Composition for the oxidation dyeing of keratinous fibres comprising a para-aminophenol, a meta-aminophenol and an ortho-aminophenol, and dyeing process using such a composition
US5580357A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1995 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Apr 6, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/415
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dyeing composition for keratinous fibers and in particular for human keratinous fibers such as hair, comprising, in a suitable dyeing medium, at least one oxidation dye precursor chosen from 3-methyl-para-aminophenol, 2-methyl-para-aminophenol and 2-hydroxymethyl-para-aminophenol and their addition salts with an acid; at least one coupling agent chosen from the 2-methyl-5-aminophenols of formula (I): ##STR1## where R denotes hydrogen, methyl, ethyl, .beta.-hydroxyethyl or .gamma.-hydroxypropyl, and their addition salts with an acid; and at least one ortho-aminophenol chosen from ortho-aminophenol and 3-acetylamino-6-aminophenol or one of their addition salts with an acid. A dyeing process incorporates development by an oxidizing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.