| 摘要 |
To obtain a polyester by a method including: mixing a cyclic ester such as a lactide and an alkylaluminum compound such as trimethylaluminum or triethylaluminum; and then conducting ring-opening polymerization of the cyclic ester by mixing at least one selected from the group consisting of organic lithium-based ring-opening polymerization catalysts, organic sodium-based ring-opening polymerization catalysts, organic potassium-based ring-opening polymerization catalysts, organic zinc-based ring-opening polymerization catalysts, organic magnesium-based ring-opening polymerization catalysts, organic tin-based ring-opening polymerization catalysts, organic calcium-based ring-opening catalysts, organic titanium-based ring-opening polymerization catalysts, and amine-based ring-opening polymerization catalysts with the resulting mixture. |
