The process flow of DODGEN Chemical's high molecular weight polyglycolic acid mainly includes the synthesis and purification of glycolic acid or glycolate as raw materials to glycolide, ring opening polymerization of glycolide, devolatilization, and granulation units.
View news: DODGEN signed contracts with Johnson Matthey and Eastman to jointly provide the new generation polyglycolic acid process technology
Adopting reactive crystallization technology, with low reaction temperature and few side reactions;
The obtained glycolide has high purity, stable properties, and is easy to purify;
High utilization rate of reactants and low cost;
Polyglycolic acid has a narrow molecular weight distribution and stable properties;
Accurate control of residence time, low product yellowing index.