Introduction to BIPB 96%

Bis(Tert-Butyl Peroxyisopropyl)Benzene, commonly known as BIPB, particularly in its 96% purity form, stands as a highly effective and versatile organic peroxide crosslinking agent. This white, powdery substance plays a crucial role in the polymer industry by facilitating the crosslinking of various elastomers and thermoplastics. Crosslinking is a chemical process that creates stronger, more durable bonds between polymer chains, fundamentally altering the physical properties of the material. The result is enhanced mechanical strength, improved heat resistance, reduced compression set, and better overall performance in demanding applications.

With a Chemical Abstracts Service (CAS) number of 2212-81-9 and an EINECS number of 218-664-7, BIPB 96% has a well-established identity in the chemical landscape. Its chemical formula, C20H34O4, and molecular weight of 338.5 underscore its complex structure designed for efficient peroxide decomposition at elevated temperatures, initiating the radical reactions necessary for crosslinking. The product's active oxygen content, typically ranging from 9.08% to 9.45%, is a key indicator of its crosslinking efficiency.

Key Properties and Characteristics

BIPB 96% exhibits a melting point between 46°C and 50°C, distinguishing it as a solid at standard room temperature. Its density is approximately 1.08, and it possesses a relatively high boiling point of 360°C and a flash point of 113°C. A critical parameter for its application is the 10-hour half-life temperature, which is 114°C. This temperature indicates the point at which half of the peroxide molecules will decompose within a ten-hour period, providing guidance for processing temperatures and reaction times. Typical crosslinking temperatures using BIPB 96% are in the range of 170°C to 185°C, where rapid and effective curing occurs.

The efficacy of BIPB 96% as a crosslinking agent stems from its thermal decomposition into free radicals. These radicals then abstract hydrogen atoms from polymer chains, creating macroradicals on the polymer backbone. These macroradicals subsequently combine, forming stable carbon-carbon crosslinks between adjacent polymer chains. This process transforms the linear or branched polymer structure into a three-dimensional network, significantly improving its elastic and mechanical properties.

Broad Range of Applications

The versatility of BIPB 96% makes it suitable for a wide array of elastomers and polymers. Prominent among these are Ethylene Propylene Diene Monomer (EPDM) rubber, Ethylene Vinyl Acetate (EVA) copolymer, NYLON elastomer, Polyolefin Elastomer (POE), Olefin Block Copolymer (OBC) elastomer, Silicone rubber, Hydrogenated Butadiene Rubber, Fluorine rubber, Perfluoro rubber, Chlorinated Polyethylene, and XPU Polyurethane rubber. Its application extends across numerous industries, proving particularly valuable in the manufacture of articles requiring enhanced physical performance and durability.

A significant area of application is the footwear industry, specifically in the production of shoe midsoles and insoles made from EVA and other foamable polymers. BIPB 96% is extensively used in Injection Phylon (IP) and Molded EVA (MD) processes, as well as general foaming applications. It ensures consistent cell structure, improved resilience, and enhanced mechanical integrity of foamed products. Beyond footwear, BIPB 96% finds use in wires and cables, profiles, hoses, sheets, and other molded or extruded rubber and plastic articles where high performance is critical.

Handling, Storage, and Packaging

Given its chemical nature, proper handling and storage of BIPB 96% are paramount to ensure product stability, safety, and performance. The material should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and heat sources. It is essential to keep packaging sealed to prevent contamination and decomposition. BIPB 96% must be stored separately from incompatible materials, including reducing agents, acids, alkalis, heavy metal compounds, and other substances that could catalyze its decomposition. Recommended storage temperatures are below 38°C to maintain product integrity over time.

The product is typically supplied in secure packaging designed for safe transport and storage. Inner packaging consists of transparent PE bags, which are then placed within sturdy carton boxes. A common configuration involves 2 bags, each containing 10 kg of material, per carton, resulting in a net weight of 20 kg per carton. The carton dimensions are approximately 54.00 cm x 36.00 cm x 25.50 cm, with a gross weight around 21.500 kg. For larger shipments, cartons are often palletized on plastic pallets measuring about 110 cm x 110 cm x 15 cm. A typical pallet load might consist of 48 cartons, stacked to a height of roughly 225.5 cm, occupying a volume of approximately 2.8 cubic meters. Standard 20-foot containers can accommodate about 9.6 tonnes of BIPB 96% (480 cartons across 10 pallets), while 40-foot containers can hold roughly 19.2 tonnes.

Sourcing High-Quality BIPB 96%

The availability of high-purity BIPB 96% is crucial for manufacturers relying on consistent crosslinking performance. Sourcing from a reputable manufacturer or trusted supplier is essential to ensure the product meets stringent quality standards and specifications like CAS number, purity level, active oxygen content, and particle size. Understanding the typical price points in the market requires engagement with various suppliers, and inquiries about minimum order quantities (MOQ) and logistics are standard parts of the procurement process. For businesses looking to buy or purchase this advanced crosslinking agent, investigating the supplier's production capacity, quality control procedures, and ability to handle necessary transport and storage requirements is vital. Finding a reliable partner is key to securing a consistent supply of this critical raw material for enhancing polymer and rubber properties.

This document was prepared by NINGBO INNO PHARMCHEM CO.,LTD.