Liquid crystal medium and high frequency components comprising same

Patent metadata

Field	Value
Publication number	US-9605204-B2
Application number	US-201214367254-A
Country	US
Kind code	B2
Filing date	Dec 10, 2012
Priority date	Dec 21, 2011
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

The present invention relates to liquid crystal media and to high frequency components comprising same, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves.

First claim

The invention claimed is:

1. A liquid crystal medium, comprising
10% to 85% by weight, based on the medium, of a first component, component A, consisting of one, two, three or more compounds of formula I

wherein
L 1 is R 12 or X 1 ,
R 11 is C n H 2n+1 , O—C n H 2n+1 or CH 2 ═CH—(CH 2 ) Z ,
R 12 is C m H 2m+1 or O—C m H 2m+1 or (CH 2 ) Z —CH═CH 2 ,
X 1 is F or Cl,
Y 11 and Y 12 are independently of one another H or F,
n and m independently of one another, denote an integer in the range from 1 to 9 and
z denotes 0, 1, 2, 3 or 4,
and
a second component, component B, consisting of one, two, three or more compounds of formulae III, IV, V or VI

wherein
L 31 denotes R 31 ,
L 32 denotes R 32 ,
R 31 and R 32 , independently of one another, denote H, non-fluorinated alkyl or alkoxy having 1 to 15 or non-fluorinated alkenyl, alkenyloxy or alkoxyalkyl having 2 to 15 C atoms,
Z 31 to Z 33 , independently of one another, denote trans-CH═CH—, trans-CH═CF—, trans-CF═CH—, trans-CF═CF— or a single bond,

denotes

denote independently of one another

with one of

being

alternatively may denote

and
R 33 to R 35 , independently of one another, denote non-fluorinated alkyl or alkoxy having 1 to 15 or non-fluorinated alkenyl, alkenyloxy or alkoxyalkyl having 2 to 15 C atoms,

wherein
R 41 to R 43 , independently of one another, denote non-fluorinated alkyl or non-fluorinated alkoxy, each having 1 to 15 C atoms, non-fluorinated alkenyl, non-fluorinated alkenyloxy or non-fluorinated alkoxyalkyl, each having 2 to 15 C atoms, or cycloalkyl, alkylcycloalkyl, cycloalkenyl, alkylcycloalkenyl, alkylcycloalkylalkyl or alkylcycloalkenylalkyl, each having up to 15 C atoms and
L 4 denotes F, or non-fluorinated alkyl or non-fluorinated alkoxy, each having 1 to 15 C atoms, non-fluorinated alkenyl, non-fluorinated alkenyloxy or non-fluorinated alkoxyalkyl, each having 2 to 15 C atoms,

wherein
R 51 and R 52 , independently of one another, denote halogen, non-fluorinated alkyl or fluorinated alkyl or non-fluorinated alkoxy or fluorinated alkoxy, each having 1 to 15 C atoms, or non-fluorinated alkenyl or fluorinated alkenyl, non-fluorinated alkenyloxy or non-fluorinated alkoxyalkyl or fluorinated alkoxyalkyl, each having 2 to 15 C atoms, in which, in addition, one or more “—CH 2 —” groups may be replaced, independently of one another, by cycloalkyl having 3 to 6 C atoms, and alternatively, in addition, one of R 51 and R 52 or both R 51 and R 52 denote H,
L 51 to L 54 on each appearance, in each case independently of one another, denote H, alkyl having 1 to 15 C atoms, F or Cl, and
i denotes an integer in the range from 5 to 15, and

wherein
R 61 and R 62 , independently of one another, denote halogen, non-fluorinated alkyl or fluorinated alkyl or non-fluorinated alkoxy or fluorinated alkoxy, each having 1 to 15 C atoms, or non-fluorinated alkenyl or fluorinated alkenyl, non-fluorinated alkenyloxy or non-fluorinated alkoxyalkyl or fluorinated alkoxyalkyl, each having 2 to 15 C atoms, in which, in addition, one or more “—CH 2 —” groups may be replaced, independently of one another, by cycloalkyl having 3 to 6 C atoms,
R 63 and R 64 , independently of one another, denote alkyl having 1 to 15 C atoms, and, alternatively, one of them also denotes H,
Z 6 denotes —C≡C— or a single bond.

2. The liquid crystal medium according to claim 1 , comprising the compounds of formula I in a total concentration in the range of 40% or more to 85% or less.

3. The liquid crystal medium according to claim 1 , comprising one or more compounds of formula II

wherein
L 21 denotes R 21 or X 21 ,
L 22 denotes R 22 or X 22 ,
R 21 and R 22 , independently of one another, denote H, non-fluorinated alkyl or non-fluorinated alkoxy having 1 to 17 C atoms or non-fluorinated alkenyl, non-fluorinated alkenyloxy or non-fluorinated alkoxyalkyl having 2 to 15 C atoms,
X 21 and X 22 , independently of one another, denote H, F, Cl, —CN, —NCS, —SF 5 , fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms or fluorinated alkenyl, non-fluorinated or fluorinated alkenyloxy or non-fluorinated or fluorinated alkoxyalkyl having 2 to 7 C atoms,

independently of one another, denote

4. The liquid crystal medium according to claim 3 , consisting of compounds of formula I and compounds of formulae II to VI.

5. The liquid crystal medium according to claim 3 , additionally comprising one or more compounds of formulae II-1a-1 to II-1a-4

wherein

R 21 has the meaning given for R 11 .

6. The liquid crystal medium according to claim 1 , additionally comprising one or more compounds of formula III.

7. The liquid crystal medium according to claim 1 , comprising one or more compounds of the formula IV.

8. The liquid crystal medium according to claim 1 , comprising one or more compounds of formula V.

9. The liquid crystal medium according to claim 1 , comprising one or more compounds of formula VI.

10. A component for high-frequency technology, comprising a liquid crystal medium according to claim 1 .

11. The component according to claim 10 , that is suitable for operation in the microwave range.

12. The component according to claim 10 , that is a phase shifter.

13. A microwave device, comprising one or more components according to claim 10 .

Assignees

• Merck Patent Gmbh

Inventors

• Manabe Atsutaka
• Jasper Christian
• Reiffenrath Volker
• Brocke Constanze
• Pauluth Detlef
• Klass Dagmar

Classifications

• C09K2019/188

  Ph-C≡C-Ph-C≡C-Ph · CPC title

• C09K2219/11

  used in the High Frequency technical field · CPC title

• C09K19/18 Primary

  the chain containing carbon-to-carbon triple bonds, e.g. tolans · CPC title

• C09K2019/181

  Ph-C≡C-Ph · CPC title

• C09K2019/183

  Ph-Ph-C≡C-Ph · CPC title