Tert-Butyl Peroxybenzoate (TBPB), CAS 614-45-9, is a versatile organic peroxide revolutionizing polymerization and curing processes across industries. As a high-performance initiator, TBPB combines thermal stability with exceptional reactivity—making it indispensable for manufacturers aiming to optimize product quality and efficiency.
Key Properties & Advantages
High Reactivity in Polymerization:
TBPB acts as a medium-temperature initiator (decomposition range: 104°C–165°C), ideal for synthesizing polyethylene, polystyrene, polyacrylics, and vinyl acetate polymers. Its controlled decomposition ensures efficient radical generation, accelerating polymerization while maintaining molecular-weight consistency.
In unsaturated polyester resins (e.g., SMC/BMC molding), TBPB enables rapid curing at 130°C–160°C, achieving cycle times of 1–3 minutes—critical for high-volume production of automotive composites and fiberglass.
Safety & Stability:
Unlike azobis initiators, TBPB reduces toxicity in acrylic resins. It’s a low-irritant (LD50 >2,000 mg/kg in rabbits) but requires strict handling: store below 30°C, away from heat/flammables, and avoid copper or amine contaminants to prevent explosive decomposition.
Multi-Industry Applications:
Plastics & Rubber: Primary initiator for LDPE (tubing/films) and vulcanizing agent for silicone rubber.
Coatings & Adhesives: Crosslinks polyester resins in UV-resistant gel coats and structural adhesives.
Fuel Additives: Boosts cetane numbers in diesel formulations.
Why Choose TBPB Over Alternatives?
Synergistic Formulations: Combine with peroxides like Trigonox C or Luperox P to customize curing profiles.
Shelf-Life Optimization: With inhibitors (e.g., BC 500), TBPB-resin mixtures remain stable for months, reducing waste.
Eco-Efficiency: Minimizes VOC emissions versus solvent-based initiators.
Technical Tips for Optimal Use
Dosage: 1–2% w/w in polyesters; adjust for filler/pigment sensitivity (e.g., cobalt salts delay curing).
Safety Protocols: Use explosion-proof storage, PPE, and water cooling for fire emergencies (flash point: 96°C).
Procurement & Supply
Global suppliers like Shandong Do Sender Chemicals Co.,Ltd. and perodox offer TBPB-99 grades in 20–25 kg PE drums. Custom formulations (e.g., solvent-diluted slurries) mitigate transport risks. Inquire for bulk pricing.
TBPB bridges performance and safety for next-gen polymer manufacturing. Whether scaling SMC production or refining fuel additives, its versatility delivers unmatched ROI.
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