Patent EP0331144A2 successfully refreshed from Google Patents.
EP0331144A2
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3-Substituted para-amino phenols, process for their preparation, their use in dyeing keratenic fibres and intermediates used in the preparation process
Assignee: L'Oréal SA
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Filing: 1989-03-01
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Granted: —
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Expires: 2009-03-01
Abstract
Abstract 3-Substituted para-aminophenols of general formula: <IMAGE> (I) where X=H, halogen; Y=O-, -S-; R=alkyl, hydroxyalkyl, C1-4 aminoalkyl or C3-C6 polyhydroxyalkyl; with the proviso that, when X=H, R is not methyl, and when X=H and Y=O, R is not ethyl; process for preparing them, intermediate compounds of formula: <IMAGE> (II) where X1=halogen, Y and R have the meaning stated above; with the proviso that, when Y=O, R is not methyl, and when R=aminoalkyl, X1 can also denote hydrogen; dyeing compositions containing one or more compounds of formula (I), and a process For dyeing human hair.
Inventors
- 👤 Alex Junino
- 👤 Alain Genet
- 👤 Gérard Lang
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 23:41
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/415; A61Q; A61Q5/00; A61Q5/10; C; C07; C07C; C07C205/00; C07C205/27; C07C205/35; C07C205/36; C07C205/37; C07C217/00; C07C217/78; C07C217/80; C07C217/82; C07C217/84; C07C323/00; C07C323/23; C07C323/31; C07C323/33; C07C323/35; C07C323/36
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