- METHOD FOR THE PRODUCTION OF ETHYLENEAMINES
-
The present invention relates to a process for preparing alkanolamines and/or ethyleneamines in the liquid phase, by reacting ethylene glycol and/or monoethanolamine with ammonia in the presence of an amination catalyst comprising Co, Ru and Sn.
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Paragraph 0336-0352
(2020/05/14)
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- PROCESS FOR PREPARING CYCLIC ALKYLENE UREAS
-
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.
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Page/Page column 14-15
(2019/02/25)
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- PROCESS FOR CONVERTING CYCLIC ALKYLENE UREAS INTO THEIR CORRESPONDING ALKYLENE AMINES
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The invention relates to a process for converting one or more cyclic ethylene ureas into corresponding ethylene amines and carbon dioxide. In the process, water is contacted with one or more cyclic alkylene urea compounds comprising one or more cyclic alkylene urea moieties in a reaction vessel at a temperature of 150 to 400°C, optionally in the presence of an amine compound selected from the group of primary amines, cyclic secondary amines and bicyclic tertiary amines. The mole ratio of water to cyclic alkylene urea moieties is in the range of from 0.1 to 20. In the reaction, at least a portion of the cyclic alkylene urea moieties are converted to corresponding alkylenediamine moieties and carbon dioxide, and the carbon dioxide is removed from the liquid reaction mixture in a stripping vessel by feeding a stripping fluid to the stripping vessel, and removing a carbon dioxide-containing stripping fluid.
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Page/Page column 21
(2019/02/25)
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- PROCESS FOR CONVERTING CYCLIC ALKYLENEUREAS INTO THEIR CORRESPONDING ALKYLENEAMINES
-
The present invention is directed to a process for converting cyclic alkyleneureas into their corresponding alkyleneamines wherein a feedstock comprising cyclic alkyleneureas is reacted in the liquid phase with water in an amount of 0. -20 mole water per mole urea moiety, at a temperature of at least 230°C, with removal of CO2. It has been found that the process according to the invention allows the efficient conversion of alkyleneureas into the corresponding alkyleneamines. The process has a high yield and low side product production. It is preferred for the cyclic alkyleneurea to comprises one or more of EU (ethyleneurea, the urea derivative of ethylenediamine (EDA)), UDETA (the urea derivative of diethylenetriamine (DETA)), UTETA (the group of urea derivatives of triethylenetetraamine (TETA), DUTETA (the diurea derivative of triethylenetetramine), UTEPAs (the urea derivatives of tetraethylenpentamine (TEPA)), DUTEPAs (the diurea derivatives of TEPA), or urea derivatives of pentaethylenehexamine (PEHA) and higher analogues, UAEEA (the urea derivative of aminoethylethanolannine), HE-UDETA (the urea derivative of hydroxyethyl diethylenetriamine), HE-UTETA (the urea derivative of hydroxyethyl triethylenetetraamine, HE-DUTETA (the diurea derivative of hydroxyethyl triethylenetetraamine), or any mixture of these.
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Page/Page column 13; 14; 15; 16
(2019/02/25)
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- PROCESS FOR MAKING HIGHER ETHYLENE AMINES
-
The invention pertains to a process to prepare ethylene amines with n ethyleneunits and n+1 amine groups wherein n is at least 4, or urea derivatives of said ethylene amines, by reacting an ethanolamine-functional compound, an amine-functional compound, and a carbon oxide delivering agent, wherein the ethanolamine-functional compound is of the formula HO-(C2H4-NH-)qH, q is at least 1, the amine-functional compound is of the formula H2N-(C2H4-NH-)rH, r is at least 1, the sum q+r is at least 4 and wherein optionally one or more of the ethanol-amine functional compound or amine-functional compound are at least partly used as their cyclic carbamate derivative, or linear or cyclic urea derivative. The process provides TEPA and higher ethylene amines in high yield and high selectivity, without having to use expensive or hazardous startingmaterials. Various urea derivatives of TEPA and PEHA are also claimed.
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Page/Page column 20; 23; 24
(2019/01/30)
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- Effects of Ni particle size on amination of monoethanolamine over Ni-Re/SiO2 catalysts
-
Ni-Re/SiO2 catalysts with controllable Ni particle sizes (4.5–18.0 nm) were synthesized to investigate the effects of the particle size on the amination of monoethanolamine (MEA). The catalysts were characterized by various techniques and evaluated for the amination reaction in a trickle bed reactor at 170°C, 8.0 MPa, and 0.5 h?1 liquid hourly space velocity of MEA (LHSVMEA) in NH3/H2 atmosphere. The Ni-Re/SiO2 catalyst with the lowest Ni particle size (4.5 nm) exhibited the highest yield (66.4%) of the desired amines (ethylenediamine (EDA) and piperazine (PIP)). The results of the analysis show that the turnover frequency of MEA increased slightly (from 193 to 253 h?1) as the Ni particle sizes of the Ni-Re/SiO2 catalysts increased from 4.5 to 18.0 nm. Moreover, the product distribution could be adjusted by varying the Ni particle size. The ratio of primary to secondary amines increased from 1.0 to 2.0 upon increasing the Ni particle size from 4.5 to 18.0 nm. Further analyses reveal that the Ni particle size influenced the electronic properties of surface Ni, which in turn affected the adsorption of MEA and the reaction pathway of MEA amination. Compared to those of small Ni particles, large particles possessed a higher proportion of high-coordinated terrace Ni sites and a higher surface electron density, which favored the amination of MEA and NH3 to form EDA.
- Ma, Lei,Yan, Li,Lu, An-Hui,Ding, Yunjie
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p. 567 - 579
(2019/04/03)
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- METHOD FOR PRODUCING POLYETHYLENE POLYAMINES
-
PROBLEM TO BE SOLVED: To provide a method for producing polyethylene polyamines with high selectivity and high yield. SOLUTION: In the presence of a solid acid catalyst, ethylene amines and aziridine are reacted with each other so that an equivalent of ethylene amines is 3 equivalents or more and 30 equivalents or less relative to aziridine. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPOandINPIT
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Paragraph 0050-0051
(2018/02/27)
-
- Effect of Re promoter on the structure and catalytic performance of Ni-Re/Al2O3 catalysts for the reductive amination of monoethanolamine
-
In this paper, Ni/Al2O3 catalysts (15 wt% Ni) with different Re loadings were prepared to investigate the effect of Re on the structure and catalytic performance of Ni-Re/Al2O3 catalysts for the reductive amination of monoethanolamine. Reaction results reveal that the conversion and ethylenediamine selectivity increase significantly with increasing Re loading up to 2 wt%. Ni-Re/Al2O3 catalysts show excellent stability during the reductive amination reaction. The characterization of XRD, DR UV-Vis spectroscopy, H2-TPR, and acidity-basicity measurements indicates that addition of Re improves the Ni dispersion, proportion of octahedral Ni2+ species, reducibility, and acid strength for Ni-Re/Al2O3 catalysts. The Ni15 and Ni15-Re2 catalysts were chosen for in-depth study. The results from SEM-BSE, TEM, and CO-TPD indicate that smaller Ni0 particle size and higher Ni0 surface area are obtained in the reduced Ni-Re/Al2O3 catalysts. Results from in situ XPS and STEM-EDX line scan suggest that Re species show a mixture of various valances and have a tendency to aggregate on the surface of Ni0 particles. During reaction, the Ni0 particles on the Al2O3 support are stabilized and the sintering process is effectively suppressed by the incorporation of Re. It could be concluded that sufficient Ni0 sites, the collaborative effect of Ni-Re, and brilliant stability contribute to the excellent catalytic performance of Ni-Re/Al2O3 catalysts for the reductive amination of monoethanolamine.
- Ma, Lei,Yan, Li,Lu, An-Hui,Ding, Yunjie
-
p. 8152 - 8163
(2018/03/09)
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- PREPARATION METHOD OF ETHYLENEAMINE-BASED COMPOUNDS
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The present invention relates to a method for preparing ethylene amine-based compounds which allows selective preparation of ethylene amine compounds having a higher molecular weight at a high ratio while improving the overall energy efficiency. The method for preparing ethylene amine-based compounds according to the present invention comprises a first reaction step and a second reaction step in which ethylene dichloride reacts with aqueous ammonia so that the molar ratio of ethylene dichloride (EDC) to ammonia may be 1:4-1:10. In the method, ethylene dichloride is introduced in an amount corresponding to 30-70 mol% of the total feed, and the balance amount is introduced in the second reaction step.COPYRIGHT KIPO 2017
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-
Paragraph 0068; 0069; 0070; 0086
(2017/10/13)
-
- Production of piperazinecarboxylic
-
Method for preparing piperazine of formula I by reacting diethanolamine (DEOA) of formula II with ammonia in the presence of hydrogen and a metal-containing supported catalyst. Before the catalyst is reduced with hydrogen, the catalytically active mass of the catalyst contains oxygen-containing aluminum, copper, nickel and cobalt compounds and 0.2 to 5.0 wt.% oxygen-containing tin compounds calculated as SnO, and the reaction is carried out in the liquid phase at an absolute pressure ranging from 160 to 220 bar, at a temperature ranging from 180 to 220°C, ammonia is used at a molar ratio ranging from 5 to 25 in relation to the DEOA used in the process, the method being carried out in the presence of 0.2 to 9.0 wt.% hydrogen relative to the total amount of DEOA and ammonia used in the process.
- -
-
Paragraph 0096-0098
(2018/12/12)
-
- Decomposition of amino diazeniumdiolates (NONOates): Molecular mechanisms
-
Although diazeniumdiolates (X[N(O)NO]-) are extensively used in biochemical, physiological, and pharmacological studies due to their ability to release NOand/or its congeneric nitroxyl, the mechanisms of these processes remain obscure. In this
- Shaikh, Nizamuddin,Valiev, Marat,Lymar, Sergei V.
-
-
- Amination process for manufacturing amines using catalyst
-
Disclosed is a process for the preparation of an amine (particularly diamines and polyamines) by reacting an alkanolamine or a polyol with ammonia in the presence of a catalyst composed of two active metals from the group of transition metals, namely nickel and chromium supported on a microporous refractory substrate, in a hydrogenated, trickle bed reactor.
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-
Paragraph 0044-0049
(2014/08/07)
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- METHOD FOR PREPARING N-(2-AMINOETHYL)ETHANE-1,2-DIAMINE
-
The invention discloses a method for preparation of N-(2-aminoethyl)ethane-1,2-diamine (DETA), which comprises steps of preparing a mixture by dissolving iminodiacetonitrile (IDAN) in an organic solvent and adding an anion exchange resin of OH type and a stabilizing agent for IDAN, subjecting the mixture to hydrogenation in the presence of a hydrogenation catalyst and a first aid at a temperature of 50-150°C, preferably 70-90°C, and under a pressure of 5-25 Mpa, preferably 9-14 Mpa to obtain DETA. In comparison with the known methods, the process of the present invention may inhibit the decomposition of IDAN, eliminate the poisoning factors for the catalyst, so as to prolong the service life of the catalyst, improve the efficiency of the process and obtain the product with high purity.
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-
Paragraph 0041
(2014/01/23)
-
- Process for preparing TETA and DETA
-
A process for preparing TETA and/or DETA by hydrogenating EDDN and/or EDMN with hydrogen in the presence of a catalyst, which comprises preparing EDDN and/or EDMN from FA, HCN and EDA in the presence of toluene as a solvent and performing the hydrogenation in suspension mode in the presence of THF.
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-
Paragraph 0589-0598
(2013/04/13)
-
- PROCESS FOR PREPARING TETA
-
A process for preparing TETA and/or DETA by the action of EDDN and/or EDMN with hydrogen in the presence of a catalyst, wherein the catalyst used is a catalyst of the Raney type and the pressure in the course of hydrogenation is in the range from 170 to 240 bar.
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-
Paragraph 0560-0565
(2013/03/26)
-
- Process for Preparing Piperazine
-
Process for preparing piperazine of the formula I by reacting diethanolamine (DEOA) of the formula II with ammonia (NH3) in the presence of hydrogen and a supported, metal-containing catalyst, wherein the catalytically active mass of the catalyst, prior to its reduction with hydrogen, comprises 20 to 85% by weight of oxygen-containing compounds of zirconium, calculated as ZrO2, 1 to 30% by weight of oxygen-containing compounds of copper, calculated as CuO, 14 to 70% by weight of oxygen-containing compounds of nickel, calculated as NiO, and 0 to 5% by weight of oxygen-containing compounds of molybdenum, calculated as MoO3, and the reaction is carried out in the liquid phase at an absolute pressure in the range from 160 to 220 bar, a temperature in the range from 180 to 220° C., using ammonia in a molar ratio to DEOA used of from 5 to 20 and in the presence of 0.2 to 9.0% by weight of hydrogen, based on the total amount of DEOA used and ammonia.
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-
Paragraph 0100-0109
(2014/01/08)
-
- Process for Preparing Piperazine
-
Process for preparing piperazine of the formula I by reacting diethanolamine (DEOA) of the formula II with ammonia in the presence of hydrogen and a supported, metal-containing catalyst has been found, wherein the catalytically active mass of the catalyst, prior to its reduction with hydrogen, comprises oxygen-containing compounds of aluminum, copper, nickel and cobalt and in the range from 0.2 to 5.0% by weight of oxygen-containing compounds of tin, calculated as SnO, and the reaction is carried out in the liquid phase at an absolute pressure in the range from 160 to 220 bar, a temperature in the range from 180 to 220° C., using ammonia in a molar ratio to DEOA used of from 5 to 25 and in the presence of 0.2 to 9.0% by weight of hydrogen, based on the total amount of DEOA used and ammonia.
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-
Paragraph 0109-0117
(2014/01/08)
-
- METHOD FOR PRODUCING ETHYLENEAMINES
-
The present invention relates to method for producing ethyleneamines that includes: reacting ethylenedichloride with ammonia water under conditions optimizing the molar ratio of ethylenedichloride to ammonia in a defined range to produce amine compounds, ammonium chloride, and water; and isolating the amine compounds, ammonium chloride, and water, respectively. The present invention provides a continuous process for producing ethyleneamines using ethylenedichloride and ammonia by efficiently controlling the composition of the ethyleneamine product in accordance with the supply and demand of ethyleneamines to optimize the distribution of ethyleneamines.
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Page/Page column 16
(2013/12/03)
-
- TRANSAMINATION OF NITROGEN-CONTAINING COMPOUNDS TO MAKE CYCLIC AND CYCLIC/ACYCLIC POLYAMINE MIXTURES
-
A transamination process is described to prepare polyamine product mixtures from reactants comprising mixed nitrogen-containing compounds with binary carbon spacing between nitrogen-containing groups (a binary component). A second nitrogen-containing component with a second carbon atom spacing between nitrogen-containing groups may also be employed. The molar ratio between the binary and second components can be adjusted to customize the product composition for desired end uses.
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Page/Page column 18-20
(2012/05/31)
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- NOVEL METHOD FOR PRODUCING TETA BY MEANS OF EDDN
-
The invention relates to a process for preparing triethylenetetramine (TETA), which, comprises the following steps: a) reaction of ethylenediamine (EDA) with formaldehyde and hydrocyanic acid (HCN) in a molar ratio of EDA to formaldehyde to HCN of from 1:1.5:1.5 to 1:2:2 to give ethylenediaminediacetonitrile (EDDN),b) hydrogenation of the EDDN obtained in step a) in the presence of a catalyst and a solvent.
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Page/Page column 8-9; 11
(2010/06/11)
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- METHOD OF MANUFACTURING ETHYLENEAMINES
-
The present invention provides methods of manufacturing ethyleneamines that makes use of an ethyleneamine-generating process that is coupled to a transamination process. The combination of an ethyleneamine-generating process with a transamination process improves the mix flexibility that can be obtained from the single process allowing the production of ethyleneamine compositions having an improved and more desirable product mix.
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Page/Page column 23-24
(2010/04/28)
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- METHODS OF MAKING CYCLIC, N-AMINO FUNCTIONAL TRIAMINES
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The present invention provides strategies for making cyclic triamines. Reactant media including certain precursors and/or certain types of catalysts can be converted into cyclic triamines with improved conversion and selectivity. The strategies can be incorporated into reactions that involve transamination schemes and/or reductive amination schemes. In the case of transamination, for instance, using transamination to cause ring closure of higher amines in the presence of a suitable catalyst leads to desired cyclic triamines with notable conversion and yield. In the case of reductive amination, reacting suitable polyfunctional precursors in the presence of a suitable catalyst also yields cyclic triamines via ring closure with notable selectivity and conversion. Both transamination and reductive amination methodologies can be practiced under much milder temperatures than are used when solely acid catalysts are used. Preferred embodiments can produce reaction mixtures that are generally free of salt by-products.
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Page/Page column 22-23
(2010/04/28)
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- METHOD FOR PRODUCING ETHYLENEAMINES
-
The invention relates to a process for preparing an ethylene amine mixture, which comprises hydrogenating an amino nitrile mixture comprising at least 30% by weight of aminoacetonitrile (AAN) and at least 5% by weight of iminodiacetonitrile (IDAN) in the presence of a catalyst. Ethylenediamine (EDA) and/or diethylenetriamine (DETA) and, if appropriate, further ethylene amines can be isolated from the ethylene amine mixtures obtained.
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Page/Page column 6
(2010/04/23)
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- PRODUCTION METHOD FOR ETHYLENEAMINE MIXTURES
-
The invention relates to a process for preparing an ethylene amine mixture, which comprises hydrogenating an amino nitrile mixture comprising at least two α-amino nitriles in an amount of at least 5% by weight in each case in the presence of a catalyst and, if appropriate, a solvent.
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Page/Page column 11
(2010/05/13)
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- METHOD FOR PRODUCING TRIETHYLENETETRAMINE
-
The invention relates to a process for preparing triethylenetetramine (TETA), which comprises hydrogenating ethylenediaminediacetonitrile (EDDN) in the presence of a catalyst and a solvent.
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Page/Page column 8
(2010/03/02)
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- A PROCESS TO SELECTIVELY MANUFACTURE DIETHYLENETRIAMINE (DETA) OR OTHER DESIRABLE ETHYLENAMINES VIA CONTINUOUS TRANSAMINATION OF ETHYLENEDIAMINE (EDA), AND OTHER ETHYLENEAMINES OVER A HETEROGENEOUS CATALYST SYSTEM
-
The present invention reacts ethylenediamine with one or more additional ethyleneamines in the presence of a transamination catalyst to provide a different, preferably more desirable product mix of one or more ethyleneamines.
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Page/Page column 12-13
(2010/04/28)
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- Low metal loaded, alumina supported, catalyst compositions and amination process
-
The present invention provides catalyst compositions useful for transamination reactions. The catalyst compositions have a catalyst support that includes transitional alumina, use a low metal loading (for example, less than 25 wt. %), and do not require the presence of rhenium. The catalyst compositions are able to advantageously promote transamination of a reactant product (such as the transamination of EDA to DETA) with excellent activity and selectivity, and similar to transaminations promoted using a precious metal-containing catalyst.
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Page/Page column 9-12
(2010/06/16)
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- Low metal loaded, catalyst compositions including acidic mixed metal oxide as support
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The invention provides a catalyst composition composed of a support portion and a catalyst portion. The support portion includes an acidic mixed metal oxide including a transitional alumina and a second metal oxide. The transitional alumina can comprise delta or theta alumina, in combination with other transitional phases, or an alpha or gamma alumina. The second metal oxide has a weight percentage that is less than the weight percentage of alumina. The catalyst portion is 25 weight percent or less of the catalyst composition and is composed of nickel and rhenium. The catalyst portion includes nickel in an amount in the range of 2 to 20 weight percent, based upon total catalyst composition weight, and there is no boron in the catalyst portion.
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Page/Page column 10; 11
(2010/04/30)
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- METHODS FOR MAKING ETHANOLAMINE(S) AND ETHYLENEAMINE(S) FROM ETHYLENE OXIDE AND AMMONIA, AND RELATED METHODS
-
The present invention relates to processes for the manufacture of one or more ethanolamines and one or more ethyleneamines starting from the reaction of ethylene oxide with ammonia to produce one or more ethanolamines and the conversion of the ethanolamine(s) to ethyleneamine(s). The present invention also relates to separating alkylethyleneamines from ethyleneamines.
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Page/Page column 26-27; 2/4-3/4
(2010/04/28)
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- METHOD FOR PRODUCING ETHYLENEDIAMINE
-
The invention relates to a process for preparing ethylenediamine by hydrogenation of aminoacetonitrile over a catalyst, wherein the hydrogenation is carried out in a solution comprising aminoacetonitrile, water in a proportion of from 0 to 60% by weight and a solvent and the aminoacetonitrile comprised in the solution is fed into the reaction vessel at a rate which is not greater than the rate at which the aminoacetonitrile reacts with hydrogen in the hydrogenation.
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Page/Page column 6
(2010/04/30)
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- METHOD FOR PRODUCING ETHYLENE AMINES ETHANOL AMINES FROM MONOETHYLENE GLYCOL (MEG)
-
A process for preparing ethylene amines and ethanolamines by hydrogenative amination of monoethylene glycol and ammonia in the presence of a catalyst, wherein the process is carried out in two process stages in which in the first process stage, the amination is carried out over a hydroamination catalyst to a monoethylene glycol conversion of not more than 40% and in the second process stage, a supported catalyst having an active composition comprising ruthenium and cobalt and no further additional metal of group VIII and also no metal of group IB is used in the form of shaped catalyst bodies which in the case of a spherical shape or rod shape in each case have a diameter of 3 mm, in the case of a pellet shape have a height of 3 mm and in the case of all other geometries in each case have an equivalent diameter L=1/a′ of 0.70 mm, is proposed.
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Page/Page column 4
(2009/10/01)
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- METHOD FOR PRODUCING ETHYLENE AMINES AND ETHANOL AMINES BY THE HYDROGENATING AMINATION OF MONOETHYLENE GLYCOL AND AMMONIA IN THE PRESENCE OF A CATALYST
-
A process for preparing ethylene amines and ethanolamines by hydrogenative amination of monoethylene glycol and ammonia in the presence of a catalyst, wherein a catalyst having an active composition comprising ruthenium and cobalt and no further additional metal of group VIII and also no metal of group IB is used in the form of shaped catalyst bodies which in the case of a spherical shape or rod shape in each case have a diameter of s2/mmp3) and: a ′ = Ap Vp where Ap is the external surface area of the shaped catalyst body (mms2) and Vp is the volume of the shaped catalyst body (mmp3), is proposed.
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Page/Page column 4-5
(2009/02/11)
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- Method for Producing Ethylene Amines
-
Processes comprising: providing a starting material comprising ethylenediamine; and reacting the starting material in the presence of a heterogeneous transition metal catalyst to form one or more ethylene amines; wherein the catalyst comprises a catalytically active composition, which prior to treatment with hydrogen, comprises a mixture of oxygen-containing compounds of aluminum, copper, nickel and cobalt; and wherein the catalyst is present as one or more shaped catalyst particles selected from spheres, extrudates, pellets and other geometries, wherein the sphere or extrudate has a diameter of a height of a′ of a′ is the external surface area per unit volume (mms2/mmp3), as defined by a ′ = A p V p where Ap is the external surface area of the catalyst particle (mms2) and Vp is the volume of the catalyst particle (mmp3).
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Page/Page column 4
(2008/12/08)
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- Process for Producing Ethyleneamines
-
Processes comprising: providing a starting material comprising monoethanolamine; and reacting the starting material with ammonia in the presence of a heterogeneous transition metal catalyst to form a reaction product comprising one or more ethylene amines; wherein the catalyst comprises a catalytically active composition, which prior to treatment with hydrogen, comprises a mixture of oxygen-containing compounds of aluminum, copper, nickel and cobalt; and wherein the catalyst is present as one or more shaped catalyst particles selected from spheres, extrudates, pellets and other geometries, wherein the sphere or extrudate has a diameter of s2/mmp3), as defined by a ′ = A p V p where Ap is the external surface area of the catalyst particle (mms2) and Vp is the volume of the catalyst particle (mmp3).
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Page/Page column 3-4
(2008/12/04)
-
- Method for analyzing haemoglobin by capillary electrophoresis, a kit for capillary electrophoresis, and use of a flow inhibitor in said method
-
The invention concerns a method for free solution capillary electrophoresis at an alkaline pH to analyze samples comprising haemoglobin, in which the sample is passed through a capillary containing an analysis buffer, comprising at least one step in which the sample is introduced into a capillary tube containing a solution of analysis buffer, characterized in that the buffer is of the zwitterionic type and in that it is associated with at least one flow inhibitor. It also concerns the use of EC flow inhibitors associated with at least one zwitterionic buffer, and a kit for analyzing haemoglobin by capillary electrophoresis.
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-
-
- METHOD FOR THE PRODUCTION OF ETHYLENEAMINES
-
Disclosed is a method for producing ethyleneamines, in which ethylene oxide (EO) is continuously reacted with ammonia on an inorganic ion exchanger as a heterogeneous catalyst in anhydrous conditions in a first reaction stage, the obtained reaction product containing monoethanolamine (MEOA), diethanolamine (DEOA), and triethanolamine (TEOA) at a weight ratio MEOA: DEOA: TEOA = 80 - 94: 5.9 - 15: 0.1 - 5, and the reaction product is then continuously reacted with ammonia in the presence of hydrogen and a heterogeneous hydrogenation catalyst in a second reaction stage.
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Page/Page column 9
(2010/11/24)
-
- METHOD FOR INCREASING THE SPACE-TIME YIELD IN A PROCESS USED FOR THE PRODUCTION OF A SYMMETRIC SECONDARY AMINE
-
Disclosed is a method for increasing the space-time yield in a process that is used for producing a symmetric secondary amine by reacting a primary amine in the presence of hydrogen and a catalyst at a temperature ranging between 50 and 250 °C and an absolute pressure ranging from 5 to 350 bar. According to the inventive method, the absolute pressure is lowered while the temperature is maintained at the same level.
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Page/Page column 12; 13-15
(2008/06/13)
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- METHOD FOR PRODUCING ETHYLENEAMINES
-
The invention relates to the production ethyleneamines by reacting monoethanolamine (MEOA) with ammonia in the presence of a catalyst inside a reactor (1) and by separating the resulting reaction discharge. During separation, the ethylenediamine (EDA) obtained is reacted inside a separate reactor (2) in the presence of a catalyst to form diethylenetriamine (DETA), and the resulting reaction discharge is fed to the separation of the reaction discharge resulting from the reactor (1).
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Page/Page column 10; 11
(2008/06/13)
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- METHOD FOR PRODUCING ETHYLENE-AMINES
-
The invention relates to a method for producing ethylene-amines, in particular, diethylenetriamine (DETA), by continuous reaction of ethylenediamine (EDA) in the presence of a heterogeneous catalyst, wherein said reaction is carried out in a reaction column.
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Page/Page column 11; 12
(2008/06/13)
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- Gas-phase studies on the reactivity of the azido(diethylenetriamine)platinum(II) cation and derived species
-
The recent report of the gas-phase loss of nitrogen from [Pt(dien)N3]+ (dien = diethylenetriamine = N-(2-aminoethyl)ethane-1,2-diamine) under collision-induced dissociation (CID) conditions has prompted us to investigate the intriguing structure(s) of [Pt(dien)N]+. This was carried out via CID and ion-molecule reactions (IMR) of [Pt(dien)N]+ in the gas phase. Labelling studies (15N and 2H labelling of the dien ligand) were also employed. As a result, some of the previously proposed structures were ruled out and three other potential structures of [Pt(dien)N]+ are considered. Labelling studies also indicate that the hydrogen atoms of both the amino groups and the carbon backbone of the dien ligand are involved in loss of NH3 from [Pt(dien)N]+. The gas-phase chemistry of [Pt(dien)N-NH3]+, the fragmentation product of [Pt(dien)N]+, was also probed using IMR and CID. The crystal structure of the [Pt(dien)N3]+ cation has also been determined.
- Wee, Sheena,White, Jonathan M.,McFadyen, W. David,O'Hair, Richard A.J.
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p. 1201 - 1207
(2007/10/03)
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- Alkyl glycidyl ether-capped polyamine foam control agents
-
A method for controlling the foaming of an aqueous organic compound-containing composition by the incorporation of a foam controlling amount of a compound of the formula: where n and m are 2 or 3, ???x is 1-6, and ???R' is a C4 to C22 alkyl group, where R' is a C4 to C22 alkyl group, the compound generating an initial foam height at least 30% less than a 0.1 wt% aqueous solution of dioctyl sodium sulfosuccinate (DOSS) when added at 0.1 wt% to the DOSS solution.
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-
-
- Mono-and polyamides of perfluoroalkyl-substituted unsaturated acids
-
Novel perfluoroalkyl-substituted mono-, di- and poly-amide compounds which are reaction products of a mono-, di- or polyamine of 60 to 2000 molecular weight with a perfluoroalkyl substituted unsaturated acid or its corresponding lower alkyl ester and optionally a non-fluorinated amino-reactive compound such as an acid, ester, anhydride, epichlorohydrin, isocyanate or urea, are useful as internally or externally applied paper sizes to impart oil and grease resistance to paper, and as oil proofing coatings on textiles, wood, masonry and the like, or as high-performance surface active agents.
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- Chemistry of the diazeniumdiolates. 2. Kinetics and mechanism of dissociation to nitric oxide in aqueous solution
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Diazeniumdiolate ions of structure R2N[N(O)NO]- (1) are of pharmacological interest because they spontaneously generate the natural bioregulatory species, nitric oxide (NO), when dissolved in aqueous media. Here we report the kinetic
- Davies,Wink,Saavedra,Keefer
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p. 5473 - 5481
(2007/10/03)
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- Tetramine treatment of neurological disorders
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2,3,2 Tetramine (3,7-diazanonane-1,9-diamine) is propounded for the treatment of Parkinson's Disease and dementias characterized by mitochondrial damage in view of this compound's ability to completely neutralize the dopainine-depriving effect of MPTP in laboratory animals up to 12 hours post MPTP injection, and to retain partial protection at suboptimal tissue levels for up to 36 hours. The effect of injecting combinations of MPTP and/or reducing agents and/or xenobiotics and/or depigmenting agents on Dopamine, Norepinephrine, Serotonin and Epinephrine levels demonstrated that MPTP and MPP+ act as reducing agents that mobilize copper and calcium, and sequester iron, and that the vulnerability of dopamine to these types of neurotoxins and to xenobiotics and metals can be corrected by administration of 2,3,2 tetramine that appears to redistribute metals between diverse storage pools and free metals in cytosol and regulate receptor mediated events, among other antidotal effects analogous to those of some of the endogenous polyamines.
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- Antimony/Lewis base adducts for Sb-ion implantation and formation of antimonide films
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An antimony/Lewis base adduct of the formula SbR3.L, wherein each R is independently selected from C1 -C8 alkyl, C1 -C8 perfluoroalkyl, C1 -C8 haloalkyl, C6 -C10 aryl, C6 -C10 perfluoroaryl, C6 -C10 haloaryl, C6 -C10 cycloalkyl, substituted C6 -C10 aryl and halo; and L is a Lewis base ligand coordinating with SbR3. The adducts of the invention are useful as metal source compositions for chemical vapor deposition, assisted chemical vapor deposition (e.g., laser-assisted chemical vapor deposition, light-assisted chemical vapor deposition, plasma-assisted chemical vapor deposition and ion-assisted chemical vapor deposition), ion implantation, molecular beam epitaxy, and rapid thermal processing, to form antimony or antimony-containing films.
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- Bioactive and/or targeted dendrimer conjugates
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Dendritic polymer conjugates which are composed of at least one dendrimer in association with at least one unit of a carried material, where the carrier material can be a biological response modifier, have been prepared. The conjugate can also have a target director present, and when it is present then the carried material may be a bioactive agent. Preferred dendritic polymers are dense star polymers, which have been complexed with biological response modifiers. These conjugates and complexes have particularly advantageous properties due to their unique characteristics.
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- Dense star polymer conjugates
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Dense star polymer conjugates which are composed of at least one dendrimer in association with at least one unit of a carried agricultural, pharmaceutical, or other material have been prepared. These conjugates have particularly advantageous properties due to the unique characteristics of the dendrimer.
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- Polyamino salts of alpha-hydroxyacids, alpha-ketoacids and related compounds
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Cosmetic compositions are described wherein α-hydroxyacids, α-ketoacids and related compounds are formed into amine salts through neutralization with a multi-amine functionalized polymer. Particularly preferred are glycolic acid and lactic acid salts of poly(ethylenimine).
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