Abstract

The present invention is related to an additive with biocidal properties based on an active agent with antimicrobial and antifouling properties, wherein the additive corresponds to a supporting material, inert substrate or carrier, which has been modified with antimicrobial agents. The invention further describes the method for modifying the supporting material, inert substrate or carrier, with antimicrobial agents. The resulting additives have a biocidal activity, and can be incorporated in different matrices, such as polymeric resins, either natural or synthetic, thermoplastic or thermostable, organic coatings, ceramics, paintings, varnishes and coatings, granting biocidal activity to those matrices.