PEP Review 84-3-1
A Process for Making Polyethylene Polyamines
Published: October 1985
A Union Carbide patent describes a process that combines the ethylene oxide process and the ethylene dichloride process for making ethylenediamine and heavier ethyleneamines. In essence, ethylenediamine made from ethylene oxide and ammonia is reacted with ethylene dichloride and ammonia. The resulting products are diethylenetriamine, triethylenetetramine, and other polyethylene polyamines; coproduction of ethylenediamine is optional. SRI's evaluation of this process found it to be economically viable.