Sulfonamidobenzene-azo-aminopyrazole dyestuffs
US4055557A · kind A · utility
1Cited by
23References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1973 |
| Grant date | Oct 25, 1977 |
| Priority date | — |
| Expiry date | Aug 10, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/53
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Monoazo dyestuffs of the formula ##STR1## wherein R.sub.1 = hydrogen, alkyl, cycloalkyl, aralkyl or aryl, R.sub.2 = sulphoalkyl, sulfoaryl, sulphoalkylaryl or sulphatoalkyl, R.sub.3 = alkyl, aryl, carboxy, carbonamide or carboxylic acid ester, R.sub.4 = hydrogen, alkyl, cycloalkyl, aryl, aralkyl, or the radical of a heterocyclic compound, X = hydrogen, halogen, nitrile, alkyl, alkoxy, trifluoromethyl, nitro, carbonamide or carboxylic ester and Y = hydrogen, halogen, alkoxy or acylamino. The dyestuffs are useful for dyeing natural and synthetic fiber materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.