# US 10,945,930 B2 · Thickener in a percarbonate-containing bleaching agent contained in a multi-layer sachet > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,945,930 B2 - Document ID: US10945930B2 - Status: Granted - Kind: B2 - Application number: 16/697,598 - Filed: 2019-11-27 - Published: 2020-07-02 - Granted: 2021-03-16 - Earliest claimed: 2018-12-28 - Assignees: Henkel AG & Co. KGaA - Applicants: Henkel AG & Co. KGaA - Inventors: Udo Erkens; Torsten Lechner - Web page: https://patentgrep.com/patent/US10945930B2 ## CPC - A61K 8/22: Peroxides; Oxygen; Ozone - A45D 19/0066: {Coloring or bleaching} - A45D 37/00: Sachet pads specially adapted for liquid toiletry or cosmetic substances - A61K 8/0216: {Solid or semisolid forms} - A61K 8/23: Sulfur; Selenium; Tellurium; Compounds thereof - A61K 8/26: Aluminium; Compounds thereof - A61K 8/73: Polysaccharides - A61K 8/731: {Cellulose; Quaternized cellulose derivatives} - A61K 8/8111: {Homopolymers or copolymers of aliphatic olefines, e.g. polyethylene, polyisobutene; Compositions of derivatives of such polymers} - A61K 8/85: Polyesters - A61Q 5/08: Preparations for bleaching the hair - A61K 2800/48: Thickener, Thickening system - A61K 2800/87: Application Devices; Containers; Packaging - A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D) - A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING - A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS ## Abstract The present disclosure relates to a cosmetic agent for bleaching human hair, comprising (i) a package comprising at least one multi-layer film, which comprises at least one metal-containing layer as a barrier layer, and (ii) a bleaching agent composition, which is contained in the package, wherein the bleaching agent composition contains at least one percarbonate, at least one inorganic salt of a peroxysulfuric acid, and at least one thickener. The present disclosure also relates to a method for bleaching human hair. ## Claims ### Claim 1 A cosmetic product for bleaching keratin fibres, comprising: (i) a package comprising at least one multi-layer film, which comprises at least one metal-containing layer as a barrier layer; and (ii) a bleaching agent composition, which is contained in the package; wherein the bleaching agent composition comprises at least one percarbonate, at least one inorganic salt of a peroxysulfuric acid, and at least one thickener. ### Claim 2 (depends on 1) The cosmetic product according to claim 1, wherein the at least one inorganic salt of a peroxysulfuric acid is selected from the group of sodium peroxydisulfate, potassium peroxydisulfate, ammonium peroxydisulfate, sodium peroxymonosulfate, potassium peroxymonosulfate and ammonium peroxymonosulfate, and mixtures of these inorganic salts of a peroxysulfuric acid, and wherein the total quantity of inorganic salt of a peroxy sulfuric acid is from about 10 to about 70 wt %, in relation to a total weight of the bleaching agent composition. ### Claim 3 (depends on 1) The cosmetic product according to claim 1, wherein the inorganic salt of a peroxy sulfuric acid is a mixture comprising from about 5 to about 40 wt % potassium peroxydisulfate, from about 5 to about 20 wt % ammonium peroxydisulfate, and from about 0 to about 10 wt % sodium peroxydisulfate, in each case in relation to a total weight of the bleaching agent composition. ### Claim 4 (depends on 1) The cosmetic product according to claim 1, wherein the at least one percarbonate is an alkaline, alkaline earth metal or ammonium salt of a percarbonate, and wherein the bleaching agent composition comprises the at least one percarbonate in a total quantity of from about 2 to about 14 wt % in relation to a total weight of the bleaching agent composition. ### Claim 5 (depends on 1) The cosmetic product according to claim 1, wherein the at least one thickener comprises a polysaccharide, wherein the bleaching agent composition comprises the at least one thickener in a total quantity of from about 0.5 to about 15 wt %, in relation to a total weight of the bleaching agent composition. ### Claim 6 (depends on 1) The cosmetic product according to claim 1, wherein the at least one thickener is a mixture of a cellulose gum, a hydroxyethyl cellulose and a xanthan gum, wherein the quantity of cellulose gum is from about 0.2 to about 5 wt %, the quantity of xanthan gum is from 0.1 to 5 wt %, and the quantity of hydroxyethyl cellulose is from 0.2 to 5 wt %, in each case in relation to a total weight of bleaching agent composition. ### Claim 7 (depends on 1) The cosmetic product according to claim 1, wherein the multi-layer film comprises at least one first polymer layer (P1), at least one second polymer layer (P2) and the barrier layer (BS), wherein the first polymer layer (P1) is formed from polyethylene terephthalate or polyethylene naphthalate; the second polymer layer (P2) is formed from a polyolefin; and the barrier layer (BS) comprises aluminium; wherein the first polymer layer (P1) has a layer thickness of from about 5 to about 20 μm, the second polymer layer has a layer thickness of from about 50 to about 100 μm, and the barrier layer has a layer thickness of from 3 to 30 μm. ### Claim 8 (depends on 7) The cosmetic product according to claim 7, wherein the barrier layer (BS) is arranged between the first polymer layer (P1) and the second polymer layer (P2), and wherein the first polymer layer is situated on the side facing away from the bleaching agent composition. ### Claim 9 (depends on 1) The cosmetic product according to claim 1, wherein the package is a one-chamber sachet in which the percarbonate and the inorganic salt of a peroxysulfuric acid are present; wherein the multi-layer film (F) has an oxygen transmission rate (OTR) of less than about 0.1 cc/m2/d/bar at 23° C. and 0% relative humidity, and a water vapour permeability of less than about 0.1 g/m2d at 38° C. and 90% relative humidity. ### Claim 10 (depends on 1) A method for bleaching human hair, the method comprising the steps of: (a) introducing the bleaching agent composition according to claim 1 into an amount of water, (b) homogenizing the obtained mixture from (a), and (c) applying the homogenised mixture from (b) to the human hair. ### Claim 11 (depends on 1) The cosmetic product according to claim 1, wherein: the package is a two-chamber bag and the percarbonate is contained in a first chamber of the two-chamber bag and the inorganic salt of a peroxysulfuric acid is contained in a second chamber of the two-chamber bag; and wherein the multi-layer film (F) has an oxygen transmission rate (OTR) of less than about 0.1 cc/m2/d/bar at 23° C. and 0% relative humidity, and a water vapour permeability of less than about 0.1 g/m2d at 38° C. and 90% relative humidity. ### Claim 12 (depends on 1) The cosmetic product according to claim 1 wherein: the at least one inorganic salt of a peroxysulfuric acid is selected from the group of mixtures of potassium peroxydisulfate and ammonium peroxydisulfate, and mixtures of sodium peroxydisulfate and ammonium peroxydisulfate; and wherein the total quantity of inorganic salt of a peroxysulfuric acid is from about 10 to about 70 wt %, in relation to a total weight of the bleaching agent composition. ### Claim 13 (depends on 7) The cosmetic product according to claim 7, wherein: the first polymer layer (P1) has the layer thickness of from about 8 to about 16 μm, the second polymer layer (P2) has the layer thickness of from about 60 to about 90 μm, and the barrier layer (BS) has the layer thickness of from about 5 to about 15 μm. ### Claim 14 (depends on 7) The cosmetic product according to claim 7, wherein: the first polymer layer (P1) has the layer thickness of from about 10 to about 14 μm, the second polymer layer (P2) has the layer thickness of from about 70 to about 80 μm, and the barrier layer (BS) has the layer thickness of from about 8 to about 12 μm. ### Claim 15 (depends on 1) The cosmetic product according to claim 1, wherein: wherein the at least one thickener comprises a mixture of an at least partially ionic polysaccharide and a non-ionic polysaccharide, wherein the bleaching agent composition comprises the at least one thickener in a total quantity of from about 0.5 to about 15 wt %, in relation to a total weight of the bleaching agent composition. ### Claim 16 (depends on 15) The cosmetic product according to claim 15, wherein: the bleaching agent composition comprise the at least one thickener in a total quantity of from about 4 to about 8 wt %, in relation to the total weight of the bleaching agent composition. ### Claim 17 (depends on 7) The cosmetic product according to claim 7, wherein: the first polymer layer (P1) comprises polyethylene terephthalate, and the second polymer layer (P2) comprises polyethylene. ### Claim 18 (depends on 1) The cosmetic product according to claim 1, wherein; the at least one percarbonate is sodium percarbonate, and wherein the bleaching agent composition comprises the sodium percarbonate in a total quantity of from about 6 to about 12 wt %, in relation to a total weight of the bleaching agent composition. ### Claim 19 A cosmetic product comprising: (i) a package comprising at least one multi-layer film, wherein the multi-layer film comprises a first polymer layer (P1), a second polymer layer (P2) and a barrier layer (BS), wherein the first polymer layer (P1) comprises polyethylene terephthalate and has a layer thickness of from about 10 to about 14 μm, the second polymer layer (P2) comprises polyethylene and has a layer thickness of from about 70 to about 80 μm, and the barrier layer (BS) comprises aluminium and has a layer thickness of from about 8 to about 12 μm; and (ii) a bleaching agent composition, which is contained in the package; wherein the bleaching agent composition comprises a percarbonate that is sodium percarbonate, wherein the sodium percarbonate is present in the bleaching agent composition at from about 6 to about 12 wt %, an inorganic salt of a peroxysulfuric acid, wherein the at least one inorganic salt of a peroxysulfuric acid is selected from the group of mixtures of potassium peroxydisulfate and ammonium peroxydisulfate, and mixtures of sodium peroxydisulfate and ammonium peroxydisulfate, and the at least one inorganic salt of a peroxysulfuric acid is present in the bleaching agent composition at from about 10 to about 70 wt %; and a thickener, wherein the at least one thickener comprises a mixture of a cellulose gum, a hydroxyethyl cellulose and a xanthan gum, wherein the quantity of cellulose gum is from about 0.2 to about 5 wt %, the quantity of xanthan gum is from 0.1 to 5 wt %, and the quantity of hydroxyethyl cellulose is from 0.2 to 5 wt %, wherein all wt % values are in relation to a total weight of the bleaching agent composition.