ANTIMICROBIAL COMPONENT AND METHOD FOR ITS PRODUCTION Russian patent published in 2023 - IPC C09D5/14 C01G9/02 B82B1/00 B82B3/00 

FIELD: components with biocidal properties.

SUBSTANCE: inventions group relates to obtaining a component with biocidal properties for use as an antibacterial component in paints and polymeric materials. The antimicrobial component consists of bicomponent nanoparticles homogeneously distributed in a solvent and a stabilizer. Nanoparticles have the structure of Janus nanoparticles, in which one part is represented by zinc oxide with an average size of 72±18 nm, the other part is represented by silver with an average size of 25±10 nm. The stabilizer is selected from the group consisting of polycarboxylate, polyvinylpyrrolidone, 2-amino-2-methyl-1-propanol, 8-hydroxyquinoline, phenanthroline, dipyridyl, or a combination thereof. The components are contained in the following ratio, wt%: ZnO/Ag nanoparticles 30 – 50; nanoparticle stabilizer 2.0 – 4.0; solvent 46 – 68. A method for obtaining an antimicrobial component is also proposed, including the introduction of bicomponent zinc oxide/silver nanoparticles into a stabilizer solution, and the interaction of the solvent with the stabilizer of the nanoparticles is carried out until complete dissolution, followed by batch introduction into the solution of bicomponent zinc oxide/silver nanoparticles obtained by the method joint electric explosion of zinc and silver wires, followed by treatment with a homogenizer with a rotor speed of 5000 rpm for 30 min.

EFFECT: increase in the antimicrobial activity of the obtained component is provided.

6 cl, 2 dwg, 1 tbl, 5 ex