Urea-Formaldehyde Resin Powder
Thermosetting urea-formaldehyde resin powder in primary form for particleboard adhesives and molded products. Falls under 3911.90.91.50 as a thermosetting product NES, compliant with polymer classification rules based on predominant monomer weight.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-mixed as glue for retail sale
Adhesives prepared for immediate use, even if polymer-based, are classified in 3504, not primary polymers.
If pure urea-formaldehyde polymers meeting 3909 criteria
If specifically provided for in 3909 series with 95% monomer content, takes precedence over 3911 NES.
If imported as molded plates or sheets
End-use finished articles from thermosets classified by shape/function in 3920, not primary form.
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Import Tips & Compliance
• Include formaldehyde emission test reports to meet EPA TSCA compliance for wood product resins
• Label clearly as 'primary form' to prevent confusion with compounded ready-to-use adhesives under 3504
• Check for chemical modification; if significantly modified, may shift to 'Other' per subheading note (a)(3)
Related Products under HTS 3911.90.91.50
Melamine-Formaldehyde Resin Granules
Thermosetting melamine-formaldehyde resin in granular primary form, used for molding durable laminates and coatings. Classified under HTS 3911.90.91.50 as a thermosetting polymer not elsewhere specified, meeting the criteria where the monomer units contribute over 95% by weight per subheading note (a)(1).
Epoxy Novolac Resin Pellets
High-performance thermosetting epoxy novolac resin in pellet form for electronics encapsulation. HTS 3911.90.91.50 applies to this NES thermosetting polymer in primary form, where epoxy and novolac units predominate per note (a)(4).
Diallyl Phthalate Resin Granules
Thermosetting diallyl phthalate (DAP) resin granules for high-temperature electrical components. Classified in 3911.90.91.50 as other thermosetting polymers in primary forms not specified elsewhere.
Polyimide Prepolymer Powder
Thermosetting polyimide prepolymer powder in primary form for aerospace composites. Under 3911.90.91.50 as NES thermosetting product, classified by predominant imide monomer units.
Cyanate Ester Resin Flakes
Thermosetting cyanate ester resin flakes for radar-transparent composites. HTS 3911.90.91.50 covers this primary form thermoset NES in Chapter 39.
Bismaleimide Resin Pellets
High-temp bismaleimide (BMI) thermosetting resin pellets for aircraft structures. Primary form classification under 3911.90.91.50 as other thermosets.