In 1849, urethane was created for the first time. Wurtz and Hoffman reported a reaction involving an isocyanate and a hydroxyl compound during those years. Dr. Otto Bayer modified this reaction for a commercial application in 1937. Before this time, polyester-based urethane polymers had gradually su
Rigid foam polyurethane is a type of polyurethane foam that is used as insulation material. It is made by combining two liquid components, a polyol and an isocyanate, with a blowing agent and other additives. When mixed together, the reaction of the polyol and isocyanate forms a rigid foam with exce
