Agent and method for dyeing keratin fibers
US7291183B2 · kind B2 · utility
0Cited by
1References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 3, 2004 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Dec 27, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/49
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The object of the present patent application is an agent for coloring keratin fibers based on oxidative dyes and which contains as developer at least one heterocyclic hydrazone derivative of formula (I) (with X═S or O) and as oxidant at least one persulfate salt, further objects being a multicomponent kit and a method for coloring keratin fibers by use of said agent
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.