A waterborne coating can look satisfactory when dry yet still fall short of the resistance required in use. When the resin contains suitable reactive groups, a carbodiimide crosslinker may be a candidate for improving the coating’s performance. The useful development question is not simply whether crosslinking occurs. It is whether the selected crosslinker delivers the required resistance while preserving working time, film formation and the flexibility needed by the finished product. This guide proposes a structured evaluation for carboxyl-functional waterborne coatings. Illustrative liquid formulation. Crosslinker compatibility, working time and cured-film performance should be verified in the intended coating system. Confirm

Polyester TPU can meet demanding requirements for flexible films, tubing and molded components. For parts exposed to warm, humid conditions, however, initial mechanical properties tell only part of the story. The more useful question is how much performance remains after exposure. An anti-hydrolysis agent for TPU should therefore be selected around the polymer grade, manufacturing process and intended service environment. This guide explains the role of carbodiimide stabilization and proposes a practical evaluation plan for development teams comparing candidate additives. Illustrative polymer-film application. Hydrolysis resistance should be assessed using the intended TPU grade and service conditions. Why polyester TPU needs