abstract |
A liquid crystal compound of the formula:wherein R<sup>1</sup> and R<sup>2</sup> represent C<sub>1-18</sub> alkyl group, alkyl halide group or aralkyl halide, R<sup>1</sup> may be the same as or different from R<sup>2</sup>, X is selected from -COOCH<sub>2</sub>- or -OCO-. |