Polymer dyestuffs and preparation and use thereof

US5298583A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Ludger Heiliger · Leverkusen, DE
• Hans-Ulrich Siegmund · Cologne, DE
• Herbert Hugl
• Antonius Lobberding · Wuppertal, DE
• Eberhard Kuckert · West Haven, US
• Bruno Bomer · Bensberg, DE
• Thomas Böcker · Leichlingen, DE
• Gunther Franke · Mount Pleasant, US

Key dates

• Filing date: Apr 28, 1992
• Grant date: Mar 29, 1994
• Expiry date: Apr 28, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B69/10
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention relates to polymer dyestuffs, i.e. polymer-bound dyestuffs, to a process for their preparation and to their use, for example as markers in analytical procedures. Polymer dyestuffs contain linkable functional groups and are water-soluble under customary conditions of analysis. The polymer portion is usually responsible for this water solubility. The dyestuffs per se are often water-insoluble.