US5100579A
Expired / Lapsed
US
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Polyphenyl-based ester compounds and liquid crystal compositions containing same
Assignee: Ajinomoto Co Inc
•
Filing: 1989-10-06
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Granted: 1992-03-31
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Expires: 2009-10-06
Abstract
Abstract Polyphenyl-based liquid crystal compounds represented by the following general formula (1) and liquid crystal composition containing the same: ##STR1## wherein R 1 represents a straight or branched C 1-18 alkyl group, haloalkyl group, aralkyl group or haloaralkyl group with or without optically active carbon, R 2 represents a straight or branched C 1-6 alkyl group, haloalkyl group or aralkyl group with or without optically active carbon, W represents (1) --OCO-- or --COO--, in which case T represents a halogen atom or a methyl group, or (2) a single bond, --O-- or --OCOO--, in which case T represents a halogen atom, X represents --OCO--, --COO--, --C═C--, --CH═N--, --N═CH, Y represents single bond, --O--, --COO--, --OCO--, --CH 2 --, --OCH 2 --, --COOCH 2 -- or --OCOCH 2 --, Z 1 and Z 2 represents a hydrogen or halogen atom, a cyano group or nitro group, Z 1 may be the same or different from Z 2 , l and m are one or more than one each and a total of l and m is three or more than three, the carbon atom marked with * is an asymmetric carbon atom.
Inventors
- 👤 Ryoichi Higuchi
- 👤 Takao Sakurai
- 👤 Tatsuru Tabohashi
- 👤 Naoko Mikami
- 👤 Kiriko Akaiwa
- 👤 Eri Yamamoto
- 👤 Koji Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:45
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021; C09K19/12; C09K19/126
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
88 words
A liquid crystal compound having the formula: ##STR62## wherein R 1 is a straight chain C 6-18 alkyl group, R 2 is a branched R 3-6 alkyl group with or without an optically active carbon, W is a single bond, --O--, --COO--, --OCO-- or --OCOO--, X is --OCO-- or --COO--, Y is --OCO--, Z1 and Z2 are a hydrogen or halogen atom, where Z1 may be the same or different from Z2, l and m are 1 or 2, and the sum of l and m is 3.
Claim 2
Dependent Claim
88 words
A liquid crystal compound having the formula: ##STR62## wherein R 1 is a straight chain C 6-18 alkyl group, R 2 is a branched R 3-6 alkyl group with or without an optically active carbon, W is a single bond, --O--, --COO--, --OCO-- or --OCOO--, X is --OCO-- or --COO--, Y is --OCO--, Z1 and Z2 are a hydrogen or halogen atom, where Z1 may be the same or different from Z2, l and m are 1 or 2, and the sum of l and m is 3.
Claim 3
Dependent Claim
61 words
A liquid crystal compound having the formula ##STR63## wherein R 1 is a straight chain C 6-18 alkyl group, R 2 is a branched C 3-6 alkyl group with or without an optically active carbon, W is a single bond, --COO--, --O--, --OCOO-- or --OCO--, X is --COO-- or --OCO--, Y is --OCO-- and Z2 is a hydrogen or halogen atom.
Claim 4
Dependent Claim
61 words
A liquid crystal compound having the formula ##STR63## wherein R 1 is a straight chain C 6-18 alkyl group, R 2 is a branched C 3-6 alkyl group with or without an optically active carbon, W is a single bond, --COO--, --O--, --OCOO-- or --OCO--, X is --COO-- or --OCO--, Y is --OCO-- and Z2 is a hydrogen or halogen atom.
Claim 5
Dependent Claim
58 words
A liquid crystal compound having the formula ##STR64## wherein R 1 is a straight-chain C 6-18 alkyl group, R 2 is a branched C 3-6 alkyl group with or without an optically active carbon, W is a single bond, --COO-- or --O--, X is --COO-- or --OCO--, Y is --OCO-- and Z1 is a hydrogen or halogen atom.
Claim 6
Dependent Claim
58 words
A liquid crystal compound having the formula ##STR64## wherein R 1 is a straight-chain C 6-18 alkyl group, R 2 is a branched C 3-6 alkyl group with or without an optically active carbon, W is a single bond, --COO-- or --O--, X is --COO-- or --OCO--, Y is --OCO-- and Z1 is a hydrogen or halogen atom.
Claim 7
Dependent Claim
104 words
A liquid crystal composition comprising at least two components, wherein at least one component is a smectic liquid crystal compound having the formula ##STR65## wherein R 1 is a straight-chain C 6-18 alkyl group, R 2 is a branched C 3-6 alkyl group with or without an optically active carbon, W is a single bond, --COO--, --OCO--, --O-- or --OCOO--, X is --OCO-- or --COO--, Y is --OCO--, Z1 and Z2 are a hydrogen or halogen atom, where Z1 may be the same or different from Z2, and l and m are 1 or 2, were the sum of l and m is 3.
Claim 8
Dependent Claim
104 words
A liquid crystal composition comprising at least two components, wherein at least one component is a smectic liquid crystal compound having the formula ##STR65## wherein R 1 is a straight-chain C 6-18 alkyl group, R 2 is a branched C 3-6 alkyl group with or without an optically active carbon, W is a single bond, --COO--, --OCO--, --O-- or --OCOO--, X is --OCO-- or --COO--, Y is --OCO--, Z1 and Z2 are a hydrogen or halogen atom, where Z1 may be the same or different from Z2, and l and m are 1 or 2, were the sum of l and m is 3.
Claim 9
Dependent Claim
9 words
The compound of claim 1, wherein X is --OCO--.
Claim 10
Dependent Claim
9 words
The compound of claim 1, wherein X is --COO--.
Claim 11
Dependent Claim
11 words
The compound of claim 1, wherein W is a single bond.
Claim 12
Dependent Claim
9 words
The compound of claim 1, wherein W is --O--.
Claim 13
Dependent Claim
9 words
The compound of claim 1, wherein W is --COO--.
Claim 14
Dependent Claim
9 words
The compound of claim 1, wherein W is --OCO--.
Claim 15
Dependent Claim
9 words
The compound of claim 1, wherein W is --OCOO--.
Claim 16
Dependent Claim
15 words
The compound of claim 1, wherein R 1 is a straight-chain C 6-10 alkyl group.
Claim 17
Dependent Claim
9 words
The composition of claim 4, wherein X is --OCO--.
Claim 18
Dependent Claim
9 words
The composition of claim 4, wherein X is --COO--.
Claim 19
Dependent Claim
11 words
The composition of claim 4, wherein W is a single bond.
Claim 20
Dependent Claim
9 words
The composition of claim 4, wherein W is --O--.
Claim 21
Dependent Claim
9 words
The composition of claim 4, wherein W is --COO--.
Claim 22
Dependent Claim
9 words
The composition of claim 4, wherein W is --OCO--.
Claim 23
Dependent Claim
9 words
The composition of claim 4, wherein W is --OCOO--.
Claim 24
Dependent Claim
15 words
The composition of claim 4, wherein R 1 is a straight-chain C 6-10 alkyl group.
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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) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |