Polycyclic vat dyes

US5534627A · kind A · utility

Assignee

• BASF SE

Inventors

• Udo Bergmann · Darmstadt, DE
• Harald Schlueter · Bad Dürkheim, DE
• Michael Schmitt · Worms, DE

Key dates

• Filing date: Aug 10, 1994
• Grant date: Jul 9, 1996
• Expiry date: Aug 10, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B5/40
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Polycyclic vat dyes of the general formula I ##STR1## where X is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen or nitro, obtainable by reacting (9)-benzo-5-aminoanthraquinonyl(2,1-h)-8-azapyrenone-3(II) ##STR2## with a benzoyl chloride of the formula III ##STR3## in a dipolar aprotic solvent.