Process for the oxidative dyeing of keratinous fibres with a composition which contains an oxidation dye precursor, a coupler, and an oxidant at an acidic pH
US5741337A · kind A · utility
9Cited by
12References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | May 6, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/411
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition for the oxidation dyeing of keratinous fibres, especially human hair, which comprises an oxidation dye precursor in combination with a coupler and an oxidizing agent, in an acidic medium. The composition is applied to keratinous fibers in a hair dyeing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.