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公开(公告)号：JPH1072401A
公开(公告)日：1998-03-17
申请号：JP19215197
申请日：1997-07-17
Applicant: DEGUSSA
Inventor： HAAS THOMAS DR , MARTIN MEIER , BROSMER CHRISTOPH , ARNTZ DIETRICH DR , FREUND ANDREAS DR
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing 3-hydroxypropionic acid in high yield by using 3-hydroxypropionaldehyde as a 3C constituent. SOLUTION: The objective 3-hydroxypropionic acid or its salt is produced by using 3 hydroxypropionaldehyde as a 3C constituent and at least 10wt.% catalyst expressed in terms of a noble metal based on the 3C constituent when the 3C constituent is catalytically oxidized with oxygen or a gas containing the oxygen in aqueous phase in the presence of the catalyst containing the noble metal of the platinum group, and further the objective 3-hydroxypropionic acid or its salt is isolated from the reaction mixture. Moreover, preferably, the catalyst is used in the amount corresponding to 20-50wt.% based on the 3C constituent and a supported catalyst containing platinum is especially used as the catalyst. The catalytic oxidation is preferably performed without regulating the pH at a temperature within a range of 20-60 deg.C.
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公开(公告)号：JPH1067701A
公开(公告)日：1998-03-10
申请号：JP19215297
申请日：1997-07-17
Applicant: DEGUSSA
Inventor： HAAS THOMAS DR , MEIER MARTIN DR , BROSMER CHRISTOPH DR , ARNTZ DIETRICH DR , FREUND ANDREAS DR
IPC: C07C51/235 , C07C55/08
Abstract: PROBLEM TO BE SOLVED: To obtain the subject compound in a high yield useful as a synthetic material by a catalytic oxidation of a C3 component. SOLUTION: This objective malonic acid or its salt can be obtained by carrying out the catalytic oxidation of the C3 component in water phase by oxygen or oxygen containing gas in the presence of a catalyst containing a noble metal selected from platinum group (e.g. Ru, Rh, Pd, Os, Ir, Pt), at pH >=6, at the temperature range of 20-60 deg.C. Easily purchasable 3-hydroxypropionaldehyde or 3-hydroxypropionic acid or their aqueous solution is used as the C3 component. The catalysts containing Palladium or Platinum is preferred as the reaction catalyst, the amount of the catalyst to the C3 component is preferably 20-50wt.%.
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公开(公告)号：MY145599A
公开(公告)日：2012-02-29
申请号：MYPI20034465
申请日：2003-11-20
Applicant: EVONIK DEGUSSA GMBH , UHDE GMBH
Inventor： HOFEN WILLI , HAAS THOMAS DR , WOELL WOLFGANG , THIELE GEORG DR
IPC: C07C45/83 , C07D301/32
Abstract: THE PRESENT INVENTION RELATES TO A PROCESS FOR THE PURIFICATION OF A CRUDE PROPENE OXIDE CONTAINING METHANOL AND ACETALDEHYDE BY A CONTINUOUSLY OPERATED EXTRCATIVE DISTILLATION USING AN EXTRACTION SOLVENT LOWERING THE VOLATILITY OF METHANOL AND FEEDING A COMPOUND CONTAINING AN UNSUBSTITUTED NH2 GROUP CAPABLE OF REACTING WITH ACETALDEHYDE TO A DISTILLATION COLUMN AT A POINT ABOVE THE FEEDING POINT OF THE CRUDE PROPENE OXIDE TO GIVE A PURIFIED PROPENE OXIDE CONTAINING LESS THAN 100 PPM METHANOL AND LESS THAN 100 PPM ACETALDEHYDE. THE INVENTION ALSO RELATES TO A PROCESS FOR THE CATALYTIC EPOXIDATION OF PROPENE THAT INCLUDES THIS PURIFICATION EPOXIDATION OF PROPENE THAT INCLUDES THIS PURIFICATION STAGE.
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公开(公告)号：DE59812920D1
公开(公告)日：2005-08-18
申请号：DE59812920
申请日：1998-10-23
Applicant: DEGUSSA
Inventor： HAAS THOMAS DR , BURKHARDT OLAF DR , MORAWIETZ MARCUS DR , VANHEERTUM RUDOLF DR , BOURREL AGNES
IPC: C07D307/20 , C07B35/06 , C07C20060101 , C07C41/09 , C07C43/18 , C07D307/06 , C07D307/08 , C07D309/04 , C07D493/04 , C07H1/00 , C07H3/00
Abstract: Process for producing 5- or 6-membered cyclic ethers (anhydropolyols) comprises subjecting polyols having at least 4 C atoms and at least 2 OH groups to cyclodehydration at at least 100 degrees C in the presence of water, an acid catalyst, an acid-stable hydrogenation catalyst and hydrogen. Preferably the reaction temperature is 100-380 degrees C, preferably 180-280 degrees C. The H2 pressure is 1-20 MPa, preferably 3-10 MPa. The hydrogenation catalyst comprises Ru, Rh, Pd and/or Pt as metals or metal compounds. The hydrogenation catalyst is used in an amount of 0.001-10 (preferably 0.01-1) wt.% based on the polyol. The acid catalyst is a 1-10C aliphatic carboxylic acid, preferably formic, acetic or propionic acid. The acid catalyst is used in an amount of 0.1-20 (especially 0.5-10) wt.% based on the polyol. The polyol is a tetritol, pentitol or hexitol.
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公开(公告)号：IN180008B
公开(公告)日：1998-01-10
申请号：IN612CA1993
申请日：1993-10-14
Applicant: DEGUSSA
Inventor： HAAS THOMAS DR , NEHER ARMIN DR , ARNTZ DIETRICH DR , KLENK HERBERT DR , GIRKE WALTER
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Patent Agency Ranking
公开(公告)号：DE59403724D1
公开(公告)日：1997-09-18
申请号：DE59403724
申请日：1994-11-17
Applicant: DEGUSSA
Inventor： HAAS THOMAS DR , ARNTZ DIETRICH DR , MOST DIETER DR
IPC: B01J23/75 , C07B61/00 , B01J23/46 , C07C209/26 , C07C209/48 , C07C211/36
Abstract: 3-Aminomethyl-3,5,5-trimethylcyclohexylamine (isophoronediamine) is a raw material which is used industrially for various synthetic resins. Isophoronediamine is used as a cis/trans isomer mixture, the cis/trans isomer ratio influencing the properties. The invention shows a way of controlling the isomer ratio in the preparation of isophoronediamine by aminating hydrogenation of 3-cyano-3,5,5-trimethylcyclohexanone (isophoronenitrile) in the presence of ammonia, H2 and a catalyst. The reaction is carried out in two temperature stages, namely first at 10 to 90 DEG C and then at 90 to 150 DEG C with a temperature difference between both stages of at least 30 DEG C, the contact time in the first stage being shorter than in the second. By lowering the temperature in the first stage the cis/trans ratio is increased.
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公开(公告)号：DE59301845D1
公开(公告)日：1996-04-18
申请号：DE59301845
申请日：1993-05-05
Applicant: DEGUSSA
Inventor： HAAS THOMAS DR , WIEGAND NORBERT DR , ARNTZ DIETRICH DR
IPC: B01J23/46 , B01J23/755 , B01J23/42 , B01J25/02 , C07B61/00 , C07C29/14 , C07C29/141 , C07C31/20
Abstract: 1,3-propanediol prepared according to known methods by catalytic hydrogenation of 3-hydroxypropionaldehyde (HPA) obtainable from acrolein has a high residual carbonyl content and leads to problems in the preparation of poly(1,3-propylene glycol terephthalate). According to the invention, 1,3-propanediol can be prepared with a residual carbonyl content, calculated as propionaldehyde, of below 500 ppm, usually below 100 ppm, in the presence of a fixed-bed or suspension hydrogenation catalyst at an H2 pressure of 5 to 300 bar, if the hydrogenation is carried out to an HPA conversion rate in the region of 50 to 95% at 30 to 80 DEG C and the further hydrogenation is carried out up to essentially 100% HPA conversion at 100 to 180 DEG C.
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公开(公告)号：DE59301494D1
公开(公告)日：1996-03-07
申请号：DE59301494
申请日：1993-06-03
Applicant: DEGUSSA
Inventor： HAAS THOMAS DR , ARNTZ DIETRICH DR
Abstract: 1,3-Propanediol (PD) is obtained by hydration of acrolein to 3-hydroxypropionaldehyde (HPA) with subsequent catalytic hydrogenation. 4-Oxa-1,7-heptanediol (OD) is formed as a yield-reducing by-product. According to the invention, for the purposes of increasing the yield of 1,3-propanediol, the OD separated by distillation in the working up of the reaction mixture containing PD and OD is treated in aqueous solution at 100 to 300 DEG C with an acidic solid catalyst, in particular an acidic zeolite, and the reaction mixture freed from the solid catalyst is fed back into the work-up stage of the reaction mixture containing PD and OD.
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公开(公告)号：AT133402T
公开(公告)日：1996-02-15
申请号：AT93108905
申请日：1993-06-03
Applicant: DEGUSSA
Inventor： HAAS THOMAS DR , ARNTZ DIETRICH DR
Abstract: 1,3-Propanediol (PD) is obtained by hydration of acrolein to 3-hydroxypropionaldehyde (HPA) with subsequent catalytic hydrogenation. 4-Oxa-1,7-heptanediol (OD) is formed as a yield-reducing by-product. According to the invention, for the purposes of increasing the yield of 1,3-propanediol, the OD separated by distillation in the working up of the reaction mixture containing PD and OD is treated in aqueous solution at 100 to 300 DEG C with an acidic solid catalyst, in particular an acidic zeolite, and the reaction mixture freed from the solid catalyst is fed back into the work-up stage of the reaction mixture containing PD and OD.
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公开(公告)号：BR9304714A
公开(公告)日：1994-08-09
申请号：BR9304714
申请日：1993-11-12
Applicant: DEGUSSA
Inventor： NEHER ARMIN DR , HAAS THOMAS DR , ARNTZ DIETRICH DR , KLENK HERBERT DR , GIRKE WALTER
Abstract: A process for the production of acrolein by dehydration of glycerol in the liquid phase or in the gaseous phase, in each case on acidic solid catalysts, is described. Compared with previously known processes, the space-time yield and catalyst service life may be surprisingly increased with higher selectivity by treating a glycerol-water mixture with a glycerol content of 10 to 40 wt. % at 180 DEG to 340 DEG C. (liquid phase) or at 250 DEG to 340 DEG C. (gaseous phase) on a solid catalyst with an Ho value (Hammett acidity function) of less than +2, preferably less than -3.
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