A series of polymers from new diamidedianhydrides of arylene-di(benzene-5-amido-1,2-dicarboxylic) anhydride type and aromatic tetraamines (3,3＇-diaminobenzidine and 3,3＇,4,4＇-tetraaminodiphenylether) were synthesized using one step high temperature polycondensation in m-cresol and p-chlorophenol at 180 degrees C and low temperature polycondensation. The polymers had a semiladder structure. The influence of the monomer structure and polycondensation method on the polymer properties has been investigated.