LOW-MELT-VISCOSITY POLYGLYCOLIC ACID, PROCESS FOR PRODUCING THE SAME, AND USE OF THE LOW-MELT-VISCOSITY POLYGLYCOLIC ACID

摘要

A low melt viscosity polyglycolic acid having a melt viscosity of at most 100 Pa·s as measured at a temperature higher by 10°C than the melting point of the polyglycolic acid and a shear rate of 122 sec -1 , a temperature at 3%-weight loss on heating of at least 280°C and a water content of at most 500 ppm, and being in a solid state at a temperature of 20+15°C, and a production process of the low melt viscosity polyglycolic acid including a water vapor absorption step and a heat treatment step for a high melt viscosity polyglycolic acid being in a solid state.