Liquid crystal compositions containing cyanocinnamic acid esters
AssigneeDai Nippon Toryo Co., Ltd.
InventorsToshio Jinnai, Goro Matusmoto, Kazuhito Iwasaki
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Abstract
Liquid crystalline p-cyanocinnamic acid p'-n-alkoxyphenyl esters, and nematic liquid crystal compositions containing the same, useful for electro-optical devices, are described.
Claims6
A nematic liquid crystal composition comprising at least two cinnamic acid esters of the formula ##STR11## wherein R.sub.1 is straight-chain alkyl of 4 to 8 carbon atoms.
A nematic liquid crystal composition comprising at least one cinnamic acid ester of the formula ##STR12## wherein R.sub.1 is straight-chain alkyl of 4 to 8 carbon atoms, and at least one cinnamic acid ester of at least one of the formulae ##STR13## wherein R.sub.2 is straight-chain alkyl of 3 to 8 carbon atoms.
Dependencies are inferred from the claim text.