Mixtures of fiber-reactive azo dyes, their production and their use

US7381256B2 · kind B2 · utility

Assignee

• DyStar Textilfarben GmbH & Co. Deutschland KG · DE

Inventors

• Stefan Meier · Neubiberg, DE
• Uwe Reiher · Hofheim, DE
• Werner Russ · Flörsheim, DE
• Christian Schumacher · Frankfurt am Main, DE

Key dates

• Filing date: Apr 9, 2005
• Grant date: Jun 3, 2008
• Expiry date: May 23, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/0052
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a dye mixture which comprises at least one dye of the general formula (I)and at least one dye of the general formula (II)in which D1, D2, W1, W2, Y1, Y2, R1 to R6, M, m and n are defined as indicated in claim 1, to processes for preparing them, to their use, and to inks comprising them for digital printing.