Abstract
A kinetic study has been made of butadiene polymerization using the catalyst system bis-π-pentenyl nickel chloride-zinc trichloroacetate in hexane and toluene at 20°, over a wide range of monomer concentrations. A general kinetic scheme proposed for this process involves reversible coordination of monomr based on metallorganic compound (formation of active centres), chain propagation during interaction of monomer with the active centre and mutual or linear termination. The experimental data are adequately described by equations derived in the light of the proposed scheme (the termination constant being equal to zero). Constants for complex formation have been determined, and the propagation constants obtained. It is shown that the same equations describe the polymerization kinetics of butadiene on system bis-π-pentenyl nickel chloride-trichloroacetate in toluene and chlorobenzene.
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