Azo dyestuffs containing sulfonylamino-sulfonyl groups

US3994873A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Richard Sommer
• Herbert Hugl
• Gerhard Wolfrum · Waldershof, DE
• Karl H. Schundehutte · Leverkusen, DE
• Kersten Trautner · Cologne, DE

Key dates

• Filing date: May 8, 1975
• Grant date: Nov 30, 1976
• Expiry date: May 8, 1995

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P3/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dyestuffs of the formula ##SPC1## Wherein PA1 R.sub.1 denotes H, NO.sub.2, CN, ##EQU1## or COOR.sub.10, R.sub.2 denotes H, alkyl, alkoxy, aryl, halogen or NO.sub.2, PA1 R.sub.3 denotes H, halogen, alkyl, alkoxy, aryl or ##EQU2## R.sub.4 denotes H, alkyl or --SO.sub.2 --aryl, R.sub.5 denotes H, halogen, alkyl, aryl or alkoxy, PA1 R.sub.6 denotes H or alkyl, PA1 R.sub.7 denotes alkyl, aryl or dialkylamino and PA1 R.sub.8 and R.sub.9 denote H, alkyl, aryl, aralkyl or hetaryl or can, together with the N atom, form the radical of a heterocyclic structure, PA1 R.sub.10 denotes alkyl and PA1 n denotes 1 or 2, PA1 The OR.sub.4 radical is in the ortho-position or paraposition relative to the azo group and PA1 The --SO.sub.2 --NH--SO.sub.2 --R.sub.7 -- radical is present in place of R.sub.1 in the ring A or in place of R.sub.3 in the ring B.sub.1 are suitable for dyeing and printing natural and synthetic fibrous materials containing amide groups.