SYNTHESIS AND PHYSICAL-PROPERTIES OF SOLUBLE, AMORPHOUS POLY(ETHER KETONE)S CONTAINING THE ORTHO-DIBENZOYLBENZENE MOIETY

The synthesis of novel fluoro monomers 4, 7a, and 10 containing the 1,2-dibenzoylbenzene moiety is described. The three monomers were isolated in very high yields. These fluoro monomers undergo reactions with bisphenols in the presence of excess anhydrous potassium carbonate in an aprotic solvent (N,N-dimethylacetamide) to give high molecular weight amorphous poly(aryl ether ketone)s which are very soluble in solvents such as chloroform and toluene at room temperature, have glass transition temperatures ranging from 160 to 313-degrees-C, and are easily cast into flexible, colorless and transparent films. The 5% weight losses by thermogravimetric analysis for these materials were all above 500-degrees-C.