3911.90.35.00/Aerospace-Grade Cyanate Ester Resin/Japan

Aerospace-Grade Cyanate Ester Resin from Japan

Hydrocarbon novolac cyanate ester resin meeting HTS 3911.90.35.00 specification for thermosetting aromatic polymers in primary forms. Critical for RTM processing in aircraft radomes. Low moisture absorption and high char yield characteristics.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Check ITAR/EAR export control status even for imports; may require additional licenses

• Confirm viscosity specs indicate primary liquid resin form

• Avoid 3909.50 classification for non-novolac cyanates