Clear MBS Copolymer Beads for PVC Toughening
High-clarity MBS copolymer beads in primary form, with precise 95%+ comonomer composition of methyl methacrylate, butadiene, and styrene. This material is explicitly named in subheading 3903.90.1000 for import classification. Essential for producing transparent, impact-resistant PVC sheets and films.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 6.5% | +35.0% | 41.5% |
| 🇲🇽Mexico | 6.5% | +10.0% | 16.5% |
| 🇨🇦Canada | 6.5% | +10.0% | 16.5% |
| 🇩🇪Germany | 6.5% | +10.0% | 16.5% |
| 🇯🇵Japan | 6.5% | +10.0% | 16.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If styrene-acrylonitrile (SAN) comonomers predominate
Predominant comonomer unit determines subheading per note (a)(4); SAN-dominant copolymers shift to specific 3903.20.
If imported as finished plates/sheets rather than primary pellets
Processed into non-cellular sheets or plates, these fall under 3920 as plastic plates rather than Chapter 39 primary polymers.
If when imported as prepared adhesive binder
MBS formulated specifically as adhesive binding agents is classified in 3506 for prepared glues rather than base polymers.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Require supplier COA (Certificate of Analysis) specifying exact monomer ratios; segregate from generic styrene copolymers during customs exam
• Pitfall: misdeclaration as polystyrene (3903.11) leads to penalties - always specify MBS designation
Related Products under HTS 3903.90.10.00
MBS Copolymer Resin Pellets
Transparent pellets of methyl methacrylate-butadiene-styrene (MBS) copolymer, where the comonomer units of methyl methacrylate, butadiene, and styrene contribute 95% or more by weight of the total polymer content. This specific copolymer is classified under HTS 3903.90.1000 as it falls within the named subheading for MBS copolymers in primary forms. Used primarily as an impact modifier for rigid PVC in manufacturing.
Impact-Modified MBS Polymer Granules
Granular primary form of MBS copolymer designed for high-impact applications, meeting the 95% weight threshold for methyl methacrylate-butadiene-styrene comonomers. Classified specifically under 3903.90.1000 due to the named copolymer designation in the HTS. Commonly added to PVC for clear, tough profiles like window frames.
MBS Impact Modifier Powder (Core-Shell Type)
Fine powder form of core-shell MBS copolymer where butadiene core is rubber-modified with MMA/styrene shell, meeting 95% comonomer criteria. Classified under the specific MBS subheading 3903.90.1000 in primary forms. Used in extrusion and injection molding for enhanced toughness.
High-Impact MBS Copolymer for Medical PVC
Phthalate-free MBS copolymer pellets optimized for medical-grade PVC applications, with verified 95%+ named comonomer content. Falls squarely under HTS 3903.90.1000 as named styrene copolymer in primary form. Provides clarity and impact resistance for IV bags and tubing.