Use of cationic dibenzenic nitro compounds for dyeing keratin fibers, dye compositions and dyeing processes
US6468316B1 · kind B1 · utility
7Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Jan 7, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/065
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The subject of the invention is dyeing compositions containing dibenzenic nitro compounds comprising at least one cationic group Z, Z being chosen from quaternized aliphatic chains, aliphatic chains comprising at least one quaternized saturated ring and aliphatic chains comprising at least one quaternized unsaturated ring, their use as direct dyes in dyeing applications for keratin substances, in particular human keratin fibers and especially the hair, and to the direct dyeing process employing these compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.