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US 6,139,614 AGranted
Goniochromatic luster pigments based on titanium dioxide-coated silicatic platelets which have been heated in a reducing atmosphere
AssigneeBASF SE
InventorsRaimund Schmid, Oliver Seeger, Norbert Mronga
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Abstract
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 comprising A) a colorless coating having a refractive index n.ltoreq.1.8 and B) a colorless coating having a refractive index n.gtoreq.2.0.
Claims9
Goniochromatic luster pigments based on titanium dioxide-coated silicatic platelets which have been heated in a reducing atmosphere and which comprise at least one layer packet comprising
- A) a colorless coating having a refractive index n.ltoreq.1.8 and
- B) a colorless coating having a refractive index n.gtoreq.2.0, adjacent to A.
Dependencies are inferred from the claim text.