Keratin dyeing compounds, keratin dyeing compositions containing them, and use thereof
US7229480B2 · kind B2 · utility
3Cited by
25References
39Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 21, 2005 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Dec 3, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/49
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Bicyclic 5-5 heteroaromatic compounds having a ring junction nitrogen and incorporating thia or oxa heteroatoms heteroatoms. Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and one or more bicyclic 5-5 heteroaromatic compounds having a ring junction nitrogen and incorporating thia or oxa heteroatoms 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.