Water-soluble disazo compounds and new bis-(aminophenoxy)-ethane compounds having fiber-reactive groups as the tetrazo components, and use of the disazo compounds as dyestuffs
US4534908A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1983 |
| Grant date | Aug 13, 1985 |
| Priority date | — |
| Expiry date | Sep 26, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/513
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Water-soluble disazo compounds of the formula (1) ##STR1## and diamino compounds serving as starting compounds (tetrazo components), of the formula (4) ##STR2## in which the formulae moieties occurring twice, namely Z, K and X, in each case have a meaning identical to one another and the groups Z are bonded to the two benzene nuclei in each case in the ortho- or in each case in the para-position relative to the ethylenedioxy substituent, and the azo groups or amino groups and the groups Z in the benzene nuclei are in each case bonded in the meta-position relative to one another and K is the radical of a coupling component containing a sulfato, carboxy or sulfo group, X denotes a hydrogen atom or a fiber-reactive group and Z is a group of the formula --SO.sub.2 --CH.dbd.CH.sub.2 or --SO.sub.2 --CH.sub.2 --CH.sub.2 --Y in which Y denotes a radical which can be eliminated in aqueous medium under alkaline or acidic conditions or the hydroxy group. Disazo compounds of the formula (1) can be used as dyestuffs having fiber-reactive properties for dyeing, for example, cellulose fiber material and wool and be prepared by tetrazotizing diamines of the formula (4) and coupling with coupling c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.