Multilayer pigments based on glass flakes
AssigneeMerck Patent GmbH
InventorsKlaus Ambrosius, Ralf Anselmann, Sabine Schoen
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Abstract
The present invention relates to multilayer pigments based on glass flakes and to a method for the production of such pigments. The resulting pigment can be used in any application for which pearlescent pigments have been heretofore used such as, for example, in plastics, paints, inks, cosmetic formulations, coatings including solvent or waterborne automotive paint systems, powder coatings, inks and agriculture foils, for the laser-marking of papers and plastics.
Claims12
Multilayer pigments based on glass flakes characterized in that the glass flakes are coated with alternating layers with a high and a low refractive index and that the glass flakes are coated with at least three layers.
A method of preparing a multilayer pigment which comprises coating of the glass flakes by wet chemical coating, or by chemical or physical vapor deposition and calcining the coated glass flakes.
Dependencies are inferred from the claim text.