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

Claim 5:
6. The LC medium according to claim 1, further comprising one or more compounds of formula III, in which
R11 and R12 each, independently of one another, denote H, an alkyl or alkoxy radical having 1 to 15 C atoms, where one or more CH2 groups in these radicals may each be replaced, independently of one another, by, —C≡C—, —CF2O—, —OCF2—, —CH═CH—, by —O—, —CO—O—, or —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may each be replaced by halogen,
A3 on each occurrence, independently of one another, denotes
a) 1,4-cyclohexenylene or 1,4-cyclohexylene radical, in which one or two non-adjacent CH2 groups may each be replaced by —O— or —S—,
b) a 1,4-phenylene radical, in which one or two CH groups may each be replaced by N, or
c) a radical selected from the group consisting of spiro[3.3]heptane-2,6-diyl, 1,4-bicyclo[2.2.2]octylene, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl, phenanthrene-2,7-diyl and fluorene-2,7-diyl,

wherein the radicals a), b) and c) may be mono- or polysubstituted by halogen atoms,
n denotes 0, 1 or 2,
Z1 on each occurrence independently of one another denotes —CO—O—, —O—CO—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —CH2—, —CH2CH2—, —(CH2)4—, —CH═CH—CH2O—, —C2F4—, —CH2CF2—, —CF2CH2—, —CF═CF—, —CH═CF—, —CF═CH—, —CH═CH—, —C═C— or a single bond,
L11 and L12 each, independently of one another, denote F, Cl, CF3 or CHF2, and
W denotes O or S.