Liquid Polybutene L-14E
Liquid polybutene L-14E (viscosity 140 cSt) is a low molecular weight olefin polymer imported under HTS 3902.90.00 for use in lubricants and caulks. Isobutylene monomer >95% by weight in primary liquid form.
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 marketed as lubricant base oil
Petroleum-derived oils, even polymerized, may classify under Chapter 27 if function dominates.
If formulated into final lubricant with additives
Prepared lubricating preparations exceed primary polymer scope, moving to Chapter 34.
If higher alpha-olefin like hexene-based
Polymers of longer-chain olefins fall under specific 3903 subheadings.
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Import Tips & Compliance
• Classify as UN1268 liquid per DOT; provide flash point data (>200°C)
• Avoid drum linings reactive with olefins
• Temperature-control shipments above 15°C
Related Products under HTS 3902.90.00
Polybutene-1 Resin PB-1
Polybutene-1 (PB-1) is a polyolefin polymer derived from butene-1 monomer, classified under HTS 3902.90.00 as it falls within polymers of other olefins in primary forms (pellets or granules). It meets the subheading note requiring the monomer unit to contribute 95% or more by weight. Used in pipes, films, and sealants due to its flexibility and sealability.
Polyisobutylene (PIB) Gum
Polyisobutylene is a synthetic rubber-like polyolefin from isobutylene monomer, imported as viscous liquid or granules under HTS 3902.90.00 for other olefin polymers in primary forms. It qualifies as the isobutylene units exceed 95% by weight. Commonly used in chewing gum base, adhesives, and sealants.
Polymethylpentene (PMP) Pellets
Polymethylpentene, a high-clarity polyolefin from 4-methyl-1-pentene monomer, is imported in pellet form under HTS 3902.90.00 as other olefin polymers in primary forms. The monomer contributes over 95% by weight per chapter notes. Ideal for labware, medical devices, and microwave components due to heat resistance.
Poly-4-methyl-1-pentene Granules
Granular poly-4-methyl-1-pentene (TPX) is a semicrystalline olefin polymer used in optical and high-temp applications, classified in HTS 3902.90.00 for primary form olefin polymers beyond propylene. Meets 95% monomer threshold. Offers low density and high transparency.
High-Density Polybutene Pellets
High-density polybutene resin pellets for piping and hot-melt adhesives are olefin polymers under HTS 3902.90.00, as butene-derived in primary granular form with >95% monomer content. Provides superior creep resistance and flexibility.
Isotactic Polybutene Powder
Isotactic polybutene powder, a stereoregular olefin homopolymer, is classified under HTS 3902.90.00 for other olefins in primary powder form suitable for compounding. Monomer purity exceeds chapter note requirements. Applied in sealants and electrical insulation.