Transport and storage of polyester polyols

Polyester polyols are not classified as hazardous transportation materials. The materials used for storage and transportation containers can be carbon steel, aluminum, stainless steel, as well as polyethylene or polypropylene. Liquid polyester occasionally appears cloudy during long-term storage at low temperatures, which can be eliminated by short heating at around 80 ℃ without affecting its quality. Polyester polyols are prone to moisture absorption and should be stored and transported to avoid the entry of atmospheric moisture. In order to reduce reverse reactions, the temperature should not exceed 120 ℃. The product should be stored in a sealed barrel that is insulated from air at room temperature, or in a container heated, insulated, and filled with nitrogen at 70-110 ℃.