2,6-Dihydroxy-3-cyano-4-methylpyridine containing azo dyes which contain a functional amino group
US3966706A · kind A · utility
5Cited by
11References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1973 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Sep 7, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B44/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Basic azo dyestuffs of the general formula ##SPC1## Wherein D denotes the residue of a diazo component which may contan an azo group and which contains at least one amino, hydrazino or etherified hydroxylamino group that may be quaternated are valuable dyestuffs for dyeing and printing synthetic fibres distinguished by a good fastness to light and a very good fastness to sublimation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.