Patent ID: 6093834
Filing Date: 2000-07-25
Classification: C07C,C07D,C09B

Abstract:
Perylene-3,4-dicarboxylic acid anhydrides of the formula I ##STR7## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 can each be independently of one another hydrogen, halogen, C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.14 cycloalkyl, C.sub.1 -C.sub.20 alkoxy, phenyl, phenyloxy or phenylthio, where phenyl can in each case be mono- or polysubstituted by halogen, C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.14 cycloalkyl and/or C.sub.1 -C.sub.20 alkoxy; --NR.sup.5.sub.2 or --OR.sup.5, wherein R.sup.