Clariant Finance (bvi) Limited

Clariant Produkte (deutschland) Gmbh

Willi Rauschmann

Felix Wendelin Grimm

Klaus Kund

Bernd Nestler

Wolfgang Winter

Thomas Hundsdorf

The invention relates to a method for conditioning and purifying pigment orange 74. The method is characterized in that the aqueous suspension of the raw pigment, optionally after adding an organic solvent from the group comprising isobutanol, chlorobenzene and o-dichlorobenzene, is subjected to a finishing treatment, the organic solvent is optionally removed using a distillation process, the remaining aqueous pigment suspension is mixed with a non-ionic surfactant and is heated to a temperature ranging from 30 to 100&#xb0; C. and the pigment is then filtered off.

Method for the production of pure C.I. pigment orange 74

The invention relates to a powdery dye composition consisting essentially of C.I. Pigment Red 170 (C.I. No. 12475) and barium sulfate, wherein the barium sulfate is added before or during the production process of the C.I. Pigment Red 170. The inventive addition of barium sulfate enables non-homogeneities and caking to be avoided in the mixture.

Dye composition for dyeing powder coatings

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Frankfurt am Main, Germany

Willi Rauschmann