| abstract |
The invention relates to a circular UV polariser based on a polymerised mesogen being obtainable by curing by actinic radiation or by heat of a polymerisable composition which comprises the following components: a) a liquid mesogenic component A composed of one or more achiral mesogenic compounds having at least one polymerisable end group optionally linked via a spacer group to the mesogenic core, b) a component B composed of one or more chiral compounds in such an amount that the maximum wavelength of reflection (* small Greek lambda *max ) of the composition is between 320 and 440 nm, and c) a photoinitiator or thermal initiator component C. |