Lactic acid derivative, liquid crystal composition containing same and liquid crystal device
AssigneeCanon Kabushiki Kaisha
InventorsKazuo Yoshinaga, Kazuharu Katagiri, Kenji Shinjo
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Abstract
An optically active lactic acid derivative represented by the following formula (Ia) or (Ib): ##STR1## wherein R is a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 1-16 carbon atoms, R.sup.1 is an alkyl group having 4-16 carbon atoms, m and n are respectively 1 or 2, k is 0 or 1, and C* is an asymmetric carbon atom. A liquid crystal composition containing the lactic acid derivative and a liquid crystal device using the liquid crystal composition are also disclosed.
Claims31
An optically active lactic acid derivative represented by the formula (Ib):
- ##STR15## wherein R.sup.1 is an alkyl group having 4-16 carbon atoms, R is a linear alkyl group having 1-16 carbon atoms, m and n are 1 or 2 such that m+n=2 or 3, k is 0 or 1, and C* is an asymmetric carbon atom.
A liquid crystal composition comprising a mixture of a liquid crystal and at least one species of optically active lactic acid derivative represented by the formula (Ib):
- ##STR21## wherein R.sup.1 is an alkyl group having 4-16 carbon atoms, R is a linear alkyl group having 1-16 carbon atoms, m and n are 1 or 2 such that m+n=2 or 3, k is 0 or 1, and C* is an asymmetric carbon atom.
A liquid crystal device comprising a pair of base plates an a liquid crystal composition disposed between the base plates;
- said liquid crystal composition comprising a mixture of a liquid crystal and at least one species of lactic acid derivative represented by the formula (Ib):
- ##STR22## wherein R.sup.1 is an alkyl having 4-16 carbon atoms, R is a linear alkyl group having 1-16 carbon atoms, m and n are 1or 2 such that m+m=2 or 3, k is 0 or 1, and C* is an asymmetric carbon atom.
Dependencies are inferred from the claim text.