Process for dyeing keratin-containing fibres with cationic dyes
US5733343A · kind A · utility
62Cited by
14References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1996 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Nov 26, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/43
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Keratin-containing fibres, in particular human hair, are dyed using dyes of formulae (1) to (6) indicated in claim 1. These dyes make it possible to dye by the trichromatic principle even in dark shades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.