ALTON AT 837 water-based additive free from ethoxylated nonylphenol, waxes and fats and paraffin specially designed for impregnated paper production. It contains special components that prevent sheets  from blocking caused by moisture absorption; when added into a resin, the surface properties, typically the oleo-hydro repellency, can be improved as effect of its cross-linking/ filming characteristics. Dosing ALTON AT 837 (0,1-0,2 %) with UF resin in the impregnation bath, the UF resin migration to the paper surface is strongly reduced. (more info)