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HTS 3911Petroleum 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

Product or HTS code

Rate lines10

Code	Description	General	Special	Column 2	Units	Calculate
3911.10.00.00	3911.10.00.00Petroleum resins, coumarone, indene or coumarone-indene resins; polyterpenesGeneral 6.1% · Special Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 15.4¢/kg + 49% · 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%	kg
3911.20.00.00	3911.20.00.00Poly(1,3-phenylene methylphosphonate)General 6.5% · Special Free (A, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P,PA, PE, S, SG) · Column 2 2.2¢/kg + 33.5% · 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%	kg
3911.90	3911.90Other
3911.90.10.00	3911.90.10.00ElastomericGeneral Free · Column 2 20% · kg	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	3911.90.15.00Poly(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 polyethyleneGeneral Free · Column 2 15.4¢/kg + 49% · kg	Free		15.4¢/kg + 49%	kg
3911.90.25.00	3911.90.25.00OtherGeneral 6.1% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) · Column 2 15.4¢/kg + 49% · 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%	kg
	Thermosetting
3911.90.35.00	3911.90.35.001,1'-Bis(methylenedi-4,1-phenylene)- 1H-pyrrole-2,5-dione, copolymer with 4,4'-methylenebis(benzeneamine); and Hydrocarbon novolac cyanate esterGeneral Free · Column 2 15.4¢/kg + 45% · kg	Free		15.4¢/kg + 45%	kg
3911.90.45.00	3911.90.45.00OtherGeneral 5.8% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) · Column 2 15.4¢/kg + 45% · 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%	kg
	Other
3911.90.70.00	3911.90.70.00Chlorinated synthetic rubberGeneral Free · Column 2 2.2¢/kg + 33.5% · kg	Free		2.2¢/kg + 33.5%	kg
3911.90.91	3911.90.91OtherGeneral 6.5% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) · Column 2 2.2¢/kg + 33.5%	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	3911.90.91.10ThermoplasticGeneral 6.5% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) · Column 2 2.2¢/kg + 33.5% · 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%	kg
3911.90.91.50	3911.90.91.50ThermosettingGeneral 6.5% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) · Column 2 2.2¢/kg + 33.5% · 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%	kg

2026 HTS Revision 21 (October 9, 2026)

Duty by country of origin

Rate line	Germany23.43% of imports	Japan15.3% of imports	South Korea12.41% of imports	Canada11.33% of imports	United Kingdom10.77% of imports	China7.03% of imports	France6.43% of imports	Singapore2.39% of imports	Netherlands1.97% of imports	India1.34% of imports
3911.10.00.00Petroleum resins, coumarone, indene or coumarone-indene resins; polyterpenes	10%9903.05.39	12.5%9903.05.49	12.5%9903.05.71	16.1%9903.05.29	16.1%9903.05.81	43.6%9903.05.319903.88.02	10%9903.05.39	18.6%9903.05.68	10%9903.05.39	16.1%9903.05.44
3911.20.00.00Poly(1,3-phenylene methylphosphonate)	10%9903.05.39	12.5%9903.05.49	12.5%9903.05.71	16.5%9903.05.29	16.5%9903.05.81	44%9903.05.319903.88.02	10%9903.05.39	19%9903.05.68	10%9903.05.39	16.5%9903.05.44
3911.90.10.00Elastomeric	10%9903.05.39	12.5%9903.05.49	12.5%9903.05.71	10%9903.05.29	10%9903.05.81	37.5%9903.05.319903.88.02	10%9903.05.39	12.5%9903.05.68	10%9903.05.39	10%9903.05.44
3911.90.15.00Poly(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	10%9903.05.39	12.5%9903.05.49	12.5%9903.05.71	10%9903.05.29	10%9903.05.81	37.5%9903.05.319903.88.02	10%9903.05.39	12.5%9903.05.68	10%9903.05.39	10%9903.05.44
3911.90.25.00Other	10%9903.05.39	12.5%9903.05.49	12.5%9903.05.71	16.1%9903.05.29	16.1%9903.05.81	43.6%9903.05.319903.88.02	10%9903.05.39	18.6%9903.05.68	10%9903.05.39	16.1%9903.05.44
3911.90.35.001,1'-Bis(methylenedi-4,1-phenylene)- 1H-pyrrole-2,5-dione, copolymer with 4,4'-methylenebis(benzeneamine); and Hydrocarbon novolac cyanate ester	10%9903.05.39	12.5%9903.05.49	12.5%9903.05.71	10%9903.05.29	10%9903.05.81	37.5%9903.05.319903.88.02	10%9903.05.39	12.5%9903.05.68	10%9903.05.39	10%9903.05.44
3911.90.45.00Other	10%9903.05.39	12.5%9903.05.49	12.5%9903.05.71	15.8%9903.05.29	15.8%9903.05.81	From 43.3%9903.05.319903.88.02AD/CVD may apply	10%9903.05.39	18.3%9903.05.68	10%9903.05.39	15.8%9903.05.44
3911.90.70.00Chlorinated synthetic rubber	10%9903.05.39	12.5%9903.05.49	12.5%9903.05.71	10%9903.05.29	10%9903.05.81	37.5%9903.05.319903.88.02	10%9903.05.39	12.5%9903.05.68	10%9903.05.39	10%9903.05.44
3911.90.91.10Thermoplastic	10%9903.05.39	12.5%9903.05.49	12.5%9903.05.71	16.5%9903.05.29	16.5%9903.05.81	44%9903.05.319903.88.02	10%9903.05.39	19%9903.05.68	10%9903.05.39	16.5%9903.05.44
3911.90.91.50Thermosetting	10%9903.05.39	12.5%9903.05.49	12.5%9903.05.71	16.5%9903.05.29	16.5%9903.05.81	44%9903.05.319903.88.02	10%9903.05.39	19%9903.05.68	10%9903.05.39	16.5%9903.05.44

Total duty on a $10,000 ocean shipment entered 2026-10-13, before customs fees. Origins are the leading sources of US imports under this heading in 2025 (US Census Bureau).