Perovion TEPO S30 is a triperoxonane-based organic peroxide, 3,6,9-triethyl-3,6,9-trimethyl-1,4,7-triperoxonane (TEPO), supplied as a bead-form masterbatch for the production of controlled rheology polypropylene (CR-PP) and for reducing the melt flow index (MFI) of recycled polyethylene. Perovion TEPO S30 is a highly efficient peroxide formulation used in extrusion processes typically operating in the 200-250°C range, giving polypropylene producers precise control over final melt flow properties. This level of control is important because even small deviations in MFI can affect downstream processing behavior, from fiber spinning speed to injection molding cycle times.
Perovion TEPO S30 Overview
Perovion TEPO S30 works by initiating controlled chain scission of polypropylene during melt extrusion, breaking down high molecular weight chains to narrow the molecular weight distribution and increase melt flow index in a predictable, controllable way. Small changes in either peroxide concentration or process temperature can produce significantly different MFI results, giving compounders fine control over the final polymer’s processability.
Supplying the peroxide as a bead-form masterbatch rather than as a neat liquid allows more accurate dosing into the extruder and a more homogeneous distribution of active peroxide throughout the polypropylene melt, which supports batch-to-batch consistency in the finished resin. Consistent MFI from batch to batch reduces the need for downstream processors to make frequent equipment adjustments, supporting smoother production runs and fewer off-specification rejects.
Formulators new to peroxide-controlled rheology processing should note that the relationship between dosage, extruder temperature profile, and residence time all influence the final degree of chain scission achieved. Working with a supplier that can advise on typical dosage ranges for a target MFI helps shorten the qualification process when introducing this grade into an existing extrusion line, and can reduce the number of trial runs needed before full-scale production begins, saving both material and machine time during scale-up.
Key Features
- Precise MFI control: Perovion TEPO S30 allows polypropylene producers to fine-tune melt flow index through small adjustments to peroxide dosage or process temperature.
- Bead-form masterbatch: The solid bead carrier form improves dosing accuracy and gives more homogeneous peroxide distribution than direct liquid injection.
- Efficient controlled degradation: Promotes controlled chain scission during extrusion, narrowing molecular weight distribution for improved processability.
- Dual polymer application: Suitable for both controlled rheology polypropylene production and MFI reduction of recycled polyethylene, giving processors flexibility across resin streams.
- Defined processing range: Formulated for use in extrusion processes typically operating between 200°C and 250°C, supporting predictable process design, which helps engineering teams plan extruder screw design, temperature zones, and residence time in new or retrofitted lines.
Typical Applications
Perovion TEPO S30 is used primarily in the production of controlled rheology polypropylene, commonly known as CR-PP, where reactor-grade polypropylene is degraded to a narrower molecular weight distribution and higher melt flow index suited to specific downstream processes such as fiber spinning, injection molding, and nonwoven fabric production.
It is also applied in the recycling stream to reduce the melt flow index of recycled polyethylene, helping recyclers restore processability to reclaimed resin that may have become excessively high in molecular weight or degraded unevenly during prior use, improving its suitability for reprocessing into new products. This is an increasingly important application as demand grows for recycled content in packaging and other polyolefin end uses, where consistent processability is essential to meet quality specifications set by brand owners and regulators alike.
Fiber and nonwoven producers in particular rely on tightly controlled MFI and molecular weight distribution to achieve consistent spinning performance, making a predictable and well-characterized peroxide degradation agent an important part of the overall process control strategy, alongside temperature control and screw design in the extrusion line, all of which interact to determine final product consistency.
Technical Specifications
- Chemical Type: 3,6,9-Triethyl-3,6,9-trimethyl-1,4,7-triperoxonane (TEPO), masterbatch on polypropylene beads
- CAS Number: 24748-23-0
- Physical Form: Solid beads (polypropylene-carried masterbatch)
- Active Content: To be confirmed based on the final specification sheet.
- Recommended Processing Temperature: Approximately 200°C to 250°C
- Total Active Oxygen: To be confirmed based on the final specification sheet.
Thermal Stability
- Organic peroxides are thermally unstable substances and must be handled with appropriate care.
- 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 and direct sunlight.
- Keep containers tightly closed.
- Avoid contact with reducing agents, acids, alkalis, and heavy metal compounds.
Packaging & Transport
- Standard Packaging: 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: Organic peroxide (classification to be confirmed based on the final specification sheet)
Facilities running both virgin CR-PP production and recycled polyethylene MFI reduction often value having a single, well-documented peroxide masterbatch that can support both process streams, which can reduce the complexity of qualifying separate degradation agents for each application. First-in, first-out stock rotation and dating of containers on receipt are recommended for this product, particularly for facilities that maintain larger safety stock of processing aids.
Perovion TEPO S30: Safety & Handling
Perovion TEPO S30 should be handled in accordance with applicable safety procedures for organic peroxides. The product is classified as an oxidizing material and requires appropriate storage and handling measures, including keeping it segregated from reducing agents, accelerators, and other incompatible substances.
Users, particularly those new to handling peroxide masterbatches, are advised to review the Safety Data Sheet carefully prior to handling and to implement appropriate personal protective equipment and engineering controls as specified therein, including dust control measures during handling and dosing. Safety Data Sheet and destination-compliant labeling information are available upon request, and should be reviewed by all personnel before first use at a new site, with periodic refresher training recommended for staff who handle organic peroxide masterbatches only occasionally. For related polyolefin-modification peroxide grades, see also Perovion BIBP F14 and Perovion DHBP L10.