Process for the preparation of linear polyethylenepolyamines by reacting monoethanolamine with ethylenediamine in the presence of an intercalatively active catalyst
AssigneeTexaco Inc.
InventorsSusan D. Unvert, Steven H. Vanderpool, John F. Knifton
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Abstract
Essentially linear polyethylenepolyamines are prepared by reacting monoethanolamine with ethylenediamine in the presence of an intercalatively catalytically active tetravalent zirconium polymeric reaction product of an organo phosphonic acid or an ester thereof with a compound of tetravalent zirconium reactive therewith, such as zirconium trimethylene diphosphonate prepared by reacting trimethylenediphosphonic acid wth zirconyl chloride.
Claims14
In a method wherein monoethanolamine is reacted with ethylenediamine in the presence of a catalyst to provide an essentially noncyclic product comprising polyethylenepolyamines, the improvement for conducting said process which comprises:
- (a) using, as the catalyst, an intercalatively catalytically active tetravalent zirconium polymeric reaction product of an organo phosphonic acid or an ester thereof with a compound of tetravalent zirconium reactive therewith;
- and
- (b) contacting a mixture of ethylenediamine and monoethanolamine in the molar ratio of about 1 to about 5 moles of ethylenediamine per mole of monoethanolamine with said catalyst at a temperature of about 250.degree. to about 400.degree. C.
In a method wherein monoethanolamine is reacted with ethylenediamine in the presence of a catalyst to provide an essentially noncyclic reaction product comprising polyethylenepolyamines, the improvement for conducting said process which comprises:
- (a) using, as the catalyst, an intercalatively catalytically active tetravalent zirconium polymeric reaction product of an organo phosphonic acid with a tetravalent zirconium halide, said polymeric reaction product containing a molar ratio of phosphorous to zirconium of about 2 to 1;
- the organo groups of said polymeric reaction product being covalently bonded to phosphorous through a carbon linkage and the phosphorous being bonded to the zirconium through an oxygen linkage;
- and
- (b) contacting a mixture of ethylenediamine and monoethanolamine in a molar ratio of about 1 to about 5 moles of ethylenediamine per mole of monoethanolamine with said catalyst at a temperature of about 250.degree. to about 400.degree. C. and a pressure of about 500 to about 3000 psig. to obtain an essentially noncyclic reaction product.
In a method wherein monoethanolamine is reacted with ethylenediamine in the presence of a catalyst to provide an essentially noncyclic reaction product comprising polyethylenepolyamines, the improvement for conducting said process which comprises:
- a. using a catalyst consisting essentially of an intercalatively catalytically active tetravalent zirconium polymeric reaction product prepared by reacting an alkylenediphosphonic acid, a carboxymethylphosphonic acid or a phenylphosphonic acid with an amount of a tetravalent zirconium halide sufficient to provide a polymeric reaction product having a molar ratio of phosphorous to zirconium of about 2 to 1;
- the organo groups of said polymeric reaction product being covalently bonded to phosphorous through a carbon linkage and the phosphorous being bonded to the zirconium through an oxygen linkage;
- and
- b. contacting a mixture of ethylenediamine and monoethanolamine in a molar ratio of about 1 to 5 moles of ethylenediamine per mole of monoethanolamine with said catalyst at a temperature of about 250.degree. to about 400.degree. C. and a pressure of about 500 to about 3000 psig to obtain an essentially noncyclic reaction product comprising diethylenetriamine.
Dependencies are inferred from the claim text.