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Trialkoxy-substituted m-phenylene diamines, process for their preparation, and their use as coupling agents in the oxidation dyeing of keratinic fibres, especially human hair

Assignee: L'Oréal SA
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Filing: 1989-11-20
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Granted: —
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Expires: 2009-11-20
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Abstract

Abstract Translated from French 1,3,5-trialcoxy métaphénylènediamine de formule : <IMAGE> dans laquelle : R1 et R2 représentent indépendamment l'un de l'autre un atome d'hydrogène, un radical alkyle ayant 1 à 4 atomes de carbone ou un radical mono- ou polyhydroxyalkyle ayant 2 ou 3 atomes de carbone; Z représente un radical alkyle ayant 1 à 4 atomes de carbone, sous réserve que lorsque R1 et R2 désignent simultanément un atome d'hydrogène, Z ne désigne pas le radical méthyle, et les sels d'addition avec un acide de ce composé. Procédé de préparation de ces composés et leur utilisation comme coupleur dans des compositions tinctoriales d'oxydation pour cheveux. 1,3,5-trialkoxy metaphenylenediamine of formula: <IMAGE> in which: R1 and R2 independently of one another represent a hydrogen atom, an alkyl radical having 1 to 4 carbon atoms or a mono- radical or polyhydroxyalkyl having 2 or 3 carbon atoms; Z represents an alkyl radical having 1 to 4 carbon atoms, provided that when R1 and R2 simultaneously denote a hydrogen atom, Z does not denote the methyl radical, and the acid addition salts of this compound. Process for the preparation of these compounds and their use as coupler in dyeing compositions for hair oxidation.

Inventors

  • 👤 Alex Junino
  • 👤 Jean-Jacques Vandenbossche
  • 👤 Hervé Borowiak
  • 👤 Gérard Lang

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-06 17:43
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/411; A61Q; A61Q5/00; A61Q5/10; C; C07; C07C; C07C217/00; C07C217/78; C07C217/80; C07C217/82; C07C217/84

Claims Analysis

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References Cited (Backward Citations)

FR2542193A1 Cited

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