Compsitions for dyeing keratinous fibers comprising an ortho-diaminopyrazoles, a coupler or direct dye, and a manganese salt, and processes for dyeing keratinous fibers with these compositions
US5769902A · kind A · utility
30Cited by
6References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compositions for dyeing keratinous fibers comprising at least one an ortho-diaminopyrazole or an acid addition salt thereof and a manganese salt as well as a dyeing process using these compositions, without any oxidizing agent other than atmospheric oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.