US 9,523,037 B2 · Liquid-crystalline media, components for high-frequency technology, and mesogenic compounds

Abstract

The present invention relates to a liquid-crystal medium which comprises a component A which consists of one or more compounds of the formula I in which the parameters have the respective meanings given in the claims or in the text, and to the corresponding, novel mesogenic compounds and to the preparation thereof. The present invention likewise relates to the use of these liquid-crystal media, in particular in components for high-frequency technology, and to components of this type which contain media according to the invention, and to the production and use of these components. The components according to the invention are suitable, in particular, as phase shifters in the microwave and millimeter wave region, for microwave and millimeter wave array antennae and very particularly for so-called tuneable “reflectarrays”.

Claims20

Dependent claims

A liquid-crystal medium which comprises a component A which comprises one or more compounds of the formula I-1 or I-2,

in which
L1 denotes alkyl having 1 to 6 C atoms, cycloalkyl having 3 to 6 C atoms or cycloalkenyl having 4 to 6 C atoms,
X1 denotes alkyl having 1 to 3 C atoms or halogen, and
R11 and R12, independently of one another, denote unfluorinated alkyl having 1 to 15 C atoms, unfluorinated alkenyl having 2 to 15 C atoms, or cycloalkyl, alkylcycloalkyl, cycloalkenyl, alkylcycloalkenyl, alkylcycloalkylalkyl or alkylcycloalkenylalkyl, each having up to 15 C atoms.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

14/850,057Filed 10 Sep 2015 · division

Priority

DE 10 2011 009 19021 Jan 2011

Published

US 2016/0002533 A17 Jan 2016

Granted

20 Dec 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

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…
C09K 19/10
Containing at least two non-condensed rings: containing at least two benzene rings
C09K 19/18
Linked by a carbon chain: the chain containing carbon-to-carbon triple bonds, e.g. tolans
C09K 19/30
Containing at least two non-condensed rings: containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings

Family

PCT/EP2011/006511Parent of this division · filed 22 Dec 2011

US 2016/0002533 A1Pre-grant publication · published 7 Jan 2016

Application13/980,058Parent of this division

US 2013/0292608 A1Published application

US 9,752,077 B2Related patent

US 9,523,037 B2This patent

From the US filing history. Foreign family members aren’t listed.

Liquid-crystalline media, components for high-frequency technology, and mesogenic compounds

Life of this patent

Liquid-crystalline media, components for high-frequency technology, and mesogenic compounds

Life of this patent

Abstract

Claims20