Goniochromatic luster pigments which are based on titanium dioxide-coated siliceous platelets heated in a reductive atmosphere

摘要

Goniochromatic luster pigments are based on titanium dioxide-coated silicatic platelets which have been heated in a reducing atmosphere and which comprise at least one layer packet comprisingA) a colorless coating having a refractive index n<=1.8 andB) a coating which has a refractive index n>=2.0, which includes iron(III) oxide and which selectively absorbs visible light.