Water-soluble diphenylamine-azo-sulfatoalkoxyphenyl dyestuffs

US4119623A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Herbert Hugl
• Hans Otten · London, CA
• Richard Sommer
• Gerhard Wolfrum · Waldershof, DE

Key dates

• Filing date: Aug 12, 1976
• Grant date: Oct 10, 1978
• Expiry date: Aug 12, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/0072
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dyestuffs, which in the form of the free acid of the formula ##STR1## wherein R.sub.1 denotes hydrogen, nitro, cyano, SO.sub.2 --R.sub.7, CONR.sub.8 R.sub.9, SO.sub.2 NR.sub.8 R.sub.9, SO.sub.2 OR.sub.10, COOR.sub.10, SO.sub.2 --NHSO.sub.2 --R.sub.11, sulpho or alkyl, PA1 R.sub.2 denotes hydrogen, nitro, halogen or optionally substituted alkyl, alkoxy or aryl, PA1 R.sub.3 denotes hydrogen, halogen, SO.sub.2 --R.sub.7, SO.sub.2 --NR.sub.8 R.sub.9 or optionally subsituted alkyl, alkoxy or aryl, PA1 R.sub.4 denotes hydrogen, halogen or optionally substituted alkyl, alkoxy or aryl, PA1 R.sub.5 denotes hydrogen or optionally substituted alkyl, PA1 R.sub.6 denotes alkylene, PA1 R.sub.7 denotes optionally substituted alkyl, aryl or aralkyl, PA1 R.sub.8 and R.sub.9 denote hydrogen, optionally substituted alkyl, cycloalkyl, aryl or aralkyl or the radical of a heterocyclic compound or, together with the N-atom, denote a heterocyclic structure, PA1 R.sub.10 denotes hydrogen or optionally substituted alkyl, aryl or aralkyl, PA1 R.sub.11 denotes optionally substituted alkyl or aryl or dialkylamino and PA1 n denotes 1 or 2 and PA1 The radical O--R.sub.6 --OSO.sub.3 H is in the ortho-position or …