Disazo dyestuffs containing a thiazole central component

US4124581A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Dieter vor der Bruck · Bonn, DE
• Gerhard Wolfrum · Waldershof, DE

Key dates

• Filing date: Dec 16, 1976
• Grant date: Nov 7, 1978
• Expiry date: Dec 16, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B39/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dyestuffs of the formula ##STR1## wherein D represents the radical of an aromatic carbocyclic or heterocyclic diazo component, PA1 K represents the radical of a carbocyclic or heterocyclic coupling component, PA1 A and B represent a direct bond or a bridge member, PA1 R.sub.1 represents hydrogen, C.sub.1 -C.sub.4 -alkyl, optionally substituted phenyl or naphthyl, carbo-C.sub.1 -C.sub.4 -alkoxy, cyano or optionally substituted carboxamide, PA1 R.sub.2 represents C.sub.1 -C.sub.4 -alkyl or optionally substituted phenyl or naphthyl and PA1 m and n represent 0, 1 or 2, and the sum of m and n denotes 1 or 2, Are suitable for the dyeing of natural and synthetic fibre materials, particularly polyamide materials in level, violet to blue-green shades in good color yield and with good fastness properties.