NOVEL PIGMENT AND USE THEREOF

Pigments of the formula I (I) where A is a five- or six-membered aromatic fused or unfused heterocycle which contains one to three hetero atoms from the series consisting of nitrogen and/or oxygen and/or sulfur and which is bonded to the methylene group via a carbon atom, R1 and R2 are each hydrogen, alkyl C1-C4, alkylene C2 or aryl, and together R1 and R2 may also be an aliphatic or aromatic ring, R3 is hydrogen, alkyl C1-C4+L, hydroxylkyl C1-C3 or alkylene C2, P is the radical of a polycyclic pigment or a radical of a mix-crystal of polycyclic pigments, and n is a number from 0.0001 to 0.2, are useful for pigmenting high molecular weight materials in the form of plastic materials, melts, spinning solutions, surface coatings, paints, printing inks, baking finishes of the class of the alkyd melamine resin or acrylic melamine resin finishes, two-component coatings based on polyisocyanate-crosslinkable acrylic resins and printing inks based on nitrocellulose.