Multilayered luster pigments
AssigneeMerck Patent GmbH
InventorsStephanie Andes, Gerald Fuchs-Pohl, Martin Friz, Gerhard Pfaff, Siegfried Raabe, Michael Uhlig
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Abstract
The invention relates to multilayered luster pigments based on metallic substrates, which are completely surrounded by a plurality of layers, where these layers comprise at least one layer pack (A) having a colorless dielectric layer of a material with a refractive index n of ≦1.8, and a colorless dielectric layer of a material with a refractive index n of >1.8, and a selectively or non-selectively absorbent layer (B), and to a process for their production, and to their use.
Claims28
A multilayered luster pigment comprising a metallic substrate opaque to light and reflective and a plurality of layers, each of said plurality of layers completely or essentially completely surrounding the substrate, comprising
- (A) at least one layer pack comprising
- i) a colorless dielectric layer of a material having a refractive index n of ≦1.8, and
- ii) a colorless dielectric layer of a material having a refractive index n of >1.8, and
- (B) an absorbent layer.
Dependencies are inferred from the claim text.