P-aminophenols and colorants containing said compounds
US6840965B2 · kind B2 · utility
4Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2001 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Jan 23, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The object of the invention are p-aminophenol derivatives of general formula (I) or physiologically tolerated, water-soluble salts thereof and oxidative coloring preparations based on a developer-coupler combination containing at least one p-aminophenol derivative of formula (I).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.