U.S. exports of Copolymers of Vinyl Esters, in Primary Forms (HS 390591) totaled $29.3M in August 2026.
Importers of Copolymers of Vinyl Esters, in Primary Forms paid $603K in duties in August 2026, an average duty rate of 10.25% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Copolymers of Vinyl Esters, in Primary Forms imports of $6.5M in August 2026 ran 14% below the year-to-date monthly average of $7.5M.
Last updated: August 2026 dataCopolymers of vinyl esters other than vinyl acetate — or mixed vinyl ester copolymers — in primary forms are subdivided under US tariff lines 3905911000 (containing 50% or more by weight of derivatives of vinyl acetate) and 3905915000 (all others), a split that requires careful compositional analysis at entry. These specialty polymers serve as binders, film formers, and adhesion promoters in coatings, inks, and adhesive systems. Taiwan and Japan lead US import supply, with Germany and the Netherlands also significant sources, reflecting the specialty chemical manufacturing strengths of those markets.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
85 import shipments a month
Line 3905911000 applies when the copolymer contains 50% or more by weight of units derived from vinyl acetate. Line 3905915000 covers all other vinyl ester copolymers in primary forms not meeting that threshold. The manufacturer's certificate of analysis stating monomer composition by weight percentage is the essential supporting document.
Yes — copolymers based on vinyl esters other than vinyl acetate (such as vinyl versatate or vinyl propionate) that do not fit a more specific heading in Chapter 39 can classify under 390591. The key is confirming that the polymer is based on a vinyl ester monomer and is in primary form. Where the classification is uncertain, a CBP binding ruling provides the most reliable guidance.
Subheading 1 of 7 in heading 3905
Subheading 390591 · $29.3M of $75.1M
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 |
|---|---|---|---|---|---|
| 3905911000 | Vinyl Copolymrs: Cont by Wt 50%+ Deriv of Vnyl Ace | $5.2M | 10.24% | 99.93% | $535K |
| 3905915000 | Vinyl Copolymers in Primary Forms, NESOI | $659K | 10.32% | 92.78% | $68K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3905911000 | Vinyl Copolymrs: Cont by Wt 50%+ Deriv of Vnyl Ace | $22.3M |
| 3905915000 | Vinyl Copolymers in Primary Forms, NESOI | $7.0M |
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.
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ImportsExports
Imports
$6.5MYoY · free account
Exports
$29.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $84.6M of Copolymers of Vinyl Esters, in Primary Forms and exported $320.3M.
Through August 2026. Source: U.S. Census Bureau.
Exports · August 2026
destination
customs district
origin
entry
rate provision · imports
0.8% enters free of duty; duty collected equals 10.25% of imports for consumption.