Patent ID: 8372307

Claim:
A compound according to formula I R 1 -A-(B) b —R 2 I wherein R 1 and R 2 are independently of each other selected from H, F, Cl, Br, I, CN, NCS, SF 5 , or straight-chain or branched alkyl having 1 to 30 C-atoms that is optionally mono- or polysubstituted 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, R 0 and R 00 independently of each other denote H or alkyl with 1 to 12 C-atoms, Y 1 and Y 2 independently of each other denote H or F, P is a polymerizable group, Sp is a Sp′-X′ or a single bond, Sp′ is alkylene with 1 to 20 C atoms, which is optionally mono- or polysubstituted by F, Cl, Br, I or CN, and wherein 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—, —NR 0 —CO—O—, —O—CO—NR 0 —, —NR 0 —CO—NR 0 —, —CH═CH — or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, X′ is —O—, —S—, —CO—, —COO—, —OCO—, —O—COO—,—CO—NR 0 —, —NR 0 —CO—, —NR 0 —CO—NR 0 —, —OCH 2 —, —CH 2 O—, —SCH 2 —, —CH 2 S—, —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 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, A and B are independently of each other 1,4-cyclohexylene wherein one or more —CH 2 — groups are optionally replaced by —O— and/or —S—, in such a way, that no two O-atoms are linked together and that is optionally substituted, and b is 0 or 1; wherein at least one of R 1 and R 2 is P-Sp′-X′ is not a single bond, and if only one of R 1 and R 2 is P-Sp′-X′— then X′ is not —O— or —CH 2 O— and Sp ′ is not an alkylene with 1 20 C atoms wherein only one CH 2 group is replaced and it is replaced by —O—; with the proviso that compounds wherein; b is 0, R 1 and R 2 are P-Sp, P is arcylate or methacrylate, and Sp is a single bond or a —CH 2 — group are excluded.