Tree Chem manufactures Bis(3-Methoxybutyl) Peroxydicarbonate (MOBPC) under strict quality standards to ensure consistent peroxide activity and minimal hydrolysable chloride (≤500 mg/kg). This product is characterized by clear appearance, good miscibility, and predictable decomposition temperature, making it suitable for emulsion and suspension polymerization.
It is widely applied in the production of polyvinyl chloride, copolymers, and acrylates, offering high polymer uniformity and low residual odor. Tree Chem provides MOBPC in 20 kg polyethylene drums and can customize packaging size according to customer needs. For inquiries or application guidance, please contact rocket@cntreechem.com.
Specification
Basic Information
| Item | Details |
| Product Name | Bis(3-Methoxybutyl) Peroxydicarbonate |
| Synonyms | MOBPC; Peroxydicarbonic acid, bis(3-methoxybutyl) ester; 3-Methoxybutyl peroxydicarbonate; Peroxydicarbonate, bis(3-methoxybutyl); Di(3-methoxybutyl) peroxydicarbonate |
| CAS No. | 52238-68-3 |
| EINECS No. | 257-773-4 |
| Molecular Formula | C₁₀H₂₀O₈ |
| Appearance | Clear liquid |
| Packaging | 20 kg polyethylene drum or as per customer request |
Technical Specification
| Parameter | Typical Data |
| Appearance | Clear liquid |
| Content (%) | 49.0–51.0 |
| Inorganic and organic hydrolysable chlorine (mg/kg) | ≤500 |
Applications
PVC Polymerization
- Di(3-methoxybutyl) peroxydicarbonate (MOBPC) is a highly efficient free-radical initiator widely used in suspension polymerization of PVC, operating effectively between 45 °C and 60 °C. Its one-hour half-life temperature of about 57 °C allows polymerization under mild conditions, reducing energy consumption and preventing thermal runaway. MOBPC provides precise molecular-weight control and produces PVC with a narrow particle-size distribution, minimal fisheyes, and consistent mechanical performance.
- When used in blends with EHP (Di-2-ethylhexyl peroxydicarbonate) or CIPP (Cumyl Peroxyneodecanoate), MOBPC shows synergistic initiation behavior, enhancing polymerization rate, resin transparency, and overall productivity in medium- and low-temperature PVC processes.
Rubber Vulcanization and Crosslinking
- MOBPC functions as a low-temperature peroxide crosslinking agent for elastomers such as EPDM, NBR, VMQ, and TPE. It decomposes at 120–160 °C to generate radicals that form C–C bonds, improving heat resistance, tensile strength, and compression-set performance.
- In silicone rubber, its mild decomposition profile enables two-stage vulcanization (150 °C × 10 min + 200 °C × 4 h), yielding transparent, elastic, non-yellowing products. When combined with co-agents such as TAIC or TMPTMA, MOBPC further increases crosslink density and enhances thermal-aging stability.
Resin and Coating Curing
- MOBPC serves as an efficient initiator for curing unsaturated polyester resins (UPR) and vinyl ester resins, especially in medium-temperature curing systems (60–100 °C). It generates radicals evenly, ensuring uniform gelation and minimal residual monomer.
- In marine, automotive, and coil coatings, MOBPC provides strong chemical resistance, high gloss, and superior surface hardness. Its clean decomposition minimizes residues, maintaining optical clarity in transparent and color-sensitive applications.
New Energy Materials
- MOBPC is increasingly applied in photovoltaic EVA encapsulant films, where its decomposition temperature matches the EVA lamination range (140–150 °C). It enables efficient crosslinking and high gel content (≥ 85 %), yielding films with > 91 % transmittance and low haze.
- It is also used in battery-separator modification and epoxy-composite curing for wind-turbine blades and electronic encapsulants, providing low residual oxygen and high thermal stability. High-purity MOBPC (≥ 99.99 %) meets stringent semiconductor and optical-material specifications.
Storage & Handling
- Store in cool, ventilated, and shaded areas away from heat and direct sunlight.
- Keep containers tightly sealed and free from contaminants.
- Avoid contact with acids, alkalis, or reducing materials.
- Maintain temperature stability and follow organic peroxide safety guidelines.
Usage Notice
- Use only under professional supervision.
- Prevent exposure to high temperatures or open flames.
- Handle with grounded tools and avoid impact or friction.
- Dispose of residues according to local environmental regulations.
- PVC suspension polymerization: MOBPC 0.03 wt % + vinyl chloride 99.97 wt %; acts as a low-temperature initiator at 50–60 °C, providing stable polymerization and uniform molecular weight.
- PVC mass polymerization: MOBPC 0.02 wt % + monomer 99.98 wt %; initiates reaction at 60–70 °C with excellent heat control and clarity.
- PVC copolymer blend system: MOBPC 0.015 wt % + EHP 0.025 wt %; the blend achieves smooth reaction and reduced residual monomer.
- EPDM rubber compound: MOBPC 2.0 phr + TAIC 1.0 phr; produces tight C–C crosslinking for enhanced heat and chemical resistance.
- Silicone rubber formulation: MOBPC 3.0 phr in 50 % emulsion + 100 phr base; vulcanizes at 150 °C then post-cures at 200 °C, resulting in transparent, elastic rubber.
- UPR curing system: MOBPC 1.5 wt % + unsaturated polyester resin 98.5 wt %; enables medium-temperature curing with smooth surface finish and low residual styrene.
- SMC/BMC molding compound: MOBPC 2.0 wt % in resin matrix; reduces curing time and improves mechanical strength in composites.
- EVA encapsulant film: MOBPC 1.0 wt % + EVA 99.0 wt %; achieves > 85 % gel content and > 91 % transmittance after lamination at 145 °C.
- Battery binder formulation: MOBPC 0.2 wt % + PVDF 99.8 wt %; enhances adhesion and film integrity in electrode coatings.
Packaging
- 20 kg polyethylene drum
- Custom packaging available upon request
