Transamination of nitrogen-containing compounds to high molecular weight polyalkyleneamines
AssigneeDow Global Technologies LLC
InventorStephen W. King
Life of this patent
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Abstract
A process for preparing high molecular weight acyclic polyamines comprising providing a reaction mixture that includes at least a first component comprising a first organic, nitrogen-containing compound that contains at least two non-tertiary amine groups separated from one another by a ternary or higher carbon atom spacing that can be transaminated in the presence of a hydrogenation/dehydrogenation catalyst to form a mixture of higher molecular weight, acyclic polyamines while minimizing the formation of cyclic polyamines.
Claims13
A method of making a product mixture of linear high molecular weight polyamines having four or more N atoms comprising the steps of:
- (a) providing a reaction composition comprising one or more nitrogen-containing compounds comprising a first component that has at least two non-tertiary amine groups separated from one another by at least a ternary or higher carbon atom spacing (C3 or greater spacing) and, optionally, a second component that has at least two nitrogen containing groups separated from one another by a binary or higher carbon atom spacing (C2 or higher spacing);
- wherein the molar content of the first component is at least 95% of the reaction composition;
- and
- (b) subjecting the reaction composition to a transamination reaction in the presence of a hydrogenation/dehydrogenation catalyst to obtain the mixture of linear high molecular weight polyamines having four or more N atoms.
A method of making a mixture of congeners of high molecular weight polyamines having 4 or more N atoms, comprising the steps of:
- providing a reaction mixture comprising first component comprising at least one organic, nitrogen-containing compound that contains at least two non-tertiary amines separated from one another by at least a ternary or greater carbon atom spacing;
- and a second component comprising a nitrogen-containing compound that contains at least two nitrogen-containing functional groups separated from one another by a second carbon atom spacing, wherein molar content of the first component is at least 95% of the reaction mixture, and subjecting the reaction mixture to a transamination reaction in the presence of a hydrogenation/dehydrogenation catalyst to obtain a product mixture comprising the mixture of the congeners of the higher molecular weight polyamines.
Dependencies are inferred from the claim text.