3D printing or stereolithography is an additive process or technology in which 3D objects are made by adding successive layers of material, e.g. photopolymers, on top of each other. In the last few years, this promising technology has grown rapidly and has found numerous applications in various fields, such as the production of electrical components, dental, surgical and biomaterial implants [1-4]. However, in stereolithography, there is an urgent need to replace acrylic resins, i.e. to develop safer and eco-friendly approaches. More generally, the same situation exists in coatings, inks and paints industries, where alternatives ...