Composition for dyeing keratin fibers which contain at least one diaminopyrazole, dyeing process, novel diaminopyrazoles and process for their preparation
US6645258B2 · kind B2 · utility
241Cited by
7References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Dec 1, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D231/38
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to novel compositions for the oxidation dyeing of keratin fibers, comprising at least one specific diaminopyrazole derivative, to the dyeing process using this composition, to novel diaminopyrazole derivatives and to a process for their preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.