Widely used as a UV absorber in polymers, coatings, and plastics to prevent degradation caused by sunlight. It stabilizes materials against yellowing, cracking, and loss of mechanical strength due to prolonged UV exposure. Commonly added to polycarbonates, polyurethanes, acrylics, and surface coatings for automotive, construction, and outdoor applications. Also found in adhesives and sealants where long-term weather resistance is required. Effective in both clear and pigmented systems, offering protection without affecting transparency. Used in combination with other stabilizers like HALS for enhanced performance.