Reactive formazan dyestuffs
US5936073A · kind A · utility
3Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Dec 4, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/4407
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides the reactive formazan dyestuffs of the following formula (I), ##STR1## wherein m, Y, R, X.sub.1, X.sub.2, and M are defined in this document. These kinds of dyestuffs have deep-dyeing ability, and they are suitable for dyeing and printing of materials containing either cellulose fibers, such as cotton, synthetic cotton, hemp, and synthetic hemp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.