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US5230829A
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Phenylcyclohexanes, and a liquid-crystalline medium
Assignee: Merck Patent GmbH
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Filing: 1991-06-24
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Granted: 1993-07-27
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Expires: 2011-06-24
Abstract
Abstract The invention relates to novel phenylcyclohexanes of the formula I ##STR1## in which Q is CH--Hal or C--Hal 2 where Hal is F or Cl, n is 1 to 5, r is 0 to 6, A is a single bond, ##STR2## X is F, Cl, --CF 3 , --OCF 3 or --OCHF 2 , and Y and Z are each, independently of one another, H or F.
Inventors
- 👤 Ekkehard Bartmann
- 👤 Joachim Krause
- 👤 Eike Poetsch
- 👤 Reinhard Hittich
- 👤 Bernhard Rieger
- 👤 Ulrich Finkenzeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:02
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/225; C07C25/00; C07C25/18; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3003; C09K19/3028; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
53 words
A phenylcyclohexane of formula I ##STR19## wherein Q is CH--Hal or C--Hal 2 ; Hal is F or Cl; n is 1 to 5; r is 0 to 6; A is a single bond, ##STR20## X is F or Cl; and Y and Z are each, independently of one another, H or F.
Claim 2
Dependent Claim
53 words
A phenylcyclohexane of formula I ##STR19## wherein Q is CH--Hal or C--Hal 2 ; Hal is F or Cl; n is 1 to 5; r is 0 to 6; A is a single bond, ##STR20## X is F or Cl; and Y and Z are each, independently of one another, H or F.
Claim 3
Dependent Claim
25 words
In a liquid-crystalline medium containing at least two liquid-crystalline components, the improvement wherein at least one component is a phenylcyclohexane compound according to claim 1.
Claim 4
Dependent Claim
22 words
In an electrooptical display device comprising a liquid-crystal cell, the improvement wherein said liquid-crystal cell contains a medium according to claim 2.
Claim 5
Dependent Claim
24 words
In a method of generating an electrooptical display using an electrooptical display device, the improvement wherein said device is a device of claim 3.
Claim 6
Dependent Claim
14 words
A compound according to claim 1, wherein Y is F and Z is H.
Claim 7
Dependent Claim
14 words
A compound according to claim 1, wherein Y is F and Z is F.
Claim 8
Dependent Claim
23 words
A compound according to claim 1, wherein --(CH 2 ) r -- is a single bond, methylene, ethylene, n-propylene, n-butylene, n-pentylene, or n-hexylene.
Claim 9
Dependent Claim
21 words
A compound according to claim 1, wherein C n H 2n+1 is a straight-chain alkyl having up to 3 carbon atoms.
Claim 10
Dependent Claim
16 words
A liquid-crystalline medium according to claim 3, wherein said medium contains 1%-40% of said phenylcyclohexane compound.
Claim 11
Dependent Claim
17 words
A liquid-crystalline medium according to claim 3, wherein said medium contains 3-5 phenylcyclohexane compounds of formula I.
Claim 12
Dependent Claim
14 words
A compound according to claim 1, wherein Q is --CHF-- or --CF 2 --.
Claim 13
Dependent Claim
14 words
A compound according to claim 1, wherein r is 1-3 and n is 1-5.
Claim 14
Dependent Claim
16 words
A compound according to claim 1, wherein a is a single bond, 1,4-cyclohexylene, 1,4-phenylene, or ##STR21##
References Cited (Backward Citations)
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