Pigments whose color depends on the viewing angle, their preparation and use
AssigneeConsortium fur Elektrochemische Industrie GmbH
InventorsChristoph Muller-Rees, Robert Maurer, Jurgen Stohrer, Franz-Heinrich Kreuzer, Silvia Jung, Franz Csellich
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Abstract
The invention relates to pigments whose color depends on the viewing angle, their preparation and use. These pigments comprise oriented three-dimensionally crosslinked substances of liquid-crystalline structure having a chiral phase and, if desired, further dyes and pigments, the further dyes and pigments if present not serving as base for the oriented three-dimensionally crosslinked liquid-crystalline substances having a chiral phase.
Claims11
A pigment whose color depends on the viewing angle, which comprises oriented three-dimensionally crosslinked support-free substances of liquid-crystalline structure having a chiral phase and, optionally dyes and pigments, wherein said optional dyes and pigments do not serve as a base for the oriented three-dimensionally crosslinked liquid-crystalline substances having a chiral phase.
Dependencies are inferred from the claim text.