Abstract: A green pigment preparation that is characterized by a C.I. Pigment Yellow 214 and at least one copper phthalocyanine pigment C.I. Pigment Blue 15:3 and/or C.I. Pigment Blue 15:1 content, the ratio of C.I. Pigment Yellow 214 to the at least one copper phthalocyanine pigment being in the range from 1:20 to 20:1. The inventive pigment preparation are especially suitable for the low-warpage colouring of semicrystalline plastics with pure green tones.

Abstract: A method for the production of a diazo pigment, or a mixture of diazo pigments, according to formula (I) of the specification by azo coupling, wherein the azo coupling product is subjected to a finish in an organic solvent or in an agueous organic solvent with a neutral or alkaline pH.

Abstract: The invention relates to a green pigment preparation that is characterised by a C.I. Pigment Yellow 214 and a copper phthalocyanine pigment C.I. Pigment Blue 15:3 and/or C.I. Pigment Blue 15:1 content, the ratio of C.I. Pigment Yellow 214 to copper phthalocyanine pigment being between 1 to 20 and 20 to 1. The inventive pigment preparations are especially suitable for the low-warpage colouring of semicrystalline plastics with pure green tones.

Abstract: The invention relates to a method for the production of disazo pigments of general formula (I) or a mixture of said disazo pigments by means of azocoupling, wherein R1 and R2 are the same or different and represent hydrogen C1-C4-alkyl, C1-C4 alkoxy, C1-C5-alkoxycarbonyl, nitro, cyano, halogen, phenoxy or trifluoromethyl; D1 and D2 are the same or different and represent an aromatic heterocycle from the group of benzimidazole, benzimidazolone, benzimidazolthione, benzoxazole, benzoxazolone, benzothiazolone, indazole, phthalimide, naphthalimide, benzotriazole, chinoline, benzodiazines, phenmorpholine, phenmorpholinone, benzo[c,d]indolone, benzimidazo[1,2-a]pyrimidone, carbazole and indole. The invention is characterised in that the coupling product resulting from the azocoupling is subjected to a finish in an organic solvent with an alkaline pH value or in an aqueous organic solvent with a neutral or alkaline pH value.

Abstract: Organic pigments are conditioned by introducing a liquid prepigment suspension into a miniaturized continuous reactor and thermally treating therein.

Abstract: Organic pigments are conditioned by introducing a liquid prepigment suspension into a miniaturized continuous reactor and thermally treating therein.

Abstract: Organic pigments are conditioned by introducing a liquid prepigment suspension into a miniaturized continuous reactor and thermally treating therein.

Abstract: The invention relates to six new crystal polymorphs, &agr; (alpha), &bgr; (beta), &ggr; (gamma), &dgr; (delta), &zgr; (zeta), and &eegr; (eta), of the disazo colorant of the formula I, having characteristic reflections in the X-ray diffraction spectrum. The novel crystal polymorphs are prepared by treatment in organic solvents.

Abstract: The invention relates to six new crystal polymorphs, &agr; (alpha), &bgr; (beta), &ggr; (gamma), &dgr; (delta), &zgr; (zeta), and &eegr; (eta), of the disazo colorant of the formula I, 1

Abstract: Organic pigments are conditioned by introducing a liquid prepigment suspension into a miniaturized continuous reactor and thermally treating therein.