LIQUID CRYSTALLINE POLYESTERS FOR OPTICAL DATA STORAGE.

摘要

The invention comprises liquid crystalline polyesters suited to be used as a medium for optical data storage, especially reversible (erasable) optical data storage. The polyesters are based on an aliphatic dicarboxylic acid or a derivative thereof and propane diol which on C2 bears a mesogenic substituent comprising two rings, either alicyclic or aromatic. Preferably also the dicarboxylic acid or derivative thereof is mesogenically substituted. The invention also comprises a medium for optical data storage containing polyesters of the above type.