Oxidation dye composition for keratinous fibres comprising a paraminophenol, a meta-aminophenol and a meta-phenylenediamine, and dyeing process using such a composition
US5500021A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1994 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Jul 13, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Oxidation dye composition for keratinous fibers comprising a para-aminophenol, a meta-aminophenol and a meta-phenylenediamine and dyeing process using such a composition. The invention relates to a dyeing composition for keratinous fibers and in particular for human keratinous fibers such as hair, comprising, in a suitable medium for dyeing, 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, as additional coupling agent, at least one meta-phenylenediamine or one of its addition salts with an acid. The invention also relates to a dyeing process implementing development by an oxidizing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.