Mesomorphic compound, liquid crystal composition, liquid crystal

Details Mesomorphic compound, liquid crystal composition, liquid crystal Mesomorphic compound, liquid crystal composition, liquid crystal

1991-04-30

1993-05-25

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229962, 25229901, 548136, 548142, 548108, 568326, 585 26, 359104, C09K 1934, C09K 1932, C07D28512, C07C 49115

Patent

active

052137090

ABSTRACT:
A mesomorphic compound represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 respectively denote an alkyl group having 1-16 carbon atoms optionally substituted; X.sub.1 and X.sub.3 respectively denote a single bond, --O--, ##STR2## X.sub.2 denotes a single bond, ##STR3## A.sub.1 denotes a single bond ##STR4## A.sub.3 denotes ##STR5## A.sub.2 denotes 9, 10-dihydro-2,7-phenanthrenediyl, 2,7-fluorenediyl or 2,7-fluorenonediyl; n is 0 or 1; and X.sub.4 and X.sub.5 respectively denote hydrogen, F, Cl, Br, --CH.sub.3, --CN or --CF.sub.3, with proviso that X.sub.1 is a single bond when A.sub.1 is a single bond.

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