# 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:

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Source: [2026 HTS Revision 21 (October 9, 2026)](https://hts.usitc.gov/search?query=3911). Additional duties by country of origin may apply; estimate a shipment's full duty with the tariff calculator: https://geopax.app/tariffs/calculator

## 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 | General | Special | Column 2 | Units |
| --- | --- | --- | --- | --- | --- |
| 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: |  |  |  |  |
| 3911.10.00.00 |   Petroleum resins, coumarone, indene or coumarone-indene resins; polyterpenes | 6.1% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 49% | kg |
| 3911.20.00.00 |   Poly(1,3-phenylene methylphosphonate) | 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% | kg |
| 3911.90 |   Other: |  |  |  |  |
| 3911.90.10.00 |     Elastomeric | Free |  | 20% | kg |
|  |     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 | Free |  | 15.4¢/kg + 49% | kg |
| 3911.90.25.00 |           Other | 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% | kg |
|  |         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 | Free |  | 15.4¢/kg + 45% | kg |
| 3911.90.45.00 |           Other | 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% | kg |
|  |       Other: |  |  |  |  |
| 3911.90.70.00 |         Chlorinated synthetic rubber | Free |  | 2.2¢/kg + 33.5% | kg |
| 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% |  |
| 3911.90.91.10 |           Thermoplastic | 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% | kg |
| 3911.90.91.50 |           Thermosetting | 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% | kg |