Heavy Cardanol

• High crosslinking activity:
  Heavy cardanol contains massive phenolic hydroxyl groups and oligomeric active structures, far exceeding regular distilled cardanol in reactive sites. When cured, it delivers fast crosslink speed and high crosslink density, greatly boosting finished products' hardness, water resistance and abrasion resistance.
• Superior thermal stability:
  As macromolecular heavy phenolic mixture, heavy cardanol holds ultra-low volatile content. It rarely decomposes or loses mass under high-temperature working conditions, effectively resisting thermal fading and matching high-heat industrial processing requirements.
• Wide material compatibility:
  Owing to its long alkyl side chains, heavy cardanol shows excellent miscibility with asphalt, rubber, petroleum resin, phenolic resin and most organic solvents. Its compatibility outperforms standard light cardanol significantly.
• Low cost & eco-friendly bio-based material:
  Derived from agricultural waste cashew shells, heavy cardanol is 100% renewable bio-based feedstock with a small carbon footprint. Its price is much lower than refined cardanol and petrochemical phenol, helping manufacturers cut raw material costs remarkably..
• Integrated multi-functional performance:
  Natural heavy cardanol comes with inherent anti-rust, anti-oxidation, wear-resistant and insulating properties. Formulators can reduce extra auxiliary additives and simplify production formulas.

Friction Materials (Largest Consumption Field)​

Heavy cardanol is a key raw material for modified phenolic resin used in automotive brake pads, clutch facings, industrial grinding wheels and railway brake shoes. Adding heavy cardanol improves thermal resistance and friction stability of resin matrix, lowers brake noise and wear rate, and solves thermal fading failure during high-temperature braking. Meanwhile, it partially replaces high-purity phenolic resin to control production cost.

Bioasphalt Modifier for Road & Waterproofing​

As a dedicated bio-based modifier for pavement asphalt and waterproof coil asphalt, heavy cardanol fixes two typical asphalt defects: softening and flowing under high temperature, cracking under low temperature. It strengthens adhesion between asphalt and aggregate sand, as well as water and weather resistance. Heavy cardanol has become a core eco-friendly additive for green municipal and highway bioasphalt projects.

Industrial Adhesives & Modified Phenolic Resin

Heavy cardanol is widely applied in foundry sand core binders, refractory adhesives and wood panel glues. Condensed with formaldehyde, heavy cardanol produces modified phenolic resin with high bonding strength, good toughness and superior water resistance. It can substitute large portions of petroleum phenol with prominent cost-performance advantages.

Heavy-Duty Anti-Corrosion Coatings

Heavy cardanol works well for thick anti-rust primer applied on steel structures, underground pipelines, containers and ship hulls. Its phenolic hydroxyl groups provide passivation anti-corrosion capacity, while long alkyl chains form hydrophobic barriers to block water vapor penetration. With high solid content and low volatility, heavy cardanol fits high-temperature baking anti-corrosion coating systems for long-lasting rust protection.

Rubber & Plastic Auxiliary Agents

Manufacturers adopt heavy cardanol as anti-aging plasticizer for rubber, antioxidant stabilizer for PVC, and dispersing carrier for color masterbatch. It optimizes filler dispersion and enhances oil resistance, weather resistance and anti-aging performance of rubber and plastic finished goods.