Kinetic aspects of the copolymerization of tetrahydrofuran with propylene oxide. Part II

The cationic copolymerization of tetrahydrofuran with propylene oxide was carried out in the presence of boron fluoride etherate, 1,2-propanediol, and ethylene chloride, used as catalyst–cocatalyst–solvent system. Reactions were carried out in the −40 to +20°C. temperature range, at atmospheric pressure. The influence of various other parameters on the composition and structure of the copolyetherdiols obtained has been studied. Kinetic data, including energies of activation (E) and frequency factors (A) for the comonomer (THF and PO) consumptions and data on the molecular weights and the per cent yields of the copolyetherdiols obtained are reported.