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

1989-07-12

1993-02-02

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 25229963, 25229966, C09K 1934, C09K 1952

Patent

active

051835860

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 or branched alkyl group having 1-18 carbon atoms capable of having a substituent; X.sub.3 and X.sub.4 respectively denote a single bond, --O--, ##STR4## Y.sub.1 denotes --CH.sub.2 O-- or --OCH.sub.2 --; and p and q are respectively 1 or 2.

REFERENCES:
patent: 4708441 (1987-11-01), Petrzilka et al.
patent: 4874544 (1989-10-01), Yong et al.
patent: 4911863 (1990-03-01), Sage et al.
patent: 4952699 (1990-08-01), Yong et al.
Patent Abstracts of Japan, vol. 13, No. 61 (Feb. 1989) 63-254182.

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