Goniochromatic luster pigments based on transparent, nonmetallic, platelet-shaped substrates
OwnerRaimund Schmid, Norbert Mrongainventors
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Abstract
Goniochromatic luster pigments based on multiply coated, high refractive, nonmetallic, platelet-shaped substrates which are at least partially transparent to visible light, comprising at least one layer packet of A) a colorless coating having a refractive index n.ltoreq.1.8 and B) a reflecting, selectively or nonselectively absorbing coating which is at least partially transparent to visible light, and also, if desired, additionally C) an outer protective layer, and their use for coloring paints, inks, including printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.
Claims26
A goniochromatic luster pigment comprising:
- a multiply coated, nonmetallic, platelet-shaped substrate having a refractive index n.gtoreq.2, and being at least partially transparent to visible light, the substrate being coated by at least one layer packet comprising:
- A) a colorless coating having a refractive index n.ltoreq.1.8, and
- B) a reflective, selectively or non-selectively absorbing coating which is at least partially transparent to visible light.
Dependencies are inferred from the claim text.