Patent ID: 11905448
Assignee: MERCK PATENT GMBH
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 3:
4. The LC medium according to claim 1, further comprising one or more compounds of formula II, wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
R1 and R2 straight chain alkyl having 1 to 25 C atoms, branched alkyl having 3 to 25 C atoms, or cyclic alkyl having 3 to 25 C atoms, wherein one or more non-adjacent CH2-groups are optionally replaced by —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O—, CR0═CR00—, —C≡C—,, in such a manner that O- and/or S-atoms are not directly connected with each other, and wherein one or more H atoms are each optionally replaced by F or Cl,
R0, R00 H or alkyl having 1 to 12 C atoms,
A1 and A2 a group selected from the following formulae, Z1 and Z2 —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —CO—O—, —O—CO—, —C2F4—, —CF═CF—, —CH═CH—CH2O— or a single bond,
L1, L2, L3 and L4 F, Cl, OCF3, CF3, CH3, CH2F or CHF2,
Y H, F, Cl, CF3, CHF2 or CH3,
LC CH3 or OCH3,
a1 1 or 2,
a2 0 or 1.