Like tin-based thermal stabilizers, the BaZn, CaZn, and MgAlZn Thermal Stabilizers for PVC slow down the thermal degradation of PVC. The mechanism involves capturing the hydrochloric acid (HCl) released during the thermal dehydrochlorination of PVC and displacing labile chlorines from the polymer chain, thus preventing the autocatalytic propagation of degradation. Different grades exist for this purpose. suspension and emulsion PVC, serving industries such as medical, food, toys, footwear and electrical. Some of our grades are: free of bisphenol A (BPA), nonylphenol, heavy metals and phthalates.
These thermal stabilizers for PVC are the new trend in the market and the future of the PVCmarket; they have replaced other metallic salt stabilizers and lead in electrical cable applications. Among the new developments are grades that comply with California's Prop 65, which are free of BPA, phthalates, and other substances.
They have found significant application opportunities in medical, food-contact, and toy industries, not only due to their low-odor grades but also because they are considered completely non-toxic materials.
These thermal stabilizers for PVC arose from the need to remove cadmium from PVC to comply with toxicity standards. This product's performance is excellent in terms of thermal stability; however, there are varying grades depending on its application, as well as the formulator's criteria. PVC. We offer powder grades, but liquids are the most common. Their application is limited to general-purpose markets, such as... plastisol, film, injection-molded parts and flexible profiles. It is recommended for use for Flexible and semi-rigid PVC.
It is important to know that depending on your application we offer grades with low volatile content, low plate-out, good weather resistance and good initial color.
It is a variant of the other metallic salt stabilizers with the intention of obtaining good thermal stability and reducing the issue of toxicity to the maximum, thus making it possible to use it in medical applications such as blood bags or IV solution sets.
Within the Thermal stabilizers for PVC made from metallic salts, BaCdZn is being phased out on the market, although there are still some general grades where it is used and where its application poses no health risks. In the local market, it can still be found in... hoses, mats and profiles in industrial sectors. Its advantages are high thermal stability, good cost/benefit, very low plate-out and/or migration, low volatiles and high transparency. It is useful in both flexible and semi-rigid PVC.
