Multilayer cholesteric pigments
AssigneeBASF SE
InventorsPeter Schuhmacher, Norbert Schneider, Raimund Schmid, Wolfgang Best, Peter Blaschka, Frank Meyer
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Abstract
A platelet-shaped cholesteric multilayer pigment which comprises the layer sequence A/B/ and if desired C, where A and C independently of one another are at least one partly light-permeable absorption layer, and B is at least one cholesteric layer.
Claims22
A platelet-shaped cholesteric multilayer pigment which comprises the layer sequence A/B/ and if desired C,
- where
- A and C independently of one another are at least one partly light-permeable absorption layer, and
- B is at least one cholesteric layer;
- and
- the adhesive force between the cholesteric layer and the absorption layer is more than about 8 cN.
A platelet-shaped cholesteric multilayer pigment, which comprises at least one cholesteric layer B enveloped by an at least partly light-permeable absorption layer A, where A comprises at least one essentially inorganic absorption layer and where the individual thickness of each individual cholesteric layer of B is from 0.5 to 20 μm.
Dependencies are inferred from the claim text.