Catalytic process for the preparation of linear polyethylenepolyamines using a titania-supported phosphamine catalyst

摘要

A catalytically active composition suitable for reacting ethylene diamine and monoethanolamine to form linear polyethylene polyamines, having a low content of cyclic by-­products, can be obtained by treating titania with a solution of phosphonitrilic chloride and an acid scavenging agent in a solvent under conditions to form titania containing an intermediate reaction product of said phosphonitrilic chloride with a portion of said titania, treating said intermediate reaction product with a solution of a diamine chelating agent and an acid scavenging agent in a solvent under conditions to form a final reaction product, and calcining said final reaction product to activate said final reaction product.