Styrene polymers; waste, parings and scrap

HS code 391520 covers the trade of styrene polymers, which are a class of thermoplastic materials derived from the monomer styrene. These polymers are widely used in a variety of industries, including packaging, construction, and automotive manufacturing, due to their versatility, durability, and cost-effectiveness. As a key component in the global plastics supply chain, the styrene polymers industry plays a vital role in supporting economic growth and development across numerous sectors.

The production of styrene polymers typically involves polymerization, a process where styrene monomers are chemically linked together to form long polymer chains. This can be achieved through various techniques, such as bulk polymerization, suspension polymerization, or emulsion polymerization, depending on the specific requirements of the final product. The resulting polymer is then often extruded or molded into the desired shapes and forms for various applications.

The main inputs required for the styrene polymers industry include the raw material, styrene monomer, as well as various additives and processing aids. Styrene monomer is typically derived from the petrochemical industry, either through the dehydrogenation of ethylbenzene or the direct synthesis from benzene and ethylene. In addition to the raw materials, the industry also relies on specialized machinery and equipment for the polymerization, extrusion, and molding processes.

The primary outputs of the styrene polymers industry are a wide range of plastic products, including 391510 Styrene polymers in primary forms, 392010 Plates, sheets, film, foil and strip, of plastics, and 392030 Plates, sheets, film, foil and strip, of plastics. These materials are then consumed by various downstream industries, such as packaging, construction, and automotive manufacturing, which utilize the unique properties of styrene polymers to create a diverse array of end-use products.