Optically active compounds and liquid crystal compositions conta

Details Optically active compounds and liquid crystal compositions conta Optically active compounds and liquid crystal compositions conta

1990-06-06

1992-07-07

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229963, 25229964, 25229965, 25229967, 560 62, 560 65, 560102, C09K 1912, C09K 1930, C09K 1920, C07C 6976

Patent

active

051280620

ABSTRACT:
An optically active compound of the formula: ##STR1## wherein R is alkyl or alkoxy, R* is an optically active alkyl group, X is alkyl or halogen, Y is a single bond ##STR2## and C* is an asymmetric carbon, is chemically stable and shows or induces large spontaneous polarization and is useful in a chiral liquid crystal composition.

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patent: 4886619 (1989-12-01), Janulis
patent: 4892675 (1990-01-01), Nohira et al.
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patent: 4943386 (1990-07-01), Takehara et al.
patent: 5059345 (1991-10-01), Kobayashi et al.
Goodby, J. W. et al., Helical Twist & Spontaneous Polarization Direction in Smectic Liquid Crystals, J. Am. Chem. Soc. 1986, 108, pp. 4736-4742.
Clark et al., Submicrosecond bistable electro-optic switching in liquid crystals, App. Phys. Lett. 36(11), pp. 899-901 (1980).

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