Phenylpyrido [1,2-A] indolium-derived thiol/disulfide dye, dye composition comprising this dye, process for lightening keratin materials using this dye
US8398722B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2008 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Sep 18, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/434
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to the dyeing of keratin materials using phenylpyrido[1,2-a]indolinium-derived thiol and disulfide fluorescent dyes. The invention relates to a dye composition comprising a phenylpyrido[1,2-a]indolinium-derived-chromophore thiol or disulfide dye and to a dyeing process with a lightening effect on keratin materials, in particular keratin fibers, especially human keratin fibers, such as the hair, using said composition. It similarly relates to novel phenylpyrido[1,2-a]indolinium-derived-chromophore thiol dyes and to the uses thereof in lightening keratin materials. This composition makes it possible to obtain a coloring with a lightening effect which is particularly resistant and visible on dark keratin fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.