Cationic diaminopyrazoles, a process for producing them and colorants containing these compounds
US7462204B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Sep 2, 2004 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Apr 16, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B44/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel cationic 4,5-diaminopyrazole derivatives of general formula (I)the colorants for keratin fibers containing these compounds and a process for producing the compounds of formula (I).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.