Binary condensation copolymers of 1,2-ethane dithiol and 1,3-propane dibromide, 1,4-butane dibromide, and 1,6-hexane dibromide were prepared. Yields ranged from 55 to 89% with molecular weights of 1-2 × 104 Daltons. the polymers were synthesized via an SN2 process with and without the presence of water. the polymers were characterized by DSC, viscosity, FT-IR, and 1H- and 13C-NMR spectra.