METHOD FOR PREPARING DISINFECTING AGENT (VARIANTS) Russian patent published in 2004 - IPC

FIELD: chemical technology. SUBSTANCE: invention relates to method for preparing disinfecting agents. By the first variant disinfecting agents are prepared by condensation hexamethylenediamine with guanidine derivative in melt at 180-200 C for 1-2 h in the mole ratio hexamethylenediamine to guanidine derivative = 1 : (1.2-2). Ready product is purified in liquid organic acid medium and then equivalent amount of organic acid alkaline metal salt is added. Then ready product is isolated as a saline form and inorganic salt is removed. By the second variant disinfecting agents are prepared by condensation of hexamethylenediamine with hexamethylene diguanidine dihydrochloride in melt at 180-200 C for 1-2 h in the mole ratio hexamethylenediamine to hexamethylene diguanidine dihydrochloride = 1:1.2. Then ready product is treated with inorganic base and purification is carried out by extraction with organic solvent. Then product is treated with equivalent amount of organic or inorganic acid and isolated as a salt. Invention provides preparing disinfecting agents with high purity degree and reduced toxicity, enhanced stable disinfecting properties and minimal corrosive activity. Disinfecting agents can be used in medicine, veterinary science, agriculture, for water and air treatment in housing-communal service. EFFECT: improved preparing method. 4 cl, 3 tbl