Disclosed is a new method for the synthesis of unsymmetrical tertiary amines using alcohol and an imine, and to new tertiary amines.

The invention relates to a process for preparing certain amines, wherein, in a first step, a corresponding amino alcohol is reacted with a suitable carbonyl compound and then, in a second step, the intermediate obtained in the first step is reacted with a suitable amine component to form the desired amine.

The invention relates to a process for preparing certain amines, wherein, in a first step, a corresponding amino alcohol is reacted with a suitable carbonyl compound and then, in a second step, the intermediate obtained in the first step is reacted with a suitable amine component to form the desired amine.

The invention relates to a process for preparing certain amines, wherein, in a first step, a corresponding amino alcohol is reacted with a suitable carbonyl compound and then, in a second step, the intermediate obtained in the first step is reacted with a suitable amine component to form the desired amine.

The present invention relates to a process for preparing ethyleneamines and/or alkanolamines, comprising the following steps: 1) reacting MEG with ammonia in the presence of hydrogen and an amination catalyst; 2) removing hydrogen and ammonia from the reaction output from stage 1, wherein the removal of hydrogen and ammonia in stage 2 comprises the following steps: 2-1) separating the reaction output from stage 1 into a gaseous phase comprising ammonia and hydrogen, and a liquid phase comprising ethyleneamines and/or alkanolamines, 2-2) passing the gaseous phase from stage 2-1) through one or more condensers to obtain one or more liquid phases in which ammonia has been enriched, and a gaseous phase in which hydrogen has been enriched, 2-3) contacting the gaseous phase from stage 2-2) with MEG so as to obtain a liquid phase comprising MEG and ammonia and a gaseous phase comprising hydrogen and optionally ammonia.

The present invention relates to a process for preparing ethyleneamines and/or alkanolamines, comprising the following steps: 1) reacting MEG with ammonia in the presence of hydrogen and an amination catalyst; 2) removing hydrogen and ammonia from the reaction output from stage 1, wherein the removal of hydrogen and ammonia in stage 2 comprises the following steps: 2-1) separating the reaction output from stage 1 into a gaseous phase comprising ammonia and hydrogen, and a liquid phase comprising ethyleneamines and/or alkanolamines, 2-2) passing the gaseous phase from stage 2-1) through one or more condensers to obtain one or more liquid phases in which ammonia has been enriched, and a gaseous phase in which hydrogen has been enriched, 2-3) contacting the gaseous phase from stage 2-2) with MEG so as to obtain a liquid phase comprising MEG and ammonia and a gaseous phase comprising hydrogen and optionally ammonia.

The present invention relates to a process for preparing ethyleneamines and/or alkanolamines, comprising the following steps: 1) reacting MEG with ammonia in the presence of hydrogen and an amination catalyst; 2) removing hydrogen and ammonia from the reaction output from stage 1, wherein the removal of hydrogen and ammonia in stage 2 comprises the following steps: 2-1) separating the reaction output from stage 1 into a gaseous phase comprising ammonia and hydrogen, and a liquid phase comprising ethyleneamines and/or alkanolamines, 2-2) passing the gaseous phase from stage 2-1) through one or more condensers to obtain one or more liquid phases in which ammonia has been enriched, and a gaseous phase in which hydrogen has been enriched, 2-3) contacting the gaseous phase from stage 2-2) with MEG so as to obtain a liquid phase comprising MEG and ammonia and a gaseous phase comprising hydrogen and optionally ammonia.

A process for preparing polyethyleneamines of formula NH2-(CH2-CH2-NH-)pH wherein p is at least 3 and wherein one or more —NH-CH2-CH2-NH— units may be piperazine units and/or ethylene urea derivatives of these compounds, includes reacting monoethylene glycol with an amine-functional compound having at least two —NH— units, of which at least one is selected from primary amine groups and cyclic secondary amine groups, in the presence of a carbon oxide-delivering agent. The amine-functional compound includes at least one —NH-CH2-CH2-NH— unit, and one or more —NH-CH2-CH2-NH— units may be in the form of cyclic ethylene urea moieties, piperazine moieties, or linear ethylene urea moieties. The molar ratio of amine-functional compound to monoethylene glycol is above 1.2:1 and the molar ratio of carbon oxide delivering agent to —NH-CH2-CH2-NH— units is at least 0.5:1. The process makes it possible to obtain ethylene amines and derivatives thereof without using ammonia or metal-containing catalysts.

A process for preparing polyethyleneamines of formula NH2-(CH2-CH2-NH-)pH wherein p is at least 3 and wherein one or more —NH-CH2-CH2-NH— units may be piperazine units and/or ethylene urea derivatives of these compounds, includes reacting monoethylene glycol with an amine-functional compound having at least two —NH— units, of which at least one is selected from primary amine groups and cyclic secondary amine groups, in the presence of a carbon oxide-delivering agent. The amine-functional compound includes at least one —NH-CH2-CH2-NH— unit, and one or more —NH-CH2-CH2-NH— units may be in the form of cyclic ethylene urea moieties, piperazine moieties, or linear ethylene urea moieties. The molar ratio of amine-functional compound to monoethylene glycol is above 1.2:1 and the molar ratio of carbon oxide delivering agent to —NH-CH2-CH2-NH— units is at least 0.5:1. The process makes it possible to obtain ethylene amines and derivatives thereof without using ammonia or metal-containing catalysts.

A process for preparing polyethyleneamines of formula NH2-(CH2-CH2-NH-)pH wherein p is at least 3 and wherein one or more —NH-CH2-CH2-NH— units may be piperazine units and/or ethylene urea derivatives of these compounds, includes reacting monoethylene glycol with an amine-functional compound having at least two —NH— units, of which at least one is selected from primary amine groups and cyclic secondary amine groups, in the presence of a carbon oxide-delivering agent. The amine-functional compound includes at least one —NH-CH2-CH2-NH— unit, and one or more —NH-CH2-CH2-NH— units may be in the form of cyclic ethylene urea moieties, piperazine moieties, or linear ethylene urea moieties. The molar ratio of amine-functional compound to monoethylene glycol is above 1.2:1 and the molar ratio of carbon oxide delivering agent to —NH-CH2-CH2-NH— units is at least 0.5:1. The process makes it possible to obtain ethylene amines and derivatives thereof without using ammonia or metal-containing catalysts.