This website is produced by ISOPA – the European Diisocyanate and Polyol Producers Association.

ISOPA is the European trade association for producers of diisocyanates and polyols, the main building blocks of polyurethanes. The association aims to:

  • promote the highest standards of best practice in the distribution and use of diisocyanates and polyols
  • ensure that all stakeholders can easily access accurate and up-to-date information on diisocyanates and polyols
  • demonstrate how polyurethanes can help meet society’s present and future needs

For more information on ISOPA, please visit

Our members

ISOPA represents all the major producers of diisocyanates and polyols operating in Europe. Our members are: