Polymers, natural and modified natural; in primary forms (excluding alginic acid, its salts and esters)

HS code 391390 covers a diverse range of natural and modified natural polymers that are used in a wide variety of industries. These polymers serve as essential raw materials for the production of various consumer and industrial goods, playing a crucial role in the global economy. Their versatility and unique properties make them indispensable in applications ranging from packaging and textiles to pharmaceuticals and construction.

The production of polymers under HS code 391390 typically involves a combination of chemical and physical processes. Natural polymers, such as cellulose and starch, are often extracted and purified from their source materials, while modified natural polymers are created by chemically altering the structure of these natural compounds. The specific techniques used can vary depending on the type of polymer, but may include polymerization, cross-linking, and other chemical reactions to achieve the desired properties.

The main inputs required for the production of polymers under HS code 391390 include various natural and synthetic raw materials, such as 440310 Wood in the rough, 100190 Wheat and meslin, and 290511 (Methanol (methyl alcohol)). Additionally, specialized equipment and machinery, as well as energy sources, are necessary for the various processing and manufacturing steps involved.

The polymers produced under HS code 391390 are used as inputs for a wide range of downstream industries and products. These include 392010 Plates, sheets, film, foil and strip, of polymers of ethylene, non-cellular and not reinforced, laminated, supported or similarly combined with other materials, 392020 Plates, sheets, film, foil and strip, of polymers of propylene, non-cellular and not reinforced, laminated, supported or similarly combined with other materials, and 392030 Plates, sheets, film, foil and strip, of polymers of styrene, non-cellular and not reinforced, laminated, supported or similarly combined with other materials, among others. The versatility of these polymers allows them to be utilized in a diverse range of applications, from packaging and textiles to construction and medical devices.