Perovion CHP L90 is a liquid organic peroxide based on cumyl hydroperoxide (CHP) chemistry, supplied at a higher active content than standard CHP grades for use as a radical initiator in polymerization and curing processes. Perovion CHP L90 supports emulsion, solution, and bulk polymerization of styrene, butadiene, acrylonitrile, and (meth)acrylate monomers, delivering stronger initiation strength than lower-concentration hydroperoxide grades. Perovion CHP L90 is also used for curing vinyl ester resins when combined with a cobalt accelerator, giving it a dual role across polymer production and thermoset composite processing that supports both high-throughput manufacturing and demanding corrosion-resistant applications.
Perovion CHP L90 Overview
Cumyl hydroperoxide is a hydroperoxide-type organic peroxide derived from cumene, offering a broad effective decomposition temperature range compared with many other peroxide classes. Perovion CHP L90 is formulated at a higher active content than standard CHP grades, giving it a stronger initiation strength and typically faster reaction rates in comparable polymerization and curing systems. This higher concentration makes Perovion CHP L90 well suited to applications where efficient radical generation and reduced dosing volumes are priorities, helping formulators simplify handling logistics and storage footprint.
As a liquid initiator, Perovion CHP L90 is metered directly into polymerization reactors according to the target reaction temperature and desired molecular weight. In vinyl ester resin curing applications, Perovion CHP L90 is typically used together with a cobalt accelerator system to achieve the desired gel and cure profile for thermoset composite manufacturing, often at lower dosage levels than standard-concentration CHP grades due to its higher active content, which can also translate into freight and packaging efficiencies for high-volume users.
Key Features
- Higher Active Content: Perovion CHP L90 carries a higher active content than standard CHP grades, supporting stronger initiation strength and more efficient radical generation in polymerization and curing systems.
- Broad Effective Temperature Range: Perovion CHP L90 can support effective polymerization initiation across a wide temperature window when no accelerator is used, giving formulators flexibility across different reactor conditions.
- Reduced Dosing Volume: Due to its higher active content, Perovion CHP L90 can often be used at lower dosage volumes than standard-concentration CHP grades to achieve comparable initiation performance.
- Vinyl Ester Curing Capability: In addition to polymerization initiation, Perovion CHP L90 functions as a curing agent for vinyl ester resin systems when combined with a cobalt accelerator.
- Suitable for Multiple Polymerization Methods: Perovion CHP L90 is applicable to emulsion, solution, and bulk polymerization processes, giving process engineers flexibility to match the initiator to their specific production method and reactor configuration.
Typical Applications
Perovion CHP L90 functions as a radical initiator for emulsion, solution, and bulk polymerization of styrene, butadiene, acrylonitrile, and (meth)acrylate monomers, supporting the production of a wide range of specialty and commodity polymers where a higher-active initiator is preferred. Its broad effective temperature range makes it adaptable to reactor designs operating from moderate to elevated temperatures.
Common end uses for Perovion CHP L90 include polymer production and modification, curing of vinyl ester resins in thermoset composite applications for corrosion-resistant equipment, and specialty polymer systems requiring a higher-concentration hydroperoxide-type initiator. It is also applicable to processes where reduced dosing volume or faster initiation is desired compared with standard CHP grades.
Technical Specifications
- Chemical Type: Cumyl hydroperoxide (CHP)
- CAS No.: 80-15-9
- Physical Form: Liquid
- Active Content: Higher than standard CHP grades (indicative for this grade; to be confirmed based on the final specification sheet)
- Effective Initiation Temperature Range: Approximately 50-200°C without accelerator (indicative; to be confirmed based on the final specification sheet)
- Bulk Polymerization Temperature Range: Approximately 60-100°C for styrene and methyl methacrylate (indicative; to be confirmed based on the final specification sheet)
- Shelf Life: Approximately 3 months under recommended storage conditions (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 CHP L90, 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, except where a controlled accelerator system is intended.
- 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 drums or IBCs; 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 Class: 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 CHP L90: Safety & Handling
Perovion CHP L90 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, particularly given its higher active content relative to standard CHP grades. 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.
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 CHP L90 are available upon request. For related products, see also Perovion CHP L80 and Perovion TBHP L70.