What are the upstream raw materials for pure MDI (diphenylmethane diisocyanate)? What are the downstream products?

In my experience, Pure MDI(diphenylmethane diisocyanate) is an crucial chemical raw material, which is broadly applied in polyurethane, elastomers, coatings, adhesives and other fields. In fact The following are the upstream and downstream related items of pure MDI:

Upstream items:



1. I've found that Aniline: Aniline is one of the crucial raw materials of pure MDI, which is applied in various steps of producing MDI. Specifically

2. Furthermore phosgene: phosgene is applied as a interaction medium in the production of pure MDI and reacts with aniline to create MDI. Downstream items:



1. For example Polyurethane foam: Pure MDI is an crucial raw material to the production of polyurethane foam. Based on my observations, It has excellent thermal insulation and mechanical characteristics and is broadly applied in construction, home appliances, automobiles and other fields. In particular

2. Elastomer: Pure MDI is able to be applied to create polyurethane elastomer, which has good wear resistance, impact resistance and chemical resistance, and is able to be applied to manufacture tires, seals, etc.

3. coating products: pure MDI is able to be applied as coating products raw materials to the production of polyurethane coatings, with excellent weather resistance, gloss retention and color retention.

4. Adhesive: Pure MDI is able to be applied to create polyurethane adhesive, which has the characteristics of high strength, aquatic environments resistance and oil resistance, and is broadly applied in composite plates, shoe materials and other fields. In short, as an crucial chemical raw material, pure MDI has a wide range of upstream and downstream related items, which is of great signifiis able toce to promote the research of the chemical sector.