Patent ID: 8557142

Claim:
Compounds of the formula I in which L 1 to L 3 , independently of one another, denote F, Cl, C 1 - to C 10 -alkyl or a meaning in accordance with R x , where one or more of the radicals L 1 to L 3 denote an R x , n, o, p, independently of one another, denote 0, 1, 2, 3 or 4, R x denotes cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl, R 1 and R 2 , independently of one another, denote H, a halogenated or unsubstituted alkyl radical having 1 to 15 C atoms, where, in addition, one or more CH 2 groups in these radicals may each be replaced, independently of one another, by —C≡C—, —CH═CH—, —CF═CF—, —(CO)O—, —O(CO)—, —(CO)— or —O— in such a way that O atoms are not linked directly to one another, F, Cl, Br, CN, CF 3 , OCF 3 , SCN, NCS or SF 5 , A 1 denotes a) trans-1,4-cyclohexylene or cyclohexenylene, in which, in addition, one or two non-adjacent CH 2 groups may be replaced by —O— and/or —S— and in which H may be replaced by F, b) 1,4-phenylene, in which one or two CH groups may be replaced by N and in which, in addition, one or more H atoms may be replaced by Br, Cl, F, CN, R x , C 1 -C 10 alkyl, C 1 -C 10 alkoxy or a mono-or polyfluorinated C 1 -C 10 alkyl or alkoxy group, or c) a radical from the group 1,4-bicyclo[2.2.2]octylene, cyclobut-1,3-diyl, spiro[3.3]heptane-2,6-diyl, thiophene-2,5-diyl, in which one or more CH groups may be replaced by N, one or more H atoms may be replaced by Br, Cl, F, CN, R x , C 1 -C 10 alkyl, C 1 -C 10 alkoxy or a mono- or polyfluorinated C 1 -C 10 alkyl or alkoxy group, and one or more double bonds may be replaced by single bonds, Z 1 denotes a single bond, —C≡C—, —CH═CH—, —CH 2 O—, —(CO)O—, —CF 2 O—, —CF 2 CF 2 —, —CH 2 CF 2 —, —CH 2 CH 2 —, —(CH 2 ) 4 —, —CH═CF— or —CF═CF—, where asymmetrical bridges may be oriented to both sides, and m denotes 0, 1 or 2.