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US 4,576,732 AGranted
Ferroelectric liquid crystal compounds and liquid crystal compositions
AssigneeHitachi, Ltd.
InventorsMasato Isogai, Shintaroo Hattori, Kishiroo Iwasaki, Teruo Kitamura, Akio Mukoh, Takashi Inukai, Kenji Furukawa, Kanetsugu Terashima, Shinichi Saitoh
Life of this patent
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Abstract
The present invention is characterized by a smectic liquid crystal compound represented by the following formula: ##STR1## wherein R is selected from alkyl and alkoxy groups; X from ##STR2## m and n are natural numbers; and R* is an optically active group containing an asymmetric carbon atom, and a liquid crystal composition containing said compound as a component. This compound is excellent in optical stability and high-speed response.
Claims12
A ferroelectric liquid crystal compound selected from the group consisting of:
- 4-n-heptyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-pentyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-hexyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-octyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-nonyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-decyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-undecyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-dodecyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-hexyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-heptyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-octyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-nonyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-decyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-undecyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-dodecyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- p-n-pentyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-hexyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-heptyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-octyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-nonyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-decyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-undecyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-dodecyloxybenzoic acid 4'-(2-methylvbutoxycarbonyl)-4-biphenylyl ester,
- p-n-hexylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-heptylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-nonylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-decylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-undecylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-dodecylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- ' -n-decyloxy-4-biphenylyl S-p-(2-methylbutoxycarbonyl)benzoate,
- p-n-octyloxybenzyl S-4'-(2-methylbutoxycarbonyl)-4-biphenylyl ether, and
- 4'-n-octyloxy-4-biphenylyl S-p-(2-methylbutoxycarbonyl)benzyl ether.
29 more elements
A ferroelectric liquid crystal composition containing as components thereof a mixture of a plurality of ferroelectric liquid crystal compounds, said ferroelectric liquid crystal compounds comprising at least one compound from the group consisting of:
- 4-n-heptyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-pentyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-hexyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-octyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-nonyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-decyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-undecyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-dodecyloxy-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-hexyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-heptyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-octyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester, P0 4-n-nonyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-decyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-undecyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- 4-n-dodecyl-4'-biphenylcarboxylic acid p'-(2-methylbutoxycarbonyl)phenyl ester,
- p-n-pentyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-hexyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-heptyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-octyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-nonyloxybenzoic acid 4'(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-decyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-undecyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-dodecyloxybenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-hexylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-heptylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-nonylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-decylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-undecylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- p-n-dodecylbenzoic acid 4'-(2-methylbutoxycarbonyl)-4-biphenylyl ester,
- ' -n-decyloxy-4-biphenylyl S-p-(2-methylbutoxycarbonyl)benzoate,
- p-n-octyloxybenzyl S-4'-(2-methylbutoxycarbonyl)-4-biphenylyl ether, and
- 4'-n-octyloxy-4-biphenylyl S-p-(2-methylbutoxycarbonyl)benzyl ether.
28 more elements
Dependencies are inferred from the claim text.