Particular azomethine direct dyes, dye composition comprising at least one such compound, implementation process therefore and use thereof
US9226883B2 · kind B2 · utility
3Cited by
33References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2012 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Dec 11, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/4322
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to direct dyes of azomethine type of formula (I) below; and also to the use thereof for dyeing keratin fibers, in particular human keratin fibers such as the hair. The invention also relates to a composition for dyeing keratin fibers, comprising such direct dyes in a suitable dyeing medium. Similarly, a subject of the invention is a process for dyeing keratin fibers using the said dye composition, and also a device comprising the same. Finally, the present invention also relates to precursors of these direct dyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.