A novel class of waterborne two-component isocyanate curing resins

摘要

Waterborne two-component, polyisocyanate curing binders based on secondary emulsions often contain coalescents. They have been chosen as their high boiling points enable effective solution polymerisation. In this article, the effect of co-solvents on film properties has been investigated. In order to achieve this, secondary emulsions were prepared that were essentially free of any solvent. These NOVOS emulsions allow selection of the optimal coalescent for film performance and give the formulator increased flexibility of achieving the desired VOC level.