1,7-disubstituted perylene-3,4,9,10-tetracarboxylic acid, its dianhydride and diimide

摘要

PCT No. PCT/EP96/05525 Sec. 371 Date Jun. 18, 1998 Sec. 102(e) Date Jun. 18, 1998 PCT Filed Dec. 11, 1996 PCT Pub. No. WO97/22608 PCT Pub. Date Jun. 26, 19971,7-Disubstituted perylene-3,4,9,10-tetracarboxylic dianhydrides I and perylere-3,4,9,10-tetracarboxylic acids Ia where L1, L2 independently of one another are 1,2-ethylene, 1,2-ethenylene and 1,2-ethynylene, and R1, R2 independently of one another are hydrogen or substituted or unsubstituted C1-C30-alkyl, their preparation and use as pigments, laser dyes and precursors for preparing fluorescent dyes, polymeric colorants, pigments and pigment additives, and also 1,7-disubstituted perylene-3,4,9,10-tetracarboxylic diimides (VI) as their intermediates.