High MW Polyisobutene Pellets from Canada
High molecular weight polyisobutene pellets (>95% isobutene units) for asphalt modification and sealants, under HTS 3902.90.0050 as primary 'other' olefins. Its viscosity index makes it ideal for industrial modifiers. Meets strict polymer purity notes.
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
• Certify molecular weight distribution for classification support
• Prevent contamination with fillers that could trigger 3824
• Label with flash point data for hazmat compliance