Method for removing catalyst in polymer prepared by atom transferring free radial polymerizing

The present invention discloses adsorption in situ by the removal of a polymer prepared by atom transfer in free radical polymerization catalyst, which catalyst can effectively remove the polymer, i.e., a transition metal complex compound with a tertiary amine. Which step an adsorbent and a solvent (with or without a solvent) was placed in situ terminated atom transfer radical polymerization system, the catalyst and adsorbent physical and chemical adsorption reactions, filtered and dried to give the pure polymer adsorbent silicate, activated carbon, alumina and the like. Situ adsorption method of the present invention is by far more effective and practical method has good prospects for industrial applications.