Perovion BPO PA-BT

Phthalate-Free BPO Paste for Unsaturated Polyester Resin Curing

Perovion BPO PA-BT is a phthalate-free 50% dibenzoyl peroxide paste formulated in dipropylene glycol dibenzoate and water, designed for curing unsaturated polyester resins at ambient and elevated temperatures, with particular suitability for putty, marine, and automotive composite applications.

Key Features

Phthalate-free carrier: Formulated in dipropylene glycol dibenzoate and water without phthalate plasticizers, supporting compliance with environmental and regulatory requirements in resin formulations. This carrier system is consistent with industry trends toward phthalate-free product design.
Paste form suitable for tube and cartridge filling: The paste consistency of Perovion BPO PA-BT is well-suited for tube filling and cartridge-based dispensing systems used in putty and body filler applications. Its good chemical and physical stability contributes to consistent performance throughout the product’s shelf life.
Fast, humidity-resistant cure with amine accelerator: When used with an aromatic tertiary amine accelerator, Perovion BPO PA-BT delivers a rapid cure that is largely unaffected by humidity levels and filler loading. This characteristic makes it reliable for use in both controlled manufacturing environments and field-applied putty scenarios.
Flexible cure temperature range: Effective at ambient temperatures in combination with an aromatic tertiary amine accelerator, and operable at elevated temperatures above 80°C without an accelerator. This flexibility supports use across a range of processing temperatures and curing system designs.
Low-temperature curing capability: Perovion BPO PA-BT provides workable cure performance even at reduced ambient temperatures, making it suitable for seasonal outdoor applications and cold-environment production settings where consistent polyester resin cure is required.

Typical Applications

Perovion BPO PA-BT is used as a curing initiator in paste-form unsaturated polyester resin systems, operating through radical generation to initiate crosslinking of the resin matrix. At processing temperatures up to 80°C, it is used with an aromatic tertiary amine accelerator; above 80°C, no accelerator is required. The product has been developed primarily for the putty market, where paste-form peroxides offer handling and dispensing advantages over granule or liquid formulations.

Typical end-use applications include automotive body filler and putty compounds, marine filler and repair materials, filled polyester composite systems, and general-purpose polyester resin curing in tube-dispensed or cartridge-format products. Perovion BPO PA-BT is particularly suited to high-filler resin systems where consistent cure is required regardless of moisture exposure.

Technical Specifications

Chemical Type: Dibenzoyl peroxide (BPO), 50% paste in dipropylene glycol dibenzoate and water
Appearance: Yellow paste
Active Content: 50% dibenzoyl peroxide
Total Active Oxygen: 3.20–3.37%
Density at 20°C: To be confirmed based on the final specification sheet.
Viscosity at 20°C: To be confirmed based on the final specification sheet.
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: Plastic pails
Net Weight: 20 kg
UN Number: UN 3108
Transport Class: Organic peroxide type E, solid; Division 5.2