Patent ID: 8333906

Claim:
A mesogenic system comprising a) a polymeric component, component A, obtained or obtainable from polymerisation of a precursor comprising one or more mesogenic mono-reactive compounds, one or more di-reactive compounds, which optionally are also mesogenic compounds and optionally a photo-initiator and b) a low molecular weight component, component B, comprising one or more mesogenic compounds of formula Z and/or N wherein R z and R are each independently H, F, CI, Br, I, CN, NO 2 , NCS, SF 5 , SO 2 CF 3 or alkyl which is straight chain or branched, preferably has 1 to 20 C-atoms, is unsubstituted, mono- or poly-substituted by F, CI, Br, I or CN, and in which one or more non-adjacent CH z groups are optionally replaced, in each case independently from one another, by —O—, —S—, —NH—, —NR 01 —, —SiR 01 R 02 —, —CO—, —COO—, —OCO—O—, —S—CO—, —CO—S—, —CY 1 ═CY 2 — or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, X Z is F, Cl, CN, NCS, OCF 3 , CF 3 or SF 5 , R 01 and R 02 are, independently of each other, H or alkyl with 1 to 12 C-atoms, Y 01 and Y 02 are, independently of each other, F,Cl or CN, and alternatively one of them may be H, and n is 0 or 1, and one or more chiral dopants, said system exhibiting a Blue Phase.