Nematic liquid crystal composition
AssigneesDainippon Ink and Chemicals, Inc., Kawamura Institute of Chemical Research
InventorsYoshi Arai, Kazuo Kimura, Hisato Sato, Takasi Yamaki, Katsuhiko Morita, Masanao Ohzeki, Haruyoshi Takatsu, Yutaka Fujita, Masayuki Tazume
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Abstract
A nematic liquid crystal composition comprising (I) 4-n-valeryloxy-4'-cyanobiphenyl, (II) 4-n-caproyloxy-4'-cyanobiphenyl and (III) 4'-cyanophenyl-4-n-heptylbenzoate, and either (IV) 4'-cyanophenyl-4-n-butylbenzoate or (V) 4'-cyanophenyl-4-n-nonylbenzoate, said composition having a crystal-nematic transition temperature of -40.degree. to -20.degree. C and a nematic-isotropic transition temperature of 50.degree. to 65.degree. C.
Claims2
A nematic liquid crystal composition comprising 5 to 70 mole% of (I) 4-n-valeryloxy-4'-cyanobiphenyl, 5 to 40 mole% of (II) 4-n-caproyloxy-4'-cyanobiphenyl, 5 to 60 mole% of (III) 4'-cyanophenyl-4-n-heptylbenzoate, and 5 to 45 mole% of (IV)4'-cyanophenyl-4-n-butylbenzoate.
A nematic liquid crystal composition comprising 20 to 45 mole% of (I) 4-n-valeryloxy-4'-cyanobiphenyl, 5 to 30 mole% of (II) 4-n-caproyloxy-4'-cyanobiphenyl, 20 to 45 mole% of (III) 4'-cyanophenyl-4-n-heptylbenzoate, and 5 to 30 mole% of (V) 4'-cyanophenyl-4-n-nonylbenzoate.
Dependencies are inferred from the claim text.