MAIN CHAIN TYPE LIQUID CRYSTAL POLYESTER LIQUID CRYSTALLINE COMPOSITION METHOD FOR PRODUCING LIQUID CRYSTAL FILM OPTICAL FILM AND DISPLAY

摘要

Provided is a main chain type liquid crystal polyester which comprises at least two units selected from an aromatic diol unit, an aromatic dicarboxylic acid unit, and an aromatic hydroxycarboxylic acid unit as essential units and a structural unit having a cationically polymerizable unit in at least one of the terminal ends. The main chain type liquid crystalline polyester, when used as an optical material, is excellent in the capability of retaining a liquid crystal orientation having been aligned and fixed under practical service conditions and exhibits an excellent mechanical strength.