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 are essential building blocks for many products, from adhesives and coatings to textiles and packaging materials. They play a crucial role in the global economy, contributing to the development of innovative and sustainable solutions across multiple sectors.

The production of polymers under HS code 391390 typically involves a series of chemical processes. Natural polymers, such as cellulose and starch, are often extracted and purified from plant-based sources. Modified natural polymers are then created by chemically altering the natural polymers to enhance their properties and performance. Common production techniques include polymerization, copolymerization, and chemical modification, which are used to tailor the polymers' molecular structure and characteristics to meet specific application requirements.

The main inputs for the production of polymers under HS code 391390 include various natural and synthetic raw materials, such as cellulose, starch, and other plant-based sources. Specialized chemicals, catalysts, and processing equipment are also essential for the manufacturing process. Depending on the specific polymer type, the industry may also rely on energy sources, water, and other supporting resources to ensure efficient and sustainable production.

The polymers produced under HS code 391390 are used in a wide range of applications, including 391710 (Tubes, pipes and hoses, and fittings therefor (for example, joints, elbows, flanges), of plastics), 392010 Other plates, sheets, film, foil and strip, of plastics, non-cellular and not reinforced, laminated, supported or similarly combined with other materials, and 392020 Other plates, sheets, film, foil and strip, of plastics, cellular. These polymers can be further processed and combined with other materials to create a diverse array of products, contributing to the development of various industries and the overall economy.