Colorants comprising cationic azacyanine dyes
US7413578B2 · kind B2 · utility
10Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2006 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | May 27, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B55/009
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to agents comprising cationic azacyanine dyes of the formula (I) for coloring keratin fibers, such as, for example, wool, silk or furs and in particular human hair(where X1 is N—R1, O or S and X2 is N—R2, O or S),and to a method of coloring hair with varying degrees of damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.