Chapter 3902 — Customs Tariff Headings

3902.20.00Polyisobutylene

3902.30.00Propylene copolymers

3902.90.00Other

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Products classified under Tariff item 39.02

Biaxially Oriented Polypropylene (BOPP) Feedstock

Biaxially Oriented Polypropylene (BOPP) feedstock in pellet form, a specialty homopolymer with over 95% propylene content, designed for extrusion into BOPP film. It is in primary form (pellets) and meets the classification criteria for polypropylene under tariff item 3902.10.00.

Clarified Polypropylene Homopolymer

Clarified polypropylene homopolymer in pellet form, nucleated for clarity, with propylene content exceeding 95% by weight. It is a primary form polymer, not chemically modified beyond minor additives, and falls under polypropylene classification.

Flame-Retardant Polypropylene Resin

Flame-retardant polypropylene resin in granular form, a homopolymer with over 95% propylene content and less than 5% halogen-free flame retardants. The additives do not alter the primary polymer classification, and it remains in primary form.

High-Density Polypropylene Resin Pellets

High-density polypropylene resin pellets, a transparent homopolymer with propylene content over 95% by weight, intended for extrusion into pipes and profiles. The pellets are in primary form, meeting the tariff item's scope.

Isotactic Polypropylene Homopolymer

Isotactic polypropylene homopolymer, a high-molecular-weight resin with propylene monomer units exceeding 95% by weight, produced via Ziegler-Natta catalysis. It is in primary form (pellets or granules) and classified under polypropylene.

Metallocene Polypropylene Homopolymer

Metallocene polypropylene homopolymer with a narrow molecular weight distribution and over 95% propylene units, produced using metallocene catalysts. It is in primary form for films and fibers, qualifying under polypropylene.

Polypropylene Impact Copolymer (ICP)

Polypropylene impact copolymer (ICP) where propylene units exceed 95% by weight, with minor ethylene content for enhanced toughness. It is in primary form (pellets) and falls under polypropylene due to propylene predominance.

Random Copolymer Polypropylene (RCP)

Random copolymer polypropylene (RCP) with minimal ethylene content (less than 5%) for improved clarity and impact, used in medical syringes. It is in primary form (pellets) and classified under polypropylene as propylene units exceed 95%.

Butyl Rubber Vistanex L-100

Vistanex L-100 is a high molecular weight elastomeric polyisobutylene containing over 95% isobutylene monomer units, imported in primary pellet form. It falls under tariff item 3902.20.00 as polyisobutylene in primary forms, meeting the subheading note requirement of 95% or more monomer content.

Chewing Gum Base Polyisobutylene

Food-grade polyisobutylene specifically formulated for synthetic chewing gum base, with high monomer purity and classified under tariff item 3902.20.00 as polyisobutylene in primary forms. This elastomer provides the chewable texture required in gum.

Effage B100 Polyisobutylene

Effage B100 is a medium-high molecular weight polyisobutylene used for pharmaceutical sealants and transdermal patches, meeting monomer purity requirements. It is supplied as pharmaceutical-grade material in primary forms, qualifying under tariff item 3902.20.00.

Elastomeric Polyisobutylene Pellets for Tire Inner Liner

These elastomeric polyisobutylene pellets contain 97% isobutylene monomer content and are designed for compounding into tire inner liners. They are imported in primary pellet form and meet the 95% monomer threshold for classification under tariff item 3902.20.00.

Elastomeric Polyisobutylene Rubber

Elastomeric polyisobutylene rubber is a synthetic polymer where isobutylene monomer units constitute 95% or more by weight, imported in primary form. It is used in various applications requiring elasticity and gas impermeability, qualifying under tariff item 3902.20.00.

High Cis Elastomeric Polyisobutylene HMW

High molecular weight elastomeric polyisobutylene with high cis content and over 95% isobutylene by weight, imported as primary polymer. It is used in sealants, roofing membranes, and vibration dampers, and is classified under tariff item 3902.20.00.

Hycar Polyisobutylene Adhesive Polymer

Hycar polyisobutylene is a specialty grade for hot-melt adhesives and sealants, meeting the 95% monomer purity criteria in primary pellet form. It is used in construction and automotive applications, classified under tariff item 3902.20.00.

Indopol L-100 Polyisobutylene

Indopol L-100 is a low molecular weight liquid polyisobutylene used as a plasticizer and lubricant additive in industrial oils and greases. It is classified under tariff item 3902.20.00 as polyisobutylene in primary liquid form, with isobutylene as the predominant monomer.

Liquid Polyisobutylene Napvis 10

Napvis 10 is a low-viscosity liquid polyisobutylene used in cable filling compounds and corrosion inhibitors, classified under tariff item 3902.20.00 as polyisobutylene in primary liquid form. The isobutylene monomer units predominate, meeting the classification criteria.

Opanols Elastomeric Polyisobutylene Resin

Opanols are medium molecular weight elastomeric polyisobutylene resins meeting the 95% isobutylene criterion, imported in primary forms like granules. They are used in chewing gum bases and cable insulation, qualifying under tariff item 3902.20.00.

Oppanol B15 Polyisobutylene Resin

Oppanol B15 is a high molecular weight polyisobutylene resin serving as an adhesive tackifier and chewing gum base component. It qualifies for tariff item 3902.20.00 with 95% or more isobutylene monomer content, imported in primary forms.

Pebax Polyisobutylene Elastomer Pellets

Pebax polyisobutylene elastomer pellets are specialty pellets used in medical tubing and seals, meeting 95%+ isobutylene content for classification under tariff item 3902.20.00. These non-crosslinked pellets are in primary form.

Polyisobutylene Rubber Vistanex LM-MS

Vistanex LM-MS is a medium molecular weight polyisobutylene polymer used as a tackifier and viscosity modifier in adhesives, sealants, and rubber compounding. It falls under tariff item 3902.20.00 as polyisobutylene in primary forms, with isobutylene as the predominant monomer.

Polyisobutylene Tire Inner Liner Resin

High molecular weight polyisobutylene resin used in butyl rubber compounding for tire inner liners, qualifying for tariff item 3902.20.00 as polyisobutylene in primary pellet form. It provides air retention properties when compounded.

Vistanex Polyisobutylene HMW

Vistanex HMW (high molecular weight) polyisobutylene is used in asphalt modification and roofing sealants, classified under tariff item 3902.20.00 with over 95% isobutylene content in slab form. It enhances elasticity and weather resistance.

Automotive-Grade Propylene-Butene Copolymer

Automotive-grade propylene-butene copolymer pellets, where propylene exceeds 95% by weight, are used to produce thermoplastic polyolefin (TPO) compounds for automotive exterior parts. The butene comonomer enhances weather resistance and impact performance. As primary forms of a propylene copolymer, they fall under tariff item 3902.30.00.

Blow Molding Propylene Copolymer Pellets

Blow molding propylene-ethylene copolymer pellets, with 96% propylene by weight, are designed for producing bottles with balanced stiffness and impact resistance. The ethylene comonomer improves processability and durability. These primary-form pellets are classified as propylene copolymers under tariff item 3902.30.00.

Film-Grade Propylene Random Copolymer

Film-grade propylene random copolymer, with 95.5% propylene by weight, is used for cast films in food packaging due to its low seal initiation temperature. The random distribution of ethylene comonomer provides clarity and flexibility. As a primary-form resin, it falls under tariff item 3902.30.00 for propylene copolymers.

High-Clarity Propylene Copolymer Resin

High-clarity propylene copolymer resin pellets, with 97% propylene by weight, are engineered for optical clarity in medical packaging. The ethylene comonomer enhances transparency and impact resistance. These primary-form pellets are classified as propylene copolymers under tariff item 3902.30.00.

Impact-Resistant Propylene Copolymer Pellets

Impact-resistant propylene copolymer pellets, with propylene units exceeding 95% by weight and butene as comonomer, are designed for high-impact applications such as automotive bumpers. The butene comonomer improves toughness and low-temperature performance. These primary-form pellets fall under tariff item 3902.30.00.

Injection Molded Propylene Copolymer Pellets

Injection molded propylene copolymer pellets, with 97% propylene-hexene composition, are optimized for precision injection molding of housings. The hexene comonomer provides dimensional stability and improved mechanical properties. These primary-form pellets are classified as propylene copolymers under tariff item 3902.30.00.

Medical-Grade Propylene Copolymer Resin

Medical-grade propylene copolymer resin, with 98% propylene and minimal ethylene, is sterilizable and gamma-stable, making it suitable for syringes and IV bags. The ethylene comonomer enhances flexibility and clarity. As primary-form granules, it falls under tariff item 3902.30.00.

Pipe-Grade Propylene Copolymer Resin

Pipe-grade propylene copolymer resin, with 96% propylene and ethylene for bimodal distribution, is designed for pressure pipes with enhanced creep resistance. The ethylene comonomer improves long-term durability. As primary powder form, it falls under tariff item 3902.30.00.

Polypropylene-Ethylene Copolymer Resin

Polypropylene-ethylene copolymer resin, where propylene monomer units contribute over 95% by weight, is used primarily in injection molding applications. The ethylene comonomer provides improved impact resistance and processability. As primary-form resin, it falls under tariff item 3902.30.00.