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[Chemical Knowledge]：What are the upstream raw materials for 1.4-butanediol? What are the downstream products?

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1.4-Butanediol (BDO) is an important organic chemical raw material, which is widely used in pharmaceutical, chemical, textile and other fields. In the field of raw materials for chemical production, there are many upstream and downstream related products of 1.4-butanediol, some of which are described in detail below.

upstream products:

1. Acetylene: Acetylene is one of the main raw materials for the production of 1.4-butanediol. High-quality 1.4-butanediol can be produced by the acetylene method.

2. Formaldehyde: Formaldehyde is also one of the important raw materials for the production of 1.4-butanediol. Through the reaction of formaldehyde and acetylene, 1,4-butynediol can be generated, and then 1.4-butanediol can be obtained by hydrogenation reaction.

downstream products:

1. Polybutylene terephthalate (PBT):1.4-butanediol is one of the important raw materials for the production of PBT. It reacts with terephthalic acid to generate PBT resin. It has excellent mechanical properties, heat resistance, chemical resistance and other characteristics, and is widely used in automobiles, electronics, home appliances and other fields.

2. Tetrahydrofuran (THF):1.4-butanediol can be dehydrocyclized to produce THF,THF is an important solvent and chemical raw materials, can be used to produce polyurethane, polyether, polymer and so on.

3. γ-butyrolactone (GBL):1.4-butanediol can be esterified to generate GBL,GBL is an excellent solvent and chemical raw materials, can be used in the production of pesticides, pharmaceutical intermediates, spices and so on.

4. Polytetramethylene ether glycerol (PTMEG):1.4-butanediol can undergo catalytic polymerization to generate PTMEG,PTMEG is an important polyurethane raw material, which can be used to produce elastomers, coatings, adhesives and so on.

In short, 1.4-butanediol plays an important role in the field of chemical production raw materials, and its upstream and downstream related products are extensive, which is of great significance to promote the development of the chemical industry.

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