Basic properties of poly (arylene ether ketone) s based on 1,1-dichloro-2,2-di (3,5-dibromo-4-hydroxyphenyl) ethylene were synthesized and studied. Polyarylene ether ketones were obtained on the basis of 1,1-dichloro-2,2-di (3,5-dibromo-4-hydroxyphenyl) ethylene with increased heat - thermal and fire resistance of structural and film purposes.