Clariant Corporation

Clariant Finance (bvi) Limited

Clariant Produkte (deutschland) Gmbh

Columbia University

Martin Ulrich Schmidt

Hans Joachim Metz

Peter Kempter

Ruediger Jung

Arpad Acs

R&uuml;diger Jung

Roland Born

Bansi Lal Kaul

Mercouri G Kanatzidis

Joachim Weber

Leonhard Unverdorben

Josef Geisenberger

Bruno Piastra

Carsten Plueg

Felix Wendelin Grimm

Rudolf Steiner

Andreas Wacker

Klaus Kund

Olaf Schupp

Karl-Heinz Schweikart

Bernd Nestler

Till Borchert

Simon Billinge

Hans-Joachim Metz

Franz Schui

David Blum

Gerald Mehltretter

Christopher Farrow

Valérie Wolf

Tatiana E Gorelik

Frank Prokschy

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

Method of collecting and processing electron diffraction data

The invention relates to a pigment composition based on P.Y. 191 of the formula (1) containing 0.05 to 30 mol %, based on the sum of P.Y. 191 and a further yellow colorant, of at least one further yellow colorant of the formula (2) and/or of C.I. Pigment Yellow 100 in which R1, R2, R3 and R4 are each independently hydrogen, halogen, &#x2014;CH, &#x2014;NO, or NH&#x2014;R6 where R6 is C-C-alkyl; R5 is methyl or carboxyl, and where the compound of the formula (2) is not C.I. Pigment Yellow 191.

Pigment composition based on C.I. pigment yellow 191

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.

Crystalline modifications of C.I. pigment yellow 181 and associated production method

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 Rrepresents Cl, OCH, OHor NOas a coloring agent for pigmenting ink-jet inks and color filters.

Use of a pigment composition comprising mixed crystals based on CI pigment yellow 74

The epindolidione compounds of the general formula (I) in which A', Rand A have the meanings given in claimare outstanding pigments which are notable in particular for better migration, light and solvent fastnesses, better heat stability and enhanced colouring power and also better dispersibility and capability to be brought into pigment form. The invention also relates to a process for preparing these epindolidione compounds and to their use a colorants for colouring polymer compositions or paper pulps, as colorants in electrophotographic toners and developers, as colorants in ink-jet inks, as colorants in the coatings industry, as colorants for textile printing or as a printing ink in the graphical industry, as colorants in cosmetics.

Epindolidione pigments

Mixed crystals of benzimidazolonedioxazine compounds

Process for preparing new crystal polymorphs of a methyl-substituted benzimidazolone-dioxazine pigment

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.

Crystal polymorphs of C.I. Pigment Yellow 191 and their preparation

Crystal polymorphs of a yellow disazo colorant, and their preparation

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.

Finishing treatment of pigments in liquid or supercritical CO2

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.

Process for preparing new crystal modifications of C.I. pigment red 53:2

The invention relates to a novel crystal modification (&ggr;-modification ) of C.I. Pigment Red 53:2 of the formula (1)

Crystal modification of C.I. Pigment Red 53:2 (&ggr;-phase)

The invention relates to a novel crystal modification (.delta.-modification) of C.I. Pigment Red 53:2 of the formula (1) ##STR1## having the following characteristic reflections in the X-ray powder diffraction pattern:

Crystal modification of C.I. Pigment Red 53:2 (.delta.-phase)

Growing community of inventors

Frankfurt am Main, Germany

Martin Ulrich Schmidt