Polymethylpentene PMP Resin from Japan
Polymethylpentene (PMP), or poly(4-methyl-1-pentene), is a high-clarity olefin polymer imported as granules under HTS 3902.90.0050, classified as 'other' due to its specific 4-methyl-1-pentene monomer (>95% by weight). Known for heat resistance and transparency, it's used in labware, medical devices, and food packaging. Fits Chapter 39 subheading notes for non-polypropylene/non-ethylene olefins.
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 monomer analysis certificates confirming 4-methyl-1-pentene predominance
• Ensure packaging specifies 'primary forms' to avoid confusion with finished articles
• Document end-use if questioned, as PMP borders lab plastics in 3926