Clear MBS Copolymer Beads for PVC Toughening from United States
Clear MBS copolymer beads in primary form, composed of methyl methacrylate, butadiene, and styrene with a combined comonomer content of 95% or more by weight. These beads are used as an impact modifier to toughen PVC products, enhancing clarity and durability. They fall under tariff item 3903.90.00 as 'Other' polymers of styrene in primary forms, since MBS copolymers are not specifically named in other subheadings of heading 39.03.
Duty Rate — United States → Canada
Import Tips
• Ensure the MBS copolymer beads meet the 95% comonomer content threshold for methyl methacrylate, butadiene, and styrene to qualify for this tariff item
• Provide a certificate of analysis or technical datasheet to the CBSA upon request to verify composition
• Consider applying for a ruling if the exact polymer composition is ambiguous