Mixtures of disperse dyestuffs

US4523926A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Horst Brandt · Weiterstadt, DE
• Gunter Gehrke
• Rolf Muders · Cologne, DE
• Hans Otten · London, CA
• Dieter Wiegner · Odenthal, DE

Key dates

• Filing date: Aug 13, 1984
• Grant date: Jun 18, 1985
• Expiry date: Aug 13, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S534/01
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dyestuff mixtures of PA1 (a) an anthraquinone dyestuff of the formula ##STR1## (b) a preferably blue azo dyestuff of the formula ##STR2## wherein R.sub.1 =H or halogen, PA2 R.sub.2 =alkyl, PA2 R.sub.3 =H or alkoxy, and PA2 R.sub.4 and R.sub.5 =alkyl or alkenyl, PA1 and PA1 (c), optionally, shading dyestuffs are particularly inexpensive and are distinguished by good dyebath stability and application properties.