Charge‐transfer complex between p‐oxathiene and maleic anhydride and its relative reactivity in alternating copolymerization

Charge‐transfer complex formation and alternating copolymerization of p ‐oxathiene (POT)‐maleic anhydride (MAnh) system were studied. Relative reactivity of POT‐MAnh complex was obtained from three kinds of terpolymerizations. For example, in terpolymerization of POT, MAnh and acrylonitrile (AN), monomer reactivity ratios of POT‐MAnh complex and AN were found as r 1 (complex)=55,8 and r 2 (AN)=0,0176 at 60°C. POT‐MAnh, p ‐dioxene‐MAnh and vinyl ether‐MAnh systems were compared in relative reactivity and some physical properties concerning charge‐transfer complex. The reactivity of those MAnh complexes was found to be controlled more significantly by some properties related to electron‐donating power of donors rather than by resonance and polarity terms of separate donor monomers.