Durastrength® 320 NA

1.  Durastrength® 320 impact modifier has been extensively tested for long-term weather resistance, retaining excellent impact resistance and color. Similar weathering benefits are seen in translucent applications.
2. The unique chemical composition of Durastrength® 320 impact modifier imparts excellent room and low-temperature impact resistance.
3. Because of the low-melt viscosity of Durastrength® 320 impact modifier, extrusion temperatures are lower, resulting in enhanced compound stability and output.
4. Vinyl formulations employing Durastrength® 320 impact modifier exhibit reduced melt viscosity which helps to reduce extrusion pressures, prolonging screw and barrel life.
5. The low melt viscosity of Durastrength® 320 impact modifier allows higher output without increasing extruder amps.

Durastrength® 320 impact modifier is recommended for use in lead, tin and mixed-metal stabilized profile applications where enhanced room and cold-temperature impact resistance is required. As with all impact modifiers for PVC, proper formulation is required to develop the proper shear and mixing during extrusion so that impact properties are optimized. Durastrength® 320 impact modifier is also ideally suited for vinyl siding, fencing, pipe, conduit and injection molded goods. Its low-melt viscosity and rapid fusion characteristics are ideal for difficult injection molding applications.