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SAN Processing Aid is a super high molecular weight processing aid ,it is a kind of super high molecular weight polymer which is copolymerized by styrene and acrylonitrile. It can promote PVC plasticization, obviously improve the thermal deformation temperature and surface smoothness of PVC products, and at the same time give PVC products higher surface hardness and rigidity.The processing performance is good, plasticizing quickly.It endow PVC products good surface finish. Compared with other ordinary processing aids, it has higher molecular weight which is above 5 million, the product has a good cost performance.

SAN processing aid promotes faster fusion, increases melt strength, enhances extensibility and improves melt homogeneity.Increases the surface quality of PVC products. It is a good general purpose processing aid that promotes a wide processing window improving PVC gelation, fusion fluidity and processing performance and are broadly used in PVC profiles, sheets, pipes, pipe fittings and foam products.