New hydantoin vinyl ether polymers

摘要

AbstractThe title hydantoin vinyl ether polymers are water‐soluble alternating copolymers of a hydantoin vinyl ether (HVE) and maleic anhydride (MA). The copolymerization parameters are ∼0 and 0.06, respectively. The HVE/MA polymers were compared with reference poly(vinyl pyrrolidone) (PVP) and methylvinylether (MVE)/MA polymers, of approximately the same specific viscosity, with regard to two key properties: solution viscosity and complexing capability (iodine). The HVE/MA polymers gave higher solution viscosities than PVP. When compared to MVE/MA, solution viscosity was lower initially but considerably higher after standing for a longer period of time. The inverse viscosity/time relationship observed for the MVE/MA polymer was not apparent in the case of HVE/MA. With regard to complexing capability the HVE/MA polymers proved to be clearly more effective. This is thought to be due to the HVE/MA polymer structure which offers two lactam groups plus two carboxyl groups for complexing vs. one lactam and two carboxyl groups, respectively, in the case of the reference polym