Patents by Inventor Peter Stops
Peter Stops 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: 7227029Abstract: Process for the continuous preparation of N-methyl-2-pyrrolidone (NMP) by reacting gamma-butyrolactone (GBL) with monomethylamine (MMA) in the liquid phase, wherein GBL and MMA are used in a molar ratio of from 1:1.08 to 1:2 and the reaction is carried out at from 320 to 380° C. and an absolute pressure of from 70 to 120 bar.Type: GrantFiled: November 15, 2002Date of Patent: June 5, 2007Assignee: BASF AktiengesellschaftInventors: Martin Rudloff, Peter Stops, Erhard Henkes, Helmut Schmidtke, Rolf-Hartmuth Fischer, Manfred Julius, Rolf Lebkücher, Karl-Heinz Ross
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Patent number: 7164031Abstract: A process for continuously preparing 2-pyrrolidone by reacting gamma-butyrolactone with ammonia in the liquid phase in the presence of water, wherein the reaction is carried out at a temperature of from 275 to 300° C. and an absolute pressure of from 140 to 180 bar.Type: GrantFiled: August 30, 2002Date of Patent: January 16, 2007Assignee: BASF AktiengesellschaftInventors: Martin Rudloff, Peter Stops, Erhard Henkes, Helmut Schmidtke, Rolf-Hartmuth Fischer, Manfred Julius, Rolf Lebkücher, Karl-Heinz Ross
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Publication number: 20050010057Abstract: Process for the continuous preparation of N-methyl-2-pyrrolidone (NMP) by reacting gamma-butyrolactone (GBL) with monomethylamine (MMA) in the liquid phase, wherein GBL and MMA are used in a molar ratio of from 1:1.08 to 1:2 and the reaction is carried out at from 320 to 380° C. and an absolute pressure of from 70 to 120 bar.Type: ApplicationFiled: November 15, 2002Publication date: January 13, 2005Inventors: Martin Rudloff, Peter Stops, Erhard Henkes, Helmut Schmidtke, Rolf-Hartmuth Fischer, Manfred Julius, Rolf Lebkucher, Karl-Heinz Ross
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Publication number: 20040242900Abstract: A process for continuously preparing 2-pyrrolidone by reacting gamma-butyrolactone with ammonia in the liquid phase in the presence of water, wherein the reaction is carried out at a temperature of from 275 to 300° C. and an absolute pressure of from 140 to 180 bar.Type: ApplicationFiled: February 24, 2004Publication date: December 2, 2004Inventors: Martin Rudloff, Peter Stops, Erhard Henkes, Helmut Schmidtke, Rolf-Hartmuth Fischer, Manfred Julius, Rolf Lebkucher, Karl-Heinz Ross
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Patent number: 6143934Abstract: In a process for preparing amines of the general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 are hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.2 -C.sub.20 -alkenyl, C.sub.2 -C.sub.20 -alkynyl, C.sub.3 -C.sub.20 -cycloalkyl, C.sub.4 -C.sub.20 -alkylcycloalkyl, C.sub.4 -C.sub.20 -cycloalkylalkyl, aryl, C.sub.7 -C.sub.20 -alkylaryl or C.sub.7 -C.sub.20 -aralkyl,R.sup.1 and R.sup.2 are together a saturated or unsaturated, divalent C.sub.3 -C.sub.9 -alkylene chain andR.sup.3 and R.sup.5 are each C.sub.21 -C.sub.200 -alkyl, C.sub.21 -C.sub.200 -alkenyl or together are a divalent C.sub.2 -C.sub.12 -alkylene chain,by reacting olefins of the general formula II ##STR2## where R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are as defined above, with ammonia or primary or secondary amines of the general formula III ##STR3## where R.sup.1 and R.sup.2 are as defined above, at from 200 to 350.degree. C.Type: GrantFiled: January 20, 1998Date of Patent: November 7, 2000Assignee: BASF AktiengesellschaftInventors: Uwe Dingerdissen, Rudolf Kummer, Peter Stops, Ulrich Muller, Jurgen Herrmann, Karsten Eller
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Patent number: 5900508Abstract: A process for the preparation of amines by reacting an olefin with ammonia or a primary or secondary amine at a temperature of from 200 to 350.degree. C. and a pressure of from 100 to 300 bar in the presence of at least one zeolite having the specific structure type PSH-3, MCM-22 or SSZ-25, as identified by X-ray diffractogram, or mixtures of these zeolites. These specific catalysts are broadly identified as alumina zeolites and may be modified by ion exchange, doping with other metals, by dealumination to remove or replace the alumina content and by other well known after treatments such as calcination, acid-treatment and the like. Monoolefins are preferred reactants but di- and polyolefins also can be reacted with relatively high selectivity and less tendency toward polymerization.Type: GrantFiled: July 18, 1996Date of Patent: May 4, 1999Assignee: BASF AktiengesellschaftInventors: Karsten Eller, Ulrich Muller, Rudolf Kummer, Peter Stops
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Patent number: 5886226Abstract: A process for preparing amines of the general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.2 -C.sub.20 -alkenyl, C.sub.2 -C.sub.20 -alkynyl, C.sub.3 -C.sub.20 -cycloalkyl, C.sub.4 -C.sub.20 -alkylcycloalkyl, C.sub.4 -C.sub.20 -cycloalkylalkyl, aryl, C.sub.7 -C.sub.20 -alkylaryl or C.sub.7 -C.sub.20 -aralkyl,R.sup.1 and R.sup.2 are together a saturated or unsaturated C.sub.3 -C.sub.9 -alkylene dichain, andR.sup.3 or R.sup.5 are each C.sub.21 -C.sub.200 -alkyl or C.sub.21 -C.sub.200 -alkenyl or together a C.sub.2 -C.sub.12 -alkylene dichain by reacting olefins of the general formula II ##STR2## where R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each as defined above, with ammonia or primary or secondary amines of the general formula III ##STR3## where R.sup.1 and R.sup.2 are each as defined above, at temperatures from 200.degree. to 350.degree. C.Type: GrantFiled: January 29, 1998Date of Patent: March 23, 1999Assignee: BASF AktiengesellschaftInventors: Karsten Eller, Rudolf Kummer, Peter Stops
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Patent number: 5817871Abstract: A process for preparing an amine by catalytic reaction of an olefin with ammonia or a primary or secondary amine by contacting a mixture of the reactants in a reactor at 200.degree. to 400.degree. C. and an elevated pressure up to 700 bar in the presence of a catalyst consisting essentially of an X-ray amorphous (non-crystalline) mesoporous catalyst, some of which may have a microporous non-crystalline content. The catalyst has the compositiona MO.sub.2 * b Q.sub.2 O.sub.3 * c P.sub.2 O.sub.5where Q is at least one of the trivalent elements aluminum, boron, chromium, iron or gallium, and M is at least one of the tetravalent elements silicon, titanium or germanium. The molar ratio of a:b is from 0.5:1 to 1000:1 and the molar ratio of c:b is from 0 to 2:1. As prepared and used in the process, this non-crystalline catalyst has a specific BET surface area of from 200 to 1000 m.sup.2 /g.Type: GrantFiled: August 15, 1997Date of Patent: October 6, 1998Assignee: BASF AktiengesellschaftInventors: Uwe Dingerdissen, Gunter Lauth, Andreas Henne, Peter Stops, Karsten Eller, Eugen Gehrer
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Patent number: 5786510Abstract: A process for the preparation of amines of the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 denote hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkynyl, C.sub.3 -C.sub.20 cycloalkyl, C.sub.4 -C.sub.20 alkylcycloalkyl, C.sub.4 -C.sub.20 cycloalkylalkyl, aryl, C.sub.7 -C.sub.20 alkylaryl or C.sub.7 -C.sub.20 aralkyl,R.sup.1 and R.sup.2 together denote a saturated or unsaturated C.sub.3 -C.sub.9 alkylene dichain andR.sup.3 or R.sup.5 denotes C.sub.21 -C.sub.200 alkyl, C.sub.21 -C.sub.200 alkenyl or they together form a C.sub.2 -C.sub.12 alkylene dichain,by the reaction of olefins of the general formula II ##STR2## in which R.sup.3, R.sup.4, R.sup.5 and R.sup.6 have the aforementioned meanings,with ammonia or primary or secondary amines of the general formula III ##STR3## in which R.sup.1 and R.sup.2 have the aforementioned meanings, at temperatures ranging from 200.degree. to 350.degree. C.Type: GrantFiled: January 16, 1997Date of Patent: July 28, 1998Assignee: BASF AktiengesellschaftInventors: Karsten Eller, Rudolf Kummer, Peter Stops
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Patent number: 5739405Abstract: A process for the preparation of amines of the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 denote hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkynyl, C.sub.3 -C.sub.20 cycloalkyl, C.sub.4 -C.sub.20 alkylcycloalkyl, C.sub.4 -C.sub.20 cycloalkylalkyl, aryl, C.sub.7 -C.sub.20 alkylaryl, or C.sub.7 -C.sub.20 aralkyl,R.sup.1 and R.sup.2 together denote a saturated or unsaturated C.sub.3 -C.sub.9 alkylene dichain andR.sup.3 or R.sup.5 denotes C.sub.21 -C.sub.200 alkyl, C.sub.21 -C.sub.200 alkenyl or they together form a C.sub.2 -C.sub.12 alkylene dichain,by the reaction of olefins of the general formula II ##STR2## in which R.sup.3, R.sup.4, R.sup.5, and R.sup.6 have the above meanings, with ammonia or primary or secondary amines of the general formula III ##STR3## in which R.sup.1 and R.sup.2 have the above meanings, at temperatures ranging from 200.degree. to 350.degree. C.Type: GrantFiled: December 4, 1996Date of Patent: April 14, 1998Assignee: BASF AktiengesellschaftInventors: Karsten Eller, Rudolf Kummer, Peter Stops
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Patent number: 5728900Abstract: Catalyst and process for the preparation of butene-2-diol-1,4 by the hydrogenation of butyne-2-diol-1,4 in aqueous solution over a palladium-containing fixed-bed catalyst, which is doped with lead or cadmium, in which a catalyst is used which has been made by applying Pd and Pb or Pd and Cd successively, by vapor deposition or sputtering, to a metal gauze or a metal foil acting as support material followed by forming the catalyst at an elevated temperature in air.Type: GrantFiled: February 29, 1996Date of Patent: March 17, 1998Assignee: BASF AktiengesellschaftInventors: Franz Josef Brocker, Rainer Becker, Volkmar Menger, Peter Stops
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Patent number: 5714644Abstract: A process is disclosed for the selective hydrogenation of butynediol to 2-butene-1,4-diol using a palladium catalyst to which either copper and zinc, or silver and zinc, or copper, silver and zinc are added as doping agents. In the preferred embodiment, it has been possible, by optimizing the composition of the catalyst, to improve the activity and selectivity of the catalysts in question while also eliminating the need to handle toxic substances during the catalyst manufacturing process.Type: GrantFiled: March 20, 1997Date of Patent: February 3, 1998Assignee: BASF AktiengesellschaftInventors: Matthias Irgang, Volkmar Menger, Ernest Miesen, Peter Stops, Fritz Graf
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Patent number: 5530127Abstract: A process for the preparatiion of an amine which comprises reacting a primary or secondary alcohol and a nitrogen compound selected from the group consisting of ammonia and primary and secondary amines, at temperatures of from 80.degree. to 250.degree. C. and pressures of from 1 to 400 bar using hydrogen in the presence of a zirconium/copper/nickel catalyst, wherein the catalytically active material contains from 20 to 85 wt % of oxygen-containing zirconium compounds, calculated as ZrO.sub.2, from 1 to 30 wt % of oxygen-containing compounds of copper, calculated as CuO, from 30 to 70 wt % of oxygen-containing compounds of nickel, calculated as NiO, from 0.1 to 5 wt % of oxygen-containing compounds of molybdenum, calculated as MoO.sub.3 and from 0 to 10 wt % of oxygen-containing compounds of aluminum and/or manganese, calculated as Al.sub.2 O.sub.3 or MnO.sub.2, respectively.Type: GrantFiled: August 1, 1995Date of Patent: June 25, 1996Assignee: BASF AktiengesellschaftInventors: Wolfgang Reif, Lothar Franz, Peter Stops, Volkmar Menger, Rainer Becker, Rudolf Kummer, Siegfried Winderl
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Patent number: 5521139Abstract: Catalyst and process for the preparation of butene-2-diol-1,4 by the hydrogenation of butyne-2-diol-1,4 in aqueous solution over a palladium-containing fixed-bed catalyst, which is doped with lead or cadmium, in which a catalyst is used which has been made by applying Pd and Pb or Pd and Cd successively, by vapor deposition or sputtering, to a metal gauze or a metal foil acting as support material followed by forming the catalyst at an elevated temperature in air.Type: GrantFiled: September 30, 1994Date of Patent: May 28, 1996Assignee: BASF AktiengesellschaftInventors: Franz J. Brocker, Rainer Becker, Volkmar Menger, Peter Stops
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Patent number: 5453208Abstract: A process for the oxidation of ammonium ions and organic carbon in wastewaters containing ammonium ions and organic carbon by means of nitric acid at from 100.degree. to 350.degree. C., wherein the molar ratio between organic carbon and ammonium nitrogen is adjusted to a value in the range from 0.3:1 to 4:1 by addition of organic carbon or ammonium nitrogen.Type: GrantFiled: November 22, 1993Date of Patent: September 26, 1995Assignee: BASF AktiengesellschaftInventors: Karl G. Baur, Thomas Papkalla, Ulrich Kanne, Peter Stops
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Patent number: 5030328Abstract: A method of separating .gamma.-butyrolactone from a mixture containing ethanol, tetrahydrofuran, water, n-butanol, 1,4-butanediol, diethyl succinate and .gamma.-butyrolactone, by distillation in vacuum columns.Type: GrantFiled: November 5, 1990Date of Patent: July 9, 1991Assignee: BASF AktiengesellschaftInventors: Rolf Fischer, Peter Stops, Erwin Brunner, Rudolf Weigand
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Patent number: 4946029Abstract: Carboxylic esters obtained by reacting olefinically unsaturated compounds with carbon monoxide and alcohols and containing aldehydes, acetals and/or unsaturated compounds are purified by(a) treating the carboxylic ester which contains an aldehyde, acetal or unsaturated compound in a first stage at from 20.degree. to 200.degree. C. with a strongly acidic agent and(b) hydrogenating the mixture thus treated in a second stage at from 50.degree. to 200.degree. C. under a pressure of from 1 to 50 bar in the presence of one or more metals of subgroup VIII of the periodic table and(c) removing low and high boilers from the hydrogenated mixture obtained in stage b by distillation and obtaining a pure carboxylic ester.Type: GrantFiled: February 24, 1989Date of Patent: August 7, 1990Assignee: BASF AktiengesellschaftInventors: Gerhard Frank, Hubert Lendle, Wilfried Seyfert, Peter Stops
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Patent number: 4861895Abstract: Aqueous solutions which are obtained in the carbalkoxylation of olefinically unsaturated compounds and contain heterocyclic aromatic nitrogen bases, their transformation products and lower fatty acids and/or their salts are treated by a process in which (a) the aqueous solution is heated to 150.degree.-300.degree. C. under from 10 to 300 bar and (b) heterocyclic aromatic nitrogen bases which are formed again from the transformation products are then separated off.Type: GrantFiled: July 24, 1987Date of Patent: August 29, 1989Assignee: BASF AktiengesellschaftInventors: Werner Bertleff, Robert Maerkl, Peter Magnussen, Gebhard Kuehn, Peter Stops
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Patent number: 4810798Abstract: Pyridine or methylpyridines or mixtures thereof are recovered from methyl butanedicarboxylate containing reaction mixtures obtained by reaction of methyl pentenoate with carbon monoxide and methanol in the presence of pyridine, methylpyridines or mixtures thereof and also cobalt catalysts at elevated temperatures and under superatmospheric pressure and subsequent treatment with molecular oxygen containing gases in aqueous acetic acid by(a) separating the reaction mixture on the one hand into an aqueous phase containing cobalt acetate, pyridine, methylpyridines or mixtures thereof, acetic acid and methanol and on the other an organic phase containing methyl butanedicarboxylate, by-products, unconverted methyl pentenoate, acetic acid and also pyridine, methylpyridines or mixtures thereof,(b) extracting the organic phase obtained in step (a) with aqueous acetic acid to obtain an aqueous extract containing pyridine or methylpyridines or mixtures thereof as well as acetic acid,(c) combining the aqueous extract obtType: GrantFiled: November 12, 1987Date of Patent: March 7, 1989Assignee: BASF AktiengesellschaftInventors: Hubert Lendle, Paul Panitz, Wilfried Seyfert, Peter Stops
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Patent number: 4777284Abstract: Carbalkoxy-containing aliphatic compounds are prepared continuously by reacting an olefinically unsaturated aliphatic compound with carbon monoxide and an alkanol in the presence of a cobalt carbonyl catalyst and a tertiary nitrogen base at from 80.degree. to 200.degree. C. and under from 100 to 1,200 bar by an improved process in which carbon monoxide is circulated, and a carbon dioxide content of from 0.1 to 2% by volume is maintained in the carbon monoxide fed to the reaction.Type: GrantFiled: November 5, 1987Date of Patent: October 11, 1988Assignee: BASF AktengesellschaftInventors: Robert Maerkl, Werner Bertleff, Gebhard Kuehn, Paul Panitz, Peter Stops, Rudolf Kummer, Guenter Schuch