Method for dyeing keratin fibers using at least one compound of azomethine type comprising a pyrazolopyridine unit
US7892294B2 · kind B2 · utility
2Cited by
4References
15Claims
0Family size
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Key dates
| Filing date | Apr 28, 2010 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Apr 28, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/4322
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Provided herein is a method for dyeing keratin fibers, comprising applying to the keratin fibers, at least one composition comprising at least one compound chosen from compounds of leuco type of formula (I), dyes of azomethine type containing a pyrazolopyridine unit of formula (II) corresponding to the compounds of formula (I), mesomeric forms, isomers and tautomers thereof, and also acid-addition salts thereof and solvates thereof:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.