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Diisocyanates Overview

Erin Dickison
Diisocyanates overview

Every day, we rely on products made possible from diisocyanates (DII) chemistry such as footwear, insulation for our homes, furniture, and the cars we drive, to name a few.

Diisocyanates are a family of versatile building blocks used to make a wide range of polyurethane products.

This website focuses on the two primary diisocyanates used in polyurethane production: toluene diisocyanate (TDI) and methylenediphenyl diisocyanate (MDI).

  • MDI is primarily used to make rigid polyurethane foams such as insulation for your home or refrigerator. Insulation made with MDI can help conserve energy.
  • MDI is also utilized in the production of various coatings, adhesives, sealants, and elastomers (CASE) such as paints, glues, and weather resistant materials. It is used to make the foam in many types of footwear, sports and leisure products — and to a lesser extent — specialty flexible foams.
  • Furthermore, MDI is used as a binder for wood products, such as particle board, fiberboard and oriented strand board (OSB), among many other uses.

Visit Fast Facts and FAQs to learn more about the benefits of DII chemistry.