Compositions for the oxidation dyeing of keratinous fibers comprising at least one coupler, and dyeing methods
US6635091B2 · kind B2 · utility
1Cited by
16References
82Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 23, 2001 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Mar 14, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/42
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compositions for oxidation dyeing keratinous fibers, for example, human keratinous fibers such as hair, comprising at least one oxidation base and at least one coupler chosen from N-(2-hydroxybenzene)carbamate and N-(2-hydroxybenzene)urea compounds and their acid addition salts of formula (I) and processes comprising such compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.