Standard International Trade Classification
U.S. exports of Propylene Copolymers, Primary Forms (SITC 57513) totaled $121.3M in August 2026.
Importers of Propylene Copolymers, Primary Forms paid $2.2M in duties in August 2026, an average duty rate of 9.37% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Propylene Copolymers, Primary Forms imports of $23.2M in August 2026 ran 16% above the year-to-date monthly average of $19.9M.
Last updated: August 2026 dataPropylene copolymers in primary forms — including random and impact copolymers produced by incorporating ethylene or other alpha-olefins into the polypropylene chain — offer enhanced clarity, flexibility, or impact resistance compared to homopolymer PP, broadening their use in food packaging films, automotive bumpers, and medical devices. The distinction between a propylene copolymer and a polypropylene homopolymer is commercially and sometimes legally significant: comonomer content and type determine whether a resin qualifies as a copolymer under trade remedy scope definitions. Importers sourcing from origins subject to Section 301 measures should verify the applicable tariff treatment for copolymer grades specifically, as scope language in trade remedy orders may treat homopolymers and copolymers differently.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
507 import shipments a month
There is no single universal threshold — the distinction is typically made on the basis of polymer chemistry (presence of a second monomer unit in the chain) rather than a fixed percentage. However, trade remedy scope rulings and HTS classification guidance may specify comonomer content ranges. Importers should obtain a certificate of analysis showing comonomer identity and content to support classification and any scope exclusion claims.
Not necessarily — the scope of antidumping and countervailing duty orders is defined in the order itself and may explicitly include or exclude copolymer grades. Importers should review the scope language of any active orders and, if uncertain, request a scope ruling from the Department of Commerce before the shipment arrives.
Basic heading 43 of 465 in section 5
Basic heading 57513 · $121.3M of $26.2B
Exports · August 2026
destination
Mexico and Canada together take 79% of it.
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.
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ImportsExports
Imports
$23.2MYoY · free account
Exports
$121.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $229.7M of Propylene Copolymers, Primary Forms and exported $1.5B.
Through August 2026. Source: U.S. Census Bureau.