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[Chemical Knowledge]：What are the upstream raw materials of TDI? What are the downstream products?

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TDI (toluene diisocyanate) is an important chemical raw material, which is widely used in the manufacture of polyurethane materials. In the field of chemical production, TDI has many upstream and downstream related products, and some of the main upstream and downstream products will be described in detail below.

upstream products:

1. Toluene: Toluene is one of the main raw materials of TDI and is used to produce TDI monomers.
2. phosgene: phosgene is an important raw material in the production process of TDI, which reacts with toluene to form TDI.

downstream products:

1. Polyurethane foam: TDI reacts with polyols, water and other raw materials to generate polyurethane foam materials, which are widely used in furniture, construction, automobiles and other fields.
2. Coating: TDI can be used as an important component of coatings to improve the weather resistance and chemical resistance of coatings.
3. Elastomers: TDI can be used to produce polyurethane elastomers with excellent abrasion resistance, impact resistance and elasticity.
4. Adhesive: TDI can be used to manufacture polyurethane adhesive, with high strength, water resistance, oil resistance and other characteristics, widely used in composite plates, shoes and other fields.

In short, TDI, as an important chemical raw material, plays an important role in the field of polyurethane material manufacturing. Its upstream and downstream related products are numerous, involving many fields, such as furniture, construction, automobiles, coatings, adhesives, etc. Understanding the upstream and downstream products of TDI will help to better understand the position and role of TDI in the field of chemical production, and also help enterprises to better grasp the market opportunities and development direction.

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