Perovion DHBP P10-50D is a powder-form organic peroxide containing 50% of 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane (DHBP) dispersed on an inert mineral carrier system. As a bifunctional peroxide with excellent scorch safety up to 135°C, Perovion DHBP P10-50D is used for the crosslinking of natural and synthetic rubbers including EPDM, FKM, HNBR, and silicone rubber, as well as thermoplastic polyolefins and polyolefin elastomers. The higher active content of 50% allows formulators to achieve target crosslink density at lower loadings compared to lower-concentration grades, and under certain conditions one-step mixing into the rubber compound is possible.
Key Features
- 50% Active Content on Inert Mineral Carrier: Perovion DHBP P10-50D delivers 50% of the active DHBP peroxide on an inert mineral carrier with an active oxygen content of 5.40–5.62%. The higher active loading relative to 45% grades allows for proportionally lower dosage levels in compound formulations, which can reduce the residual carrier content in the cured article and simplify formulation adjustments when switching between concentration grades.
- One-Step Mixing Capability: Under certain compounding conditions, Perovion DHBP P10-50D supports one-step mixing into rubber compounds, combining the incorporation of the peroxide crosslinker with other compound components in a single mixing pass. This capability can streamline compound preparation workflows, reduce cycle times, and lower the risk of staging-related batch-to-batch variability in production environments.
- Excellent Scorch Safety up to 135°C: Rubber compounds prepared with Perovion DHBP P10-50D exhibit excellent scorch safety, with a rheometer ts2 exceeding 20 minutes at 135°C under standard test conditions. This processing stability allows compounders to carry out mixing, calendering, and extrusion operations at elevated temperatures without risk of premature cure, maintaining compound flow properties and dimensional consistency throughout pre-forming operations.
- Broad Rubber and Polyolefin Substrate Compatibility: Perovion DHBP P10-50D is effective for crosslinking a wide range of elastomer and polymer substrates: EPDM, FKM, HNBR, silicone rubber, POE, natural rubber, and rubber specialties, as well as thermoplastic polyolefins. This broad compatibility supports manufacturers working across multiple compound families and product lines who require a single crosslinking agent with consistent performance characteristics.
- Bifunctional DHBP for Efficient, Dense Crosslink Networks: As a bifunctional peroxide, DHBP generates two reactive radical centers per molecule upon thermal decomposition, delivering efficient crosslink network formation in rubber matrices at the 175°C cure temperature. Vulcanizates produced with Perovion DHBP P10-50D show good tensile strength, compression set resistance, thermal aging stability, and long-term property retention in demanding service environments.
Typical Applications
Perovion DHBP P10-50D is incorporated into rubber compounds in open-mill or internal mixer operations, where the inert mineral carrier supports homogeneous distribution of the active DHBP throughout the elastomer matrix. Upon cure at approximately 175°C — with a rheometer t90 of around 12 minutes — the peroxide produces thermally stable vulcanizates with controlled crosslink density and minimal reversion. The peroxide crosslinking route eliminates sulfur-related discoloration, blooming, and residual odor, making it suitable for colored, transparent, and odor-sensitive compound applications as well as articles requiring stable mechanical properties after long-term heat aging.
End-use applications include EPDM weatherstripping, profiles, and roofing membranes for construction and automotive sealing; FKM and HNBR seals, O-rings, and gaskets for oil, fuel, and chemical resistance; silicone rubber articles requiring peroxide cure for high-temperature service; POE and polyolefin elastomer foam and crosslinked film; specialty elastomer compounds for industrial and automotive applications where sulfur-free vulcanization is specified; and thermoplastic polyolefin crosslinking for wire insulation, pipe, and film applications. The product is available for the Asia, Asia Pacific, Africa, Europe, and India markets.
Technical Specifications
- Chemical Type: 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane (DHBP) on inert carrier
- Appearance: White to off-white free-flowing powder
- Active Content: 50%
- Total Active Oxygen: 5.40–5.62%
- Density at 20°C: To be confirmed based on the final specification sheet.
- Viscosity at 20°C: N/A — solid powder form
- Water Content: 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: 20 kg
- Net Weight: 20 kg
- UN Number: To be confirmed based on the final specification sheet.
- Transport Class: To be confirmed based on the final specification sheet.
Perovion DHBP P10-50D: Safety & Handling
Perovion DHBP P10-50D should be handled in accordance with applicable safety procedures for organic peroxides. Users are advised to review the Safety Data Sheet prior to handling and to implement appropriate personal protective equipment and engineering controls as specified therein.
Safety Data Sheet and destination-compliant labeling information are available upon request. For related products, see also Perovion TMCH L29 and Perovion DCP PBC.