Use for dyeing keratin fibres of a compound of azomethine type bearing two pyrazolopyridine units
US10240043B2 · kind B2 · utility
1Cited by
18References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2015 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Dec 17, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B69/107
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a compound chosen from the compounds of formulae (I) and (II), the leucoforms thereof, the optical and geometrical isomers thereof and the tautomers thereof, and also the addition salts thereof with an acid or a base, and the solvates thereof. The invention also relates to the use of these particular compounds for dyeing keratin fibres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.