Cationic oxidation bases, their use for the oxidation dyeing of keratin fibres, dyeing compositions and dyeing methods
US6783557B1 · kind B1 · utility
8Cited by
6References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2001 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Oct 22, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention concerns novel pyrazolo[1,5-a]pyrimidines comprising at least a cationic group Z, Z being selected among quaternized aliphatic chains, aliphatic chains comprising at least a quaternized cycle, and their use as oxidation base for dyeing keratin fibers, the dyeing compositions containing them, and the oxidation dyeing methods using them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.