Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...
Patent
1992-03-26
1994-06-21
Stoll, Robert L.
Compositions
Liquid crystal compositions
Containing nonsteryl liquid crystalline compound of...
25229966, 549369, 359103, C09K 1934, C09K 1912, C07D31906, G02F 113
Patent
active
053226380
ABSTRACT:
Compounds of the formula ##STR1## wherein A.sup.1 denotes a single covalent bond and A.sup.2 denotes 1,4-phenylene or trans-1,4-cyclohexylene or A.sup.1 denotes trans-1,4-cyclohexylene and A.sup.2 denotes a single covalent bond; X.sup.1 signifies fluorine or chlorine; X.sup.2 represents fluorine or, when X.sup.1 signifies chlorine, also hydrogen or chlorine; and R.sup.1 signifies 1E-alkenyl with 2 to 12 carbon atoms,
their manufacture, liquid crystalline mixtures which contain such compounds and their use for electro-optical purposes.
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Schadt Martin
Villiger Alois
Gould George M.
Harris C.
Hoffmann-La Roche Inc.
Johnston George W.
Silverman Robert A.
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