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The compounds 2,phenyl]propane and 2,2-bis[4-(4-fluorobenzoyl)phenyljhexafluoropropane were synthesized, and each was polymerized with Bisphenol A or Bisphenol AF (155 °C for 3-6 h in , -dimethylacetamide (DMAc)) to give an homologous series of four, thermally stable, aromatic poly(ether ketones) in yields greater than 90%. Incorporation of hexafluoroisopropylidene (6F) and/or isopropylidene (6H) groups in the poly(ether ketone) backbone greatly enhanced the solubility of these polymers (compared to Victrex PEEK) in common organic solvents. Thermal stabilities by TGA for the polymer series ranged from 485 to 553 °C in air at the point of 10% weight loss. Glass transition temperatures (Tg) ranged from 169 to 180 °C by DSC. The synthesis and characterization of poly(ether ketones) containing 6F and 6H groups in the backbone are reported along with a study of the effect that replacing the 6H group with the 6F group has on the properties of the polymers.

SYNOPSISA series of fluorinated aromatic polyethers was synthesized via aromatic nucleophilic substitution of highly fluorinated aromatics ( 1,2,4,5-tetrafluorobenzene, hexafluorobenzene, and decafluorobiphenyl) with bisphenol AF or bisphenol A. Polymerization with 1,2,4,5tetrafluorobenzene was not observed, and polymerization of hexafluorobenzene with bisphenol proceeded only if the potassium carbonate-bisphenol ratio was carefully controlled.The polymer condensed from decafluorobiphenyl and bisphenol AF was prepared in 77% yield with an inherent viscosity of 1.01 dL/g. The polymer prepared from the condensation of decafluorobiphenyl with bisphenol A was obtained in 48% yield with an inherent viscosity of 0.28 dL/g. These polymers were very soluble in common organic solvents, formed clear, colorless films, and were thermally stable (> 450°C by TGA). The fully fluorinated polymer exhibited low water uptake (0.3% ) and dielectric constant (2.17). 0