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[Chemical Knowledge]：What are the upstream raw materials for polymeric MDI and what are the downstream products?

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The upstream and downstream associated products
of polymeric MDI
polymeric MDI, that is, polymeric diphenylmethane diisocyanate, which is an important raw material for the production of chemical products. In the chemical industry chain, polymeric MDI is used both as a raw material for the production of other chemicals and as an important component in the production of final products. As a result, it has numerous upstream and downstream associated products. This article will explore the upstream and downstream associated products of aggregated MDI.

upstream products

1. Benzene: Benzene is one of the main raw materials for the polymerization of MDI. Benzene is converted through a series of chemical reactions into monomers of MDI, which are further polymerized into polymeric MDI.
2. Toluene diisocyanate (TDI):TDI is another raw material used in the production of polymeric MDI. It reacts with benzene to produce MDI monomer.

Downstream Products

1. Polyurethane Foam: Polymeric MDI is widely used in the production of polyurethane foam. This foam material has excellent thermal insulation and mechanical properties, and is widely used in construction, home appliances, automobiles and other fields.
2. Elastomers: Polymeric MDI can be used to produce polyurethane elastomers, such as shoe soles, tires, etc. These elastomers have excellent abrasion resistance, impact resistance and oil resistance.
3. Coating: Polymeric MDI can be used as the basic component of the coating to improve the weather resistance, chemical resistance and hardness of the coating.
4. Adhesive: Polymeric MDI can be used to produce polyurethane adhesive, which has the characteristics of high strength, water resistance and oil resistance, and is widely used in composite plates, footwear, furniture and other fields.

In summary, there are many upstream and downstream related products of aggregated MDI, involving many fields, such as construction, home appliances, automobiles, footwear, furniture, etc. With the continuous development of science and technology, the application field of aggregate MDI will continue to expand, and its upstream and downstream related products will also continue to increase.

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