3911.10.00.00 - Petroleum resins, coumarone, indene or coumarone-indene resins; polyterpenes

This HTS classification, 3911.10.00.00, specifically covers petroleum resins, coumarone resins, indene resins, and coumarone-indene resins. These are synthetic resins derived from petroleum or coal tar distillates. They are characterized by their tackifying properties and are often used in adhesives, coatings, printing inks, and as modifiers for rubber and other plastics. Polyterpenes, which are resins derived from terpenes, are also included in this category, typically used in adhesives, chewing gum bases, and fragrances.

When classifying within Chapter 39, it is important to distinguish this category from its sibling, 3911.20.00.00, which pertains solely to poly(1,3-phenylene methylphosphonate), a specific organophosphorus polymer. Additionally, the "Other" category at 3911.90.00.00 serves as a residual for other products listed in Note 3 to Chapter 39 that are not specifically classified under 3911.10 or 3911.20.

As a leaf node, 3911.10.00.00 does not have further subdivisions. Therefore, the focus for classification within this code is on ensuring the resin in question is indeed a petroleum resin, coumarone resin, indene resin, coumarone-indene resin, or a polyterpene, and that it is presented in its primary form, such as powders, granules, or bulk liquids, before further processing into finished articles.