Water-insoluble azo dyestuffs, their manufacture and their use

US4381262A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Ulrich Buhler · Alzenau, DE
• Dieter Cornelius · Darmstadt, DE
• Rudolf Lowenfeld · Dreieich, DE
• Uwe Kosubek · Büttelborn, DE
• Reinhard Hahnle
• Rudolf Schickfluss

Key dates

• Filing date: Feb 17, 1982
• Grant date: Apr 26, 1983
• Expiry date: Feb 17, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B29/081
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An azo dyestuff of the formula ##STR1## wherein R is linear alkyl having 2 to 4 carbon atoms and R' is linear alkyl having 3 to 5 carbon atoms and isopropyl.