C5 Aliphatic Petroleum Resin
C5 aliphatic petroleum resin is a thermoplastic resin derived from the C5 fraction of petroleum cracking, used primarily as a tackifier in adhesives and hot-melt coatings. It falls under HTS 3911.90.91 as a petroleum resin in primary forms (pellets or granules), not elsewhere specified, meeting the chapter note criteria for polymers specified in note 3. This classification applies because it is a hydrocarbon resin with predominant C5 monomer units exceeding 95% by weight.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If derived from C9 aromatic fraction
Aromatic petroleum resins with predominant styrene or indene units (>95% by weight) classify under specific C9 subheading per note (a)(1).
If chemically modified as copolymer
Ethylene-vinyl acetate copolymers (>95% named comonomers) fall under 3901.30, not generic petroleum resins.
If undistilled bitumen residue
Unprocessed petroleum bitumen or asphaltic residues remain in Chapter 27 as mineral products, not polymers.
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Import Tips & Compliance
• Verify monomer composition via lab analysis to confirm >95% C5 content per subheading note (a)(1) to avoid reclassification
• Provide supplier certificates specifying primary form (e.g
• granules <5mm) and non-phenolic nature to support NES status
Related Products under HTS 3911.90.91
Hydrocarbon Resin G-90
G-90 hydrocarbon resin is a general-purpose petroleum resin (softening point 90°C) for rubber compounding. HTS 3911.90.91 as other petroleum resin, primary granules, mixed C5/C9 but C9 predominant without specific name.
Pentaerythritol Ester of Rosin
Pentaerythritol ester of rosin is a tall oil derivative used in inks, technically a polyterpene ester. 3911.90.91 as modified polyterpene, though borderline with 3806.
Liquid Polysulfide Polymer
Liquid polysulfide polymer (LP-3 type) for sealants, mercaptan-terminated. 3911.90.91 as polysulfides primary liquid form.
Hydrogenated C9 Petroleum Resin
Hydrogenated C9 petroleum resin is a stabilized, low-odor version of aromatic hydrocarbon resin used in hot-melt adhesives and sealants. Classified in 3911.90.91 as 'other' petroleum resins in primary forms, as hydrogenation is a chemical modification not covered by specific subheadings per note (a)(3). It consists primarily of hydrogenated alkyl-aromatic monomers.
Coumarone-Indene Resin
Coumarone-indene resin is a synthetic thermoplastic derived from coal tar fractions, used as a binder in rubber and adhesives. It qualifies for HTS 3911.90.91 as specified in note 3 to Chapter 39, in primary forms like pastilles, with coumarone/benzofuran and indene monomers predominant.
Polyterpene Resin from Pinene
Beta-pinene polyterpene resin is polymerized from turpentine-derived monomers, serving as a tackifier in pressure-sensitive adhesives. Falls under 3911.90.91 as polyterpenes in primary forms (granules), explicitly named in chapter note 3 with >95% terpene monomer content.