Polymerization of isoprene with vanadium-containing catalysts: Kinetic nonuniformity of active centers

For the polymerization of isoprene catalyzed by vanadium-based ion-coordination systems, the kinetic nonuniformity of active centers was studied and active centers of three to four types were revealed. By the solution of inverse kinetic problems, kinetic parameters were first estimated for individual active centers. It was demonstrated that the nature of an organoaluminum compound affects the kinetic nonuniformity of a catalyst, kinetic parameters of individual active centers, and molecular characteristics of polyisoprene.