Optically active compound, liquid crystal composition, liquid cr

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

1992-02-12

1994-01-25

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229966, 25229967, 544242, 544298, 544335, 359103, 359104, C09K 1934, C09K 1920, C07D23902, G02F 113

Patent

active

052813622

ABSTRACT:
An optically active compound represented by the following formula (I): ##STR1## wherein R.sub.1 denotes an alkyl or alkoxy group having 1-18 carbon atoms; R.sub.2 denotes an alkyl group having 1-12 carbon atoms; A denotes ##STR2## X denotes and C* denotes an optically active asymmetric carbon atom. The optically active compound, when included as a component, provides a ferroelectric liquid crystal composition or device showing an improved electro-field response characteristic.

REFERENCES:
patent: 4367924 (1983-01-01), Clark et al.
patent: 4917817 (1990-04-01), Nohira et al.
patent: 4918213 (1990-04-01), Nohira et al.
patent: 5073306 (1991-12-01), Nohira et al.
Applied Physics Letters, vol. 18, No. 4 (1971) 127-28.

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