Azo compounds having a 3-sulphomethyl-pyrazolone-(5) coupler component
US4141890A · kind A · utility
3Cited by
6References
3Claims
0Family size
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Key dates
| Filing date | Oct 29, 1976 |
| Grant date | Feb 27, 1979 |
| Priority date | — |
| Expiry date | Oct 29, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/006
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Azo compounds of the formula ##STR1## wherein R is hydrogen, an alkyl or aryl radical and D is the radical of a diazo component are valuable dyestuffs for coloring textile materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.