hydrotalcite

Hydrotalcite, CAS 11097-59-9 Hydrotalcite refers to a class of synthetic Layered Double Hydroxides (LDHs) with a well-defined lamellar structure. These materials exhibit exceptional anion exchange capacity and alkaline buffering function, enabling rapid capture of hydrochloric acid released during the thermal degradation of PVC/CPVC. This effectively suppresses discoloration, delays onset of decomposition, and extends processing windows. Due to their high thermal stability, UV absorption capability, and refractive index closely matched to PVC resin, hydrotalcites maintain excellent transparency while delivering long-term color hold—even in demanding applications.