Goniochromatic luster pigments with silicon-containing coating
AssigneeBASF SE
InventorsRaimund Schmid, Norbert Mronga, Jorg Adel
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Abstract
Goniochromatic luster pigments based on multiply coated platelet-shaped metallic substrates comprising at least one layer packet of A) a layer consisting essentially of silicon oxide, silicon oxide hydrate, aluminum oxide and/or aluminum oxide hydrate, and B) a nonselectively absorbing, silicon-containing layer which is at least partially transparent to visible light, and also, if desired, additionally C) an outer layer which consists essentially of colorless or selectively absorbing metal oxide, are useful for coloring paints, inks, including printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.
Claims10
Goniochromatic luster pigments based on multiple coated platelet-shaped metallic substrates having a multiple coating comprising at least one layer packet of
- A) a layer consisting essentially of silicon oxide, silicon oxide hydrate, aluminum oxide and/or aluminum oxide hydrate, and
- B) a nonselectively absorbing, silicon-containing layer which is at least partially transparent to visible light,
- and optionally
- C) an outer layer which consists essentially of colorless or selectively absorbing metal oxide.
Dependencies are inferred from the claim text.