Mixtures of at least three anionic dyes and their use for dyeing natural and synthetic polyamides
US5092905A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1990 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | Oct 4, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/924
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Dye mixtures comprising PA0 (i) as a yellow component, at least one compound of the formula ##STR1## or a salt thereof, wherein R.sub.1 is hydrogen, C.sub.1-4 alkoxy, C.sub.1-4 alkyl or C.sub.1-4 alkyl monosubstituted by halo, PA1 R.sub.2 is C.sub.1-4 alkyl or --COR.sub.6, PA2 wherein R.sub.6 is C.sub.1-6 alkyl, C.sub.1-6 alkoxy or --NR.sub.7 R.sub.8, PA3 wherein each of R.sub.7 and R.sub.8 is independently hydrogen, C.sub.1-6 -alkyl or C.sub.2-6 alkyl mono-substituted by hydroxy, PA1 R.sub.4 is hydrogen, halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or --NR.sub.3 R.sub.9, PA1 R.sub.5 is c.sub.1-4 alkyl or C.sub.2-6 alkyl monosubstituted by hydroxy, PA1 R.sub.10 is hydrogen, halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or --NR.sub.3 R.sub.9, and PA1 R.sub.11 is hydrogen, halo, C.sub.1-4 alkyl or C.sub.1-4 alkoxy, wherein PA2 each R.sub.3 is independently hydrogen or C.sub.1-4 alkyl, and PA2 each R.sub.9 is independently (C.sub.1-6 alkyl)carbonyl or (C.sub.1-6 alkoxy)carbonyl, PA0 (ii) as a red component, at least one compound of the formula ##STR2## or a salt thereof, wherein R.sub.21 is hydrogen, halo or (C.sub.1-4 alkyl)carbonylamino, and PA1 R.sub.22 is trifluoromethyl, --SO.sub.2 Z.sub.1 …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.