Isocyanate Replacing Hydrogenated MDI（CHDI,CAS:2556-36-7 ）

1. Automotive & Lightweight Vehicle Wrap Coatings (Superior Substitute for Hydrogenated MDI)

​​Technological Breakthroughs​​:

· Non-Yellowing Isocyanate Performance: Maintains clarity under UV exposure with ΔYI <1.5 after 2,000 hrs QUV testing, ideal for automotive clearcoat curing agents.

· 30% higher dynamic modulus enables 20% thinner films while maintaining tear strength ≥50 MPa.

· Extreme temperature resilience (-80°C to 180°C), validated by 1,000-hour salt spray corrosion resistance and non-cracking performance.

· CHDI-driven UV-curing efficiency: Full cure in 3 minutes with ≥92% light transmittance, reducing energy costs by 25%.

​​Typical Products​​:

· Automotive clearcoats with gloss retention ≥95% (5-year outdoor durability).

· PPF (Paint Protection Film) base layers (50–80 μm thickness) for new energy vehicle battery packs.

· Aircraft UV-resistant skins with CHDI-enhanced weatherability.

​​2. High-Precision Optical Lenses (Non-Yellowing Stability)

​​Key Features​​:

· CHDI optical purity: NCO group residue <0.1%, yellowness index ΔYI <1.0 (CIE Lab), ensuring crystal-clear optics.

· Low-stress birefringence: Refractive index 1.56±0.02, optimized for AR/VR lens modules.

· trans-CHDI process compatibility: Dual curing (injection molding at 160–180°C + UV) with ≥98% transmittance.