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

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Polyvinyl alcohol (PVA) is an important chemical raw material, which is widely used in many fields. In the upstream and downstream associated products, PVA is mainly associated with the following products:

Upstream associated products:

1. Vinyl acetate: Vinyl acetate is the main raw material for the production of polyvinyl alcohol, and PVA is produced through polymerization.
2. Methanol: Methanol is one of the raw materials in the production of vinyl acetate and a by-product in the production of PVA.
3. Ethylene: Ethylene is an important raw material for vinyl acetate and is therefore also associated with the production of PVA.

downstream related products:

1. Building materials: PVA can be used as an additive for building materials to improve the strength and water resistance of materials.
2. Cellulose fibers: PVA can be used to produce cellulose fibers for the production of clothing, textiles, etc.
3. Adhesive: PVA can be used as an adhesive for bonding various materials, such as wood, paper, glass, etc.
4. Coating: PVA can be used as a film-forming agent for coatings to improve the water resistance and weather resistance of coatings.

In short, polyvinyl alcohol, as an important raw material for the production of chemical products, is associated with many upstream and downstream products and is widely used in various fields.

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