| 摘要 |
PROBLEM TO BE SOLVED: To provide a polylactic acid composition of which the rate of change in melt viscosity is reduced and which has excellent moisture- and heat-resistant stability and hue, thereby being suitable for industrial production. SOLUTION: The composition contains 100 pts.wt. of polylactic acid (component A) and 0.01-10 pts.wt. of an acrylic resin (component B) with an epoxy equivalent of 250-500 g/mol and a weight-average molecular weight of 3,000-10,000. In the composition, the rate of change in melt viscosity when held at 260°C for 30 minutes is within±30 and the retention of reduced viscosity when held in hot water at 130°C for 30 minutes is 80-100%. COPYRIGHT: (C)2010,JPO&INPIT |
