Impact modifier is gradually developed after the industrialization of PVC. Since the 1960s, due to the rise of petrochemical industry, the plastic industry has developed rapidly, and plastic additives have become an important chemical industry. According to the differences in the composition and use of plastics in various countries, the consumption of plastic additives is about 8%~10% of the plastic output. Today, plasticizers, flame retardants and fillers are the largest amount of plastic additives.