Halogenated Butene Polymer
Halogenated butene polymer, specifically chlorinated polybutene, is used for sealants. It is classified under tariff item 3904.90.00 as 'Other' polymers of halogenated olefins. The product is in primary form and not specifically named elsewhere in Chapter 39.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the polymer is not sufficiently chlorinated and is essentially polybutene.
Unmodified polybutene falls under heading 3902.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify the polymer is based on butene and not another olefin
• Ensure it is in primary form
• Provide the chlorine content and polymer composition to support classification
Related Products under Tariff item 3904.90.00
Brominated Polyethylene Copolymer
Brominated polyethylene copolymer is a halogenated olefin polymer in primary pellets, used for flame-retardant compounds. It is classified under tariff item 3904.90.00 as an 'Other' polymer of halogenated olefins. The bromine addition modifies the polyethylene, making it a halogenated polymer.
Chlorinated Polyethylene Elastomer (CPE)
Chlorinated polyethylene elastomer (CPE) is a polymer of halogenated olefins produced by chlorinating polyethylene. It is supplied in primary forms such as powder or pellets and exhibits rubber-like properties due to the chlorine modification. This product falls under tariff item 3904.90.00 as an 'Other' polymer of halogenated olefins, not elsewhere specified.
Chlorinated Polyethylene Granules CPE
Chlorinated polyethylene granules (CPE) are produced by chlorinating polyethylene, resulting in a rubbery halogenated olefin polymer used in wire insulation and hoses. They are classified under tariff item 3904.90.00 as 'Other' polymers of halogenated olefins. The granules are a primary form.
Chloroprene Rubber (CR)
Chloroprene rubber (CR), also known as neoprene, is an elastomeric synthetic polymer derived from chloroprene monomer. It is imported in primary forms such as pellets or powder and is classified under tariff item 3904.90.00 as an 'Other' polymer of halogenated olefins. Its elastomeric properties and chemical composition distinguish it from other polymers.
Chlorotrifluoroethylene Copolymer Pellets
Chlorotrifluoroethylene copolymer pellets (ECTFE) are made from chlorotrifluoroethylene and ethylene, offering corrosion resistance for pipes. They are classified under tariff item 3904.90.00 as 'Other' primary polymers of halogenated olefins. The ethylene comonomer content is less than 95%, preventing classification under a more specific subheading.
Fluorochlorinated Polyolefin Pellets
Fluorochlorinated polyolefin pellets are a blend of fluoro and chloro olefins used for wire coatings. They are in primary form and classified under tariff item 3904.90.00 as 'Other' polymers of halogenated olefins. The mixed halogen content makes it a specialty polymer.