# US 12,178,898 B2 · Composition comprising the combination of two particular oxidation dye precursors and a particular oxyethylenated fatty acid ester of sorbitan > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,178,898 B2 - Document ID: US12178898B2 - Status: Granted - Kind: B2 - Application number: 18/255,337 - Filed: 2021-12-16 - Published: 2024-01-25 - Granted: 2024-12-31 - Earliest claimed: 2020-12-17 - Assignees: L'oreal - Applicants: L'oreal - Inventors: Valérie Nicou; Laurence Cottard-Mei - Web page: https://patentgrep.com/patent/US12178898B2 ## CPC - A61K 8/4973: {with oxygen as the only hetero atom} - A61K 8/411: {Aromatic amines, i.e. where the amino group is directly linked to the aromatic nucleus} - A61K 8/415: {Aminophenols} - A61K 8/4993: {Derivatives containing from 2 to 10 oxyalkylene groups} - A61Q 5/10: Preparations for permanently dyeing the hair - A61K 2800/4324: in preparations for permanently dyeing the hair - A61K 2800/882: Mixing prior to application - 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 The invention relates to a composition comprising at least one oxidation coupler chosen from hydroxyethyl-3,4-methylenedioxyaniline of formula (I), one of its addition salts, its solvates and/or the solvates of its salts, at least one oxidation coupler chosen from 2-amino-5-ethylphenol of formula (II), one of its addition salts, its solvates and/or the solvates of its salts, and at least one oxyethylenated C8-C30 fatty acid ester of sorbitan having from 1 to 10 ethylene oxide units. The invention also relates to a process for N dyeing keratin fibres, preferably the hair, comprising the application of the composition to said keratin fibres. ## Claims ### Claim 1 A composition comprising: at least one oxidation coupler chosen from hydroxyethyl-3,4-methylenedioxyaniline of formula (I), addition salts thereof, solvates thereof, solvates of its salts thereof, or mixtures of two or more thereof at least one oxidation coupler chosen from 2-amino-5-ethylphenol of formula (II), addition salts thereof, solvates thereof, solvates of its salts thereof, or mixtures of two or more thereof at least one oxyethylenated C8-C30 fatty acid ester of sorbitan having from 1 to 10 ethylene oxide units. ### Claim 2 (depends on 1) The composition of claim 1, wherein the total amount of oxidation coupler(s) chosen from hydroxyethyl-3,4-methylenedioxyaniline of formula (I), addition salts thereof, solvates thereof, solvates of its salts thereof, or mixtures of two or more ranges from 0.001% to 20% by weight, relative to the total weight of the composition. ### Claim 3 (depends on 1) The composition of claim 1, wherein the total amount of oxidation coupler(s) chosen from 2-amino-5-ethylphenol of formula (II), addition salts thereof, solvates thereof, solvates of its salts thereof, or mixtures of two or more thereof ranges from 0.001% to 20% by weight, relative to the total weight of the composition. ### Claim 4 (depends on 1) The composition of claim 1, further comprising at least one oxidation base. ### Claim 5 (depends on 4) The composition of claim 4, wherein the at least one oxidation base is chosen from para-phenylenediamines, bis (phenyl) alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, addition salts thereof, or mixtures of two or more thereof. ### Claim 6 (depends on 4) The composition of claim 4, wherein the total amount of oxidation base(s) ranges from 0.001% to 20% by weight, relative to the weight of the composition. ### Claim 7 (depends on 4) The composition of claim 4, wherein the weight ratio of the total amount of the oxidation base(s) to the total amount of oxidation coupler(s) chosen from hydroxyethyl-3,4-methylenedioxyaniline(s) of formula (I) addition salts thereof, solvates thereof, solvates of their salts thereof, or mixtures of two or more thereof and oxidation coupler(s) chosen from 2-amino-5-ethylphenol of formula (II), addition salts thereof, solvates thereof, solvates of their salts thereof, or mixtures of two or more thereof ranges from 1:10 to 10:1. ### Claim 8 (depends on 1) The composition of claim 1, wherein the at least one oxyethylenated C8-C30 fatty acid ester of sorbitan having from 1 to 10 ethylene oxide units is chosen from oxyethylenated C12-C18 fatty acid ester(s) of sorbitan having from 1 to 10 ethylene oxide units. ### Claim 9 (depends on 1) The composition of claim 1, wherein the at least one oxyethylenated C8-C30 fatty acid ester of sorbitan having from 1 to 10 ethylene oxide units is chosen from oxyethylenated fatty acid ester(s) of sorbitan having from 2 to 6 ethylene oxide units. ### Claim 10 (depends on 1) The composition of claim 1, wherein the at least one oxyethylenated C8-C30 fatty acid ester of sorbitan having from 1 to 10 ethylene oxide units is chosen from oxyethylenated sorbitan monolaurate comprising 4 OE, oxyethylenated sorbitan monostearate comprising 4 OE, or oxyethylenated sorbitan monooleate comprising 5 OE. ### Claim 11 (depends on 1) The composition of claim 1, wherein the total amount of oxyethylenated C8-C30 fatty acid ester(s) of sorbitan having from 1 to 10 ethylene oxide units ranges from 0.05% to 20% by weight, relative to the total weight of the composition. ### Claim 12 (depends on 1) The composition of claim 1, further comprising at least one fatty substance. ### Claim 13 (depends on 12) The composition of claim 12, wherein the at least one fatty substance is chosen from liquid hydrocarbons comprising more than 16 carbon atoms, plant oils, liquid fatty alcohols, liquid fatty esters, silicone oils, or mixtures of two or more thereof. ### Claim 14 (depends on 12) The composition of claim 12, wherein the at least one fatty substance is chosen from solid fatty acids, solid fatty alcohols, solid esters of fatty acids and/or of fatty alcohols, waxes, ceramides, or mixtures of two or more thereof. ### Claim 15 (depends on 1) The composition of claim 1, further comprising at least one surfactant different from the at least one oxyethylenated C8-C30 fatty acid ester of sorbitan having from 1 to 10 ethylene oxide units and chosen from anionic surfactants, non-ionic surfactants, or mixtures thereof. ### Claim 16 (depends on 1) The composition of claim 1, further comprising at least one sequestrant. ### Claim 17 (depends on 1) The composition of claim 1, further comprising at least one alkaline agent. ### Claim 18 (depends on 1) The composition of claim 1, further comprising at least one chemical oxidizing agent. ### Claim 19 A method for dyeing keratin fibers, comprising mixing a dyeing composition (A) with an oxidizing composition (B), wherein the dyeing composition (A) comprises: at least one oxidation coupler chosen from hydroxyethyl-3,4-methylenedioxyaniline of formula (I), addition salts thereof, solvates thereof, solvates of its salts thereof, or mixtures of two or more thereof: at least one oxidation coupler chosen from 2-amino-5-ethylphenol of formula (II), addition salts thereof, solvates thereof, solvates of its salts thereof, or mixtures of two or more thereof: at least one oxyethylenated C8-C30 fatty acid ester of sorbitan having from 1 to 10 ethylene oxide units, and wherein the oxidizing composition (B) comprises at least one chemical oxidizing agent, and applying the mixture to keratin fibers. ### Claim 20 A kit comprising a first compartment and a second compartment, wherein the first compartment comprises a dyeing composition (A) comprising at least one oxidation coupler chosen from hydroxyethyl-3,4-methylenedioxyaniline of formula (I), addition salts thereof, solvates thereof, solvates of its salts thereof, or mixtures of two or more thereof: at least one oxidation coupler chosen from 2-amino-5-ethylphenol of formula (II), addition salts thereof, solvates thereof, solvates of its salts thereof, or mixtures of two or more thereof: at least one oxyethylenated C8-C30 fatty acid ester of sorbitan, and at least one oxyethylenated C8-C30 fatty acid ester of sorbitan having from 1 to 10 ethylene oxide units, and wherein the second compartment comprises an oxidizing composition (B) comprising at least one chemical oxidizing agent.