[Untitled]

A computer simulation of the kinetics of the amine salt initiated lactam polymerization was carried out using an extended kinetic model. In the reaction scheme the formation and relatively fast two-way reaction of a tetrahedral intermediate, as well as the role of the acid in its formation were incorporated. On the basis of the extended kinetic model the calculated lactam conversion and the concentration of N-terminal groups, respectively, have been found to be in good agreement with the experimental values for both the amine salt initiated and the hydrolytic lactam polymerization. The numerical values of rate and equilibrium constants are given.