Monoazo compounds

US3971740A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Nalin Binduprasad Desai · Yellandu, IN
• Ponnusami Jayaraman · Gondia, IN
• Visvanathan Ramanathan · Basel, CH
• Klaus Artz · Muttenz, CH
• Navnitrai Nagarji Naik · Gondia, IN
• Walter Jenny · Basel, CH

Key dates

• Filing date: Mar 5, 1974
• Grant date: Jul 27, 1976
• Expiry date: Mar 5, 1994

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/933
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Azo dyestuffs containing at least one group of formula --X--CO--NR--SO.sub.2 aryl, wherein R is hydrogen alkyl or cycloalkyl and X is an oxygen or sulphur atom or a group of formula --NR.sub.1 --, wherein R.sub.1 is hydrogen alkyl or cycloalkyl. The dyestuffs dye polyester fibers in fast shades.