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US5032313A
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Trifluorobenzene derivative and liquid crystal composition containing the same
Assignee: JNC Corp
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Filing: 1990-03-07
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Granted: 1991-07-16
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Expires: 2010-03-07
Abstract
Abstract Trifluorobenzene derivatives having good stability and a large positive dielectric anisotropy value and which may be used in liquid crystal compositions, have the formula: <CHEM> wherein R represents an alkyl group of 1 to 10 carbon atoms in which one -CH2- group or two non-adjacent -CH2- groups may be replaced by an oxygen atom and/or a -CO- group and/or a -COO- group and/or a -CH=CH- group; -A- and -B- each represent a 1,4-cyclohexylene, 1,4-phenylene, pyrimidine-2,5-diyl or 1,3-dioxane-2,5-diyl group; 1 represents 0, 1 or 2; m represents 0, 1 or 2 and 1+m>/=1; and Z<1> and Z<2> are the same or different and each represents a group -COO-, -CH2CH2-, -OCH2-, -CH2- or -CH=CH-, or a single bond.
Inventors
- 👤 Yasuyuki Goto
- 👤 Kisei Kitano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:26
CPC Classifications
C; C07; C07C; C07C25/00; C07C25/18; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/16; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/12; C09K19/30; C09K19/3001; C09K19/3003; C09K19/3028; C09K19/3066; C09K19/3068; C09K19/34; C09K19/3402; C09K19/3441; C09K19/345; C09K19/3458; C09K2019/3422
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
69 words
A trifluorobenzene derivative expressed by the formula ##STR14## wherein R represents an alkyl group of 1 to 10 carbon atoms, --A-- and --B-- each represent 1,4-cyclohexylene or 1,4-phenylene, l represents 1 or 2, m represents 0, 1 or 2 and l+m≦3, and Z 1 and Z 2 each represent --CH 2 CH 2 -- or a single bond, and when m is 0, Z 2 is a single bond.
Claim 2
Dependent Claim
69 words
A trifluorobenzene derivative expressed by the formula ##STR14## wherein R represents an alkyl group of 1 to 10 carbon atoms, --A-- and --B-- each represent 1,4-cyclohexylene or 1,4-phenylene, l represents 1 or 2, m represents 0, 1 or 2 and l+m≦3, and Z 1 and Z 2 each represent --CH 2 CH 2 -- or a single bond, and when m is 0, Z 2 is a single bond.
Claim 3
Dependent Claim
12 words
A trifluorobenzene derivative according to claim 1, expressed by the formula ##STR15##
Claim 4
Dependent Claim
12 words
A trifluorobenzene derivative according to claim 1, expressed by the formula ##STR16##
Claim 5
Dependent Claim
12 words
A trifluorobenzene derivative according to claim 1, expressed by the formula ##STR17##
Claim 6
Dependent Claim
12 words
A trifluorobenzene derivative according to claim 1, expressed by the formula ##STR18##
Claim 7
Dependent Claim
12 words
A trifluorobenzene derivative according to claim 1, expressed by the formula ##STR19##
Claim 8
Dependent Claim
12 words
A trifluorobenzene derivative according to claim 1, expressed by the formula ##STR20##
Claim 9
Dependent Claim
12 words
A trifluorobenzene derivative according to claim 1, expressed by the formula ##STR21##
Claim 10
Dependent Claim
12 words
A trifluorobenzene derivative according to claim 1, expressed by the formula ##STR22##
Claim 11
Dependent Claim
46 words
A liquid crystal composition comprising at least two components at least one of which is a trifluorobenzene derivative as set forth in claim 1, the content of which derivative is in the range of 2 to 40% by weight based on the weight of said composition.
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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) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |