Perovion BPIC L75 is a liquid organic peroxide based on tert-butylperoxy isopropyl carbonate (TBPIC) chemistry, supplied as a 75% active solution in an inert hydrocarbon carrier. Perovion BPIC L75 is an aliphatic percarbonate initiator that decomposes thermally to generate free radicals, supporting both the elevated-temperature curing of unsaturated polyester (UP) resins and the polymerization of a range of vinyl monomers. Perovion BPIC L75 is widely used in hot press moulding of thermoset composites as well as in the polymerization and copolymerization of styrene and related monomers, giving formulators a versatile initiator that spans both thermoset and thermoplastic production routes across multiple industries and equipment types.
Perovion BPIC L75 Overview
tert-Butylperoxy isopropyl carbonate is an aliphatic percarbonate, a peroxide class distinct from ketone peroxides and diacyl peroxides, offering its own characteristic decomposition temperature range and radical generation profile. Perovion BPIC L75 is supplied at 75% active content in an inert hydrocarbon solvent, which improves handling safety and dosing accuracy compared with neat, undiluted peroxide. This dilution also helps moderate the rate of heat release during decomposition, supporting safer processing at scale and reducing the risk of localized hot spots within large batches or reactors.
As a liquid initiator, Perovion BPIC L75 is metered directly into resin or monomer systems without requiring a room-temperature accelerator, since it is designed to activate thermally. In unsaturated polyester curing applications, Perovion BPIC L75 is typically used within a defined hot-press temperature window, while in polymerization applications it is dosed according to the target molecular weight, conversion rate, and reaction temperature of the process.
Key Features
- Aliphatic Percarbonate Chemistry: Perovion BPIC L75 belongs to the percarbonate class of organic peroxides, giving it a distinct decomposition profile suited to specific temperature windows in both resin curing and monomer polymerization.
- 75% Active Solution: Supplied as a 75% active solution in an inert hydrocarbon carrier, Perovion BPIC L75 offers improved handling safety and more accurate dosing than undiluted peroxide concentrates.
- Dual-Purpose Initiator: Perovion BPIC L75 functions both as a curing agent for unsaturated polyester resins in hot press moulding and as a polymerization initiator for styrene and related vinyl monomers.
- Defined Activation Temperature Window: Perovion BPIC L75 is designed to activate within a specific elevated-temperature range, supporting predictable gel and cure timing in thermoset processing.
- Consistent Batch-to-Batch Quality: Tight control over active content and carrier composition in Perovion BPIC L75 supports reproducible reaction kinetics and part quality across production batches, helping processors minimize cycle-to-cycle variation.
Typical Applications
Perovion BPIC L75 functions as a thermally activated curing initiator for unsaturated polyester resin systems processed by hot press moulding, providing a defined decomposition profile suited to compression moulding cycles. Its aliphatic percarbonate chemistry also makes it applicable to the polymerization and copolymerization of styrene and related monomers in polymer production processes, including specialty resins and modified thermoplastic systems.
Common end uses for Perovion BPIC L75 include hot-press moulded thermoset composite parts for automotive and electrical applications, as well as polymer production processes for styrene-based and related vinyl polymers. It is also applicable to specialty polymerization systems requiring an aliphatic percarbonate initiator with a well-defined activation temperature, supporting process engineers who need predictable onset of cure or polymerization.
Technical Specifications
- Chemical Type: tert-Butylperoxy isopropyl carbonate (TBPIC)
- CAS No.: 2372-21-6
- Physical Form: Liquid solution
- Active Content: Approximately 75% in an inert hydrocarbon carrier (indicative for this grade; to be confirmed based on the final specification sheet)
- Theoretical Active Oxygen: Approximately 9.08% (indicative for this grade; to be confirmed based on the final specification sheet)
- Recommended Cure Temperature Range: Approximately 120-170°C for unsaturated polyester curing (indicative; to be confirmed based on the final specification sheet)
- Recommended Polymerization Temperature Range: Approximately 95-125°C for styrene polymerization (indicative; to be confirmed based on the final specification sheet)
- Density at 20°C: To be confirmed based on the final specification sheet.
Thermal Stability
- Organic peroxides, including Perovion BPIC L75, are thermally unstable substances and must be handled and stored with appropriate care at all times to avoid accidental decomposition.
- Self-Accelerating Decomposition Temperature (SADT): To be confirmed based on the final specification sheet.
Storage Recommendations
- Recommended maximum storage temperature: To be confirmed based on the final specification sheet.
- Store in a dry, well-ventilated area away from heat sources, direct sunlight, and ignition sources.
- Keep containers tightly closed and stored upright to prevent leakage and contamination, and label partially used containers clearly.
- Avoid contact with reducing agents, acids, alkalis, and heavy metal compounds that can accelerate decomposition.
- Rotate stock on a first-in, first-out basis and inspect containers periodically for signs of leakage, swelling, or damage.
Packaging & Transport
- Standard Packaging: Available in approved industrial packaging, such as polyethylene containers or drums; exact options to be confirmed based on the final specification sheet.
- Net Weight: To be confirmed based on the final specification sheet.
- UN Number: To be confirmed based on the final specification sheet.
- Transport Classification: Organic Peroxide Type C (indicative for this grade; to be confirmed based on the final specification sheet).
- Certificate of Analysis (COA): Provided per batch upon shipment, confirming active content and key quality parameters.
- Documentation: Labels and Safety Data Sheet (SDS) prepared in accordance with transport and destination regulations; industrial and professional use only.
Perovion BPIC L75: Safety & Handling
Perovion BPIC L75 should be handled in accordance with applicable safety procedures for organic peroxides. The product is classified as an oxidizing and thermally unstable material and requires appropriate storage, segregation, and handling measures to prevent accidental decomposition or contamination. Users are advised to review the Safety Data Sheet prior to handling and to implement suitable personal protective equipment and engineering controls, including eye protection, chemical-resistant gloves, and adequate ventilation in the work area, particularly given its hydrocarbon carrier solvent.
Spills should be contained and cleaned up promptly using absorbent materials compatible with organic peroxides, and contaminated waste should be disposed of according to local regulations and destination-specific environmental requirements. Safety Data Sheet and destination-compliant labeling information for Perovion BPIC L75 are available upon request. For related products, see also Perovion TBPB LC and Perovion TBPIN L42.