Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...
Patent
1989-03-09
1990-05-15
Gron, Teddy S.
Compositions
Liquid crystal compositions
Containing nonsteryl liquid crystalline compound of...
2522995, 2522996, 25229963, 25229964, 25229965, 25229966, 350350R, 350350S, 558414, 558416, 558423, 558425, 544224, 544238, 544295, 544296, 544298, 544316, 544333, 544335, 544336, 544406, 544408, 544410, 546256, 546261, 546263, 546264, 546268, 546278, 546280, 546298, 546300, 546326, 546330, 549 21, 549 22, 549 28, 549 13, 549 14, 549357, 549370, 549372, 549373, 549378, 549415, 549419, 549425, 549426, 549427, G02F 113, C09K 1930, C09K 1934, C09K 1920, C07C12175, C07D31900, C07D23934
Patent
active
049255908
ABSTRACT:
Derivatives of 4-cyano-2,3-difluorophenol of the formula I ##STR1## wherein R.sup.1 is an alkyl group which has 1-12 C atoms and in which one or two CH.sub.2 groups can also be replaced by --O--, --CO--, --CO--O-- and/or --CH.dbd.CH--, no two 0 atoms being directly attached to one another,
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patent: 4820839 (1989-04-01), Krause et al.
patent: 4834904 (1989-05-01), Krause et al.
Finkenzeller Ulrich
Krause Joachim
Reiffenrath Volker
Wachtler Andreas
Weber Georg
Gron Teddy S.
Merck Patent Gesellschaft mit beschrankter Haftung
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