Preparation of polyalkylene polyamines from ammonia, alkyleneamine, and alkanolamine
AssigneeAir Products and Chemicals, Inc.
InventorsMichael E. Ford, Thomas A. Johnson
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Abstract
A process for preparing noncyclic polyalkylene polyamine compounds is disclosed wherein ammonia, an alkylene polyamine compound and an alkanolamine compound are reacted in the presence of an effective amount of a phosphorus-containing substance or a salt of a sulfur-containing substance or its corresponding acid at a temperature from about 200.degree. to 350.degree. C. under a pressure sufficient to maintain the reaction mixture essentially in liquid phase. The polyalkylene polyamines thus formed are recovered from the reaction mixture.
Claims22
A process for preparing a noncyclic polyalkylene polyamine which comprises:
- contacting ammonia, an alkyleneamine compound having two primary amino groups of the general formula:
- ##STR4## wherein R is hydrogen or a lower alkyl (C.sub.1 -C.sub.4) radical, x is a number from 2 to about 6, and y is a number from 1 to about 4, and an alkanolamine compound having primary or secondary hydroxyl groups of the general formula:
- ##STR5## wherein R is hydrogen or a lower alkyl (C.sub.1 -C.sub.4) radical, x is a number from 2 to about 6, and y is a number from 0 to about 3;
- in the presence of an effective amount of a phosphorus-containing substance or a salt of a sulfur-containing substance, or the corresponding acid, at a temperature sufficient to effect reaction between the ammonia, the alkyleneamine compound and the alkanolamine compound under a pressure sufficient to maintain the reaction mixture essentially in liquid phase.
A process for preparing a noncyclic polyethylene polyamine which comprises:
- contacting ethylenediamine, monoethanolamine and ammonia in the presence of an effective amount of a phosphorus-containing substance at a temperature from about 200.degree. to 350.degree. C. under at least that pressure which is sufficient to maintain the reaction essentially in liquid phase;
- and
- recovering a noncyclic polyethyelene polyamine.
A process for preparing a non-cyclic polyethylene polyamine which comprises:
- contacting ethylenediamine, monoethanolamine and ammonia in the presence of an effective amount of a salt of a sulfur-containing substance at a temperature from about 200.degree. to 350.degree. C. under at least that pressure which is sufficient to maintain the reaction essentially in liquid phase;
- and
- recovering a noncyclic polyethylene polyamine.
Dependencies are inferred from the claim text.