Agents for dyeing keratin fibres, containing at least one dimeric, dicationic azo dye and at least one non-ionic surfactant
US10226648B2 · kind B2 · utility
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7Claims
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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 C)Chemistry; Metallurgy
- CPC primaryC09B44/20
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure relates to agents for dyeing keratin fibres, in particular human hair, containing, in a cosmetic carrier (a) at least one direct dye of formula (I), and (b) at least one non-ionic surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.