Process for preparing bis-alkoxy-triazinyl-amino-containing stilbene disulphonic acids or their derivatives

US6248887A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Ulrich Feldhues · Bensberg, DE
• Uwe Vogt · Monheim, DE
• Udo Eckstein · Cologne, DE
• Rolf Brockmann · Bensberg, DE
• Dietmar Fiedel · Bensberg, DE

Key dates

• Filing date: May 21, 1998
• Grant date: Jun 19, 2001
• Expiry date: May 21, 2018

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H21/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for the preparation of stilbene-disulphonic acids containing bis-alkoxy-triazinyl-amino, or derivatives thereof, characterized in that stilbene-disulphonic acids containing bis-chlorotriazinyl-amino, or derivatives thereof, are reacted with at least 10 molar equivalents, based on the stilbene-disulphonic acid compound, of a C.sub.1 -C.sub.4 -monoalkanol.