Rapid synthesis method of thermoplastic polycaprolactone

The invention discloses a rapid synthesis method of thermoplastic polycaprolactone, which comprises the following steps: carrying out ring-opening polymerization reaction on an epsilon-caprolactone monomer in a catalytic initiation system containing an organic metal alcohol compound to obtain thermoplastic polycaprolactone with high molecular weight and narrow distribution, the method adopts an organic stannous alcohol compound as a catalytic initiation system, has the advantages of high catalytic activity, mild catalytic reaction conditions, short reaction time, high caprolactone conversion rate, small catalyst dosage and low cost, and is beneficial to large-scale use. 本发明公开了一种热塑性聚己内酯的快速合成方法，该方法是ε-己内酯单体在包含有机金属醇类化合物的催化引发体系中进行开环聚合反应，即得高分子量、分布窄的热塑性聚己内酯；该方法采用包含有机亚锡醇类化合物为催化引发体系，催化活性高，催化反应条件温和，反应时间短，己内酯转化率高，催化剂用量少，成本低，有利于大规模使用。