US4505837A
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Liquid crystalline phenylcyclohexene derivatives
Assignee: Merck Patent GmbH
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Filing: 1983-03-24
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Granted: 1985-03-19
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Expires: 2003-03-24
Abstract
Abstract A phenylcyclohexene of the formula ##STR1## wherein n is 1 or 2, X is --H, --R, --OR, --OCOR, --OCOOR, --CF 3 or --F, and when n is 1, X can also be ##STR2## R is alkyl of 1-8 C atoms and when two R groups are present they can be the same or different, has valuable liquid crystalline properties.
Inventors
- 👤 Michael Romer
- 👤 Ludwig Pohl
- 👤 Rudolf Eidenschink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:55
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/18; C07C13/00; C07C13/28; C07C17/26; C07C17/263; C07C17/2632; C07C22/00; C07C22/02; C07C22/04; C07C22/08; C07C25/00; C07C25/18; C07C255/00; C07C43/00; C07C43/02; C07C43/20; C07C43/215; C07C63/00; C07C63/33; C07C63/49; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3098; C07C2601/00; C07C2601/12; C07C2601/16; C09K2323/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
64 words
In an electrooptical display including a liquid crystalline material, the improvement wherein the liquid crystalline material comprises at least one compound of the formula ##STR15## wherein n is 1 or 2, X is --H, --R, --OR, --OCOR, --OCOOR, --CF 3 or --F and R is alkyl of 1-8 C atoms and when two R groups are present they can be the same or different.
Claim 2
Dependent Claim
64 words
In an electrooptical display including a liquid crystalline material, the improvement wherein the liquid crystalline material comprises at least one compound of the formula ##STR15## wherein n is 1 or 2, X is --H, --R, --OR, --OCOR, --OCOOR, --CF 3 or --F and R is alkyl of 1-8 C atoms and when two R groups are present they can be the same or different.
Claim 3
Dependent Claim
44 words
In an electrooptical display of claim 1 including a liquid crystalline material, the improvement wherein the liquid crystalline material comprises at least one compound of the formula ##STR16## wherein X 1 is --R, --OR or --OCOR and R is alkyl of 1-8 C atoms.
Claim 4
Dependent Claim
48 words
In an electrooptical display of claim 1 including a liquid crystalline material, the improvement wherein the liquid crystalline material comprises at least one compound of the formula ##STR17## wherein X 2 is --H, --R, --OR, --OCOR, --F or --CF 3 and R is alkyl of 1-8 C atoms.
Claim 5
Dependent Claim
67 words
In an electrooptical display of claim 1 including a liquid crystalline material, the improvement wherein the liquid crystalline material comprises at least one compound of the formula ##STR18## wherein n is 1 or 2, X is --H, --R, --OR, --OCOR, --OCOOR, --CF 3 or --F and R is alkyl of 1-8 C atoms and when two R groups are present, only one is a branched alkyl group.
Claim 6
Dependent Claim
80 words
In an electrooptical display of claim 1 including a liquid crystalline material, the improvement wherein the liquid crystalline material comprises at least one compound of the formula ##STR19## wherein n is 1 or 2, X is --H, --R, --OR, --OCOR, --OCOOR, --CF 3 or --F and R is alkyl of 1-8 C atoms and when two R groups are present they can be the same or different and the total number of carbon atoms in both R groups is 2-14.
Claim 7
Dependent Claim
65 words
In a liquid crystalline dielectric comprising at least two liquid crystalline components, the improvement wherein at least one component is a compound of the formula ##STR20## wherein n is 1 or 2, X is --H, --R, --OR, --OCOR, --OCOOR, --CF 3 or --F and R is alkyl of 1-8 C atoms and when two R groups are present they can be the same or different.
Claim 8
Dependent Claim
65 words
In a liquid crystalline dielectric comprising at least two liquid crystalline components, the improvement wherein at least one component is a compound of the formula ##STR20## wherein n is 1 or 2, X is --H, --R, --OR, --OCOR, --OCOOR, --CF 3 or --F and R is alkyl of 1-8 C atoms and when two R groups are present they can be the same or different.
Claim 9
Dependent Claim
38 words
In a liquid crystalline dielectric of claim 6 the improvement wherein at least one component is a compound of the formula ##STR21## wherein X 1 is --R, --OR or --OCOR and R is alkyl of 1-8 C atoms.
Claim 10
Dependent Claim
49 words
In a liquid crystalline dielectric of claim 6 comprising at least two liquid crystalline components, the improvement wherein at least one component is a compound of the formula ##STR22## wherein X 2 is --H, --R, --OR, --OCOR, --F or --CF 3 and R is alkyl of 1-8 C atoms.
Claim 11
Dependent Claim
68 words
In a liquid crystalline dielectric of claim 6 comprising at least two liquid crystalline components, the improvement wherein at least one component is a compound of the formula ##STR23## wherein n is 1 or 2, X is --H, --R, --OR, --OCOR, --OCOOR, --CF 3 or --F and R is alkyl of 1-8 C atoms and when two R groups are present, only one is a branched alkyl group.
Claim 12
Dependent Claim
81 words
In a liquid crystalline dielectric of claim 6 comprising at least two liquid crystalline components, the improvement wherein at least one component is a compound of the formula ##STR24## wherein n is 1 or 2, X is --H, --R, --OR, --OCOR, --OCOOR, --CF 3 or --F and R is alkyl of 1-8 C atoms and when two R groups are present they can be the same or different and the total number of carbon atoms in both R groups is 2-14.
Claim 13
Dependent Claim
19 words
A display of claim 3 wherein X 2 is R,OR or OCOR and R is alkyl of 1-8 C-atoms.
Claim 14
Dependent Claim
19 words
A display of claim 1 wherein X 2 is R,OR or OCOR and R is alkyl of 1-8 C-atoms.
Claim 15
Dependent Claim
19 words
A dielectric of claim 8 wherein X 2 is R,OR or OCOR and R is alkyl of 1-8 C-atoms.
Claim 16
Dependent Claim
19 words
A dielectric of claim 6 wherein X 2 is R,OR or OCOR and R is alkyl of 1-8 C-atoms.
Claim 17
Dependent Claim
15 words
A display of claim 1 wherein at least one compound is of the formula: ##STR25##
Claim 18
Dependent Claim
15 words
A dielectric of claim 6 wherein at least one compound is of the formula: ##STR26##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |