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%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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)