US 11,667,840 B2Granted

Liquid-crystalline medium

AssigneeMerck Patent GmbH

InventorsAtsutaka Manabe, Christian Jasper, Volker Reiffenrath, Constanze Brocke, Detlef Pauluth, Dagmar Klass, Michael Wittek, Renate Seeger, Dmitry Ushakov, Beate Schneider

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Abstract

The present invention relates to liquid-crystalline media comprising one or more compounds of formula DFS in which the groups and parameters occurring have the meanings indicated in claim 1, to high-frequency components comprising same, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, in particular for microwave phased-array antennas. The present invention further relates to novel mesogenic compounds.

Claims8

Dependent claims

A compound of formula PVfU-n-S

wherein n is 3.

Dependencies are inferred from the claim text.

Facts

Application: 16/344,463Filed 23 Oct 2017
Priority: EP 1619526424 Oct 2016
Published: US 2019/0330530 A131 Oct 2019
Granted: 6 Jun 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

C09K 19/04
Liquid crystal materials: characterised by the chemical structure of the liquid crystal components , e.g. by a specific unit
C09K 19/322
Containing condensed ring systems, i.e. fused, bridged or spiro ring systems: compounds containing a naphthalene ring or a completely or partially…
C07C 331/28
Isothiocyanates: having isothiocyanate groups bound to carbon atoms of six-membered aromatic rings
C09K 19/16
Linked by a carbon chain: the chain containing carbon-to-carbon double bonds, e.g. stilbenes