Pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)

Pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate) (CAS 6683-19-8 ) is a hindered phenolic primary antioxidant used to protect polymers, lubricants, and industrial formulations from oxidative degradation.

It functions by scavenging free radicals generated by heat and oxygen exposure, extending the functional lifespan of finished materials during processing and long-term service.

In plastics and polymer processing, it stabilizes polyolefins, engineering thermoplastics, and elastomers against thermal oxidation during high-temperature extrusion and molding.

Lubricant formulators incorporate it into synthetic and mineral base oils to prevent viscosity breakdown and deposit formation under sustained operating conditions.

Adhesive and sealant manufacturers use it to maintain bond integrity and prevent discoloration in heat-cured systems. Coating and packaging applications rely on it to protect film substrates.

It protects printed surfaces from oxidative yellowing throughout the product shelf life. The material is supplied as a white to off-white powder or granules for industrial use.

Standard grades include technical, food-contact compliant, and polymer-grade specifications meeting requirements under FDA and EU regulatory frameworks for safety and performance.

It is available in both standard and low-dust granule forms to support handling in industrial compounding environments, ensuring efficient integration into various manufacturing workflows.

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