Perovion BPO P-GB is a free-flowing 50% benzoyl peroxide (BPO) granule initiator on a phthalate-free carrier, used for curing unsaturated polyester resins and (meth)acrylic resins at ambient and elevated temperatures.
Key Features
- Free-flowing granular form: Fine, free-flowing granular powder that offers convenient handling and dosing in thermoset composite manufacturing processes.
- Phthalate-free carrier: Formulated on a phthalate-free carrier, supporting compliance with environmental and regulatory requirements in resin systems.
- Excellent solubility in resin systems: Dissolves clearly in the resin, making it suitable for acrylic resin applications where a high degree of optical transparency is required in cured parts.
- Flexible cure temperature range: Can be used at ambient temperatures with an aromatic tertiary amine accelerator, and at elevated temperatures above 80°C without the need for an accelerator.
- Wide process compatibility: Applicable across a broad range of thermoset composite production methods including hand lay-up, filament winding, pultrusion, and resin transfer molding.
Typical Applications
Perovion BPO P-GB is used as a curing initiator in unsaturated polyester and (meth)acrylic resin systems across thermoset composite applications. At processing temperatures up to 80°C, it is used in combination with an aromatic tertiary amine accelerator; above 80°C, no accelerator is required.
Typical end-use applications include engineered stone, gelcoats, continuous laminating, pultrusion, filament winding, resin transfer molding (RTM), vinyl ester systems, acrylic road marking and flooring, chemical anchors and mine bolts, and hand lay-up and spray-up processes.
Technical Specifications
- Chemical Type: Dibenzoyl peroxide (BPO), 50% active content on phthalate-free carrier
- Appearance: White to off-white free-flowing granular powder
- Dibenzoyl Peroxide Content: 50% (min.)
- Water Content: Max. 0.5%
- Active Oxygen Content: 3.3% (min.)
- Bulk Density: Approx. 640 kg/m³ (poured); density 1.322 g/cm³
Thermal Stability
- Organic peroxides are thermally unstable substances and must be handled with appropriate care.
- SADT: 55°C
Storage Recommendations
- Recommended maximum storage temperature: 25°C; shelf life at least 12 months under recommended conditions
- 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: Non-returnable cardboard box
- Net Weight: 25 kg
- UN Number: UN 3106
- Transport Class: Organic peroxide type D, solid; Division 5.2
Decomposition Products
Under normal storage and use, Perovion BPO P-GB decomposes to release carbon dioxide, benzene, benzoic acid, diphenyl, and phenylbenzoate. These decomposition products should be considered when assessing ventilation and fire response for storage areas holding this organic peroxide.
Why Choose Perovion BPO P-GB
Composite fabricators choosing a benzoyl peroxide initiator for polyester and acrylic resin systems need consistent particle size, clean dissolution, and predictable reactivity batch to batch. Perovion BPO P-GB is manufactured as a free-flowing granular powder specifically to reduce dust generation and simplify metering compared with older paste-based BPO initiators.
The phthalate-free carrier system also supports resin formulators working under tightening restrictions on phthalate plasticizers in construction, marine, and consumer-facing composite parts. Combined with its clear dissolution in acrylic resin, Perovion BPO P-GB is well suited to applications such as cast acrylic sheet, engineered stone, and transparent gelcoat systems where haze or residue from the initiator carrier is not acceptable.
For general background on how organic peroxide classification (Type C/D/E/F) and UN packing groups are determined, see the UNECE Recommendations on the Transport of Dangerous Goods, which form the basis for the UN 3106 classification referenced above.
Safety & Handling
Perovion BPO P-GB should be handled in accordance with applicable safety procedures for organic peroxides.
Safety Data Sheet and destination-compliant labeling information should be reviewed before use and are available upon request. For related products, see also Perovion AAP-TBPB L27 and Perovion MEKP L50R.