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[Chemical Knowledge]：What are the upstream raw materials of polycarbonate resin? What do the downstream products contain?

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Polycarbonate resin (Polycarbonate Resin) is a high-performance engineering plastic with excellent mechanical properties, optical properties, electrical properties and thermal properties, widely used in automotive, electrical and electronic, construction, packaging, medical equipment and other fields. In the field of raw materials for chemical production, the upstream and downstream related products of polycarbonate resin mainly include the following aspects:

upstream raw materials:

1. bisphenol A(Bisphenol A): bisphenol A is the main raw material for the production of polycarbonate resin, accounting for about 60% of the production cost of polycarbonate resin. Bisphenol A is usually prepared by reacting phenol with acetone in the presence of an acidic catalyst.
2. Phosgene (Phosgene): Phosgene is another important raw material for the production of polycarbonate resin, which reacts with bisphenol A to produce polycarbonate. Phosgene is a toxic gas and needs to be operated under strict safety measures.

downstream related products:

1. Modified polycarbonate resin: In order to further improve the performance of polycarbonate resin, it can be modified. Common modification methods include adding glass fiber, minerals, flame retardants, etc., to improve the strength, heat resistance, flame retardancy and other properties of polycarbonate resin.
2. Polycarbonate sheet: Polycarbonate resin is processed into sheets, which can be used in construction, automobile, electronic and electrical fields. Polycarbonate sheet has the advantages of high transparency, light weight, high strength, impact resistance, etc., and can be used to make doors and windows, partitions, enclosures, etc.
3. Polycarbonate film: Polycarbonate resin is processed into film, which can be used in packaging, electrical insulation, optical devices and other fields. Polycarbonate film has the advantages of high transparency, heat resistance, cold resistance, electrical insulation and so on.
4. Polycarbonate fiber: Polycarbonate resin is processed into fiber, which can be used in textile, papermaking, filtration and other fields. Polycarbonate fiber has the advantages of high strength, high modulus, heat resistance, chemical resistance and so on.

In short, the upstream and downstream related products of polycarbonate resin are very extensive, involving many fields, and are of great significance to the development of the chemical industry.

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