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US4663073A
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Tercyclohexyls
Assignee: Merck Patent GmbH
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Filing: 1985-07-12
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Granted: 1987-05-05
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Expires: 2005-07-12
Abstract
Abstract Liquid-crystalline tercyclohexyls of the formula <IMAGE> I in which R is an alkyl group with 1-12 C atoms, in which one or two non-adjacent CH2 groups can be replaced by 0, X is -CN, -COOR1, -OOCR1, -COR1 or R1, and R1 is an alkyl group having 1-12 C atoms, with the proviso that in the case where X=R1 at least one CH2 group in the alkyl group R is replaced by 0, and useful in liquid-crystalline dielectrics.
Inventors
- 👤 Wolfgang Sucrow
- 👤 Herbert Wolter
- 👤 Rudolf Eidenschink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:23
CPC Classifications
C; C07; C07C; C07C255/00; C07C43/00; C07C43/02; C07C43/18; C07C43/184; C07C45/00; C07C45/004; C07C49/00; C07C49/29; C07C49/313; C07C49/35; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3003; C09K2019/3006
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
61 words
In a liquid crystalline phase having at least two liquid-crystalline components, the improvement wherein at least one component is a tercyclohexyl of the formula ##STR5## wherein R is alkyl of 1-12C atoms, X is --COOR 1 , --OOCR 1 , --COR 1 or OR 2 ; R 2 is alkyl of 1-11C atoms and R 1 is alkyl of 1-12C atoms.
Claim 2
Dependent Claim
61 words
In a liquid crystalline phase having at least two liquid-crystalline components, the improvement wherein at least one component is a tercyclohexyl of the formula ##STR5## wherein R is alkyl of 1-12C atoms, X is --COOR 1 , --OOCR 1 , --COR 1 or OR 2 ; R 2 is alkyl of 1-11C atoms and R 1 is alkyl of 1-12C atoms.
Claim 3
Dependent Claim
19 words
A phase of claim 1 wherein said compound is of the formula R-Cyc-Cyc-Cyc-OR.sup.2 or R-Cyc-Cyc-Cyc-OOCR.sup.1 wherein Cyc is 1,4-cyclohexylene.
Claim 4
Dependent Claim
18 words
A phase of claim 1 wherein in said compound all three 1,4-cyclohexylene groups are trans-substituted in the 1,4-positions.
Claim 5
Dependent Claim
15 words
A phase of claim 1 wherein in said compound all alkyl portions are straight chains.
Claim 6
Dependent Claim
16 words
A phase of claim 1 wherein in said compound all alkyl portions are of 2-10C atoms.
Claim 7
Dependent Claim
27 words
A phase of claim 1 wherein said compound is of the formula Alkoxy-Cyc-Cyc-Cyc-alkyl Alkyl-Cyc-Cyc-Cyc-COOAlkyl Alkyl-Cyc-Cyc-Cyc-OOCAlkyl wherein Cyc is 1,4-cyclohexylene and the alkyl groups are of 1-10C atoms.
Claim 8
Dependent Claim
33 words
A compound of claim 1 wherein said phase is of the formula n-alkyl-Cyc-Cyc-Cyc-OOC-CH.sub.2 CH.sub.2 CH.sub.3 n-alkyl-Cyc-Cyc-Cyc-O-CH.sub.2 CH.sub.3 n-alkyl-Cyc-Cyc-Cyc-O-CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.3 wherein cyc is 1,4-cyclohexylene and the n-alkyl groups are of 2-8C atoms.
Claim 9
Dependent Claim
18 words
A phase of claim 1 wherein said compound is of formula R-Cyc-Cyc-Cyc-OR.sup.2 R-Cyc-Cyc-Cyc-COOR.sup.1 R-Cyc-Cyc-Cyc-OOCR.sup.1 wherein Cyc is 1,4-cyclohexylene.
Claim 10
Dependent Claim
20 words
In a liquid-crystal display element comprising a liquid crystal phase, the improvement wherein the phase is one of claim 1.
Claim 11
Dependent Claim
21 words
In an electrooptical display element comprising a liquid crystal dielectric, the improvement wherein the dielectric is a phase of claim 1.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
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