Reactive dyes, their preparation and the use thereof
US5118826A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1991 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Mar 7, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/018
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Reactive dyes of formula ##STR1## wherein Y is a radical of formula ##STR2## or EQU --CO--A--SO.sub.2 --X (3) Z is --NH.sub.2, an unsubstituted or a substituted aliphatic or aromatic amino group; A is an unsubstituted or a substituted aliphatic or aromatic bridging group, and X is .beta.-sulfatoethyl, .beta.-thiosulfatoethyl, .beta.-phosphatoethyl, .beta.-acyloxyethyl, .beta.-haloethyl or vinyl; the benzene rings I, II and III may contain further substituents in addition to 2 to 4 sulfo groups and, in the benzene ring II, to the radical --NH--Y; and the reactive dyes of formula (1) contain only a single fiber-reactive radical, are especially suitable for dyeing or printing cellulosic fiber materials by the methods customarily employed for reactive dyes, and give dyeings and prints of good fastness properties in high color yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.