Antioxidant IPPD (N-Isopropyl-N'-phenyl-p-phenylenediamine)
CAS Number: 101-72-4
N-Isopropyl-N'-phenyl-p-phenylenediamine (IPPD) is a p-phenylenediamine antidegradant that offers excellent protection against ozone, oxygen, flex cracking, and heat aging in natural and synthetic diene rubber compounds. IPPD provides slightly more volatile protection than 6PPD but delivers superior antifatigue properties and is often used as a complement or alternative to 6PPD in tire and industrial rubber formulations.
Technical Specifications
| ash (%) | ≤0.20 |
| appearance | Dark violet to dark brown granules |
| purity (%) | ≥96.0 |
| moisture (%) | ≤0.50 |
| melting point (°C) | 72–76 |
Applications
- Tire tread, sidewall, and inner liner compounds
- NR and SBR vibration damping mounts
- Automotive rubber boots and CV joint covers
- Industrial rubber belts and hoses
- Rubber flooring under UV exposure
Key Features
- Superior antifatigue and anti-flex-cracking performance
- Effective ozone and oxygen protection for diene rubbers
- Good compatibility with 6PPD for blended antidegradant systems
- Protects both natural and synthetic rubber compounds
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