US 12,473,432 B2 · Isomeric mixture of reactive dyes and their use for the dyeing or printing of textile fibre materials

Abstract

The present invention relates to the field of isomeric mixture of reactive dyes that are suitable for the dyeing or printing of nitrogen-containing or hydroxy-group-containing fibre materials and yield on such materials dyeings or prints having a good build-up behaviour, a high fixation rate, good washing off properties of the unfixed dyes and good all-round fastness properties, as well as a good stability to various dyeing parameters such as a good bath stability. Furthermore, the present invention relates to a process for dyeing or printing of nitrogen-containing or hydroxy-group-containing fibre materials, wherein the isomeric mixture of reactive dyes according to the invention is used. The isometric mixture of the present invention comprises at least an isomer of formula (Ia) and an isomer of formula (Ib).

Claims18

Dependent claims

An isomeric mixture of at least one reactive dye of formula (I):

wherein,
R1 is hydrogen or C1-C4alkyl,
R2 is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, sulfo, carboxy or halogen,
Z is a fibre-reactive radical of formula —SO2—CH═CH2, —SO2—(CH2)2—Y, —NH—(CH2)2—O—(CH2)2—SO2—CH═CH2, —NH—(CH2)2—O—(CH2)2—SO2—(CH2)2—Y, —NH—(CH2)2—O—(CH2)3—SO2—CH—CH2, —NH—(CH2)2—O—(CH2)3—SO2—(CH2)2—Y, —NHCO—(CH2)3—SO2—CH—CH2 or —NHCO—(CH2)3—SO2—(CH2)2—Y
wherein Y is a group removable under alkaline conditions,
X is halogen, and
M is hydrogen, an organic salt, an alkali metal or one equivalent of an alkaline earth metal.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/833,795Filed 19 Jan 2023

Priority

EP 2215314925 Jan 2022

Published

US 2025/0145831 A18 May 2025

Granted

18 Nov 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

C09B 29/0011
From diazotized anilines: from diazotized anilines directly substituted by a heterocyclic ring
C09B 62/085
Azo dyes: monoazo dyes
C09B 67/0048
Mixtures of two or more reactive azo dyes: all the reactive groups being directly attached to a heterocyclic system
C09D 11/037
Characterised by features other than the chemical nature of the binder: characterised by the pigment

Isomeric mixture of reactive dyes and their use for the dyeing or printing of textile fibre materials

Life of this patent

Isomeric mixture of reactive dyes and their use for the dyeing or printing of textile fibre materials

Life of this patent

Abstract

Claims18