The invention relates to a biocidal resin composition including one or a plurality of resins selected from melamine-formaldehyde, urea-formaldehyde, phenol-formaldehyde, melamine-urea-formaldehyde and phenolic resins； and more than one copper salt that is soluble in aqueous systems and in said resin solutions, wherein the copper salt is generally selected from organic copper salts, R-Cu, R1-Cu-R2, wherein R, R1 and R2 can be (C3-C18) alkyl chains with one or a plurality of acid, aldehyde, ester, ether, hydroxy or amino groups, among others, in the structure thereof. The invention also relates to the method for manufacturing the biocidal resin composition and to the use of said biocidal resin compositions to obtain, for example, flooring, impregnated paper, adhesive mixtures and moulded products. The invention further relates to wood covered with paper impregnated with biocidal resin compositions and to the method for obtaining same； and to a method for manufacturing moulded products having biocidal action. The invention relates to a biocidal resin composition including one or a plurality of resins selected from melamine-formaldehyde, urea-formaldehyde, phenol-formaldehyde, melamine-urea-formaldehyde and phenolic resins； and more than one copper salt that is soluble in aqueous systems and in said resin solutions, wherein the copper salt is generally selected from organic copper salts, R-Cu, R1-Cu-R2, wherein R, R1 and R2 can be (C3-C18) alkyl chains with one or a plurality of acid, aldehyde, ester, ether, hydroxy or amino groups, among others, in the structure thereof. The invention also relates to the method for manufacturing the biocidal resin composition and to the use of said biocidal resin compositions to obtain, for example, flooring, impregnated paper, adhesive mixtures and moulded products. The invention further relates to wood covered with paper impregnated with biocidal resin compositions and to the method for obtaining same； and to a method for manufacturi
