Polyurethane is a chemical material that occurs from the reaction of the components of polyol and isocyanate. They have high chemical and mechanical resistance and can be shaped easily. Polyurethane has two main components. Polyol (Polyether Polyol, Polyester Polyol) and Isocyanate (MDI, TDI or mixtures in different proportions). According to the usage areas, various polyurethane additives can be used next to these two main components.
Although polyurethane is known in 19th century, it had been put away as the thought of useless material until it is obtained good quality plastic from Polyurethane by Otto Bayer in 1937. After that this technology had moved to the United States in 1957 and improved by two immigrant chemists Jean-Pierre and Dr. Abbate Fritz Hartmann.