High-Purity Urea Resin for Foundry Binders
Ultra-pure urea-formaldehyde resin powder for core binder systems in metal casting, with consistent polymerization properties. Classified HTS 3909.10.00.00 as primary form urea resin per 95% monomer rule. Rapid curing enables complex sand mold production.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-blended with silica for core oil systems
Foundry chemical preparations classify as mixtures under 3824.
If refractory cement mixtures
Binders integral to refractory compositions shift classification.
Not sure which classification is right?
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Import Tips & Compliance
• Specify gel time specs in documentation for foundry verification; moisture content <0.5% critical for shelf life; comply with OSHA formaldehyde exposure limits
Related Products under HTS 3909.10.00.00
Urea-Formaldehyde Resin Powder
Urea-formaldehyde resin in powdered primary form, produced by condensing urea and formaldehyde, used primarily in wood adhesives and particleboard production. It falls under HTS 3909.10.00.00 as a urea resin in primary form, meeting the 95% monomer content requirement for the named polymer. This thermosetting resin hardens irreversibly upon heating.
Melamine-Urea-Formaldehyde (MUF) Copolymer Resin
A copolymer resin where urea-formaldehyde units predominate over 95% by weight, used in laminated wood panels and molding compounds. Classified under HTS 3909.10.00.00 due to the predominant urea resin content per subheading note (a)(4). It offers enhanced moisture resistance compared to pure urea-formaldehyde.
Thiourea-Formaldehyde Resin Granules
Thiourea-formaldehyde resin in granular primary form, a sulfur analog of urea resins used in specialty adhesives and ion-exchange resins. It qualifies for HTS 3909.10.00.00 as explicitly named thiourea resins in primary forms. Less common than urea types but valued for chemical resistance.
Urea-Resin Molding Compound Pellets
Pelletized urea-formaldehyde resin in primary form for compression molding of electrical insulators and dinnerware. Falls under HTS 3909.10.00.00 as unmodified urea resin exceeding 95% polymer content. Provides high rigidity and heat resistance in finished molded articles.
Liquid Urea-Formaldehyde Pre-Condensate Resin
Low-molecular-weight liquid urea-formaldehyde resin (pre-polymer) in primary form for plywood glues, with >95% urea-formaldehyde units. Classified HTS 3909.10.00.00 as primary urea resin before final curing. Adjustable viscosity for spray or roller application in wood bonding.
Low-Formaldehyde Emission Urea Resin
Scavenger-modified urea-formaldehyde resin in primary powder form with reduced free formaldehyde for interior paneling. Still classified under HTS 3909.10.00.00 as the core urea resin meets 95% criteria per subheading note (a)(1). Meets CARB Phase 2 emission standards.