The United States Dover Chemical Company newly introduced high-performance phosphite zinc thermal stabilizer PhosBoosters, compared with the general mixed metal soap thermal stabilizer, soft PVC has a higher thermal stability and long-term weather resistance, the goal is to replace the mixed metal soap thermal stability The agent completely eliminates toxic heavy metals from PVC processing plants and drastically reduces VOC (organic volatiles) content. In addition, PhosBoosters also reduces mold fouling and product moisture whitening issues. This can shorten the switching time required to change the color and reduce scrap, and at the same time reduce the colorant costs of the processing plant, especially because the new stabilizer prevents the degradation and yellowing of PVC to be more effective, and the cost reduction is more obvious for transparent and light-colored products.
Dover Corporation introduced the first generation of PhosBooster in 2001, which has partially replaced the mixed metal soap heat stabilizers. The second generation products have many types and can completely replace the previous heat stabilizers. The 600 series is used for filling PVC. The 700 series is suitable for transparent products. , FDA approved application should be selected 800 series, foaming PVC products with 900 series.