Composition for hair dyeing which contains a para base and an ortho base
US4295848A · kind A · utility
14Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1980 |
| Grant date | Oct 20, 1981 |
| Priority date | — |
| Expiry date | Oct 29, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to compositions intended for dyeing keratin fibers which contain, as the only oxidative dyestuffs, oxidative dyestuff precursors of the para type and of the ortho type, at least one said precursor of the para type being an aromatic diamine, or specified formula or a specified bis-condensed precursor and at least one said precursor of the ortho type which is an ortho-aminophenol, ortho-diphenol, ortho-phenylenediamine or a derivative thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.