Patents by Inventor Claus Ulrich
Claus Ulrich has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5344983Abstract: Process for preparing a pentane-1,5-diamine of the formula ##STR1## where R.sup.1 represents a variety of organic radicals including alkyl which can bear substituents such as hydroxyl, halogen, alkoxy, carbalkoxy, carboxyl, alkylamino, cycloalkyl or aryl, andR.sup.2 and R.sup.3 independently of one another, represent hydrogen or have the same meanings as R.sup.1 or together are a C.sub.4 -C.sub.7 -alkylene chain which is unsubstituted or substituted by one to five C.sub.1 -C.sub.4 -alkyl groups,which comprises:(a) reacting a .gamma.-cyanoketone of the formula ##STR2## where R.sup.1, R.sup.2 and R.sup.3 have the meanings given above, with excess ammonia in a first reaction space on an acidic heterogeneous catalyst at 20.degree.-150.degree. C. and 15-500 bar, and(b) hydrogenating the resulting reaction product in a second separate reaction space in the presence of excess ammonia on a cobalt, nickel or noble metal catalyst at 50.degree.-180.degree. C. and 30-500 bar.Type: GrantFiled: August 26, 1992Date of Patent: September 6, 1994Assignee: BASF AktiengesellschaftInventors: Tom Witzel, Eberhard Fuchs, Franz Merger, Claus-Ulrich Priester
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Patent number: 5247120Abstract: Abstract of the Disclosure: Aminopropionitriles of the general formula I ##STR1## where R is hydrogen or methyl, wherein ammonia is reacted with an acrylonitrile of the general formula II ##STR2## where the substituents have the abovementioned meanings, in a molar ratio of from 1:1 to 500:1 over a heterogeneous catalyst at from 40.degree. to 180.degree. C. and from 10 to 350 bar.Type: GrantFiled: July 30, 1992Date of Patent: September 21, 1993Assignee: BASF AktiengesellschaftInventors: Franz Merger, Martin Brudermueller, Claus-Ulrich Priester, Wolfgang Harder, Siegfried Winderl
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Patent number: 5239120Abstract: A process for the preparation of a 2-(3-aminopropyl)-cycloalkylamine of the general formula I ##STR1## in which the subscript n is an integer from 1 to 4, from a 2-(2-cyanoethyl)-cycloalkanone of the general formula II ##STR2## in which the subscript n has the meaning stated, wherein the following stages are carried out in discrete reaction chambers:a) the 2-(2-cyanoethyl)-cycloalkanone of formula II is reacted in a first reaction chamber with excess ammonia over an acidic heterogeneous catalyst at a temperature from 20.degree. to 150.degree. C. and a pressure of from 15 to 500 bar, andb) in a second reaction chamber, the reaction product from stage a) is hydrogenated at a temperature of from 60.degree. to 150.degree. C. and a pressure of from 50 to 300 bar in the presence of excess ammonia over a catalyst containing cobalt, nickel, ruthenium, and/or some other noble metal, which catalyst optionally contains a basic component or is supported on neutral or basic supporting material.Type: GrantFiled: March 27, 1991Date of Patent: August 24, 1993Assignee: BASF AktiengesellschaftInventors: Franz Merger, Claus-Ulrich Priester, Gerhard Koppenhoefer, Wolfgang Harder, Tom Witzel, Helmut Lermer, Ulrich Koehler
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Patent number: 5194607Abstract: Triphendioxazine dyes suitable for dyeing or printing hydroxyl- or amido-containing substrates have the formula ##STR1## where n is 0 or 1,m is 1 or 2,R.sup.1 and R.sup.2 are each independently of the other hydrogen, chlorine, bromine, hydroxysulfonyl, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, substituted or unsubstituted phenyl or substituted or unsubstituted phenoxy,R.sup.3 is halogen, carboxyl, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, vinylsulfonyl or the radical --SO.sub.2 --CH.sub.2 CH.sub.2 --Z, where Z is a leaving group, andQ.sup.1 and Q.sup.2 are each independently of the other a radical of the formula ##STR2## where R.sup.4 and R.sup.5 are each independently of the other hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl,R.sup.6 is hydrogen or a fiber-reactive radical,L.sup.1 and L.sup.2 are each independently of the other substituted or unsubstituted C.sub.2 -C.sub.8 -alkylene or phenylene,X is a chemical bond, oxygen, sulfur, imino, C.sub.1 -C.sub.Type: GrantFiled: June 27, 1991Date of Patent: March 16, 1993Assignee: BASF AktiengesellschaftInventors: Manfred Patsch, Claus Marschner, Claus-Ulrich Priester
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Patent number: 5166443Abstract: A process for the preparation of a 2,2-disubstituted pentane-1,5-diamine of the formula I ##STR1## where R.sup.1 and R.sup.2, independently of one another, are C.sub.1 - to C.sub.10 -alkyl or C.sub.2 - to C.sub.10 -alkenyl or together are a C.sub.4 - to C.sub.7 -alkylene chain which is unsubstituted or monosubstituted to pentasubstituted by C.sub.1 - to C.sub.4 -alkyl, from a 2,2-disubstituted 4-cyanobutanal of the formula II ##STR2## where R.sup.1 and R.sup.2 are as defined above, comprises, in two spatially separate reaction spaces,a) reacting the 4-cyanobutanal of the formula II, in a first reaction space, with excess ammonia on an acidic heterogeneous catalyst at from 20.degree. to 150.degree. C.Type: GrantFiled: March 17, 1991Date of Patent: November 24, 1992Assignee: BASF AktiengesellschaftInventors: Franz Merger, Claus-Ulrich Priester, Tom Witzel, Gerhard Koppenhoefer, Ludwig Schuster
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Patent number: 5068398Abstract: 6-Aminocaproic esters are prepared by reacting alkyl 5-formylvalerates with excess ammonia and hydrogen in the presence of ruthenium catalysts at elevated temperature under superatmospheric pressure in liquid ammonia as reaction medium.Type: GrantFiled: December 12, 1989Date of Patent: November 26, 1991Assignee: BASF AktiengesellschaftInventors: Franz Merger, Rolf Fischer, Wolfgang Harder, Claus-Ulrich Priester, Uwe Vagt
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Patent number: 4965362Abstract: 3-Dialkylaminopropionitriles ##STR1## where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.4 -alkyl which may furthermore be bonded to form a 5-membered or 6-membered ring, bis-(2-cyanoethyl) ether IINC--CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CH.sub.2 --CN IIand, if desired, ethylenecyanohydrin IIIHO--CH.sub.2 --CH.sub.2 --CN IIIare prepared jointly by a process in which(a) acrylonitrile and water are reacted in the presence of a base at from 60.degree. to 150.degree. C. to give a mixture of acrylonitrile, water and bis-(2-cyanoethyl) ether II, the base being a mineral base, a quaternary nitrogen base or a mixture of these,(b) this mixture is reacted at about 0.degree.-50.degree. C.Type: GrantFiled: July 6, 1989Date of Patent: October 23, 1990Inventors: Franz Merger, Wolfgang Harder, Peter Hettinger, Claus-Ulrich Priester, Dieter Franz, Dieter Voges
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Patent number: 4963673Abstract: Caprolactam is prepared by heating a 6-aminocaproic ester in liquid phase in the presence of water to 230.degree.-350.degree. C. under superatmospheric pressure in a reaction medium comprising a liquid aromatic hydrocarbon having a boiling point of from 80.degree. to 240.degree. C. which is inert under reaction conditions, and isolating caprolactam from the reaction mixture.Type: GrantFiled: December 12, 1989Date of Patent: October 16, 1990Assignee: BASF AktiengesellschaftInventors: Franz Merger, Rolf Fischer, Claus-Ulrich Priester
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Patent number: 4963672Abstract: Caprolactam is prepared in a process comprising the following steps:(a) reacting the 5-formylvaleric ester with liquid ammonia as reaction medium and hydrogen in the presence of a ruthenium catalyst in liquid phase at from 80.degree. to 140.degree. C. under a hydrogen partial pressure of from 40 to 100 bar,(b) replacing the reaction medium ammonia by an aromatic hydrocarbon having a boiling point of from 80.degree. to 240.degree. C. which is liquid under the reaction conditions,(c) heating the resulting mixture in liquid phase under superatmospheric pressure at 230.degree.-350.degree. C. to form caprolactam, and(d) isolating caprolactam from the resulting reaction mixture.Type: GrantFiled: December 12, 1989Date of Patent: October 16, 1990Assignee: BASF AktiengesellschaftInventors: Franz Merger, Rolf Fischer, Wolfgang Harder, Claus-Ulrich Priester, Uwe Vagt
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Patent number: 4767857Abstract: Caprolactam is prepared by heating a 6-aminocaproic ester at 100.degree.-320.degree. C. in the presence of a reaction medium comprising an aromatic hydrocarbon which is liquid under reaction conditions and has a boiling point from 80.degree. to 240.degree. C., and isolating caprolactam from the reaction medium.Type: GrantFiled: December 16, 1987Date of Patent: August 30, 1988Assignee: BASF AktiengesellschaftInventors: Franz Merger, Claus-Ulrich Priester, Rolf Fischer, Manfred Sauerwald
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Patent number: 4767856Abstract: In an improved process for preparing caprolactam by heating 6-aminocaproic acid, an ester or amide or mixture thereof in the presence of an inert reaction medium which is liquid under the reaction conditions and has a boiling point above that of caprolactam, the improvement comprises using as the reaction medium a hydrocarbon, maintaining a temperature of from 150.degree. to 350.degree. C., charging the 6-aminocaproic acid, ester, amide or mixture thereof at a rate commensurate with their rate of conversion, and separating caprolactam from the reaction mixture at a rate commensurate with its rate of formation.Type: GrantFiled: December 15, 1987Date of Patent: August 30, 1988Assignee: BASF AktiengesellschaftInventors: Toni Dockner, Manfred Sauerwald, Rolf Fischer, Hans-Martin Hutmacher, Claus-Ulrich Priester, Uwe Vagt
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Patent number: 4766237Abstract: In an improved process for the preparation of 6-aminocaproates by reacting a 5-formylvalerate with ammonia and hydrogen using an alkanol as a solvent in the presence of a hydrogenation catalyst at elevated temperatures and under superatmospheric pressure, the improvement comprises carrying out the reaction at from 40.degree. to 95.degree. C.Type: GrantFiled: January 28, 1987Date of Patent: August 23, 1988Assignee: BASF AktiengesellschaftInventors: Hans-Martin Hutmacher, Franz J. Broecker, Franz Merger, Rolf Fischer, Uwe Vagt, Heinz-Walter Schneider, Wolfgang Richter, Wolfgang Harder, Claus-Ulrich Priester
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Patent number: 4731445Abstract: Caprolactam is prepared by a process in which(a) the 5-formylvalerate is reacted with excess ammonia and hydrogen in the presence of an alkanol as the solvent and in the presence of a hydrogenation catalyst under superatmospheric pressure in the liquid phase at from 40.degree. to 130.degree. C.,(b) excess ammonia and hydrogen are separated off from the reaction mixture,(c) the resulting reaction mixture is reacted with water at elevated temperatures with simultaneous removal of alkanols, and(d) the reaction mixture thus obtained is heated to 150.degree.-370.degree. C. and .epsilon.-caprolactam is obtained.Type: GrantFiled: January 28, 1987Date of Patent: March 15, 1988Assignee: BASF AktiengesellschaftInventors: Hans-Martin Hutmacher, Franz Merger, Franz J. Broecker, Rolf Fischer, Uwe Vagt, Wolfgang Harder, Claus-Ulrich Priester
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Patent number: 4730041Abstract: Caprolactam is prepared by a process in which(a) a 5-formylvalerate is reacted with excess ammonia and hydrogen in the presence of an alkanol as a solvent and in the presence of a hydrogenation catalyst under superatmospheric pressure in the liquid phase at from 40.degree. to 130.degree. C.,(b) excess ammonia and hydrogen are separated off from the reaction mixture and(c) the reaction mixture thus obtained is heated to 150.degree.-250.degree. C. and .epsilon.-caprolactam is obtained.Type: GrantFiled: January 28, 1987Date of Patent: March 8, 1988Assignee: BASF AktiengesellschaftInventors: Hans-Martin Hutmacher, Franz Merger, Franz J. Broecker, Rolf Fischer, Uwe Vagt, Wolfgang Harder, Claus-Ulrich Priester, Heinz-Walter Schneider, Wolfgang Richter