Dragonox-5057 is used in combination with hindered phenols such Dragonox-1520 as an excellent co stabilizer in polyurethane foams . In the manufacture of flexible polyurethane slabstock foams core discoloration or scorching results from the exothermic reaction of diisocyanate with polyol and diisocyanate with water. Proper stabilization of the polyol protects against oxidation during storage and transport of the polyol as well as scorch protection during foaming. Dragonox-5057 can also be used in other polymers such as elastomers and adhesives and other organic substrates. Dragonox-5057 is a kind of liquid hindered amine antioxidant. It has unique liquid property as well as oxidation resistant of hindered amine.