Azo dyes containing a 4-aminopyrazolisothiazole diazo compound
US5091517A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Nov 6, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/095
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to novel azo dyes of the formula ##STR1## wherein R.sup.1 is an alkyl radical containing 1 to 12 carbon atoms, which is unsubstituted or substituted by hydroxy, alkoxy, cyano or phenyl, or is an aryl radical selected from the group consisting of phenyl, 1-naphthyl, 2-naphthyl, 2-pyridyl, 4-pyridyl, 2-pyrimidinyl and 2-thienyl, these radicals being unsubstituted or substituted by halogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.4 alkoxy, nitro, cyano, --NHR.sup.3, --NH--C.sub.2 -C.sub.6 alkanoyl,--NH--benzoyl, phenoxy, COOR.sup.3, --CONHR.sup.3, phenyl, sulfo or C.sub.1 -C.sub.4 alkylsulfone, PA1 R.sup.2 is hydrogen or a radical as defined for R.sup.1, PA1 R.sup.3 is hydrogen, C.sub.1 -C.sub.6 alkyl, which is unsubstituted or substituted by hydroxy, alkoxy, cyano or phenyl, or phenyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.4 alkoxy, nitro, cyano, --NH--C.sub.2 -C.sub.6 alkanoyl, --NH--benzoyl, phenoxy, phenyl, sulfo or C.sub.1 -C.sub.4 alkylsulfone, and PA1 KK is the radical of a coupling component selected from the group consisting of N-arylacetamides, phenols, pyridones, quinolines, pyrazoles, indoles, diphenyla…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.