Abstract:
Aminoplastic laminates and processes for their preparation are disclosed using a novel urea-modified melamineformaldehyde resin system which resin has a urea content of 4-50%, a molar ratio of formaldehyde per three NH2 groups from the urea or melamine of between 1:1 and 2.5:1. The resin is used in solution and contains 0.2 to 1.4% of SiO2 present as a water soluble silicate. The resin system is impregnated into paper stock and laminated onto a suitable substrate such as particle board with heat and pressure. The resulting laminates arc less costly than melamine-formaldehyde based resins and are useful as decorative panels, countertops or the like.