Patent ID: 8758823
Filing Date: 2014-06-24
Classification: A01N,C02F,C12G,D06M,Y10T

Abstract:
1. A method for preparing non-water-soluble powders having antibacterial activity, to a surface of which quaternary ammonium salts adhere, the method comprising the following stages: impregnation or wetting of a base powder having a particle size comprised between 5 μm and 500 μm with a solution of a soluble quaternary ammonium salt comprising substituents selected from C1-C15 alkyl derivatives; treatment of the powder thus impregnated with a saline solution of an acid which is a phosphate derivative with a molecular weight greater than 100 g/mol; and drying the powder; wherein the base powder is selected from the group consisting of an inorganic powder, thermoplastic polymers and thermosetting polymers.