four series of nonionic copolymer surfactants have been prepared by the free radical
copolymerizations of dioctyl itaconate (DOI) with dioxypropylated itaconic acid.
Copolymerization reactions were carried out in solution at 70° C using 1mol. percent
azopisisoputyronitrile as a free radical initiator. The copolymers were obtained by
reprecipitation from petroleum ether (40-60) and finaly dried in vacuum at 60° C. The
structural features of these nonionic copolymer surfactants have been confirmed by IR and ...