Disazo dyestuff sulphuric acid ester
US4247460A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1978 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Sep 13, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/533
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A dyestuff particularly for synthetic fibers of the formula ##STR1## wherein R.sub.1 ' denotes hydrogen, methyl, ethyl or cyclohexyl, PA0 R.sub.2 ' denotes chlorine, methoxy, methyl, ethoxy, ethyl, trifluoromethyl or acetylamino, PA0 R.sub.3 ' denotes hydrogen, methyl, methoxy, ethyl and ethoxy, PA0 R.sub.4 ' denotes hydrogen, methyl, methoxy, ethyl and ethoxy, PA0 R.sub.5 ' denotes hydrogen, methyl, methoxy, chlorine or phenyl, PA0 R.sub.6 ' denotes hydrogen or methyl, PA0 R.sub.7 ' denotes hydrogen, methyl, ethyl, 2-hydroxyethyl, 2-hydroxypropyl and 2-hydroxybutyl, PA0 m' denotes 0 or 1 and PA0 X denotes optionally branched C.sub.2 to C.sub.4 alkylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.