POLYESTER RESIN PREPARED BY USING THE URETHANE-MODIFIED POLYCARBONATE POLYOL AND METHOD FOR PREPARING THE SAME

摘要

PURPOSE: A highly elastic polyester resin is provided to manufacture highly polyester resin with excellent flexability and moldability by using urethane-modified polycarbonate polyol with improved flexibility and moldability. CONSTITUTION: A highly elastic polyester resin comprises: a step of manufacturing urethane-modified polycarbonate polyol; a step of synthesizing polyester prepolymer consisting of carboxyl groups in both ends; and a step of manufacturing a polyester resin comprising the urethane-modified polycarbonate polyol by condensation-polymerizing the urethane-modified polycarbonate polyol and the polyester prepolymer. The comprised amount of the urethane-modified polycarbonate polyol is 10-50 weight% based on total weight of the resin.