The tin thermal stabilizers These are the products used by manufacturers of PVC for different industries and whose function is to delay the thermal degradation of the material during its processing at high temperatures. The thermal degradation of PVC It begins with the dehydrochlorination of the polymer chain, releasing hydrochloric acid (HCl) gas. This HCl autocatalyzes further degradation, generating conjugated polyenes in the chain that cause the characteristic yellowing of degraded PVC. Proper dosage prevents surface yellowing of the product and promotes obtaining the desired finished product. Furthermore, the tin thermal stabilizers They provide excellent initial color, shine, and transparency, making them one of the most popular products on the market.
Tin thermal stabilizers naturally have a certain odor, which can be controlled by reducing their dosage and/or by using them in combination with other co-stabilizers that together help prevent thermal degradation. Due to their high performance, they are commonly preferred for rigid PVC and in processes involving high compression, such as injection and extrusion.
Special grades exist for outdoor applications, since the methyl tin Mercaptide-type (sulfur-containing) pigments are sensitive to solar radiation due to absorption in the UV range and the generation of yellow chromophores. Methyltin maleate-type pigments offer better UV resistance but require more careful initial coloring. Both effects can be mitigated by adding appropriate co-stabilizing phosphites and UV absorbers.
Although its unit cost may be higher compared to other alternatives, it is usually selected due to its excellent cost–benefit ratio and its easy integration into the PVC matrix during the mixing process.
It is one of the most widely used tins on the market due to its excellent performance relative to its cost, and it also provides good transparency, making it suitable for both transparent and opaque applications. It is commonly used in rigid products for extrusion, calendering, and injection molding processes of all kinds. We offer grades with varying tin content.
They are the tin thermal stabilizers that the PVC pipe manufacturers They are used. They are tailored precisely to the needs of these manufacturers, where the key is to minimize the cost-benefit ratio to maximize profits while maintaining peak productivity. Their tin content is lower than that of other types of stabilizers. methyl tin But it is more than enough for what is required.
It's a type of tin thermal stabilizer guy octyl, which is the preferred alternative for use in medical and/or food products. It has FDA approval in terms of toxicity. Its tin content is lower than that of conventional methyltin, however, it has sufficient yield for processing PVC.
