The invention relates to an impregnating resin composition containing a) a melamine formaldehyde resin, b) a non-ionic wetting agent, c) a non-ionic release agent, d) a hardener, and e) polyhexamethylene guanidine (PHMG). The invention further relates to a resin coating which can be obtained by condensing the impregnating resin composition and to a resin coating containing a co-condensate made of the melamine formaldehyde resin and polyhexamethylene guanidine (PHMG). The invention further relates to an impregnate containing i) the impregnating resin composition or the resin coating and ii) an impregnate carrier material. Another object of the invention is a laminate containing iii) a laminate carrier material and iv) the impregnate or the impregnating resin composition, or the resin coating. A further object of the invention is a method for producing a laminate having the steps of i) applying the impregnating resin composition or the resin coating or the impregnate onto a carrier material and ii) compressing the component from step i). In addition, the invention concerns the use of the impregnating resin composition or the resin coating in the production of wood-based materials, impregnates, and/or laminates.