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US 6,533,857 B1Granted
Gloss pigments comprising an absorbent low-refractive coating
AssigneeBASF SE
InventorsRaimund Schmid, Arno Böhm, Oliver Seeger, Norbert Mronga, Thorsten Clemens
Life of this patent
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Abstract
Luster pigments based on multiply coated reflecting platelet-shaped substrates and comprising at least one layer packet comprising A) a low refractive coating which selectively absorbs visible light and B) a reflective coating which is at least partially transparent to visible light and also, if desired, C) an outer protective layer.
Claims9
Luster pigments based on multiply coated reflecting platelet-shaped substrates and comprising at least one layer packet comprising
- A) a low refractive coating which selectively absorbs visible light and has a refractive index n≦1.8 and
- B) a reflective coating which is at least partially transparent to visible light and also, if desired,
- C) an outer protective layer.
Dependencies are inferred from the claim text.