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Bis(tert-butylperoxyisopropyl)benzene (BIPB), also known as Di(tert-butylperoxyisopropyl)benzene, is a white crystalline powder organic peroxide. It is commonly used as an odorless crosslinking agent and initiator for polymer materials (such as polyethylene and rubber). Its molecular formula is C20H34O4. It is flammable and requires low-temperature, airtight storage. Its main uses are in the crosslinking and vulcanization reactions of plastics and rubber to improve material properties.
High crosslinking efficiency: BIPB forms a network structure more effectively during polymer crosslinking, resulting in better physical properties.
Excellent physical properties: High heat resistance: Improves the stability of the material at high temperatures.
Excellent low-temperature performance: Gives products better low-temperature bending (flexural) properties, making them less prone to brittleness.
Outstanding resistance to compressive deformation: Improves the resilience of the material under pressure, providing strong resistance to deformation.
Environmentally friendly and non-toxic: Compared to DCP, BIPB products have very little odor, making them more environmentally friendly and human-friendly, aligning with the trend of green chemical development.
High purity: High purity (e.g., 96%) specifications are usually available to ensure effective crosslinking.
Molecular Formula | C20H34O4 |
Molecular Weight | 338.5 |
Theoretical Reactive Oxygen Quantity | 9.45% |
Appearance | White solid powder or flaky solid |
Content | 96% min |
CAS No. | 25155-25-3 |
UN No. | 3106 |
Einecs | 218-664-7 |
It is an excellent degradation agent for polypropylene: It can produce rheology polypropylene with low molecular weight and narrow molecular weight distribution and high melt index, making it a very important initiator for controlled rheology polypropylene.
It is an initiator for styrene polymerization. This product is an initiator for bulk polymerization of styrene, characterized by the formation of PS with a higher molecular weight and higher polymerization conversion rate compared to thermally initiated polymerization.
It is the most common rubber vulcanizing agent: This product has excellent scorch safety. It is usually diluted with silicone oil or other neutral solvents or neutral fillers. The safe processing temperature is 135°C, and the crosslinking temperature is 175°C.
BIPB is used for crosslinking natural rubber, synthetic rubber, and thermoplastic polyolefins. Rubber compounds containing BIPB exhibit excellent scorch resistance and can be compounded in one step under specific conditions. Safe processing temperature: 135°C (rheometer ts2 > 20 minutes). Typical crosslinking temperature: 175°C (rheometer t90 approx. 12 minutes).
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