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SITCSection 5
U.S. exports of polyether resins (other than polyacetals), primary forms (SITC 57419) totaled $134.9M in July 2026.
Importers of Polyether Resins (Other Than Polyacetals), Primary Forms paid $9.9M in duties in July 2026 — an effective duty rate of 18% on $56.1M in dutiable value, based on actual customs collections rather than the published tariff schedule. Polyether Resins (Other Than Polyacetals), Primary Forms imports of $61.3M in July 2026 ran 20% above the year-to-date monthly average of $51.1M.
Last updated: July 2026 dataPolyether resins excluding polyacetals encompass a commercially diverse group — polyphenylene oxide (PPO), polyethylene glycol (PEG), polypropylene glycol (PPG), and polytetramethylene ether glycol (PTMEG) — each serving distinct end markets from engineering plastics blending to polyurethane prepolymer synthesis. The specific polyether type and molecular weight are the defining specifications for both end-use suitability and tariff classification. PTMEG, a key input for spandex fiber and thermoplastic polyurethane, is among the most actively traded grades in this heading.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.4K shipments/mo
Basic heading 56 of 465 in section 5
Basic heading 57419 · $61.3M of $28.9B
Molecular weight determines whether a polyether polyol is classified as a primary-form polymer or as a chemical intermediate. High-molecular-weight polyether polyols used as polymer building blocks typically fall under polymer headings, while low-molecular-weight grades may be classified as chemical compounds. Importers should provide the number-average molecular weight and intended end-use to support classification.
Polytetramethylene ether glycol (PTMEG) is the primary raw material for spandex (elastane) fiber and thermoplastic polyurethane (TPU) elastomers. US demand is closely tied to apparel, athletic wear, and automotive interior production cycles, making PTMEG import volumes a useful leading indicator for those downstream sectors.
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Exports · July 2026
destination
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$61.3MYoY · Pro
Exports
$134.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.