Polyether Block Amide Pellets
Polyether block amide (PEBA) is a thermoplastic elastomer in primary granular form, falling under HTS 3907.29.00.00 as other polyethers where the polyether segments contribute over 95% by weight to the polymer chain. Commonly used in sports shoe midsoles and medical tubing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If polyamide blocks predominate by weight
Subheading note (a)(4) directs to predominant monomer; polyamide exceeds polyether units.
If for epoxide resin-modified PEBA
Epoxide resins have specific subheading; blends meeting criteria shift from 'Other' polyethers.
If sold as polymer blend with polyurethane
Blends classified by predominant comonomer under notes; polyurethane may dominate.
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Import Tips & Compliance
• Provide FTIR or NMR analysis proving polyether block >95% to avoid reclassification as polyamide (3908)
• Label as 'primary form - not for retail sale' to distinguish from finished products in 3926
• Check for plasticizer content; if secondary plasticizers present, confirm no impact on 3920.43 exclusion
Related Products under HTS 3907.29.00.00
Polyphenylene Ether Resin
Polyphenylene ether (PPE) resin is a high-performance engineering thermoplastic in primary pellet form, classified under HTS 3907.29.00.00 as 'other polyethers' because it consists of repeating ether linkages from its monomer units exceeding 95% by weight. It is used in automotive parts and electronics for its heat resistance.
Polytetramethylene Ether Glycol (PTMEG)
PTMEG is a liquid polyether polyol in primary form, classified in HTS 3907.29.00.00 as other polyethers with tetrahydrofuran-derived ether units comprising over 95% by weight. It serves as a key intermediate for spandex fibers and polyurethane elastomers.
Polyoxypropylene Glycol Industrial Grade
Industrial-grade polyoxypropylene glycol (PPG) in primary liquid form is an other polyether under HTS 3907.29.00.00, featuring propylene oxide-derived ether linkages over 95% by weight. Used in polyurethane foams, coatings, and brake fluids.
Polysulfone Pellets USP Grade
USP-grade polysulfone pellets are high-purity polyethers in primary form, classified under HTS 3907.29.00.00 due to diphenyl sulfone ether linkages exceeding 95% polymer content. Applied in medical devices and food contact membranes.
Polyetherimide Resin Granules
Polyetherimide (PEI) granules like Ultem are aromatic polyethers in primary form under HTS 3907.29.00.00, with imide-ether structures meeting the 95% polyether monomer requirement. Ideal for aerospace and high-temp electronics.
Polybutylene Ether Pellets
Polybutylene ether pellets are aliphatic polyethers derived from 1,4-butanediol, classified in HTS 3907.29.00.00 as other polyethers with >95% ether content by weight in primary form. Used in hot-melt adhesives and flexible tubing.