1,3-dioxane derivatives and composition including same
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United States of America Patent
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Jun 25, 1991
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N/A
app pub date -
Mar 20, 1990
filing date -
Apr 28, 1989
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Expired
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Abstract
2-(3', 4'-difluorophenyl)-1,3-dioxane derivatives represented by the general formula: ##STR1## wherein R is a linear alkyl group having from 1 to 8 atoms, and having large positive dielectric constant anisotropy (.DELTA..epsilon.) and small refractive index anisotropy (.DELTA.n). The dioxane derivatives may be included in liquid crystal compositions for improved display devices having a low threshold voltage, a low driving voltage and a wide visual angle.
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