Two-rings-containing phenyl ester compound and anti-ferroelectri

Details Two-rings-containing phenyl ester compound and anti-ferroelectri Two-rings-containing phenyl ester compound and anti-ferroelectri

1995-12-19

1997-08-26

Kelly, C. H.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

C09K 1920

Patent

active

056607628

ABSTRACT:
A two-rings-containing phenyl ester compound of the following general formula (1), ##STR1## wherein R.sup.1 is a linear alkyl group having 5 to 12 carbon atoms, R.sup.2 is a linear alkyl group having 1 to 15 carbon atoms, X.sup.1 and X.sup.2 are both hydrogen atoms or one of X.sup.1 and X.sup.2 is a fluorine atom and the other is a hydrogen atom, Y.sup.1 and Y.sup.2 are both hydrogen atoms or one of Y.sup.1 and Y.sup.2 is a fluorine atom and the other is a hydrogen atom, and A.sup.1 is a hydrogen atom, --CH.sub.3 or --CF.sub.3, provided that when A.sup.1 is a hydrogen atom or --CH.sub.3, p is 0 and that when A.sup.1 is --CF.sub.3, p is t and q is an integer of 5 to 8, and an anti-ferroelectric liquid crystal composition containing at least one of two-rings-containing phenyl ester compounds of the above general formula (1) in claim 1 and either an anti-ferroelectric liquid crystal compound or a mixture of anti-ferroelectric liquid crystal compounds.

REFERENCES:
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Chandani, et al., Antiferroelectric Chiral Smectic Phases. . . , Japanese Journal of Applied Physics, vol. 28, No. 7, Jul., 1989, pp. 1265-1268.
Chandani, et al., Novel Phases Exhibiting Tristable Switching. . . , Japanese Journal of Applied Physics, vol. 28 , No. 7, Jul., 1989 pp. 1261-1264.
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Johno, et al., Correspondance between Smectic Layer Switching. . . , Japanese Journal of Applied Physics, vol. 29, No. 1, Jan., 1990 pp. 111-114.
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