Preparation of anthraquinone imide compounds

US5525743A · kind A · utility

Assignee

• BASF SE

Inventors

• Udo Bergmann · Darmstadt, DE
• Helmut Hoch
• Heike Kilburg · Speyer, DE
• Reinhold Kohlhaupt · Bischofswerda, DE
• Matthias Niedenbrueck · Ludwigshafen, DE

Key dates

• Filing date: Oct 21, 1994
• Grant date: Jun 11, 1996
• Expiry date: Oct 21, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2603/54
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The preparation of anthraquinone imide compounds by condensation of anthraquinone compounds containing at least one primary amino group with halogenized aromatics or by condensation of halogenized anthraquinone compounds with primary aromatic amines, in the presence of a vat-dyeing catalyst and an acid-binding agent in an organic solvent, in which the organic solvent used is an alkyl benzoate.