Isoindolin pigments

Neue Isoindolinpigmente der Formel (I) worin R¹: die Bedeutung -CN hat und R² die Bedeutung CN oder ein 5- bis 7-gliedriger Heterocyclus; R³: Wasserstoff, C1-C4-Alkyl, Phenyl, C1-C4-Alkoxy, Halogen oder C2-C4-Acylamino; R : Wasserstoff, C1-C4-Alkyl, Halogen, Trifluormethyl, Methoxy, Ethoxy oder Nitro bedeuten; m: eine Zahl von 1 bis 4 ist; n: eine Zahl von 1 bis 3 ist; und; R : Wasserstoff oder C1-C4-Alkyl bedeutet. Novel isoindoline pigments of formula (I) are claimed, as are also (i) prepn. of (I) by reacting an isoindoline of formula (II) having nucleophilically-exchangeable gps. X and Y in the 1- and 3-positions with a cpd. of formula (III) in which the H atoms of the -CH2- gp. are CH acids so as to give an intermediate of formula (IV) which is then reacted with a benzimidazolone of formula (V); and (ii) the use of (I) in pigmenting high mol. wt. organic materials. R = CN; R = (a) CN; (b) an (un)satd. (non)aromatic 5-7 membered N, O and/or S heterocyclic ring opt. modified by condensation or bridging to further heterocyclic or isocyclic ring systems; (c) -CONR R where R and R = H or 1-4C alkyl; or (d) -CONR R where R = unsubstd. or with at least 5 1-4C alkyl, halogen, CF3, 1-4C alkoxy, carbo(m)ethoxy or carbonamide- or with one 1-4C alkyl or phenyl gp.-substd. carbonamide, NO2, 1-4C alkylamino or OH-substd. (un)satd., (non)aromatic, iso- or hetero-cyclic (N, O and/or S) 5-7-membered ring opt. modified as per the ring of (b) above; or R and R together = ring as per (b) above opt. substd. as per (d) but excluding NO2; R = H, 1-4C alkyl, phenyl, 1-4C alkoxy, halogen or 1-4C acylamino; R = H, 1-4C alkyl, halogen, CF3, MeO, EtO or NO2; m = 1, 2, 3 or 4; n = 1, 2 or 3; and R = H or 1-4C alkyl.