⭐ What Is IPDI (Isophorone Diisocyanate)?
Isophorone Diisocyanate (IPDI) is an aliphatic (non-aromatic) diisocyanate.
Because of its aliphatic structure, it provides:
- High UV resistance
- Non-yellowing performance
- Excellent flexibility
- Long-term durability
For these reasons, IPDI is widely used in high-performance polyurethane coatings, elastomers, and adhesive formulations.
🔧 What Is IPDI Used For?
IPDI reacts with polyols to form aliphatic polyurethane polymers.
These polymers are known for being:
- UV-resistant
- Non-yellowing
- Chemically stable
- Mechanically durable
Key benefits of IPDI:
- Produces non-yellowing polyurethanes
- Excellent UV resistance
- High chemical resistance
- High hardness or flexibility (depending on formulation)
- Superior scratch and abrasion resistance
- Slow and controlled reactivity → smoother film formation
🎯 Purposes of IPDI
✔ 1. UV-Resistant Polyurethane Coatings
IPDI is preferred especially in applications exposed to sunlight:
- Wood coatings
- Protective metal coatings
- Automotive refinishing paints
- Industrial floor coatings
- Exterior façade coatings
✔ 2. Flexible & Durable Polyurethane Elastomers
Elastomers made with IPDI have:
- High abrasion resistance
- Excellent elasticity
- Strong chemical resistance
✔ 3. Adhesive (PU Glue) Manufacturing
Used in high-strength polyurethane adhesive formulations:
- Wood & furniture adhesives
- Flexible adhesives
- Industrial lamination adhesives
✔ 4. Reactive Sealers & Varnishes
IPDI is used to produce topcoats and sealers with high UV stability.
✔ 5. Water-Based Polyurethane Systems
Due to its minimal yellowing tendency, IPDI is preferred in premium water-based PU coatings.
🏭 Industries That Use IPDI
- Automotive coatings & refinishing
- Wood furniture & parquet varnishes
- Industrial metal coatings
- Floor coating systems
- Polyurethane elastomer manufacturing
- Adhesive & sealant producers
- Water-based and solvent-based PU resin manufacturers
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