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EP1166749B1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Composition and process for dyeing keratinic fibres

Assignee: Procter and Gamble Deutschland GmbH
•
Filing: 2001-03-15
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Granted: 2005-10-12
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Expires: 2021-03-15
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Abstract

Abstract A colorant for keratin fibers, based on a developer substance-coupler substance combination contains: (i) a coupler substance 2,4-diamino-1-(2-methoxy-ethoxy)benzene (I) or a physiologically compatible salt; and (ii) a developer substance comprising compound(s) selected from ring mono-substituted p-phenylene diamines , 4,5-diamino-1H-pyrazoles and mono-substituted 4-aminophenols or their physiologically compatible salts. A colorant for keratin fibers, based on a developer substance-coupler substance combination contains: (i) a coupler substance 2,4-diamino-1-(2-methoxy-ethoxy)benzene (I) or a physiologically compatible salt; and (ii) a developer substance comprising compound(s) selected from ring mono-substituted p-phenylene diamines (II), 4,5-diamino-1H-pyrazoles (III) and mono-substituted 4-aminophenols (IV) of given formulae or their physiologically compatible salts: R2, R4, R5 = H, linear or branched 1-6 C alkyl, monohydroxy-(1-6 C)-alkyl or polyhydroxy-(2-6 C)-alkyl or optionally ring-substituted benzyl; R3 = H or R'; R' = linear or branched 1-6 C alkyl, monohydroxy-(1-6 C)-alkyl, polyhydroxy-(2-6 C)-alkyl, mono-(1-6 C)-alkoxy-(1-6 C)-alkyl or poly-(1-6 C)-alkoxy-(2-6 C)-alkyl or an optionally substituted carbocyclic or heterocyclic aromatic compound; R<6> = R' or linear or branched amino-(1-6 C)-alkyl; m = 0; and R1 = R6; or m = 1; and R1 = linear or branched 3-6 C alkyl, monohydroxy-(2-6 C)-alkyl, polyhydroxy-(3-6 C)-alkyl, mono-(1-6 C)-alkoxy-(2-6 C)-alkyl or poly-(1-6 C)-alkoxy-(3-6 C)-alkyl, linear or branched amino-(2-6 C)-alkyl or an optionally substituted carbocyclic or heterocyclic aromatic compound; R6 not = methyl if in the 2-position. An Independent claim is also included for a method for oxidative coloring of hair by mixing the colorant with an oxidant, applying to the hair and leaving for 10-45 minutes at 15-50 degrees C, then rinsing the hair with water, optionally washing with shampoo and drying.

Inventors

  • 👤 Hans-Jürgen Dr. Braun
  • 👤 Gisela Dr. Umbricht

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 18:20
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/40; A61K8/41; A61K8/415; A61Q; A61Q5/00; A61Q5/10

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 485 words
Agent for colouring keratinic fibres based on a developer substance-coupler substance combination, characterized in that it comprises the coupler substance 2,4-diamino-1-(2-methoxyethoxy)benzene or its physiologically acceptable salt and at least one developer substance selected from the group consisting of (a) p-phenylenediamine derivatives monosubstituted on the benzene ring and of the general formula (I) or their physiologically acceptable salts, in which, when m is 0, R 1 is a straight-chain or branched monohydroxy(C 1 -C 6 )alkyl radical, a straight-chain or branched polyhydroxy-(C 2 -C 6 )alkyl radical, a straight-chain or branched mono (C 1 -C 6 )alkoxy(C 1 -C 6 )alkyl radical, a straight-chain or branched poly-(C 1 -C 6 )alkoxy(C 2 -C 6 )alkyl radical, a straight-chain or branched amino(C 1 -C 6 )alkyl radical or a carbocyclic or heterocyclic, substituted or unsubstituted, aromatic compound; and when m is 1 R 1 is a straight-chain or branched C 3 -C 6 alkyl radical, a straight-chain or branched monohydroxy(C 2 -C 6 )alkyl radical, a straight-chain or branched polyhydroxy-(C 3 -C 6 )alkyl radical, a straight-chain or branched mono (C 1 -C 6 )alkoxy(C 2 -C 6 )alkyl radical, a straight-chain or branched poly-(C 1 -C 6 )alkoxy(C 3 -C 6 )alkyl radical, a straight-chain or branched amino(C 2 -C 6 )alkyl radical or a carbocyclic or heterocyclic, substituted or unsubstituted, aromatic compound; (b) 4,5-diamino-1H-pyrazole derivatives of the general formula (II) or their physiologically acceptable salts, in which R 2 , R 4 and R 5 , independently of one another, are a hydrogen atom, a straight-chain or branched C 1 -C 6 -alkyl radical, a straight-chain or branched monohydroxy-(C 1 -C 6 )alkyl radical, a straight-chain or branched polyhydroxy(C 2 -C 6 )alkyl radical, or a benzyl radical which is unsubstituted or substituted on the aromatic, and R 3 is a hydrogen atom, a straight-chain or branched C 1 -C 6 alkyl radical, a straight-chain or branched monohydroxy(C 1 -C 6 )alkyl radical, a straight-chain or branched polyhydroxy(C 2 -C 6 )alkyl radical, a straight-chain or branched mono(C 1 -C 6 )alkoxy(C 1 -C 6 )alkyl radical, a straight-chain or branched poly-(C 1 -C 6 )alkoxy(C 2 -C 6 )alkyl radical, or a carbocyclic or heterocyclic, substituted or unsubstituted, aromatic compound; and (c) 4-aminophenol derivatives of the general formula (III) or their physiologically acceptable salts, in which R 6 is a straight-chain or branched C 1 -C 6 alkyl radical, a straight-chain or branched monohydroxy(C 1 -C 6 )alkyl radical, a straight-chain or branched polyhydroxy-(C 2 -C 6 )alkyl radical, a straight-chain or branched mono(C 1 -C 6 )alkoxy(C 1 -C 6 )alkyl radical, a straight-chain or branched poly-(C 1 -C 6 )alkoxy(C 2 -C 6 )alkyl radical, a straight-chain or branched amino(C 1 -C 6 )alkyl radical, or a carbocyclic or heterocyclic, substituted or unsubstituted, aromatic compound, under the condition that the radical R 6 is not methyl when it is in the 2-position.
Claim 2
Dependent Claim 31 words
Agent according to Claim 1, characterized in that the p-phenylenediamine derivative of the formula (I) is chosen from 2-(hydroxymethyl)-p-phenylenediamine, 2-(1-hydroxyethyl)-p-phenylenediamine, 2-(2-hydroxyethyl)-p-phenylenediamine, 2-(3-hydroxypropyl)-p-phenylenediamine, 2-(1,2-dihydroxyethyl)-p-phenylenediamine, 2-(methoxymethyl)-p-phenylenediamine, 2-(2-methoxyethyl)-p-phenylenediamine, 2-(2-hydroxyethoxy)-p-phenylenediamine, 2,5-diamino-1,1'-biphenyl, 2-(2-thienyl)-p-phenylenediamine, 2-(3-thienyl)-p-phenylenediamine and 3-(2,5-diaminophenyl)pyridine.
Claim 3
Dependent Claim 27 words
Agent according to Claim 1, characterized in that the pyrazole derivative of the formula (II) is chosen from 4,5-diamino-1-methyl-1H-pyrazole, 4,5-diamino-1-(2-hydroxyethyl)-1H-pyrazole, 4,5-diamino-1-(1-methylethyl)-1H-pyrazole, 4,5-diamino-1-(phenylmethyl)-1H-pyrazole, 4,5-diamino-1-((4-methylphenyl)methyl)-1H-pyrazole, 4,5-diamino-1-(2-hydroxyethyl)-3-methyl-1H-pyrazole, 4,5-diamino-1-methyl-3-phenyl-1H-pyrazole and 4,5-diamino-1,3-dimethyl-1H-pyrazole.
Claim 4
Dependent Claim 28 words
Agent according to Claim 1, characterized in that the p-aminophenol derivative of the formula (III) is chosen from 3-methyl-4-aminophenol, 2-aminomethyl-4-aminophenol, 2-hydroxymethyl-4-aminophenol, 3-hydroxymethyl-4-aminophenol, 2-phenyl-4-aminophenol, 2-(2-thienyl)-4-aminophenol, 2-(3-thienyl)-4-aminophenol, 3-(2-thienyl)-4-aminophenol and 3-(3-thienyl)-4-aminophenol.
Claim 5
Dependent Claim 40 words
Agent according to one of Claims 1 to 4, characterized in that it comprises the 2,4-diamino-1-(2-methoxyethoxy)benzene and the compounds of the formula (I) to (III) in each case in an amount of from 0.01 to 5 per cent by weight.
Claim 6
Dependent Claim 24 words
Agent according to one of Claims 1 to 5, characterized in that it additionally comprises further developer substances and/or coupler substances and/or direct dyes.
Claim 7
Dependent Claim 21 words
Agent according to one of Claims 1 to 6, characterized in that it has a pH of from 6.5 to 11.5.
Claim 8
Dependent Claim 17 words
Agent according to one of Claims 1 to 7, characterized in that it is a hair colorant.
Claim 9
Dependent Claim 64 words
Method for the oxidative colouring of hair, characterized in that , prior to application, a hair colorant according to one of Claims 1 to 8 is mixed with an oxidizing agent, then applied to the hair, left to act at a temperature of from 15 to 50°C for 10 to 45 minutes, the hair is then rinsed with water, optionally shampooed and then dried.

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