Reactive dyestuffs, their manufacture and use
US4261889A · kind A · utility
10Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1978 |
| Grant date | Apr 14, 1981 |
| Priority date | — |
| Expiry date | Oct 19, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Dyestuffs of the formula ##STR1## wherein R.sub.1 is hydrogen or a low-molecular alkyl group, R.sub.2 is hydrogen, a low-molecular alkyl group, an aryl radical or the radical of an organic dyestuff containing sulpho groups, and R.sub.1 and R.sub.2 together with the nitrogen atom can form a ring, X.sub.1 and X.sub.2 are hydrogen, a sulpho group or the --N.dbd.N--K radical, wherein K is the radical of a coupling component and, if one X is the --N.dbd.N--K radical, the other X is a sulpho group, and the benzene ring A can contain further substituents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.