Reactive dyes, their preparation and use
US5936072A · kind A · utility
1Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Mar 12, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/4407
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A description is given of reactive dyes of formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, sulfo, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen, PA1 X is fluoro or chloro, and PA1 Y is a --CHT--CH.sub.2 T or --CT.dbd.CH.sub.2 group, and T is bromo or chloro. The reactive dyes of formula (1) are particularly suitable for dyeing or printing cellulosic fiber materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.