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[Chemical Knowledge]：What are the upstream raw materials for nylon? What do the downstream products contain?

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Nylon is a synthetic polymer, which is widely used in the field of chemical production raw materials. There are many upstream and downstream related products, some of which are described in detail below.

upstream products:

1. Adipic acid: Adipic acid is one of the main raw materials of nylon 66. It reacts with hexamethylene diamine to generate nylon 66 salt, and further processing can obtain nylon 66 fiber and resin.
2. hexamethylene diamine: hexamethylene diamine is also one of the main raw materials of nylon 66, which reacts with adipic acid to produce nylon 66 salt.
3. Phenol: Phenol is the main raw material of nylon 4, which reacts with formaldehyde to produce phenolic resin, and then reacts with caprolactam to obtain nylon 4.
4. Cyclohexane: Cyclohexane is one of the raw materials of nylon 6. Cyclohexanone is generated by oxidation reaction, and then caprolactam is generated by hydroxylamine reaction, and finally processed into nylon 6.

downstream products:

1. Nylon fiber: Nylon fiber has the advantages of high strength, high toughness, wear resistance, corrosion resistance, etc., and is widely used in textiles, ropes, filters and other fields.
2. Nylon resin: Nylon resin has good mechanical properties, heat resistance, cold resistance, dimensional stability, etc., and is widely used in automobiles, electronic appliances, construction, aerospace and other fields.
3. Nylon composite materials: Nylon can be combined with other materials such as glass fiber and carbon fiber to improve the strength and toughness of the material and further expand its application fields.

In short, as an important product in the field of chemical production raw materials, nylon has many upstream and downstream related products, involving many fields, which is of great significance to economic development and technological progress.

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