Optically active compound, liquid crystal composition containing

Details Optically active compound, liquid crystal composition containing Optically active compound, liquid crystal composition containing

1993-07-14

2000-07-25

Kelly, C. H.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

568630, 349 18, 544298, C09K 1934, G02F 1133, C07C 4100, C07D23902

Patent

active

060933453

ABSTRACT:
An optically active compound represented by formula (I): wherein A represents ##STR1## wherein R.sup.2 represents an alkyl group having from 8 to 12 carbon atoms; R.sup.1 represents a straight chain alkyl group having from 2 to 5 carbon atoms; X represents a fluorine atom or a methyl group; n represents 1 or 2; m represents an integer of from 0 to 3; and C* represents an asymmetric carbon atom, and a liquid crystal composition containing the same are disclosed. The compound exhibits large spontaneous polarization and low viscosity and, when added to an achiral base liquid crystal composition, induces a chiral nematic phase in which the helical pitch has small temperature dependence.

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