Cyanate Ester Resin Flakes from Canada
Thermosetting cyanate ester resin flakes for radar-transparent composites. HTS 3911.90.91.50 covers this primary form thermoset NES in Chapter 39.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• DSC analysis mandatory to demonstrate >200°C curing without melting
• Avoid 'adhesive' labeling; shifts to 3506 if prepared for bonding applications
• Declare low moisture content (<0.1%) to preserve thermoset reactivity