High MW Polyisobutene Pellets from Mexico
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 — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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