Reforming linear polyamines
AssigneeAir Products and Chemicals, Inc.
InventorsMichael E. Ford, Thomas A. Johnson
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Abstract
Process for production of polyalkylene polyamines, preferably non-cyclic polyalkylene polyamines, by reforming of other polyalkylene polyamines. The reforming process is effected by reacting the polyalkylene polyamine starting material in the presence of a phosphate, preferably a boron phosphate, catalyst at elevated temperature and pressure and in the presence of sufficient water and sufficient catalyst, for a reaction period and under reaction conditions otherwise adapted to bring about the desired reforming reaction.
Claims9
A method for reforming a feedstock of ethylene diamine or polyalkylene polyamine into a polyalkylene polyamine product different from said feedstock, said method comprising heating said feedstock with water and a catalyst to a temperature of 200.degree.-400.degree. C., in a reaction vessel, said catalyst comprised of a phosphate compound of a metal group consisting of boron and lithium, sodium, potassium, and other metals of group IA of the periodic table;
- beryllium, magnesium, calcium, and other metals of group IIA of the periodic table;
- zirconium, antimony, tin (valence states II and IV) and iron in both the ferrous and ferric states, said method comprising holding said feedstock with water and catalyst at said temperature for 0.5-5 hours, said proportion of catalyst and water with said feedstock, said feedstock temperature and said time of heating all being selected to cause conversion of said feedstock to a different polyalkylene polyamine product.
Dependencies are inferred from the claim text.