Reactive dyes containing a permanent quaternary ammonium group
US5925745A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1998 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | May 11, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/4403
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fiber-reactive dye corresponding to formula (1) ##STR1## in which: Fb is the radical of an azo dye, of a heavy metal complex azo dye, of a formazan dye, of a triphenodioxazine dye or of a phthalocyanine dye; PA1 U.sup.(+) is a permanent quaternary ammonium group; PA1 A.sup.(-) is a colorless anion, and PA1 R.sup.x, R.sub.4, G, Q and n are as defined in the specification, with the proviso that the dye contains at least one group of the vinylsulfone series, such as a group of the formula --SO.sub.2 Y, wherein Y is as defined in the specification, these dyes being capable of dyeing hydroxy- and/or carboxamido-containing fibres, such as cellulosic fibre and wool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.