| abstract |
1,4-Diketopyrrolopyrroles of the formula ##STR1## in which A and B independently of one another are a group of the formula ##STR2## R 1 is a long-chain radical containing a reactive group capable of polymerization, and n R 2 is C 1 -C 6 alkyl, ##STR3## or R 1 . For the definition of the radicals R 3 -R 9 , refer to claim 1. n The novel diketopyrrolopyrroles are suitable for preparing colored polymers with unexpectedly advantageous color effects. |