Isotactic Polypropylene Homopolymer from Japan
A high-molecular-weight isotactic polypropylene homopolymer where propylene monomer units constitute over 95% by weight, produced via Ziegler-Natta catalysis for superior crystallinity. Classified under HTS 3902.10.00.00 as it meets the subheading note (a)(1) for polymers prefixed 'poly' with predominant monomer content. Used in injection molding for rigid containers and automotive parts.
Duty Rate — Japan → United States
16.5%
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
Import Tips
• Verify monomer content via certificate of analysis to confirm 95%+ propylene for 3902.10 classification; provide detailed polymer specs in entry docs
• Watch for blends exceeding threshold, risking reclassification to 3902.90
• Common pitfall: mislabeling copolymers as homopolymers