| abstract |
PURPOSE:The titled molded article useful as magnetic tapes, etc., having high strength, high elasticity and improved dimensional stability, by melting a liquid crystal polyester obtained by copolymerization of an optically active monomer in a specific temperature range, molding it into a sheet, etc., and quenching it. CONSTITUTION:(A) A nematic or smetic liquid crystal polyester is copolymerized with (B) 1-10mol% bifunctional optically active monomer [e.g., (R) or (S) 3-methyladipic acid, etc.; when it is a blend, difference in content of both components is >=15%], formed into liquid crystal in a liquid crystal-forming temperature range (e.g., 150-350 deg.C), molded by extrusion molding, etc., into a film or sheet having <=100mum, thickness which is quenched to <= the melting point of the polymer, to give the aimed molded article. |