SAN processing aid is an ultra-high-molecular-weight functional styrene-acrylonitrile copolymer. Its high-molecular-chain structure rapidly diffuses and interweaves during PVC processing to actively regulate the plasticization process and improve melt processability. It requires no complex formula and is compatible with extrusion, foaming and forming processes of various rigid and semi-rigid PVC grades. It mitigates processing defects and enhances finished-product properties including appearance, hardness and heat resistance. It serves as a universal additive for improving the quality and production efficiency of PVC products.

Key Product Strengths

Excellent Processing Performance & High Efficiency

Boasting outstanding processability and fast plasticization, the product greatly boosts production efficiency. Thanks to its ultra-high molecular weight property, it can markedly enhance PVC melt strength and improve processing stability at low addition levels.

Superior Product Quality Improvement

It effectively raises the heat-deflection temperature and surface gloss of PVC products, delivering higher surface hardness and rigidity. Meanwhile, it optimizes melt homogeneity and mitigates surface defects such as shark-skin.

Excellent Material Compatibility and Stability

As an SAN copolymer, it features exceptional compatibility with PVC. Its rigid molecular structure endows finished articles with higher heat resistance, favorable dimensional stability and chemical corrosion resistance.

Outstanding Cost-Performance

Benefiting from optimized molecular-structure design, the SAN processing aid delivers premium performance with effective cost control. It ranks among the most cost-effective options for PVC processing aids.

Product Applications

PVC Pipes and Profiles

Applied to various building- and industrial-grade PVC water supply-drainage pipe fittings, electrical conduits, plastic window-door profiles, decorative profiles and industrial special-shaped extruded products. It optimizes melt plasticization, and improves surface gloss, dimensional stability and overall structural strength of finished products.

ABS and ABS/PC Alloys

Used for blend modification of engineering plastic parts such as electronic-electrical housings and automotive interior components. It effectively enhances the melt processing fluidity of ABS and ABS/PC alloy systems, lowers processing difficulty for extrusion and injection molding, reduces surface defects including flow marks, sink marks and silver streaks, and boosts molding efficiency as well as comprehensive mechanical properties.

Injection-Molded Pipe Fittings

Suitable for all kinds of PVC injection-molded pipe fittings, joints, accessories and special-shaped injection-molded articles. It improves melt filling fluidity during injection molding, shortens molding cycle, and effectively minimizes defects such as short shot, sink mark and flash. It greatly upgrades appearance quality, dimensional accuracy and production stability of injection-molded products.