Nitro-p-phenylenediamine derivatives, processes for their preparation and coloring agents containing these for use on keratin fibres
US5067967A · kind A · utility
2Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Apr 25, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C215/16
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to compounds of the general formula I ##STR1## wherein R.sup.1 and R.sup.2 independently of one another each represent a hydrogen atom, a (C.sub.1 -C.sub.2) alkyl group, a hydroxy (C.sub.2 -C.sub.3) alkyl group or a 2,3-dihydroxypropyl group and X is a florine atom or a trifluoromethyl group, processes for their preparation and aqueous hair coloring agents containing these compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.