Patent ID: 7294369

Claim:
A compound of formula I wherein A 1 and A 2 are, each independently, an aliphatic or aromatic carbocyclic or heterocyclic group with up to 20 C atoms that may comprise fused rings and may be unsubstituted, mono- or polysubstituted with L, m1 is 0, 1, 2 or 3, m2 is 1, 2, 3 or 4, Z 1 to Z 2 are, independently of each other, —O—, —S—, —CO—, —COO—, —OCO—, —S—CO—, —CO—S—, —O—COO—, —CO—NR 0 —, —NR 0 —CO—, —OCH 2 —, —CH 2 O—, —SCH 2 —, —CH 2 S—, —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —CH 2 CH 2 —, —CF 2 CH 2 —, —CH 2 CF 2 —, —CF 2 CF 2 —, —CH═N—, —N═CH—, —N═N—, —CH═CR 0 —, —CY 1 ═CY 2 —, —C≡C—, —CH═CH—COO—, —OCO—CH═CH— or a single bond, Y 1 and Y 2 are, independently of each other, H, F, Cl or CN, R 0 and R 00 are, independently of each other, H or alkyl with 1 to 12 C-atoms, R 1 and R 2 are, independently of each other, H, F, Cl, Br, I, CN, NO 2 , NCS, SF 5 or a straight chain or branched alkyl having 1 to 30 C-atoms that is unsubstituted, mono- or poly-substituted by F, Cl, Br, I or CN, and in which one or more non-adjacent CH 2 groups are optionally replaced, in each case independently from one another, by —O—, —S—, —NH—, —NR 0 —, —SiR 0 R 00 —, —CO—, —COO—, —OCO—, —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, or denote P-Sp, wherein at least one of R 1 and R 2 is P-Sp, P is a polymerizable group, Sp is a spacer group or a single bond, L has, in case of multiple occurrence independently of one another, one of the meanings of R 1 different from H, and r is 1, 2, 3 or 4.