Cyclo-copolymerization of 1,6-diene with monoolefin, 2. The copolymer composition equation and the relative rates of addition in the cyclo-copolymerization of diallyl ether with maleic anhydride and fumaronitrile

A copolymer composition equation is derived for the cyclo-copolymerization of a 1,6-diene with a monoolefin that do not homopolymerize. The theory is applied to the free radical copolymerization of diallyl ether (DAE) with maleic anhydride (MA) and to that of DAE with fumaronitrile (FN). Both systems fall in the special case where there are no unreacted C?C bonds left in the copolymer. The copolymer compositions are between 1:1 and 1:2 (=diene]:monoolefin]) over a wide range of monomer feed composition. The reactivity ratios obtained from the equation indicate that for the DAE/MA system, the intramolecular cyclization of the uncyclized DAE radical is 2,9 times more effective than the addition of MA monomer to the uncyclized DAE radical, and that for the system of DAE/FN, the intramolecular cyclization of DAE radical is 6,7 times more effective than the addition of FN monomer.