Quinophthalone dyestuffs

US4101551A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Manfred Groll · Leverkusen, DE
• Hans-Samuel Bien

Key dates

• Filing date: Jul 2, 1976
• Grant date: Jul 18, 1978
• Expiry date: Jul 2, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/523
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to water-insoluble quinophthalone dyestuffs of the formula ##STR1## in which T represents W--Ar or ##STR2## and Ar denotes aryl, PA0 W denotes oxygen, sulphur or N--R, PA0 R denotes hydrogen or alkyl, PA0 A denotes alkylene, O R.sub.1 denotes alkyl or aryl, PA0 R.sub.2 denotes hydrogen or alkyl, PA0 X denotes halogen, alkyl, alkoxy, nitro or acylamino, PA0 Y denotes hydrogen or halogen, PA0 Z denotes hydrogen, alkyl or halogen and PA0 n denotes a number from 0 to 3 The new dyestuffs and their mixtures are distinguished by good affinity to polyester fibres and good general fastness properties.