Copolyester Elastomer (COPE) Pellets from Japan
COPE pellets like Hytrel are thermoplastic elastomers combining polyester hard segments with polyether soft segments for hoses and belts. Classified 3907.99.50 as other polyesters where polyester units predominate over polyether per subheading note (a)(4).
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
• Prove polyester monomer >50% by weight via GPC analysis; specify Shore hardness for end-use verification; ensure no plasticizer content exceeding note definitions