METHOD OF PRODUCING DI- AND POLYAMINES Russian patent published in 2004 - IPC

FIELD: industrial organic synthesis. SUBSTANCE: invention concerns production of aliphatic di- and polyamines, which are widely used as amine- type hardeners for epoxide resins, in manufacture of additives, polymers, and fungicidal agents. Implementation of method is implemented by delivering dichloroethane or dichloropropanes to 25-55% aqueous ammonia solution preheated to 105-115 C and synthesis is effected at 105-125 C, pressure 0.5-1.4 MPa, and molar ratio of dichloroethane (or dichloropropanes) to ammonia equal to 1:(1.8-6.0). Advantageously, 10 to 50 wt % of 30-48% aqueous NaOH solution and 12 to 60 wt % of dichloroethane (or dichloropropanes) is added based on starting organochlorine feed. EFFECT: increased yield of desired products, simplified technology, and reduced power consumption. 2 cl, 1 tbl, 15 ex