N,N,N’,N”,N”-Penmethyldipropylene triamine: an ideal low-odor polyurethane production solution Introduction Polyurethane (PU) is a multifunctional polymer material widely used in the fields of construction, automobile, furniture, footwear, packaging, etc. Its excellent physical properties, chemical stability and processing flexibility make it one of the indispensable materials in modern industry. However, traditional polyurethane production is often accompanied by...