Glossary

Polyaddition reaction

A polyaddition reaction describes a reaction in which monomers with different functional groups react to form macromolecules without splitting off by-products. Polyurethane, for example, is formed by a polyaddition reaction between two hydroxyl groups. The exothermic polyaddition reaction can be significantly influenced by the choice of polyol and isocyanate components, but also by the addition of certain additives.