US5180519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkenyl ether derivative and liquid crystal composition containing the same
Assignee: JNC Corp
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Filing: 1991-03-29
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Granted: 1993-01-19
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Expires: 2011-03-29
Abstract
Abstract An alkenyl ether derivative having a low viscosity, a good compatibility with other liquid crystalline compounds and being capable of use in preparing a liquid crystal display element having a high response rate are provided, which derivative is expressed by the formula R.sub.1 --CH.sub.2 --O--(CH.sub.2)n--A.sub.1 --A.sub.2 A.sub.3 --R.sub.2[1] wherein R 1 is a 2-7C alkenyl group having a double bond at its terminal or a double bond of a trans configuration at a position other than its terminal, R 2 is 1-10C alkyl group or alkoxy group, A 1 and A 2 each independently are a 1,4-phenylene or a trans-1,4-cyclohexylene, A 3 represents a 1,4-phenylene, a trans-1,4-cyclohexylene or a single bond and n is 1 or 2.
Inventors
- 👤 Manabu Uchida
- 👤 Makoto Ushioda
- 👤 Yasuyuki Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:01
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/215; C07C43/03; C07C43/14; C07C43/162; C07C43/164; C07C43/168; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/12; C09K19/30; C09K19/3001; C09K19/3003; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
An alkenyl ether compound expressed by the formula R.sub.1 --CH.sub.2 --O--(CH.sub.2)n--A.sub.1 --A.sub.2 --A.sub.3 --R.sub.2[I] wherein R 1 represents an alkenyl group of 2 to 7 carbon atoms having a double bond at its terminal or a double bond of a trans configuration at a position other than its terminal, R 2 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms, A 1 and A 2 each independently represent a 1,4-phenylene or a trans-1,4-cyclohexylene, A 3 represents a 1,4-phenylene, a trans-1,4-cyclohexylene or a single bond and n represents 1 or 2.
Claim 2
Dependent Claim
96 words
An alkenyl ether compound expressed by the formula R.sub.1 --CH.sub.2 --O--(CH.sub.2)n--A.sub.1 --A.sub.2 --A.sub.3 --R.sub.2[I] wherein R 1 represents an alkenyl group of 2 to 7 carbon atoms having a double bond at its terminal or a double bond of a trans configuration at a position other than its terminal, R 2 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms, A 1 and A 2 each independently represent a 1,4-phenylene or a trans-1,4-cyclohexylene, A 3 represents a 1,4-phenylene, a trans-1,4-cyclohexylene or a single bond and n represents 1 or 2.
Claim 3
Dependent Claim
16 words
An alkenyl ether compound according to claim 1, wherein said R 1 represents CH 2 ═CH--.
Claim 4
Dependent Claim
16 words
An alkenyl ether compound according to claim 1, wherein said R 1 represents (E)--CH 3 CH═CH--.
Claim 5
Dependent Claim
27 words
An alkenyl ether compound according to claim 1, wherein said R 2 represents an alkyl group or an alkoxy group each of 1 to 5 carbon atoms.
Claim 6
Dependent Claim
25 words
A liquid crystal composition comprising at least two components at least one of which is an alkenyl ether compound as set forth in claim 1.
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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) | 1996-01-19 | 1996-07-20 | 1997-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-19 | 2000-07-20 | 2001-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-19 | 2004-07-20 | 2005-01-19 | $7700.00 | Window Closed / Lapsed |