Rapid Prototyping involved creating a working model of various parts of the system at a very early stage, after a relatively short investigation. The method used in building it is usually quite informal, the most important factor being the speed with which the model is provided.
There are water-and solvent-based -- also called oil-based -- polyurethane varnishes. Water-based polyurethanes are more environmentally friendly and safer to use than solvent-based, but they are not as resistant to wear and tear as solvent-based products.
In contrast, urethane mortar (cementitious urethane) flooring is the ideal flooring for commercial kitchens, as it can stand up to the harsh environment of a commercial kitchen. Here are our top 3 fast-curing Florock flooring systems for commercial kitchens 1  : FloroCrete SL X Urethane Mortar Flooring.