Ferroelectric chiral smectic liquid crystal composition and liqu

Details Ferroelectric chiral smectic liquid crystal composition and liqu Ferroelectric chiral smectic liquid crystal composition and liqu

1989-06-23

1993-10-05

Lovering, Richard D.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

359103, C09K 1934, G02F 113

Patent

active

052502171

ABSTRACT:
A ferroelectric chiral smectic liquid crystal composition, comprising at least one compound represented by the following formula (I): ##STR1## wherein R.sub.1 denotes a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent; R.sub.2 denotes a linear or branched alkyl group having 1-14 carbon atoms capable of having a substituent; X.sub.1 and X.sub.2 respectively denote a single bond, --O--, ##STR2## m is 0-7; and n is 0 or 1; and at least one compound represented by the following formula (II): ##STR3## wherein R.sub.3 and R.sub.4 respectively denote a linear alkyl group having 1-18 carbon atoms and one --CH.sub.2 -- not bonded to X.sub.4 in the alkyl group can be replaced with --O--; X.sub.3 and X.sub.4 respectively denote a single bond, --O--, ##STR4## and p and q are respectively 0, 1 or 2 with proviso that both of p and q are not 0.

REFERENCES:
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patent: 4783280 (1988-11-01), Petrzilka et al.
patent: 4834904 (1989-05-01), Krause et al.
patent: 4874544 (1989-10-01), Yong et al.
patent: 4882083 (1989-11-01), Terashima et al.
patent: 4911863 (1990-03-01), Sage et al.
patent: 4952699 (1990-08-01), Yong et al.

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