Double para-phenylenediamines joined by an aromatic group for dyeing keratin fibers
US7422609B2 · kind B2 · utility
2Cited by
28References
24Claims
0Family size
Inventors
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Dec 13, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/4973
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure relates to a family of double para-phenylenediamines joined by a linkage comprising an aromatic group and a process for the dyeing of keratin fibers. These double para-phenylenediamines of formula (I) can be used as oxidation base for the dyeing of keratin fibers. Also disclosed are methods of dyeing, methods of making, and dyeing “kits.”
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.