PALLADIUM-CATALYZED FORMATION OF POLY(IMIDE-AMIDES) .2. REACTIONS WITH CHLOROIODOPHTHALIMIDES AND DIAMINES

High molecular weight poly(imide-amides) can be readily formed by the palladium-mediated carbonylation and condensation reactions of activat ed chlorophthalimide monomers and aromatic diamines. The presence of i odide ion greatly accelerates the rate of reaction and increases the u ltimate molecular weight of the polymer. Polymerizations proceed best using a protocol of high CO pressure (90 psig) for 2-4 h, followed by lower CO pressure (20 psig) in DMAc or NMP for 24-48 h at 100 degrees C using 0.3-3.0% PdCl(2)L(2) (L = PPh(3)) as the catalyst with 2-6 equ iv of PPh(3)/Pd and 0.3-1.0 equiv of an iodide/chloro group.