Pearlescent pigments based on fine and thin substrates
AssigneeEckart GmbH
InventorsMichael Gruener, Ulrich Schmidt, Günter Kaupp, Peter Krueger, Jens Depner, Katrin Steinbach, Ralph Schneider, Frank Henglein
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Abstract
Pearlescent pigments including a largely transparent platelet-shaped substrate having a density ρS and at least one optically active coating having a density ρM, the substrate having an average size d50 of 3 to 8 μm and an average height hS of 40 to 110 nm. The disclosure further relates to a method for producing the pearlescent pigments, and also to the use thereof.
Claims25
Pearlescent pigments, each pearlescent pigment in the pearlescent pigments comprising a largely transparent platelet-shaped substrate and at least one optically active coating,
- wherein the platelet-shaped substrates in the pearlescent pigments have a d50 of 3 to 8 μm and an average height hS of 40 to 110 nm, and wherein a standard deviation for the height hS of each said substrate is in a range of from 25% to 80%.
Dependencies are inferred from the claim text.