It shows excellent antioxidation as wells as pump-transport convenience. With low volatility and outstanding compatibility it shows especially good effect during the process of forced air cooling of PU. This function can also prevent surface fogging of auto parts and fabric's coloring (e.g.: furniture, carpet etc.). The low volatility and liquid state make it especially suitable under the condition of liquid, latex, suspension, solution or melting polymerization and processing. It can be added before, in the middle of or after polymerization.