[EN] PROCESS TO CONVERT CYCLIC ALKYLENE UREAS INTO THEIR CORRESPONDING ALKYLENE AMINES [FR] PROCÉDÉ DE CONVERSION D'ALKYLÈNE-URÉES CYCLIQUES EN LEURS ALKYLÈNE-AMINES CORRESPONDANTS
[EN] PROCESS FOR MANUFACTURING A MIXTURE OF STRAIGHT-CHAIN AND NON-STRAIGHT-CHAIN ETHYLENEAMINES<br/>[FR] PROCÉDÉ DE FABRICATION D'UN MÉLANGE D'ÉTHYLÈNEAMINES À CHAÎNES LINÉAIRES ET À CHAÎNES NON LINÉAIRES
申请人:AKZO NOBEL CHEMICALS INT BV
公开号:WO2019011709A1
公开(公告)日:2019-01-17
The invention pertains to a process for manufacturing a mixture of straight-chain higher ethyleneamines and non-straight-chain higher ethyleneamines selected from branched higher ethyleneamines and cyclic higher ethyleneamines, or the urea derivatives thereof, comprising the step of reacting amine-functional compound with ethanolamine-functional compound in the presence of a carbon oxide delivering agent, wherein a) amine-functional compound comprising a combination of straight-chain amine- functional compound and non-straight-chain amine-functional compound is reacted with straight-chain ethanolamine-functional compound, or b) straight-chain amine-functional compound is reacted with ethanolamine-functional compound comprising a combination of straight-chain ethanolamine-functional compound and non-straight-chain ethanolamine-functional compound, or c) amine-functional compound comprising a combinationof straight-chain amine-functional compound and non-straight-chain amine-functional compound is reacted with ethanolamine-functional compound comprising a combination of straight-chain ethanolamine-functional compound and non-straight-chain ethanolamine-functional compound. It has been found that the process according to the invention makes it possible to prepare tailor-made mixtures of straight-chain and non-straight-chain higher ethyleneamines, or urea derivatives thereof.
[EN] PROCESS FOR PREPARING CYCLIC ALKYLENE UREAS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ALKYLÈNE-URÉES CYCLIQUES
申请人:AKZO NOBEL CHEMICALS INT BV
公开号:WO2019030195A1
公开(公告)日:2019-02-14
A process for producing a cyclic alkylene urea product of Formula I: in which a compound of Formula II and/or Formula III is contacted in a reaction zone with a compound of Formula IV and/or Formula V and in the presence of one or more carbonyl delivering compounds; in which; R1 is –[A−X−]qR3; R2 is on each occurrence independently selected from H and C1 to C6 alkyl groups which are optionally substituted by one or two groups selected from −OH and −NH2; R3 is on each occurrence independently selected from H and C1 to C6 alkyl groups which are optionally substituted by one or two groups selected from −OH and −NH2; A is on each occurrence independently selected from C1 to C3 alkylene units, optionally substituted by one or more C1 to C3 alkyl groups; X is on each occurrence independently selected from −O−, −NR2−, groups of Formula VI, and groups of Formula VII and p and q are each independently selected from a whole number in the range of from 0 to 8; wherein the compound of Formula II and/or the compound of Formula III are added to a reaction zone comprising compound of Formula IV and/or compound of Formula (V) continuously or semi-continuously over a period of time, or in two or more batches.
[EN] PROCESS FOR MANUFACTURING A CYCLIC UREA ADDUCT OF AN ETHYLENEAMINE COMPOUND<br/>[FR] PROCÉDÉ DE FABRICATION DE PRODUIT D'ADDITION D'URÉE CYCLIQUE D'UN COMPOSÉ ÉTHYLÈNEAMINE
申请人:AKZO NOBEL CHEMICALS INT BV
公开号:WO2019030191A1
公开(公告)日:2019-02-14
The invention pertains to a process for manufacturing a cyclic urea adduct of an ethyleneamine compound, the ethyleneamine compound having a linear -NH-CH2-CH2-NH- group, the process comprising the steps of - in an absorption step contacting a liquid medium comprising an ethyleneamine compound having a linear -NH-CH2-CH2-NH- group with a CO2-containing gas stream at a pressure of 1 -20 bara, resulting in the formation of a liquid medium into which CO2 has been absorbed, - bringing the liquid medium to cyclic urea formation conditions, and in an urea formation step forming cyclic urea adduct of the ethyleneamine compound, urea formation conditions including a temperature of at least 120°C, wherein the total pressure at the end of the urea formation step is at most 20 bara, wherein the temperature in the absorption step is lower than the temperature in the urea formation step. It has been found that the process according to the invention makes it possible to obtain cyclic urea adducts in an efficient manner in the absence of metal-containing catalysts and to perform the process under relatively mild conditions, in particular relatively low pressure. More specifically, by separating the CO2 absorption step from the urea formation step, the CO2 absorption step can be carried out at relatively low temperatures and pressures. And because the CO2 is already present in the system at the beginning of the urea formation step, the pressure in the urea formation step does not need to be high.
Process for the Synthesis of N-substituted Cyclic Alkylene Ureas
申请人:Cytec Technology Corp.
公开号:EP2548869A1
公开(公告)日:2013-01-23
The invention relates to a process for the synthesis of N-substituted cyclic alkylene ureas by reacting a multifunctional aliphatic amine A having at least two amino groups which may be primary or secondary, at least one of which is a primary amino group, -NH2, and at least one of which is a secondary amino group, >NH, the other hydrogen group whereof having been substituted by a hydrocarbyl group which in turn may be substituted by a hydroxyl group, or an amino group, or a carboxyl group, or a ketone carbonyl group, or a hydrazide or hydrazone group, or a mercaptan group, and at least one further functional group selected from the group consisting of primary or secondary amino groups and hydroxyl groups, and an aliphatic organic carbonate component C selected from the group consisting of dialkyl carbonates CD and of alkylene carbonates CA.