POLYLACTIDE RESIN WITH HIGH CONVERSION RATIO, A PREPARATION METHOD THEREOF AND A POLYLACTIDE RESIN COMPOSITION COMPRISING THE SAME

摘要

PURPOSE: A polyactide resin is provided to enable semi-permanent use by exhibiting excellent mechanical properties and excellent heat resistance.;CONSTITUTION: A polyactide resin includes a residual actide monosaccharide and an organic metal complex. The polylactide resin has average molecular weight of 100,000-1,000,000. The polyactide resin has a hydrolysis rate constant k of 0.1 day^(-1) or less in the temperature of 60°C and the relative humidity of 90% condition. Based on the total weight of the polyactide, the residual metal amount of tin or zinc derived from a catalyst is 20ppm or less.;COPYRIGHT KIPO 2011