A phenol-free and environmentally friendly polymeric phosphite antioxidant with lower volatility and excellent hydrolysis resistance. It can be widely used in polymers such as PVC and PU elastomers. This product has a large molecular weight and contains active hydroxyl groups. It is very suitable for PU systems. It has excellent heat pressure resistance and exhaust gas resistance, and can effectively improve the maturation degree of the sponge.
Recommended addition amount: 0. 1-2.0%.