tert-butyl peroxypivalate

Tert-butyl peroxypivalate (CAS 927-07-1), abbreviated TBPP, is an organic peroxide initiator that triggers free-radical polymerization and crosslinking in polymer manufacturing.

Where is tert-butyl peroxypivalate used?

• PVC suspension and emulsion polymerization: initiation at 40–60°C for control of molecular weight distribution
• Acrylic and vinyl acetate polymerization: consistent conversion in batch and continuous reactors
• Rubber and elastomer compounds: crosslinking agent that builds network structure in EPDM and influences hardness
• Coatings and adhesives: cure initiation where higher-temperature peroxides would degrade sensitive co-monomers
• It is a vital component for high-performance resins.

Good to know: Its relatively low decomposition temperature suits controlled, low-temperature initiation. Transport is temperature-controlled.

Commercial specifications

• Solution at around 75% in aliphatic hydrocarbon solvents
• Technical grade, specifications aligned to active oxygen content