 60 to 80 ° C, adding the fatty alcohol, (polymer phase).
• - Addition of the heated surfactant to the polymer phase (batch) at about 60 ° C; if further surfactants are included in the preparation, it is advantageous to add the amphoteric surfactant (for example coco-betaine) first, then to add the at least one amino acid surfactant (for example sodium cocoyl glycinate) and then the further anionic surfactant (for example sodium lauryl ether sulfate);
• - Stirring the batch for about 15 minutes in a water bath at 60 ° C; Remove from the water bath and cool to 40 ° C with stirring;
• - During cooling, adding, if desired, one or more colorants and the perfume; Adjustment of the pH with an organic acid (for example citric acid) in two steps, whereby first half of the acid is added, after 1 to 2 minutes the second half of the acid is then added (batch II).
• - Filling of the still warm batch (batch II) into suitable vessels (especially crucibles), complete cooling in a suitable vessel.

In order to demonstrate the effect that both amino acid surfactants and fatty alcohol are important in order to achieve a pasty consistency, the following preparations were produced and examined with regard to pH and consistency.

The investigations show two things: on the one hand, amino acid surfactants, using the example of sodium cocoyl glycinate, have a thickening effect that is so pronounced that pasty preparations can be obtained. Furthermore, the results for amphoteric surfactants, using the example of coco-betaine and other anionic surfactants, in particular alkyl ether sulfates, using the example of sodium lauryl ether sulfate, show that these surfactants have no thickening effect. A further study was even carried out for sodium laureth sulfate, in which the pH value was gradually raised to 5.1; none of these preparations showed a thickening effect.

In addition, a combination of at least one amino acid surfactant (using the example of sodium cocoyl glycinate) and at least one fatty alcohol (using the example of cetyl alcohol) leads to a further thickening of the preparation, which can be read from even higher consistency values.

It was also analyzed whether and what effect the amount of amino acid surfactant (e.g. sodium cocoyl glycinate) or fatty alcohol (e.g. cetyl alcohol) has on the consistency.

In a first experiment, the amount of fatty alcohol was varied and the amounts of all other components kept constant; the amount of water was varied to make up the example formulations to 100%. The preparations were examined for pH and consistency.

In a second experiment, the amount of amino acid surfactant was varied and the amounts of all other components kept constant; the amount of water was varied to make up the example formulations to 100%. The preparations were examined for pH and consistency.

The two studies show that both the amount of amino acid surfactant, using the example of sodium cocoyl glycinate, and also the amount of fatty alcohol have an effect on thickening. The combination of amino acid surfactant (s) and fatty alcohol (s), both in a certain ratio, leads to such a thickening that pasty preparations can be obtained.

From these experiments it can be seen that a weight ratio of amino acid surfactant to fatty alcohol of 12: 1 to 3: 1, advantageously from 10: 1 to 5: 1, leads to satisfactory, namely sufficiently pasty, preparations.

In a further experiment it could be shown that there is an optimum consistency with regard to the amount of amino acid surfactant, namely with an amount of amino acid surfactant (using the example of sodium cocoyl glycinate) of about 5% by weight.

These investigations show that with the combination of amino acid surfactant and fatty alcohol according to the invention such a thickening can be achieved, so that the preparation according to the invention can be made available in pasty form.

In the case of pasty preparations, it is advantageous to determine the consistency instead of the viscosity. The consistency measurements were carried out with a KO-82 consistometer. The measuring device for measuring the consistency is a conventional spring balance dynamometer, which has been optimized so that cosmetic samples can be measured. The dynamometer is a Kontaktor brand dynamometer.

The sample to be measured is filled into a 75 ml aluminum crucible and stored. The measurements are carried out at fixed intervals during storage.

The sample to be measured in the aluminum crucible is placed in the holder.

The dynamometer is attached to the machine using the bracket provided. The indicator for determining the maximum consistency, a red pointer, is set to zero. The sensor initially points upwards.

The machine is started with the green button. The holder with the sample is now fixed accordingly. The measurement begins when the start button (white) is pressed. The dynamometer with the probe, which is immersed in the sample, rotates through 360 ° at a defined speed of 10 rpm. The force is now measured which is necessary for the probe to move once through the sample. The black pointer of the dynamometer shows the measured force in real time and the red pointer shows the maximum force applied during the measurement process.

Depending on the properties of the sample, different dynamometers with different scales are available.

The measured value on the scale corresponds to 1g / cN per unit.

As long as there are no disruptive factors such as air bubbles or strong instabilities, the accuracy of the measuring device is given with a measured value of ± 1 per scale unit. In the case of a dynamometer with a scale from 25 to 250, the scale being displayed in steps of 5, the result is thus given with a reproducibility of ± 5g / cN. Measurements are taken at a temperature of 25 ° C. The sample is stored in the same room, but at least in a room of the same temperature.

The pH value was measured using a commercially available pH meter (for example the laboratory pH meter 766, brand Knick).

In order to be able to make a statement about the mildness of the preparation according to the invention, an example formulation was produced and distributed to 35 users who describe their skin as sensitive. The users used the named product once a day for 14 days. Following this trial period a questionnaire had to be filled out. The users confirmed that the product was very well tolerated according to the example recipe; there was no reddening of the skin during the test period or thereafter, and no skin irritation was observed either.

The present invention also relates to the use of a combination of at least one amino acid surfactant and at least one fatty alcohol for thickening a cosmetic cleaning preparation to a pasty consistency. The use of a combination of at least one amino acid surfactant and at least one fatty alcohol for thickening a cosmetic cleaning preparation to a pasty consistency is particularly advantageous, the at least one amino acid surfactant being an acylglycic acid and / or a physiologically acceptable salt thereof and in an amount of 2 to 20 % By weight, based on the total weight of the preparation, of the at least one unbranched fatty alcohol with a chain length of 12 to 20 carbon atoms in an amount of 0.5 to 5.0% by weight, based on the total weight of the preparation , and that the weight ratio of amino acid surfactant to fatty alcohol is 15: 1 to 2: 1, preferably 12: 1 to 5: 1.

Examples:

The following examples are intended to illustrate the present invention without restricting it. The numerical values in the examples mean percentages by weight, based on the total weight of the respective preparations. The information relates to the respective active content. 1 2 3 4th Acrylates / C10-C30 Alkyl Acrylate Crosspolymer 0.9 0.9 0.9 0.9 Cetyl alcohol 2.0 2.0 4.0 2.0 Ethyl paraben 0.347 0.347 0.347 0.347 Methyl paraben 0.347 0.347 0.347 0.347 Coco-Betaine 4.0 4.0 4.0 4.0 Sodium Cocoyl Glycinate 4.0 6.0 4.0 4.0 Sodium lauryl ether sulfate 3.0 3.0 0 0 Glycerin 14.85 15th 15th 15th PEG 14 M. 0.1 0.1 0.1 0.1 Titanium dioxide 0.8 0.8 0.8 0.8 CI 40817 0.075 0.075 0.075 0.075 CI 16035 0.028 0.028 0.028 0.028 Perfume 0.3 0.3 0.3 0.3 Phenoxyethanol 0.9 0.9 0.2 0.2 Sodium chloride 1.7 2.0 1.7 2.0 water Ad 100 Ad 100 Ad 100 Ad 100

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2682161 A2 [0010]
• EP 2320862 A1 [0011]
• WO 2011/025898 A1 [0011]
• EP 3068368 A2 [0012]
• WO 2015/071298 A2 [0012]
• DE 1223/2009 [0038]

Claims (18)

Preserving cosmetic pasty cleaning preparation - At least one amino acid surfactant, in particular an acylglycic acid and / or a physiologically acceptable salt thereof, in an amount of 2 to 20% by weight, based on the total weight of the preparation, - At least one thickener, in particular an acrylate-based thickener in an amount of 0.1 to 5.0 wt .-%, based on the total weight of the preparation and - At least one unbranched fatty alcohol, with a chain length of 12 to 20 carbon atoms, in an amount of 0.5 to 5.0 wt .-%, based on the total weight of the preparation, the pH of the preparation between 4.0 and 9 , 0 and where the weight ratio of amino acid surfactant to fatty alcohol in the preparation is 15: 1 to 2: 1, preferably 12: 1 to 3: 1, particularly preferably 10: 1 to 5: 1. Preparation after Claim 1 , characterized in that the preparation contains water, preferably with a content of 50 to 80% by weight, particularly preferably 60 to 70% by weight, based on the total weight of the preparation. Preparation after Claim 1 and / or 2, characterized in that the amino acid surfactant is contained in an amount of 3 to 15% by weight, preferably 4 to 10% by weight, based on the total weight of the preparation and based on the active content. Preparation according to at least one of the preceding claims, characterized in that the at least one acrylate-based thickener is a carbomer and / or an acrylates / C10-C30 alkyl acrylate crosspolymer. Preparation according to at least one of the preceding claims, characterized in that at least one thickener with a content of 0.5 to 2.5% by weight, preferably 0.5 to 1.5% by weight, based on the total weight of the preparation , is included. Preparation according to at least one of the preceding claims, characterized in that the at least one fatty alcohol has a chain length of 14 to 18 carbon atoms, in particular that it contains cetyl alcohol and very particularly that it only contains cetyl alcohol. Preparation according to at least one of the preceding claims, characterized in that the at least one fatty alcohol is present with a content of 1.0 to 4.0% by weight, based on the total weight of the preparation. Preparation according to at least one of the preceding claims, characterized in that the pH is between 4.5 and 6.5. Preparation according to at least one of the preceding claims, characterized in that the preparation contains one or more further surfactant (s) selected from the group of anionic surfactants and / or amphoteric surfactants, with the proviso that the anionic surfactants do not contain any Are amino acid surfactants. Preparation according to at least one of the preceding claims, characterized in that the at least one further surfactant is an anionic surfactant, preferably an alkyl ether sulfate, particularly preferably sodium lauryl ether sulfate. Preparation according to at least one of the preceding claims, characterized in that the preparation is soap-free. Preparation according to at least one of the preceding claims, characterized in that the at least one further surfactant is an amphoteric surfactant, preferably an alkyl betaine, particularly preferably coco-betaine. Preparation according to at least one of the preceding claims, characterized in that the at least one further surfactant has a total content of 2.0 to 11.0% by weight, based on the total weight of the preparation and the active content. Preparation according to at least one of the preceding claims, characterized in that it also contains at least one preservative, preferably selected from the group consisting of phenoxyethanol, methyl paraben, ethyl paraben and / or benzyl alcohol. Preparation according to at least one of the preceding claims, characterized in that the at least one preservative has a content of 1.0 to 4.0% by weight, preferably 1.5 to 2.0% by weight, based on the total weight of the Preparation. Process for the production of a pasty cleaning preparation, characterized by the following process steps: water in a suitable vessel, addition of the thickener (s) with stirring with a dissolver stirrer, stirring until the thickener (s) has swollen; - Heating in a water bath with stirring to about 60 to 80 ° C, addition of the fatty alcohol (polymer phase); - Adding the heated surfactant (about 60 ° C) to the polymer phase (batch); optionally, if several surfactants are included, adding the at least one amphoteric surfactant, then adding the at least one amino acid surfactant and adding the at least one further anionic surfactant; - Stirring the batch for about 15 minutes in a water bath at 60 ° C; Remove from the water bath and cool to 40 ° C with stirring; - During cooling, adding, optionally adding one or more colorants and / or perfume; Adjusting the pH with a base and / or an organic acid (batch II); - Filling of the still warm batch (batch II) into suitable vessels, in particular crucibles, complete cooling in the suitable vessel. Use of a combination of at least one amino acid surfactant and at least one fatty alcohol for thickening a cosmetic cleaning preparation to a pasty consistency. Use after Claim 17 characterized in that - the at least one amino acid surfactant is an acylglycic acid and / or a physiologically acceptable salt thereof and is present in an amount of 2 to 20% by weight, based on the total weight of the preparation, - the at least one unbranched fatty alcohol with a chain length of 12 to 20 carbon atoms in an amount of 0.5 to 5.0% by weight, based on the total weight of the preparation, and that the weight ratio of amino acid surfactant to fatty alcohol 15: 1 to 2: 1, preferably 12: 1 to 3: 1, particularly preferably 10: 1 to 5: 1.