From recycling to upcycling polyesters. (IMAGE) Tokyo Metropolitan University Caption The team’s newly developed chemical process can upcycle polyesters to morpholine amides using the solvent morpholine and a small amount of titanium-based catalyst. Credit Tokyo Metropolitan University Usage Restrictions Please give credit for use. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.