3906.90.10.00 - Elastomeric

This HTS category, 3906.90.10.00, specifically designates elastomeric acrylic polymers in their primary forms. Elastomeric acrylic polymers are characterized by their ability to stretch and return to their original shape, exhibiting rubber-like properties. These polymers are typically supplied as liquids, pastes, granules, powders, or blocks, and have not undergone further processing beyond their initial polymerization. Their utility lies in applications where flexibility and resilience are paramount, such as in adhesives, coatings, sealants, and certain types of textiles.

Within the broader category of "Acrylic polymers in primary forms," this "Other" subcategory, further refined to "Elastomeric," distinguishes itself from other acrylic polymer classifications by its inherent elasticity. Other "Other" acrylic polymers might include those lacking significant elastomeric properties or those intended for different primary applications. This specific classification hinges on the material's molecular structure and its resulting physical behavior under stress.

As this is a leaf node in the HTS, there are no further subcategories. Classification under 3906.90.10.00 is final once the material meets the definition of an elastomeric acrylic polymer in its primary form. Importers and exporters should ensure that the product's technical specifications confirm its elastomeric nature and that it is indeed presented in a primary form, such as a liquid emulsion, solid pellets, or fine powder, before the final customs declaration.