US4432885A
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Decalins
Assignee: F Hoffmann La Roche AG
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Filing: 1981-12-09
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Granted: 1984-02-21
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Expires: 2001-12-09
Abstract
Abstract Decalins of the formula ##STR1## wherein ring A is aromatic or a trans-1,4-disubstituted cyclohexane ring; R 2 is methyl, --CH 2 R', --OR', --CO--R', --CN, --COOH, --CO--OR', --CO--SR' or --O--CO--R'; R 1 is hydrogen, methyl, --CH 2 R, --OR or --CH 2 OR, or when R 2 is methyl, --CH 2 R', --OR' or --CO--R', R 1 also can be --CN, --COOH, --CO--OR, --CO--SR or --O--CO--R; R and R' each are alkyl; and R 1 and R 2 each have up to 12 carbon atoms and together have at most 14 carbon atoms, their racemates and optically active antipodes, are described. Liquid crystalline mixtures comprising Compound I as well as their use in electro-optical devices also are disclosed.
Inventors
- 👤 Martin Petrzilka
- 👤 Kuno Schleich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:36
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10; C07C17/12; C07C1/00; C07C1/20; C07C1/22; C07C1/32; C07C1/321; C07C1/322; C07C13/00; C07C13/28; C07C13/32; C07C13/47; C07C13/48; C07C13/50; C07C25/00; C07C25/18; C07C25/22; C07C255/00; C07C29/00; C07C29/132; C07C29/136; C07C29/14; C07C29/143; C07C29/17; C07C29/19; C07C37/00; C07C37/01; C07C37/055; C07C37/0555; C07C43/00; C07C43/02; C07C43/18; C07C43/20; C07C43/21; C07C45/00; C07C45/27; C07C45/29; C07C45/292; C07C45/44; C07C45/45; C07C45/46; C07C45/51; C07C45/511; C07C45/513; C07C45/61; C07C45/62; C07C45/67; C07C45/68; C07C49/00; C07C49/29; C07C49/313; C07C49/76; C07C49/782; C07C49/792; C07C63/00; C07C63/33; C07C63/49; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/32; C09K19/322; C07B; C07B2200/00; C07B2200/07; C07C2601/00; C07C2601/12; C07C2601/14; C07C2602/00; C07C2602/02; C07C2602/14; C07C2602/26; C07C2602/28; C09K2019/326
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
39 words
A compound of the formula ##STR47## wherein R 1 is hydrogen, methyl, --CH 2 R, --OR or --CH 2 OR, R is alkyl; and R 1 has up to 12 carbon atoms, its racemates or its optically active antipodes.
Claim 2
Dependent Claim
39 words
A compound of the formula ##STR47## wherein R 1 is hydrogen, methyl, --CH 2 R, --OR or --CH 2 OR, R is alkyl; and R 1 has up to 12 carbon atoms, its racemates or its optically active antipodes.
Claim 3
Dependent Claim
10 words
The compound of claim 1, wherein R is straight-chain alkyl.
Claim 4
Dependent Claim
15 words
The compound of claim 1 wherein R 1 is methyl, --CH 2 R or --OR.
Claim 5
Dependent Claim
14 words
The compound of claim 3, wherein R 1 is methyl or --CH 2 R.
Claim 6
Dependent Claim
14 words
The compound of claim 1 wherein R 1 has at most 9 carbon atoms.
Claim 7
Dependent Claim
14 words
The compound of claim 5 wherein R 1 has at most 7 carbon atoms.
Claim 8
Dependent Claim
14 words
The compound of claim 1 wherein R 1 is propyl, butyl, pentyl or heptyl.
Claim 9
Dependent Claim
8 words
The compound of claim 1 in racemic form.
Claim 10
Dependent Claim
43 words
An electro-optical cell containing a compound of the formula ##STR48## wherein R 1 is hydrogen, methyl, --CH 2 R, --OR or --CH 2 OR, R is alkyl; and R 1 has up to 12 carbon atoms, its racemates or its optically active antipodes.
Claim 11
Dependent Claim
43 words
An electro-optical cell containing a compound of the formula ##STR48## wherein R 1 is hydrogen, methyl, --CH 2 R, --OR or --CH 2 OR, R is alkyl; and R 1 has up to 12 carbon atoms, its racemates or its optically active antipodes.
Claim 12
Dependent Claim
52 words
A liquid crystalline mixture comprising at least two compounds at least one being a compound of the formula ##STR49## wherein R 1 is hydrogen, methyl, --CH 2 R, --OR or --CH 2 OR, R is alkyl; and R 1 has up to 12 carbon atoms, its racemates or its optically active antipodes.
Claim 13
Dependent Claim
52 words
A liquid crystalline mixture comprising at least two compounds at least one being a compound of the formula ##STR49## wherein R 1 is hydrogen, methyl, --CH 2 R, --OR or --CH 2 OR, R is alkyl; and R 1 has up to 12 carbon atoms, its racemates or its optically active antipodes.
Claim 14
Dependent Claim
28 words
The liquid crystalline mixture of claim 10 comprising a compound of the formula ##STR50## wherein R 23 is straight-chain alkyl or alkoxy of 2 to 7 carbon atoms.
Claim 15
Dependent Claim
26 words
The liquid crystalline mixture of claim 10 comprising a compound of the formula ##STR51## wherein R 24 is straight-chain alkyl of 3 to 7 carbon atoms.
Claim 16
Dependent Claim
26 words
The liquid crystalline mixture of claim 10 comprising a compound of the formula ##STR52## wherein R 24 is straight-chain alkyl of 3 to 7 carbon atoms.
Claim 17
Dependent Claim
26 words
The liquid crystalline mixture of claim 10 comprising a compound of the formula ##STR53## wherein R 24 is straight-chain alkyl of 3 to 7 carbon atoms.
Claim 18
Dependent Claim
26 words
The liquid crystalline mixture of claim 10 comprising a compound of the formula ##STR54## wherein R 25 is straight-chain alkyl of 2 to 7 carbon atoms.
Claim 19
Dependent Claim
40 words
The liquid crystalline mixture of claim 10 comprising a compound of the formula ##STR55## wherein R 24 is straight-chain alkyl of 3 to 7 carbon atoms and R 26 is cyano or straight-chain alkoxy of 1 to 3 carbon atoms.
Claim 20
Dependent Claim
26 words
The liquid crystalline mixture of claim 10 comprising a compound of the formula ##STR56## wherein R 25 is straight-chain alkyl of 2 to 7 carbon atoms.
Claim 21
Dependent Claim
26 words
The liquid crystalline mixture of claim 10 comprising a compound of the formula ##STR57## wherein R 25 is straight-chain alkyl of 2 to 7 carbon atoms.
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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) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |