Melamine-formaldehyde resin for impregnation and liquid coating (type Melpap® XX)

Melamine-formaldehyde resins are obtained by reacting melamine with formaldehyde in an alkaline environment. Resin production is a multi-stage process with a variable temperature-time profile, different molar ratios of substrates, and different pH values. Alkaline metal hydroxides are most commonly used as condensation catalysts. At individual stages of resin production, additives are also introduced to improve the elasticity and stability of the resin. The product can be cured at elevated temperatures with the addition of a polycondensation catalyst based on acids or their salts and is used in the impregnation of decorative papers in the production of laminates and in the impregnation of moisture-resistant papers. Melpap 43 resins are used in the liquid coating process in the production of floor panels.