Polymer dyestuffs and their use for dyeing fibres

US5891199A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Rolf Wachter · Düsseldorf, DE
• Joerg Kahre · Monheim, DE
• David Rose · Hilden, DE

Key dates

• Filing date: Sep 30, 1997
• Grant date: Apr 6, 1999
• Expiry date: Sep 30, 2017

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P3/246
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The proposal is for novel polymer dyestuffs obtained by condensing cationic biopolymers, e.g. chitosame, with dyestuffs which have a basic group, preferably a halogen function. The dyestuffs spread as a film on the fibers and can easily be washed out.