Use of tetra-azapentamethine compounds as direct dyeing agents and novel tetra-azapentamethine compounds
US7399320B2 · kind B2 · utility
16Cited by
1References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2007 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | Dec 11, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B50/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns the use as direct dyeing agent of at least one tetra-azapentamethine compound, a dyeing composition comprising at least such a compound, as well as a method for dyeing keratinous fibers, in particular human keratinous fibers and more particularly hair, which consists in applying at least one composition comprising such a compound. The composition also concerns tetra-azapentamethine compounds of formula (I). The invention further concerns a method for bleaching such compounds, as well as bleaching keratinous fibers previously dyed therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.