Terpolymerization involving sulfur dioxide I. Terpolymerization of α‐olefin, allyl chloride and sulfur dioxide

Mixtures of α‐olefin, allyl chloride and sulfur dioxide were polymerized by cumene hydroperoxide to prepare sulfone terpolymers, some of which were found to be soluble and fusible. The compositions of sulfone terpolymers of butene‐1 (BT), allyl chloride (AC), and sulfur dioxide were expressed by the formula, magnified image where x + y = z. The terpolymerization was regarded as a binary system copolymerization between the complexes BTSO2 and ACSO2, and the following equation representing the composition of the sulfone‐terpolymer was derived from the copolymer composition equation of the two complexes without evaluation of the equilibrium constants of the two complex formations, where (BTSO2 unit), (ACSO2 unit), (BT unit), and (AC unit) are the mole fractions of BTSO2, ACSO2, BT and AC units in sulfone‐terpolymer, respectively, and [BT] and [AC] are the concentrations of monomeric BT and AC. This equation has no longer a term containing equilibrium constants of the complex formations and can be used to estimate the composition of the sulfone‐terpolymer.