Diamino-nitro-benzene compounds
US3933886A · kind A · utility
7Cited by
1References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 16, 1974 |
| Grant date | Jan 20, 1976 |
| Priority date | — |
| Expiry date | May 16, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B51/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A hair dye preparation contains diamino-nitrobenzene compounds as a direct hair dye or contains diamino-nitrobenzene compounds as coupling components in combination with developing components for oxidation dyestuffs. A process for dyeing human hair comprises applying one of these preparations to the hair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.