| 摘要 |
<p>A novel liquid crystal compound has a formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="9" wi="46" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>where:
<Chemistry id="chema02" num="0002"><Image id="ia02" he="6" wi="12" file="IMGA0002.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry><UnorderedLists id="ula01" listStyle="none"><ListItem>is a trans-2,5-disubstituted-1,3-dioxan ring or a 2,5- disubstituted-1,3-pyrimidine ring
<Chemistry id="chema03" num="0003"><Image id="ia03" he="6" wi="11" file="IMGA0003.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry></ListItem><ListItem>is a 1,4-disubstituted benzene ring optionally containing one or more F, Cl or CH<Sub>3</Sub> groups as lateral substituents; R<Sub>1</Sub> is an alkyl group; and</ListItem><ListItem>X is a terminal group selected from H, CN, Cl, F and R<Sub>2</Sub> where R<Sub>2</Sub> is selected from alkyl R<Sub>3</Sub>, alkoxy OR<Sub>3</Sub>, alkylcarbonyloxy OCOR<Sub>3</Sub> and alkoxycarbonyloxy OCOOR<Sub>3</Sub>.</ListItem></UnorderedLists></p> |
