Patent ID: 11905450
Assignee: MERCK PATENT GMBH
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 10:
11. The liquid crystal mixture according to claim 9, further comprising one or more compounds of formula P

Pa-(Spa)s1-A2-(Z1-A1)n2-(Spb)s2-Pb  P

wherein
Pa, Pb each, independently of one another, denote a polymerisable group,
Spa, Spb on each occurrence, identically or differently, denote a spacer group,
s1, s2 each, independently of one another, denote 0 or 1,
A1, A2 each, independently of one another, denote a radical selected from the following:
a) a radical selected from the group consisting of trans-1,4-cyclohexylene, 1,4-cyclo-hexenylene and 4,4′-bicyclohexylene, wherein one or more non-adjacent CH2 groups may be replaced by —O— and/or —S— and wherein one or more H atoms may be replaced by F, or
b) a radical selected from the group consisting of 1,4-phenylene and 1,3-phenylene, wherein one or two CH groups may be replaced by N and wherein one or more H atoms may be replaced by L, or
c) a radical selected from the group consisting of tetrahydropyran-2,5-diyl, 1,3-diox-ane-2,5-diyl, tetrahydrofuran-2,5-diyl, cyclobutane-1,3-diyl, piperidine-1,4-diyl, thiophene-2,5-diyl and selenophene-2,5-diyl, each of which may be mono- or polysubstituted by L, or
d) a saturated, partially unsaturated or fully unsaturated, and optionally substituted, polycyclic radical having 5 to 20 cyclic C atoms, one or more of which may be replaced by heteroatoms, that is selected from:, and

wherein one or more H atoms in these radicals may be replaced by L, and/or one or more double bonds may be replaced by single bonds, and/or one or more CH groups may be replaced by N,

n2 is 0, 1, 2 or 3,
Z1 in each case, independently of one another, denotes —CO—O—, —O—CO—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, or —(CH2)n—, where n is 2, 3 or 4, —O—, —CO—, —C(R0R00)—, —CH2CF2—, —CF2CF2— or a single bond,
L on each occurrence, identically or differently, denotes F, Cl, CN, SCN, SF5 or straight-chain or branched, in each case optionally fluorinated, alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkyl-carbonyloxy or alkoxycarbonyloxy having up to 12 C atoms,
R0, R00 each, independently of one another, denote H, F or straight-chain or branched alkyl having 1 to 12 C atoms, wherein one or more H atoms may be replaced by F,
M denotes —O—, —S—, —CH2—, —CHY1— or —CY1Y2—, and
Y1 and Y2 each, independently of one another, have one of the meanings indicated for R0 or denote Cl or CN.