Catalysts play a crucial role in the manufacturing of rigid polyurethane foam by accelerating the reaction between polyols and isocyanates. These compounds facilitate the formation of polyurethane polymer chains, leading to the creation of foam. Catalysts are typically divided into two categories: amine-based and metal-based catalysts. Amine catalysts, such as tertiary amines, promote the reaction by catalyzing the formation of urethane linkages. Metal-based catalysts, like tin compounds, facilitate the reaction by catalyzing the formation of urethane and urea linkages. Catalysts help control the foam’s reaction rate, foam rise, and curing time, ensuring consistent foam quality and performance. They are essential additives in rigid foam manufacturing, enabling efficient production processes and the creation of foam products with desired properties such as insulation, strength, and dimensional stability.
Catalysts: