MBS Impact Modifier Powder (Core-Shell Type) from Canada
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.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Document particle size distribution (typically 0.1-5 microns for powders) to prove primary form status
• Use ISCC PLUS certification for sustainable sourcing claims
• Common issue: dust mitigation labeling required for fine powders