.alpha.-substituted-propionic acid esters

Details .alpha.-substituted-propionic acid esters .alpha.-substituted-propionic acid esters

1989-09-18

1991-10-08

Maples, John B.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 546342, 546301, 359104, 359106, C09K 1934

Patent

active

050552228

ABSTRACT:
An optically active compound exhibiting high speed response properties when used as a component of liquid crystal materials used in a liquid crystal display mode utilizing ferroelectricity, and a liquid crystal composition containing the compound are provided, which compound is expressed by the formula ##STR1## wherein R.sup.1 represents alkyl, alkoxy or alkoxycarbonyl each of 2 to 18 C, R.sup.2 represents alkyl of 3 to 18 C or alkoxy of 1 to 18 C and A represents a member selected from a group of two directly bonded six-membered rings having a halogen atom, cyano group, methyl group or trifluoromethyl group attached thereonto and * represents an unsymmetric carbon atom.

REFERENCES:
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patent: 4695651 (1987-09-01), Higuchi et al.
patent: 4723018 (1988-02-01), Shinozaki et al.
patent: 4725688 (1988-02-01), Taguchi et al.
patent: 4732699 (1988-03-01), Higuchi et al.
patent: 4744918 (1988-05-01), Heppke et al.
patent: 4775223 (1988-10-01), Yoshinaga et al.
patent: 4834904 (1989-05-01), Krause et al.
patent: 4876026 (1989-10-01), Saito et al.
Goodby et al., Liquid Crystals & Ordered Fluids, vol. 4, pp. 1-32 (1984).

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