This paper introduced a process of preparing plasticizer DOTP from waste PET by alcoholysis with RE complex catalyst.Optimun conditions for preparing were also established.

• 以稀土复合催化剂催化，用废涤纶和辛醇为原料，采用醇解法制取对苯二甲酸二辛酯（DOTP）增塑剂，并对其工艺条件进行优化。