Antioxidants are a class of chemicals that, when present in only a small amount in a polymer system, can delay or inhibit the oxidation process of the polymer, thus Prevents the aging of polymers and extends their service life, also known as “anti-aging agents”. According to the understanding of the supply of antioxidants: the classification of antioxidants, one is the main antioxidant, the other is the auxiliary antioxidant, the following is the auxiliary antioxidant 626:
Antioxidant 626 appears as white crystalline powder or granules; melting range 170-180℃; flash point 168℃; ignition point 421℃; bulk density 0.43g/mL; dust explosion concentration lower limit 0.12Kg/m3, explosive index 0.37; easily soluble It is soluble in organic solvents such as toluene and methylene chloride, slightly soluble in alcohols, and insoluble in water. This product has poor resistance to hydrolysis. Care should be taken to prevent moisture and heat. This product has stable chemical properties.
Antioxidant 626 is a highly efficient phosphite auxiliary antioxidant with good compatibility with most polymers. It has good prevention of discoloration caused by light and heat. It is characterized by anti-yellowing and high transparency. It is a low-volatility organic synthetic antioxidant polymerization inhibitor and also has a certain light stabilizing effect.
Antioxidant 626 is generally not used alone. It is often used in combination with phenolic main antioxidants such as antioxidant 1010. When used together with antioxidant 1076, it has an excellent synergistic effect and can improve polymerization. Thermal stability during material processing.
Antioxidant 626 is widely used in PE, PP, PS, polyamide, polycarbonate, ABS and other polymer materials after compounding with phenolic antioxidants. It is also suitable for rubber and elastomers. Coatings and adhesives.
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