U.S. imports of Petroleum Resins, Coumarone-Indene Resins & Polyterpenes in Primary Forms (HS 391110) totaled $17.1M in August 2026, imported from 24 countries.
Importers of Petroleum Resins, Coumarone-Indene Resins & Polyterpenes in Primary Forms paid $3.1M in duties in August 2026, an average duty rate of 18.23% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Petroleum Resins, Coumarone-Indene Resins & Polyterpenes in Primary Forms imports of $17.1M in August 2026 ran 17% above the year-to-date monthly average of $14.7M.
Last updated: August 2026 dataPetroleum resins, coumarone-indene resins, and polyterpenes are widely used tackifiers in hot-melt adhesives, rubber compounding, and road-marking paints, making them critical inputs for packaging and construction supply chains. South Korea is the dominant US supplier under this heading, followed by China and France; South Korean producers have built large-scale C5 and C9 hydrocarbon resin capacity that underpins their export position. Imports from China carry Section 301 tariff exposure, a factor that has reinforced South Korea's competitive advantage in the US market.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
410 import shipments a month
Petroleum resins are derived from cracked petroleum fractions (C5 or C9 streams), while coumarone-indene resins originate from coal-tar distillates. Both are classified under the same 10-digit line (3911100000) in the US schedule, so the distinction matters primarily for technical specifications and end-use qualification rather than for duty purposes.
Hot-melt and pressure-sensitive adhesive manufacturers are the largest consumers, followed by rubber compounders (for tire and footwear applications) and road-marking paint producers. Demand tends to track construction activity and packaging output, giving imports a degree of cyclicality tied to those sectors.
Subheading 2 of 3 in heading 3911
Subheading 391110 · $17.1M of $66.5M
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ImportsExports
Imports
$17.1MYoY · free account
Exports
$9.9MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $171.3M of Petroleum Resins, Coumarone-Indene Resins & Polyterpenes in Primary Forms and exported $126.4M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3911100000 | Petroleum Resins, Coumarone Resins, Etc, Polyterpenes | $17.1M | 18.23% | 97.92% | $3.1M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3911100000 | Petroleum Resins, Coumarone Resins, Etc, Polyterpenes | $9.9M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
South Korea and China together supply 66% of it. China pays 43.5% duty; Germany 10.0%.
customs district
destination
entry
rate provision · imports
2.1% enters free of duty; duty collected equals 18.23% of imports for consumption.