Poly(arylene imino ether ketone) containing isopropylidene group (pr-PIEK) was synthesized by the condensation polymerization of 1

4-bis-(4-bromobenzoyl)benzene and 2

2-bis［4-(4-aminophenoxy)-phenyl］-propane via Palladiumcatalyzed aryl amination reaction with high molecular weight

Mn=5.15×104

Mw=1.26×105.The catalyst was tris(dibenzylideneacetone)dipalladium

and the catalyst ligand was BINAP.The monomers

1

4-bis-(4-bromobenzoyl)benzene was synthesized by Friedel Crafts benzoylation reaction

and 2

2-bis［4-(4-aminophenoxy)phenyl］propane was obtained via two steps.The structure of pr-PIEK was characterized by means of FT-IR

1H-NMR spectroscopy and elemental analysis

and the testing results showed a good agreement with the proposed structure.XRD

DSC and TG measurements show that pr-PIEK possess amorphous nature

good thermal stability with high decomposition temperatures (TD＞450℃)

mechanical properties (tensile intensity=72.76 MPa

tensile modulus=1013.63 MPa

rupture tensibility=10.32%) and good solubility

pr-PIEK can be dissolved in common organic solvent CHCl3 at room temperature and dissolved in acetone at 50℃.