Dyeing composition for keratinous fibres comprising a particular dicationic diazo dye
US7001436B2 · kind B2 · utility
28Cited by
13References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2002 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Jun 10, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D233/88
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a dyeing composition for keratinous fibres, in particular human keratinous fibres and more particularly hair, comprising a dicationic diazo dye of formula (I), as well as the dyeing composition using same. The invention also concerns the novel compounds of formula (I).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.