| abstract |
The present invention can provide a steric complex polylactic acid composition which is obtained by using a tin-based polymerization catalyst and a phosphorus-based compound in poly-L-lactic acid (A) and poly-D-lactic acid (B). A specific ratio of an organic acid metal salt or an organic metal salt is used in the crystallization of the stereo compound, and the stereo compound has a high degree of crystallinity, has a high crystal melting point of the stereo compound, and even recrystallizes the stereo compound crystallization. A polylactic acid composition having a small decrease in melting point, a small decrease in molecular weight, and excellent moldability and heat resistance. |