polyurethane tpe anti-yellowing agent in injection molding and extrusion applications 🌟 introduction: the battle against yellowing in the world of polymer processing, especially when dealing with thermoplastic polyurethanes (tpus) or polyurethane-based thermoplastic elastomers (tpes), one of the most persistent challenges is yellowing. this undesirable discoloration can occur during or after processing, diminishing product aesthetics, consumer...