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

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Polyether polyol is an important chemical raw material, which is widely used in polyurethane foam, elastomers, adhesives, coatings and other fields. Its upstream and downstream related products are numerous, which will be described in detail below.

upstream products:

1. Ethylene oxide: Ethylene oxide is one of the main raw materials for the production of polyether polyols. Through the addition reaction of ethylene oxide and polyols, polyether polyols with different molecular weights and functionalities can be produced.
2. Propylene: Propylene is another raw material for the production of polyether polyols, propylene oxide is produced by the oxidation of propylene, and then reacted with polyols to produce polyether polyols.
3. Styrene: Styrene can also be used as a raw material for the production of polyether polyols in some specific cases. Polyether polyols containing styrene units can be prepared by copolymerization of styrene with ethylene oxide.

downstream products:

1. Polyurethane foam: Polyether polyol is one of the main raw materials for the production of polyurethane foam. It reacts with polyisocyanate to produce polyurethane foam, which is widely used in heat preservation, sound insulation, shock absorption and other fields.
2. Polyurethane elastomer: Polyether polyol can also be used to produce polyurethane elastomer, which has excellent wear resistance, oil resistance, aging resistance and other properties, and is widely used in machinery, automobile, aerospace and other fields.
3. Polyurethane adhesive: Polyether polyol can be used as the basic raw material of the adhesive, and it can react with polyisocyanate to produce polyurethane adhesive. It has high strength, water resistance, weather resistance and other properties, and is widely used in construction, automobile, furniture and other fields.
4. Polyurethane coating: Polyether polyol can also be used as the basic raw material of coating, mixed with polyisocyanate and other pigments and additives to obtain polyurethane coating, which has excellent weather resistance, chemical resistance and other properties, and is widely used in construction, automobile, ship and other fields.

In short, polyether polyols, as an important chemical raw material, have a wide range of upstream and downstream related products and involve many fields, which play an important role in the development of the chemical industry.

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