Pigment compositions comprising pyrrolo[3,4-c]pyrroles

A pigment composition comprising:

• a) a 1,4-diketopyrrolo[3,4-c]pyrrole of the formula (I)
• wherein
• R1 and R2 independently of each other are
• R31, R32, and R33 independently of one another are hydrogen, carbamoyl, C2-18-alkylcarbamoyl, C2-18-alkoxycarborlyl, C2-18-alkanoylamino, halogen, C1-C24alkyl, C1-C6alkoxy, C1-C18alkylthio, C1-C18alkylamino, di(C1-C18alkyl)amino, —CN, —NO2, phenyl, trifluoromethyl, C5-C6cycloalkyl, —C═N—(C1-C24alkyl),
• imidazolyl, pyrazolyl, triazolyl, piperazinyl, pyrrolyl, oxazolyl, benzoxazolyl, benzothiazolyl, benzimidazolyl, morpholinyl, piperidinyl, or pyrrolidinyl,
• T2 is —C(O)—NH—, —C(O)—O—, —NH—C(O)—, —CH2—, —CH(CH3)—, —C(CH3)2—, —CH═N—, —N═N—, —O—, —S—, —SO—, —SO2—, or —NR38—,
• R34 and R35 independently of one another are hydrogen, halogen, C1-6-alkyl, C1-6-alkoxy, or —CN,
• R36 and R37 independently of one another are hydrogen, halogen, or C1-6-alkyl, and
• R38 is hydrogen or C1-C6-alkyl;
• and
• b) from 0.5 to 4 weight % based on the weight of the 1,4-diketopyrrolo[3,4-c]pyrrole of formula (I) of a compound of formula (V)
• wherein
• X is O, S, or NR14, wherein R14 is linear or branched C1-10-alkyl, C7-10-aralkyl, or C6-10-aryl;
• R12 and R13 are independently of each other hydrogen, linear or branched C1-10-alkyl, linear or branched C1-10-alkoxy, linear or branched C1-10-thioalkyl, C5-10-cycloalkyl, C6-10-aryloxy, C6-10-arylthio, C7-10-aralkyloxy, C7-10-aralkylthio, halogen, CONR5R6, C(O)OR7, or SO2R9;
• R5 and R6 are hydrogen, linear or branched C1-10-alkyl, C5-10-cycloalkyl, or C6-10-aryl,
• R7 is hydrogen, linear or branched C1-10-alkyl, C5-10-cycloalkyl, C7-10-aralkyl, or C6-10-aryl, and
• R9 is hydrogen, linear or branched C1-10-alkyl, C5-10-cycloalkyl, C7-10-aralkyl, C6-10-aryl, or NR10R11, wherein R10 and R11 are hydrogen, linear or branched C1-10-alkyl, C7-10-aralkyl, or C6-10-aryl.