| abstract |
A poly(arylene ether ketone) mainly comprising repeating units represented by general formula (I), wherein Ar1 represents a 1,5-, 2,6- or 2,7-naphthalene ring or a combination thereof, and Ar2 represents a p-phenylene, p,p'-biphenylene, or 1,5-, 2,6- or 2,7-naphthalene ring or a combination thereof. This polymer has a high secondary transition point and excellent solvent resistance and moldability, and can be molded into, for example, heat-resistant fiber and electrical insulation film. |