Norbert Dr. Mronga

TL;DR: Luster pigments obtainable by treating titania-coated silicate-based platelets at from 400° to 900° C. with a gas mixture comprising a vaporized organic compound and ammonia are useful for coloring paints, inks, including printing inks.

TL;DR: In this article, the preparation of bluish luster pigments was performed by treating titania-coated silicatic platelets with a reducing gas mixture, which consisted of treating a reduced titania coating with a geometric layer thickness of from 10 to 60 nm at from 800° to 900° C with a gas mixture comprising a vaporized organic compound and ammonia.

TL;DR: Lustre pigments based on coated, platelet-like (flaky), silicatic or metallic substrates wherein the coating comprises a metal sulphide are useful for colouring paints, printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations as discussed by the authors.

TL;DR: In this paper, a simple process for achieving very active passivation of metal pigments against hydroxyl-containing compounds is described, which consists of treating the metal pigsments with passivators in the gas phase.