Pigment preparations based on diketopyrrolopyrrole pigments for the undistorted pigmentation of partially crystalline plastics

1) A pigment preparation comprising

• a) at least one base pigment, wherein the at least one base pigment is at least one diketopyrrolopyrrole pigment of the formula (V)
• where
• R20, R21, R22 and R23 are independently hydrogen, halogen, C1-C4-alkyl, C, C4-alkoxy, cyano or phenyl;
• and
• b) at least one pigment dispersant of the formula (I),
• where
• R31 is a radical of the formula (VI), (VII) or (IX),
• R32 is a radical of the formula (VII),
• s or t is a number from 0.1 to 4.0
• n is a number from 0 to 2, with the proviso that n is 0 when R31 is a radical of the formula (VIII) or (IX),
• E+ is H+ or the equivalent Mm+/m of a metal cation Mm+ from the 1st to 5th main group or from the 1st, 2nd or 4th to 8th transition group of the periodic table of chemical elements, m being one of 1, 2 or 3;
• an ammonium ion N+R9R10R11R12, wherein R9, R10, R11 and R12 are each independently a hydrogen atom, C1-C30-alkyl, C2-C30-alkenyl, C5-C30-cycloalkyl, phenyl, (C1-C8)-alkylphenyl, (C1-C4)-alkylenephenyl, or a (poly)alkyleneoxy group of the formula —[CH(R80)—CH(R80)—O]k—H, where k is a number from 1 to 30 and each R80 is independently hydrogen, C1-C4-alkyl or, when k is >1, a combination thereof;
• and wherein the C1-C30-alkyl, C2-C30-alkenyl, C5-C30-cycloalkyl, phenyl or (C1-C8)-alkylphenyl are optionally substituted by amino, hydroxyl and/or carboxyl;
• or the substituents R9, R10 and R11 combine with the quaternary nitrogen atom to form a five-, six- or seven-membered saturated ring system optionally containing additional heteroatoms selected from the group consisting of O, S and N;
• or the substituents R9, R10 and R11 combine with the quaternary nitrogen atom to form a five-, six- or seven-membered aromatic ring system optionally containing additional heteroatoms selected from the group consisting of O, S and N and optionally, has additional rings fused thereon;
• or wherein E+ is an ammonium ion of the formula (Ic)
• wherein
• R15, R16, R17 and R18 are independently hydrogen or a (poly)alkyleneoxy group of the formula —[CH(R80)—CH(R80)O]k—H, where k is a number from 1 to 30 and each R80 is independently hydrogen, C1-C4-alkyl or, when k>1, a combination thereof;
• q is a number from 1 to 10;
• p is a number from 1 to 5, subject to the proviso that p≦q+1;
• T is a branched or unbranched C2-C6-alkylene radical;
• or when q is >1 T is optionally a combination of branched or unbranched C2-C6-alkylene radicals;
• Z1 and Z2 are the same or different and are hydrogen or C1-C30-alkyl linear or branched C1-C30-alkenyl linear or branched, wherein the C1-C30-alkyl and C1-C30-alkenyl are unsubstituted or halogen, hydroxyl, hydroxycarbonyl or C1-C6-alkoxy-substituted, wherein the C1-C30-alkenyl radical is optionally singly or multiply unsaturated, with the proviso that Z1 and Z2 are not both hydrogen;
• and
• Q is a radical of a diketopyrrolopyrrole compound of the formula (Ia)
• where R24, R25, R26 and R27 are independently hydrogen, halogen, (C1-C4)-alkyl, (C1-C4)-alkoxy or cyano.