Dibutyltin maleate is an organotin compound primarily used as a catalyst in the production of polyurethanes (PU) and as a heat stabilizer in polyvinyl chloride (PVC) materials. In PU synthesis, it promotes the reaction between isocyanates and polyols, improving physical properties such as heat resistance and flexibility, and helps control foaming to prevent air bubbles. As a PVC stabilizer, it prevents degradation from heat and light during processing and use, enhancing durability in rigid applications like pipes, fittings, and profiles. Additionally, it serves as an additive in coatings and adhesives to boost stability, performance, and adhesion, ensuring high-quality, long-lasting products in plastics and related industries.