Healthy resins for a better future, based on fatty acid modified polyurethane dispersion

 
Neutralizing amines, and in particular triethylamine, are widely used in waterbased polyurethane dispersions. Often in combination with dimethylol propionic acid they provide the required stabilization of particles. After application these amines evaporate from the coating, which has been confirmed by independent measurements. However, triethylamine is classified as toxic, and as it is volatile it has a large environmental impact. To ensure a better future, radical changes in the chemistry and stabilization mechanisms are required. Therefore a novel mechanism was introduced, which has resulted in the development of a next generation of polyurethane binders that contain no VOC, are label-free, and fulfill all the requirements for indoor air quality and other voluntary certifications, this without jeopardizing any of the excellent performance of the corresponding paints.