Maleated Natural Rubber (MNR) from Mexico
Maleated natural rubber (MNR) is natural rubber with maleic anhydride grafted onto its backbone, improving adhesion in rubber composites and coatings. It is supplied in primary forms such as crumb or powder. The grafting constitutes a chemical modification, placing it under tariff item 3913.90.00.
Duty Rate — Mexico → Canada
0%
Import Tips
• Document the grafting process and the percentage of maleic anhydride to support classification as a chemically modified natural polymer
• Keep the product in primary forms (crumb or powder) to avoid classification as an article
• Check with the CBSA for any required permits or certificates for rubber derivatives