<正> This paper reports the kinetics of group transfer polymerization （GTP）of ethyl acrylate （EA）with zinc iodide catalyst in 1

2-dichloroethane using dimethyl ketene methyl trimethylsilyl acetal （MTS） as initiator at 0℃and above 0℃. The amount of catalyst used was studied. When zinc iodide catalyst used is more than 10mol% relative to monomer

the rate of polymerization is proportional to the concentration of monomer

whereas zinc iodide catalyst used is less than 10 mol% of the monomer

the rate of polymerization is independent of the monomer concentration.In the GTP of EA an induction period was observed when the zinc iodide contents are less than l0mol%. If the reaction temperature is over 0℃

living species become unstable and diminish

leading to incomplete monomer conversion. The reaction curves equations are obtained. The polymers have narrow molecular weight distributions which are not changed as decreasing zinc iodide contents. The polydispersity is about 1.2.