Reactive dyestuffs containing chlorine or fluorine substituents and one or more pyridine radicals linked to the dyestuff at the 2-, 4- or 6-position
US4213899A · kind A · utility
4Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1978 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Mar 13, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/382
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dyestuff of the formula ##STR1## where D is a chromophoric residue PA1 n is 1 or 2 PA1 Z is ##STR2## where R is H, C.sub.1-4 alkyl, C.sub.1-4 alkyl substituted by OH, OSO.sub.3 H, CN or SO.sub.3 H or is phenyl PA1 each hal independently represents a chlorine or fluorine atom occupying one of the remaining 2-, 4- and 6-positions of the pyridine nucleus PA1 X is F, Cl, CN or NO.sub.2 PA1 Y is H, F, Cl, CN or NO.sub.2. These dyestuffs reactively dye cellulose at low temperatures and are less prone to "acid bleeding" than some known reactive dyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.