METHOD OF SYNTHESIS OF POLYHEXAMETHYLENE-GUANIDINE HYDROCHLORIDE Russian patent published in 2002 - IPC

FIELD: organic chemistry, polymers. SUBSTANCE: invention relates to synthesis of disinfecting agents used in medicine and veterinary science. Synthesis of polyhexamethyleneguanidine hydrochloride is performed by interaction of hexamethylenediamine with guanidine hydrochloride. Guanidine hydrochloride is prepared by interaction of concentrated hydrochloric acid with guanidine carbonate where hexamethylenediamine is added in stoichiometric ratio. Process is carried out without water distillation at solution boiling point 102-107 C under normal pressure up to preparing polymer with reduced viscosity 0.03-0.08. Invention provides enhanced content of basic substance in end product and decreased energy consumption by 30%, not less. EFFECT: improved method of synthesis, simplified technology. 2 tbl, 1 ex