Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...
Patent
1990-12-27
1992-05-05
Stoll, Robert L.
Compositions
Liquid crystal compositions
Containing nonsteryl liquid crystalline compound of...
25229967, 25229961, 25229962, 25229963, 560 64, 560 65, 560 83, C09K 1912, C09K 1934, C09K 1920
Patent
active
051104989
ABSTRACT:
A liquid crystal compound represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having from 3 to 18 carbon atoms or an aralkyl group having from 7 to 18 carbon atoms; R.sub.2 represents an alkenyl group having from 1 to 18 (preferably from 3 to 14) carbon atoms; R.sub.3 represents CF.sub.3 or C.sub.2 F.sub.5 ; X represents a single bond, --O--, --COO--, or --OCO--; Y represents --COO--, --OCO--, --CH.sub.2 O--, or --OCH.sub.2 --; A and B each represents a cyclic group; and * indicates an optically active center.
The compound of formula (I) exhibits three stable states of molecular orientation.
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Sakuma Shigenori
Suzuki Yoshiichi
Yamakawa Noriko
Harris C.
Showa Shell Sekiyu K.K.
Stoll Robert L.
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