Patents by Inventor Rudolf Kummer
Rudolf Kummer 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: 4929759Abstract: Amines are prepared from an olefin and ammonia or a primary or secondary amine, or a mixture of these, in the presence of a borosilicate or borogermanate zeolite of the pentasil type as a catalyst, by a process in which the amine obtained is isolated from the reaction mixture, and unreacted starting materials are recycled.Type: GrantFiled: October 6, 1989Date of Patent: May 29, 1990Assignee: BASF AktiengesellschaftInventors: Volker Taglieber, Wolfgang Hoelderich, Rudolf Kummer, Wolf D. Mross, Guenter Saladin
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Patent number: 4929758Abstract: Amines are prepared from an olefin and ammonia or a primary and/or secondary amine in the presence of a zeolite catalyst of the pentasil type. Iron silicate zeolites of the pentasil type having an SiO.sub.2 /Fe.sub.2 O.sub.3 ratio greater than or equal to 10 are preferably used.Type: GrantFiled: June 13, 1988Date of Patent: May 29, 1990Assignee: BASF AktiengesellschaftInventors: Volker Taglieber, Wolfgang Hoelderich, Rudolf Kummer, Wolf D. Mross, Guenter Saladin
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Patent number: 4859210Abstract: Fuel motor compositions and lubricant compositions contain small amounts of one or more polybutyl or polyisobutyl alcohols of the formula (I)R--CH.sub.2 --OH (I)where R is a polybutyl or polyisobutyl radical derived from isobutene and up to 20% by weight of n-butene, or a corresponding (poly)alkoxylate or a corresponding carboxylate of the polybutyl or polyisobutyl alcohol.These additives reduce deposition at the valves of piston engines.Type: GrantFiled: January 5, 1988Date of Patent: August 22, 1989Assignee: BASF AktiengesellschaftInventors: Dieter Franz, Rudolf Kummer, Helmut Mach, Hans P. Rath
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Patent number: 4832702Abstract: The fuel or lubricant composition proposed contains one or more polybutyl or polyisobutylamines of the general formula I ##STR1## where R.sub.1 is a polybutyl- or polyisobutyl radical derived from isobutene and up to 20% by weight of n-butene and R.sub.2 and R.sub.3 are identical or different and are each hydrogen, an aliphatic or aromatic hydrocarbon, a primary or secondary, aromatic or aliphatic aminoalkylene radical or polyaminoalkylene radical, a polyoxyalkylene radical or a hetaryl or heterocyclyl radical, or, together with the nitrogen atom to which they are bonded, form a ring in which further hetero atoms may be present.Type: GrantFiled: March 25, 1987Date of Patent: May 23, 1989Assignee: BASF AktiengesellschaftInventors: Rudolf Kummer, Dieter Franz, Hans P. Rath
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Patent number: 4801738Abstract: .delta.-Formylvalerates are prepared by a process wherein a 3-pentenoate is treated with an isomerization catalyst at elevated temperatures and a 4-pentenoate is distilled off, and the resulting 4-pentenoate is reacted with carbon monoxide and hydrogen at from 80 to 160.degree. C. under from 1 to 30 bar in the presence of a rhodium carbonyl complex which has been modified with tertiary organic phosphines or phosphites.Type: GrantFiled: May 9, 1984Date of Patent: January 31, 1989Assignee: BASF AktiengesellschaftInventors: Heinz-Walter Schneider, Rudolf Kummer, Volker Taglieber
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Patent number: 4777285Abstract: Alkenecarboxylates of the formula I ##STR1## where R.sub.1 is alkyl of 1 to 6 carbon atoms and n is 2, 3 or 4, are prepared by a process which comprises reacting a lactone of the formula II ##STR2## where R.sub.2 is hydrogen or methyl and m is 1 or 2, with an alkanol of 1 to 6 carbon atoms in the presence of an acidic catalyst at from 150.degree. to 400.degree. C.Type: GrantFiled: March 19, 1987Date of Patent: October 11, 1988Assignee: BASF AktiengesellschaftInventors: Rudolf Kummer, Uwe Vagt, Rolf Fischer, Walter Seufert, Rainer Becker
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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
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Patent number: 4755625Abstract: 1,1,2-trialkoxyethanes I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.8 -alkyl and R.sup.1 and R.sup.2 may furthermore be bonded to one another to form a 5-membered to 7-membered ring, are prepared by reacting a formaldehyde dialkyl acetal II with carbon monoxide and hydrogen, from 0.5 to 1.5 moles of hydrogen being used per mole of carbon monoxide, and with not less than 1 mole of alcohol R.sup.3 OH per mole of formaldehyde dialkyl acetal under superatmospheric pressure and at elevated temperatures in the presence of a catalyst which is formed from a cobalt carbonyl compound and a trivalent organic compound of the formula III ##STR2## where A is phosphorus, arsenic, antimony or bismuth and R.sup.4, R.sup.5 and R.sup.6 are each an organic radical.Type: GrantFiled: July 16, 1987Date of Patent: July 5, 1988Assignee: BASF AktiengesellschaftInventors: Robert Maerkl, Werner Bertleff, Rudolf Kummer
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Patent number: 4745228Abstract: Cyclic ketones of the formula ##STR1## where n is an integer from 4 to 6, are prepared by converting an aliphatic dicarboxylate of the formulaR.sup.1 OCC--(CH.sub.2).sub.n --COOR.sup.2 IIwhere n has the above meaning, R.sup.1 and R.sup.2 are each alkyl, cycloalkyl, aralkyl or aryl and R.sup.2 may furthermore be hydrogen, at from 150.degree. to 450.degree. C. over a solid oxide catalyst.Type: GrantFiled: June 24, 1987Date of Patent: May 17, 1988Assignee: BASF AktiengesellschaftInventors: Martin Decker, Rolf Fischer, Wolfgang Franzischka, Rudolf Kummer, Heinz-Walter Schneider, Uwe Vagt
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Patent number: 4740525Abstract: Ethylene glycol is prepared from carbon monoxide and hydrogen in homogeneous liquid phase under superatmospheric pressure and at elevated temperature in the presence of a rhodium-containing catalyst and in the presence of an organic solvent, the organic solvent used being a C.sub.2 -C.sub.20 -n-alkanol and the concentration of this alkanol, based on the total amount of the mixture, constantly being maintained at not less than 50% by weight.Type: GrantFiled: August 26, 1986Date of Patent: April 26, 1988Assignee: BASF AktiengesellschaftInventors: Robert Maerkl, Werner Bertleff, Wolfgang Harder, Rudolf Kummer
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Patent number: 4645855Abstract: A process for the preparation of succinic acid diesters by carbonylation of acrylic acid esters in the presence of alcohols, using a cobalt carbonyl complex as the catalyst and a heterocyclic nitrogen base as the promoter, at 80.degree.-200.degree. C. and under a carbon monoxide pressure of 60-300 bar, wherein the reaction is carried out in the presence of not less than 20% by weight, based on the amount of all the liquid constituents of the reaction mixture, of an inert liquid and the concentration of the acrylic acid ester is kept, for the predominant part of the reaction time, at below 15% by weight, again based on the amount of all liquid constituents.Type: GrantFiled: August 24, 1984Date of Patent: February 24, 1987Assignee: BASF AktiengesellschaftInventors: Johannes G. Reuvers, Wolfgang Richter, Rudolf Kummer
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Patent number: 4619790Abstract: Alkylcarboxylic acids (where alkyl is of 6 to 20 carbon atoms) are manufactured by hydrocarboxylating the corresponding olefins by means of cobalt carbonyl compounds in the presence of from 0.5 to 1.5 kg of N-methylpyrrolidone, per kg of the olefin, as the solvent.Type: GrantFiled: February 1, 1978Date of Patent: October 28, 1986Assignee: BASF AktiengesellschaftInventors: Rudolf Kummer, Kurt Schwirten
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Patent number: 4600726Abstract: Ethylene glycol is prepared from carbon monoxide and hydrogen under superatmospheric pressure and at an elevated temperature in the presence of a rhodium-containing catalyst together with a cobalt catalyst, the molar ratio of rhodium to cobalt being from about 20:1 to 60:1.Type: GrantFiled: July 24, 1985Date of Patent: July 15, 1986Assignee: BASF AktiengesellschaftInventors: Werner Bertleff, Franz-Josef Muller, Rudolf Kummer, Wolfgang Harder
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Patent number: 4586987Abstract: C.sub.1 -C.sub.4 -alkyl pentenoates are obtained from reaction mixtures which contain this and which are obtained by reacting butadiene, or a butadiene-containing hydrocarbon mixture, with carbon monoxide and a C.sub.1 -C.sub.4 -alkanol, in the presence of a cobalt carbonyl catalyst and a tertiary nitrogen base at elevated temperatures and under superatmospheric pressure by a process in which(a) the liquid reaction mixture freed from excess carbon monoxide is treated with hydrogen at elevated temperatures and under from 5 to 80 bar,(b) hydrocarbons are distilled off from the resulting liquid reaction mixture,(c) the C.sub.1 -C.sub.4 -alkyl pentenoate, the alkanol and the nitrogen base are then distilled off under reduced pressure, and(d) the C.sub.1 -C.sub.4 -alkyl pentenoate is obtained by fractional distillation from the distillate containing this compound, the alkanol and the tertiary nitrogen base.Type: GrantFiled: April 10, 1985Date of Patent: May 6, 1986Assignee: BASF AktiengesellschaftInventors: Heinz-Walter Schneider, Rudolf Kummer, Otto Leman, Paul Panitz
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Patent number: 4568653Abstract: Reaction mixtures which are obtained on hydroformylation or carbonylation of olefinically unsaturated compounds and which contain dissolved non-volatile complex compounds of metals of group VIII of the periodic table are worked up by a method wherein the products, after distillative removal of low-boiling constituents alone, or of these constituents plus a part of the high-boiling residue, or a part of the high-boiling residue after distillative removal of the desired products, are or is extracted with carbon dioxide, a C.sub.2 -C.sub.4 -paraffin, a C.sub.2 -C.sub.4 -olefin or a normally gaseous halohydrocarbon at above the critical temperature and above the critical pressure of these (extractant) compounds.Type: GrantFiled: January 6, 1981Date of Patent: February 4, 1986Assignee: BASF AktiengesellschaftInventors: Kurt Schwirten, Rudolf Kummer, Wolfgang Richter
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Patent number: 4561942Abstract: Methyl 4-pentenoate is isolated from mixtures containing this and methyl 3-pentenoate by a process in which from 0.25 to 0.4 part by weight of water is added per part by weight of methyl 4-pentenoate, and the azeotrope of methyl 4-pentenoate and water is distilled off.Type: GrantFiled: March 28, 1985Date of Patent: December 31, 1985Assignee: BASF AktiengesellschaftInventors: Heinz-Walter Schneider, Rudolf Kummer, Dieter Zimmerling
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Patent number: 4550195Abstract: A process for the manufacture of pent-3-enoic acid and its alkyl esters, of the general formulaCH.sub.3 --CH.dbd.CH--CH.sub.2 --CO--ORwhere R is hydrogen or alkyl of 1 to 4 carbon atoms, comprising carbonylating butadiene with carbon monoxide and a compound ROH at from 300 to 1,000 bars CO pressure and from 100.degree. to 160.degree. C. in the presence of cobalt catalysts and nitrogen bases, wherein C.sub.4 cuts are used as starting materials and a tertiary amine having a pK.sub.A of from 3 to 11 is used as the nitrogen base. The pent-3-enoic acid or alkyl esters produced may be used for the manufacture of adipic acid or its alkyl esters, which compounds are starting materials for the manufacture of nylons.Type: GrantFiled: August 21, 1981Date of Patent: October 29, 1985Assignee: BASF AktiengesellschaftInventors: Rolf Platz, Rudolf Kummer, Heinz-Walter Schneider, Kurt Schwirten
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Patent number: 4537987Abstract: Pure monoesters of adipic acid are prepared by a process in which(a) a pentenoate is reacted with carbon monoxide and hydrogen at from 90.degree. to 140.degree. C. and under from 5 to 300 bar in the presence of a carbonyl complex of cobalt or of rhodium, and a 5-formylvalerate is separated off, and(b) the 5-formylvalerate thus obtained is oxidized with molecular oxygen, or with a gas containing this, at from 20.degree. to 100.degree. C. under from 1 to 10 bar.Type: GrantFiled: July 11, 1984Date of Patent: August 27, 1985Assignee: BASF AktiengesellschaftInventors: Heinz-Walter Schneider, Wolfgang Richter, Walter Disteldorf, Rudolf Kummer
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Patent number: 4533757Abstract: Olefinically unsaturated compounds are continuously hydroformylated under from 2 to 30 bar and at from 80.degree. to 130.degree. C. using, as a catalyst, a rhodium complex which contains, as ligands, sparingly volatile compounds of the general formula I ##STR1## where A is phosphorus, arsenic, antimony or bismuth and R.sup.1, R.sup.2 and R.sup.3 are each organic radicals, by a method in which the hydroformylation mixture consisting of liquid and gaseous components is removed from the reactor and is subjected to relatively high temperatures and/or relatively low pressures for a short time in a devolatilization column, the mixture at the same time being separated into a gas phase and a liquid phase, the gas phase is separated into the product and the recycle gas in a separator, and the recycle gas and the liquid phase from the devolatilization column are recycled to the reactor.Type: GrantFiled: January 16, 1984Date of Patent: August 6, 1985Assignee: BASF AktiengesellschaftInventors: Rudolf Kummer, Wolfgang Richter, Kurt Schwirten, Peter Stops
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Patent number: 4529815Abstract: 4-Pentenoates are prepared by isomerization of isomeric pentenoates in the presence of a catalyst, by a process in which isomeric pentenoates are treated at elevated temperatures with an acidic ion exchanger or acidic zeolite which contains a noble metal of group eight of the periodic table, and the 4-pentenoate is distilled off from the reaction mixture.Type: GrantFiled: May 9, 1984Date of Patent: July 16, 1985Assignee: Basf AktiengesellschaftInventors: Heinz-Walter Schneider, Rudolf Kummer