Lactic acid derivative, liquid crystal composition containing same and liquid crystal device
AssigneeCanon Kabushiki Kaisha
InventorsKazuo Yoshinaga, Kazuharu Katagiri
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Abstract
An optically active lactic acid derivative represented by the following formula (I): ##STR1## wherein R is a saturated or unsaturated hydrocarbon group of a linear, branched or cyclic structure having 4 to 20 carbon atoms; Ra is --CO--Rb or --CH.sub.2 --Rc wherein Rb is a releasable chemically active group, and Rc is a releasable chemically active group; and C with * represents an asymmetric carbon atom.
Claims31
An optically active lactic acid derivative represented by the formula ##STR87## wherein R.sub.1 is an alkyl or alkoxy group having 1 to 20 carbon atoms, R.sub.A is an alkyl group having 1 to 20 carbon atoms, n is 0 or 1, and C with * is an asymmetric carbon atom.
A liquid crystal device comprising a pair of base plates and a liquid crystal material having a smectic phase and a higher temperature phase;
- said liquid crystal material comprising a mesomorphic, optically active lactic acid derivative represented by the formula ##STR90## wherein R.sub.1 is an alkyl or alkoxy group having 1 to 20 carbon atoms, R.sub.A is an alkyl group having 1 to 20 carbon atoms, n is 0 or 1, and C with * is an asymmetric carbon atom.
Dependencies are inferred from the claim text.