Description
1. Product Overview
Polyisocyanate Prepolymer (HDI Trimer) is a high-performance aliphatic polyisocyanate derived from hexamethylene diisocyanate (HDI), engineered for advanced coating and crosslinking systems. It is widely used as a curing agent in premium polyurethane coatings where superior weatherability, chemical resistance, and mechanical durability are required. The product delivers exceptional performance stability, making it a strategic input in high-value industrial and protective coating formulations. Its low-yellowing behavior and long-term UV resistance position it as a preferred solution in demanding exterior applications.
2. Key Specifications & Technical Characteristics
- Chemical Composition: Aliphatic polyisocyanate based on HDI trimer
- NCO Content: Typically 21.5% – 23.5%
- Physical Form: Clear to slightly yellow liquid
- Viscosity: Medium viscosity (application-grade, coating compatible)
- Color (Gardner): ≤ 1–2
- Density: ~1.05 g/cm³ (20°C)
- Solubility: Soluble in esters, ketones, and aromatic solvents
- Packaging Options: 200 kg steel drums / 20 MT ISO tank containers
- Shelf Life: 6–12 months under sealed, moisture-free storage conditions
3. Core Industrial Applications
- Industrial coatings: Automotive refinishing, OEM coatings, and high-performance clear coats
- Protective coatings: Anti-corrosion systems for steel structures, pipelines, and marine environments
- Wood coatings: High-gloss, durable finishes for furniture and flooring applications
- Adhesives & sealants: Structural bonding systems requiring high chemical resistance
- Use case advantage: Outperforms aromatic isocyanates with superior UV stability, non-yellowing performance, and enhanced outdoor durability, making it essential for premium-grade exterior applications.
4. Competitive Advantages
- Consistent high purity production ensuring batch-to-batch reliability
- Superior UV and weather resistance compared to conventional isocyanates
- Strong global supply chain reliability with scalable bulk availability
- Optimized cost-performance ratio for industrial-scale coating systems
- Low VOC formulation compatibility supporting environmental compliance
- Comprehensive technical documentation and formulation support available
- Excellent storage stability under controlled conditions, reducing waste risk
5. Commercial & Supply Information
- Minimum Order Quantity (MOQ): BULK 20 MT
- Packaging Format: ISO tank or 200 kg drums (as per buyer requirement)
- Loading Capacity: 20–22 MT per 20’ ISO tank container
- Supply Capability: Continuous bulk supply for long-term industrial contracts
- Incoterms: FOB / CIF / CFR available upon request
Reviews
There are no reviews yet.