1,3,3-Trimethyl-2-methylene indoline cationic n-methyl azo dyes
US4168264A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1977 |
| Grant date | Sep 18, 1979 |
| Priority date | — |
| Expiry date | Jul 5, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B26/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
New yellow cationic dyes of the formula ##STR1## ARE DISCLOSED WHEREIN X represents hydrogen or halogen, PA1 R represents an optionally substituted alkyl group or cycloalkyl group, PA2 Or --CH.sub.2 -- if this is linked with the phenylene group in the o-position with respect to the oxygen bond to form a 6-membered ring and n represents 1, PA1 R.sub.1 represents an unsubstituted, straight-chain or branched-chain alkyl group having 1 to 5 carbon atoms, PA1 R.sub.2 represents a substituted, or preferably unsubstituted, straight-chain or branched-chain alkyl group having 1 to 5 carbon atoms, PA1 N represents the numbers 1 or 2, and PA1 An represents an anion, which dyes are useful for dyeing and printing of textile material especially polyacrylonitrile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.