1. Mix the polyester polyol with an alkaline catalyst and heat the mixture to a specific temperature.
2. Under the action of the alkaline catalyst, the polyester polyol molecules undergo an addition reaction to form monomers or oligomers.
3. Separate the products and subject them to further processing.
It should be noted that in the alkaline catalyst method, factors such as the type and concentration of the alkali and the reaction conditions will also affect the depolymerization results. Furthermore, since alkaline catalysts can trigger side reactions, appropriate control and adjustment are required.
