Disperse monoazo dyestuffs containing a thiophene residue
US4079050A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1976 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Feb 2, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/0807
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The water-insoluble monoazo dyestuffs, free from sulphonic acid and carboxylic acid groups, which are of the formula: ##STR1## wherein Y is hydrogen, lower alkyl, optionally substituted phenyl or nitro; Z is nitro, cyano, optionally substituted phenyl, optionally substituted lower alkoxycarbonyl or carbonamido; T is hydrogen, optionally substituted lower alkyl or optionally substituted lower alkoxy; W is an acylamino group of the formula: ##STR2## wherein X.sup.1 is hydrogen or lower alkyl, X.sup.2 is hydrogen or an optionally substituted hydrocarbon or heterocyclic radical, and A is a direct link or --0-- or ##STR3## and R.sup.1 and R.sup.2 each independently represent a hydrogen atom or an optionally substituted alkyl radical or R.sup.1 and R.sup.2 together form with the nitrogen atom N a 5- or 6-membered nitrogen-containing heterocyclic ring, a process for the manufacture of the said dyestuffs by diazotization and coupling, and the use of the said dyestuffs for coloring synthetic textile materials, in particular aromatic polyester textile materials which they color in violet to green shades possessing excellent fastness to light, to wet treatments and to dry heat treatments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.