Composition for the dyeing of human keratinous fibres comprising a monocationic monoazo dye
US7077873B2 · kind B2 · utility
18Cited by
18References
47Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2003 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Jun 9, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B44/16
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A subject-matter of the disclosure is a novel composition for the dyeing of human keratinous fibres, for example, the hair, comprising a monocationic monoazo dye of formula (I) W1-N═N—W2-NW3-W4-W5, the dyeing processes employing it, the use of the dyes of formula (I) as direct dyes and the novel compounds of formula (I).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.