Cationic dyes
US4288589A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Jun 20, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B23/105
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There are described novel greenish-yellow cationic dyes of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen, lower alkyl, lower alkoxy or NO.sub.2, PA0 R.sub.2 is unsubstituted lower alkyl, or lower alkyl which is substituted by: hydroxyl, lower alkoxy, halogen, CN, carboxylic acid amide, carboxylic acid alkyl ester or phenyl, or R.sub.2 is alkenyl (C.sub.3 -C.sub.4), the PA0 R.sub.3 's independently of one another are each lower alkyl, or both R.sub.3 's together form a carbocyclic 5-, 6- or 7-membered ring, PA0 R.sub.4 is hydrogen, lower alkyl, unsubstituted aryl or substituted aryl, PA0 R.sub.5, R.sub.6 and R.sub.7 independently of one another are hydrogen, lower alkyl, lower alkoxy, halogen, NO.sub.2, CN or lower alkylsulfonyl, and PA0 A is an anion; processes for producing them, and their use for dyeing and printing textile materials, particularly polyacrylonitrile materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.