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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.