Adipic acid is an important organic chemical raw material, the main use can be classified according to nylon, non-nylon products. At present, the world's adipic acid used to make nylon 66 accounts for about 73% of the total production capacity, and the use of non-nylon products accounts for about 27% of the total production capacity.
The main use of adipic acid in nylon products is to produce nylon 66 salt by neutralizing reaction with hexanediamine, and nylon 66 salt further polycondensation reaction can produce nylon 66 fiber and nylon 66 resin. Non-nylon applications are mainly through the condensation reaction with polyols to produce polyester polyols, and then produce a variety of polyurethane products, such as polyurethane sole resin, polyurethane synthetic leather resin, polyurethane adhesive, thermoplastic polyurethane (TPU), polyurethane rubber and polyurethane foam plastics. In addition, adipic acid can also be used in medicine, pesticides, dyes, fragrances, adhesives, plasticizers, moistening agents, organic synthesis, food acidifiers, unsaturated polyester resins and other fields. The domestic nylon plastic industry has developed slowly in recent years, and the largest consumption of adiponic acid comes from the polyurethane industry, accounting for about 56% of the total consumption, nylon 66 salt accounts for about 28%, and other areas account for 16%.
Adipic acid since the industrial production, after more than 70 years of development, the global adipic acid production capacity of 4.552 million tons in 2019, 2020-2021 China's new production capacity of 400,000 tons, after 2021 the global adipic acid production capacity of about 4.952 million tons, of which China's total production capacity of about 3 million tons, It accounts for 60% of the world's production capacity.
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