FOAMABLE POLYLACTIC ACID-BASED RESIN COMPOSITION AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To greatly improve productivity by extreme simplification of processes from aging to impregnation of an excessive isocyanate in the production of a foamable polylactic acid-based resin composition using the isocyanate as a main crosslinking agent. SOLUTION: The foamable polylactic acid-based resin composition having foamability sufficient for practical use is obtained for several hours by impregnating a foaming gas into a polylactic acid-based resin composition in the presence of water without humidifying and aging the polylactic acid-based resin composition containing the excessive isocyanate. The obtained foamable resin composition has an expansion ratio sufficient for practical use. COPYRIGHT: (C)2004,JPO