Antioxidant of natural rubber, styrene-butadiene rubber, neoprene rubber, nitrile rubber, etc., has a protective effect on thermal oxygen flexion and cracking. This product can also be used as an antioxidant for polyolefins and lubricating oils. It has a more prominent heat resistance effect in neoprene. If it is used in combination with the antioxidant TPPD, the heat resistance is better. It can also reduce the plasticity of the unvulcanized neoprene, so that the shrinkage rate during calendering is reduced, thereby helping to adjust the size of the semi-finished product and improving the stability of the neoprene during storage and transportation. Mainly used in the manufacture of tires, inner tubes, cables, rubber shoes, rubber floors, thermal rings and sponge products, etc.