US4670182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nematic liquid crystalline composition
Assignee: DIC Corp
•
Filing: 1985-10-18
•
Granted: 1987-06-02
•
Expires: 2005-10-18
Abstract
Abstract A nematic liquid crystalline composition comprising (a) a compound represented by the general formula <IMAGE> wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and R' represents a linear alkyl group having 1 to 10 carbon atoms or a linear alkoxy group having 1 to 10 carbon atoms, (b) a compound represented by the general formula <IMAGE> wherein R is as defined, and R' represents a linear alkoxy group having 1 to 10 carbon atoms, (c) at least one compound selected from compounds represented by the general formula <IMAGE> wherein R is as defined, and X represents a hydrogen, fluorine or chlorine atom, and compounds represented by the general formula <IMAGE> wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and <IMAGE> +TR <IMAGE> and optionally a compound represented by the general formula <IMAGE> wherein R is as defined, and R' represents a linear alkoxy group having 1 to 10 carbon atoms.
Inventors
- 👤 Yutaka Fujita
- 👤 Kiyohumi Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:20
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/42; C09K19/46
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
A nematic liquid crystalline composition comprising (a) at least one compound represented by the general formala ##STR120## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and R' represents a linear alkyl group having 1 to 10 carbon atoms or a linear alkoxy group having 1 to 10 carbon atoms, (b) at least one compound represented by the general formula ##STR121## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, R' represents a linear alkoxy group having 1 to 10 carbon atoms, and (c) at least one compound selected from the group consisting of compounds represented by the general formula ##STR122## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and X represents a hydrogen, chlorine or fluorine atom, and compounds represented by the general formula ##STR123## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and ##STR124##
Claim 2
Dependent Claim
154 words
A nematic liquid crystalline composition comprising (a) at least one compound represented by the general formala ##STR120## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and R' represents a linear alkyl group having 1 to 10 carbon atoms or a linear alkoxy group having 1 to 10 carbon atoms, (b) at least one compound represented by the general formula ##STR121## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, R' represents a linear alkoxy group having 1 to 10 carbon atoms, and (c) at least one compound selected from the group consisting of compounds represented by the general formula ##STR122## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and X represents a hydrogen, chlorine or fluorine atom, and compounds represented by the general formula ##STR123## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and ##STR124##
Claim 3
Dependent Claim
192 words
A nematic liquid crystalline composition comprising (a) at least one compound represented by the general formula ##STR125## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and R' represents a linear alkyl group having 1 to 10 carbon atoms or a linear alkoxy group having 1 to 10 carbon atoms, (b) at least one compound represented by the general formula ##STR126## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and R' represents a linear alkoxy group having 1 to 10 carbon atom, (c) at least one compound represented by the general formula ##STR127## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and R' represents a linear alkoxy group having 1 to 10 carbon atoms, and (d) at least one compound selected from the group consisting of compounds represented by the general formula ##STR128## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and X represents a hydrogen, chlorine or fluorine atom, and compounds represented by the general formula ##STR129## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and ##STR130##
Claim 4
Dependent Claim
192 words
A nematic liquid crystalline composition comprising (a) at least one compound represented by the general formula ##STR125## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and R' represents a linear alkyl group having 1 to 10 carbon atoms or a linear alkoxy group having 1 to 10 carbon atoms, (b) at least one compound represented by the general formula ##STR126## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and R' represents a linear alkoxy group having 1 to 10 carbon atom, (c) at least one compound represented by the general formula ##STR127## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and R' represents a linear alkoxy group having 1 to 10 carbon atoms, and (d) at least one compound selected from the group consisting of compounds represented by the general formula ##STR128## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and X represents a hydrogen, chlorine or fluorine atom, and compounds represented by the general formula ##STR129## wherein R represents a linear alkyl group having 1 to 10 carbon atoms, and ##STR130##
Claim 5
Dependent Claim
105 words
The nematic liquid crystalline composition of claim 2 which comprises 15 to 40% of the at least one compound (a), 5 to 30% of the at least one compound (b), 5 to 40% of the at least one compound (c), 5 to 40% for the at least one compound (d), and from 0 to 20% by weight of at least one other nematic liquid crystalline compound selected from the group consisting of compounds of the general formula (6) to (15) ##STR131## wherein in each of formula (6) to (15) R and R' each represent a linear alkyl group having from 1 to 10 carbon atoms.
Claim 6
Dependent Claim
97 words
The nematic liquid crystalline composition of claim 1 which comprises from 10 to 45% of the at least one compound (a), from 20 to 55% by weight of the at least one compound (b), from 5 to 35% by weight of the at least one compound (c), and from 0 to 25% by weight of at least one other nematic liquid crystalline compound selected from compounds of general formulae (6) to (15) ##STR132## wherein in each of formulae (6) to (15) R and R' each represent a linear alkyl group having from 1 to 10 carbon atoms.
References Cited (Backward Citations)
US3925482A
Cited
US4253740A
Cited
DE2846409A1
Cited
US4372871A
Cited
US4588518A
Cited
US4391730A
Cited
GB2067586A
Cited
GB2092169A
Cited
US4556745A
Cited
US4551264A
Cited
GB2155465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |