The preparation of acid chloride of poly(propylene oxide), PPO, the sy
nthesis of prepolymer poly(p-benzamide), and of block copolymers of po
ly(p-benzamide)-b-poly(propylene oxide) are reported. The preparation
of prepolymer poly(p-benzamide), PBA, and activated PPO, as well as PB
A-PPO block copolymer are discussed according to their FTIR spectra.