Thermotropic aromatic polyesters having high mechanical properties and good processability, a process for their preparation, and their use for the production of mouldings, filaments, fibres and films

摘要

Fully aromatic polyesters which contain 3-phenyl-4,4'- dihydroxybenzophenone radicals and/or 3-phenyl-3',4-dihydroxybenzophenone radicals as condensed units possess high mechanical properties but can still be processed without difficulties by a thermolastic method.