Data of the copolymerization of styrene with benzonitrile are presente
d. The effect of reactivity of monomers, catalyst nature, temperature
and process duration on the composition and molecular weight of the fo
rmed polymers are discussed. The polymerization mechanism is suggested
. Copolymers of different composition were used for synthesis of solub
le polyelectrolytes. The conditions of their formation and principal p
hysico-chemical characteristics were studied. The fields of applicatio
n are discussed.