Other
Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms. > Other polyethers: > Other > Other
Duty Rate (from China)
Subheadings
Products classified under Tariff item 3907.29
Polybutylene Ether Pellets
Polybutylene ether pellets are aliphatic polyethers derived from 1,4-butanediol, presented in primary form as pellets. They consist of repeating ether linkages with over 95% polyether content by weight, classifying them under tariff item 3907.29.00 as other polyethers. These pellets are commonly used as intermediates in hot-melt adhesives and flexible packaging applications.
3907.29.00Polyether Block Amide Pellets
Polyether block amide (PEBA) pellets are thermoplastic elastomers in primary granular form, composed of polyether and polyamide segments. The polyether segments contribute over 95% by weight to the polymer chain, satisfying the classification criteria for other polyethers under tariff item 3907.29.00. These pellets are used in applications requiring flexibility and impact resistance, such as sports footwear and medical tubing.
3907.29.00Polyetherimide Resin Granules
Polyetherimide (PEI) resin granules, such as Ultem, are high-performance aromatic polyethers in primary form. Their imide-ether structure qualifies them as 'other polyethers' under tariff item 3907.29.00, as the polyether monomer content meets the 95% threshold. These granules are used in aerospace, automotive, and high-temperature electrical applications.
3907.29.00Polyoxypropylene Glycol Industrial Grade
Polyoxypropylene glycol (PPG) is an industrial-grade liquid polyether in primary form, with propylene oxide-derived ether linkages comprising over 95% by weight. It is classified under tariff item 3907.29.00 as other polyethers, given its polyether structure and primary liquid state. PPG is widely used as an intermediate in polyurethane foams, coatings, and sealants.
3907.29.00Polyphenylene Ether Resin
Polyphenylene ether (PPE) resin is a high-performance engineering thermoplastic in primary pellet form, consisting of repeating ether linkages from its monomer units. With over 95% polyether content by weight, it falls under tariff item 3907.29.00 as other polyethers. PPE resin is used in automotive parts, electrical components, and appliances due to its heat resistance and dimensional stability.
3907.29.00Polysulfone Pellets USP Grade
USP-grade polysulfone pellets are high-purity polyethers in primary form, featuring diphenyl sulfone ether linkages that exceed 95% polymer content. They are classified under tariff item 3907.29.00 as other polyethers, given their polyether structure and primary pellet form. These pellets are used in medical devices, food contact materials, and water filtration components.
3907.29.00Polytetramethylene Ether Glycol (PTMEG)
Polytetramethylene ether glycol (PTMEG) is a liquid polyether polyol in primary form, with tetrahydrofuran-derived ether units comprising over 95% by weight. It is classified under tariff item 3907.29.00 as other polyethers, given its polyether structure and liquid state. PTMEG is a key intermediate in the production of spandex fibers, polyurethane elastomers, and copolyester ethers.