Processing Aid Blendex 869 (XR-3529): Ultra high molecular weight SAN (styrene acylonitrile) process aid. Increased PVC melt strength, good thermoforming properties, and thermoforming control in blow molding applications and calendered rigid and semi-rigid PVC film. Improves hot melt strength and dimensional stability, in PVC and other polymer applications. Also, the density of the grade comes down during the process which eases the production. Usage in PVC Foam Board / Sheet and WPC application to increasing density of PVC Form Board / Sheet. Supplier of GALATA CHEMICALS.