Mixture of fiber-reactive azo dyes, process for preparing them and their use
US5993492A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1998 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Nov 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/918
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dye mixture comprising at least two dyes of the formula (1) ##STR1## in which: D is phenyl or naphthyl which is substituted by 1, 2 or 3, sulfo groups PA1 R.sup.A is aminocarbonyl of the formula --CO--NH.sub.2 or is a group of the formula (2) ##STR2## in which X is fluoro or hydroxyl, PA1 R.sup.1 is hydrogen, methyl, ethyl, methoxy or chloro, PA1 R.sup.2 is hydrogen, methyl, ethyl, methoxy or ethoxy, PA1 Y is vinyl or is ethyl substituted in .beta.-position by a substituent which can be eliminated by the action of an alkali to form the vinyl group, or is .beta.-hydroxyethyl, and PA1 n is zero or 1 (and if n is zero this group is hydrogen).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.