Keratin dyeing compounds, keratin dyeing compositions containing them, and use thereof
US7351266B2 · kind B2 · utility
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26References
37Claims
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Key dates
| Filing date | Mar 4, 2005 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Jan 25, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/4986
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Tricyclic 5-6-5 heteroaromatic keratin dyeing compounds having two heteroatoms. Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and one or more tricyclic 5-6-5 heteroaromatic keratin dyeing compounds having two heteroatoms. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.