A process for producing fibrous material with antimicrobial properties, characterized in that it comprises the following steps: I) emulsifying coniferous resin acid composition into aqueous solution with emulsifier and wetting agent, wherein the emulsifier is selected from C10-C18 alpha olefins, preferably from C12-C16 alpha olefins and the coniferous resin acid composition is first dissolved in solvent selected from ethylene glycol monomethyl ether (2-methoxyethanol), ethylene glycol monoethyl ether (2-ethoxyethanol), ethylene glycol monopropyl ether (2-propoxyethanol), ethylene glycol monoisopropyl ether (2-isopropoxyethanol), ethylene glycol monobutyl ether (2-butoxyethanol), ethylene glycol monophenyl ether (2-phenoxyethanol), ethylene glycol monobenzyl ether (2-benzyloxyethanol), diethylene glycol monomethyl ether (2-(2-methoxyethoxy)ethanol, methyl carbitol), diethylene glycol monoethyl ether (2-(2-ethoxyethoxy)ethanol, carbitol cellosolve), diethylene glycol mono-n-butyl ether (2-(2-butoxyethoxy)ethanol, butyl carbitol), dipropylene glycol methyl ether, dipropylene glycol methyl ether acetate, dipropylene glycol n-butyl ether, dipropylene glycol n-propyl ether, propylene glycol diacetate, propylene glycol methyl ether, propylene glycol methyl ether acetate, propylene glycol n-butyl ether, propylene glycol n-propyl ether, propylene glycol phenyl ether, tripropylene glycol methyl ether, tripropylene glycol n- butyl ether or dipropylene glycol dimethyl ether and/or mixtures thereof, or wherein the emulsifier is selected from ethoxylated aliphatic amines, wherein the degree of ethoxylation is ranging from 2 to 15 moles, and the coniferous resin acid composition is first dissolved in isopropanol, II) transferring the thus formed emulsion into fibrous material by impregnation. I) emulsifying coniferous resin acid composition into aqueous solution with emulsifier and wetting agent, wherein the emulsifier is selected from C10-C18 alpha olefins, preferably from C12-C16 alpha olefins and the coniferous resin acid composition is first dissolved in solvent selected from ethylene glycol monomethyl ether (2-methoxyethanol), ethylene glycol monoethyl ether (2-ethoxyethanol), ethylene glycol monopropyl ether (2-propoxyethanol), ethylene glycol monoisopropyl ether (2-isopropoxyethanol), ethylene glycol monobutyl ether (2-butoxyethanol), ethylene glycol monophenyl ether (2-phenoxyethanol), ethylene glycol monobenzyl ether (2-benzyloxyethanol), diethylene glycol monomethyl ether (2-(2-methoxyethoxy)ethanol, methyl carbitol), diethylene glycol monoethyl ether (2-(2-ethoxyethoxy)ethanol, carbitol cellosolve), diethylene glycol mono-n-butyl ether (2-(2-butoxyethoxy)ethanol, butyl carbitol), dipropylene glycol methyl ether, dipropylene glycol methyl ether acetate, dipropylene glycol n-butyl ether, dipropylene glycol n-propyl ether, propylene glycol diacetate, propylene glycol methyl ether, propylene glycol methyl ether acetate, propylene glycol n-butyl ether, propylene glycol n-propyl ether, propylene glycol phenyl ether, tripropylene glycol methyl ether, tripropylene glycol n- butyl ether or dipropylene glycol dimethyl ether and/or mixtures thereof, or wherein the emulsifier is selected from ethoxylated aliphatic amines, wherein the degree of ethoxylation is ranging from 2 to 15 moles, and the coniferous resin acid composition is first dissolved in isopropanol, wherein the emulsifier is selected from C10-C18 alpha olefins, preferably from C12-C16 alpha olefins and the coniferous resin acid composition is first dissolved in solvent selected from ethylene glycol monomethyl ether (2-methoxyethanol), ethylene glycol monoethyl ether (2-ethoxyethanol), ethylene glycol monopropyl ether (2-propoxyethanol), ethylene glycol monoisopropyl ether (2-isopropoxyethanol), ethylene glycol monobutyl ether (2-butoxyethanol), ethylene glycol monophenyl ether (2-phenoxyethanol), ethylene glycol monobenzyl ether (2-benzyloxyethanol), diethylene glycol monomethyl ether (2-(2-methoxyethoxy)ethanol, methyl carbitol), diethylene glycol monoethyl ether (2-(2-ethoxyethoxy)ethanol, carbitol cellosolve), diethylene glycol mono-n-butyl ether (2-(2-butoxyethoxy)ethanol, butyl carbitol), dipropylene glycol methyl ether, dipropylene glycol methyl ether acetate, dipropylene glycol n-butyl ether, dipropylene glycol n-propyl ether, propylene glycol diacetate, propylene glycol methyl ether, propylene glycol methyl ether acetate, propylene glycol n-butyl ether, propylene glycol n-propyl ether, propylene glycol phenyl ether, tripropylene glycol methyl ether, tripropylene glycol n- butyl ether or dipropylene glycol dimethyl ether and/or mixtures thereof, or wherein the emulsifier is selected from ethoxylated aliphatic amines, wherein the degree of ethoxylation is ranging from 2 to 15 moles, and the coniferous resin acid composition is first dissolved in isopropanol, II) transferring the thus formed emulsion into fibrous material by impregnation.