Abstract: A method of using electron diffraction to obtain PDFs from crystalline, nanocrystalline, and amorphous inorganic, organic, and organometallic compound.

Abstract: A method of using electron diffraction to obtain PDFs from crystalline, nanocrystalline, and amorphous inorganic, organic, and organometallic compound.

Abstract: Novel crystalline modifications (eta, theta, iota, kappa) of the C.I. Pigment Yellow 181, obtained when one of the known phases or another inventive phase of said pigment is treated with specific solvents. The novel crystalline phases are characterized by yellow shades and excellent coloring properties.

Abstract: The invention relates to the use of a pigment composition containing between 86.0 and 99.9 total mol % of C.I. Pigment Yellow 74 molecules and between 14.0 and 0.1 total mol % of at least one monoazo pigment of the formula (1) wherein R1 represents Cl, OCH3, OH3 or NO2 as a coloring agent for pigmenting ink-jet inks and color filters.

Abstract: A mixed crystal of two or more different benzimidazolonedioxazine compounds of the formula (1) where X and X′ are identical or different and are hydrogen or halogen, R1, R1′, R2 and R2′ are identical or different and are hydrogen, C1-C18 alkyl, trifluoromethyl, C1-C18 alkylcarbonyl, C5-C6 cycloalkyl or phenyl which may be unsubstituted or substituted by one or more halogen atoms, nitro groups, trifluoromethyl, C1-C18 alkyl, C1-C18 alkoxy, C1-C18 alkylcarbonyl and/or C1-C18 alkoxycarbonyl groups. The mixed crystals are of low solubility and feature good fastness properties and red to blue colorations. The mixed crystals are suitable for pigmenting paints, plastics, printing inks, aqueous or solvent-based pigment preparations, electrophotographic toners and developers, powder coating materials, inks, preferably inkjet inks, color filters, and for coloring seed and cosmetics.

Abstract: Process for phase conversion of a methyl-substituted, benzimidazolone-fused dioxazine pigment of composition C22H12Cl2N6O4 having the formula (1) or of an isomer or tautomer thereof, which comprises treating the pigment of formula (1) with certain organic solvents. In the course of this phase conversion, 4 novel crystal polymorphs are formed which are called phases II, IV, V and VI and are characterized by means of their X-ray powder diagrams. The novel polymorphs are of low solubility and feature good fastness properties and violet colorations. The novel crystal polymorphs are suitable for pigmenting coating materials, plastics, printing inks, aqueous or solvent-based pigment preparations, electrophotographic toners and developers, powder coating materials, inks, preferably inkjet inks, and color filters, and for coloring seed.

Abstract: C.I. Pigment Yellow 191 is obtained in new crystal polymorphs (beta, gamma, delta and epsilon phases) if the known alpha phase or another inventive phase of this pigment is treated with certain solvents and reprecipitated.

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: Process for phase conversion of a methyl-substituted, benzimidazolone-fused dioxazine pigment of composition C22H12Cl2N6O4 having the formula (1) 1

Abstract: A mixed crystal of two or more different benzimidazolonedioxazine compounds of the formula (1) 1

Abstract: C.I. Pigment Yellow 191 is obtained in new crystal polymorphs (beta, gamma, delta and epsilon phases) if the known alpha phase or another inventive phase of this pigment is treated with certain solvents and reprecipitated.

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: The invention provides a process for aftertreating organic pigments by causing the ground or unground crude organic pigment and liquid or supercritical carbon dioxide to act on one another.

Abstract: The invention provides a process for aftertreating organic pigments by causing the ground or unground crude organic pigment and liquid or supercritical carbon dioxide to act on one another.

Abstract: C.I. Pigment Red 53:2 is obtained in new crystal modifications (epsilon, zeta, eta, theta, iota, kappa, lambda, nu, xi, omicron, pi and rho phases) by heating any other phase of this pigment in certain organic solvents and reprecipitating the pigment. The new crystal phases differ from one another in rheology and coloristics.