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US 5,183,587 AGranted
Liquid crystalline compound
AssigneeChisso Corporation
InventorsKisei Kitano, Makoto Ushioda, Manabu Uchida, Toshiharu Suzuki
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AssigneeChisso Corporation
InventorsKisei Kitano, Makoto Ushioda, Manabu Uchida, Toshiharu Suzuki
Estimating the term…
A liquid crystal compound having a relatively low viscosity, a superior compatibility with other liquid crystalline compounds and suitable for preparing a liquid crystal device having a high response rate, and a superior liquid crystal composition containing the compound are provided, which compound is expressed by the formula ##STR1## wherein R.sup.1 is H, F, Cl, CN or 1-20C alkyl or alkenyl in which alkenyl one --CH.sub.2 -- group or two not adjacent --CH.sub.2 -- groups may be replaced by --O-- and in which alkenyl the position and number of the double bond may be optionally chosen; A.sup.1, A.sup.2 and A.sup.3 are ##STR2## the H atom(s) of which ##STR3## may be replaced by F, Cl or methyl; B.sup.1 and B.sup.2 are --CH.sub.2 CH.sub.2 --, --CH.sub.2 O--, --OCH.sub.2 -- or single bond; n is 0 or 1; and m is 0 to 20.
A compound expressed by the formula ##STR19## wherein R.sup.1 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, or an alkyl group or an alkenyl group each of 1 to 20 carbon atoms in which one --CH.sub.2 -- group or two non-adjacent --CH.sub.2 -- groups may be replaced by --O--, and in which alkenyl group the position and number of double bonds may be optionally chosen;
Dependencies are inferred from the claim text.