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PVC Thermal Stabilizers

During high-temperature processing operations, PVC is subject to thermal degradation by a dehydrochlorination process, resulting in undesired effects such as discoloration and cross-linking. This type of degradation can also take place during end use at elevated temperatures, for example in automotive applications.

PVC Thermal Stabilizers function mainly by substitution of the labile allylic chlorine atoms that are intermediates in the dehydrochlorination process. By this mechanism, they significantly enhance the heat stability of the polymer during both melt processing and end-use.

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