Uncompounded Allyl Resin Diallyl Phthalate
Diallyl phthalate (DAP) resin in primary, uncompounded form is a thermosetting unsaturated polyester allyl resin used primarily for molding compounds in electrical insulators. It falls under HTS 3907.91.2000 as an uncompounded allyl resin, meeting the chapter note requirement where the allyl monomer units contribute over 95% by weight. This primary form is supplied as granules or powder before any additives or compounding.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied with fillers or pigments
Compounded allyl resins with additives over trace amounts fall under the 'other' subheading for compounded forms.
If predominant monomer is styrene rather than allyl
Chapter notes require classification by predominant monomer unit by weight; styrene-dominant polymers go to polystyrene headings.
If chemically modified or blended below 95% purity
Chemically modified polymers or mixtures not meeting specific polymer criteria classify as chemical preparations in Chapter 38.
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Import Tips & Compliance
• Confirm monomer composition via lab analysis to ensure allyl units exceed 95% by weight per Chapter 39 notes to avoid reclassification
• Provide supplier certificates specifying 'uncompounded' status and primary form
• Watch for common pitfalls like inadvertent addition of fillers which shifts to 3907.91.40
Related Products under HTS 3907.91.20.00
Uncompounded Allyl Diglycol Carbonate Resin
Allyl diglycol carbonate (CR-39) resin in uncompounded primary form serves as the base material for optical lenses and eyewear. Classified under HTS 3907.91.2000 as it qualifies as an uncompounded allyl resin with allyl ester monomers dominating over 95% by weight per subheading notes. Supplied as liquid or syrup for casting processes.
Uncompounded Diallyl Isophthalate Allyl Resin
Diallyl isophthalate (DAIP) resin, an uncompounded allyl polyester in primary granular form, used in high-performance composites for aerospace. HTS 3907.91.2000 applies as the allyl monomer units exceed 95% by weight, fitting the 'allyl resins, uncompounded' specification exactly. Ideal for prepreg manufacturing.
Uncompounded Allyl Resin for Electrical Laminates
Specialty uncompounded allyl resin formulated for electrical grade laminates and circuit boards, supplied in primary powder form. Falls under HTS 3907.91.2000 because it is an uncompounded allyl polyester resin with >95% allyl content by chapter note (a)(1). Used in varnishing processes before sheet molding.
Pure Uncompounded Triallyl Cyanurate Resin
Triallyl cyanurate (TAC) allyl resin in uncompounded primary form, a cross-linking agent resin for rubbers and composites. HTS 3907.91.2000 covers this as allyl resin where allyl units constitute 95%+ by weight per polymer classification notes. Distributed as free-flowing powder.
Uncompounded Allyl Ester Polyester Resin Grade A
Industrial grade A uncompounded allyl ester polyester resin in primary flake form for molding electrical components. Precisely matches HTS 3907.91.2000 as uncompounded allyl resin with qualifying monomer content per subheading note (a). High purity for precision applications.