Agents for dyeing keratin fibers, containing at least one dimeric, dicationic azo dye and at least one anionic surfactant
US10226647B2 · kind B2 · utility
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4References
8Claims
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Key dates
| Filing date | Oct 2, 2015 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Oct 2, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/8147
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure relates to agents for dyeing keratin fibers, in particular human hair, containing, in a cosmetic carrier, (a) at least one direct dye of formula (I), and (b) at least one anionic surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.