METHOD OF PRODUCING CONCENTRATES OF ZEROVALENT METAL DISPERSIONS WITH ANTISEPTIC PROPERTIES Russian patent published in 2012 - IPC A61K9/10 A61K33/28 A61K33/34 A61K33/38 A61P31/02 B22F9/24 B01J13/00 B82B3/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing concentrates of nanodispersions of zerovalent metals such as silver, gold, copper, palladium, platinum and mercury, which have antiseptic properties. Said method involves mixing a solution of a soluble metal salt in a solvent with ammonia to obtain a complex which is then mixed with alkalnolamine to form a solution. The obtained solution is mixed with a solution of a polymer stabiliser to obtain a stabilised metal cation which is then reduced by adding to the solution an organic or inorganic reducing agent to form a stable dispersion of metal nanoparticles. The disclosed method is realised at a defined ratio of components for 10-60 minutes in an air atmosphere at temperature of up to 100°C.

EFFECT: invention is aimed at obtaining metal dispersions with high sedimentation and chemical resistance and high antiseptic power, which are compatible with a physiological NaCl solution; the method also cuts duration of synthesis and considerably simplifies the process, increases efficiency and complete conversion of cationic metal into a zerovalent metal.

38 cl, 3 tbl, 104 ex