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4020 (6PPD)

4020 (6PPD)

4020 (6PPD) is a versatile rubber antioxidant presented as purple-brown to dark-brown granules or flakes. With a minimum assay of 96.0%, a freezing point of 45.0℃, a maximum heating loss of 0.50%, and an ash content not exceeding 0.20%, it showcases exceptional stability and reliability. In its pure form, 6PPD is a white solid gradually oxidizing to brown when exposed to air, while the industrial variant appears as purple-brown to black-brown granules or flakes.

Soluble in various organic solvents but insoluble in water, it offers compatibility with rubbers, low toxicity, and excellent antioxidant properties. 6PPD serves as a reliable solution against flex cracks, insolation cracks, and the harmful effects of toxic metals, making it suitable for a wide range of synthetic and natural rubber applications, including tires. Packaged in 20kg or 25kg kraft paper bags, it ensures ease of handling and transportation.

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Functions and Characteristics

Appearance Purple brown to dark brown granules or flakes
Assay, % ,min
(Area normalization method)
Freezing point, ℃, min 45.0
Heating Loss, %, max 0.50
Ash content, %, max 0.20
  1. Antioxidant Properties: 6PPD serves as a potent antioxidant, effectively inhibiting the oxidation of rubber, which helps to extend the service life of rubber products.
  2. Compatibility with Rubbers: Exhibiting excellent compatibility with various types of rubbers, 6PPD can be easily incorporated into rubber formulations, providing broad applicability.
  3. Prevention of Blooming: 6PPD minimizes the risk of blooming, a phenomenon where a powdery residue forms on the surface of rubber, maintaining the aesthetic and functional quality of the rubber product.
  4. Low Volatility: The low volatility of 6PPD contributes to its stability during processing, preventing the loss of the antioxidant during high-temperature manufacturing processes.
  5. Low Toxicity: With low toxicity levels, 6PPD ensures the safety of the manufacturing process and the end-users of rubber products.
  6. Anti-Ozone Properties: 6PPD provides effective protection against ozone, a common environmental factor that can degrade the physical properties of rubber.
  7. Resistance to Flex Cracks: The antioxidant properties of 6PPD help to resist the formation of flex cracks, maintaining the structural integrity of rubber components under dynamic stress.
  8. Protection Against Insolation Cracks: 6PPD contributes to the prevention of insolation cracks, enhancing the durability of rubber products exposed to sunlight.

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