METHOD OF DISINFECTING AGENT PREPARING Russian patent published in 2000 - IPC

FIELD: antibacterial preparations. SUBSTANCE: method involves interaction of hexamethylenediamine dihydrochloride with dicyanediamide and hexamethylenediamine at 160 C for 7-10 h. At the first stage product is reprecipitated with 15-25-% aqueous solution of sodium or potassium salt and at the second stage with 10-14-% aqueous solution of sodium chloride at temperature 30 C, not above. To obtained concentrate 26-40-% aqueous solution of dehydroacetic acid sodium salt (pH is 8, not below) and 0.1-1% of polyvinylpyrrolidone (molecular mass is 12 500 Da, not above) are added. Invention can be used for prophylaxis of formation of moldy fungus, yeast, biofilms. EFFECT: enhanced effectiveness against biofilms, increased stability in storage. 3 cl