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AssigneeSicpa Holding SA
InventorsSabine MAYADE, Tristan JAUZEIN
Estimating the term…
Disclosed is a substrate which has thereon a marking or layer comprising a cured chiral liquid crystal precursor composition which does not contain any salt that would change the position of a selective reflection band exhibited by the cured composition. A modifying resin made from one or more polymerizable monomers comprising an average of at least one ether functionali typer polymerizable group is disposed between the substrate and the marking or layer and in contact with the marking or layer in one or more areas thereof. The modifying resin changes the position of a selective reflection band exhibited by the cured chiral liquid crystal precursor composition on the substrate in the one or more areas.
A substrate having thereon a marking or layer comprising a cured chiral liquid crystal precursor composition, wherein a modifying resin made from one or more polymerizable monomers comprising an average of at least one ether functionality (—C—O—C—) per polymerizable group is disposed between the substrate and the marking or layer and in contact with the marking or layer in one or more areas thereof, the modifying resin changing a position of a selective reflection band exhibited by the cured chiral liquid crystal precursor composition on the substrate in the one or more areas, provided that salt that would cause a change of the position of the selective reflection band exhibited by the cured chiral liquid crystal precursor composition is not present in the composition.
A method of providing a marking on a substrate, wherein the method comprises:
A method of changing a position of a selective reflection band exhibited by a cured chiral liquid crystal precursor composition comprising one or more nematic compounds and one or more chiral dopant compounds which are capable of giving rise to a cholesteric state of the cured composition and not comprising salt that would cause a change of a position of the selective reflection band of the cured chiral liquid crystal precursor composition, wherein the method comprises contacting the composition with a modifying resin which is made from one or more polymerizable monomers comprising an average of at least one ether functionality (—C—O—C—) per polymerizable group and is capable of changing a position of a selective reflection band exhibited by the cured chiral liquid crystal precursor composition.
Dependencies are inferred from the claim text.