| 摘要 |
<p>Chiral smectic C liquid crystalline polyester consisting essentially of structural units (A), (B) and (C) of the following formulae: <CHEM> which is optically active and wherein R represents an alkyl group having 1 to 3 carbon atoms, and (C)-O @CH2@@O- 0 to 59 molar % wherein n represents an integer of 2 to 10, and optical filter comprising the polyester.</p> |
