3904.30 - Vinyl chloride-vinyl acetate copolymers:

This HTS category, 3904.30, specifically covers copolymers of vinyl chloride and vinyl acetate when presented in their primary forms, such as powders, granules, or pellets. These materials are formed by the polymerization of both vinyl chloride and vinyl acetate monomers, resulting in unique physical and chemical properties that differ from homopolymers of either monomer. The ratio of vinyl chloride to vinyl acetate can vary, influencing characteristics like flexibility, solubility, and adhesion, making them suitable for a range of industrial applications.

It's important to distinguish this category from its siblings. HTS code 3904.10.00.00 covers pure poly(vinyl chloride) without any other substances. Category 3904.40.00.00 addresses other vinyl chloride copolymers where vinyl acetate is not the primary comonomer. Similarly, 3904.50.00.00 is reserved for vinylidene chloride polymers. This category, 3904.30, is exclusively for the direct copolymerization product of vinyl chloride and vinyl acetate.

Within this category, further subdivisions exist to refine classification. Subcategory 3904.30.20.00 addresses specific terpolymers that include ethylene alongside vinyl acetate and vinyl chloride, with a defined lower limit on vinyl acetate content and excluding certain aromatic monomer origins. The residual subcategory, 3904.30.60.00, encompasses all other vinyl chloride-vinyl acetate copolymers not meeting the specific criteria of the preceding subdivision. These distinctions are crucial for accurate duty assessment and trade statistics.