Hyperbranched aromatic polyamide copolymers were prepared by direct polycondensation of 3-(4-aminophenoxy)benzoic acid (AB monomer) and 3,5-bis(4-aminophenoxy)benzoic acid (AB(2) monomer) in the presence of triphenyl phosphite and pyridine as condensation agents. The structure of resulting polymers was confirmed by IR, H-1, and C-13 NMR measurements. The composition of monomers determined by H-1 NMR was almost identical to the feed ratio of monomers. C-13 NMR revealed that the copolymer's were composed of five kinds of repeating units whose ratio was consistent with statistical distribution. The resulting copolymers were soluble in aprotic polar solvents such as DMF, NMP, and DMSO, and transparent yellow films were prepared from DMF solution of the copolymers. The temperature of a 5% weight loss determined by TGA was over 400 degrees C for all copolymers. The feed ratio of the monomers affected the glass transition temperatures (T(g)s) and the softening points (T(s)s). A minimum T-g was observed at a 50% of the AB(2) monomer whereas T(g)s gradually decreased with increasing the AB(2) monomer and became constant over a 60%. Young's modulus determined by the tensile test decreased from 2.4 to 1.6 GPa with increasing amount of the AB(2) monomer in the range 0-60%.