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US 6,605,235 B1Granted
Cholesteric layered material having an improved color impression, and the production thereof
AssigneeBASF SE
InventorsFrank Meyer, Frank Prechtl, Norbert Schneider, Peter Heilmann, Volker Koch, Robert Parker, Volker Richter, Peter Schuhmacher
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Abstract
The invention relates to cholesteric layered material having an improved color impression, to pigments prepared therefrom, and to a process for the production and use thereof.
Claims30
A cholesteric layered material comprising at least one three-dimensionally crosslinked, aligned cholesteric layer, wherein the crosslinked cholesteric layer(s) has (have) a homogeneous interference line pattern substantially over the entire layer thickness, and
- wherein the interference line pattern exhibits no line inversion and/or no eye formation.
Dependencies are inferred from the claim text.