Polyaryl ethers are a well known class of engineering thermoplastics. The aromatic portion of the poly (arylene ether) is believed to contribute to thermal stability and good mechanical properties of the polymer and the ether linkages are considered to facilitate polymer processing while maintaining oxidative and thermal stability. Many kinds of poly (arylene ethers) have been prepared via nucleophilic aromatic substitution polymerization,[1–3] and sulfone-containing poly (arylene ethers) such as UdelTM (Amoco) or ketone functional
L. V. Rao, Dr. Akanksha Saxena Pandit, and Ninan, K. N., “POLY(ARYLENE ETHER NITRILES)”, Journal of Macromolecular Science, Part C, vol. 42, pp. 513-540, 2002.