Combinations of two para-phenylenediamine oxidation bases and a meta-phenylenediamine coupler for the oxidation dyeing of keratinous fibers
US5690696A · kind A · utility
7Cited by
10References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1996 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Jan 19, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/59
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition for the oxidation dyeing of keratinous fibres, especially human keratinous fibres such as hair, which comprises para-phenylenediamine and/or 2-methyl-para-phenylenediamine and/or acid addition salts thereof in combination with at least one appropriately selected meta-phenylenediamine derivative and/or acid addition salts thereof and at least one appropriately selected tertiary para-phenylenediamine derivative, and/or acid addition salts thereof, and to the dyeing process using this composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.