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SITCSection 5
U.S. imports of propylene copolymers, primary forms (SITC 57513) totaled $19.3M in April 2026, traded with 27 countries.
Importers of Propylene Copolymers, Primary Forms paid $2.2M in duties in April 2026 — an effective duty rate of 13% on $16.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 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.
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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.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $201K | $60.2M | +$60.0M |
| CANADA | $2.9M | $39.9M | +$37.0M |
| NETHERLANDS | $675K | $7.6M | +$6.9M |
| BELGIUM | $663K | $5.0M | +$4.3M |
| SINGAPORE | $5.1M | $199K | -$4.9M |