Merck Patent Gmbh

Gerald Fuchs-Pohl

Stephanie Andes

Gerhard Pfaff

Matthias Kuntz

Reinhold Rueger

Reiner Vogt

Martin Friz

Michael Jungnitz

Michael Uhlig

Dieter Br&uuml;ckner

Siegfried Raabe

Gerhrad Pfaff

Effect pigments based on a flake-form substrate that have a circular or elliptical shape or have the shape of a polygon, the preparation thereof, and the use thereof, for example, in paints or coatings, or as tracers.

Effect pigments of uniform shape and size

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 &#x2266;1.8, and a colorless dielectric layer of a material with a refractive index n of &#x3e;1.8, and a selectively or non-selectively absorbent layer (B), and to a process for their production, and to their use.

Multilayered luster pigments

Multilayer pearl lustre pigment

Multilayer nacreous pigment

Multilayer pearl luster pigment based on an absorbing platelet-shaped substrate which is coated with alternating layers of a material of low refractive index and a material of high refractive index, or with a metal, the difference in the refractive indices being at least 0.1.

Multilayer pearl luster pigment based on an opaque substrate

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Weiterstadt, Germany

Gerald Fuchs-Pohl