US4617140A
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US
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Bicyclohexyl derivatives
Assignee: Merck Patent GmbH
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Filing: 1985-07-29
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Granted: 1986-10-14
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Expires: 2005-07-29
Abstract
Abstract Bicyclohexyl derivatives of formula I R.sup.1 --Cy--Cy--X--Y I wherein X is --CO--O-- or --O--CO--, Y is alkyl or perfluoroalkyl in each case of 1-8 C atoms, --Cy--Cy--R 2 , --Cy--Ph--R 2 , --Ph--Cy--R 2 , --Ph--Ph--R 2 or --Ph--Dio--R 2 , Cy is 1,4-cyclohexylene, Ph is 1,4-phenylene, Dio is 1,3-dioxane-2,5-diyl and R 1 and R 2 are each alkyl or alkoxy in each case of 1-8 C atoms, can be used as components of liquid crystal dielectrics.
Inventors
- 👤 Rudolf Eidenschink
- 👤 Joachim Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:01
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/08; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3402; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/12; C09K19/08; C09K19/30; C09K19/3001; C09K19/3003; C09K19/3066; C09K19/3068; C09K2019/3422
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
54 words
A bicyclohexyl derivative of the formula R.sup.1 --Cy--Cy--X--y wherein X is --CO--O-- or O--CO--, Y is alkyl or perfluoroalkyl each of 1-8 C atoms, or --Ph--Dio--R 2 , Cy is 1,4-cyclohexylene, Ph is 1,4-phenylene, Dio is 1,3-dioxane-2,5-diyl and R 1 and R 2 are each independently alkyl or alkoxy each of 1-8 C atoms.
Claim 2
Dependent Claim
54 words
A bicyclohexyl derivative of the formula R.sup.1 --Cy--Cy--X--y wherein X is --CO--O-- or O--CO--, Y is alkyl or perfluoroalkyl each of 1-8 C atoms, or --Ph--Dio--R 2 , Cy is 1,4-cyclohexylene, Ph is 1,4-phenylene, Dio is 1,3-dioxane-2,5-diyl and R 1 and R 2 are each independently alkyl or alkoxy each of 1-8 C atoms.
Claim 3
Dependent Claim
24 words
A compound of claim 1 of the formula R 1 -Cy-Cy-CO-O-perfluoroalkyl R 1 -Cy-Cy-O-CO-perfluoroalkyl R 1 -Cy-Cy-O-CO-Ph-Dio-R 2 , or R 1 -Cy-Cy-CO-O-Ph-Dio-R 2
Claim 4
Dependent Claim
15 words
A compound of claim 1 of the formula R 1 -Cy-Cy-CO-O-alkyl or R 1 -Cy-Cy-O-CO-alkyl.
Claim 5
Dependent Claim
19 words
A compound of claim 1 wherein R 1 and R 2 or R 1 and Y are both alkyl.
Claim 6
Dependent Claim
17 words
A compound of claim 1 wherein all alkyl, perfluoroalkyl and alkoxy groups are of 1-5 C atoms.
Claim 7
Dependent Claim
15 words
A compound of claim 1 wherein all alkyl, alkoxy and perfluoroalkyl groups are straight chained.
Claim 8
Dependent Claim
78 words
A liquid crystal dielectric useful in electooptical display elements and comprising at least two liquid crystal components, wherein at least one such component is a bicyclohexyl derivative of the formula R.sup.1 --Cy--Cy--X--Y wherein X is --CO--O-- or O--CO--, Y is alkyl or perfluoroalkyl each of 1-8 C atoms, or --Ph--Dio--R 2 , Cy is 1,4-cyclohexylene, Ph is 1,4-phenylene, Dio is 1,3-dioxane-2,5-diyl and R 1 and R 2 are each independently alkyl or alkoxy each of 1-8 C atoms.
Claim 9
Dependent Claim
78 words
A liquid crystal dielectric useful in electooptical display elements and comprising at least two liquid crystal components, wherein at least one such component is a bicyclohexyl derivative of the formula R.sup.1 --Cy--Cy--X--Y wherein X is --CO--O-- or O--CO--, Y is alkyl or perfluoroalkyl each of 1-8 C atoms, or --Ph--Dio--R 2 , Cy is 1,4-cyclohexylene, Ph is 1,4-phenylene, Dio is 1,3-dioxane-2,5-diyl and R 1 and R 2 are each independently alkyl or alkoxy each of 1-8 C atoms.
Claim 10
Dependent Claim
8 words
A dielectric of claim 7 comprising 2-15 components.
Claim 11
Dependent Claim
16 words
A dielectric of claim 7 wherein the amount of said bicyclohexyl derivative is 0.1-30 wt %.
Claim 12
Dependent Claim
25 words
In an electrooptical display element comprising a liquid crystal cell containing a liquid crystal dielectric, the improvement wherein the dielectric is that of claim 7.
Claim 13
Dependent Claim
13 words
An electrooptical display element of claim 10 wherein the dielectric comprises 2-15 components.
Claim 14
Dependent Claim
53 words
A liquid crystalline dielectric of claim 7 wherein X is O--CO-- and y is perfluoroalkyl of 1-8 C atoms, or --Ph--Dio--R 2 ; or X is --CO--O-- and Y is alkyl or perfluoroalkyl each of 1-8 C atoms, --Cy--Cy--R 2 , --Cy--Ph--R 2 , --Ph--Cy--R 2 , --Ph--Ph--R 2 or --Ph--Dio--R 2 .
Claim 15
Dependent Claim
30 words
A liquid crystalline dielectric of claim 12 wherein said derivative is of the formula R 1 --Cy--Cy--CO--O-perfluoroalkyl R 1 --Cy--Cy--CO--O--Ph--Dio--R 2 R 1 --Cy--Cy--O--CO-perfluoroalkyl or R 1 --Cy--Cy--O--CO--Ph--Dio--R 2 .
Claim 16
Dependent Claim
16 words
A liquid crystalline dielectric of claim 12 wherein said derivative is of the formula R.sup.1 --Cy--Cy--CO--O--alkyl.
Claim 17
Dependent Claim
21 words
A liquid crystalline dielectric of claim 12 wherein R 1 and R 2 or R 1 and Y are both alkyl.
Claim 18
Dependent Claim
19 words
A liquid crystalline dielectric of claim 12 wherein all alkyl, perfluoroalkyl and alkoxy groups are of 1-5 C atoms.
Claim 19
Dependent Claim
17 words
A liquid crystalline dielectric of claim 12 wherein all alkyl, alkoxy and perfluoroalkyl groups are straight chained.
Claim 20
Dependent Claim
19 words
A liquid crystalline dielectric of claim 12 wherein Y is perfluoroalkyl of 1-8 C atoms, or --Ph--Dio--R 2 .
Claim 21
Dependent Claim
17 words
A compound of claim 1 wherein Y is perfluoroalkyl of 1-8 C atoms or --Ph--Dio--R 2 .
Claim 22
Dependent Claim
10 words
A compound of claim 1 of the formula R.sup.1 --Cy--Cy--O--CO-alkyl.
Claim 23
Dependent Claim
16 words
A liquid crystalline dielectric of claim 7 wherein said derivative is of the formula R.sup.1 --Cy--Cy--O--CO-alkyl.
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