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

Claim 4:
5. The LC medium according to claim 4, wherein compounds of formula II are selected from compounds of formulae IIA, IIB, IIC and IID, in which
R2A and R2B each, independently of one another, denote H, an alkyl having 1 to 15 C atoms, or alkenyl radical having 2 to 15 C atoms which is unsubstituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, where, in addition, one or more CH2 groups in these radicals may each be replaced by —O—, —S—,, —C≡C—, —CF2O—, —OCF2—, —OC—O—, or —O—CO— in such a way that O atoms are not linked directly to one another,
L1 to L4 each, independently of one another, denote F, Cl, CF3 or CHF2,
Y denotes H, F, Cl, CF3, CHF2 or CH3,
Z2, Z2B, Z2D each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCH2O—,
p denotes 0, 1 or 2, and
q on each occurrence, identically or differently, denotes 0 or 1.