Synthesis of aromatic poly(ether ketone)s having adhesion property to steel surface

Abstract

Aromatic copoly(ether ketone)s composed of 5′-(2′-methoxyphenylen)oxy-4-phenylenecarbonyl and 4″-phenylenoxy-4′-phenylenoxy-4-phenylenecarbonyl units were successfully synthesized via P 2O 5-MsOH-mediated direct polycondensation of the corresponding carboxylic acids, i.e., 4-(2-methoxyphenoxy)benzoic acid and 4-(4-phenoxyphenoxy)benzoic acid. The aromatic copoly(ether ketone)s bearing methoxy groups thus obtained have prominent adhesion property to steel surface with good thermal stability and high glass transition temperature.