| abstract |
Even if a tin-based polymerization catalyst and a phosphorus-based compound are present in poly L-lactic acid (A) and poly D-lactic acid (B), the stereocomplex crystallinity is high by using a specific ratio of an organic acid metal salt or an organic metal salt for crystallization of the stereo complex. It is possible to provide a stereocomplex polylactic acid composition having a high stereocomplex crystal melting point, a small drop in the melting point of the stereocomplex crystal even after remelting, a small decrease in molecular weight, excellent moldability, and heat resistance. |