Phosphenon PMP-300 Flame Retardant Resin
Phosphenon PMP-300 is a commercial-grade poly(1,3-phenylene methylphosphonate) resin in primary prill form for compounding into PC/ABS blends. HTS 3911.20.00.00 specifically covers this named phosphorus polymer meeting purity standards. Used primarily for high-performance flame-retardant thermoplastics.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied as masterbatch with carrier resin
Polymer concentrates/masterbatches containing >50% functional polymer classified in 3907 as polyacetals/polyethers, not pure polymers.
If for silicone-containing phosphonate variants
Silicones and resinous condensation products of formaldehyde classified in 3910 regardless of phosphonate modification.
If when used as synthetic organic coloring matter pigment
Phosphonate polymers functioning as pigments fall under Chapter 32 per Note 3 exclusions from plastics chapter.
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Import Tips & Compliance
• Include commercial invoice specifying 'Poly(1,3-phenylene methylphosphonate)' nomenclature exactly as HTS subheading; test for melt flow index consistency to prove primary form; register under TSCA for phosphorus polymers >0.1%
Related Products under HTS 3911.20.00.00
Poly(1,3-phenylene methylphosphonate) Resin Pellets
Poly(1,3-phenylene methylphosphonate), a phosphorus-containing polymer, is supplied in primary form as translucent pellets for processing into flame-retardant plastics. It falls under HTS 3911.20.00.00 as a specifically named polymer in primary forms (pellets) not elsewhere classified in Chapter 39. This material meets the subheading note requiring the named monomer units to contribute 95% or more by weight.
PMMP Flame-Retardant Polymer Granules
PMMP (Poly(1,3-phenylene methylphosphonate)) granules are primary-form thermoplastic resin used in engineering plastics for fire safety. Classified under HTS 3911.20.00.00 as the specifically enumerated phosphonate polymer meeting 95% monomer content requirement. These granules require melt processing into final flame-retardant components.
TE-33 Polyphosphonate Primary Pellets
TE-33 grade poly(1,3-phenylene methylphosphonate) pellets designed for extrusion into flame-retardant sheets and profiles. This primary form polymer is specifically named in HTS 3911.20.00.00 due to its defined chemical structure and 95%+ monomer purity. Provides halogen-free fire resistance in thermoplastics.