Unsaturated Polyester Resins (UPR) is an important type of thermosetting resin, widely used in composite materials, anti-corrosion coatings, Building decoration, electrical insulation and other fields. Its unique properties, such as good mechanical properties, corrosion resistance, processability, and relatively low cost, make it indispensable in multiple industries. Butyl(oxo)stannanol, as a type of efficient catalyst, plays a...