Polyarylates (polyesters from aromatic dicarboxylic acids and bisphenols)

After a short review on the literature of aromatic polyarylates synthesis the following aspects are described: preparation of some monomers; preparation of the polymers by different chemical processing routes; physical properties; moulding behaviour. Amorphous polymers are especially considered. Figures on continuous melt condensation via the diphenylester route are given. Some polyarylates have attractive mechanical and electrical properties. Injection moulding is only possible if the glass temperature is not too high (≤200°C), and even with these polymers thermal decomposition during injection moulding is a limiting factor for their technical use. The weak point is the ester group. Extrusion, pressing, and solution casting are technically feasable.