# US 10,869,816 B2 · Powder additive to reduce the damage of bleaching and colouring agents > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,869,816 B2 - Document ID: US10869816B2 - Status: Granted - Kind: B2 - Application number: 16/397,988 - Filed: 2019-04-29 - Published: 2020-10-29 - Granted: 2020-12-22 - Earliest claimed: 2019-04-29 - Assignees: Henkel IP & Holding GmbH; Henkel AG & Co. KGaA - Applicants: Henkel IP & Holding GmbH; Henkel AG & Co. KGaA - Inventors: Hartmut Manneck; Thomas Hippe; Marc Stucky; Stephanie Smith; Robert Schaeffler - Web page: https://patentgrep.com/patent/US10869816B2 ## CPC - A61K 8/022: {Powders; Compacted Powders} - A61K 8/0225: {Granulated powders} - A61K 8/25: Silicon; Compounds thereof - A61K 8/36: Carboxylic acids; Salts or anhydrides thereof - A61K 8/362: Polycarboxylic acids - A61K 8/365: Hydroxycarboxylic acids; Ketocarboxylic acids - A61K 8/44: Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof - A61K 8/58: containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus - A61K 8/64: Proteins; Peptides; Derivatives or degradation products thereof - A61K 8/65: Collagen; Gelatin; Keratin; Derivatives or degradation products thereof - A61K 8/92: Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof - A61K 8/922: {of vegetable origin} - A61Q 5/065: {Preparations for temporary colouring the hair, e.g. direct dyes} - A61Q 5/08: Preparations for bleaching the hair - A61Q 5/10: Preparations for permanently dyeing the hair - A61K 2800/31: Anhydrous - A61K 2800/412: Microsized, i.e. having sizes between 0.1 and 100 microns - A61K 2800/524: Preservatives - A61K 2800/5922: At least two compounds being classified in the same subclass of A61K8/18 - A61K 2800/805: Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95 - 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) - A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS ## Abstract A powder additive for a keratin fiber coloring or bleaching agent or developer is provided. The powder additive includes a dicarboxylic acid containing from about 2 to about 10 carbon atoms, selected from the group of malic acid, D-tartaric acid, L-tartaric acid, meso-tartaric acid, racemic acid, alpha-ketoglutaric acid, beta-ketoglutaric acid, oxaloacetic acid, maleic acid, fumaric acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, azelaic acid, sorbic acid, a salt of these dicarboxylic acids, and mixtures thereof. The powder additive also includes an amino acid or a salt of an amino acid and an alkalisilicate. The powder additive has no greater than about 10% by weight water, based on the weight of the powder additive. In addition, the powder additive includes particles and at least about 80% of the particles have an average particle size of less than 200 μm. ## Claims ### Claim 1 A powder additive for a keratin fiber coloring or bleaching agent or developer, the powder additive comprising: 20 wt. % to about 80 wt. %, based on the total weight of the powder additive, of a dicarboxylic acid containing from about 2 to about 10 carbon atoms, selected from the group consisting of malic acid, D-tartaric acid, L-tartaric acid, meso-tartaric acid, racemic acid, alpha-ketoglutaric acid, beta-ketoglutaric acid, oxaloacetic acid, maleic acid, fumaric acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, azelaic acid, sorbic acid, a salt of these dicarboxylic acids, and mixtures thereof; an amino acid or a salt of an amino acid; and an alkalisilicate; wherein the powder additive has no greater than about 10% by weight water, based on the weight of the powder additive; and wherein the powder additive comprises particles and wherein at least about 80% of the particles have an average particle size of less than 200 μm. ### Claim 2 (depends on 1) The powder additive of claim 1, wherein the powder additive has no greater than about 6% by weight water, based on the weight of the powder additive. ### Claim 3 (depends on 1) The powder additive of claim 1, wherein the amino acid or the salt of an amino acid is selected from the group consisting of lysine and arginine. ### Claim 4 (depends on 1) The powder additive of claim 1, wherein the amino acid or the salt of an amino acid is present in an amount of about 0.01 wt. % to about 10 wt. %, based on the total weight of the powder additive. ### Claim 5 (depends on 1) The powder additive of claim 1, wherein the alkalisilicate is present in an amount of about 0.01 wt. % to about 60 wt. %, based on the total weight of the powder additive. ### Claim 6 (depends on 1) The powder additive of claim 1, further comprising silica, fumed silica, or both. ### Claim 7 (depends on 6) The powder additive of claim 6, wherein the silica, fumed silica or both are present in an amount of about 0.001 wt % to about 5 wt. %, based on the total weight of the powder additive. ### Claim 8 (depends on 1) The powder additive of claim 1, further comprising a protein hydrolysate. ### Claim 9 (depends on 8) The powder additive of claim 8, wherein the protein hydrolysate is present in an amount of about 0.2 wt % to about 2 wt %, based on the total weight of the powder additive. ### Claim 10 (depends on 1) The powder additive of claim 1, further comprising a polyvalent metal salt of an organic acid. ### Claim 11 (depends on 1) The powder additive of claim 1, further comprising a saturated, non-volatile oil. ### Claim 12 (depends on 1) The powder additive of claim 1, wherein the powder additive comprises 0 wt. % preservatives. ### Claim 13 A powder additive for a keratin fiber coloring or bleaching agent or developer, the powder additive comprising: 20 wt. % to about 80 wt. %, based on the total weight of the powder additive, of a dicarboxylic acid containing from about 2 to about 10 carbon atoms, selected from the group consisting of malic acid, D-tartaric acid, L-tartaric acid, meso-tartaric acid, racemic acid, alpha-ketoglutaric acid, beta-ketoglutaric acid, oxaloacetic acid, maleic acid, fumaric acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, azelaic acid, sorbic acid, a salt of these dicarboxylic acids, and mixtures thereof; an amino acid or a salt of an amino acid; an alkalisilicate; a protein hydrolysate; and a polyvalent metal salt; wherein the powder additive has no greater than about 10% by weight water, based on the weight of the powder additive; and wherein the powder additive comprises particles and wherein at least about 80% of the particles have an average particle size of less than 200 μm.