Uncompounded Diallyl Isophthalate Allyl Resin from China
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 — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0225%Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
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)