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

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Polyethylene terephthalate (PET) is an important raw material for chemical production, which is widely used in plastics, fibers and films. There are many upstream and downstream related products, some of which are described in detail below.

upstream related products:

1. Terephthalic acid (PTA):PTA is one of the main raw materials of PET, accounting for about 60% of the production cost of PET. The production of PTA mainly adopts oxidation method, that is, acetic acid is used as solvent, and p-xylene is oxidized by air.

2. Ethylene glycol (EG): Ethylene glycol is another main raw material of PET, accounting for about 30% of the production cost of PET. The production of ethylene glycol mainly adopts ethylene oxidation method, that is, ethylene is used as raw material to produce ethylene glycol through oxidation reaction.

downstream related products:

1. PET fiber: PET fiber is a widely used synthetic fiber with good wear resistance, wrinkle resistance and elastic recovery performance. It is often used to make clothing, bedding and industrial textiles.

2. PET plastic bottles: PET plastic bottles have the advantages of light weight, transparency, pressure resistance, corrosion resistance, etc., and are widely used in packaging beverages, food and other fields.

3. PET film: PET film has excellent mechanical properties, electrical insulation properties and chemical resistance, can be used in electrical insulation, electronic devices, packaging materials and other fields.

4. PET engineering plastics: PET engineering plastics have high thermal stability, chemical resistance and excellent mechanical properties, and can be used to manufacture chemical equipment and auto parts under high temperature and high pressure.

In summary, there are many upstream and downstream related products of polyethylene terephthalate, involving plastics, fibers, films, engineering plastics and other fields, which play an important role in promoting the development of the chemical industry.

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