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

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Pentylene glycol is an important organic chemical raw material, which is widely used in the production of various chemicals. Its upstream and downstream related products mainly include the following aspects:

Upstream products:

1. Ethylene: The production of pentanediol mainly uses ethylene as raw material and is obtained through oxidation, hydrolysis and other reactions.

2. Acetic acid: Acetic acid is another important raw material for the production of pentanediol. Pentanediol is obtained by the reaction of acetic acid with formaldehyde and then reduced by hydrogenation.

downstream products:

1. Polyester resin: pentanediol can react with acid anhydride such as terephthalic acid to generate polyester resin, which is used in the production of coatings, adhesives, etc.

2. Elastomers: pentanediol can react with diisocyanate and other raw materials to generate polyurethane elastomers for the production of tires, seals, etc.

3. Plasticizer: Pentylene glycol can be used as a plasticizer to improve the processing performance and use performance of plastics.

4. Antioxidant: Pentylene glycol can be used as an antioxidant to prevent oxidative aging of polymers, fats and other substances.

In short, as an important organic chemical raw material, pentanediol has a wide range of upstream and downstream related products, involving many fields, such as coatings, adhesives, elastomers, plastics, greases, etc.

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