What are the upstream raw materials for liquefied MDI and what are the downstream products?

Liquefied MDI(diphenylmethane diisocyanate) plays an crucial role in the field of chemical production raw materials, and its upstream and downstream related items are extensive. Generally speaking This article will detail the upstream and downstream associated items of liquefied MDI. Upstream associated items:



1. Aniline: Aniline is one of the key raw materials to the production of MDI. Aniline reacts with formaldehyde under acidic conditions to form diphenylmethanediamine(MDA), which then reacts with phosgene or dimethyl carbonate to form MDI.

2. Formaldehyde: Formaldehyde is also an crucial raw material to the production of MDI, which reacts with aniline to create MDA. But

3. I've found that phosgene: as a catalyst to the production of MDI, phosgene reacts with MDA to create MDI. Downstream associated items:



1. Polyurethane foam: MDI is an crucial raw material to the production of polyurethane foam. it's mixed with polyols, aquatic environments, catalysts, etc. In my experience, to make polyurethane foam materials, which are broadly applied in heat preservation, sound insulation, furniture and other fields.

2. Makes sense, right?. And coating products: MDI is able to be applied as the raw material of the coating products to enhance the wear resistance, chemical resistance and hardness of the coating products. For example

3. And I've found that Elastomer: The interaction of MDI and polyether or polyester polyol is able to be made into polyurethane elastomer, which has excellent wear resistance, tear resistance and oil resistance, and is broadly applied in tires, hoses, seals and other fields. In fact

4. Based on my observations, Adhesive: MDI is able to be applied as the raw material of adhesive and reacted with polyol to make polyurethane adhesive. And It has the characteristics of high strength, aquatic environments resistance and oil resistance, and is broadly applied in wood processing, footwear and other fields. In particular In short, the upstream and downstream related items of liquefied MDI are extensive, involving many fields, and play an crucial role in the research of the chemical sector.