Method of preparing polyethylene polyamines having improved color

摘要

A process is provided which may be run continuously for producing polyethylene polyamines having improved color characteristics which comprises treating discolored polyethylene polyamines with polyethylene polyamine hydrochloride in the presence of water at elevated temperatures for the time necessary to reduce the color of said polyethylene polyamines and then flash evaporating the decolorized polyethylene polyamines from the treating mixture.