Patent Number: 6,166,210

Title: Perylene imide monocarboxylic acids

Abstract: Perylene imide monocarboxylic acids of the general formula I ##STR1## perylene-3,4-dicarboxylic acid imides, perylene imide carboxylic acid derivatives and a process for the preparation of these compounds as well as their use, inter alia, as colourants.

Inventors: Langhals; Heinz (Ottobrunn, DE), Jona; Wolfgang (Waldkraiburg, DE)

Assignee: Ciba Specialty Chemicals Corporation

International Classification: C07D 471/00 (20060101); C07D 221/18 (20060101); C07D 221/00 (20060101); C07D 471/06 (20060101); C09B 5/00 (20060101); C09B 5/62 (20060101); C07D 221/18 ()

Expiration Date: 12/26/2017