Dyeing compositions for keratin fibres containing meta-phenylenediamines
US4330292A · kind A · utility
12Cited by
3References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1980 |
| Grant date | May 18, 1982 |
| Priority date | — |
| Expiry date | Dec 11, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/32
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention resides in the use of the compounds having the formula given below, or an acid salt thereof, as couplers in dyeing compositions for keratin fibres which contain an oxidation base: ##STR1## in which formula n is equal to 2, 3 or 4 and R.sub.1 and R.sub.2 are identical or different and represent an alkyl group having from 1 to 4 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.