Copolymerization of N-vinylpyrrolidone with N-allylated acylhydrazines

The free-radical copolymerization of N -vinylpyrrolidone with N,N -diallyl- N ′-acetylhydrazine and N,N -diallyl- N ′-butanoylhydrazine has been investigated in bulk and solution. The copolymerization yields random copolymers enriched with N -vinylpyrrolidone units. The kinetic study of the reaction has revealed that the rate of copolymerization decreases with a rise in the fraction of an allyl monomer in the initial monomer mixture. Both double bonds of diallylacylhydrazines are involved in the copolymerization to give rise to five-membered pyrrolidine rings.