Monoazo dyes which are stable under dyeing conditions, their preparation and their use

US5917121A · kind A · utility

Assignees

• DyStar Textilfarben GmbH & Co. Deutschland KG · DE
• Dystar Japan Ltd. · JP

Inventors

• Ulrich Buhler · Alzenau, DE
• Hubert Kruse · Kelkheim, DE
• Heinz G. Zorn · Neunburg vorm Wald, DE
• Klaus-Wilfried Wanken · Leverkusen, DE

Key dates

• Filing date: Sep 5, 1997
• Grant date: Jun 29, 1999
• Expiry date: Sep 5, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/008
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to the .beta. and .gamma. modifications of the dye of the formula (I) ##STR1## as well as to a process for their preparation and their use for dyeing and printing textile materials of polyester and/or cellulose esters or blended fabrics of these materials and wool or cellulose.