Cationic benzothiazole disazo compounds
US4581445A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1983 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Sep 16, 2003 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There are described novel cationic benzothiazole disazo compounds of the formula ##STR1## K independently of one another are each a coupling component, R independently of one another are each an unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl group, PA1 R.sub.1 independently of one another are each hydrogen, unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl, unsubstituted or substituted C.sub.1 -C.sub.4 -alkoxy, or halogen, PA1 X is the direct bond, --(CH.sub.2).sub.y wherein y is a number from 1 to 4, --CH.dbd.CH--, a phenylene group, a naphthylene group, a heterocyclic radical, an --NH-alkylene-(C.sub.1 -C.sub.6)--NH-- radical or an --NH-arylene-NH-- radical, and PA1 An is an anion, with the proviso that when the coupling component K is a dimethylaminophenyl radical, the divalent bridge member X is not the --(CH.sub.2).sub.2 -- group are useful for dyeing and printing textile materials, leather and in particular paper. The dyeings obtained have good fastness properties, especially good fastness on paper to light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.