Patent ID: 6933022

Claim:
A liquid-crystalline comprising one or more compounds of formula I one or more compounds of the formula II in which R 1 is H or alkyl having from 1 to 5 carbon atoms, R 2 is alkoxy having from 1 to 12 carbon atoms, R 3 is alkenyl having from 2 to 7 carbon atoms, R 4 is alkyl having from 1 to 12 carbon atoms, in which, in adddition, one or two non-adjacent CH 2 groups may be repalced by —O—,—CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, and c is 0 or 1, and one or more compounds selected from the following formulae: in which R 5 and R 6 are each independently alkyl having from 1 to 12 carbon atoms, in which, in addition, one or two non-adjacent CH 2 groups may each be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO—, alkyl is C 1-6 -alkyl, L is H or F, X is F or Cl, and d is 0 or 1.