composite metal soap heat stabilizers for PVC Thermal Stability

PVC heat stabilizers generally based on processing tribasic lead sulfate (three salt), dibasic lead stearate (two salt)-based, then add a small amount of lead stearate (hard lead) and fluorescent brightener  Calcium stearate (hard calcium), may be used alone, can be reasonable, made of composite lead salt stabilizer. The toxicity of lead cause for great concern, three salt, two lead salt stabilizer higher indifferent people, and thus the metal soap-based heat stabilizer (particularly a lead-free metal soap) for people concerned, the thermal stability of the metal soap Mechanism has become a hot topic. Because PVC heat stabilizers in the production aspect  potassium soap is protected by patents, so there is no reported its exact composition and content. Commercial heat stabilizers are commercially available mixture of various compounds. Mixture is better than pure substances stabilizing effect. Meanwhile, in dealing PVC heat stabilizers are required to carefully consider its toxicity. PVC, processors and consumers should pay attention to warnings about the toxicity of  acrylic processing stabilizer. With advanced equipment and technology can analyze the chemical composition of the stabilizer. Composite metal soap heat stabilizers 4180 (referred to 4180) is a novel heat stabilizer PVC processing, is to analyze them in order to provide a viable analysis technique, it is beneficial for heat stabilizers toxic substances supervision.