N-alkylhydroxylated secondary para-phenylenediamine compounds, composition for dyeing keratin fibers comprising the same, and dyeing processes using the composition
US7435268B2 · kind B2 · utility
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27Claims
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Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | May 7, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C215/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure relates to novel N-alkylhydroxylated secondary para-phenylenediamines and a process for making these compounds. The present disclosure further relates to a composition for dyeing keratin fibers, including human keratin fibers such as hair, containing, in a medium that is suitable for dyeing, at least one such N-alkylhydroxylated secondary para-phenylenediamine, a process for dyeing keratin fibers using the composition, and a device or kit for dyeing keratin fibers that contains the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.