Process for the dyeing of polyacrylonitrile materials with cationic benzo-thiazolium azo dye

US5163972A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Wilfried Herter · Rheinfelden (Baden), DE
• Josef Koller · Erkrath, DE

Key dates

• Filing date: Dec 3, 1990
• Grant date: Nov 17, 1992
• Expiry date: Dec 3, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/927
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Process to dye polyacrylonitrile in blue shades with cationic dye compounds: substituted benzothiazolium azo N-alkyl-N-hydroxyalkyl alkyl-aniline salts.