US4876027A
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Optically active composition, mesomorphic compound and liquid crystal device
Assignee: Canon Inc
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Filing: 1989-01-27
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Granted: 1989-10-24
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Expires: 2009-01-27
Abstract
Abstract 4-Alkoxybenzenethiol, bis-(4-alkoxyphenyl)disulfide, and mesomorphic compound deviced therefrom represented by the formula: ##STR1## wherein R 1 is an alkyl or alkoxy group having 1-18 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, 1=1 or 2, and m=0 or 1.
Inventors
- 👤 Kazuo Yoshinaga
- 👤 Kazuharu Katagiri
- 👤 Toyoko Kobayashi
- 👤 Kenji Shinjo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:49
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/28; C07; C07C; C07C327/00
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
45 words
A mesomorphic compound represented by the following formula: ##STR30## wherein R 1 is an alkyl group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, 1 is 1 or 2, and m is 0 or 1.
Claim 2
Dependent Claim
45 words
A mesomorphic compound represented by the following formula: ##STR30## wherein R 1 is an alkyl group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, 1 is 1 or 2, and m is 0 or 1.
Claim 3
Dependent Claim
18 words
A mesomorphic compound according to claim 1, wherein R* is 3-methylpentyl, 4-methylhexyl, 1-methylheptyl, 2-methylbutyl, 3-methyloctyl, 2-methylnonyl, or 2-methyldecyl.
Claim 4
Dependent Claim
28 words
A mesomorphic compound according to claim 1, which causes successive phase transition of isotropic phase, cholesteric phase and chiral smectic C phase in the course of temperature decrease.
Claim 5
Dependent Claim
31 words
A mesomorphic compound according to claim 1, which causes successive phase transition of isotrophic phase, cholesteric phase, smectic A phase, and chiral smectic C phase in the course of temperature decrease.
Claim 6
Dependent Claim
14 words
A mesomorphic compound according to claim 1, which is represented by the formula: ##STR31##
Claim 7
Dependent Claim
14 words
A mesomorphic compound according to claim 1, which is represented by the formula: ##STR32##
Claim 8
Dependent Claim
14 words
A mesomorphic compound according to claim 1, which is represented by the formula: ##STR33##
Claim 9
Dependent Claim
14 words
A mesomorphic compound according to claim 1, which is represented by the formula: ##STR34##
Claim 10
Dependent Claim
42 words
A mesomorphic compound represented by the following formula: ##STR35## wherein R 1 is an alkyl or alkoxy group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, and m is 0 or 1.
Claim 11
Dependent Claim
42 words
A mesomorphic compound represented by the following formula: ##STR35## wherein R 1 is an alkyl or alkoxy group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, and m is 0 or 1.
Claim 12
Dependent Claim
18 words
A mesomorphic compound according to claim 9, wherein R* is 3-methylpentyl, 4-methylhexyl, 1-methylheptyl, 2-methylbutyl, 3-methyloctyl, 2-methylnonyl, or 2-methyldecyl.
Claim 13
Dependent Claim
31 words
A mesomorphic compound according to claim 9, which causes successive phase transition of isotropic phase, cholesteric phase, smectic A phase, and chiral smectic C phase in the course of temperature decrease.
Claim 14
Dependent Claim
14 words
A mesomorphic compound according to claim 9, which is represented by the formula: ##STR36##
Claim 15
Dependent Claim
14 words
A mesomorphic compound according to claim 9, which is represented by the formula: ##STR37##
Claim 16
Dependent Claim
42 words
A mesomorphic compound represented by the following formula: ##STR38## wherein R 1 is an alkyl or alkoxy grup having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, and l is 1 or 2.
Claim 17
Dependent Claim
42 words
A mesomorphic compound represented by the following formula: ##STR38## wherein R 1 is an alkyl or alkoxy grup having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, and l is 1 or 2.
Claim 18
Dependent Claim
18 words
A mesomorphic compound according to claim 14, wherein R* is 3-methylpentyl, 4-methylhexyl, 1-methylheptyl, 2-methylbutyl, 3-methyloctyl, 2-methylnonyl, or 2-methyldecyl.
Claim 19
Dependent Claim
28 words
A mesomorphic compound according to claim 14, which causes successive phase transition of isotropic phase, cholesteric phase and chiral smectic C phase in the course of temperature decrease.
Claim 20
Dependent Claim
14 words
A mesomorphic compound according to claim 14, which is represented by the formula: ##STR39##
Claim 21
Dependent Claim
59 words
A chiral smectic liquid crystal composition comprising at least two compounds and containing at least one compound represented by the following formula: ##STR40## wherein R 1 is an alkyl group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an symmetric carbon atom, l is 1 or 2, and m is 0 or 1.
Claim 22
Dependent Claim
59 words
A chiral smectic liquid crystal composition comprising at least two compounds and containing at least one compound represented by the following formula: ##STR40## wherein R 1 is an alkyl group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an symmetric carbon atom, l is 1 or 2, and m is 0 or 1.
Claim 23
Dependent Claim
19 words
A liquid crystal composition according to claim 18, wherein R* is 3-methylpentyl, 4-methylhexyl, 1-methylheptyl, 2-methylbutyl, 3-methyloctyl, 2-methylnonyl, or 2-methyldecyl.
Claim 24
Dependent Claim
56 words
A chiral smectic liquid crystal composition comprising at least two components and containing at least one compound represented by the following formula: ##STR41## wherein R 1 is an alkyl or alkoxy group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, and m is 0 or 1.
Claim 25
Dependent Claim
56 words
A chiral smectic liquid crystal composition comprising at least two components and containing at least one compound represented by the following formula: ##STR41## wherein R 1 is an alkyl or alkoxy group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, and m is 0 or 1.
Claim 26
Dependent Claim
19 words
A liquid crystal composition according to claim 20, wherein R* is 3-methylpentyl, 4-methylhexyl, 1-methylheptyl, 2-methylbutyl, 3-methyloctyl, 2-methylnonyl, or 2-methyldecyl.
Claim 27
Dependent Claim
55 words
A chiral smectic liquid crystal composition comprising at least two components and containing at least one compound represented by the following formula: ##STR42## wherein R 1 is an alkylor alkoxy group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, and l is 1 or 2.
Claim 28
Dependent Claim
55 words
A chiral smectic liquid crystal composition comprising at least two components and containing at least one compound represented by the following formula: ##STR42## wherein R 1 is an alkylor alkoxy group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, and l is 1 or 2.
Claim 29
Dependent Claim
19 words
A liquid crystal composition according to claim 22, wherein R* is 3-methylpentyl, 4-methylhexyl, 1-methylheptyl, 2-methylbutyl, 3-methyloctyl, 2-methylnonyl, or 2-methyldecyl.
Claim 30
Dependent Claim
81 words
A liquid crystal device, comprising: a pair of substrates and a chiral smectic liquid crystal composition disposed between the substrates, said chiral smectic liquid crystal composition comprising at least two components and containing at least one compound represented by the following formula: ##STR43## wherein R 1 is an alkyl or alkoxy grup having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, l is 1 or 2, and m is 0 or 1.
Claim 31
Dependent Claim
81 words
A liquid crystal device, comprising: a pair of substrates and a chiral smectic liquid crystal composition disposed between the substrates, said chiral smectic liquid crystal composition comprising at least two components and containing at least one compound represented by the following formula: ##STR43## wherein R 1 is an alkyl or alkoxy grup having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, l is 1 or 2, and m is 0 or 1.
Claim 32
Dependent Claim
34 words
A liquid device according to claim 24, wherein said chiral smectic liquid crystal composition in chiral smectic C phase is formed in a layer having a thickness small enough to release the spiral structure.
Claim 33
Dependent Claim
25 words
A liquid crystal device according to claim 24, wherein at least one of said pair of substrates has beenn subjected to a uniaxial orientation treatment.
Claim 34
Dependent Claim
15 words
A liquid crystal device according to claim 24, wherein said uniaxial orientation treatment comprises rubbing.
Claim 35
Dependent Claim
76 words
A liquid crystal device, comprising: a pair of substrates and a chiral smectic liquid crystal composition disposed between the substrates, said chiral smectic liquid crystal composition comprising at least two components and containing at least one compound represented by the following formula: ##STR44## wherein R 1 is an alkyl or alkoxy group having 6-12 carbon atoms, R* is an alkyl grup having 4-12 carbon atoms including an asymmetric carbon atom, and m is 0 or 1.
Claim 36
Dependent Claim
76 words
A liquid crystal device, comprising: a pair of substrates and a chiral smectic liquid crystal composition disposed between the substrates, said chiral smectic liquid crystal composition comprising at least two components and containing at least one compound represented by the following formula: ##STR44## wherein R 1 is an alkyl or alkoxy group having 6-12 carbon atoms, R* is an alkyl grup having 4-12 carbon atoms including an asymmetric carbon atom, and m is 0 or 1.
Claim 37
Dependent Claim
19 words
A liquid crystal device according to claim 28, wherein R* is 3-methylpentyl, 4-methylhexyl, 1-methylheptyl, 2-methylbutyl, 3-methyloctyl, 2-methylnonyl, or 2-methyldecyl.
Claim 38
Dependent Claim
34 words
A liquid crystal device according to claim 28, wherein said chiral smectic liquid crystal composition in chiral smectic phase is formed in a layer having a thickness small enough to release the spiral structure.
Claim 39
Dependent Claim
25 words
A liquid crystal device according to claim 28, wherein at least one of said pair of substrates has been subjected to a uniaxial orientation treatment.
Claim 40
Dependent Claim
15 words
A liquid crystal device according to claim 28, wherein said uniaxial orientation treatment comprises rubbing.
Claim 41
Dependent Claim
76 words
A liquid crystal device, comprising: a pair of substrates and a chiral smectic liquid crystal composition disposed between the substrates, said chiral smectic liquid crystal composition comprising at least two components and containing at least one compound represented by the following formula: ##STR45## wherein R 1 is an alkyl or alkoxy group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, and l is 1 or 2.
Claim 42
Dependent Claim
76 words
A liquid crystal device, comprising: a pair of substrates and a chiral smectic liquid crystal composition disposed between the substrates, said chiral smectic liquid crystal composition comprising at least two components and containing at least one compound represented by the following formula: ##STR45## wherein R 1 is an alkyl or alkoxy group having 6-12 carbon atoms, R* is an alkyl group having 4-12 carbon atoms including an asymmetric carbon atom, and l is 1 or 2.
Claim 43
Dependent Claim
19 words
A liquid crystal device according to claim 33, wherein R* is 3-methylpentyl, 4-methylhexyl, 1-methylheptyl, 2-methylbutyl, 3-methyloctyl, 2-methylnonyl, or 2-methyldecyl.
Claim 44
Dependent Claim
35 words
A liquid crystal device according to claim 33, wherein said chiral smectic liquid crystal composition in chiral smectic C phase is formed in a layer having a thickness small enough to release the spiral structure.
Claim 45
Dependent Claim
25 words
A liquid crystal device according to claim 33, wherin at least one of said pair of substrates has been subjected to a uniaxial orientation treatment.
Claim 46
Dependent Claim
15 words
A liquid crystal device according to claim 33, wherein said uniaxial orientation treatment comprises rubbing.
Claim 47
Dependent Claim
19 words
A liquid crystal device according to claim 24, wherein R* is 3-methylpentyl, 4-methylhexyl, 1-methylheptyl, 2-methylbutyl, 3-methyloctyl, 2-methylnonyl or 2-methyldecyl.
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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) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |