Claims
- 1. An optically active compound expressed by the formula ##STR111## wherein one of R.sup.1 and R.sup.2 represents a straight chain alkyl or alkoxy group of 1 to 20 carbon atoms and the other represents an optically active 2-alkoxypropoxy, 2-alkanoyloxypropoxy, 2-alkoxypropionyloxypropoxy, 2-fluoroalkoxy, alkanoyloxy or alkoxypropionyloxy group.
- 2. A chiral nematic liquid crystal composition comprising at least two components at least one of which is an optically active compound according to claim 1.
- 3. An optically active compound according to claim 1, wherein the optically active group is an optically active 2-alkoxypropoxy group.
- 4. An optically active compound according to claim 1 wherein said optically active group is of the structure
- --OCH.sub.2 --CH(CH.sub.3)--OC(O)R.sup.3
- in which R.sup.3 is a straight chain alkyl group of 3 to 10 carbon atoms.
- 5. An optically active compound according to claim 4 wherein R.sup.2 is an optically active group as defined.
- 6. An optically active compound according to claim 1, wherein said optically active group is of the structure
- --OCH.sub.2 --CH(CH.sub.3)--OC(O)R.sup.4
- in which R.sup.4 is an optically active alkyl group with one methyl branching.
- 7. An optically active compound according to claim 6, wherein R.sup.2 is an optically active group as defined in claim 6.
- 8. An optically active compound according to claim 1, wherein said optically active group is of the structure
- --OCH.sub.2 --CH(CH.sub.3)--OC(O)--CH(CH.sub.3)--OR.sup.5
- in which R.sup.5 is an alkyl group of 3 to 10 carbon atoms.
- 9. An optically active compound according to claim 8, wherein R.sup.2 is an optically active group as defined in claim 8.
- 10. An optically active compound according to claim 1, wherein said optically active group is of the structure
- --OC(O)--CH(CH.sub.3)--OR.sup.7
- in which R.sup.7 is an alkyl group of 4 to 7 carbon atoms.
- 11. An optically active compound according to claim 1, wherein said optically active group is of the structure
- --OCH.sub.2 --CH(F)--R.sup.6
- in which R.sup.6 is a straight chain alkyl of 5 to 7 carbon atoms.
- 12. A chiral nematic liquid crystal composition comprising at least two components at least one of which is an optically active compound, in which said optically active compound is a compound as defined in claim 4.
Priority Claims (2)
Number |
Date |
Country |
Kind |
62-103977 |
Apr 1987 |
JPX |
|
62-264964 |
Oct 1987 |
JPX |
|
Parent Case Info
This application is a continuation of now abandoned application Ser. No. 07/186,081 filed on Apr. 25, 1988.
US Referenced Citations (10)
Foreign Referenced Citations (11)
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Country |
206228 |
Dec 1986 |
EPX |
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Jun 1987 |
EPX |
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Dec 1987 |
EPX |
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May 1988 |
EPX |
3515373 |
Nov 1986 |
DEX |
240385 |
Oct 1986 |
DDX |
240386 |
Oct 1986 |
DDX |
63-22042 |
Jan 1988 |
JPX |
63-183983 |
Jul 1988 |
JPX |
8705012 |
Aug 1987 |
WOX |
8705018 |
Aug 1987 |
WOX |
Non-Patent Literature Citations (1)
Entry |
Sato, S., et al., SID International Display Research Conference, pp. 107-110 (Oct. 4-6, 1988). |
Continuations (1)
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Number |
Date |
Country |
Parent |
186081 |
Apr 1988 |
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