Uncompounded Diallyl Isophthalate Allyl Resin from Japan
Diallyl isophthalate (DAIP) resin, an uncompounded allyl polyester in primary granular form, used in high-performance composites for aerospace. HTS 3907.91.2000 applies as the allyl monomer units exceed 95% by weight, fitting the 'allyl resins, uncompounded' specification exactly. Ideal for prepreg manufacturing.
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%
Import Tips
• Submit technical data sheets verifying uncompounded status and precise allyl monomer percentage to CBP
• Use ISF filings early for bulk resin shipments
• Common error: misdeclaring low-molecular-weight versions as monomers (Chapter 29)