overview of amine foam delay catalyst amine foam delay catalysts are a class of functional additives widely used in the foaming process of polyurethane foam. their main function is to control the rea ...

overview of polyurethane catalyst a-300 polyurethane (pu) is a high-performance polymer material and is widely used in many fields such as construction, automobile, furniture, and electronics. its ex ...

introduction polyurethane (pu) is an important polymer material, due to its excellent physical properties and wide applicability, has been widely used in modern industry. especially in the field of f ...

the background and importance of leather tanning process the leather tanning process is the process of transforming animal skin into a durable, soft material with specific physical and chemical proper ...