Azo dyes and the production and use thereof
US4327018A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1979 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Sep 17, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/363
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
New azo dyes are disclosed which are free from sulphonic acid groups and which are optionally quaternized in the coupling component, and mixtures of such dyes, which dyes correspond to the formula ##STR1## wherein X represents chlorine, optionally substituted phenyloxy, phenylmercapto, alkylmercapto, naphthyloxy, naphthylmercapto, or a heterocyclic radical which is bound by way of --O--, --NH-- or --S--, X.sub.1 represents hydrogen, cyano, lower alkoxy, carboxy, optionally branched and/or substituted alkyl having 1 to 12 carbon atoms, optionally branched and/or substituted lower alkenyl, optionally substituted cycloalkyl, aralkyl having 7 to 10 carbon atoms, aryl, carbamoyl, or a heterocyclic radical, W represents hydrogen, a cyano group, an optionally branched and/or substituted lower alkyl group, an optionally substituted cycloalkyl group, an aralkyl group (having 7 to 10 carbon atoms), an aryl group or the radicals ##STR2## wherein R.sub.1 and R.sub.2 represent lower alkyl, R.sub.2 also represents optionally substituted cycloalkyl, aralkyl or aryl, and R.sub.3 and R.sub.4 represent hydrogen, lower alkyl, hydroxyalkyl, lower alkoxyaryl, cycloalkyl, aralkyl or aryl, and the alkyl …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.