HTS 3911
Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms
| Code | Description | Unit | General | Special | Column 2 | Source |
|---|---|---|---|---|---|---|
| 3911.10.00.00 | Petroleum resins, coumarone, indene or coumarone-indene resins; polyterpenes | kg | 6.1% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 49% | USITC |
| 3911.20.00.00 | Poly(1,3-phenylene methylphosphonate) | kg | 6.5% | Free (A, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P,PA, PE, S, SG) | 2.2¢/kg + 33.5% | USITC |
| 3911.90 | Other | USITC | ||||
| 3911.90.10.00 | Elastomeric | kg | Free | 20% | USITC | |
| Other | ||||||
| Containing monomer units which are aromatic or modified aromatic, or which are obtained, derived or manufactured in whole or in part therefrom | ||||||
| Thermoplastic | ||||||
| 3911.90.15.00 | Poly(nitrilomethanetetraarylnitrilo- [2,4,6-tris-(1-methyethyl)-1,3- phenylene]]-2,6-bis(1-methylethyl)- phenyl]-ω-[[[2,6-bis(1-methylethyl)- phenyl]amino]methylene]amino carbodiimide or 2,4-diisocyanate-1,3,5-tris(1-methyl- ethyl) homopolymer with polyethylene | kg | Free | 15.4¢/kg + 49% | USITC | |
| 3911.90.25.00 | Other | kg | 6.1% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 49% | USITC |
| Thermosetting | ||||||
| 3911.90.35.00 | 1,1'-Bis(methylenedi-4,1-phenylene)- 1H-pyrrole-2,5-dione, copolymer with 4,4'-methylenebis(benzeneamine); and Hydrocarbon novolac cyanate ester | kg | Free | 15.4¢/kg + 45% | USITC | |
| 3911.90.45.00 | Other | kg | 5.8% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 45% | USITC |
| Other | ||||||
| 3911.90.70.00 | Chlorinated synthetic rubber | kg | Free | 2.2¢/kg + 33.5% | USITC | |
| 3911.90.91 | Other | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 2.2¢/kg + 33.5% | USITC | |
| 3911.90.91.10 | Thermoplastic | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 2.2¢/kg + 33.5% | USITC |
| 3911.90.91.50 | Thermosetting | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 2.2¢/kg + 33.5% | USITC |
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Source: USITC, Harmonized Tariff Schedule of the United States – 2026 HTS Revision 20, effective 28 September 2026. Heading 3911 at USITC
Not shown: the additional duties of Chapter 99 (such as Section 301 and Section 232), anti-dumping and countervailing duties, quotas and the legal notes.
This page is general information, not legal advice and not a classification decision. Tariff texts and rates change: check the publisher's current schedule, and ask the customs authority for a binding ruling where the answer matters.