A series of new polyesters was prepared from terephthaloyl (or isophthaloyl) chloride acid with various cardo bisphenols on solution polycondensation in nitrobenzene using pyridine as hydrogen chloride quencher at 150 degreesC. These polyesters were produced with inherent viscosities of 0.32-0.49 dL.g(-1). Most of these polyesters exhibited excellent solubility in a variety of solvents such as N,N-dimethylformamide, tetrahydrofuran, tetrachloroethane, dimethyl sulfoxide, N,N-dimethylacetamide, N-methyl-2-pyrrolidinone, m-cresol, and o-chlorophenol. The polyesters containing cardo groups including diphenylmethylene, tricyclo[5.2. 1.0(2.6)]decyl, tert-butylcyclohexyl, phenylcyclohexyl, and cyclododecyl groups exhibited better solubility than bisphenol A-based polyesters. These polymers showed glass transition temperatures (T-g's) between 185 degreesC and 243 degreesC and decomposition temperatures at 10% weight loss ranging from 406 degreesC to 472 degreesC in nitrogen. These cardo polyesters exhibited higher T-g's and better solubility than bisphenol A-based polyesters.