Fiber-reactive azo dyes having a 4,6-diaminopyridine coupling component
US4900813A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Jun 23, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/51
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel reactive dyes particularly suitable for the dyeing and printing of cellulose-containing fiber materials which give, in combination with a high color yield, dyeings and prints having good fastness properties, said dyes having the formula ##STR1## in which D is the radical of a diazo component, Q is a substituted or unsubstituted phenyl or naphthyl radical or a substituted or unsubstituted aromatic heterocyclic radical and A.sub.1 and A.sub.2 independently of one another are a radical of the formula ##STR2## in which R.sub.1 and R.sub.2 independently of one another are hydrogen, substituted or unsubstituted C.sub.1 -C.sub.6 alkyl or substituted or unsubstituted aryl, or R.sub.1 and R.sub.2 together with the N atom form a further substituted or unsubstituted heterocyclic 5- or 6-ring, with the proviso that at least one of the radicals A.sub.1, A.sub.2 and D has a fiber-reactive group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.