US4606845A
Expired / Lapsed
US
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Bicyclohexylethanes
Assignee: Merck Patent GmbH
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Filing: 1984-05-14
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Granted: 1986-08-19
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Expires: 2004-05-14
Abstract
Abstract New bicyclohexylethanes of formula I R1-Cy-Cy-CH2CH2-A-(Cy)n-R2 (I) wherein R1 is alkyl; R2 is alkyl, in which one or two non-adjacent CH2 groups can be replaced by O atoms, or is F, Cl, Br, CN, -COOalkyl or -O-CO-alkyl; or one of the radicals R1 and R2 can also be H; A is Cy, or 1,4-phenylene which is unsubstituted or substituted by one or two F and/or Cl atoms and/or CH3 groups or by a CN group; Cy is 1,4-cyclohexylene and n is 0 or 1; the alkyl groups in each case containing 1-10 C atoms, with the proviso that n is 1 if A is Cy and R2 is CN, can be used as constituents of dielectrics for electrooptical display elements.
Inventors
- 👤 Michael Romer
- 👤 Rudolf Eidenschink
- 👤 Joachim Krause
- 👤 Bernhard Scheuble
- 👤 Georg Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:50
CPC Classifications
C; C07; C07C; C07C255/00; C07C13/00; C07C13/28; C07C25/00; C07C25/18; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/164; C07C43/168; C07C43/20; C07C43/21; C07C43/30; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3028
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
76 words
A bicyclohexylethane of the formula R.sup.1 --Cy--Cy--CH.sub.2 CH.sub.2 --A--(Cy).sub.n --R.sup.2 wherein R 1 is alkyl; R 2 is alkyl, alkyl in which one or two non-adjacent CH 2 groups are replaced by 0 atoms, or is --COOalkyl or --O--CO-alkyl; or one of R 1 or R 2 can also be H; A is Cy or 1,4-phenylene (Phe); Cy is 1,4-cyclohexylene; and n is 0 or 1; the alkyl groups in each case containing 1-10 C atoms.
Claim 2
Dependent Claim
76 words
A bicyclohexylethane of the formula R.sup.1 --Cy--Cy--CH.sub.2 CH.sub.2 --A--(Cy).sub.n --R.sup.2 wherein R 1 is alkyl; R 2 is alkyl, alkyl in which one or two non-adjacent CH 2 groups are replaced by 0 atoms, or is --COOalkyl or --O--CO-alkyl; or one of R 1 or R 2 can also be H; A is Cy or 1,4-phenylene (Phe); Cy is 1,4-cyclohexylene; and n is 0 or 1; the alkyl groups in each case containing 1-10 C atoms.
Claim 3
Dependent Claim
17 words
A compound of claim 1 of the formula R 1 --Cy--Cy--CH 2 CH 2 --Cy--R 2 .
Claim 4
Dependent Claim
17 words
A compound of claim 1 of the formula R 2 --Cy--Cy--CH 2 CH 2 --Phe--R 2 .
Claim 5
Dependent Claim
17 words
A compound of claim 1 of the formula R 1 --Cy--Cy--CH 2 CH 2 --Cy--Cy--R 2 .
Claim 6
Dependent Claim
17 words
A compound of claim 1 of the formula R 1 --Cy--Cy--CH 2 CH 2 --Phe--Cy--R 2 .
Claim 7
Dependent Claim
12 words
A compound of claim 1, wherein all alkyl groups are straight chained.
Claim 8
Dependent Claim
12 words
A compound of claim 1, wherein R 2 is alkyl, or alkoxy.
Claim 9
Dependent Claim
9 words
A compound of claim 1, wherein A is Cy.
Claim 10
Dependent Claim
9 words
A compound of claim 1, wherein n is 0.
Claim 11
Dependent Claim
30 words
A compound of claim 1 of the formula R 1 --Cy--Cy--CH 2 CH 2 --Cy--alkyl R 1 --Cy--Cy--CH 2 CH 2 --Phe--alkyl, or R 1 --Cy--Cy--CH 2 CH 2 --Phe--alkoxy.
Claim 12
Dependent Claim
21 words
A liquid crystal dielectric comprising at least two liquid crystalline components wherein at least one is a bicyclohexylethane of claim 1.
Claim 13
Dependent Claim
8 words
A dielectric of claim 11 comprising 2-15 components.
Claim 14
Dependent Claim
15 words
A dielectric of claim 11, wherein the amount of said bicyclohexylethane is 1-60 wt %.
Claim 15
Dependent Claim
20 words
In an electrooptical display element, comprising a liquid crystalline dielectric, the improvement wherein the dielectric is that of claim 11.
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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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |