7-Nitro-2,1,3-benzoxadiazole derivatives and 7-nitro,2,1,3-benzthiadiazole derivatives and dyes, which contain these compounds and which are used for dying keratin fibers
US6726730B2 · kind B2 · utility
0Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Nov 12, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D271/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The new 7-nitro-2,1,3-benzoxadiazole compounds and 7-nitro-2,1,3-benzthiadiazole compounds of formula (I) are: Dyeing agents for keratin fibers containing these compounds and methods of dyeing hair with the dyeing agents are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.