Chiguard® R-455

Chiguard® R-455 by Chitec Technology is a novel reactive benzotriazole UV absorber (UVA). It contains a propanediol group that allows it to chemically bond to the backbone of various polymers. It can react with various hardeners such as isocyanates, melamine resins, and siloxanes. It offers resistance to migration, solvent extraction, heat and long-term weathering. It provides outstanding initial color and effectively controlled yellowing in aromatic TPU materials. Chiguard® R-455 is used in aliphatic PU systems, 2K-PU coatings, and melamine baking enamels.