Monoazo dyes which are free from water-solubilizing groups and which contain a fluorosulphonyl group and process for colouring polyamides and polyester materials therewith
US5739299A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1996 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Jul 15, 2016 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for coloring a synthetic textile material or fibre blend thereof which comprises applying to the synthetic textile material a compound or mixture thereof, which is free from water solubilizing groups, of Formula (1): EQU A--N.dbd.N--D Formula (1) wherein PA1 A and D each independently is an optionally substituted heterocyclic or carbocyclic group and at least one of A or D carries directly at least one --SO.sub.2 F group or carries a substituent to which at least one --SO.sub.2 F group is attached except for 4-(4-fluorosulphonylphenylazo)-N,N-dimethylaniline, provided that one of A or D is not 3,5-difluorosulphonylthien-2-yl, optionally substituted 1-phenyl-pyrazol-4-yl-5-one or ##STR1## or that one of A or D does not carry an --NCH.sub.2 CH(OH)CH.sub.2 Cl, --NCOCH.sub.2 Cl or --NCH.sub.2 CH.sub.2 SO.sub.2 F substituent. The presence of one or more --SO.sub.2 F groups in a dye molecule generally improves the properties of that dye and confers surprisingly good wet fastness and light fastness properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.