US5382379A
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Cyclohexane derivative
Assignee: JNC Corp
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Filing: 1993-10-07
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Granted: 1995-01-17
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Expires: 2013-10-07
Abstract
Abstract A novel liquid crystal material having an alkenyl group at the end of the molecule, and having a low viscosity is provided. When the compound is added to a display element it is able to reduce the threshold voltage of the resulting display element. The compound is expressed by the formula (I), ##STR1## wherein X is a F atom, a trifluoromethyl group, a trifluoromethoxy group or a difluoromethoxy group, --A-- is 1,4-cyclohexylene or 1,4-phenylene, --B-- is 1,4-cyclohexylene, l is 0, 1 or 2, m is 0, 1 or 2, l+m≧1, Z is --CH 2 CH 2 -- or single bond, n is an integer of 0 to 4, R is a H atom or a linear or branched alkyl group of 1-7C, and when R is an alkyl group, the double bond has a trans-configuration. The compounds of the present invention are suitable as liquid crystal material for STN display element, and further are chemically stable; hence it is possible to prepare a composition having a superior multiplex characteristic and capable of effecting a low voltage drive.
Inventors
- 👤 Yuichi Onji
- 👤 Makoto Ushioda
- 👤 Shuichi Matsui
- 👤 Tomoyuki Kondo
- 👤 Yasuyuki Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:59
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/23; C07C17/26; C07C17/263; C07C17/2635; C07C25/00; C07C25/24; C07C43/00; C07C43/02; C07C43/20; C07C43/225; C07C45/00; C07C45/51; C07C45/511; C07C45/513; C07C45/56; C07C45/57; C07C45/59; C07C45/61; C07C45/62; C07C45/67; C07C45/68; C07C47/00; C07C47/20; C07C47/24; C07C47/38; C07C47/457; C07C49/00; C07C49/587; C07C49/687; C07C49/697; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3003; C09K2019/0444
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A cyclohexane derivative expressed by the formula (I) ##STR15## wherein X represents a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group or a difluoromethoxy group, --A-- represents 1,4-cyclohexylene or 1,4-phenylene, --B-- represents 1,4-cyclohexylene, l represents 0, 1 or 2, m represents 0, 1 or 2, and l+m=1or 2, Z represents --CH 2 CH 2 -- or a single bond, n represents an integer of 0 to 4, R represents a hydrogen atom or a linear alkyl group of 1 to 7 carbon atoms, and when R represents an alkyl group, the double bond has a trans-configuration; excluding 5-(4'-trans-(3",4",5"-trifluorophenyl)cyclohexyl)-2E-pentene.
Claim 2
Dependent Claim
98 words
A cyclohexane derivative expressed by the formula (I) ##STR15## wherein X represents a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group or a difluoromethoxy group, --A-- represents 1,4-cyclohexylene or 1,4-phenylene, --B-- represents 1,4-cyclohexylene, l represents 0, 1 or 2, m represents 0, 1 or 2, and l+m=1or 2, Z represents --CH 2 CH 2 -- or a single bond, n represents an integer of 0 to 4, R represents a hydrogen atom or a linear alkyl group of 1 to 7 carbon atoms, and when R represents an alkyl group, the double bond has a trans-configuration; excluding 5-(4'-trans-(3",4",5"-trifluorophenyl)cyclohexyl)-2E-pentene.
Claim 3
Dependent Claim
24 words
A cyclohexane derivative according to claim 1, wherein --A-- represents 1,4-cyclohexylene, l represents 1 , m represents 0 and Z represents a single bond.
Claim 4
Dependent Claim
23 words
A cyclohexane derivative according to claim 1, wherein --A-- represents 1,4-cyclohexylene, l represents 2, m represents 0 and Z represents a single bond.
Claim 5
Dependent Claim
22 words
A cyclohexane derivative according to claim 1, wherein l represents 0, m represents 1 and Z represents --CH 2 CH 2 --.
Claim 6
Dependent Claim
25 words
A cyclohexane derivative according to claim 1, wherein --A-- represents 1,4-cyclohexylene, l represents 1, m represents 1 and Z represents --CH 2 CH 2 --.
Claim 7
Dependent Claim
25 words
A cyclohexane derivative according to claim 1, wherein --B-- represents 1,4-cyclohexylene, l represents 0, m represents 2 and Z represents --CH 2 CH 2 --.
Claim 8
Dependent Claim
23 words
A cyclohexane derivative according to claim 1, wherein --A-- represents 1,4-phenylene, l represents 1, m represents 0 and Z represents a single bond.
Claim 9
Dependent Claim
25 words
A cyclohexane derivative according to claim 1, wherein --A-- represents 1,4-phenylene, l represents 1, m represents 1 and Z represents --CH 2 CH 2 --.
Claim 10
Dependent Claim
113 words
A liquid crystal composition comprising at least one liquid crystalline compound and at least one cyclohexane derivative expressed by the formula (I) ##STR16## wherein X represents a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group or a difluoromethoxy group, --A-- represents 1,4-cyclohexylene or 1,4-phenylene, --B-- represents 1,4-cyclohexylene, l represents 0, 1 or 2, m represents 0, 1 or 2, and l+m=1 or 2, Z represents --CH 2 CH 2 -- or a single bond, n represents an integer of 0 to 4, R represents a hydrogen atom or a linear alkyl group of 1 to 7 carbon atoms, and when R represents an alkyl group, the double bond has a trans-configuration; excluding 5-(4'-trans-(3",4",5"-trifluorophenyl)cyclohexyl)-2E-pentene.
Claim 11
Dependent Claim
113 words
A liquid crystal composition comprising at least one liquid crystalline compound and at least one cyclohexane derivative expressed by the formula (I) ##STR16## wherein X represents a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group or a difluoromethoxy group, --A-- represents 1,4-cyclohexylene or 1,4-phenylene, --B-- represents 1,4-cyclohexylene, l represents 0, 1 or 2, m represents 0, 1 or 2, and l+m=1 or 2, Z represents --CH 2 CH 2 -- or a single bond, n represents an integer of 0 to 4, R represents a hydrogen atom or a linear alkyl group of 1 to 7 carbon atoms, and when R represents an alkyl group, the double bond has a trans-configuration; excluding 5-(4'-trans-(3",4",5"-trifluorophenyl)cyclohexyl)-2E-pentene.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-01-16 | 1998-07-18 | 1999-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-16 | 2002-07-18 | 2003-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-16 | 2006-07-18 | 2007-01-17 | $7700.00 | Window Closed / Lapsed |